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Home My WebLink About07/13/2020 - SWPPP - - Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Construction SWPPP Template Using the SWPPP Template Each section of the SWPPP Template includes "instructions" and space for your project and site information. You should read the instructions for each section before you complete that section.The SWPPP Template was developed as an editable document file so that you can easily add tables and additional text,and delete unneeded or non-applicable fields. Note that some sections may require only a brief description while others may require several pages of explanation. The following tips for using this template will help you ensure that the minimum permit requirements are met: • Read the 2012 CGP thoroughly before you begin preparation of your SWPPP to ensure that you have a working understanding of the permit's underlying requirements. You will also need to consult Part 9 of the permit to determine if your state or tribe has included additional requirements that affect you. • Complete the SWPPP prior to submitting your Notice of Intent (NOI) for permit coverage. This is required in Parts 1.4 and 7.1.1. • If you prepared a SWPPP for coverage under a previous version of EPA's CGP,you must review and update your SWPPP to ensure that the 2012 CGP requirements are addressed prior to submitting your NOI. Note: If your project is an "existing project" (see Part 1.4.2.b) or if you are a "new operator of an existing project" (see Part 1.4.2.c), and it is infeasible for you to comply with a specific requirement in Part 2.1 and 2.3.3 through 2.3.5 of the permit (except for Parts 2.3.3.1, 2.3.3.2b, 2.3.3.3c.i, and 2.3.3.4) because (1) the provision was not part of the permit you were previously covered under(i.e., the 2003 or 2008 CGP), and (2) because you are prevented from compliance due to the nature or location of earth disturbances that commenced prior to February 16, 2012, or because you are unable to comply with the requirement due to the manner in which stormwater controls have already been installed or were already designed prior to February 16, 2012, you are required to include documentation in your SWPPP of the reasons why it is infeasible for you to meet the specific requirement, and then you may be waived from complying with the requirement. You must include a separate justification why it is infeasible for you to meet each of the applicable requirements. • If there is more than one construction operator for your project, consider coordinating development of your SWPPP with the other operators. However,while multiple operators may share the same SWPPP, make sure that responsibilities and scope of work are clearly described for each operator. • Once you have been provided coverage under the CGP,include your NOI and authorization email, as well as a copy of the CGP, as attachments to the SWPPP. See Appendices B and C of the SWPPP Template. EPA notes that while EPA has made every effort to ensure the accuracy of all instructions and guidance contained in the SWPPP Template,the actual obligations of regulated construction activities are determined by the relevant provisions of the permit, not by the Template. In the event of a conflict between the SWPPP Template and any corresponding provision of the 2012 CGP,you must abide by the requirements in the permit. EPA welcomes comments on the SWPPP Template at any time and will consider those comments in any future revision of this document. You may contact EPA for CGP-related inquiries at cqp@epa.gov. EPA SWPPP Template, Version 1.0 1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: Proposed Redevelopment 1600 Osgood Street North Andover, Massachusetts 01845 SWPPP Prepared For: Hillwood Enterprises L.P. Mac Utsey 5050 W.Tilghman Street,Suite 435 Allentown, PA 18104 Phone: 843.276.6053 Email: Mac.Utsey@hillwood.com SWPPP Operator: RC Andersen, LLC Andrew Gerleit Senior Project Manager 695 US Route 46,Suite 205 Fairfield, NJ 07004 201-247-9907 Mobile E-mail - agerleit@rcandersen.com SWPPP Prepared By: Langan Engineering & Environmental Services, Inc. Timothy O'Neill 888 Boylston Street Boston, Massachusetts 02116 617.824.9100 toneill@langan.com SWPPP Preparation Date: July 6, 2020 Estimated Project Dates: Project Start Date: 08/01 /2020 Project Completion Date: 3/01 /2022 EPA SWPPP Template, Version 1.0 H Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Contents SECTION 1: CONTACT INFORMATION/RESPONSIBLE PARTIES ..........................................1 1 .1 Operator(s) / Subcontractor(s)................................................................................1 1 .2 Stormwater Team ........................................................................................................2 SECTION 2: SITE EVALUATION, ASSESSMENT, AND PLANNING.........................................2 2.1 Project/Site Information .............................................................................................3 2.2 Discharge Information................................................................................................4 2.3 Nature of the Construction Activity........................................................................6 2.4 Sequence and Estimated Dates of Construction Activities............................7 2.5 Allowable Non-Stormwater Discharges ..............................................................10 2.6 Site Maps......................................................................................................................10 SECTION 3: DOCUMENTATION OF COMPLIANCE WITH OTHER FEDERAL REQUIREMENTS ...........................................................................................................................11 3.1 Endangered Species Protection ...........................................................................11 3.2 Historic Preservation..................................................................................................12 3.3 Safe Drinking Water Act Underground Injection Control Requirements...13 SECTION 4: EROSION AND SEDIMENT CONTROLS.............................................................14 4.1 Natural Buffers or Equivalent Sediment Controls..............................................14 4.2 Perimeter Controls.....................................................................................................16 4.3 Sediment Track-Out ..................................................................................................17 4.4 Stockpiled Sediment or Soil & Recycled Concrete Aggregate...................18 4.5 Minimize Dust...............................................................................................................19 4.6 Minimize the Disturbance of Steep Slopes.........................................................20 4.7 Topsoil............................................................................................................................20 4.8 Soil Compaction ........................................................................................................20 4.9 Storm Drain Inlets........................................................................................................21 4.10 Constructed Stormwater Conveyance Channels...........................................21 4.11 Sediment Basins..........................................................................................................22 4.12 Chemical Treatment.................................................................................................23 4.13 Dewatering Practices...............................................................................................23 4.14 Other Stormwater Controls .....................................................................................25 4.15 Site Stabilization..........................................................................................................25 SECTION 5: POLLUTION PREVENTION STANDARDS............................................................26 5.1 Potential Sources of Pollution.................................................................................26 5.2 Spill Prevention and Response...............................................................................27 5.3 Fueling and Maintenance of Equipment or Vehicles.....................................28 5.4 Washing of Equipment and Vehicles...................................................................30 5.5 Storage, Handling, and Disposal of Construction Products, Materials, and Wastes .......................................................................................................30 5.6 Washing of Applicators and Containers used for Paint, Concrete or OtherMaterials..........................................................................................................................33 EPA SWPPP Template, Version 1.0 M Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 5.7 Fertilizers........................................................................................................................34 5.8 Other Pollution Prevention Practices ...................................................................34 SECTION 6: INSPECTION AND CORRECTIVE ACTION........................................................35 6.1 Inspection Personnel and Procedures.................................................................35 6.2 Corrective Action ......................................................................................................38 6.3 Delegation of Authority ...........................................................................................38 SECTION7: TRAINING...............................................................................................................40 SECTION 8: CERTIFICATION AND NOTIFICATION...............................................................40 EPA SWPPP Template, Version 1.0 iv Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 SECTION 1: CONTACT INFORMATION/RESPONSIBLE PARTIES 1.1 Operator(s) /Subcontractor(s) Operator(s): RC Andersen, LLC Andrew Gerleit Senior Project Manager 695 US Route 46, Suite 205 Fairfield, NJ 07004 201-247-9907 Mobile E-mail - agerleit@rcandersen.com Subcontractor(s): DW White Construction, Inc. Mark White 867 Middle Rd Acushnet, MA 02743 508) 763-8868 Email - mwhite@dwwhite.com Emergency 24-Hour Contact: RC Andersen, LLC Andy Gerleit 201-247-9907 Mobile E-mail - agerleit@rcandersen.com EPA SWPPP Template, Version 1.0 1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 1.2 Stormwater Team The stormwater team for the project is responsible for overseeing the development of the SWPPP, any later modifications to it, and for compliance with the requirements of the CGP. Each member of the stormwater team must have ready access to an electronic or paper copy of applicable portions of the CGP, the most updated copy of the project SWPPP, and other relevant documents or information that must be kept with the SWPPP. The stormwater team for this project consists of the following: Stormwater Team Name and/or position, Responsibilities I Have Read the and contact CGP and Understand the Applicable Requirements Glenn Burley General Contractor ❑ Yes Project Superintendent SWPPP Compliance/ implementation Date: Click here 201-396-2930 Mobile during construction, responsible for to enter a date. Email- ensuring that all other operators and gburley@rcandersen.com subcontractors are implementing SWPPP or portions of the SWPPP are notified in a timely manner of any changes to the plans or specifications that may impact compliance with the CGP and/or this SWPPP Mark White Site Contractor ❑ Yes 508) 763-8868 SWPPP compliance/implementation Date: Click here Email - during construction to enter a date. mwhite@dwwhite.com Timothy O'Neill SWPPP development, SWPPP ❑ Yes SWPPP Preparer inspections on behalf of the operator Date: Click here 860-944-8749 Mobile to enter a date. Email- toneill@langan.com Insert Responsibility ❑ Yes Date: Click here to enter a date. The Operator is required to file a Notice of Intent ("NOI") using EPA's electronic NOI system (eReporting Tool or "Net"). To access NeT, go to https://www.epa.gov/npdes/stormwater-discharges-construction- activities#ere porting. The NOI must be certified by a qualifying official meeting the definition provided in Section VII of the NOI Instruction form and per Appendix I, Section 1.11 of the CGP. The Operator(s) must provide a copy of the NOI signifying active status notification transmitted by noreply@epa.gov. The Operator(s) has developed this SWPPP, consistent with Part 7 of the CGP, before submitting the NOI for coverage under the permit. When there is a change to the site's Operator, the new Operator must submit EPA SWPPP Template, Version 1.0 2 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 a new NOI, and the previous operator must submit a Notice of Termination ("NOT") form as specified in Part 8.3 of the CGP. An acknowledgement email from EPA will be followed by an additional email providing active status notification, unless EPA notifies the Operator that authorization has been delayed or denied. The Operator shall post a sign or other notice documenting permit coverage at a safe, publicly accessible location in close proximity to the construction site. The notice must be located so that it is visible from the public road that is nearest to the active part of the construction site, and it must use a font large enough to be readily viewed from a public right-of-way. At a minimum, the notice must include: • The NPDES ID (i.e., permit tracking number assigned to the NOI); • A contact name and phone number for obtaining additional construction site information; • The Uniform Resource Locator ("URL") for the SWPPP (if available), or the following statement: "If you would like to obtain a copy of the Stormwater Pollution Prevention Plan (SWPPP) for this site, contact the EPA Regional Office at [include the appropriate CGP Regional Office contact information found at https://www.epa.gov/npdes/contact-us-stormwater#regional];" and • The following statement: "If you observe indicators of stormwater pollutants in the discharge or in the receiving waterbody, contact the EPA through the following website: https://www.epa.gov/enforcement/report-environmental-violations." SECTION 2: SITE EVALUATION, ASSESSMENT, AND PLANNING 2.1 Project/Site Information Project Name and Address Project/Site Name: Proposed Redevelopment for Hillwood Enterprises, L.P. and 1600 Osgood Street, LLC Project Street/Location: 1600 Osgood Street City: North Andover State: Massachusetts ZIP Code: 01845 County or Similar Subdivision: Essex County Project Latitude/Longitude (Use one of three possible formats, and specify method) Latitude: Longitude: 42°43 ' 54" N (degrees, minutes, seconds) -71 ° 6 54" W (degrees, minutes, seconds) Method for determining latitude/longitude: EPA SWPPP Template, Version 1.0 3 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 ❑ USGS topographic map (specify scale: ) ❑ EPA Web site ❑ GPS � Other (please specify): Gooqle Earth Horizontal Reference Datum: ❑ NAD 27 F� NAD 83 or WGS 84 F-1 Unknown If you used a U.S.G.S topographic map,what was the scale? Additional Project Information Is the project/site located on Indian country lands, or located on a property of religious or cultural significance to an Indian tribe? ❑ Yes F� No If yes, provide the name of the Indian tribe associated with the area of Indian country (including the name of Indian reservation if applicable), or if not in Indian country, provide the name of the Indian tribe associated with the property: If you are conducting earth-disturbing activities in response to a public emergency, document the cause of the public emergency (e.g., natural disaster, extreme flooding conditions), information substantiating its occurrence (e.g., state disaster declaration), and a description of the construction necessary to reestablish effective public services: Are you applying for permit coverage as a "federal operator" as defined in Appendix A of the 2012 CGP? El Yes F� No 2.2 Discharge Information Does your project/site discharge stormwater into a Municipal Separate Storm Sewer System (MS4)? F-1 Yes F� No Are there any surface waters that are located within 50 feet of your construction disturbances? F1 Yes F-1 No EPA SWPPP Template, Version 1.0 4 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Table 1 - Names of Receiving Waters Name(s) of the first surface water that receives stormwater directly from your site and/or from the MS4 (note: multiple rows provided where your site has more than one point of discharge that flows to different surface waters) 1.Merrimack River, Unnamed tributary river 2. 3. Table 2— Impaired Waters/TMDLs Answer the following for each surface water listed in Table 1 above) Is this surface If you answered yes, then answer the following: water listed as Has a TMDL been "impaired"? What pollutant(s) are causing the impairment? completed? 1. ® YES ❑ NO Escherichia Coli(E. Coli) [:] YES ® NO PCBs in Fish Tissue Phosphorous,Total Describe the method(s) you used to determine whether or not your project/site discharges to an impaired water: EPA Waters GeoViewer, Waterbody Quality Assessment Report, EPA 303(d) Listed Waters, EPA 305(b) Assessed Waterbody History Report. Table 3—Tier 2,2.5, or 3 Waters (Answer the following for each surface water listed in Table 1 above) Is this surface water designated If you answered yes,specify which as a Tier 2,Tier 2.5, or Tier 3 Tier (2,2.5, or 3) the surface water is water? designated as? see Appendix F 1. [:]YES ® NO EPA SWPPP Template, Version 1.0 5 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 2.3 Nature of the Construction Activity General Description of Project Provide a general description of the construction project: The proposed redevelopment will include a subdivision creating two lots (±168 acres); Lot A (±57.5 acres), Lot B (±1 10.4 acres). Lot A will include the renovation and improvement of a±400,000 gross square foot of building, along with 1,500 parking spaces, in addition the existing on site solar field will be consolidated onto lot A. Lot B is proposed to be redeveloped into a±3,835,000 gross square foot e-commerce fulfillment center along with parking, landscaping and other improvements. The proposed redevelopment includes the demolition of the majority of the buildings and associated site features on the property. Two office buildings, known as buildings 20 and 21, with a total footprint of ±133,333 square feet located along Osgood Street (Lot A) are proposed to remain. The parking lot, drive aisles, infrastructure and other associated site features located between these buildings and Osgood Street will remain along with several other site features located elsewhere on the development identified in the design drawings. Additional parking lots, loading areas, and landscape improvements will be added to the north, west, and south of the existing building. Following demolition, construction of a ±3,835,000 square foot e-commerce fulfillment center (±820,000 square foot footprint) with associated loading and truck parking facilities, employee parking, stormwater management features, utility infrastructure, and other associated site improvements will occur. Improvements associated with the solar array include various solar infrastructure components, access drives and fencing. Hydrologically, the site is located in the Merrimack River watershed, which is ±5,010 square miles, of which the project site encompasses a nominal amount of less than 0.0 1%. Under the proposed conditions, the majority of the site will drain through closed pipe networks to the stormwater treatment systems before discharging off site at a controlled rate.The existing discharge locations are being maintained and no new discharge locations from the site are being incorporated. A portion of the site will sheet flow to the abutting properties as it does under existing conditions. Size of Construction Project What is the size of the property (in acres), the total area expected to be disturbed by the construction activities (in acres), and the maximum area expected to be disturbed at any one time? The proposed redevelopment consists of several parcels totaling ±168 acres (Lot A: ±59 acres, Lot B: ±1 10 acres) EPA SWPPP Template, Version 1.0 6 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 The Total Limit of Disturbance of the proposed development is ±1 13.5 acres. While the project is anticipated to include the total limit of disturbance throughout construction, the project is broken into 3 phases: 1. Phase 1: Disconnection and relocation of rooftop and ground mounted solar panels, demolition of existing buildings and utilities, rerouting of utilities to Building Nos. 20 and 21. ±1 month 2. Phase 2: Earthwork, site utilities, retaining walls, and stormwater management facilities. ±5 months 3. Phase 3: Construction of building, final site paving,striping, site stabilization and plantings, and solar field installation. ±12 months Construction Support Activities (only provide if applicable) Describe any construction support activities for the project (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) Construction materials storage stockpile areas are delineated on the Sediment and Erosion Control Plans. 2.4 Sequence and Estimated Dates of Construction Activities Instructions (see CGP Part 7.2.5): — Describe the intended construction sequence and timing of major activities. — For each phase of construction, include the following information: ✓ Installation of stormwater controls, and when they will be made operational; ✓ Commencement and duration of earth-disturbing activities, including clearing and grubbing, mass grading, site preparation (i.e., excavating, cutting and filling), final grading, and creation of soil and vegetation stockpiles requiring stabilization; ✓ Cessation, temporarily or permanently, of construction activities on the site, or in designated portions of the site; ✓ Final or temporary stabilization of areas of exposed soil. The dates for stabilization must reflect the applicable deadlines to which you are subject to in Part 2.2.1; and ✓ Removal of temporary stormwater conveyances/channels and other stormwater control measures, removal of construction equipment and vehicles, and cessation of any pollutant-generating activities. — The construction sequence must reflect the following requirements: ✓ Part 2.1.1.1 (area of disturbance); ✓ Part 2.1.1.3.a (installation of stormwater controls); and ✓ Parts 2.2.1.1, 2.2.1.2, 2.2.1.3 (stabilization deadlines). — Also, see EPA's Construction Sequencing BM P Fact Sheet at http://www.epa._c o� v/npdes/stormwater/menuofbmps/construction/cons sect) EPA SWPPP Template, Version 1.0 7 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Prior to work commencing on site and the on-site pre-construction meeting, the following documents and materials shall be submitted and then the contractor, applicant, project engineer, erosion control monitor and LSP shall arrange a sit-down meeting with the Conservation Administrator (and Planning Department staff, if available) to review and establish the following: ■ The Stormwater Pollution Prevention Plan (SWPPP) shall be submitted and provisions therein shall be reviewed, to ensure their understanding and expectations for construction. ■ A narrative shall be submitted that provides a construction sequence/means and methods for limiting the time that RCA is exposed to the elements while being manipulated. Means and methods for materials management and their exposure time shall be reviewed and memorialized. During the subcommittee meetings and the public hearings, this concept was discussed and anticipated to be incorporated into project implementation. ■ A detailed sequence/schedule of construction, installation of sedimentation/erosion control devices and re-vegetation that align with the planset Phase I, II, and III for the Soil Erosion & Sedimentation Control program for the site,which identifies a specific suite of erosion control BMP's for said phases. These phases shall be reviewed during the sit-down meeting. ■ De-watering means and methods, should they be required. PHASE 1 Description of Phase: Demolition, solar relocation & utility rerouting Approximate Duration of Phase:August 2020 to September 2020 (±2 month) a) A pre-construction meeting shall be held by all members of the project team prior to land disturbing activities to discuss project staging and installation of erosion control measures. Notify all appropriate town/state departments prior to commencement of on-site activities and in accordance with all approvals. b) Construct stabilized construction exit/entrances and install all required soil erosion and sediment control measures, to include compost filter tubes &silt fences, straw wattles, and inlet protection at locations as shown on Sheets CE101, 102, and CE103. c) Disconnect and relocate Building 70 rooftop, and ground mounted, solar panels. d) Route existing utilities to serve existing Buildings Nos. 20 & 21, cut and cap utilities to other buildings and structures. e) Begin building and site demolition. PHASE 2 Description of Phase: Earthwork, site utilities, retaining walls EPA SWPPP Template, Version 1.0 8 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Approximate Duration of Phase: October 2020 to February 2021 (±5 months) a) Maintain stabilized construction entrances, perimeter soil erosion and sediment controls, and existing inlet protection. Construct and install soil erosion and sediment control measures to include sediment basins, sediment traps, and concrete washouts, stabilized diversion channels with stone check dams, soil erosion control blankets, and future infiltration basin protection area controls at locations as shown on Sheets CE201, CE202, and CE203. b) Cap &cut-off stormwater pipes that are to be abandoned flows prior to removal of on-site existing inlet protection. c) Begin earthwork, mass grading &site preparation, creation of soil and vegetation stockpiles requiring stabilization, retaining wall construction, and site utilities construction for new distribution facility. Note: for stockpiles that will be unused for 14 or more days, provide cover or appropriate temporary stabilization consistent with CGP 2.2.14. d) Implement and maintain stabilization measures (e.g. seeding protected by erosion controls until vegetation is established, sodding, mulching erosion control blankets, hydromulch, gravel, etc.) that minimize erosion from exposed portions of the site in accordance with CGP 2.2.14a and 2.2.14b. PHASE 3 Description of Phase: Building construction &site stabilization Approximate Duration of Phase:March 2021 to march 2022 (±12 months) a) Maintain and install soil erosion and sediment control measures in locations as shown on Sheets C E301, C E302, and C E303. b) Begin building construction. c) Establish uniform, perennial vegetation that provides 70 percent or more of the cover that is provided by vegetation native to local undisturbed areas for final stabilization. d) Complete building and site construction. e) Remove all soil erosion and sediment control measures, only after all exposed earth surfaces are stabilized. f) Remove stabilized construction exits/entrances only prior to pavement construction in these areas. Removal of all construction equipment and vehicles. EPA SWPPP Template, Version 1.0 9 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 2.5 Allowable Non-Stormwater Discharges List of Allowable Non-Stormwater Discharges Present at the Site Type of Allowable Non-Stormwater Discharge Likely to be Present at Your Site? Discharges from emergency fire-fighting activities [:] YES ® NO Fire hydrant flushing EYES [:] NO Landscape irrigation ® YES ❑ NO Waters used to wash vehicles and equipment ® YES ❑ NO Water used to control dust ® YES ❑ NO Potable water including uncontaminated water line flushing ❑YES ® NO Routine external building wash down ❑YES ® NO Pavement wash waters ❑YES ® NO Uncontaminated air conditioning or compressor condensate E:1YES E NO Uncontaminated, non-turbid discharges of ground water or spring water ❑ YES ® NO Foundation or footing drains ® YES ❑ NO Construction dewatering water ® YES ❑ NO (Note: You are reminded of the requirement to identify the likely locations of these allowable non- stormwater discharges on your site map. See Section 2.6, below, of the SWPPP Template.) 2.6 Site Maps Site Maps are included in Appendix A.The plans included consist of General Notes, ALTAMSPS Land Title Surveys, Site Plans, Site Details, Grading & Drainage Plans, Grading & Drainage Details, Utility Plans, Soil Erosion &Sediment Control Plans, Soil Erosion &Sediment Control Details, Landscape Plans and Landscape Details. EPA SWPPP Template, Version 1.0 10 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 SECTION 3: OPERATOR MEANS &METHODS SECTION 4: DOCUMENTATION OF COMPLIANCE WITH OTHER FEDERAL REQUIREMENTS 3.1 Endangered Species Protection Instructions (see CGP Parts l.l.e, 7.2.14.1, Appendix D, and the "Endangered Species Protection" section of the Appendix J- NOI form): Follow the process in Appendix D of the permit for determining which eligibility criterion (A-E) you have met with respect to the protection of endangered species. You will - Include documentation supporting your determination of eligibility. - Additional information on Endangered Species Act (ESA) provisions for EPA's Construction General Permit is at www.epa.aov/npdes/stormwater/esa Eligibility Criterion Under which criterion listed in Appendix K are you eligible for coverage under this permit? M A F-1 B El C F-1 D [:] E For reference purposes, the eligibility criteria listed in Appendix D are as follows: Criterion A. No ESA-listed species and/or designated critical habitat present in action areas. Supporting Documentation Provide documentation for the applicable eligibility criterion you select in Appendix K, as follows: For criterion A, indicate the basis for your determination that no federally-listed threatened or endangered species' designated critical habitat(s) are likely to occur in your site's action area (as defined in Appendix A of the permit). Check the applicable source of information you relied upon: F-1 Specific communication with staff of the U.S. Fish & Wildlife Service or National Marine Fisheries Service. Z Publicly available species list. F-1 Other source: EPA SWPPP Template, Version 1.0 1 1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 3.2 Historic Preservation Instructions (see CGP Part 1.1.f, 7.2.14.2,Appendix E, and the "Historic Preservation" section of the Appendix J - NOI form): Follow the screening process in Appendix E of the permit for determining whether your installation of subsurface earth-disturbing stormwater controls will have an effect on historic properties. - Include documentation supporting your determination of eligibility. - To contact your applicable state or tribal historic preservation office, information is available at www.achp._gov/programs/html. Appendix E, Step 1 Do you plan on installing any of the following stormwater controls at your site? Check all that apply below, and proceed to Appendix E,Step 2. ❑ Dike Z Berm Z Catch Basin Z Pond Z Stormwater Conveyance Channel (e.g., ditch, trench, perimeter drain, swale, etc.) Z Culvert Z Other type of ground-disturbing stormwater control: Dry detention basins, infiltration basins (Note: If you will not be installing any ground-disturbing stormwater controls, no further documentation is required for Section 3.2 of the Template.) Appendix E, Step 2 If you answered yes in Step 1, have prior surveys or evaluations conducted on the site already determined that historic properties do not exist, or that prior disturbances at the site have precluded the existence of historic properties? ® YES ❑ NO ■ If yes, no further documentation is required for Section 3.2 of the Template. ■ If no, proceed to Appendix E, Step 3. Appendix E, Step 3 If you answered no in Step 2, have you determined that your installation of subsurface earth- disturbing stormwater controls will have no effect on historic properties? ❑ YES ❑ NO N/A If yes, provide documentation of the basis for your determination. If no, proceed to Appendix E, Step 4. EPA SWPPP Template, Version 1.0 12 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix E, Step 4 If you answered no in Step 3, did the State Historic Preservation Officer (SHPO),Tribal Historic Preservation Office (THPO), or other tribal representative (whichever applies) respond to you within 15 calendar days to indicate whether the subsurface earth disturbances caused by the installation of stormwater controls affect historic properties? ❑ YES ❑ NO N/A If no, no further documentation is required for Section 3.2 of the Template. If yes, describe the nature of their response: ❑ Written indication that adverse effects to historic properties from the installation of stormwater controls can be mitigated by agreed upon actions. ❑ No agreement has been reached regarding measures to mitigate effects to historic properties from the installation of stormwater controls. ❑ Other: 3.3 Safe Drinking Water Act Underground Injection Control Requirements Do you plan to install any of the following controls? Check all that apply below. ❑ Infiltration trenches (if stormwater is directed to any bored, drilled, driven shaft or dug hole that is deeper than its widest surface dimension, or has a subsurface fluid distribution system) ® Commercially manufactured pre-cast or pre-built proprietary subsurface detention vaults, chambers, or other devices designed to capture and infiltrate stormwater flow ® Drywells, seepage pits, or improved sinkholes (if stormwater is directed to any bored, drilled, driven shaft or dug hole that is deeper than its widest surface dimension, or has a subsurface fluid distribution system) EPA SWPPP Template, Version 1.0 13 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 SECTION 4: EROSION AND SEDIMENT CONTROLS 4.1 Natural Buffers or Equivalent Sediment Controls Instructions(see CGP Parts 2.1.2.1 and 7.2.9, and Appendix G): This section only applies to you if a surface water is located within 50 feet your construction activities. If this is the case, consult CGP Part 2.1.2.1 and Appendix G for information on how to comply with the buffer requirements. - Describe the compliance alternative (CGP Part 2.12.1.a.i, ii, or iii) that was chosen to meet the buffer requirements, and include any required documentation supporting the alternative selected. The compliance alternative selected must be maintained throughout the duration of permit coverage. However, if you select a different compliance alternative during your period of permit coverage, you must modify your SWPPP to reflect this change. - If you qualify for one of the exceptions in CGP Part 2.1.2.1.e, include documentation related to your qualification for such exceptions. Buffer Compliance Alternatives Are there any surface waters within 50 feet of your project's earth disturbances? F� YES ❑ NO (Note: If no, no further documentation is required for the SWPPP Template.) Check the compliance alternative that you have chosen: F-1 I will provide and maintain a 50-foot undisturbed natural buffer. (Note (1): You must show the 50-foot boundary line of the natural buffer on your site map.) (Note (2): You must show on your site map how all discharges from your construction disturbances through the natural buffer area will first be treated by the site's erosion and sediment controls. Also, show on the site map any velocity dissipation devices used to prevent erosion within the natural buffer area.) � I will provide and maintain an undisturbed natural buffer that is less than 50 feet and is supplemented by additional erosion and sediment controls,which in combination achieves the sediment load reduction equivalent to a 50-foot undisturbed natural buffer. Stabilized temporary diversion channels with stone check dams at 100' intervals will be utilized to convey stormwater runoff away from the on-site surface waters. The stormwater will be treated in sediment basins as indicated on sheet CE203. The on-site surface waters will be protected with a compost filter tube berm and silt fence perimeter. (Note (1): You must show the boundary line of the natural buffer on your site map.) (Note (2): You must show on your site map how all discharges from your construction disturbances through the natural buffer area will first be treated by the site's erosion and sediment controls. Also, show on the site map any velocity dissipation devices used to prevent erosion within the natural buffer area.) EPA SWPPP Template, Version 1.0 14 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 F-1 It is infeasible to provide and maintain an undisturbed natural buffer of any size, therefore I will implement erosion and sediment controls that achieve the sediment load reduction equivalent to a 50-foot undisturbed natural buffer. F-1 I qualify for one of the exceptions in Part 2.1.2.1.e. (If you have checked this box, provide information on the applicable buffer exception that applies, below.) Buffer Exceptions Which of the following exceptions to the buffer requirements applies to your site? F-1 There is no discharge of stormwater to the surface water that is located 50 feet from my construction disturbances. (Note: If this exception applies, no further documentation is required for Section 4.1 of the Template.) F-1 No natural buffer exists due to preexisting development disturbances that occurred prior to the initiation of planning for this project. (Note (1): If this exception applies, no further documentation is required for Section 4.1 of the Template.) (Note (2): Where some natural buffer exists but portions of the area within 50 feet of the surface water are occupied by preexisting development disturbances, you must still comply with the one of the CGP Part 2.1.2.1.a compliance alternatives.) F-1 Fora "linear project" (defined in Appendix A), site constraints (e.g., limited right-of-way) make it infeasible for me to meet any of the CGP Part 2.1.2.1.a compliance alternatives. F-1 The project qualifies as "small residential lot" construction (defined in Part 2.1.2.1.e.iv and in Appendix A). F-1 Buffer disturbances are authorized under a CWA Section 404 permit. (Note (1): If this exception applies, no further documentation is required for Section 4.1 of the Template.) (Note (2): This exception only applies to the limits of disturbance authorized under the Section 404 permit, and does not apply to any upland portion of the construction project.) F-1 Buffer disturbances will occur for the construction of awater-dependent structure or water access area (e.g., pier, boat ramp, and trail). (Note (1): If this exception applies, no further documentation is required for Section 4.1 of the Template.) EPA SWPPP Template, Version 1.0 15 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 4.2 Perimeter Controls Instructions (see CGP Parts 2.1.2.2 and 7.2.10): - Describe sediment controls that will be used (e.g., silt fences, filter berms, temporary diversion dikes, or fiber rolls) to meet the Part 2.1.2.2 requirement to "install sediment controls along those perimeter areas of your site that will receive stormwater from earth- disturbing activities." - For linear projects,where you have determined that the use of perimeter controls in portions of the site is impracticable, document why you believe this is to be the case. - Also see, EPA's Silt Fence BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/silt fences or Fiber Rolls BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/fiber rolls General Perimeter controls for this project will consist of the installation of a perimeter Silt Fence, Compost Filter Tube, Compost Filter Tube Berm &Silt Fence to prevent any soil runoff onto Osgood Street or the existing parking areas that shall not be disturbed. The Silt Fence will prevent sediment laden storm runoff from leaving the construction site or disturbed area. Specific Perimeter Controls Perimeter Control #1 Perimeter Control Description ■ The Silt Fence shall have a minimum height of 18 inches and will be installed with a compost filter tube berm in wetland sensitive areas. The Silt Fence shall be constructed as a first step in any land-disturbing activity and shall be made functional before upslope land disturbance takes place. ■ Design specifications and details are included within Appendix A-Site Maps. Installation ■ The Silt Fence shall been installed shall be removed after temporary measures are no longer needed, unless otherwise requested. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation. Maintenance Requirements ■ Periodic inspections are required and must be conducted after each rain event. Maintenance shall consist of inspection and removal of accumulated sediment before it has accumulated to 25%of the above-ground height of any perimeter control. Sagging, frayed, torn or otherwise damaged fabric should be repaired or replaced. Repair end runs and undercutting. Inspect reinforcement and staking materials for structural integrity and replace when necessary. Perimeter Control #2 Perimeter Control Description ■ The Compost Filter Tube (Berm) will be installed against the upslope side of the Silt Fence. Compost Filter Tube shall have a minimum diameter of 12" (18" if berm) when installed and shall have firm contact with ground to prevent flow underneath. The Compost Filter Tube shall be EPA SWPPP Template, Version 1.0 16 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 installed along with the silt fence as a first step in any land-disturbing activity and shall be made functional before upslope disturbance takes place. ■ Design specifications and details are included within Appendix A-Site Maps. Installation ■ The Compost Filter Tube installed shall be removed after temporary measures are no longer needed, unless otherwise requested. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation. Maintenance Requirements ■ If fabric is torn, these areas should be immediately repaired by manually moving perimeter control back into place, if disturbed. Continued heavy construction traffic may destroy the fabric mesh, reduce the dimensions, and reduce the effectiveness of the perimeter control. Routine inspection should be conducted within 24 hours of a runoff event or as designated by the regulating authority. Perimeter control should be regularly inspected to make sure they maintain their shape and are producing adequate hydraulic flow-through. Sediment deposits should be removed when they reach half the height of the berm/sock. 4.3 Sediment Track-Out Instructions (see CGP Parts 2.1.2.3 and 7.2.10): - Describe stormwater controls that will be used to "minimize the track-out of sediment onto off-site streets, other paved areas, and sidewalks from vehicles exiting your construction site." - Describe location(s) of vehicle exit(s), procedures to remove accumulated sediment off-site (e.g., vehicle tracking), and stabilization practices (e.g., stone pads or wash racks or both) to minimize off-site vehicle tracking of sediment. Also include the design, installation, and maintenance specifications for each control. - Also, see EPA's Construction Entrances BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/cons entrance General ■ Stabilized Construction Entrance/Stabilized Construction Pad shall be established on site located within the drive aisles, located throughout the construction area. The construction entrances are constructed in accordance with local regulatory criteria. The entrances are located within the perimeter Silt Fence. Specific Track-Out Controls Track-Out Control # 1 Track-Out Control Description ■ A detailed description of the Construction Entrance/Stabilized Construction Pad can be found on the Soil Erosion &Sediment Control Details within Appendix A-Site Maps. ■ The Construction Entrance/Stabilized Construction Pad shall be a minimum of 50 Feet in length, 10 feet in width, incorporating 3" course aggregate at a minimum 12" thickness. EPA SWPPP Template, Version 1.0 17 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Installation ■ Prior to earth disturbing activities, pavement, and concrete slab removal. Maintenance Requirements ■ Where sediment has been tracked-out from your site onto the surface of off-site streets, other paved areas, and sidewalks, you must remove the deposited sediment by the end of the same work day in which the track-out occurs or by the end of the next work day if track-out occurs on a non-work day. You must remove the track-out by sweeping, shoveling, or vacuuming these surfaces, or by using other similarly effective means of sediment removal. You are prohibited from hosing or sweeping tracked-out sediment into any stormwater conveyance (unless it is connected to a sediment basin, sediment trap, or similarly effective control), storm drain inlet, or surface water. ■ If pad is muddy, stone is too small (install larger stone); if pad is too thin (install additional stone); and/or install additional filter fabric under pad. If sediment is washing into road, improve upgradient runoff controls, lengthen pad, and/or widen flare of pad at road interface. ■ Associated pavement and roadwasys shall be swept at least weekly or as directed by the Erosion Control monitor, the Site Supervisor, Project Manager, or Conservation staff for as long as the site remains exposed and un-stabilized. If material is tracked beyond the construction entrance onto the adjcaent public roadway, it will be swept up daily. ■ Regarding haul roads, apply dust control measures whenever necessary (soil wetting, covered trucks, etc). [Repeat as needed for individual track-out controls.] 4.4 Stockpiled Sediment or Soil& Recycled Concrete Aggregate Instructions (see CGP Parts 2.1.2.4 and 7.2.10): — Describe stormwater controls and other measures you will take to minimize the discharge of sediment or soil particles from stockpiled sediment or soil. Include a description of structural practices (e.g., diversions, berms, ditches, storage basins), including design, installation, and maintenance specifications, used to divert flows from stockpiled sediment or soil, retain or detain flows, or otherwise limit exposure and the discharge of pollutants from stockpiled sediment or soil. — Also, describe any controls or procedures used to minimize exposure resulting from adding to or removing materials from the pile. General ■ As part of the Phase I sediment controls, soils will be loaded directly into dump trucks and removed from the site, or soil stockpile areas will be established on-site. The stockpile areas will be surrounded by perimeter controls, poly wrapped haybale berms and compost filter tube &silt fencing, as identified on the referenced drawings and stabilized if unused for more than 14-days (e.g., hydroseed with an appropriate annual or winter rye seed mix and tackifier). The initial stockpile area will be established at the outset of the construction activities on site. As construction progresses, stockpile areas may be relocated as needed but must maintain the erosion and sediment control protection described above. EPA SWPPP Template, Version 1.0 18 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 ■ Recycled Concrete Aggregate (RCA) shall not be stockpiled or reused by the Applicant within areas on Lot B subject to protection under the Wetlands Protection Act and North Andover Wetlands Bylaw, including but not limited to the 100 foot Buffer Zone, Bordering Land Subject to Flooding or Riverfront Area. More specifically, the placement of RCA shall be strictly limited to the footprint of the proposed warehouse building foundation that is located on Lot B outside the 100 foot Buffer Zone and other jurisdictional areas as depicted on the "Recycled Concrete Asphalt Pavement Plan," sheet CS200, prepared by Langan Engineering and Environmental Services, dated 01/24/2020. The use of RCA in other locations on the project site as delineated by the aforementioned record drawings is specifically prohibited, including but not limited to all components of the stormwater management system. Temporary stockpiles of RCA shall be located on Lot B outside of areas subject to protection under the Wetlands Protection Act and North Andover Wetlands Bylaw, including but not limited to the 100 foot Buffer Zone, Bordering Land Subject to Flooding or Riverfront Area. Said stockpiles shall be covered and protected as per the plan detail and notes on sheets CE501 and C3502 Soil Erosion &Sediment Control Details I, II -last revised 1 1/08/19 & 10/17/19 respectively, of the Final permit Drawings of Record: "Permit Site Plans- North Andover, Massachusetts, Proposed Redevelopment for Hillwood Enterprises, LP and 1600 Osgood Street, LLC", prepared by Langan Environmental Engineering and Environmental Services. Specific Stockpile Controls Stockpile Control # I Stockpiled Sediment/Soil Control Description ■ Stockpiles shall be incorporated on site and surrounded using Compost Filter Tube &Silt Fence and Poly Wrapped Haybale Berms. ■ A detailed description of the Temporary Soil/Concrete Stockpile can be found within the Notes on the Soil Erosion &Sediment Control Details within Appendix A-Site Maps. Installation ■ At beginning of project Maintenance Requirements ■ At a minimum, you must comply with following requirement in CGP Part 2.1.2.4.d: Do not hose down or sweep soil or sediment accumulated on pavement or other impervious surfaces into any stormwater conveyance (unless connected to a sediment basin, sediment trap, or similarly effective control), storm drain inlet, or surface water. 4.5 Minimize Dust General ■ Dust Control will be accomplished by use of vegetative cover, mulch, spray-on adhesives, tillage,water sprinkling, dust barriers, or stone. Dust control will be applied on an as-needed basis, specifically when dry or windy weather increases site-wide dust kick-up. Specific Dust Controls EPA SWPPP Template, Version 1.0 19 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Dust Control # 1 Water Truck Installation ■ As needed Maintenance Requirements ■ As needed 4.6 Minimize the Disturbance of Steep Slopes Instructions (see CGP Parts 2.1.2.6 and 7.2.10): — Describe how you will minimize the disturbance to steep slopes (as defined by CGP Appendix A). — Describe controls (e.g., erosion control blankets, tackifiers), including design, installation and maintenance specifications, that will be implemented to minimize sediment discharges from slope disturbances. — Also, see EPA's Geotextiles BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/geotextiles General ■ There are existing or proposed steep slopes at the site. In these areas we will install soil erosion control blankets and provide soil roughening. 4.7 Topsoil General ■ Topsoil will be stockpiled on site in designated locations. 4.8 Soil Compaction Instructions (see CGP Parts 2.1.2.8 and 7.2.10): In areas where final vegetative stabilization will occur or where infiltration practices will be installed, describe the controls, including design, installation, and maintenance specifications that will be used to restrict vehicle or equipment access or condition the soil for seeding or planting. General ■ The majority of proposed construction shall be impervious cover (building, asphalt, concrete, gravel cover). The areas of vegetation will be accessible only to lightly loaded landscape equipment or hand operated equipment and tools. Upon completion of grading, construction equipment and activities are to be avoided within areas designed for infiltration. EPA SWPPP Template, Version 1.0 20 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 4.9 Storm Drain Inlets Instructions (see CGP Parts 2.1.2.9 and 7.2.10): - Describe controls (e.g., inserts, rock-filled bags, or block and gravel) including design, installation, and maintenance specifications that will be implemented to protect all inlets that will receive stormwater from your construction activities, and that you have authority to access. - Also, see EPA's Storm Drain Inlet Protection BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/storm drain General ■ At-grade inlets and curb inlets will be provided with inlet protection throughout the construction activities until final stabilization is achieved. This inlet protection will be installed at the onset of the construction activities. Specific Storm Drain Inlet Controls Inlet Protection Control Description ■ The Inlet Protection shall consist of an inlet protection which is placed under the grate. Straw bales may be placed around catch basins after the initial grading to filter and divert sediment until final paving is complete. ■ A detailed description of the Inlet Protection can be found on the Soil Erosion &Sediment Control Details within Appendix A-Site Maps. Installation ■ Existing Inlet controls will be implemented prior to demolition and earth disturbing activities and proposed controls at the time of drain construction. Maintenance Requirements ■ The protection measures will be cleaned, removed, or replaced as sediment accumulates, the filter becomes clogged, and/or performance is compromised. Where there is evidence of sediment accumulation adjacent to the inlet protection measure, the deposited sediment will be removed by the end of the same work day in which it is found or by the end of the following work day if removal by the same work day is not feasible. Worn or ripped sacks will be replaced. 4.10 Constructed Stormwater Conveyance Channels Instructions (see CGP Parts 2.1.3.1 and 7.2.10): If you will be installing a stormwater conveyance channel, describe control practices (e.g., velocity dissipation devices), including design specifications and details (volume, dimensions, outlet structure), that will be implemented at the construction site. General ■ There is no permanent stormwater conveyance channel associated with this construction activity. EPA SWPPP Template, Version 1.0 21 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 4.11 Sediment Basins Instructions (see CGP Parts 2.1.3.2 and 7.2.10): If you will install a sediment basin, include design specifications and other details (volume, dimensions, outlet structure) that will be implemented at in conformance with CGP Part 2.1.3.2. - At a minimum, sediment ponds must provide storage for either (1) the calculated volume of runoff from the 2-year, 24-hour storm (see CGP App. H), or (2) 3,600 cubic feet per acre drained - Sediment ponds must also utilize outlet structures that withdraw water from the surface, , unless infeasible - Also, see EPA's Sediment Basin BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/sediment basins General ■ Sediment basins have been designed to provide storage for the 2-year 24-hour storm, sediment basins utilize outlet control risers and overflow emergency spillways to discharge collected runoff. Specific Sediment Basin Controls Sediment Basin Description ■ Sediment basins have been designed to provide storage for the 2-year 24-hour storm. Flows are directed along stabilized temporary diversion channels,with stone check dams at 100-ft intervals, into the sediment basins/traps. All flows will be discharged across a rip rap outlet into the basins to prevent scouring. Basins with a contributing drainage are greater than 5 acres are to include an 8" perforated PVC underdrain in a gravel filled trench and riser piping with trash guards. 12-ft wide rip-rap lined emergency spillways are directed to the nearest existing inlet to prevent further sedimentation issues on-site. These inlet pipe runs are to be maintained as long as possible for use as an emergency discharge. ■ Detailed descriptions of the Sediment Basins/Traps can be found on the Soil Erosion &Sediment Control Plans (Phase 2) within Appendix A-Site Maps. Installation ■ Sediment basins/traps are to be installed as demolition activities are completed in each accompanying drainage area in locations shown on sheets CE201, CE202, and CE203. Maintenance Requirements ■ Temporary sediment basins/traps are to be inspected at least once a week and within 24 hours of the end of a storm with a rainfall amount of 0.5 inch or greater. Check the outlet to ensure that it is structurally sound and has not been damaged by erosion or construction equipment. The height of the outlet should maintain at least 1 foot below the crest of the embankment. Also check for sediment accumulation and filtration performance. When sediments have accumulated to one half the minimum required volume of the wet storage, dewater as needed, remove sediments and restore the trap to its original dimensions. Dispose of removed sediment in a suitable area and in such a manner that it will note erode and sedimentation problems. The temporary sediment basin/trap may be removed upon the stabilization of the contributing EPA SWPPP Template, Version 1.0 22 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 drainage area. If removed, refer to grading and drainage plans to how the area is to be graded and stabilized upon removal. ■ Heavy equipment is restricted from use within temporary sediment basins and traps. 