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HomeMy WebLinkAbout2017 Response Comments C51 PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET, HAVERHILL. MA 01830 tel: 978-373-0310 www.csi-engr.com fax 978-372-3960 July 20,2017 Rebecca Oldham, Staff Planner Town of North Andover Planning Department 120 Main Street North Andover MA 01845 RE: Peer Review#3 Land disturbance Permit Application 1975 Salem Street,North Andover MA Dear Rebecca: The following items, numbered in accordance with the review letter of June 28,2017 by TEC, are responses to items TEC considers to be incomplete. To minimize the length of the letter I have not listed any items deemed to be adequately addressed by the reviewer. Response to review comments 3. The responses below for other items commented on by the reviewer adequately address compliance with North Andover Stormwater Management and Erosion Control regulations. 22. The areas have been adjusted to within .008 acres. The existing conditions area is 4.819 acres and the proposed area is 4.811 acres. Considering the amount of reduction in off site flow the difference is insignificant. 32. The O&M Plan for post construction BMP maintenance has been modified to include a signature and a map as requested. 36e A detail has been added 36j. The construction entrance has been lengthened to 50 feet. 37. The plan has been revised 41. The plan has been revised. 42. The plans have been revised Very truly yours Philip Christiansen P.E. INC { cs'l PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET, HAVERHILL, MA 01830 tel:978-373-0310 www.csi-engr.com fax 978-372-3960 CS1 PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET,HAVERHILL,MA 01830 tei:978-373-0310 www.csi-engr.com fax 978-372-3960 July 3,2017 Rebecca Oldham, Staff Planner Town of North Andover Planning Department 120 Main Street North Andover MA 01845 RE: Peer Review#2 Land disturbance Permit Application 1975 Salem Street,North Andover MA Dear Rebecca: The following items, numbered in accordance with the review letter of June 28,2017 by TEC, are responses to items TEC considers to be incomplete. To minimize the length of the letter I have not listed any items deemed to be adequately addressed by the reviewer. Response to review comments 3. The responses below for other items commented on by the reviewer adequately address compliance with North Andover Stormwater Management and Erosion Control regulations. 9. Additional existing topography within 50 feet of the property boundary has been added 'u to the plan adjacent to the onsite topography previously shown. 12. The limit of work line was on the original submittal on sheet 2. It was not on sheet 2 on the revised plans submitted June 14,2017 but was clearly indicated on the Landscape submitted on that same date. It is shown and labeled on the Proposed Site Plan submitted herewith. 15. The test pits (TP) locations are labeled on the plans. The Soil Evaluator, Steve Erikson labeled them Deep Holes (DH) in the Soils report but labeled them in the field notes as TP. DH and TP are equivalent. 16. The times of concentration for all sub catchments are contained in the HydroCAD report. The length of flow path, slope and CN are all contained in the report and each of these is used to calculate the time of concentration. The capacity of the culvert is also contained in the report. Manual calculations of time of concentration, culvert capacities and flow velocities are not done when those parameters are calculated by a program that is national recognized as being accurate in its development and function. The infiltration rate selected of 4 inches per hour is reasonably conservative considering the percolation CS1 PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET,HAVERHILL,MA 01830 tel:978-373-0310 www.csi-engr.com fax 978-372-3960 rates ranged from 1 to 9 min/in and the penneability of C horizon of a Carlton soil is 6 to 20 inches per hour. We have provided all that is necessary for a proper hydrologic analysis. 18. Massachusetts Stormwater Management Standards do not apply to projects of 4 or fewer lots. The project contains only 3 lots and therefore by definition without any controls what so ever complies with Massachusetts Stormwater Standards. The project complies with regulation 7.2A a) in that the design"attempts to reproduce natural hydrologic conditions with respect to ground and surface waters". The project complies with 7.2Ab) in that LID was used to the "maximum extent practicable". LID does not usually apply to individual lots. The concept of LID refers to alternative designs to minimize paving and to avoid the concentration of storm flows by eliminating drainage systems. The development of large commercial or industrial sites and subdivisions are projects in which the application of LID is most beneficial. Driveways must be paved and land must be cleared for houses and septic systems and wells. However,the project does utilize infiltration and super elevated drives to minimize runoff and reintroduce rainfall to the water table. The project complies fully with 7.213 The project complies with 7.2C in that reduction in peak flow rates are accomplished through infiltration through chambers and the detention pond. A review of the HydroCAD report will show that for all but the 100-year storm all of the stormwater is controlled by infiltration. Thus, confirming that infiltration exceeds the requirements of the Mass Stormwater Management Handbook. The project complies with 7.21) in that all the driveway runoff water is filtered through stone before entering the infiltration chambers and entering the ground. The BMPs are sized to accept and retain all but the 100-year storm and therefore far exceed the required water quality volume. of 1/2 inch of runoff. 20. Drainage area P-5 is internal to the property and cannot affect offsite flow rates. This comment was adequately addressed in the previous responses. 22. See revised plans and Hydrology report. 23. The previous comment was addressed by changing all sheet flows to 50 feet. See revised hydrology report. 26. The legend has been corrected. Notes have been added concerning the "return to <: natural vegetation. I C f* CHRISTIANSEN & SERGI, INC S1 PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET,HAVERHILL,MA 01830 tel:978-373-0310 www.csi-engr.com fax 978-372-3960 27. The plans must be taken as a whole and the information required by section 8.lb) is contained in all of the submitted information. C_onstructioaesequeuce and other notations have been added to the Proposed Site Plan to comply with the consultants review. 30. The plans were adequate for Planning and Conservation review without the legend. I legend has been added and is adequate for the work. 36. h The u/u is underground utilities as stated in the legend. The roof drainage is included in the total impervious area of each catchment area. 36i. A 2:1 slope has been added to the detail 36j. The comment was addressed previously and the construction entrance is adequate. 37. The plan has been revised 38. The manning value has been changed as suggested 39 The detention basin has been corrected 40. The changes have been made as requested. Very truly yours Philip G. Christiansen P.E. i AW CHRISTIANSEN & SER I INC Va PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET,HAVERHILL,MA 01830 tel:978-373-0310 www.csi-engr.com fax 978-372-3960 June 14,2017 Rebecca Oldham,Staff Planner Town of North Andover Planning Department 120 Main Street North Andover MA 01845 RE: Land Disturbance Permit Application 1975 Salem Street Response to Peer review Dear Ms. Oldham: TEC has done a thorough review of the Land Disturbance and Stormwater application. However, it is important to keep certain facts in mind when considering the comments: 1.Mass Stormwater regulations do not apply to developments of four or fewer lots 2.Mass BMP guidelines are not standards or regulations 3.The BMP guidelines are full of errors and conflicting information 4.On of the last sections of the Mass Erosion Control and Sedimentation Guidelines(referred to by TEC) addresses single lot development and small projects'and offers only general advice without any design guidelines standards or regulations. (see attached) The proposed project, development of three lots, has been designed with stormwater peak mitigation controls and infiltration with the use of a common driveway to minimize impervious surfaces,however it is not an LID project in the usual application of that term. LID most usually refers to the use of soft rather than hard infrastructure to develop a subdivision or a large commercial site. In an LID project curbing and catch basins may be eliminated in favor grass swales and large detention ponds at the end of drainage systems replaced with decentralized smaller basins, infiltration basins and rain gardens. Sidewalks are minimized or eliminated and roadway pavement widths reduced to minimize impervious surfaces. in this project there aren't any sidewalks,curbing or catch basins to eliminate because such construction is not necessary in a single lot development.'Tbus,the section of the Regulations that reference LID don't apply to a project such as this although components of LID principles are included in the design-.-,- The responses to TEC review letter are below in the numerical order in which they were made. 1.We had filed for a common driveway in addition to the Frontage exception lot and access not through the lot frontage 2.The project was reviewed,by t_he Conservation Commission an an-Order--of Con-ditions,_issued by the Commission approving the project. I 3.The plans as submitted comply with Sections 7.1 and 7.2 of the North Andover Stormwater Management and Erosion Control regulations.Additional summaries, descriptions and modifications as requested by the TEC have been added in the attached plans and reports to supplement the original filing. 4.This project had been before both the Conservation Commission and the Planning Board for many months and several public hearings were held. Both the Commission and the Board approved the project for the permits requested.The project was described to the Board on numerous occasions including a description of Stormwater controls. Not including the project description in this application was an oversight and a description is contained with the submitted information. S. The entire parcel consists of three lots and the area of each is on the plan.The entire parcel area of 331,307 s.f. has been added to Sheetl.The drainage areas are listed on the drainage plans and the area for each drainage area is listed in the HydroCAD report. I have added the areas to the Drainage Plan to assist the reviewer.We had previously reviewed the total disturbance for a number of alternative designs suggested by the Board. Of those this project offered the least disturbance of the alternatives investigated.The total disturbance has been added to sheet 2. 6.The proposed drive easement was labeled on sheet 2 of 4. A label has been added to sheet 1.The note has been corrected. 7.The lot labels are on sheet 1(see attached) 8.The driveway(actually a roadway)was shown on sheet 2. 9. 1 have added a sheet which contains the required slope information. 10.The only wetland resource area on site is a small isolated wetland/vernal pool in the extreme southerly corner of lot 3 as shown on sheet 1.The site lies within the buffer zone of a wetland to the west,a wetland to the east across Salem Street and an isolated wetland along the northerly property line.The portion of the site that borders Salem Street lies within the Riverfront area.All resource areas were identified on the submitted plans. 11.A vernal pool is shown on sheet 1.The parcel is in both priority and estimated habitat area.The proposed work was determined by the NHES,P to be a "no take". (see attached letter from Fisheries and Wildlife) 12.The property is fully wooded so that a tree line cannot be shown on the plan.The limit of work labeled on the plan is the proposed tree line. 13.There aren't any septic systems within 100 ft of the property 14.The flow paths have been added to the plans 15.The sol is listed as a Canton.The NRCS data is attached as well as the onsite soil testing results that showed the parent soil to be a loamy sand.Groundwater was not observed. Percolation rates ranged from 1 to 9 min/inch. i 16.The information requested is contained within the HydroCAD report. 17.The Locus map has been changed from 400 to 800 scale. 18.The reference bythe consultant to section 7.2A Low Impact Design is somewhat misplaced.Typically LID design refers to subdivision design that varies from traditional design in that pavement width are minimized,swales are used rather than hard piping and Stormwater is treated throughout the site rather than at one device to which all drainage is directed.Additionally,the Massachusetts Stormwater Handbook does not contain requirements but rather"Guidance" as specified in 7.2Ab)of the North Andover Stormwater Management regulations. The project,a three lot development meets the requirements of the Massachusetts Stormwater Regulations in that it is only a three lot project and the regulations do not apply to a three lot project. The project utilizes a common drive to minimize pavement,super elevated_drives to direct water to stone shoulders and infiltration_chambers to rechareto_ground water and_to reduce peak flows_rates. The use of these design components proves the project to be an LID project and one that meets the guidelines of the Massachusetts Stormwater Handbook. 19. Revised drainage calculations are included as requested 20,The summaries are included in the HydroCAD report for each drainage area.As required by c)the post-development peak rates were shown to be less than the pre-development peak rates.As required by item f)the total volume of discharge as well as peak rates were evaluated at each control point. 21. 1 have included larger drawings of pre and post development drainage plans. 22.The HydroCAD files have been separated as requested and are included with this submittal. 23.The 50 ft sheet flow was used in all but two areas. In area P-3A sheet flow was used for 100 feet because it is sheet flow from a driveway and shallow concentrated flow was no appropriate for such a small distance.The distance used in P-1132 was 72 feet and only a minor difference both have been changed to reflect the 50 ft sheet flow 24.The total impervious pavement on the site is 12,200 square feet.The soil is a Canton which is in the B hydrologic group. Required recharge is.35 inches per square foot of impervious area.Total volume of recharge required is _ 12,200 s.f.x.35 inches/s.f./12 inches/ft=355 c.f. The chambers volume plus the void volume of the stone on lot 3 is 658 c.f.The chamber volume plus the stone void volume on the common driveway is 5423 c.f. Total volume provided_6081 c.f.>355 c.f. requires.,_ The above does not include the infiltration provided by the system design. 25.The driveways in the areas of the infiltration chambers have a 5 foot wide shoulder of crushed stone that drains into the Stormtech chambers.The stone rovides the retreatment t6the s `_ _ _ � p p torrnwate-r'_­'___ _. before it enters the chambers.The filter stone in the 5 foot shoulder is not included in the storage stone used in the above calculations. Infiltration provides, by BMP guidelines,$QO removal of TSS. i Considering the application of the design system to a driveway it is more than sufficient to meet State regulations(which don't apply to projects of four lots or fewer)and more than sufficient to meet the BMP Guidelines. 26.We have added a landscape plan to the design drawings.,' The majority of the site will remain wooded.The disturbed_riverfro_nt area along the drives will be allowed to revegetate to forest.The remainder of the cleared land will be lawn and ornamental planting beds common to new homes in North Andover.Specifics as to the type of grasses, mulch and ornamentals to be placed on each lot will be up to the new home owner or contractor who will build the homes. 27.An erosion and sedimentation control plan has been added to the plan set 28.A silt sack was included in the detail sheet and it designated use is in the single catch basin shown on the plan. 29.The note has been corrected. 30.A legend has been provided 31.The only drainage area increase in peak is to an area within the site.There isn't any requirement within the rules prohibiting increases in flow or rates on one's own properties.There isn't any need to revise the plans as the peer reviewer has requested. 32.The 0&M plan will be signed by the applicant as required by 9.1a)ii prior to start of construction and with the posting of the bond.The information as required by 9.1a)iv has been provided. Information required by 9.1a)v is included in the submittal.Separate Stormwater easements are not required.The common driveway easement will include the stormwater system in that area. It will be recorded with the plan. 33.An 0&M plan is included 34.All buffers are on the plan and the 200 ft riverfront line type has been changed 35.The Conservation Commission has since determined the potential vernal,pgol is not,-verna.l,pool but rather an isolated wetland.The septic system as shown is greater than 100 ft from the wetland. 36. a.The riprap detail is on sheet 4 b.the leach chambers are on sheet 3 c.details of the septic systems and septic tanks are not need to review this stormwater plan. d.The location of the wells are on the plans. Details are not needed e. Underground utility details are not necessary f.A detention pond detail has been included g.A note has been added to the landscape plan concerning loam and seed. h. Roof drains are not being used. i.There isn't any need to restrict a temporary stockpile to 2:1. It is not realistic to expect such a requirement to be followed. j.There aren't any standards for construction exits developed by Mass DEP,there are only guidelines. The Construction entrance/exit detail is one we have used for 30 years and has proved to be effective. It is far wider than the state recommends which 1 consider to be better than the state recommendation. The detail will not be changed. a Very truly yours Philip G. Christiansen P.E. i 320 Soil Bioengineering i Notes: Table prepared by R.DeVergilio,Natural Resources Conservation Service, Amherst MA.Adapted from NRCS data base`Plants For BioEngineering, Uses, H.W.Everett, 11/95'.Native plant review by the Massachusetts Native Plant Advisory Committee. Special Note...... `Streamco'and Bankers'are not native to Massachusetts. It is recommended they only be used in combination with native species. 