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HomeMy WebLinkAboutMiscellaneous - 12 MASSACHUSETTS AVENUE 4/30/2018 (9) fa Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetl7 .. ands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 Massachusetts Wetlands Protection Act M.G.L.c.-131,§40 City/Town:NORTH ANDOVER A. General Information 1.Conservation Commission NORTH ANDOVER 2.Issuance a. ri OOC b.Cj Amended OOC 3:Applicant Details a.First Name STEVEN b.Last Name CHARRON c.Organization GLOBAL COMPANIES LLC d.Mailing Address 404 WYMAN STREET e.City/Town WALTHAM f.State MA g.Zip Code 02451 4.PrgpertyOwner a.First Name STEVEN b.Last Name CHARRON c.Organization GLOBAL COMPANIES LLC d.Mailing Address 404 WYMAN STREET e.City/Town WALTHAM f.State MA &Zip Code 02451 5.Project Location a.Street Address 12 MASSACHUSETTS AVENUE b.City/Town NORTH ANDOVER c.Zip Code 01845 d.Assessors Map/Plat#MAP 2 e.Parcel/Lot# LOT 3 f.Latitude ON g.Longitude OW 6.Property recorded attheRegistry of Deed for: a.County b.Certificate c.Book d.Page NORTHERN ESSEX 12177 199 7 Dates a.Date NOI Filed:5/25/2011 b.Date Public Hearing Closed:6/22/2011 c.Date Of Issuance:6/23/2011 8.Final Approved Plans and OtHer`Docun exits a.Plan Title: . b.Plan Prepared by: e.Plan Signed/Stamped by: d.Revised Final Date: e.Scale: PERMIT SITE PLAN HANCOCK FOR NOTICE OF ASSOCIATES JOSEPH D.PEZNOLA P.E. 06/22/2011 INTENT B. Findings g 1.Findirigspursuantto fhe Massachusetts Wetland§Protection Act Page 1 of 10*ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 Massachusetts Wetlands Protection Act M.G.L.c. 131,§40 City/Iown:NORTHANDOVER Following the review of the the above-referenced Notice of Intent and based on the information provided in this application and presented at the public hearing,this Commission finds that the areas in which work is proposed is significant to the following interests of the Wetlands Protection Act. Check all that apply: a. f�I Public Water Supply b. f__�! Land Containing Shellfish c.r Prevention of Pollution d. r Private Water Supply e. r: Fisheries t f. r; Protection of Wildlife Habitat s g. F Ground Water Supply h. 1�! Storm Damage Prevention_ i. r Flood Control I 2.Commission hereby finds the project,as proposed,is: Approved subject to: a.r The following conditions which are necessary in accordance with the performance standards set forth in the wetlands regulations. This Commission orders that all work shall be performed in accordance with the Notice of Intent referenced above,the following General Conditions,and any other special conditions attached to this Order.To the extent that the following conditions modify or differ from the plans,specifications,or other proposals submitted with the Notice of Intent,these conditions shall control. Denied because: b.r The proposed work cannot be conditioned to meet the performance standards set forth in the wetland regulations.Therefore, work on this project may not go forward unless and until a new Notice of Intent is submitted which provides measures which are adequate to protect interests of the Act,and a final Order of Conditions is issued.A description of the performance standards which the proposed work cannot meet is attached to this Order. c.r The information submitted by the applicant is not sufficient to describe the site,the work or the effect of the work on the interests identified in the Wetlands Protection Act.Therefore,work on this project may not go forward unless and until a revised Notice of Intent is submitted which provides sufficient information and includes measures which are adequate to protect the interests of the Act,and a final Order of Conditions is issued.A description of the specific information which is lacking and why it is necessary is attached to this Order as per 310 CMR 10.05(6)(c). 3.r Buffer Zone Impacts:Shortest distance between limit of project disturbance and the wetland resource 13 y area specified in 310CMR10.02(1)(a). a linear feet Inland Resource Area Impacts:(For Approvals Only): Resource Area Proposed Permitted Proposed Permitted Alteration Alteration Replacement Replacement 4. C Bank a.linear feet b.linear feet c.linear feet d.linear feet 5.r Bordering Vegetated Wetland a.square feet b.square feet c.square feet d.square feet 6. F!Land under Waterbodies and Waterways a.square feet b.square feet c.square feet d.square feet e.c/y dredged f.c/y dredged 7.r Bordering Land Subject to Flooding a.square feet b.square feet c.square feet d.square feet Page 2 of 10* ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: y Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 l� City/Town:NORTH ANDOVER s, Massachusetts Wetlands Protection Act M.G.L.c. 131,§40 Cubic Feet Flood Storage e.cubic feet f.cubic feet g.cubic feet h.cubic feet 8.r Isolated Land Subject to Flooding a.square feet b.square feet Cubic Feet Flood Storage c.cubic feet d.cubic feet e.cubic feet f.cubic feet 9.r Riverfront Area a.total sq.feet b.total sq.feet Sq ft within 100 ft c.square feet d.square feet e.square feet f.square feet Sq ft between 100-200 ft g.square feet h.square feet i.square feet j.square feet Coastal Resource Area Impacts: Resource Area Proposed Permitted Proposed Permitted Alteration Alteration Replacement Replacement 10.r'Designated Port Areas Indicate size under Land Under the Ocean,below 11.C,Land Under the Ocean a.square feet b.square feet c.c/y dredged d.c/y dredged 12.r"Barrier Beaches Indicate size under Coastal Beaches and/or Coastal Dunes below 13.F Coastal Beaches a.square feet b.­square feet c.c/y nourishment d.c/y nourishment 14.F,Coastal Dunes a.square feet b.square feet c.c/y nourishment d.cly nourishment 15.1—:Coastal Banks T linear feet b.linear feet 16.r Rocky Intertidal Shores a square feet b.square feet 17.r Salt Marshes a.square feet b.square feet c.square feet d.square feet 18.FJ Land Under Salt Ponds a square feet b.square feet c.c/y dredged d.c/y dredged 19.r.,Land Containing Shellfish a.square feet b.square feet c.square feet d.square feet Page 3 of 10*ELECTRONIC COPY i i Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 lily` Massachusetts Wetlands Protection Act M.G.L.c. 131, §40 City/fown:NORTH ANDOVER Indicate size under Coastal Banks,inland Bank,Land Under the 20.r Fish Runs Ocean,and/or inland Land Under Waterbodies and Waterways, above c.c/y dredged d.c/y dredged 21.r Land Subject to Coastal Storm Flowage a.square feet b.square feet i� 22. I- Restoration/Enhancement(For Approvals Only) If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.5.c&d or B.17.c&d above,please entered the additional amount here. i a.square feet of BVW b.'square feet of Salt Marsh 23. r Streams Crossing(s) If the project involves Stream Crossings,please enter the number of new stream crossings/number of replacement stream crossings. a.number of new stream crossings b.number of replacement stream crossings C. General Conditions Under Massachusetts Wetlands Protection Act The following conditions are only applicable to Approved projects 1. Failure to comply with all conditions stated herein,and with all related statutes and other regulatory measures,shall be deemed cause to revoke or modify this Order. 2. The Order does not grant any property rights or any exclusive privileges;it does not authorize any injury to private property or invasion of private rights. 3. This Order does not relieve the permittee or any other person of the necessity of complying with all other applicable federal, state,or local statutes,ordinances,bylaws,or regulations. 