4.12 Chemical Treatment Instructions (see CGP Parts 2.1.3.3 and 7.2.10.2): If you are using treatment chemicals at your site, provide details for each of the items below. This information is required as part of the SWPPP requirements in CGP Part 7.2.10.2. The use of chemical treatments is not proposed or anticipated at this site. 4.13 Dewatering Practices Should de-watering activities be anticipated, prior to implementation in the field, means and methods shall be reviewed and approved by the Conservation Department and shall be proposed outside the 100-Foot Buffer Zone. All dewatering activities shall be supervised and witnessed by the designated erosion control monitor. Dewatering activities shall be monitored daily by the erosion control monitor to ensure that sediment laden water is appropriately settled prior to discharge toward the wetland resource area. No discharge of water is allowed directly into an area subject to jurisdiction of the Wetlands Protection Act and/or the North Andover Wetland Bylaw. If other emergency de-watering requirements arise, the applicant shall submit a contingency plan to the Commission for approval, the applicant shall submit a contingency plan to the Commission for approval,which provides for the pumped water to be contains in a settling basin, to reduce turbidity prior to discharge into a resource area. Based on the proposed construction activities, the depths of proposed excavations, and the known ground water table elevation, dewatering practices are anticipated to be required for deeper excavations, foundations, and site features. Water infiltration to the foundation excavation can likely be controlled using gravity-fed sump pumps via gravel trenches or sumps assisted with collector trenches. The dewatering measures implemented should adequately dewater all foundation-related excavations such that compaction of footing subgrades is feasible. Final dewatering measures required have been evaluated and laid out by the contractor in the following dewatering plan: General D.W. White (DWW) shall maintain site grades to direct runoff in the excavation to the dewatering sumps. The effective radius of each dewatering sump can be enhanced via inclusion of stone placement. In addition, D.W. White shall manage the dewatering effluent to minimize the potential for erosion, damage, or contamination of the site. Following dewatering, the dewatering system elements shall be removed in their entirety. Dewatering Sumps Submersible electric pumps located within sumps, presented in Typical Sump & Pump Detail below, will be utilized by DWW to dewater the excavation. The final number and combination of sumps will be determined by DWW based on the actual conditions encountered in the field. EPA SWPPP Template, Version 1.0 23 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Pumps Pumps are expected to be 2-inch diameter discharge electric submersible pumps. A 1.0-HP single phase Goulds or equal electric submersible pump can deliver about 30 GPM at a total dynamic head of up to about 40 feet. Based on this a 1.0-HP submersible pump is expected to be installed at each sump location. Discharge Lines Discharge lines will run from the submersible pumps to a recharge area onsite. It is anticipated that a combination of pipe, flexible hose, and quick-connect connections will be used for the discharge lines. The ultimate number and orientation of discharge lines will be determined by DWW based on actual field conditions. Filter bags may be placed on the end of the discharge line as necessary to reduce silt in the dewatering effluent. Recharge Infiltration Basin DWW will construct onsite recharge infiltration basins in the vicinity of the location the groundwater was pumped from. The basins will consist of excavating a trench or basin, and if necessary line with stone. 1Z HOPE OR FYC PIPE F SLEEVE AS REQD FL . OVERLAP 24 IN BOTTOM OF 77 a a ✓i' d � r y SUBWWRSIMIAM r M` (CAPABLE Off" r^ n v77, o,a -CJWS H TYPICAL SUMP MUD,PUMPCIETAIL Instructions (see CGP Parts 2.1.3.4 and 7.2.10): If you will be discharging stormwater that is removed from excavations, trenches, foundations, vaults, or other similar points of accumulation, include design specifications and details of all dewatering practices that are installed and maintained to comply with CGP Part 2.1.3.4. EPA SWPPP Template, Version 1.0 24 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 4.14 Other Stormwater Controls Instructions: Describe any other stormwater controls that do not fit into the above categories. ■ No stormwater controls, other than those described above, will be installed at the site. ■ Snow and ice melt shall be monitored to minimize negative environmental impact to resource areas and buffer zones. Avoid plowing, pushing, blowing, or storing excess snow or other debris in or near resource areas and buffer zones. ■ No sodium-based products shall be used for control of ice or snow within 100 feet of the wetland. 4.15 Site Stabilization Instructions (see CGP Parts 2.2 and 7.2.10): The CGP requires you to immediately initiate stabilization when work in an area of your site has permanently or temporarily stopped, and to complete certain stabilization activities within prescribed deadlines. See CGP Part 2.2.1. The CGP also requires that stabilization measures meet certain minimum criteria. See CGP Part 2.2.2. For your SWPPP, you must include the following: — Describe the specific vegetative and/or non-vegetative practices that will be used to stabilize exposed soils where construction activities have temporarily or permanently ceased. Avoid using impervious surfaces for stabilization whenever possible. — Also, see EPA's Seeding BMP Fact Sheet at www.epa.clov/npdes/stormwater/menuofbmps/construction/seedinq — Once you begin construction, consider using the Grading/Stabilization Activities log in Appendix H of the Template to document your compliance with the stabilization requirements in CGP Part 2.2 Site Stabilization Practice (only use this if you are not located in an arid, semi-arid, or drought-stricken area) ® Vegetative ® Non-Vegetative ® Temporary ® Permanent Description of Practice ■ See Soil Erosion &Sediment Control Notes (Sheet CE501) ■ For areas that are not meant to remain actively utilized, stabilization procedures will occur on the following schedule in compliance with Section 2.2.14 of the CGP: o Initiate the installation of stabilization measures immediately in any areas of exposed soil where construction activities have permanently ceased or will be temporarily inactive for 14 or more calendar days; and o Complete the installation of stabilization measures as soon as practicable, but no later than 14 calendar days after stabilization has been initiated. ■ Imported and/or structural fill shall be well-graded sand and gravel having a maximum particle size of 3 inches and no more than 10% passing the No. 200 sieve. Any approved imported EPA SWPPP Template, Version 1.0 25 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 and/or structural fill shall be certified clean fill free of hazardous substances and meeting all applicable regulations. Notwithstanding, any imported fill used in connection with this project shall be clean fill, containing no trash, refuse, rubbish or debris, including but not limited to roots, concrete, other non-soil constituents, and other deleterious or compressible materials such as lumber, bricks, plaster,wire, lath, paper, cardboard, pipe, glass, processed glass aggregate, concrete, recycled concrete aggregate, tires, ashes, refrigerators, motor vehicles or parts of any of the foregoing. Any fill imported to the site must be accompanied by a certificate of origin or an analysis certifying cleanliness-whichever is most applicable as determined by the Conservation Commission or its staff. ■ All exposed soil finish grade surfaces shall be immediately landscaped and stabilized, or loamed, seeded and mulched,with a layer of mulch hay. All disturbed areas must be graded, loamed and seeded prior to November 1 st of each year. Outside of the growing season, beyond November 15th of any construction year, exposed soil finish grade surfaces shall be stabilized with a layer of mulch hay, straw, tackifier or biodegradable erosion control blanket (as appropriate depending on slope, or other conditions etc...) until climate conditions allow for seeding. During construction, any area of exposed soils that will be left idle for more than 30 days shall be stabilized with a layer of mulch hay or other means approved by the NACC. Installation ■ Project Duration Maintenance Requirements ■ See Soil Erosion &Sediment Control Notes (Sheet CE501) SECTIONS: POLLUTION PREVENTION STANDARDS 5.1 Potential Sources of Pollution Construction Site Pollutants Potential sources of pollution include exposed soils or topsoil, and construction material debris. No major sources of pollution have been identified at this time. All sources of soil erosion pollution or construction pollution to stormwater bodies will be mitigated with the use of Silt Fence and Compost Filter Tubes, Compost Filter Tube Berms and construction fencing around the construction area. Pollutants or Pollutant Location on Site Poll utant-Generatin Constituents or reference SWPPP site ma g Activity that could be discharged if ( p ( g where this is shown exexposed to stormwater ) p ) Dewatering Sediment Concrete waste will be placed in designated dumpster (or comparable structure) and Foundation Work Concrete Washout concrete washout will occur in designated containment areas outside of wetland resource areas and buffer zones. Equipment Refueling & Diesel and Gasoline, Re-fueling will occur outside Maintenance Hydraulic and Engine Oil wetland resource areas and EPA SWPPP Template, Version 1.0 26 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Pollutants or Pollutant Location on Site Poll utant-Generatin Constituents or reference SWPPP site ma g Activity that could be discharged if ( p ( g where this is shown exexposed to stormwater ) p ) buffer zones. Oil and maintenance of equipment shall occur off-site. Sanitary facilities will be provided at designated locations. Materials generated during demolition will include concrete, metals,wood, glass Solid Waste Storage and Construction Debris and and plastics. Materials g characterized by the MassDEP Disposal Human Waste as waste ban materials, in accordance with 310 C.M.R. §19.017(3), will not be disposed in landfills. Materials will be recycled to the extent practicable. 5.2 Spill Prevention and Response Instructions (see CGP Parts 2.3 and 7.2.11): — Describe procedures you will use to prevent and respond to leaks, spills, and other releases. You must implement the following at a minimum: ✓ Procedures for expeditiously stopping, containing, and cleaning up spills, leaks, and other releases. Identify the name or title of the employee(s) responsible for detection and response of spills or leaks; and ✓ Procedures for notification of appropriate facility personnel, emergency response agencies, and regulatory agencies where a leak,spill, or other release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity consistent with Part 2.3.3.4c and established under either 40 CFR Part 1 10, 40 CFR Part 117, or 40 CFR Part 302, occurs during a 24-hour period. Contact information must be in locations that are readily accessible and available. — Some projects/site may be required to develop a Spill Prevention Control and Countermeasure (SPCC) plan under a separate regulatory program (40 CFR 112). If you are required to develop an SPCC plan, or you already have one, you should include references to the relevant requirements from your plan. To prevent prohibited non-stormwater discharge the following good housekeeping practices shall be followed during the project: ■ Employees working on the Project shall be trained via bi-weekly tailgate sessions. ■ An effort shall be made to store only enough product required to do the job. ■ All materials stored at the Subject Property shall be stored in a neat, orderly manner in their appropriate containers. EPA SWPPP Template, Version 1.0 27 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 ■ Products shall be kept in their original containers with the original manufacturers label. ■ Substances shall not be mixed with one another unless recommended by the manufacturer. ■ Whenever possible, all of a product shall be used up before disposing of the container. ■ Manufacturer's recommendations for proper use and disposal shall be followed. ■ Spills shall be cleaned up upon discovery. Spent adsorbent materials and rags shall be disposed off-site after spill is cleaned up. Safety data sheets (SDS), a material inventory, and emergency contact information shall be maintained at the site. A spill containment kit will be kept on-site in the operator's trailer/construction vehicle and/or at designated staging area(s) throughout the duration of construction. The operator will perform initial response to any spills or accidental releases of oil or hazardous material (OHM) that occur in the work area to stop, contain and/or cleanup the release. All spills, leaks, or releases shall immediately be reported to the project Superintendent. The Project Superintendent will then notify other operator management. Should there be an accidental release of oil, hydraulic fluid, gasoline or other pollutants, the Fire Department shall be notified immediately. MassDEP shall be notified if greater than 10 gallons of petroleum products are released. All pollutants must be cleaned up and disposed/recycled off- site in accordance with state and federal regulations. During and after work on this project, there shall be no discharge or spillage of fuel, or other pollutants into any wetland resource area. If there is a spill or discharge of any pollutant during any phase of construction the NACC shall be notified by the applicant within one (1) business day. No construction vehicles are to be stored within 100 feet of wetland resource areas, and no vehicle refueling, equipment lubrication, or maintenance is to be done within 100 feet of a resource area. s.3 Fueling and Maintenance of Equipment or Vehicles Instructions (see CGP Parts 2.3.3.1 and 7.2.11): — Describe equipment/vehicle fueling and maintenance practices that will be implemented to eliminate the discharge of spilled or leaked chemicals (e.g., providing secondary containment (examples: spill berms, decks, spill containment pallets) and cover where appropriate, and/or having spill kits readily available. — Also, see EPA's Vehicle Maintenance and Washing Areas BMP Fact Sheet at www.epa.govZnpdes/stormwater/menuofbmps/construction/vehicile v/npdes/stormwater/menuofbmps/construction/vehicile maintain General ■ Vehicle fueling and minor equipment maintenance will only occur in the staging areas, as needed, to ensure proper equipment operation. Several types of vehicles and equipment may be used on-site throughout the Project (i.e., excavators, ladders, rollers, trucks and trailers, and EPA SWPPP Template, Version 1.0 28 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 backhoes). All major equipment/vehicle maintenance will be performed off site. All equipment fluids generated from maintenance activities will be transported offsite immediately for appropriate disposal. Absorbent spill cleanup materials and spill kits will be available on-site. Drip pans will be placed by the operator under equipment receiving maintenance. Specific Pollution Prevention Practices Pollution Prevention Practices Description ■ The Operator will provide an effective means of eliminating the discharge of spilled or leaked chemicals, including fuel, from the area where these activities will take place in compliance with CGP Part 2.3.1. ■ The Operator will provide an effective means of minimizing the discharge of pollutants from equipment and vehicle washing,wheel wash water,and other types of wash waters,ensure there is no discharge of soaps, solvents, or detergents in equipment and vehicle wash water, and for storage of soaps, detergents, or solvents a cover will be provided to minimize the exposure of these detergents to precipitation and to stormwater, or a similarly effective means designed to minimize the discharge of pollutants from these areas in compliance with CGP Part 2.3.2. Installation ■ During construction, no liquid or solid wastes or fuels will be deposited on the ground or into water bodies. When emergency equipment servicing requires the drainage or pumping of lubricating oils or other fluids from the equipment, a groundsheet of suitable material and size should be spread on the ground to catch the fluid in the event of a leak or spill. An adequate supply of suitable absorbent material and any other supplies and equipment necessary to immediately clean-up inadvertent waste or fuel spills must also be available. The Operator will have available at all locations where work is taking place: a spill kit containing a covered 55-gallon drum (or appropriate sized container for the on-site equipment), a supply of an oil absorbent solid such as speedy-dri, oil-dry or other similar material, a shovel and a yard brush, along with absorbent pads, pillows or sausages. Mobile heavy diesel equipment and fuel transfer vehicles will have at minimum a supply of absorbent pads and a five-gallon bucket. ■ All equipment and vehicle fueling and maintenance will generally be performed on site via fuel trucks on-site on an as-needed basis. The fuel transfer operation shall be conducted by a contractor knowledgeable of the location and use of the project area spill kit. Construction personnel responsible for the handling of large quantities of fuel will be familiar with the procedures outlined in this document. Maintenance Requirements ■ Should the spill kit be used,the contractor will replenish the spill kit. The SWPPP inspector will inspect the spill kit monthly to ensure the kit is fully equipped and the supplies are in good condition. ■ Refueling and maintenance will be noted for compliance if observed during normal SWPPP inspected. ■ During and after work on this project, there shall be no discharge or spillage of fuel, or other pollutants into any wetland resource area. If there is a spill or discharge of any pollutant during any phase of construction the NACC shall be notified by the applicant within one (1) business day. No construction vehicles are to be stored within 100 feet of wetland resource areas, and no vehicle refueling, equipment lubrication, or maintenance is to be done within 100 feet of a resource area. EPA SWPPP Template, Version 1.0 29 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 5.4 Washing of Equipment and Vehicles Instructions (see CGP Parts 2.3.3.2 and 7.2.11): — Describe equipment/vehicle washing practices that will be used to minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other types of washing (e.g., locating activities away from surface waters and stormwater inlets or conveyances and directing wash waters to a sediment basin or sediment trap, using filtration devices, such as filter bags or sand filters, or using other similarly effective controls). — Describe how you will prevent the discharge of soaps, detergents, or solvents by providing either (1) cover (examples:plastic sheeting or temporary roofs) to prevent these detergents from coming into contact with rainwater, or (2) a similarly effective means designed to prevent the discharge of pollutants from these areas. — Also, see EPA's Vehicle Maintenance and Washing Areas BMP Fact Sheet at www.epa.clov/npdes/stormwater/menuofbmps/construction/vehicile maintain General ■ Machines will not be washed on site. Specific Pollution Prevention Practices Pollution Prevention Practice # 1 Description ■ Machines will not be washed on site. Installation ■ N/A Maintenance Requirements ■ N/A 5.5 Storage, Handling, and Disposal of Construction Products, Materials, and Wastes Instructions (see CGP Parts 2.3.3.3 and 7.2.11): — For any of the types of construction products, materials, and wastes below in Sections 5.5.1-5.5.6 below that are expected to be used or stored at your site, provide the information on how you will comply with the corresponding CGP provision and the specific practices that will be employed. — Also, see EPA's General Construction Site Waste Management BMP Fact Sheet at www.epa.govZnpdes/stormwater/menuofbmps/construction/cons v/npdes/stormwater/menuofbmps/construction/cons wasteman 5.5.1 Building Products (Note: Examples include asphalt sealants, copper flashing, roofing materials, adhesives, concrete admixtures.) EPA SWPPP Template, Version 1.0 30 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 General ■ Building materials will be brought on site as needed and shall be stored in a manner to minimize discharge of pollutants from these areas. All materials will be stored within designated staging areas or at the point of use and shall be stored in a manner to minimize discharge of pollutants. All construction products, materials, and wastes will be disposed of legally. The project will comply with Part 2.3.3 of the CGP by managing the following anticipated construction materials and waste on-site. Specific Pollution Prevention Practices Pollution Prevention Practice # 1 Description ■ Dumpsters Installation ■ General construction waste materials will be collected and stored in metal dumpsters provided by a licensed solid waste management company or other suitable arrangement at the designated laydown areas. In compliance with Section 2.3.3.e of the CGP, the dumpster will be either covered with plastic sheeting or secondary containment of area around dumpsters to minimize discharge of pollutants. If plastic tarps are placed over dumpsters, they will be replaced at the end of each work day. Note that EPA considers secondary containment structures such as plastic spill berms or plastic sheeting appropriate for underlining of dumpsters. When filled, the dumpsters will be covered and then hauled offsite to an approved landfill. Maintenance Requirements ■ Personnel will be instructed as to proper disposal procedures, notices will be posted where needed, and individuals will be designated to assure that the procedures are followed. Observation of waste management will be part of the normal SWPPP inspection. 5.5.2 Pesticides, Herbicides, Insecticides, Fertilizers, and Landscape Materials General ■ No pesticides, herbicides, insecticides, fertilizers, and hazardous landscape materials are anticipated to be used during construction. If fertilizers are found to be needed to ensure success of permanent vegetative stabilization, they will be stored off-site or contained in a manner compliant with 2.3.5 of the CGP. Fertilizers will be applied at appropriate times of year, when heavy rains are not immediately forecast, and not in frozen ground conditions. ■ fdasfasd Fertilizers utilized for landscaping and lawn care shall be slow release, low-nitrogen types (<5%), and shall not be used within 25 feet of a resource area. If pesticides and herbicides are used, they shall not be used within 100 feet of a wetland resource area unless approved under Special Condition #77. This condition shall run with the title of the property. This condition is issued under the authority of the Town's Wetland Protection Bylaw and shall remain in perpetuity. 5.5.3 Diesel Fuel, Oil, Hydraulic Fluids, Other Petroleum Products, and Other Chemicals General ■ Several types of vehicles and equipment will be used on-site throughout the project (i.e., excavators, loaders, rollers, trucks and trailers, and backhoes). Major equipment/vehicle maintenance shall not be performed on-site. When vehicle fueling must occur on-site, the EPA SWPPP Template, Version 1.0 31 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 fueling activity shall occur as far from wetland areas and stormwater conveyance channels as practicably possible. ■ If minor equipment maintenance is required during the project, all equipment fluids generated from maintenance activities shall be taken off-site immediately for appropriate disposal. Absorbent spill cleanup materials and drip pans shall be available. The spill kit and drip pans shall be brought on site prior to the start of work, and will remain on site until the end of construction. Drip pans shall be placed by the operator under all equipment receiving maintenance. The operator shall arrange for the disposal of waste fluids at an appropriate facility. 5.5.4 Hazardous or Toxic Waste (Note: Examples include paints, solvents, petroleum-based products,wood preservatives, additives, curing compounds, acids.) General ■ No Hazardous or Toxic Waste will be used during construction or on completion of construction. ■ The use of coal tar-based pavement sealants is prohibited on the property, as they have been determined to contribute high levels of polycyclic aromatic hydrocarbons (PAHs) to stormwater runoff. This condition shall survive the Order of Conditions and shall run with the title of the property. 5.5.5 Construction and Domestic Waste (Note: Examples include packaging materials, scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics, styrofoam, concrete, and other trash or building materials.) General ■ Construction and domestic waste will be stored in covered dumpsters and waste is not exposed to the stormwater. Construction and Domestic Waste will be properly disposed of during and after construction. Specific Pollution Prevention Practices Pollution Prevention Practice # 1 Description ■ Construction and domestic waste will be stored in covered dumpsters and waste is not exposed to the stormwater. Construction and Domestic Waste will be properly disposed of during and after construction. Installation ■ Duration of construction. Maintenance Requirements ■ Check for holes and leaks in dumpsters. Dumpsters will be either covered with plastic sheeting or secondary containment of area around dumpsters to minimize discharge of pollutants -this plastic sheeting will be inspected for holes and tears. If plastic tarps are placed over dumpsters, they will be replaced at the end of each work day. ■ Personnel will be instructed as to proper disposal procedures, notices will be posted where needed, and individuals will be designated to assure that the procedures are followed. Observation of waste management will be part of the normal SWPPP inspection. EPA SWPPP Template, Version 1.0 32 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 5.5.6 Sanitary Waste General ■ Temporary sanitary facilities (portable toilets) will be located within the project staging areas. The toilets will be located away from a concentrated flow path and traffic flow, and will have collection plans underneath as secondary containment. All sanitary waste shall be collected from an approved party at a minimum of once per week. Specific Pollution Prevention Practices Pollution Prevention Practice # 1 Description ■ Sanitary Waste Management (Port-a-johns) Installation ■ Port-a-john facilities will be put on-site during construction and will be installed prior to major site work. Maintenance Requirements ■ A sanitary service company will clean and maintain the port-a-john facilities on a routine basis. The SWPPP inspector will notify the Operator of any unacceptable conditions. [Repeat as needed.] 5.6 Washing of Applicators and Containers used for Paint, Concrete or Other Materials Instructions (see CGP Parts 2.3.3.4 and 7.2.11): — Describe how you will comply with the CGP Part 2.3.3.4 requirement to "provide an effective means of eliminating the discharge of water from the washout and cleanout of stucco, paint, concrete, form release oils, curing compounds, and other construction materials." — Also, see EPA's Concrete Washout BMP Fact Sheet at www.epa.gov/npdes/stormwater/menuofbmps/construction/concrete wash General ■ Use proper measures to contain washout water. Specific Pollution Prevention Practices Pollution Prevention Practice # 1 Description ■ Concrete Truck Chute and Tool Washout Containment Area Installation EPA SWPPP Template, Version 1.0 33 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 ■ Concrete washout water (or washwater) is a slurry containing toxic metals. It's also caustic and corrosive, having a pH near 12. The best management practice objectives for concrete washout are to (a) collect and retain all the concrete washout water and solids in leak proof containers, so that this caustic material does not reach the soil surface and then migrate to surface waters or into the ground water, and (b) recycle 100 percent of the collected concrete washout water and solids. Different types of washout containers are available for collecting, retaining, and recycling the washwater and solids from washing down mixed truck chutes and pump truck hoppers at construction sites. The contractor will employ a containment area for washing concrete tools and chutes of concrete trucks. The following are acceptable methods: concrete washout filter; chute washout box;straw bale and plastic washout pit; chute washout bucket and pump;vinyl or metal washout container. Another washout means must be approved by the SWPPP inspector. Dried- concrete will be stored within perimeter controls until it can be removed from the site appropriately. Maintenance Requirements ■ Any leakage or other failure of the washout containment areas will require repair or replacement. The SWPPP inspector will note this as part of regular site visits. 5.7 Fertilizers Instructions (CGP Parts 2.3.5 and 7.2.11): Describe how you will comply with the CGP Part 2.3.5 requirement to "minimize discharges of fertilizers containing nitrogen or phosphorus" To prevent Fertilizers from eroding into surrounding water bodies, perimeter controls have been proposed. This project will consist of the installation of perimeter Silt Fence and Compost Filter Tubes, Compost Filter Tube Berms, and Construction Fence to prevent any soil or fertilizer runoff onto Osgood Street, on-site wetlands, existing parking areas, or surrounding landscape that shall not be disturbed.The perimeter controls will prevent sediment laden storm runoff from leaving the construction site or disturbed area. Specific Perimeter Controls Perimeter Control # 1 Perimeter Control Description ■ The Silt Fence shall have a minimum height of 18 inches and will be installed with a compost filter tube berm in wetland sensitive areas. The Silt Fence shall be constructed as a first step in any land-disturbing activity and shall be made functional before upslope land disturbance takes place. ■ Design specifications and details are included within Appendix A-Site Maps. Installation ■ The Silt Fence shall been installed shall be removed after temporary measures are no longer needed, unless otherwise requested. The construction fence shall remain during the lifespan of the project. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation. EPA SWPPP Template, Version 1.0 34 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Maintenance Requirements ■ Periodic inspections are required and must be conducted after each rain event. Maintenance shall consist of inspection and removal of accumulated sediment before it has accumulated to 25%of the above-ground height of any perimeter control. Perimeter Control #2 Perimeter Control Description ■ The Compost Filter Tube (Berm) will be installed against the upslope side of the Silt Fence. Compost Filter Tube shall have a minimum diameter of 12" (18" min. for berm) when installed and shall have firm contact with ground to prevent flow underneath. The compost filter tube shall be installed along with the silt fence as a first step in any land-disturbing activity and shall be made functional before upslope disturbance takes place. ■ Design specifications and details are included within Appendix A-Site Maps. Installation ■ The Compost Filter Tube installed shall be removed after temporary measures are no longer needed, unless otherwise requested. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation. Maintenance Requirements ■ Periodic inspections are required and must be conducted after each rain event. Maintenance shall consist of inspection and removal of accumulated sediment before it has accumulated to 25%of the above-ground height of any perimeter control. 5.8 Other Pollution Prevention Practices Instructions: Describe any additional pollution prevention practices that do not fit into the above categories. General ■ No other pollution prevention practices, other than those described above,will be installed at the site. SECTION 6: INSPECTION AND CORRECTIVE ACTION 6.1 Inspection Personnel and Procedures Instructions (see CGP Parts 2.1.1.4, 2.3.2, 3.3.2,4, 5, and 7.2.12): Describe the procedures you will follow for conducting inspections in accordance with CGP Parts 2.1.1.4, 2.3.2, 3.3.2, 4, 5, and 7.2.12. EPA SWPPP Template, Version 1.0 35 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Personnel Responsible for Inspections TBD Note: All personnel conducting inspections must be considered a "qualified person." CGP Part 4.1.1 clarifies that a "qualified person" is a person knowledgeable in the principles and practices of erosion and sediment controls and pollution prevention,who possesses the skills to assess conditions at the construction site that could impact stormwater quality, and the skills to assess the effectiveness of any stormwater controls selected and installed to meet the requirements of this permit. During the site inspection, the Operator must at a minimum inspect and report on the following areas of the site: • All areas that have been cleared, graded, or excavated and where site restoration has not yet occurred; • All stormwater controls (including pollution prevention measures) installed at the site to comply with the CGP; • Material, waste, borrow, or equipment storage and maintenance areas that are covered by the CGP; • All areas where stormwater typically flows within the site, including drainage ways designed to divert, convey, and/or treat stormwater; • All points of discharge from the site; • Entrance and exit points; and • All locations where stabilization measures have been implemented. The Operator is not required to inspect areas that, at the time of the inspection, are considered unsafe to the inspection personnel. Inspection Schedule Specific Inspection Frequency SWPPP inspections will occur at least once every seven (7) calendar days OR once every fourteen (14) calendar days and within 24 hours of the occurrence of a storm event 0.25 inches or greater, or the occurrence of runoff from snowmelt sufficient to cause a discharge (CGP Part 4.2); Rain Gauge Location (if applicable) https://www.wunderground.com/dashboard/pws/KMABUZZA23?cm_ven=localwx_pwsdash Reductions in Inspection Frequency (if applicable) ■ For the reduction in inspections resulting from stabilization: When stabilization has been completed, locations of such stabilization will be specified and the date the stabilization was completed will be noted. ■ For the reduction in inspections in arid, semi-arid, or drought-stricken areas: No arid or drought stricken weather is anticipated. In the chance of such weather conditions, the inspector will make determinations as appropriate relative to reductions in inspections based on metrological and historical data and real time weather conditions. EPA SWPPP Template, Version 1.0 36 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 ■ For reduction in inspections due to frozen conditions: If construction activities are to be suspended due to frozen conditions, on-site inspections will be suspended until thawing conditions begin to occur if: o Runoff is unlikely due to continuous frozen conditions that are likely to continue at the site for at least three (3) months based on historic seasonal averages. If unexpected weather conditions (such as above freezing tempoeratures or rain events) make discharges likely, regular inspection frequency must resume immediately; o Land disturbances have been suspended; and o All disturbed areas of the site have been stabilized in accordance with Part 2.2.14a of the CGP. Inspection Report Forms Inspection report forms are located in Appendix D. EPA SWPPP Template, Version 1.0 37 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 6.2 Corrective Action Instructions (CGP Parts 5 and 7.2.12): — Describe the procedures for taking corrective action in compliance with CGP Part 5. Personnel Responsible for Corrective Actions TBD Following inspections, the Operator must identify location(s) of BMPs that failed to operate as designed or proved inadequate for a location;location(s) where additional BMPs are needed that did not exist at the time of inspection; and corrective action required including any changes to the SWPPP necessary and implementation dates. The inspection reports must identify any incidents of non-compliance with the Construction General Permit conditions. When the problem does not require a new or replacement control or significant repair, the corrective action must be completed by the close of the next business day. When the corrective action requires a new or replacement control or a significant repair, the corrective action must be addressed within 7 calendar days from the time of discovery. If it is infeasible to complete the installation or repair within 7 calendar days, documentation in the SWPPP shall be included noting why it is infeasible and the schedule for installing the corrective action noted. Where these actions result in changes to any of the stormwater controls or procedures documented in the SWPPP, the SWPPP must be modified accordingly within seven (7) calendar days of completing this work. Corrective actions need to be documented in a report within 24 hours of identifying the corrective action condition. The corrective action report should include the corrective action condition and the date and time it was identified. Also,within 24 hours of completing the corrective action, the actions taken to address the condition, including whether any SWPPP modifications are required should be documented. Each corrective action report should be signed in accordance with Appendix I, Part 1.11 of the CGP. A copy of all corrective action reports should be kept at the site or an easily accessible location, so that it can be made available at the time of an on-site inspection or upon request by EPA. All corrective action reports completed in compliance with the CGP must be retained for at least three (3) years from the date permit coverage expires or is terminated. 6.3 Delegation of Authority EPA SWPPP Template, Version 1.0 38 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Instructions: — Identify the individual(s) or positions within the company who have been delegated authority to sign inspection reports. — Attach a copy of the signed delegation of authority (see example in Appendix J of the Template. — For more on this topic, see Appendix I, Subsection 1 1 of EPA's CGP. Duly Authorized Representative(s) or Position(s): TBD I, hereby designate the person or specifically described position below to be a duly authorized representative for overseeing compliance with environmental requirements, including the Construction General Permit, at the following construction site: Proposed Redevelopment 1600 Osgood Street. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. [INSERT NAME AND CONTACT INFO] By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in Appendix I of EPA's Construction General Permit (CGP), and that the designee above meets the definition of a "duly authorized representative" as set forth in Appendix I. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Company: Title: Signature: Date: EPA SWPPP Template, Version 1.0 39 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 SECTION 7: TRAINING Documentation that personnel required to be trained in accordance with CGP Part 6 will be maintained. These personnel consist of the stormwater team,which includes, at a minimum: ■ Personnel responsible for the design, installation, maintenance, and/or repair of stormwater controls; ■ Personnel who are responsible for conducting inspections; and ■ Personnel who are responsible for taking corrective actions. Training will be given based on job duties and will include an understanding of the following: ■ The permit deadlines associated with installation, maintenance, and removal of stormwater controls and stabilization; ■ The location of all stormwater controls on the site required by the permit and how they are to be maintained; ■ The proper procedures to follow with respect to the permit's pollutions prevention requirements; and ■ When and how to conduct inspections, record applicable findings, and take corrective actions. Table 7-1: Documentation for Completion of Training Name Date Training Completed SECTION 8: CERTIFICATION AND NOTIFICATION Instructions (CGP Appendix I, Part 1.1 Lb): — The following certification statement must be signed and dated by a person who meets the requirements of Appendix I, Part 1.1 l.b. — This certification must be re-signed in the event of a SWPPP Modification. EPA SWPPP Template, Version 1.0 40 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Nathan L. Kirschner Title: Senior Project Manager Signature: Date: EPA SWPPP Template, Version 1.0 41 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 SWPPP APPENDICES Attach the following documentation to the SWPPP: Appendix A-Site Maps Appendix B-Copy of 2017 CGP (Note: The 2017 CGP is available at https://www.epa.aov/npdes/epas-2017-construction- aeneral-permit-cqp-and-related-documents) Appendix C-NOI and EPA Authorization Email Appendix D-Inspection Form (Note: EPA has developed a sample inspection form that CGP operators can use. The form is available at https://www.epa.aov/npdes/stormwater-discharges-construction- activities#resources) Appendix E-Corrective Action Form (Note: EPA has developed a sample corrective action form that CGP operators can use. The form is available at https://www.epa.aov/npdes/stormwater-discharges-construction- activities#resources) Appendix F-SWPPP Amendment Log Appendix G-Subcontractor Certifications/Agreements Appendix H-Grading and Stabilization Activities Log Appendix I-Training Log Appendix J-Delegation of Authority Appendix K-Endangered Species Documentation Appendix L-Historic Preservation Documentation EPA SWPPP Template, Version 1.0 42 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix A-Site Maps EPA SWPPP Template, Version 2.1 1 2 3 4 5 6 7 8 Q 2 LEGEND n \ \\ SYMBOL KEY TITLE ® IP INLET PROTECTION l \�' RIP-RAP OUTLET PROTECTION CONSTRUCTION ENTRANCE \ \ FR FIBER ROLL \ ( LD LIMIT OF DISTURBANCE \ \...,\'..� \............. CD CHECK DAM SEDIMENT BASIN RAIN GARDEN ems, e � _ SR\� O SURFACE ROUGHENING Q O \ OSGOOD STREET \ y" .. 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S S^ � 200 TRAILER SPACES £�...... \ t =109.86 AC1 ~ - LANGAN Langan Engineering and Environmental Services,Inc. 555 L Wharf Drive .............. v e� � Ha T Long \I New v 06511 s , \\e en C -. ..........: -- ...._.. T:203.562.5771 F:203.789.6142 www.langan.com ... a � w r t 41 4 Pro'ec € �\ �' 1600 OSGOOD STREET °e ° E NORTH ANDOVER MASSACHUSETTS 1\ _ Drawing Title \ SOIL EROSION & / SEDIMENT CONTROL PLAN Project No. Drawing No. 140182701 ate / 07/2412019 CE100 150 0 5D 1DO 150 raven By D F e...._. IRIS SCALE IN FEET Checked By - NLK Sheet 73 of 104 Filename:\\langan.c.,ldato\NH\data7\1401827011pl ject tlata\CAD\01\sheetfileslClvil1140182701-CE101-0101.d g Dale:MW2019 Ti—:17'43 User cmclean Style Table:Langan.stb Layout CE100 1 2 3 4 5 6 7 8 Q \ \ �PROPERTY LINE(TYP) �` V \ w1 L \ \ \ T'OSGOTD STREET ` \ LEGEND SE SETBACK(TYP) Y '^� _ -A A \\ � � \ Fob ,. .� I �' � SYMBOL KEY TITLE INLET PROTECTION RIP-RAP OUTLET \ \ FR \ > PROTECTION CONSTRUCTION \ \ \ \ ( ENTRANCE \ \ \ FR FIBER ROLL ti LIMIT OF DISTURBANCE \ \ FR S • \ \ � CD CHECK DAM SEDIMENT BASIN RAIN GARDEN �^ \ LD g SURFACE ROUGHENING O \: PS PERMANENT SEEDING Z BLu 1 ' " rrvvvv-y-ram EDGE OF TREE LINE \ \ TREE FR � � PROTECTION d a �—o O FENCING \' \ WETLAND LIMITS \ \ \ \ $ 25'NO DISTURB BUFFER 50 NO BUILD BUFFER. V A \ \\ BUFFER SHEET LEGEND FR \ \ $� \� FIBER ROLL (TYP) ; I CE101 I CE103 I CE106 c �,.• \ \ �F+ CE102 CE104 I CE107 1>0 ,.�\ $ \` I CE105 I CE108 \ -- -- Date Description No. REVISIONS \ 00 � \ \ �2''\ \ FR � � •.� } FR \ $\, z A" \\� 0 � D • \ �\ , �00 '� \ � \ pp, 100'BUFFER AREA � ! LANGAN J=h/�O \ \ a• / I I 50•NO BUILD BUFFER\ I j Langan Engineering and Environmental Services,Inc. 25'NO DISTURB BUFFER 555 Long Wharf Drive WETLAND LIMITS } _; New Haven,CT 06511 I T:203.562.5771 F:203.789.6142 www.langan.com \ \FR O I o FR I I LD Project ect �i E 007 50 FT SIDE 1600 OSGOOD STREET BUILDING \ SETBACK E LIMIT OF �$ 7•\ \ \ DISTURBANCE (TYP) �. LD \ \_ NORTH ANDOVER MASSACHUSETTS d \ PROPERTY LINE , •\ I I ) Drawing Title i• `. CEROSION APPROXIMATEP (TYP) I SOIL 200 FT RIVERFRONT \ \ - j , -------- FIBER RILL \ j I`�3 SEDIMENT (TYP) CONTROL PLAN c$ FR \ \ \ I Project No. Drawing No. v v \ 140182701 it Date MATCHLINE:a101 \ \ 07/24n019 C E 1 01 MATCtILINE•CE702AN Drawn By F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NLK Sheet 74 of 104 Filename-\\langan..\tlalalNH\data A140182701\p,ojeotdala\CAD\01\sheetflee\Civil\140182701-CE101-0101.dlg Date'7/19/2019 Tme-17'43 User'cmclean Sryle Tabl,Lanp-tb Laput'CE101� 1 2 3 4 5 6 7 8 Q MATCHLiNE:CE101 MATCHLINE:CE102 ` �� 3O\ ( —"NNW--� \ \ \ \ z °r LEGEND \ a A \roa \ I I SYMBOL KEY TITLE \ \ INLET PROTECTION \ RIP-RAP OUTLET \ \ RR ? PROTECTION \ ub \ \ I CE CONSTRUCTION ENTRANCE L\ \ \. I I FR FIBER ROLL \ \ \ I 4 I `� LD LIMIT OF DISTURBANCE \ \ I I I \ \\ \= CD CHECK DAM s = SB SEDIMENT BASIN N FR \ 1 RAIN GARDEN \ \ \\ \ \ IP I I SR SURFACE ROUGHENING B I E PS PERMANENT SEEDING \ �\ I W EDGE OF TREE LINE { / TREE PROTECTION d FENCING Li SHEET LEGEND \ \ � CE101 I CE103 I CE106 I C \ ''.\ .\. \. I I I CE102 I CE104 I I \ OD I is I CE105 I CE108 I u \ FR I \LD Date Description No. 50 FT SIDE \ '1 REVISIONS \ BUILDING \ O SETBACK � ' LIMIT OF \ DISTURBANCE r t (TYP) D \ ^ F FIBER ROLL \ ` (TYP) , s PROPERTY LINE (TYP) �p+ LD\ r=. LANGAI \ Langan Engineering and APPROXIMATE \ vF °� M Environmental Services,Inc. 200 FT RIVERFRONT ��\� \ FIBER ROLL (TYP) IIHI. 555 Long Wharf Drive New Haven,CT 06511 'O 1 T:203.562.5771 F:203.789.6142 www.langan.com / I� wok Project t 1600 OSGOOD STREET \; LD I E `l NORTH ANDOVER MASSACHUSETTS \ \ ix Drawing Title \ � SOIL EROSION & z SEDIMENT \ \ CONTROL PLAN II Project No. Drawing No. \ \ 140182701 Date \ 0 7/2 412 01 9 C E 1 02 \ Drawn By F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NLK Sheet 75 of 104 Filename=\\Iangan.comltlatalNH\tlata]\140182]011projec(tlala\CAD\01\shee lee\Civi11140182]01-CE101-0101.tlwg Date=MW2019 Time=1]'43 User.cmd—Style Table=Langan.stb Layout CE102 2 3 4 5 6 7 LEGEND A SYMBOL KEY TITLE ............. CONSTRUCTION ENTRANCE WITH WASHRACK. AITIER TO BE SUPPLIED BY WATER TRUCK. INLET PROTECTION RR RIP-RAP OUTLET ................ PROTECTION CONSTRUCTION ENTRANCE ......... FIBER ROLL LIMIT OF LIMIT OF DISTURBANCE DISTURBANCE (TYP) PROPERTY CHECK DAM SEDIMENT BASIN 7 (70 Gb IP RAIN GARDEN SURFACE ROUGHENING z PERMANENT SEEDING L. L70 00 OO 00 UO 7—�00 f-f-y-y-y-y-y-r" 0 EDGE OF TREE LINE S14 I Kitt rKLJ ItIL I 1UN V FENCING 171 ----------- SHEET LEGEND X X I n r T T X CE101 CE103 CE106 .... ..................% ........ % % H .....------- C % CE10 2 CE104 CE107 CE105 CE108 7. IP IP IP L J —J Al YW tp Description Date No. z REVISIONS IP IP 1P IP m 7 (707-007 (707-007-007-007-007-007-007-007-007—007-00' 007-007-00y' IP g" D IP gO J 4 LANGAN 15 C1 Langan Engineering and z Environmental Services,Inc. 555 Long harf 1 Q, New Haven,W CT 06Drive511 ......... 77� T.203.562.5771 F.203.789.6142 www.langan.com 00 ......... Project V -A :...................................... .............. ............... .................... \......... 1600 OSGOOD STREET E 7IP NORTH ANDOVER MASSACHUSETTS Drawing Title IP ............ m SOIL EROSION & RR G SEDIMENT .......... W� W7— Id I IP IP CONTROL PLAN III P ............ IP IP L El ....... Project No. Drawing No. IF 140182701 l ip Date MA f ) 07/2412019 Z Z�� v U 11 MATCHLINE:aiO4 F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NLK Sheet 76 of 104 F11,13m,\\langal.c.,ldato\NH\dat@7\1401827011plj,ctdata\CAD\Ol\sil,,tfilslCivil1140182701-CE101-010i.dg Dat,7f19f2019 T—1744 U-0—ban Slyl,Tabl,La,ga,.stb Layout CE103 2 3 4 5 6 7 �J -, 9 MATCHLINE:CE104 ig RG RG IP R RG q� (@ IP IP 1131, J SEDIMENTIP LEGEND RR 1 BAS 7 C: W "N SYMBOL KEY TITLE ZZ� JV R IP INLET PROTECTION RR RIP-RAP OUTLET �\.......... PROTECTION N CONSTRUCTION A IlL ENTRANCE A, 7, FIBER ROLL a LD X, LIMIT OF DISTURBANCE 0 CD CHECK DAM ® O ® SBSEDIMENT BASIN ......... RAIN GARDEN '4, RR SURFACE ROUGHENING E RG PERMANENT SEEDING z G, RG RG ------------r— B �I - AL A AL TL EDGE OF TREE LINE f_f_y_y_y_y_y_r1 3 Pr TREE PROTECTION J� 1, FENCING .........."','1 % 4 IP 4 Irl x al, SHEET LEGEND 7:1 n g, 3", 01111111111111111............. IP CE1 01 CE103 CE1 06 & .............. ..............1 C CE1 04 CE107 ...................------- CE1 02 E /011 -A" A 0 . .................... CE105 CE108 0 z! .......\ L _J El ................, Ir Description Rr Date No. 'k ....... ....... REVISIONS 'R R"I", ....... ........... ... ....... ........... ......................--- ........ ........................,........................�,,,...................... 0 101 D --————————————--———————————- ———--------- i10 it 'N" 7, - -—-------\,....... A � . LA NGAN Langan Engineering and Environmental Services,Inc. RR 555 Long Wharf Drive .................................................... New Haven,CT 06511 T................ IGO: T:203.562.5771 F:203.789.6142 www.langan.com Project ................. H lu 1ro "A. z H! X_ 1600 OSGOOD STREET X. W", E I k LIMIT X,\x .............. NORTH ANDOVER MASSACHUSETTS DIFBANCE Vx (T Oil ' _ _ Drawing Title .............I FIBER�ROLL (TYP) ..........I ——----- -,\0K SOIL EROSION & LJ ll 50 F ———————.......—————————------————————————————— T S\ID ............. ——---------------------------- au W xxx, SETBACK ll SEDIMENT BUILDING Y PROPERTY LIN\E ............ (TYP) NX �gmji CONTROL PLAN IV oN ......... Project NO. Drawing No. 1W v 140182701 \ /\ ;` _ Oy �y :`�......... �� ••"a' -_ ....... Date RG <1zCIP >\ .................. ....................................... \......... 0 ' h"TCHLINE:CE104 07/2412019 o Drawn B CE1 04y N IIJINI Ax III\W7\ 99 MATCH LINE F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NLK Sheet 77 of 104 Date MW2019 Ti—1744 U—.1—Style Table:L-g—itb Layout CE104 1 2 3 4 5 6 7 8 Z fNATC&iLINE:tE104 2 „ ... .. ...... � ........................................................................................................................................................ MA LINE. 105`: � •<a RR _ Ip LEGEND . O V ASYMBOL KEY TITLE \ ... i �.. .......:....................... . :. :: ;. INLET PROTECTION RR RI ET PROTECTION 1 , a _.. CONSTRUCTION 1 CE ENTRANCE o FIBER ROLL LD LIMIT OF DISTURBANCE O \ 2.....: CD CHECK DAM \ \ . SEDIMENT BASIN � RAIN GARDEN G IP SR SURFACE ROUGHENING IP B � \ - - PS PERMANENT SEEDING EDGE OF TREE LINE rrw wr" \ FR PF O TREE PROTECTION FENCING lk ZONE X SHADED _... IP- YJ E�'AE `�..' \ LD �P �p SHEET LEGEND \ -- -- -- FR : CE101 CE103 CE106 I I I I \ X 07 .. 00 - 00 Q7 00 0 - BONE AE, ZONE X(S DE) CE102 CE104 I CE107 \ J 0 I CE105 I CE108 I 50 FT SIDE BUILDING SETBACK Date Description No. PROPERTY LINE(TYP) REVISIONS/ a , i -, a 100'BUFFER AREA D \ LD / 50'NO BUILD BUFFER 25'NO DISTURB BUFFER \ WETLAND LIMITS LANGAI 8/ \ \ I Langan Engineering and Environmental Services,Inc. 555 Long Wharf Drive New Haven,CT 06511 APPROXIMATE T:203.562.5771 F:203.789.6142 www.langan.com 200 FT RIVERFRONT Project \ °FR \ FIBER ROLL \(TYP) 1600 OSGOOD STREET l LIMIT OF \ \ DISTURBANCE \ E (TYP) \ p S� / \ NORTH ANDOVER MASSACHUSETTS Drawing Title \ p 50 FT REAR / \ SOIL EROSION & • � BUILDING SETBACK SEDIMENT CONTROL PLAN V OD Project No. Drawing No. ! DD L .� 140182701 �b OD Date 0 7/2 412 01 9 Ob LD\ __�_.._�....... uu 0D GO Drawn By F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NU( Sheet 78 of 104 Fltename-\\langan.comldata\NH\data7\1401827011p,.jecttlata\CAD\01\sheetfileslCivil1140182701-CE101-0101.d g Dale-7/19/2019 Tme'17:44 User aban Slyle Table Langan.slb Layou1'CE105 1 2 3 4 5 6 7 8 Q 2 LEGEND A SYMBOL KEY TITLE ® IP INLET PROTECTION RR RIP-RAP OUTLET PROTECTION CE CONSTRUCTION ENTRANCE FR FIBER ROLL LD LIMIT OF DISTURBANCE PROPERTY , LINE(TYP) - CD CHECK DAM ' ................................................................................................................................................................................................ ....................................................... ...... ............................................................. .................,....................................................................................................... ................................... 1 ............................................................. .................................. ... ............................................................................................................ ..................................................................................... .. ............................... SB SEDIMENT BASIN O .. CONSTRUCTION ENTRANCE " "-•-.. �G RAIN GARDEN WITH WASHRACK.WATER ^` \ TO BE SUPPLIED BY WATER TRUCK SR SURFACE ROUGHENING O g PS PERMANENT SEEDING W -- �' rrw�rwr" O EDGE OF TREE LINE IP \ S...-" TREE PROTECTION d JP FENCING a -------------- - -- LD z FIBER ROLL Y 0 t i s �— CE 10� �7 SHEET LEGEND _ FR `erg r CE101 CE103 CE106 v 4 .° BUFFER ARE C �\ CE102 CE104 CE107 100 A 0 NO BUILDER ----____e„ `"`" � � 255 N0 DISTURB BUFFER L-- -- -- ------------ T J ...... ... ,. .. ,. r _. S r0 s: _ $�:1 WETLAND LIMITS... ,� _t CE OS CE 08 50 FT REAR I I I I BUILI L J SETBACK c o - \ Date Description No. LD LD REVISIONS : \O LIMIT-OF 0� `'• \ DISTURBANCE... .................... ............... �-� I ::.� CO LD f(TYP) _ .. I. ` ....� 007 007 0107� 007 007 Q 7 007 007 00 r 1P \ / ............................................ -rnz $� , 1A9=, !O©;-, .Lf,1P.........6fJJl1•., !{34 r IP m - Ir/ O IP n..... _........... .... ................ _ . -� g113 , ft1w/ \ \ y. NEAN 1 Langan Engineering and z% 0 RR �� % Environmental Services,Inc. �3�i ��` �•••-• •-• ••� �� \ �,�' .� \ 555 Long Wharf Drive �i a y� t~z � New Haven CT 06511 T:203.562.5771 F:203.789.6142 www.langan.com < flP7f1F}7''.: ':' �fla7 �9� flQ ,a IPIV Project O.. 1 J IP VV x ;.. n- a �. 1 3 1600 OSGOOD STREET )P IP' si�'; feria E _ „g t �n x � - t4s, RG 1!t NORTH ANDOVER MASSACHUSETTS y..`_) Drawing Title D T' R ,v rih SOIL EROSION & so ///If Jfff IP tv O \ s SEDIMENT is ........ .. ai I _ S S L. IP IP:. '� JF, PLAN VI 1 CONTROL OFj 90 Project No. Drawing No. 140182701 i Date TCHLINE:CE106 07/24/2019 -- -- — -- -- CE106 't11 VriA= LINE:CE107 Drawn By F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NU( Sheet 79 of 104 Filename:\\langan.c.,ldato\NH\data7\1401827011projecttlata\CAD\01\sheetfileslCivil1140182701-CE101-0101.d g Dale:7/19/2019 Ti-:17'45 User cmclean Slyle Table Langan.stb Layout CE106 1 2 3 4 5 6 7 8 Z I — T O : � � TC9iLINE:CE106 a s z • LINE a IP' IP i RG E y E ; a IP fP IPiv LEGEND,. n SYMBOL KEY TITLE IP t a � \ . 