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64-576 - 50 FORT AVENUE - CONSERVATION COMMISSION SFy, s�—�-�� 1�4 F:7 i i:A rr R.� l NOI Status Sheet u Address: ��'^S� DEP #: j�/ �N Application Type:/J/� lsDate S��i�tty: -4. Contact Name: RAS/ ^S Phone: Proposed activity: p Aplication Complete orrect Fee Received ,Abutters List Requested -Received ,,tigal Ad Sent kLe al Ad Confirmed -Nine Mded to Agenda �da to Applicant /Agg.ent Comments to Commission ,WEP Comments Hearing Opened: � �� Continued: Site Visit: �cbutters Notice Con armed /Permit Sent to Applicant and DEP C-Confirmation of Delivery ,-Expiration date added to calendar Added to database Applicant Recorded OoC with Registry Preconstruction Meeting: 8/ ?0/ Certificate of Compliance Sent to Applicant and DEP Confirmation of Delivery Applicant Recorded CoC with Registry Notes: HACON COMM\Administmtive\project status sheet\NOI status sheet 20 CL-t2-27.doc CITY OF SALEM • \MINB y; ' CONSERVATION COMMISSION SITE VISIT FORM PROJECT LOCATION: 5b FWt ft 91>)DATE OF SITE VISIT ->, PROJECT PROPONENT: I1 DEP FILE NUMBER: rA -� � PROPOSED WORK: IN ATTENDANCE: ` Commission Members/Agent: QQ Abutters: Applicant/Property Owner/Representative: ^ SITE VISIT:PU RPOSE: ShTE�VI;IT;DOCUMENTATION: LI Photos ❑ Site Map ❑Other: OBSERVATIONS:' Take into account relevant aspects or features such as: natural or piped drainage or obvious pollution; topography; existing vegetation; possible alternative sites; signs of wildlife, possible vernal pools, raze species habitat; landmarks; recent or historical disturbances; proximity to other water bodies or drainage areas; adjacent land uses. Gs� 'Y\ lac D� *V efC&2k4 P ✓�l conn c�t�?L be i W dna Ins c RECOMMENDATIONS: I �G- ECEIV SEP 18 2017 SERAFINI , DARLING & CORRENTI , LLP DEPT. OFPLANNING & ATTORNEY'S AT LAW COMMUNITY DEVELOPMENT 63 FEDERAL STREET SALEM, MASSACHUSETTS 01970 JOHN R. SERAFINI. SR. TELEPHONE JOHN E. DARLING 978-744-0212 JOSEPH C. CORRENTI FACSIMILE KRISTIN E. KOLICK 978-741-4683 September 14 , 2017 Ashley Green Conservation Agent City of Salem Conservation Commission City Hall Annex 120 Washington Street Salem, Massachusetts 01970 Re: Extension Permit Order of Conditions DEP File No. 64-576 South Essex Sewerage District Contract No. 11-3 : Combined Heat and Power Facility Dear Ms . Green: The above Extension Permit was recorded with the Essex South District Registry of Deeds on September 14 , 2017 in Book 36174 , Page 122 . An attested copy of the Permit is enclosed along with the recording confirmation page for the Commission' s records . Sincerely, John E. Darling General Counsel for the South Essex Sewerage District Cc : David L. Michelsen, P.E. JED/rsr Enclosures ff f LlMassachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: WPA Form 7 — Extension Permit for Orders of Conditions 64-576 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP r A. General Information Important: IIIIIIIIIII�IIil��ll�llllllll�llllllllllllllll When fining out 1. Applicant: forms on the SO,ESSEX #33 806114 P9;122 computer, use South Essex Sewerage District(SESD) 08/14/2017 08:45 ExTN Pg 1/1 Name — only the tab key to move 50 Fort Avenue your cursor- Mailing Address do not use the Salem MA 01970 return key. City/Town - State Zip Code - �I I I 2. Property Owner(if different): Name renin Mailing Address City/Town State Zip Code B. Authorization The Order of Conditions (or Extension Permit) issued to the applicant or property owner listed above on: 9/26/2014 Issued by: Salem DateConservation Commission for work at: 50 Fort Avenue 42 96 Street Address Assessor's Map/Plat Number Parcel/Lot Number recorded at the Registry of Deeds for: South Essex �� 8 g I� County Book Page Certificate(if registered land) is hereby extended until: 2(¢ Z�1 Date Date the Order was last extended(if applicable) This date can be no more than 3 years from the expiration date of the Order of Conditions or the latest extension. Only unexpired Orders of Conditions or Extension may be extended. This Extension Permit must be signed by a majority of the Conservation Commission and a copy sent to the applicant and the ppropriate DEP Regional Office (htt ://www.mass. o eea/a encies/massde /about/contacts/find-the-massde -re ional-office-for- aur-ci -or- town.html). Signatures: 1 lle 1l- Date L> wparorm7.doc•rev.5/29/2014 Page 1 of 2 r 4 CONIMON''WEALTH OF MASSACHUSETTS ESSEX REGISTRY OF DEEDS, S0. DIST., SALEM, 2A MASS SSEX SS '5'epV- /`I A TRUE COPY OF RECORD: f?F�� 3( /7y / Z 2-- ATTEST 1 ATER Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File"umber: WPA Form 7 — Extension Permit for Orders of Conditions 64-576 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP C. Recording Confirmation The applicant shall record this document in accordance with General Condition 8 of the Order of Conditions(see below), complete the form attached to this Extension Permit, have it stamped by the Registry of Deeds, and return it to the Conservation Commission. Note: General Condition 8 of the Order of Conditions requires the applicant, prior to commencement of work, to record the final Order(or in this case, the Extension Permit for the Order of Conditions) 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, it shall be noted in the Registry's Granter 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, it shall also be noted on the Land Court Certificate of Title of the owner of the land upon which the proposed work is done. Detach this page and submit it to the Conservation Commission prior to the expiration of the Order of Conditions subject to this Extension Permit. To: Salem Conservation Commission - Please be advised that the Extension Permit to the Order of Conditions for the project at: 50 Fort Avenue 64-576 Project Location DEP File Number has been recorded at the Registry of Deeds of: Essex County for: South Essex Sewerage District _ Property Owner and has been noted in the chain of title of the affected property in accordance with General Condition 8 of the original Order of Conditions on: September 14, 2017 36174 122 Date Book Page If recorded land the instrument number which identifies this transaction is: 33 Instrument Number If registered land, the document number which identifies this transaction is: - Document Number / Signature of Applicant John E. Darling, General Counsel - South Essex Sewerage District w aformTdoc•rev.5/29/2014 Page 2 of 2 s - FIE ( • ;� CITY OF SALEM 0 , CONSERVATION COMMISSION August 16, 2017 South Essex Sewerage District c/o David Michelsen 50 Fort Avenue Salem, MA 01970 Re: Extension Permit for Order of Conditions—DEP#64-576—SESD Combined Heat and Power Facility Dear Mr. Michelsen: Enclosed, please find the Extension Permit for the above-referenced Order of Conditions. The attached Extension Permit must be recorded at the South Essex County Registry of Deeds. Once recorded, please return a copy of Page 2 of the Extension Permit, which will indicate to the Commission that the document has been recorded. If you have any further questions, please feel free to contact me at 978-619-5685. Sinc ely, Ashley Green Conservation Agent Enclosure CC: DEP Northeast Regional Office Massachusetts Department of Environmental Protection DEP File Number. Bureau of Resource Protection -Wetlands WPA Form 7 — Extension Permit for Orders of Conditions 64-576 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP A. General Information Important: When filling out 1. Applicant: forms on the South Essex Sewerage District(SESD) computer, use Name only the tab key to move 50 Fort Avenue your cursor- Mailing Address do not use the Salem MA 01970 return kekey. City/Town State Zip Code 2. Property Owner(if different): Name Mailing Address City/rown State Zip Code B. Authorization The Order of Conditions (or Extension Permit)issued to the applicant or property owner listed above on: 9/26/2014 Issued by: Salem Conservation Commission for work at: 50 Fort Avenue 42 98 Street Address Assessors Map/Plat Number Parcel/Lot Number recorded at the Registry of Deeds for: South Essex Fill County Book Page Certificate(if registered land) 3 2� Zo1 is hereby extended until: Date Date the Order was last extended(if applicable) This date can be no more than 3 years from the expiration date of the Order of Conditions or the latest extension. Only unexpired Orders of Conditions or Extension may be extended. This Extension Permit must be signed by a majority of the Conservation Commission and a copy sent to the applicant and theppropriate DEP Regional Office (htt ://www.mass. o eea/a encies/massde /about/contacts/find-the-massde -re ional-office-for- our-ci -or- town.html). Signatures, Dat–a— t— t _ wpaform7doc•rev.5/29/2014 Page 1 of 2 Massachusetts Department of Environmental Protection DEP File Number: Bureau of Resource Protection -Wetlands WPA Form 7 — Extension Permit for Orders of Conditions 64-576 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by DEP C. Recording Confirmation The applicant shall record this document in accordance with General Condition 8 of the Order of Conditions (see below), complete the form attached to this Extension Permit, have it stamped by the Registry of Deeds, and return it to the Conservation Commission. Note: General Condition 8 of the Order of Conditions requires the applicant, prior to commencement of work, to record the final Order(or in this case, the Extension Permit for the Order of Conditions) 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, it shall be noted in the Registry's Granter 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, it shall also be noted on the Land Court Certificate of Title of the owner of the land upon which the proposed Work is done. Detach this page and submit it to the Conservation Commission prior to the expiration of the Order of Conditions subject to this Extension Permit. To: Conservation Commission Please be advised that the Extension Permit to the Order of Conditions for the project at: Project Location DEP File Number has been recorded at the Registry of Deeds of: County for: Property Owner and has been noted in the chain of title of the affected property in accordance with General Condition 8 of the original Order of Conditions on: Date Book Page If recorded land the instrument number which identifies this transaction is: Instrument Number If registered land, the document number which identifies this transaction is: Document Number Signature of Applicant wpafG m7.dm•rev.512 912 01 4 Page 2 M 2 SESDSOFortAvemie P.O.Box 989 Salem MA 01970 '978-744-4550 Fax: 9178-741-01478 July 11, 2017 Ms.Ashley Green Conservation Agent: City of Salem Department of Planning&:Community Development 120 Washington St,;3rd Floor Salem; MA.01970 Wilmington; MA 01887 Re: South Essex Sewerage District Combined Heat'and Power Facility DEP#64-576 Dear Ms.Green: This Letter serves as a req uest,from theSouth Essex Sewerage District(District)for a time extension for the Order of Conditions'for the above-referenced project, issued by the City of Salem Conservation Commission on September 26,2014 and will expire1. o .SI . mber36, 2017.Due to unanticipated delays related to approvals from National,Grid as well as with bidding this project,the District's Combined Heat: and Po'we'r Facility has been delayed.The project bid earlier this year and was awarded to Methuen Construction Company,.lne with a Notice to Proceed Date of March 21, 2017.The contract has a duration of 500 days and is scheduled to be complete by August.3, 2018. Ih:order to allow for It` completion of punch list activities, completion of as-built drawings,and re-establishment of the turf,the, District is requesting an.Extension of the Order of Conditions of 18 months(until March-.26, 2019). On.a related note; Methuen Construction has not yet mobilized to the site and work has not yet begun with the exception of submittal reviews.The initial project site work is scheduled to begin in September. Methuen'Construction will install the erosion controls and we will schedule a,Pre Construction Meeting with you before work commences. M:\00 Projects\00 Cepltal Pr6jects\00 Contmds\71-3 CHP\04 Permitting\Notice of Intent\Lir Con Com-EztiMt6n 7-11-2017.doot 1 is a We appreciate your ongoing support in this important project.If you have any additional questions, please feel free to contact me at (978)744-4450 ext.129. Sincerely, David Michelsen, P.E. District Engineer Cc: Alan F.Taubert,South Essex Sewerage District David Knowlton,City of Salem Robert Adams,AECOM File M:\OO Projects\Oo Capital ProJects\OO ContmCts\31-3 CHP\04 Permitting\Notice of Intent\LtrCon Com fxtemion 7-114017.Eoa r Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 / WPA Form 5 — Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem CityrFown G. Recording Information Prior to commencement of work, 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. Conservation Commission Detach on dotted line, have stamped by the Registry of Deeds and submit to the Conservation I Z l Y Commission. --------------------------------------------------------------------------------------------------------------- To: S1f�Cv✓I Conservation Commission Please be advised that the Order of Conditions for the Project at: 6z FoKT 1weOu,GY , (o`f 5 ?& Project Location MassDEP File Number Has been recorded at the Registry of Deeds of: f5sex 5-WY-/1 3 M1 d- 1171 County Book Page Sinnf for: Property Owner 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: �e�I?4n.G�L'yC 'L(nf 7�r71 rf Date If recorded land, the instrument number identifying this transaction is: /Sd Instrument Number If registered land, the document number identifying this transaction is: Document Number 01 6-0k,/w 5L—A -5mbef&e� Cir S cv— Signature of Applicant ✓EdN �-� © 6/A/�^ C�,�vazly CcLtNSc�- vvpaforrr5.dcc• rev.07/222014 Page 12 of 12 i CITY OF SALEM CONSERVATION COMMISSION September 26, 2014 Alan Taubert, Jr., PE South Essex Sewerage District 50 Fort Avenue Salem, MA 01970 Re: Order of Conditions—DEP #64-576—Combined Heat& Power Facility Dear Mr. Taubert: Enclosed, please find the Order of Conditions for the above-referenced project. Following the 10-business-day appeal period, this document must be recorded at the Essex County Registry of Deeds (Shetland Park 45 Congress Street, Suite 4100 Salem, Massachusetts). Once recorded, please return a copy of Page 12 of the Order, which will indicate to the Commission that the document has been recorded. As indicated in the Order, prior to any work commencing: 1. this Order must be recorded, 2. contact me at least 48 hours prior to any activity to schedule a pre-construction meeting to review the Order with your hired contractor. If you have any further questions, please feel free to contact me at 978-619-5685. Sincerely, Tom Devine Conservation Agent Enclosure CC: DEP Northeast Regional Office . Rob Adams, AECOM Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem city/Town A. General Information Please note: ,Salem this form has f. From: been modified Conservation Commission with added 2. This issuance is for -space to a. ®Order of Conditions b. ❑Amended Order of Conditions accommodate (check one): the Registry of Deeds 3. To: Applicant: Requirements - Alan Taubert Jr., PE Important: a.First Name b. Last Name When filling South Essex Sewerage District(SESD) out forms on c.Organization the 50 Fort Avenue computer, use only the d.Mailing Address tab key to Salem MA 01970 move your e. City/Town f.State g.Zip Code cursor-do not use the 4. Property Owner(if different from applicant): return e key, '�V a.First Name b. Last Name c.Organization reni d.Mailing Address e.City/Town f.State g.Zip Code 5. Project Location: 50 Fort Avenue Salem a.Street Address b.City/Town 42 98 c.Assessors Map/Plat Number d. Parcel/Lot Number Latitude and Longitude, if known: 42d31m43.89s 70d52m26.34s d. Latitude e. Longitude wpaform5.doc rev.07/22@014 Page 1 of 12 e — Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 r WPA Form 5 — Order of Conditions MassDEP File# 1 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEPTransaction# Salem City/Town A. General Information (cont.) 6. Property recorded at the Registry of Deeds for(attach additional information if more than one parcel): South Essex a.County b.Certificate Number(if registered land) 2860, 3729 261, 35 c.Book d.Page 9/11/2014 9/25/2014 9/26/2014 7. Dates: a. Date Notice of Intent Filed b. Date Public Hearing Closed c.Date of Issuance s. Final Approved Plans and Other Documents (attach additional plan or document references as needed): See attached a.Plan Title b. Prepared By c.Signed and Stamped by d. Final Revision Date e.Scale f.Additional Plan or Document Title g. Date B. Findings i. Findings pursuant to the Massachusetts Wetlands Protection Act: Following the review of 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(the Act). Check all that apply: a. ❑ Public Water Supply b. ❑ Land Containing Shellfish c. ❑ Prevention of Pollution d. ❑ Private Water Supply e. ® Fisheries f. ❑ Protection of Wildlife Habitat g. ❑ Groundwater Supply In. ® Storm Damage Prevention i. ® Flood Control 2. This Commission hereby finds the project, as proposed, is: (check one of the following boxes) Approved subject to: a. ® 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. w aforrn&doc• rev.01222014 Page 2 or 12 r Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 WPA Form 5 — Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem Cityrrown B. Findings (cont.) Denied because: b. ❑ 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 the 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. ❑ 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 Act's interests, 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. ❑ Buffer Zone Impacts: Shortest distance between limit of project disturbance and the wetland resource area specified in 310 CMR 10.02(1)(a) a.linear feet Inland Resource Area Impacts: Check all that apply below. (For Approvals Only) Resource Area Proposed Permitted Proposed Permitted Alteration Alteration Replacement Replacement 4. ❑ Banka. linear feet b.linear feet c.linear feet d.linear feet 5. ❑ Bordering Vegetated Wetland a.square feet b.square feet c.square feet d.square feet 6. ❑ Land Under Waterbodies and a.square feet b.square feet c.square feet d.square feet Waterways e.c/y dredged f.dy dredged 7. ❑ Bordering Land Subject to Flooding a.square feet b.square feet c.square feet d.square feet Cubic Feet Flood Storage e.cubic feet f.cubic feet g.cubic feet h.cubic feet e. ❑ Isolated Land Subject to Flooding a.square feet b.square feet d.cubic feet e.cubic feet f.cubic feet Cubic Feet Flood Storage c.cubic feet g. ❑ 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 wpaform5 doc• rev.07/222014 Page 3 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - WetlandsMassDEP File#64-576 f WPA Form 5 - Order of Conditions Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town B. Findings (cont.) Coastal Resource Area Impacts: Check all that apply below. (For Approvals Only) Proposed Permitted Proposed Permitted Alteration Alteration Replacement Replacement 10. El Designated Port Areas Indicate size under Land Under the Ocean, below 11. ❑ Land Under the Ocean a.square feet bsquare feet c.ay dredged d.Gy dredged 12. ❑ Barrier Beaches Indicate size under Coastal Beaches and/or Coastal Dunes below cu yd cu yd 13 ❑ Coastal Beaches a.square feet b.square feet c.nourishment d. nourishment 14. EJ Coastal Dunes cu yd cu yd a.square feet bsquare feet c.nourishment d.nourishment 15. ❑ Coastal Banks a. linea (feet b.linearfeet 16. ❑ Rocky Intertidal Shores a.square feet b.square feet 17. ❑ Salt Marshes a.square feet b.square feet c.square feet d.square feet 18. ❑ Land Under Salt Ponds a.square feet bsquare feet c.Gy dredged d.ay dredged 19. ❑ Land Containing Shellfish a.square feet b.square feet c.square feet d.square feet 20. ❑ Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above a.Gy dredged b.Gy dredged 21. ® Land Subject to 8200 8200 Coastal Storm a.square feet b.square feet Flowage w aformsdoc• rev.0712MO14 Page 4 of 12 I I Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town B. Findings (cont.) •#22. If the 22 ❑ Restoration/Enhancement*: project is for the purpose of restoring or s. uare feet of BVW enhancing a aq b.square feet of sak marsh wetland resource area 23. ❑ Stream Crossing(s): in addition to the square footage that a.number of new stream crossings b.number of replacement stream crossings has been C. General Conditions Under Massachusetts Wetlands Protection Act entered in Section B.5.c BATc(Salt The following conditions are only applicable to Approved projects. 