4. The work authorized hereunder shall be completed within three years from the date of this Order unless either of the following apply: a.the work is a maintenance dredging project as provided for in the Act;or b.the time for completion has been extended to a specified date more than three years,but less than five years,from the date of issuance.If this Order is intended to be valid for more than three years,the extension date and the special circumstances warranting the extended time period are set forth as a special condition in this Order. 5. This Order may be extended by the issuing authority for one or more periods of up to three years each upon application to the issuing authority at least 30 days prior to the expiration date of the Order. 6. If this Order constitutes an Amended Order of Conditions this Amended Order of Conditions does not exceed the issuance date of the original Final Order of Conditions. 7. Any fill used in connection with this project shall be clean fill.Any fill shall contain no trash,refuse,rubbish,or debris,including but not limited to lumber,bricks,plaster,wire,lath,paper,cardboard,pipe,tires,ashes,refrigerators,motor vehicles,or parts of any of the foregoing. 8. This Order is not final until all administrative appeal periods from this Order have elapsed,or if such an appeal has been taken, until all proceedings before the Department have been completed. 9. No work shall be undertaken until the Order has become final and then has been recorded in the Registry of Deeds or the Land Court for the district in which the land is located,within the chain of title of the affected property.In the case of recorded land, Page 4 of 10*ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 Massachusetts Wetlands Protection Act M.G.L.c. 131,§40 City/Town:NORTH ANDOVER the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land upon which the proposed work is to be done.In the case of the registered land,the Final Order shall also be noted on the Land Court Certificate of Title of the owner of the land upon which the proposed work is done.The recording information shall be submitted to the Conservation Commission on the form at the end of this Order,which form must be stamped by the Registry of Deeds, prior to the commencement of work.. 10. A sign shall be displayed at the site not less then two square feet or more than three square feet in size bearing the words, "Massachusetts Department of Environmental Protection" [or'MassDEP"] File Number:"242-1521" 11. Where the Department of Environmental Protection is requested to issue a Superseding Order,the Conservation Commission shall be a party to all agency proceedings and hearings before Mass DEP. 12. Upon completion of the work described herein,the applicant shall submit a Request for Certificate of Compliance(WPA Form 8A)to the Conservation Commission. 13. The work shall conform to the plans and special conditions referenced in this order. 14. Any change to the plans identified in Condition#13 above shall require the applicant to inquire of the Conservation Commission in writing whether the change is significant enough to require the filing of a new Notice of Intent. 15. The Agent or members of the Conservation Commission and the Department of Environmental Protection shall have the right to enter and inspect the area subject to this Order at reasonable hours to evaluate compliance with the conditions stated in this Order,and may require the submittal of any data deemed necessary by the Conservation Commission or Department for that evaluation. 16. This Order of Conditions shall apply to any successor in interest or successor in control of the property subject to this Order and to any contractor or other person performing work conditioned by this Order. 17. Prior to the start of work,and if the project involves work adjacent to a Bordering Vegetated Wetland,the boundary of the wetland in the vicinity of the proposed work area shall be marked by wooden stakes or flagging.Once in place,the wetland boundary markers shall be maintained until a Certificate of Compliance has been issued by the Conservation Commission. 18. All sedimentation barriers shall be maintained in good repair until all disturbed areas have been fully stabilized with vegetation or other means.At no time shall sediments be deposited in a wetland or water body.During construction,the applicant or his/her designee shall inspect the erosion controls on a daily basis and shall remove accumulated sediments as needed.The applicant shall immediately control any erosion problems that occur at the site and shall also immediately notify the Conservation Commission,which reserves the right to require additional erosion and/or damage prevention controls it may deem necessary. Sedimentation barriers shall serve as the limit of work unless another limit of work line has been approved by this Order. NOTICE OF STORMWATER CONTROL AND MAINTENANCE REQUIREMENTS 19. The work associated with this Order(the"Project")is(1) r is not(2)r7l' subject to the Massachusetts Stormwater Standards. If the work is subject to Stormwater Standards,then the project is subject to the following conditions; a) All work,including site preparation,land disturbance,construction and redevelopment,shall be implemented in accordance with the construction period pollution prevention and erosion and sedimentation control plan and,if applicable,the Stormwater Pollution Prevention Plan required by the National Pollutant Discharge Elimination System Construction General Pemrrit as required by Stormwater Standard 8.Construction period erosion,sedimentation and pollution control measures and best management practices(BMPs)shall remain in place until the site is fully stabilized. b) No stormwater runoff may be discharged to the post-construction stormwater BMPs unless and until a Registered Professional Engineer provides a Certification that:i.all construction period BMPs have been removed or will be removed by a date certain specified in the Certification.For any construction period BMPs intended to be converted to post construction operation for stormwater attenuation,recharge,and/or treatment,the conversion is allowed by the MassDEP Stormwater Handbook BMP specifications and that the BMP has been properly cleaned or prepared for post construction operation, including removal of all construction period sediment trapped in inlet and outlet control structures;ii..as-built final construction BMP plans are included,signed and stamped by a Registered Professional Engineer,certifying the site is fully stabilized;iii. any illicit discharges to the stormwater management system have been removed,as per the requirements of Stormwater Page 5 of 10*ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: r Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 Massachusetts Wetlands Protection Act M.G.L.c. 131, §40 City/Town:NORTHANDOVER Standard 10;iv.all post-construction stormwater BMPs are installed in accordance with the plans(including all planting plans)approved by the issuing authority,and have been inspected to ensure that they are not damaged and that they are in proper working condition,v.any vegetation associated with post-construction BMPs is suitably established to withstand erosion. c) The landowner is responsible for BMP maintenance until the issuing authority is notified that another party has legally assumed responsibility for BMP maintenance.Prior to requesting a Certificate of Compliance,or Partial Certificate of