3 \\ ....... _ IP —IP $ INLET RIP-RAP OUTLET N e RR PROTECTION 5 CONSTRUCTION P , CE ENTRANCE . v' FIBER ROLL - LD LIMIT OF DISTURBANCE _Y o J, z _. n: ® ® T CD CHECK DAM IP e ado '1 SB SEDIMENT BASIN o. kw e �a� RAIN GARDEN IP = _-°o ". IP 4 SR SURFACE ROUGHENING O RG RG \ ~t J PS PERMANENT SEEDING 1 Z B i RG 's ..._........._...,...,....;. \ _ _ `> l '\ rrwvwr" O EDGE OF TREE LINE IP IP a d °e TREE N TP EE PROTECTION _ O FENCING ..... », o:. IP IP Ilk1 a=. i u., oD . SHEET LEGEND IPAt f _ A,, \ w_ _ '_` g .€ 3 CE101 CE103 I CE106 C "� - CE102 CE104 CE107 a ........................ ..._ .......... c' E �t 40 CE105 I CE108 _ ..... ..—.. b L RR F Date Description No. CD 1' REVISIONS w �'s a F _ y N� I a z — d ........... .,.; ..._i a. .. LEI 1 _ .A i ,5 LD D o I t _ I \ c _� s ® .. • d \ LANGAN Langan Engineering and Environmental Services,int. a \ SB !P N H T 06511 New Haven,Long 4 555 Lo Drive T 203.562.5771-=� � � � F.203.789.6142 www.langan.com \ J \ s Project u W i t Z Z F 1600 OSGOOD STREET , i X 100'BUFFER AREA E \ ` s ' 50'NO BUILD BUFFER I 25'NO DISTURB ';�'; \ BUFFER _: 2 XIM WETLAND LIMITS '' NORTH ANDOVER MASSACHUSETTS RI •NT\ Dr wing Title IP 9 1 S & OIL EROSION f J I SEDIMENT F 50'NO BUILD BUFFER CONTROL PLAN VII v 100'BUFFER AREA �- - m s Project No. Drawing No. _ £ ` ' o ate 3 ' ` 140182701 - CE 107 f D MATCHLINE:CE107 07/24/2019 Drawn y MATCHLINE a CE108 — *• -_ � D B F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NLK Sheet 80 of 104 Filename-\\langan.�.,ldato\NH\data7\1401827011p,.j.ctd.ta\CAD\Oi\sheetfileslClvil1140182701-CE101-0101.d g Dale-7/19/2019 Tme'17'45 User—ban Slyle Table Langan.stb Layout CE107 1 2 3 4 5 6 7 8 MATgiLINE'tCE107 MATCHLINE:CE108 3 FIR i 3,3 r �Loo L�--Lo L ..............._........... I <� 40 �� ....................... LD � LEGEND —LOD— A N I LD 7 001 t�1 SYMBOL KEY TITLE g. �.......... p7 INLET PROTECTION I _ _® FR yp, ® IP 00/_ RIP RAP OUTLET NI PROTECTION CONSTRUCTION ®. I ENTRANCE I FR FIBER ROLL �� 42 LD LIMIT OF DISTURBANCE O CD CHECK DAM SEDIMENT BASIN _ N 4 v I RG RAIN GARDEN C SURFACE ROUGHENING \ 50 Z 45 PS PERMANENT SEEDING B m FR ,- qp / rrvvv�v r" O EDGE OF TREE LINE I \ TREE N I \ EE PROTECTION d Pr O �. ....................�..�.............. FENCING ....... �..... .... J t � �, \ IP \� \ SHEET LEGEND _ r T �.� ............... .........._ CE101 I CE103 I CE106 I �.. 7 ._. — ®_�� O�b\ �2°ti . a ® C y ` IP \ ��Ny-1 FR / CE102 I CE104 I CE107 CE105 I CE108 I a LD V V � Date Description No. FR I I REVISIONS LIMIT OF , - I \ \ 3�', �\ LO DISTURBANCE 1 (TYP) /J fi LO 100'BUFFER AREA \ �" = 50 NO BUILD BUFFER / \ \�J. FIBER ROLL p (TYP) $ I Ii 25'NO DISTURB BUFFER s �WETLAND LIMITS D IF \ 100 BUFFER AREA LANGAN Iti� t 50 NO BUILD BUFFER / I A I APPROXIMATE /_ 25'NO DISTURB BUFFER \ \. /- Langan Engineering and 4 200 FT RIVERFRDNT \ Environmental Services,Inc. WETLAND LIMITS � 555 Long Wharf Drive New Haven,CT 06511 50 FT REAR / \� '� T:203.562.5771 F:203.789.6142 www.langan.com BUILDING SETBACK s / _ \\\ Project 1600 OSGOOD STREET NN NI E p� 1 7 L0 �L /I „ �OD�LOD \ NORTH ANDOVER MASSACHUSETTS /. I / l p� \ o' Drawing Title J � a // \\ �yL / FR _ 00 _ SOIL EROSION & p ZONE SNADED� OD ,�+'.:yr` —— SEDIMENT �L �LOD� LOp CONTROL PLAN VIII PROPERTY Project No. Drawing No. LINE(TYP) 140182701 Date - - 07 /24/2019 CE1 08 \ Drawn B Y F 40 0 10 25 40 IRIS Checked By SCALE IN FEET NLK Sheet 81 of 104 Filename-\\langan.c.,ldato\NH\data7\1401827011projecttlata\CAD\01\sheetfileslCivil1140182701-CE101-0101.dlg Date-711 912 01 9 Tme'1745 User—ban Slyle Table Langan.stb Lay-l'CE108 2 3 4 5 6 7 8 42 12"THICK STONE PAD: DOT NO.3 OR ASTM C-33 NO.3 SOIL EROSION-SEDIMENT CONTROL NOTES FILTER FABRIC MIRAFI 60OX OR APPROVED EQUIVALENT 12" PROPOSED DEVELOPMENT 17.THE PROPERTY OWNER AND/OR HIS/HER AGENTS MUST MAINTAIN 1. CONSTRUCTION WILL INCLUDE EARTHWORK,CURBING,PAVING,UTILITY (REPAIR/REPLACE),WHEN NECESSARY,THE SILTATION CONTROL UNTIL ALL C.MULCHING SHALL BE DONE AT THE RATE OF SEVENTY TO NINETY POUNDS INSTALLATION,LANDSCAPING AND BUILDING CONSTRUCTION. ALL DEMOLITION DEVELOPMENT ACTIVITY IS COMPLETED AND ALL DISTURBED AREAS ARE (70-90 LBS)PER 1,000 SQUARE FEET WITH UNROTTED SALT HAY. K\ DEBRIS AND SOIL REMOVAL RELATED TO CONSTRUCTION SHALL BE REMOVED PERMANENTLY STABILIZED. \-/,n/'n/'n/'n/' A D.LIQUID MULCH BINDERS MUST BE USED TO ANCHOR SALT HAY,HAY DR AND DISPOSED OF IN ACCORDANCE WITH APPLICABLE STATE AND LOCAL LAWS 18.ANY LITTER AND/OR TRASH LEFT ON SITE MUST BE PICKED UP AND PROPERLY STRAY MULCHES. GOVERNING SUCH ACTIVITIES. DISPOSED OF AT THE END OF EACH WORK DAY. WELL COMPACTED SUB-GRADE 2.THE DETAILED EROSION AND SEDIMENT CONTROL MEASURES ARE SHOWN ON (i) APPLICATIONS SHOULD BE HEAVIER AT EDGES WHERE WIND CATCHES DRAWINGS CE101.THE PROPOSED MEASURES HAVE BEEN DESIGNED TO 19.SOIL STABILIZATION SHALL BE COMPLETED WITHIN FIVE(5)DAYS OF CLEARING THE MULCH IN VALLEYS AND AT CREATED BANKS.REMAINDER OF PREVENT THE MIGRATION OF SOIL SEDIMENT FROM THE SITE. OR INACTIVITY IN CONSTRUCTION. AREA SHOULD BE UNIFORM IN APPEARANCE. SOIL EROSION AND SEDIMENT CONTROL NOTES 20.THE DEVELOPER SHALL PRACTICE EFFECTIVE DUST CONTROL PER THE SOIL (ii) USE ONE OF THE FOLLOWING:SYNTHETIC OR ORGANIC BINDERS, CONSERVATION SERVICE HANDBOOK DURING CONSTRUCTION AND UNTIL AREAS BINDERS SUCH AS CURASOL DCA-70,PETRO SET,TERRA TACH, 1. THE SOIL AND SEDIMENT CONTROL PRACTICES MUST BE INSTALLED IN ARE STABILIZED OR SURFACE TREATED.THE DEVELOPER SHALL BE HYDRO MULCH AND AEROSPRAY MAY BE USED AT RATES 10'MIN RADIUS ACCORDANCE WITH THE LOCAL GOVERNING AUTHORITY,THE MASSACHUSETTS RESPONSIBLE FOR THE CLEANING OF NEARBY STREETS,AS ORDERED BY THE RECOMMENDED BY THE MANUFACTURER OF ANCHOR MULCH EROSION AND SEDIMENT CONTROL GUIDELINES AND THE MASSACHUSETTS TOWN,OF ANY DEBRIS FROM THESE CONSTRUCTION ACTIVITIES. MATERIALS.BINDERS CONTAINING PETROLEUM PRODUCTS SHALL NOT 1111 MIN R STORMWATER STANDARDS. 21.LAND DISTURBANCE ACTIVITIES INCLUDING DIGGING,GROUND CLEARING,HEAVY BE USED. MOADIUS 2.EROSION AND SEDIMENT CONTROL DEVICES MUST BE INSTALLED PRIOR TO MACHINERY DRIVING AND STAGING IN THE OVERFLOW PARKING AREA SHOULD NOTE:ALL NAMES GIVEN ABOVE ARE REGISTERED TRADE NAMES.THIS START OF DEMOLITION AND CONSTRUCTION AND DISTURBANCE OF SITE BE DONE DURING THE EASTERN BOX TURTLE'S ACTIVE SEASON,WHICH IS 1 DOES NOT CONSTITUTE A RECOMMENDATION OF THESE TO THE ACCESS ROAD PAVED CONTRIBUTORY DRAINAGE AREAS.THE OWNER OR ITS CONTRACTOR SHALL APRIL THROUGH 1 NOVEMBER.REFER TO NODE DETERMINATION ND:2016D7565. EXCLUSION OF OTHER PRODUCTS. TO WORK AREA ROAD INSPECT,REPAIR AND REMOVE ALL SEDIMENT AND EROSION CONTROL DEVICES, NOTE: AS INDICATED HEREIN.ALL EARTH CHANGES SHALL BE DESIGNED, 22.THE CONTRACTOR/DEVELOPER SHALL NOTIFY THE TOWN ENGINEER AND/OR D.FILL MATERIAL SHALL BE FREE FROM DEBRIS,PERISHABLE OR COMBUSTIBLE CONSTRUCTED,AND COMPLETED IN SUCH A MANNER SO THAT THE EXPOSED IWWC AGENT AT LEAST TWO WORKING DAYS BEFORE THE FOLLOWING: MATERIAL AND FROZEN OR WET EARTH OR STONES LARGER THAN THREE 1.CONSTRUCTION PAD LOCATION TO AREA OF ANY DISTURBED LAND SHALL BE LIMITED TO THE SHORTEST POSSIBLE INCHES IN MAXIMUM DIMENSION. BE SET BY CONTRACTOR AND PERIOD OF TIME. 22.1.START OF CONSTRUCTION LOCATED AS REQUIRED FOR 22.2.COMPLETION OF CLEARING LIMIT DEMARCATION E.CONSTRUCTION AREAS SHALL BE PERIODICALLY SPRAYED WITH WATER CONSTRUCTION SEQUENCING. 3.DISPOSAL OF COLLECTED SEDIMENT SHALL BE MADE TO AREA DESIGNATED BY 22.3.INSTALLATION OF E&S MEASURES UNTIL THE SURFACE IS WET TO CONTROL THE GENERATION OF DUST. 2.SEE SOIL EROSION& SEDIMENT CONTROL PLAN, THE OWNER'S SOIL ENGINEER. 22.4.COMPLETION OF SITE CLEARING F.ALL REVISIONS AFTER APPROVAL HAS BEEN GRANTED SHALL BE C4.00-C4.03 FOR DIMENSIONS. 22.5.COMPLETION OF ROUGH GRADING FORWARDED TO THE APPROPRIATE DISTRICT FOR REVIEW. 4.FILTER FABRIC/SILT FENCE WILL BE INSTALLED ALONG THE TOE OF ALL 22.6.COMPLETION OF FINAL GRADING CRITICAL CUT AND FILL SLOPES. &THE LOCAL GOVERNING AUTHORITY SHALL RECEIVE WRITTEN NOTIFICATION 22.7.CLOSE OF CONSTRUCTION SEASON SEVENTY TWO HOURS BEFORE THE START OF ANY CONSTRUCTION. 5.ALL TOPSOIL NOT TO BE USED FOR FINAL GRADING/LANDSCAPED AREAS SHALL 22.8.COMPLETION OF FINAL LANDSCAPING BE REMOVED FROM THE SITE IMMEDIATELY,IN ACCORDANCE WITH APPLICABLE 22.9.PRIOR TO THE REMOVAL OF CONSTRUCTION E&S CONTROL SYSTEMS. H.SEEDBED PREPARATION: B STATE AND LOCAL LAW.ALL TOPSOIL TO BE USED IN LANDSCAPED AREAS SHALL BE STORED/STOCKPILED IN ACCORDANCE WITH APPLICABLE STATE AND TEMPORARY STABILIZATION (i) TOPSOIL SHOULD BE A MINIMUM OF SIX INCHES DEEP(LIGHTLY STABILIZED CONSTRUCTION PAD �13j LOCAL LAW STANDARDS. COMPACTED)BEFORE SEEDING. 0 SEDIMENT DISPOSAL AREAS AND TOPSOIL STOCKPILES NOT SCHEDULED FOR ad 6.ALL DISTURBED AREAS SHALL BE WETTED AS NECESSARY TO PROVIDE DUST CONSTRUCTION ACTIVITIES WITHIN THIRTY(30)DAYS OF DISTURBANCE SHALL BE (H) TOPSOIL SHALL BE TESTED PER LANDSCAPE PLAN PRIOR TO SEEDING. CONTROL. STABILIZED AS FOLLOWS: (iii)WORK SOIL AMENDMENTS INTO SOIL AS NECESSARY AS NEARLY AS 7.PAVEMENT BASE COURSE MUST BE PLACED IN ALL NEW ROADWAY AREAS A.SOIL AMENDMENTS AS NECESSARY. PRACTICAL TO A DEPTH OF FOUR INCHES WITH A DISC,SPRINGTOOTH Pavement or Impervious Surface SiltSoxxTM(13",12",or 18"TYPICAL) UPON COMPLETION OF FINE GRADING. HARROW OR OTHER SUITABLE EQUIPMENT.THE FINAL HARROWING OR B.ANNUAL RYE GRASS SEEDING APPLIED AT A RATE OF NOT LESS THAN 1 DISCING OPERATION SHOULD BE ON THE GENERAL CONTOUR.CONTINUE Concrete blocks or sand bags sized as needed(10'O.C.) 8.THE CONTRACTOR 15 RESPONSIBLE FOR ALL PAVED ROADWAYS,ON AND LB.PER 1,000 SF. ALL CLAY OR SILTY SOIL AND COARSE SANDS SHOULD BE ROLLED TO OFF-SITE,WHICH MUST BE KEPT FREE OF SITE GENERATED SEDIMENT AT ALL FIRM THE SEED BED WHEREVER FEASIBLE. WORKAREA AREA TO BE PROTECTED TIMES. DUST SHALL BE CONTROLLED BY SPRINKLING OR OTHER APPROVED C.MULCH ALL NEWLY SEEDED AREAS WITHIN 80 LBS.OF SALT HAY OR SMALL METHOD. GRAIN STRAW PER 1,000 SF. (iv)REMOVE FROM THE SURFACE ALL STONES ONE INCH OR LARGER IN 7c,� 9.ALL STORM DRAINAGE OUTLETS MUST BE STABILIZED,AS REQUIRED,BEFORE D.BETWEEN OCTOBER 15 AND MARCH 15,WHEN DISTURBED AREAS ARE ANY DIMENSION. REMOVE ALL OTHER DEBRIS,SUCH AS WIRE,CABLE,TREE ROOTS,PIECES OF CONCRETE,CLODS,LUMPS,OR OTHER THE DISCHARGE POINTS BECOME OPERATIONAL. SCHEDULED FOR IMMEDIATE LANDSCAPING THEY MAY BE MULCHED AND UNSUITABLE MATERIAL. 10.SILT FENCES AND BARRIERS MUST BE CLEANED OR REPLACED PERIODICALLY TO SEEDED PER ITEM C ABOVE. (v) INSPECT SEED BED JUST BEFORE SEEDING. IF TRAFFIC HAS LEFT SOIL REMOVE BUILT-UP SILT. PERMANENT STABILIZATION COMPACT,THE AREA MUST BE RETILLED AND FIRMED AS ABOVE. 11.SEDIMENT TRAPS MUST BE CLEANED WHEN CAPACITY HAS BEEN REDUCED BY REFER TO LANDSCAPE PLANS FOR PERMANENT STABILIZATION METHODS+PROPOSED CONTINGENCY SOIL EROSION AND SEDIMENT CONTROL NARRATIVE AN AVERAGE OF 2'-0"OVER ITS TOTAL AREA OR TO 70%OF ITS DESIGN SEED MIXES. VOLUMES,WHICHEVER OCCURS FIRST. 22.THE GENERAL CONTRACTOR WILL DESIGNATE PERSONNEL FOR 24 HOUR SECTION MTS A.PERMANENT VEGETATION IS TO BE SEEDED OR SODDED ON ALL DISTURBED EMERGENCY RESPONSE IN THE EVENT OF SEVERE WEATHER AND INCREASED 12.ALL EROSION AND SEDIMENT CONTROL DEVICES MUST BE INSPECTED ON A LAND AREAS WITHIN SEVEN(7)DAYS AFTER FINAL GRADING. MULCH AS POTENTIAL FOR SEVERE EROSION. DAILY BASIS AND CLEANED IMMEDIATELY AFTER EACH RAINFALL EVENT OF 1 NECESSARY FOR SEED PROTECTION AND ESTABLISHMENT. AMEND SOIL AS INCH OR GREATER. NEEDED PRIOR TO PERMANENT SEEDING.MEN IT IS NOT POSSIBLE TO 23.THE GENERAL CONTRACTOR IS REQUIRED TO MAINTAIN ON SITE OR HAVE THE PERMANENTLY STABILIZE A DISTURBED AREA AFTER COMPLETION OF AN ABILITY TO RETRIEVE WITHIN 12 HOURS THE FOLLOWING MATERIALS IN THE 13.ANY TEMPORARY OR PERMANENT FACILITY DESIGNED FOR THE CONVEYANCE OF EARTH CHANGE OR WHEN SIGNIFICANT EARTH CHANGE ACTIVITY CEASES, EVENT THAT THERE ARE DEFICIENCIES IN THE SESC MEASURES: WATER AROUND,THROUGH,OR FROM THE EARTH CHANGE AREA SHALL BE TEMPORARY SOIL EROSION CONTROL MEASURES SHALL BE IMPLEMENTED. Concrete blocks or sand bags sized as needed(10'0.C.) C DESIGNED TO LIMIT THE WATER FLOW TO A NON-EROSIVE VELOCITY. ALL TEMPORARY SOIL EROSION CONTROL MEASURES SHALL BE MAINTAINED A.25%OF THE INSTALLED LENGTH OF SILT FENCE 14.THE CONTRACTOR SHALL CORRECT ANY OMISSIONS,ERRORS,OR FIELD UNTIL PERMANENT SOIL EROSION CONTROL MEASURES SHALL BE OPERATIONS IMMEDIATELY AND IN ACCORDANCE WITH THE GUIDELINES FOR SOIL IMPLEMENTED.ALL DISTURBED AREAS,STOCKPILES OF FILL OR EXCAVATED B.EQUIVALENT TONNAGE OF STONE FOR STABILIZATION OF 2 STABILIZATION AREA TO BE ENTRANCES.STONE COULD BE USED FOR SLOPE REPAIRS,ENERGY PROTECTED EROSION AND SEDIMENT CONTROL. MATERIAL SHALL BE STABILIZED IN SUCH A MANNER AS NOT TO CAUSE DISSIPATER ENHANCEMENTS,ETC- UNREASONABLE HAZARD TO PERSONS OR PROPERTY. 15.ANY CONVEYANCE OF THIS PROJECT PRIOR TO ITS COMPLETION WILL TRANSFER B.MATERIALS SPECIFICATION:LAWN+MEADOW AREAS C.HEAVY EQUIPMENT CAPABLE OF TRENCHING/EXCAVATING LARGE AREAS To FULL RESPONSIBILITY FOR COMPLIANCE WITH THE CERTIFIED PLAN TO ANY DIVERT AND CONTROL RUNOFF IN A CONTROLLED MANNER. SiltSoxxTM(8",12",18"TYPICAL) SUBSEQUENT OWNERS. (i)SOIL ANY SOIL HAVING A pH OF 4 OR LESS CONTAINING 16.SOIL EROSION AND SEDIMENT CONTROLS MUST BE INSPECTED BY THE TOWN IRON SULFIDES SHALL BE COVERED WITH A MINIMUM OF D.HAVE DESIGNATED A HYDRO-SEED CONTRACTOR CAPABLE OF RESPONDING ENGINEER OR IWWC AGENT BEFORE WORK MAY COMMENCE. TWELVE INCHES OF SOIL HAVING A pH OF FIVE OR TO THE SITE WITHIN 12 HOURS WATER FLOW MORE PRIOR TO SEED BED PREPARATION. 24. ANY STUMP GRINDINGS OR WOOD CHIPS GENERATED ON-SITE SHOULD BE RETAINED FOR USE TO BACK UP SILT FENCES. WORK AREA NOTES Date Description No. 1. ALL MATERIAL TO MEET SPECIFICATIONS. 2. FILTER MEDIA TO MEET APPLICATION REQUIREMENTS. REVISIONS 3. FILTER MEDIA TO BE DISPERSED ON SITE,AS DETERMINED BY ENGINEER. PLAN uTS TAKE(2X4,(2)PER BALE) SiltSoxxTM for Sediment Control on Pavement 3/4"WASHED /-S_TAW INTS TRAW STONE,6"THICK BALE 0 MIL PLASTIC LINER R R�OLL ..... .5% 3/4'WA SHE 1//- STONE W SHE SUMP TAKE SUMP 24" 10 MIL PLASTIC S' MIN. 0 MIL PLASTIC LINING STOCKPILE 3/14-4WASHED LINER ALTERNATE SECTION STONE,6"THICK USE WHERE MORE THAN ONE INSTALL FIBER ROLL ACCESSIBLE SIDE IS NEEDED AROUND STOCKPILE LANGAI V SECTION A-A Langan Engineering and EXISTING GRADE ALL CONCRETE Environmental Services,Inc. TRUCKSSHALL 555 Long Wharf Drive LIMITS OF 10MIL 0'MIN- WASHOUTHERE New Haven,CT 06511 PLASTIC LINING /4-WASHED T:203.562.5771 F:203.789.6142 www.langan.com STONE,6"THICK r 0,//-LIMITS DF10MIL PROFILE Project LSTAKE PLASTIC LINING WASHOUT SIGN STOCKPILE 1600 OSGOOD STREET A (TYP.) A NOTES: 1. PIT IS SPECIFICALLY DESIGNATED,DIKED AND 15'MIN. UMP_/ SLOPE 2.5%MIN. IMPERVIOUS CONTAINMENT TO PREVENT CONTACT E BETWEEN CONCRETE. 2. WASH AND STORMWATER. 3 WASH WATER SHALL NOT BE ALLOWED TO FLOW TO SURFACE WATER. NORTH ANDOVER MASSACHUSETTS 4- FACILITY MUST HOLD SUFFICIENT VOLUME TO Drawing Title CONTAIN CONCRETE WASTE WITH A MINIMUM FREEBOARD OF 12"_ �J 5. FACILITY SHALL NOT BE FILLED BEYOND 95% CAPACITY UNLESS A NEW FACILITY IS SOIL EROSION & CONSTRUCTED. 6. SAW CUT PORTLAND CEMENT CONCRETE, SEDIMENT RESIDUE FROOFM IN THE UPI AWCUPTIT.&GRINDING TO BE STAGGERED HAYBALES---___ / \- 8" LIMITS OF STRAW DISPOSED 10MIL PLASTIC BALE 7. CONCRETE WASHOUTS SHALL BE LOCATED A LINING MINIMUM OF 100'FROM DRAINAGE WAYS,INLETS, PLAN &SURFACE WATERS. CONTROL DETAILS I 8. MANUFACTURING CONCRETE WASHOUT DEVICES NOTE:SEE SOIL EROSION& MAY BE USED IF REMOVED FROM THE SITE WHEN SEDIMENT CONTROL PLAN FOR 95%FULL CAPACITY. PLAN LOCATION OF HAYBALE BARRIER Project No. Drawing No. 3 CONCRETE WASHOUT AREA TEMPORARY SOILI CONCRETE STOCKPILE 140182701 Date 0 7/2 412 01 9 C E 5 0 1 Drawn By F RJS Checked By NLK Sheet 82 Of 104 d,t,\CAD\Ol\,1,,,tfl,,\Ci,il\l40182701-CESOI-DIOI.dg D7/19/2019 Ti-17 46 U-r:-l-,Style Table:L,ng,n.,tb Layout CE501 1 2 3 4 5 6 7 8 Q 2 2—NO.3 REBAR,STEEL PICKETS CURB DEFLECTOR SECURE"SILTSACK"FILTER OR 2"X 2"WOODEN STAKES 1.5'TO (OR EQUIVALENT)TO GRATE. 2'IN GROUND Flow "SILTSACK" 4"VERTICAL FACE DISTRIBUTOR: A ACS ENVIRONMENTAL \ STRAWBALES NOT REQUIRED BEHIND CATCH BASINS WITH 800-644-9223 CURB PIECES. hob. 0000 '4sa.. tf'+ - 0000 - R"�f g FLO FLOW .t R' a �.0. • O u 3 � TYPE B—CURB INLET NOTES: STRAWBALES ARE TO BE PLACED AROUND ALL CATCH 1. CONTRACTOR IS TO CLEAN INLET FILTER WHEN RESTRAINT CORD IS ND N.T.S. BASINS AFTER THE INITIAL GRADING TO FILTER AND DIVERT LONGER VISIBLE AS PER MANUFACTURER'S SPECIFICATIONS. Q SEDIMENT UNTIL FINAL PAVING IS COMPLETE. 2. CONTRACTOR TO REMOVE FILTER JUST PRIOR TO PAVING. B INLET PROTECTION N.T.S. 0 a COMPACTE 12" BERM MIN NATURAL GROUND 0 FLOw FILL SLOPE 2, \\�j 18"MIN. BERM FLOW N.T.S. Anchor posts should be a minimum Orange plastic fence,welded flair;fence, COMPACTE MIN 12". ?in steel'L�channel, p- chain link fence,silt fence or su er Silt fence � NAORRFILLGS�OPE. BERM //\\// 6 ft in length i Maximum distance C BERM/DITCH between posts of 6 ft NATURAL GROUN FLOW OR CUT/FILL SLOPE. a"MI j��/ 4 fee height DITCH Date Description No. NOTES 1. POSITIVE GRADE MUST BE PROVIDED TO ASSURE DRAINAGE.2:1 MAX.SIDE SLOPE.IF SLOPE EXCEEDS - REVISIONS 2%OR CHANNEL IS CONSTRUCTED IN FILL,PROVIDE CHANNEL LINER PER DETAIL,EC 5,TRY NOT TO EXCEED 5%(HIGH RUNOFF VELOCITIES RESULT). MAXIMUM DRAINAGE AREA IS 5.00 ACRES WITHOUT SUPPORTING CALCULATIONS FOR PERMANENT CHANNEL. DIVERSIONS AT THE TOPS OF SLOPES MUST EMPTY INTO AN APPROVED SLOPE DRAIN(SEE DETAILS).THE BERM/DITCH IS THE MOST COMMONLY USED DIVERSION. 2. MACHINE COMPACTING OF ALL FILL IS REQUIRED/ Note:Tree protection fencing should he maintained 3. DIVERSIONS SUFFICIENT TO DIRECT ALL SEDIMENT—LADEN STORMWATER INTO SEDIMENT CONTROL DEVICE throughout construction MUST BE INSTALLED PRIOR TO CLEARING AND GRUBBING OF AREA(OR IN CONJUNCTION WITH THIS OPERATION IF SEDIMENT CONTROLS AND DIVERSIONS ARE INSTALLED AT EACH CRITICAL POINT AS INDICATED). tisa 8 in Fire L'staples 4. DIVERSIONS SHOULD BE LOCATED AS SHOWN ON THE PLANS AND TO MINIMIZE DAMAGES BY D CONSTRUCTION OPERATIONS. to secure fence bottom 5. DIVERSIONS SHOULD BE SEEDED AND LINED WITH STRAW MAT IF THEY ARE TO REMAIN IN PLACE OVER 14 DAYS. 6. CHECK DIVERSIONS AFTER EACH RAIN,AND ONCE PER SEVEN CALENDAR DAYS OR MORE FREQUENTLY IF REQUIRED BY REGULATORY AGENCY. REPAIR AS NEEDED TO MAINTAIN FUNCTION. LANGAN Langan Engineering and TEMPORARY DIVERSION BERM/DITCH TREE PROTECTION FENCE INSTALLATION EnvironmentalLong gWharDrive Inc. 3 4 555 Long Wharf Drive N.T.S. New Haven,CT 06511 T:203.562.5771 F:203.789.6142 www.langan.com 1. PREPARE SOIL BEFORE INSTALLING BLANKETS,INCLUDING ANY NECESSARY APPLICATION OF LIME,FERTILIZER,AND SEED. NOTE:WHEN USING CELL—O—SEED 00 NOT SEED PREPARED AREA. j Proect CELL—O—SEED MUST BE INSTALLED Wl T}i PAPER SIDE DOWN. � 2. BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE BLANKET IN A 6"(15cm)WIDE TRENCH WITH APPROXIMATELY 12"(30cm)OF BLANKET EXTENDED BEYOND THE UP—SLOPE PORTION OF THE TRENCH. ANCHOR THE BLANKET WITH A ROW OF STAPLES/STAKES 1 t APPROXIAMATELY 12"(30cm)APART IN THE BOTTOM OF THE TRENCH. BACKFILL AND COMPACT 1600 OSGOOD STREET THE TRENCH AFTER STAPLING. APPLY SEED TO COMPACTED SOIL AND FOLD REMAINING 12" —> (30cm)PORTION OF THE BLANKET BACK OVER SEED AND COMPACTED SOIL. SECURE BLANKET - OVER COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED APPROXIMATELY 12"(30cm) ® ------------------- APART ACROSS THE WIDTH OF THE BLANKET. E 3.ROLL THE BLANKETS(A.)DOWN OR(B.)HORIZONTALLY ACROSS THE SLOPE. BLANKETS WILL ^^^^ UNROLL WITH THE APPROPRIATE SIDE AGAINST THE SOIL SURFACE. ALL BLANKETS MUST BE ......... ............. —15" SECURELY FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN APPROPRIATE LOCATIONS AS SHOWN IN THE STAPLE PATTERN GUIDE. WHEN USING OPTIONAL DOT SYSTEM, NORTH ANDOVER MASSACHUSE TS STAPLES/STAKES SHOULD BE PLACED THROUGH EACH OF THE COLORED DOTS CORRESPONDING ®THE DrawjyaglI L EROSION & TO E APPROPRIATE STAPLE PATTERN. 4. THE EDGES OF PARALLEL BLANKETS MUST BE STAPLED WITH APPROXIMATELY 2"-5" i 1-3 (5cm-12.5cm)OVERLAP DEPENDING ON BLANKET TYPE. TO ENSURE PROPER SEAM ALIGNMENT, O PLACE THE EDGE OF THE OVERLAPPING BLANKET(BLANKET BEING INSTALLED ON TOP)EVEN WITH 5 �J ETTL EM E N T THE COLORED SEAM STITCH ON TEH PREVIOUSLY INSTALLED BLANKET. C GROOVE SLOPE BY CUTTING FURROWS ALONG THE CONTOUR, 5.CONSECUTIVE BLANKETS SPLICED DOWN THE SLOPE MUST BE PLACED END OVER END(SHINGLE CREATING IRREGULARITIES IN THE SOIL SURFACE TO CATCH STYLE)WITH AN APPROXIAMTE 3"(7.5cm)OVERLAP. STAPLE THROUGH OVERLAPPED AREA, RAINWATER AND RETAIN LIME,FERTILIZER,AND SEED. APPROXIMATELY 12"(30cm)APART ACROSS ENTIRE BLANKET WIDTH. CONTROL DETAILS NOTE:IN LOOSE SOIL CONDITIONS,THE USE OF STAPLE OR STAKE LENGTHS GREATER THAN 6"(15cm)MAT BE NECESSARY TO PROPERLY ANCHOR THE BLANKETS. Project No. Drawing No. SURFACE ROUGHENING 140182701 $ 6 SLOPE STABILIZATION(SLOPES 3H:1V AND STEEPER) Date N.T.S. N.T.S 07/2412019 JJJ 01 Drawn By F RJS Checked By NLK Sheet 83 of 104 Filename:\\langan.,.,,Ndata\NH\data7\140182]01\project data\GAD\01\sheetfiles\Civil\140182]01-CE501-0101.dwg Date:7/19/2019 Ti—:17:46 User cm b.n Sryk Table:Langan.stb LayauL CE502 1 2 3 4 5 6 7 8 Q y� 2 �. Tao'BUPFE RARFA \ V so NO BUILD BUFFER 25'NO DISTURB BUFFER P' WERAND LIMITS SHEET LEGEND MODIFY , I CG101 I CG03 I CG106 I �FSIOPOSE)FSJVAIE �Q MODIFY ccloz cclaa cclav �..- DMSION LOTD"tA6AC EXSTNG O: SIGNAL I I I I l x " -4 "','.." a_ y \\ ,. ET mac;.. .. a, .. � �� .., ,• � ':�.. �. .. v cue PROPERTY LINE ��,. ., �..., ..: �_ ..- s :,.... ;,�. 5 56 .•� ';. 1. _ \�-. EXISTING 3-STORY OFFICE USE TO REMAIN " FFE.±45.95 LOT 8.26.89 AC , .-• ,;� ¢n .... ��....:...•. � �..,—='� ' a 5 0 FFE.±47.90' s p q8 4 0 t� PROPOBE3 9 SU r BDMION S J ,.-LINE 50 PROPERTY INE C h 5 0 I \ RS � p,6',_ 4 I 0 Q 0 0 0 168E BUFFER:AREA s e 4� _ o000 01�0 � e ,.4 ... :;o .. ... .. ...... 751NODISTUR11.BUFFEF W NO BUILD SUP Q _ LLAA 44 i.. <'M. . CONTR�SC.TORSHALL REFER TO ARCHITECTURAL PLANS AND SPECIFICATIONS - " WER.kPI..,; .. Date Description No. _e. �F FORA..AL LOCATIONS OF ALL UTILITY ENTRANCES TO INCLUDE SANITARY " SEWERlATERALs.DOMESTIC WATER SERVICE,ELECTRICAL,TELECOM AND REVISIONS � ,� � ' •g':...OAS SERVICE,ROOF DRAINS,AND ALL OTHER UTILITIES CONTRACTOR SHALL :. .; ...._,..�..... ......� �J7,�� .��, ,E=" ..•� COORDINATE:INSTALLATION IN SUCH A MANNER AS TO AVOID CONFLICTS 7 'AND 70 ENSURE PROPER DEPTHS ARE ACHIEVED AS WELL AS . s •' C(?ORDUTATING WITH `, � `� :•�1��i.�Ny��IF�EC7'IE3t+�5''l�`Fft�IRY?ACCfl'165... L ❑ � F` PROPOSED DISiRIBUIION FACILITY ti FIFEEe. .� ,_ ,:�x.. ,�; O — .—±47 00' ,.. �� `'—�''�. �- .:.x... .. ... LOT B=109.86 AC } 4 4 E LANGAN Environmental Services,ngan Engineering and la c. _._.. 555\ Long g hart Drive Ha T.......... 06511 New v C�� _- -- e. A ti• APPRO70MATE f ' d• � Ste! T:203.562.5771 F:203.789.6142 www.langan.com { 7RIVERFRONT 40..� 411 Project a, 4 _ ............... 3g 1600 OSGOOD STREET j 30 35 z9 4� E e \ �,� � 7 zs.00 �J� _� \ � 100'BUF�AREA NORTH ANDOVER AAASSACHUSFITS \ O `� J ` Drawing Title SW NO BUILD BUFFER = ' f -�� a ss'NODE DISTURB BURR a APPROXIMATE '. GRADING A N D r \ 1 f� DRAINAGE PLAN - OVERALL �- Project No. Drawing No. r e� 140182701 Date \ o �s 07/24nOl9 CG100 50 50 100 150 Drawn B ', TDO F SCALE IN FEET Checked By - NLK Sheet 48 of 104 Filename:\\Iangan.-om dtl talNHVltlata7\140182701\Project Data\CAD\01\SheetFllee\CIv111140182701-CG101-0101.d g Dale-7/19/2019 Time-17'53 User.creynolds Style Table-Langan.stb Layout CG100 1 2 3 4 5 6 7 8 Z �a g 0 =Z z PROPERTY LINE(TYP) O �S6 _ SHEET LEGEND �- \\ \� .. `... _.. ... � ... I CG101 I CG03 I CG106 I CG,02 CG104 I CG107 I C i �- L cclos I CG108 I v \\ L J W O WETLAND LIMITS � I \ \ \ \ 25'NO DISTURB BUFFER 50'NO BUILD BUFFER i 100'BUFFER AREA I . \ EXISTING GRADES 0 BE �p MAINTAINED WITHIN PA EMENT \ +r p'!�n DEMOLITION AREAS(TYP) \ \ \ i�\ C ry aF � \ —_ \+r\S� \ \ OJ \ \ \ I Date Description No. \ \ - REVISIONS v \ \ \ e D i �---100'BUFFER AREA ! LANGAN O I a 50'NO BUILD BUFFER Langan Engineering and Environmental Services,Inc. 25'NO DISTURB BUFFER 555 Long Wharf Drive @" .T1�AND LIMITS } New Haven,CT 06511 T:203.562.5771 F:203.789.6142 www.langan.com , \ \ Project V 1600 OSGOOD STREET APPROXIMATE .., \ \� 200 FT RIVERFRONT \ ........ .. ............... ........ ...... NORTH ANDOVER MASSACHUSETTS \ `' Drawing Title PROPERTY LINE \\ =- \ (TYP) \ \ ... GRADING AND DRAINAGE PLAN Project No. Drawing No. 140182701 \ I Date MATCHLINE:CG101 \ \\ = 07/2412019 G 1 01 MATCHLINE:CC102` �. I , 1 Hu Drawn By C F 40 0 10 25 40 TDO Checked By SCALE IN FEET NLK Sheet 49 of 104 Filename-\\langan.cam\data\NH\Adata7T140182]01\Protect Data\CAD\01\SheetFileslc;1\140182701-CG101-0101.d,g Date-7/19/2019 T-1753 Us,creyncltls Style Table Langan.stb Layoet'CG101� 1 2 3 4 5 6 7 8 Z MATCH LINE•CG101 — MATCHLINE:CG102 A--�� eve 14 A SHEET LEGEND ` I I CG101 I CG03 I CG106 I • # I I CG102 CG104 I CG107 I \ \'•,\ \ I - CG105 CG108 °z BLu \ A i � t# a e \ � i Date Description No. — REVISIONS \ \ PROPOSEf� SUBDIVISION LINE\ D �+ PROPERTY LINE (TYP) \ f. sy \ \ 90 APPROXIMATE LANGAN \ ��J 200 FT RIVERFRONT \ Langan Engineering and \ , \ Environmental Services,Inc. 555 Long Wharf Drive New Haven,CT 06511 T:203.562.5771 F:203.789.6142 www.langan.com Project \ 1600 OSGOOD STREET E \ \ \ NORTH ANDOVER MASSACHUSETTS Drawing Title \ z z GRADING AND \ DRAINAGE PLAN II Project No. Drawing No. \ \ 140182701 Date \ 07/2412019 CG 1 02 \ Drawn By F 40 0 10 25 40 TDO Checked By SCALE IN FEET NLK Sheet 50 of 104 Filename'.\\Iangan.-om dtl talNHOdtl ta7\140182701\Project Dala\CAD\01\SheetFllee\CIv11040182701-CG101-0101.dwg Date'.7/10/2010 Ti--17'54 User.—ynolds Style Table-Langanstb Layout CG102 1 2 3 4 5 6 7 8 Q 2 z z �Z 100'BUFFER AREA MODIFY EXISTING SIGNAL A SHEET LEGEND _ PROPOSED CG101 I CG03 I CG106 I w, SUBDIVISION I ccloz I cc104 I cc107 I ,. D-1 DRY...WELL 1 i...�.. :. G DRAINAGE ...... _ C GR:40.00 R -. PIPES TO RMA ..... .. BOTTOM:3ti OO /�OD ,. ......... ........................ N �UTE725J _ yZ OSCOOD STREET(ROUTE 125) I cc1 os cc1 oa v COMBINATION TRUCK ISD=920' Q Y; -- --�--� -_ (52 MPH DESIGN SPEED) Z e A B b-1 MH-12 OCS D.-1 GR:46.74... ...... GR.42.50 ..�..,.'. ....�,. : _.�......,: .. INV.IN(18"S):42.14.. ter.,.:. , , ............................... ............... .y INV.OUT:41.50 PRO71RTY7 INV.IN(12" LINE P).. ..�.. .��,.:�...�.. d . ,\ INV.IN(12"SW):42.28 - ........��_ .�.�. ., `INV.OUT:.,42.14 40.00 _'mot.,. ...... ......... .............................................................. ............................ RA GARDENS- ARD TS N� 1,BE INSTALLED IN � SOAPS ISLANDS;REFER TO LA SERIES FOR } _LOC TI�ONS.'RAIN WARDENS WITHIN AUL TO BE - p \ _INST LLED=WITH IMPERMEABLE LINER(TYP) ' g ee BC47.4 BC49.00 G:47.43 OUT,-OU 44.40 22 LF 12"HDPE®1.-Oor OR:45.17 70 LF 15"HDPE @ 0.50 D'DR§VL L 2 'INV.OUT:42.50 - ?,. ............ .................... ..... 54 LF 12" GR:49.01- ': ..''�' \\..... .- -` ; I TT .00 ? INV.OUT:44.50 _. - '' a .. i 22 LF 12'.HDPE @ 1.00% --. .,e....._ -- HDPE 1.00% a :....:..... D B 4 31 LF 12" 37 LF 24" G� HDPE @ 0.50% INV.IN 12 W.44.2 HDPE`:®1.00% ( ) ...... - ; AN OU: 5 � INV.1N,(12 E):44.28 ...... _ .... C LEAKOFF WITH GR:45.94 ' INV 1N(12 S)43.34. ....... - - -.. C - 1 FT PE(1GRAVEL INV.OUT:42.50 INV OUT:42,83 It 40 66 57 FILTER(TYP) _ 22 LF 12.. .` HDPE @ 1.00% M I .. .. rh BC47.86 68 LF 18" HDPE®0 �p� n N .............. ...... ........................................... .. - .50% p 89 LF 12"HDPE @ 3.00% - �, D-1 CB-6' Date Description No. 22 LF.12" GR:5230 ._ - 0; I HDPE'®1.Do% INV..OUT:46.00 REVISIONS C CB-3 OR:'43,05 INV,OUT:39.53 ' , D _19 LF 12 " ,HDPE @ 0.50% cc LF12"'HDPE@ 1.007 26 LF 12" - D-1 YRD-9 --_--;- HDPE®0.50% OR:48.90 -5 v� INV.OUT:44.50 170 LF 24"HDPE @ 0.50% C MH I OR:-5 D-1 MH-13 - n INV.IN(12"SE):39.4 �''. INV IN 21 (1 LANGAN b` 1 INV.IN(12 N):39.44 22 LF 12" INV.IN(15"S):42.48 EXIS17NG 3-STORY OFFICE USE TO REAMIN-±133,3335F FOOTPRINT 5 LF 12"RCP @ 1.00% 'a g INV.OUT: 9.44 BC52.1 INV.IN(12"E):44.18 r HOPE 0 1.00%INV.IN(12"SW):44.18 STRU-368 $u Langan Engineering and `0 1 YRD-7INV.OUT:42.48 "OR:45.60 Y;i Environmental Services,Inc. 11 b'D-1 GR 4740 A-1 MH-4 SUMP PUMP FFE=±45.95� INV.IN(15"N)-39.91 i z INFILTRATION D-1 DRY LL 3 'D-1 MH-ti �DUT:44.40 27 LF 12"HDPE®1.00% PROPOSED 4 FT GR:46.58 INV.IN(12 E):39.91r 555 Long Wharf Drive iGR:40.00 GR 45.70 A-1 CLCBARING DOCK INV.IN(12"N):40.23 INV.OUT:39.91BASIN New Haven,CT 06511 BOTTOM: lY._IN.24`8E)4i.95. OR:43.80 INV.OUT:40.84 124 LF 15"HDPE @ 0.50% BC47.82 BC50.4 BC50.6 fNV 1N 12"t)42'19D-1 YRD-5 INV.OUT:40.50 5 LF 12"RCP®1.00% 6 D-1 YRD-1 " OR:45.90 ... ... .......... ...... BC50.18 FNY.IN'12;NE),,4:(.QB,,D-1 YRD-2 '''' T:203.562.5771 F:203.789.6142 www.langan.com C48:2 GR.45.68 ....INV.OUT.42.50 .., V:OUT,.?1.96 <. .. VN .'.' INV.OUT.41.50 ,. ,. '. 'INV.OUT:42.00 .._ ...:..... ............ .a: Project ' = `22 LF 12"HDPE @ 1.00% ........... ' J C49.67 BC51.79 _ OR:48.98 .. ;: BC45.04 RCp<F 6=' BC48.8 C50.29 .: .. 44.3 A-1 YRD-1 = D-1 CB-3 � "" "��''.INV.IN(24"S):41.14 '�' ��I' ® 7 � ' � � - =6C4510 - BC46.63 ?^..... GR:43.29 sue....... ;. BC4749 s _OR:45A2__ s INV.O: E:4,.76 iNW`t111T 394L.. 1600 OSGOOD STREET ENV.OUT:_.41.5 R8 's= ( ) .. 9 21 LF 36 INV.OUT:41.14 SEDIMENT $ ':'s :...;' FFE=±47.90' P CT 1 OD% OREBAY. HDPE @ 0.50% 2 D-1 CB-1 _ 19 L 15" o F RC NTH STON R9 S ,'GR:46.63 D-1 EX YRD-1 -CURB LEAKOFF WITH A-1 MH-3 s 'INV.OUT:43.00 1-FT PEAGRAVEL OR:43.97 E HECK R� 22 LF 12 OR:47.74 44.1 FILTER(TYP) INV.IN(18"N):39.22 DAMN 31 LF 12' HDPE @ 1.00% INV.IN(18"SE):44.15 _, HD(tlE @ 1.00% = S7 �` ,,,'2&,LF 12"HDPE @ 1.00% INV.OUT:42.24 - INV.IN 15"NE:39.22 - INV.OUT:39.22 D-1'MH-1 c R8 OR: .36 / D-1 MH-5 28 LF 24"RCP 0 1.23% - NORTH ANDOVER MASSACHUSETTS _ OR:45.18 INV.IN 4"S):40.7 OR:48.05 D-1 MH-6 A-1 YRD-2. - 273 LE X Drawing Title INV.OUTS 40.1IN 0 40.10 INV.IN(12 41.26 „ ` INV.IN(12"E):42.72 OR:48.57" OR:44.22' _ 18 HDPE @ 0509, BC44.76 b-1 FES-1 INV.OUT.40. INV.IN(24 E).41.90 IfJV.1M�2"NT:40.26: - ~ - I OR:FES- R D-1 MH-tO R R9 INV.OUT:41.54 INV.IN(12"E):41.90 - 169<F OR:45.25 S INV.IN(30"E):40.3 0 INV.OUT:41.91 1 O"hOpE®0 OUT.,40 28 ,;...... I INV.IN(12"SX 40.38 98.. �. A-1 MH-7 3 509 GRADING AND INV.IN(12"N):41.19 BC47.9 OR:44.30 V.OUT:40.38., 4g .. '.'..:. :,. ,....,.. ..... - INV.IN(12"N):39.11 .. _ INV.IN 12" 41.20 DRAINAGE PLAN III GR. 43 � � �; ;�:_.., - � _= INV.OUT:39.11 BC45.0 INV.IN E):40. .... ' INV:OUT:40. ( _ 's �: kh 30 LF 12"HDPE @ 1.00% .. .D-1 CB-2 •t - INV.OUT:41.25�- 0 HDPE @ 0.50% OR:50.80 R - NO. Drawing o. OR: 8 69 LF 24' C47.73 74 LF 24": _ JNV.O.T;43.03 220 LF 12"HDPE @ a.97% Project wing N 172 LF 3 BC45 67_ D • INV. T:40.55 HDP @ 0.50% 0 GF 24"HDPE @ 0.50% HDPE,@ 0.50%:. 226 LF 12"HDPE 6 0.50% = A-1 CB-3 140182701 E` `104 LF 24"HDPE; 0.50% Cv7.34 rn:4.a a C46.98:BC46.48 4 MV.OUT?41.50 I ate 34 LF 36"HDPE®0.50% < 22 LF=30"HDPE @ 0% �- 34 LF 12"HDPE®0.50% - - - 07/24/2019 raven CG 1 1 03 BC43.9 711F I �� 46 i- D By GPI- _ R�.�r 104 F 40 0 10 25 4o TDO Checked By SCALE IN FEET NLK Sheet 51 Of 104 Filename'.\\Iangan.comltlatalNHV\tlata]\140182]01\Project Data\CAD\01\SheetF11ea1CIvi11140182]01-CG101-0101.tlwg Dale-]/19/2019 Time-1]'54 User.creyn lds Slyle Table'Langan.stb Layout CG103 2 3 4 5 6 7 22 LF 30"HOPE O�50 '34 @ LF 12"HDPE 0.50% @ P Al BC45.4 INV IN .60 C YRD-12 C YRD-8 C44.9 G C YRD-14 GR:44.16 411,00 INV.OUT: GR:44,17 INV.OUT:39.25 38 LF 15" INV.OUT;40.19 37 LF 12"HOPE®tO0% C YRD-10 J8 LF 15"HDPE U'T.00%38 LF 15"HDPE @ 1.00% 195 LF 21" V 0 43.26 'GR:44.16 0,40% GR: �8 LF 15"HDPE @ 1.00% 41.10 ANY.OUT, LPE®0 a% 143 LF 42" S 135 LF 42"HOPE 0 0,40% 144 LF 36"HDPE.®0.40r� 39.98 RCP INV.OUT. A )IIIIIIIIIIII'm M 9 HOPE 0 0.40% "C C MH-15 MH-16 �2 C FES-4 OR:45.10 �GR:45.10 C MH-14 OR:39.10 GR:45.10 INV.IN(36"'s):,39.28 -INV.�N(36"S):39.82 SHEET LEGEND INV.IN(12"W)::39.60 INV.N(15"W):40�28 ".............................. SEDIMENT FOREBAY VITH INV.IN(42"S):38.74 STONE CHECK DAMN INV.IN(12"W):38.93 INV.IN(15'SE):40.28 C MH-17 0 NV.IN(15"SE):39.60 C-1 DRY WELL 1 GR:45.10 0 ull INV.IN(15"SE):38.87 M.OUT:39f.28 INV.OUT,39.82 INV.IN(15"W):41.18 n GR:38.00 311,74 C-1 INFILTRATION OTTOM: 4.OQ INV,OUT INV.IN(21"SE):40.32 INV.IN(15"SE):39.87 45 45 --W.OUT.,4040 V IN 1, CG101 CG03 CG106 LF 36"HOPE @ % C C61i* �0� c. GR:4.3.11 INV.OUT.40.00 F4-6.4-a 20 LF 12_ >IIE40 CG102 HOPE 0 1:001'� J CG1 04 CG107 C YKU C MH- INV.OUT:41.22 43.41 O INV.IN(15- C YRD-5 C YRD-11 INV.IN(12"S):39.80 GIR;4.195 NY,IN(12"N):.39,8 CG105 CG108 INM OUT. YR Aun 19YO Nun Nun M n Nun jLEAKOFF WITH INV IN(30"S):38.82 LF 1-FT PEAGRA MH-23 2 0: 9 C _J d PE 0 1.00% /III- 40.55 FILTER(TYP) NV.zIN(112-W):42.40 GR:45.58 z =.'OUT:38.82 6 r-INY IN(30"S);39. B C CB-1 L L. C FES-2 INV.IN(12"W);42.6 A A GR:35.10 39,69 _-G:43.11 INV.OUT.,40.00 C YRD-1S, C MH-7 GR:44.98 C FES-11 GR:41.8b 65 LF 30" 78 LF 24" GR:35.10 52 LF 30" 78 LF 3o, INV.OUT.41.99 BC44.11 INV.IN(42"W):34.86 0 Q 74�1 Jr)PF 0 0 7�,% Hf)PF @ Q 7'�Z NHDPE�@ 0.76�i INV.OUT:34.86 RAIN GARDENS TO BE INSTALLED IN Rr.Wi A ------ .37 .1 -,,LANDSCAPE ISLANDS,REFER TO LA SERIES FOR LOCATIONS.RAIN GARDENS WITHIN AUL TO BE �BQ453C5, cc IB INSTALLED WITH IMPERMEABLE LINER(TYP) =46.Q ';D945 C RL-le 9 43.12 E 90 lff��.3 86 LF 42" ��419 LF 12� INV.OUT:43.00 lE HOPE 0 0.99% 60 LF 12',',_� 6:LF i2`1 HDPE 0 1.01% to CO C M-25" CO HOPE @,1,01% C UK:46.15 pt L 18 YRb-1 V.IN(12"S):42.03 DIP A Z.N(14"W):40.86 RL-6 INV.OUT."40.86 'HDPE' 53 LF 24" 12 -GR:47.00 HOPE 0 0.. INV.OUT;43.00 LF 24"HOPE 0 0.74% RL-4 C RL-8 HOPE 0 1.01% OR:47,00 C MH-20 47.00 OR:45,78 ........... GR:45,22� INV.OUT:�411.30 V.OUT:43.00 NV.IN'(iO*S):39.30 NV.IN(310"SE):37.70 C MH-24' ]NV,,,IN•(412,7 W)42,40 :NV.IN(18"SW):41.00 NY'OyrF, GR:46.13' INV.IN(12-W):42.40 INV.OUT.,�37,70 INV.IN(24"S):40.27 C RL 7 INV.OUT.,40.27 RCPOSED ffl"11 I I C 0 .4 410b SUBDIVISIO C RL-3� .................. ------ OUT: CONTRACTOR SHALL REFER TO ARCHITECTURAL PLANS AND SPECIFICATIONS FOR ACTUAL LOCATIONS LINE..... GR:47.00 OF ALL LMLITY ENTRANCES TO INCLUDE SANITARY SEWER LATERALS,DOMESTIC WATER SERVICE, INV.OUT.43.00 ELECTRICAL,TELECOM AND GAS SERVICE,ROOF DRAINS,AND ALL OTHER UTILITIES.CONTRACTOR -47 LF 42"HOPE @ 0.49% SHALL COORDINATE INSTALLATION IN SUCH A MANNER AS TO AVOID CONFLICTS AND TO ENSURE PROPER DEPTHS ARE ACHIEVED AS WELL AS COORDINATING WITH THE REGULATORY AGENCY AS TO 187 LF 30"HDPE @ 0.75%' u THE LOCATION AND SCHEDULING OF CONNECTIONS TO THOR FACILITIES. SIEDII NT FOR BAY WITH • C MH CHECK AMN GR:40.45 INV.IN(42"W):35.09 NV.IN(118"N):35.35 NY OUT.,Z5.09 ................. F 22 LF 18'HOPE®0 98% __-130 LF 42"HOPE @ft.50% Date No. C MH- 2 PROPOSED DISTRIBUT11ON FACIUW Description GR:43.22 ±823,522 SF FOOTPRINT INV.IN(18"E):34.43 ±3A36,ODO GSF I TION ASIN INV.IN(24"M:34.43 FIFE±47.W REVISIONS C -19 -34.43 MH INV.OUT. GR:46.08 ................ ,-INV,IN(12"S):42.77 ............INV.IN(30"E):36.30 INV.OUT.,36.30 C RL-2 _GR:47.00 LF 12"HDPE 0 1.01% INV.OUT:43.00 C MH-9 0 - 11-1- GR:40.62 gs, JNY 114(30"W):35.74 IN(15"N):36.63 INV, -----------... --- D .. ......... o. INV.OUT,35.74 M ................ `3 23 LF 15'HOPE 1 02% 2E -2 C O ............I a. --GR:39.36 INV.OUT z&zis......................................... J 83'LF 30"HOPE @ 0.75% 22'LF 15"HOPE 0 0,49% 223 LF 30"HDPE 0.75% LANGAN Langan Engineering and GR:47.00 C RL-1 2 LF 12"HDPE 01,01% INV.OUT.43.00- Environmental Services,Inc. C UH-18 GR:46.08 CNN i 555 Long Wharf Drive ......... INV.,IN(12"W):40.34 New Haven,CT 06511 INV.'IN(12"S)'.42.77 ....................................................... ........................................ M. INV.IN(30"E):35.68 T:203.562.5771 F:203.789.6142 www.langan.com INV.OUT:35.67 _8�11`12"HDPE 0 1,00% 40 .. ..... C 4011-1-10 GF�4062 Project INV.IN(le N):36.39 CJ :NY.IN(12'SW);36.39 NY,OUT:36.39 C RL-10 40.25 Qk;47.00 1600 OSGOOD STREET _-23 LF 12"HDPE 01.01. X INY.,OUT:43.QQ C AH-26 GR:46.23 NV�IN(127 W):41.17 NV.IN(127 S);42.77 E N OUT:41,17 C-C13-5 C 1�eRD-3 38 L1 GR 39.67 ............. HOPE GR:39.41 NORTH ANDOVER MASSACHUSETTS INV.OUT.36.31 INV.OUT:36.50 C MH 6 -8 LF 12 HDPE 0 100% 1...............1 11, Drawing Title .0� 1,38 LF 12� ee GR ZD O_�O%' 111111111111111111111.111................ ...... C MH-27 HOPE INV. ♦IN(12"SW):36.1 GRi INV IN(15- 36.12 INV.IN(12"S):42.77 --- C RL-11 GRADING AND INV.OUT:42.00 .............. C C13-6 GR:46.2'7, GR:39,67, INV.OUT�3&36 23'LF 12"HDPE 0 l.C)1,.,INV.OUT:43.00 C YRD-4 ERTY�LINE DRAINAGE PLAN IV GR:41.88 C-2 T TI N RAqIN INV.6uT-37.08 7V 0 4 9 ;0 POND C-1 INTERCONNECTION (2)52 L Project NO. Drawing No. A TWO 36 INCH HDPE 40.33INV:36TO-q V Date 'YRD 12�.Jr CR 44 UT. 0.6r 4 'S '9 9, --- ------------ 104 Drawn B CG :315- - MATCHUNE0 y - 40 0 10 25 4 TDO F I I I I I Checked By SCALE IN FEET NLK Sheet 52 of 104 a F,I,,a,,\\Ialgal.-m d talNHOd ta7\140182701\P,.ject DaWGAMOI\Sh-tFflse\G 1040182701-GG101-0101.dwg DaW 7/19f2019 T17 54 Uy.,Ids Slyb Table-La,ga,.stb Layout CG104 1 2 3 4 5 6 7 8 Z _ ---- _ MATCHLINE:00104 Z i 37 TC43 45 :, ............................... MATCHLINE:CG705 BC42 TC43.45_ - ............................... ._ d ._ PROPOSED DISTRIBUTION FAOLf1Y 's ............................... M �1 '-_ \:. C 2 JIFIL I SON R t�s � e�� *322 - - - 'a1_ .: r�...:.. E ............_GR:�...43.00 INV.OUT:'40.00 4 INCH RFC --` PVC UND D-IN .................. ..................................... oo �.,. 0�1:RL-1-0 B-1 RL-9 _ _ --,-- 32.0 OCS C,2-_ _ .... € GR::43.00 € €. GR:43.00 GR:43.00 ;. 9-1,RL-6 1 - , \ s ::-_ :..,. 's GR:43.00 A \ W DOU_-LE CRATE - �f 'INV.OUT.40.b0 ,. ;""'1NV.""OUT.4Ck.00 INV.OUT.40.00 \ ` _ - s INV.OUT:40.00 R:37.0 70 _ 24"DIAMETER ORIFI 3C 0 43.00 *., 4NV.IN(4'PERF E)�3�0 _ „_--_ _ \ TC43.78 i o :, o ti o T(13.6 V.'OUT:40 00: INV.OUT\.48": _0............._...................�.�.......-........................................................ __ -_ o L000�-- _I o _ -_BC42.76 e,O -- ..... .. ru o :€ N o N+, N o 8042.E • ...................... .. ....s................ N. C� SHEET LEGEND TC41.91 _ - e TC42.36 _- _ _ - �„=V- _`� 1 _7= _ „_ e-- :J a- „_ ro � _ �_. o_ t¢ - _ a , e - -= -- CG101 CG03 CG106 _ a I I I I .., ♦ uc- .. Jim 104 LF 15 \ BW 23.15AA TW.41.8 ` -..- Nf k B-1 MH.18 ,.104 LF 1242 PE()0.757 86 ELF 142 DPE.@ 0.74% B-1 MH-14 CG102 L 2 I cc1a4 cc107 I \.. -ESN- <., 104 LF 12'HDPE®0.75%............. GR:42.10:" \ I I GR:42.10 ,,,,,,,,,,,,,, B-1 b1H,15 INV.IN(15 N):35.70 173 LF 18"HOPE®D.75% INY._IN.._(12"E):39.30 GR:92.10 / 4 �f ...........:..... a INV.IN(12"E):39.30 n _ INV. 12"N:36.34�� ) INV.OUT:35.70 INV.SJ 12"E 39.30 \ .'B-1 MH 16 f 7 B-1 CB-8 INV.OUT, 36.3 41 O GR:39.85 -. -- -- ............................. ............... ... _ CG105 CG108 GR:42.10 : , \ INV,., 36.47 :* 104 LF 12"HOPE®0.74% B 1 MH 17 _ e NV.IN(12 N)31.12 B-1 MH-13 I V\ GR 4210 INV.IN(12 E)39.30 // GR:42.10 I I .� INV.IN(12"N):3.90� INV. UT 37.12 1 INV.IN(15"N):34.92 Q TC41.15 40 39.30\�_ -J IN T72"E:39.30 INV.IN(12"E) <° INV. ) B \ �� \ BC40.15 B�1-MH- INV.OUT:3790 -- -1 MH-7 � INV.OU:34.92 _MH-5 _ - GR:3929 € B 8-1 MH-6 1 INV.IN(15"W):36.12 '' ,: ---_ Q �, »> - INV.IN(24"N):3510 'INV.IN(30"N):34.0E INV.IN(30"N):33.0E �,• \ .........NOp f..�F IS" 3g INV.IN(15"N): 6.12 '' INV.IN 16" 35.10 €k a. IN(18"W):33.06 d\ INV. COMPENSATORY .g..... ......................... .............................. - NV.OUT:35.10 ' OMPENSATO .3 ` 204 LF 24' 3g�� 204 LF 30" INV.OUT 4.08 STORAGE HDPE.O.SO;a` 1 04 LF 3D HDPE t�0.5090 HOPE®0,50% \ BW:39.81 ,.. -ELF 18"FIDPE®T.O% ELEVATION(FEET) CUBIC FEET � C38.83 TC38.81 TC39.83 TC38.81 ;;,,,,,,_,10,LF 18 HDPE' 00 TC39.83' TC38.81 TC39.83 TC38.81 22-23 14 ` TW 29.87 10 LF 15 HDPE 0.50J 10 LF 18 HOPE®0.50% \ --BC37.61 --- BC38.83 BC37.8 _ ®�a BC38_ BC37.81•. BC38.83 BC37.81 "`�. 23-24 56 IQ �111\ \ \ \ ..... 24-25 90 A CB-7 BW:39.60,..; BW:39.70 25 26 s5 B-1 CB-5 26 27 ,7 5 INV OUT: � TW.27.91 ...............= GR:37.81 TW.29.00 27-za 7,735 ,... \. .............................. INV.OUT:36.17. -_...... - .. 8-1._CB-8... ............................ ..................................................... INV.OUT:34.13 aGR.ii.8� 28-29 280 29 / GR.37.61 uv INV 3515 �'� 29-30 29,604 �\ ?s.. TOTAL-.2) 1 NCP 30-31 14,134 VOLUMELOOD PLAIN INCREASE 54,414 \ ZONE AE C ZONE (SHADED)14. z COMPENSATORY ~ / /� F Date Description No. PROPERTY �6+ ;,T AGE AREA 1 / - K LINE(TYP) t�s /CjR --/ / - REVISIONS 100'BUFFER AREA 50'NO BUILD BUFFER \ \ - 25'NO DISTURB BUFFER WETLAND LIMITS LANGAI - - Langan Engineering and \ \ Environmental Services,Inc. \ / \ New Long Wharf Drive \ New Haven,CT 06511 APPROXIMATE T:203.562.5771 F:203.789.6142 www.langan.com 200 FT RIVERFRDNT \ `'* EXISTING GRADES TO BE \ \ � Project \ y MAINTAINED WITHIN PAVEMENT \. - F \ DEMOLITION AREAS(TYP) 1600 OSGOOD STREET E A \ \ 30\ / \ -7 NORTH ANDOVER MASSACHUSETTS Drawing Title GRADING AND / ,-- - DRAINAGE PLAN V Project No. Drawing No. 1 \ 2 S fr 140182701 Date 2 0 1 raven y CG 1 05 7/2M2019 D B F 40 0 10 25 40 TDO Checked By SCALE IN FEET NLK Sheet 53 of 104 Filename-\\Iangan.comltlatalNHV\tlata]\140182]01\Projec(Data\CAD\01\SheetF11ea1CIvi11140182]01-CG101-0101.tlwg Dale-]/19/2019 Time-1]'55 User'creynolds Slyle Table Langan.slb Layout CG105 1 2 3 4 5 6 7 8 Q 42 V A SHEET LEGEND MODIFY EXISTING SIGNAL T I CG101 I CG03 I CG106 I °off -- -- -- CG102 CG104 s L-- -- -- N 00 --------- OSGOODSTIMET(ROUTE12S)...................... CG105 CG108 I v L d J - z - - O PAS , SENGER CAR ISO=53 (56 M ` SINGLE-UNIT TRUCK ISD (56 MPHDESIGNSP 00 4..�.. �.. �.. �.. �.�. ,. _ SUBDIVISION 0 PIPE TO REMAIN �.. ``-- LINE { SINGLE-UNIT TRUCK I5D=765'r �. (52 MPH DESIGN SPEED)' ec59.89 66 � PROPERTY ' LINE(TYP) �' ��...... ....... -i BC60.1 --_------- -- 6 \ _MH-15 OR:54.16 ............... r 6N .....................1 ' I 6 (12-N):_4,9.73..�J „ INV.IN(18" 50.3 .. INV.IN 12"N): 1.10 IN U ......,. z`- BC59.30 V.0 -- �ry o C ,. .,..:: _' ^ A-19CB3 --BB6 5 O F AREA Sg c ,.; € `a C59.46 �,..' NV GR:.55.37 �. � I OUT 52.00 50'NO BUILD BUFFER VERT 25•M1IO DISTURB BUFFER i " ADJUST RIM .............. .. �4 CONVERTT MANHOLE r ... -- ELV:58.00 - ADJUST IM' -- WETLAND LIMITS i ELV:57 0 EXISTING 15 INCH R 472 - RAIN GARDENS TO BE INSTALLED _'` �. PIPE TO REMAIN y .....� IN LANDSCAPE ISLANDS,REFER - 38'LF 12"HOPE®2.00% ' - TO LA SERIES FOR LOCATIONS. � - � � A-1 CLCB-9'� F�� t RAIN GARDENS WITHIN-AUL TO BE ��`�� , OR:SS.JS."� --- INSTALLED WITH IMPERMEABLE "" INV.OUT:'"52.50 - i - -- \ A-1 MH-14 LINER (TYP)STRU-369 31 LF 12"HDPE 0 1.007 -" C58.1 OR:54.99 v-- Date Description No. -� � - - A-1 MH-16 � rt -:,. � INV.IN(24"N):48.97 NV.N5(24"_N):39.06 .GRs 5540 `'� 57 INV.IN(12"NE):-51.25 INV.OUT:48.97 INV.OUT:39.06 A-1 MH-21 TF, � . 5 - REVISIONS OR:50.31 INV.IN(12 NW):51.19; EXISTING 42 INCH A-1 CB-7 A-1 MH-22 'INV.N(6"N):48.78 INV.IN(12"E):52.I9 -_ S 00 - OR:53.54 ` -- INV.OUT:51.19 - .- PIPE TO REMAIN OR,55.50 INV.OUT:52.00 ---- INV.OUT:47.31 „ `4. W.OUT:52.00 94 LF 24"HDPE®..0. a 31 LF 12"HOPE C��1.00% C57 HOPE .. 56 56 A-1'CB-8: A-1 F 1 45 LF 12 G 8 -- - -- 322 LF 5"HOPE®1.00% INV.OUa 51. _ r%• " BC55.5 GR:5p$�.�[67 - 57 \ INV.IN(24"N):48.50 �• ) �, 'HOPE 02.DD% / ..................�.........................�................... .:`:: � t ram-. 6 GR 4 a.69 5 D 6 5 �a 6 INV.IN 30„ A 1 MH 17 N.38.38 ........................ . INV.IN(24 OR:51.03 SE).39.26 � k�\hO ^ SEDIMENT F REBAY TH INV.IN 24 E:38.38 INV.IN(15 W).40.56 146 LF 12 - STONE CHECK DAMN `�l/ ( ) FFE=+45.95' INV.IN 12"S:46.86 •> HOPE®1.00% 93 LF 24"HOPE-�0.82% INV.OUT:36.36 INV.IN(12"E):48.00'` � - -'W A MH-8 INV.OUT:40.56 55 BC55.13 BC55 60 A-1 CLCB-6 - s4 4.92 5G \ A NGA V 'a ig EXISTING 3-STORY OFFICE USE TO REMAIN-f133,333 SF FOOTPRINT : 4 INCH PERFORATED 56.4 GR:A 15 OR:43.99 _` OR:53.80 �= GR:52.25 O INV.IN(12"SE):39.93 56 LF 18"HDPE®1.00% `� --NV.OUT.50.50 12 LF 18"PVC UNDERDRAIN ` V A-1 MH-1(WOU FD-8HC) - 055.10 4"DI TER ORIFICE:49.5 HDPE 0 1.00%INV-'47 s' BC.a �( Langan Engineering and ` � INV.IN(4"PERF�j-�T5 • •• INV.IN(15"E):39.93 GR:44.63 A-1 FES-2 -� - - Z Z INV.OUT:39.93 INV.IN(48"NE):38.25 OR:41.67 =; _ 0 1 :u INV.OUT:47.5 Environmental Services,Inc. = A-1 YRD-3 INV.IN(30"N):38.25 INV.IN(18"S):40.00 54 `� 54 -- '. EXISTING 60,INCH RCP 555 Long Wharf Drive OR:43.29 INV.IN(30"W):39.06 ;: _'• -- - 53 52 INV.OUT:40.12 INV.OUT:38.25 A-1.4 EXTENDED DRY DETENTION - ;; 54.37 A-1 CB-10 51 50 \ PLO REMAIN New Haven,CT 06511 BASIN WITH IMPERMEABLE LINER • � INV.OUT:49.01 � 49 ' 't 50"' T:203.562.5771 F:203.789.6142 www.langan.com ,.....: 5 50 LF HOPE 0 2.0O% 51 52 -- -. -- ,R:43.64 -BC52. ,. ... ............... \ .. _ �' - - Project INv.OUT:40.50 53 A 1 FES 3 g g A-12 ....._ GR:44.17 ' S0 A-1--MH-11 y A-1 MH-19 INFILT TION ._� BC45.68 BC52.03 INFILTRATION -.- -- - ';' OR:51..15 --_- - BC45.1 SEDIMENT FOREBAY WITH "' BASIN `� ,NV.IN(15"ft 44.85 � ----- v .:.� .INV:IN 12" ; ,......... .. ........................ ....... 32 LF-12 HOPE®2.00% -� ( ) " ....:....................,........:.. ...,.P.......,..............,.....,.................,..............................,.................,......................................,.......................,.......,.................,.....,._...;....,................ ....,,......�TONE._C+1fClf DAMN............,................... .; -........ 5 IhIV.IN_(12 N).44.85 1600 OSGOOD STREET .. ...... ,.... ".. IN(30 W).47.51 -. A-1 YRD- OUT:44.65 R ,F'. INV.OUT:38.25 w GR:'44.09. S BC45.24 ':: GR:49.89 - GR:50.73 M o INV.IN(12 W):40.38 4 --INV.OUT:47.50 C51.7 INV.OUT:45.79 _ g5 INV.IN(12"S):40.05 ,, -, -- 7.LF 12 E 19 LF 15" INV.OUT:40.05 HDPE®2.00% , HDPE 1. % OR:M 48.29 0R: 23 LF 30" I Q C44.57 HOPE®-211.667 o 14-1 LF 18"';HDPE®1.64% 54 CURB LEAKOFF WITH 5� _; INV.IN(12"S):43. iv^ NORTH ANDOVER MASSACHUSETTS �ti 1-FT PEAGRAVEL INV.IN(12"S):43.39 Zvi ho SEDIMENT FOREBAY WITH 4 INCH PERFORATED V.OUT:43.25 51 LF 30" ,� , A-1 MH-13 TONE CHECK DAMN r ;�` Drawing Title g'I FILTER(TYP) PVC UNDERDRAIN 1 - ®+. I =4 fNCH PERFORATED pE✓ A-1.3 UNDERGROUND HDPE.®342% --- �, HDPE @ 0.88%^w -- ® OR:49.21 - > ';PVC UNDERDRAIN NO OCS A-1-4 INV.:47.5' ��. A-1 YRD-8 as h _{ k DP` RETENTION k� GR:44.75 45.9 A-1 MH-12 OR:48.85 2 INV.IN(12"S):39.55 - �o p d• INV..41.5 `L °l TWO(2)WATER TIGHT _ INV.IN(12 E):39.48--- __ NV.DUT:45.6D GRADING AND 500 LF 60 IN RCP 4"DIAMETER ORIFICE:40.0 49 C48 21 GR:47.85 SO _ INV.OUT:39.46 25 LF 48' g'1 INV:38.25' INV.IN(4"PERF NE):47.5 I N(12"N):40.51 t-� ,52 HDPE GR;A' DRAINAGE PLAN V O 9 LF 48" INV.OUT:39.0 INV.0 HDPE®0.00% �. - 0 LF 12"HDPE®3.74 GR;DIAMETER, 195 LF 12"HOPE®1.00% � �j� 4"DIAMETER.ORIFICE::46.0 Q 5 46 LF 12 INV. " OUT;41. '- v a-26 �R-49-7 9. - A 2 RISER-2 2 BC45.02 A-1 MH-10 -- .-- INV.IN(12"NW).45.46 -. 50 OR.48,65' 21 LF 30 -INV IN(12"--W):45.40 - 1 INV 01lT_45.90: HDPE®2.00% R BC45.4 BC - GR:49.56 INV.OUT:45.40 - Z Project No. Drawing No. GR:47.48 INV.I �.. 20 LF HDPE 0 1.00% CUT AND R 58 LF 24' S Ny pU (12"S):39.18 A-1 CLCB-12 A-1 MH-5 HOPE®1.00% 31 L " A-I1 CLCBTII�OOINV.IN(48"NE):41,54 OR:48.75 35 LF 121Z EXISTING 42 INCH �;'° I 140182701 GR:44.42 120 LF 12"HDPE®1.00% A-1 CB-2 42 LF 12 HOPE®200�47 1 48 GR:47.20 INV. (30"N):37.80 .�INV.OUT HOPE®1. RCP PIPE TO DOG 45.75 q9 4"S:39.48 12 LF 12' HDPE O 1.167 BC4ff.9 Date ) -1 CB-1 GR:44.88 ¢(` INV.OUT:38.03 HOUSE A-1 MH-1 - - INV.OUT:39. 45 HDPE®1.00% GR:43.97 INV.OUT:41.25 ,38 LF:12 48 27 INV.sUZ, HDPE 02.00% MATCHLINE:00106 07/24/2019 a aani no- A-2 YRD-B .. .. , a �.. ,. ,. _ TCFiWNE':CG.to> Drawn By ��O� > -^_�' 'ram _ , F 40 0 10 25 40 TDO Checked By SCALE IN FEET NLK Sheet 54 of 104 Filename'.\\Iangan.-om dtl talNHOdtl ta7\140182701\Project DaWCAD\01\SheetFllee\CIv11040182701-CG101-0101.dwg Dale-7/19/2019 Ti--17'55 User.Grey-lds Style Table Langan.stb Layout CG106 1 2 3 4 5 6 7 8 Z 4 INV.SUZ HOPJi t�2.00% '�^ MATCHUNE:CG106 C45.68 a A-2 YRD-9 BC48.44 B 1 ' TCHLINE• INV.OUT:41.50 GR:44.30 d Dt� XS Dl� XS _ JNV.�#T:42.55 - 99 LF 30' Ei1N,4.45\. HDPE @ 2.437, \ F � y 190 LF 30„ O,o� R�}` -.. A-2 M 24 CONC T� A-2 MH-5 - : ""_' \ ... ... ®0.40 ® GR:45.06 RAIN GARDENSTO BE INSTALLED IN - ' p1 R:;47. A-2 YRD-2 - I V.IN(, E):4 50 A A-2 YRD-7 '�* INV.IN(30'N):40.87 A-2 YRD-4 LANDSCAPE:ISLANDS,REFER T0�LA SERIES FOR OR:44.15 "' d' -" d �1 X �� A- CB-5 = I .:IN(1, 5):4412 f1 OR:43.28 ? INV.IN(18"NE):40.67 OR:44.15 LOCATIONS.RAIN GARDENS'WITHIN AUL TO BE ,,,: ,,,,,,,,,,,,,,,, _ INV.OUT:41.43 INV.OUT:41.60 I INSTALLED WITH IMPERMEABLE LINER TYP I INV.OUT:41.80 �� GR:48.32 iNi�12 N30 g4.1 INV.IN(15"W):40.67 ( ) -: I OUT'44.50 V,- $;, a�o A-2 MH 4- s OR:45 5,8, o DEMOLISH SECTION OF A-2 0L B-4 SHEET LEGEND 202(F ti 1iy® INV.IN(15"W):40.93: EXISTING 48 INCH RCP EXISTING 60 R:47 , a ti„ INCH RCP PIPE 36"RCP m NV.IN(S6 N):39.84' _ -- _ PIPE ! I V.OUT:44.25 p ® pt - a - TO REMAIN ^0 0.40" o. NV.IN(18:NE)40.51 `; ouoi 19 12" RCP @ 1.0 D^ h6�. .oo s T n 'a N q NV.OUT:39.84 "' _ a� J®1 I CG101 I CG03 I CG106 I v a k I 13 LF 12" io w 1 A MH-23 ® ^= R6' J \, a® _ HDPE®1.00% o_ NV.IN 32 S.42.50 0 x �„ r e.........._._ .:- - 19 LF 12"RCP 1.00% ( )43 37 A-2 MH-6 ' `�' c- JNV.IN 12'N): 2.81 46 4fi.2 - 4fi.7 ` GR:45.58.�----� _ -® .67 B;.36 NV.OU 42.50 CG102 CG104 CG107 INV.IN(16"E):42.0 ` 20/ti INV.IN(1B"SW):42.00 `: A-2 CB-2 O a �c <F \ A-2.CB-3 I I t\P 3 INV.OUT:42.00 -y - OR,45 75 6 - - o A 2 MH 3 N 00 A° GR:44.89 0 A-2 MH-10 S� .40q OR:45.22 "� �� '74 LF 18"RCP @ 0.50%� =- ��INV:OU 43.50 OO CURE LEAKOFF WITH - 0 - INV.OUT:43.00 OR:45.50 h INV.IN 15'N 41.53 0• 1�FT PEAGF3P,VEL � ; „. ,;..,.A-2 YRD-3 .......,.........�.............,_,.... ,............... .........,....., ( »W): ..: A-2 YRD-6 ° 1 - INV.IN(36 N).40.33 ` GR:44.36.: " :- INV.IN 36 N:39,04 ® OR:44.56 _ CG105 CG108 FILTER TYP) _ A-2 MH-12 t� ,. ( ) ��r" 13 L 12"HD E @ 1. % I I Nun- - +-_ ,a INV.IN(18"E):39,83 Q<v INV.OUT:42.37 ®'., INV.OUT:40.33 n INV.OUT:39.04 0/ INV IN(33"N)-41.39 ro : T/.--. '•� w T 72.28 Q • INS'.IN(12'W):42.90 A-2 YRD-1 - - INV.OUT:41.39 GR:44.44 _ o BVV: 9R ry B A-z Mii--9 Nu.0.uT:.4i.so t� k® =1 c4s.63 �i .9 L - :GR;4560 y •�: A 2)kJH;22 Lu INV,IN;(�6"N):39.83 '..."'.", _ A-2 YRD-5 ..._..._..,.. :. 2*,p t ,�-,` GR<44.49 : � Q GR:44.42 ;NV.IN:(1 W):42.90 :. 27 LF 15" iO �TNV.IN 30 E)�4174 d INV.OUT:;39.83 ® 115 LF 48'" INV.OUT:41.80 72 LF 33" �78 LF 36" 54 LF 36" 63 LF 36. ;;,. HDPE'@ 1.00% �� ''� �INV.#N 12 S),4173 :. " HOPE @ 0.50% HDPE @ 0.81% HDPE @ O 80%- HDPE @ OAO%-- RCP @ 0 38% 23 - == Ao I11T417 _ t i A 2MH- 9 pZ E® BC45.7 ................�......:.,... GR 45.94...... ...... ....._. QP BC46.1 C45.8 .93 ., ...... ..__...... .. .. .. ...... Nv IN(2a E).40.77 ®, ... • INV IN(42 NE)3666 C4300�. A-2 RL-7 0 INV OUT 3866 I OR:47.00 C46.10- INV.OUT:41.96 .. m .. C45.38 "�� 44.97 OR:44.31 W. A-2 MH-13 o w 60 LF 12" 60 LF 12' 60 LF 12 60:LF'€2"; -` TW:46.31 INV.OUT:41.90 OR: 46.57 o HDPE @ 1.017 HDPE @ 1.01% - yOpe<� F- -_ ;.' A-2 FES=4 INV.IN(30"W):41.75 x 0 0 CO HDPE @ 1 01% <; HOPE.0 1.017 ®36 z � -, � � GR:41.50 INV.IN(15"NW):41.75 BC42.93 QS `z' ' ,� m INV.OUT:41.75 Oy 1 - _ ' A-2 MH-11 A- - - - A-2 RL-6 2 CB 6 A-2 RL-5 GR:45.66 A-2 RL-3 A-2 RL 2 � ' '' - _ "" C43.51 GR::42.58 OR:47.00 OR:47.00 INV.IN(36"N):40.76 OR:47.00 GR:47.00 W ".' BC4342, A INV.OUT:42.05 INV.OUT:43.50 INV.IN(12"W):42.90 INV.OUT:43.50 INV.OUT:43.50 A-2 MH-1 - i Tr M 31 4F 12";HDPE 3,18 INV.OUT:40.76 A :..' INV IN(48'NE):822 _ ......x�: A-23f$-S +0 R1y OR: SEDIMENT FOREBAY A-2.2 A-2 RL-4 A-Z RL-1 OR:47.00 ,; .TC43.08 _- GR:�44.71 -- INV.OUT:43.50 INV.OUT:,394T,_" 151 LF 18' - C42.06 ro HDPE @ 0-5% - ,` C 63 LF 48"RC 4@ 0.35% CONTRACTOR SHALL REFER TO ARCHITECTURAL PLANS AND SPECIFICATIONS FOR ACTUAL LOCATIONS 's :\` A^2 MH-8///1 42 OF ALL UTILITY ENTRANCES TO INCLUDE SANITARY SEWER LATERALS,DOMESTIC WATER SERVICE, .; ... - :42.62 ELECTRICAL,TELECOM AND GAS SERVICE,ROOF DRAINS,AND ALL OTHER UTILITIES.CONTRACTOR J iNV:N(36..N):38.65 41 ' SHALL COORDINATE INSTALLATION IN SUCH A MANNER AS TO AVOID CONFLICTS AND TO ENSURE '� `° ��"�'INV.IN(18"=,N):38.65 PROPER DEPTHS ARE ACHIEVED AS WELL AS COORDINATING WITH THE REGULATORY AGENCY AS TO INV>OUT:38.65 : 38 THE LOCATION AND SCHEDULING OF CONNECTIONS TO THEIR FACILITIES. = ItL 37 tig LF 24"X 48° _ _ BOK JLVERT @ 0 507 A 2 FES 1 - ...__.��.. :GR:38.00::- 1; BC43.00 ®urw U N _ _ OR?8.002 39.00 TS GRI.47-95,`. CO -.' 25 WTTLAND NO DISTUIRB PROPOSED DISTRIBUTION FACILITY INV.,OUT 4000',. SEDIMENT REBA A-2.1 - BUFFER Date Description NO, ±823,522 SF FOOTPRINT *3,836AM GSF 82 LF 12 HDPE @ 0.70' 27 F WI E VE STATED _ 50 FT`.NO BUILD ' FFE=*47.00' - A-2 MH-2Q`, �ILTE STRI A-2.1 - :GR 42.3€.. „ 2 FT WDE PEA h® 1 =BUFFER __ REVISIONS INV IN;.(12"'N).39.3 GRAVEL FILTER STRIP N 100 FT BUFFER INS IN(12"NE):39.3� AREA „ JV.OUT:39.38', __ EXISTING 72 INCH RCP .;,. PIPE TO REMAIN ;;. CO '-- . .,........ .: INV.OUT 40.OfJ,.. - 61 LF 12"HDPE 61DD%' m MH A-Z - o- ..... ...... ... '' c.. ....... ..._.... D NV.IN{ :N):.,8.3,. ............. ............,. 121. m :_'..� ............ ............... .. RdV.IN(12 E).,39. INV.OUT' €: \. ........ .' v1 ,...... .........., 39.1 ?................ . , ;, ....._......:.. ....... ...... EXISTING 6F 3FT BOX ........ A-2 RL-13 ......_..._..\ OR:42.9. CULVERT TO REAAIN M I ` 1.................. .............................. ............. .................'...................... .....;.........................................:,...................'s. INV.OUT:4T100 .:o-- INFILTRATION:,: I/ 61 LF 12'HDPE @ 1-14 ....0,.;... _ : M BASIN A-2 I I" ( LANGAI -A 2 MH=14. - M -OR:42.34�' _ iv k® JNV iN(b2'W):38.83 Langan Engineering and INV IN 12"N:39.9 - 'I ( ) 6 "I "> OR: B.00 ^ „ Environmental Services,Inc. INV.IN(12"E):38.63 -=- � OR:36.Q0 y � n a INV.-OUT:38.53 ro M 555 Long Wharf Drive A-2 RL-8 = 166 LF 15' OR:42.95 CO HDPE @ M.50% M ^�� MHO ^ \' \ New Haven,CT 06511 INV.OUT:40.00 61 LF 12"HDPE @ 1.00% `� � T:203.562.5771 F:203.789.6142 www.langan.com MH-15 _ g o - OR:42.34 y 37.0 _ Project -- - INV.IN(12"N)39.39 U U INV.IN(12"W):39.11' INV.OUT.39.11 � A�2 RL-s 37°OR. 1600 OSGOOD STREET r F- INV.OUT..40,00 61€F 12"HDPE @ 1_00% OR 42.34 I INV.IN(12"NWj:39.39_ INV.IN(12";N):39.39, o NORTH ANDOVER MASSACHUSETTS INV.OUT:39.39 _o (2)30"OUTLET PIPES @ 2% Drawing Title ... ...;- .. A-2 RL-10 APPROXIMATE 200 FT GR:42.95 1 RIVERFRON7 INV.OUT:40.00 61 LF 12"HDPE @ 1.00% \ G RA DING A ND 82 LF 12'HDPE @ 0.74% -" - OCS A 2 DRAINAGE PLAN VII -- -- --- -- ---- ---- ---- -- A-2 RL-11 -- N W DOU LE CRATE 100'BUFFER AREA GR:42. cR:38.25 _ 33 34 - - - - INV.OUT:. .00 / (2)12"DIAMETER ORI ICE:37.0 __ 35 36 l INV_0 T(2)30":32.3 -' ...... e _ _ .b.._ SHUT OFF VALVE ON OUTLET GR:38.00 - 36 37 Project No. Drawing No. .. 219 LF'24"X 48_ - - - 140182701 ' - BOX CULVERT @ 0.50%- a A® EMERGENCY SPILLWAY ' � - Date HATCHET'S:CG107 DM - 07/24�2019 HATCHET'S 03108 A 2 RL-12 41 0 Az 12 Drawn By F 40 0 10 25 40 TDO Checked By SCALE IN FEET NLK Sheet 55 of 104 Filename'.\\Iangan.comltlatalNHV\tlata]\140182]01\Project Data\CAD\01\SheetFllealClvil1140182701-CG101-0101.tlwg Dale-]/19/2019 Time-1]'56 User.creyn lds Slyle Table'L-g-stb Layout CG107 1 2 3 4 5 6 7 8 Q MATCHUNE•CG107 MATCHUNE:00708 A-2 RL-12 41 CONTRACTOR SHALL REFER TO ARCHITECTURAL PLANS AND SPECIFICATIONS FOR ACTUAL LOCATIONS GR:43.67 EMERGENCY SPILLWAY 's OF ALL UT1U`Y ENTRANCES TO INCLUDE SANITARY SEWER LATERALS,DOMESTIC WATER SERVICE, INV.OUT:39.38 57 LF 24"X 48" „, 41 ELECTRICAL,TELECOM AND GAS SERVICE,ROOF DRAINS,AND ALL OTHER UT1UIlES.CONTRACTOR BOX CULVERT®0.49% - - 40 SHALL COORDINATE INSTALLATION IN SUCH AMANNER AS TO AVOID CONFLICTS AND TO ENSURE A-2 MH-18 N�, PROPER DEPTHS ARE ACHIEVED AS WELL AS COORDINATING WITH THE REGULATORY AGENCY AS TO GR:42.44 / --. """' """""""""'. ................ ............ THE LOCATION AND SCHEDULING OF CONNECTIONS TO THEIR FACILITIES. INV.IN(48"N):39.1 I + _ 1 PROPOSED DISTRIBUTION FACILITY INV.OUT:39.10 ±823,522 SF FOOTPRINT e ............................... *3,836,000 GSF B-1 RL-1 40 I FIFE.f47.00' GR:42.95 I ...................................................... ' 8-1 RL-4 B-1 RL-3 B-1 RL-2 INV.OUT:40.00A ...................................... ' GR:43.00 GR:43.00 - A GR:43.00 INV.OUT:40.00 W.OUT:40.00 INV.OUT:40.00 Fj)F fF N �"z / N o o L; 43.00 o ry GG BG42.76 r- SHEET LEGEND e _= e sa' o uF% = no a 3g M aUG--UGaT G = I - I N - ....................... I CG101 CG03 CG106 42 B-1 H 1 B-1 MH-12 104 LF 18" B-1 MH-11 104 LF 18" o ...._....._�`3.. I CG102 I CG104 I CG107 I GR:3 GR:42.09 HOPE®0.75% BE GR:42.11 HDPE®0.74% 75 LF 18" �� mod' -� -INV.IN INV.IN 2"S):30.16 MAINTAINED WITHIN"14):30.16 EXISTING INV.IN(18"N):33.62 INV.IN(18"N):32.84 w MA PAVEMENT INV.IN 12"E:39.30 HDPE®0.76% ®+ I - V, DEMOLITION AREAS(TYP) n INV.IN(12"E):39.30 ( ) o w ............................... IN OUT: .18 L N INV,OUT:33.62 INV.OUT:32.84 41 B-1 MH-10 c 1 I CG105 I CG108 I GR:42.09 B-1 MH-9 ................................. "J.. `\ 50 INV.IN(18"N):32.07 GR:42.14 .....::.............................................. INV.IN(12"E):39.30 INV.IN(18"N):31.50 - I INV.OUT: .07 L � J INV.IN(12"E):39.29 ,� I 27 24"HDPE®.5% lTj ""' Z 0 INV.OUT.31.50 QO �?, I. I � a�- _ B 4 B-1 MH-4 m�.............. •50 = GR:6.0ISS 2 INV.IN(36"N):32.04 - INV.IN(24 S):30.30 40...' A A p [' p�/ Q INV.IN 18"W:32.02 ........ I 09 V.IN(1530.):31.00 X \ COMPENSATORY d INV.OUT:32.0 39 y y O / STORAGE 39 300 LF 42" 69 LF 4 - B-DOUBLE CB 04 LF 36'HDPE()0.50 HDPE 0.50% HDPE @ 0. % , �- _I GR: .99 .............................. FJ INV 0 30.82 3 , -� 10 LF 15 HDPE @ 1 00OIL `9 \ ~ "1 ELEVATION(FEET) CUBIC FEET TC39.63 10 LF 18"HDPE 01.00% TC38.811. TC39.83 TC38.81 TC37.79t7�L-F'15 \ \ 22-23 14 BC38.83 BC37.81 BC38.83 - 23-24 56 24-25 90 30 35 3336 25-26 185 B-1 CB-3 B 1 MH-3 '' 2' 26-27 2315 GR 37.12 B-1 CB-2 BW:5 7$ : F\. \; HDPE®0.49% �- GR:37.81 -- ...INV.OUT:-.32.12 -- TW:3 \� \ 27-28 7,735 -- ---B-1 TES-2`- --INV IN N):30:54 GR:36.83 B-1 CB-1 5 c'Q rs B \ 28-29 280 \ GR:30.00 INV.IN(15 W):33.00 INV.OUT:33.10 GR:30.0FES-0 GR:35.83 103 LF 24" 3 \'S' F 9� 29-30 24,134 INV.OUT:30.54 GR:30.00 IN.OUT:31.10 HDPE®0.50% g \ \FO 30-31 14,134 �� \ TOTAL FLOOD PLAIN \ VOLUME INCREASE 54,414 30 AE C \�GR:32.50 W DOUBLE GRATE `11 \ / E \ " 1 B 1 EXTENDED DRY COMPENSATORY \ (3)18"DIAMETER ORIFICE:30.0 = 1 --A® 31 DETENTION BASIN STORAGE AREA 2 \ INV_OUT(2)24"' .8 SEDIMENT FOREBAY WITH \\\ J STONE CHECK DAMN (2)24"OUTLET PIPES @ 17 -��z _ � EXISTING GRADES TO BE \ - \ \ / /a' 0.'' %\ Date Description No. MAINTAINED WITHIN PAVEMENT \ / I I I DEMOLITION AREAS(TYP) \ ` / / REVISIONS 100'BUFFER AREA \ / 50'NO BUILD BUFFER I I LA _25'NO DISTURB BUFFER D WETLAND LIMITS 100'BUFFER AREA \ ----- 0 � 50'NO BUILD BUFFER \ - LANGAN J I I APPROXIMATE / 25'NO DISTURB BUFFER \ \ Langan Engineering and 200 FT RIVERFRDNT / \ l\ � // Environmental Services,Inc. WETLAND LIMITS � 555 Long Wharf Drive \ \ \ New Haven,CT 06511 � T:203.562.5771 F:203.789.6142 www.langan.com /oO' COMPENSATORY A .\ _ STORAGE AREA 3 \ Project 1600 OSGOOD STREET NORTH ANDOVER MASSACHUSETTS m � � ! � / Drawing Title GRADING AND E - \(sygoe � TO p4 .0 DRAINAGE PLAN O VIII Project No. Drawing No. 140182701 Date 07/24�2019 CG108 \ Drawn B Y F 40 0 10 25 40 TDO Checked By SCALE IN FEET NLK Sheet 56 of 104 Filename-\\Iangan.comltlatalNHV\tlata]\140182]01\Projec(Data\CAD\01\SheetF11ea1CIvi11140182]01-CG101-0101.tlwg Dale-]/19/2019 Time-1]'56 User.creyn lds Slyle Table'L-gan.stb Lay-t CG108 2 3 4 5 6 7 8 B FAPPROXIMATE�17 FINISHED GRADE 3-1/2"x 3/8 (TYP.) 1/4 /2"x 2 1/2"x 1/2 A A A 1/4 1/4 DETAIL"D" 30'PVC ELBOW 4'-4" S4x9.5 ROOF LEADER GASKETED"WYE"INSERT SEE GRADING& DIMENSION DRAINAGE PLANS� DETAIL"C" AS SHOWN (TYP.) T 3-J T-10 1/2 DRAINAGE PIPE SEE GRADING& DRAINAGE PLANS PLAN .0 (TYP.) NORMAL FINISHED GRADING, 5/8 DIA.HOLES GRADING TO BE VARIED CLASS"A"CONCRETE FOR 2-#4 BARS ADJACENT TO CATCH BASIN POURED I PLACE OR 7'-4"LONG(TYP.) DETAIL"E" AS DIRECTED PRECAST CONCRETE UNIT. 2-#4 BARS,T-4"LONG EACH SIDE ALTERNATE CONSTRUCTION .8-5/1 3'1-3/4" 3'1-3/4" 8-5 6" 5" OF TYPE 11 TOP 3/i6 / 1-3/i6 \10-13/18" 1'6-3/B" I10-13/16" B 1/2 STEEL BEAM S4x9.5 3'-9"LONG ® ROOF LEADER CONNECTION MINIMUM DEPTH,UNLESS SPECIFICALLY ORDERED N.T.S. FOR ALTERNATE____--- OTHERWISE,UNDER /W., SEE DETAIL D SEE DETAIL"E" ////----TR VELWAY V-7-1/2" UNDER UNTRAVELED 2-#4 BARS,3'-10'�'LONG/ AREAS O'S' 12" EACH SIDE 12" 5'-10 1/2" WHEN THIS DIMENSION EXCEEDS 10 FEET,CATCH BASIN WILL BE —CLASSSIFIED AS TYPE"C-L"CATCH J/ 1��2�L 3 1 1/4 S4x9.5 7DJAC' S DIRECTED 1_ 1 q2 81,4�" 8" 14" BASIN DOUBLE GRATE TYPE 11 3/3" J__ OVER 10 FT.DEEP. 7-13/16"-T2LI 1 3/16- 8 1/4- 5 1/8" L ELEVATION OF FLOW LINE AS 7-13/16" SHOWN ON PLANS OR AS In DIRECTED BY THE ENIGINEER Al' 2P DRAINAGE OPENINGS IN 4 WALL 15 7/16' 1/2"GRADE W STEEL AT OR IMMEDIATELY ABOVE THE PERVIOUS BACKFILL ABOVE THIS > BOTTOM OF THE PERVIOUS -ELEVATION,MAX.DEPTH 3'-0" 14" REINFORCEMENT BACKFILL. C ----- ----------- (FOR INSTALLATION IN PRE-CAST CONCRETE) BELOW THE TOP OF THE SECTION A-A io STRUCTURE. 6'-6 1/2 CLASS"A"CONCRETE 3'-0" COPOLYMER POLYPROPYLENE PLASTIC POURED IN PLACE OR 7'-10 1/2 PRECAST CONCRETE UNIT. r 4'-4" 13-13 SECTION A-A SECTION 3 PLASTIC MANHOLE STEP N.T.S. FIGURE FOUND IN MDC SANITARY AND STORM DRAIN CONNECTIGN MANUAL-FIGURE 60 NOTES: 1.WALLS OF ALL CATCH BASINS OVER 10 FT.DEEP TO BE INCREASED TO 12" Date Description No. THICKNESS,INSIDE DIMENSIONS TO REMAIN THE SAME. 2.ALL STEEL,EXCEPT REINFORCING BARS,SHALL BE GALVINIZED REVISIONS IN ACCORDANCE WITH M.06.03. 3.ALL BARS SHALL HAVE 2"COVER. TYPE"CL"DOUBLE CATCH BASIN MANHOLE FRAME&COVER TO N.T.S. BE CAMPBELL FOUNDRY PATTERN NUMBER 1221 ADJUST TO GRADE WITH BRICK OR APPROVED EQUIV. DR BLOCK STRETCHER COURSE 2' 8"MIN, CLASS C'PRECAST REINFORCED CONCRETE STD.MH STEP COPOLYMER R MANHOLE ECCENTRIC CONE POLYPROPYLENE PLASTIC 4'CONE WELDED WIRE FABRIC(TYP.) MIN. L A NGA N Langan Engineering and Environmental Services,Inc. 2"MIN. LILTING HOLES(TYP.) (FILL WITH MORTAR) 555 Long Wharf Drive RISER New Haven,CT 06511 VARIES --CONCRETE MANHOLE RISERS& '.4"(TYP.) STANDARD PRECAST CLASS"C" 7 TRANSITION SECTIONS 1',2',3', T:203.562.5771 F:203.789.6142 www.langan.com 1D.5" OR 4'LENGTHS AS REQ'D WITH 5- 1a.5" 5. CLASS"A"CONCRETE 8.5"V-6" V-15"8.5' RISER 0-RING JOINTS Project POURED IN PLACE OR VARIES -6"WALL PRECAST CONCRETE UNIT 1, PERVIOUS 4'-O"DIA.— WATERTIGHT GASKET OR SEALER(TYP.) 1600 OSGOOD STREET BACKFILL ABOVE THIS 14�-QOD I I ELEVATION BASE 4'MIN. MAX DEPTH 2' 7' 7' KNOCKOUTS FOR PIPES 8. 8" 4'.[M I MIN. FROM TOP& BOTTOM OF BASE E B A—] B El BRICK,CLASS"A"CONCRETE, NORTH ANDOVER MASSACHUSETTS MASONRY CONCRETE UNITS. M Drawing Title WHERE BRICK OR MASONRY 6"IN. CONCRETE UNITS ARE USED, CORBELLING WILL BE PERMITTED. 6' �-7"(TYP.) PIPE INVERT MAXIMUM CORBEL TO BE 3'%NO GRADING & FYP E=WAGR GRATE E PROJECTION SHALL EXTEND 3/4"PROCESSED CLASS"A" 3/4"PROCESSED AGGREGATE BASE COURSE AGGREGATE BASE CONCRETE OR COMPACTED SUBGRADE CLASS,A E OF LIMITS NOTED BY CONCRETE OR COURSE PRECAST UNIT A PRECAST UNITJ777 'PROCESSED NOTES: DRAINAGE DETAILS AGGREGATE BASE COURSE 1 DIAMETER OF MANHOLE SHALL BE REVIEWED BY THE CONTRACTOR TO DETERMINE A LEGEND OF STANDARD MANHOLE DIMENSIONS WITH RESPECT To PROPOSED PIPE SIZES,NUMBER AND GEOMETRTY.OVER SIZE MANHOLES SHALL BE INSTALLED IF MINIMUM 6"WALL PLAN VIEW SECTION A-A SECTION B-B DIMENSION BETWEEN PIPES IS NOT PROVIDED. 2.MANHOLES SHALL BE STANDARD PRECAST CONCRETE UNITS AND SHALL BE DESIGNED AND CONSTRUCTED BY THE MANUFACTURER TO SUPPORT TRUCK H-20 LOADING. Project No. Drawing No. TYPE"CL"SINGLE CATCHBASIN STORM MANHOLE 140182701 N.T.S. 5 N T s Date 07/2,4/2019 CG501 Drawn By F RJS Checked By NLK Sheet 57 of 104 Data:7/19/2019 Ti1756 J,.r:y,,.Id,Style T,bh:Lg.,tb L,y:CG50I 2 3 4 5 6 7 8 ALTERNATE CONSTRUCTION WITH SEE DETAIL"A"ABOVE FULL CURB BACK TO BE USED AT LOCATIONS ADJACENT TO CROSS SLOPE AS EXISTING OR PROPOSED CURB PER CROSS SECTION DETAILS OF CURB INLET SHOWN ABOVE 7- 1'-B" 1--6- 7- 2"10"10* 0*1"10"2' CLASS"A"CONCRETE 2- 2- 1/2' POURED IN PLACE OR WARNING TAPE CLEANOUT FRAME&COVER 12" SURFACE COURSE L�—�= I PRECAST CONCRETE UNIT A A MANUFACTURED BY NEENAH FOUNDRY 9 L . . . . CO.OR #4 REBAR—t E - PIPE APPROVED EQUIV. 2'-8". V MINIMUM DEPTH UNLESS SPRING LINE 4'LONG 3'- SPECIFICALLY ORDERED OF P A OTHERWISE UNDER 111 Wil -" 1.5"-L PERVIOUS COMPACTED FILL(ON SITE BACKFILL TRAVELWAY V-7 1/2" MATERIAL IS SUITABLE)IN '-0"MIN T 4" UNDER UNTRAVELED 3" ELEVATION 6"LIFTS ABOVE THIS (MAX)TO GRADE STORM PIPE MAX DEPTH 2' 7' 7- 4 NOTE: T• To CROSS CURB RE PER CROSS SLOPE AS OSS SECTION 1/2 3 -a- 5" 12"MIN THE CONTRACTOR SHALL PROVIDE 2'-O"X2'-0"X6" B 5'-4"BRICK,CLASS"A"CONCRETE, ALL APPROPRIATE AND NECESSARY CONCRETE PAD 8.— § MASONRY CONCRETE UNITS. PLAN FITTING AND ADAPTORS. WHERE BRICK OR MASONRY CONCRETE UNITS ARE USED, /\0 K CORBELLING WILL BE 1. 1D* PERMITTED.MAXIMUM CORBEL TO BE 3".NO PROJECTION 3/4"STONE BASE-/8"1 CLASS"A SHALL EXTEND INSIDE OF TOP OF TO BE USED WHEN STANDARD WYE CONCRETE 0-R7 -k\LIMITS NOTED BY GRATE 0 7' CURB INLET IS BRANCH CLEANOUT LINE TO BE 8"DIAMETER.PIPE MATERIAL PRECAST UNIT 16' CONSTRUCTED IN A TO BE EITHER P.V.C.OR HOPE.BUT SHOULD BE 34" LINE OF PLAIN SECTION A—A SECTION B—B BA/ PROCESSED AGGREGATE SE COURSE #4 REBAR CONCRETE CURBING, CONSISTENT WITH MAIN SEWER MATERIAL DOWELED CONCRETE NOTES: 4'-0"'LONG CURBING,OR STONE COMPACTED CRUSHED STONE 1.WHEN CATCH BASIN IS SET IN CONCRETE PAVEMENT 1-1/2-O/C CURBING,6"HIGH OR AS DIRECTED BY THE THE 1/2 SLOPE ON THE TOP SURFACE SHALL BE GEOTECHNICAL ENGINEER COMPACTED CHANGED TO MATCH ADJOINING PAVEMENT. DETAIL"A" SUBGRADE 2.IN SANDY SOILS,APPLY DAMP-PRODFING ON ALL 4 NOTES: WALLS. BEDDING MATERIAL TO BE REVISED AS NECESSARY TO COMPLY WITH PIPE MANUFACTURER'S RECOMMENDATIONS. B TYPE"C"SINGLE CATCHBASIN STORM PIPE BEDDING SANITARY CLEANOUT0 N.T.S. C Date Description No. REVISIONS D LANGAN Langan Engineering and Environmental Services,Inc. MAX 3:1 SLOPE,TYP 555 Long Wharf Drive 50 /-(SEE GRADING(PLAN) 50 New Haven,CT 06511 10 FT WIDE TOP OF BASIN MAINTENANCE STRIP MAX 3:1 SLOPE,TYP P Lu 17 FT WIDE SEDIMENT (SEE GRADING PLAN) Lu T:203.562.5771 F:203.789.6142 www.langan.com 22 FT WIDE SEDIMENT FOREBAY SPILLWAY FOREBAY SPILLWAY ELEV.:3.0 ILL. 7/ Project z z 0 40 40 0 INFILTRATION BASIN -BOTTOM OF BASIN ELEV.:33.0' 1600 OSGOOD STREET 16 FT WIDE SEDIMENT FOREBAY SEDIMENT FOREBAY BOTTOM OF FOREBAY ELEV:38.0' BOTTOM OF FOREBAY ELEV.:38.0' Lu Lu E 30 30 IMPERMEABLE LINER TO BE INSTALLED BELOW ELEVATION 37.0' NORTH ANDOVER MASSAMILISETTS Drawing Title DISTANCE(FEET) 0 100 200 300 400 500 600 625 LIP—ROPOSED ELEV(FEET) 41.01 38.00 39.36 37.00 37.00 36.00 33.00 33.00 33.00 36.60 38.00 38.00 43.14 GRADING AND DRAINAGE DETAILS Project No. Drawing No. 140182701 Date 07/2412019 CG502 Drawn By F RJS Checked By NILIK Sheet 58 Of 104 Filename.\\I,,g,,.w,,\d,t,NNHOd,t,7\140182701\P,.ject D-:7/19/2019 Ti-17 56 U-,-yn.ld.Style Table:L-g.,-tb L.y..t:CG502 2 3 4 5 6 7 8 42 MAX 3:1 SLOPE,TYP /-(SEE GRADING!PLAN) 50 50 10 FT WID E TOP OF BASIN MAINTENANCE STRIP MAX 3:1 SLOPE.TYP (SEE GRADING PLAN) Lu Lu 17 FT WIDE SEDIMENTNT Lu /22 FT WIDE SEDIMENT FOREBAY SPILLWAY FOREBAY SPILLWAY Lu LL ELEV.:39.0 LLEV.: ILL. A z z 4 40 0 INFILTRATION BASIN N BOTTOM OF BASIN ELEV.:33.0' -J 113 FT WIDE SEDIMENT FOREBAY SEDIMENT FOREBAY -J ILLI BOTTOM OF FOREBAY ELEV:38.0' BOTTOM OF FOREBAY ELEV.:38.0' Lu 30 30 IMPERMEABLE LINER TO BE INSTALLED BELOW ELEVA TION 37.0' .F- DISTANCE(FEET) 0 100 200 300 400 500 600 625 PROPOSED ELEV(FEET)1 41.01 38.00 39.36 37.00 37.00 36.00 33.00 33.00 33.00 36.60 38.00 38.00 43.14 WET POND A-2 PROFILE N.T.S B SEE GRADING AND DRAINAGE PLANS Jk WQV 6"MIN EL. 8.MIN OUTLET CONTROL STRUCTURE, LOWEST ORIFICE SET AT WQV EL. 8'CHAIN LINK FENCE-\ BI ORETENTION SOIL MEDIA,SEE NOTES EDGE OF PAVEMENT TRUCK COURT FLUSH CURB FLOW TO SEDIMENT FOREBAY WHEEL STOP OF INFILTRATION BASIN A-2L NOTES: C 1. MATERIALS TO BE USED IN THE BASIN PLANTING AREAS SHALL BE INSPECTED AND DETERMINED TO BE FREE FROM PURPLE LODSESTRIFE(LYTHRUM SALICARIA),COMMON REED VEGETATED FILTER STRIP (PHRAGMITES AUSTRALIS),OR REED CANARYGRASS(PHALARIS ARUNDINACEA). 2. BASIN SOIL MIX SHALL BE PLACED A MINIMUM OF 18"DEEP. 3- COMPACTION OF BASINS AREAS AND REQUIRED BACKFILL SHALL BE MINIMIZED TO THE MAXIMUM EXTENT FEASIBLE BY THE USE OF EXCAVATION HOES,LIGHT EQUIPMENT WITH TURF z 1LL TYPE TIRES,OR WIDE TRACK EQUIPMENT. 4- IF COMPACTION DOES OCCUR IN BASIN,THE COMPACTED ZONE SHALL BE TILLED TO REFRACTURE AT LEAST 12"OF NATURAL SOIL BEFORE BACKFILLED WITH SOIL MIX. TRUCK2 FT WIDE PEAGRAVEL FILTER 5. WHEN BACKFILLING BASIN,PLACE SOIL IN LIFTS OF 12-18"AND USE LIGHT EQUIPMENT ONLY WHEN GRADING WITHIN THE BASIN.HEAVY EQUIPMENT CAN BE USED AROUND THE COURT PERIMETER OF THE BASIN. PAVEMENT SECTION 6. ALLOW SOIL MIXTURE TD SETTLE NATURALLY THROUGH RAIN EVENTS OR PRESOAK AFTER PLACEMENT. 7. SEED BASIN WITH BASIN SEED MIX(CUSTOM)OR NEW ENGLAND EROSION CONTROL/RESTORATION MIX(FOR DETENTION BASINS AND MOIST SITES)AT 1 LB/1245 S.F. 8. SEED SHOULDERS OF BASINS WITH NEW ENGLAND CONSERVATION/WILDLIFE MIX AT 1 LB/1743 S.F.OR"NO MOW"LAWN SEED MIX ACCORDING TO SUPPLIER'S RECOMMENDATIONS FOR SITE PREPARATION AND PLANTING SPECIFICATIONS. 9. PLANTS AND SEED MIXES SHALL BE FIELD LOCATED BY A WETLAND SCIENTIST. Date Description No. FILTER STRIP TYPICAL INFILTRATION BASIN DETAIL REVISIONS 2 N.T.S 3 N.T.S D SEE LANDSCAPE PLAN FOR RAIN GARDEN SURFACE TREATMENT PROJECTION (BOTTOM OF GARDEN) DISTANCE FROM OVERFLOW 'MA TO CURB CUT TO BE 1 DIPOLE WALL AND SLAB THICKNESSES ARE NOT TO OVERFLOW DRAIN SEE GRADING AND MINIMUM 6" SCALE. FLUSH CURB DRAINAGE PLANS RAIN GARDEN PLANTINGS 4 FLUSH CURB R 3 INTERNATIONAL FORA BOTTOM OFSTRUG UBE ELEVATION A I N 2.CONTACTHiDISTANCE FROM TOP OFRAVEL TO OVERFLOW TO A P ORTOS-INGFIRSTL A NGA MAX.AX.SLOPE MAX.SLOPE DEFENSEMANHOLE. 3 BE MINIMUM 3" FE'-L 3 CURB 4 3 CONTRACTOR TO CONFIRM Langan Engineering and RIM PIPE INVERTS,PIPE❑DIA. FLOW AND PIPE ORIENTATION PRIOR Environmental Services,Inc. TO.S.:10.99 it[3.35D.1(MINIMUM) m NOTE ADDITIONAL HEIGHT MAYBE FLOW TO RELEASE OF UNIT TO FABRICATION. 555 Long Wharf Drive ASPHALT ------ AM01✓ 11J1 REQUIRED DEPENDING ON PIPE SIZE XA��1 2 New Haven,CT 06511 V V! FINISH GRA AT 3 AT �J NO�,�j T:203.562.5771 F:203.789.6142 www.langan.com E�4 PAVEMENT A �T PLAN VIEW PIPE INVERTS:7.40ft[2.255.1(MINIM Ei� 01 T, 3"DEPTH,2"to 3"SIZE DECORATIVE STONE 'T 111171 117" LILT BOTTOM OF INTERNALS:2.53 ft[.772 m] DIAMETER `@ FIRST DEFENSE HIGH CAPACITY ALONG CURB CUTS SHALL EXTEND THE WIDTH OF \ \ \ \ ,- - iT T\ K\\\�\\��\TTTTL LITT\T\ THE CURB CUT FROM THE EDGE OF PAVEMENT TO L V THE RAIN GARDEN FSLOOR AS SHOWNEE LANDSCAPING IN RAIN SUMP:DD ft[.ODD nn]- GARDEN PLANTING PLAN, PLANS 'T, 1600 OSGOOD STREET BIORETENTION SOIL MIX DEPTH 36" ITT SECTION A-A 85%COARSE CLEAN SAND,12%WELL DECAYED > HYDRO FRAME AND WOOD CHIP OR LEAF COMPOST,3%ORGANIC SOIL COVER I(INC OTHERSUDED) E (ORGANIC SOIL SHALL HAVE NO MORE THAN 2%CLAY). GRADE R BY CONTRACTOR SHALL SUBMIT BIDRETENTION SOIL MIX MARAFI 140N FILTER AS REQUIRED TO PROJECT LANDSCAPE ARCHITECT/ENGINEER FABRIC PRODUCT SPECIFICATION. OR OWNER'S REPRESENTATIVE FOR REVIEW 3/4"CRUSHED CLEAN I PEAK HYDRAULIC FLOW.50.0�%(1415 11�) PARTS LIST NORTH ANDOVER MASSACHUSETTS PRIOR TO INSTALLATION 2.MIN SEDIMENT STORAGE CAPACITY.2.8yd.(2.1 On.rn.) ITEM OTY SIZE(in)SIZE(-) DESCRIPTION STONE 8"DEPTH MINIMUM 3 OIL STORAGE CAPACITY.10T2 gal.(3793 it-) 1 1 96 2 00 I.E.PRECAST MANHOLE Drawing Title 6"PERFORATED PIPE 4 MAXIMUM INLET/OUTLET PIPE DIAMETERS.48 in.(1200 mm) -2 1 INTERNAL COMPONENTS 5 THE TREATMENT SYSTEM SHALL USE AN INDUCED VORTEX (INVERT 3"ABOVE T SEPARATE POLLUTANTS FROM STORM WATER RUNOFF. PRE-INSTALLED) Pnilli ME OUG? - TO 1(207)756-62fl0 OUTLET PIPE) 6.0 110 110 MICRON 80%TSS REMOVAL 6.00 cH,(169.9 D,)(NJDEP TEST PROTOCOL) 3 1 3D 750 FRAME AND COVER(ROUND) '1(207)756,3212 GRADING AND 7.NUDEP CERTIFIED 80%TSS REMOVAL AT 7.52 ds(212.9 h) -4 1 48(MAX)1200(MAX)OUTLET PIPE(BY OTHERS) hyd I-. NOTE:ALL RAIN GARDENS IN AUL ZONE TO HAVE IMPERMEABLE LINER IMPERMEABLE LINER IN AUL 5 1 48(MAX)1200(MAX)INLET PIPE(BY OTHERS) ZONE ONLY GENERAL NOTES NOT---N. 1 General ti...lf-it-ip-ifid-ing, DRAINAGE DETAILS 2.The di.�.t,�,.f the i,l.t.ndoutlet pip.�m.yb.�.m..th.�48". 3.M.Itipi.nI.t pip-ip-ibl.(referq i.f.L t.OL-t pl -DEBTASSY 4.InI.Y-t.t pip..,gle can vary to ith d.-g-R-L,(AT.,to project ph-) S. pipe d 16.Larger sediment storage capacity mr be ProAded fifth a deeper s-p depl. 1&2019 HYDRO INTERNATION 1 r. UP RAIN GARDEN RAIN GARDEN Project No. Drawing No.140182701 N.T.S 5 N.T.S Date 07/24/2019 CG503 Drawn By F CDR Checked By NLK Sheet 59 Of 104 Filename:\\l,npn.,.,,\d,t,NNH\d,t,7\140182701\Prje,t D.IA 7/1 912 01 9 Ti-17 57 U.--yn.li Slyli,Table:L.ng....flb T.y.H:CG503 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix B-Copy of 2017 CGP (Note: The 2017 CGP is available at httgs://www.epa.qov/ngdes/epas-2017-construction- aeneral-permit-cnp-and-related-documents) EPA SWPPP Template, Version 2.1 2017 Construction General Permit (CGP) (as modified) National Pollutant Discharge Elimination System General Permit for Discharges from Construction Activities (as modified) In compliance with the provisions of the Clean Water Act, 33 U.S.C. §1251 et. seq., (hereafter CWA), as amended by the Water Quality Act of 1987, P.L. 100-41 "operators" of construction activities (defined in Appendix A) that meet the requirements of Part 1.1 of this National Pollutant Discharge Elimination System (NPDES) general permit, are authorized to discharge pollutants in accordance with the effluent limitations and conditions set forth herein. Permit coverage is required from the "commencement of construction activities" (see Appendix A) until one of the conditions for terminating CGP coverage has been met (see Part 8.2). This permit becomes effective on June 27, 2019. This permit and the authorization to discharge expire at 1 1:59pm, February 16,2022. Signed and issued this 14th day of May 2019 Signed and issued this 14th day of May 2019 Deborah Szaro, Charles W.Maguire, Acting Regional Administrator, EPA Region 1. Director, Water Division, EPA Region 6. Signed and issued this 14th day of May 2019 Signed and issued this 14th day of May 2019 Jeff Gratz, Jeffery Robichaud, Deputy Director, Water Division, EPA Region 2. Director, Water Division, EPA Region 7. Signed and issued this 14th day of May 2019 Signed and issued this 14th day of May 2019 Jose C. Font, Darcy O'Connor, Acting Director, Caribbean Environmental Director, Water Division, EPA Region 8. Protection Division, EPA Region 2. Signed and issued this 14th day of May 2019 Signed and issued this 14th day of May 2019 Catharine McManus, Tomas Torres, Deputy Director, Water Division, EPA Region 3. Director, Water Division, EPA Region 9. Signed and issued this 14th day of May 2019 Signed and issued this 14th day of May 2019 Jeaneanne M. Gettle, Daniel D. Opalski, Director, Water Division, EPA Region 4. Director, Water Division, EPA Region 10. Signed and issued this 14th day of May 2019 Joan M.Tanaka, Acting Director, Water Division, EPA Region 5. 2017 Construction General Permit (CGP) (as modified) CONTENTS 1 How to Obtain Coverage Under the Construction General Permit(CGP)..................................1 1.1 Eligibility Conditions....................................................................................................................... 1 1.2 Types of Discharges Authorized..................................................................................................2 1.3 Prohibited Discharges...................................................................................................................4 1.4 Submitting your Notice of Intent (NOI) ......................................................................................4 1.5 Requirement to Post a Notice of Your Permit Coverage........................................................6 2 Technology-Based Effluent Limitations...........................................................................................6 2.1 General Stormwater Control Design, Installation, and Maintenance Requirements.........7 2.2 Erosion and Sediment Control Requirements...........................................................................8 2.3 Pollution Prevention Requirements........................................................................................... 14 2.4 Construction Dewatering Requirements................................................................................. 18 3 Water Quality-Based Effluent Limitations......................................................................................18 3.1 General Effluent Limitation to Meet Applicable Water Quality Standards........................ 18 3.2 Discharge Limitations for Sltes Discharging to Sensitive Waters........................................... 19 4 Site Inspection Requirements........................................................................................................20 4.1 Person(s) Responsible for Inspecting Site.................................................................................20 4.2 Frequency of Inspections...........................................................................................................20 4.3 Increase in Inspection Frequency for Sites Discharging to Sensitive Waters......................21 4.4 Reductions in Inspection Frequency........................................................................................21 4.5 Areas that MUST Be Inspected..................................................................................................22 4.6 Requirements for Inspections....................................................................................................22 4.7 Inspection Report........................................................................................................................23 4.8 Inspections By EPA.......................................................................................................................23 5 Corrective Actions.........................................................................................................................24 5.1 Conditions Triggering Corrective Action.................................................................................24 5.2 Corrective Action Deadlines.....................................................................................................24 5.3 Corrective Action Required by EPA.........................................................................................25 5.4 Corrective Action Report...........................................................................................................25 6 Staff Training Requirements...........................................................................................................25 7 Stormwater Pollution Prevention Plan (SWPPP) ............................................................................26 7.1 General Requirements...............................................................................................................26 7.2 SWPPP Contents..........................................................................................................................26 7.3 On-Site Availability of Your SWPPP............................................................................................32 7.4 SWPPP Modifications ..................................................................................................................32 Page 2017 Construction General Permit (CGP) (as modified) 8 How to Terminate Coverage.........................................................................................................33 8.1 Minimum Information Required in NOT....................................................................................33 8.2 Conditions for Terminating CGP Coverage............................................................................34 8.3 How to Submit Your NOT............................................................................................................34 8.4 Deadline for Submitting the NOT..............................................................................................34 8.5 Effective Date of Termination of Coverage............................................................................34 9 Permit Conditions Applicable to Specific States, Indian Country Lands, or Territories.............35 Appendix A: Definitions and Acronyms...........................................................................................A-1 Appendix B: Permit Areas Eligible for Coverage and EPA Regional Addresses........................... B-1 Appendix C: Small Construction Waivers and Instructions............................................................C-1 Appendix D: Eligibility Procedures Relating to Threatened & Endangered Species Protection. D-1 Appendix E: Historic Property Screening Process............................................................................E-1 Appendix F: List of Tier 3, Tier 2, and Tier 2.5 Waters.........................................................................F-1 Appendix G: Buffer Requirements................................................................................................... G-1 Appendix H: 2-Year, 24-Hour Storm Frequencies...........................................................................H-1 Appendix I: Standard Permit Conditions........................................................................................... 1-1 Appendix J: Notice of Intent(NOI) Form and Instructions...............................................................J-1 Appendix K: Notice of Termination (NOT) Form and Instructions..................................................K-1 Appendix L: Suggested Format for Request for Chemical Treatment............................................L-1 Page ii 2017 Construction General Permit (CGP) (as modified) 1 HOW TO OBTAIN COVERAGE UNDER THE CONSTRUCTION GENERAL PERMIT(CGP) To be covered under this permit, you must meet the eligibility conditions and follow the requirements for obtaining permit coverage in this Part. 1.1 ELIGIBILITY CONDITIONS 1.1.1 You are an "operator" of a construction site for which discharges will be covered under this permit. For the purposes of this permit and in the context of stormwater discharges associated with construction activity, an "operator" is any party associated with a construction project that meets either of the following two criteria: a.. The party has operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications; or b. The party has day-to-day operational control of those activities at a project that are necessary to ensure compliance with the permit conditions. Where there are multiple operators associated with the same project, all operators must obtain permit coverage.' Subcontractors generally are not considered operators for the purposes of this permit. 1.1.2 Your site's construction activities: a.. Will disturb one or more acres of land, or will disturb less than one acre of land but are part of a common plan of development or sale that will ultimately disturb one or more acres of land; or b. Have been designated by EPA as needing permit coverage under 40 CFR 122.26(a)(1)(v) or 40 CFR 122.26(b)(15)(ii); 1.1.3 Your site is located in an area where EPA is the permitting authority (see Appendix B); 1.1.4 Discharges from your site are not: a. Already covered by a different NPDES permit for the same discharge; or b. In the process of having coverage under a different NPDES permit for the same discharge denied, terminated, or revoked.2, 3 1.1.5 You are able to demonstrate that you meet one of the criteria listed in Appendix D with respect to the protection of species that are federally listed as endangered or threatened under the Endangered Species Act (ESA) and federally designated critical habitat; 1.1.6 You have completed the screening process in Appendix E relating to the protection of historic properties; and If the operator of a "construction support activity" (see Part 1.2.1 c) is different than the operator of the main site, that operator must also obtain permit coverage.See Part 7.1 for clarification on the sharing of permit-related functions between and among operators on the same site and for conditions that apply to developing a SWPPP for multiple operators associated with the same site. 2 Parts 1.1.4a and 1.1.4b do not include sites currently covered under the 2012 CGP that are in the process of obtaining coverage under this permit, nor sites covered under this permit that are transferring coverage to a different operator. 3 Notwithstanding a site being made ineligible for coverage under this permit because it falls under the description of Parts 1.1.4a or 1.1.4b, above, EPA may waive the applicable eligibility requirement after specific review if it determines that coverage under this permit is appropriate. Page 1 2017 Construction General Permit (CGP) (as modified) 1.1.7 You have complied with all requirements in Part 9 imposed by the applicable state, Indian tribe, or territory in which your construction activities and/or discharge will occur. 1.1.8 For "new sources" (as defined in Appendix A) only: a.. EPA has not, prior to authorization under this permit, determined that discharges from your site will cause, have the reasonable potential to cause, or contribute to an excursion above any applicable water quality standard. Where such a determination is made prior to authorization, EPA may notify you that an individual permit application is necessary. However, EPA may authorize your coverage under this permit after you have included appropriate controls and implementation procedures designed to bring your discharge into compliance with this permit, specifically the requirement to meet water quality standards. In the absence of information demonstrating otherwise, EPA expects that compliance with the requirements of this permit, including the requirements applicable to such discharges in Part 3,will result in discharges that will not cause, have the reasonable potential to cause, or contribute to an excursion above any applicable water quality standard. b. Discharges from your site to a Tier 2, Tier 2.5, or Tier 3 water4 will not lower the water quality of the applicable water. In the absence of information demonstrating otherwise, EPA expects that compliance with the requirements of this permit, including the requirements applicable to such discharges in Part 3.2, will result in discharges that will not lower the water quality of such waters. 1.1.9 If you plan to add "cationic treatment chemicals" (as defined in Appendix A) to stormwater and/or authorized non-stormwater prior to discharge,you may not submit your Notice of Intent (NOI) unless and until you notify your applicable EPA Regional Office (see Appendix L) in advance and the EPA Regional Office authorizes coverage under this permit after you have included appropriate controls and implementation procedures designed to ensure that your use of cationic treatment chemicals will not lead to discharges that cause an exceedance of water quality standards. 1.2 TYPES OF DISCHARGES AUTHORIZED5 1.2.1 The following stormwater discharges are authorized under this permit provided that appropriate stormwater controls are designed, installed, and maintained (see Parts 2 and 3): a.. Stormwater discharges, including stormwater runoff, snowmelt runoff, and surface runoff and drainage, associated with construction activity under 40 CFR 122.26(b)(14) or 122.26(b)(15)(i); b. Stormwater discharges designated by EPA as needing a permit under 40 CFR 122.26(a)(1)(v) or 122.26(b)(15)(ii); 4 Note:Your site will be considered to discharge to a Tier 2,Tier 2.5, or Tier 3 water if the first water to which you discharge is identified by a state, tribe,or EPA as a Tier 2,Tier 2.5, or Tier 3 water. For discharges that enter a storm sewer system prior to discharge, the first water of the U.S. to which you discharge is the waterbody that receives the stormwater discharge from the storm sewer system.See list of Tier 2,Tier 2.5, and Tier 3 waters in Appendix F. 5 See "Discharge" as defined in Appendix A. Note:Any discharges not expressly authorized in this permit cannot become authorized or shielded from liability under CWA section 402(k) by disclosure to EPA,state, or local authorities after issuance of this permit via any means,including the Notice of Intent (NOI) to be covered by the permit, the SWPPP, or during an inspection. Page 2 2017 Construction General Permit (CGP) (as modified) c. Stormwater discharges from construction support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) provided that: i. The support activity is directly related to the construction site required to have permit coverage for stormwater discharges; ii. The support activity is not a commercial operation, nor does it serve multiple unrelated construction sites; iii. The support activity does not continue to operate beyond the completion of the construction activity at the site it supports; and iv. Stormwater controls are implemented in accordance with Part 2 and Part 3 for discharges from the support activity areas. d. Stormwater discharges from earth-disturbing activities associated with the construction of staging areas and the construction of access roads conducted prior to active mining. 1.2.2 The following non-stormwater discharges associated with your construction activity are authorized under this permit provided that, with the exception of water used to control dust and to irrigate vegetation in stabilized areas, these discharges are not routed to areas of exposed soil on your site and you comply with any applicable requirements for these discharges in Parts 2 and 3: a. Discharges from emergency fire-fighting activities; b. Fire hydrant flushings; c. Landscape irrigation; d. Water used to wash vehicles and equipment, provided that there is no discharge of soaps, solvents, or detergents used for such purposes; e. Water used to control dust; f. Potable water including uncontaminated water line flushings; g. External building washdown, provided soaps, solvents, and detergents are not used, and external surfaces do not contain hazardous substances (as defined in Appendix A) (e.g., paint or caulk containing polychlorinated biphenyls (PCBs)); h. Pavement wash waters, provided spills or leaks of toxic or hazardous substances have not occurred (unless all spill material has been removed) and where soaps, solvents, and detergents are not used. You are prohibited from directing pavement wash waters directly into any water of the U.S., storm drain inlet, or stormwater conveyance, unless the conveyance is connected to a sediment basin, sediment trap, or similarly effective control; i. Uncontaminated air conditioning or compressor condensate; j. Uncontaminated, non-turbid discharges of ground water or spring water; k. Foundation or footing drains where flows are not contaminated with process materials such as solvents or contaminated ground water; and I. Construction dewatering water discharged in accordance with Part 2.4. 1.2.3 Also authorized under this permit are discharges of stormwater listed above in Part 1.2.1, or authorized non-stormwater discharges listed above in Part 1.2.2, commingled with a Page 3 2017 Construction General Permit (CGP) (as modified) discharge authorized by a different NPDES permit and/or a discharge that does not require NPDES permit authorization. 1.3 PROHIBITED DISCHARGES6 1.3.1 Wastewater from washout of concrete, unless managed by an appropriate control as described in Part 2.3.4; 1.3.2 Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; 1.3.3 Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; 1.3.4 Soaps, solvents, or detergents used in vehicle and equipment washing or external building washdown; and 1.3.5 Toxic or hazardous substances from a spill or other release. To prevent the above-listed prohibited non-stormwater discharges, operators must comply with the applicable pollution prevention requirements in Part 2.3. 1.4 SUBMITTING YOUR NOTICE OF INTENT(NOI) All "operators" (as defined in Appendix A) associated with your construction site,who meet the Part 1.1 eligibility requirements, and who seek coverage under this permit, must submit to EPA a complete and accurate NOI in accordance with the deadlines in Table 1 prior to commencing construction activities. Exception: If you are conducting construction activities in response to a public emergency (e.g., mud slides, earthquake, extreme flooding conditions, widespread disruption in essential public services), and the related work requires immediate authorization to avoid imminent endangerment to human health, public safety, or the environment, or to reestablish essential public services, you may discharge on the condition that a complete and accurate NOI is submitted within 30 calendar days after commencing construction activities (see Table 1) establishing that you are eligible for coverage under this permit. You must also provide documentation in your Stormwater Pollution Prevention Plan (SWPPP) to substantiate the occurrence of the public emergency. 1.4.1 Prerequisite for Submitting Your NOI You must develop a SWPPP consistent with Part 7 before submitting your NOI for coverage under this permit. 1.4.2 How to Submit Your NOI You must use EPA's NPDES eReporting Tool (NeT) to electronically prepare and submit your NOI for coverage under the 2017 CGP, unless you received a waiver from your EPA Regional Office. To access NeT, go to,.h..:.r.--[ s: . n s s-� irirn ir..... is h it s,..... . . . con ............... . .fir . Ji...............! ..::::.:............... ..Ji.............li t i.................. ................ir............... Waivers from electronic reporting may be granted based on one of the following conditions: 6 EPA includes these prohibited non-stormwater discharges here as a reminder to the operator that the only non-stormwater discharges authorized by this permit are at Part 1.2.2.Any unauthorized non-stormwater discharges must be covered under an individual permit or alternative general permit. Page 4 2017 Construction General Permit (CGP) (as modified) a. If your operational headquarters is physically located in a geographic area (i.e., ZIP code or census tract) that is identified as under-served for broadband Internet access in the most recent report from the Federal Communications Commission; or b. If you have limitations regarding available computer access or computer capability. If the EPA Regional Office grants you approval to use a paper NOI, and you elect to use it, you must complete the form in Appendix J. 1.4.3 Deadlines for Submitting Your NOI and Your Official Date of Permit Coverage Table 1 provides the deadlines for submitting your NOI and the official start date of your permit coverage,which differ depending on when you commence construction activities. Table 1 NOI Submittal Deadlines and Official Start Date for Permit Coverage. Type of Operator NOI Submittal Deadline' Permit Authorization Date8 Operator of a new site (i.e., a site At least 14 calendar days before 14 calendar days after EPA where construction activities commencing construction notifies you that it has commence on or after February 16, activities. received a complete NOI, 2017) unless EPA notifies you that your authorization is delayed Operator of an existing site (i.e., a site No later than May 17,2017. or denied. with 2012 CGP coverage where construction activities commenced prior to February 16, 2017 New operator of a permitted site (i.e., At least 14 calendar days before an operator that through transfer of the date the transfer to the new ownership and/or operation replaces operator will take place. the operator of an already permitted construction site that is either a "new site"or an "existing site" Operator of an "emergency-related No later than 30 calendar days You are considered project" (i.e., a project initiated in after commencing construction provisionally covered under response to a public emergency activities. the terms and conditions of (e.g., mud slides, earthquake, this permit immediately, and extreme flooding conditions, fully covered 14 calendar disruption in essential public services), days after EPA notifies you for which the related work requires that it has received a immediate authorization to avoid complete NOI, unless EPA imminent endangerment to human notifies you that your health or the environment, or to authorization is delayed or reestablish essential public services) denied. 1.4.4 Modifying your NOI 7 If you miss the deadline to submit your NOI, any and all discharges from your construction activities will continue to be unauthorized under the CWA until they are covered by this or a different NPDES permit. EPA may take enforcement action for any unpermitted discharges that occur between the commencement of construction activities and discharge authorization. 8 Discharges are not authorized if your NOI is incomplete or inaccurate or if you are not eligible for permit coverage. Page 5 2017 Construction General Permit (CGP) (as modified) If after submitting your NOI you need to correct or update any fields, you may do so by submitting a "Change NOI" form using NeT. Waivers from electronic reporting may be granted as specified in Part 1.4.1. If the EPA Regional Office has granted you approval to submit a paper NOI modification,you may indicate any NOI changes on the same NOI form in Appendix J. When there is a change to the site's operator, the new operator must submit a new NOI, and the previous operator must submit a Notice of Termination (NOT) form as specified in Part 8.3. 1.4.5 Your Official End Date of Permit Coverage Once covered under this permit, your coverage will last until the date that: a. You terminate permit coverage consistent with Part 8; or b. You receive permit coverage under a different NPDES permit or a reissued or replacement version of this permit after expiring on February 16, 2022; or C. You fail to submit an NOI for coverage under a revised or replacement version of this permit before the deadline for existing construction sites where construction activities continue after this permit has expired. 1.5 REQUIREMENT TO POST A NOTICE OF YOUR PERMIT COVERAGE You must post a sign or other notice of your permit coverage at a safe, publicly accessible location in close proximity to the construction site. The notice must be located so that it is visible from the public road that is nearest to the active part of the construction site, and it must use a font large enough to be readily viewed from a public right-of-way.9 At a minimum, the notice must include: a. The NPDES ID (i.e., permit tracking number assigned to your NOI); b. A contact name and phone number for obtaining additional construction site information; C. The Uniform Resource Locator (URL) for the SWPPP (if available), or the following statement: "If you would like to obtain a copy of the Stormwater Pollution Prevention Plan (SWPPP) for this site, contact the EPA Regional Office at [include the appropriate CGP Regional Office contact information found at . 0 . n es con t ct-us-sl r ter#r i n ];" and d. The following statement "If you observe indicators of stormwater pollutants in the discharge or in the receiving waterbody, contact the EPA through the following we bsite: h,.h,.h s: in f irc ins in it it�,..... in iir in ire in-tal viola-tions." 2 TECHNOLOGY-BASED EFFLUENT LIMITATIONS You must comply with the following technology-based effluent limitations in this Part for all authorized discharges.10 9 If the active part of the construction site is not visible from a public road, then place the notice of permit coverage in a position that is visible from the nearest public road and as close as possible to the construction site. 10 For each of the effluent limits in Part 2, as applicable to your site,you must include in your SWPPP (1) a description of the specific control(s) to be implemented to meet the effluent limit; (2) any applicable design specifications; (3) routine maintenance specifications;and (4) the projected schedule for its (their) Page 6 2017 Construction General Permit (CGP) (as modified) 2.1 GENERAL STORMWATER CONTROL DESIGN, INSTALLATION, AND MAINTENANCE REQUIREMENTS You must design, install, and maintain stormwater controls required in Parts 2.2 and 2.3 to minimize the discharge of pollutants in stormwater from construction activities. To meet this requirement, you must: 2.1.1 Account for the following factors in designing your stormwater controls: a.. The expected amount, frequency, intensity, and duration of precipitation; b. The nature of stormwater runoff and run-on at the site, including factors such as expected flow from impervious surfaces, slopes, and site drainage features. You must design stormwater controls to control stormwater volume, velocity, and peak flow rates to minimize discharges of pollutants in stormwater and to minimize channel and streambank erosion and scour in the immediate vicinity of discharge points; and c. The soil type and range of soil particle sizes expected to be present on the site. 2.1.2 Design and install all stormwater controls in accordance with good engineering practices, including applicable design specifications.I' 2.1.3 Complete installation of stormwater controls by the time each phase of construction activities has begun. a. By the time construction activity in any given portion of the site begins, install and make operational any downgradient sediment controls (e.g., buffers, perimeter controls, exit point controls, storm drain inlet protection) that control discharges from the initial site clearing, grading, excavating, and other earth-disturbing activities.12 b. Following the installation of these initial controls, install and make operational all stormwater controls needed to control discharges prior to subsequent earth- disturbing activities. 2.1.4 Ensure that all stormwater controls are maintained and remain in effective operating condition during permit coverage and are protected from activities that would reduce their effectiveness. a.. Comply with any specific maintenance requirements for the stormwater controls listed in this permit, as well as any recommended by the manufacturer.13 b. If at any time you find that a stormwater control needs routine maintenance,you must immediately initiate the needed maintenance work, and complete such work by the close of the next business day. installation/implementation.See Part 7.2.6. 11 Design specifications may be found in manufacturer specifications and/or in applicable erosion and sediment control manuals or ordinances.Any departures from such specifications must reflect good engineering practices and must be explained in your SWPPP.You must also comply with any additional design and installation requirements specified for the effluent limits in Parts 2.2 and 2.3. 12 Note that the requirement to install stormwater controls prior to each phase of construction activities for the site does not apply to the earth disturbance associated with the actual installation of these controls. Operators should take all reasonable actions to minimize the discharges of pollutants during the installation of stormwater controls. 13 Any departures from such maintenance recommendations made by the manufacturer must reflect good engineering practices and must be explained in your SWPPP. Page 7 2017 Construction General Permit (CGP) (as modified) c. If at any time you find that a stormwater control needs repair or replacement,you must comply with the corrective action requirements in Part 5. 2.2 EROSION AND SEDIMENT CONTROL REQUIREMENTS You must implement erosion and sediment controls in accordance with the following requirements to minimize the discharge of pollutants in stormwater from construction activities. 2.2.1 Provide and maintain natural buffers and/or equivalent erosion and sediment controls when a water of the U.S. is located within 50 feet of the site's earth disturbances. a.. Compliance Alternatives. For any discharges to waters of the U.S. located within 50 feet of your site's earth disturbances, you must comply with one of the following alternatives: i. Provide and maintain a 50-foot undisturbed natural buffer; or ii. Provide and maintain an undisturbed natural buffer that is less than 50 feet and is supplemented by erosion and sediment controls that achieve, in combination, the sediment load reduction equivalent to a 50-foot undisturbed natural buffer; or iii. If infeasible to provide and maintain an undisturbed natural buffer of any size, implement erosion and sediment controls to achieve the sediment load reduction equivalent to a 50-foot undisturbed natural buffer. See Appendix G, Part G.2 for additional conditions applicable to each compliance alternative. b. Exceptions. See Appendix G, Part G.2 for exceptions to the compliance alternatives. 2.2.2 Direct stormwater to vegetated areas and maximize stormwater infiltration and filtering to reduce pollutant discharges, unless infeasible. 2.2.3 Install sediment controls along any perimeter areas of the site that will receive pollutant discharges.14 a.. Remove sediment before it has accumulated to one-half of the above-ground height of any perimeter control. b. Exception. For areas at "linear construction sites" (as defined in Appendix A) where perimeter controls are infeasible (e.g., due to a limited or restricted right-of-way), implement other practices as necessary to minimize pollutant discharges to perimeter areas of the site. 2.2.4 Minimize sediment track-out. a. Restrict vehicle use to properly designated exit points; b. Use appropriate stabilization techniques15 at all points that exit onto paved roads. 14 Examples of perimeter controls include filter berms,silt fences,vegetative strips,and temporary diversion dikes. 15 Examples of appropriate stabilization techniques include the use of aggregate stone with an underlying geotextile or non-woven filter fabric, and turf mats. Page 8 2017 Construction General Permit (CGP) (as modified) i. Exception: Stabilization is not required for exit points at linear utility construction sites that are used only episodically and for very short durations over the life of the project, provided other exit point controls16 are implemented to minimize sediment track-out; c. Implement additional track-out controls» as necessary to ensure that sediment removal occurs prior to vehicle exit; and d. Where sediment has been tracked-out from your site onto paved roads, sidewalks, or other paved areas outside of your site, remove the deposited sediment by the end of the same business day in which the track-out occurs or by the end of the next business day if track-out occurs on a non-business day. Remove the track-out by sweeping, shoveling, or vacuuming these surfaces, or by using other similarly effective means of sediment removal. You are prohibited from hosing or sweeping tracked-out sediment into any stormwater conveyance, storm drain inlet, or water of the U.S.18 2.2.5 Manage stockpiles or land clearing debris piles composed, in whole or in part, of sediment and/or soil: a.. Locate the piles outside of any natural buffers established under Part 2.2.1 and away from any stormwater conveyances, drain inlets, and areas where stormwater flow is concentrated; b. Install a sediment barrier along all downgradient perimeter areas;19 c. For piles that will be unused for 14 or more days, provide cover20 or appropriate temporary stabilization (consistent with Part 2.2.14); d. You are prohibited from hosing down or sweeping soil or sediment accumulated on pavement or other impervious surfaces into any stormwater conveyance, storm drain inlet, or water of the U.S. 2.2.6 Minimize dust. On areas of exposed soil, minimize dust through the appropriate application of water or other dust suppression techniques to control the generation of pollutants that could be discharged in stormwater from the site. 2.2.7 Minimize steep slope disturbances. Minimize the disturbance of "steep slopes" (as defined in Appendix A). 16 Examples of other exit point controls include preventing the use of exit points during wet periods; minimizing exit point use by keeping vehicles on site to the extent possible;limiting exit point size to the width needed for vehicle and equipment usage; using scarifying and compaction techniques on the soil; and avoiding establishing exit points in environmentally sensitive areas (e.g., karst areas;steep slopes). 17 Examples of additional track-out controls include the use of wheel washing, rumble strips, and rattle plates. 18 Fine grains that remain visible (i.e., staining) on the surfaces of off-site streets, other paved areas, and sidewalks after you have implemented sediment removal practices are not a violation of Part 2.2.4. 19 Examples of sediment barriers include berms, dikes, fiber rolls,silt fences,sandbags,gravel bags,or straw bale. 20 Examples of cover include tarps, blown straw and hydroseeding. Page 9 2017 Construction General Permit (CGP) (as modified) 2.2.8 Preserve native topsoil, unless infeasible.21 2.2.9 Minimize soil compaction.22 In areas of your site where final vegetative stabilization will occur or where infiltration practices will be installed: a.. Restrict vehicle and equipment use in these locations to avoid soil compaction; and b. Before seeding or planting areas of exposed soil that have been compacted, use techniques that rehabilitate and condition the soils as necessary to support vegetative growth. 2.2.10 Protect storm drain inlets. a.. Install inlet protection measures that remove sediment from discharges prior to entry into any storm drain inlet that carries stormwater flow from your site to a water of the U.S., provided you have authority to access the storm drain inlet;23 and b. Clean, or remove and replace, the protection measures as sediment accumulates, the filter becomes clogged, and/or performance is compromised. Where there is evidence of sediment accumulation adjacent to the inlet protection measure, remove the deposited sediment by the end of the same business day in which it is found or by the end of the following business day if removal by the same business day is not feasible. 2.2.11 Control stormwater discharges, including both peak flowrates and total stormwater volume, to minimize channel and streambank erosion and scour in the immediate vicinity of discharge points. 24. 2.2.12 If you install a sediment basin or similar impoundment: a.. Situate the basin or impoundment outside of any water of the U.S. and any natural buffers established under Part 2.2.1; b. Design the basin or impoundment to avoid collecting water from wetlands; c. Design the basin or impoundment to provide storage for either: i. The calculated volume of runoff from a 2-year, 24-hour storm (see Appendix H); or ii. 3,600 cubic feet per acre drained. 21 Stockpiling topsoil at off-site locations, or transferring topsoil to other locations,is an example of a practice that is consistent with the requirements in Part 2.2.8. Preserving native topsoil is not required where the intended function of a specific area of the site dictates that the topsoil be disturbed or removed. For example,some sites may be designed to be highly impervious after construction, and therefore little or no vegetation is intended to remain, or may not have space to stockpile native topsoil on site for later use, in which case,it may not be feasible to preserve topsoil. 22 Minimizing soil compaction is not required where the intended function of a specific area of the site dictates that it be compacted. 23 Inlet protection measures can be removed in the event of flood conditions or to prevent erosion. 24 Examples of control measures that can be used to comply with this requirement include the use of erosion controls and/or velocity dissipation devices (e.g., check dams,sediment traps),within and along the length of a stormwater conveyance and at the outfall to slow down runoff. Page 10 2017 Construction General Permit (CGP) (as modified) d. Utilize outlet structures that withdraw water from the surface of the sediment basin or similar impoundment, unless infeasible;25 e. Use erosion controls and velocity dissipation devices to prevent erosion at inlets and outlets; and f. Remove accumulated sediment to maintain at least one-half of the design capacity and conduct all other appropriate maintenance to ensure the basin or impoundment remains in effective operating condition. 2.2.13 If using treatment chemicals (e.g., polymers, flocculants, coagulants): a.. Use conventional erosion and sediment controls before and after the application of treatment chemicals. Chemicals may only be applied where treated stormwater is directed to a sediment control (e.g., sediment basin, perimeter control) before discharge. b. Select appropriate treatment chemicals. Chemicals must be appropriately suited to the types of soils likely to be exposed during construction and present in the discharges being treated (i.e., the expected turbidity, pH, and flow rate of stormwater flowing into the chemical treatment system or area). c. Minimize discharge risk from stored chemicals. Store all treatment chemicals in leak- proof containers that are kept under storm-resistant cover and surrounded by secondary containment structures (e.g., spill berms, decks, spill containment pallets), or provide equivalent measures designed and maintained to minimize the potential discharge of treatment chemicals in stormwater or by any other means (e.g., storing chemicals in a covered area, having a spill kit available on site and ensuring personnel are available to respond expeditiously in the event of a leak or spill). d. Comply with state/local requirements. Comply with applicable state and local requirements regarding the use of treatment chemicals. e. Use chemicals in accordance with good engineering practices and specifications of the chemical provider/supplier. Use treatment chemicals and chemical treatment systems in accordance with good engineering practices, and with dosing specifications and sediment removal design specifications provided by the provider/supplier of the applicable chemicals, or document in your SWPPP specific departures from these specifications and how they reflect good engineering practice. f. Ensure proper training. Ensure that all persons who handle and use treatment chemicals at the construction site are provided with appropriate, product-specific training. Among other things, the training must cover proper dosing requirements. g. Perform additional measures specified by the EPA Regional Office for the authorized use of cationic chemicals. If you have been authorized to use cationic chemicals at your site pursuant to Part 1.1.9, you must perform all additional measures as conditioned by your authorization to ensure that the use of such chemicals will not cause an exceedance of water quality standards. 