6.17.c Marsh)above, 1 Failure to comply with all conditions stated herein, and with all related statutes and other please enter to regulatory measures, shall be deemed cause to revoke or modify this r e additional fy s O def. amount here. 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 extend the issuance date of the original Final Order of Conditions and the Order will expire on 9/26/2017 unless extended in writing by the Department. 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. wpaform5doc• rev.07222014 Page 5 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-676 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) 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, 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"j "File Number 64-576 " 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 MassDEP. 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. wpalorm5doc• rev.07/22/2014 Page 6 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64`576 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) 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') (t)® is (2)❑ is not subject to the Massachusetts Stormwater Standards. If the work is subject to the 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 Pollution Discharge Elimination System Construction General Permit as required by Stormwater Condition 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 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. wpaformEdoc• rev.07222014 Page 7 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 WPA Form 5 — Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) 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 party (defined in General Condition 18(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 writingof their ongoing legal 9 9 9 responsibility r p y tooperate 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 Pollution Discharge Elimination System Multi-Sector General Permit. 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 18(f)through 18(k)with respect to that BMP. Any failure of the proposed responsible party to implement the requirements of Conditions 18(f)through 18(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. wparDrm5.doc• rev.07222014 Page 8 0112 Massachusetts Department of Environmental Protection Provided by MassDEP: �^ Bureau of Resource Protection -WetlandsMassDEP File#64-576 - WPA Form 5 - Order of Conditions Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) 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. i) 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. 1) Access for maintenance, repair, and/or replacement of BMPs shall not be withheld. Any fencing constructed around stormwater BMPs shall include access gates and shall be at least six inches above grade to allow for wildlife passage. Special Conditions(if you need more space for additional conditions, please attach a text document): Attached special conditions are issued under the Wetlands Protection Act and are sufficient for compliance with the local ordinance ,vpaform5.doc• rev.07/222014 Page 9 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-576 WPA Form 5 — Order of Conditions MassDEPFile# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEPTransadion# Salem Cityrrown D. Findings Under Municipal Wetlands Bylaw or Ordinance 1. Is a municipal wetlands bylaw or ordinance applicable? ® Yes ❑ No 2. The Salem hereby finds (check one that applies): Conservation Commission a. ❑ that the proposed work 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 of Conditions is issued. b. ® that the following additional conditions are necessary to comply with a municipal ordinance or bylaw: Wetlands Protection and Conservation ch. 50 1.Municipal Ordinance or Bylaw 2.Citation 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. The special conditions relating to municipal ordinance or bylaw are as follows (if you need more space for additional conditions, attach a text document): Attached special conditions are issued under the Wetlands Protection Act and are sufficient for compliance with the local ordinance wpaform5 doo• rev.07/22/2014 Page 10 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands EW— WPA Form 5 - Order of Conditions MassDEPFile# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# , a n City/Town E. Signatures 1 Important:When This Order is valid for three years, unless otherwise specified as a special p—� filling out forms condition pursuant to General Conditions#4,from the date of issuance. t. ate of�ante on the computer, J use only the tab Please indicate the number of members who will sign this form. key to move your This Order must be signed by a majority of the Conservation Commission. 2. Number of Signers cursor-do not use the return The Order must be mailed by certified mail (return receipt requested)or hand delivered to key the applicant. A copy must be mailed, hand delivered or/lied electronics y e ' e V`Rr� with the appropriate MassDEP Regional Office. Signatures: ❑ by hand delivery on by certified mail, return receipt requesteaon 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 of 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 (310 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. w a5sigsdoc• rev.02252010 Pager/, of/ Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection -Wetlands 64-576 MassDEP File# WPA Form 5 - Order of Conditions Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP-Transaction# Salem Cityrrown G. Recording Information Prior to commencement of work, 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. Conservation Commission Detach on dotted line, have stamped by the Registry of Deeds and submit to the Conservation Commission. -- -- -------------- To: Conservation Commission Please be advised that the Order of Conditions for the Project at: Project Location MassDEP File Number Has been recorded at the Registry of Deeds of: County Book Page for: Property Owner 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 wpaforre5.doc• rev.07222014 Page 12 of 12 Attachment to Order of Conditions # 64-576 €� � 4 Page 1 of 5 71 I SALEM CONSERVATION COMMISSION DEP FILE #64-576. South Essex Sewerage District (SESD) 50 Fort Avenue City of Salem, Massachusetts ADDITIONAL FINDINGS Based on the Estimated Habitats of Rare Wildlife and Certified Vernal Pools Map (9/18/2014, online)from Natural Heritage & Endangered Species Program (NHESP) of the Massachusetts Division of Fisheries and Wildlife, it has been determined that this project does not occur near any habitat of state-listed rare wildlife species nor contain any vernal pools. The Order permits the construction of a combined heat and power facility and appurtenances per 9/11/2014 Notice of Intent and approved plans. GENERAL CONDITIONS 1. This Order of Conditions must be recorded in its entirety(including all 5 pages of Special Conditions) at the Essex County Registry of Deeds or the Land Court for the district in which the land is located, after the expiration of the 10-day appeal period and within 30 days of the issuance. A copy of the recording information must be submitted to the Salem Conservation Commission before any work approved in this Order commences. 2. Approval of this application does not constitute compliance with any law or regulation other than M.G.L Chapter 131, Section 40,Wetlands Regulations 310 CMR 10.00 and the City of Salem Wetlands Protection Ordinance, Salem Code Chapter 50. 3. All work shall be performed in accordance with this Order of Conditions and approved site plan(s). No alteration of wetland resource areas or associated buffer zones,other than that approved in this Order, shall occur on this property without prior approval from the Commission. 4. Prior to any work commencing on site, a DEP Sign showing DEP File#64-576 must be installed at the entrance to the site and seen from the public way, but not placed on a living tree. 5. No work approved in this Order may commence until the ten 10 da appeal period has lapsed from the PP Y ( ) Y PP P P date of the issuance of this Order. 6. With respect to this Order,the Commission designates the Conservation Agent as its agent with powers to act on its behalf in administering and enforcing this Order. 7. The Commission or its Agent, officers,or employees shall have the right to enter and inspect the property at any time for compliance with the conditions of this Order,the Wetlands Protection Act MGL Chapter 131, Section 40,the Wetlands Regulations 310 CMR 10.00,and shall have the right to require any data or documentation that it deems necessary for that evaluation. Attachment to Order of Conditions # 64-576 c Page 2 of 5 8. 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 Commission shall be notified in writing within 30 days of all transfers of title of any portion of the property that takes place prior to issuance of the Certificate of Compliance. 9. It is the responsibility of the applicant to procure all other applicable federal, state and local permits and approvals associated with this project. These permits may include but are not necessarily limited to the following: (1) Section 404 of the Federal Water Pollution Control Act(P.L. 92-500, 86 stat. 816),U.S. Army Corps of Engineers. (2) Water Quality Certification in accordance with the Federal Water Pollution Control under authority of sec. 27(5)of Chapter 21 of the Massachusetts General Laws as codified in 314 CMR 9.00. (3) Sewer Extension Permit from the DEP Division of Water Pollution Control under G.L. Ch. 21A ss7 and 314 CMR 7.00. Any Board of Health permit for septic system design for any portion of the septic system within 100 feet of wetlands shall be submitted to the Commission prior to construction initiation. (4) Design Requirements for Construction in Floodplains under the State Building Code(780 CMR 744.). 10. If there are conflicting conditions within this Order,the stricter condition(s) shall rule. 11. All work shall be performed so as to ensure that there will be no sedimentation into wetlands and surface waters during construction or after completion of the project. 12. The Commission or its Agent shall have the discretion to modify the erosion/siltation control methods and boundary during construction if necessary. 13. The Commission reserves the right to impose additional conditions on portions of this project or this site to mitigate any actual or potential impacts resulting from the work herein permitted. 14. The work shall conform to the following attached plans and special conditions: Final Approved Plans SOUTH ESSEX SEWERAGE DISTRICT CONTRACT 11-3 COMBINED HEAT AND POWER FACILITY(sheets G-2 and C-3) (Title) September 2014 (Dated) None (Signed and Stamped by) City of Salem Conservation Commission (On file with) 15. Any proposed changes in the approved plan(s)or any deviation in construction from the approved plan(s) shall require the applicant to file a Notice of Project Change with the Commission. The Notice shall be accompanied by a written inquiry prior to their implementation in the field, as to whether the change(s) is substantial enough to require filing a new Notice of Intent or a request to correct or amend " Attachment to Order of Conditions # 64576 Page 3 of 5 this Order of Conditions. A copy of such request shall at the same time be sent to the Department of Environmental Protection. 16. In conjunction with the sale of this property or any portion thereof before a Certificate of Compliance has been issued,the applicant or current landowner shall submit to the Commission a statement signed by the buyer that he/she is aware of an outstanding Order of Conditions on the property and has received a copy of the Order of Conditions. 17. [Reserved]. PRIOR TO CONSTRUCTION 18. Prior to the commencement of any activity on this site other than activities listed above,there must be a Pre-Construction Meeting on site between the project supervisor,the contractor responsible for the work, and the Conservation Agent and/or a member of the Conservation Commission to ensure that the requirements of the Order of Conditions are understood. The staked erosion control line shall be adjusted, if necessary,during the pre-construction meeting. Please contact the Conservation Agent at (978) 619-5685 at least forty-eight(48) hours prior to construction to arrange for the Pre- Construction Meeting. 19. Prior to the pre-construction meeting and commencement of any activity on this site, sedimentation and erosion control barriers shall be installed as shown on the approval plan(s)and detail drawings. The Commission and/or its Agent shall inspect and approve such installation at the pre-construction meeting. 20. No clearing of vegetation, including trees,or disturbance of soil shall occur prior to the pre-construction meeting. Minimal disturbance of shrubs and herbaceous plants shall be allowed prior to the pre- construction meeting if absolutely necessary in order to place erosion control stakes where required. 21. There shall be adequate additional erosion and sediment controls stored onsite for emergency purposes. EROSION CONTROL 22. Appropriate erosion control devices shall be in place prior to the beginning of any phase of construction, and shall be maintained during construction in any wetland resource area and/or buffer zones. The erosion control measures shown on the approval plan(s)and provisions in the Order will be the minimum standards for this project; the Commission or its Agent may require additional measures. 23. All debris,fill and excavated material shall be stockpiled a location far enough away from the wetland resource areas to prevent sediment from entering wetland resource areas. 24. Erosion and sedimentation control devices shall be inspected after each storm event and repaired or replaced as necessary. Any accumulated silt adjacent to the barriers shall be removed. 25. The area of construction shall remain in a stable condition at the close of each construction day. 26. Any de-watering of trenches or other excavation required during construction shall be conducted so as to prevent siltation of wetland resource areas. All discharge from de-watering activities shall be filtered through straw bale sediment traps, silt filter bags or other means approved by the Commission or its Administrator. L y. Attachment to Order of Conditions# 64576 7.r L . Page 4 of 5 '" 4,. 27. Within thirty(30) days of completion of construction on any given portion of the project, all disturbed areas in the completed portion of the site shall be permanently stabilized with rapidly growing vegetative cover, using sufficient top soil to assure long-term stabilization of disturbed areas. 28. If soils are to be disturbed for longer than two(2)months, a temporary cover of rye or other grass should be established to prevent erosion.and sedimentation. If the season is not appropriate for plant growth, exposed surface shall be stabilized by other appropriate erosion control measures,firmly anchored,to prevent soils from being washed by rain or flooding. DURING CONSTRUCTION 29. A copy of this Order of Conditions and the plan(s)approved in this Order shall be available on site at all times when work is in progress. 30. No alteration or activity shall occur beyond the limit of work as defined by the siltation barriers shown on the approved plan(s). 31. All waste products,grubbed stumps, slash;construction materials, etc. shall be deposited at least 100 feet from wetland resource areas and 200 feet from river. 32. Cement trucks shall not be washed out in any wetland resource or buffer zone area;nor into any drainage system. Any deposit of cement or concrete products into a buffer zone or wetland resource area shall be immediately removed. 33. All exposed sub-soils shall be covered by a minimum of three(3)inches of quality screened loam topsoil prior to seeding and final stabilization. 34. Immediately following drainage structure installation all inlets shall be protected by silt fence,strawbale barriers and/or silt bags to filter silt from stormwater before it enters s the drainage system. 35. There shall be no pumping of water from wetland resource areas. 36. All equipment shall be inspected regularly for leaks. Any leaking hydraulic lines,cylinders or any other components shall be fixed immediately. 37. During construction,all drainage structures shall be inspected regularly and cleaned as necessary. 38. The applicant is herby notified that failure to comply with all requirements herein may result in the issuance of enforcement actions by the Conservation Commission including,but not limited to, civil administrative penalties under M.G.L Chapter 21A,section 16. AFTER CONSTRUCTION 39. Upon completion of construction and final soil stabilization,the applicant shall submit the following to the Conservation Commission to request a Certificate of Compliance(COC): (1) A Completed Request for a Certificate of Compliance form (WPA Form 8A or other form if required by the Conservation Commission at the time of request). (2) A letter from a Registered Professional Engineer certifying compliance of the property with this Order of Conditions. (3) An "As-Built"plan signed and stamped by a Registered Professional Engineer or Land Surveyor showing post-construction conditions within all areas under the jurisdiction of the Massachusetts Wetlands Protection Act. This plan shall include at a minimum: Y Mo•. y g�. Attachment to Order of Conditions # 64-576 Page 5 of 5 (a) All wetland resource area boundaries with associated buffer zones and regulatory setback areas taken from the plan(s)approved in this Order of Conditions; (b) Locations and elevations of all stormwater management conveyances,structures and best management designs, including foundation drains,constructed under this Order within any wetland resource area or buffer zone; (c) Distances from any structures constructed under this Order to wetland resource areas- "structures"include,but are not limited to,all buildings,septic system components,wells, utility lines,fences,retaining walls,and roads/driveways; (d) A line delineating the limit of work-"work"includes any filling,excavating and/or disturbance of soils or vegetation approved under this Order; 40. When issued,the Certificate of Compliance must be recorded at the Essex County Registry of Deeds and a copy of the recording submitted to the Salem Conservation Commission. 41. If the completed work differs from that in the original plans and conditions,the report must specify how the work differs; at which time the applicant shall first request a modification to the Order. Only upon review and approval by the Commission, may the applicant request in writing a Certificate of Compliance as described above. 42. Erosion control devices shall remain in place and properly functioning until all exposed soils have been stabilized with final vegetative cover and the Conservation Commission and/or its Agent has authorized their removal. ADDITIONAL CONDITIONS 43. Prior to start of construction, applicant shall provide the Conservation Agent with an electronic copy of detailed construction documents for the project. _• - - - Dri��►�a.