Compliance,the responsible parry(defined in General Condition 19(e))shall execute and submit to the issuing authority an Operation and Maintenance Compliance Statement("O&M Statement")for the Stormwater BMPs identifying the party responsible for implementing the stormwater BMP Operation and Maintenance Plan("O&M Plan")and certifying the following:i.)the O&M Plan is complete and will be implemented upon receipt of the Certificate of Compliance,and ii.)the future responsible parties shall be notified in writing of their ongoing legal responsibility to operate and maintain the stormwater management BMPs and implement the Stormwater Pollution Prevention Plan. d) Post-construction pollution prevention and source control shall be implemented in accordance with the long-term pollution prevention plan section of the approved Stormwater Report and,if applicable,the Stormwater Pollution Prevention Plan required by the National Pollutant Discharge Elimination System Multi-Sector General Penrut. e) Unless and until another party accepts responsibility,the landowner,or owner of any drainage easement,assumes responsibility for maintaining each BMP.To overcome this presumption,the landowner of the property must submit to the issuing authority a legally binding agreement of record,acceptable to the issuing authority,evidencing that another entity has accepted responsibility for maintaining the BMP,and that the proposed responsible party shall be treated as a permittee for purposes of implementing the requirements of Conditions 19(f)through 19(k)with respect to that BMP.Any failure of the proposed responsible party to implement the requirements of Conditions 19(f)through 19(k)with respect to that BMP shall be a violation of the Order of Conditions or Certificate of Compliance.In the case of stormwater BMPs that are serving more than one lot,the legally binding agreement shall also identify the lots that will be serviced by the stormwater BMPs.A plan and easement deed that grants the responsible party access to perform the required operation and maintenance must be submitted along with the legally binding agreement. f) The responsible party shall operate and maintain all stormwater BMPs in accordance with the design plans,the O&M Plan, and the requirements of the Massachusetts Stormwater Handbook. g) The responsible party shall: 1.Maintain an operation and maintenance log for the last three(3)consecutive calendar years of inspections,repairs, maintenance and/or replacement of the stormwater management system or any part thereof,and disposal(for disposal the log shall indicate the type of material and the disposal location); 2.Make the maintenance log available to MassDEP and the Conservation Commission("Commission")upon request;and 3.Allow members and agents of the MassDEP and the Commission to enter and inspect the site to evaluate and ensure that the responsible party is in compliance with the requirements for each BMP established in the O&M Plan approved by the issuing authority. h) All sediment or other contaminants removed from stormwater BMPs shall be disposed of in accordance with all applicable federal,state,and local laws and regulations. ) Illicit discharges to the stormwater management system as defined in 310 CMR 10.04 are prohibited. j) The stormwater management system approved in the Order of Conditions shall not be changed without the prior written approval of the issuing authority. k) Areas designated as qualifying pervious areas for the purpose of the Low Impact Site Design Credit(as defined in the MassDEP Stormwater Handbook,Volume 3,Chapter 1,Low Impact Development Site Design Credits)shall not be altered without the prior written approval of the issuing authority. Access for maintenance,repair,and/or replacement of BMPs shall not be withheld.Any fencing constructed around storinwater BMPs shall include access gates and shall be at least six inches above grade to allow for wildlife passage. Special Conditions: SEE ATTACHED. Page 6 of 10* ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: `Z. = Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#395986 Massachusetts Wetlands Protection Act M.G.L.c. 131,§40 City/rown:NORTH ANDOVER Page 7 of 10*ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5-Order of Conditions eDEP Transaction#:395986 r Massachusetts Wetlands Protection Act M.G.L.c. 131, §40 City/Town:NORTHANDOVER A Findings Under Municipal Wetlands Bylaw or Ordinance I. Is a municipal wetlands bylaw or ordinance applicable?r YesT7 No 2• The Conservation Commission hereb check one that a lies : a. r DENIES the proposed work which cannot be conditioned to meet the standards set forth in a municipal ordinance or bylaw specifically: 1.Municipal Ordinance or Bylaw 2.Citation Therefore,work on this project may not go forward unless and until a revised Notice of Intent is submitted which provides measures which are adequate to meet these standards,and a final Order or Conditions is issued.Which are necessary to comply with a municipal ordinance or bylaw. ' b. F APPROVES the proposed work,subject to the following additional conditions. 1.Municipal Ordinance or Bylaw TOWN OF NORTH 2.Citation CHAPTER 178 ANDOVER 3. The Commission orders that all work shall be performed in accordance with the following conditions and with the Notice of Intent referenced above.To the extent that the following conditions modify or differ from the plans,specifications,or other proposals submitted with the Notice of Intent,the conditions shall control. . i ! The special conditions relating to municipal ordinance or bylaw are as follows: SEE ATTACHED. Page 8 of 10*ELECTRONIC COPY i I Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5- Order of Conditions eDEP Transaction#:395986 Massachusetts Wetlands Protection Act M.G.L.c. 131, §40 City/Town-NORTH ANDOVER E. Signatures This Order is valid for three years from the date of issuance,unless otherwise specified /,I 3J/1 pursuant to General Condition#4.If this is an Amended Order of Conditions,the Amended 1.Date o Original Order Order expires on the same date as the original Order of Conditions. Please indicate the number of members who will sign this form.This Order must be signed by 1 a majority of the Conservation Commission. 2.Number of Signers The Order must be mailed by certified mail(return receipt requested)or hand delivered to the applicant.A copy also must be mailed or hand delivered at the same time to the appropriate Department of Environmental Protection Regional Office,if not filing electronically,and the property owner,if different from applicant. Signatures: r- hand delivery on Y D' � y certified mail,return receipt requested,on Date Date F. Appeals The applicant,the owner,any person aggrieved by this Order,any owner of land abutting the land subject to this Order,or any ten residents of the city or town in which such land is located,are hereby notified of their right to request the appropriate MassDEP Regional Office to issue a Superseding Order of Conditions.The request must be made by certified mail or hand delivery to the Department,with the appropriate filing fee and a completed Request for Departmental Action Fee Transmittal Form,as provided in 310 CMR 10.03(7)within ten business days from the date of issuance of this Order.A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant,if he/she is not the appellant. Any appellants seeking to appeal the Department's Superseding Order associated with this appeal will be required to demonstrate prior participation in