25 The circumstances in which it is infeasible to design outlet structures in this manner are rare. Exceptions may include areas with extended cold weather,where using surface outlets may not be feasible during certain time periods (although they must be used during other periods). If you determine that it is infeasible to meet this requirement,you must provide documentation in your SWPPP to support your determination, including the specific conditions or time periods when this exception will apply. Page 1 1 2017 Construction General Permit (CGP) (as modified) 2.2.14 Stabilize exposed portions of the site. Implement and maintain stabilization measures (e.g., seeding protected by erosion controls until vegetation is established, sodding, mulching, erosion control blankets, hydromulch, gravel) that minimize erosion from exposed portions of the site in accordance with Parts 2.2.14a and 2.2.14b. a.. Stabilization Deadlines:26 Total Amount of Land Disturbance Deadline Occurring At Any One Time27 i. Five acres or less(55.0) Initiate the installation of stabilization measures immediately28 in any areas of exposed soil where Note:this includes sites disturbing more construction activities have permanently ceased or will than five acres(>5.0)total over the be temporarily inactive for 14 or more calendar days;29 course of a project, but that limit and disturbance at any one time (i.e., phase Complete the installation of stabilization measures as the disturbance) to five acres or less soon as practicable, but no later than 14 calendar days (:55.0) after stabilization has been initiated.30 26 EPA may determine, based on an inspection carried out under Part 4.8 and corrective actions required under Part 5.3, that the level of sediment discharge on the site makes it necessary to require a faster schedule for completing stabilization. For instance,if sediment discharges from an area of exposed soil that is required to be stabilized are compromising the performance of existing stormwater controls, EPA may require stabilization to correct this problem. 27 Limiting disturbances to five (5) acres or less at any one time means that at no time during the project do the cumulative earth disturbances exceed five (5) acres.The following examples would qualify as limiting disturbances at any one time to five (5) acres or less: 1. The total area of disturbance for a project is five (5) acres or less. 2. The total area of disturbance for a project will exceed five (5) acres, but the operator ensures that no more than five (5) acres will be disturbed at any one time through implementation of stabilization measures. In this way,site stabilization can be used to "free up" land that can be disturbed without exceeding the five (5)-acre cap to qualify for the 14-day stabilization deadline. For instance,if an operator completes stabilization of two (2) acres of land on a five (5)-acre disturbance, then two (2) additional acres could be disturbed while still qualifying for the longer 14-day stabilization deadline. 28 The following are examples of activities that would constitute the immediate initiation of stabilization: 1. Prepping the soil for vegetative or non-vegetative stabilization as long as seeding, planting, and/or installation of non-vegetative stabilization products takes place as soon as practicable, but no later than one (1) calendar day of completing soil preparation; 2. Applying mulch or other non-vegetative product to the exposed area; 3. Seeding or planting the exposed area; 4. Starting any of the activities in # 1 -3 on a portion of the entire area that will be stabilized; and 5. Finalizing arrangements to have stabilization product fully installed in compliance with the deadlines for completing stabilization. 29 The requirement to initiate stabilization immediately is triggered as soon as you know that construction work on a portion of the site is temporarily ceased and will not resume for 14 or more days, or as soon as you know that construction work is permanently ceased.In the context of this provision, "immediately" means as soon as practicable, but no later than the end of the next business day,following the day when the construction activities have temporarily or permanently ceased. 30 If vegetative stabilization measures are being implemented,stabilization is considered "installed" when all activities necessary to seed or plant the area are completed. If non-vegetative stabilization measures are being implemented,stabilization is considered "installed" when all such measures are implemented or applied. Page 12 2017 Construction General Permit (CGP) (as modified) ii. More than five acres(>5.0) Initiate the installation of stabilization measures immediately3l in any areas of exposed soil where construction activities have permanently ceased or will be temporarily inactive for 14 or more calendar days;32 and • Complete the installation of stabilization measures as soon as practicable, but no later than seven (7) calendar days after stabilization has been initiated.33 iii. Exceptions: (a) Arid, semi-arid, and drought-stricken areas (as defined in Appendix A). If it is the seasonally dry period or a period in which drought is occurring, and vegetative stabilization measures are being used: (i) Immediately initiate and, within 14 calendar days of a temporary or permanent cessation of work in any portion of your site, complete the installation of temporary non-vegetative stabilization measures to the extent necessary to prevent erosion; (ii) As soon as practicable, given conditions or circumstances on the site, complete all activities necessary to seed or plant the area to be stabilized; and (iii) If construction is occurring during the seasonally dry period, indicate in your SWPPP the beginning and ending dates of the seasonally dry period and your site conditions. Also include the schedule you will follow for initiating and completing vegetative stabilization. (b) Operators that are affected by unforeseen circumstances34 that delay the initiation and/or completion of vegetative stabilization: (i) Immediately initiate and, within 14 calendar days, complete the installation of temporary non-vegetative stabilization measures to prevent erosion; (ii) Complete all soil conditioning, seeding,watering or irrigation installation, mulching, and other required activities related to the planting and initial establishment of vegetation as soon as conditions or circumstances allow it on your site; and (iii) Document in the SWPPP the circumstances that prevent you from meeting the deadlines in Part 2.2.14a and the schedule you will follow for initiating and completing stabilization. (c) Discharges to a sediment- or nutrient-impaired water or to a water that is identified by your state,tribe, or EPA as Tier 2, Tier 2.5, or Tier 3 for antidegradation purposes. Complete stabilization as soon as 31 See footnote 27 32 See footnote 28 33 See footnote 29 34 Examples include problems with the supply of seed stock or with the availability of specialized equipment and unsuitability of soil conditions due to excessive precipitation and/or flooding. Page 13 2017 Construction General Permit (CGP) (as modified) practicable, but no later than seven (7) calendar days after stabilization has been initiated. b. Final Stabilization Criteria (for any areas not covered by permanent structures): i. Establish uniform, perennial vegetation (i.e., evenly distributed, without large bare areas) that provides 70 percent or more of the cover that is provided by vegetation native to local undisturbed areas; and/or ii. Implement permanent non-vegetative stabilization measures35 to provide effective cover. iii. Exceptions: (a) Arid, semi-arid, and drought-stricken areas (as defined in Appendix A). Final stabilization is met if the area has been seeded or planted to establish vegetation that provides 70 percent or more of the cover that is provided by vegetation native to local undisturbed areas within three (3) years and, to the extent necessary to prevent erosion on the seeded or planted area, non-vegetative erosion controls have been applied that provide cover for at least three years without active maintenance. (b) Disturbed areas on agricultural land that are restored to their preconstruction agricultural use. The Part 2.2.14b final stabilization criteria does not apply. (c) Areas that need to remain disturbed. In limited circumstances, stabilization may not be required if the intended function of a specific area of the site necessitates that it remain disturbed, and only the minimum area needed remains disturbed (e.g., dirt access roads, utility pole pads, areas being used for storage of vehicles, equipment, materials). 2.3 POLLUTION PREVENTION REQUIREMENTS36 You must implement pollution prevention controls in accordance with the following requirements to minimize the discharge of pollutants in stormwater and to prevent the discharge of pollutants from spilled or leaked materials from construction activities. 2.3.1 For equipment and vehicle fueling and maintenance: a. Provide an effective means of eliminating the discharge of spilled or leaked chemicals, including fuels and oils, from these activities;37 35 Examples of permanent non-vegetative stabilization measures include riprap, gravel, gabions, and geotextiles. 36 Under this permit,you are not required to minimize exposure for any products or materials where the exposure to precipitation and to stormwater will not result in a discharge of pollutants,or where exposure of a specific material or product poses little risk of stormwater contamination (such as final products and materials intended for outdoor use). 37 Examples of effective means include: • Locating activities away from waters of the U.S.and stormwater inlets or conveyances so that stormwater coming into contact with these activities cannot reach waters of the U.S.; • Providing secondary containment (e.g., spill berms, decks, spill containment pallets) and cover where appropriate; and • Having a spill kit available on site and ensuring personnel are available to respond expeditiously in the event of a leak or spill. Page 14 2017 Construction General Permit (CGP) (as modified) b. If applicable, comply with the Spill Prevention Control and Countermeasures (SPCC) requirements in 40 CFR part 1 12 and Section 311 of the CWA; c. Ensure adequate supplies are available at all times to handle spills, leaks, and disposal of used liquids; d. Use drip pans and absorbents under or around leaky vehicles; e. Dispose of or recycle oil and oily wastes in accordance with other federal, state, tribal, or local requirements; and f. Clean up spills or contaminated surfaces immediately, using dry clean up measures (do not clean contaminated surfaces by hosing the area down), and eliminate the source of the spill to prevent a discharge or a continuation of an ongoing discharge. 2.3.2 For equipment and vehicle washing: a. Provide an effective means of minimizing the discharge of pollutants from equipment and vehicle washing,wheel wash water, and other types of wash waters;38 b. Ensure there is no discharge of soaps, solvents, or detergents in equipment and vehicle wash water; and c. For storage of soaps, detergents, or solvents, provide either (1) cover (e.g., plastic sheeting, temporary roofs) to minimize the exposure of these detergents to precipitation and to stormwater, or (2) a similarly effective means designed to minimize the discharge of pollutants from these areas. 2.3.3 For storage, handling, and disposal of building products, materials, and wastes: a.. For building materials and building products39, provide either (1) cover (e.g., plastic sheeting, temporary roofs) to minimize the exposure of these products to precipitation and to stormwater, or (2) a similarly effective means designed to minimize the discharge of pollutants from these areas. Minimization of exposure is not required in cases where the exposure to precipitation and to stormwater will not result in a discharge of pollutants, or where exposure of a specific material or product poses little risk of stormwater contamination (such as final products and materials intended for outdoor use). b. For pesticides, herbicides, insecticides, fertilizers, and landscape materials: i. In storage areas, provide either (1) cover (e.g., plastic sheeting, temporary roofs) to minimize the exposure of these chemicals to precipitation and to stormwater, or (2) a similarly effective means designed to minimize the discharge of pollutants from these areas; and ii. Comply with all application and disposal requirements included on the registered pesticide, herbicide, insecticide, and fertilizer label (see also Part 2.3.5). c. For diesel fuel, oil, hydraulic fluids, other petroleum products, and other chemicals: 38 Examples of effective means include locating activities away from waters of the U.S.and stormwater inlets or conveyances and directing wash waters to a sediment basin or sediment trap, using filtration devices,such as filter bags or sand filters, or using other similarly effective controls. 39 Examples of building materials and building products typically present at construction sites include asphalt sealants, copper flashing, roofing materials, adhesives,concrete admixtures, and gravel and mulch stockpiles. Page 15 2017 Construction General Permit (CGP) (as modified) i. Store chemicals in water-tight containers, and provide either (1) cover(e.g., plastic sheeting, temporary roofs) to minimize the exposure of these containers to precipitation and to stormwater, or (2) a similarly effective means designed to minimize the discharge of pollutants from these areas (e.g., having a spill kit available on site and ensuring personnel are available to respond expeditiously in the event of a leak or spill), or provide secondary containment (e.g., spill berms, decks, spill containment pallets); and ii. Clean up spills immediately, using dry clean-up methods where possible, and dispose of used materials properly. You are prohibited from hosing the area down to clean surfaces or spills. Eliminate the source of the spill to prevent a discharge or a furtherance of an ongoing discharge. d. For hazardous or toxic wastes:40 i. Separate hazardous or toxic waste from construction and domestic waste; ii. Store waste in sealed containers,which are constructed of suitable materials to prevent leakage and corrosion, and which are labeled in accordance with applicable Resource Conservation and Recovery Act (RCRA) requirements and all other applicable federal, state, tribal, or local requirements; iii. Store all outside containers within appropriately-sized secondary containment (e.g., spill berms, decks, spill containment pallets) to prevent spills from being discharged, or provide a similarly effective means designed to prevent the discharge of pollutants from these areas (e.g., storing chemicals in a covered area, having a spill kit available on site); iv. Dispose of hazardous or toxic waste in accordance with the manufacturer's recommended method of disposal and in compliance with federal, state, tribal, and local requirements; v. Clean up spills immediately, using dry clean-up methods, and dispose of used materials properly. You are prohibited from hosing the area down to clean surfaces or spills. Eliminate the source of the spill to prevent a discharge or a furtherance of an ongoing discharge; and vi. Follow all other federal, state, tribal, and local requirements regarding hazardous or toxic waste. e. For construction and domestic wastes:41 i. Provide waste containers (e.g., dumpster, trash receptacle) of sufficient size and number to contain construction and domestic wastes; ii. Keep waste container lids closed when not in use and close lids at the end of the business day for those containers that are actively used throughout the day. For waste containers that do not have lids, provide either (1) cover (e.g., a tarp, plastic sheeting, temporary roof) to minimize exposure of wastes to precipitation, 40 Examples of hazardous or toxic waste that may be present at construction sites include paints,caulks, sealants,fluorescent light ballasts,solvents, petroleum-based products,wood preservatives, additives, curing compounds, and acids. 41 Examples of construction and domestic waste include packaging materials,scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics,styrofoam, concrete, demolition debris; and other trash or building materials. Page 16 2017 Construction General Permit (CGP) (as modified) or (2) a similarly effective means designed to minimize the discharge of pollutants (e.g., secondary containment); iii. On business days, clean up and dispose of waste in designated waste containers; and iv. Clean up immediately if containers overflow. f. For sanitary waste, position portable toilets so that they are secure and will not be tipped or knocked over, and located away from waters of the U.S. and stormwater inlets or conveyances. 2.3.4 For washing applicators and containers used for stucco, paint, concrete, form release oils, curing compounds, or other materials: a.. Direct wash water into a leak-proof container or leak-proof and lined pit designed so that no overflows can occur due to inadequate sizing or precipitation; b. Handle washout or cleanout wastes as follows: i. Do not dump liquid wastes in storm sewers or waters of the U.S.; ii. Dispose of liquid wastes in accordance with applicable requirements in Part 2.3.3; and iii. Remove and dispose of hardened concrete waste consistent with your handling of other construction wastes in Part 2.3.3; and c. Locate any washout or cleanout activities as far away as possible from waters of the U.S. and stormwater inlets or conveyances, and, to the extent feasible, designate areas to be used for these activities and conduct such activities only in these areas. 2.3.5 For the application of fertilizers: a.. Apply at a rate and in amounts consistent with manufacturer's specifications, or document in the SWPPP departures from the manufacturer specifications where appropriate in accordance with Part 7.2.6.b.ix; b. Apply at the appropriate time of year for your location, and preferably timed to coincide as closely as possible to the period of maximum vegetation uptake and growth; c. Avoid applying before heavy rains that could cause excess nutrients to be discharged; d. Never apply to frozen ground; e. Never apply to stormwater conveyance channels; and f. Follow all other federal, state, tribal, and local requirements regarding fertilizer application. 2.3.6 Emergency Spill Notification Requirements Discharges of toxic or hazardous substances from a spill or other release are prohibited, consistent with Part 1.3.5. Where a leak, spill, or other release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR 1 10, 40 CFR 117, or 40 CFR 302 occurs during a 24-hour period, you must notify the National Response Center (NRC) at (800) 424-8802 or, in the Washington, DC metropolitan area, call (202) 267-2675 in accordance with the requirements of 40 CFR 1 10, 40 CFR 117, and 40 CFR 302 as soon as you have knowledge of the release. You must also,within seven (7) calendar days of knowledge of the release, provide a Page 17 2017 Construction General Permit (CGP) (as modified) description of the release, the circumstances leading to the release, and the date of the release. State, tribal, or local requirements may necessitate additional reporting of spills or discharges to local emergency response, public health, or drinking water supply agencies. 2.4 CONSTRUCTION DEWATERING REQUIREMENTS Comply with the following requirements to minimize the discharge of pollutants in ground water or accumulated stormwater that is removed from excavations, trenches, foundations, vaults, or other similar points of accumulation, in accordance with Part 1.2.2.42 2.4.1 Treat dewatering discharges with controls to minimize discharges of pollutants;43 2.4.2 Do not discharge visible floating solids or foam; 2.4.3 Use an oil-water separator or suitable filtration device (such as a cartridge filter) that is designed to remove oil, grease, or other products if dewatering water is found to contain these materials; 2.4.4 To the extent feasible, use vegetated, upland areas of the site to infiltrate dewatering water before discharge. You are prohibited from using waters of the U.S. as part of the treatment area; 2.4.5 At all points where dewatering water is discharged, comply with the velocity dissipation requirements of Part 2.2.1 1; 2.4.6 With backwash water, either haul it away for disposal or return it to the beginning of the treatment process; and 2.4.7 Replace and clean the filter media used in dewatering devices when the pressure differential equals or exceeds the manufacturer's specifications. 3 WATER QUALITY-BASED EFFLUENT LIMITATIONS 3.1 GENERAL EFFLUENT LIMITATION TO MEET APPLICABLE WATER QUALITY STANDARDS Discharges must be controlled as necessary to meet applicable water quality standards. Discharges must also comply with any additional state or tribal requirements that are in Part 9. In the absence of information demonstrating otherwise, EPA expects that compliance with the conditions in this permit will result in stormwater discharges being controlled as necessary to meet applicable water quality standards. If at any time you become aware, or EPA determines, that discharges are not being controlled as necessary to meet applicable water quality standards, you must take corrective action as required in Parts 5.1 and 5.2, and document the corrective actions as required in Part 5.4. 42 Uncontaminated, clear (non-turbid) dewatering water can be discharged without being routed to a control. 43 Appropriate controls include sediment basins or sediment traps, sediment socks, dewatering tanks, tube settlers,weir tanks, filtration systems (e.g., bag or sand filters),and passive treatment systems that are designed to remove sediment.Appropriate controls to use downstream of dewatering controls to minimize erosion include vegetated buffers, check dams, riprap,and grouted riprap at outlets. Page 18 2017 Construction General Permit (CGP) (as modified) EPA may insist that you install additional controls (to meet the narrative water quality- based effluent limit above) on a site-specific basis, or require you to obtain coverage under an individual permit, if information in your NOI or from other sources indicates that your discharges are not controlled as necessary to meet applicable water quality standards.This includes situations where additional controls are necessary to comply with a wasteload allocation in an EPA-established or approved TMDL. If during your coverage under a previous permit, you were required to install and maintain stormwater controls specifically to meet the assumptions and requirements of an EPA-approved or established TMDL (for any parameter) or to otherwise control your discharge to meet water quality standards, you must continue to implement such controls as part of your coverage under this permit. 3.2 DISCHARGE LIMITATIONS FOR SITES DISCHARGING TO SENSITIVE WATERS44 For any portion of the site that discharges to a sediment or nutrient-impaired water or to a water that is identified by your state, tribe, or EPA as Tier 2, Tier 2.5, or Tier 3 for antidegradation purposes, you must comply with the inspection frequency specified in 4.3 and you must comply with the stabilization deadline specified in Part 2.2.14.a.iii.(c).45 If you discharge to a water that is impaired for a parameter other than a sediment- related parameter or nutrients, EPA will inform you if any additional controls are necessary for your discharge to be controlled as necessary to meet water quality standards, including for it to be consistent with the assumptions of any available wasteload allocation in any applicable TMDL, or if coverage under an individual permit is necessary. In addition, on a case-by-case basis, EPA may notify operators of new sites or operators of existing sites with increased discharges that additional analyses, stormwater controls, or other measures are necessary to comply with the applicable 44 Sensitive waters include waters that are impaired and Tier 2,Tier 2.5, and Tier 3 waters. "Impaired waters" are those waters identified by the state, tribe,or EPA as not meeting an applicable water quality standard and (1) requires development of a TMDL (pursuant to section 303(d) of the CWA;or (2) is addressed by an EPA-approved or established TMDL; or (3) is not in either of the above categories but the waterbody is covered by a pollution control program that meets the requirements of 40 CFR 130.7(b)(1).Your construction site will be considered to discharge to an impaired water if the first water of the U.S. to which you discharge is an impaired water for the pollutants contained in the discharge from your site. For discharges that enter a storm sewer system prior to discharge, the first water of the U.S.to which you discharge is the waterbody that receives the stormwater discharge from the storm sewer system. For assistance in determining whether your site discharges to impaired waters, EPA has developed a tool that is available both within the electronic NOI form in NeT, and at ..::...p ...®./ .............................::............Ir................ a.g ov OII as"l.e n des sfoirim c l.er diisclh�air .cfir . Tiers 2,2.5 and 3 refer to waters either identified by the state as high quality waters or Outstanding National Resource Waters under 40 CFR 131.12(a)(2) and (3). For the purposes of this permit,you are considered to discharge to a Tier 2,Tier 2.5,or Tier 3 water if the first water of the U.S. to which you discharge is identified by a state, tribe, or EPA as Tier 2,Tier 2.5, or Tier 3. For discharges that enter a storm sewer system prior to discharge,the water of the U.S. to which you discharge is the first water of the U.S. that receives the stormwater discharge from the storm sewer system.See list of Tier 2,Tier 2.5, and Tier 3 waters in Appendix F. EPA may determine on a case-by-case basis that a site discharges to a sensitive water. 45 If you qualify for any of the reduced inspection frequencies in Part 4.4,you may conduct inspections in accordance with Part 4.4 for any portion of your site that discharges to a sensitive water. Page 19 2017 Construction General Permit (CGP) (as modified) antidegradation requirements, or notify you that an individual permit application is necessary. If you discharge to a water that is impaired for polychlorinated biphenyls (PCBs) and are engaging in demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980,you must: a. Implement controls46 to minimize the exposure of PCB-containing building materials, including paint, caulk, and pre-1980 fluorescent lighting fixtures, to precipitation and to stormwater; and b. Ensure that disposal of such materials is performed in compliance with applicable state, federal, and local laws. 4 SITE INSPECTION REQUIREMENTS 4.1 PERSON(S) RESPONSIBLE FOR INSPECTING SITE The person(s) inspecting your site may be a person on your staff or a third party you hire to conduct such inspections. You are responsible for ensuring that the person who conducts inspections is a "qualified person.1147 4.2 FREQUENCY OF INSPECTIONS.48 At a minimum, you must conduct a site inspection in accordance with one of the two schedules listed below, unless you are subject to the Part 4.3 site inspection frequency for discharges to sensitive waters or qualify for a Part 4.4 reduction in the inspection frequency: 4.2.1 At least once every seven (7) calendar days; or 4.2.2 Once every 14 calendar days and within 24 hours of the occurrence of a storm event of 0.25 inches or greater, or the occurrence of runoff from snowmelt sufficient to cause a discharge.49 To determine if a storm event of 0.25 inches or greater has occurred on your site, you must either keep a properly maintained rain gauge on your site, or obtain the storm event information from a weather station that is representative of your location. For any day of rainfall during normal business hours that measures 0.25 inches or greater, you must record the total rainfall measured for that day in accordance with Part 4.7.1 d. 46 Examples of controls to minimize exposure of PCBs to precipitation and stormwater include separating work areas from non-work areas and selecting appropriate personal protective equipment and tools, constructing a containment area so that all dust or debris generated by the work remains within the protected area, using tools that minimize dust and heat (<2120F). For additional information, refer to Part 2.3.3 of the CGP Fact Sheet. 47 A "qualified person" is a person knowledgeable in the principles and practice of erosion and sediment controls and pollution prevention,who possesses the appropriate skills and training to assess conditions at the construction site that could impact stormwater quality,and the appropriate skills and training to assess the effectiveness of any stormwater controls selected and installed to meet the requirements of this permit. 48 Inspections are only required during the site's normal working hours. 49 "Within 24 hours of the occurrence of a storm event" means that you must conduct an inspection within 24 hours once a storm event has produced 0.25 inches within a 24-hour period,even if the storm event is still continuing.Thus,if you have elected to inspect bi-weekly in accordance with Part 4.2.2 and there is a storm event at your site that continues for multiple days, and each day of the storm produces 0.25 inches or more of rain,you must conduct an inspection within 24 hours of the first day of the storm and within 24 hours after the end of the storm. Page 20 2017 Construction General Permit (CGP) (as modified) 4.3 INCREASE IN INSPECTION FREQUENCY FOR SITES DISCHARGING TO SENSITIVE WATERS. For any portion of the site that discharges to a sediment or nutrient-impaired water or to a water that is identified by your state, tribe, or EPA as Tier 2, Tier 2.5, or Tier 3 for antidegradation purposes (see Part 3.2), instead of the inspection frequency specified in Part 4.2, you must conduct inspections in accordance with the following inspection frequencies: Once every seven (7) calendar days and within 24 hours of the occurrence of a storm event of 0.25 inches or greater, or the occurrence of runoff from snowmelt sufficient to cause a discharge.To determine if a storm event of 0.25 inches or greater has occurred on your site, you must either keep a properly maintained rain gauge on your site, or obtain the storm event information from a weather station that is representative of your location. For any day of rainfall during normal business hours that measures 0.25 inches or greater, you must record the total rainfall measured for that day in accordance with Part 4.7.1 d. 4.4 REDUCTIONS IN INSPECTION FREQUENCY 4.4.1 Stabilized areas. a.. You may reduce the frequency of inspections to twice per month for the first month, no more than 14 calendar days apart, then once per month in any area of your site where the stabilization steps in 2.2.14a have been completed. If construction activity resumes in this portion of the site at a later date, the inspection frequency immediately increases to that required in Parts 4.2 and 4.3, as applicable. You must document the beginning and ending dates of this period in your SWPPP. b. Exception. For "linear construction sites" (as defined in Appendix A) where disturbed portions have undergone final stabilization at the same time active construction continues on others, you may reduce the frequency of inspections to twice per month for the first month, no more than 14 calendar days apart, in any area of your site where the stabilization steps in 2.2.14a have been completed. After the first month, inspect once more within 24 hours of the occurrence of a storm event of 0.25 inches or greater. If there are no issues or evidence of stabilization problems,you may suspend further inspections. If "wash-out" of stabilization materials and/or sediment is observed, following re-stabilization, inspections must resume at the inspection frequency required in Part 4.4.1 a Inspections must continue until final stabilization is visually confirmed following a storm event of 0.25 inches or greater. 4.4.2 Arid, semi-arid, or drought-stricken areas (as defined in Appendix A). If it is the seasonally dry period or a period in which drought is occurring, you may reduce the frequency of inspections to once per month and within 24 hours of the occurrence of a storm event of 0.25 inches or greater. You must document that you are using this reduced schedule and the beginning and ending dates of the seasonally dry period in your SWPPP. To determine if a storm event of 0.25 inches or greater has occurred on your site, you must either keep a properly maintained rain gauge on your site, or obtain the storm event information from a weather station that is representative of your location. For any day of rainfall during normal business hours that measures 0.25 inches or greater, you must record the total rainfall measured for that day in accordance with Part 4.7.1 d. 4.4.3 Frozen conditions: a. If you are suspending construction activities due to frozen conditions, you may temporarily suspend inspections on your site until thawing conditions (as defined in Appendix A) begin to occur if: Page 21 2017 Construction General Permit (CGP) (as modified) i. Runoff is unlikely due to continuous frozen conditions that are likely to continue at your site for at least three (3) months based on historic seasonal averages. If unexpected weather conditions (such as above freezing temperatures or rain events) make discharges likely, you must immediately resume your regular inspection frequency as described in Parts 4.2 and 4.3, as applicable; ii. Land disturbances have been suspended; and iii. All disturbed areas of the site have been stabilized in accordance with Part 2.2.14a. b. If you are still conducting construction activities during frozen conditions, you may reduce your inspection frequency to once per month if: i. Runoff is unlikely due to continuous frozen conditions that are likely to continue at your site for at least three (3) months based on historic seasonal averages. If unexpected weather conditions (such as above freezing temperatures or rain events) make discharges likely, you must immediately resume your regular inspection frequency as described in Parts 4.2 and 4.3, as applicable; and ii. Except for areas in which you are actively conducting construction activities, disturbed areas of the site have been stabilized in accordance with Part 2.2.14a. You must document the beginning and ending dates of this period in your SWPPP. 4.5 AREAS THAT MUST BE INSPECTED During your site inspection, you must at a minimum inspect the following areas of your site: 4.5.1 All areas that have been cleared, graded, or excavated and that have not yet completed stabilization consistent with Part 2.2.14a; 4.5.2 All stormwater controls (including pollution prevention controls) installed at the site to comply with this permit;50 4.5.3 Material,waste, borrow, and equipment storage and maintenance areas that are covered by this permit; 4.5.4 All areas where stormwater typically flows within the site, including drainageways designed to divert, convey, and/or treat stormwater; 4.5.5 All points of discharge from the site; and 4.5.6 All locations where stabilization measures have been implemented. You are not required to inspect areas that, at the time of the inspection, are considered unsafe to your inspection personnel. 4.6 REQUIREMENTS FOR INSPECTIONS During your site inspection, you must at a minimum: 4.6.1 Check whether all stormwater controls (i.e., erosion and sediment controls and pollution prevention controls) are properly installed, appear to be operational, and are working as intended to minimize pollutant discharges; 50 This includes the requirement to inspect for sediment that has been tracked out from the site onto paved roads,sidewalks, or other paved areas consistent with Part 2.2.4. Page 22 2017 Construction General Permit (CGP) (as modified) 4.6.2 Check for the presence of conditions that could lead to spills, leaks, or other accumulations of pollutants on the site; 4.6.3 Identify any locations where new or modified stormwater controls are necessary to meet the requirements of Parts 2 and/or 3; 4.6.4 Check for signs of visible erosion and sedimentation (i.e., sediment deposits) that have occurred and are attributable to your discharge at points of discharge and, if applicable, the banks of any waters of the U.S. flowing within or immediately adjacent to the site; 4.6.5 Identify any incidents of noncompliance observed; 4.6.6 If a discharge is occurring during your inspection: a.. Identify all discharge points at the site; and b. Observe and document the visual quality of the discharge, and take note of the characteristics of the stormwater discharge, including color; odor; floating, settled, or suspended solids; foam; oil sheen; and other indicators of stormwater pollutants. 4.6.7 Based on the results of your inspection, complete any necessary maintenance under Part 2.1.4 and corrective action under Part 5. 4.7 INSPECTION REPORT 4.7.1 You must complete an inspection report within 24 hours of completing any site inspection. Each inspection report must include the following: a.. The inspection date; b. Names and titles of personnel making the inspection; c. A summary of your inspection findings, covering at a minimum the observations you made in accordance with Part 4.6, including any necessary maintenance or corrective actions; d. If you are inspecting your site at the frequency specified in Part 4.2.2, Part 4.3, or Part 4.4.1 b, and you conducted an inspection because of rainfall measuring 0.25 inches or greater, you must include the applicable rain gauge or weather station readings that triggered the inspection; and e. If you determined that it is unsafe to inspect a portion of your site, you must describe the reason you found it to be unsafe and specify the locations to which this condition applies. 4.7.2 Each inspection report must be signed in accordance with Appendix I, Part 1.11 of this permit. 4.7.3 You must keep a copy of all inspection reports at the site or at an easily accessible location, so that it can be made available at the time of an on-site inspection or upon request by EPA. 4.7.4 You must retain all inspection reports completed for this Part for at least three (3) years from the date that your permit coverage expires or is terminated. 4.8 INSPECTIONS BY EPA You must allow EPA, or an authorized representative of EPA, to conduct the following activities at reasonable times.To the extent that you are utilizing shared controls that are Page 23 2017 Construction General Permit (CGP) (as modified) not on site to comply with this permit, you must make arrangements for EPA to have access at all reasonable times to those areas where the shared controls are located. 4.8.1 Enter onto all areas of the site, including any construction support activity areas covered by this permit, any off-site areas where shared controls are utilized to comply with this permit, discharge locations, adjoining waterbodies, and locations where records are kept under the conditions of this permit; 4.8.2 Access and copy any records that must be kept under the conditions of this permit; 4.8.3 Inspect your construction site, including any construction support activity areas covered by this permit (see Part 1.2.1 c), any stormwater controls installed and maintained at the site, and any off-site shared controls utilized to comply with this permit; and 4.8.4 Sample or monitor for the purpose of ensuring compliance. 5 CORRECTIVE ACTIONS 5.1 CONDITIONS TRIGGERING CORRECTIVE ACTION. You must take corrective action to address any of the following conditions identified at your site: 5.1.1 A stormwater control needs repair or replacement (beyond routine maintenance required under Part 2.1.4); or 5.1.2 A stormwater control necessary to comply with the requirements of this permit was never installed, or was installed incorrectly; or 5.1.3 Your discharges are causing an exceedance of applicable water quality standards; or 5.1.4 A prohibited discharge has occurred (see Part 1.3). 5.2 CORRECTIVE ACTION DEADLINES For any corrective action triggering conditions in Part 5.1, you must: 5.2.1 Immediately take all reasonable steps to address the condition, including cleaning up any contaminated surfaces so the material will not discharge in subsequent storm events; 5.2.2 When the problem does not require a new or replacement control or significant repair, the corrective action must be completed by the close of the next business day; 5.2.3 When the problem requires a new or replacement control or significant repair, install the new or modified control and make it operational, or complete the repair, by no later than seven (7) calendar days from the time of discovery. If it is infeasible to complete the installation or repair within seven (7) calendar days,you must document in your records why it is infeasible to complete the installation or repair within the 7-day timeframe and document your schedule for installing the stormwater control(s) and making it operational as soon as feasible after the 7-day timeframe. Where these actions result in changes to any of the stormwater controls or procedures documented in your SWPPP, you must modify your SWPPP accordingly within seven (7) calendar days of completing this work. Page 24 2017 Construction General Permit (CGP) (as modified) 5.3 CORRECTIVE ACTION REQUIRED BY EPA You must comply with any corrective actions required by EPA as a result of permit violations found during an inspection carried out under Part 4.8. 5.4 CORRECTIVE ACTION REPORT For each corrective action taken in accordance with this Part, you must complete a report in accordance with the following: 5.4.1 Within 24 hours of identifying the corrective action condition, document the specific condition and the date and time it was identified. 5.4.2 Within 24 hours of completing the corrective action (in accordance with the deadlines in Part 5.2), document the actions taken to address the condition, including whether any SWPPP modifications are required. 5.4.3 Each corrective action report must be signed in accordance with Appendix I, Part 1.11 of this permit. 5.4.4 You must keep a copy of all corrective action reports at the site or at an easily accessible location, so that it can be made available at the time of an on-site inspection or upon request by EPA. 5.4.5 You must retain all corrective action reports completed for this Part for at least three (3) years from the date that your permit coverage expires or is terminated. 6 STAFF TRAINING REQUIREMENTS Each operator, or group of multiple operators, must assemble a "stormwater team" to carry out compliance activities associated with the requirements in this permit. 6.1 Prior to the commencement of construction activities, you must ensure that the following personnel51 on the stormwater team understand the requirements of this permit and their specific responsibilities with respect to those requirements: a.. Personnel who are responsible for the design, installation, maintenance, and/or repair of stormwater controls (including pollution prevention controls); b. Personnel responsible for the application and storage of treatment chemicals (if applicable); c. Personnel who are responsible for conducting inspections as required in Part 4.1; and d. Personnel who are responsible for taking corrective actions as required in Part 5. 6.2 You are responsible for ensuring that all activities on the site comply with the requirements of this permit. You are not required to provide or document formal training for subcontractors or other outside service providers, but you must ensure that such personnel understand any requirements of this permit that may be affected by the work they are subcontracted to perform. 51 If the person requiring training is a new employee who starts after you commence construction activities, you must ensure that this person has the proper understanding as required above prior to assuming particular responsibilities related to compliance with this permit. For emergency-related projects,the requirement to train personnel prior to commencement of construction activities does not apply, however,such personnel must have the required training prior to NOI submission. Page 25 2017 Construction General Permit (CGP) (as modified) 6.3 At a minimum, members of the stormwater team must be trained to understand the following if related to the scope of their job duties (e.g., only personnel responsible for conducting inspections need to understand how to conduct inspections): a. The permit deadlines associated with installation, maintenance, and removal of stormwater controls and with stabilization; b. The location of all stormwater controls on the site required by this permit and how they are to be maintained; c. The proper procedures to follow with respect to the permit's pollution prevention requirements; and d. When and how to conduct inspections, record applicable findings, and take corrective actions. 6.4 Each member of the stormwater team must have easy access to an electronic or paper copy of applicable portions of this permit, the most updated copy of your SWPPP, and other relevant documents or information that must be kept with the SWPPP. 7 STORMWATER POLLUTION PREVENTION PLAN (SWPPP) 7.1 GENERAL REQUIREMENTS All operators associated with a construction site under this permit must develop a SWPPP consistent with the requirements in Part 7 prior to their submittal of the N01.52,53 The SWPPP must be kept up-to-date throughout coverage under this permit. If a SWPPP was prepared under a previous version of this permit, the operator must review and update the SWPPP to ensure that this permit's requirements are addressed prior to submitting an NOI for coverage under this permit. 7.2 SWPPP CONTENTS At a minimum, the SWPPP must include the information specified in this Part and as specified in other parts of this permit. 7.2.1 All Site Operators. Include a list of all other operators who will be engaged in construction activities at the site, and the areas of the site over which each operator has control. 7.2.2 Stormwater Team. Identify the personnel (by name or position) that are part of the stormwater team, as well as their individual responsibilities, including which members are responsible for conducting inspections. 52 The SWPPP does not establish the effluent limits and other permit terms and conditions that apply to your site's discharges; these limits,terms, and conditions are established in this permit. Where there are multiple operators associated with the same site, they may develop a group SWPPP instead of multiple individual SWPPPs. Regardless of whether there is a group SWPPP or multiple individual SWPPPs, each operator is responsible for compliance with the permit's terms and conditions. In other words, if Operator A relies on Operator B to satisfy its permit obligations,Operator A does not have to duplicate those permit-related functions if Operator B is implementing them for both operators to be in compliance with the permit. However, Operator A remains responsible for permit compliance if Operator B fails to implement any measures necessary for Operator A to comply with the permit. In addition, all operators must ensure, either directly or through coordination with other operators, that their activities do not compromise any other operators' controls and/or any shared controls. Page 26 2017 Construction General Permit (CGP) (as modified) 7.2.3 Nature of Construction Activities.54 Include the following: a.. A description of the nature of your construction activities, including the age or dates of past renovations for structures that are undergoing demolition; b. The size of the property (in acres or length in miles if a linear construction site); c. The total area expected to be disturbed by the construction activities (to the nearest quarter acre or nearest quarter mile if a linear construction site); d. A description of any on-site and off-site construction support activity areas covered by this permit (see Part 1.2.1 c); e. The maximum area expected to be disturbed at any one time, including on-site and off-site construction support activity areas; f. A description and projected schedule for the following: i. Commencement of construction activities in each portion of the site, including clearing and grubbing, mass grading, demolition activities, site preparation (i.e., excavating, cutting and filling), final grading, and creation of soil and vegetation stockpiles requiring stabilization; ii. Temporary or permanent cessation of construction activities in each portion of the site; iii. Temporary or final stabilization of exposed areas for each portion of the site; and iv. Removal of temporary stormwater controls and construction equipment or vehicles, and the cessation of construction-related pollutant-generating activities. g. A list and description of all pollutant-generating activities55 on the site. For each pollutant-generating activity, include an inventory of pollutants or pollutant constituents (e.g., sediment, fertilizers, pesticides, paints, caulks, sealants, fluorescent light ballasts, contaminated substrates, solvents, fuels) associated with that activity, which could be discharged in stormwater from your construction site. You must take into account where potential spills and leaks could occur that contribute pollutants to stormwater discharges, and any known hazardous or toxic substances, such as PCBs and asbestos, that will be disturbed or removed during construction; h. Business days and hours for the project; i. If you are conducting construction activities in response to a public emergency (see Part 1.4), a description of the cause of the public emergency (e.g., mud slides, earthquake, extreme flooding conditions, widespread disruption in essential public services), information substantiating its occurrence (e.g., state disaster declaration or similar state or local declaration), and a description of the construction necessary to reestablish affected public services. 7.2.4 Site Map. Include a legible map, or series of maps, showing the following features of the site: a.. Boundaries of the property; 54 If plans change due to unforeseen circumstances or for other reasons, the requirement to describe the sequence and estimated dates of construction activities is not meant to "lock in" the operator to meeting these dates. When departures from initial projections are necessary,this should be documented in the SWPPP itself,or in associated records, as appropriate. 55 Examples of pollutant-generating activities include paving operations;concrete, paint, and stucco washout and waste disposal;solid waste storage and disposal; and dewatering operations. Page 27 2017 Construction General Permit (CGP) (as modified) b. Locations where construction activities will occur, including: i. Locations where earth-disturbing activities will occur (note any phasing), including any demolition activities; ii. Approximate slopes before and after major grading activities (note any steep slopes (as defined in Appendix A)); iii. Locations where sediment, soil, or other construction materials will be stockpiled; iv. Any water of the U.S. crossings; v. Designated points where vehicles will exit onto paved roads; vi. Locations of structures and other impervious surfaces upon completion of construction; and vii. Locations of on-site and off-site construction support activity areas covered by this permit (see Part 1.2.1 c). c. Locations of all waters of the U.S.within and one mile downstream of the site's discharge point.Also identify if any are listed as impaired, or are identified as a Tier 2, Tier 2.5, or Tier 3 water; d. Areas of federally listed critical habitat within the site and/or at discharge locations; e. Type and extent of pre-construction cover on the site (e.g., vegetative cover, forest, pasture, pavement, structures); f. Drainage patterns of stormwater and authorized non-stormwater before and after major grading activities; g. Stormwater and authorized non-stormwater discharge locations, including: i. Locations where stormwater and/or authorized non-stormwater will be discharged to storm drain inlets;56 and ii. Locations where stormwater or authorized non-stormwater will be discharged directly to waters of the U.S. h. Locations of all potential pollutant-generating activities identified in Part 7.2.3g; i. Locations of stormwater controls, including natural buffer areas and any shared controls utilized to comply with this permit; and j. Locations where polymers, flocculants, or other treatment chemicals will be used and stored. 7.2.5 Non-Stormwater Discharges. Identify all authorized non-Stormwater discharges in Part 1.2.2 that will or may occur. 