�: - __ , r • • • • • • • NOTICE OF INTENT • • • Combined Heat and Power Facility • Contract No. 11-3 • • Salem, MA • • • • • Application of: • • • South Essex Sewerage District • • Submitted to: • • Salem Conservation Commission • • Massachusetts Department of Environmental Protection • (Northeast Region) • • Submitted by: • • ALCOM • • • September 11 , 2014 • • • • • • • • AECOM AECOM 781 246 5200 tel 701 Edgewater Drive 781 2456293 fax • Wakefield,MA 01880 www.aecom.com • September 11,2014 • • Salem Conservation Commission Attn: Mr.Tom Devine, Conservation Agent • 120 Washington St.,3rd Floor • Salem, MA 01970 • SUBJECT: NOTICE OF INTENT • Combined Heat and Power Facility • South Essex Sewerage District • Dear Commission Members: On behalf of the South Essex Sewerage District(SESD), AECOM respectfully submits one original and 7 copies of this Notice of Intent(NOI)for the construction of a Combined Heat and Power(CHP)facility at • the District's existing wastewater treatment plant(WWTP) located at 50 Fort Avenue in Salem, MA. • The District's WWTP is located adjacent to Cat Cove in Salem Harbor. Although some of the • proposed work will be located within the 100-foot buffer zone, all of the work will occur in previously • developed areas. In addition, no wetland resource areas will be disturbed for the proposed project activities. • The project has been designed to comply with the Massachusetts Wetlands Protection Act (M.G.L., c. • 131, s. 40), it's implementing Regulations (310 CMR 10.00), and the City of Salem Wetlands • Protection Ordinance, Salem Code Chapter 50. • It should also be noted that the MassDEP Waterways Program has already reviewed the proposed • project and determined that the proposed CHP facility represents an insignificant deviation from the • existing Chapter 91 License (DEP 3455) issued to SESD that includes the site of the project. As a result, MassDEP has indicated that the proposed project falls within the minor modification standards • pursuant to 310 CMR 9.22(3)(a) and does not require the submission of a M.G.L. Chapter 91 license • application (refer to Attachment E). • Details of the proposed project are included in the attached application and figures. We look forward to • discussing this Notice of Intent with the Commission at the hearing. If you have any questions, please do not hesitate to contact me at(781)224-6258. • • Sin • • Robert B.Adams, P.E. Associate Vice President • • Enclosures • cc: MassDEP—Northeast Region • Alan Taubert, SESD David Michelsen, SESD • Eric Barber, SESD • Tom Touchet,AECOM • • • • • • • • Table of Contents • • WPA Form 3— Notice of Intent • Attachment A— Project Description • 1.0 INTRODUCTION................................................................................................................. 1 • 2.0 PROPOSED ACTIVITIES.................................................................................................... 1 • 3.0 WETLAND RESOURCES................................................................................................... 1 4.0 SUMMARY OF IMPACTS ................................................................................................... 2 • 5.0 MINIMIZATION OF ADVERSE IMPACTS........................................................................... 3 • 6.0 CONCLUSION..................................................................................................................... 3 • • Attachment B—Site Locus Map • Attachment C—Project Plans Drawing G-2: General Plan • Drawing C-3: Site Piping Plan I Attachment D—Abutter List, Abutter Notice and Affidavit of Service • Attachment E—Agency Correspondence • • • • • • • • • • • • • • • • • • • • Massachusetts Department of Environmental Protection Pro'videdbyMassDEP-'- • Bureau of Resource Protection Wetlands MassDEP File Number i • WPA Form 3 - Notice of Intent i Document Transaction Number • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem Imp• City/Town • When filling out A. General Information Whe forms on the • computer, use 1. Project Location (Note: electronic filers will click on button to locate project site): only the tab key • to move your 50 Fort Avenue Salem 01970 cursor-do not use the return a.Street Address b.City/Town c.Zip Code • key. Latitude and Longitude: 42031'43.89"N 70052'26.34"W • d. Latitude e. Longitude • �(�� +�^/�� 42 0098-0 ILEI f.Assessors Map/Plat Number g. Parcel/Lot Number 2. • Applicant: • Alan Taubert Jr., PE • a. First Name b. Last Name • Note: South Essex Sewerage District (SESD) Before c.Organization • completing this form consult 50 Fort Avenue • your local d.Street Address Conservation Salem MA 01970 • Commission e.City/Town f.State g.Zip Code regarding any• municipal bylaw 978.744-4550 ext ataubert@sesd.com or ordinance. 127 i. Fax Number j. Email Address - • 3. Property owner(required if different from applicant): ❑ Check if more than one owner • • a. First Name b.Last Name • c.Organization • • d.Street Address • e.City/Town I.State g.Zip Code • h. Phone Number i.Fax Number j.Email address 4. Representative (if any): • Robert Adams a. First Name b. Last Name • AECOM c.Company • 701 Edgewater Drive • d. Street Address Wakefield MA 01880 • e.City/Town f.State g.Zip Code • 781-224-6626 robert.adams@aecom.com h. Phone Number i. Fax Number j. Email address 5. Total WPA Fee Paid (from NOI Wetland Fee Transmittal Form): • Fee Exempt N/A N/A a.Total Fee Paid b.State Fee Paid c.City/Town Fee Paid • • wpaform3.doc•rev.5/28/2014 Page 1 of 8 • • • Massachusetts Department of Environmental Protection Provided by—ivtaSSDEP: v • Bureau of Resource Protection - Wetlands 1 • � � MassDEP File Number ) • WPA Form 3 - Notice of Intent Document Transaction Number • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem City/Town • A. General Information (continued) • • 6. General Project Description: • The proposed project involves the construction of a Combined Heat and Power(CHP) facility at the District's existing wastewater treatment plant (WWTP) located at 50 Fort Avenue in Salem, MA. Refer • to Attachment A for additional details. • • 7a. Project Type Checklist: • 1. ❑ Single Family Home 2. ❑ Residential Subdivision 3. ❑ Limited Project Driveway Crossing 4. ❑ Commercial/Industrial • 5. ❑ Dock/Pier 6. ® Utilities • 7. ❑ Coastal Engineering Structure 8. ❑ Agriculture (e.g., cranberries, forestry) 9. ❑ Transportation 10. ❑ Other 71b. Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR • 10.24 (coastal) or 310 CMR 10.53 (inland)? • 1. ® Yes ❑ No If yes, describe which limited project applies to this project: • 310 CMR 10.24 (7)(b): Construction of underground utilities for support of a Public Utility. • 2. Limited Project • 8. Property recorded at the Registry of Deeds for: • Essex • a.County b.Certificate p(if registered land) Book 2860 p. 261; Book 3729 p.35 • c.Book d. Page Number • B. Buffer Zone & Resource Area Impacts (temporary & permanent) • 1. ❑ Buffer Zone Only—Check if the project is located only in the Buffer Zone of a Bordering • Vegetated Wetland, Inland Bank, or Coastal Resource Area. 2. ❑ Inland Resource Areas (see 310 CMR 10.54-10.58; if not applicable, go to Section B.3, • Coastal Resource Areas). • Check all that apply below. Attach narrative and any supporting documentation describing how the • project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location. • • Resource Area Size of Proposed Alteration Proposed Replacement(if any) For all projects affecting other Resource Areas, a. F-1 Bank 1.linear feet 2.linear feet • please attach a b. ❑ Bordering Vegetated narrative • explaining how Wetland 1.square feet 2.square feet the resource • area was c. ❑ Land Under 1.square feet 2.square feet delineated. Waterbodies and • Waterways • 3.cubic yards dredged • wpaform3.doc•rev.5/28/2014 Page 2 of 8 • k Massachusetts Department of Environmental Protection 1 rovided Cy MassDEP:--" ` • Bureau of Resource Protection - Wetlands MassDEP File Number WPA Form 3 - Notice of Intent Document Transaction Number, • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem 4 City/Town B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont'd) • • Resource Area Size of Proposed Alteration Proposed Replacement(if any) • d. ❑ Bordering Land • Subject to Flooding 1.square feet 2.square feet • 3.cubic feet of flood storage lost 4.cubic feet replaced e. ❑ Isolated Land Subject to Flooding 1.square feet • 2.cubic feet of flood storage lost 3.cubic feet replaced • f. ❑ Riverfront Area 1.Name of waterway(if available) 2.Width of Riverfront Area (check one): ❑ 25 ft. - Designated Densely Developed Areas only ❑ 100 ft. - New agricultural projects only ❑ 200 ft. -All other projects 3. Total area of Riverfront Area on the site of the proposed project: square fee[ • 4. Proposed alteration of the Riverfront Area: • a.total square feet b.square feet within 100 ft. c.square feet between 100 ft.and 200 ft. 5. Has an alternatives analysis been done and is it attached to this NOI? ❑ Yes❑ No III • 6.Was the lot where the activity is proposed created prior to August 1, 1996? ❑ Yes❑ No 3. ® Coastal Resource Areas: (See 310 CMR 10.25-10.35) • Check all that apply below. Attach narrative and supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards • requiring consideration of alternative project design or location. • - Online Users: Include your Resource Area Size of Proposed Alteration Proposed Replacement(if any) • document transaction number a. El Designated Port Areas Indicate size under Land Under the Ocean, below • (provided on your • receipt page) b. ❑ Land Under the Ocean 1.square fee[ with all q • supplementary information you 2.cubic yards dredged • submit to the Department. c. ❑ Barrier Beach Indicate size under Coastal Beaches and/or Coastal Dunes below • • d. ❑ Coastal Beaches 1.square feet 2.cubic yards beach nourishment e. ❑ Coastal Dunes 1.square feet 2.cubic yards dune nourishment • wpaform3.doc•rev. 5/28/2014 Page 3 of 8 • • • Massachusetts Department of Environmental Protection (Provided by MassDER_ • Bureau of Resource Protection - Wetlands 1 MassDEP File Number WPA Form 3 - Notice of Intent • LDocument Transaction Number • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem _ • City/Tom B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont'd) • • Size of Proposed Alteration Proposed Replacement(if any) • f. ❑ Coastal Banks 1.linear feet • g. ❑ Rocky Intertidal • Shores 1.square feet • h. ❑ Salt Marshes 1.square feet 2.sq ft restoration, rehab.,creation • i. ❑ Land Under Salt • Ponds 1.square feet • 2.cubic yards dredged • j. F-1 Land Containing Shellfish 1.square feet • k. ❑ Fish Runs Indicate size under Coastal Banks, inland Bank, Land Under the • Ocean, and/or inland Land Under Waterbodies and Waterways, • above • 1.cubic yards dredged • 1. ® Land Subject to 8,200 • Coastal Storm Flowage 1.square feet 4. ❑ Restoration/Enhancement • 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.2.b or B.3.h above, please enter the additional amount here. • • a.square feet of BVW b.square feet of Salt Marsh • 5. ❑ Project Involves Stream Crossings • a.number of new stream crossings b.number of replacement stream crossings • C. Other Applicable Standards and Requirements • • Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review • 1. Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on • the most recent Estimated Habitat Map of State-Listed Rare Wetland Wildlife published by the Natural • Heritage and Endangered Species Program (NHESP)?To view habitat maps, see the Massachusetts • Natural Heritage Atlas or go to http://maps.massois.state.ma.us/PRI EST HAB/viewer.htm. • a. ❑ Yes ® No If yes, include proof of mailing or hand delivery of Not to: • Natural Heritage and Endangered Species Program • Division of Fisheries and Wildlife • October 2008 100 Hartwell Street,Suite 230 b. Date of map West Boylston, MA 01583 • • • wpaform3.doc•rev.5/28/2014 Page 4 of 8 • • Massachusetts Department of Environmental Protection Provided by MaSSDEP t • Bureau of Resource Protection - Wetlands ' • LDEP File NumberWPA Form 3 - Notice of Intentment Transaction Number • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem • City/Town C. Other Applicable Standards and Requirements (cont'd) • If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review(321 • CMR 10.18). To qualify for a streamlined, 30-day, MESANVetlands Protection Act review, please • complete Section CAL, and include requested materials with this Notice of Intent (NOI); OR complete • Section CAA, if applicable. If MESA supplemental information is not included with the NOI, by completing Section 1 of this form, the NHESP will require a separate MESA filing which may take up • to 90 days to review(unless noted exceptions in Section 2 apply, see below). • 1. c. Submit Supplemental Information for Endangered Species Review' • 1. ❑ Percentage/acreage of property to be altered: • • (a)within wetland Resource Area percentage/acreage • (b) outside Resource Area percentage/acreage • 2. ❑ Assessor's Map or right-of-way plan of site 3. ❑ Project plans for entire project site, including wetland resource areas and areas outside of wetlands jurisdiction, showing existing and proposed conditions, existing and proposed • tree/vegetation clearing line, and clearly demarcated limits of work**"' • (a) ❑ Project description (including description of impacts outside of wetland resource area & • buffer zone) • (b) ❑ Photographs representative of the site • (c)❑ MESA filing fee (fee information available at http://www.mass.gov/eea/agencies/dfq/dfw/natu ral-heritage/regulatory-review/mass- • endangered-species-act-mesa/mesa-fee-schedule.html). Make check payable to • "Commonwealth of Massachusetts - NHESP" and mail to NHESP at above address • Projects altering 10 or more acres of land, also submit. • (d)❑ Vegetation cover type map of site (e) ❑ Project plans showing Priority& Estimated Habitat boundaries • d. OR Check One of the Following • 1.❑ Project is exempt from MESA review. • Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, • http://www.mass.gov/eea/agencies/dfq/dfw/laws-regulations/cmr/321-cmr-1000- massachusetts-endangered-species-act.html#10.14; the NOI must still be sent to NHESP • if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) • 2.❑ Separate MESA review ongoing. a. NHESP Tracking# b. Date submitted to NHESP • • • Some projects not in Estimated Habitat may be located in Priority Habitat,and require NHESP review(see http://www.mass.ciov/eea/agencies/dfq/dfw/natural-heritage/regulatory-review/). Priority Habitat includes habitat for state-listed plants • and strictly upland species not protected by the Wetlands Protection Act. • `* MESA projects may not be segmented(321 CMR 10.16).The applicant must disclose full development plans even if such plans are not required as part of the Notice of Intent process. • wpaform3.doc•rev.5/28/2014 Page 5 of 8 • • • • Massachusetts Department of Environmental Protection Provided by MassbEP:- __ • Bureau of Resource Protection Wetlands + MassDEP File Number • WPA Form 3 - Notice of Intent Document Transaction Number • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem • Citylrown • C. Other Applicable Standards and Requirements (cont'd) • 3. ❑ Separate MESA review completed. Include copy of NHESP "no Take" determination or valid Conservation & Management • Permit with.approved plan. • 2. For coastal projects only, is any portion of the proposed project located below the mean high water • line or in a fish run? • a. ❑ Not applicable—project is in inland resource area only • b. ❑ Yes ® No If yes, include proof of mailing or hand delivery of NOI to either: • South Shore- Cohasset to Rhode North Shore- Hull to New Hampshire: • Island, and the Cape& Islands: • Division of Marine Fisheries- Division of Marine Fisheries- Southeast Marine Fisheries Station North Shore Office • Attn: Environmental Reviewer Attn: Environmental Reviewer • 1213 Purchase Street—3rd Floor 30 Emerson Avenue New Bedford, MA 02740-6694 Gloucester, MA 01930 • • Also if yes,the project may require a Chapter 91 license. For coastal towns in the Northeast Region, • please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional Office. • • 3. Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? • online users: a. El Yes ® No If yes, provide name of ACEC (see instructions to WPA Form 3 or MassDEP include your Website for ACEC locations). Note: electronic filers click on Website. • document transaction b.ACEC • number (provided on your 4. Is any portion of the proposed project within an area designated as an Outstanding Resource Water • receipll page) (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00? with a • supplementary a. ❑ Yes ® No information you submit to the 5. Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands • Department. Restriction Act (M.G.L. c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L. c. 130, § 105)? • a. ❑ Yes ® No • 6. Is this project subject to provisions of the MassDEP Stormwater Management Standards? • a. ® Yes. Attach a copy of the Stormwater Report as required by the Stormwater Management • Standards per 310 CMR 10.05(6)(k)-(q) and check if: 1. ❑ Applying for Low Impact Development (LID) site design credits (as described in • Stormwater Management Handbook Vol. 2, Chapter 3) • 2.❑ A portion of the site constitutes redevelopment 3.❑ Proprietary BMPs are included in the Stormwater Management System. • b. ❑ No. Check why the project is exempt: • 1. ❑ Single-family house • • wpaform3.doc•rev.5/28/2014 Page 6 of 8 • Massachusetts Department of Environmental Protection Provided by MassDEP:'" Bureau of Resource Protection - Wetlands • -MassDEP File Number WPA Form 3 - Notice of Intent • Document T.ransactiory Number j • Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem Cityrrown • C. Other Applicable Standards and Requirements (cont'd) • 2.❑ Emergency road repair • 3.❑ Small Residential Subdivision (less than or equal to 4 single-family houses or less than or equal to 4 units in multi-family housing project)with no discharge to Critical Areas. • D. Additional Information • • Applicants must include the following with this Notice of Intent(NOI). See instructions for details. • Online Users: Attach the document transaction number(provided on your receipt page) for any of the • following information you submit to the Department. • 1. 0 USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. • (Electronic filers may omit this item.) j • 2. ® Plans identifying the location of proposed activities (including activities proposed to serve as a • Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to • the boundaries of each affected resource area. • 3. 0 Identify the method for BVW and other resource area boundary delineations (MassDEP BVW • Field Data Form(s), Determination of Applicability, Order of Resource Area Delineation, etc.), andattach documentation of the methodology. 