1/Plant Material Types: `All'includes Dormant Fascines,Stakes,Brush Mattresses, Layering, and Cuttings as well as Rooted Cuttings and Plants. 2/Western Mass.includes Berkshire,Franklin,Hampshire,and Hampden Counties. 3/Tree species, such as cottonwood,poplar and black willow, are recommended for riparian area plantings and are not recommended for establishment upon the streambank itself due to potential for windthrow at maturity, and subsequent damage to the streambank. 4/ Viburnum opulus is similar to V.trilobum and is often confused with it. V. opulus is introduced to Massachusetts. Streambank Zones: Lower is at or near the normal waterline to the upper limit of saturation due to capillary action. Mid is the surface area above the upper limit of the lower zone to about 3 feet from the top of bank. Upper is the surface area about 3 feet from the top of bank and extending into the riparian zone. Erosion:and Sediment Control BeA anagernent Practices for.individual Hornesites and Small Parcel Construction on small developments can cause large amounts of sediment to be transported to receiving waters.The following are some of the damaging activities and conditions that may occur during development: Exposed and unprotected soil is often left throughout the development.When runoff occurs,sediment is transported into the nearest stormwater facility or stream, eventually clogging it. Vehicles and heavy equipment track soil from the development onto the street. Gullies formed by tire tracks become channels for runoff flow. Vegetation bordering streams or lakes is often removed during construction.This increases the water temperature by removing shade.An increase in water temperature can contribute to algae blooms and may change the species composition of the lake or stream. Because the vegetation has been removed,there is no barrier to prevent sediment from entering the stream.This can clog spawning grounds and fish gills. BMPs for Homesites and Small Parcels 321 These problems may occur during work performed by subcontractors who are on-site for a very short time. Cooperation and communication between developers, builders,and subcontractors are essential to minimize erosion and damage to the environment. Clearing and Grading Plan.and implement proper clearing and grading of the site.It is important to clear only the areas needed, Lj^ thus keeping exposed areas to a minimum,Phase the clearing so that only those areas that are actively being worked are uncovered.Clearing limits should be flagged prior to the start of clearing work. Excavated Basement Soil Locate excavated basement soil a reasonable distance behind the curb, such as in the backyard or side yard area.This will increase the distance eroded soil must travel to reach the storm sewer system.Soil piles should be covered until the soil is either used or removed,Piles should be situated so that sediment does not run into the street or adjoiningyards. Backfilling Backfill basement walls as soon as possible and rough grade the lot. This will eliminate large soil mounds which are highly erodible and prepares the lot for temporary cover which will further reduce erosion potential. Removal of Excess Soil Remove excess soil from the site as soon as possible after backfilling.This will eliminate any sediment loss from surplus fill. Management Of Soil Banks If a lot has a soil bank higher than the curb,a trench or berm should be installed moving the bank several feet behind the curb.This will reduce the occurrence of gully and rill erosion while providing a storage and settling area for stormwater. i BMPs'for Honiesites and Small Parcels 322 Construction Road Access Apply gravel or crushed rock to the driveway area and restrict truck traffic to this one route.Driveway paving can be installed directly over the gravel.This measure will eliminate soil from adhering to tires and stops soil from washing into the street.This measure requires periodic inspection and maintenance including washing,top-dressing with additional stone, reworking and compaction. Soil Stabilization Stabilize denuded areas of the site by mulching,seeding, planting, or sodding. Street Cleaning Provide for periodic street cleaning to remove any sediment that may have been tracked out.Sediment should be removed by shovelling or sweeping and carefully removed to a suitable disposal area where it will not be re-eroded. References Lobdell,Raymond,A Guide to Developing and Re-Developing Shoreland Proper_,yin New Hampshire,North Country resource Conservation and Development Area,Inc.,Meredith,NH, 1994. Minnesota Pollution Control Agency,Division of Water Quality,Protecting Water QualilyIn Urban Areas Best Manageinent Practices for Minnesota, MN, October, 1989. Washington State Department of Ecology,StorinwaterManagement Manual for the Puget Sound Basin, Olympia,WA,February, 1992. Erosion and Sediment Control Best Management Practices for. Sand and Gravel Pits Erosion from sand and gravel pits can contribute a large amount of sediment to adjacent water courses.Sand and gravel also provides a very porous medium for transporting soluble pollutants to the underlying groundwater. Many sand and gravel operations are located within or near the recharge area of public and private wells.A major threat to groundwater exists when excavation.activities take place in these areas. Exposure of the saturated zone in recharge areas can leave groundwater resources vulnerable to contamination because it decreases filtering.An added problem is that abandoned excavation pits have been used for the unregulated disposal of solid and liquid wastes and salt-laden snow. DIVISION OF FISHERIES &WILDLIFE I Rabbit bill Road,Westborough,MA 01591. • Ix:(508)381)..6300 1 f:(508)389.7890 urns+ MASS.G0V/MA'SSWILIDLIFE M A S S WILD LIFE lack Buckley,Director October 25,2016 Thomas Hodgson Livingstone Development Corp. PO Box 50 Tewksbury MA 01876 North Andover Conservation Commission 1600 Osgood Street Building 20 Suite 2-36 North Andover MA 01845 RE: Applicant: Thomas Hodgson Project Location: Lots 1-3 Salem Street Project Description: Two(2) Driveways,Infiltration Trench,Grading and Utilities for the Construction of Three(3)Single Family Homes DEP Wetlands File No,: 242-1689 NHESP File No.: 16-36091 Dear Commissioners&Applicant: The Natural heritage & Endangered Species Program of the Massachusetts Division of Fisheries & Wildlife (the "Division") received a Notice of intent with site plans (dated October 5, 2016) in compliance with the rare wildlife species section of the Massachusetts Wetlands Protection Act Regulations (310 CMR 10,59). The Division also received the MESA Review Checklist and supporting documentation for review pursuant to the MA Endangered Species Act Regulations(321 CMR 10.18). WETLANDS PROTECTION ACT(WPA) Based on a review of the information that was provided and the information that is currently contained in our database,the Division has determined that this project,as currently proposed, will not adversely affect the actual Resource Area Habitat of state-protected rare wildlife species. Therefore, it is our opinion that this project meets the state-listed species performance standard for the issuance of an Order of Conditions. Please note that this determination addresses only the matter of rare wildlife habitat and does not pertain to other wildlife habitat issues that may be pertinent to the proposed project. MASSACHusETTs ENDANGERED SpEciEy ACT(MESA) Based on a review of the information that was provided and the information that is currently contained in our database,the Division has determined that this project,as currently proposed,will not result in a prohibited Take of state-listed rare species. This determination is a final decision of the Division of Fisheries and Wildlife pursuant to 321 CMR 10.18. Any changes to the proposed project or any MASSWILDLIFE NHESP No,16-36091,Page 2 additional work beyond that shown on the site plans may require an additional filing with the Division pursuant to the MESA. This project may be subject to.further review if no physical work is commenced within five years from the date of issuance of this determination,or if there Is a change to the project. Please note that this determination addresses only the matter of state-listed species and their habitats. if you have any questions regarding this letter please contact Daisy Medelros, Endangered Species Review Assistant,at(508)389-6357. Sincerely, Thomas W. French, Ph.D. Assistant Director cc: Lois LaChapelle Steven Eriksen, Norse Environmental Services, Inc, MA DEP Northeast Region MASSWILDLIFE i Project Description—Three Lot Development—1975 Salem Street The project consists of development of 3 building lots on 331,307 s.f. of land. One lot meets the requirements of the zoning district and two are frontage exception lots. The two frontage exception,lots will be accessed by a common driveway. The third lot will have its own driveway. See Sheet 1 of the submitted plans for lot areas and frontages. The project lies in the buffer zone of wetlands and within the riverfront area of Boston Brook.All disturbed areas within the Boston Brook riverfront area outside of the driveways and shoulders will be allowed to return to their natural vegetative state as designated on sheet 6. Stormwater runoff will be controlled by a small detention pond and infiltration basins at the end of each driveway and in-the case of the common driveway along its length. See sheet 3 for the overall layout and sheets 3 and for an overall view of the property and construction details as well as driveway profiles. The homes will be served by individual private wells and septic systems. Soil testing has already been performed and the soils found to be suitable for septic systems. The individual lot owners will be responsible for maintaining the stormwater systems on their lots while those systems servicing the common driveway will be maintained by a homeowners association of the two property owners. i i i i 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 1.0 OWNERSHIP AND RESPONSIBILITY 1.1 Stormwater Management System Owners: The owners of the land(Livingstone Development Corp., and any successors) on which the stormwater management systems are located shall be the owners of the systems. 1.2 Parties Responsible for Operation and Maintenance: The general contractor of the project shall be responsible for the operation and maintenance of the stormwater management systems during construction. 2.0 IDENTIFICATION OF POTENTIAL STORMWATER POLLUTANTS The purpose of this section is to identify pollutants that could impact storm water during the construction of this project. 1.3 Significant Material Inventory Pollutants that result from clearing, grading, excavation and building materials that have the potential to be present in storm water runoff are listed in Table 1. This table includes information regarding material type,chemical and physical description and the specific regulated storm water pollutants associated with each material. 1.4 Potential Areas for Storm Water Contamination The following potential source areas of storm water contamination were identified and evaluated: ■ Cleared and graded areas; ■ driveway construction; ■ Building construction; ■ Construction site entrance; ■ Tree removal areas; ■ All undisturbed areas. i 1975 Salem Street, North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 t Table I Potential Construction Site Storm Water Pollutants ........... 'TRADE NAmr, CHEMICAL/PHYSICAL STOWWATER MATERIAL IDESCRIPTION(') POLLTJTANTS(") Pesticides(insecticides, ^TM Chlorinated hydrocarbons, Various colored to colorless fungicides,herbicides, organophosphates,carbamates, LodenticiLe�) liquid,powder,pellets,or grains arsenic Fertilizer solid Nitrogenphosphorous r as p _ Plaster White granules of powder Calcium sulphate,calcium carbonate, — . sulfuric acid ------ ...... ...... Colorless,blue or yellow-green Perchloroethylene,menthylene Cleaning Solvents chloride,trichloroethylene, liquids petroleum distillates Bituminous Asphalt solid pe troleum distillates Concrete White solid Limestone sand Glue,adhesives White or yellow liquid Polymers, Paints Various colored liquid Metal oxides,Stoddard solvent,tale, calcium carbonate,arsenic d__ Naphtha Wastewater from construction equipment washing: Water Soil,oil and grease,solids Wood preservatives Clear,ainber or dark brown liquid Stoddard solvent,petroleum distillates,arsennF2pyer, hromiuni Brown or red oily petroleum Hydraulic oil/fluids Mineral oil hydrocarbon Colorless,pale brown or pink Benzene,ethyl benzene,toluene, Gasoline etroleum hydrocarbon x lene,MTBE Petroleum distillates,oil and grease, Diesel Fuel Clear,blue-green to yellow liquid na alene,xy eines Pale yellow liquid petroleum Kerosene Coal oil,petroleum distillates ocarbon 111 Antifreeze/coolant Clear groon/yellow liquid Ethylene glycol,propylene glycol, Erosion Soil,sediment tll Data obtained from MSDSs when available, Table 2 presents site specific information regarding storm water pollution potential for each of these areas. 1975 Salem Street. North Andover Mass. i Pollution Prevention and Operations and Maintenance Plan Construction Phase Date; April 10,2017 Table 2 Locations of Potential Sources of Storm Water Contamination I� -F-RT ON,TIA"LS O*-R—- 1^ WATiEM i DRMKArm A ASttl POTENTIAL � YOU NTIAL PROD I;NIS CONT'AMNATION POLLUTANTS DINT Erosion of soils from !f Soil erosion,fertilizer, cleared and graded areas Cleared and graded areas All pesticides have the potential to discharge into protected .. i regsouyrce areas _._-._ lic iland antifreeze from clearing, grading and asphalt application construction Asphalt hydraulic oil, equipment. Gasoline and diesel fuel spills while driveways and gasoline,antifreeze,soil All erosion,fertilizer, fueling construction construction site entrance equipment,and erosion of pesticides I exposed and stockpiled soils. Asphalt chemicals can be released to storm water if a rain event occurs before curing is complete. Accidental spills of paints and cleaning solvents, Plaster,cleaning solvents, leaking hydraulic oil and asphalt,concrete,paints, antifreeze from hydraulic oil,gasoline, construction equipment, antifreeze,soil erosion, gasoline and diesel fuel Builduig construction All j spills while fueling I fertilizer,pesticides, construction equipment, glue/adhesives,curing erosion of exposed and compounds,wood stockpiled soils,and preservatives,kerosene degradation of scrap dry wall can potentially eontaininate storm water. Ruts caused by logging Tree Soil erosion,fertilizer, equipment can fill with I removal areas pesticides water,preventing complete re-vegetation. No storm water related All undisturbed areas All None issues with completely vegetated areas. i 1.5 Summary of Available Storm Water Sgm pling Data No storm water sampling data is available for this site. i 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date:April 10,2017 STORMWATERMANAGEMENT CONTROLS The purpose of this section is to identify the types of temporary and permanent erosion and sediment controls that will be used during construction activities. The controls will provide soil stabilization for disturbed areas and structural controls to divert runoff and remove sediment. This section will also address control of other potential storm water pollutant sources such as construction materials(paints,concrete dust, solvents, and plaster),waste disposal, control of vehicle traffic, and sanitary waste disposal. ; 1.6 Tem�oraiy and Permanent Erosion Control Practices A list of best management practices(BMPs)is included as Table 3;. 13 Site Wide Control Measures To prevent soil from washing into adjacent resource areas the following BMPs will be implemented; 1.7.1 SiltSoxx barriers will be placed along the perimeter of the area to be cleared and graded before any clearing or grading takes place. 1.7.2 Soil stockpiles are to be covered.and surrounded by a double row of hay bales. 1.7.3 A construction entrance will be installed Table 3 BEST MANAGEMENT PRACTICE MAINTENANCE i BEST i DRALNAGE TYPE � MAINTENANCE MAIt'AGEMENT �. ARE,AS PRACTICE _-- Construction Built up sediment will be removed from behind siltsoxx fence SiltSoxxT All Phase— when it has reached one-third the height of the fence, The paved street adjacent to the site entrance will be swept daily to remove excess mod,dirt,or rock tracked from the site, Stabilized -Dump trucks hauling material from the construction site are to Construction All Construction have their payload covered with a tarpaulin. Entrance Phase -The stabilized construction entrance will be inspected for sediment tracked on the road,for clean gravel,and to make sure i that the culvert beneath the entrance is working and that all traffic ij use the stabilized entrance when leaving the site. 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date:April 10,2017 1.8 Construction Practices to Minimize Storm Water Contamination All waste materials will be collected and stored in a securely lidded metal dumpster rented through a reputable, licensed solid waste management company. The dumpster is to be located outside the buffer zone to resource areas on site. All trash and construction debris from the site will be deposited in the dumpster. The dumpster will be emptied a minimum of twice per week and the trash disposed of in accordance to all local, state and federal regulations. All personnel will be instructed regarding the correct procedure for waste disposal. All sanitary waste will be collected from the portable units a minimum of three times per week by a licensed sanitary waste management contractor. Good housekeeping and spill control practices will be followed during construction to minimize storm water contamination from petroleum products,fertilizers,paints and concrete. Good housekeeping practices are listed below: 1.8.1 A stabilized construction entrance will be constructed at the curb cuts in Salem Street to reduce vehicle tracking of sediments. 