7.2.6 Description of Stormwater Controls. a.. For each of the Part 2.2 erosion and sediment control effluent limits, Part 2.3 pollution prevention effluent limits, and Part 2.4 construction dewatering effluent limits, as applicable to your site, you must include the following: i. A description of the specific control(s) to be implemented to meet the effluent limit; 56 The requirement to show storm drain inlets in the immediate vicinity of the site on your site map only applies to those inlets that are easily identifiable from your site or from a publicly accessible area immediately adjacent to your site. Page 28 2017 Construction General Permit (CGP) (as modified) ii. Any applicable stormwater control design specifications (including references to any manufacturer specifications and/or erosion and sediment control manuals/ordinances relied upon);57 iii. Routine stormwater control maintenance specifications; and iv. The projected schedule for stormwater control installation/implementation. b. You must also include any of the following additional information as applicable. i. Natural buffers and/or equivalent sediment controls (see Part 2.2.1 and Appendix G). You must include the following: (a) The compliance alternative to be implemented; (b) If complying with alternative 2, the width of natural buffer retained; (c) If complying with alternative 2 or 3, the erosion and sediment control(s) you will use to achieve an equivalent sediment reduction, and any information you relied upon to demonstrate the equivalency; (d) If complying with alternative 3, a description of why it is infeasible for you to provide and maintain an undisturbed natural buffer of any size; (e) For "linear construction sites" where it is infeasible to implement compliance alternative 1, 2, or 3, a rationale for this determination, and a description of any buffer width retained and/or supplemental erosion and sediment controls installed; and (f) A description of any disturbances that are exempt under Part 2.2.1 that occur within 50 feet of a water of the U.S. ii. Perimeter controls for a "linear construction site" (see Part 2.2.3). For areas where perimeter controls are not feasible, include documentation to support this determination and a description of the other practices that will be implemented to minimize discharges of pollutants in stormwater associated with construction activities. Note: Routine maintenance specifications for perimeter controls documented in the SWPPP must include the Part 2.2.3a requirement that sediment be removed before it has accumulated to one-half of the above-ground height of any perimeter control. iii. Sediment track-out controls (see Parts 2.2.4b and 2.2.4c). Document the specific stabilization techniques and/or controls that will be implemented to remove sediment prior to vehicle exit. iv. Sediment basins (see Part 2.2.12). In circumstances where it is infeasible to utilize outlet structures that withdraw water from the surface, include documentation to support this determination, including the specific conditions or time periods when this exception will apply. v. Treatment chemicals (see Part 2.2.13), you must include the following: (a) A listing of the soil types that are expected to be exposed during construction in areas of the project that will drain to chemical treatment systems. Also include a listing of soil types expected to be found in fill material to be used in these same areas, to the extent you have this information prior to construction; 57 Design specifications may be found in manufacturer specifications and/or in applicable erosion and sediment control manuals or ordinances.Any departures from such specifications must reflect good engineering practice and must be explained in the SWPPP. Page 29 2017 Construction General Permit (CGP) (as modified) (b) A listing of all treatment chemicals to be used at the site and why the selection of these chemicals is suited to the soil characteristics of your site; (c) If the applicable EPA Regional Office authorized you to use cationic treatment chemicals for sediment control, include the specific controls and implementation procedures designed to ensure that your use of cationic treatment chemicals will not lead to an exceedance of water quality standards; (d) The dosage of all treatment chemicals to be used at the site or the methodology to be used to determine dosage; (e) Information from any applicable Safety Data Sheet (SDS); (f) Schematic drawings of any chemically enhanced stormwater controls or chemical treatment systems to be used for application of the treatment chemicals; (g) A description of how chemicals will be stored consistent with Part 2.2.13c; (h) References to applicable state or local requirements affecting the use of treatment chemicals, and copies of applicable manufacturer's specifications regarding the use of your specific treatment chemicals and/or chemical treatment systems; and (i) A description of the training that personnel who handle and apply chemicals have received prior to permit coverage, or will receive prior to use of the treatment chemicals at your site. vi. Stabilization measures (see Part 2.2.14). You must include the following: (a) The specific vegetative and/or non-vegetative practices that will be used; (b) The stabilization deadline that will be met in accordance with Part 2.2.14.a.i-ii; (c) If complying with the deadlines for sites in arid, semi-arid, or drought-stricken areas, the beginning and ending dates of the seasonally dry period and the schedule you will follow for initiating and completing vegetative stabilization; and (d) If complying with deadlines for sites affected by unforeseen circumstances that delay the initiation and/or completion of vegetative stabilization, document the circumstances and the schedule for initiating and completing stabilization. vii. Spill prevention and response procedures (see Part 1.3.5 and Part 2.3). You must include the following: (a) Procedures for expeditiously stopping, containing, and cleaning up spills, leaks, and other releases. Identify the name or position of the employee(s) responsible for detection and response of spills or leaks; and (b) Procedures for notification of appropriate facility personnel, emergency response agencies, and regulatory agencies where a leak, spill, or other release containing a hazardous substance or oil in an amount equal to or in excess of a reportable quantity consistent with Part 2.3.6 and established under either 40 CFR 110, 40 CFR 117, or 40 CFR 302, occurs during a 24-hour period. Contact information must be in locations that are readily accessible and available to all employees. You may also reference the existence of Spill Prevention Control and Page 30 2017 Construction General Permit (CGP) (as modified) Countermeasure (SPCC) plans developed for the construction activity under Part 311 of the CWA, or spill control programs otherwise required by an NPDES permit for the construction activity, provided that you keep a copy of that other plan on site.58 viii. Waste management procedures (see Part 2.3.3). Describe the procedures you will follow for handling, storing and disposing of all wastes generated at your site consistent with all applicable federal, state, tribal, and local requirements, including clearing and demolition debris, sediment removed from the site, construction and domestic waste, hazardous or toxic waste, and sanitary waste. ix. Application of fertilizers (see Part 2.3.5). Document any departures from the manufacturer specifications where appropriate. 7.2.7 Procedures for Inspection.. Maintenance, and Corrective Action. Describe the procedures you will follow for maintaining your stormwater controls, conducting site inspections, and, where necessary, taking corrective actions, in accordance with Part 2.1.4, Part 4, and Part 5 of this permit. Also include: a.. The inspection schedule you will follow,which is based on whether your site is subject to Part 4.2 or Part 4.3, or whether your site qualifies for any of the reduced inspection frequencies in Part 4.4; b. If you will be conducting inspections in accordance with the inspection schedule in Part 4.2.2, Part 4.3, or Part 4.4.1 b, the location of the rain gauge or the address of the weather station you will be using to obtain rainfall data; c. If you will be reducing your inspection frequency in accordance with Part 4.4.1 b, the beginning and ending dates of the seasonally defined and period for your area or the valid period of drought; d. If you will be reducing your inspection frequency in accordance with Part 4.4.3, the beginning and ending dates of frozen conditions on your site; and e. Any maintenance or inspection checklists or other forms that will be used. 7.2.8 Staff Training. Include documentation that the required personnel were, or will be, trained in accordance with Part 6. 7.2.9 Compliance with Other Requirements. a.. Threatened and Endangered Species Protection. Include documentation required in Appendix D supporting your eligibility with regard to the protection of threatened and endangered species and designated critical habitat. b. Historic Properties. Include documentation required in Appendix E supporting your eligibility with regard to the protection of historic properties. c. Safe Drinking Water Act Underground Injection Control (UIC) Requirements for Certain Subsurface Stormwater Controls. If you are using any of the following stormwater controls at your site, document any contact you have had with the applicable state agency59 or EPA Regional Office responsible for implementing the requirements for underground injection wells in the Safe Drinking Water Act and EPA's implementing 58 Even if you already have an SPCC or other spill prevention plan in existence,your plans will only be considered adequate if they meet all of the requirements of this Part,either as part of your existing plan or supplemented as part of the SWPPP. 59 For state UIC program contacts,refer to the following EPA website:„ .-t..I;; s: . . uic. Page 31 2017 Construction General Permit (CGP) (as modified) regulations at 40 CFR 144-147. Such controls would generally be considered Class V UIC wells: i. Infiltration trenches (if stormwater is directed to any bored, drilled, driven shaft or dug hole that is deeper than its widest surface dimension, or has a subsurface fluid distribution system); ii. Commercially manufactured pre-cast or pre-built proprietary subsurface detention vaults, chambers, or other devices designed to capture and infiltrate stormwater flow; and iii. Drywells, seepage pits, or improved sinkholes (if stormwater is directed to any bored, drilled, driven shaft or dug hole that is deeper than its widest surface dimension, or has a subsurface fluid distribution system). 7.2.10 SWPPP Certification. You must sign and date your SWPPP in accordance with Appendix I, Part 1.11. 7.2.11 Post-Authorization Additions to the SWPPP. Once you are authorized for coverage under this permit, you must include the following documents as part of your SWPPP: a.. A copy of your NOI submitted to EPA along with any correspondence exchanged between you and EPA related to coverage under this permit; b. A copy of the acknowledgment letter you receive from NeT assigning your NPDES ID (i.e., permit tracking number); c. A copy of this permit (an electronic copy easily available to the stormwater team is also acceptable). 7.3 ON-SITE AVAILABILITY OF YOUR SWPPP You must keep a current copy of your SWPPP at the site or at an easily accessible location so that it can be made available at the time of an on-site inspection or upon request by EPA; a state, tribal, or local agency approving stormwater management plans; the operator of a storm sewer system receiving discharges from the site; or representatives of the U.S. Fish and Wildlife Service (USFWS) or the National Marine Fisheries Service (NMFS). EPA may provide access to portions of your SWPPP to a member of the public upon request. Confidential Business Information (CBI) will be withheld from the public, but may not be withheld from EPA, USFWS, or NMFS.60 If an on-site location is unavailable to keep the SWPPP when no personnel are present, notice of the plan's location must be posted near the main entrance of your construction site. 7.4 SWPPP MODIFICATIONS 60 Information covered by a claim of confidentiality will be disclosed by EPA only to the extent of, and by means of, the procedures set forth in 40 CFR Part 2,Subpart B. In general,submitted information protected by a business confidentiality claim may be disclosed to other employees, officers, or authorized representatives of the United States concerned with implementing the CWA.The authorized representatives, including employees of other executive branch agencies, may review CBI during the course of reviewing draft regulations. Page 32 2017 Construction General Permit (CGP) (as modified) 7.4.1 You must modify your SWPPP, including the site map(s), within seven (7) days of any of the following conditions: a.. Whenever new operators become active in construction activities on your site, or you make changes to your construction plans, stormwater controls, or other activities at your site that are no longer accurately reflected in your SWPPP. This includes changes made in response to corrective actions triggered under Part 5. You do not need to modify your SWPPP if the estimated dates in Part 7.2.3f change during the course of construction; b. To reflect areas on your site map where operational control has been transferred (and the date of transfer) since initiating permit coverage; c. If inspections or investigations by EPA or its authorized representatives determine that SWPPP modifications are necessary for compliance with this permit; d. Where EPA determines it is necessary to install and/or implement additional controls at your site in order to meet the requirements of this permit, the following must be included in your SWPPP: i. A copy of any correspondence describing such measures and requirements; and ii. A description of the controls that will be used to meet such requirements. e. To reflect any revisions to applicable federal, state, tribal, or local requirements that affect the stormwater controls implemented at the site; and f. If applicable, if a change in chemical treatment systems or chemically enhanced stormwater control is made, including use of a different treatment chemical, different dosage rate, or different area of application. 7.4.2 You must maintain records showing the dates of all SWPPP modifications.The records must include the name of the person authorizing each change (see Part 7.2.10 above) and a brief summary of all changes. 7.4.3 All modifications made to the SWPPP consistent with Part 7.4 must be authorized by a person identified in Appendix I, Part 1.1 l.b. 7.4.4 Upon determining that a modification to your SWPPP is required, if there are multiple operators covered under this permit, you must immediately notify any operators who may be impacted by the change to the SWPPP. 8 HOW TO TERMINATE COVERAGE Until you terminate coverage under this permit, you must comply with all conditions and effluent limitations in the permit. To terminate permit coverage, you must submit to EPA a complete and accurate Notice of Termination (NOT), which certifies that you have met the requirements for terminating in Part 8. 8.1 MINIMUM INFORMATION REQUIRED IN NOT 8.1.1 NPDES ID (i.e., permit tracking number) provided by EPA when you received coverage under this permit; 8.1.2 Basis for submission of the NOT (see Part 8.2); 8.1.3 Operator contact information; 8.1.4 Name of site and address (or a description of location if no street address is available); and Page 33 2017 Construction General Permit (CGP) (as modified) 8.1.5 NOT certification. 8.2 CONDITIONS FOR TERMINATING CGP COVERAGE You must terminate CGP coverage only if one or more of the following conditions has occurred: 8.2.1 You have completed all construction activities at your site and, if applicable, construction support activities covered by this permit (see Part 1.2.1 c), and you have met the following requirements: a.. For any areas that (1) were disturbed during construction, (2) are not covered over by permanent structures, and (3) over which you had control during the construction activities, you have met the requirements for final vegetative or non-vegetative stabilization in Part 2.2.14b; b. You have removed and properly disposed of all construction materials,waste and waste handling devices, and have removed all equipment and vehicles that were used during construction, unless intended for long-term use following your termination of permit coverage; c. You have removed all stormwater controls that were installed and maintained during construction, except those that are intended for long-term use following your termination of permit coverage or those that are biodegradable; and d. You have removed all potential pollutants and pollutant-generating activities associated with construction, unless needed for long-term use following your termination of permit coverage; or 8.2.2 You have transferred control of all areas of the site for which you are responsible under this permit to another operator, and that operator has submitted an NOI and obtained coverage under this permit; or 8.2.3 Coverage under an individual or alternative general NPDES permit has been obtained. 8.3 HOW TO SUBMIT YOUR NOT You must use EPA's NPDES eReporting Tool (NeT) to electronically prepare and submit your NOT for the 2017 CGP. To access NeT, go to h,.i,.l.. s: . . n s s irir ir,..... is it s,..... . . . . . g. ...............i . -tir ...............�:.li...............! ..::::.:............... ..�::.li.............li..�::.li..................: ................!r............... it ii n Waivers from electronic reporting may be granted as specified in Part 1.4.1. If the EPA Regional Office grants you approval to use a paper NOT, and you elect to use it,you must complete the form in Appendix K. 8.4 DEADLINE FOR SUBMITTING THE NOT You must submit your NOT within 30 calendar days after any one of the conditions in Part 8.2 occurs. 8.5 EFFECTIVE DATE OF TERMINATION OF COVERAGE Your authorization to discharge under this permit terminates at midnight of the calendar day that a complete NOT is submitted to EPA. Page 34 2017 Construction General Permit (CGP) (as modified) 9 PERMIT CONDITIONS APPLICABLE TO SPECIFIC STATES, INDIAN COUNTRY LANDS, OR TERRITORIES The provisions in this Part provide modifications or additions to the applicable conditions of this permit to reflect specific additional conditions required as part of the state or tribal CWA Section 401 certification process, or the Coastal Zone Management Act (CZMA) certification process, or as otherwise established by the permitting authority.The specific additional revisions and requirements only apply to activities in those specific states, Indian country, and areas in certain states subject to construction projects by Federal Operators.States, Indian country, and areas subject to construction by Federal Operators not included in this Part do not have any modifications or additions to the applicable conditions of this permit. 9.1 EPA Region 1 9.1.1 NHR100000 State of New Hampshire a. If you disturb 100,000 square feet or more of contiguous area, you must also apply for an Alteration of Terrain (AoT) permit from DES pursuant to RSA 485-A:17 and Env-Wq 1500.This requirement also applies to a lower disturbance threshold of 50,000 square feet or more when construction occurs within the protected shoreline under the Shoreland Water Quality Protection Act (see RSA 483-B and Env-Wq 1400).A permit application must also be filed if your project disturbs an area of greater than 2,500 square feet, is within 50 feet of any surface water, and has a flow path of 50 feet or longer disturbing a grade of 25 percent or greater. Project sites with disturbances smaller than those discussed above, that have the potential to adversely affect state surface waters, are subject to the conditions of an AoT General Permit by Rule. b. You must determine that any excavation dewatering discharges are not contaminated before they will be authorized as an allowable non-stormwater discharge under this permit (see Part 1.2.2).The water is considered uncontaminated if there is no groundwater contamination within 1,000 feet of the groundwater dewatering location. Information on groundwater contamination can be generated over the Internet via the NHDES web site http://des.nh.gov/ by using the One Stop Data Mapper at htt.............p://des.nh.gov/onestop/ iq's.htm. If it is determined that the groundwater to be dewatered is near a remediation or other waste site you must apply for the Remediation General Permit (see hops://www3.epa._oq v/region 1/npdes/rgp.html.) c. You must treat any uncontaminated excavation dewatering discharges as necessary to remove suspended solids and turbidity.The discharges must be sampled at least once per week during weeks when discharges occur.Samples must be analyzed for total suspended solids (TSS) or turbidity and must meet monthly average and daily maximum limits of 50 milligrams per liter (mg/L) and 100 mg/L, respectively for TSS or 33 mg/I and 67 mg/I, respectively for turbidity.TSS (a.k.a. Residue, Nonfilterable) or turbidity sampling and analysis must be performed in accordance with Tables IB and II in 40 CFR 136.3 (Jb.J[...1pj.flwww.ecfir.goy/cgi- bin text- ........... idx?SI D=0243e3c4283cbd7d8257ebbafc7ce9a2&mc=true&node=se40.25.136 13&r ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................I............................................ qn=div8). Records of any sampling and analysis must be maintained and kept with the SWPPP for at least three years after final site stabilization. d. Construction site owners and operators must consider opportunities for post- construction groundwater recharge using infiltration best management practices Page 35 2017 Construction General Permit (CGP) (as modified) (BMPs) during site design and preparation of the SWPPP. If your construction site is in a town that is required to obtain coverage under the NPDES General Permit for discharges from Municipal Separate Storm Sewer Systems (MS4) you may be required to use such practices.The SWPPP must include a description of any on-site infiltration that will be installed as apost-construction stormwater management measure or reasons for not employing such measures such as 1) The facility is located in a wellhead protection area as defined in RSA 485-C:2; or 2) The facility is located in an area where groundwater has been reclassified to GAA, GAI or GA2 pursuant to RSA 485-C and Env-DW 901; or 3) Any areas that would be exempt from the groundwater recharge requirements contained in Env-Wq 1507.04, including all land uses or activities considered to be a "High-load Area" (see Env- Wq 1502.30). For design considerations for infiltration measures see Env-Wq 1508.06. e. Appendix F contains a list of Tier 2, or high quality waters. Although there is no official list of tier 2 waters, it can be assumed that all NH surface waters are tier 2 for turbidity unless 1) the surface water that you are proposing to discharge into is listed as impaired for turbidity in the states listing of impaired waters (see Surface Water Quality- Watershed Report Cards at http://des.nh.gov/organization/divisions/water/wmb/swga/report cards.htm) or 2) sampling upstream of the proposed discharge location shows turbidity values greater than 10 NTU. A single grab sample collected during dry weather (no precipitation within 48 hours) is acceptable. f. To ensure compliance with RSA 485-C, RSA 485-A, RSA 485-A:13, I(a), Env-Wq 1700 and Env-Wq 302, the following information may be requested by NHDES.This information must be kept on site unless you receive a written request from NHDES that it be sent to the address shown in Part 9.1.4 (g). i. A site map required in Part 7.2.4, showing the type and location of all post- construction infiltration BMPs utilized at the facility or the reasons) why none were installed; ii. A list of all non-stormwater discharges that occur at the facility, including their source locations and the control measures being used (see Part 1.2.2). iii. Records of sampling and analysis of TSS required for construction dewatering discharges (see Part 9.1.4 (c)). g. All required or requested documents must be sent to: NH Department of Environmental Services, Wastewater Engineering Bureau, Permits & Compliance Section P.O. Box 95 Concord, NH 03302-0095 9.1.2 VTR10F000 Areas in the State of Vermont subject to construction by a Federal Operator a. Earth disturbance at any one time is limited to five acres. b. All areas of earth disturbance must have temporary or final stabilization within 14 days of the initial disturbance. After this time, disturbed areas must be temporarily or permanently stabilized in advance of any runoff producing event. A runoff producing event is an event that produces runoff from the construction site. Temporary stabilization is not required if the work is occurring in aself-contained Page 36 2017 Construction General Permit (CGP) (as modified) excavation (i.e. no outlet) with a depth of two feet or greater (e.g. house foundation excavation, utility trenches). Areas of a construction site that drain to sediment basins are not considered eligible for this exemption, and the exemption applies only to the excavated area itself. c. The use of the cationic polymers is prohibited unless approved under asite-specific plan. d. Site inspections on active construction sites shall be conducted daily during the period from October 15-April 15. e. Any applicant under EPA's CGP shall allow authorized Agency representatives, at reasonable times and upon presentation of credentials, to enter upon the project site for purposes of inspecting the project and determining compliance with this Certification. f. The Agency may reopen and alter or amend the conditions of this Certification over the life of the project when such action is necessary to assure compliance with the VWQS. 9.2 EPA Region 3 9.2.1 DCR100000 District of Columbia a. The permittee must comply with the District of Columbia Water Pollution Control Act of 1984, as amended, (D.C. Official Code § 8-103.01 et seq.) and its implementing regulations in Title 21, Chapters 1 1 and 19 of the District of Columbia Municipal Regulations. Nothing in this permit will be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties established pursuant to District of Columbia laws and regulations. b. The permittee must comply with the District of Columbia Stormwater Management, and Soil Erosion and Sediment Control in Chapter 5 of Title 21 of the District of Columbia Municipal Regulations. c. The permittee must comply with District of Columbia Flood Management control in Chapter 31 of Title 20 of the District of Columbia Municipal Regulations. d. The Department may request a copy of the Stormwater Pollution Prevention Plan (SWPPP) and the permittee is required to submit the SWPPP to the Department within 14 days of such request. The Department may conduct an inspection of any facility covered by this permit to ensure compliance with District's law requirements, including water quality standards. The Department may enforce its certification conditions. e. The Department may require the permittee to perform water quality monitoring during the permit term if monitoring is necessary for the protection of public health or the environment as designated under the authority in Chapter 19 of Title 21 of the District of Columbia Municipal Regulations. f. The Department may require the permittee to provide measurable verification of the effectiveness of Best Management Practices (BMPs) and other control measures used in the stormwater management program, including water quality monitoring. g. The Department has determined that compliance with this permit does not protect the permittee from enforcement actions deemed necessary by the Department Page 37 2017 Construction General Permit (CGP) (as modified) under its associated regulations to address an imminent threat to public health or a significant adverse environmental impact which results in a violation of the District of Columbia Water Pollution Control Act of 1984, as amended, (D.C. Official Code § 8-103.01 et seq.) and its implementing regulations. h. The Department reserves the right to modify this Section 401 Water Quality Certification if any changes, modifications, or deletions are made to this general permit. In addition, the Department reserves the right to add and/or alter the terms and conditions of this Section 401 Water Quality Certification to carry out its responsibilities during the term of this general permit with respect to water quality, including any revisions to District of Columbia Water Quality Standards in Chapter 1 1 of Title 21 of the District of Columbia Municipal Regulations. i. Should any violation of the District's Water Quality Standards, or the conditions of this Section 401 Water Quality Certification occur, the Department will direct the permittee to correct the violation(s). The Department has the right to take any action as authorized by the District laws and regulations to address the violations of this permit or the Water Pollution Control Act and implementing regulations. Substantial civil and criminal penalties are authorized for discharging into District waters in violation of an order or permit issued by the Department. This Section 401 Water Quality Certification does not relieve the permittee of the duty to comply with other applicable District's statutes and regulations. j. The permittee must submit copies of Notice of Intent (NOI) and Notice of Termination to DOEE at the same time these documents are submitted to EPA. k. The permittee shall allow DOEE to inspect any facilities, equipment, practices, or operations regulated or required under this permit and to access records maintained under the conditions of this permit. I. All required or requested documents shall be signed and sent to the: Department of Energy & Environment, 1200 First Street, N.E., 5th Floor, Washington, DC 20002, Attention:Associate Director, Inspection and Enforcement Division. 9.2.2 DER10F000 Areas in the State of Delaware subject to construction by a Federal Operator a. Federal agencies engaging in construction activities must submit, to DNREC, a sediment and stormwater management (S&S) plan and obtain approval from DNREC in accordance with 7 Del. C. §4010, 7 DE Admin. Code 5101, and 7 DE Admin. Code 7201. b. Federal agencies engaging in construction activities must provide for construction review by a certified construction reviewer in accordance with 7 Del. C. §§4010 & 4013 and 7 DE Admin. Code 5101, subsection 6.1.6. c. Federal agencies engaging in construction activities must certify that all responsible personnel involved in the construction project will have attended the blue card training prior to initiation of any land disturbing activity-see 7 Del. C. §§ 4002 &4014 and 7 DE Admin. Code 5101. Page 38 2017 Construction General Permit (CGP) (as modified) 9.3 EPA Region 5 9.3.1 MNR101000 Indian country within the State of Minnesota 9.3.1.1 Fond du Lac Band of Lake Superior Chippewa.The following conditions apply only to discharges on the Fond du Lac Band of Lake Superior Chippewa Reservation: a. A copy of the Stormwater Pollution Prevention Plan (SWPPP) must be submitted to the Office of Water Protection at least fifteen (15) days in advance of sending the Notice of Intent (NOI) to EPA.The SWPPP can be submitted electronically to richardgitar@FDLREZ.com or by hardcopy sent to: Fond du Lac Reservation Office of Water Protection 1720 Big Lake Road Cloquet, MN 55720 CGP applicants are encouraged to work with the FDL Office of Water Protection in the identification of all proposed receiving. b. Copies of the Notice of Intent (NOI) and the Notice of Termination (NOT) must be sent to the Fond du Lac Office of Water Protection at the same time they are submitted to EPA. c. The turbidity limit shall NOT exceed 10%of natural background within the receiving water(s) as determined by Office of Water Protection staff. d. Turbidity sampling must take place within 24 hours of a Y2-inch or greater rainfall event.The results of the sampling must be reported to the Office of Water Protection within 7 days of the sample collection. All sample reporting must include the date and time, location (GPS: UTM/Zone 15), and NTU. CGP applicants are encouraged to work with the Office of Water Protection in determining the most appropriate location(s) for sampling. e. Receiving waters with open water must be sampled for turbidity prior to any authorized discharge as determined by Office of Water Protection staff. This requirement only applies to receiving waters in which no ambient turbidity data exists. f. This Certification does not pertain to any new discharge to Outstanding Reservation Resource Waters (ORRW) as described in §105 b.3. of the Fond du Lac Water Quality Standards (Ordinance #12/98, as amended). Although additional waters may be designated in the future, currently Perch Lake, Rice Portage Lake, Miller Lake, Deadfish Lake, and Jaskari Lake are designated as ORRWs. New dischargers wishing to discharge to an ORRW must obtain an individual permit from EPA for stormwater discharges from large and small construction activities. g. All work shall be carried out in such a manner as will prevent violations of water quality criteria as stated in the Water Quality Standards of the Fond du Lac Reservation, Ordinance 12/98, as amended.This includes, but is not limited to, the prevention of any discharge that causes a condition in which visible solids, bottom deposits, or turbidity impairs the usefulness of water of the Fond du Lac Reservation for any of the uses designated in the Water Quality Standards of the Fond du Lac Reservation.These uses include wildlife, aquatic life,warm water fisheries, cold water fisheries, subsistence fishing (netting), primary contact recreation, secondary Page 39 2017 Construction General Permit (CGP) (as modified) contact recreation, cultural,wild rice areas, aesthetic waters, agriculture, navigation, and commercial. h. Appropriate steps shall be taken to ensure that petroleum products or other chemical pollutants are prevented from entering waters of the Fond du Lac Reservation. All spills must be reported to the appropriate emergency management agency (National Response Center AND the State Duty Officer), and measures shall be taken immediately to prevent the pollution of waters of the Fond du Lac Reservation, including groundwater. The Fond du Lac Office of Water Protection must also be notified immediately of any spill regardless of size. i. This certification does not authorize impacts to cultural, historical, or archeological features or sites, or properties that may be eligible for such listing. 9.3.1.2 Grand Portage Band of Lake Superior Chippewa. The following conditions apply only to discharges on the Grand Portage Band of Lake Superior Chippewa Reservation: a. The CGP authorization is for construction activities that may occur within the exterior boundaries of the Grand Portage Reservation in accordance to the Grand Portage Land Use Ordinance.The CGP regulates stormwater discharges associated with construction sites of one acre or more in size. Only those activities specifically authorized by the CGP are authorized by this certification (the "Certification"). This Certification does not authorize impacts to cultural, historical, or archeological features or sites, or properties that may be eligible for listing as such. b. All construction stormwater discharges authorized by the CGP must comply with the Water Quality Standards and Water Resources Ordinance, as well as Applicable Federal Standards (as defined in the Water Resources Ordinance). As such, appropriate steps must be taken to ensure that petroleum products or other chemical pollutants are prevented from entering the Waters of the Reservation (as defined in the Water Resources Ordinance). All spills must be reported to the appropriate emergency-management agency, and measures must be taken to prevent the pollution of the Waters of the Reservation, including groundwater. c. The 2017 CGP requires inspections and monitoring reports of the construction site stormwater discharges by a qualified person. Monitoring and inspection reports must comply with the minimum requirements contained in the 2017 CGP. The monitoring plan must be prepared and incorporated into the Stormwater Pollution Prevention Plan (the "SWPPP"). A copy of the SWPPP must be submitted to the Board at least 30 days in advance of sending the requisite Notice of Intent to EPA. The SWPPP should be sent to: Grand Portage Environmental Resources Board P.O. Box 428 Grand Portage, MN 55605 Copies of the Notice of Intent and Notice of Termination required under the CGP must be submitted to the Board at the address above at the same time they are submitted to the EPA. d. If requested by the Grand Portage Environmental Department, the permittee must provide additional information necessary for a case-by-case eligibility determination to assure compliance with the Water Quality Standards and any Applicable Federal Standards. Page 40 2017 Construction General Permit (CGP) (as modified) e. Discharges that the Board has determined to be or that may reasonably be expected to be contributing to a violation of Water Quality Standards or Applicable Federal Standards are not authorized by this Certification. f. The Board retains full authority provided by the Water Resources Ordinance to ensure compliance with and to enforce the provisions of the Water Resource Ordinance and Water Quality Standards, Applicable Federal Standards, and these Certification conditions. g. Appeals related to Board actions taken in accordance with any of the preceding conditions may be heard by the Grand Portage Tribal Court. 9.3.2 WIR101000 Indian country within the State of Wisconsin, except the Sokaogon Chippewa (Mole Lake) Community 9.3.2.1 Bad River Band of Lake Superior Tribe of Chippewa Indians: The following conditions apply only to discharges on the Bad River Band of the Lake Superior Tribe of Chippewa Indians Reservation: a. Only those activities specifically authorized by the CGP are authorized by this Certification. This Certification does not authorize impacts to cultural properties, or historical sites, or properties that may be eligible for listing as such.61,62 b. All projects which are eligible for coverage under the CGP and are located within the exterior boundaries of the Bad River Reservation shall be implemented in such a manner that is consistent with the Tribe's Water Quality Standards (WQS) in order to protect Reservations waters that may be impacted by stormwater discharge including embankments, outlets, adjacent streambanks, slopes, and downstream waters.63 c. Operators are not eligible to obtain authorization under the CGP for all new discharges to an Outstanding Tribal Resource Water (or Tier 3 water).64 Outstanding Tribal Resource Waters, or Tier 3 waters, include the following: Kakagon Slough and the lower wetland reaches of its tributaries that support wild rice, Kakagon River, Bad River Slough, Honest John Lake, Bog Lake, a portion of Bad River, from where it enters the Reservation through the confluence with the White River, and Potato River.6s d. An operator proposing to discharge to an Outstanding Resource Water (or Tier 2.5 water) under the CGP must comply with the antidegradation provisions of the Tribe's WQS. Outstanding Resource Waters, or Tier 2.5 waters, include the following: a portion of Bad River, from downstream the confluence with the White River to Lake Superior, White River, Marengo River, Graveyard Creek, Bear Trap Creek, Wood Creek, Brunsweiler River, Tyler Forks, Bell Creek, and Vaughn Creek.66 The antidegradation demonstration materials described in provision E.4.iii. must be submitted to the following address: 61 Bad River Band of Lake Superior Tribe of Chippewa Indians Water Quality Standards adopted by Resolution No. 7-6-1 1-441 (hereafter,Tribe's WQS). 62 36 C.F.R. § 800.16(1)(2). 63See footnote 61. 64 Tribe's WQS:See provisions E.3.ii. and E.4.iv. 65 Tribe's WQS:See provision E.2.iii. 66 Tribe's WQS:See provision E.2.ii. Page 41 2017 Construction General Permit (CGP) (as modified) Bad River Tribe's Natural Resources Department Attn: Water Resources Specialist P.O. Box 39 Odanah, WI 54861 e. An operator proposing to discharge to an Exceptional Resource Water (or Tier 2 water) under the CGP must comply with the antidegradation provisions of the Tribe's WQS. Exceptional Resource Waters, or Tier 2 waters, include the following: any surface water within the exterior boundaries of the Reservation that is not specifically classified as an Outstanding Resource Water (Tier 2.5 water) or an Outstanding Tribal Resource Water (Tier 3 water).67 The antidegradation demonstration materials described in provision E.4.ii. must be submitted to the following address: Bad River Tribe's Natural Resources Department Attn: Water Resources Specialist P.O. Box 39 Odanah, WI 54861 f. Projects utilizing cationic treatment chemicals68 within the Bad River Reservation boundaries are not eligible for coverage under the CGP.69 g. A discharge to a surface water within the Bad River Reservation boundaries shall not cause or contribute to an exceedance of the turbidity criterion included in the Tribe's WQS, which states: Turbidity shall not exceed 5 NTU over natural background turbidity when the background turbidity is 50 NTU or less, or turbidity shall not increase more than 1 Oho when the background turbidity is more than 50 NTU.70 h. All projects which are eligible for coverage under the CGP within the exterior boundaries of the Bad River Reservation must comply with the Bad River Reservation Wetland and Watercourse Protection Ordinance, or Chapter 323 of the Bad River Tribal Ordinances, including the erosion and sedimentation control, natural buffer, and stabilization requirements. Questions regarding Chapter 323 and requests for permit applications can be directed to the Wetlands Specialist in the Tribe's Natural Resources Department at (715) 682-7123 or................................�:....................! ................. ... ..............................irii...........................1r::::::, i. An operator of a project,which is eligible for coverage under the CGP, that would result in an allowable discharge under the CGP occurring within the exterior boundaries of the Bad River Reservation must notify the Tribe prior to the commencing earth-disturbing activities.71,72 The operator must submit a copy of the Notice of Intent (NOI) to the following addresses at the same time it is submitted to the U.S. EPA: 67 Tribe's WQS:See provision E.2.i. 68 See definition of cationic treatment chemicals in Appendix A of the CGP. 69 Tribe's WQS:See provisions E.6.ii.a. and E.6.ii.c. 70 Tribe's WQS:See provision E.7.iii. 71 See footnote 61. 72 See footnote 62. Page 42 2017 Construction General Permit (CGP) (as modified) Bad River Tribe's Natural Resources Department Attn: Water Resources Specialist P.O. Box 39 Odanah, WI 54861 Bad River Tribe's Natural Resources Department Attn:Tribal Historic Preservation Officer (THPO) P.O. Box 39 Odanah, WI 54861 The operator must also submit a copy of the Notice of Termination (NOT) to the above addresses at the same time it is submitted to the U.S. EPA. j. The Tribal Historic Preservation Officer (THPO) must be provided 30 days to comment on the project.73 k. The operator must obtain THPO concurrence in writing. This written concurrence will outline measures to be taken to prevent or mitigate effects to historic properties. For more information regarding the specifics of the cultural resources process, see 36 CFR Part 800. A best practice for an operator is to consult with the THPO during the planning stages of an undertaking.74 I. An operator of a project,which is eligible for coverage under the CGP, that would result in an allowable discharge under the CGP occurring within the exterior boundaries of the Bad River Reservation must submit a copy of the Stormwater Pollution Prevention Plan (SWPPP) to the following address at the same time as submitting the NOI:75 Bad River Tribe's Natural Resources Department Attn: Water Resources Specialist P.O. Box 39 Odanah, WI 54861 m. Any corrective action reports that are required under the CGP must be submitted to the following address within one (1) working day of the report completion:76 Bad River Tribe's Natural Resources Department P.O. Box 39 Odanah, WI 54861 n. An operator shall be responsible for meeting any additional permit requirements imposed by the U.S. EPA necessary to comply with the Tribe's antidegradation policies if the discharge point is located upstream of waters designated by the Tribe.77 73 36 C.F.R. § 800.3(c)(4). 7436 C.F.R. § 800.3(b). 75 See footnote 61. 76 See footnote 61. 77 See footnote 61. Page 43 2017 Construction General Permit (CGP) (as modified) 9.3.2.2 Lac du Flambeau Band of Lake Superior Tribe of Chippewa Indians: The following conditions apply only to discharges on the Lac du Flambeau Band of the Lake Superior Tribe of Chippewa Indians Reservation: a. A copy of the Stormwater Pollution Prevention Plan must be submitted to the following office, for the Traival environmental review process, at least thirty (30) days in advance of sending the Notice of Intent (NOI) to EPA: Lac du Flambeau Tribal Land Management P.O. Box 279 Lac du Flambeau, WI 54538 CGP applicants are encouraged to work with the LdF Water Resources Program in the identification of all proposed receiving waters. b. Copies of the NOI and the Notice of Termination (NOT) must be sent to the LdF Water Resources Program at the same time they are submitted to EPA. c. All work shall be carried out in such a manner as will prevent violations of water quality criteria as stated in the Water Quality Standards of the Lac du Flambeau Reservation. This includes, but is not limited to, the prevention of any discharge that cause a condition in which visible solids, bottom deposits, or turbidity impairs the usefulness of water of the Lac du Flambeau Reservation for any of the uses designated in the Water Quality Standards of the Lac du Flambeau Reservation. d. Appropriate steps shall be taken to ensure that petroleum products or other chemical pollutants are prevented from entering waters of the Lac du Flambeau Reservation. All spills must be reported to the appropriate emergency management agency, and measures shall be taken immediately to prevent the pollution of waters of the Lac du Flambeau reservation, including groundwater. e. This certification does not authorize impacts to cultural, historical, or archeological features or sties, or properties that may be eligible for such listing. f. Due to the significant ecological and cultural importance of the Lac du Flambeau Reservation, any operator requesting a permit for a point source discharge of pollutants (i.e., discharge) associated with the Stormwater Discharge will need a stormwater pollution prevention plan in place that does not violate Lac du Flambeau Water Quality Standards to protect Reservation Waters. 9.4 EPA Region 6 9.4.1 NMR100000 State of New Mexico, except Indian country a. If construction dewatering activities are anticipated at a site, permittees must complete the following steps: i. Investigative information must be documented in the facility SWPPP. ii. Refer to the GWQB Mapper at,. ..:t„„ ...... ®„ ...... is. n .nm. AND the PSTB Mapper (Go Mapper) at https://gis.web.env.nm.gov/GoNM/ Page 44 2017 Construction General Permit (CGP) (as modified) and check if the following sources are located within the noted distance from your anticipated construct site groundwater dewatering activity: Project Location Relative to a Source of Constituents likely to be required for Potential Groundwater Contamination testing Within 0.5 mile of an open Leaking BTEX (Benzene, Toluene, Ethylbenzene, Underground Storage Tank (LUST) site and Xylene) plus additional parameters depending on site conditions.* Within 0.5 mile of an open Voluntary All parameters listed in Appendix A (or Remediation site an alternate list approved by the NMED Within 0.5 mile of an open RCRA SWQB)** Corrective Action Site Within 0.5 mile of an open Abatement Site Within 0.5 mile of an open Brownfield Site Within 1.0 mile or more of a Superfund site or National Priorities List (NPL) site with associated groundwater contamination. *For further assistance determining whether dewatering may encounter impacted groundwater, the permittee may contact the NMED Ground Water Quality Bureau at: 505-827-2965. **EPA approved-sufficiently sensitive methods must be used-approved methods are listed in 40 CFR Part 136.3. ii. Indicate on the NOI that dewatering activities are anticipated. Provide information on flow and potential to encounter impacted groundwater. iii. Permittee must test the quality of the groundwater according to the chart above. Hardness and pH must also be measured. iv. Permittee must send test result data to EPA Region 6 and the NMED Surface Water Quality Bureau. If the test data exceed standards, it cannot be discharged from the construction site into surface waters under this permit. Discharge to surface waters must be conducted under a separate NPDES individual permit to ensure proper treatment and disposal. V. If disposal will be to the ground surface or in an unlined pond, the permittee must submit an NO/ to the NMED Ground Water Quality Bureau. b. Operators are not eligible to obtain authorization under this permit for all new and existing storm water discharges to outstanding national resource waters (ONRWs) (also referred to as''Tier 3"waters.) c. Operators who intend to obtain authorization under this permit for new and existing storm water discharges from construction sites must satisfy the following condition: i. The SWPPP must include site-specific interim and permanent stabilization, managerial, and structural solids, erosion and sediment control best management practices (BMPs) and/or other controls that are designed to prevent to the maximum extent practicable an increase in the sediment yield and flow velocity from pre-construction, pre-development conditions to assure that applicable standards in 20.6.4.NMAC, including the antidegradation policy, or TMDL waste load allocations (WLAs) are met. This requirement applies to discharges both during construction and after construction operations have been completed. The SWPPP must identify Page 45 2017 Construction General Permit (CGP) (as modified) and document the rationale for selecting these BMPs and/or other controls. The SWPPP must also describe design specifications, construction specifications, maintenance schedules (including a long term maintenance plan), criteria for inspections, and expected performance and longevity of these BMPs. For sites greater than 5 acres in size, BMP selection must be made based on the use of appropriate soil loss prediction models (i.e.SEDCAD, RUSLE,SEDIMOT, MULTISED, etc.) OR equivalent generally accepted (by professional erosion control specialists) soil loss prediction tools. ii. For all sites, the operator(s) must demonstrate, and include documentation in the SWPPP, that implementation of the site-specific practices will assure that the applicable standards or TMDL WLAs are met, and will result in sediment yields and flow velocities that, to the maximum extent practicable,will not be greater than the sediment yield levels and flow velocities from preconstruction, pre-development conditions. iii. All SWPPPs must be prepared in accordance with good engineering practices by qualified (e.g. CPESC certified, engineers with appropriate training) erosion control specialists familiar with the use of soil loss prediction models and design of erosion and sediment control systems based on these models (or equivalent soil loss prediction tools). Qualifications of the preparer (e.g., professional certifications, description of appropriate training) must be documented in the SWPPP. The operator(s) must design, implement, and maintain BMPs in the manner specified in the SWPPP. d. Permittees can call 505-827-9329 for emergencies at any time and 505-476-6000 for non-emergencies during business hours from 5am-5pm, Monday through Friday. 9.4.2 NMR101000 Indian country within the State of New Mexico, except Navajo Reservation Lands that are covered under Arizona permit AZR101000 and Ute Mountain Reservation Lands that are covered under Colorado permit COR101000. 9.4.2.1 Pueblo of Isleta. The following conditions apply only to discharges on the Pueblo of Isleta Reservation: a. CGP at 1.3 Prohibited discharges:Stormwater discharges associated with construction activity that EPA or the Pueblo of Isleta, prior to authorization under this perm it, determines will cause, have the reasonable potential to cause, or may reasonably be expected to contribute to a violation or excursion of any applicable water quality standard, including the antidegradation policy, or the impairment of a designated use of receiving waters are not authorized by this permit. b. CGP at 1.4.1 How to Submit Your NOI: The operator shall provide a copy of the Notice of Intent ("NOI") to the Pueblo of Isleta at the same time it is submitted to the U.S. Environmental Protection Agency, for projects occurring within the exterior boundaries of the Pueblo of Isleta. The operator shall also notify the Pueblo of Isleta when it has submitted the Notice of Termination ("NOT"). The NOI and NOT shall be sent to the Pueblo of Isleta at the following address: Water Quality Control Officer Pueblo of Isleta Environment Department PO Box 1270 Page 46 2017 Construction General Permit (CGP) (as modified) Isleta, NM 87022 (505) 869-9819 E-mail: P0136871 @isletapueblo.com ............................................................................................................................._Overnight/Express Mail Deliverx Pueblo of Isleta Environment Department 6 Sagebrush St. Albuquerque, NM 87105 c. CGP at 1.5 Requirement to post a notice of your permit coverage: Amend to read:"You must post a sign or other notice of your permit coverage at a safe, publicly accessible location in close proximity to the construction site.The notice must be located so that it is visible from the public road or tribal road that is nearest to the active part of the construction site..." d. CGP at 7.2.6 Description of stormwater controls:The SWPPP will be considered to be incomplete if the operator has not coordinated requirements under this Part with the Pueblo of Isleta Environment Department. e. CGP 1.12.6.1 at pg.1-6 of 8.The Pueblo of Isleta requests notification within 10 hours (rather than 24 hrs.) if health or the environment become endangered. f. CGP at 1.12.2 Anticipated noncompliance: Amend to read:"You must give advance notice to EPA and the Pueblo of Isleta at the address indicated in 1.4.1 (a) of any planned changes in the permitted facility or activity which may results in noncompliance with permit requirements." g. CGP at 1.12.6.1: Any noncompliance for projects within the exterior boundaries of the Pueblo of Isleta which may endanger health or the environment shall be reported directly to the EPA Regional Office [(see contacts at https://www2.e pa.gov/national-pollutant-discharge-elimination-system-npdes/contact-us- stormwater#regional)I and to the Pueblo of Isleta Water Quality Control Officer. Any information must be provided orally with n 12 hours of the time you become aware of the circumstances. Other requirements of this Part for a written submission apply. Electronic communication (E-mail) shall be provided as soon as practical. Verbal notice shall be provided to: Water Quality Control Officer Pueblo of Isleta E-mail: P0136871 @isletapueblo.com (505) 869-9819 (505) 917-8346 mobile (505) 869-3030 Police Dispatch h. CGP at 2.2 Erosion and sediment control requirements: Erosion and sediment controls shall be designed to retain sediment on-site. i. CGP at 2.2 Under Sediment control requirements,Standard Permit Condition Duty to Mitigate Volumes of sediment at or over (five) 5 cubic yards must be removed and placed for disposal within a tribally approved sediment Disposal Site, located on Pueblo of Isleta lands. CGP 2.2 at pg. 8. j. Under Minimize erosion, a permittee must secure permission from the Pueblo or affected Pueblo of Isleta land assignment owner if a dissipation device needs to Page 47 2017 Construction General Permit (CGP) (as modified) be placed up- or down- elevation of a given construction site. CGP 2.2.11 at pg. 11. k. CGP at 2.3.6 Emergency spill notification requirements: You must notify the Pueblo of Isleta Water Quality Control Officer and National Response Center (NRC) [at (800) 424-8802 or, in the Washington, DC metropolitan area, call (202) 267-2675 in accordance with the requirements of 40 CFR 1 10, 40 CFR 1 17, and 40 CFR 302] as soon as you have knowledge of the release. Verbal and electronic notice shall be provided as specified in I.12.6.1 I. CGP at C.3 Equivalent analysis waiver: Parties wishing to apply for an Equivalent Analysis Waiver (see Appendix D, Section C) must provide a copy of the waiver analysis to the Pueblo of Isleta Water Quality Control Officer at the address indicated in 1.4.1 (a). 