4. ® List the titles and dates for all plans and other materials submitted with this NOI. • See the list included in the Table of Contents a.Plan Title • AECOM Robert Adams • b.Prepared By c.Signed and Stamped by varies • d.Final Revision Date e.Scale • f.Additional Plan or Document Title g. Date • 5. ❑ If there is more than one property owner, please attach a list of these property owners not • listed on this form. • s. ❑ Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. • 7. ❑ Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. • 8. ® Attach NOI Wetland Fee Transmittal Form • • s. ® Attach Stormwater Report, if needed. • Note: Provided in separate volume • • • • • • wpaform3.doc•rev.5/28/2014 Page 7 of 8 • • • Massachusetts Department of Environmental Protection Provided by MassDEP —�� • Bureau of Resource Protection - Wetlands • MassDEP File_Number. WPA Form' 3 - Notice of Intent • Document Transaction Number' Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 - - • City/Town • E. Fees • 1. K Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of • the Commonwealth, federally recognized Indian tribe housing authority, municipal housing • authority, or the Massachusetts Bay Transportation Authority. • Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee • Transmittal Form) to confirm fee payment: • 2.Municipal Check Number 3.Check date • 4.State Check Number 5. Check date • • 6. Payor name on check: First Name 7. Payor name on check: Last Name • F. Signatures and Submittal Requirements • I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that • the Conservation Commission will place notification of this Notice in a local newspaper at the expense of • the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). • 1 further certify under penalties of perjury that all abutters were notified of this application, pursuant to the • requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the • project location. e� /�- '7AZ� 1. Signature of Applicant 2.Date •• 3er(if erent) 4. DateSoPn I-//- !y • 5. Signature of Representative(if any) 6. Date • • For Conservation Commission: • Two copies of the completed Notice of Intent(Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation • Commission by certified mail or hand delivery. • For MassDEP: One copy of the completed Notice of Intent(Form 3), including supporting plans and documents, one • copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP • Regional Office (see Instructions) by certified mail or hand delivery. Other: • If the applicant has checked the "yes' box in any part of Section C, Item 3, above, refer to that section • and the Instructions for additional submittal requirements. • The original and copies must be sent simultaneously. Failure by the applicant to send copies in a • timely manner may result in dismissal of the Notice of Intent. • • • • wpaform3.doc-rev.5/28/2014 Page 6 of 8 • • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands • 1 NOI Wetland Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 • • Important:When A. Applicant Information • filling out forms on the computer, 1. Location of Project: • use only the tab key to move your 50 Fort Avenue Salem • cursor-do not use the return a.Street Address b.City/Town • key. IMI Fee Exempt c.Check number d.Fee amount 2. Applicant Mailing Address: • Alan TaPE ream a. First Name b. LastastName • South Essex Sewerage District c.Organization • 50 Fort Avenue • d.Mailing Address Salem MA 01970 • e.City/Town I.State g.Zip Code • 978-744-4550 X 127 ataubert@sesd.com • h. Phone Number i. Fax Number j.Email Address • 3. Property Owner(if different): • a. First Name b. Last Name • • c.Organization • d.Mailing Address • e.City/Town f.State g.Zip Code To calculate h. Phone Number I. Fax Number I. Email Address • filing fees,refer B. Fees to the category • fee list and Fee should be calculated using the following process &worksheet. Please see Instructions before examples in the filling out worksheet. • instructions for filling out WPA Step 1fType of Activity: Describe each type of activity that will occur in wetland resource area and buffer zone. • Form 3(Notice of Intent). • Step 2/Number of Activities: Identify the number of each type of activity. • Step 3/Individual Activity Fee: Identify each activity fee from the six project categories listed in the instructions. • Step 4/Subtotal Activity Fee: Multiply the number of activities(identified in Step 2)times the fee per category • (identified in Step 3)to reach a subtotal fee amount. Note: If any of these activities are in a Riverfront Area in addition to another Resource Area or the Buffer Zone,the fee per activity should be multiplied by 1.5 and then • added to the subtotal amount. • Step Srrotal Project Fee: Determine the total project fee by adding the subtotal amounts from Step 4. • Step 6/Fee Payments: To calculate the state share of the fee, divide the total fee in half and subtract$12.50.To • calculate the city/town share of the fee, divide the total fee in half and add$12.50. • • • noifeetf.doc•Wetland Fee Transmittal Form•rev.10/17/11 Page 1 of 2 • • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands • NOI Wetland Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 • • B. Fees (continued) • Step t/rype of Activity Step 2/Number Step Step 4/Subtotal Activity • of Activities 3/Individual Fee • Activity Fee • • • • • • • • • • • Step 5/rotal Project Fee: • Step 6/Fee Payments: • Total Project Fee: N/A • a.Total Fee from Step 5 • State share of filing Fee: N/A b. 1/2 Total Fee less$12.50 • City/Town share of filling Fee: N/Ac. v2 total Fee plus$12so • C. Submittal Requirements • • a.) Complete pages 1 and 2 and send with a check or money order for the state share of the fee, payable to • the Commonwealth of Massachusetts. Department of Environmental Protection • Box 4062 • Boston, MA 02211 • b.) To the Conservation Commission: Send the Notice of Intent or Abbreviated Notice of Intent; a copy of this form; and the city/town fee payment. • To MassDEP Regional Office(see Instructions): Send a copy of the Notice of Intent or Abbreviated Notice of • Intent;a copy of this form; and a copy of the state fee payment. (E-filers of Notices of Intent may submit these • electronically.) • • • • noifeetf.doc•wetland Fee Transmittal Form•rev.10/17/11 Page 2 of 2 • • • • • • • • • • • • • • • Attachment A - Project Description • • • • • • • • • • • • • • • • • • • • • • • • • • • 1.0 INTRODUCTION • The South Essex Sewerage District (SESD) owns and operates a regional wastewater treatment • plant(WWTP) located at 50 Fort Avenue in Salem, MA(Attachment B). The WWTP services the • adjacent communities of Peabody, Salem, Beverly, Danvers, Marblehead, a portion of Middleton, • as well as, several other entities including a state correctional facility. • • The proposed project involves the installation of a Combined Heat and Power(CHP) facility at the • District's WWTP. CHP facilities, also known as cogeneration facilities, are used to • simultaneously generate efficient, clean, and reliable electricity and useful heat. With the • installation of the proposed CHP facility, SESD will be able to decrease its overall energy usage. • • Although some of the proposed work will be located within the 100-foot buffer zone to the Coastal • Bank of Salem Harbor(Cat Cove), all of the work will occur in previously developed areas. In • addition, no wetland resource areas will be disturbed. Nevertheless, this Notice of Intent is being submitted as required under the Massachusetts Wetlands Protection Act (M.G.L., c. 131, s. 40), • its implementing Regulations (310 CMR 10.00), and the City of Salem Wetlands Protection • Ordinance, Salem Code Chapter 50. • • 2.0 PROPOSED ACTIVITIES • The proposed CHP facility has been designed as a pre-packaged, skid-mounted system. The • CHP package will include a 1.5 Megawatt (MW), natural gas fired, internal combustion engine • generator enclosed within a sound attenuated container having approximate dimensions of 50- feet long, 12-feet wide, and 15-feet high • • The area surrounding the CHP equipment will be paved with bituminous pavement. The • pavement will be sloped so that stormwater will sheet flow to an infiltration trench filled with • crushed stone. The infiltration trench will provide an effective means of storage and infiltration for • the collected stormwater runoff and will meet the MassDEP Stormwater Management Standards. • • 3.0 WETLAND RESOURCES • • A desktop analysis of resources in the vicinity of the proposed project included the consultation of • various sources of information relative to the topography, wetlands, and rare wetland species. • Off-site resources consulted included the U.S. Geological Survey(USGS) topographic map • (MassGIS, 2002), the Federal Emergency Management Agency(FEMA) Flood Insurance Rate . Map (July 16, 2014), the Massachusetts Department of Environmental Protection (MassDEP) • wetlands MassGIS data overlay(2009), the Massachusetts Natural Heritage and Endangered • A-1 • • • • • Species Program (NHESP) updated MassGIS overlay for Estimated Habitat of Rare Wildlife • (2008a) and Priority Habitat of Rare Species (2008b), and the Massachusetts Department of • Conservation and Recreation Areas of Critical Environmental Concern (ACEC) Program • MassGIS layer(2009). • • As shown on Figure 1 in Attachment B, the project area is located on Salem Neck on the eastern • edge of Cat Cove in Salem Harbor. According to the Massachusetts Department of Conservation • and Recreation's Areas of Critical Environmental Concern (ACEC) Program MassGIS layer(April • 2009), no ACECs are located within or near the project area. Similarly, the Massachusetts • Natural Heritage and Endangered Species Program's (NHESP) updated MassGIS overlays for • Estimated Habitat of Rare Wildlife and Priority Habitat of Rare Species and Certified Vernal Pools • shows that there are no Estimated or Priority Habitats or Certified Vernal Pools located within the vicinity of the project. • • The MassDEP wetlands layer shows the boundary for Coastal Bank along the edge of Cat Cove. • In accordance with the Wetlands Protection Act regulations, a 100-foot Buffer zone line from the • Coastal Bank resource line was applied to the maps showing where the Buffer Zone extends onto • portions of the project area (Attachment C). • • On July 16, 2014, new Flood Insurance Rate Maps (FIRM) went into effect for Essex County as • part of the Federal Emergency Management Agency's (FEMA) National Flood Insurance Program • (NFIP). Due to these revisions, the proposed CHP project is now located in a Flood Zone AE • (EL. 14' NAVD88; EL 19.3' SESD). According to FEMA, this area/elevation is considered a • Special Flood Hazard Area (SFHA) subject to inundation by the 1%annual chance flood (i.e., • 100-year flood). Due to this change, the equipment pads for the CHP and other ancillary • equipment will be raised approximately 2-feet so that the equipment is located above this new • flood zone elevation. In order to maintain access to this equipment, it is anticipated additional fill • will also be required to raise the existing grade in this area. Since this portion of the site is • located within Land Subject to Coastal Storm Flowage, and not Inland - Bordering Land Subject • to Flooding (BLSF), no compensatory flood storage is required. 4.0 SUMMARY OF IMPACTS • As discussed previously, portions of the proposed project will be located in a Special Flood • Hazard Area (SFHA) subject to inundation by the 1 o annual chance flood (i.e., 100-year • flood/Land Subject to Coastal Flowage) and within the 100-foot Buffer Zone to the Coastal Bank • associated with Cat Cove as protected under the Massachusetts Wetlands Protection Act • (M.G.L., c. 131, s. 40), its implementing Regulations (310 CMR 10.00), and the City of Salem • Wetlands Protection and Conservation Ordinance (Chapter 50). • • A-2 • • • • • • • However, all of the proposed work will occur in previously developed areas and no wetland • resource areas will be impacted. Although the project will result in a small amount of new • impervious surface, the project has been designed to meet the MassDEP Stormwater • Management Standards. • • It should be noted that the MassDEP Waterways Program has already reviewed the proposed • project and determined that the proposed CHP facility represents an insignificant deviation from • the existing Chapter 91 License (DEP 3455) issued to the SESD that include the site of this • project. As a result, DEP has determined that proposed project falls within the minor modification • standards pursuant to 310 CMR 9.22(3)(a) and does not require the submission of a M.G.L. • Chapter 91 license application (see Attachment E). 5.0 MINIMIZATION OF ADVERSE IMPACTS • As previously discussed, to accomplish the necessary 2-foot equipment elevation increase, a • combination of raising the grades with fill and raising the concrete equipment pads will be • performed. • • Sediment and erosion controls will be installed along the nearby resource areas as well as any • nearby catchbasins that may discharge to the resource area. These sediment and erosion • controls will also represent the downgradient limit of work beyond which no construction will be • permitted, thereby providing additional protection to the nearby resource area. Dumping of spoils • material, waste, or other debris into wetland resource areas and/or buffer zones will not be • allowed. • • 6.0 CONCLUSION • The proposed CHP project will not result in any direct impacts to wetland resource areas, and • although some of the proposed work will be located within the 100-foot buffer zone, all of the work • will occur in previously developed areas. • • With the installation of proposed CHP facility, SESD will be able to decrease energy usage while • increasing the facility's operational efficiency and sustainability. Both EPA and MassDEP heavily • promote the use of CHP due to its positive environmental and economic benefits. • • • • • • A-3 • • • • • • • • • • • • • • • Attachment B — Site Locus Map • • • • • • • • • • • • • • • • • • • • • • • • • • o°a. 5 �f • �e'3 �-PAecabGPark rf Rexrrly c j Flnrbor � 'c �.:(• r � 111 �� Q�''�S/�� .. 1 Fey 1��.mia' '/. �rG �., •`9�'j ,< • ,/\/ ` O ,1brflt Rinrr O "a �'-• Approximate • �� o ��.��w r` �� _ Project Location • its/a`�' �r�Ch 9 j J�� @ �r �r .Pa �l e 1�1- • r � .� /� rG7 4 �� W / 1 . • .irk= ` I ~ N ice", (Ge G� J • 7 J— Salem • IRT-1,14. `o_ n IJL- • � �� j Peabotly�Sf� �i>� `� U • 1` 1.^Efw`"fit` H %�c� �'J�� r i`� ,C 5t., • -.�,\ BLCeear:Sl N,. II�1 tsl t. 'LSI t Hnrbor •'�J.1n"rh��\\��.....��n {� a \pVpaY F\ )I JI • ih° e ` { —IIenGMk Sl '_" 'i\ ("``�, _ ,.,1C1`.t 1 I 1 ��Cel;Nelte�V,4 1 I 0'0" I v de � • f 1 l� r.- �Polmu Point i'( � C(� r+ Ila •9 `."/W f r". Oc`an-n '{F�i ,^\�` , lr un. r aj E : �`. / J� �'" ✓� `lY:` 4 arts J Forest ftwer •� �� / �_.� �} 1� `, Park t e �y4Y - Wow Combined Heat and Power P Facility Project „ •Z Salem, MA W+ Figure 1: Locus Map •Q South Essex Sewerage District A=COM .`, • • • • • • • • • • Attachment C — Project Plans • • • • • • • • • • • • • • • • • • • • • • • �I • • • 2 3 4 5 • ¢ < CL • F~- - • U UJ - co -- --- - t • OPERATIONS AND _ 2-1" PVC coaTEo 4'J MAINTENANCE BUILDING RES ELECTRICAL CONDUIT I. SECONDARY ;.,f C ROUTED WITH 4" GAS. INFLUENT L • OXYGEN BUILDING O J 'o p \� REACTORS I Q uJ _ • I - u' I SECONDARY CLARIFIERS O c a T i 0 • m \ •• ' -- _---- __- -\- r_ INSTALL CONCRETEANCHOR 3 FT ROM TUR PENETRATION, TYP EACH END IN ACCORDANCE I WITH PIPING SYSTEM ,--' - -- c • MANUFACTURER'S RECOMMENDATIONS - -1 - DIST. BOX I i • ❑ Ll ❑ ) 6 • 1f «,—_ . - R _ --- --- - - I 4" FACTORYPRIMED. SCHI 40 BLACK 6 - - -- \ - - -- STEEL GAS GAS sERNCE TO CHP UNIT -� 5� � \\tee HWS k^HWR. --- _t" PVC B —BD —O _DJ ° C • C c ! \ � COATED RG EXISTING.CHEMICAL \\\�-�i' 1 1261 CL GAS AND CONDUIT. 100 FOOT BUFFER ZONE „ • - FEED PIPING \E 1[ \\\ - DUCT BANK TRANSFORMER AND NEUTRAL I n EXISTING _ o `\�� GROUNDING RESISTOR. 'L 11 CHLORINATION \ BUILDING .HEAT DUMP - • ] .: RADIATOR _ t Q L/— = .•. t-7— 4" UR - _ -_IulFAN CHLORINE CONTACT TANK BLDG. • _ � — _ -- / 1/ CTBANK A f \ .. /. _ E%ISTING DU .. � BURIED )9.3 _.._ _ y rJ I N / TO HVMH-8 ''"2�\ y _ • _ _ - —_ -- - ' ./ �EXHAUST STACK .../ EXISTING � I • - L - % N_1 I\ '__I UNDERDRAIN SYSTEM 6 PERP. PVC DRAIN 1• ❑. -_-.-- \\ c • - .. �/ _ _'- � n,"-. _ // _ IN STONE TRENCH92 • _ RV DUMP I _"-- -- '- - - AREA - --.nj `'E, • / e. � OXIDATION CATALYST �:• ACOUSTIC Q�• - - ._ ---_.. _ \ - - ALL STIC W - \ • - _ _ _ ❑ � NO LU • - COMBINED HEAT AND POWER • „/� (CHP) ErvaosuRE \ .. . - " '�_____ •.. `n o WORK LIMITS TOP OF. FLOOD ZONE AS • ./ - COASTAL BANK _ (ELEV 19.3 S(EUEV 14 SD)) OV NOTES: .^ 1. WHEN THE CONTRACTOR PROPOSES EQUIPMENT WHICH REQUIRES AN ARRANGEMENT DIFFERING FROM THAT INDICATED _ ON THE DRAWINGS OR SPECIFIED, PREPARE AND SUBMIT FOR RENEW DETAILED STRUCTURAL, MECHANICAL AND i PRQIEC.NO 60247224 F ._ --- ELECTRICAL DRAWINGS AND EQUIPMENT 9LISTS.0DYI UTILITIES CONSUMPTION SCHEDULE AND OPERATING SES TCTIONS. CAO Owc FILE C-103 • ' o ❑ - - SHOWING NECESSARY CHANGES AND EMBODYING SPECIAL FEATURES OF THE EQUIPMENT HE PROPOSES TO FURNISH. _ --- DESIGNED BY: MCUPP/M MAKE CHANCES, IF ACCEPTED, AT NO ADDITIONAL COSI TO THE DISTRICT. - _ DRAWN• M.CURPAN - - 2. THE VERTICAL DATUM DEPICTED HEREON IS BASED UPON SOUTH ESSEX SEWERAGE DAVM. STARLING BENCHMARK DEPT CHECK --- o ELEVATION = 2].82', DESIGNATED AS BM-e, CHISELED % ON DOOR SILL AT SC2 BUILDING. - PROD CHECK: R.SNIDER ,� 1 ELEVATIONS ARE SESD DATUM WHICH IS MEAN LOW WATER (MEW) AND Is 446' BELOW USGs MEAN SEA.LEVEL (MSL) DATE, SEPT.2014• 6 N �� PLN DATUM. SCALE: AS NOTED CSCXE I"-20 0 20 40 60 • oCLEFT - 20 C-3 SCALE LET OF • 1 2 3 e + 5 • 2 3 4 5 Q • ti � oov U Tv • � }VV • - AND GATES TRANCE/EXIT Of _ 1 W o d • , v n n r- = or - G J • D t2E D FORT AVENUE O of • O ` 5 \ m R FORT AVENUE • • PESLM_- q � ,.L . `a _ K n INFLUENT PUMP�w1 o z ' C �s�Pc els}I o f STATION mo{} — • In m 1 m r LI l ) I- w �o LEE • z OPERATIONS AND ❑� ® ❑❑ I 0@;^ • SLUDGE LL PRIMARY CLARIFIER w ° MAINTENANCE BUIm LDING ® _ P 2' GRIT -PROCESS - (BELOW GRADE) > ®� m r ' BUILDING BUILDING Of a Co ® .© z SECONDARY w • (OPERATIONS a s ' OST1 ® a CLARIFIERS ? # BUILDING) a _� OXYGEN C OIL.• o � REACTORS o z w O ODOR m„ °DIST.. > oaY _ CONTROL oBOX o ® �❑ Q • -,4 ° LLJo 0 100 FOOT o U • ° ® \ zZONE BUFFER UO ■ ■ O U �Q�■ RINATION CHILD ® ® ® LDING am ❑� w I • \ Ire � BUI "'e o o p ®l E LJ O M63 ®, o�� ELECTRIC < S BLDG a ODOR SCRUBBERS ® / ° ._ _ FAN CHLORINE '/✓//z _ BLDG CONTACT TANKS I • *y-o' w 11 Li ,n �t ®1 a / (BURIED) O a • � X7 ® �w.' �"' `�' ®�, oho ®" ®�"nd. IL�}I� wo,�2 ._ _ -_ _ J -..I I M$1 *E .,T`3,�. SALEM NECK • \ o k �UMP STATION o PLANT\ TDP of OWER P °m • B - \ �\ \ \O COASTAL BANK - - / < Q B ❑ V / LL J „O PROPOSED COMBINED MEAT • (\j//J`/�`f�� \\ AND POWER FACIlf1Y LOCATION O u a Z • FLOOD ZONE AE (ECFV 14 NAYD68. ElEV 19.3 SESD) (SEE NOTE 1) J ¢� o N = LE1 0 Z ( SALEM H. A R BOR ) \ S M I T H P 0 0 L o Oooi o i /x U e ' A J, PROJECT NO. 6D447221 A • _ .. _ {� CPD DWG BY G-101 BY 4 DESIGNED - MLIIflRPN NI DRAWN BY MCDRRAN $ 0 1. A PORTION OF THE SUBJECT PROPERTY IS LOCATED IN FLOOD ZONE X. ARF/S ' s - y{pp DEFT cHECN: ____ DEIERMINED TO BE OUTSIDE THE 0.2E ANNUAL CHANCE FLOODPUNN. A PORTION OF THE C PROs CHECk. R,SNYDER E PROPERTY IS LOCATED WITHIN FLOOD ZONE AE (FLOOD ELEVATION 14VD88). MFRS f & 9 - Nq DATE SEPT.2014 • v SUBJECT TO INUNDARON BY THE tE ANNUAL CHANCE FLOODPWN PER FEMA FLOOD - INSURANCE RATE MAPS NUMBER 25009C04191D AND 25009CO438G DATED JULY 16, 2014. p SCALE: AS NOIED 0 60 120 180 = 64 9 a 2 1 G-2 SCNI£ FEET SHEET OT so 1 2 3 4 5 • • • • • • • • • • • • • • • Attachment D - Abutter Information • • List of Abutters • Notice to Abutters • Affidavit of Service • • • • • • • • • • • • • • • • • • • • • • • • AFFIDAVIT OF SERVICE • Under the Massachusetts Wetlands Protection Act • (to be submitted to the Massachusetts Department of • Environmental Protection and the Conservation Commission when filing a Notice of Intent) • • I, Robert B. Adams, hereby certify under the pains and penalties of perjury that on September 11. • 2014 notification was sent to abutters in compliance with the second paragraph of the • Massachusetts General Laws Chapter 131, Section 40, and the DEP Guide to Abutter Notification dated April 8, 1994, in connection with the following matter: • • A Notice of Intent is being filed with the Salem Conservation Commission under the • Massachusetts Wetlands Protection Act (M.G.L., c. 131, s. 40), its implementing Regulations • (310 CMR 10.00), and the City of Salem local ordinance, Chapter 50 Wetlands Protection and • Conservation, to construct a combined heat and power facility adjacent to the wastewater • treatment plant located at 50 Fort Avenue in Salem, MA. • • The form of the notification, and a list of the abutters to whom it was given and their addresses, • are attached to this Affidavit of rvice. • • • 9-ii- Iq • Robert B. Adams, P.E. Date • Associate Vice President • AECOM Technical Services, Inc. • • • • • • • • • • • • • II • • • • • • LIST OF ABUTTERS • • • Owner: Footprint Power Salem • Address: 24 Fort Avenue Property ID: 41_0271_0 • Book& Page: 23825-102 • • Owner: Mass. Department of Conservation & Recreation • Address: 80 Fort Avenue • Property ID: 44_0037_0 • Book & Page: 5521-624 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • NOTIFICATION TO ABUTTERS UNDER THE MASSACHUSETTS WETLAND PROTECTION ACT . In accordance with the second paragraph of Massachusetts General Laws Chapter 131, Section 40, and the DEP Guide to Abutter Notification (8 April 1994),you are hereby notified of the following: • A. The name of the applicant is the South Essex Sewerage District(SESD), c/o Alan Taubert Jr., PE B. The applicant has filed a Notice of Intent with the Conservation Commission for the municipality of Salem MA seeking permission to install a combined heat and power(CHP)facility • and appurtenant structures at the SESD WWTF. The proposed project involves portions of work within the 100-foot Buffer Zone. However, no • impacts will occur within wetland resource areas. C. The location of the proposed activity is located at 50 Fort Avenue in Salem.Massachusetts. • D. Copies of the Notice of Intent may be examined at the Salem Conservation Commission office at City Hall Annex, 120 Washington Street, 3rd Floor, Salem, MA 01970 on the following days of the week: Monday through Wednesday (8 am—4 pm), Thursday (8 am— 7 pm), and Friday (8 am— 12 Pte' E. Copies of the Notice of Intent may be obtained from either (check one) the Applicant , or the • applicant's Representative X , by calling this telephone number 781-224-6626 between the hours • of 8 am and 5 pm on the following days of the week: Monday through Friday. F. Information regarding the date, time, and place of the public hearing may be obtained from at the . Salem Conservation Commission office at City Hall Annex, 120 Washington Street • Salem, MA 01970 or by calling this telephone number: (978) 619-5682. NOTE: Notice of public hearing, including its date, time, and