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8766_SITE PLAN - 15 AGAWAM AVENURE.pdf
't7~~ _ oi-k Plan ~ lS ~GWM A\J.QJ1\Jt • • Town of Agawam 36 Main Street Agawam, Massachusetts 01001-1801 Tel. 413-786-0400 Fax 413-786-9927 April 17, 2015 Citizens Agawam Solar LLC 88 Black Falcon Avenue, Suite 342 Boston, MA 02210 To Whom It May Concern: -,-~, At its duly called meeting held on April 16, 2015, the Agawam Planning Board voted to approve the Site Plan entitled "Citizen Agawam Solar Proj ect, Agawam, Massachusetts", prepared by Tighe & Bond and dated March 2015 with the condition that the Engineering Department comments dated April 16, 20 15 (attached) and all other professional staff comments be addressed. If you have any questions, please contact this office at (413) 786-0400, extension 8738. MRPIMS:prk cc: Tighe & Bond BId. Insp. Eng. Dept. Town Clerk File To: CC: From: Date: Planning File • Engineering Division April 16, 2015 • TOWN OF AGAWAM' Department of Public Works 1000 Suffield Street -Agawam, MA 01001 Tel (413) 821 0600 -Fax (413) 8210631 Christopher J. Golba • Superintendent MEMORANDUM Subject: Site Plan -Citizens Solar LLC - M Street(landfill) Per your request, we have reviewed the site plan entitled "Citizen Agawam Solar Project, Agawam, MA; Prepared for: Citizens Agawam Solar, LLC, 88 Black Falcon Avenue, Suite 342, BostoD, MA; Prepafed by: Tighe& J3~ Inc. Engineers and Scientists, 53 Southampton Road, Westfield, MA; Scale 1 :50; Date: March 31,2015," and we have the following comments: 1. Engineering has concerns of storm water overtopping the access road at the location of the culvert during the 1 00 year storm because according to drainage calculations the height of the water will reach 70.50' where as the road elevation has a height of around 70' •. 2. Engineering has reviewed the detail at the culvert and we are uncertain if there will be sufficient cover over the pipes. Invert of the pipe is 68.9' + 18" pipe + O.D. = ± 70.4'. We request a drawing better detailing the connection between the swale and the culvert. 3. A plunge pool andlor rip rap should be cdnsidered at the end of the stone swale so the water will have time to collect and make the tum into the culvert. 4. The developer should work with the owners of the gravel road to relocate or remove any encroachments before construction begins. 5. Engineering defers any comments regarding turning movements for emergency vehicles to the fire department. 6. After the installation of the proposed silt fence please contact this division for inspection. Engineering reserves the right to make additional comments based on revisions made from the comments above and as new information is submitted. If you have any questions please do not hesitate to contact this division. Sincerely, ~b;,E.I.T. Civil Engineer I 1&4IJl:trh- Michael Albro, P .E. Town Engineer To: CC: From: Date: Planning File • Engineering Division April 16, 2015 • TOWN OF AGAWAM' Department of Public Works 1000 Suffield Street 0 Agawam, MA 0l00l Tel (413) 821 0600 o Fax (413) 821 0631 Christopher J. Golba 0 $uperiDtendent MEMORANDUM Subject: Site Plan -Citizens Solar LLC - M Street(landfill) Per your request, we have reviewed the site plan entitled "Citizen Agawam Solar Project, Agawam, MA; Prepared for: Citizens Agawam Solar, LLC, 88 Black Falcon Avenue, Suite 342, Boston, MA; Prepai:ed by: Tighe & Bond, Inc. Engineers and Scientists, 53 Southampton Road, Westfield, MA; Scale 1:50; Date: March 31,2015," and we have the following comments: 1. Engineering has concerns of storm water overtopping the access road at the location of the culvert during the 1 00 year storm because according to drainage calculations the height of the water will reach 70.50' where as the road elevation has a height of around 70' .. 2, Engineering has reviewed the detail at the culvert and we are uncertain if there will be sufficient cover over the pipes. Invert of the pipe is 68.9' + 18" pipe + 0.0, = ± 70.4'. We request a drawing better detailing the connection between the swale and the culvert. 3. A plunge pool and/or rip rap should be considered at the end of the stone swale so the water will have time to collect and make the tum into the culvert. 4. The developer should woik with the owners of the gravel road to relocate or remove any encroachments before construction begins. 5. Engineering defers any comments regarding turning movements for emergency vehicles to the fire department. 6. After the installation of the proposed silt fence please contact this division for inspection. Engineering reserves the right to make additional comments based on revisions made from the comments above and as new information is submitted. If you have any questions please do not hesitate to contact this division. Sincerely, ~E.I.T. Civil Engineer I ~Jl:tl/!h,- Michael Albro, P.E. Town Engineer , • • AGAWAM OFFICE OF PLANNING & COMMUNITY DEVELOPMENT SITE PLAN REVIEW REVIEWER: M. Strange DATE: April 15, 2015 DATE RECEIVED: March 30, 2015 DISTRIBUTION DATE: March 31, 2015 PLANNING BOARD MEETING DATE: April 16, 2015 APPLICANT INFORMATION 1. Name of Business: Citizens Agawam Solar, LLC Address: 88 Black Falcon Avenue, Suite 342, Boston, MA 02210 Telephone: 617·951·0413 Fax: 2. Owner: Property Owner -Essential Power LLC Address: 3. Engineer: Brian S. Huntley Address: Tighe & Bond, 53 Southampton Road, Westfield, MA 01085 Telephone: 875·3301 Fax: 562·5317 PLAN REVIEW Scale: 1" = 50' Date: March 2015 Title Block (Street Address, Applicant's Name, Address, Scale, Name of Preparer of Plan): O.K. Description of Project: Proposed development of a 2.7 MW solar photovoltaic array on 10.4 acres if a 23.5 acre landfill on M Street. Description of Site: The site is currently the Essential Power Massachusetts, LLC landfill. Provision for Traffic Flow: Proposed access to the site is a gated entrance off of Agawam Avenue. Site Plan Review Page 2 • Parking: No additional parking is proposed. Drainage: See Engineering comments. Public Utilities: See Engineering comments. • Landscaping/Screening and Buffers: No additional landscaping is proposed. Sign Location: Is there to be a Citizen's sign? If so, please indicate. Exterior Lighting: No lighting is proposed. Rendering or Elevations: No buildings or structures are proposed. Fenced equipment pads are shown. Dumpster location: Not applicable. Other Comments or Concerns: • The information depicted on this map is for planning purposes only. It is not adequate for legal boundary definition, regulatory interpretation, or parcel-level analyses. \ ., '. '. \ 4/16/2015 12:06:38 PM ('\ ~ \ \ \ ~. \ (\ . <=-.... \ ~ .. L \ ~\ ® 1 :7680 1"=640' \ \ \ \ \ \ • • Town of Agawam Interoffice Memorandum To: CC: From: Date: Subject: Engineering Dept., Police Dept., Fire Dept, ADA Committee Planning Board 3/31/15 Site Plan -Citizens Solar LLC -M Street (landfill) Please review and comment on the attached Site Plan for Citizens Solar LLC prior to the Board's April 16th meeting. Thank you. PRK FROM THE DESK OF ... YOUR NAME TITLE TOVVN OF AGAWAM 36 MAIN ST AGAWAM, MA 01 001 Email address Here 413·786·0400 X Extension Fax: 413-786·9927 • TRANSMITTAL Project No.: C-0917-9-01-12 Date: March 19, 2015 Re: Site Plan Review Application • **YIA HAND DEUYERY** Citizens Agawam Solar Project, Agawam, MA To: Inspection Services Department Town of Agawam Public Works Municipal Annex 1000 Suffield Street Agawam, MA 01001 ~ :z: <=> V) ..,. -g l> % ,..., C> n l> ~ -l o FOR SIGNATURE o FOR FILE ~ -Ci l> ...0 :z: 3: o As REQUESTED [2l FOR REVIEW DPLEAJt'R.J4.v 3: ;0 » :8 C No. COPIES DESCRIPTION 10 Site Plan Review Application, Citizens Agawam Solar Project, Agawam, MA 10 sets Citizens Agawam Solar Project Permit Set, Project Drawings, prepared by Citizens Agawam Solar LLC and Tighe & Bond Mr. Wight: Attached please find ten (10) copies of a Site Plan Review application on behalf of Citizens Agawam Solar, LLC (Agawam Solar). Ten copies of the Project Drawings (full-size sets) are bound separately. The Site Plans have been developed in accordance with the Town of Agawam's Zoning Bylaw, specifically Section 180-13 (Site Plan). The application also contains a narrative discussion of how the proposed project complies with the Site Plan Review requirements and approval criteria. It is our understanding that the Town will undertake the necessary legal advertisement for a public hearing. We request that the Planning Board place this matter on the agenda for the next regularly scheduled meeting on April 2, 2015. If you have any questions, please contact me by email atBAngus@tighebond.com. or by phone at 413-875-1302. Very truly yours, Tighe 8r. Bond, Inc. Briony Angus, AICP Senior Project Manager/Associate T: 413-562-1600 x 3302 E: bangus@tighebond.com RECEIVED MAR 30 2015 AGI1\vvAM PLANNING BOARD 53 Southampton Road Westfield, MA 01085-5308 • Tel 413.562.1600 • Fax 413.562.5317 • TRANSMITTAL Project No.: C-0917-0l-12 Date: February 4, 2015 Re: Preliminary Figures EP Landfill Solar Project, Agawam. MA To: D FoRSIGI NO. COPIES 12 12 • VIA HAND DEUVERY 181 foR REvIEW D PLEASE REPLY Figure, EP Landfill Solar Project, I llx17 plan set copies of project ; Rgure, EP Landfill Solar Project, llx17 plan set copies of project Enclosed please find 12 copies of the preliminary Existing and Proposed Conditions Figures for the EP Landfill Solar Project in support of the Planning Board's Technical Review Meeting on February 10, 2015. If you have any questions, please do not hesitate to reach me. Very truly yours, Ti9h~"d' I"AlC. __ Briony Angus, AICP Senior Project Manager/Associate T: 413-875-1302 E: BAngus@tlghebond.com r: ..... c f;.. . . ." '1 FU 0 <\ [015 AGAWAM PLANNING BOARD 53 Southampton Road • Westfield, MA 01085-5308 • Tel 413.562.1600 • Fax 413.562.5317 • TRANSMITTAL Project No.: C-0917-0l-12 Date: February 4, 2015 Re: To: Preliminary Figures EP Landfill Solar Project, Agawam, MA Agawam Planning Board Agawam Town Hall Attn: Pamela Kerr 36 Main Street Agawam, MA 01001 • VIA HAND DELIVERY o FoR SIGNATURE 0 FOR FILE o As REQUESTED ~ FoR REvIEW 0 PLEAsE REPLY No. CoPIES DESCRIPTION 12 Figure 1: Preliminary Existing Conditions Figure, EP Landfill Solar Project, Agawam, MA (2 full size plan sets and 10 llx17 plan set copies of project drawings) 12 Figure 2: Preliminary Proposed Conditions Figure, EP Landfill Solar Project, Agawam, MA (2 full size plan sets and 10 11x17 plan set copies of project drawings) Enclosed please find 12 copies of the preliminary Existing and Proposed Conditions Figures for the EP Landfill Solar Project in support of the Planning Board's Technical Review Meeting on February 10, 2015. If you have any questions, please do not hesitate to reach me. Very truly yours, Tlgh~nd' InC..,'r--_ Briony Angus, AICP Senior Project Manager/Associate T: 413-875-1302 E: BAngus@tighebond.com . .~ !""\, ". C<~," .'..1 r. ... ,.'" . FU 0 <\L015 AGAWAM PLANNlNG BOARD 53 Southampton Road • Westfield, MA 01085-5308 • Tel413.562.1600 • Fax 413.562.5317 N o / o 0 0>;) o / o LEGEND • MANHOLE CLEAN OUT GAS VENT HYDRANT WETLAND RESOURCE UTILITY POLE AREA FLAG MONITORING WELL CAPPED PIPE INTERMEDIA INDEX CONTTE CONTOURS OURS PROPOSED CONTOURS _ _ _ _ _ PROPERTY LINE )( )( )( EXISTING EASEMENT -------218 -- 220- ----I22Dt--- )( )( )( )( EXISTING CHAIN EIlElElElEl.. )( PROPOSED LINK FENCE EElElEEE3ElElEl . CHAIN LI _ _ _ EROSION CON NK FENCE ______ TROL _______________ -LIMIT OF WOR ~,_~ APPROX UMITKOF REFUSE TREE LINE ENERG Y MASS , NOTES; 1. EXISTING ACCUM CONDITION SU FACILI ULAnON SURVEy RVEY BASED ON O'NEILr-A~~C~:r~ IN AG::.