1.8.2 The paved street adjacent to the site entrance will be swept as needed to remove excess mud,dirt,or rock tracked from the site. 1.8.3 Dump trucks hauling material from the construction site are to have their payload covered with a tarpaulin. 1.8A All ruts caused by equipment used for cutting and removing of trees will be graded and re-vegetated. 1.8.5 Fertilizers will be applied only in the minimum amounts recommended by the manufacturer. 1.8.6 Fertilizers will be worked into the soil to limit exposure to storm water. 1.8.7 Fertilizers will be stored in a covered shed and partially used bags will be transferred to a sealable bin to avoid spills. 1.8.8 All vehicles on site will be monitored for leaks and receive regular preventative maintenance to reduce the chance of leakage. 1.8.9 Petroleum products will be stored in tightly sealed containers which are clearly labeled. 1.8.10 Spill kits will be included with all fifeling sources and maintenance activities. 1.8.11 Any asphalt substances used on-site will be applied according to the manufacturer's recommendation. 1.8.12 Sanitary waste will be collected from portable units a minimum of three times a week to avoid overfilling. 1.8.13 A covered dumpster will be used for all waste materials. 1.8.14 All paint containers and curing compounds will be tightly sealed and stored when not in use. Excess paint will not be discharged into the storm sewers,but will be properly disposed of in accordance to the manufacturer's instructions. 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 1.8.15 Materials and equipment necessary for spill clean up will be kept in the temporary material storage trailer on-site. Equipment will i include,but not be limited to, brooms,dust pans,mops,rags, gloves, goggles,kitty litter, sand, saw dust, and plastic and metal trash containers. 1.8.16 Spray guns will.be cleaned on a removable tarp. 1.8.17 All spills will be cleaned up upon discovery. Spills large enough to reach the storm water treatment system will be reported to the engineer, environmental monitor,North Andover Conservation Commission and the Nation Response Center at(800)424-8802. 1.8.18 Concrete trucks will not be allowed to wash out or discharge surplus concrete or drum wash water on the site. 1.8.19 Form release oil used for building foundations will be applied over a pallet covered with an absorbent material to collect excess fluid. The absorbent material will be replaced and disposed of properly when saturated. 1.8.20 When testing/cleaning water supply lines,the discharge from the tested pipe(s)will be collected and conveyed to a completed section of the storm sewer for discharge into the sedimentation basin. 1.9 Coordination of BMPs with Construction Activities Structural BMPs will be coordinated with construction activities so the BMP is in place before construction begins. The following BMPs will be coordinated with construction activities; 1.9.1 The temporary perimeter controls(siltsoxx)will.be installed before any clearing and grading begins. 1.9.2 Clearing and grading will not occur in an area until it is necessary for construction to proceed. 1.9.3 The stabilized construction site entrance and sedimentation basins will be constructed before clearing and grading begins. 1.9.4 Once construction activity ceases permanently in an area,that area will be stabilized with permanent seed and mulch. 1.9.5 After the entire site is stabilized,the accumulated sediment will be removed from the sediment basins or other structural BMPs. 1.9.6 The temporary perimeter controls (silt fence and hay bales)will not be removed until all construction activities at the site are complete and soils have been stabilized. 2.0 CERTIFICATION OF COMPLIANCE WITH FEDERAL,STATE AND LOCAL REGULATIONS This Operation and Maintenance Plan reflects the stone water management requirements of the Town of North.Andover and the Commonwealth of Massachusetts, as well as the 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date:April 10,2017 requirements of the US EPA's National Pollutant Discharge Elimination System(NPDES) pen-nit. There are no other applicable State or Federal requirements for sediment and erosion site plans(or permits)or storm water management site plans(or permits). 3.0 INSPECTION AND MAINTENANCE OF STORMWATER MANAGEMENT CONTROLS: Visual inspections of cleared and graded areas should be performed weekly.(silt fence/hay bale barriers should be inspected daily by the General Contractor) and within 12 hours of a rainfall event of 0.5 inches or greater. The inspection will be conducted by the Erosion Control monitor. The inspection will,at a minimum,verify that the structural BMPS listed in Table 3 of this plan are in good condition and minimizing erosion. Any entrapped silt shall be removed to an area outside of the buffer zone and wetland.resource areas; silt fence and hay bales shall be replaced as necessary. The inspection will also verify that the procedures used to prevent stonn water contamination from construction materials and petroleum products are effective. The maintenance inspection report will be made after each inspection. A copy of the report form to be completed by the Erosion Control Monitor is provided in Appendix A of this Operations and Maintenance Plan. Completed forms will be maintained on-site during the entire construction project. Copies of the forms will be sent weekly to the environmental monitor, design engineer, and North Andover Conservation Commission. Following construction,the completed forms will be retained at the general contractor's office for a minimum of one year. r If construction activities or design modifications are made to the site plan which could impact storm water,this plan will be amended appropriately. The amended,plan will have a description of the new activities that contribute to the increased pollutant loading and the planned source control activities. 3.1 Construction Phase 3.1.1 Erosion Control shall be inspected and maintained/reinforced on a daily basis during construction. 3.1.2 Built up sediment will be removed from behind silt fence when it has reached one-third the height of the fence. 3.1.3 Silt fences will be inspected for depth of sediment, for tears,to see if the fabric is securely attached to the fence posts, and to see that fence posts are securely in the ground. 3.1.4 All exposed soil finish surfaces shall be immediately landscaped and stabilized; or loamed, seeded and mulched with a layer of mulch hay. Outside of the growing season,surfaces shall be covered with a layer of mulch hay until climate conditions allow for seeding. 3.1.5 Immediately upon installation of any catch basin or storm drain, erosion control devices shall be set and staked around the inlet to prevent sediment from entering the drainage system prior to paving. I 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 3.1.6 All stockpile areas are to be covered, and should have a double row of haybales stared at the base. 3.1.7 During constriction, all drainage structures shall be cleaned on an as needed basis and/or after heavy rainfalls. Prior to the placement of any impervious materials on site, all drainage structures shall be properly installed and functional. 3.1..8 During construction(after paving)street sweeping shall be performed on a monthly basis to remove sediment before it enters the catch basins and drainage swales. 3.1.9 Temporary and permanent seeding will be inspected for bare spots, washouts, and healthy growth. inspection will entail viewing the bottom of the chambers through the monitoring ports to determine if the units are draining properly. Water should not be standing in the chambers 72 hours after a storm. If standing water is noted the North Andover Conservation Commission should be notified. 3.1.10 Snow Removal and Storage All snow from impervious surfaces shall be plowed to adjacent vegetated pervious surfaces to melt and recharge into the ground or run off into the stormwater system for treatment. If snow piles on site become too large to accommodate additional plowed snow they should be removed from the site; snow shall never be plowed onto adjacent properties or into adjacent resource areas. 3.1.11 De-Icing and Sanding De-icing compounds shall be used sparingly and only in areas required for the safety of the public. Sanding of the driveways and walks should also be kept to a minimum.; if sanding is required the best management practices listed in this plan should be inspected immediately after the winter and,if needed, accumulated sediment from sanding shall be removed. 4.0 ILLICIT DISCHARGES I Recording of this Instrument constitutes agreement by the Owner and Operator of the facility that no stormwater discharges other than those outlined on this plan are allowed for this site. I i i t I i Appendix A Inspection Logs i I i i 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10, 2017 Inspection and Maintenance Report Form To be completed every 7 days and within 24 hours of a rainfall event of 0.5 inches or more. Inspector: Date: Inspector's Qualifications: Days since last rainfall: days Amount of last rainfall: in. Stabilization Measures Date Since _ Drainage Date{ot'Next Stabilized S�t�.bilized Last Condition area. Disturbance Distarban7ce: ,(Ye5/N.o) With P-2 --....__._...-_----- __._..._..-__..........._.__..___------- __— P-3 P-4 i P-5 I P-6 Stabilization required: i I To be performed by: On or before: 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 Inspection and Maintenance Report Form Sediment ForebayBasin Depth of Sediment in ! Any Evidence of Svvirles I Condi.tlon of Shale Overtappuig of the Condition of Ontfall 1 Side Sloped IG+mNinkmeat from 9w ides (i fiches} i Maintenance required for sediment forebay/basin: To be performed by: On or before: Stabilized Construction Entrance{Area ): �Il'Fraffic use __ __._.__ ._..._.....W,......_...w._. i.oesMuclaSedtmebt _�_.._.. _.,. ..__._...� . _._.._.u.._..n..�. ._...___ Is the CuIertBeneath E Get Tracked on to Is Gravel Clean or ' the Stabilized rn1l of Sediment? Entrance-to, the Entrance Leave tbe. Road? site? 'working? I � ii j Maintenance required for stabilized construction entrance(Area ); To be performed by: On or before: i 1975 Salem Street. North Andover Mass. Pollution Prevention and i Operations and Maintenance Plan Construction Phase Date:April 10,2017 Inspection and Maintenance Report Form Perimeter Controls: Date: Siltsoxx Ras.slit Reached lI --- is Fence Is There If a ProblemDrainage Depth of is Found:,. of Fence. Properly Fvzdence of rea Silt:? Mist Nearest Height? Secured? (overtopping? F:kag No.(YesIN,a) , I P-2 P-3 P-4 P-5 P-6 Maintenance required for silt fence and hay bales: To be performed by: On or before: 1975 Salem Street,North Andover Mass, Pollution Prevention and Operations and Maintenance Plan- Post Construction Phase Date: dune 14,2017 OWNERSHIP AND RESPONSIBILITY 1.1 Stormwater Management Sy stem Owners: The owners of the land(Livingstone Development, and any successors) on which the stormwater management systems are located shall be the owners of the systems. 1.2 Parties Responsible for Operation and Maintenance: The owners of the lots shall be responsible for the maintenance of stormwater systems on their properties. The owners of Lots 1 and 2 will share the responsibility of the infiltration systems in the common driveway portion of their property. STORMWATER MANAGEMENT CONTROLS The purpose of this section is to identify the types of best management practices (BMPs) 1.3 Permanent Erosion Control Practices A list of best management practices (BMPs)is included as Table 3; a number of the BMPs listed have been developed to serve as post-construction stone water controls. Table 1 BEST MANAGEMENT PRACTICE MAINTENANCE � 51 ]DRAINAGE TYPE._.._. � MAINTFNANC.`E MAT*Ix Grm-ENT AREAS 1 I P1tA.0 rICE I 1 i Driveway Inspect each spring and remove surface debris.Replace stone infiltration areas Lots 1,2,3 Permanent as needed r — -Inspect through inspection ports each spring.If not standing water � III Infiltration Lots t,2 3 Permanent system is functioning. chambers If sediment has accumulated flush chambers and remove water with a vacuum truck — inspect two tines per ear.In late fall and spring.Remove leaves Detention pond Lot 2 permanent p p y p g' —� - and sediment f 1 1975 Salem Street,North Andover Mass. Pollution Prevention and Operations and Maintenance Plan-Post Construction Phase Date: June 14,2017 t 2.0 CERTIFICATION OF COMPLIANCE WITH FEDERAL, STATE AND LOCAL REGULATIONS This Operation and Maintenance Plan reflects the storm water management requirements of the Town of North Andover and the Commonwealth of Massachusetts, as well as the requirements of the US EPA's National Pollutant Discharge Elimination System (NPDES)permit. There are no other applicable State or Federal requirements for sediment and erosion site plans (or pen-nits) or storm water management site plans(or permits). 3.0 INSPECTION AND MAINTENANCE OF STORMWATER MANAGEMENT CONTROLS: 3.1 Post-Construction: The following maintenance schedule for stormwater controls shall be established in accordance with Table 1 of this plan. 3.1.1 Infiltration Chambers Infiltration Chambers should be inspected annually. The inspection will entail viewing the bottom of the chambers through the monitoring ports to determine if the units are draining properly. Water should not be standing in the chambers 72 hours after a storm. If standing water is rioted the North Andover Conservation Commission should be notified. 3.1.2 Driveway Infiltration Trench Remove sediment twice per year. Replace stone as necessary 3.1.5 Snow Removal and Storage All snow from impervious surfaces shall be plowed to adjacent vegetated pervious surfaces to melt and recharge into the ground or run off into the stormwater system for treatment, If snow piles on site become too large to j accommodate additional plowed snow they should be removed from the site; snow shall never be plowed onto adjacent properties or into adjacent resource areas. 3.1.6 De-leing and Sanding De-icing compounds shall be used sparingly and only in areas required for the safety of the public. Sanding of the driveways and walks should also be kept to a minimum; if sanding is required the best management practices listed in this plan should be inspected immediately after the winter 1975 Salem Street,North Andover Mass. Pollution Prevention and Operations and Maintenance Plan-Post Construction Phase Date: June 14,2017 ' and,if needed, accumulated sediment from sanding shall'be removed. 3.2 Estimated Operations and Maintenance Budget Any opinions of probable project cost or probable construction cost provided by Christiansen& Sergi, Inc. are made on the basis of information available to Christiansen& Sergi, Inc and on the basis of Christiansen& Sergi, Inc's experience and qualifications, and represents its judgment as an experienced and qualified professional engineer.However, since Christiansen& Sergi, Inc has no control over the cost of labor,materials, equipment or services furnished by others, or over the contractor(s')methods of determining prices, or over competitive bidding or market conditions, Christiansen&Sergi, Inc does not guarantee that proposals,bids or actual project or construction cost will not vary from opinions of probable cost Christiansen& Sergi, Inc prepares. 3.2.4 Driveway infiltration areas 3.2.4.1 Engineer 4 hr @$150/hr. (1 time/yr.) Subtotal- $600 Total Annual Estimated Operating Budget: $600 4.0 ILLICIT DISCHARGES Recording of this Instrument constitutes agreement by the Owner and Operator of the facility that no stormwater discharges other than those outlined on this plan are allowed for this site. i CS1CHRISTIANSEN & SERGI, INC PROFESSIONAL ENGINEERS AND LAND SURVEYORS 160 SUMMER STREET, HAVERHILL,MA 01830 tel:978-373-0310 www.csi-engr.com fax 978-372-3960 June 14,2017 Rebecca Oldham,Staff Planner Town of North Andover Planning Department 120 Main Street North Andover MA 01845 RE: Land Disturbance Permit Application 1975 Salem Street Response to Peer review Dear Ms.Oldham: TEC has done a thorough review of the Land Disturbance and Stormwater application. However, it is important to keep certain facts in mind when considering the comments: 1.Mass Stormwater regulations do not apply to developments of four or fewer lots 2.Mass BMP guidelines are not standards or regulations 3.The BMP guidelines are full of errors and conflicting information 4,On of the last sections of the Mass Erosion Control and Sedimentation Guidelines (referred to by TEC) addresses single lot development and small projects and offers only general advice without any design guidelines standards or regulations, (see attached) The proposed project, development of three lots, has been designed with stormwater peak mitigation controls and infiltration with the use of a common driveway to minimize impervious surfaces, however it is not an LID project in the usual application of that term. LID most usually refers to the use of soft rather than hard infrastructure to develop a subdivision or a large commercial site. In an LID project curbing and catch basins may be eliminated in favor grass swales and large detention ponds at the end of drainage systems replaced with decentralized smaller basins, infiltration basins and rain gardens. Sidewalks are minimized or eliminated and roadway pavement widths reduced to minimize impervious surfaces. In this project there aren't any sidewalks,curbing or catch basins to eliminate because such construction is not necessary in a single lot development.Thus,the section of the Regulations that reference LID don't apply to a project such as this although components of LID principles are included in the design. The responses to TEC review letter are below in the numerical order in which they were made. 1.We had filed for a common driveway in addition to the Frontage exception lot and access not through the lot frontage 2. The project was reviewed by the Conservation Commission and an Order of Conditions issued by the Commission approving the project. 