place, will be published at least five (5) • days in advance in the Salem News newspaper. NOTE: Notice of the public hearing, including its date, time, and place, will be posted at the Salem • Conservation Commission office not less than forty-eight (48) hours in advance. NOTE: You may also contact the Salem Conservation Commission (Tom Devine) at(978) 619-5685 or the nearest Department of Environmental Protection Regional Office for more information about this • application or the Wetlands Protection Act. To contact DEP,call: Northeast Region: 978-694-3200. i, � • • • • • • • • • • • • • • • • • • Attachment E - Agency Correspondence • • • • • • • • • • • • • • • • • • • • • I• • o Commonwealth of Massachusetts • Executive Office of Energy &Environmental Affairs Department of Environmental Protection • One Winter,Street Boston,.MA 02108 617.292 5500. DEVAL L PATRICKRICHARD 7C.aULUVAN JF, • Go'd suet - .... .. ... . . -,.. Secretary _ .. • TIMOTHY P.MURRAY KENNETH L.KIMMELL Lsuvanunt Uovertlor commissioner • March 20, 2013 Arthur A. Knight,Jr., P.E., Executive Director y �/ South Essex Sewerage District i, ` • 50 Fort Avenue f,1ID 113 P.O. Box 989 . Salem, MA 01970 RE:Request fo'r Minor Project Modification,South Essex Sewerage District, License Number DEP 3455 Cat Cove,Salem, Essex County • Dear Mr. Knight: The Massachusetts Department of Environmental Protection Waterways Program (the"Department') has received your request for a Minor Project Modification (MPM), pursuant to 310 CMR 9.22(3) (a), on • behalf of the current Licensee,South Essex Sewerage District, to install one or more concrete slabs for • the proposed,combined heat.and.power facility(CHP)and appurtenances; and installation of above • ground and underground utility connections from the CHP facility to the existing heating and electrical • systems of the treatment plant in the City of Salem. . The submission includes: 1) A letter from A.A. Knight,Jr., P.E.to Ben Lynch, dated February.25, 2013 requesting an MPM, with an accompanying description of the project, and how the work otherwise complies with the • requirements of 310 CMR 9.22(3); • 2). Historical Chapter 91 license for the site and plans titled "-Plan Accompanying Petition of:South. Essex Sewerage District to construct Secondary Wastewater Treatment Facilities in Historic Tidelands in the Vicinity of Cat Cove of Salem Harbor in the City of Salem, County of-Essex, • Massachusetts. February 1993; 4 sheets." Also a partial site plan showing the location of the • proposed CHP facility;prepared by AECOM; dated September 2012; 1 sheet'. Based on the representations made in your memoranda and in reliance of the information contained • therein, the Department determines that the proposed action falls within the minor modification • standards pursuant to 310 CMR 9.22(3)(a) and does not require the submission of a M.G.L. c.91 license • application.The proposed installation of the CHP facility represents an insignificant deviation in terms of • This information Is available In alternate format.Call Michelle Waters-Ekanem,Diversity Director,at 617-292-5751,TDD#1-866.539-7622 or 1-617-574-6868 • MassDEP Website:w .mass.gov/dep • _ Printed on Recycled Paper • r -2- size, configuration, materials,and other relevant design or fabrication parameters of the original • referenced authorization. • The MassDEP will place this letter and the referenced submissions into the license file that originally • authorized said work on the project site. The proposed construction activities must conform to and be • consistent with all submitted documentation, as well as all other,relevant conditions of the original • authorization. Please be advised, however,that this Departmental action does not relieve or exempt • you of the requirement to obtain all other applicable local, state and federal authorizations necessary to perform said activities. • Questions concerning this matter should be directed to my office at(617) 654-6520.Thank you. Sincerely, David B.Slagle • Environmental Analyst • Waterways Regulation Program Cc: Salem Conservation Commission • Mass DEP c.91 License files � i • • • • • • STORMWATER REPORT • • • Combined Heat and Power Facility • Contract No. 11-3 • • Salem, MA • • • • • • Prepared for: • • • South Essex Sewerage District • • • • • • • • Prepared by: • • A=COM • • September 11 , 2014 • • • • • • • • • • • TABLE OF CONTENTS • Checklist for Stormwater Report •• 1 Project Description.............................................................................................................. 1 1.1 Existing Conditions........................................................................................................................1 • 1.2 Stormwater Runoff Modeling.........................................................................................................2 1.3 Proposed Stormwater Management System................................................................................2 • 1.4 Groundwater Infiltration.................................................................................................................3 • 1.5 Long-Term Pollution Prevention....................................................................................................3 2 Construction Stormwater Pollution Prevention Plan............................................................ 3 • 2.1 Erosion and Sedimentation Control Practices ..............................................................................3 • 2.1.1 Stabilization Practices...............................................................................................................4 2.1.2 Structural Practices...................................................................................................................4 • 2.2 Other Controls...............................................................................................................................5 • 2.2.1 On-Site Activities.......................................................................................................................5 2.2.2 Spill Prevention and Containment.............................................................................................5 • 2.3 Inspection and Maintenance of Stormwater Controls...................................................................6 • 2.3.1 Inspections and Reporting ........................................................................................................6 2.3.2 Maintenance..............................................................................................................................6 • 2.4 SWPPP Updates and Availability..................................................................................................7 • • Appendix A Figures • Appendix B Site Plans Appendix C Soils Map • Appendix D HydroCAD Modeling Calculations • Appendix E TSS Removal and Stormwater Recharge Calculations • Appendix F Illicit Discharge Compliance Statement • • • • • • • • • • • • • • • • COMBINED HEAT AND POWER FACILITY TABLE OF CONTENTS • STORMWATER MANAGEMENT PLAN • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report • A. Introduction • • Important:When A Stormwater Report must be submitted with the Notice of Intent permit application to document filling out forms compliance with the Stormwater Management Standards. The following checklist is NOT a substitute for • on the computer, use only the tab the Stormwater Report (which should provide more substantive and detailed information) but is offered • key to move your here as a tool to help the applicant organize their Stormwater Management documentation for their cursor-do not Report and for the reviewer to assess this information in a consistent format. As noted in the Checklist, • use the return the Stormwater Report must contain the engineering computations and supporting information set forth in key, Volume 3 of the Massachusetts Stormwater Handbook. The Stormwater Report must be prepared and • VQ certified by a Registered Professional Engineer(RPE) licensed in the Commonwealth. The Stormwater Report must include: • The Stormwater Checklist completed and stamped by a Registered Professional Engineer(see • page 2) that certifies that the Stormwater Report contains all required submittals.' This Checklist is to be used as the cover for the completed Stormwater Report. • Applicant/Project Name • Project Address • Name of Firm and Registered Professional Engineer that prepared the Report • Long-Term Pollution Prevention Plan required by Standards 4-6 • Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan required • by Standard 82 • Operation and Maintenance Plan required by Standard 9 • In addition to all plans and supporting information, the Stormwater Report must include a brief narrative • describing stormwater management practices, including environmentally sensitive site design and LID • techniques, along with a diagram depicting runoff through the proposed BMP treatment train. Plans are • required to show existing and proposed conditions, identify all wetland resource areas, NRCS soil types, critical areas, Land Uses with Higher Potential Pollutant Loads (LUHPPL), and any areas on the site • where infiltration rate is greater than 2.4 inches per hour. The Plans shall identify the drainage areas for both existing and proposed conditions at a scale that enables verification of supporting calculations. • • As noted in the Checklist, the Stormwater Management Report shall document compliance with each of the Stormwater Management Standards as provided in the Massachusetts Stormwater Handbook. The • soils evaluation and calculations shall be done using the methodologies set forth in Volume 3 of the • Massachusetts Stormwater Handbook. •. To ensure that the Stormwater Report is complete, applicants are required to fill in the Stormwater Report • Checklist by checking the box to indicate that the specified information has been included in the Stormwater Report. If any of the information specified in the checklist has not been submitted, the • applicant must provide an explanation. The completed Stormwater Report Checklist and Certification • must be submitted with the Stormwater Report. • • ......................... • 'The Stormwater Report may also include the Illicit Discharge Compliance Statement required by Standard 10. If not included in the Stormwater Report,the Illicit Discharge Compliance Statement must be submitted prior to the discharge of storrnwater runoff to • the post-construction best management practices. • 'For some complex projects,it may not be possible to include the Construction Period Erosion and Sedimentation Control Plan in the Stormwater Report. In that event,the issuing authority has the discretion to issue an Order of Conditions that approves the project and includes a condition requiring the proponent to submit the Construction Period Erosion and Sedimentation Control Plan • before commencing any land disturbance activity on the site. • • swcheck•04/01/08 Stormwater Report Checklist•Page 1 of 8 • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program 0 Checklist for Stormwater Report B. Stormwater Checklist and Certification • The following checklist is intended to serve as a guide for applicants as to the elements that ordinarily need to be addressed in a complete Stormwater Report. The checklist is also intended to provide • conservation commissions and other reviewing authorities with a summary of the components necessary • for a comprehensive Stormwater Report that addresses the ten Stormwater Standards. • Note: Because stormwater requirements vary from project to project, it is possible that a complete • Stormwater Report may not include information on some of the subjects specified in the Checklist. If it is determined that a specific item does not apply to the project under review, please note that the item is not • applicable (N.A.) and provide the reasons for that determination., • A complete checklist must include the Certification set forth below signed by the Registered Professional • Engineer who prepared the Stormwater Report. • Registered Professional Engineer's Certification • 1 have reviewed the Stormwater Report, including the soil evaluation, computations, Long-term Pollution • Prevention Plan, the Construction Period Erosion and Sedimentation Control Plan (if included), the Long- term Post-Construction Operation and Maintenance Plan, the Illicit Discharge Compliance Statement (if included) and the plans showing the stormwater management system, and have determined that they • have been prepared in accordance with the requirements of the Stormwater Management Standards as further elaborated by the Massachusetts Stormwater Handbook. I have also determined that the • information presented in the Stormwater Checklist is accurate and that the information presented in the • Stormwater Report accurately reflects conditions at the site as of the date of this permit application. • Registered Professional Engineer Block and Signature • • tH of MAS • RADS• yN CML • e IM4E5% • 9O 1 • ignature and Date • • • Checklist • Project Type: Is the application for new development, redevelopment, or a mix of new and redevelopment? • • ® New development • ❑ Redevelopment • ❑ Mix of New Development and Redevelopment � • • • swcheck•04/01/08 Stormwater Report Checklist•Page 2 of 8 • 0 • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program • • Checklist for Stormwater Report Checklist (continued) -• LID Measures: Stormwater Standards require LID measures to be considered. Document what environmentally sensitive design and LID Techniques were considered during the planning and design of • the project: • • ® No disturbance to any Wetland Resource Areas • ❑ Site Design Practices (e.g. clustered development, reduced frontage setbacks) ❑ Reduced Impervious Area (Redevelopment Only) • ® Minimizing disturbance to existing trees and shrubs • ❑ LID Site Design Credit Requested: • ❑ Credit 1 • • ❑ Credit 2 • ❑ Credit 3 ❑ Use of"country drainage"versus curb and gutter conveyance and pipe • ❑ Bioretention Cells (includes Rain Gardens) • ❑ Constructed Stormwater Wetlands (includes Gravel Wetlands designs) ❑ Treebox Filter r- • ❑ Water Quality Swale • ❑ Grass Channel ❑ Green Roof • ❑ Other (describe): • • • Standard 1: No New Untreated Discharges • ® No new untreated discharges • ❑ Outlets have been designed so there is no erosion or scour to wetlands and waters of the • Commonwealth • ❑ Supporting calculations specified in Volume 3 of the Massachusetts Stormwater Handbook included. • • • • swcheck•04/01/08 Stormwater Report Checklist•Page 3 of 8 j • t • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program • Checklist for Stormwater Report • Checklist (continued) • Standard 2: Peak Rate Attenuation • ® Standard 2 waiver requested because the project is located in land subject to coastal storm flowage • and stormwater discharge is to a wetland subject to coastal flooding. ❑ Evaluation provided to determine whether off-site flooding increases during the 100-year 24-hour • storm. • ❑ Calculations provided to show that post-development peak discharge rates do not exceed pre- development rates for the 2-year and 10-year 24-hour storms. If evaluation shows that off-site flooding increases during the 100-year 24-hour storm, calculations are also provided to show that • post-development peak discharge rates do not exceed pre-development rates for the 100-year 24- hour storm. • Standard 3: Recharge • ® Soil Analysis provided. • • ® Required Recharge Volume calculation provided. • ❑ Required Recharge volume reduced through use of the LID site Design Credits. • ❑ Sizing the infiltration, BMPs is based on the following method: Check the method used. • ❑ Static ❑ Simple Dynamic ❑ Dynamic Field' • ® Runoff from all impervious areas at the site discharging to the infiltration BMP. • ❑ Runoff from all impervious areas at the site is not discharging to the infiltration BMP and calculations • are provided showing that the drainage area contributing runoff to the infiltration BMPs is sufficient to • generate the required recharge volume. • ❑ Recharge BMPs have been sized to infiltrate the Required Recharge Volume. • ❑ Recharge BMPs have been sized to infiltrate the Required Recharge Volume only to the maximum • extent practicable for the following reason: • ❑ Site is comprised solely of C and D soils and/or bedrock at the land surface • ❑ M.G.L. c. 21E sites pursuant to 310 CMR 40.0000 ❑ Solid Waste Landfill pursuant to 310 CMR 19.000 • ❑ Project is otherwise subject to Stormwater Management Standards only to the maximum extent practicable. • ❑ Calculations showing that the infiltration BMPs will drain in 72 hours are provided. ❑ Property includes a M.G.L. c. 21 E site or a solid waste landfill and a mounding analysis is included. • ' 80%TSS removal is required prior to discharge to infiltration BMP if Dynamic Field method is used. • • swcheck•04/01/08 Stormwater Report Checklist•Page 4 of 8 • 0 • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program • Checklist for Stormwater Report • • Checklist (continued) • Standard 3: Recharge (continued) • ❑ The infiltration BMP is used to attenuate peak flows during storms greater than or equal to the 10- year 24-hour storm and separation to seasonal high groundwater is less than 4 feet and a mounding • analysis is provided. • ❑ Documentation is provided showing that infiltration BMPs do not adversely impact nearby wetland resource areas. • Standard 4: Water Quality • • The Long-Term Pollution Prevention Plan typically includes the following: • Good housekeeping practices; • • Provisions for storing materials and waste products inside or under cover; • • Vehicle washing controls; Requirements for routine inspections and maintenance of stormwater BMPs; • • Spill prevention and response plans; • • Provisions for maintenance of lawns, gardens, and other landscaped areas; • Requirements for storage and use of fertilizers, herbicides, and pesticides; • Pet waste management provisions; • • Provisions for operation and management of septic systems; Provisions for solid waste management; • • Snow disposal and plowing plans relative to Wetland Resource Areas; • • Winter Road Salt and/or Sand Use and Storage restrictions; • Street sweeping schedules; • • Provisions for prevention of illicit discharges to the stormwater management system; • • Documentation that Stormwater BMPs are designed to provide for shutdown and containment in the event of a spill or discharges to or near critical areas or from LUHPPL; • • Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan; • 0 List of Emergency contacts for implementing Long-Term Pollution Prevention Plan. • ❑ A Long-Term Pollution Prevention Plan is attached to Stormwater Report and is included as an attachment to the Wetlands Notice of Intent. • ❑ Treatment BMPs subject to the 44%TSS removal pretreatment requirement and the one inch rule for • calculating the water quality volume are included, and discharge: • ❑ is within the Zone II or Interim Wellhead Protection Area • ❑ is near or to other critical areas ❑ is within soils with a rapid infiltration rate (greater than 2.4 inches per hour) . • ❑ involves runoff from land uses with higher potential pollutant loads. • ❑ The Required Water Quality Volume is reduced through use of the LID site Design Credits. • ® Calculations documenting that the treatment train meets the 80%TSS removal requirement and, if • applicable, the 44%TSS removal pretreatment requirement, are provided. • y • • • swcheck•04/01/08 Stormwater Report Checklist•Page 5 of 8 • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program • Checklist for Stormwater Report • Checklist (continued) • Standard 4: Water Quality (continued) • ❑ The BMP is sized (and calculations provided) based on: ❑ The Yi'or 1"Water Quality Volume or • ❑ The equivalent flow rate associated with the Water Quality Volume and documentation is provided showing that the BMP treats the required water quality volume. • ❑ The applicant proposes to use proprietary BMPs, and documentation supporting use of proprietary BMP and proposed TSS removal rate is provided. This documentation may be in the form of the • propriety BMP checklist found in Volume 2, Chapter 4 of the Massachusetts Stormwater Handbook and submitting copies of the TARP Report, STEP Report, and/or other third party studies verifying • performance of