~GR~:~ICAL P~A~E~~5D "DATA D 12-29-08 PREPARED BY LANDFILL . FUSS & \ \ \ \ , \ \ '\ If) --\ "l> --< \\ '" A) 0 c:. -\ '" \ \ '\ U' \ \ \ \ \ \ \ \ \ "- \ "-" \ ~ \~ \ \ \ \ 'v ,,, /-." ~:~ ""t. .,...¢"' ... <".,-,:-Y~~ ~~ <> '\. \ \ \ \ , \ , , \" \ \ \ , \ , \ \ \ , \ \ , , i \ \ \ 0 \ 'i 4 Ul .p ~~ ~ ~ Ul ..... ~'i t:> ~ B e>'i. u-4~ 4 (to .J 0. \ \ T~~!~Bond ng Engineers www.tighebond.com >-0::: « z ~ .....J W 0::: c.. >---I Z o z o CI) CI) ~ () CI) o 0:: o LL P EP ~andfill Solar rOJect Agawam Massach~setts NOT FOR C ONSTRUCTION EXISTING SITE PLANCONDITIONS 75' I .0 I 37.5' 75' M M I I t.-iiiiiiiiliii~ r......;,;;,;..~1"=7=5' -:---==j SCALE' 1" . =75' FIGURE 1 ~ 1 iii 'i ~ { ! ~ f ! / . .. ~ 1 " , , CITIZEN AGAWAM SOLAR PROJECT SHEET NO. TITLE 1 , COVER SHEET 2 NOTES, LEGEND AND DETAILS 3 EXISTING CONDITIONS SITE PLAN 4 PROPOSED SITE LAYOUT 'PERMIT SET NOT FOR CONSTRUCTION , ' , , AGAWAM,MASSACHUSETTS SITE PLAN REIVEW APPLICATION SET NOT FOR CONSTRUCTION MARCH 2015 , , . SCALE: 1 :12000 '_. , -, "~' DEVELOPER '\\ . i CITIZENS AGAWAM SOLAR, , LLC SiTE PlAN ~' 88 BLACK FALCON AVENUE ~~~iA~.7~~ SUITE 342 . dt ~dJ'. BOSTON, MA 022io /~,. ' RECEI VED MAR 30 2015 AGAWAM . PlANNING BOARD www.tighebond.com COMPLETE SE'T 4 SHEETS I L . ______________________________________________ ~ __________________________________ ~~--------------------- >. m :;:. ~ " ~ ~ '" < .. o i o < !:! ~ i m ~ ~ i -'; ~ " g m .. LEGEND ~ MANHOLE CO CLEAN OUT o GAS VENT ~ HYDRANT ~ WETLAND RESOURCE AREA FLAG ~ UTlI..ITY POLE " MONITORING WELL • CAPPED PIPE ------------218 ------INTERMEDIATE CONTOURS ---",,220--INDEX CONTOURS -----,122tJ PROPOSED CONTOURS - - - - - - -PROPERTY LINE - -.-- -EXISTING EASEMENT --j)+,< ----')+'< --;)*(-~)( EXISTING CHAIN LINK FENCE ~)~( -~)~( --;)*(-*)( PROPOSED CHAIN LINK FENCE . .E3E3E3E3[;3E3[;3[;3E3E3E3E3E3[;3E3. EROSION CONTROL ---------- ----E-'"---- GENERAl NOTFS· LIMI I Uf ' WUI'CK APPROX LIMIT OF REFUSE TREE LINE PROPOSED ELECTRIC LINE SWALE 1. FIELD VERIFY EXISTING CONDITIONS PRIOR TO CONSTRUCTION •. IF FIELD CONDITIONS ARE OBSERVED THAT SIGNIFICANTILY VARY FROM THOSE SHOWN ON THESE PLANS, IMMEDIATELY NOTIFY THE ENGINEER FOR RESOLUTION OF THE CONFLICTING INFORMATION. 2. COMPLY WITH OSHA'S LATEST STANDARDS. PROVIDE All REQUIREMENTS OF OSHA'S EXCAVATION STANDARDS, INCLUDING BUT NOT LIMITED TO PROVISION FOR A COMPETENT PERSON ON SITE AND ALL DOCUMENTATlON REQUIRING CERTIFICATION BY A PROFESSIONAL ENGINEER. 3. MAINTAIN ALL UTILITIES IN THE AREAS UNDER CONSTRUCTION. LEAVE ALL PIPES. SWALES AND STRUCTURES WITHIN THE LIMIT OF THIS CONTRACT IN CLEAN AND OPERABLE CONDITION AT THE COMPLETION OF THE WORK. TAKE ALL NECESSARY PRECAUTIONS TO PREVENT SAND AND SILT FROM DISRIRBED AREAS FORM ENTERING THE SYSTEM. CONTRACTOR IS RESPONSIBLE FOR DAMAGE SUSTAINED TO ANY EXISTlNG UTlLITlES AND WIll MAKE REPAIRS THAT COMPLY WITH REQUIREMENTS OF OWNER OR RESPECTIVE UTlLlTY COMPANY. 4. LOAM AND SEED ALL DISRIRBED AREAS UNLESS OTHERWISE SPECIFIED. 5. CONSTRUCTION ACTIVITIES WIll OCCUR ON A CLOSED AND CAPPED LANDFILL. FOLLOW ALL APPIJCABLE PERMIT CONDITIONS, REGULATIONS AND STANDARDS OF PRACTICE ASSOCIATED WITH LANDFILL CONSTRUCTION. THIS INCLUDES, BUT IS NOT IJMITED TO LOW GROUND PRESSURE EQUIPMENT AND EROSION CONTROL MEASURES. 6. ALL UTILITY POLES WILL BE INSTALLED OUTSIDE THE LIMITS OF THE LANDFILL CAP BACKFIll MATERIAL FREE OF LARGE STONES, FROZEN & ORGANIC MATERIAL • SAND FINISHED GRADE ELECT. WARNING TAPE CONDUIT MEDIUM VOllGE AC TRENCH . DETAIL NO SCALE NOTES: 1. SECllON SHOWN IS FOR OFF LANDFILL APPLICA llONS ONLY. ANY ACCESS ROAD CROSSINGS SHOULD USE GRAVEL SECTION AT SURFACE. CONDUIT SHALL BE SCH. 40 PVC FOR THE OVERLAND RUN AND SCH . 80 PVC FOR THE ACCESS ROAD CROSSING. IS" PROCESSED GRAVEL /WASTE/ SANDBAG EVERY 10'± 12" MIN OVERLAP AREA TO BE PROTECTED . FLOW 11---FIL TREXX COMPOST SIL TSOXX OR APPROVED EQUAL WORK ZONE FIL TREXX COMPOST SIL.TSC)XX" . ...>.-. 12'-18' (TIP) TO BE PROTECTED WORK ZONE SECTION NOTES; I, All MATERIAL IS TO MEET FILTREXX SPECIFICATIONS. 2. COMPOST, SOIL, ROCK AND SEED FILL TO MEET APPUCA TlONS REQUIREMENTS. 3. SIL TSOXX DEPICTED IS FOR MINIMUM SLOPES. GREATER SLOPES MAY REQUIRED LARGER SOCKS. . 4. COMPOST MATERIAL TO BE DISPERSED ON SITE. WITHIN UMITS OF WORK, AS DIRECTED. EROSION CONTROL BARRIER NO SCALE DENSE GRADED CRUSHED STONE OR CLEAN, UNCOATED ABC (PER MASSDEP STANDARDS) GRADE ROADWAY SO STORMWA TER FlLOW IS NOT INTERRUPTED (PITCH TO SWALE) GROUP 3 WOVEN GEOTEXTILE FABRIC EROSION CONTROL BLANKET . BACKFILL WITH 3" MINUS CRUSHED ( PROPOSED ACCESS ROAD r~TONE TO B RING TO LEVEL GRADE FOR ACCESS ROA DBASE . GROUP 1 NON-WOVEN GEOTEXTIL FABRIC CORRUGATED HDPE CULVERT(S) (ADS OR EQUIVALENT) EXTEND PIPES A MINIMUM 3 FEET BEYOND ACCESS ROAD ON EACH SIDE OF CROSSING E_ ... r-... ~ DJ :> / tAI~ ~F '" Q dd ru ~ ~ y;;( EXISnNG LANDFILL CAP .... EXISnNG LANDF(LL MA TERIAL CULVERT CROSSING DETAIL NO SCALE 0 TYPE 1 TYPE 2 TYi>E 3 TYPE 4 . Wl 2' 9' 9' 4' W2 9' 10' 10' 16' . L 10' VARIES 16'MIN 70' davg 3" 3" ·6" 6" Davg . DENOTES AVERAGE STONE DIAMETER WHERE LENGTHS VARY STONE MUST MEET EXISTING GRADES. A t PLAN =========F===~"'" I I f"- ~ GROUP 3 WOVEN GEOTEXTILE FABRIC EROSION CONTROL NOTES; 1. INSTALL ALL EROSION CONTROL MEASURES SHOWN, SPECIFIED AND REQUIRED BY THE ENGINEER ACCESS ROAD DETAIL NO SCALE EXISnNG _G:: ~ __ = = = = -:-= =:1 = = = = = = ~~t~r.r---r'(ln~:z::r;r,r;~-'-~ - - - - - - - -EXISn-NG ~;oRi.L-CAP .!i....£:t.~-tJ.::L-A-J2:JL~ - - -PRIOR TO ANY CONSTRUCTION OR IMMEDIATELY UPON REQUEST. MAINTAIN ALL SUCH CONTROL MEASURES UNTIL FINAL SURFACE TREATMENTS ARE IN PLACE AND/OR UNTIL PERMANENT VEGETATION IS ESTABLISHED. Tighe&Bond Consulting Engineers www.tighebond.com Citizens Agawam Solar Project Agawam, 2. MARK WORK IJMIT LlNE(S) PRIOR TO STARTING WORK. DO NOT DISRIRB VEGETATION AND TOPSOIL BEYOND THE PROPOSED LIMIT LINE. COORDINATE WITH THE ENGINEER FOR THE LOCATIONS FOR THE TEMPORARY STOCKPILING OF TOPSOIL DURING CONSTRUCTION. 3. FINE GRADE AND IMMEDIATELY SEED ALL SIDE SLOPES, SHOULDER AREAS. AND DISRIRBED VEGETATED AREAS. All GRADING TO BE A MAXIMUM SLOPE OF 3;1. COMPACTED. AND STABIIJZED. EXISTING LANDRLL MA TER! *-THICKNESS SHALl BE l' OR 1.5 X'~I 'ltiIV'II1e. WHICHEVER IS GREATER SECTION A-A ROUP 1 NON-WOVEN GEOTEXllLE. Massachusetts OVERLAP SEAMS 12" MIN 4. REMOVE AND DISPOSE OF ALL SILT TRAPPED AT BARRIERS IN UPLAND AREAS OUTSIDE BUFFER ZONES. REMOVE MATERIALS DEPOSITED IN ANY TEMPORARY SETTlLING BASIN AT THE COMPLETION OF THE PROJECT. RESTORE ALL DISRIRBED AREAS TO PRE-CONSTRUCTION CONDITlONS. 5. ~EMOVE ALL sEDIMENTs fROM §lLT LADEN WATER PRIOR TO RELEA§[ DOWN§TRfAM OF THE DEWATlERED AREAS. . 6. DEWATlER AS NECESSARY TO KEEP CONSTRUCTION AREAS FREE OF WATER. DISCHARGE WATER FROM DEWATERING TO APPROPRIATE LOCATlON AND WITHOUT SEDIMENTATlON. 7. REMOVE ALL SEDIMENT TRACKED ON PUBLIC RIGHT-OF-WAYS AT THE END OF EACH DAY. PLAN REFERENCES; 1. THIS PLAN REFERENCES THE ESSENTIAL POWER MASSACHUSETTS. LLC (EP) LANDFILL CERTIFICATlON CLOSURE REPORT DA TlED MARCH 2, 2015. AN ADD CRUSHED STONE OR CLE UNCOATED ABC AS NEEDED TO FILL IN UNDULATIONS IN THE EXISTING TOPSOIL TO ASSIST IN THE LEVELING OF RACKS PRIOR TO THE PLACEMENT OF CONCRETE IN THE FORM ON THE EXISTING TOPSOIL. I. 1 -....., ~ .... -CONCRETE CAST IN PLACE-BAllAST BLOCK J STONE AT CULVERT ENDS NO SCALE EXISTING UNDULATING TOP SOIL (EXAGGERATED FOR CLARITY GAMECHANGE CONCRETE CAST- IN-PLACE BALLAST BLOCK ELEVATION N-S EXISTING UNDULATING TOP SOIL (EXAGGERATED FOR · CLARITY) GAMECHANGE POUR IN PLACE'" INSTALLATION NO SCALE NOT FOR CONSTRUCTION A 3115 Issued for Site Plan· Review Marl< Date Descrtption PROJECT NO; C917 FILE; J;ICIDWGIAGAWAM DRAWN· BY; DGM CHECKED; BSH APPROVED BY: FJH NOTES, LEGEND AND DETAILS SCALE: NO SCALE SHEET 2 i ~~------------------------~~======~==~================================~~~ ________________ ~ ____ -L ____ ----~ . ; . , • ;;. ;: N . Tighe&Bond Consulting Engineers www.tighebond.com Citizens Agawam Solar Project Agawam, Massachusetts NOT FOR CONSTRUCTION .---A 3115 Issued for Site Plan Review /' '-I ~~ar!<gD~at.~D"=cri~Ptio:..n :::::;;Z:====1 '-C917 ~ hPR~ru~~~TN~Q~'~~====~ f ---I-i;'ILE: J:ICIDWGIAGAWMIa -, DGM ( DRAWN BY: BSH CHECKED: FJH \ ~AP~PR~~~ED~~~: ____ ~ __ ~ \ EXISTING CONDITIONS \ SITE PLAN 50' 1 00' SCALE: 1 "=50' _L-It._IIil' SHEET 3 ~ ~ ~ ~ ~ ~ ~ ; .. 1 .. . ~ 1= N APPROX. PROPERTY o LINE ~ / / o o o 0 oV o o CHAIN LINK FENCE ----.... ----... CONSTRUcnON ENTRANCE R NEW 'I . Tig~~~Engo!!!: COnsuu.u ,'t/ ~\ ( \ \ www.tighebond.com PROPOSED SITE LAYOUT 100'I:SCAl.t:: 1"=50' SHEET 4 -~ I I I I I I I I I I I I I I I Citizens Agawam Solar Project Agawam, MA Site Plan Review Application Prepared For: Citizens Agawam Solar LLC March 2015 MAR 30 20\5 AGP>:vv AI'J PLANNING BOARD I I I I I I I I I I I I I I I I I I I C.0917.9.01.12 March 18, 2015 Inspection Services Department Town of Agawam Public Works Municipal Annex 1000 Suffield Street Agawam, MA 01001 Re: Site Plan Review Application Citizens Agawam Solar Project, Agawam, MA Dear Mr. Wight: Tighe & Bond is pleased to submit ten (10) copies of the enclosed Site Plan Review application on behalf of Citizens Agawam Solar, LLC (Agawam Solar). Ten copies of the Project Drawings are bound separately. The project consists of the installation of a 2.7 MW(DC)/2 MW(AC) solar photovoltaic array on the former Essential Power Massachusetts, LLC Landfill in Agawam, Massachusetts. The Site Plans have been developed in accordance with the Town of Agawam's Zoning Bylaw, specifically Section 180-13 (Site Plan). The application also contains a narrative discussion of how the proposed project complies with the Site Plan Review requirements and approval criteria. Required figures and plans are provided in the appendices to this narrative. The application package includes the following materials: • Application for Site Plan Approval • Site Plan Review Narrative o Appendix A: Figures o Appendix B: Project Drawings (Full-size set provided under separate cover) o Appendix C: One-Line Diagram o Appendix D: Proponent's Solar Array Operation & Maintenance Plan o Appendix E: Stormwater Calculations o Appendix F: Proponent's Emergency Response Plan It is our understanding that the Town will undertake the necessary legal advertisement for a public hearing. We request that the Planning Board place this matter on the agenda for the next regularly scheduled meeting on April 2, 2015. If you have any questions, please contact me by email atBAngus@tighebond.com. or by phone at 413-875-1302. Very truly yours, TIGHE 8t BOND, INC. ~~ Briony Angus, AICP Project Manager/Associate RECEIVED MAR 30 2015 AG/(vVA'M RD Enclosure PLANNING BOA Copy: Emma Kosciak, Citizens Agawam Solar LLC (via email w/enclosure) Kim MarSili, Station Director, Essential Power, LLC (via email w/enclosure) Steve Kamppila, Director, Commercial Services & BD, Essential Power, LLC (via email w/enclosure) 53 Southampton Road • Westfield, MA 01085-5308 • Tel 413.562.1600 • Fax 413.562.5317 I I I I I I I I I I I I I I I I I I I TOWN OF AGA W AM, MASSACHUSETTS FORMD Application for Site Plan Approval Please complete the following form and return it and ten (10) copies of the Site Plan to: Agawam Inspection Services 1 000 Suffield Street Agawam, MA 01001 ____ ~M~a~r~ch~18~ ____ ~2015 1. Name of Business Citizens Agawam Solar, LLC Address 88 Black Falcon Avenue, Suite 342, Boston, MA 02210 Phone # ________ Fax # _______ email 2. Name of ApplicantiOwner*Applicant: Emma Kosciak, Manager of Solar Development Address Citizens Agawam Solar, LLC, 88 Black Falcon Avenue, Suite 342, Boston, MA 02210 Phone # (617) 951-0413 Fax # _______ email ekosciak@citizensenergy.com *Owner: Essential Power, LLC 3. Name of Engineer/ Architect . ....!::B:!!ria"'n.c:S~.'