3.The plans as submitted comply with Sections 7,1 and 7.2 of the North Andover Stormwater Management and Erosion Control regulations.Additional summaries, descriptions and modifications as requested by the TEC have been added in the attached plans and reports to supplement the original filing. 4.This project had been before both the Conservation Commission and the Planning Board for many months and several public hearings were held. Both the Commission and the Board approved the project for the permits requested.The project was described to the Board on numerous occasions including a description of stormwater controls. Not including the project description in this application was an oversight and a description is contained with the submitted information. 5. The entire parcel consists of three lots and the area of each is on the plan.The entire parcel area of 331,307 s.f. has been added to Sheetl.The drainage areas are listed on the drainage plans and the area for each drainage area is listed in the HydroCAD report. I have added the areas to the Drainage Plan to assist the reviewer.We had previously reviewed the total disturbance for a number of alternative designs suggested by the Board. Of those this project offered the least disturbance of the alternatives investigated.The total disturbance has been added to sheet 2. 6.The proposed drive easement was labeled on sheet 2 of 4. A label has been added to sheet 1.The note has been corrected. 7.The lot labels are on sheet 1(see attached) 8.The driveway(actually a roadway)was shown on sheet 2. 9. 1 have added a sheet which contains the required slope information. 10.The only wetland resource area on site is a small isolated wetland/vernal pool in the extreme southerly corner of lot 3 as shown on sheet 1.The site lies within the buffer zone of a wetland to the west, a wetland to the east across Salem Street and an isolated wetland along the northerly property line. The portion of the site that borders Salem Street lies within the Riverfront area.All resource areas were identified on the submitted plans. 11.A vernal pool is shown on sheet 1.The parcel is in both priority and estimated habitat area.The proposed work was determined by the NHESP to be a "no take". (see attached letter from Fisheries and Wildlife) 12.The property is fully wooded so that a tree line cannot be shown on the plan.The limit of work labeled on the plan is the proposed tree line. 13.There aren't any septic systems within 100 ft of the property 14.The flow paths have been added to the plans 15.The sol is listed as a Canton.The NRCS data is attached as well as the onsite soil testing results that showed the parent soil to be a loamy sand. Groundwater was not observed. Percolation rates ranged from 1 to 9 min/inch. 16,The information requested is contained within the HydroCAD report. 17.The Locus map has been changed from 400 to 800 scale. 18.The reference by the consultant to section 7.2A Low Impact Design is somewhat misplaced.Typically LI D design refers to subdivision design that varies from traditional design in that pavement width are minimized, swales are used rather than hard piping and stormwater is treated throughout the site rather than at one device to which all drainage is directed.Additionally,the Massachusetts Stormwater Handbook does not contain requirements but rather"Guidance" as specified in 7.2Ab)of the North Andover Stormwater Management regulations. The project, a three lot development meets the requirements of the Massachusetts Stormwater Regulations in that it is only a three lot project and the regulations do not apply to a three lot project. The project utilizes a common drive to minimize pavement,super elevated drives to direct water to stone shoulders and infiltration chambers to recharge to ground water and to reduce peak flows rates. The use of these design components proves the project to be an LID project and one that meets the guidelines of the Massachusetts Stormwater Handbook. 19. Revised drainage calculations are included as requested 20.The summaries are included in the HydroCAD report for each drainage area.As required by c)the post-development peak rates were shown to be less than the pre-development peals rates.As required by item f)the total volume of discharge as well as peak rates were evaluated at each control point. 21, 1 have included larger drawings of pre and post development drainage plans. 22.The HydroCAD files have been separated as requested and are included with this submittal. 23.The 50 ft sheet flow was used in all but two areas. In area P-3A sheet flow was used for 100 feet because it is sheet flow from a driveway and shallow concentrated flow was no appropriate for such a small distance.The distance used in P-162 was 72 feet and only a minor difference both have been changed to reflect the 50 ft sheet flow 24,The total impervious pavement on the site is 12,200 square feet.The soil is a Canton which is in the B hydrologic group. Required recharge is.35 inches per square foot of impervious area.Total volume of recharge required is 12,200 s.f,x.35 inches/s.f./12 inches/ft=355 c.f. The chambers volume plus the void volume of the stone on lot 3 is 658 c.f.The chamber volume plus the stone void volume on the common driveway is 5423 c.f. Total volume provided 6081 c.f. >355 c.f. requires, The above does not include the infiltration provided by the system design. 25.The driveways in the areas of the infiltration chambers have a 5 foot wide shoulder of crushed stone that drains into the Stormtech chambers.The stone provides the pretreatment to the stormwater before it enters the chambers.The filter stone in the 5 foot shoulder is not included in the storage stone used in the above calculations. Infiltration provides, by BMP guidelines,80% removal of TSS. Considering the application of the design system to a driveway it is more than sufficient to meet State regulations(which don't apply to projects of four lots or fewer) and more than sufficient to meet the BMP Guidelines. 26.We have added a landscape plan to the design drawings. The majority of the site will remain wooded.The disturbed riverfront area along the drives will be allowed to revegetate to forest.The remainder of the cleared land will be lawn and ornamental planting beds common to new homes in North Andover.Specifics as to the type of grasses, mulch and ornamentals to be placed on each lot will be up to the new home owner or contractor who will build the homes. 27.An erosion and sedimentation control plan has been added to the plan set 28.A silt sack was included in the detail sheet and it designated use is in the single catch basin shown on the plan. 29.The note has been corrected. 30.A legend has been provided 31.The only drainage area increase in peak is to an area within the site.There isn't any requirement within the rules prohibiting increases in flow or rates on one's own properties.There isn't any need to revise the plans as the peer reviewer has requested. 32.The 0&M plan will be signed by the applicant as required by 9.1a)ii prior to start of construction and with the posting of the bond.The information as required by 9.1a)1v has been provided. Information required by 9.1a)v is included in the submittal.Separate Stormwater easements are not required.The common driveway easement will include the stormwater system in that area. It will be recorded with the plan. 33.An 0&M plan is included) 34.All buffers are on the plan and the 200 ft riverfront line type has been changed 35.The Conservation Commission has since determined the potential vernal pool is not a vernal pool but rather an isolated wetland.The septic system as shown is greater than 100 ft from the wetland. 36. a.The riprap detail is on sheet 4 b.the leach chambers are on sheet 3 c.details of the septic systems and septic tanks are not need to review this stormwater plan. d.The location of the wells are on the plans. Details are not needed e. Underground utility details are not necessary f.A detention pond detail has been included g.A note has been added to the landscape plan concerning loam and seed. h. Roof drains are not being used. 1.There isn't any need to restrict a temporary stockpile to 2:1. It is not realistic to expect such a requirement to be followed. j.There aren't any standards for construction exits developed by Mass DEP,there are only guidelines. The Construction entrance/exit detail is one we have used for 30 years and has proved to be effective. It is far wider than the state recommends which I consider to be better than the state recommendation. The detail will not be changed. Very truly yours Philip G. Christiansen P.E. 320 Soil f>ioengineeririg Notes: Table prepared by R. DeVergilio,Natural Resources Conservation Service, Amherst MA.Adapted from NRCS data base`Plants For BioEngineering, Uses, H.W.Everett, 11/95'.Native plant review by the Massachusetts Native Plant Advisory Committee. apecial mote...... `Streamco' and `Bankers' are not native to Massachusetts. It is recommended they only be used in combination with native species. 1/Plant Material Types: `All'includes Dormant li ascines,Stakes,Brush Mattresses, Layering, and Cuttings as well as Rooted Cuttings and Plants. 2/Western Mass. includes Berkshire,Frankl'[n,Hampshire,and Hampden Counties, 3/Tree species,such as cottonwood, poplar and black willow, are recommended for riparian area plantings and are not recommended for establishment upon the streambank itself due to potential for windthrow at maturity, and subsequent damage to the streambank. 4/ Viburnum opulus is similar to V.trilobum and is often confused with it. V opulus is introduced to Massachusetts. Streambank Zones: Lower is at or near the normal waterline to the upper limit of saturation due to capillary action. Mid is the surface area above the upper limit of the lower zone to about 3 feet from the top of bank. Upper is the surface area about 3 feet from the top of bank and extending into the riparian zone. Erasion and ediment' ontr€l Best .Management r ctices or. n lvi ual d esites and Small Parcels Construction on small developments can cause large amounts of sediment to be transported to receiving waters.The following are some of the damaging activities and conditions that may occur during development: Exposed and unprotected soil is often left throughout the development.When runoff occurs,sediment is transported into the nearest stormwater facility or stream, eventually clogging it. Vehicles and heavy equipment track soil from the development onto the street. Gullies formed by tire tracks become channels for runoff flow. Vegetation bordering streams or lakes is often removed during construction.This increases the water temperature by removing shade.An increase in water temperature can contribute to algae blooms and may change the species composition of the lake or stream. Because the vegetation has been removed,there is no barrier to prevent sediment from entering the stream. This can clog spawning grounds and fish gills. i BMPs for Homesites and Small Paweis 32f These problems may occur during work performed by subcontractors who are on-site for a very short time. Cooperation and communication between developers, builders,and subcontractors are essential to minimize erosion and damage to the environment. Clearing and Grading Plan.and implement proper clearing and grading of the site. It is important to clear Only the areas needed, thus keeping exposed areas to a minimum.Phase the clearing so that only those areas that are actively being worked are uncovered. Clearing limits should be flagged prior to All the start of clearing work. Excavated Basement Soil Locate excavated basement soil a reasonable distance behind the curb, such as in the backyard or side yard area.This will increase the distance eroded soil must travel to reach the storm sewer system.Soil piles should be covered until the soil is either used or removed.Piles should be situated so that sediment does not run into the street or adjoining yards. Backfilling Backfill basement walls as soon as possible and rough grade the IoL This will eliminate large soil mounds which are highly erodible and prepares the lot for temporary cover which will further reduce erosion potential. Removal of Excess Soil Remove excess soil from the site as soon as possible after backfilling.This will eliminate any sediment loss from surplus fill. Management Of Soil Banks If a lot has a soil bank higher than the curb,a trench or berm should be installed moving the bank several feet behind the curb.This will reduce the occurrence of gully and rill erosion while providing a storage and settling area for stormwater. BMPs for Hoiiiesites aiid Smell Nrcels 322 Construction Road Access Apply gravel or crushed rock to the driveway area and restrict truck traffic to this one route.Driveway paving can be installed directly over the gravel.This measure will eliminate soil from adhering to tires and stops soil from washing into the street.This measure requires periodic inspection and maintenance including washing,top-dressing with additional stone, reworking and compaction. Soil Stabilization Stabilize denuded areas of the site by mulching, seeding, planting,or sodding. Street Cleaning Provide for periodic street cleaning to remove any sediment that may have been tracked out. Sediment should be removed by shovelling or sweeping and carefully removed to a suitable disposal area where it will not be re-eroded. References Lobdell, Raymond,A Guide to Develop_fng and Re-Developing Shoreland Property in New Hare pshire,North Country Resource Conservation and Development Area,Inc.,Meredith,NH, 1994. Minnesota Pollution Control Agency,Division of Water Quality,Protectin Water Qualfly in Urban Areas,Best Manag�ejnent Practices fol- Minnesota, MN, October, 1989. Washington State Department of Ecology, toi-inwater Management Manual for the Puget Sognd Basin, Olympia,WA, February, 1992, Erosion and Sediment Control Best Management Practices for Sand and Gravel its Erosion from sand and gravel pits can contribute a large amount of sediment to adjacent water courses. Sand and gravel also provides a very porous medium for transporting soluble pollutants to the underlying groundwater. Many sand and gravel operations are located within or near the recharge area of public and private wells. A major threat to groundwater exists when excavation,activities take place in these areas. Exposure of the saturated zone in recharge areas can leave groundwater resources vulnerable to contamination because it decreases filtering.An added problem is that abandoned excavation pits have been used for the unregulated disposal of solid and liquid wastes and salt-laden snow. DIVISION OF FISHERIES &WIL LIF 1 Rabbit HH1 Road,Westborough,MA 01581 p-,(508)389,6300( f:(508)389 7890 srn�s MASS.GOV/M Ft SSW I LID LIFE M A S S W ILD Li FE Jack Buckley,Director October 25,2016 Thomas Hodgson Livingstone Development Corp. PO Box 50 Tewksbury MA 01876 North Andover Conservation Commission 1600Osgood Street Building 20 Suite 2-36 North Andover MA 01845 RE: Applicant: Thomas Hodgson Project Location: Lots 1-3 Salem Street Project Description: Two(2)Driveways,Infiltration Trench,Grading and Utilities for the Construction of Three(3)Single Family Homes DEP Wetlands File No.: 242-1689 NHESP File No.: 16-36091 Dear Commissioners&Applicant: The Natural Heritage & Endangered Species Program of the Massachusetts Division of Fisheries & Wildlife (the "Division") received a Notice of Intent with site plans (dated October S, 2016) in compliance with the rare wildlife species section of the Massachusetts Wetlands Protection Act Regulations (310 CMR 10.59). The Division also received the MESA Review Checklist and supporting documentation for review pursuant to the MA Endangered Species Act Regulations(321 CMR 10.18), WETLANDS PROTECTION ACT(WPA� Based on a review of the information that was provided and the information that is currently contained in our database,the Division has determined that this project, as currently proposed, will not adversely affect the actual Resource Area Habitat of state-protected rare wildlife species. Therefore, it is our opinion that this project meets the state-listed species performance standard for the issuance of an Order of Conditions. Please note that this determination addresses only the matter of rare wildlife habitat and does not pertain to other wildlife habitat issues that may be pertinent to the proposed project. MASSACHUSETTs ENDANGERED SPECIES ACT(I\AESAj Based on a review of the information that was provided and the information that is currently contained in our database,the Division has determined that this project, as currently proposed,will not result in a prohibited Take of state-listed rare species. This determination is a final decision of the Division of Fisheries and Wildlife pursuant to 321 CMR 10.18. Any changes to the proposed project or any MASSWILDLIFE | | \ ' NHE8PNo.16-36O91 Page \ � additional work beyond that shown on the site plans may require an additional filing with the Division � pursuant tn the MESA. This project may be subject tu further review ifno physical work iscommenced � within five years from the date of issuance of this determination,or if there is a change to the project. � Please note that this determination addresses only the matter of state-listed species and their habitats, � if you have any questions regarding this |m11or please contact Daisy Kqedeirns, Endangered Species | Review Assistant,ot(5UO)389-63S7. � i Sincerely, ! i ° . � Thomas Vk French, Ph.D. Assistant Director ' u: L0bLaChape|le � StevenEdkan, Norse Environmental Services, Inc, � K4AD[P Northeast Region � / ! |` ' / ! | | M/\SSWILDLKFE / i Project Description—Three Lot Development—1975 Salem.Street The project consists of development of 3 building lots on 331,307 s.f. of land. One lot meets the requirements of the zoning district and two are frontage exception lots. The two frontage exception.lots will be accessed by a common driveway. The third lot will have its own driveway. See Sheet 1 of the submitted plans for lot areas and frontages. The project lies in the buffer zone of wetlands and within the riverfront area of Boston Brook.All disturbed areas within the Boston Brook riverfront area outside of the driveways and shoulders will be allowed to return to their natural vegetative state as designated on sheet 6. Stormwater runoff will be controlled by a small detention pond and infiltration basins at the end of each driveway and in the case of the common driveway along its length. See sheet 3 for the overall layout and sheets 3 and for an overall view of the property and construction details as well as driveway profiles. The homes will be served by individual private wells and septic systems. Soil testing has already been performed and the soils found to be suitable for septic systems. The individual lot owners will be responsible for maintaining the stonnwater systems on their lots while those systems servicing the common driveway will be maintained by a homeowners association of the two property owners. i 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 1.0 OWNERSHIP AND RESPONSIBILITY 1.1 Stormwater Management System Owners; The owners of the land(Livingstone Development Corp., and any successors) on which the stormwater management systems are located shall be the owners of the systems. 