the review of this project.Previous participation in the permit proceeding means the submission of written information to the Conservation Commission prior to the close of the public hearing,requesting a Superseding Order,or providing written information to the Department prior to issuance of a Superseding Order. The request shall state clearly and concisely the objections to the Order which is being appealed and how the Order does not contribute to the protection of the interests identified in the Massachusetts Wetlands Protection Act(M.G.L.c.131,§40),and is inconsistent with the wetlands regulations(3 10 CMR 10.00).To the extent that the Order is based on a municipal ordinance or bylaw, and not on the Massachusetts Wetlands Protection Act or regulations,the Department has no appellate jurisdiction. Page 9 of 10*ELECTRONIC COPY Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection-Wetlands MassDEP File#:242-1521 WPA Form 5 -Order of Conditions eDEP Transaction#:395986 Massachusetts Wetlands Protection Act M.G.L.c. 131,§40 CitylIown:NORTHANDOVER G. Recording Information This Order of Conditions must be recorded in the Registry of Deeds or the Land Court for the district in which the land is located, within the chain of title of the affected property.In the case of recorded land,the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land subject to the Order.In the case of registered land,this Order shall also be noted on the Land Court Certificate of Title of the owner of the land subject to the Order of Conditions.The recording information on this page shall be submitted to the Conservation Commission listed below. NORTH ANDOVER Conservation Commission Detach on dotted line,have stamped by the Registry of Deeds and submit to the Conservation Commission. .......................................................................................................................................................................................................... To: NORTH ANDOVER Conservation Commission Please be advised that the Order of Conditions for the Project at: 12 MASSACHUSETTS AVENUE 242-1521 Project Location MassDEP File Number Has been recorded at the Registry of Deeds of County Book Page for. Property Owner STEVEN CHARRON and has been noted in the chain of title of the affected property in: Book Page In accordance with the Order of Conditions issued on: Date If recorded land,the instrument number identifying this transaction is: Instrument Number If registered land,the document number identifying this transaction is: Document Number Signature of Applicant Rev.4/1/2010 Page 10 of 10* ELECTRONIC COPY DEP FILE #242 -1521 Therefore, the North Andover Conservation Commission(hereafter the "NACC") hereby finds that the following conditions are necessary,in accordance with the Performance Standards set forth in the State Regulations, the local ByLaw and Regulations, to protect those interests noted above. The NACC orders that all work shall be performed in accordance with said conditions and with the Notice of Intent referenced below. To the extent that the following conditions modify or differ from the plans, specifications or other proposals submitted with the Notice of Intent the conditions shall control. GENERAL CONDITIONS 20. Thero osed work includes: Replacement of underground fuel storage P P p gr g tanks, gasoline dispensers and concrete pads over the tanks and for the refueling area. Stormwater management improvements are also proposed including installation of a roof drain infiltration system(drywell and trench) for the existing building and canopy, an oil/gas sediment trap with emergency spill containment capability and emergency shut-off. 21. The work shall conform to the following(except as ( p noted in the remainder of this document where revisions may be required): Notice of Intent filed by: Joseph D. Peznola, P.E. Hancock Associates 315 Elm Street Marlborough, MA 01752 Site Plans prepared by: Hancock Associates Title: Permit Site Plan for Notice of Intent Date: 5/20/11 Last Revised:5/31/11 Stamped by: Joseph D. Peznola, P.E. Other Plans: Detail Sheets Title: Dry Well:&Infiltration Trench (2 sheets) Date: 8-8-11 Other Record Documents: Long Term Stormwater Operation&Maintenance Plan 22. The term"Applicant" as used in this Order of Conditions shall refer to the owner, any successor in interest or successor in control of the property referenced in the Notice of Intent, supporting documents and this Order of Conditions. The NACC shall be notified in writing within 30 days of all transfers of title of any portion of property that takes place prior to the issuance of a Certificate of Compliance. CAWinword\00C\boi1er1.doc 1 NACC 6/23/2011 DEP FILE it 242 -1521 23. The conditions of this decision shall apply to, and be binding upon, the applicant, owner, its employees and all successors and assigns in interest or control. These obligations shall be expressed in covenants in all deeds to succeeding owners of portions of the property. 24. Failure to comply with all conditions stated herein, and with all related statutes and other regulatory measures, shall be deemed cause to revoke or modify this Order. 25. This Order does not grant any property rights or any exclusive privileges; it does not authorize any injury to private property or invasion of property rights. However,the NACC, agent of the NACC or the Department of Environmental Protection(DEP) reserves the right to enter and inspect the property at all reasonable times until a Certificate of Compliance is issued, to evaluate compliance with this Order of Conditions, the Act(310 CMR 10.00), the North Andover Wetland ByLaw and Regulations,and may require any information, measurements, photographs, observations, and/or materials, or may require the submittal of an data or information deemed necessary b t Y q Y Y Y he NACC for that evaluation. Further,work shall be halted on the site if the NACC, agent or DEP determines that any of the work is not in compliance with this Order of Conditions. Work shall not resume until the NACC is satisfied that the work will comply and has so notified the applicant in writing. 26. This Order does not relieve the permittee or any other person of the necessity of complying with all other applicable federal, state or local statutes, ordinances,by-laws or regulations. 27. The work authorized hereunder shall be completed within three o'er from the date of this order. 28. This Order may be extended by the issuing authority for one but not more than two periods of up to one year each upon application to the issuing authority at least thirty days (30) prior to the expiration date of the Order (Refer to Section 8.3 (p.37) of the North Andover Wetland Regulations). 29. The NACC reserves the right to amend this Order of Conditions after a legally advertised public hearing if plans or circumstances are changed or if new conditions or information so warrant. 30. Where the Department of Environmental Protection(DEP) is requested to make a determination and to issue a Superseding Order, the Conservation Commission shall be a party to all agency proceedings and hearings before the Department. 31. This Order of Conditions is issued in addition to those issued under File No. 242-822. A Certificate of Compliance was issued on February 5, 1997. CAWinword\00C\boi1er1.doc 2 NACC 6/23/2011 DEP FILE #242 -1521 32. Any future project which proposes a wetland crossing in order to access certain portions of the property will not be qualified as a limited project roadway under 310 CMR 10.53(e). 