-'-H.:!u::.:n!!:tle""y"-, ,--P",.E,,-. ____________ _ Address Tighe & Bond, 53 Southampton Road, Westfield, MA 01085 Phone # (413) 875-3301 Fax # (413) 562-5317 emffECEJVEO 4. Please give a brief description of the proposed project: MAR 30 2015 Please see attached Site Plan Review application narrativl»fANt~~~;~roject. I I I I I I I I I I I I I I I I I I I Table of Contents Form D Application for Site Plan Approval Section 1 Introduction Section 2 Project Description 2.1 Project Site Description ................................................................... 2-1 2.1.1 General Description .............................................................. 2-1 2.1.2 Zoning ................................................................................ 2-1 2.1.3 Setbacks ............................................................................. 2-1 2.1.4 Wetlands and Rare Species .................................................... 2-2 2.2 Project Description ......................................................................... 2-2 2.2.1 System Equipment ............................................................... 2-4 2.2.2 Electrical Equipment and Interconnection ................................ 2-4 2.2.3 Project Schedule .................................................................. 2-5 2.2.4 Construction Impacts ............................................................ 2-5 2.3 Facility Operations .......................................................................... 2-6 2.3.1 Operations & Maintenance ..................................................... 2-6 2.3.2 Site Security ........................................................................ 2-6 2.3.3 Inverter Noise Impacts ......................................................... 2-7 2.4 Decommissioning ........................................................................... 2-7 Section 3 Stormwater Management 3.1 Stormwater Runoff and Erosion Control Plan ...................................... 3-1 3.1.1 Ballast Installation on Crushed Stone / ABC Pads ..................... 3-2 3.1.2 Erosion Control .................................................................... 3-2 Section 4 Compliance with Site Plan Requirements 4.1 Topography .................................................................................. .4-1 4.2 Vehicular Traffic Flow & Parking Areas ............................................. .4-1 4.3 Drainage ...................................................................................... .4-1 4.4 Public Utilities ............................................................................... .4-1 4.5 Landscaping ................................................................................. .4-2 4.6 Sign Location ................................................................................ .4-2 4.7 Exterior Lig hti ng ........................................................................... .4-2 4 .8 Rendering or Elevations ................................................................. .4-2 4 .9 Proposed Screening ...................................................................... .4-2 4.10 Wetland Resources ....................................................................... .4-2 Section 5 Regulatory Compliance 5.1 Massachusetts Wetlands Protection Act ............................................. 5-1 5.2 Massachusetts Endangered Species Act (MESA) ................................. 5-1 5.3 Massachusetts Environmental Policy Act (MEPA) ................................. S-1 I I I I I I I I I I I I I I I I I I I Table of Contents 5.4 U.s. Army Corps of Engineers (ACOE) ............................................... 5-1 5.5 Other Permits ................................................................................ 5-1 5.5.1 NPDES Construction General Permit ........................................ 5-1 5.5.2 Town of Agawam Permits ...................................................... 5-2 5.6 Electric Interconnection ................................................................... 5-2 Appendices • Appendix A: • Appendix B: • Appendix C: • Appendix D: • Appendix E: • Appendix F: Figures Project Drawings (Full-size set provided under separate cover) One-line Diagram Proponent's Solar Array Operation & Maintenance Plan Stormwater Calculations Proponent's Emergency Response Plan J: \C\C0917\Permitting\Agawam\S PR \Agawam_S PR_a pplication. docx ii I I I I I I I I I I I I I I ,I I I I I Section 1 Introduction On behalf of Citizens Agawam Solar LLC (Agawam Solar or "the Proponent"), Tighe & Bond is submitting a Site Plan Review application to the Town of Agawam Inspections Department for the Citizens Agawam Solar Project (referred to as "the project"). The proposed project includes construction of a solar photovoltaic (PV) array with a Direct Current (~C) nameplate generating capacity of approximately 2.7 megawatts (MW) and alternating current (Ae) nameplate generating capacity of approximately 2 MW on the Essential Power Massachusetts, LLC Landfill (herein referred to as "the Landfill"). The private landfill is located on M Street in the Town of Agawam and owned by Essential Power Massachusetts, LLC. Note, MassDEP documentation identifies the facility's address as 15 Agawam Avenue in the City of West Springfield, MA. As proposed, the ground-mounted array will occupy approximately 10.44 acres of the approximately 23.5 acre landfill footprint. Agawam Solar has entered into a long-term ground lease with Essential Power Massachusetts, LLC. Components of the system to be installed at the landfill include solar panels, mounting substrates, system foundations, wiring and connections, power inverters, service and metering equipment, and interconnection with the utility. The facility will be designed by Agawam Solar, in conjunction with Tighe & Bond as lead civil engineer and environmental consultant. A USGS Site Locus figure, Priority Resource figure, and orthophotograph of the project site are provided in Appendix A as Figures 1-3 (respectively). Citizens Agawam Solar Project -Site Plan Review Application 1-1 I I I I I I I I I I I I I I I I I I I Section 2 Project Description 2.1 Project Site Description This Section provides an overall description and brief resource area characterization of the project site. 2.1.1 General Description The project site is located at 0 M Street in the Town of Agawam, MA and consists of one parcel (Parcel ID M15 1 1) that is approximately 25.8 acres according to the Town of Agawam Assessor's Database. Specifically, the landfill is located at 42° 05' 34.15" N and 72° 35' 51.89" W. The site is bounded by Riverdale Streett Route 5 to the east, Agawam Avenue to the west, the Essential Power Massachusetts, LLC power plant to the north, and the City of Springfield Bondi Island Landfill to the south. The municipal boundary between the City of West Springfield and the Town of Agawam bounds the western boundary of the project site. The landfill is primarily located within the corporate limits of the Town of Agawam; however, a portion of the northerly and westerly edges of the landfill are located in the City of West Springfield. A U.S. Army Corps of Engineers levee parallels the site's western and northern boundaries. The footprint of the former landfill is approximately 23.5 acres. The limits and topography of the landfill site are depicted on Sheet 3 in Appendix C. Access to the landfill site is provided via a gated entrance on Agawam Avenue. The existing gravel access road extends from Agawam Avenue along the northern boundary of the project site and crosses the West Springfield property. Based on discussions with Essential Power Massachusetts, LLC, access across the West Springfield property is allowed through an existing easement between Essential Power Massachusetts, LLC and the City of West Springfield and access can be granted for construction and maintenance of the solar project. The landfill is separated into two areas, east and west of the Eversource Energy (Formerly Western Massachusetts Electric Company) high tension utility distribution easement that runs north-south through the site. 2.1.2 Zoning Based on a review of the Town's Zoning Map, the project site is located in the Industrial A (IA) Zoning District. The project does not appear to be located in any overlay districts. Based on a review of the Town's Zoning Bylaw, solar photovoltaic (PV) is not contemplated as a use. On February 10, 2015, Tighe & Bond met with the Town to confirm the permitting approach. Based on feedback from the Town, the project will require Site Plan Review approval by the Town Planning Board. 2.1.3 Setbacks The dimensional requirements in the IA district require a minimum of a 40' front setback and 25' side and rear setbacks. Section 180-58 of the Zoning Bylaw also requires minimum frontage of 100' on a street. The parcel is adjacent to Route 5/ Riverdale Street, however vehicular access to the site is currently provided via a gated entrance on Agawam Ave and an entrance from M Citizens Agawam Solar Project -Site Plan Review Application 2-1 I I I I I I I I I I I I I I I I I I I Section 2 Project Description Street which starts at an interchange off of Route 5 and which appears to terminate at the entrance to the Bondi Island Landfill. Currently orthophotographs for this area depict a dirt road extending from M Street (at the Route 5 underpass) traversing west across the landfill site and terminating just short of Agawam Avenue. The existing access road parallels the parcel boundary and is located on the Bondi Island parcel, currently owned by the City of Springfield. A redevelopment study performed in 2004 for the area states that "M Street is currently not paved and is not a recognized street in the Town of Agawam, but is used frequently by automobiles and heavy vehicles accessing the landfill. Access to M Street is available, but fenced off with a guarded entrance currently in use at the Route 5 interchange." The access road that stretches from the property boundary across the Bondi Island Landfill is located on the Bondi Island Landfill parcel and is owned by the City of Springfield. Based on this, it is unclear where the frontage of the site is located. On February 19, 2015, Tighe & Bond contacted the Building Inspector to discuss the setback. To be conservative, the preliminary layout for the project assumed a 40' setback on all sides of the site. We have assumed that a dimensional variance is not necessary. 2.1.4 Wetlands and Rare Species A comprehensive analysis of environmental factors including wetlands, rare and endangered species, vernal pools, regulated floodplain, drinking water resources, areas of protected open space, and Areas of Critical Environmental Concern was conducted based on available GIS data. Based on this analysis, there are no areas deSignated as Priority Habitats of Rare Species or Estimated Habitats of Rare Wildlife within the landfill. Please refer to the Priority Resource figure (Figure 2) in Appendix A for reference. 