9.4.2.2 Pueblo of Sandia. The following conditions apply only to discharges on the Pueblo of Sandia Reservation: a. Only those activities specifically authorized by the CGP are authorized by the Pueblo of Sandia's Water Quality certification.The Pueblo of Sandia's Water Quality Certification does not authorize impact to cultural properties, historical sites or properties that may be eligible as such. b. Copies of all Notices of Intent (NOI) submitted to the EPA must also be sent concurrently to the Pueblo of Sandia at the following address. Discharges are not authorized by this permit unless an accurate and complete NOI has been submitted to the Pueblo of Sandia, either by mail or electronically. Regular U.S. Delivery Mail: Pueblo of Sandia Environment Department Attention: Scott Bulgrin, Water Quality Manager 481 Sandia Loop Bernalillo, New Mexico 87004 Electronically. sbulgrin@sandiapueblo.nsn.us c. Any correspondences between the applicant and EPA related to analytical data,written reports, corrective action, enforcement, monitoring, or an adverse incident written reports should likewise be routed to the Pueblo of Sandia at the above address. d. The Stormwater Pollution Prevention Plan (SWPPP) must be available to the Pueblo of Sandia Environment Department either electronically or hard copy upon request for review.The SWPPP must be made available at least fourteen (14) days before construction begins. The fourteen (14) day period will give Pueblo staff time to become familiar with the project site, prepare for construction site inspections, and determine compliance with the Pueblo of Sandia Water Quality Standards. Failure to provide a SWPPP to the Pueblo of Sandia may result in the delay or denial of the construction project. e. If requested by the Pueblo of Sandia Environment Department, the permittee must provide additional information necessary for a case-by-case eligibility determination to assure compliance with the Pueblo of Sandia Water Quality Standards and/or applicable Federal Standards not authorized by this certification. f. An "Authorization to Proceed Letter"with site specific mitigation requirements may Page 48 2017 Construction General Permit (CGP) (as modified) be sent out to the permittee when a review of the NOI and SWPPP, on a case- by- case basis is completed by the Pueblo of Sandia Environment Department.This approval will allow the application to proceed if all mitigation requirements are met. g. The Pueblo of Sandia will not allow Small construction Waivers (Appendix C) or the Rainfall Erosivity Waiver (Appendix C.1) to be granted for any small construction activities. h. Before submitting a Notice of Termination (NOT) to the EPA, permittees must clearly demonstrate to the Pueblo of Sandia Environment Department through a site visit or documentation that requirements for site stabilization have been met and any temporary erosion control structures have been removed. A short letter stating the NOT is acceptable and all requirements have been met will be sent to the permittee to add to the permittee's NOT submission to EPA. i. Copies of all NOT submitted to the EPA must also be sent concurrently to the Pueblo of Sandia through the mail or electronically. Regular U.S. Delivery Mail: Pueblo of Sandia Environment Department Attention: Scott Bulgrin, Water Quality Manager 481 Sandia Loop Bernalillo, New Mexico 87004 Electronically: sbulgrin@sandiapueblo.nsn.us j. The Pueblo of Sandia may require the permittee to perform water quality monitoring for pH, turbidity, and total suspended solids (TSS) during the permit term if the discharge is to a surface water leading to the Rio Grande for the protection of public health and the environment. 9.4.2.3 Pueblo of Santa Ana.The following conditions apply only to discharges on the Pueblo of Santa Ana Reservation: a. The permittee shall provide a copy of the Notice of Intent (NOI) to the Pueblo of Santa Ana (the Pueblo), at the same time it is submitted to the U.S. Environmental Protection Agency (EPA), for projects with discharges onto the lands of the Pueblo as defined in the Pueblo's antidegradation policy within the Pueblo of Santa Ana Water Quality Standards. b. The permittee shall provide a final copy of the Stormwater Pollution Prevention Plan (SWPPP) to the Pueblo that is associated with any project identified in the NOI, at the same time that an NOI is submitted to the EPA.The SWPPP should include any projects with discharges onto the lands of the Pueblo as defined in Page 49 2017 Construction General Permit (CGP) (as modified) the antidegradation policy within the Pueblo of Santa Ana Water Quality Standards. c. The operator shall provide copies of inspections reports and of corrective action reports to the Pueblo at the address below for review, upon request. d. Upon completion of the project identified in the NOI, the permittee will submit a Notice of Termination (NOT) to the Pueblo. e. All required or requested permittee specific information identified above shall be submitted to the following address: Pueblo of Santa Ana Department of Natural Resources, Attention: Water Resources Division 2 Dove Road Santa Ana Pueblo, NM 87004 f. Discharges are not authorized by permittee unless an accurate and complete NOI and SWPPP have been submitted to the Pueblo. Failure to provide an accurate and complete NOI and SWPPP may result in a denial of the discharge permit or a delay in groundbreaking or construction. g. The permittee will not proceed with site work until authorized by the Pueblo. The Pueblo requires review of the complete and final SWPPP before authorization to proceed.The Pueblo will provide an "Authorization to Process" notice after review and approval of the SWPPP. h. The permittee could be required to perform water quality monitoring,sampling or analysis during the active permit dates for constituents determined by the Pueblo. i. Before submitting a NOT, permittees must certify to the Pueblo's Department of Natural Resources in writing that requirements for site stabilization have been met, and any temporary erosion control structures have been removed. Documentation of the Pueblo's review that such requirements have been reviewed and met will be provided for the permittee to add to the permittee's NOT submission to EPA. Copies of all NOT submitted to the EPA must also be sent to the Pueblo at the address provided above. 9.4.2.4 Pueblo of Santa Clara. The following conditions apply only to discharges on the Pueblo of Santa Clara Reservation: a. The operator must provide a copy of the Notice of Intent (NOI) and Notice of Termination (NOT) to the Santa Clara Pueblo Governor's Office at the same time it is provided to the US Environmental Protection Agency. b. A copy of the Storm water Pollution Prevention Plan shall be made available to the Pueblo of Santa Clara staff upon request. 9.4.2.5 Pueblo of Tesuque. The following conditions apply only to discharges on the Pueblo of Tesuque Reservation: a. Based on the Section 401 Certification provisions within the CWA, no discharges that will exceed or cause the exceedance of the Pueblo of Tesuque Water Quality Standards will be allowed within the boundaries of the Pueblo of Tesuque. b. The operator shall provide a copy of the Notice of Intent (NOI) to the Pueblo of Tesuque Governor's Office in care of the Department of Environmental and Natural Resources (DENR) at the same time it is submitted to the Environmental Page 50 2017 Construction General Permit (CGP) (as modified) Protection Agency, for projects occurring within the boundaries of Tesuque tribal lands.The operator shall also notify the Pueblo of Tesuque Governor's Office in care of the DENR when it submits the Notice of Termination (NOT), but not before the DENR post-construction inspection has been completed as described below. The NOI and NOT shall be sent to the following address: Pueblo of Tesuque Office of the Governor Attn: DENR 20 TP828 Administration Bldg. Santa Fe, NM 87506-5512 Alternatively, the operator may arrange with DENR to email the documents. c. The operator shall also provide a copy of the Stormwater Pollution Prevention Plan, copies of inspection reports, and copies of corrective action reports to the DENR. d. Construction requiring this permit will not commence until the above document submissions have been made and DENR provides the operator with notice to proceed. Operators will not demobilize until DENR personnel inspect the site for complication of stabilization. Once the inspection has taken place and all SWPPP- related work has been completed to the satisfaction of DENR, the operator will submit its NOT as described above and then demobilize. 9.4.2.6 Taos Pueblo.The following conditions apply only to discharges on the Taos Pueblo Reservation: a. The operator shall provide a copy of the Notice of Intent (NOI) to the Taos Pueblo Governor's Office, War Chief's Office and Environmental Office, at the same time it is submitted to the U.S. Environmental Protection Agency, for projects occurring within the exterior boundaries of Taos Pueblo. The operator shall also notify Taos Pueblo when it has submitted the Notice of Termination (NOT). The NOI and NOT shall be sent to the Taos Pueblo at the following addresses: i. Taos Pueblo Governor's Office P.O. Box 1846 Taos NM 87571 ii. Taos Pueblo War Chief's Office P.O. Box 2596 Taos NM 87571 iii. Environmental Office Attn: Program Manger P.O. Box 1846 Taos NM 87571 Page 51 2017 Construction General Permit (CGP) (as modified) b. Taos Pueblo requests that in the event Indian artifacts or human remains are inadvertently discovered on projects occurring near or on Taos Pueblo lands that consultation with the tribal Governor's Office occur at the earliest possible time. c. The operator shall provide a copy of the Stormwater Pollution Prevention Plan, copies of inspections reports, and copies of corrective action reports to staff in the Taos Pueblo Environmental Office for review and copy, upon request. 9.4.2.7 Ohkay Owingeh.The following conditions apply only to discharges on the Ohkay Owingeh Reservation: a. Prior to commencement of any construction activity on Ohkay Owingeh Lands requiring permit coverage under EPA's Construction General Permit, the operator(s) shall submit to Ohkay Owingeh Office of Environmental Affairs, a copy of the electronic "Notice of Intent," submitted to the Environmental Protection Agency, immediately following EPA's electronic notification that the NOI has been received. A copy of the Stormwater Pollution Prevention Plan(s) must be made available to the Ohkay Owingeh Office of Environmental Affairs upon the tribe's request either electronically or hard copy. Operator(s) shall also submit to Ohkay Owingeh Office of Environmental Affairs a copy of the electronic Notice of Termination (NOT) submitted to the Environmental Protection Agency. Documents shall be submitted to Ohkay Owingeh at the following address: Ohkay Owingeh Office of Environment Affairs Attention: Environmental Programs Manager P.O. Box 717 Ohkay Owingeh, New Mexico 87566 Office # 505.852.4212 Fax # 505.852.1432 Electronic mail: naomi.archuleta@ohkay.ora b. Ohkay Owingeh will not allow the Rainfall Erosivity Waivers (see Appendix C) to be granted for any small construction activities. c. All vegetation used to prevent soil loss, seeding or planting of the disturbed area to meet the vegetative stabilization requirements must utilize native seeds/vegetation commonly known to the area. All temporary erosion control structures, such as silt fences must be removed as soon as stabilization requirements are met. 9.4.2.8 Pueblo of Laguna.The following conditions apply only to discharges on the Pueblo of Laguna Reservation: a. The operator must provide a paper and electronic copy of the Notice of Intent (NOI) and Notice of Termination (NOT) to the Pueblo of Laguna at the same time it is provided to the U.S. Environmental Protection Agency.The NOI and NOT should be provided to the following address: Pueblo of Laguna, Office of the Governor Attn: Environmental & Natural Resources Department P.O. Box 194 Laguna, NM 87026 Email: setter@pol-nsn.gov b. The operator must provide an electronic copy of the Storm Water Pollution Page 52 2017 Construction General Permit (CGP) (as modified) Prevention Plan to the Pueblo of Laguna Environmental Program at the same time the NOI is submitted to the above listed email addresses. Any correspondences between the applicant and EPA related to analytical data,written reports, corrective action, enforcement, monitoring, or an adverse incident written reports threshold likewise be routed to the Pueblo of Laguna Environmental Program. c. Immediate initiation of consultation with the Pueblo of Laguna is required should any human remains or artifacts be unearthed during the project that fall under the Native American Graves Protection and Repatriation Act guidelines. If human remains are unearthed, contact the Pueblo of Laguna Police Department at 505.552.6666. If artifacts are unearthed, contact the Pueblo of Laguna Tribal Historic Preservation Office at 505.552.5033. 9.4.2.9 Picuris Pueblo. The following conditions apply only to discharges on the Picuris Pueblo Reservation: a. The operator, landowner and construction operators doing earth-disturbance work must meet the definition of "operator" under the Construction General Permit (CGP), and must provide an electronic and paper copy of the Notice of Intent (NOI) and Notice of Termination (NOT) to both The Office of the Picuris Pueblo Governor and the Picuris Pueblo Environmental Department at the same time it is provided to the U.S. Environmental Protection Agency (USEPA).The NOI and NOT should be provided to the following address: Picuris Pueblo The Office of the Governor PO BOX 127 Penasco, NM 87553 575-587-2519 575-587-1071 (Fax) Governor: irn irk icuiris u ®oir Picuris Pueblo Environmental Department PO BOX 158 Penasco, NM 87553 575-587-01 10 575-587-0223 (Fax) Environmental Director:..eiin...........iiir.............1D..! ...............i ..::................ ... iicuiriisp. ................ ....................................1. b. The operator must provide an electronic copy of the Storm Water Pollution Prevention Plan to the Picuris Pueblo Environmental Department at least 30 days prior to submitting the NOI to USEPA and the Picuris Pueblo by email to Picuris Pueblo Environmental Department:...............! .............n y ii,ir..............i !r ...............i ..::. .. iicuiriis .u ................ .....................m...............ir . 9.4.2.10 Pueblo of Pojoaque. The following conditions apply only to discharges on the Pueblo of Pojoaque Reservation: a. The operator, landowner and construction operators doing earth-disturbance work must meet the definition of "operator" under the CGP and must provide a copy of the Notice of Intent (NOI) to the Pueblo of Pojoaque Governor's Office and Environmental Department within 3 days following U.S. Environmental Protection Agency's electronic confirmation that the NOI was certified and submitted and is undergoing its 14-day review period. Additionally, a copy of the Notice of Termination (NOT) must be provided the same day electronic confirmation is Page 53 2017 Construction General Permit (CGP) (as modified) received from the U.S. Environmental Protection Agency that the NOT has been accepted.The NOI and NOT should be provided to the following address: Pueblo of Pojoaque Office of the Governor 78 Cities of Gold Road Santa Fe, NM 87506 Pueblo of Pojoaque Environmental Department 39 Camino Del Rincon Santa Fe, NM 87506 b. The operator must provide an electronic copy of the Stormwater Pollution Prevention Plans to the Pueblo of Pojoaque Environmental Department by email to Adam L Duran (aduran@pojoaque.orq) at least 30 days prior to submitting the NOI to EPA and the Pueblo of Pojoaque. 9.4.2.11 Nambe Pueblo. The following conditions apply only to discharges on Nambe Pueblo: a. The operator must provide a copy of the Notice of Intent (NOI) and Notice of Termination (NOT) to the Nambe Pueblo Governor's Office at the same time it is provided to the US Environmental Protection Agency.The NOI and NOT should be provided to the following address: Office of the Governor Nambe Pueblo 15A N P 102 WEST Nambe Pueblo, NM 87506 b. The operator must provide a copy of the Stormwater Pollution Prevention Plan to Nambe Pueblo at the same time it is submitted to the EPA, either by email to srydeen@nambepueblo.orq or mailed to the above address. 9.4.3 OKR101000 Indian country within the State of Oklahoma 9.4.3.1 Pawnee Nation.The following conditions apply only to discharges within Pawnee Indian country: a. Copies of the Notice of Intent (NOI) and Notice of Termination (NOT) must be provided to the Pawnee Nation at the same time it is submitted to the Environmental Protection Agency to the following address: Pawnee Nation Department of Environmental Conservation and Safety P.O. Box 470 Pawnee, OK 74058 Or email to mmatlock@pawneenation.orq b. The Storm Water Pollution Prevention Plan must be available to Departmental inspectors upon request. c. The Department must be notified at 918-762-3655 immediately upon discovery of any noncompliance with any provision of the permit conditions. Page 54 2017 Construction General Permit (CGP) (as modified) 9.4.4 OKR10F000 Discharges in the State of Oklahoma that are not under the authority of the Oklahoma Department of Environmental Quality, including activities associated with oil and gas exploration, drilling, operations, and pipelines (includes SIC Groups 13 and 46, and SIC codes 492 and 5171), and point source discharges associated with agricultural production, services, and silviculture (includes SIC Groups 01.. 02, 07, 08, 09). a. For activities located within the watershed of any Oklahoma Scenic River, including the Illinois River, Flint Creek, Barren Fork Creek, Upper Mountain Fork, Little Lee Creek, and Lee Creek or any water or watershed designated "ORW" in Oklahoma's Water Quality Standards, this permit may only be used to authorize discharges from temporary construction activities. Certification is denied for any on-going activities such as sand and gravel mining or any other mineral mining. b. For activities located within the watershed of any Oklahoma Scenic River, including the Illinois River, Flint Creek, Barren Fork Creek, Upper Mountain Fork, Little Lee Creek, and Lee Creek or any water or watershed designated "ORW" in Oklahoma's Water Quality Standards, certification is denied for any discharges originating from support activities, including concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, or borrow areas. c. In order to company with Oklahoma's Water Quality Standards, these conditions and restrictions also apply to any construction projects located wholly or partially on Indian Country lands within the State of Oklahoma. 9.5 EPA Region 8 9.5.1 COR101000 Indian country within the State of Colorado, as well as the portion of the Ute Mountain Reservation located in New Mexico. 9.5.1.1 The Ute Mountain Ute Tribe. The following conditions apply only to discharges on the Ute Mountain Ute Reservation. a. Permittees must send the Stormwater Pollution Prevention Plan (SWPPP) to the Tribal Environmental Department for review and approval at least 30 days before construction starts. b. Before submitting the Notice of Termination (NOT), permittees must clearly demonstrate to the Tribal Environmental Department during an on-site inspection that requirements for site stabilization have been met. c. The permittee must send a copy of the Notice of Intent (NOI) and the Tribal Environmental Department. d. Permittees may submit their SWPPPs and NOI and NOT requests electronically to: c�la . . ....................iririi. ... ................... --l:..............irk...............u�..in--l�................ii..l ....R...............ir,g. e. Written NOls,SWPPPs, and NOTs may be mailed to: Colin Larrick, Water Quality Program Manager Ute Mountain Ute Tribe Environmental Department P.O. Box 448 Towaoc, CO 81334 Page 55 2017 Construction General Permit (CGP) (as modified) 9.5.2 MTR101000 Indian country within the State of Montana 9.5.2.1 The Confederated Salish and Kootenai Tribes of the Flathead Nation.The following conditions apply only to discharges on the Confederated Salish and Kootenai Tribes of the Flathead Nation Reservation: a. Permittees must submit the Stormwater Pollution Prevention Plan (SWPPP) to the Confederated Salish and Kootenai Tribes at least 30 days before construction starts. b. Before submitting the Notice of Termination (NOT), permittees must clearly demonstrate to an appointed Tribal staff person during an onsite inspection that requirements for site stabilization have been met. c. The permittee must send a copy of the Notice of Intent (NOI) and the NOT to CSKT. d. Permittees may submit their SWPPPs, NOIs and NOTs electronically to: clintf@cskt.orq. e. Written SWPPPs, NOIs and NOTs may be mailed to: Clint Folden, Water Quality Regulatory Specialist Confederated Salish and Kootenai Tribes Natural Resources Department P.O. Box 278 Pablo, MT 59855 9.6 EPA Region 9 9.6.1 AZR101000 Indian Country within the state of Arizona, as well as Navajo Nation lands in New Mexico and Utah 9.6.1.1 Navajo Nation.The following conditions apply only to discharges on the Navajo Nation reservation: a. Courtesy copies of Notice of Intents and stormwater pollution prevention plans shall be made available to Navajo EPA. b. Copies of all monitoring reports must be provided to Navajo EPA. c. Facilities covered under the CGP will be subject to compliance inspections by Navajo EPA staff with active Federal Inspector Credentials under the authority of the Clean Water Act. d. Specific awareness and adherence to Sections 201 -Anti-degradation Policy, 203- Narrative WQS, and 207.H -Turbidity. 9.6.2 CAR101000 Indian country within the State of California 9.6.2.1 Twenty-Nine Palms Band of Mission Indians.The following conditions apply only to discharges on the Twenty-Nine Palms Band of Mission Indians Reservation: a. At the time the applicant submits its Notice of Intent (NOI) to the EPA, the applicant must concurrently submit written notification of the NOI and a copy of the Stormwater Pollution Prevention Plan (SWPPP) to the Twenty-Nine Palms Band of Mission Indians at the address below: Tribal Environmental Coordinator Twenty-Nine Palms Band of Mission Indians 46-200 Harrison Place Page 56 2017 Construction General Permit (CGP) (as modified) Coachella, CA 92236 b. The applicant must also concurrently submit to the Tribal Environmental Coordinator written notification of any other forms or information submitted to the EPA, including waivers, reporting, and Notice of Termination (NOT). c. Permitted entities under the CGP must keep the Tribal EPA informed of authorized discharges under the CGP by submitting written information about the type, quantity, frequency and location, intended purpose, and potential human health and/or environmental effects of their activities.These requirements are pursuant to Section 4 of the Twenty-Nine Palms Band of Mission Indians Water Pollution Control Ordinance (022405A).This information may be submitted to Tribal EPA in the form of Stormwater Pollution Prevention Plans (SWPPPs), monitoring reports, or other reports as required under the CGP.Spills, leaks, or unpermitted discharges must be reported in writing to Tribal EPA within 24 hours of the incident. 9.6.2.2 Morongo Band of Mission Indians.The following conditions apply only to discharges on the Morongo Band of Mission Indians Reservation: a. This certification does not exempt, and is provisional upon compliance with, other applicable statutes and codes administered by federal and tribal agencies. Pursuant to the Morongo Band of Mission Indians Surface Water Quality Protection Ordinance (Ordinance 39), all unpermitted discharges must be reported to the Morongo Band of Mission Indians Environmental Protection Department (Morongo EPD) within 24 hours of the incident. b. Each operator shall submit a signed hard copy of the Notice of Intent (NOI) and stormwater pollution prevention plan (SWPPP) to the Morongo EPD at the same time it is submitted electronically to the EPA. c. The operator shall allow the Morongo EPD or its designee to inspect and sample at the construction site as needed. Correspondence should be submitted to: Morongo Band of Mission Indians Environmental Protection Department 12700 Pumarra Road Banning, CA 92220 Phone: (951) 755-5128 Email: .e pd@morongo-nsn.gov 9.6.3 GUR100000 Island of Guam.The following conditions apply only to discharges on the Island of Guam: a. Any earth-moving operations which require a permit must be obtained from the Department of Public Works (DPW) with clearance approval from various Government of Guam Agencies including Guam EPA prior to the start of any earth- moving activity. b. In the event that the construction sites are within the Guam Sole Source Aquifer, the construction site owner and operator must consider opportunities to facilitate groundwater recharge for construction and post-construction implementing infiltration Best Management Practices.Stormwater disposal systems shall be designed and operated within the boundaries of the project.Stormwater systems shall not be permitted within any Wellhead Protection Zone unless the discharge meets the Guam Water Quality Standards within the zone. Waters discharged Page 57 2017 Construction General Permit (CGP) (as modified) within the identified category G-2 recharge zone shall receive treatment to the degree required to protect the drinking water quality prior to it entering the category G-1 resource zone. c. All conditions and requirements set forth in the 22 Guam Administrative Rules and Regulations (GARR), Division II, Water Control, Chapter 10, Guam Soil Erosion and Sediment Control Regulations (GSESCR) that are more protective than the CGP regarding construction activities must be complied with. d. All standards and requirements set forth in the 22 GARR, Division II, Water Control, Chapter 5, Guam Water Quality Standards (GWQS) 2001 Revisions, must be complied with to include reporting GWQS exceedance to Guam EPA. e. All operators/owners of any property development or earth moving activities shall comply with the erosion control pre-construction and post-construction BMP design performance standards and criteria set forth in the 2006 CNMI and Guam Stormwater Management Manual. f. All conditions and requirements regarding dewatering activities set forth in 22 Guam Administrative Rules and Regulations Chapter 7, Water Resources Development and Operating Regulations must be complied with to include securing permits with Guam EPA prior to the start of any dewatering activities. g. If a project to be developed is covered under the Federal Stormwater Regulations (40 CFR Parts 122 & 123), a Notice of Intent (NOI) to discharge stormwater to the surface and marine waters of Guam must be submitted to the U.S. EPA and a copy furnished to Guam EPA, pursuant to Section 10, 104(B)(5)(d) 22GAR, Division II, Chapter 10. h. Guam EPA shall apply the Buffer Requirements listed in Appendix G of the CGP NPDES Permit for construction activities as it pertains to Waters of the U.S. in Guam. Guam EPA shall also apply the same buffer requirements for sinkholes in Guam. i. When Guam EPA, through its permit review process, identifies that the proposed construction activity is close proximity to marine waters, contractors and owners will be informed that any activity that may impair water quality are required to stop during peak coral spawning periods as per the Guam Coral Spawning Construction Moratoriums. j. The Proposed Construction General Permit must set appropriate measures and conditions to protect Guam's Threatened and Endangered Species and Outstanding Resource Waters of exceptional recreational or ecological significance as determined by the Guam EPA Administrator as per Guam Water Quality Standards 2001 Revisions, §5102, Categories of Waters, D. Outstanding Resource Waters. k. When Guam EPA through its permit review process identifies that proposed construction activity is in close proximity to any Section 303d impaired waters, which includes marine waters and surface waters, shall ensure that construction activity does not increase the impaired water's ambient parameters. I. When Rainfall Erosivity and TMDL Waivers reflected in the CGP, Appendix C, are submitted to the U.S. EPA, Guam EPA will review waivers on a project by project basis. m. Prior to submission of the Notice of Termination (NOT) to the U.S. EPA, permittees must clearly demonstration to Guam EPA that the project site has met all soil Page 58 2017 Construction General Permit (CGP) (as modified) stabilization requirements and removal of any temporary erosion control as outlined in the GSESCR. 9.7 EPA Region 10 9.7.1 IDR100000 State of Idaho, except Indian country a. Idaho's An tide_iradation Policy. The WQS contain an antidegradation policy providing three levels of protection to water bodies in Idaho (IDAPA 58.01.02.051). 1. Tier I Protection. The first level of protection applies to all water bodies subject to Clean Water Act jurisdiction and ensures that existing uses of a water body and the level of water quality necessary to protect those existing uses will be maintained and protected (IDAPA 58.01.02.051.01; 58.01.02.052.01). Additionally, a Tier 1 review is performed for all new or reissued permits or licenses (IDAPA 58.01.02.052.05). 2. Tier II Protection.The second level of protection applies to those water bodies considered high quality and ensures that no lowering of water quality will be allowed unless deemed necessary to accommodate important economic or social development (IDAPA 58.01.02.051.02; 58.01.02.052.08). 3. Tier III Protection.The third level of protection applies to water bodies that have been designated outstanding resource waters and requires that activities not cause a lowering of water quality (IDAPA 58.01.02.051.03; 58.01.02.052.09). DEQ is employing a water body by water body approach to implementing Idaho's antidegradation policy.This approach means that any water body fully supporting its beneficial uses will be considered high quality (IDAPA 58.01.02.052.05.a). Any water body not fully supporting its beneficial uses will be provided Tier I protection for that use, unless specific circumstances warranting Tier II protection are met (IDAPA 58.01.02.052.05.c). The most recent federally approved Integrated Report and supporting data are used to determine support status and the tier of protection (IDAPA 58.01.02.052.05). b. Pollutants of Concern. The primary pollutants of concern associated with stormwater discharges from construction activities are sediment, typically measured as total suspended solids and turbidity. Other potential pollutants include the following: phosphorus, nitrogen, pesticides, organics, metals, PCBs, petroleum products, construction chemicals, and solid wastes. c. Receivin_-Q Water Body Level of Protection. The CGP provides coverage to construction activities throughout the entire State of Idaho. Because of the statewide applicability, all of the jurisdictional waters within Idaho could potentially receive discharges either directly or indirectly from activities covered under the CGP. DEQ applies a water body by water body approach to determine the level of antidegradation a water body will receive. All waters in Idaho that receive discharges from activities authorized under the CGP will receive, at minimum Tier I antidegradation protection because Idaho's antidegradation policy applies to all waters of the state. Water bodies that fully support their aquatic life or recreational uses are considered to be high quality waters and will receive Tier II antidegradation protection. Although Idaho does not currently have any Tier III designated outstanding resource waters (ORWs) designated, it is possible for a water body to be designated as an ORW during the life of the CGP. Because of this potential, the antidegradation review also assesses whether the permit complies with the Page 59 2017 Construction General Permit (CGP) (as modified) outstanding resource water requirements of Idaho's antidegradation policy. To determine the support status of the receiving water body, persons filing a Notice of Intent (NOI) for coverage under this general permit must use the most recent EPA-approved Integrated Report, available on Idaho DEQ's website: ni-t rin asse................ ,irk..............a ..:t/i,i ..::�...............g r l ,.....ir irl.. High quality waters are identified in Categories 1 and 2 of the Integrated Report. If a water body is in either Category 1 or 2, it is a Tier II water body. Unassessed waters are identified as Category 3 of DEQ's Integrated Report. These waters require a case-by-case determination to be made by DEQ based on available information at the time of the application for permit coverage. If a water body is unassessed, the applicant is directed to contact DEQ for assistance in filing the NOI. Impaired waters are identified in Categories 4 and 5 of the Integrated Report. Category 4(a) contains impaired waters for which a TMDL has been approved by EPA. Category 4(b) contains impaired waters for which controls other than a TMDL have been approved by EPA. Category 5 contains waters which have been identified as "impaired," for which a TMDL is needed. These waters are Tier I waters, for the use which is impaired. With the exception, if the aquatic life uses are impaired for any of these three pollutants dissolved oxygen, pH, or temperature and the biological or aquatic habitat parameters show a health, balanced biological community, then the water body shall receive Tier II protection, in addition to Tier I protection, for aquatic life uses (IDAPA 58.01.02.052.05.c.i.). DEQ's webpage also has a link to the state's map-based Integrated Report which presents information from the Integrated Report in a searchable, map-based format: h,.l,.L : . .i h . sails inc its uirc s ins s,..... -t . Water bodies can be in multiple categories for different causes. If assistance is needed in using these tools, or if additional information/clarification regarding the support status of the receiving water body is desired, the operator is directed to make contact with the appropriate DEQ regional office of the State office in the table below: Regional Address Phone Email and State Number Office Boise 1445 N. 208-373- Kati.cairberin .i h v Orchard Rd., 0550 Boise 83706 Coeur 2110Ironwood 208-769- Jui.n .....................b it is-t .i h ...............d'Alene Parkway, 1422 Coeur D'Alene 83814 Idaho Falls 900 N. Skyline, 208-528- . ,.�.m.l.................... .s .ii h . gov Suite B., Idaho 2650 Falls 83402 Page 60 2017 Construction General Permit (CGP) (as modified) Lewiston 1 118 "F" St., 208-799- ov .................................!r. ..�........................................r.................................................q...®.li............................... .................R.. Lewiston 83501 4370 Pocatello 444 Hospital 208-236- ,,,,,.,vinin.vain .idaho.gov way, #300 6160 Pocatello 83201 Twin Falls 650 Addison 208-736- . ....................::�.. ...............................I�..®... .. ... .li..............................ir ................ .. ®ii Ave., W., Suite 2190 1 10, Twin Falls 83301 State 1410 N. Hilton 208-373- Po .I ..li. ...................................�.............................i..l ................!r...............................li.............. . ............................... .ii Office Rd., Boise 0502 83706 d. Turbidity Monitorin_g. The permittee must conduct turbidity monitoring during construction activities and thereafter on days where there is a direct discharge of pollutants from an unstabilized portion of the site which is causing a visible plume to a water of the U.S. A properly and regularly calibrated turbidimeter is required for measurements analyzed in the field (preferred method), but grab samples may be collected and taken to a laboratory for analysis. If the permittee can demonstrate that there will be no direct discharge from the construction site, then turbidity monitoring is not required. When monitoring is required, a sample must be taken at an undisturbed area immediately upstream of the project area to establish background turbidity levels for the monitoring event. Background turbidity, location, date and time must be recorded prior to monitoring downstream of the project area. A sample must also be taken immediately downstream from any point of discharge and within any visible plume. The turbidity, location, date and time must be recorded.The downstream sample must be taken immediately following the upstream sample in order to obtain meaningful and representative results. Results from the compliance point sampling or observation78 must be compared to the background levels to determine whether project activities are causing an exceedance of state WQS. If the downstream turbidity is 50 NTUs or more than the upstream turbidity, then the project is causing an exceedance of WQS.Any exceedance of the turbidity standard must be reporting to the appropriate DEQ regional office within 24 hours. The following six (6) steps should be followed to ensure compliance with the turbidity standard: 1. If a visible plume is observed, quantify the plume by collecting turbidity measurements from within the plume and compare the results to Idaho's instantaneous numeric turbidity criterion (50 NTU over the background). 78 A visual observation is only acceptable to determine whether BMPs are functioning properly.If a plume is observed,the project may be causing an exceedance of WQS and the permittee must collect turbidity data and inspect the condition of the projects BMPs. If the BMPs appear to be functioning to their fullest capability and the turbidity is 50 NTUs or more than the upstream turbidity, then the permittee must modify the activity or implement additional BMPs (this may also include modifying existing BMPs). Page 61 2017 Construction General Permit (CGP) (as modified) 2. If turbidity is less than 50 NTU instantaneously over the background turbidity; continue monitoring as long as the plume is visible. If turbidity exceeds background turbidity by more than 50 NTU instantaneously then stop all earth disturbing construction activities and proceed to step 3. 3. Take immediate action to address the cause of the exceedance.That may include inspection the condition of project BMPs. If the BMPs are functioning to their fullest capability, then the permittee must modify project activities and/or BMPs to correct the exceedance. 4. Notify the appropriate DEQ regional office within 24 hours. 5. Possibly increase monitoring frequency until state water quality standards are met. 6. Continue earth disturbing construction activities once turbidity readings return to within 50 NTU instantaneously and 25 NTU for more than ten consecutive days over the background turbidity. Copies of daily logs for turbidity monitoring must be available to DEQ upon request.The report must describe all exceedances and subsequent actions taken, including the effectiveness of the action. e. Reporting of Discharges Containing Hazardous Materials or Petroleum Products. All spills of hazardous material, deleterious material or petroleum products which may impact waters (ground and surface) of the state shall be immediately reported. Call 911 if immediate assistance is required to control, contain or clean up the spill. If no assistance is needed in cleaning up the spill, contact the appropriate DEQ regional office in the table below during normal working hours or Idaho State Communications Center after normal working hours. If the spilled volume is above federal reportable quantities, contact the National Repose Center. For immediate assistance: Call 911 National Response Center: (800) 424-8802 Idaho State Communications Center: (208) 632-8000 Regional office Toll Free Phone Number Phone Number Boise 888-800-3480 208-373-0321 Coeur d'Alene 877-370-0017 208-769-1422 Idaho Falls 800-232-4635 208-528-2650 Lewiston 977-547-3304 208-799-4370 Pocatello 888-655-6160 208-236-6160 Twin Falls 800-270-1663 208-736-2190 9.7.2 IDR101000 Indian country within the State of Idaho, except Duck Valley Reservation lands (see Region 9) 9.7.2.1 Shoshone-Bannock Tribes. The following conditions apply only to discharges on the Shoshone-Bannock Reservation: f. Each operator shall submit a signed hard copy of the Notice of Intent (NOI) to the Shoshone-Bannock Tribes Water Resources Department at the same time it is Page 62 2017 Construction General Permit (CGP) (as modified) submitted electronically to the Environmental Protection Agency (EPA) and shall provide the Shoshone-Bannock Tribes Water Resources Department the acknowledgement of receipt of the NOI from the EPA within 7 calendar days of receipt from the EPA. 9.7.3 WAR10F000 Areas in the State of Washington, except those located on Indian country, subject to construction activity by a Federal Operator. The following conditions apply only to discharges on federal facilities in the State of Washington: a. Discharges shall not cause or contribute to a violation of surface water quality standards (Chapter 173-201 A WAC), groundwater quality standards (Chapter 173- 200 WAC), sediment management standards (Chapter 173-204 WAC), and human health-based criteria in the National Toxics Rule (40 CFR Part 131.36). Discharges that are not in compliance with these standards are not authorized. b. Prior to the discharge of stormwater and non-storm water to waters of the State, the Permittee must apply all known, available, and reasonable methods of prevention, control, and treatment (AKART). This includes the preparation and implementation of an adequate SWPPP,with all appropriate BMPs installed and maintained in accordance with the SWPPP and the terms and conditions of this permit. c. Permittees who discharge to segments of waterbodies listed as impaired by the State of Washington under Section 303(d) of the Clean Water Act for turbidity, fine sediment, phosphorus, or pH must comply with the following numeric effluent limits: Parameter Identified Parameter Unit Analytical Method Numeric in 303(d) Listing Sampled Effluent Limit • Turbidity Turbidity NTU SM2130 or EPA 180.1 25 NTUs at the • Fine Sediment point where the • Phosphorus stormwater is discharged from the site. High pH pH Su pH meter In the range of 6.5-8.5 d. All references and requirements associated with Section 303(d) of the Clean Water Act mean the most current EPA approved listing of impaired waters that exists on February 16, 2017, or the date when the operator's complete permit application is received by EPA, whichever is later. e. Discharges to waterbodies subject to an applicable Total Maximum Daily Load (TMDL) for turbidity, fine sediment, high pH, or phosphorus, shall be consistent with the assumptions and requirements of the TMDL. i. Where an applicable TMDL sets specific waste load allocations or requirements for discharges covered by this permit, discharges shall be consistent with any specific waste load allocations or requirements establish by the applicable TMDL. ii. Where an applicable TMDL has established a general waste load allocation for construction stormwater discharges, but no specific requirements have been identified, compliance with this permit will be assumed to be consistent with the approved TMDL. Page 63 2017 Construction General Permit (CGP) (as modified) iii. Where an applicable TMDL has not specified a waste load allocation for construction stormwater discharges, but has not excluded these discharges, compliance with this permit will be assumed to be consistent with the approved TMDL. iv. Where an applicable TMDL specifically precludes or prohibits discharges from construction activity, the operator is not eligible for coverage under this permit. V. Applicable TMDL means a TMDL for turbidity, fine sediment, high pH, or phosphorus, which has been completed and approved by EPA prior to February 16, 2017, or prior to the date the operator's complete NOI is received by EPA,whichever is later. 9.7.4 WAR101000 Indian country within the State of Washington 9.7.4.1 Confederated Tribes of the Colville Reservation. The following conditions apply only to discharges on the Colville Indian Reservation (CIR) and on other Tribal trust lands or allotments of the Confederated Tribes of the Colville Reservation: a. A copy of the Stormwater Pollution Prevention Plan must be submitted to the following office at least thirty (30) days in advance of sending the Notice of Intent (NOI) to EPA: Environmental Trust Department Confederated Tribes of the Colville Reservation PO Box 150 Nesepelem, WA 99155 b. Copies of the Notice of Intent (NOI) and Notice of Termination (NOT) must be sent to the ETD at the same time they are submitted to EPA. c. Discharges to Omak Creek, the Okanogan River, and Columbia River downstream of Chief Joseph Dam may affect threatened or endangered species, and shall only be permitted in adherence with Appendix D of the CGP. d. All work shall be carried out in such a manner as will prevent violations of water quality criteria as stated in Chapter 4-8 Water Quality Standards of the Colville Law and Order Code, as amended. e. Appropriate steps shall be taken to ensure that petroleum products or other chemical pollutants are prevented from entering waters of the CIR. All spills must be reported to the appropriate emergency management agency and the ETD, and measures shall be taken immediately to prevent the pollution of waters of the CIR, including groundwater. f. Stormwater site inspections shall be conducted at least once every 7 calendar days,within 24-hours of the occurrence of a rain event of 0.25 inches or greater in a 24-hour period, and daily during periods of saturated ground surface or snowmelt with accompanying surface runoff. g. Results of discharge sampling must be reported to the ETD within 7 days of sample collection. All sample reporting must include the date and time, location, and individual performing the sampling. h. Any corrective action reports that are required under the CGP must be submitted to the ETD at the above address within one (1) working day of the report completion. Page 64 2017 Construction General Permit (CGP) (as modified) i. This certification does not authorize impacts to cultural, historical, or archeological features or sites, or proprieties that may be eligible for such listing. 9.7.4.2 Lummi Nation.The following conditions apply only to discharges on the Lummi Reservation: a. The Lummi Nation reserves the right to modify this 401 certification if the final version of the NPDES General Permit for Storm Water Discharges Associated with Construction Activity (CGP) on tribal lands in the State of Washington (Permit No. WAR101000) is substantively different than the draft version of the proposed permit that was made available for public comments during April 2016.The Lummi Nation will determine if the final version of the NPDES CGP is substantively different than the draft version following review of the final version once the EPA makes it available. b. This certification does not exempt and is provisional upon compliance with other applicable statutes and codes administered by federal and Lummi tribal agencies. Pursuant to Lummi Code of Laws (LCL) 17.05.020(a), the operator must also obtain a land use permit from the Lummi Planning Department as provided in Title 15 of the Lummi Code of Laws and regulations adopted thereunder. c. Pursuant to LCL 17.05.020(a), each operator shall develop and submit a Storm Water Pollution Prevention Plan to the Lummi Water Resources Division for review and approval by the Water Resources Manager prior to beginning any discharge activities. d. Pursuant to LCL Title 17, each operator shall be responsible for achieving compliance with the Water Quality Standards for Surface Waters of the Lummi Indian Reservation (Lummi Administrative Regulations [LAR] 17 LAR 07.010 through 17 LAR 07210 together with supplements and amendments thereto). e. Each operator shall submit a signed hard copy of the Notice of Intent (NOI) to the Lummi Water Resources Division at the same time it is submitted electronically to the Environmental Protection Agency (EPA) and shall provide the Lummi Water Resources Division the acknowledgement of receipt of the NOI from the EPA and the associated NPDES tracking number provided by the EPA within 7 calendar days of receipt from the EPA. f. Each operator shall submit a signed hard copy of the Notice of Termination (NOT) to the Lummi Water Resources Division at the same time it is submitted electronically to the EPA and shall provide the Lummi Water Resources Division the EPA acknowledgement of receipt of the NOT. g. Storm Water Pollution Prevention Plans, Notice of Intent, Notice of Termination and associated correspondence with the EPA shall be submitted to: Lummi Natural Resources Department ATTN: Water Resources Manager 2665 Kwina Road Bellingham, WA 98226-9298 9.7.4.3 Makah Tribe. The following conditions apply only to discharges on the Makah Reservation: a. The operator shall be responsible for achieving compliance with the Makah Tribe's Water Quality Standards. Page 65 2017 Construction General Permit (CGP) (as modified) b. The operator shall submit a Storm Water Pollution Prevention Plan to the Makah Tribe Water Quality Program and Makah Fisheries Habitat Division for review and approval at least thirty (30) days prior to beginning any discharge activities. c. The operator shall submit a copy of the Notice of Intent to the Makah Tribe Water Quality Program and Makah Fisheries Habitat Division at the same time it is submitted to EPA. d. Storm Water Pollution Prevention Plans and Notices of Intent shall be submitted to: Aaron Parker Makah Fisheries Management Water Quality Specialist (360) 645-3162 Cell 206-356-0319 Aaron parker@makah.com PO Box 115 Neah Bay WA 98357 9.7.4.4 Puyallup Tribe of Indians. The following conditions apply only to discharges on the Puyallup Tribe of Indians Reservation: a. Each permittee shall be responsible for achieving compliance with the Puyallup Tribe's Water Quality Standards, including antidegradation provisions.The Puyallup Natural Resources Department will conduct an antidegradation review for permitted activities that have the potential to lower water quality.The antidegradation review will be consistent with the Tribe's Antidegradation Implementation Procedures.The Tribe may also impose additional controls on a site-specific basis, or request EPA to require the operator obtain coverage under an individual permit, if information in the NOI or from other sources indicates that the operator's discharges are not controlled as necessary to meet applicable water quality standards. b. The permittee shall be responsible for meeting any additional permit requirements imposed by EPA necessary to comply with the Puyallup Tribe's antidegradation policies if the discharge point is located within 1 linear mile upstream of waters designated by the Tribe. c. Each permittee shall submit a copy of the Notice of Intent (NOI) to be covered by the general permit to Char Naylor (cb.g..!ij ..gylor@puyalluptribe.com) and Russ Ladley (russ.ladle...................................................................................y@puyalluptribe.com) by email or at the address listed below at the same time it is submitted to EPA. Puyallup Tribe of Indians 3009 E. Portland Avenue Tacoma, WA 98404 ATTN: Russ Ladley and Char Naylor d. All supporting documentation and certifications in the NOI related to coverage under the general permit for Endangered Species Act purposes shall be submitted to the Tribe's Resource Protection Manager (russ.ladley@puyalluptribe.com) and Char Naylor (char.naylor@puyalluptribe.com) for review. e. If EPA requires coverage under an individual or alternative permit, the permittee shall submit a copy of the permit to Russ Ladley and Char Naylor at the address listed above. Page 66 2017 Construction General Permit (CGP) (as modified) f. The permittee shall submit all stormwater pollution prevention plans to Char Naylor for review and approval prior to beginning any activities resulting in a discharge to tribal waters. g. The permittee shall conduct benchmark monitoring for turbidity (or transparency) and, in the event of significant concrete work or engineered soils, pH monitoring as well. Monitoring, benchmarks, and reporting requirements contained in Condition SA. (pp.13-20) of the Washington State Construction Stormwater General Permit, effective January 1, 2016, shall apply, as applicable. h. The permittee shall notify Char Naylor (253-680-5520) and Russ Ladley (253-680- 5560) prior to conducting inspections at construction sites generating storm water discharged to tribal waters. i. Treat dewatering discharges with controls necessary to minimize discharges of pollutants in order to minimize the discharge of pollutants to groundwater or surface waters from stormwater that is removed from excavations, trenches, foundations, vaults, or other storage areas. Examples of appropriate controls include sediment basins or sediment traps, sediment socks, dewatering tanks, tube settlers,weir tanks, and filtration systems (e.g., bag or sand filters) that are designed to remove sediment. To the extent feasible, utilize vegetated, upland areas of the site to infiltrate dewatering water before discharge. At all points where dewatering water is discharged, comply with the velocity dissipation requirements of Part 2.2.1 1 of EPA's 2016 General Construction Stormwater Permit. Examples of velocity dissipation devices include check dams,sediment traps, riprap, and grouted riprap at outlets. j. The permittee shall provide and maintain natural buffers to the maximum extent possible (and/or equivalent erosion and sediment controls) when tribal waters are located within 100 feet of the site's earth disturbances. If infeasible to provide and maintain an undisturbed 100 foot natural buffer, erosion and sediment controls to achieve the sediment load reduction equivalent to a 100-foot undisturbed natural buffer shall be required. 