33. The following wetland resource areas are affected by the proposed work: Buffer Zone to Bank and Riverfront Area. These resource areas are significant to the interests of the Act and Town ByLaw as noted above and therein. The applicant has not attempted to overcome the presumption of significance of these resource areas to the identified interests. 34. The NACC agrees with the applicant's delineation of the wetland resource areas on the site as shown on the plans dated referenced herein. 35. The NACC finds that the intensive use of the upland areas and buffer zone proposed on this site will cause further alteration of the wetland resource areas. In order to prevent any alteration of wetland resource areas a twenty five foot (25') No-Disturbance Zone and a fifty foot 50') No-Construction Zone shall be established from the edge of the adjacent wetland resource area. The Conservation Administrator and/or other agents of the NACC do not have the authority to waive these setbacks as established under the local bylaw. No disturbance of existing grade,'soils or vegetation is permitted in the No- Disturbance zone. 36. This document shall be included in all construction contracts, subcontracts, and specifications dealing with the work proposed and shall supersede any conflicting contract requirements. The applicant shall assure that all contractors, subcontractors, and other personnel performing the permitting work are fully aware of the permits terms and conditions. Thereafter, the contractor will be held jointly liable for any violation of this Order resulting from failure to comply with its conditions. 37. The owners of the project and their successors in title agree that the Order does not in itself impose upon the Town any responsibility to maintain the proposed drainage system and that said Town shall not be liable for any damage in the event of failure. By acceptance of this Order, the owners agree to indemnify and hold harmless to the Town and its residents for any damage attributable to alterations undertaken on this property pursuant to the Order. Issuance of these Conditions does not in any way imply or certify that the site or downstream areas will not be subject to flooding, storm damage or any other form of water damage. Maintenance of the drainage system, if accepted by the Town as part of a public way,becomes the responsibility of the Town. PRIOR TO CONSTRUCTION 38. No work shall be undertaken until all administrative appeal periods from this Order have elapsed or, if such an appeal has been filed, until all proceedings before the Department or Court have been completed. CAWinword\00C\boi1er1.doc 3 NACC 6/23/2011 DEP FILE#242 -1521 39. This Order shall be recorded by the applicant at the Registry of Deeds immediately after the expiration of all appeal periods. No work shall be undertaken until the Final Order has been recorded in the Registry of Deeds or the Land Court for the district in which the land is located,within the chain of title of the affected property. In the case of recorded land,the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land upon which the proposed work is to be done. In the case of registered land, the Final Order shall also be noted on the Land Court Certificate of Title of the owner of the land upon which the proposed work is to be done. The recording information shall be submitted to the North Andover Conservation Commission on the form at the end of this Order prior to commencement of the work. Any Order not recorded by the applicant before work commences may be recorded by the NACC at the applicant's expense. 40. A sign shall be displayed at the site not less than two square feet or more than three square feet in size bearing the words "Massachusetts DEP, File Number 242-1521." 41. Any changes in the submitted plans caused by the applicant, another Board's decision or resulting from this Order of Conditions must be submitted to the NACC for approval prior to implementation. If the NACC finds said changes to be significant, the NACC will call for another public hearing(at the expense of the applicant). Within 21 days of the close of said public hearing the NACC will issue an amended or new Order of Conditions. Any errors found in the plans or information submitted by the applicant shall be considered as changes. No work shall begin on a project until written approval has been granted by the NACC. 42. It is the responsibility of the applicant, owner, and/or successor(s) to ensure that all conditions of this Order of Conditions are complied with. The project engineer and contractors are to be provided with a copy of this Order of Conditions and referenced documents before commencement of construction. 43. Prior to any work commencing on-site, the applicant shall submit to the NACC for approval, a detailed sequence of construction, including the construction of compensation and retention areas, installation of sedimentation/erosion control devices and re- vegetation to be completed before other work begins on-site. 44. Wetland flagging shall be checked prior to start of construction and shall be re-established where missing. All wetland flagging shall remain visible and enumerated per the approved plan(s) throughout the life of the project and until a Certificate of Compliance is issued so that erosion control measures can be properly placed and wetland impacts can be monitored. The proposed limit of work shall be shall be clearly marked with erosion controls or temporary fencing and shall be confirmed by the NACC. Such barriers shall be checked and replaced as necessary and shall be maintained until all construction is complete. Workers should be informed that no use of machinery, storage of machinery or materials, stockpiling of soil, or construction activity is to occur beyond this line at any time. C:\Winword\00C\boi1er1.doc 4 NACC 6/23/2011 I DEP FILE #242 -1521 45. Straw wattles backed by trenched siltation fence shall be placed between all construction areas and wetlands. The erosion control barrier will be properly installed and placed as shown on the plans approved-and referenced herein and shall be inspected and approved by the NACC or its agent prior to the start of construction and shall remain intact until all disturbed areas have been permanently stabilized to prevent erosion. Silt sacks shall be placed in all catch basins to prevent erosion into the stormwater system. All erosion prevention and sedimentation protection measures found necessary during construction shall be implemented at the direction of the NACC or its agent. The NACC reserves the right to impose additional conditions on portions of this project to mitigate any impacts which could result from site erosion, or any noticeable degradation of surface water quality discharging from the site. For example, installation of erosion control measures may be required in areas not shown on the plan(s) referenced in this Order of Conditions. Should such installation be required by the NACC,they shall be installed within 48 hours of the Commissions request. 46. The applicant shall have on hand at the start of any soil disturbance,removal or stockpiling, a minimum of 10 hay bales and sufficient stakes for staking these bales or equivalent length of straw wattle. Said bales/wattles shall be used only for the control of emergency erosion problems and shall not be used for the normal control of erosion. 