2.2 Project Description Agawam Solar has entered into a long-term ground lease with Essential Power Massachusetts, LLC to develop an approximately 2.7 MW(DC)/2 MW(AC) solar array on the former landfill, pending receipt of necessary regulatory approvals. The limit of work of the proposed project will occupy approximately 10.44 acres of the landfill in the areas of relatively lower slope (less than approximately 10%). Portions of the landfill west of the transmission easement and within the boundary of the Town of Agawam are included in this project. The limit of work is shown on Sheet 4 of Appendix C. The solar system components are listed in Table 1-1, below. Citizens Agawam Solar Project -Site Plan Review Application 2-2 I I I I I I I I I I I I I I I I I I I Section 2 Project Description TABLE 1-1 Photovoltaic Solar Array Details Citizens Agawam Solar Project, Agawam, MA Equipment/Component Description System Size (DC): 2,698 kW Photovoltaic Modules: (8,568) 315w Solar Modules, or equivalent Inverters: (2) SMA-630CP-US inverters and (1) SMA-550CP-US inverter, or equivalent Transformers: Mounting System: Tilt Angle: Azimuth: Data System: (1) 1,500 kVA transformer, (1) 500 kVA, and (3) 5 kVA transformers, or equivalent Game Change Pour-In-Place™ Ground Mounting Racks, or equivalent 25° 180° (South = 180°) Not specified at this time. The Agawam Solar Project design prioritizes minimizing potential impacts to the landfill capping system while considering cost implications, system operation, array constructability, and ongoing operation and maintenance factors. Based on the layout and design (Appendix C), the project will not require any significant, clearing, grading, or compaction activities on the landfill during installation or operation of the system. Crushed stone or crushed, uncoated, Asphalt Brick and Concrete (ABC) will be used if the contractor determines that it is required to level the foundations of the racks. The foundation system has been designed to minimize erosion and impacts to stormwater control. Following expiration of the lease agreement with the Essential Power Massachusetts, LLC, Agawam Solar will decommission and remove the system from the landfill. System components include: solar panels, mounting substrates, system foundations, wiring and connections, power inverters, service and metering equipment, and the utility interconnection. Disturbed surfaces will be restored with loam and seed. Additionally, a proposed 12-ft. wide gravel access road will run north to south from the existing access road to provide access to the solar array for construction and maintenance activities. The landfill will be left in similar condition to pre-installation and in compliance with applicable regulations and permits. The plans for the Citizens Agawam Solar Project are included in Appendix C. The drawing set includes the following drawings: • Cover Sheet (Sheet 1 of 4) • Notes, Legend and Details (Sheet 2 of 4) • Existing Conditions Site Plan (Sheet 3 of 4) • Proposed Conditions Site Plan (Sheet 4 of 4) Citizens Agawam Solar Project -Site Plan Review Application 2-3 I I I I I I I I I I I I I I I I I I I Section 2 Project Description 2.2.1 System Equipment 2.2.1.1 Photovoltaic System Equipment Sheet 4 in Appendix C depicts the layout of the solar arrays. The system will consist of approximately 8,568 315w PV modules (or "panels") in a portrait orientation. The panels will be arranged in groups of four measuring approximately 13 feet long by 5.75 feet wide. 2.2.1.2 Rack System and Foundation The rows of Game Change racks will run east-west. The panels will be mounted at a fixed 25° angle facing south. The edge of the solar PV panels will be 3' off the ground to the south and 6.5' off the ground to the north. The rows of racks will be spaced approximately 7 feet apart, to reduce shadow impacts and allow for cap and solar system maintenance. There is one access path running north to south from the perimeter to access the landfill to allow for future maintenance of the system. The rack foundation will consist of cast in place ballast blocks, each with two posts to support the racking system. The ballast blocks will be oriented north-south, perpendicular to the axis of the rack rows. The 6 foot by 1.53 foot ballast blocks will be cast in place. Crushed stone or crushed, uncoated ABC may be used as needed to assist in the leveling of the posts within the ballast prior to placement of the concrete. The existing grass will remain in place and the ballast and/or crushed stone will be placed on the grass surface. The amount of crushed material shown on the drawings and details on Sheet 2 varies based on the amount of ground surface undulation and slope occurring where the ballast blocks are to be installed. Details depicting the proposed interface between the solar system and the landfill cap are included on the Site Layout drawings located in Appendix C. No penetration of the cap will be permitted at this site, and all equipment will be ballasted. 2.2.1.3 Cable Conduit and Utilities Each row will have an integrated combiner and disconnect switch into which the panel wiring feeds. From the combiner box, energy will be transmitted to one of two SMA- 630CP-US or SMA 500CP-US inverters located on an equipment pad located on the northeast side of the landfill. Cable trays will be used to support the conduit above the landfill surface from the arrays to the equipment pads. 2.2.2 Electrical Equipment and Interconnection Two reinforced concrete electrical equipment pads will be located on the landfill cap as shown on Sheet 4 in Appendix C. The equipment pads will be surrounded by a chain link fence with posts cast into the pad. In addition to the inverters noted above, the electrical equipment pad will also contain switchgear and a transformer that will step-up the power prior to interconnecting with Eversource's local distribution circuit. The electrical components proposed for the project are shown on the one-line diagram in Appendix D (Sheet E1.0). An Interconnection Application was submitted to WMECO and the Impact Study has been completed. Above ground conduits will convey power from the equipment pads to the interconnect location. An emergency system cut-off switch will be installed in a location deSignated by Town emergency personnel. Citizens Agawam Solar Project -Site Plan Review Application 2-4 I I I I I I I I I I I I I I I I I I I Section 2 Project Description 2.2.3 Project Schedule The proposed layout of the 2.7 MW(oC) solar array is presented on the drawings in Appendix C. Required permit applications for the project include building and electrical permits, a Post-Closure Use Permit from MassDEP, and this Site Plan Review approval from the Town of Agawam. The schedule for the project is presented in Table 2-1, below. As indicated below, construction is anticipated to commence in the late summer to avoid construction in the spring which brings a higher risk of rutting due to increased rainfall and spring thaw. TABLE 2-1 Project Schedule Project Phase System Design Permitting Interconnection Study Procu rement Construction 2.2.4 Construction Impacts Timeframe January 2015 -February 2015 March 2015 -May 2015 January 2015 -April 2015 May 2015 -June 2015 June 2015 -October 2015 Several temporary and permanent impacts are expected during or as a result of construction of the array on the landfill. The site will be accessed via a new crushed stone access road that will connect to the existing gravel access road that parallels the northern boundary of the project site as shown on Sheet 4 in Appendix C. It should be noted that the site is not accessible from the east due to the presence of Route 5 and from the south due to the Bondi Island Landfill. Only low ground pressure (LGP) equipment with less than 7 pounds per square inch ground pressure will be allowed on the landfill cap. Construction staging and stockpiling of materials will be limited to areas not on the landfill cap. Details and design of the access road improvements are provided on Sheet 2 in Appendix C. Construction will commence with installation of a new crushed stone access road that will extend the existing gravel access road from Agawam Avenue and provide access to the landfill. Installation of the solar PV array on the landfill will start on the northern and southern portions of the landfill cap and will work towards the equipment pad and access road located on the eastern portion of the site. Installation of the PV system will be initiated with the installation of leveling pads of crushed stone or crushed uncoated ABC if needed and the cast in place ballast blocks. The ballast block forms will be placed on the landfill surface and the racking system will be constructed and placed in the form. Following this initial set-up, concrete will be placed into the ballast block forms by pumping from a concrete truck that is located off of the landfill cap or on the access road. Every ballast has been designed so that it is within 500 feet of an access road that is capable of holding a concrete truck. As a last resort, concrete will be placed into the ballast block forms from LGP equipment. However, every effort will be taken to reduce this practice, in order to minimize the amount of vehicular traffic on the cap. Following ballast placement, the rack systems, panels, and supplies will be transported to installation locations with LGP equipment. The racks themselves will be mounted either by hand or with a rubber tracked mini excavator. Additionally, the panels are only Citizens Agawam Solar Project -Site Plan Review Application 2-5 I I I I I I I I I I I I I I I I I I I Section 2 Project Description single panel high in portrait orientation which enables manual installation. This will reduce the need for vehicular assistance during installation and serve to reduce vehicular traffic on the landfill. Following rack and panel installation, impacted vegetated surfaces will be repaired and seeded as soon as reasonably possible to minimize the potential for erosion. Existing fencing is located along the western and northern boundaries of the project site. A chain link fence is proposed to be installed around the two equipment pads to provide security. The fence will be affixed directly to the concrete equipment pads. See the plan set in Appendix C for the location of fencing. No clearing of existing vegetation is proposed as part of this project. The Proponent will maintain the vegetation within the limits of the solar array to avoid shading impacts to the solar system throughout the life of the project. Minimal contour changes are anticipated only in the area of the proposed access road. The potential impact of this feature is summarized in Section 3 Stormwater Management. 