1.2 Parties Responsible for Operation and Maintenance: The general contractor of the project shall be responsible for the operation and maintenance of the stormwater management systems during construction. 2.0 IDENTIFICATION OF POTENTIAL STORMWATER POLLUTANTS The purpose of this section is to identify pollutants that could impact storm water during the construction of this project. 1.3 Significant Material Inventory Pollutants that result from clearing, grading, excavation and building materials that have the potential to be present in storm water runoff are listed in Table 1. This table includes information regarding material type, chemical and physical description and the specific regulated storm water pollutants associated with each material. 1.4 Potential Areas for Storm Water Contamination The following potential source areas of storm water contamination were identified and evaluated: • Cleared and graded areas; • driveway construction; • Building construction; m Construction site entrance; No Tree removal areas; All undisturbed areas. I975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 1U,2Ol7 Table Potential Construction Site Storm Water Pollutants | \ Pesticides(inseeticides, Chlorinated hydrocarbons, Various colored to colorless fungicides,herbicides, organophosphates,carbarnates, or grains '-_-_-__- . Fertilizer _J " Calcium sulphate,calcium carbonate, Plaster White granules of powder I i sulfuric acid Cleaning Solvents Colorless,blue or yellow-green- chloride,trichloroothylene, liquids petroleurn distillates Bituminous Asphalt Black,,lid _qis mates Concrete White solid Glue,adhesives h��or yellow id Metal oxides,Stoddard solve t,tale, Paints Various colored liquid 1 11 1 J carbonate,arsenic I Wastewater from construction Water Soil,oil and grease,solids equipment washi / � / / ' Wood preservatives Clear,amber m dark brown liquid Stoddard solvent,petroleum � Brown or omvoxD^un�vm � Hydraulic" "=""=" Mineral oil hydrocarbon vumuov | petroleumColorless,pale brown or pink Benzene,ethyl benzene,toluene, hydrocarbon- Petroleum uoouuuwvummx="�. � Diesel Fuel | �,� "�"�^=" ox,'°"�liquid � b Kerosene ' Pale yellow liquid petroleum | Coal vi\n�n|cuudisbl]a*� \ � ���-�___�______'J | Ethylene � | Clv�a�muyuum,/�"� | glycol,^-~'-'~ � ` | / / _____- ) 0 Data obtained froinM8DSa when available, ! Table 2premcm1 o�n inf�rozu1 oo vk�oo`�otor Ibroocb ! ~ ~�`~~^ - —=---=' �-----` ��—����� ! vy these areas. i | � � � ' 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10, 2017 Table 2 Locations of Potential Sources of Storm Water Contamination WATZ R DRAINAGE,ARCAS(') POTENTIAL POTENTIAL PROKE MS CONTAMINATION POLLUTANTS POINT Erosion of soils from Soil erosion,fertilizer, cleared and graded areas Cleared and graded areas All pesticides have the potential to discharge into protected resource areas Leaking hydraulic oil and antifreeze from clearing, grading and asphalt application construction equipment. Gasoline and Asphalt,hydraulic oil, driveways and gasoline,antifreeze,soil diesel fuel spills while All fueling construction construction site entrance erosion,fertilizer, equipment,and erosion of pesticides I exposed and stockpiled soils. Asphalt chemicals can be released to storm water if a rain event occurs before curing is complete. Accidental spills of paints and cleaning solvents, Plaster,cleaning solvents, leaking hydraulic oil and antifreeze fromasphalt,concrete,paints, construction equipment, hydraulic oil,gasoline, gasoline and diesel fuel antifreeze,soil erosion, Building construction All fertilizer,pesticides, spills while fueling glue/adhesives,c construction equipment, caning erosion of exposed and compounds,wood stockpiled soils,and preservatives,kerosene degradation of scrap dry wall can potentially contaminate storm water. ...................... Ruts caused by logging Soil erosion,fertilizer, equipment can fill with Tree removal areas All pesticides water,preventing complete re-vegetation, No storm water relate d All undisturbed areas All None issues with completely vegetated areas. 1,5 Suiuniqa of Available Storm Water Sampling Data No Storm water sampling data is available for this site. 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10, 2017 STORMWATER MANAGEMENT CONTROLS The purpose of this section is to identify the types of temporary and permanent erosion and sediment controls that will be used during construction activities. The controls will provide soil stabilization for disturbed areas and structural controls to divert runoff and remove sediment. This section will also address control of other potential storm water pollutant sources such as construction materials (paints, concrete dust, solvents, and plaster),waste disposal, control of vehicle traffic, and sanitary waste disposal. 1,6 TeMporgy and Permanent Erosion Control Practices A list of best management practices (BMPs)is included as Table 3;. 1.7 Site Wide Control Measures To prevent soil from washing into adjacent resource areas the following BMPS will be implemented: 1.7.1 SiltSoxx barriers will be placed along the perimeter of the area to be cleared and graded before any clearing or grading takes place. 1.7.2 Soil stockpiles are to be covered,and surrounded by a double row of hay bales. 1.7.3 A construction entrance will be installed Table 3 BEST MANAGEMENT PRACTICE MAINTENANCE ........... 1 BEST DRAINAGE i YYTE, MAINTENANCE "AGEIVENT Alcu4AS PRACTICC up sediment will be removed from behind siltsoxx fence aristrulti. Built SiW- Phase when it has reached one-third the height of the fence, .............. ........ ................................ The paved street adjacent to the site entrance will be swept daily to remove excess mud,dirt,or rock tracked from the site. Dump trucks bawling material from the construction site are to Stabilized Construction have their payload covered with a tarpaulin. Construction All Phase -The stabilized construction entrance will be inspected for Entrance Phase tracked on the road,for clean gravel,and to make sure that the culvert beneath the entrance is working and that all traffic use the stabilized entrance when leaving the site. ............. ........... ------------ ........... 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10, 2017 1.8 Construction Practices to Minimize Storm Water Contamination All waste materials will be collected and stored in a securely lidded metal dumpster rented through a reputable, licensed solid waste management company. The dumpster is to be located outside the buffer zone to resource areas on site. All trash and construction debris from the site will be deposited in the dumpster. The dumpster will be emptied a minimum of twice per week and the trash disposed of in accordance to all local, state and federal regulations. All personnel will be instructed regarding the correct procedure for waste disposal. All sanitary waste will be collected from the portable units a minimum of three times per week by a licensed sanitary waste management contractor. Good housekeeping and spill control practices will be followed during construction to minimize storm water contamination from petroleum products,fertilizers,paints and concrete. Good housekeeping practices are listed below: 1.8.1 A stabilized construction entrance will be constructed at the curb cuts in Salem Street to reduce vehicle tracking of sediments. 1.8.2 The paved street adjacent to the site entrance will be swept as needed to remove excess mud, dirt, or rock tracked from the site. 1.8.3 Dump trucks hauling material from the construction site are to have their payload covered with a tarpaulin. 1.8A All ruts caused by equipment used for cutting and removing of trees will be graded and re-vegetated. 1.8.5 Fertilizers will be applied only in the minimum amounts recommended by the manufacturer. 1.8.6 Fertilizers will be worked into the soil to limit exposure to storm. water. 1.8.7 Fertilizers will be stored in a covered shed and partially used bags will be transferred to a scalable bin to avoid spills. 1.8.8 All vehicles on site will be monitored for leaks and receive regular preventative maintenance to reduce the chance of leakage. 1.8.9 Petroleum products will be stored in tightly sealed containers which are clearly labeled. 1.8.10 Spill kits will be included with all fueling sources and maintenance activities. 1.8.11 Any asphalt substances used on-site will be applied according to the manufacturer's reconirnendation. 1.8.12 Sanitary waste will be collected from portable units a minimum of three tunes a week to avoid overfilling. 1.8.13 A covered dumpster will be used for all waste materials. 1.8.14 All paint containers and curing compounds will be tightly sealed and stored when not in use. Excess paint will not be discharged into the storm sewers, but will be properly disposed of in accordance to the manufacturer's instructions. 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 1.8.15 Materials and equipment necessary for spill clean.up will be kept in the temporary material storage trailer on-site. Equipment will include,but not be limited to, brooms, dust pans,mops,rags, gloves, goggles,kitty litter, sand, saw dust, and plastic and metal trash containers. 1.8.16 Spray guns will.be cleaned on a removable tarp. 1.8.17 All spills will be cleaned up upon discovery. Spills large enough to reach the storm water treatment system will be reported to the engineer, environmental monitor,North Andover Conservation Commission and the Nation Response Center at(800)424-8802. 1.8.18 Concrete trucks will not be allowed to wash out or discharge surplus concrete or drum wash water on the site. 1.8.19 Form release oil used for building foundations will be applied over a pallet covered with an absorbent material to collect excess fluid. The absorbent material will be replaced and disposed of properly when saturated. 1.8.20 When testing/cleaning water supply lines,the discharge from the tested pipe(s) will be collected and conveyed to a completed section of the storm sewer for discharge into the sedimentation basin, 1.9 Coordination of BMPs with Construction Activities Structural BMPs will be coordinated with construction activities so the BMP is in place before construction begins. The following BMPs will be coordinated with construction activities: 1.9.1 The temporary perimeter controls (siltsoxx)will.be installed before any clearing and grading begins. 1.9.2 Clearing and grading will not occur in an area until it is necessary for construction to proceed. L9.3 The stabilized construction site entrance and sedimentation basins will be constructed before clearing and grading begins. 1.9.4 Once construction activity ceases permanently in an area,that area will be stabilized with permanent seed and mulch. 1.9.5 After the entire site is stabilized, the accumulated sediment will be removed from the sediment basins or other structural BMPs. 1.9.6 The temporary perimeter controls (silt fence and hay bales) will not be removed until all construction activities at the site are complete and soils have been stabilized. 2.0 CERTIFICATION OF COMPLIANCE WITH FEDERAL,STATE AND LOCAL REGULATIONS This Operation and Maintenance Plan reflects the storm water management requirements of the Town of North Andover and the Commonwealth of Massachusetts, as well as the 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 requirements of the US EPA's National Pollutant Discharge Elimination System(NPDES) pern-rit. There are no other applicable State or Federal requirements for sediment and erosion site plans (or permits)or storm water management site plans (or permits). 3.0 INSPECTION AND MAINTENANCE OF STORMWATER MANAGEMENT CONTROLS: Visual inspections of cleared and graded areas should be performed weekly.(silt fence/hay bale barriers should be inspected daily by the General Contractor) and within 12 hours of a rainfall event of 0.5 inches or greater. The inspection will be conducted by the Erosion Control monitor, The inspection will,at a minimum, verify that the structural BMPS listed in Table 3 of this plan are in good condition and minimizing erosion. Any entrapped silt shall be removed to an area outside of the buffer zone and wetland resource areas; silt fence and hay bales shall be replaced as necessary. The inspection will also verify that the procedures used to prevent storm water contamination from construction materials and petroleum products are effective. The maintenance inspection report will be made after each inspection. A copy of the report form to be completed by the Erosion Control Monitor is provided in Appendix A of this Operations and Maintenance Plan. Completed forms will be maintained on-site during the entire construction project. Copies of the forms will be sent weekly to the environmental monitor, design engineer,and North Andover Conservation Commission. Following construction,the completed forms will be retained at the general contractor's office for a minimum of one year. If construction activities or design modifications are made to the site plan which could impact storm water,this plan will be amended appropriately. The amended.plan will have a description of the new activities that contribute to the increased pollutant loading and the planned source control activities, 3.1 Construction Phase 3.1.1 Erosion Control shall be inspected and maintained/reinforced on a daily basis during construction, 3.1.2 Built up sediment will be removed from behind silt fence when it has reached one-third the height of the fence, 3.13 Silt fences will be inspected for depth of sediment, for tears,to see if the fabric is securely attached to the fence posts, and to see that fence posts are securely in the ground. 3.1.4 All exposed soil-finish surfaces shall be immediately landscaped and stabilized; or loanied, seeded and mulched with a layer of mulch hay. Outside of the growing season, surfaces shall be covered with a layer of mulch hay until climate conditions allow for seeding. 3.1.5 Immediately upon installation of any catch basin or storm drain, erosion control devices shall be set and staked around the inlet to prevent sediment from entering the drainage system prior to paving. i i I 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date. April 10,2017 3.1.6 All stockpile areas are to be covered, and should have a double row of haybales staked at the base. 3.1.7 During constriction, all drainage structures shall be cleaned on an as needed basis and/or after heavy rainfalls. Prior to the placement of any impervious materials on site, all drainage strictures shall be properly installed and functional. 3.1..8 During construction(after paving) street sweeping shall be performed on a monthly basis to remove sediment before it enters the catch basins and drainage swales. 3.1.9 Temporary and permanent seeding will be inspected for bare spots, washouts, and healthy growth. inspection will entail viewing the bottom of the chambers through the monitoring ports to determine if the units are draining properly. Water should not be standing in the chambers 72 hours after a storm. If standing water is noted the North Andover Conservation Commission should be notified. 3.1.10 Snow Removal and Storage All snow from impervious surfaces shall be plowed to adjacent vegetated pervious surfaces to melt and recharge into the ground or run off into the stormwater system for treatment. If snow piles on site become too large to accommodate additional plowed snow they should be removed from the site; snow shall never be plowed onto adjacent properties or into adjacent resource areas. 3.1.11 De-Icing and Sanding De-icing compounds shall be used sparingly and only in areas required for the safety of the public. Sanding of the driveways and walks should also be kept to a minimum; if sanding is required.the best management practices listed in this plan should be inspected immediately after the winter and, if needed, accumulated sediment from sanding shall be removed. 4.0 ILLICIT DISCHARGES Recording of this Instrument constitutes agreement by the Owner and Operator of the facility that no storrnwater discharges other than those outlined on this plan are allowed for this site. i j r i i Appendix A Inspection Logs I 1975 Salem Street. North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 Inspection and Maintenance Report Form To be completed every 7 days and within 24 hours of a rainfall event of 0.5 inches or more, Inspector: Date: Inspector's Qualifications: Days since last rainfall: days Amount of last rainfall: in, Stabilization Measures . .......... I Date Since Drainage j Date of Next Stabilized SUbitized Last Condition Area 1 1 Disturbance. (Y691NO) With: Disturbance, P- .......... P-2 P--3 P-4 ...............