47. A check payable to the Town of North Andover shall be provided in the amount of$5,000 ($2,000 tank work, $2,000 stormwater work, $1,000 refueling/canopy area) which shall be in all respects satisfactory to Town Counsel, Town Treasurer, and the NACC, and shall be posted with the North Andover Town Treasurer through the NACC before commencement of work. Said deposit of money shall be conditioned on the completion of all conditions hereof, shall be signed by a party or parties satisfactory to the NACC, and Town Counsel, and shall be released after completion of the project, provided that provisions, satisfactory to the NACC, have been made for performance of any conditions which are of continuing nature. The applicant may propose a monetary release schedule keyed to completion of specific portions of the project for the NACC's review and approval. This condition is issued under the authority of the local ByLaw. 48. The applicant shall designate a Wetland Scientist (or other environmental professional as approved by the NACC or its agent) as an"Erosion Control Monitor' to oversee any emergency placement of controls and regular inspection or replacement of sedimentation control devices. The name and phone number of the erosion control monitor must be provided to the NACC in the event that this person has to be contacted, due to an emergency at the site, during any 24-hour period, including weekends. Proof of the retained monitor must be submitted to the Conservation Department on letterhead by the retained consulting firm. This person shall be given the authority to stop construction for erosion control purposes. The erosion control monitor will be required to inspect all such devices and oversee cleaning and the proper disposal of waste products. Cleaning shall include removal of any entrapped silt. C:\Winword\00C\boi1er1.doc 5 NACC 6/23/2011 DEP FILE #242 -1521 49. At least once during each week in which construction activities occurs on-site and for as long thereafter as ground remains unstabilized,the applicant shall submit a written report, including photographs of the site, from the "Erosion Control Monitor" to the NACC certifying that, to the best of his/her knowledge and belief based on a careful site inspection, all work is being performed in compliance with this Order of Conditions and that approved setbacks are being adhered to. The erosion control monitor must visually inspect all sedimentation/erosion control measures and assume responsibility for their maintenance on a weekly basis and that they are functioning as intended. In addition, all wetland resource areas must be visually inspected for siltation, turbidity, and/or other water quality impacts. 50. Prior to construction, the applicant shall permanently mark the edge of the fence line with seven (7) signs or markers spaced evenly every 25-feet incorporating the following text: "Protected Wetland Resource Area". This will designate their sensitivity and assure no further inadvertent encroachment into the wetland. These permanent markers are subject to review and approval by the NACC. The applicant shall instruct all agents to explain these markers to buyers/lessees/landscapers and all persons taking over the property from the applicant. These markers shall remain posted and be replaced as necessary in perpetuity. '51. The applicant and/or the legal owner of that portion of land upon which these Orders of Conditions have been placed shall provide to the NACC prior to transferring, or assigning any portion of said land to another party, subject to said Orders of Conditions, the "Compliance Certification Form Affidavit" attached via"Appendix A" signed under the pains and penalties of perjury, stating that said applicant and/or owner has read these Orders of Conditions and is in compliance with each and every condition. This document shall apply to each of the conditions referenced herein and shall be provided to the Conservation Department at least five (5) business days prior to the closing of said land transaction. 52. Once these above mentioned pre-construction requirements are complete,the applicant shall contact the Conservation Office prior to site preparation or construction and shall arrange an on-site conference with an NACC representative, the contractor,the engineer, wetland scientist and the applicant to ensure that all of the Conditions of this Order are understood. This Order shall be included in all construction contracts, subcontracts, and specifications dealing with the work proposed and shall supersede any conflicting contract requirements. The applicant shall assure that all contractors, subcontractors and other personnel performing the permitted work are fully aware of the permit's terms and conditions. Thereafter, the contractor will be held jointly liable for any violation of this Order of Conditions resulting from failure to comply with its conditions. The applicant or contractor shall notify the NACC in writing of the identity of the on-site construction supervisor hired to coordinate construction and to ensure compliance with this Order. A reasonable period of time shall be provided as notice of the pre-construction meeting (e.g. 72 hours). CAWinword\00C\boi1er1.doc 6 NACC 6/23/2011 DEP FILE 4 242-1521 STORMWATER MANAGEMENT CONDITIONS 53. All construction and post-construction stormwater management systems shall be constructed in accordance with the approved construction sequence, supporting documents and plans submitted with the Notice of Intent, this Order of Conditions, and the approved Long Term Operation and Maintenance Plan attached herein. 54. The stormceptor shall contain an oil/gasoline trap and emergency spill containment capability. This shall be a continuing condition of this order, even after a Certificate of Compliance is issued, that the oil/gasoline trap and spill containment be maintained. All stormwater structures shall be free of all accumulated silt and debris before Compliance is issued and the owner or his/her agent shall so specify in the request for Compliance. 55. All stormwater best management practices shall be maintained as specified in the Long Term Operation and Maintenance Plan submitted with the Notice of Intent and incorporated in the Order of Conditions. The approved Long Term Operation and Maintenance Plan is fully binding upon the applicant and/or owners, successors, agents, associations,heirs and assigns and must be adhered to in perpetuity. 56. Evidence of maintenance of the stormwater management system shall be provided to the NACC on an annual basis by a Registered Professional Civil Engineer certifying that the drainage system is working as designed 'and shall include any maintenance invoices for cleaning and repairs. The first report shall be submitted to the NACC as soon as the first stormwater structure goes on-line and reports must continue to be submitted until a Certificate of Compliance is issued. Compliance with the designed stormwater management system and associated stormwater management conditions shall be satisfied prior to the issuance of a Certificate of Compliance. 57. There shall be no increase in the post development discharges from the storm drainage system or any other changes in post development conditions that alter the post development watershed boundaries as currently depicted in the Notice of Intent and approved by this Order of Conditions. 