2.3 Facility Operations 2.3.1 Operations" Maintenance The Operation and Maintenance (O&M) plan for the solar array will be appended to the existing Operation and Maintenance Plan for the landfill site (see Appendix D for Agawam Solar's O&M Plan). It is not Intended that the protocol listed here will replace the current O&M activities for the landfill, but will rather update the procedures to meet the needs of the solar array. When construction has been completed, construction impacts, such as sedimentation in drainage features, which require repair will be identified and repaired. Following construction and re-establishment of vegetation impacted during construction, the operation and maintenance of the landfill should not be significantly altered from the current reqUirements. As required by the landfill's current post-closure maintenance and monitoring plan, the site will continue to be inspected periodically for erosion. Any erosion to the landfill surface will be stabilized and repaired immediately upon discovery. Essential Power Massachusetts, LLC will maintain responsibility for vegetation management at the site outSide of the solar array and Agawam Solar will maintain responsibility for vegetation management within the solar array area. Vegetation will be mowed at least twice a year si milar to the current operation for the site. 2.3.2 Site Security There are portions of existing fencing at the project site and signage will be installed indicating high voltages within the limits of the PV array will be provided on the outside of the perimeter fencing . Additionally, the project addresses the site security requirements of the National Electric Code (NEC) through the use of wiring encased in conduit, locked combiner boxes, and the installation of a fence and locks around the equipment pads. It should be noted that the site is not accessible from the east due to the presence of Route 5 and from the south due to the Bondi Island Landfill. Citizens Agawam Solar Project -Site Plan Review Application 2-6 I I I I I I I I I I I I I I I I I I I Section 2 Project Description 2.3.3 Inverter Noise Impacts The Proposed inverters will not create a nuisance sound condition for abutting properties and will comply with MassDEP's Noise Policy #90-001. 2.4 Decommissioning Essential Power Massachusetts, LLC has entered into a long-term ground lease agreement with Agawam Solar. The lease agreement will require that Agawam Solar decommission and remove the system from the landfill upon expiration of the lease agreement. System components include: solar panels, mounting substrates, system foundations, wiring and connections, power inverters, service and metering equipment, and the utility interconnection. Disturbed surfaces will be restored with loam and seed. The landfill will be left in similar condition to pre-installation as well as be in compliance with applicable regulations and permits. Citizens Agawam Solar Project -Site Plan Review Application 2-7 I I I I I I I I I I I I I I I I I I I Section 3 Stormwater Management The project limits include both areas within and outside of the boundary of the landfill cap. The site is accessed from an existing gravel access road that extends from Agawam Avenue and runs parallel to the northern boundary of the project site. The landfill surface is grass in good condition without any evidence of erosion from heavy rainfall events. Based on the Construction Certification Report prepared by Woodard & Curran dated August 28, 2014, the landfill cap consists of, from top to bottom: • 6" minimum thickness vegetative support layer (minimum 2% slope) • 12" minimum thickness Short Paper Fiber with in-place permeability of equal to or less than lxl0's cm/sec • Coal ash waste The low permeability layer prevents storm water from infiltrating into the waste mass below. Therefore, for purposes of this discussion, the landfill surface is considered an existing impermeable surface as stormwater runoff sheet flows off the landfill surface or above the low permeability layer until it encounters the edge of the landfill cap and recharges to ground water. The landfill site is currently divided into four drainage areas. The site generally slopes from the high point located centrally within the landfill radially to the toe of the slopes around the perimeter. A ridgeline generally runs north to south and west to east, directing stormwater runoff east to west and south to north from the high point and directs stormwater runoff to each of the four corners of the landfill. Under existing conditions, stormwater saturates the landfill cap system and excess runoff sheet flows across the landfill surface to vegetated swales around the perimeter of the landfill. There are no other stormwater management features utilized on site. 3.1 Stormwater Runoff and Erosion Control Plan The proposed project includes the construction of a 12-ft. gravel access road from the existing gravel access to the Agawam Solar Facility in order to provide access for construction vehicles and other occasional vehicular traffic for post-construction regular maintenance procedures. The proposed access road will be constructed of crushed stone. The road will extend southwesterly from the access location in the northeast corner of the site to two proposed cement concrete equipment pads and turn around area. Outside of the limits of the landfill, the access road will be constructed to be flush with existing grade where it has been designed to not impact stormwater flow patterns. Over the landfill surface, the access road will be built up above the existing cap in order to maintain the integrity of the cap, and will therefore create a topographical berm along its western side. Storm water will be allowed to flow along the roadside, contained within a stone-lined swale, to a proposed culvert discharging stormwater runoff across the proposed access road and off-site, .as under existing conditions. Using HydroCAD® Version 9.10, a hydrology and hydraulics software package based on TR-20 and TR-55 methodologies, the peak and average velocities of the stormwater along the western edge of the proposed access road within the stone-lined swale has been evaluated. This data was utilized to determine whether peak velocities (for the lOO-year 24 hour storm Citizens Agawam Solar Project -Site Plan Review Application 3-1 I I I I I I I I I I I I I I I I I I I Section 3 Stormwater Management event) are potentially erosive on the given slopes, and if additional erosion control measures are warranted. The maximum velocity within the stone-lined swale is anticipated to be 4.6 feet per second, which does not exceed published erosive velocity rates in the MassDEP Stormwater Handbook. Additionally, the construction of the access road will require a culvert located such that stormwater runoff will be allowed to cross beneath the access road and discharge off- site as under existing conditions. This crossing will include the addition of a culvert backfilled with three inch minus stone beneath the typical proposed access road cross section. The culvert was sized to handle the lOO-year 24 hour storm event. The maximum velocity of stormwater runoff discharging from this culvert is anticipated to be 4.3 feet per second, which does not exceed published erosive velocity rates in the MassDEP Stormwater Handbook. Stormwater Analysis Models are included in Appendix E. The solar array will be installed over the existing landfill surface using ballast blocks. Ballast blocks may be cast in place over beds of stone required for the leveling of the rack posts, providing a suitable foundation that will not impact the integrity of the landfill cap. Ballast blocks will be cast in place through the use of low ground-pressure equipment to further protect the landfill cap. This method of installation will result in no significant change to the topography of the landfill and will not detrimentally alter drainage patterns. The installation of the ballast blocks will serve as a mechanism to slow stormwater flows, increasing the time of concentration and overall reducing peak discharge rates. Using special conditions under TR55, the existing and proposed cross section was evaluated to compare how the curve number would be impacted. By adding a crushed stone ballast support and access road over the existing cap system cross section, the void ratio of the entire section increased and allows more storage of stormwater and therefore reducing the curve number. The lower curve number and the increased time of concentration result in a decrease in peak discharge rates as a result of the proposed development. As mentioned previously, the proposed improvements will reduce peak discharge rates from the project to areas off-site. Stormwater runoff will continue to flow as under existing conditions with an increase in time of concentration and subsequent reduction in peak discharge rates. 3.1.1 Ballast Installation on Crushed Stone I ABC Pads Crushed stone or crushed uncoated ABC may be used as necessary to create a level surface for installation of the rack components integral with the cast in place ballast blocks. The crushed stone pads will be located above the vegetative landfill cap and will be no more than 6-inches thick. This installation method for the proposed project will improve stormwater runoff conditions by increasing the time of concentration and reducing peak discharge rates. The relatively small size of the ballast blocks and the spacing between blocks and rows of panels will not impede existing stormwater flow paths. As the existing landfill surface within the project limits does not exhibit signs of erosion, the reduced flow rates under proposed conditions will not aggravate any areas of concerns within the project limits. 3.1.2 Erosion Control The existing landfill groundcover will be retained, reducing the chance of erosion of the landfill cap. All construction within the limits of solid waste will occur above the existing impervious landfill cap system. Erosion control measures to be implemented during Citizens Agawam Solar Project -Site Plan Review Application 3-2 I I I I I I I I I I I I I I I I I I I Section 3 Storm water Management construction are indicated on the Site Plans and include silt socks placed along the western boundary of the project site as shown on Sheet 2. See Appendix D for additional information on the Operation and Maintenance (O&M) plan for the solar facility. The O&M Plan includes pre-and post-construction inspections and other ongoing operation and maintenance requirements intended to address erosion control and storm water management. Citizens Agawam Solar Project -Site Plan Review Application 3-3 I I I I I I I I I I I I I I I I I I I Section 4 Compliance with Site Plan Requirements The Site Plan Review application has been developed in accordance with the Town of Agawam's Zoning Ordinance, specifically Section 180-13, Site Plans. The following sections address each requirement of Section 180-13. 4.1 Topography As noted in the Project Description, the limit of work of the proposed project will occupy approximately 10.44 acres of the landfill in the areas of relatively lower slope (less than approximately 10%). The area is well vegetated with a maintained, short grass. Based on the layout and design (Appendix C), the project will not require any significant, clearing, grading, or compaction activities on the landfill during installation or operation of the system. Topography of the site is depicted on the Existing Conditions Plan (Sheet 3). 4.2 Vehicular Traffic Flow & Parking Areas Access to the site is provided via a gated entrance on Agawam Avenue. The existing gravel access road extends from Agawam Avenue along the northern boundary of the project site and crosses the West Springfield property. The project will not result in a significant impact of traffic to the site as access to the site will be limited to monthly site maintenance visits by Agawam Solar and/or its authorized subcontractors. Vegetation will be mowed at least twice a year similar to the current operation for the site. No additional parking is proposed. 