the proprietary BMPs. • ❑ A TMDL exists that indicates a need to reduce pollutants other than TSS and documentation showing • that the BMPs selected are consistent with the TMDL is provided. • Standard 5: Land Uses With Higher Potential Pollutant Loads (LUHPPLs) • ❑ The NPDES Multi-Sector General Permit covers the land use and the Stormwater Pollution Prevention Plan (SWPPP) has been included with the Stormwater Report. • ❑ The NPDES Multi-Sector General Permit covers the land use and the SWPPP will be submitted prior • to the discharge of stormwater to the post-construction stormwater BMPs. • ❑ The NPDES Multi-Sector General Permit does not cover the land use. • ❑ LUHPPLs are located at the site and industry specific source control and pollution prevention • measures have been proposed to reduce or eliminate the exposure of LUHPPLs to rain, snow, snow melt and runoff, and been included in the long term Pollution Prevention Plan. • • ❑ All exposure has been eliminated. • ❑ All exposure has not been eliminated and all BMPs selected are on MassDEP LUHPPL list. • ❑ The LUHPPL has the potential to generate runoff with moderate to higher concentrations of oil and • grease (e.g. all parking lots with >1000 vehicle trips per day) and the treatment train includes an oil • grit separator, a filtering bioretention area, a sand filter or equivalent. • Standard 6: Critical Areas • ❑ The discharge is near or to a critical area and the treatment train includes only BMPs that MassDEP • has approved for stormwater discharges to or near that particular class of critical area. • ❑ Critical areas and BMPs are identified in the Stormwater Report. • • • • • • swcheck•04/01/08 Sto"water Report Checklist•Page 6 of 8 • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program • Checklist for Stormwater Report • • Checklist (continued) Standard 7: Redevelopments and Other Projects Subject to the Standards only to the maximum extent practicable • ❑ The project is subject to the Stormwater Management Standards only to the maximum Extent • Practicable as a: • ❑ Limited Project • El Small Residential Projects: 5-9 single family houses or 5-9 units in a multi-family development provided there is no discharge that may potentially affect a critical area. • ❑ Small Residential Projects: 2-4 single family houses or 2-4 units in a multi-family development • with a discharge to a critical area ❑ Marina and/or boatyard provided the hull painting, service and maintenance areas are protected • from exposure to rain, snow, snow melt and runoff ❑ Bike Path and/or Foot Path • ❑ Redevelopment Project • • ❑ Redevelopment portion of mix of new and redevelopment. • ❑ Certain standards are not fully met (Standard No. 1, 8, 9, and 10 must always be fully met).and an explanation of why these standards are not met is contained in the Stormwater Report. • ❑ The project involves redevelopment and a description of all measures that have been taken to • improve existing conditions is provided in the Stormwater Report. The redevelopment checklist found in Volume 2 Chapter 3 of the Massachusetts Stormwater Handbook may be used to document that • the proposed stormwater management system (a) complies with Standards 2, 3 and the pretreatment • and structural BMP requirements of Standards 4-6 to the maximum extent practicable and (b) improves existing conditions. • Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control • • A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan must include the following information: • 0 Narrative; • Construction Period Operation and Maintenance Plan; • Names of Persons or Entity Responsible for Plan Compliance; • 0 Construction Period Pollution Prevention Measures; • Erosion and Sedimentation Control Plan Drawings; • Detail drawings and specifications for erosion control BMPs, including sizing calculations; • • Vegetation Planning; • Site Development Plan; • • Construction Sequencing Plan; • • Sequencing of Erosion and Sedimentation Controls; • Operation and Maintenance of Erosion and Sedimentation Controls; • Inspection Schedule; • • Maintenance Schedule; • • Inspection and Maintenance Log Form. ® A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan containing • the information set forth above has been included in the Stormwater Report. • • swcheck•04/01/08 Stormwater Report Checklist•Page 7 of 8 • • • • Massachusetts Department of Environmental Protection • Bureau of Resource Protection - Wetlands Program • Checklist for Stormwater Report • • Checklist (continued) • Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control • (continued) • ❑ The project is highly complex and information is included in the Stormwater Report that explains why • it is not possible to submit the Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan with the application. A Construction Period Pollution Prevention and • Erosion and Sedimentation Control has not been included in the Stormwater Report but will be • submitted before land disturbance begins. • ® The project is not covered by a NPDES Construction General Permit. • ❑ The project is covered by a NPDES Construction General Permit and a copy of the SWPPP is in the • Stormwater Report. • ❑ The project is covered by a NPDES Construction General Permit but no SW PPP been submitted. The SW PPP will be submitted BEFORE land disturbance begins. • Standard 9: Operation and Maintenance Plan • ® The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and • includes the following information: • ® Name of the stormwater management system owners; • ® Party responsible for operation and maintenance; • • ❑ Schedule for implementation of routine and non-routine maintenance tasks; • ❑ Plan showing the location of all stormwater BMPs maintenance access areas; ❑ Description and delineation of public safety features; • ❑ Estimated operation and maintenance budget; and • ❑ Operation and Maintenance Log Form. • ❑ The responsible party is not the owner of the parcel where the BMP is located and the Stormwater • Report includes the following submissions: . ❑ A copy of the legal instrument (deed, homeowner's association, utility trust or other legal entity) that establishes the terms of and legal responsibility for the operation and maintenance of the • project site stormwater BMPs; • ❑ A plan and easement deed that allows site access for the legal entity to operate and maintain • BMP functions. • Standard 10: Prohibition of Illicit Discharges • ❑ The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges; ® An Illicit Discharge Compliance Statement is attached; • ❑ NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of any stormwater to post-construction BMPs. • • • swcheck•04/01/08 Stormwater Report Checklist•Page 8 of 8 • • • • • • • 1 Project Description • The South Essex Sewerage District(SESD) owns and operates a regional wastewater treatment plant • (WWTP) located at 50 Fort Avenue in Salem, MA (Attachment B). The WWTP services the adjacent communities of Peabody, Salem, Beverly, Danvers, Marblehead, a portion of Middleton, as well as, • several other entities including a state correctional facility. • The proposed project involves the installation of a Combined Heat and Power(CHP)facility at the • District's WWTP. CHP facilities, also known as cogeneration facilities, are used to simultaneously generate efficient, clean, and reliable electricity and useful heat. With the installation of the proposed • CHP facility, SESD will be able to decrease its overall energy usage. • The proposed CHP facility has been designed as a pre-packaged, skid-mounted system. The CHP • package will include a 1.5 Megawatt (MW), natural gas fired, internal combustion engine generator • enclosed within a sound attenuated container having approximate dimensions of 50-feet long, 12-feet wide, and 15-feet high • • The area surrounding the CHP equipment will be paved with bituminous pavement. The footprint of impervious area will be approximately 3,550 square feet. The pavement will be sloped so that stormwater • will sheet flow to an infiltration trench filled with crushed stone. The infiltration trench will provide an • effective means of storage and infiltration for the collected stormwater runoff and will meet the MassDEP Stormwater Management Standards • • Further details on the stormwater management measures to be implemented as part of this project is provided in the following sections. In addition, a construction Stormwater Pollution Prevention Plan • (SWPPP) is provided in Section 2.0 to implement best management practices for erosion and sediment • control during construction activities. • 1.1 Existing Conditions • The site of the proposed CHP facility is a small (0.16 ac), relatively flat grassed area (Subcatchment 5). • Stormwater from the site currently flows overland through a curb cut and then via sheet flow across the • perimeter roadway before draining to a catch basin (CB#20), which discharges to Salem Harbor. CB #20 also collects wet weather runoff from a portion of the roadway and other impervious areas adjacent to the • CHP site, as well as roof runoff collected from the oxygen reactor building (refer to Figure 2 - Existing • Conditions Drainage Plan in Appendix A). • As part of the analysis of pre-development conditions, available topographic and soils data were collected and analyzed.. Model parameters were then developed from these data and analyzed using the • hydrologic/hydraulic model to estimate pre-development flows. Under existing conditions, the area . draining to CB #20 is 51 percent impervious. • In order to assess pre-and post-construction runoff regimes and the efficiency of the proposed • stormwater management controls, the area of interest was divided into five drainage subcatchments. Stormwater runoff flows to one discharge location or compliance point(CP-1). • A WebSoil Survey(USDA) soil map for the study area is included in Appendix C. As shown on this map, • the project site is categorized as "urban land". For the purposes of this study, Hydrologic Soil Group C • was used in the stormwater runoff model (these soils have a slow rate of water transmission). • • • • • COMBINED HEAT AND POWER FACILITY 1 • STORMWATER MANAGEMENT PLAN • • • • • • • 1.2 Stormwater Runoff Modeling • HydroCAD stormwater modeling software was used to assess the changes in runoff within the project site • resulting from the proposed CHP facility at SESD's Wastewater Treatment Plant. HydroCAD, which is distributed by Applied Microcomputer Systems of Chocurua, NH, is essentially a proprietary version of • Technical Release No. 20: Computer Program for Project Formulation Hydrology (TR-20). TR-20 was developed by the USDA Soil Conservation Service (SCS), now called Natural Resources Conservation • Service (NRCS), and is one of the standard methods used for these types of analyses. HydroCAD • employs the TR-20 methodology for hydrograph generation and routing. Runoff hydrographs are • developed from rainfall using the dimensionless unit hydrograph, drainage areas, times of concentration, and SCS runoff curve numbers. • In order to meet the Massachusetts Stormwater Management Standards, several criteria must be • satisfied. Generally, stormwater management systems must be designed so that post-development peak • discharge rates do not exceed pre-development peak discharge rates for the 2-year and 10-year storm. Massachusetts regulations also stipulate that the 100-year 24-hour storm event must be evaluated to • demonstrate that there will be no increase in flooding impacts offsite. However, because the stormwater • discharge from the portion of the SESD site affected by the proposed project is to "...land subject to coastal storm flowage", the control of peak discharge rates is usually unnecessary and may be waived" • (MA Stormwater Handbook, Volume 1). As summarized below, the control of peak runoff from the • proposed CHP facility has been largely addressed using an infiltration BMP. • The HydroCAD model was developed for both the existing and future site conditions and evaluated for • the 2-, 10-, and 100-year 24-hour storm. Based on Technical Paper 40, the 2-, 10-, and 100-year 24-hour storms for this region have rainfall depths of 3.15, 4.80, and 6.80 inches, respectively. As part of the TR- 20 methodology, the design storm rainfall was distributed over 24-hours using a Soil Conservation Type • III Distribution. • The peak runoff under existing conditions from each drainage basin for the 2-, 10-, and 100-year storm is presented in Table 1. The HydroCAD model input and results for the existing conditions calculations are • provided in Appendix D. • • Table 1. Existing Conditions Model Results Peak Flow(cfs) Discharge Location 2-year 10-year 100-year • Com lianca Point CP • CP-1 1.23 2.07 3.12 • • 1.3 Proposed Stormwater Management System The drainage subcatchments for pre-development conditions were modified slightly to reflect the proposed site modifications, and the HydroCAD model was reconfigured accordingly to represent the • proposed post-development stormwater best management practices (BMPs). Following completion of the project, the site will consist of the CHP enclosure and ancillary equipment. Paved access to the new • facility will be provided from the southwest corner of the site (Figure 3, Appendix B). • Under post-construction conditions, runoff from the newly constructed CHP facility will drain to a nearby • infiltration trench. An infiltration trench is a shallow excavation filled with stone,typically designed to • capture sheet flow, which provides an effective means of storage and infiltration for stormwater runoff. The proposed infiltration trench will be designed to capture and infiltrate runoff from the 2-year storm • • COMBINED HEAT AND POWER FACILITY 2 • STORMWATER MANAGEMENT PLAN • • • • • • • before overflowing to the existing storm drain system. This BMP water quality treatment train will provide the required 80% removal of the annual average TSS load (Appendix E). Runoff from the undeveloped • grassed portion of the site (west of the CHP) will flow to the existing storm drain as under existing • conditions. • The subcatchment characteristics for the post-development conditions were input into the HydroCAD model. The future conditions modeling results are summarized in Table 2. These indicate that under • future conditions the peak runoff at CP-1 is predicted to remain the same during the 2- and 10-year • storms; while the peak discharge rate will increase slightly during the 100-year storm event. HydroCAD • model input and results for the future conditions are presented in Appendix D. • Table 2. Future Conditions Model Results • Peak Flow(cfs) • Discharge Location • Compliance Point CP) 2-Year 10-year 100-year • CP-1 1.23 2.06 3.45 • • 1.4 Groundwater Infiltration • Based on the modeling results of the proposed BMPs, the required recharge volume will infiltrate on-site. • Recharge volume calculations are provided in Appendix E. Recharge will occur in the proposed • infiltration trench. • 1.5 Long-Term Pollution Prevention • Regular maintenance will be performed on the filter strip to maintain effectiveness. Regular frequent • mowing of the grass will be conducted maintaining a height of 2 to 4 inches. The grass will be inspected • during mowing for signs of erosion, bare spots and overall health. 2 Construction Stormwater Pollution Prevention Plan • • A Construction Stormwater Pollution Prevention Plan (SW PPP) has been prepared in accordance with the requirements outlined in Volumes 1 and 2 of the Massachusetts Department of Environmental Protection (MassDEP) January 2008 Stormwater Handbook and the 1997 MassDEP document entitled • "Erosion and Sediment Control Guidelines for Urban and Suburban Areas: A Guide for Planners, Designers, and Municipal Officials". • • The SW PPP is submitted to the Salem Conservation Commission and MassDEP. The SW PPP will be updated as necessary to reflect new information prepared or obtained. 2.1 Erosion and Sedimentation Control Practices • During construction, the erosion and sedimentation control (ESC) measures and stormwater management practices described in this section will be employed to minimize erosion and sedimentation • of downgradient resources. Control measures will include stabilization measures for disturbed areas, and • structural controls to attenuate runoff and remove sediment. In addition to managing stormwater runoff and erosion, proper implementation of the following practices will help to ensure that precautionary • measures are taken to prevent accidental releases of fuels, lubricating fluids, or other hazardous • materials. • • COMBINED HEAT AND POWER FACILITY 3 • STORMWATER MANAGEMENT PLAN • • • • • • • 2.1.1 Stabilization Practices • Stabilization practices refer to the covering of exposed soils. This is one of the foremost preventative • measures for minimizing sediment discharges by reducing the energy of flowing water over the ground surface. Stabilization also allows for the increased infiltration of water into the ground surface for the • deposition of sediment prior to a discharge to receiving waters. The contractor will preserve natural • vegetation where it may occur, as much as possible, to minimize potential.erosion of soil during storm water runoff events. All disturbed vegetated areas will be restored to approximate existing conditions • wherever possible. • Stabilization of open soil surfaces will be implemented after grading or construction activities have • temporarily or permanently ceased, unless there is sufficient snow cover to prohibit implementation. Exposed areas and stockpiled soils will be covered or surrounded by straw wattles and/or silt fence to • prevent erosion or sedimentation of adjacent areas. Temporary seeding and mulching may be used to • minimize soil erosion and provide soil stabilization on slopes. On exposed slopes, erosion control blankets or anchored straw mulch may be applied alone or in combination with seeding to stabilize soils. • The contractor will properly store and/or cover any loose material, including spoils piles. Spoils piles shall • be located outside of wetland buffer zones to the maximum extent feasible. • 2.1.2 Structural Practices • • Structural practices involve the use of devices to divert, store, or limit runoff. These practices may be designed to limit the amount of stormwater entering a disturbed area or to trap sediment prior to the • stormwater leaving the site. • Straw Wattle. Straw Wattles, also known as straw worms, bio-logs, straw noodles, or straw tubes are • man-made cylinders of compressed, weed free straw (wheat or rice), 8 to 12 inches in diameter and 20 to • 25 feet long. They are typically encased in jute, nylon, or other photo degradable materials. Straw wattles will be installed to minimize the potential for erosion and siltation impacts to downgradient water • resource areas resulting from construction activities.The Contractor will be required to install straw wattles along construction areas that are within 100 feet of water resources. At this time, it is anticipated • that the straw wattles will be installed along the existing curb line adjacent to Cat Cove. The straw wattle • will also represent the downgradient limit of work beyond which no construction will be permitted,thereby • providing additional protection to nearby wetland resource areas. Straw wattles will be laid adjacent to each other, perpendicular to stormwater flow,to reduce flow velocity and soil erosion. They may also be • used on pavement as inlet protection for storm drains. • Silt Fence. Where applicable, silt fence will be installed to minimize the potential for erosion and siltation • impacts to downgradient wetland resource areas resulting from construction activities. Filter fabric for the silt fence shall be installed as recommended by the manufacturer except as otherwise directed. The • fabric shall be mounted on posts with or without fence backing as recommended by the fabric • manufacturer. The bottom 6-inches of the fabric shall be buried in one of three ways: by trenching; by laying the 6-inch section horizontally across the trench and burying; or by laying the 6-inch section • horizontally on the ground and burying by ramping the soil up to the fence. • Temporary Diversion Swales. If necessary, temporary diversion swales will be installed to minimize • erosion and sediment runoff.The primary function of the swales would be to divert