58. Water quality down gradient of BVW shall not differ significantly following completion of the project from the pre-development conditions. There shall be no sedimentation into wetlands or water bodies from discharge pipes or surface runoff leaving the site. 59. Prior to the issuance of the Certificate of Compliance,the applicant shall be responsible for cleaning all stormwater structures,in accordance with the approved Long Term Operation and Maintenance Plan attached herein and the associated stormwater management conditions mandated herein. 60. The applicants, owners, and their successors and assignees, shall maintain all culverts, collections basins, traps, outlet structures, subsurface storage areas, and other elements of CAWinword\OOC\boilerl.doc 7 NACC 6/23/2011 DEP FILE#242 -1521 the drainage system, unless put into an easement to the Town of North Andover, in order to avoid blockages and siltation which might cause failure of the system and/or detrimental impacts to on-site or off-site resource areas, and shall maintain the integrity of vegetative cover on the site. DURING CONSTRUCTION 61. Upon beginning work,the applicant shall submit written progress reports every week detailing what work has been done in or near resource areas, and what work is anticipated to be done over the next period. This will update the construction sequence. 62. It shall be a continuing condition of this order, even after a Certificate of Compliance is issued,that the oil/gasoline traps and the emergency spill containment capability of the stormcepter unit be maintained. All catch basins/stormwater structures shall be free of all accumulated silt and debris before a Compliance is issued and the owner or his/her agent shall so specify in the request for Compliance. 63. No dewatering activities are anticipated as part of this project. If emergency de-watering requirements arise,the applicant shall submit a contingency plan to the Commission for approval, which provides for the pumped water to be appropriately treated (if contaminated) and contained. No pumped water shall be discharged into a resource area or stormwater management structure without the prior approval of the Conservation Commission. 64. Any fill used in connection with this project shall be clean fill, containing no trash,refuse, rubbish or debris, including but not limited to lumber,bricks, plaster,wire, lath, paper, cardboard; pipe, tires, ashes, refrigerators,motor vehicles or parts on any of the foregoing. 65. All exposed soil finish grade surfaces shall be immediately landscaped and stabilized, or loamed, seeded and mulched,with a layer of mulch hay. All disturbed areas must be graded, loamed and seeded prior to November 1St of each year. Outside of the growing season, exposed soil finish grade surfaces shall be stabilized with a layer of mulch hay until climate conditions allow for seeding. During construction, any area of exposed soils that will be left idle for more than 30 days shall be stabilized with a layer of mulch hay or other means approved by the NACC. 66. No re-grading in the buffer zone shall have a slope steeper than 2:1 (horizontal: vertical). Slopes of steeper grade shall be rip-rapped to provide permanent stabilization. .67. Contaminated soil shall be stockpiled separately from other stockpiled materials and shall be surrounded by erosion controls and covered at all times. Soils shall be handled as CAWinword\00C\boi1er1.doc 8 NACC 6/23/2011 DEP FILE #242 -1521 directed by the site LSP. All soils shall be stockpiled in the location shown on the approved plan referenced herein. 68. Construction equipment/vehicles shall not be staged overnight within 100 feet of a wetland resource area 69. Washings from concrete trucks, or surplus concrete, shall not be directed to, any drainage system, or wetland resource area. If concrete truck washing is required an area for this activity shall be designated and approved by the Conservation Department. 70. All waste generated by, or associated with, the construction activity shall be contained within the limit of work, and away from any wetland resource area. There shall be no burying of spent construction materials or disposal of waste on the site by any other means. The applicant shall maintain dumpsters (or other suitable means) at the site for the storage and removal of such spent construction materials off-site. However, no trash dumpsters will be allowed within 50' of areas subject to protection under the Act or local ByLaw. 71. Accepted engineering and construction standards and procedures shall be followed in the completion of the project. 72. During and after work on this project,there shall be no discharge or spillage of fuel, or other pollutants into any wetland resource area. If there is a spill or discharge of any pollutant during any phase of construction the NACC shall be notified by the applicant within one (1) business day. No construction vehicles are to be stored within 100 feet of wetland resource areas, and no vehicle refueling, equipment lubrication, or maintenance is to be done within 100 feet of a resource area. AFTER CONSTRUCTION 73. Fertilizers utilized for landscaping and lawn care shall be slow release,low-nitrogen types (< 5%), and shall not be used within 25 feet of a resource area. Pesticides and herbicides shall.not be used within 100 feet of a wetland resource area. This condition shall survive this Order of Conditions and shall run with the title of the property. This condition is issued under the authority of the Town's Wetland Protection ByLaw and shall remain in perpetuity. 74. No road salt, sodium chloride, or other de-icing chemicals shall be used on paved surfaces, and any arrangement for snow removal shall so stipulate due to the importance of the site and wetlands. Permanent signs (two of each) designating"No-Salt Zone' and No-Snow Stockpiling Zones shall be displayed on the fence located between the Shawsheen River and the developed portion of the site. C:\Winword\00C\boi1er1.doc 9 NACC 6/23/2011 DEP FILE #242 -1521 75. Upon completion of construction and grading,all disturbed areas located outside resource areas shall be stabilized permanently against erosion. This shall be done by loaming and seeding according to NRCS standards. Stabilization will be considered complete once full vegetative cover has been achieved. 76. Upon approved site stabilization by Conservation staff, the erosion controls shall be removed and properly disposed of and all exposed unvegetated areas shall be seeded. 77. Upon completion of the project the applicant shall submit the following to the Conservation Commission as part of a request for a Certificate of Compliance: a. WPA Form 8A - "Request for a Certificate of Compliance." b. A letter from the applicant requesting a Certificate of Compliance. c. The name and address of the current landowner. d. Signed statements from the individual property owners shall be submitted with the request for a Certificate of Compliance indicating that they read and understood the recorded Order of Conditions prior to purchasing their property. e. The name and address of the individual/trust or corporation to whom the compliance is to be granted. f. The street address and assessor's map/parcel number for the project. g. The DEP file number. h. A written statement from a Registered Professional Civil Engineer (and/or Registered Professional Land Surveyor) of the Commonwealth certifying that the work has been conducted as shown on the plan(s) and documents referenced above, and as conditioned by the Commission. i. An"As-Built" plan prepared and signed and stamped by a Registered Professional Civil Engineer (and/or Registered Professional Land Surveyor) of the Commonwealth,for the public record. This plan will include: ➢ "As-Built" post-development elevations of all drainage &stormwater management structures constructed within 100 feet of any wetland resource area. NOTE: If portions of the stormwater systems exist partially within the Buffer Zone than the entire structure must be depicted to accurately verify compliance. ➢ "As-Built" post-development elevations and grades of all filled or altered wetland resource areas including the encompassing buffer zone which is regulated as a resource area under the local Wetland Protection Bylaw. ➢ Distances from structures to wetland resource areas. Structures include (but are not limited to) septic systems, additions,fences, sheds, stone walls, pools, retaining walls, subsurface utilities and decks. ➢ A line showing the limit of work and the extent of existing erosion control devices. "Work" includes qU disturbance of soils or vegetation. CAWinword\00C\boi1er1.doc 10 NACC 6/23/2011 DEP FILE#242 -1521 ➢ Location of all subsurface utilities entering the property. 