9.7.4.5 Spokane Tribe of Indians. The following conditions apply only to discharges on the Spokane Tribe Reservation: a. Pursuant to Tribal Law and Order Code (TLOC) Chapter 30 each operator shall be responsible for achieving compliance with the Surface Water Quality Standards of the Spokane Tribe. The operator shall notify the Spokane Tribe, Water Control Board (WCB) of any spills of hazardous material and; b. Each operator shall submit a signed hard copy of the Notice of Intent (NOI) to the WCB at the same time it is submitted to EPA. c. The permittee shall allow the Tribal Water Control Board or its designee to inspect and sample at the construction site as needed. d. Each operator shall submit a signed copy of the Notice of Termination (NOT) to the WCB at the same time it is submitted to EPA. The correspondence address for the Spokane Tribe Water Control Board is: Water Control Board c/o. Brian Crossley PO Box 480 Wellpinit WA 99040 Page 67 2017 Construction General Permit (CGP) (as modified) (509)626-4409 Crossley@spokanetribe.com 9.7.4.E Swinomish Indian Tribal Community.The following conditions apply only to discharges on the Swinomish Reservation: a. Owners and operators seeking coverage under this permit who intend to discharge to Regulated Surface Waters must submit a copy of the Notice of Intent (NOI) to the DEP at the same time the NOI is submitted to EPA. b. Owners and operators seeking coverage under this permit must also submit a Stormwater Pollution Prevention Plan to the DEP for review and approval by DEP prior to beginning any discharge activities. c. Owners and operators must also submit to the DEP Changes in NOI and/or Notices of Termination at the same time they are submitted to EPA. 9.7.4.7 Tulalip Tribes. The following conditions apply only to discharges on the Tulalip Reservation: a. This certification does not exempt and is provisional upon compliance with other applicable statues and codes administered by federal and Tulalip tribal agencies. Pursuant to Tulalip Tribes code of law, the operator must also obtain a land use permit from the Tulalip Tribes Planning Department as provided in Title 7 of the Tulalip Tribal Code (http://www.codepublishing.com/WA/Tulalip/?Tulalip02/Tulalip0205.html). b. Each CGP operator shall be responsible for achieving compliance with Tulalip Tribes Water Quality Standards. c. Each CGP operator shall submit their Stormwater Pollution Prevention Plan (SWPPP) to the: Tulalip Natural &Cultural Resources Department Tulalip Tribes 6406 Marine Drive Tulalip, WA 98271 Page 68 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix C-Copy of NOI and EPA Authorization email INSERT COPY OF NOI AND EPA'S AUTHORIZATION EMAIL PROVIDING COVERAGE UNDER THE CGP EPA SWPPP Template, Version 2.1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix D-Copy of Inspection Form (Note: EPA has developed a sample inspection form that CGP operators can use. The form is available at https://www.epa.aov/ngdes/stormwater-discharges-construction- activities#resources) EPA SWPPP Template, Version 2.1 2017 Construction General Permit Inspection Report Template - Field Version Purpose This Inspection Report Template (or "template") is to assist you in preparing inspection reports for EPA's 2017 Construction General Permit (CGP). If you are covered under the 2017 CGP, you can use this template to create an inspection report form that is customized to the specific circumstances of your site and that complies with the minimum reporting requirements of Part 4.7 of the permit. Note that the use of this form is optional;you may use your own inspection report form provided it includes the minimum information required in Part 4.7 of the CGP. If you are covered under a state CGP, this template may be helpful in developing a form that can be used for that permit; however, it will need to be modified to meet the specific requirements of that permit. If your permitting authority requires you to use a specific inspection report form, you should not use this form. Notes: While EPA has made every effort to ensure the accuracy of all instructions contained in the Inspection Report Template, it is the permit, not the template, that determines the actual obligations of regulated construction stormwater discharges. In the event of a conflict between the Inspection Report Template and any corresponding provision of the 2017 CGP,you must abide by the requirements in the permit. EPA welcomes comments on the Inspection Report Template at any time and will consider those comments in any future revision of this document. You may contact EPA for CGP-related inquiries at cap@epa.aov. Overview of Inspection Requirements (see CGP Part 4) Construction operators covered under the 2017 CGP are subject to the following inspection requirements: Person(s) Responsible for Inspecting the Site (see Part 4.1) The person(s) inspecting your site must be a "qualified person"who may be either on your staff or a third party you hire to conduct such inspections. • A "qualified person" is a person knowledgeable in the principles and practice of erosion and sediment controls and pollution prevention,who possesses the appropriate skills and training to assess conditions at the construction site that could impact stormwater quality, and the appropriate skills and training to assess the effectiveness of any stormwater controls selected and installed to meet the requirements of this permit. Inspection Frequency (see Part 4.2) You are required to conduct inspections either: • Once every 7 calendar days; or • Once every 14 calendar days and within 24 hours of a storm event of 0.25 inches or greater or the occurrence of runoff from snowmelt sufficient to cause a discharge. Your inspection frequency is increased if the site discharges to a sensitive water.See Part 4.3.Your inspection frequency may be decreased to account for stabilized areas,or for arid,semi-arid, or drought-stricken conditions,or for frozen conditions.See Part 4.4. Areas That Need to Be Inspected (see Part 4.5) During each inspection,you must inspect the following areas of your site: • Cleared, graded, or excavated areas of the site; • Stormwater controls (e.g., perimeter controls, sediment basins, inlets, exit points etc.) and pollution prevention practices (e.g., pollution prevention practices for vehicle fueling/maintenance and washing, construction product storage, handling, and disposal, etc.) at the site; Material,waste, or borrow areas covered by the permit, and equipment storage and maintenance areas; Areas where stormwater flows within the site; • Stormwater discharge points; and Areas where stabilization has been implemented. What to Check For During Your Inspection (see Part 4.6) During your site inspection,you are required to check: • Whether stormwater controls or pollution prevention practices are properly installed, require maintenance or corrective action, or whether new or modified controls are required; • For the presence of conditions that could lead to spills, leaks, or other pollutant accumulations and discharges; • For locations where new or modified stormwater controls are necessary to meet requirements of the permit; i • Whether there are visible signs of erosion and sediment accumulation at points of discharge and to the channels and streambanks that are in the immediate vicinity of the discharge; • If a stormwater discharge is occurring at the time of the inspection, whether there are obvious, visual signs of pollutant discharges;and • If any permit violations have occurred on the site. Inspection Reports (see Part 4.7) Within 24 hours of completing each inspection,you are required to complete an inspection report that includes: • Date of inspection; • Names and titles of person(s) conducting the inspection; • Summary of inspection findings; • Rain gauge or weather station readings if your inspection is triggered by the 0.25-inch storm threshold;and If you determine that a portion of your site is unsafe to access for the inspection, documentation of what conditions prevented the inspection and where these conditions occurred on the site Instructions for Using This Template This Field Version of the Inspection Report Template is intended to be used in the field and filled out by hand. If you will be filling out the Inspection Report Template electronically (i.e., you will be typing in your findings), please use the Electronic Version of the Inspection Report Template available at https://www.epa._c o� v/npdes/stormwater-discharges-construction-activities#resources.The Electronic Version includes text fields with instructions for what to enter. Keep in mind that this document is a template and not an "off-the-shelf" inspection report that is ready to use without some modification. You must first customize this form to include the specifics of your project in order for it to be useable for your inspection reports. Once you have entered all of your site-specific information into these fields,you may print out this form for use in the field to complete inspection reports. The following tips for using this template will help you ensure that the minimum permit requirements are met: • Review the inspection requirements. Before you start developing your inspection report form, read the CGP's Part 4 inspection requirements.This will ensure that you have a working understanding of the permit's underlying inspection requirements. • Complete all required text fields. Fill out all text fields. Only by filling out all fields will the template be compliant with the requirements of the permit. (Note: Where you do not need the number of rows provided in the template form for your inspection, you may leave those rows blank. Or, if you need more space to document your findings, you may add an additional sheet.) • Use your site map to document inspection findings. In several places in the template, you are directed to specify the location of certain features of your site, including where stormwater controls are installed and where you will be stabilizing exposed soil. You are also asked to fill in location information for unsafe conditions and the locations of any discharges occurring during your inspections. Where you are asked for location information, EPA encourages you to reference the point on your SWPPP site map that corresponds to the requested location on the inspection form. Using the site map as a tool in this way will help you conduct efficient inspections, will assist you in evaluating problems found, and will ensure proper documentation. • Sign and certify each inspection report. The operator or a duly authorized representative (see Appendix I, Part I.1 1.2) must sign and certify each inspection report for it to be considered complete. Where a contractor or subcontractor carries out your inspections, it is recommended that you also have the inspector sign and certify the form, in addition to the signature and certification required of the permitted operator. The template includes a signature block for both parties. • Include the inspection form with your SWPPP. Once your form is complete, make sure to include a copy of the inspection form in your SWPPP in accordance with Part 7.2.7.e of the CGP. • Retain copies of all inspection reports with your records. You must also retain in your records copies of all inspection reports in accordance with the requirements in Part 4.7.3 of the 2017 CGP. These reports must be retained for at least 3 years from the date your permit coverage expires or is terminated. Section-by-Section Instructions You will find specific instructions corresponding to each section of the report form on the reverse side of each page. These instructions provide you with more details in terms of what EPA expects to be documented in these reports. General Information see reverse for instructions Name of Project NPDES ID No. Inspection Date Weather conditions during Inspection start Inspection end inspection time time Inspector Name,Title& Contact Information Present Phase of Construction Inspection Location (if multiple inspections are required, specify location where this inspection is being conducted Inspection Frequency(Note:you may be subject to different inspection frequencies in different areas of the site. Check all that apply) Standard Frequency: ❑ Every 7 days ❑ Every 14 days and within 24 hours of a 0.25" rain or the occurrence of runoff from snowmelt sufficient to cause a discharge Increased Frequency: ❑ Every 7 days and within 24 hours of a 0.25" rain (for areas of sites discharging to sediment or nutrient-impaired waters or to waters designated as Tier 2,Tier 2.5, or Tier 3) Reduced Frequency: ❑ Twice during first month, no more than 14 calendar days apart;then once per month after first month; (for stabilized areas) ❑ Twice during first month, no more than 14 calendar days apart;then once more within 24 hours of a 0.25" rain (for stabilized areas on "linear construction sites") ❑ Once per month and within 24 hours of a 0.25" rain (for arid,semi-arid, or drought-stricken areas during seasonally dry periods or during drought) ❑ Once per month for frozen conditions where earth-disturbing activities are being conducted Was this inspection triggered by a 0.25"storm event? ❑ Yes ❑ No If yes, how did you determined whether a 0.25"storm event has occurred? ❑ Rain gauge on site ❑ Weather station representative of site.Specify weather station source: Total rainfall amount that triggered the inspection (in inches): Was this inspection triggered by the occurrence of runoff from snowmelt sufficient to cause a discharge? ❑ Yes ❑ No Unsafe Conditions for Inspection Did you determine that any portion of your site was unsafe for inspection per CGP Part 4.5? ❑ Yes ❑ No If"yes",complete the following: - Describe the conditions that prevented you from conducting the inspection in this location: - Location(s) where conditions were found: Page 1 of 5 Instructions for Filling Out "General Information" Section Name of Project Enter the name for the project. NPDES ID No. Enter the NPDES ID number that was assigned to your NOI for permit coverage. Inspection Date Enter the date you conducted the inspection. Weather Conditions During Inspection Enter the weather conditions occurring during the inspection, e.g.,sunny,overcast, light rain, heavy rain,snowing, icy,windy. Inspection start and end times Enter the time you started and ended the inspection. Inspector Name,Title&Contact Information Provide the name of the person(s) (either a member of your company's staff or a contractor or subcontractor) that conducted this inspection. Provide the inspector's name, title, and contact information as directed in the form. Present Phase of Construction If this project is being completed in more than one phase, indicate which phase it is currently in. Inspection Location If your project has multiple locations where you conduct separate inspections,specify the location where this inspection is being conducted. If only one inspection is conducted for your entire project, enter"Entire Site." If necessary, complete additional inspection report forms for each separate inspection location. Inspection Frequency Check the box that describes the inspection frequency that applies to you. Note that you may be subject to different inspection frequencies in different areas of your site. If your project does not discharge to a "sensitive water" (i.e., a water impaired for sediment or nutrients, or listed as Tier 2, 2.5, or 3 by your state or tribe) and you are not affected by any of the circumstances described in CGP Part 4.4,then you can choose your frequency based on CGP Part 4.2-either every 7 calendar days, or every 14 calendar days and within 24 hours of a 0.25-inch storm event. For any portion of your site that discharges to a sensitive water,your inspection frequency for that area is fixed under CGP Part 4.3 at every 7calendar days and within 24 hours of a 0.25-inch storm event. If portions of your site are stabilized, are located in arid, semi-arid, or drought-stricken areas, or are subject to frozen conditions, consult CGP Part 4.4 for the applicable inspection frequency. Check all the inspection frequencies that apply to your project. Was This Inspection Triggered by a 0.25 Inch Storm Event or the occurrence of runoff from snowmelt sufficient to cause a discharge? If you were required to conduct this inspection because of a 0.25-inch (or greater) rain event,indicate whether you relied on an on-site rain gauge or a nearby weather station (and where the weather station is located).Also,specify the total amount of rainfall for this specific storm event. If you were required to conduct this inspection because of the occurrence of runoff from snowmelt,then check the appropriate box. Unsafe Conditions for Inspection Inspections are not required where a portion of the site or the entire site is subject to unsafe conditions.See CGP Part 4.5.These conditions should not regularly occur, and should not be consistently present on a site.Generally, unsafe conditions are those that render the site (or a portion of it) inaccessible or that would pose a significant probability of injury to applicable personnel. Examples could include severe storm or flood conditions, high winds, and downed electrical wires. If your site, or a portion of it, is affected by unsafe conditions during the time of your inspection, provide a description of the conditions that prevented you from conducting the inspection and what parts of the site were affected. If the entire site was considered unsafe,specify the location as "Entire site" Condition ant! Effectiveness of Erosion and Sediment(E&S)Controls (CGP,Part 2.2) see reverse far instructions Type/Location of US Control Maintenance Corrective Date on Which Notes [Add an additional sheet if Needed?* Action Maintenance or necessary] Required?* Corrective Action First Identified? 1. ❑Yes ❑No ❑Yes ❑No 2. ❑Yes ❑No ❑Yes ❑No 3. ❑Yes ❑No ❑Yes ❑No 4. ❑Yes ❑No ❑Yes ❑No 5. ❑Yes ❑No ❑Yes ❑No 6. ❑Yes ❑No ❑Yes ❑No 7. ❑Yes ❑No ❑Yes ❑No 8. ❑Yes ❑No ❑Yes ❑No 9. ❑Yes ❑No ❑Yes ❑No 10. ❑Yes ❑No ❑Yes ❑No * Note:The permit differentiates between conditions requiring routine maintenance,and those requiring corrective action.The permit requires maintenance in order to keep controls in effective operating condition.Corrective actions are triggered only for specific conditions,which include: 1) A stormwater control needs repair or replacement (beyond routine maintenance) if it is not operating as intended;2) A stormwater control necessary to comply with the permit was never installed or was installed incorrectly;3) You become aware that the stormwater controls you have installed and are maintaining are not effective enough for the discharge to meet applicable water quality standards or applicable requirements in Part 3.1;4) One of the prohibited discharges in Part 1.3 is occurring or has occurred;or 5) EPA requires corrective actions as a result of a permit violation found during an inspection carried out under Part 4.8. If a condition on your site requires a corrective action, you must also fill out a corrective action form found at https://www.epa.aov/npdes/stormwater-discharges-construction-activities#resources.See Part 5 of the permit for more information. Page 2 of 5 Instructions for Filling Out the "Erosion and Sediment Control" Table Type and Location of E&S Controls Provide a list of all erosion and sediment (E&S) controls that your SWPPP indicates will be installed and implemented at your site.This list must include at a minimum all E&S controls required by CGP Part 2.2. Include also any natural buffers established under CGP Part 2.2.1. Buffer requirements apply if your project's earth-disturbing activities will occur within 50 feet of a water of the U.S.You may group your E&S controls on your form if you have several of the same type of controls (e.g.,you may group "Inlet Protection Measures", "Perimeter Controls", and "Stockpile Controls" together on one line), but if there are any problems with a specific control,you must separately identify the location of the control,whether maintenance or corrective action is necessary, and in the notes section you must describe the specifics about the problem you observed. Maintenance Needed? Answer"yes" if the E&S control requires maintenance due to normal wear and tear in order for the control to continue operating effectively.At a minimum, maintenance is required in the following specific instances: (1) for perimeter controls,whenever sediment has accumulated to half or more the above-ground height of the control (CGP Part 2.2.3.a); (2) where sediment has been tracked-out onto the surface of off-site streets or other paved areas (CGP Part 2.2.4); (3) for inlet protection measures,when sediment accumulates,the filter becomes clogged, and/or performance is compromised (CGP Part 2.2.10); and (4) for sediment basins, as necessary to maintain at least half of the design capacity of the basin (CGP Part 2.2.12.f). Note: In many cases, "yes" answers are expected and indicate a project with an active operation and maintenance program.You should also answer"yes" if work to fix the problem is still ongoing from the previous inspection. Corrective Action Needed? Answer"yes" if during your inspection you found any of the following conditions to be present (CGP, Part 5.1): (1) a required E&S control needs repair or replacement (beyond routine maintenance required under Part 2.1.4); (2) a require E&S control was never installed or was installed incorrectly; (3) you become aware that the inadequacy of the E&S control has led to an exceedance of an applicable water quality standard; (4) one of the prohibited discharges in Part 1.3 is occurring or has occurred;or (5) EPA requires corrective action for an E&S control as a result of a permit violation found during an inspection carried out under Part 4.8. If you answer "yes",you must take corrective action and complete a corrective action report,found at httl2s://www.epa.gov/npdes/stormwater-discharges-construction- activities#resources.. Note: You should answer"yes" if work to fix the problem from a previous inspection is still ongoing. Date on Which Maintenance or Corrective Action First Identified? Provide the date on which the condition that triggered the need for maintenance or corrective action was first identified. If the condition was just discovered during this inspection, enter the inspection date. If the condition is a carryover from a previous inspection,enter the original date of the condition's discovery. Notes For each E&S control and the area immediately surrounding it, note whether the control is properly installed and whether it appears to be working to minimize sediment discharge. Describe any problem conditions you observed such as the following,and why you think they occurred as well as actions (e.g., maintenance or corrective action) you will take or have taken to fix the problem: 1.Failure to install or to properly install a required E&S control 2.Damage or destruction to an E&S control caused by vehicles, equipment, or personnel,a storm event,or other event 3.Mud or sediment deposits found downslope from E&S controls 4.Sediment tracked out onto paved areas by vehicles leaving construction site 5.Noticeable erosion at discharge outlets or at adjacent streambanks or channels 6.Erosion of the site's sloped areas (e.g.,formation of rills or gullies) 7.E&S control is no longer working due to lack of maintenance For buffer areas, make note of whether they are marked off as required,whether there are signs of construction disturbance within the buffer,which is prohibited under the CGP,and whether there are visible signs of erosion resulting from discharges through the area. If maintenance or corrective action is required, briefly note the reason. If maintenance or corrective action have been completed, make a note of the date it was completed and what was done.If corrective action is required, note that you will need to complete a separate corrective action report describing the condition and your work to fix the problem. Condition and Effectiveness of Pollution Prevention,(P2) Practices (CGP Part 2.3) (see,,reverse, instructions Type/Location of P2 Practices Maintenance Corrective Date on Which Notes [Add an additional sheet if Needed?* Action Maintenance or necessary] Required?* Corrective Action First Identified? 1. E]Yes E]No E]Yes ❑No 2. ❑Yes ❑No ❑Yes ❑No 3. ❑Yes ❑No ❑Yes ❑No 4. ❑Yes ❑No ❑Yes ❑No 5. ❑Yes ❑No ❑Yes ❑No 6. ❑Yes ❑No ❑Yes ❑No 7. ❑Yes ❑No ❑Yes ❑No 8. ❑Yes ❑No ❑Yes ❑No 9. ❑Yes ❑No ❑Yes ❑No 10. ❑Yes ❑No ❑Yes ❑No * Note:The permit differentiates between conditions requiring routine maintenance,and those requiring corrective action.The permit requires maintenance in order to keep controls in effective operating condition.Corrective actions are triggered only for specific conditions,which include: 1) A stormwater control needs repair or replacement (beyond routine maintenance) if it is not operating as intended;2) A stormwater control necessary to comply with the permit was never installed or was installed incorrectly;3) You become aware that the stormwater controls you have installed and are maintaining are not effective enough for the discharge to meet applicable water quality standards or applicable requirements in Part 3.1;4) One of the prohibited discharges in Part 1.3 is occurring or has occurred;or 5) EPA requires corrective actions as a result of a permit violation found during an inspection carried out under Part 4.8. If a condition on your site requires a corrective action, you must also fill out a corrective action form found at https://www.epa.aov/npdes/stormwater-discharges-construction-activities#resources.See Part 5 of the permit for more information. Page 3 of 5 Instructions for Filling Out the "Pollution Prevention (P2) Practice" Table Type and Location of P2 Controls Provide a list of all pollution prevention (P2) practices that are implemented at your site.This list must include all P2 practices required by Part 2.3, and those that are described in your SWPPP. Maintenance Needed? Answer"yes" if the P2 practice requires maintenance due to normal wear and tear in order for the control to continue operating effectively. Note: In many cases, "yes" answers are expected and indicate a project with an active operation and maintenance program. Corrective Action Needed? Answer"yes" if during your inspection you found any of the following conditions to be present (CGP, Part 5.1): (1) a required P2 practice needs repair or replacement (beyond routine maintenance required under Part 2.1.4); (2) a require P2 practice was never installed or was installed incorrectly; (3) you become aware that the inadequacy of the P2 practice has led to an exceedance of an applicable water quality standard; (4) one of the "prohibited discharges" listed in CGP Part 1.3 is occurring or has occurred, or (5) EPA requires corrective action for a P2 practice as a result of a permit violation found during an inspection carried out under Part 4.8. If you answer"yes",you must take corrective action and complete a corrective action report (see https://www.epa.gov/npdes/stormwater-discharges- construction-activities#resources). Note: You should answer"yes" if work to fix the problem from a previous inspection is still ongoing. Date on Which Maintenance or Corrective Action First Identified? Provide the date on which the condition that triggered the need for maintenance or corrective action was first identified. If the condition was just discovered during this inspection, enter the inspection date. If the condition is a carryover from a previous inspection,enter the original date of the condition's discovery. Notes For each P2 control and the area immediately surrounding it, note whether the control is properly installed,whether it appears to be working to minimize or eliminate pollutant discharges,and whether maintenance or corrective action is required. Describe problem conditions you observed such as the following, and why you think they occurred, as well as actions you will take or have taken to fix the problem: 1.Failure to install or to properly install a required P2 control 2.Damage or destruction to a P2 control caused by vehicles, equipment,or personnel, or a storm event 3.Evidence of a spill, leak, or other type of pollutant discharge, or failure to have properly cleaned up a previous spill, leak,or other type of pollutant discharge 4.Spill response supplies are absent, insufficient, or not where they are supposed to be located 5.Improper storage, handling,or disposal of chemicals, building materials or products, fuels, or wastes 6.P2 practice is no longer working due to lack of maintenance If maintenance or corrective action is required, briefly note the reason. If maintenance or corrective action have been completed, make a note of the date it was completed and what was done.If corrective action is required, note that you will need to complete a separate corrective action report describing the condition and your work to fix the problem. t it z o E it P Fa rt 2 2 14 S aka i ati n of Exposed,So C see reverse for instructions Stabilization Area Stabilization Method Have You Initiated Notes [Add an additional sheet if Stabilization? necessary] 1. ❑YES ❑ NO If yes, provide date: 2. ❑ YES ❑ NO If yes, provide date: 3. ❑ YES ❑ NO If yes, provide date: 4. ❑YES ❑ NO If yes, provide date: 5. ❑ YES ❑ NO If yes, provide date: Description of Discharges (CGV'Part 4.'6.6),, ( ),see reverse for instructions Was a stormwater discharge or other discharge occurring from any part of your site at the time of the inspection? ❑ Yes [:] No If"yes", provide the following information for each point of discharge: Discharge Location Observations [Add an additional sheet if necessary] 1. Describe the discharge: At points of discharge and the channels and banks of waters of the U.S.in the immediate vicinity,are there any visible signs of erosion and/or sediment accumulation that can be attributed to your discharge? ❑ Yes ❑ No If yes, describe what you see, specify the location(s) where these conditions were found, and indicate whether modification, maintenance,or corrective action is needed to resolve the issue: 2. Describe the discharge: At points of discharge and the channels and banks of waters of the U.S.in the immediate vicinity,are there any visible signs of erosion and/or sediment accumulation that can be attributed to your discharge? ❑ Yes ❑ No If yes, describe what you see, specify the location(s) where these conditions were found, and indicate whether modification, maintenance,or corrective action is needed to resolve the issue: Page 4 of 5 Instructions for Filling Out the "Stabilization of Exposed Soil" Table Stabilization Area List all areas where soil stabilization is required to begin because construction work in that area has permanently stopped or temporarily stopped (i.e.,work will stop for 14 or more days), and all areas where stabilization has been implemented. Stabilization Method For each area,specify the method of stabilization (e.g., hydroseed,sod, planted vegetation, erosion control blanket, mulch,rock). Have You Initiated Stabilization For each area,indicate whether stabilization has been initiated. Notes For each area where stabilization has been initiated, describe the progress that has been made, and what additional actions are necessary to complete stabilization. Note the effectiveness of stabilization in preventing erosion. If stabilization has been initiated but not completed, make a note of the date it is to be completed. If stabilization has been completed, make a note of the date it was completed. If stabilization has not yet been initiated, make a note of the date it is to be initiated, and the date it is to be completed. Instructions for Filling Out the "Description of Discharges" Table You are only required to complete this section if a discharge is occurring at the time of the inspection. Was a Stormwater Discharge Occurring From Any Part of Your Site At The Time of the Inspection? During your inspection, examine all points of discharge from your site, and determine whether a discharge is occurring. If there is a discharge, answer"yes" and complete the questions below regarding the specific discharge. If there is not a discharge, answer"no" and skip to the next page. Discharge Location (repeat as necessary if there are multiple points of discharge) Location of discharge. Specify the location on your site where the discharge is occurring.The location may be an outlet from a stormwater control or constructed stormwater channel, a discharge into a storm sewer inlet, or a specific point on the site. Be as specific as possible; it is recommended that you refer to a precise point on your site map. Describe the discharge. Include a specific description of any noteworthy characteristics of the discharge such as color; odor;floating,settled, or suspended solids; foam; oil sheen; and other obvious pollution indicators. Are there visible signs of erosion or sediment accumulation? At each point of discharge and the channel and streambank in the immediate vicinity,visually assess whether there are any obvious signs of erosion and/or sediment accumulation that can be attributed to your discharge. If you answer"yes", include a description in the space provided of the erosion and sediment deposition that you have found,specify where on the site or in the water of the U.S. it is found,and indicate whether modification, maintenance,or corrective action is needed to resolve the issue. Contractor or,Subcontractor Signature and Certification see reverse for instructions "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I have no personal knowledge that the information submitted is other than true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Signature of Contractor or Subcontractor: Date: Printed Name and Affiliation: Operator.signature and Certfi+catic�n see reverse for instructions "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I have no personal knowledge that the information submitted is other than true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Signature of Operator or"Duly Authorized Representative": Date: Printed Name and Affiliation: Page 5 of 5 Instructions for Signature/Certification Each inspection report must be signed and certified to be considered complete. Contractor or Subcontractor Signature and Certification Where you rely on a contractor or subcontractor to carry out the inspection and complete the inspection report,you should require the inspector to sign and certify each report. Note that this does not relieve you,the permitted operator,of the requirement to sign and certify the inspection report as well. Operator Signature and Certification At a minimum, the inspection report must be signed by either (1) the person who signed the NOI,or (2) a duly authorized representative of that person.The following requirements apply to scenarios (1) and (2): If the signatory will be the person who signed the NOI for permit coverage, as a reminder,that person must be one of the following types of individuals: • For a corporation:A responsible corporate officer. For the purpose of this subsection, a responsible corporate officer means: (i) a president, secretary, treasurer,or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy-or decision-making functions for the corporation, or (ii) the manager of one or more manufacturing, production, or operating facilities, provided,the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations;the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. • For a partnership or sole proprietorship:A general partner or the proprietor,respectively. • For a municipality, state, federal, or other public agency: Either a principal executive officer or ranking elected official. For purposes of this subsection, a principal executive officer of a federal agency includes (i) the chief executive officer of the agency, or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrator of EPA). If the signatory will be a duly authorized representative, the following requirements must be met: • The authorization is made in writing by the person who signed the NOI (see above); • The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field,superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and • The signed and dated written authorization is included in the SWPPP.A copy must be submitted to EPA, if requested. Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix E-Copy of Corrective Action Form (Note: EPA has developed a sample corrective action form that CGP operators can use. The form is available at https://www.epa.qov/npdes/stormwater-discharges-construction- activities#resources) EPA SWPPP Template, Version 2.1 2017 Construction General Permit Corrective Action Report Form - Field Version Purpose This Corrective Action Report Form is to assist you in preparing corrective action reports for EPA's 2017 Construction General Permit (CGP). If you are covered under EPA's 2017 CGP, you can use this form to create a corrective action report that complies with the minimum reporting requirements of Part 5.4 of the permit. You are only required to fill out this form if one of the conditions triggering corrective action in Part 5.1 or 5.3 occurs on your site. Routine maintenance is generally not considered to trigger corrective action. Corrective actions are triggered only for specific conditions that are identified below in the "Overview of Corrective Action Requirements." If you are covered under a state CGP, this form may be helpful in developing a report that can be used for that permit; however, it will need to be modified to meet the specific requirements of the permit. If your permitting authority requires you to use a specific corrective action report form,you should not use this form. Notes While EPA has made every effort to ensure the accuracy of all instructions contained in the Corrective Action Report Form, it is the permit, not the form, that determines the actual obligations of regulated construction stormwater discharges. In the event of a conflict between the Corrective Action Report Form and any corresponding provision of the 2017 CGP, you must abide by the requirements in the permit. EPA welcomes comments on the Corrective Action Report Form at any time and will consider those comments in any future revision of this document. You may contact EPA for CGP-related inquiries at cqp@epa.aov. Overview of Corrective Action Requirements Construction operators covered under the 2017 CGP are required to conduct corrective actions and report on progress made in correcting the problem condition(s) in accordance with the following requirements: Conditions Triggering Corrective Action (Parts 5.1 and 5.3) Corrective action is required whenever any of the following conditions occur at your site: • A stormwater control needs repair or replacement (beyond routine maintenance required under Part 2.1.4); or • A stormwater control necessary to comply with the requirements of this permit was never installed,or was installed incorrectly;or • Discharges are causing an exceedance of applicable water quality standards; or • A Part 1.3 prohibited discharge has occurred;or • EPA requires corrective action as a result of permit violations found during an inspection carried out under Part 4.8. Deadlines for Completing Corrective Actions (Part 5.2) For any condition triggering corrective action: You must immediately take all reasonable steps to address the condition (e.g. cleaning up contaminated surfaces so the material(s) is not discharged in subsequent storm events); If the problem does not require a new or replacement control or significant repair,you must complete the corrective action by the close of the next business day If the problem does require a new or replacement control or significant repair,you must complete corrective action (e.g., installing and making operational any new or modified control, completing repairs) by no later than 7 calendar days from the time of discovery of the condition. If infeasible to complete the installation or repair within 7 calendar days,you must document why it is infeasible and document your schedule for completing the corrective action as soon as practicable. If any of these actions result in changes to the stormwater controls documented in your SWPPP,you must modify your SWPPP within 7 calendar days. 1 Deadlines for Documenting Corrective Actions in a Report (Part 5.4) You are required to complete a corrective action report for each corrective action you take in accordance with the following deadlines. • Within 24 hours of identifying the corrective action condition,you must document the following: - The condition identified at your site; and - The date and time you identified the condition • Within 24 hours of completing the corrective action,you must document the following: - The actions you took to address the condition, and - Whether any SWPPP modifications are required. Instructions for Using This Report Form This Field Version of the Corrective Action Report Form is intended to be used in the field and filled out by hand. If you will be filling out the Corrective Action Report Form electronically (i.e., you will be typing in your findings), please use the Electronic Version of the Corrective Action Report Form available at https://www.epa.gov/npdes/stormwater-discharges-construction-activities#resources. The Electronic Version includes text fields with instructions for what to enter. The following tips for using this form will help you ensure that the minimum permit requirements are met: Review the corrective action requirements. Before you fill out this corrective action report form, read the CGP's Part 5 corrective action requirements.This will ensure that you have a working understanding of the permit's underlying corrective action requirements. • Complete a separate report for each condition that triggers corrective action. For each triggering condition on your site, you will need to fill out a separate corrective action report form. • Complete all required text fields. Fill out all text fields. Only by filling out all fields will the form be compliant with the requirements of the permit. (Note: Where you do not need the number of rows provided in the corrective action report form, you may leave those rows blank. Or, if you need more space to document your findings, you may add an additional sheet.) • Sign and certify each corrective action report. The operator or a duly authorized representative (see Appendix I, Part I.1 1.2) must sign and certify each corrective action report form for it to be considered complete. Where a contractor or subcontractor carries out your corrective actions, it is recommended that you also have that individual sign and certify the form, in addition to the signature and certification required of the permitted operator. The form includes a signature block for both parties. Include the corrective action report form with your SWPPP. Once your form is complete, make sure to include a copy of the corrective action report form in your SWPPP in accordance with Part 7.2.7.e of the CGP. Retain copies of all corrective action reports with your records. You must retain copies of your corrective action reports in your records in accordance with the requirements in Part 5.4.4 of the 2017 CGP. These reports must be retained for at least 3 years from the date your permit coverage expires or is terminated. Section-by-Section Instructions You will find specific instructions corresponding to each section of the report form on the reverse side of each page. These instructions were written in order to provide you with more details in terms of what EPA expects to be documented in these reports H Section A Initial Report(CP Part 5.4.1) (Co m lete this section within 24 hours©f identifying the ccandition that tri � ered corrective action Name of Project NPDES ID No. Today's Date Date Problem First Discovered Time Problem First Discovered Name and Contact Information of Individual Completing this Form What site conditions triggered the requirement to conduct corrective action (check the box that applies): ❑ A stormwater control needs repair or replacement (beyond routine maintenance required under Part 2.1.4) ❑ A stormwater control necessary to comply with the requirements of this permit was never installed, or was installed incorrectly ❑ A discharge is causing an exceedance of applicable water quality standards ❑ A Part 1.3 prohibited discharge has occurred ❑ EPA requires corrective action as a result of permit violations found during an EPA inspection carried out under Part 4.8 Provide a description of the problem: Deadline for completing corrective action (check the box that applies): ❑ Immediately take all reasonable steps to address the condition,including cleaning up any contaminated surfaces so the material will not discharge in subsequent storm events ❑ Complete by close of the next business day when problem does not require a new or replacement control or significant repair ❑ No later than 7 calendar days from the time of discovery for problems that require a new or replacement control or significant repair ❑ Infeasible to complete the installation or repair within 7 calendar days. Explain why it is infeasible and document schedule for installing control: Enter date of corrective action completion: Section B-Corrective Action Completion (CP Part 5.4.2) Com lote'this section no later than 24-hours ditercom letin the corrective d tion section B.1 -Why the Prcablem Occurred Cause(s)of Problem How You Determined the Cause and the Date You Add an additional sheet if necessary Determined the Cause 1. 1. 2. 2. Section B.2- tormwater Control Modifications Implemented to' Correct the Problem List of Stormwater Control Modification(s) Date of SWPPP Update Notes Needed to Correct Problem Completion Necessary? Add an additional sheet if necessary 1. ❑Yes ❑No If yes, provide date SWPPP modified: 2. ❑Yes ❑No If yes, provide date SWPPP modified: Page 1 of 2 Instructions for Filling Out the Initial Report(Section A) You must complete Section A of the report form within 24 hours of discovering the condition that triggered corrective action Name of Project Enter the name for the project. NPDES ID No. Enter the NPDES ID number that was assigned to your NOI for permit coverage. Today's Date Enter the date you completed this form. Date/Time Problem First Discovered Specify the date on which the triggering condition was first discovered.Also specify the time of the discovery. Name/Contact Information Provide the individual's name, title,and contact information as directed in the form. Site Condition That Triggered Corrective Action Under the CGP, corrective action is required when one of 4 triggering conditions occurs at your site or when EPA requires a corrective action as a result of a permit violation found during an EPA inspection.See CGP Parts 5.1 and 5.3.Check the box that corresponds to the condition that triggered this corrective action. Description of the Site Condition Provide a summary description of the condition you found that triggered corrective action under CGP Part 5.1 and the specific location where it was found. Be as specific as possible about the location; it is recommended that you refer to a precise point on your site map. If you have already provided this explanation in an inspection report,you can refer to that report. Deadline for Completing Corrective Action This deadline is fixed in CGP Part 5.2. For all projects,the deadlines are: (1) immediately take all reasonable steps; (2) by the close of the next business day when the problem does not require significant repair or replacement; (3) no more than 7 calendar days after the date you discovered the problem when the problem does require significant repair or replacement, or (4) if it is infeasible to complete work within the first 7 days, as soon as practicable following the 7th day. If your estimated date of completion falls after the 7-day deadline consistent with (3), above, explain (a) why you believe it is infeasible to complete work within 7 days, and (b) why the date you have established for making the new or modified stormwater control operational is the soonest practicable timeframe. Instructions for Filling Out the Corrective Action Completion Table (Section B) You must complete Section B of the report form no later than 24 hours after completing the correction action. Section B.1 -Why the Problem Occurred After you have had the opportunity to examine the problem more closely, provide details as to what you believe to be the cause of the problem, and specify the follow-up actions you took (along with the dates of such actions) to diagnose the problem.This is consistent with CGP Part 5.4.2. Section B.2-Stormwater Control Modifications Implemented Provide a list of modifications you made to your stormwater controls to correct the problem and the date you completed such work. Keep in mind that your work must be completed within the timeline specified in Section A for the completion of corrective action work. Also, if a SWPPP modification is necessary consistent with Part 7.4.1.a in order to reflect changes implemented at your site,indicate the date you modified your SWPPP. Keep in mind that SWPPP changes must be made within 7 days of discovering the problem that triggered this corrective action. Space is provided for you to include additional notes or observations regarding the change that you implemented at your site to correct the problem. Section Signature and Certification ( GP Part'' .4. ), Section C.l -Contractor,or,Subcontractor Signature and Certification "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information,the information submitted is, to the best of my knowledge and belief, true,accurate, and complete. I have no personal knowledge that the information submitted is other than true, accurate, and complete. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations." Signature of Contractor or Subcontractor: Date: Printed Name and Affiliation: rection_C.2-Operator Signature and.Certification` "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information,the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I have no personal knowledge that the information submitted is other than true, accurate, and complete. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations." Signature of Operator or"Duly Authorized Representative": Date: Printed Name and Affiliation: Page 2 of 2 Instructions for Signature and Certification (Section C) Each corrective action report must be signed and certified to be considered complete. Section C.1 -Contractor or Subcontractor Signature and Certification Where you rely on a contractor or subcontractor to complete this report and the associated corrective action,you should require the individual(s) to sign and certify each report. Note that this does not relieve you,the permitted operator, of the requirement to sign and certify the report as well. Section C.2-Operator Signature and Certification At a minimum, the corrective action report form must be signed by either (1) the person who signed the NOI,or (2) a duly authorized representative of that person.The following requirements apply to scenarios (1) and (2): If the signatory will be the person who signed the NOI for permit coverage, as a reminder,that person must be one of the following types of individuals: • For a corporation:A responsible corporate officer. For the purpose of this subsection, a responsible corporate officer means: (i) a president,secretary, treasurer,or vice-president of the corporation in charge of a principal business function,or any other person who performs similar policy-or decision-making functions for the corporation,or (ii) the manager of one or more manufacturing, production, or operating facilities, provided,the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations,and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. • For a partnership or sole proprietorship:A general partner or the proprietor, respectively. • For a municipality,state, federal, or other public agency: Either a principal executive officer or ranking elected official. For purposes of this subsection, a principal executive officer of a federal agency includes (i) the chief executive officer of the agency, or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrator of EPA). If the signatory will be a duly authorized representative, the following requirements must be met: • The authorization is made in writing by the person who signed the NOI (see above); • The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager,operator of a well or a well field,superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and • The signed and dated written authorization is included in the SWPPP.A copy must be submitted to EPA, if requested. Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix F-SWPPP Amendment Log Instructions (see CGP Part 7.4): - Create a log here of changes and updates to the SWPPP. You may use the table below to track these modifications. - SWPPP modifications are required pursuant to CGP Part 7.4.1 in the following circumstances: ✓ Whenever new operators become active in construction activities on your site, or you make changes to your construction plans, stormwater controls, or other activities at your site that are no longer accurately reflected in your SWPPP; ✓ To reflect areas on your site map where operational control has been transferred (and the date of transfer) since initiating permit coverage; ✓ If inspections or investigations determine that SWPPP modifications are necessary for compliance with this permit; ✓ Where EPA determines it is necessary to install and/or implement additional controls at your site in order to meet requirements of the permit; and - To reflect any revisions to applicable federal, state, tribal, or local requirements that affect the stormwater control measures implemented at the site. - If applicable, if a change in chemical treatment systems or chemically-enhanced stormwater control is made, including use of a different treatment chemical, different dosage rate, or different area of application. No. Description of the Amendment Date of Amendment Prepared by Amendment [Names and Title] INSERT DATE INSERT DATE INSERT DATE INSERT DATE INSERT DATE INSERT DATE INSERT DATE INSERT DATE EPA SWPPP Template, Version 2.1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix G-Subcontractor Certifications/Agreements SUBCONTRACTOR CERTIFICATION STORMWATER POLLUTION PREVENTION PLAN Project Number: Project Title: Operator(s): As a subcontractor, you are required to comply with the Stormwater Pollution Prevention Plan (SWPPP) for any work that you perform on-site. Any person or group who violates any condition of the SWPPP may be subject to substantial penalties or loss of contract. You are encouraged to advise each of your employees working on this project of the requirements of the SWPPP. A copy of the SWPPP is available for your review at the office trailer. Each subcontractor engaged in activities at the construction site that could impact stormwater must be identified and sign the following certification statement: I certify under the penalty of law that I have read and understand the terms and conditions of the SWPPP for the above designated project and agree to follow the practices described in the SWPPP. This certification is hereby signed in reference to the above named project: Company: Address: Telephone Number: Type of construction service to be provided: Signature: Title: Date: EPA SWPPP Template, Version 2.1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix H -Grading and Stabilization Activities Log Date Description of Grading Activity Description of Stabilization Measure Date Grading Date When Grading and Location Activity Ceased Stabilization Activity (Indicate Measures Initiated Temporary or Initiated Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent INSERT DATE INSERT DATE INSERT DATE ❑ Temporary ❑ Permanent EPA SWPPP Template, Version 2.1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix I-SWPPP Training Log Stormwater Pollution Prevention Training Log Project Name: Project Location: Instructor's Name(s): Instructor's Title(s): Course Location: Date: Course Length (hours): Stormwater Training Topic: (check as appropriate) ❑ Sediment and Erosion Controls ❑ Emergency Procedures ❑ Stabilization Controls ❑ Inspections/Corrective Actions ❑ Pollution Prevention Measures Specific Training Objective: Attendee Roster: (attach additional pages as necessary) No. Name of Attendee Company 1 2 3 4 5 6 7 8 EPA SWPPP Template, Version 2.1 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix J -Delegation of Authority Form Delegation of Authority I, (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit (CGP), at the construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. (name of person or position) (company) (address) (city, state,zip) (phone) By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in Appendix I of EPA's CGP, and that the designee above meets the definition of a "duly authorized representative" as set forth in Appendix I. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I have no personal knowledge that the information submitted is other than true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Company: Title: Signature: Date: EPA SWPPP Template, Version 1.0 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix K- Endangered Species Documentation The Massachusetts Natural Heritage and Endangered Species Atlas (MassGIS 2018) does not identify an area of estimated habitat, priority habitat, certified vernal pools or potential vernal pools on or near the project site-see figure below. U.� �c 6� <, s P d � �� ✓(: Gyp r II�K. 'IIII ; If y' f Z 7 j I t"I pl I' 7t r;. I Y a kV i VassD—(�V M';M� Names, 4 i f�,00O''�d yy S Road's g Road'; I � III State I I I I I I I IIII' v, r ,m a I ns I fEl I � � ; N H E S P Es wriat 0 Hat)fats o f R a�r e � 1 qI��N-gll�l' II f ; �� q "p�gl'��gk�;� B Rare,, �"°�q��C�'a�q�b� �q�,� pI V 1 r u II p I �I � i�ylr yl ll'vl,lu� � I a I I f I u I i 4 �II V I r l Ill I Nos 21'1 2019 Color a r IIII r (US) y v , �m ad EPA SWPPP Template, Version 1.0 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix L-Historic Properties Documentation No historic sites/properties have been identified by the Town of North Andover as existing at or near the project site-see below. Mossochusetts ,Cultural S ,�M, ,," A C R, I MHC * r MAtRIS 0r a w d" t/,t-),are e cif'��P Iur �ar��CI w asin tt',f e III ol h,win,,,q semrchi t riteri& Sl dAU:, II .. o: 1(0 0 w e, °ri,;'i 0"'5 oo d For n7io tinis page andlhiniawv to,it s"I -11"l'ck he ' � u t �llll.I�I�Ul�pl��l�r'I � w�iNi��. �!wl,�ll�l�illl!��II��II 1 EPA SWPPP Template, Version 1.0 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Appendix M- Rainfall Gauge Recording Use the table below to record the rainfall gauge readings at the beginning and end of each work day. An example table follows. Month/Year Month/Year Month/Year Day Start time End time Day Start time End time Day Start time End time 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 10 10 10 11 11 11 12 12 12 13 13 13 14 14 14 15 15 15 16 16 16 17 17 17 18 18 18 19 19 19 20 20 20 21 21 21 22 22 22 23 23 23 24 24 24 25 25 25 26 26 26 27 27 27 28 28 28 29 29 29 30 30 30 31 31 31 EPA SWPPP Template, Version 1.0 Stormwater Pollution Prevention Plan (SWPPP) Proposed Redevelopment 1600 Osgood Street North Andover, MA 01845 Example Rainfall Gauge Recording April 2020 May 2020 June 2020 Day 7:00 am 4:400 pm Day 7:00 am 4:00 pm Day 7:00 am 4:00 pm 1 -- -- 1 0.2 0 1 0 0.4 2 -- -- 2 0 0 2 0 0 3 0 0 3 0.1 0.3 3 -- -- 4 0 0.3 4 0 0 4 -- -- 5 0 0 5 0 0 5 0 0 In this example (for only partial months), 0.25-inch rainfall inspections would have been conducted on April 4 and June 1. EPA SWPPP Template, Version 1.0