--—--------------------- P-5 P-6 Stabilization required: To be performed by: On or before: 1975 Salem Street. North Andover Mass, Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 Inspection and Maintenance Report Form Sediment Forebay/Basin { Depth of Sediment in r And Evidence of 444 S ieS Condition of Swale i Overtopping of the Condition of Gutfall Side Sloped 1 AnibaulCmeot #rom Swales (incltes� � � (Yes1No} Maintenance required for sediment forebay/basin: To be performed by: On or before: Stabilized Construction Entrance(Area }: _ Does all Traffic use Does Much Sediment �_,. ..._ _.,. �.. Is the Culvert Beneath f Is C'ravel Clean or ' the Stabilized the Entrance Get Tr icW on to Full of Sediment? Enti ance to Leave the Road t Working? Site? i EE ______---._...__...,...._....._......._..__.._.___.__.._.._.__�.............. .._ Maintenance required for stabilized construction entrance(Area ); To be performed by: On or before: i 1975 Salem Street, North Andover Mass. Pollution Prevention and Operations and Maintenance Plan Construction Phase Date: April 10,2017 Inspection and Maintenance Report Form Perimeter Controls: Date: Siltsoxx Reached 1L3 is Fence _ is ThereTf a P ohlenr Drarnage Depth of is)found.; Area. of Fence. Silt? Properly Evidence of List Nearest Height? Seeured? Overtopping? P-2 __..___..-__..._.._.......... _.,,_.,,....,.......____.._.__..._._.._.._.___.._.-.- _...,_......_.._..___._.__. _._.___..-_____._.._._.____. ..._.___................__............ ._ 3 P-3 P-4 P-5 ............ Maintenance required for silt fence and bay bales: To be performed by: On or before: 1975 Salem Street,North Andover Mass. Pollution Prevention and Operations and Maintenance Plan- Post Construction Phase Date: June 14, 2017 OWNERSHIP AND RESPONSIBILITY 1.1 Stormwater Management System Owners: The owners of the land (Livingstone Development, and any successors) on which the stoirnwater management systems are located shall be the owners of the systems. 1.2 Parties Responsible for Operation and Maintenance: The owners of the lots shall be responsible for the maintenance of stormwater systems on their properties. The owners of Lots I and 2 will share the responsibility of the infiltration systems in the cornnion driveway portion of their property. STORMWATER MANAGEMENT CONTROLS The purpose of this section is to identify the types of best management practices (BMPs) 1.3 Permanent Erosion Control Practices A list of best management practices (BMPs)is included as Table 3; a number of the BMPs listed have been developed to serve as post-construction storm water controls. Table I BEST MANAGEMENT PRACTICE MAINTENANCE BEST DRAINAGE TYPE MAINTFNANCE L,NT AREAS PRACTICt ----------- Driveway Inspect each spring and remove surface debris.Replace stone Lots 1,2,3 Permanent infiltration areas as needed ­­inspect through inspection ports each spring.If not standing water Infiltration system is Rinctioning. If sediment has accumulated-flush chambers and remove water with Lots 1,2,3 Permanent chambers a vacuum truck ----------- ---------- Inspect two times per year.In late fall and spring.Remove leaves permanent and sediment Detention pond Lot 2 -----------............. 1975 Salem Street,North Andover Mass. Pollution Prevention and Operations and Maintenance Plan - Post Construction Phase Date: June 14, 2017 2.0 CERTIFICATION OF COMPLIANCE WITH FEDERAL, STATE AND LOCAL REGULATIONS This Operation and Maintenance Plan reflects the storm water management requirements of the Town of North Andover and the Commonwealth of Massachusetts, as well as the requirements of the US EPA's National Pollutant Discharge Elimination System (NPDES)perinit. There are no other applicable State or Federal requirements for sediment and erosion site plans (or permits) or storm water management site plans(or permits). 3.0 INSPECTION AND MAINTENANCE OF STORMNYATER MANAGEMENT CONTROLS: 3.1 Post-Construction: The following maintenance schedule for stormwater controls shall be established in accordance with Table I of this plan. 3.1.1 Infiltration Chambers Infiltration Chambers should be inspected annually. The inspection will entail viewing the bottom of the chambers through the monitoring ports to determine if the units are draining properly. Water should not be standing in the chambers 72 hours after a storm. If standing water is noted the North Andover Conservation Commission should be notified, 3.1.2 Driveway Infiltration Trench Remove sediment twice per year. Replace stone as necessary 3,1.5 Snow Removal and Storage All snow from impervious surfaces shall be plowed to adjacent vegetated pervious surfaces to melt and recharge into the ground or run off into the storinwater system for treatment. If snow piles on site become too large to accommodate additional plowed snow they should be reinoved from the site; snow shall never be plowed onto adjacent properties or into adjacent resource areas. 3.1.6 De-Icing and Sanding De-icing coinpounds shall be used sparingly and only in areas required for the safety of the public. Sanding of the driveways and walks should also be kept to a minimum; if sanding is required the best management practices listed in this plan should be inspected inimediately after the winter 1975 Salem Street, North Andover Mass. Pollution Prevention and Operations and Maintenance Plan - Post Construction Phase Date: June 14,2017 and,if needed, accumulated sediment from sanding shall be removed, 3.2 Estimated Operations and Maintenance Budge Any opinions of probable project cost or probable construction cost provided by Christiansen & Sergi, Inc. are made on the basis of information available to Christiansen & Sergi, Inc and on the basis of Christiansen& Sergi, Inc's experience and qualifications, and represents its judgment as an experienced and qualified professional engineer. However, since Christiansen& Sergi,Inc has no control over the cost of labor, materials, equipment or services furnished by others, or over the contractor(s')methods of determining prices, or over competitive bidding or market conditions, Christiansen&Sergi, Inc does not guarantee that proposals,bids or actual project or construction cost will not vary from opinions of probable cost Christiansen& Sergi, hic prepares, 3.2.4 Driveway infiltration areas 3.2,4.1 Engineer 4 hr @$1 5 0/br. (I time/yr.) Subtotal - $600 Total Annual Estimated Operating Budget: $600 4.0 ILLICIT DISCHARGES Recording of this Instrument constitutes agreement by the Owner and Operator of the facility that no stornawater discharges other than those outlined on this plan are allowed for this site. Soil Map—Essex County,Massachusetts, Northern Part 3 331480 331550 331620 331690 331760 331830 331900 331970 332040 332110 332180 42°38'23"N I I, ...k. 42°38'23"N r o o � m � N N f t n O N N N , {S tl r 1 f O N N � � s N i v i f {'VA � N N ' • j � ti a e t , ! o° 5. a O O F N V N � a 42°38'8"N I] 42°38'8"N 331480 331550 331620 331690 331760 331330 331900 331970 332040 332110 332180 3 Map Scale:1:3,320 if printed on A landscape(11"x 8.5")sheet. N Meters 0 45 90 180 270 Feet 0 150 300 600 900 Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 19N WGS84 I Sl)/e Natural Resources Web Soil Survey 5/31/2016 Conservation Service National Cooperative Soil Survey Page 1 of 3 Soil Map—Essex County,Massachusetts,Northern Part MAP LEGEND MAP INFORMATION Area of Interest(AOI) Spoil Area The soil surveys that comprise your AOI were mapped at 1:15,800. Area of Interest(AOI) Stony Spot Soils Warning:Soil Map may not be valid at this scale. " Very Stony Spot Soil Map Unit Polygons Enlargement of maps beyond the scale of mapping can cause Wet Spot misunderstanding of the detail of mapping and accuracy of soil line .;�. Soil Map Unit Lines placement.The maps do not show the small areas of contrasting Other Soil Map Unit Points soils that could have been shown at a more detailed scale. Special Line Features Special Point Features Please rely on the bar scale on each map sheet for map Blowout Water Features measurements. Streams and Canals - Borrow Pit Source of Map: Natural Resources Conservation Service Transportation Web Soil Survey URL: http://websoilsurvey.nres.usda.gov Clay Spot Rails Coordinate System: Web Mercator(EPSG3857) Closed Depression Interstate Highways Maps from the Web Soil Survey are based on the Web Mercator Gravel Pit US Routes projection,which preserves direction and shape but distorts distance and area.A projection that preserves area,such as the Gravelly Spot Major Roads Albers equal-area conic projection,should be used if more accurate Landfill Local Roads calculations of distance or area are required. Lava Flow Background This product is generated from the USDA-NRCS certified data as of the version date(s)listed below. Marsh or swamp Aerial Photography Soil Survey Area: Essex County, Massachusetts,Northern Part Mine or Quarry Survey Area Data: Version 11,Sep 28,2015 Miscellaneous Water Soil map units are labeled(as space allows)for map scales 1:50,000 Perennial Water or larger. Rock Outcrop Date(s)aerial images were photographed: Aug 29,2014—Sep -�_.. Saline Spot 19,2014 Sandy Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background Severely Eroded Spot imagery displayed on these maps.As a result,some minor shifting Sinkhole of map unit boundaries may be evident. Slide or Slip ao Sodic Spot 1,Sr);% Natural Resources Web Soil Survey 5/31/2016 Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map—Essex County,Massachusetts,Northern Part Map Unit Legend Essex County,Massachusetts,Northern Part(MA605) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 1 Water 0.4 1.0% 6A Scarboro mucky fine sandy 3.5 8.4% loam,0 to 3 percent slopes 52A Freetown muck,0 to 1 percent 0.1 0.2% slopes 421 C Canton fine sandy loam,8 to 15 11.4 27.5% percent slopes,very stony 422D Canton fine sandy loam, 15 to 15.4 37.1% 25 percent slopes,extremely stony 711 C Charlton-Rock outcrop-Hollis 10.7 25.8% complex,8 to 15 percent slopes Totals for Area of Interest 41.4 100.0% t SD:t Natural Resources Web Soil Survey 5/3 112 0 1 6 Conservation Service National Cooperative Soil Survey Page 3 of 3 Commonwealth of Massachusetts City/Town of North Andover - Lot 1 Percolation Test Form 12 Percolation test results must be submitted with the Soil Suitability Assessment for On-site Sewage Disposal. DEP has provided this form for use by local Boards of Health. Other forms may be used, but the information must be substantially the same as that provided here. Before using this form, check with the local Board of Health to determine the form they use. Important:When A, Site Information filling out forms on the computer, use only the tab Lois Lachapelle key to move your Owner Name cursor-do not 1975 Salem Street-Map 106 Block 106.B Lot 16 use the return - key. Street Address or Lot# North Andover MA 01845 - - ------------ r� City/Town State Zip Code Contact Person(if different from Owner) Telephone Number ` B. Test Results 6/2/16 11:26 a.m. 612/16 11:43 a.m. Date Time Date Time Observation Hole# Perc 5 (DDH_-11) Perc 6 (DH-12) Depth of Perc 42" 67 Start Pre-Soak 11:26 11:43 End Pre-Soak 11:41 11:58 Time at 12" 11:41 11:58 Time at 9° 11:52 12:04 Time at 6" 12:11 12:16 Time (9"-6") 19 Min. 12 Min. Rate(Min./Inch) 6 Min./Inch 4 Min/Inch Test Passed: Test Passed: Test Failed: ❑ Test Failed: ❑ Steven Eriksen - ---- — - Test Performed By: Issac Rowe- North Andover Board of Health Board of Health Witness Comments: t5forsrmi2.docd 08115 Perc Test-Page 1 of 1 Commonwealth of Massachusetts City/Town of North Andover - Lot 2 Percolation Test 1�4 � EForm 1 Percolation test results must be submitted with the Soil Suitability Assessment for On-site Sewage Disposal. DEP has provided this form for use by local Boards of Health. Other forms may be used, but the information must be substantially the same as that provided here. Before using this form, check with the local Board of Health to determine the form they use- Imoutf When A. Site Information fillingng out forms on the computer, use only the tab Lois Lachapelle key to move your Owner Name cursor-do not 1975 Salem Street-Map 106 Block 106.E Lot 16 use the return ___ - - __. key. Street Address or Lot# North Andover MA 01845 City/Town State Zip Code Contact Person(if different from Owner) Telephone Number B. Test Results 611/16 12:27 p.m. 611/16 12:33 p.m. Date Time Date Time Observation Hole# Perc 1 (DH-1) Perc 2 (DH-2) Depth of Perc 45" 47" Start Pre-Soak 12:27 12:33 End Pre-Soak 12:42 12:49 Time at 12" 12:42 12:49 Time at 9" 12 53 12:52 Time at 6" 1:07 12:55 Time (9"-6") 14 Min. 3 Min. Rate (Min./Inch) 5 Min./Inch 1 Min/Inch Test Passed: ® Test Passed: Test Failed: ❑ Test Failed: ❑ Maureen Herald Test Performed By — Issac Rowe-North Andover Board of Health Board of Health Witness Comments: t5fonn 12.doc-08115 Perc Test-Page 1 of 1 Commonwealth of Massachusetts City/Town of North Andover - Lot 3 Percolation est Farm 1 Percolation test results must be submitted with the Soil Suitability Assessment for On-site Sewage Disposal. DEP has provided this form for use by local Boards of Health. Other forms may be used, but the information must be substantially the same as that provided here. Before using this form, check with the local Board of Health to determine the form they use. Important:When filling out forms A. Site Information on the computer, use only the tab Lois Lachapelle key to move your Owner Name cursor-do not 1975 Salem Street-Map 106_Block 106.B Lot 16 use the return - - --- - _ - —- key. Street Address or Lot## North Andover MA _.--..-.___ 01845 - _ r City/Town State Zip Code Contact Person(if different from Owner) Telephone Number ' B. Test Results 6/1/16 1:18 p_m. 6/1/16 1:40 p.m. _ Date Time Date Time Observation Hole# Perc 3 DH-6 Perc 4 DH-8 Depth of Perc 44" 44 Start Pre-Soak 1:18 1:40 End Pre-Soak 1:33 1 57 Time at 12" 1:33 1 57 Time at 9" 1:53 2:08 Time at 6" 2 21- 2:20 Time (9"-6") 28 Min. 12 Min. Rate (Min./Inch) 9 Min./inch 4 Min/Inch Test Passed: ® Test Passed: Test Failed: ❑ Test Failed: ❑ Maureen Herald Test Performed By: Issac Rowe- North Andover Board of Health Board of Health Witness Comments: t5form12.doc-08115 Perc Test•Page 1 of 1 Commonwealth of Massachusetts r1 CityiTown of North Andover - Lot 2 Form �I1 - Soil SuitabilityAssessment for On-Site Sewage Disposal g p A. Facility Information Lois Lachapelle Owner Name 1975 Salem Street Map 106 Block 106.8 Lot 16-- —_- __ __.....- __ - Street Address Map/Lot# North Andover Ma 01845 Cit, State Zip Code B. Site Information _ 1. (Check one) ❑ New Construction ❑ Upgrade ❑ Repair 2. Soil Survey Available? ❑ Yes ❑ No If yes: Web Soil Survey_____ _ 422D Source Soil Map Unit Canton Soil ___ ____ Slope and stoniness Soil Name Soil Limitations Glacial Till Moraine GeologiclParenk Material Landform 3. Surficial Geological Report Available? ❑ Yes ® No If yes: Year Published/Source Publication Scale Map Unit 4, Flood Rate Insurance Map Above the 500-year flood boundary? ® Yes ❑ No Within the 100-year flood boundary? ❑ Yes ❑ No If Yes,continue to#5. 5. Within a velocity zone? ❑ Yes ® No 6, Within a Mapped Wetland Area? ❑ Yes ® No MassGIS Wetland Data Layer: Wetland Type 7. Current Water Resource Conditions (USGS): 6/16 Range: ❑ Above Normal ❑ Normal ®/Below Normal MonthNear 8. Other references reviewed: t1 done T1,T2•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 1 of 8 Commonwealth of Massachusetts 5 ; City/Town of North Andover - Lot 2 I Form I I - Soil Suitability Assessment forOn-Site Sewage Disposal P C. On-site Review (minimum of two holes required at every proposed primary and reserve disposal area) Deep Observation Hole Number: DH-1 6/1/16 10:00 a.m. Sunny& Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: S Latitude/Longitude: 42 38 16"N / 71 03'6"W feet Description of Location: See plan 2, Land Use Woodland Some Stones 0-3% (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%) Oak& Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS,FS,TS) 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line >25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes FX] No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5, Groundwater Observed: ❑ Yes ® No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t1 done T1,T2<rev, 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal ^Page 2 of 8 �` Commonwealth of Massachusetts r `,r j,, City/Town of North Andover - Lot 2 ' Form 1 - Soil Suitability Assessment forOn-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-1 (Lot 21_ Coarse Fragments Redoximorphic Features Soil Horizon/Soil Matrix:Color- Soil Texture %by Volume Soil Depth(in.) Layer Moist(Munsell) (USDA) Soil Structure Consistence Other Depth Color Percent i Gravel Cobbles (Moist) &Stones 0-�" Ap 10 yr 2/2 j FSL Granular Friable 9-20" Bw 7,5 yr 4/6 FSL Massive Friable 204i0" C1 2.5y 5/3 LS 10% 50% Single Grain Friable Firm Additional Notes: t1 done T1,T2•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 3 of 8 Commonwealth of Massachusetts � City[Town of North Andover - Lot 2 '. Y dorm 'I 1 - oil Suitability Assessment for On-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-2 6/1/16 10.00 a.m. Sunny& Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38' 16"N / 71 03' 6"W feet - --- - 2. Land Use Woodland Some Stones 0-3% (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%1 Oak& Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH, BS, FS, 3. Distances from: Open Water Body > 100 fit Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes ❑ No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock C] Bedrock 5. Groundwater Observed: ❑ Yes Fx1 No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: -___......-..