78. The following special conditions shall survive the issuance of a Certificate of Compliance (COC) for this project: ➢ 25' No-Disturbance Zone and a 50' No-Construction Zone shall be established from the edge of adjacent wetland resource areas except in those locations approved under DEP# 242-1521. Future work within 100' of existing wetland resource areas or in the 200' Riverfront Area will require a separate filing with the NACC The Conservation Administrator and/or other agents of the NACC do not have the authority to waive these setbacks as established under the local ByLaw; ➢ Resource Area Markers (Condition#50); - ➢ Maintenance of catch basins (Condition#54) ➢ Long Term Stormwater Operation& Maintenance Plan (attached)(Condition#55); ➢ Discharge or spillage of pollutants (Condition# 72); ➢ Limitations on the use of fertilizers,herbicides,road salts, de-icing compounds and pesticides (Conditions #73 & 74). li • r C:\Winword\00C\boi1er1.doc 11 NACC 6/23/2011 DEP FILE#242 -1521 APPENDIX A-AFFIDAVIT I, on oath do hereby depose and state: (authorized agent applicant and/or current owner) (PLEASE CHECK AT LEAST ONE BLOCK) 1. I am the of (position with applicant) (applicant name or company name) the applicant upon whom Order of Conditions have been placed upon by (DEP or NACC number) the North Andover Conservation Commission. &/or 2. I am the of (position with owner) (owner name) the owner upon whose land Order of Conditions have been placed up by (DEP or NACC number) the North Andover Conservation Commission. & 3. I hereby affirm and acknowledge that I have received said Order of Conditions and have read the same and understand each (DEP File#) and every condition which has been set forth in said Order of Conditions. & 4. I hereby affirm and acknowledge that on this day of 19 I inspected said property together with any and all improvements which have been made to the same and hereby certify that each and every condition set forth in Order of Conditions are presently in compliance. (DEP File#) & 5. I hereby affirm and acknowledge that this document will be relied upon by the North Andover Conservation Commission as well as any potential buyers of said property which is subject to said Order of Conditions (DEP File#) Signed under the pains and penalties of perjury this day of 19 (Signature-authorized agent of applicant or owner) C.\Winword\00C\boi1er1.doc 12 NACC 6/23/2011 LONG TERM STORMWATER OPERATION & MAINTENANCE PLAN Stormwater management system owner: Global Companies LLC The party or parties responsible for operation and maintenance: Global Companies, LLC The owner of the system shall be the landowner of the property. The Order of Conditions and Certificate of Compliance should be written to allow for routine maintenance during construction and post-development phases of the project as defined in the O&M Plan.A continuing condition in the Certificate of Compliance will ensure that maintenance can be performed without triggering further filings under the Wetlands Protection Act. Construction Phase Operation and Maintenance 1. Temporary erosion control measures will be inspected daily and repaired and or replaced as necessary. As catch basins are made able to accept stormwater runoff a silt sack® shall be installed. 2. Catch basins will be inspected weekly and cleaned as necessary. Silt Sacks® shall be removed, cleaned and replaced as necessary. 3. Paved areas will be swept as needed and accumulations of sand/silt due to construction activities shall be removed as soon as the activity is terminated. 4. Oil/Gas Sediment Separator(once installed)shall be inspected weekly and just after a significant rain event and maintained as described in the Final Site Operation and Maintenance Plan. 5. The owner shall keep a log of operations during the construction phase. This log will be used in further defining the Final Site Operation and Maintenance Plan. Street Sweeping Street sweeping efforts shall be performed twice annually once during the late spring, the period immediately following winter snowmelt, when road sand and other accumulated sediment, and once in early fall seasons. Stormceptor Unit (Information gathered at Stormceptor.com) Maintenance Procedures General Stormceptor®should be inspected and maintained regularly. Stormceptor®units should be inspected every six months and cleaned when the sediment level reaches 15%of total storage volume. Refer to Stormceptor®Procedures for details. If regular inspections are not conducted, Stormceptor®units should be cleaned once a year. Stormceptor®units should also be inspected following a spill event. All oil captured by the Stormceptor® should be removed. Inspection and maintainence should be part of the Standard Operating Procedure. Safety Do not enter the Stormceptor®treatment chamber unless properly trained, equipped and qualified to enter a confined space as identified by local Occupational Safety and Health Regulations. Watch for and avoid contact with overhead power lines when inspecting the unit with long sampling devices(e.g. Sludge Judge®) Stormceptoro is designed so inspection of the unit can be preformed from grade(i.e. inspect for obstructions, etc.) Qualified personal may enter the upper by-pass chamber and use the insert as a platform to remove obstructions, sewer flushes, or camera surveys. Be aware that the insert may be slippery. Be aware that some units do not have a safety grate over the outlet riser pipe. Procedure Maintenance is performed using a vacuum truck. A catch basin vacuum truck is not recommended for maintenance.Remove cover from unit from grade,lower hose through by-pass chamber and into treatment chamber. Vacuum trucks are able to remove material from a maximum distance of 32 feet below grade; additional charges may apply if installation is deeper. Roof Drain Infiltration Areas The infiltration drywell and trench shall be inspected after every major storm in the first few months after construction to ensure proper stabilization and function. Thereafter,the system shall be inspected once per year. Water depth in the observation ports should be measured at 0,24 and 48-hour intervals after a storm. Clearance rates are calculated by dividing the drop in water level (inches)by the elapsed time(hr). The clearance rates shall be logged and compared from year to year. The system should fully drain within 72 hours of the storm. it i L