4.3 Drainage The solar array will not alter existing drainage patterns of the site as the project will not result in significant changes to the existing topography over the majority of the landfill surface. While the ballast blocks and PV modules are impervious to stormwater, an increase in stormwater runoff will not occur due to ground cover alteration as the existing landfill surface will not be disturbed. The stormwater system is further described in Section 3 above and in Appendix E. 4.4 Public Utilities As discussed in Section 2.2.2 above, two reinforced concrete electrical equipment pads will be located on the landfill cap as shown on Sheet 4 in Appendix C. The equipment pads will be surrounded by a chain link fence with posts cast into the pad. In addition to the inverters noted above, the electrical eqUipment pad will also contain switchgear and a transformer that will step-up the power prior to interconnecting with Eversource's local distribution circuit. The electrical components proposed for the project are shown on the one-line diagram in Appendix C (Sheet El.O). An Interconnection Application was submitted to Eversource and the Impact Study has been completed. Above ground conduits will convey power from the equipment pads to the interconnect location. An emergency system cut-off switch will be installed in a location deSignated by Town emergency personnel. Citizens Agawam Solar Project -Site Plan Review Application 4-1 I I I I I I I I I I I I I I I I I I I Section 4 Site Plan Requirements 4.5 Landscaping No clearing of existing vegetation is proposed as part of this project. The only change in landscaping consists of maintaining the vegetation within the limits of the solar array to avoid shading impacts to the solar system throughout the life of the project. 4.6 Sign Location Signage, indicating high voltages within the limits of the PV array, will be located at site entrances and provide a 24-hour emergency contact and phone number. Each sign shall not exceed two square feet and shall be non-illuminated and comply with the requirements of Agawam Zoning Ordinance, specifically Section 180-79 (business and industrial districts). 4.7 Exterior Lighting No lighting is proposed as part of this project. 4.8 Rendering or Elevations The project does not propose any buildings or structures other than the solar PV array and associated electrical equipment. Project drawings are attached in Appendix B. 4.9 Proposed Screening Existing fencing is located along the western and northern boundaries of the project site. A chain link fence is proposed to be installed around the two equipment pads to provide security. The fence will be affixed directly to the concrete equipment pads. See the plan set in Appendix B for the location of fencing. The site is not accessible from the east due to the presence of Route 5 and from the south due to the Bondi Island Landfill. 4.10 Wetland Resources No jurisdictional wetland resource areas or the associated buffer zones subject to projection pursuant to the MA Wetlands Protection Act (M.G.L. c. 131, Section 40) are located on the project site. A stormwater detention basin located west of the project parcel (and in West Springfield) does not have a 100-foot buffer zone. Additionally, based on a review of the project site utilizing data from the FEMA Flood Insurance Study for the area, the lOO-year flood zone is located on the southeast portion of the parcel. The project is not proposed in the portion of the parcel located within the lOO-year flood zone. Therefore, approval from the Agawam Conservation Commission is not required for the project. Citizens Agawam Solar Project -Site Plan Review Application 4-2 I I I I I I I I I I I I I I I I I I I Section 5 Regulatory Compliance 5.1 Massachusetts Wetlands Protection Act No jurisdictional wetland resource areas or the associated buffer zones subject to protection pursuant to the MA Wetlands Protection Act (M.G.L. c. 131, Section 40) are located on the project site. Additionally, based on a review of the project site utilizing data from the FEMA Flood Insurance Study for the area, the 100-year flood zone is located on the southeast portion of the parcel. The project is not proposed in the portion of the parcel located within the 100-year flood zone. Therefore, approval from the Agawam Conservation Commission is not required for the project. 5.2 Massachusetts Endangered Species Act (MESA) The Massachusetts Endangered Species Act (MESA) is implemented by the Massachusetts Natural Heritage and Endangered Species Program (NHESP) to protect areas determined to contain endangered, threatened or species of special concern. These areas are designated as "Priority Habitats of Rare Species" or "Estimated Habitats of Rare Wildlife" under the MESA Regulations 321 CMR 10.00 and are delineated state- wide in the Massachusetts Natural Heritage Atlas. NHESP also maintains a state-wide listing of "Certified Vernal Pools" which also have special protected status. Current MassGIS MESA mapping is provided on Figure 2 in Appendix A. As shown on the figure, areas mapped as "Priority Habitats of Rare Species" or "Estimated Habitats of Rare Wildlife" do not exist on-site or in the immediate vicinity of the landfill. Based on this information, the project does not require MESA review. 5.3 Massachusetts Environmental Policy Act (MEPA) Massachusetts Environmental Protection Act (MEPA) review thresholds were reviewed for applicability to the proposed solar PV array project. MEPA review is required for projects that involve a state agency action (e.g. Permit) and that exceed a MEPA review threshold at 301 CMR 11.03. As proposed, the project does not exceed any MEPA thresholds and therefore MEPA review is not required. 5.4 U.S. Army Corps of Engineers (ACOE) A U.S. Army Corps of Engineers (ACOE) levee parallels the site's northern and western boundaries. As shown on Figure 2, the project does not extend into the location of the levee. Consequently, the project does not require approval by ACOE. 5.5 Other Permits 5.5.1 NPDE5 Construction General Permit The Environmental Protection Agency (EPA) issues National Pollutant Discharge Elimination System (NPDES) General Construction Permits (CGP) as a part of the effort to minimize detrimental runoff caused by the clearing, grading, and excavating or general construction activities on construction sites. The proposed solar PV array Citizens Agawam Solar Project -Site Plan Review Application 5-1 I I I I I I I I I I I I I I I I I I I Section 5 Zoning Requirements project, including the solar array, electrical equipment and access roads, will impact approximately 10.44 acres of the closed landfill, primarily within areas of relatively low slope. Since the land disturbance will exceed the CGP impact threshold of more than one acre of land, a NPDES CGP permit is required. Prior to construction, a CGP permit will be obtained and a project Storm water Pollution Prevention Plan (SWPPP) will be submitted to the EPA. 5.5.2 Town of Agawam Permits The following local permits will be obtained from the Town of Agawam, as necessary: • Site Plan Review Approval • Building permit • Electrical permit The Proponent has prepared an Emergency Response Plan (ERP) based on consultation with the local Fire Department. The Proponent has met on-site with the Fire Department to review emergency access issues. The ERP has not been finalized; however, the current draft is provided in Appendix F. 5.6 Electric Interconnection The Proponent and Eversource will negotiate an interconnection agreement (or permit) to allow electric power generated by the proposed solar PV array project to be distributed through Eversource's local distribution circuit. The Interconnection Application was submitted and the Impact Study has been completed. J : \C\C0917\Perm itting\Agawam\SPR \Agawam_SPR_application. docx Citizens Agawam Solar Project -Site Plan Review Application 5-2 I I I I I I I I I I I I I I I I I I I Tlghe&Bond aUld on USGS fo_"~~,, Mop for Splir.Qr .. ld Soutll, , ... fwd 10 197!l. IO-Foot C..,tou, lnto",,1 Cird .. i'''Iic.a, .. !.OO·f.'''.I'IdI>.l~"",lor.dl o 1:24,000 1,000 Feet 2,000 FIGURE 1 SITE LOCATION MAP Citizens Agawam So lar Project M Street Agawam, Massachusetts March 2015 C'()917 I I I I I I I I I I I I I I I I I I I LEGEND ~ Nl-£SP Certified Vemal PooI5 ~ NHESP Potential Vemal Poo. e Commurity Public Water Supply· SlIIac .. Watel C Commurily Publ;c Water Supply· Groundwllter • NoIl-COfTWTIUnity Non-TraJl$~ Public Wat..-Supp.ly • No ... CommurOty Tranaient Public W". Supply c::::J EP4 DMigNlled Sole So...:e Aquofer (;S'S] DEP Approved W .. head Pro!edion Are. tZor. II) EZZl DEP InllHlm W •• head ProtecOOnArea (IWPAI [Z::Ll NHESP Prioritv Habilata lor A..a Sp&Qes cs::g NHESP Estimated HIIb~81& Iof R.are Wildile I I ! I P~1c Surface Walllr Supply Prclectbn Area (ZoneA) Pl'OCected and R.ea-eellOnat Open Sp8(:fI r:z.:zJ "' .. 01 C~ EnvifOmlan'-l Cono;:em (ACEe) -- ... PubrlC SurfaOll Walar Supply (PSWS) Int • .w;I Welhlflds(MAOEP) CO~ Wlldands (M" OEP) W_rbodies Major Orai1age 68$in SlI) Dramage Bas ... Umiled Acc8'S6 Highway Mu~L.'" Highway, NOT llmiled Aoce&S ou.. No..ntItored Hoghway Major Road· Colledol MillO! Street or Road TOIm Boun:!ary Colrlly Bol.ndary Trade /)tTIlIII Trail P!:M'aliine P.cel Boundaries D ~~~ng Rft5lUn:8 _ 100 YNI Flood Zone _levee Centerlile _FloodWaI) ---..... oo 1:4,800 '" <0, Feet FIGURE 2 PRIORITY RESOURCE MAP Citizens Agawam Solar Project M Street Agawam, Massachusetts ~ta $Ource: Of nee of Geogrilphlc and Environmental Informlltlon(MilssGIS), Commonwealth of MIIS5achu$etls Exe<utive Office of Environmental Affllirs. Oata valid ,,"s of Febrll'ry 2014. T91e&8ond March 2015 Tighe&Bond o 1:4,800 200 Feet 400 ORTHOPHOTOGRAPH Citizens Agawam Solar Project M Street Agawam, Massachusetts March 2015 C~17 I I I I I I I I I I I I I I I , • i I I i • 1 I I I t ; I • I ! CITIZEN AGAWAM SOLAR PROJECT · AGAWAM, MASSACHUSETTS SHEET NO. TIne 1 COVER SHEET 1 NO'fES. LEGEND AND DETAILS 3 EXIS'I1NO CQN0Il10H8 SITE PLAN 4 PROPOSED SITE LAYOUT PERMIT SET NOT FOR CONSTRUCTION SITE PLAN REIVEW APPLICATION SET NOT FOR CONSTRUCTION MARCH 2015 SCAlE: 1 :12000 DEVELOPER · CITIZENS AGAWAM SOLAR, LLC 88 BLACK FALCON AVENUE SUITE 342 . BOSTON, MA 02210 TIghe&Bond www.t1ghebondcom COMPLETE SET 4 SHEETS I I I I I I I I I I I I I I I I I I I WEll! ~ co • .. • hlANHa.£ a£AN <X1T GAS VENT H'tORANT WETlAND R£SCIJRCf AREA Me Cb UlU'TY POL£ • wotITORIfrf(; 'I1EU.. CAPPED PIPE ___________ -.218 ------1N1ER'NED1A.1E torTOLIRS - -__ -INDEX CONTOURS -""'--- ----- ....... _-- ~ ----.----.....,... GF'Nf'BN NQlES; PROPOSED CONTOuRS PftOf'ERlY lJP£ EXlSTtNC fASENENT EXlSltNC CHIIIH UKK ftNC:E PROPOSED CHAIN LINK FENCE EROSION CONlROL I..IMITor~ APPRO)( I..JhIT ~ R£J"USE _UN' PROI'05ED El£C1RtC UN< ""ALE 1. FIELD ~FY EXISTING CONDITIONS PRIOR TO CONSTRUCTION. If F\EU) OOHG\t\OHS ME OBSER'® lM~T SGHIACHm.Y "MY FROM THOSE SHOWN ON THESE PLANS, IMMEDIATELY NOlIN THE ENCINEER F'OR RESOLUTION OF "THE OONfUCTlNG INFORMATION. 2. CQIIPlY 'filTH ost-tA,'s LA1EST STAt«>Mt/S, PROVIDE AU.. At«SHED GRACE: ...., MEDIUM VOlTAGE AC TRENCH DETAIL NO SCALE ~ 1. SECTJaII SHOYIN IS FOR OfF, lANOFlU ~PPUCA.l1ONS ONLY. ANY .... CCESS ROAn CROSSINGS SHOULD USE GRAVEL SECTION AT SURFACE:. CONDUIT SHALL BE SCH. .0 PVC FOR lHE OVERLAND RUN AND SCH. 80 PVC FOR "tHE ACCESS ROAD CROSSING. """" zoo: elAIt fLlRDO( ~ Sl..1'SOn OR ........... <OUAI. -~ fit. TfIEXX CO!FOST Sl. TSOXX 1X-1e' (nP) ~TO EIE PROTECTED 'MlftK ZONE MY liWKII ..",.. 1, ALL ..... TERIAl IS TO IIIEET ..... lRElO( sPfC:IflC.A.lIONS. 2. co.IPOST. SOL. ROC!( NtD saD FILL Ttl WEET APf'UCATlCJoIS REQUlRalENrs. 3. SLlSOXX DfPICTEO IS FOR MINIMUM SUPES, GiREAlQ{ SLOPES MAY REQUIRED LARGER SOCKS. 4. COMPOSf WolERW.. 10 BE DISPERSED OM Sfl£' ... 