__— inches elevation t1 done T1,T2-rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal e Page 4 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 2 Form 11 ® Soil Suitability Assessment for On-Site Sewage Disposal ._ n-S_ite Review (continued) Deep Observation Hole Number: DH-2{Lot 2) Redoximorphic Features Coarse Fragments Soil Horizon/Soil Matrix:Color- Soil Texture %by Volume Soil Depth(in.) Layer Moist(Munsell) (USDA) Soil Structure Consistence Other Depth Color Percent Gravel Cobbles (Moist) &Stones 0-10" Ap 10 yr 212 FSL Granular Friable 10-20" Bw 10 yr 4/6 FSL Massive Friable 20-87" C1 2.5y 5/3 LS 10% 50% Single Grain Friable Firm Additional Notes: t1 done T1,T2>rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal Page 5 of 8 Commonwealth of Massachusetts City/Town of North Andover- Lot 2 Form oil Suitability Assessment for On-Site Sewage Disposal D. Determination of High Groundwater Elevation 1. Method Used: Obs. Hole#DH-1 Obs. Hole#DH-2 ❑ Depth observed standing water in observation hole inches inches ❑ Depth weeping from side of observation hole inches inches ❑ Depth to soil redoximorphic features (mottles) inches inches ❑ Depth to adjusted seasonal high groundwater(Sh) > 90" > 87" _ - -- ....---- - (USGS methodology) inches inches .....__._..__...-_-- Index Well Number Reading Date Sh= Sc—[Sr X (OWc—OWmax)/OWrl Obs. Hole# Sc Sr OWc OWrnax OWr Sh Obs. Hole# SC Sr OWc OWmax OWr Sh E. Depth of Pervious Material ---_ 1. Depth of Naturally Occurring Pervious Material a. Does at least four feet of naturally occurring pervious material exist in all areas observed throughout the area proposed for the soil absorption system? [q Yes ❑ No b. If yes, at what depth was it observed? Upper boundary: 20" Lower boundary: 90" inches inches c. If no, at what depth was impervious material observed? Upper boundary: _ Lower boundary: inches inches t1 done T1,T2.rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 6 of 8 Comrnonwealth of Massachusetts , ;;, City/Town of North Andover - Lot 2 !�� Form 11 - Soil Suitability Assessmentfor -Site Sewage Disposal F. Board of Health Witness �.._ Isaac Rowe North Andover Board of Health __--rne. —of Board of-HealthWitness-—- --- — Board o_fHealth---- --__ Na G. Soil Evaluator Certification I certify that I am currently approved by the Department of Environmental Protection pursuant to 310 CMR 15,017 to conduct soil evaluations and that the above analysis has been performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. 1 further certify that the results of my soil evaluation, as indicated in the attached Soil Evaluation Form, are accurate and in accordance with 310 CMR 15.100 through 15.107. 6/9/16 Signature of Soil Evaluator Date Steven Eriksen/SE685 6/30/18 Typed or Printed Name of Soil Evaluator/License# Expiration Date of License Nate: In accordance with 310 CMR 15.018(2)this form must be submitted to the approving authority within 60 days of the date of field testing,and to the designer and the property owner with Percolation es' Form 12. t1 done T1,T2 rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal -Page 7 of 8 Commonwealth of Massachusetts r R R , City/Town of North Andover- Lot 2 Form 11 - Sail Suitability Assessment for On-Site Sewage Disposal Field Diagrams Use this sheet for field diagrams: t1 done T1,72•rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal Page 8 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 2 f;r I Farm 11 - fail suitability Assessment for On-bite Sewage Disposal 4 � A. Facility Information - Lois Lac ha elle Owner Name 1975 Salem Street _ Map 106 Block 106.13 Lot 16 Street Address Map/Lot# North Andover Ma 01845 City State Zip Code B. Site Information 1. (Check one) ® New Construction ❑ Upgrade ❑ Repair 2, Soil Survey Available? ❑ Yes ❑ No If yes: Web Soil Survey 422D Source Soil Map Unit Canton Soil Slope and stoniness -------.---.__ Soli Name Soil Limitations Glacial Tilll Moraine Geologic/Parent Material Landform I Surficial Geological Report Available? ❑ Yes ® No If yes: Year Published/Source Publication Scale Map Unit 4, Flood Rate Insurance Map Above the 500-year flood boundary? M Yes ❑ No Within the 100-year flood boundary? ❑ Yes ❑ No If Yes,continue to#5. 5, Within a velocity zone? ❑ Yes ® No 6, Within a Mapped Wetland Area? ❑ Yes ® No MassGIS Wetland Data Layer: Wetland Type 7, Current Water Resource Conditions (USGS): 6/16 Range: ❑ Above Normal ❑ Normal ❑ Below Normal Month/Year S, Other references reviewed: t2 done T3,T4•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 1 of 8 Commonwealth of Massachusetts ME' r City/Town of North Andover - Lot 2 Form 11 - oil Suitability Assessment for On-Site Sewage Disposal G. On-Site Review (minimum of two holes required at every proposed primary and reserve disposal area) Deep Observation Hole Number: PH-3 6/1/16 11:00 a.m. Sunny & Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38 16"N / 71 03'6"W feet — Description of Location: See plan 2. Land Use Woodland Some stones 0-3% (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%) Oak& Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS,FS,TS) 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes Ej No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes ® No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t2 done T3,T4•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 2 of 8 Commonwealth of Massachusetts Cityll"own of North Andover - Lot 2 {..........%R Form 1 - Soil Suitability Assessment forOn-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-3 Lot 2� Redoximorphic Features Coarse Fragments Soli Horizon/Soil Matrix:Color- Soil Texture /o by Volume Soil Depth(in.) Layer Moist(Munsell) (USDA) Soil Structure Consistence Other Depth Color Percent Gravel Cobbles (Moist) i &Stones 0-10" Ap 10 yr 2/2 FSL Granular Friable 10-2:0" Bw 10 yr 4/6 i FSL Massive Friable � w20-86" G1 2.5y 5/3 LS 20% 50% Single Grain Friable i Firm { i - --. Additional Notes: t2 done T3.T4•rev. 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 3 of 8 Commonwealth of Massachusetts City/ -own of North Andover - Lot 2 Form 11 - Soil Suitability Assessment for On-Site Sewage Disposal C. On-Site Review (continued) —� Deep Observation Hole Number: DH-4 6/1/16 11:00 a.m. Sunny& Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38' 16"N / 71 03'6"W feet 2. Land Use Woodland Some stones 0-5% -------- _ (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope Oak & Pine Moraine SH Vegetation _La ndform Position on Landscape(SU,SH,6S,FS, 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes ❑ No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes ® No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t2 done T3,T4-rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 4 of 8 Commonwealth of Massachusetts i u City/Town of North Andover - Lot 2 � Form 11 - Soil Suitability Assessment for On-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-4 JLot 2� Redoximorphic Features Coarse Fragments Soil Horizon/Soil Matrix:Color- _ Soil Texture %by Volume Soil Depth(in.) Layer Moist(Munsell) (USDA) Soil Structure Consistence Other Depth Color Percent Gravel Cabbies (Moist) &Stones 0-101. Ap 10 yr 2/2 FSL Granular Friable 10-20" Bw 10 yr 4/6 FSL Massive Friable I 20-99" C1 2.5y 5/3 LS 10% 50% (Single Grain Friable Firm Additional Notes: t2 done T3,T4•rev,8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 5 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 2 iiForm 11 - Soil Suitability Assessment for On-Site Sewage Disposal 6-.-De-termination of High Groundwater Elevation 1, Method Used: Obs. Hole#DH-3 Obs. Hole#DH-4 ❑ Depth observed standing water in observation hole inches inches ❑ Depth weeping from side of observation hole inches inches ❑ Depth to soil redoximorphic features (mottles) inches inches ❑ Depth to adjusted seasonal high groundwater(Sh) >86" > 991, (USGS methodology) inches — inches Index Well Number Reading Date Sh = Sc—[Sr X (OWc—OWmax)/OW,l Obs. Hole# Sc Sr OWc OWmax OWr Sh Obs. Hole# So Sr OWc OWmax OWr Sh E. Depth of Pervious Material 1. Depth of Naturally Occurring Pervious Material a. Does at least four feet of naturally occurring pervious material exist in all areas observed throughout the area proposed for the soil absorption system? Yes ❑ No b, If yes, at what depth was it observed? Upper boundary: 20" Lower boundary: 991, inches inches c. If no, at what depth was impervious material observed? Upper boundary: Lower boundary: inches inches t2 done"r3,T4^rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 6 of 8 Commonwealth of Massachusetts P City/Town of North Andover - Lot 2 � Form 1 _ Soil Suitability Assessment for On-Site Sewage Disposal F. Board of Health Witness � � Isaac Rowe North Andover Board of Health Narne of Board of Health Witness Board of Health G. Soil Evaluator Certification I certify that I am currently approved by the Department of Environmental Protection pursuant to 310 CMR 15.017 to conduct soil evaluations and that the above analysis has been performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. 1 further certify that the results of my soil evaluation, as indicated in the attached Soil Evaluation Form, are accurate and in accordance with 310 CMR 15.100 through 15.107. 6/9/16 Signature of Soil Evaluator Date Steven n Eriksen/SE685 -- -- _ 6/30/18 ----.._- Type dorEvaluator/ Printed Name of Soil Evaluator/License# Expiration Date of License Note: In accordance with 310 CMR 15.018(2)this form must be submitted to the approving authority within 60 days of the date of field testing, and to the designer and the property owner with Percolation Test_l=c?r�ra_1-'. t2 done T3,T4^rev.8115 Form 11 —Soil Suitability Assessment for do-Site Sewage Disposal <Page 7 of 8 Commonwealth of Massachusetts MME RIBi„ City/Town of North Andover- Lot 2 Form 11 - Soil Suitability Assessment forOn-Site Sewage Disposal Field Diagrams Use this sheet for field diagrams: t2 done T3,T4.rev.8115 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 8 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 3 or - oil Suitability Assessment for On-Site Sewage Disposal A. Facility Information Lois Lachapelie _ Owner Name 1975 Salem Street — _ Maw 106 Block 106.8 Lot 16 Street Address Map/Lot# North Andover Ma --it — — - _ -- _.---- ._-....-. Cy State Zip Code B. Site Information 1. (Check one) ® New Construction ❑ Upgrade ❑ Repair 2. Soil Survey Available? ❑ Yes ❑ No If yes: Web Soil Survey 422D Source Soil Map Unit Czinton Soil __----- -__ Slope and stoniness Soil Name Soil Limitations Glacial Till Moraine Geologic/Parent Material Landfon-ri 3, Surficial Geological Report Available? ❑ Yes ❑ No If yes: _ Year Published/Source Publication Scale Map Unit 4, Flood Rate Insurance Map Above the 500-year flood boundary? ❑ Yes ❑ No Within the 100-year flood boundary? ❑ Yes ❑ No If Yes,continue to#5. 5. Within a velocity zone? ❑ Yes ® No 6. Within a Mapped Wetland Area? ❑ Yes ® No MassGIS Wetland Data Layer: Wetland Type 7, Current Water Resource Conditions (USGS): 6/16 Range: ❑ Above Normal ❑ Normal ❑ Below Normal Month/Year 8. Other references reviewed: Q done T5,T6-rev.8/15 Form 11 —Soil Suitability Assessment for On Site Sewage Disposal •Page 1 of 8 Commonwealth of Massachusetts 0. Cityn own of North Andover - Lot 3 or 1 - it uitability ssessment fir n- ite ewage isposal n- ite eview (minimum of two holes required at every proposed primary and reserve disposal area) Deep Observation Hole Number: DH-5 6/1/16 12_00 p.m. _ Sunny & Mild Date Time Weather 1, Location Ground Elevation at Surface of Hole: See plan — Latitude/Longitude: 42 38; 16"N / 71 03'6"W feet Description of Location: See plan 2, Land Use Woodland -_-- Some Stones (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etcJ Slope(%) Oak & Pine Moraine SH Vegetation Landform Position on Landscape(SLI,SH,BS,FS,TS) 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line >25 ft Drinking Water Well > 100 ft Other feet feet feet 4, Parent Material: Glacial Till _— — Unsuitable Materials Present: ❑ Yes No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock El Bedrock 5, Groundwater Observed: ❑ Yes ❑ No If yes: None— None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t3 done T5,T6°rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 2 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 3 Form 11 - Sail Suitability Assessment for On-Site Sewage Disposal Y 7r C. On-Site Review (continued) Deep Observation Hole Number: DH-5{Lot 31 Redoximorphic Features Coarse Fragments Depth{in,) Soil Horizon/Soil Matrix:Color- Soil Texture /o by Volume Soil Structure Cons oil Other Layer Moist(Munsell) (USDA) Cobbles Moist Depth Color Percent Gravel &Stones (Moist) 0-€1" Ap 10 yr 2/2 j FSL Granular Friable 8-20" Bw 10 yr 4/6 ' j FSL Massive Friable 1 20-04" C1 2,5y 5/3 LS 20% 50% Single Grain� Friable I Firm i Additional Notes: t3 done T536•rev, 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 3 of 8 f. Commonwealth of Massachusetts ;-,, City/ of North Andover - Lot 3 ;ram Form 1 - oil SuitabilityAssessment for On-Site a age isposal C. On-Site Review (continued) Deep Observation Hole Number: DH-6 6/1/16 12:00 p.m. _ Sunny & Mild_ Date Time Weather 1, Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38' 16" N / 71 03 6"W feet 2. Land Use Woodland Some Stones 0-5% (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%) Oak & Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS,FS, 3, Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 fit Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes ❑ No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5, Groundwater Observed: ❑ Yes ® No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t3 done T536•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 4 of 8 e, Commonwealth of Massachusetts City/Town of North Andover - Lot 3 w or - Soil Suitability Assessment for On-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-6 Lot 3} Coarse Fragments Redoximorphic Features %by Volume Soil Depth(in.) Soil Horizon!Soil Matrix:Color- Soil Texture Soil Structure Consistence Other Layer Moist(Munseil) (USDA) Cobbles Depth Color Percent Gravel (Moist) &Stones 0- S" A 10 yr 2/2 FSL Granular Friable 8-24" Bw 10 yr 4/6 FSL Massive Friable 24-66" C1 2.5y 5/3 LS 10% 50% Single Grain Friable Firm Additional Notes: t3 done T5,T5.rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 5 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 3 Form I - Soil Suitability Assessmentf®r On-Site Sewage Disposal e determination of High Groundwater Elevation 1, Method Used: Obs. Hole#DH-5 Obs. Hale#DH-6 ❑ Depth observed standing water in observation hole inches inches ❑ Depth weeping from side of observation hole _ inches inches ❑ Depth to soil redoximorphic features (mottles) inches inches ❑ Depth to adjusted seasonal high groundwater(Sh) > 94" > 86" (USGS methodology) inches inches Index Well Number Reading Date Sh = Sc—[Sr x (OWc—OWmax)/OWrl Obs- Hole# Sc Sr OWc OWmax OWr Si, Obs. Hole# Sc Sr OWc OWmax OWr Sh E. Depth of Pervious Material 1. Depth of Naturally Occurring Pervious Material a, Does at least four feet of naturally occurring pervious material exist in all areas observed throughout the area proposed for the soil absorption system? ❑ Yes ❑ No b. If yes, at what depth was it observed? Upper boundary: Lower boundary: _ inches inches c. If no, at what depth was impervious material observed? Upper boundary: 20" Lower boundary: 94" inches inches Q done T576•rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal ,Page 6 of 8 M:z Commonwealth of Massachusetts City/Town of North Andover - Lot 3 p or - Soil Suitability Assessment for On-Site Sewage Disposal F. Board of Health Witness Isaac Rowe North Andover Board of Health Name of Board of Health witness Board of Health G. Soil Evaluator Certification I certify that I am currently approved by the Department of Environmental Protection pursuant to 310 CMR 15.017 to conduct soil evaluations and that the above analysis has been performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. 1 further certify that the results of my soil evaluation, as indicated in the attached Soil Evaluation Form, are accurate and in accordance with 310 CMR 15.100 through 15.107. 6/9/16 Signature of Soil Evaluator Date Steven Eriksen/SE685 6/30l18 Typed or Printed Name of Soil Evaluator/License# Expiration Date of License Note: In accordance with 310 CMR 15.018(2)this form must be submitted to the approving authority within 60 days of the date of field testing, and to the designer and the property owner with F elrgola fior1 Tle=t Form 1,?. t3 done T5,T6-rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal -Wage 7 of 8 r. ammonwealth of Massachusetts ,EMS CitylTown of North Andover - Lot 3 Form 11 - Soil Suitability Assessment for On-Site Sewage Disposal Field Diagrams Use this sheet for field diagrams: t3 done T536•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal .Page 8 of 8 Commonwealth of Massachusetts R % ,a City/1 own of North Andover- Lot 3 Form 1 oil Suitability lessen for On-Site e a e is oa A. Facility Information Lois Lachapelle - - --- --- - - - --- Owner Name 1975 Salem Street -__- _ — - Map 106 Block 106_B Lot 16 Street Address Map/Lot# North Andover Ma 01845 City State Zip Code B. Site Information 1. (Check one) ® New Construction ❑ Upgrade ❑ Repair 2. Soil Survey Available? ® Yes ❑ No If yes: Web Soil Survey_____________ 422D Source Soil Map Unit Canton Soil Slope &stoniness Soil Name Soil Limitations Glacial Till Moraine Geologic/Parent Material Landform 1 Surficial Geological Report Available? ❑ Yes ® No If yes: Year Published/Source Publication Scale Map Unit 4. Flood Rate Insurance Map Above the 500-year flood boundary? 0 Yes ❑ No Within the 100-year flood boundary? ❑ Yes ® No If Yes,continue to#5. 