runoff, where necessary, to temporary detention basins located along the perimeter of the site. Swales typically would • have a maximum channel slope of 2% and be adequately compacted to prevent failure. The minimum • height measured from the top of the swale to the bottom of the channel would be approximately 18 inches. The minimum base width would be 6 feet and the minimum top width 2 feet. Measures would be • taken to ensure that the diversion berms are not damaged by construction operations or traffic. When the • diversion swales are no longer required,they would be shaped to an acceptable grade. • • COMBINED HEAT AND POWER FACILITY 4 • STORMWATER MANAGEMENT PLAN • • • • • • • Temporary Sedimentation/Detention Basins. This practice allows for sedimentation of solids on-site prior to discharge. If required, the basins should be sized to capture runoff from the 90% rainfall event (WQv). Overland flow will be directed to the basins using temporary diversion swales, or some other approved • method of grading. The volume of runoff will be detained in the sedimentation basins for a sufficient period of time to allow suspended soil particles to settle. Where traditional sediment control measures • prove ineffective, flocculants should be considered. • Storm Drain Inlet. Existing and/or proposed catch basin inlets within or adjacent to the project area will • be protected with filter fabric or straw wattles. The filter fabric should be installed in the catch basin, or straw wattles around the catch basin prior to construction and be maintained throughout the construction • period. • Other Potential Structural Measures. If groundwater is encountered during excavation, dewatering may • be required. If needed, dewatering will be conducted in compliance with the general permit (EPA and • MassDEP) requirements, thereby minimizing potential impacts to adjacent resources. Any catch basins, drains, or outfalls to be used in dewatering operations shall be passed through filters, onsite • sedimentation basins, settling tank trucks, or other devices to ensure that no observable sediments or • pollutants are carried into any resource area, street drain, or adjacent property. Measures will be taken to ensure that no erosion or scouring shall occur on public or private property, or on the banks of water • bodies, as a result of dewatering operations. • 2.2 Other Controls General construction safety procedures will be followed to prevent events which could result in spills, releases, or other environmental damage. During construction, work locations will be secured to prevent • unauthorized entry and to protect existing and adjacent facilities and properties. Supplemental signs, construction barriers, etc. will be used as necessary to provide safety to construction workers and the • general public during the construction process in accordance with OSHA and other applicable • regulations. • At the end of every day, the contractor will clean waste material, debris, and trash, which will be disposed • off-site, and place it in trash barrels and/or dumpsters. Dumping of spoils material, waste, or other debris into wetland resource areas and/or buffer zones will not be allowed during construction. Dust generation • will be minimized by the use of water trucks. The contractor will perform dust control operations • whenever necessary or when directed by the site engineer. • 2.2.1 On-Site Activities • The contractor staging/lay down area associated with the proposed work will be used for several • purposes including, for example, parking; construction material storage; soil stockpiles; and portable • toilets. • 2.2.2 Spill Prevention and Containment • In order to prevent and minimize impacts to resource areas from accidental spills of oil and hazardous • material (OHM) on the site, the following measures and procedures will be implemented: • 1) No refueling or maintenance of construction vehicles or equipment shall occur within any • wetland or 100-foot buffer zone. To minimize the possibility of leakage of hydraulic fluid, all hydraulic lines on all construction equipment and vehicles will be inspected on a regular • basis. If any excessive wear is observed, the line will be repaired prior to further use. • 2) Spill containment equipment will be stored in equipment storage and refueling areas in an • easily accessible manner for use in the clean-up of accidental releases of fuel or other • hazardous materials. The contractor shall maintain a sufficient supply of oil absorbent pads, • COMBINED HEAT AND POWER FACILITY 5 • STORMWATER MANAGEMENT PLAN ' • 0 • • • • oil absorbent materials, containment booms, and appropriate 55-gallon drums for containerizing waste. All remediation generated as the result of a spill of OHM shall be stored, handled, and disposed of in accordance with all applicable state and federal • regulations. All reportable spills of OHM (as defined under 310 CMR 40.000) shall be reported to: • South Essex Sewerage District: 978-744-4550 • MassDEP: (888) 304-1133 • Salem Conservation Commission: 978-619-5685 2.3 Inspection and Maintenance of Stormwater Controls 2.3.1 Inspections and Reporting • To ensure proper functioning of erosion and sedimentation control structures, inspection of the following by the on-site construction manager and the resident engineer will be conducted at least every 14 calendar days, and within 24 hours after any storm event that produces site runoff: • The erosion and sedimentation control barriers; • Disturbed areas of the site that have not been stabilized; • The staging areas and material storage areas that are exposed to precipitation; and • Stock piles of soil, sand, or any other erodible material. • Areas that are permanently stabilized will be inspected once per month. If the inspections reveal the need for additional control devices to prevent erosion and sedimentation, the contractor will promptly • install additional protection devices as required. Staging areas will be inspected for evidence of, or the potential for, pollutants entering the drainage system. • Records of the inspections and repairs will be prepared and maintained on the site by the construction manager. The inspection reports will contain at a minimum: • Components and scope of the inspection • Names and qualifications of personnel conducting the inspection • Date of the inspection • Observations relating to the implementation of the SWPPP actions taken Incidents of non-compliance If no incidents of non-compliance are found, the report shall contain a certification that the facility is in compliance with the SW PPP and the permit. A record of each inspection will be retained with the i SW PPP for at least three years from the date that permit coverage expires. 2.3.2 Maintenance Storm water controls must be maintained in effective operating condition until all disturbed soils are permanently stabilized. Maintenance measures will include repairs of containment systems and erosion • controls as well as sediment removal from basins and roadways. Control devices in need of repair will be repaired promptly after identification. An adequate quantity of erosion control material will be stored on the site and under cover for emergency repairs and routine maintenance. Erosion control devices will be • maintained until all disturbed earth has been paved or vegetated, at which time they will be removed. After removal, areas disturbed by these devices will be regraded and seeded as necessary. • Straw wattles. Straw wattles should be inspected regularly, as well as after each rainfall event, to ensure that they are intact and the area behind the wattle is not filled with sediment. If there is excessive ponding behind the wattle or accumulated sediments reach the top of the wattle, an additional wattle should be • added on top or in front of the existing wattle in these areas, without disturbing the soil or accumulated • COMBINED HEAT AND POWER FACILITY 6 • STORMWATER MANAGEMENT PLAN • • sediment. If the wattle was overtopped during a storm event, the operator should consider installing additional wattles on top of the original, placing an additional wattle further up as needed. Silt Fence. Sediment will be periodically removed within fenced areas and legally disposed; in no case will the accumulated sediment be allowed to rise above the mid height of the silt fence. Silt fences will be • maintained or replaced until no longer necessary or are ordered removed by the site engineer. Unless • specifically authorized by the site engineer to be left in place, silt fences will be completely removed at the completion of the project. • Storm Drain Inlet. To maintain the capacity of the filter fabric or straw wattles, the accumulated sediment • will be monitored after large storm events. When the capacity is significantly reduced, the accumulated • sediment will be removed and the fabric or silt socks will be reinstalled. • Temporary Sedimentation/Detention Basins. These structures should function in accordance with the • approved design details submitted by the Contractor and approved by the Engineer. Temporary sediment basins will be kept dry between rain events, repaired as needed, and cleaned out on a regular • basis, to maintain the required storage volume. Sediment will be removed from the temporary basins • whenever their capacity has been reduced by fifty (50) percent from the design capacity. Removed material will be disposed in an approved manner. Slopes. Any indication of slope erosion will be addressed immediately. If necessary, additional slope stabilization materials will be placed on the slope, or an additional diversion implemented. The decision • regarding slope stabilization methods will be the responsibility of the on-site construction manager or the • resident engineer. • Revegetation. Where possible, disturbed areas previously vegetated prior to the proposed activity will be restored with an appropriate seed mix. The potential for erosion of soils on the site will be further • minimized by limiting the extent of clearing/removal of vegetation. • 2.4 SWPPP Updates and Availability • • The SW PPP will be updated as necessary to reflect new information prepared or obtained. Revisions to any BMPs used on the site in response to failures or inadequacies will also be recorded through an • update to the SW PPP. Any SW PPP updates or revisions needed to reflect BMP changes will be completed within seven days of the inspection that documented the need for additional or modified BMPs. • Changes will be documented. • • • • • • • • • • • • • • COMBINED HEAT AND POWER FACILITY 7 • STORMWATER MANAGEMENT PLAN • • • • • • • • • • • • • • • • • • Appendix A • Figures • • • • • • • • • • • • • • • • • • • • • !°_lam' �`?+, �� .®. � •- i WIN IVA d lVJa a • r ®S��' ®l�tl ,!PA' INS svvj ourAw P� PIMA- vOL �jn KIM 41 WAR! :7W®� a �� '�'�.1�e� � � \ t � Com ®, ��a •tt All :��`� '�� - � '�•_A�� SP1/ ��t � <<� r��.�d■!•` '1 • FAD � i -•�� +I�//p��i', .�s� '• '''Y r`. ,.�,/�- `-��r 1 1 - Combined - • Power Facility Project Salem, MA i • - 1 : Locus Map South -•- District y as � _ . " . �, . a8 .r epi$° ♦a _ - � t I %;4� 1 26 • .� 0- ' a A. *;fit. �M1�:iu r w' ,�,,•X *"-, F i y +6 .ae< Mr-, -kms p ., yF ^.. - ,�:v ,,.u�sr `-a.° :r•arrca-...,w m.,- ..r < 'r-"+a ,.,..i,c�� a.,x .�/'� 6 t • I .F�'a, • a,e3°x. `�f .W�{ , *J+'`*� .., r a Jd^ ;li'r ♦i''7 -1 24 22 y ' •Ky 6� r i xY id�. . r 20 f r a • �3T..w}. �s � • � rMr. M .F �"F��r * - fir F- �i,' r .,.. ` r h + i V p � 9 v 6 y 16 i a al Y 4 `® CP1 FIGURE 3. CHP FACILITY ,.' �, 3 FUTURE CONDITIONS Direction of Stormwater Flow y� - - � +W�i ntiltar £,�y� erv. E yR '. -,1 • z � y � . • a �.�` O Subcatchments ® � 50 Feet A m rt s 25 feet i - • 26 • N y . old 3 t r MIA WOW '22 • . fr4a......rr_ ,,, ,•k+,. v= ,,,may _.. � �,`' . 4 r, • z 2 t • _ ..,r- »,--rte -a« a-v ' 1 " rY y +R ♦ r I . ' ` \ my J { r r ' • � �* A ♦ l . F !Y } ', t r d :. �*! . ,x, ` .t-' ' T. .d " ;a. � � �':A4� ). �.` .....aw.-. �.rR-_-w ++..-...e.,..>_.,.-_.. --.r^+ws+,w...rnr�*. r FF r � ` w� 20 'a J i l • 4 t kx • L 7� , C i 01 ro • ^ ^ FIGURE 2. CHP FACILITY • w """ $' . - _` ® cP-1 EXISTING CONDITIONS n k` .x t, `. vj ♦ _ Direction of Stormwater Flow Subcatchments • �� 4k 1. x c r 0 25 50 .s _ >' .�' Feet • �, `.=t' :{ fP 1 inch = 25 feet • • • • • • • • • • • • • • • Appendix B • Site Plans • • • • • • • • • • • • • • • • • • • • • • • • • • 2 3 4 5 Qary O gx� ROUTED _.._TE _ • OPERATIONS�AND V _ 2-1" PVC COATED MAINTENANCE BUILDING RGS ELECTRICAL CONDUIT SECONDARY \ UTED WITH 4" GAS. AT __--- INFLU ENT � i v, G • '_ OXYGEN DING • D I \ REACTORS ❑I I BUIL I O d z. C SECONDARY CLARIFIERS 27 • - --- INSTALL 3'x3' CONCRETE ANCHOR 3 FT FROM ' r • ' " STRUCTURE PENETRATION, TYP. EACH END. - - - SIZE IN ACCORDANCE WITH PIPING SYSTEM MANUFACTURER'S RECOMMENDATIONS - - • -1 DIST. BOX F_ - - ❑ hl- __ c - -_ 2C FACTORY PAWED.AINTED SCH�AD BCKBLACK �y _ of E _. - -- _ - STEEL GAS SERVICE TO CHP UNIT. I '- D tom_•:. —3�_ 4 D D _B _D _B 6 HWS � _ . & H_wR_. 2-," PVC n E e Ga- COATED RGS • \\\\\ S - IAO • E%ISTING CHEMICAL S\� @12 T CL CAS AND TRANSFORMER A. +'+ IDD FOOT DUCTBANK TRANSFORMERNp NEURtAL • FEED PIPING \\ \ h - BUFFER ZONE METING o `�\\� GROUNDING RESISTOR. HVMH- CHLORINATION = ------------- BUILDING HEAT DUMP - • .11,A RADIATOR (2) 1 1/4 OR • / -_ — — "'�\ Il� _ / \ — — — — FAN— __ CHLORINE BLDG. CONTACT TANK r • - 79 3 ,� E%ISTING DUCTB4NK !> — .� _ _ BURIED • _ �. - - / EXHAUST TO HVMH-8 ) TSTA E%5➢NG 11111D SYSTEM \ ,. 3-a. - IN PERF. PVC DRAIN --� - _-- IN STONE TRENCH Z — b AREA • -u - _. .. ._ 5-'. b 0 OXIDATION CATALYST ATAL WALLACOUSTIC 1\. 3 2Sz Z 31 - \ �\ w m d i- - � w g W i COMBINED NEAT AND POWER O � (CHP) ENCLOSURE. FA N U - i WORK LIMITS TOP OF FLOOD ZONE AE - COASTAL BANK (ECFV 14 NAVD88) Z / (ECFV 19.3 SEED) U NOTES, 1. WHEN THE CONTRACTOR PROPOSES EQUIPMENT WHICH REQUIRES AN ARRANGEMENT DIFFERING FROM THAT INDICATED EL THE DRAWINGS OR SPECIFIED. PREPARE AND SUBMIT FOR REVIEW SCHEDULE STRUCTURAL. MECHANICAL AND EAT DC NU C 1034 f LE CAO owG ELECTRICAL DRAWINGS AND EQUIPMENT LISTS. UTILITIES CONSUMPTION SCHEDULE AND OPERATING INSTRUCTIONS, LE. C t03 • - r MAKE CHANGES, IF ACCEPTED, AT NO ADDITION ST TO THE DISTRICT. EOUIPMEM HE PROPOSES TO FURNISH. SHOWING NECESSARY CHANCES AND EMBODYING SPECIAL FEATURES OF THE FI AL CO DESIGNED BY M CURRAN DRAwN BY M.CUPoWI 2. THE VERTICAL DATUM DEPICTED HEREON IS BUPON SOUTH ESSEX SEWERAGE DATUM. STARTING BENCHMARK ELEVATCHISELED= 27.82', DESIGNATED AS BM-8, CHISELED % ON DOOR SILL AT SC2 BUILDING OEE1 cnEck: _ •e $ 3. ELEVATIONS ARE SESD DATUM WHICH IS MEAN LOW WATER (MLW) AND IS 4.46' BELOW USGS MEAN SEA LEVEL (MSL) ERN CHECK: q,SNYOER E a DATUM. DATE- SEPI.2014 _ SCALP. AS Non PIAN 0 20 A, 60 �= BALL. =20C 3 0 _ SCALE FEET g d SHEET OF .S n 1 2 3 4 5 • ) 2 3 4 5 I • Qao,v o U cmc • gM r Eo • FACILITY ENTRANCE/EXIT a _ AND GATWES Y M CC • V) un � J .rvE • FORT AVENUE 00 W,-:$ o d'W AAA a= • � FORT AVENUE w PEABODY/SALEM—, TIr .� ® 0 INFLUENT PUMP o z o o " • STATION — o % CIO • Q e \ Z 0 I O � u • _ � LL OPERATIONS AND ® 12 0 11 0 • SLUDGE I PRIMARY CLARIFIER w °s MAINTENANCE BUILDING mm @ GRIT PROCESS (BELOW GRADE) a- BUILDING BUILDING - i G❑ ® ® © z SECONDARY z a (OPERATIONS a E 0 CLARIFIERS I • C w;f„ BUILDING) a OXYGEN LL oI # C a o —p,,, REACTORS o z LG • ODOR° ® 'DIST' � r O • CONTROL ~.,,,.fs« r® e '.BOX a ¢ m° o oc Y. L`r ®� 0 100 MOT z 0 ® m ® .BUFFER ZONE 0O 'V TE � Q11 • CHL NATION ®' ❑� ❑� ❑� ® • s oo 11 1 Q ® BUILDING "'m M 8 om" 0 _ _ O m M 3 ODOR SCRUBBERS- ® / FAN CHLORINE BLDG CONTACT TANKS I • ,„, ❑ ❑ ❑ :�2 m, / 0 (BURIED) O • D �o m,� y ��I o a PP®nLl ( � TY �ei em ®� � om ®PJ'rik I•Y 11 1 „m° 'ernM2 - __ _ J -i M#1 .- ('�'` .K�y` SALEM NECK UMP STATION • O TOP OF B POWER PLANT\O COlSTAI BANK / < ¢ B • LL • / PROPOSED COMBINED OCA 0 AND POWER FACIIM LOCATION / oa.,o • \aD Z FLOOD ZONE AE ® f�/ (ECFV 14 NAVO6B. ELEV 19.3 SESD) • �/E (SEE NOTE 1) ELI moi/ m • \ CAT COVE ^ LE o w • \ ( 0 S A L E M H A R B 0 R ) \ S M I T H P 0 0 L o • A0 U O - u o A + ; PRWECI ND. 6044722I A CAD DWG FILE G-101 - DESIGNED 6Y: MCURIM NDIE. DRAWN BY M.CURRIN i$ 1. A PORTION OF THE SUBJECT PROPERTY IS LOCATED IN FLOOD ZONE X. AREAS ` DEPT CHEM € T - DETERMINED TO BE OUTSIDE THE 0.25 ANNUAL CHANCE FLOODPWN. A PORTION OF THE - N PAW CHECK: R.SNYDER s _ PROPERTY IS LOCATED WITHIN ROOD ZONE AE (FLOOD ELEVATION 14 NAVD86), AREAS - pgiE: SEPT 2014 SUBJECT TO INUNDATION BY THE 15 ANNUAL CHANCE ROODPLAN PER FEMA 8000 • s INSURANCE RATE MAPS NUMBER 25009004190 AND 25009004360 DATED JULY 16. 2014. - SCALC AS NOYD 0 60 120 180 60' G_2 SCALE FEET N SHEET EE 3 u' • 1 Z J d 5 I • • • • • • • • • • • • • • Appendix C • • Soils Map • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • . • • • • • Fydr•gi!S,4,PG,Esse!o! !!ssk ut!utrn Par• • • • • • • • • • • • • • • (CHP Facility-SESD) 345840 345900 345960 346020 346080 346140 346200 346260 346320 42'31'50' . y3 42°31'51" °'°++ AW Mpg ir It f F y �- � SII � �. 9 V� t 42°31'371. "' 42°31'39' 345640 345900 345960 346020 346080 346140 346200 346260 346320 Map Scene:1:2 820 if printed on A size(85"x 11")sheet. N Meters 035 70 140 210 Feet 0 150 300 600 900 USDA Natural Resources Web Soil Survey 8/21/2012 AiN Conservation Service National Cooperative Soil Survey Page 1 of 4 0000000000000000000000000000000000000000000 • Hydrologic Soil Group—Essex County,Massachusetts,Southern Part (CHP Facility-SESD) MAP LEGEND MAP INFORMATION Area of Interest(AOI) Map Scale: 1:2,820 if printed on A size(8.5'x 11")sheet. Area of Interest(AOI) The soil surveys that comprise your AOI were mapped at 1:15,840. Soils Soil Map Units Warning: Soil Map may not be valid at this scale. Soil Ratings Enlargement of maps beyond the scale of mapping can cause A misunderstanding of the detail of mapping and accuracy of soil line placement.Themaps do not show the small areas of contrasting A/D soils that could have been shown at a more detailed scale. Il 8 Please rely on the bar scale on each map sheet for accurate map F-1 B/D measurements. 