1'rtIH UWlTS Cf' WORK, AS DlRtC1ED, £8OSfQH CQNIROt MBRIEB NO SCAlI: DEHSE GRADED CRUSHED Sl'ON[ at ClEAN, GROUP 1 NON_WOVDJ GEOTrxmc-I 'ABRIC CORRlIaA'JED tIlPE aJL\'ERT(S) ( ... lOt .... vAUHT) """'" ".... A ....., l FtET JIhac) ACUss ROAD ON EAai sa: OF aK:ISSINO o T'tJIelTYf'E2TYP1!!TVPI!!. '4'12'9'0'4' W2 .. 10' 10' 16' I d,,, I~' t':.""I"~' ; £XIS'fWG l..ARJf1/..l.. CAP CULY£BJ CROSSING Dmlb NO SCALE L\., O£NOru ~\rnAGE STlJN[ DiAIAElER "'ERE LENGlHS V""· EXl5nNG GRADES. -~ ~ U:, "},{ "'C~"..... D"H Il" :J p" ..... ~"'U REO.lREWENTS Cf' OSHA'S EXCAVA"1XI( STANDARDS. lNaJ..IOING BUT NOT UNTED lQ Pft(MSION FOR A CCltIFETDfT P£RSOfrl ON SITE AND Al.I... DOQ..IMEMTATION REQUIRING CZRTlFlCATIOH BY A PROFESSIONAL 04Qtr1EER. tJr«::OA"lm ABC (POt MASSOEP STNrIlNIDS) GRADE ROAIYWAY 50 STClAMW"'TDI --------------=:::--:::-;p U J..c.. i I i 'j;j It' A 3. MAINTAIN AU. unuTlES IN TliE AREAS UNDER CONSTRUC11~, LEA IJE ALl PlP£$, SWALES AND STRlICTUre; 'MTHIN THE UMFT Of THIS OONTIt,t,CT IN CLEAN AND OPERASLE CONDITION AT THE eot.IPl£TION OF THE WORI<. TAKE AU. tECESSAR'I' PRECAUllONS TO PRE'vtNT SAND AND SIlT F"ROU DlS1URBED AREAS F'ORIoI £.H1ERIIIO THE SYSTDI. CONTRACTOft IS ReiP'ONSIBLf fOft OAWAQ[ !iUSTAINED TO Nf'( EXJS1lHO U1IJTIES NItJ "B.1.. WN<E REPAIRS lHAT CQNPl.y M1H REQI.IIIIDIEHTS Of" O'IIINER OR RESPECTI\IIE U1lJTY COWPANY. 4. L.OAt.I AND saD AU. DlsnJRBED AAEAS I.H.ESS OTliER't1tS£ SPECIflm. 5. CONSlMICTlQN ACllVlTIES ¥!tLL OCCUR ON A CLOS£O AND CAPPED I.ANDFU. FOllOW AU. APPUCABI.L PElUT CaotDlTlONS, REGl..U.T1ONS AND STANDARDS CK PRAC11CE ASSOOIATED WITH t.AHOfI1. COH$TRUCTlON. "MS IfQ.I.US,. BUT IS NOT LMltD TO lOW GROJNO PRESStJR£ EQlJlPYENT ~ tROSlOM CON1RQ.. IIEASUR£S. 6. All UTlUTY P<X..ES YIIl.L BE JNSTALLED ouT!il)[ THE UWlTS or 1"HE lAHOFlU. CAP fflOSKlH mr.ITRO! NQIDij' 1. INSTAll. AU. £ROSKlH CONlRa.. IIV.SURES SHO'Mi. SPECiRED AND REQl.WD 8'1' THE ENClItER PRKlR TO AMY CO"S1'RUC1lON OR I61ED1AlaV UP<lH REatJE'ST. IUoNTAIN AU. SlU04 00NTR0l MEASURES UN1I. FIW..-SURF'ACE,1REAlWENTS AR£ IN PlACE JHJ/OR UHTI. POIIIAHEJrfT \€QElAllOH IS ESTA8LJSH!D. /WASlE/ ACCESS ROAD DETAil NO scm: now IS NOT .... 1"ORFTED (PIlCH TO SWALE) 3 -.ovEN GEOTDCTlI£ FAeRIC EROSION CONTROl BUHl<ET A t ------------ ~c ~, :?'~ U"Y. Iy J T)1'f ~ ;( .l ~ ~. &r! ~ ========::::~: I G: Wi Ji --::1=---£XlS""" <It_" =====~~ ____ ~c;p_ ... ---~------£XJST1NG EXlSTlf'lC u.NOf1lI IIA ....... lIghobond.com / Cltizens Agawam Solar Project 2. MARK WORK UNIT UHf(S) PRIOR TO STAltTlHG WORK. 00 NOT DISTURB \lEGETATlON AND TOPSOIL BEYOND THE P~OSED UNIT LIIIE. COORDINATE Win-! THE ENGINEER FOR THE I,.OCAllONS FOR THE TEWPORARY STOCKPIUNG Of' TOPSOIL DUI'UNG CONS1RUClION. l. F1HE GRADE AND IUWEDIAlEl..V SEED -'l.L SIDE SLOPES. SHOUl.DER MEAS. AND DlSTUft!£D ~AnD AREAS. ALL GRADlNC TO BE " IIlAXIlJM SL.OP£ t;K 3d, COMPACTED, AND STABIUlED. ;:6 ~....:~~~s CREAT£R SECTION A.A Agawam. :CUP 1 NON-WOVEN GEommLE. IMassachusetts O\IERLAP SEAMS 12" MIN +. RDlO\£ AHO IXSPOS£ f6 ALL SLT lRAPPEJ) AT 8AItNERS IN UF'l..NtD AREAS OUTSll)( IUftR ZQrU:S. REWCM: WAlERIALS DEPOSmD IN J,MY TDIPCRAAY stT'TUMG BASIJII AT THE carwt.£1ION or 1l£ PRQ..£CT. M:SmRE IoI...L otS1UR8m AREAS TO PRE-CONS1RUC'TlON CONorOOH$. 5. REMOVE ALL seDIMENTS FROtr.4 SILT L..J.DEN WA TEA PRIOR Ttl RELEASE C)()'MoISTREAM <F 1ME DEW" lERfD AREAS. 6. DEWATER AS NECESSARY TO KEEP CONSTRUcnON AREAS rna OF WATER. DISCHARGE WAlEFI FROt.t DEWAmaNC TO APPROPRIATE LOCAnoN IHJ 1I1WOUT ~TATION. 7. ~.w. SEDIIO(l TfU,O((I) ON PU8UC 1IiGHt-oF-WA'tS AT "Il£ Q«I QF EAQ( 0"'1'. 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WH 11m I llll!! iiiiiiii'il'~ I ~~~~~ ;~!~;~~;;;; ~~~~in~ r ii~l 11' ~~~~~~iiH~ ~€iU~~~ @ ii; Illi;;;;;;:;; II II @ ® "'-------------" - - - - - - - ---. ------ - - - I I I I I I I I I I I I I I I I I I I CITIZENS AGAWAM SOLAR PROJECT SOLAR PV OPERATIONS & MAINTENANCE PLAN ~&Bond Operations & Maintenance Plan The Operation & Maintenance (O&M) plan for the solar array is explained below. It is not intended that the protocol listed here will replace the current O&M activities for the landfill, rather update the existing procedures to meet the needs of the solar array. Prior to the start of construction, the site will be inspected to document current conditions and areas identified as needing maintenance, if any, will be addressed as appropriate. Following construction and re-establishment of any vegetation impacted during construction, the operation and maintenance of the landfill should not be significantly altered from the current requirements. The site should continue to be inspected regularly for erosion and to ensure the stormwater system is operating as designed. Any erosion to the landfill surface should be stabilized and repaired immediately upon discovery. Additionally, vegetation management in the vicinity of the panels and at the interface of the ballast/gravel base will require careful, manual maintenance. Citizens Agawam Solar, LLC (Agawam Solar) is responsible for maintaining and servicing the solar electric system post construction. This work will be performed through a combination of Agawam Solar's personnel, their-approved subcontractors, or authorized vendor (manufacturer of components used in the solar PV system) representatives. The area where the Solar Electric System is located and the immediate proximity of the electrical equipment shall be treated as a Secure Facility, accessible only by authorized personnel. Access to these locations should be arranged by contacting the Owner or Operator. Operations at the site will be minimal. The panels are static, and are monitored remotely on a continuous basis over the internet. On a daily basis, the applicant will be responsible for responding to alerts from system's automated alert system regarding potential system malfunction. Additional maintenance at the site will typically consist of the following. Equipment Maintenance Agawam Solar and/or its authorized sub-contractors will conduct the following tasks to ensure maintenance and proper operation of the solar PV system equipment. • Perform a visual inspection of the eqUipment including subassemblies, wiring harnesses, contacts and major components and record ambient operating tem perature. • Check inverter modules for the following: IGBT's and inverter boards for discoloration Power capacitors for signs of damage Record all voltage and current readings via the front display panel Check appearance/cleanliness of the cabinet, ventilation system and insulated surfaces Check for corrosion on terminals and cables Torque terminals, connectors and bolts as needed Check all fuses for open or signs of heating (Inverter & Combiner) Check the condition of both the AC & DC Surge Suppressors 1 I I I I I I I I I I I I I I I I I I I OPERATIONS & MAINTENANCE PLAN Check the operation of all safety devices (E-Stop, Door Switches, GFDI) Correct all deficiency detected • Inspect (clean or replace) air filter elements • Complete Maintenance Schedule Card and issue a written inspection report • Install and perform any recommended Engineering Field Modifications, including software upgrades. Site Maintenance Agawam Solar and/or its authorized subcontractors will perform site maintenance activities as follow, to ensure safety and to maintain site aesthetics. • Mowing the grass between the rows of racks a minimum of twice a year, possibly more if the growth of grass requires it. The height of the grass will be similar to the adjacent cleared area of the site and will be maintained at a level to reduce the risk of grass fires. No herbicides or chemicals will be used to manage vegetation. • Personnel in a pickup-type truck will visit the site monthly to inspect the inverters for proper performance and perform maintenance as needed. The condition of signage and proper functioning of access gates will be inspected as well. Array Cleaning Procedure Agawam Solar and/or its authorized subcontractors will clean the PV panels if the system is outputting a noticeably lower wattage AC or there is an accumulation of dirt on the modules. Maintaining module cleanliness is crucial to maximizing system performance. No harmful chemicals shall be used in the cleaning of the modules. Cleaning of the panels will be done with water and a soft-bristled broom if needed. Note that the PV system does not need to be turned off during cleaning. 2 I I I I I I I I I I I I I I I I I I I .,.,;i~" ~~.f<Y / ------ ) • o o{J • • • o "-;.. .. // " ./ o · .,;' ';>' .. ' ;' ;- ;' ".;/' /.,/ ". /" f . /. //~ ',0 () ,/ , I I ,,//' .j . "./' .' ,,<,'. ' \\'~"'\ ,!., ' " \\"\ , ,', , ~\ ::~:" ,p,. 'Pi ';i' ";\ '.; '\' ~- ~. (2) 18" CUL \ \ '.';, . '. " ...... '\,"., . , ' , , " \ \ \ .... " " , ,. \ , '·".I\A · t " i.,i\,·.~.,_\.·\ \ • I, \ ~ . "'; ,.' \ \ ''',. .' 'yo " ; , \, \\ , "'. / /, () Q ', "0: ',\, 'i\ \ \ .", .~." ... , , . /, / .:. / ,(j' \' \ ,~, \I> 'i\ ~ ! \ I ',; ,I" . I ~ .... \ ;! I, Iil .," ! "\\' 'I \ \ \ ' . :i " '. ! Ii dl ' 1 \ \, \ \ \ i', , . '1' ' ,1 , I ' i : I ". ~ I;Jil ~ . : ' '1: ' \ " '\ \, : ' '. \ I, '. ' ! .- '." //1,":\" \: " () .•..... "'T I ' -~:;~:-~~-= ~5:--, ----. ~:9'~~~\,:~0_~~-~"~:; ~~~~ .• c.-.• ;,-•• ' =: '~~----·'~:~ •• ~~~;-:/i ' ;~~> 4 ~ ~-4-~' f'~ :- --~-----------------// ... ------------- "-) / :.:" --",.---" \ /- " " ", '. \. " , \" ,.,",' , \. ',\ . , .",\., \:,,: -', \ ,'" ,. . >~~ () () \, " -, . -.-. , " '. " '. CITIZENS AGAWAM SOLAR PROJECT FIGURE 4 DRAINAGE AREA MAP 11ghe&Bond ConsuUing Engineers www.tighebond.com .\ / SCALE. 1"=100' DATE: 3/17/2015 I I I I I I I I I I I I I I I I I I I ----~ Drainage Area 2 - Central area draining to north swale Culvert Flow long proposed gravel road Drainage Area 1 - Northwest of Access Road Drainage Diagram for Agawam-Hydrology Prepared by Tighe & Bond. Inc .• Printed 3/18/2015 HydroCAD® 9.10 sin 01580 CO 2010 HydroCAD Software Solutions LLC I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type 11/ 24-hr 2-Year Rainfall=3.00· Printed 3/18/2015 Page 2 HydroCAD®9.10 sfn 01580 ©2010 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Drainage Area 1 -Northwest of Access Road Runoff = 3.10 cfs@ 12.16 hrs, Volume= 0.270 af, Depth= 2.07" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Type III 24-hr 2-Year Rainfall=3.00" Area (sf) CN Description • 62,776 91 Landfill Surface • 1,000 98 Cement Concrete Equipment Pad • 4,292 89 Gravel Roadway 68,068 91 Weighted Average 67,068 98.53% Pervious Area 1,000 1.47% Impervious Area Tc Length Slope Velocity Capacity Descri ption (min) (feet) (ft/tt) (ft/sec) (efs) 6.1 50 0.1333 0.14 Sheet Flow, Grass: Bermuda n= 0.410 P2= 3.00" 1.4 120 0.0413 1.42 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.4 50 0.0960 2.17 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 3.7 235 0.0232 1.07 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 11.6 455 Total I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Citizens Agawam Solar Project Type 11/ 24·hr 2· Year Rainfall=3.00· Printed 3/18/2015 Page 3 3· 2 1 5ubcatchment 15: Drainage Area 1 -Northwest of Access Road Hydrograph I 3.10 cfs I 1-Runoff~ Type 11124~hr2-Year Rainfall=3.00" Runoff Area=68,068 sf Runoff Volume=O.270 af Runoff Depth=2.07" Flow Length=4SS' Tc=11.6 min CN=91 o~~~.