5. Within a velocity zone? ❑ Yes `. No MassGIS Wetland Data Layer: 6. Within a Mapped Wetland Area? ❑ Yes ❑ No Wetland Type 7. Current Water Resource Conditions (USGS): 6/16 Range: ❑ Above Normal ❑ Normal ® Below Normal MonthNear 8. Other references reviewed: t4done T7.T8•rev. 8/1 5 Form 11 -Soil Suitability Assessment for On-Site Sewage Disposal -Page 1 of 8 Commonwealth of Massachusetts Cityffown of North Andover - Lot 3 Farm 11 - Sail Suitability Assessment for On-Site Sewage Disposal C. Can-Site Review (minimum of two holes required at every proposed primary and reserve disposal area) Deep Observation Hole Number: DH-7 6/1/16 1:00 P.M. Sunny &_Mild Date Time Weather 1. Location Ground Elevation at Surface of Hale: See plan _ Latitude/Longitude: 42 38 16"N / 71 03'6"W feet Description of Location: See plan _- 2. Land Use Woodland Some stones 0-50/0 (e g,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%) Oak & Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS,FS.TS) 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4, Parent Material: Glacial Till -_ _ Unsuitable Materials Present: ❑ Yes No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes ® No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t4done TT T8•rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal .Page 2 of 8 Commonwealth of Massachusetts City/Town of North Andover- Lot 3 ` orm I 1 - Soil Suitability Assessment forOn-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-7{Lot 3) Coarse Fragments o Soil Horizon/Soil Matrix;Color- Redoximorphic Features Soil Texture /o by volume Soil Depth(in.) Layer Moist(Munsell) USDA Cobbles Soil Structure Consistence Other (USDA)Depth 1 Color Percent Gravel (Moist) &Stones Ap 10 yr 2/2 FSL Granular Friable 9-191, Bw 10 yr 4/6 FSL Massive Friable '19-76" C1 2.5y 5/3 LS 20% 50% Single Grain Friable Firm i i Additional Notes: t4done T7,T8•rev.8115 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal ,Page 3 of 8 Commonwealth of Massachusetts x =' City/Town of North Andover - Lot 3 or 1 - Soil Suitability Assessment for On-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-8 6/1/16 1:00 P.M. Sunny& Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38' 16"N / 71 03 16" N feet 2. Land Use Woodland Some Stones 0-5% (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%) Oak& Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS, FS, 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes X No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes © No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches - — elevation t4done TY,Ts-rev.8/15 Form 11 -Soil Suitability Assessment for On-Site Sewage Disposal -Page 4 of 8 >`. Commonwealth of Massachusetts --; City/Town of North Andover - Lot 3 v Form 11 - Soil Suitability Assessment for On-Fite Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-8 Lot 3) Redoximorphic Features o Soil Coarse Soil Horizon/Soil Matrix:Color- Soil Texture ��by Volume Depth(in.) — Fragments Soil Structure Consistence, Other Layer Moist(Munsell) (USDA) Cobbles Moist Depth Color Percent Gravel ) p &Stones 0-101, Ap 10 yr 2/2 FSL Granular Friable 10-20" Bw 10 yr 4/6 FSL Massive Friable 20-72" C1 2.5y 5/3 LS 10% 50% Single Grain Friable Firm I i Additional Notes: t4done T7,T8.rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 5 of 8 t;, Commonwealth of Massachusetts City/Town of North Andover - Lot 3 a i or 11 a oil Suitability Assessment for On-Site e a e isposal D. Determination of High Groundwater Elevation 1. Method Used: Obs. Hole#DH-7 Obs. Hole#DH-8 ❑ Depth observed standing water in observation hole inches inches ❑ Depth weeping from side of observation hole inches inches ❑ Depth to soil redoximorphic features (mottles) inches inches ❑ Depth to adjusted seasonal high groundwater(Sh) > 76" > 72" _---- (USGS methodology) _ _ -------_ inches inches _ ----- - Index Well Number Reading Date Sh = So—[Sr X (OWc—OWmax)/OWr] Obs. Hole# Sc Sr OWc OWmax OWr Sh Obs. Hole# Sc Sr OWc OWmax OWr Sh E. Depth of Pervious Material 1. Depth of Naturally Occurring Pervious Material a. Does at least four feet of naturally occurring pervious material exist in all areas observed throughout the area proposed for the soil absorption system? F1 Yes ❑ No b. If yes, at what depth was it observed? Upper boundary: Lower boundary: inches inches c. If no, at what depth was impervious material observed? Upper boundary: 191, Lower boundary: 76" inches inches t4done`r7.T8-rev.8/1 a Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 6 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 3 or 1 m oil SuitabilityAssessment for On-Site Sewage Disposal F. Board of Health Witness Isaac Rowe North Andover Board of Health - - _ --- - - _ -_ -- - - - Name of--Boaard of Health- Witness — Board of Health G. Boil Evaluator Certification I certify that I am currently approved by the Department of Environmental Protection pursuant to 310 CMR 15,017 to conduct soil evaluations and that the above analysis has been performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. 1 further certify that the results of my soil evaluation, as indicated in the attached Soil Evaluation Form, are accurate and in accordance with 310 CMR 15.100 through 15.107. 6/9/16 Signature of Soil Evaluator Date Steven Eriksen/SE685 6/30/18 Typed or Printed Name of Soil Evaluator/License# Expiration Date of License Note: In accordance with 310 CMR 15.018(2)this form must be submitted to the approving authority within 60 days of the date of field testing,and to the designer and the property owner with _-rc r;1aflon Test Fornn 12'. t4done T7,T8•rev.8/18 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 7 of 8 Commonwealth of Massachusetts l City/Town of North Andover - Lot 3 Form 'I I - Soil Suitability Assessment forOn-Site Sewage Disposal eY ,A Field Diagrams Use this sheet for field diagrams: t4done T7,T8 rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal Page 8 of 8 Commonwealth of Massachusetts City/l"own of North Andover - Lot 1 � Form 11 - Soil Suitability Assessment for tin-Site Sewage Disposal t . Facility Information Lois Lachapelle - Owner Name 1975 Salem Street _ Map 106 Block 106,B Lot 16 Street Address Map/Lot# North Andover Ma 01845 City State Zip Code -B. Site Information 1. (Check one) ® New Construction ❑ Upgrade ❑ Repair 2. Soil Survey Available? ❑ Yes ❑ No If yes: Web Soil Surve 422D Source Soil Map Unit Canton Soil Slope-and stoniness Soil Name Soil Limitations Glacial Till Moraine _ Geologic/Parent Material Landform 3. Surficial Geological Report Available? ❑ Yes ® No If yes: Year Published/Source Publication Scale Map Unit 4. Flood Rate Insurance Map Above the 500-year flood boundary? ❑ Yes ❑ No Within the 100-year flood boundary? ❑ Yes ❑ No If Yes,continue to#5. 5. Within a velocity zone? ❑ Yes ® No 6, Within a Mapped Wetland Area? ❑ MassGIS Wetland Data Layer: Yes � No Wetland Type 7, Current Water Resource Conditions (USGS): 6/16 Range: ❑ Above Normal ❑ Normal ® Below Normal Month/Year 8. Other references reviewed: t5 done TJ,T1 O•rev,8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 1 of 8 3` Commonwealth of Massachusetts City/Town of North Andover- Lot 1 Form 11 - Soil Suitability Assessment for On-Site Sewage Disposal C. Can-Site Review (minimum of two holes required at every proposed primary and reserve disposal area) Deep Observation Hole Number: DH-9 _ 6/2/16 10:00 a.m. Sunn & Mild Date Time Weather 1, Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38' 16"N / 71 03'6"W feet —— --- Description of Location: See�lan 2. Land Use Woodland Some Stones 0-5% __ __ — (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc,) Slope(%) Oak & Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS,FS,TS) 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes Q No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t5 done T9,T10•rev.5/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal -Page 2 of 8 Commonwealth of Massachusetts a City/1-own of North Andover - Lot 1 ,q dorm 11 - Soil Suitability Assessment for Can-Site Sewage Disposal Review (continued) — Deep Observation Hole Number: DH-9{Lot 1}_ Redoximorphic Features Coarse Fragments Soil Horizon/Soil Matrix:Color-' Soil Texture to by Volume Soil Depth(in.) --- Soil Structure Consistence Other Layer Moist(Munsell) i (USDA) Cobbles Depth Color Percent Gravel Stones (Moist) & 0-12" Ap 10 yr 2/2 FSL Granular Friable 12-24" Bw 10 yr 4/6 FSL Massive Friable 24-82' C1 2.5y 5/3 LS 20% 50% Single Grain Friable Firm i �i Additional Notes: t5 done T9,I'l0-rev. 8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal Page 3 of 8 Commonwealth of Massachusetts �,g _ City/Town of North Andover - Lot 1 +ti Form 11 - Soil Suitability Assessment for tin-Site Sewage Disposal C. On-Site Review (continued) ----.----__�.__ Deep Observation Hole plumber: DH-10 6/2/16 10:00 a.m. Su & Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: See plan _ Latitude/Longitude: 42 38' 16"N / 71 03'6"W feet 2. Land Use Woodland Some Stones ra (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g,cobbles,stones,boulders,etc) Slope Oak & Pine Moraine SH _ _ -. --- - -------- — — - - - --- — — ---- -- Vegetation Landform Position on Landscape(Su,SH,BS,FS, 3. Distances from: Open Water Body > 100 ft Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ElYes ❑ No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes © No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t5 done T9,T10-rev,8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal <Page 4 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 1 Farm 11 - Soil Suitability Assessment for On-Site Sewage Disposal 3S . On-Site Review (continued) Deep Observation Hole Number: DH-10(Lot 1j_ ' se Fragments Coarse Redoximorphic Features Co b Volume Soil Percent Depth(in.) Soil Horizon)Soil Matrix:Color- -:] Soil Texture y Soil Structure Consistence Other Layer Moist(Munsell) (USDA) Cobbles Depth Color Gravel (Moist) &Stones 0-12" Ap 10 yr 2/2 FSL Granular Friable 12-24" Bw 10 yr 4/6 FSL Massive Friable i 24-82" C1 2.5y 5/3 LS 10% 50% Single Grain Friable Firm Additional Notes: t5 done T9.T10-rev, 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal Page 5 of 8 Commonwealth of Massachusetts 1=4 City/Town of North Andover - Lot 1 Form 11 - Soil Suitability Assessment for On-Site Sewage Disposal z�5 D. Determination of High Groundwater Elevation 1. Method Used: Obs. Hole#DH-9 Obs. Hole#DH-10 ❑ Depth observed standing water in observation hole inches inches ❑ Depth weeping from side of observation hole inches inches ❑ Depth to soil redoximorphic features (mottles) inches inches ❑ Depth to adjusted seasonal high groundwater(Sh) > 82" >82" (USGS methodology) inches inches Index Well Number Reading Date Sh = Sc—[Sr x (OWc—OWmax)/OWrj Obs. Hole# Sc Sr OWc OWmax OWr Sh Obs. Hole# Sc Sr OWc OWmax OWr Sh E. Depth of Pervious Material 1. Depth of Naturally Occurring Pervious Material a. Does at least four feet of naturally occurring pervious material exist in all areas observed throughout the area proposed for the soil absorption system? ❑ Yes ❑ No b. If yes, at what depth was it observed? Upper boundary: 24'- Lower boundary: 82" _ inches inches c. If no, at what depth was impervious material observed? Upper boundary: Lower boundary: _ inches inches t5 done 19. T 10•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 6 or 8 � . Commonwealth of Massachusetts City/Town of North Andover - Lot 1 T or 1 - oil Suitability Assessmentfor On-Site Sewage Disposal F. Board of Health Witness Isaac Rowe North Andover Board of Health Name of Board of Health Witness Board of Health G. Soil Evaluator Certification I certify that I am currently approved by the Department of Environmental Protection pursuant to 310 CMR 15.017 to conduct soil evaluations and that the above analysis has been performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. 1 further certify that the results of my soil evaluation, as indicated in the attached Soil Evaluation Form, are accurate and in accordance with 310 CMR 15.100 through 15.107, - _-_-_-__ _....... _-_. 6/9/16 — _ — - -— - Signature of_Soi)Evaluator Data Steven Eriksen/SE685 6/30/18 Typed or Printed Name of Soil Evaluator/License# Expiration Date of License Mote: In accordance with 310 CMR 15.018(2)this form must be submitted to the approving authority within 60 days of the date of field testing,and to the designer and the property owner with ,l rco1;;',ion Test Form 12. 6 done T0,T10,rev 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 7 of 8 Commonwealth of Massachusetts " 'I, City/Town of North Andover - Lot 1 Form I - Soil Suitability Assessment forOn-Site Sewage Disposal Field Diagrams Use this sheet for field diagrams: t5 done'rg,T10•rev.8/15 Form 11—Soil Suitability Assessment for On-Site Sewage Disposal Page 8 of 8 Commonwealth of Massachusetts Rom- r:. City/Town of North Andover - Lot 1 or 1 oil Suitability Assessment for On-Site Sewage Disposal C. (fin-Site Review (minimum of two holes required at every proposed primary and reserve disposal area) Deep Observation Hole Number: DH-11 6/2/16 11:00 a.m. Sunny & Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: See plan Latitude/Longitude: 42 38 16"N / 71 03'6"W feet - ---- - Description of Location: Se Ilan 2. Land Use Woodland Some Stones 0-5% (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones,boulders,etc.) Slope(%) Oak& Pine Moraine SH Vegetation Landform Position on Landscape(SU,SH,BS, FS,TS) 3. Distances from: Open Water Body > 100 ft _ Drainage Way > 100 ft Wetlands > 100 ft feet feet feet Property Line >25 ft Drinking Water Well > 100 ft Other feet feet feat 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes ❑ No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5, Groundwater Observed: ❑ Yes M No If yes: None None Depth Weeping from Pit Depth Standing Water in Hole Estimated Depth to High Groundwater: inches elevation t6 done T11,T12•rev. 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 2 of 8 ate , Commonwealth of Massachusetts City/Town of [North Andover - Lot 1 Form 11 a Soil Suitability Assessment for Can-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-11 jLot 11 Redoximor p hic Features iCoarse Fragments _r Soil Horizon/Soil Matrix:Color- Soil Texture %by Volume Soil Depth(in.) Soil Structure Consistence Other Layer Moist(Munsell) ; i (USDA) Cobbles Depth Color Percent Gravel (Moist) &Stones 0-12" Ap 10 yr 2/2 FSL I Granular Friable 12-26" ' Bw 10 yr 4/6 FSL Massive-able 26-66" C1 2.5y 5/3 LS 20% 50% Single Grain Friable Firm Additional Notes: W done T11,T12•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 3 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 1 ) Form 11 - Soil Suitability Assessment for tin-Site Sewage Disposal C. Can-Site Review (continued) Deep Observation Hole Number: DH-12 6/2/16 11:00 a.m. Sunny & Mild Date Time Weather 1. Location Ground Elevation at Surface of Hole: Seep an Latitude/Longitude: 42 38' 16"N / 71 03' 6"W feet -- 2. Land Use Woodland Some stones 0 5% - (e.g.,woodland,agricultural field,vacant lot,etc.) Surface Stones(e.g.,cobbles,stones, boulders,etc.) Slope(%) Oak & Pine Moraine SH Vegetation Landform Position on Landscape(SU,SFI, BS, FS, 3. Distances from: Open Water Body >_100 ft Drainage Way > 100-ft Wetlands > 100 ft feet feet feet Property Line > 25 ft Drinking Water Well > 100 ft Other feet feet feet 4. Parent Material: Glacial Till Unsuitable Materials Present: ❑ Yes ❑ No If Yes: ❑ Disturbed Soil ❑ Fill Material ❑ Impervious Layer(s) ❑ Weathered/Fractured Rock ❑ Bedrock 5. Groundwater Observed: ❑ Yes ❑ No If yes: None None Depth Weeping from Pit Depth Standing Water in Hale Estimated Depth to High Groundwater: inches elevation t5 done T11,T12-rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal .Page 4 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 1 Form 11 - Soil Suitability Assessment for On-Site Sewage Disposal C. On-Site Review (continued) Deep Observation Hole Number: DH-12 Lot_1j_ Redoximorphic Features Coarse Fragments Soil Horizon/ o Soil Matrix:Color- Soil Texture �o by Volume Soil i Depth(in.) ! Layer Moist(Munsell) (USDA) Soil Structure Consistence''. Other Depth Color Percent GravelT.00bbles (Moist) tones i 0-12" Ap 10 yr 2/2 FSL Granular i Friable 12-26" Bw 10 yr 4/6 FSL Massive Friable 26-83" C i 2.5y 5/3 LS 10% 50% Single Grain Friable , Firm I Additional Notes: tG done T11,T12-rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 5 of 8 s�Irk Commonwealth of Massachusetts : City/Town of North Andover - Lot 1 i r1 Form 11 - Soil Suitability Assessment forOn-Site Sewage Disposal D. Determination of High Groundwater Elevation 1, Method Used-, Obs. Hole#DH-11 Obs. Hole#DH-12 ❑ Depth observed standing water in observation hole inches _ inches ❑ Depth weeping from side of observation hole inches inches ❑ Depth to soil redoximorphic features (mottles) inches inches ❑ Depth to adjusted seasonal high groundwater(Sh) > 86" > 83° (USGS methodology) inches — inches Index Well Number Reading Date Sh = Sc— [Sr X(OWc—OWmax)IOWr] Obs. Hole# Sc Sr Owc OWmax Owl Sh Obs. Hole# Sc Sr Owo OWmax Owl Si, E. Depth of Pervious Material 1. Depth of Naturally Occurring Pervious Material a. Does at least four feet of naturally occurring pervious material exist in all areas observed throughout the area proposed for the soil absorption system? 21 Yes ❑ No b. If yes, at what depth was it observed? Upper boundary: 26" Lower boundary: 86" _ inches _ inches c. If no, at what depth was impervious material observed? Upper boundary: — Lower boundary: _ inches inches 1:6 done T11,T 12-rev. 8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal -Page 6 of 8 ate`„ Commonwealth of Massachusetts City/Town of North Andover - Lot 1 ji "r Form 1 oil Suitability Assessment forOn-Site Sewage Disposal F. Board of Health Witness ---__. Isaac Rowe _ _ North Andover Board of Health Name of Board of Health Witness Board of Health G. Soil Evaluator Certification I certify that I am currently approved by the Department of Environmental Protection pursuant to 310 CMR 15.017 to conduct soil evaluations and that the above analysis has been performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. 1 further certify that the results of my soil evaluation, as indicated in the attached Soil Evaluation Form, are accurate and in accordance with 310 CMR 15.100 through 15.107. r 7 - = - -- - - 6/9/16 Signature of Soil Evaluator Date Steven Eriksen/SE685 6/30/18 - - - - -....- - ...._ _ - -- - - - ------ Typed or Printed Name of Soil Evaluator/License# Expiration Date of License Note: In accordance with 310 CMR 15.018(2)this form must be submitted to the approving authority within 60 days of the date of field testing, and to the designer and the property owner with "efcclation l-est C c l n 1 12. t6 done T11, T12•rev.8/15 Form 11 -Soil Suitability Assessment for On-Site Sewage Disposal •Page 7 of 8 Commonwealth of Massachusetts City/Town of North Andover - Lot 1 Form 11 - Soil Suitability Assessment f©r Can-Site Sewage Disposal Field Diagrams - —� Use this sheet for field diagrams: t6 done`r11,T12•rev.8/15 Form 11 —Soil Suitability Assessment for On-Site Sewage Disposal •Page 8 of 8