0 C Source of Map: Natural Resources Conservation Service ® C/o Web Soil Survey URL: http://websoilsuwey.nres.usda.gov Coordinate System: UTM Zone 19N NAD83 O D This product is generated from the USDA-NRCS certified data as of Q' Not rated or not available the version date(s)listed below. Political Features Soil Survey Area: Essex County,Massachusetts,Southern Part Cities Survey Area Data: Version 9, Feb 26,2010 Water Features Date(s)aerial images were photographed: 7/31/2003 1 Streams and Canals The orthophoto or other base map on which the soil lines were Transportation compiled and digitized probably differs from the background - Rails imagery displayed on these maps.As a result,some minor shifting of map unit boundaries may be evident. A/ Interstate Highways N US Routes Major Roads Local Roads USDA Natural Resources Web Soil Survey 8/21/2012 a" Conservation Service National Cooperative Soil Survey Page 2 of 4 • Hydrologic Soil Group–Essex County,Massachusetts,Southern Part CHP Facility-SESD • • Hydrologic Soil Group • V 4., Hydrologic Soil Group—Summary by Map Unit—Essex County,Massachusetts,Southern Part(MA606) c • .;Map unit symbol Map unit name- Rating - Acres in AOI rf "'"'' Percent ofA01 • 102C Chatfield-Hollis-Rock outcrop B 2.1 14.1% • complex,3 to 15 percent slopes 102E Chatfield-Hollis-Rock outcrop B 1.2 8.3% • complex,15 to 35 percent slopes • 602 Urban land 7.6 52.1% • Subtotals for Soil Survey Area 10.9 74.5%1 • Totals for Area of Interest 14.7 100.0% Description • Hydrologic soil groups are based on estimates of runoff potential. Soils are • assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation • from long-duration storms. • The soils in the United States are assigned to four groups (A, B, C, and D) and • three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential)when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or • gravelly sands. These soils have a high rate of water transmission. • Group B. Soils having a moderate infiltration rate when thoroughly wet. These • consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils • have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or • soils of moderately fine texture or fine texture.These soils have a slow rate of water • transmission. • Group D. Soils having a very slow infiltration rate (high runoff potential)when • thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. • These soils have a very slow rate of water transmission. • If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is • for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. • • • USDA Natural Resources Web Soil Survey 812 112 01 2 • Conservation Service National Cooperative Soil Survey Page 3 of 4 • • • • • Hydrologic Soil Group—Essex County,Massachusetts,Southern Part CHP facility-SESD • • Rating Options . • • Aggregation Method: Dominant Condition • Component Percent Cutoff: None Specified • Tie-break Rule: Higher • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • USDA Natural Resources Web Soil Survey 8/21/2012 • Conservation Service National Cooperative Soil Survey Page 4 of 4 • • • • • • • • • • • • • • • • • • Attachment D HydroCAD Modeling Calculations • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Attachment D • HydroCAD Modeling Calculations • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • (D 2 trap rock slope Distribution Box [R-1] sh et flow over trap rock slope R-2 -- -- Sheet flow over grassed O O rea Small grassed a /Grd area-future Oadjacent to roadwae of C H P F Building and concrete pad ca FR-3] CB-1 She flow over paved CB ro way draining to CB #20 O ce 6 y cB#20 Perimeter roadway CP-1 Drainage Diagram for SESD CHP Facility Existing Conditons Subca Reacn on Link Prepared by AECOM 8/22/2012 HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC • • • • SESD CHP Facility Existing Conditons Prepared by AECOM Page 1 • HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 Area Listing (all nodes) • Area (acres) CN Description (subcats) 0.199 74 >75% Grass cover, Good, HSG C (4,5) 0.074 89 Gravel slope (1) 0.021 98 (3) • 0.030 98 Concrete slab (2) • 0.246 98 Paved parking & roofs (6) • 0.571 • • • • • • • • • • • • • • • • • • • I • • • • • • • • • SESD CHP Facility Existing Conditons Type 11124-hr 2-year Rainfall=3.15" Prepared by AECOM Page 2 • HydroCAD&8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 • Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points • Runoff by SCS TR-20 method, UH=SCS • Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method • Subcatchment 1: trap rock slope Runoff Area=3,229 sf Runoff Depth>1.91" • Flow Length=58' Slope=0.1217'/' Tc=0.7 min CN=89 Runoff=0.20 cfs 0.012 of • Subcatchment 2: Distribution Box Runoff Area=1,323 sf Runoff Depth>2.73" • Flow Length=33' Slope=0.0010'/' Tc=1.7 min CN=98 Runoff=0.10 cfs 0.007 of Subcatchment 3: Building and concrete pad Runoff Area=903 sf Runoff Depth>2.73" Flow Length=20' Slope=0.0010'P Tc=2.1 min CN=98 Runoff=0.07 cfs 0.005 of • • Subcatchment 4: Small grassed area adjacent to roadway Runoff Area=1,021 sf Runoff Depth>0.92" Flow Length=38' Slope=0.0260'/' Tc=1.7 min CN=74 Runoff=0.03 cfs 0.002 of • • Subcatchment 5: Grassed area -future site of CHPF Runoff Area=7,643 sf Runoff Depth>0.91" • Flow Length=175' Slope=0.0114'/' Tc=8.8 min CN=74 Runoff=0.17 cfs 0.013 of • Subcatchment 6: Perimeter roadway Runoff Area=10.732 sf Runoff Depth>2.73" Flow Length=150' Slope=0.0267'/' Tc=2.0 min CN=98 Runoff=0.82 cfs 0.056 of • Reach R-1: sheet flow over trap rock slope Avg. Depth=0.03' Max Vel=1.44 fps Inflow=0.30 cfs 0.019 of • n=0.025 L=50.0' S=0.1200'P Capacity=90.98 cfs Outflow=0.28 cfs 0.019 of • Reach R-2: Sheet flow over grassed area Avg. Depth=0.06' Max Vel=0.24 fps Inflow=0.28 cfs 0.019 of • n=0.150 L=25.0' S=0.0400'P Capacity=0.72 cfs Outflow=0.26 cfs 0.019 of • Reach R-3: Sheet flow over paved roadway draini Avg. Depth=0.02' Max Vel=0.87 fps Inflow=0.19 cfs 0.015 of • n=0.013 L=45.0' S=0.0222'P Capacity=8.40 cfs Outflow=0.19 cfs 0.015 of • Pond CB#20: CP-1 Peak Elev=14.58' Inflow=1.23 cfs 0.095 of • Outflow=1.23 cfs 0.095 of Pond CB-1: CB Peak Elev=15.28' Inflow=0.32 cfs 0.023 of • Outflow=0.32 cfs 0.023 of • Total Runoff Area=0.571 ac Runoff Volume=0.095 of Average Runoff Depth= 1.99" • 47.86% Pervious Area= 0.273 ac 52.140/6 Impervious Area=0.297 ac • • • • • • • • k • • • SESD CHP Facility Existing Conditons Type 111 24-hr 10-year Rainfall=4.80" Prepared by AECOM Page 3 • HydroCADO 8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 • Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points • Runoff by SCS TR-20 method, UH=SCS • Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method • Subcatchment 1: trap rock slope Runoff Area=3,229 sf Runoff Depth>3.38" • Flow Length=58' Slope=0.12177' Tc=0.7 min CN=89 Runoff=0.34 cfs 0.021 of • Subcatchment 2: Distribution Box Runoff Area=1,323 sf Runoff Depth>4.24" • Flow Length=33' Slope=0.0010'/' Tc=1.7 min CN=98 Runoff=0.15 cfs 0.011 of • • Subcatchment 3: Building and concrete pad Runoff Area=903 sf Runoff Depth>4.24" Flow Length=20' Slope=0.0010'/' Tc=2.1 min CN=98 Runoff=0.11 cfs 0.007 of • • Subcatchment 4: Small grassed area adjacent to roadway Runoff Area=1,021 sf Runoff Depth>2.04" Flow Length=38' Slope=0.0260'/' Tc=1.7 min CN=74 Runoff=0.07 cfs 0.004 of • . Subcatchment 5: Grassed area -future site of CHPF Runoff Area=7,643 sf Runoff Depth>2.04" • Flow Length=175'" Slope=0.0114'/' Tc=8.8 min CN=74 Runoff=0.40 cfs 0.030 of • Subcatchment 6: Perimeter roadway Runoff Area=10.732 sf Runoff Depth>4.24" • Flow Length=150' Slope=0.0267 'P Tc=2.0 min CN=98 Runoff=1.26 cfs 0.087 of • Reach R-1: sheet flow over trap rock slope Avg. Depth=0.04' Max Vel=1.69 fps Inflow=0.49 cfs 0.032 of • n=0.025 L=50.0' S=0.1200'P Capacity=90.98 cfs Outflow=0.47 cfs 0.032 of Reach R-2: Sheet flow over grassed area Avg. Depth=0.08' Max Vel=0.28 fps Inflow=0.47 cfs 0.032 of • n=0.150 L=25.0' S=0.0400'P Capacity=0.72 cfs Outflow=0.44 cfs 0.032 of • Reach R-3: Sheet flow over paved roadway draini Avg. Depth=0.03' Max Vel=1.13 fps Inflow=0.44 cfs 0.034 of • n=0.013 L=45.0' S=0.0222'P Capacity=8.40 cfs Outflow=0.43 cfs 0.034 of Pond CBtt20: CP-1 Peak Elev=14.80' Inflow=2.07 cfs 0.160 of Outflow=2.07 cfs 0.160 of • • Pond CB-1: CB Peak Elev=15.36' Inflow=0.53 cfs 0.039 of Outflow=0.53 cfs 0.039 of • • Total Runoff Area=0.571 ac Runoff Volume=0.160 of Average Runoff Depth=3.36" • 47.86% Pervious Area=0.273 ac 52.141/6 Impervious Area=0.297 ac • • • • • • • • • • SESD CHP Facility Existing Conditons Type 111 24-hr 2-year Rainfall=3.15" Prepared by AECOM Page 1 • HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 • Pond CB#20: CP-1 • • Inflow Area = 0.571 ac, Inflow Depth > 1.99" for 2-year event • Inflow 1.23 cis @ 12.05 hrs, Volume= 0.095 of Outflow - 1.23 cfs @ 12.05 hrs, Volume= 0.095 af, Atten= 0%, Lag= 0.0 min • Primary = 1.23 cfs @ 12.05 hrs, Volume= 0.095 of • Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs • Peak Elev= 14.58' @ 12.05 hrs • Device Routing Invert Outlet Devices • #1 Primary 14.00' 12.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.22 cfs @ 12.05 hrs HW=14.58' (Free Discharge) • t1=Orifice/Grate (Orifice Controls 1.22 cfs @ 2.59 fps) • Pond CB#20: CP-1 • Hydro graph • 1.23 cfs I _Inflow Pnmary • Inf1ow'Area=0.571 ac • Peak Elev=14.58'.... • LL • • 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 • Time (hours) • • • • • • • I • • • • • • • SESD CHP Facility Existing Conditons Type III 24-hr 10-year Rainfall=4.80" Prepared by AECOM Page 2 • HydroCADO 8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 • Pond CB#20: CPA • • Inflow Area = 0.571 ac, Inflow Depth > 3.36" for 10-year event • Inflow 2.07 cfs @ 12.05 hrs, Volume= 0.160 of Outflow - 2.07 cfs @ 12.05 hrs, Volume= 0.160 af, Atten= 0%, Lag= 0.0 min • Primary = 2.07 cfs @ 12.05 hrs, Volume= 0.160 of • Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs • Peak Elev= 14.80' @ 12.05 hrs • Device Routing Invert Outlet Devices • #1 Primary 14.00' 12.0"Vert. Orifice/Grate C= 0.600 • Primary OutFlow Max=2.05 cfs @ 12.05 hrs HW=14.80' (Free Discharge) • t1=Orifice/Grate (Orifice Controls 2.05 cfs @ 3.05 fps) • • Pond CB#20: CPA • Hydro graph • 07S j '', _Inflow Inflow Area= Primary • 0.571-ac • Peak ',Elev=14.80' • I I i • 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 • Time (hours) • • • • • • • • • • • trap rock slope v Distribution Box R-1 N" et flow over trap rock slope R-2 ce M Shee ow over grassed area 12 DMH wt�\ Infiltration trench � CB 1 CB \Bu,ld,ngoncrete Overt flow fr ".,,5a '• Cl", to filter strip Ointi ration trench — 4 :G�4ed area west of k cHPF 5b 5c mall grassed ar jacent to roadr Grassed area east of [R-3] CHPF CHPF S at flow over paved oadway draining to CB #20 6 co �fl cB#2 Perimeter roadway CP-1 Drainage Diagram for SESD CHP Facility Future Conditons Subca Reach and Link Prepared by AECOM 8/22/2012 FHydroCADO 8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC • • • SESD CHP Facility Future Conditons Prepared by AECOM Page 1 r� H_ydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 I � Area Listing (all nodes) Area (acres) CN Description (subcats) 0.137 74 >75% Grass cover, Good, HSG C (4,5a,5c) 0.074 89 Gravel slope (1) 0.021 98 (3) 0.030 98 Concrete slab (2) 0.062 98 Developed area (5b) 0.246 98 Paved parking & roofs (6) 0.571 I � • • SESD CHP Facility Future Conditons Type 111 24-hr 2-year Rainfall=3.15" Prepared by AECOM Page 2 HydroCAD®8.00 s/n 000537 0 2006 HydroCAD Software Solutions LLC 8/22/2012 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points • Runoff by SCS TR-20 method, UH=SCS • Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: trap rock slope Runoff Area=3,229 sf Runoff Depth>1.91" • Flow Length=58' Slope=0.12177' Tc=0.7 min CN=89 Runoff=0.20 cfs 0.012 of • Subcatchment 2: Distribution Box Runoff Area=1,323 sf Runoff Depth>2.73" • Flow Length=33' Slope=0.0010'/' Tc=1.7 min CN=98 Runoff=0.10 cfs 0.007 of • • Subcatchment 3: Building and concrete pad Runoff Area=903 sf Runoff Depth>2.73" Flow Length=20' Slope=0.00107' Tc=2.1 min CN=98 Runoff=0.07 cfs 0.005 of • • Subcatchment 4: Small grassed area adjacent to roadway Runoff Area=1,021 sf Runoff Depth>0.92" Flow Length=38' Slope=0.02607' Tc=1.7 min CN=74 Runoff=0.03 cfs 0.002 of • • Subcatchment 5a: Grassed area west of CHPF Runoff Area=4,213 sf Runoff Depth>0.92" • Flow Length=50' Slope=0.01147' Tc=3.2 min CN=74 Runoff=0.12 cfs 0.007 of • Subcatchment 5b: CHPF Runoff Area=2,693 sf Runoff Depth>2.73" • Flow Length=75' Slope=0.01147' Tc=1.8 min CN=98 Runoff=0.20 cfs 0.014 of • Subcatchment 5c: Grassed area east of CHPF Runoff Area=737 sf Runoff Depth>0.92" • Flow Length=25' Slope=0.0200'/' Tc=1.4 min CN=74 Runoff=0.02 cfs 0.001 of • Subcatchment 6: Perimeter roadway Runoff Area=10.732 sf Runoff Depth>2.73" Flow Length=150' Slope=0.0267 T Tc=2.0 min CN=98 Runoff=0.82 cfs 0.056 of • Reach R-1: sheet flow over trap rock slope Avg. Depth=0.03' Max Vel=1.44 fps Inflow=0.30 cfs 0.019 of • n=0.025 L=50.0' S=0.1200'P Capacity=90.98 cfs Outflow=0.28 cfs 0.019 of Reach R-2: Sheet flow over grassed area Avg. Depth=0.06' Max Vel=0.24 fps Inflow=0.28 cfs 0.019 of n=0.150 L=25.0' S=0.0400'13 Capacity=0.72 cfs Outflow=0.26 cfs 0.019 of • Reach R3: Sheet flow over paved roadway draini Avg. Depth=0.02' Max Vel=0.79 fps Inflow=0.14 cfs 0.009 of n=0.013 L=45.0' S=0.0222'13 Capacity=8.40 cfs Outflow=0.13 cfs 0.009 of • • Reach R-4: Overland flow from CHPF to filter stri Avg. Depth=0.07' Max Vel=0.12 fps Inflow=0.23 cfs 0.015 of n=0.240 L=25.0' S=0.0200'13 Capacity=0.38 cfs Outflow=0.20 cfs 0.015 of • • Pond 1213: Infiltration trench Peak Elev=14.44' Storage=0.013 of Inflow=0.20 cfs 0.015 of • Discarded=0.00 cfs 0.003 of Primary=0.00 cfs 0.000 of Outflow=0.00 cfs 0.003 of Pond CB#20: CP-1 Peak Elev=14.49' Inflow=1.23 cfs 0.089 of • Outflow=1.23 cfs 0.089 of • Pond CB-1: CB Peak Elev=15.35' Inflow=0.32 cfs 0.023 of • Outflow=0.32 cfs 0.023 of • • • • • • • • SESD CHP Facility Future Conditons Type ///24-hr 2-year Rainfall=3.15" Prepared by AECOM Page 3 • HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 Pond DMH: DMH Peak Elev=15.70' Inflow=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of • • Total Runoff Area=0.571 ac Runoff Volume=0.104 of Average Runoff Depth=2.19" 37.02% Pervious Area=0.211 ac 62.98% Impervious Area=0.359 ac • • • • • • II • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • SESD CHP Facility Future Conditons Type 111 24-hr 10-year Rainfall=4.80" Prepared by AECOM Page 4 • HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 • Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points • Runoff by SCS TR-20 method, UH=SCS • Reach routing by Stor-Intl+Trans method - Pond routing by Stor-Ind method • Subcatchment 1: trap rock slope Runoff Area=3,229 sf Runoff Depth>3.38" • Flow Length=58' Slope=0.1217'/' Tc=0.7 min CN=89 Runoff=0.34 cfs 0.021 of • Subcatchment 2: Distribution Box Runoff Area=1,323 sf Runoff Depth>4.24" • Flow Length=33' Slope=0.0010'/' Tc=1.7 min CN=98 Runoff=0.15 cfs 0.011 of • • Subcatchment 3: Building and concrete pad Runoff Area=903 sf Runoff Depth>4.24" Flow Length=20' Slope=0.00107' Tc=2.1 min CN=98 Runoff=0.11 cfs 0.007 of • • Subcatchment 4: Small grassed area adjacent to roadway Runoff Area=1,021 sf Runoff Depth>2.04" • Flow Length=38' Slope=0.0260'/' Tc=1.7 min CN=74 Runoff=0.07 cfs 0.004 of • Subcatchment 5a: Grassed area west of CHPF Runoff Area=4,213 sf Runoff Depth>2.04" • Flow Length=50' Slope=0.0114'P Tc=3.2 min CN=74 Runoff=0.27 cfs 0.016 of Subcatchment 5b: CHPF Runoff Area=2,693 sf Runoff Depth>4.24" • Flow Length=75' Slope=0.0114'P Tc=1.8 min CN=98 Runoff=0.31 cfs 0.022 of • Subcatchment 5c: Grassed area east of CHPF Runoff Area=737 sf Runoff Depth>2.04" • Flow Length=25' Slope=0.0200'/' Tc=1.4 min CN=74 Runoff=0.05 cfs 0.003 of • Subcatchment 6: Perimeter roadway Runoff Area=10.732 sf Runoff Depth>4.24" • Flow Length=150' Slope=0.02677' Tc=2.0 min CN=98 Runoff=1.26 cfs 0.087 of • Reach R-1: sheet flow over trap rock slope Avg. Depth=0.04' Max Vel=1.69 fps Inflow=0.49 cfs 0.032 of • n=0.025 L=50.0' S=0.1200'P Capacity=90.98 cfs Outflow=0.47 cfs 0.032 of Reach R-2: Sheet flow over grassed area Avg. Depth=0.08' Max Vel=0.28 fps Inflow=0.47 cfs 0.032 of n=0.150 L=25.0' S=0.0400'P Capacity=0.72 cfs Outflow=0.44 cfs 0.032 of • • Reach R-3: Sheet flow over paved roadway draini Avg. Depth=0.02' Max Vel=1.03 fps Inflow=0.33 cfs 0.020 of n=0.013 L=45.0' S=0.0222'P Capacity=8.40 cfs Outflow=0.31 cfs 0.020 of • • Reach R-4: Overland flow from CHPF to filter stri Avg. Depth=0.09' Max Vel=0.14 fps Inflow=0.36 cfs 0.025 of • n=0.240 L=25.0' S=0.02007 Capacity=0.38 cfs Outflow=0.33 cfs 0.0252f • Pond 12P: Infiltration trench Peak Elev=14.59' Storage=0.013 of Inflow=0.33 cfs 0.025 of • Discarded=0.00 cfs 0.003 of Primary=0.14 cfs 0.009 of Outflow=0.15 cfs 0.012 of • Pond CB#20: CP-1 Peak Elev=14.59' Inflow=2.06 cfs 0.155 of • Outflow=2.06 cfs 0.155 of • Pond CB-1: CB Peak Elev=15.39' Inflow=0.53 cfs 0.048 of • Outflow=0.53 cfs 0.048 of • • • • • • • • SESD CHP Facility Future Conditons Type 111 24-hr 10-year Rainfall=4.80" Prepared by AECOM Page 5 • HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 Pond DMH: DMH Peak Elev=17.50' Inflow=0.14 cfs 0.009 of Outflow=0.14 cfs 0.009 of • • Total Runoff Area=0.571 ac Runoff Volume=0.171 of Average Runoff Depth= 3.60" • 37.02% Pervious Area=0.211 ac 62.98% Impervious Area=0.359 ac • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • SESD CHP Facility Future Conditons Type 11124-hr 2-year Rainfall=3.15" Prepared by AECOM Page 1 • HydroCAD®8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 • Pond CB#20: CP-1 • • Inflow Area = 0.571 ac, Inflow Depth > 1.86" for 2-year event • Inflow = 1.23 cfs @ 12.04 hrs, Volume= 0.089 of Outflow = 1.23 cfs @ 12.04 hrs, Volume= 0.089 af, Atten= 0%, Lag= 0.0 min • Primary = 1.23 cfs @ 12.04 hrs, Volume= 0.089 of • Routing by Star-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs • Peak Elev= 14.49' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 14.25' 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 • Primary OutFlow Max=1.21 cfs @ 12.04 hrs HW=14.49' (Free Discharge) • t-1=Orifice/Grate (Weir Controls 1.21 cfs @ 1.60 fps) • • Pond CB#20: CP-1 • Hydrograph • f 1.23 cfs : ! F—Inflow Primary • :Inflow:Area=0.571 ac • Peak Elev=14:49' • LL ': ': 'I I I : • • 0 • 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) • • • • • • • • • • i • � L � SESD CHP Facility Future Conditons Type 11124-hr 10-year Rainfall=4.80" Prepared by AECOM Page 2 HydroCADO 8.00 s/n 000537 ©2006 HydroCAD Software Solutions LLC 8/22/2012 Pond CB#20: CP-1 Inflow Area = 0.571 ac, Inflow Depth > 3.27" for 10-year event • Inflow 2.06 cfs @ 12.04 hrs, Volume= 0.155 of Outflow - 2.06 cfs @ 12.04 hrs, Volume= 0.155 af, Atten= 0%, Lag= 0.0 min Primary = 2.06 cfs @ 12.04 hrs, Volume= 0.155 of Routing by Star-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 14.59' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 14.25' 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 • Primary OutFlow Max=2.03 cfs @ 12.04 hrs HW=14.59' (Free Discharge) L-1=Orifice/Grate (Weir Controls 2.03 cfs @ 1.90 fps) Pond CB#20: CP-1 • Hydrograph • ', 12.06 cfs 1 ! —Inflow —Primary InflowiArea 0 571 ac Peak Elev=14.59' .... .. • . 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) • • • • • • • • • • • • • • • • • • • • • • • • Appendix E • TSS Removal and Stormwater Recharge Calculations • • I • • • • • • • • • • • • • I• • • • • • • TSS Removal Rates Calculation-Proposed Conditions • Project: SESD-Combined Heat and Power Facility(CHP) • Date: August 21,2012 - • A B C D E • TSS Removal Starting TSS TSS Removed Remaining TSS Load • BMP Rate Load (B x C) (C-D) • CHP Site Grassed Filter Strip 10% 100% 10% 90 • Infiltration Trench 80% 90% 72% 18% • Subcatchment TSS Removal= 82% • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Appendix F • Illicit Discharge Compliance Statement • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Illicit Discharge Compliance Statement • • • Project: Combined Heat and Power Facility • Location: 50 Fort Avenue, Salem, MA • Compliance Statement: Based on review of available design information and discussions with project personnel, the project team is unaware of any illicit discharges to the existing storm • drainage system in the vicinity of project activities. Illicit discharges are defined by MassDEP • Stormwater Standard 10. • • • • • • • • • • • • • • • • • • • • • • • • • • • AcCOM AECOM 781 2465200 tel 701 Edgewater Drive 7812456293 fax Wakefield,MA 01880 wwwlaecom.com September 11, 2014 Salem Conservation Commission 7$ ® Attn: Mr.Tom Devine,Conservation Agent 120 Washington St., 3rd Floor 2014 Salem, MA 01970 DEPT SUBJECT: NOTICE OF INTENT �MMUryityVEVEIOPMEN.f. Combined Heat and Power Facility South Essex Sewerage District Dear Commission Members: On behalf of the South Essex Sewerage District(SESD),AECOM respectfully submits one original and 7 copies of this Notice of Intent(NOI)for the construction of a Combined Heat and Power(CHP)facility at the District's existing wastewater treatment plant(WWTP)located at 50 Fort Avenue in Salem, MA. The District's WWTP is located adjacent to Cat Cove in Salem Harbor. Although some of the proposed work will be located within the 100-foot buffer zone, all of the work will occur in previously developed areas. In addition, no wetland resource areas will be disturbed for the proposed project activities. The project has been designed to comply with the Massachusetts Wetlands Protection Act (M.G.L., c. 131, s. 40), R's implementing Regulations (310 CMR 10.00), and the City of Salem Wetlands Protection Ordinance, Salem Code Chapter 50. It should also be noted that the MassDEP Waterways Program has already reviewed the proposed project and determined that the proposed CHP facility represents an insignificant deviation from the existing Chapter 91 License (DEP 3455) issued to SESD that includes the site of the project. As a result, MassDEP has indicated that the proposed project falls within the minor modification standards pursuant to 310 CMR 9.22(3)(a) and does not require the submission of a M.G.L. Chapter 91 license application (refer to Attachment E). Details of the proposed project are included in the attached application and figures. We look forward to discussing this Notice of Intent with the Commission at the hearing. If you have any questions, please do not hesitate to contact me at(781)224-6258. Robert B.Adams, P.E. Associate Vice President Enclosures cc: MassDEP—Northeast Region Alan Taubert,SESD David Michelsen, SESD Eric Barber, SESD Tom Touchet,AECOM . _ . . __.. .. . .__ ®fir 3 4 X. �a � x q n s y r,r 100-ft Buffer a rn -� t" t e C a A:4 c , AW I _ _P 9 �/ r a m a South Essex Sewerage District a Combined Heat and Power . Facility Project Z we Salem, MA v s Properties within 14=C0/VI 100-foot Buffer 0