~,~~~~~~~~~~ o 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type 11/ 24-hr 2-Year Rainfalf=3.00· Printed 3/18/2015 Page 4 HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Summary for Subcatchment 2S: Drainage Area 2 -Central area draining to north swale Runoff = 3.90 cfs @ 12.37 hrs, Volume= 0.473 af, Depth= 2.07" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Type III 24-hr 2-Year Rainfall=3.00" Area (sf) CN Descn ption * 119,453 91 Landfill Surface 119,453 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/tt) (ft/sec) (cfs) 13.5 50 0.0182 0.06 Sheet Flow, Grass: Bermuda n= 0.410 P2= 3.00" 1.9 125 0.0242 1.09 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 3.2 295 0.0475 1.53 Shallow Concentrated FlOW, Short Grass Pasture Kv= 7.0 fps 8.5 300 0.0070 0.59 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 27.1 770 Total Subcatchment 2S: Drainage Area 2 -Central area draining to north swale Hydrograph 4- 3- 2- 1- I 3.90 cfs I Type III 24-hr 2-Year Rainfall=3.00" Runoff Area=119,453 sf Runoff Volume=O.473 af Runoff Depth=2.07" Flow Length=770' Tc=27.1 min CN=91 o~~~.~~.~~~.~~~,~~~.~~,~~,~~~,~~~.~~~~~~ o 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) 1-Runoff~ I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Citizens Agawam Solar Project Type 111 24-hr 2-Year Rainfal/=3.00· Printed 3/1812015 Page 5 Summary for Reach 5R: Flow along proposed gravel road I nflow Area = 1.563 ac, 1.47% Impervious, Inflow Depth = 2.07" for 2-Year event Inflow = 3.10 cfs@ 12.16 hrs, Volume= 0.270 af Outflow = 3.09 cfs @ 12.16 hrs, Volume= 0.270 af, Atten= 0%, Lag= 0.2 min Routing by Stor-Ind+ Trans method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Max. Velocity= 3.45 fps, Min. Travel Time= 0.1 min Avg. Velocity = 0.97 fps, Avg. Travel Time= 0.5 min Peak Storage= 27 cf @ 12.16 hrs Average Depth at Peak Storage= 0.26' Bank-Full Depth= 0.50', Capacity at Bank-Full= 10.10 cfs Custom cross-section, Length= 30.0' Slope= 0.0667 '/' Constant n= 0.040 Earth, cobble bottom, clean sides Inlet Invert= 74.00', Outlet Invert= 72.00' Offset (feet) 0.00 1.00 4.00 5.00 Elevation (feet) 0.00 -0.50 -0.50 0.00 Chan. Depth (feet) 0.00 0.50 0.50 0.00 Depth (feet) End Area (sg-ft) Perim. (feet) Storage (cubic-feet) 0.00 0.50 0.0 2.0 3.0 5.2 o 60 Discharge (cfs) 0.00 10.10 I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 2-Year Rainfall=3.00· Printed 3/18/2015 Page 6 HydroCAD® 9.1 0 sin 01580 © 2010 HydroCAD Software Solutions LLC 3- i 2- ~ iL 1 Reach 5R: Flow along proposed gravel road Hydrograph I 3.09 cfs I Inflow Area=1.563 ac Avg. Flow Depth=0.26' Max Vel=3.45 fps n=0.040 L=30.0' 5=0.0667 'I' Capacity=1 0.1 0 cfs 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) -Inflow -Outflow I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Citizens Agawam Solar Project Type 11/ 24-hr 2-Year Rainfalf=3. 00· Printed 3/18/2015 Page 7 Summary for Pond 4P: Culvert I nflow Area = 4.305 ac, 0.53% Impervious, Inflow Depth = 2.07" for 2-Year event Inflow = 5.95 cfs@ 12.25 hrs, Volume= 0.743 af Outflow = 5.95 cfs @ 12.25 hrs, Volume= 0.743 af, Atten= 0%, Lag= 0.0 min Primary = 5.95 cfs @ 12.25 hrs, Volume= 0.743 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs I 2 Peak Elev= 69.66' @ 12.25 hrs Flood Elev= 72.00' Device Routing Invert Outlet Devices #1 Primary 68.75' 18.0" Round Culvert X 2.00 L= 20.0' CPP, mitered to conform to fill, Ke= 0.700 Inlet I Outlet Invert= 68.75' 168.50' S= 0.0125 'r Cc= 0.900 n= 0.013 Corrugated PE, smooth interior ~mary OutFlow Max=5.94 cfs @ 12.25 hrs HW=69.66' (Free Discharge) l=Culvert (Barrel Controls 5.94 cfs @ 3.82 fps) :i u -~ 0 ii: Pond 4P: Culvert Hydrograph I 5.95 cfs I 6- Inflow Area=4.305 ac 5 Peak Elev=69.66' 4-18.0" Round Culvert x 2.00 3 n=0.013 L=20.0' 2-5=0.0125 'I' 1 o~~~~~~".~,~~~,~.~,~.,~~~;;;;;,;.~,~.~,~~~~ o 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) -Inflow -Primary I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type 1/1 24-hr 25-Year RainfaJ/=5.30· Printed 3/18/2015 HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 1S: Drainage Area 1 -Northwest of Access Road Runoff = 6.20 cfs @ 12.16 hrs, Volume= 0.557 af, Depth= 4.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Type III 24-hr 25-Year Rainfall=5.30" Area (sf) CN Description • 62,776 91 Landfill Surface • 1,000 98 Cement Concrete Equipment Pad • 4,292 89 Gravel Roadway 68,068 91 Weighted Average 67,068 98.53% Pervious Area 1,000 1.47% Impervious Area Tc Length Slope Velocity Capacity Descri ption (min) (feet) (ftfft) (ftfsee) (efs) 6.1 50 0.1333 0.14 Sheet Flow, Grass: Bermuda n= 0.410 P2= 3.00" 1.4 120 0.0413 1.42 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.4 50 0.0960 2.17 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 3.7 235 0.0232 1.07 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 11.6 455 Total I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type 111 24-hr 25-Year Rainfall=5.30· Printed 311812015 HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Page 9 ~ J!! u -~ 0 iL 6 5 4 3 2- 1 5ubcatchment 15: Drainage Area 1 -Northwest of Access Road Hydrograph I 6.20 cfs I 1-Runoffl Type J1124-hr 25-Year Rainfall=5.30" Runoff Area=68,068 sf Runoff Volume=O.557 af Runoff Oepth=4.27" Flow Length=455' Tc=11.6 min CN=91 o~~~~~~~~~~~~~--~ o 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type //I 24-hr 25-Year Rainfall=5.30· Printed 3/18/2015 HydroCAD®9.10 sin 01580 ©2010 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 2S: Drainage Area 2 -Central area draining to north swale Runoff = 7.81 cfs @ 12.36 hrs, Volume= 0.977 af, Depth= 4.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Type III 24-hr 25-Year Rainfall=5.30" Area (sf) CN Description • 119,453 91 Landfill Surface 119,453 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/tt) (ft/sec) (cfs) 13.5 50 0.0182 0.06 Sheet Flow, Grass: Bermuda n= 0.410 P2= 3.00" 1.9 125 0.0242 1.09 Shallow Concentrated Flow, Short Grass Pasture Kv=7.0fps 3.2 295 0.0475 1.53 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 8.5 300 0.0070 0.59 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 27.1 770 Total Subcatchment 2S: Drainage Area 2 -Central area draining to north swale Hydrograph 8 I 7.81 cfs I 1-Runoff~ 7-Type III 24-hr 25-Year Rainfall=5.30" 6~ Runoff Area=119,453 sf -$ <) 5-Runoff Volume=O.977 af -Runoff Oepth=4.27" ~ 4~ 0 Flow Length=770' ii: 3-Tc=27.1 min 2 CN=91 1 ./ 0 , , ~ . 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type 11/ 24-hr 25-Year Rainfall=5.30· Printed 3/1812015 HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Summary for Reach 5R: Flow along proposed gravel road I nflow Area = 1.563 ac, 1.47% Impervious, Inflow Depth = 4.27" for 25-Yearevent Inflow = 6.20 cfs @ 12.16 hrs, Volume= 0.557 af Outflow = 6.17 cfs @ 12.16 hrs, Volume= 0.557 af, Atten= 0%, Lag= 0.2 min Routing by Stor-lnd+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Max. Velocity= 4.33 fps, Min. Travel Time= 0.1 min Avg. Velocity = 1.21 fps, Avg. Travel Time= 0.4 min Peak Storage= 43 ef @ 12.16 hrs Average Depth at Peak Storage= 0.38' Bank-Full Depth= 0.50', Capacity at Bank-Full= 10.10 cfs Custom cross-section, Length= 30.0' Slope= 0.0667 '/' Constant n= 0.040 Earth, cobble bottom, clean sides Inlet Invert= 74.00', Outlet Invert= 72.00' Offset (feet) 0.00 1.00 4.00 5.00 Elevation (feet) 0.00 -0.50 -0.50 0.00 Chan. Depth (feet) 0.00 0.50 0.50 0.00 Depth End Area (feet) (s9-ft) Perim. (feet) Storage (cubic-feet) 0.00 0.0 0.50 2.0 3.0 5.2 o 60 Discharge (efs) 0.00 10.10 Page 11 I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 25-Year Rainfall=5.30· Printed 3/18/2015 HydroCAD® 9.10 sin 01580 © 201 0 HydroCAD Software Solutions LLC -.l!! <.) ~ ~ u:: 6- 5- 4- 3 2 1 Reach 5R: Flow along proposed gravel road Hydrograph 1 6.17 cfs I InflowArea=1.563 ac Avg. Flow Depth=0.38' Max Vel=4.33 fps n=0.040 L=30.0' 5=0.0667 '/' Capacity=10.10 cfs 0~~~,~~~~~~,~~~,~~.J o 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) Page 12 -Inflow -Outflow I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type fII 24-hr 25-Year Rainfal/=5.30" Printed 3/1812015 HydroCAD® 9.10 sin 01580 © 201 a HydroCAD Software Solutions LLC Summary for Pond 4P: Culvert I nflow Area = 4.305 ac, 0.53% Impervious, Inflow Depth = 4.27" for 25-Year event Inflow = 11.95 cfs@ 12.23 hrs, Volume= 1.533 af Outflow = 11.95 cfs @ 12.23 hrs, Volume= 1.533 af, Alten= 0%, Lag= 0.0 min Primary = 11.95 cfs @ 12.23 hrs, Volume= 1.533 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs /2 Peak Elev= 70.18' @ 12.23 hrs Flood Elev= 72.00' Device Routing #1 Primary Invert Outlet Devices 68.75' 18.0" Round Culvert X 2.00 L= 20.0' CPP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 68.75' /68.50' S= 0.0125 'r Cc= 0.900 n= 0.013 Corrugated PE, smooth interior ~mary OutFlow Max=11.92 cfs @ 12.23 hrs HW=70.17' (Free Discharge) l=Culvert (Barrel Controls 11.92 cfs @ 4.43 fps) Pond 4P: Culvert Hydrograph Page 13 13~ I 11.95 cfs I -Inflow 12~ 11~ 10-: 9-: ~ 8-: J!! u 7 -~ 6-: iL 5~ 4~ 3~ 2-: 1" 0 0 2 4 6 Inflow Area=4.305 ac Peak Elev=70.18' 18.0" Round Culvert x 2.00 n=0.013 L=20.0' 5=0.0125 '/' 8 10 12 14 16 18 20 22 24 26 28 30 -Primary I Time (hours) I I I I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 100-Year Rainfall=6.50· Printed 3/18/2015 HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Page 14 Summary for Subcatchment 1S: Drainage Area 1 -Northwest of Access Road Runoff = 7.79 cfs @ 12.16 hrs, Volume= 0.709 af, Depth= 5.45" Runoff by SCS TR-2o method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Type III 24-hr 10o-Year Rainfall=6.50" Area (sf) CN Description * 62,776 91 Landfill Surface * 1,000 98 Cement Concrete Equipment Pad * 4,292 89 Gravel Roadway 68,068 91 Weighted Average 67,068 98.53% Pervious Area 1,000 1.47% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) (ets) 6.1 50 0.1333 0.14 Sheet Flow, Grass: Bermuda n= 0.410 P2= 3.00" 1.4 120 0.0413 1.42 Shallow Concentrated Flow. Short Grass Pasture Kv= 7.0 fps 0.4 50 0.0960 2.17 Shallow Concentrated Flow. Short Grass Pasture Kv= 7.0 fps 3.7 235 0.0232 1.07 Shallow Concentrated Flow. Short Grass Pasture Kv= 7.0 fps 11.6 455 Total I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 100-Year Rainfall=6.50" Printed 3/18/2015 HydroCAD®9.10 sin 01580 ©2010 HydroCAD Software Solutions LLC Page 15 8 7 6 -J!! 5-1.) -~ 4-0 ii: 3- 2- 1- 0 0 Subcatchment 1S: Drainage Area 1 -Northwest of Access Road Hydrograph I 7.79 cfs I 1-Runoff. ., ., ., Type III 24-hr 100-Year Rainfall=6.50" Runoff Area=68,068 sf Runoff Volume=O.709 af Runoff Depth=5.45" Flow Length=455' Tc=11.6 min CN=91 2 4 6 8 1 0 12 14 16 18 20 22 24 26 28 30 Time (hours) I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 100-Year Rainfal/=6.50· Printed 3/18/2015 HydroCAD®9.10 sin 01580 ©2010 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment 2S: Drainage Area 2 -Central area draining to north swale Runoff = 9.83 c1s @ 12.36 hrs, Volume= 1.245 af, Depth= 5.45" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Type III 24-hr 100-Year Rainfall=6.50" Area (sf) CN DeSCription • 119,453 91 Landfill Surface 119,453 100.00% Pervious Area Tc Len9th Slope Velocity Capacity Description (min) (feet) (ft/fl) (ft/sec) (cfs) 13.5 50 0.0182 0.06 Sheet Flow, Grass: Bermuda n= 0.410 P2= 3.00" 1.9 125 0.0242 1.09 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 3.2 295 0.0475 1.53 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 8.5 300 0.0070 0.59 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 27.1 770 Total Subcatchment 25: Drainage Area 2 -Central area draining to north swale Hydrograph 11 10C 9 8c ~ 7c J!! 6 CJ -~ 5c iL 4 3 2c 1 0 0 2 19.83 cfs I Type III 24-hr 100-Year Rainfall=6.50" Runoff Area=119,453 sf Runoff Volume=1.245 af Runoff Oepth=5.45" Flow Length=770' Tc=27.1 min CN=91 'I 'I 'I 'I . t " "' "I 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) 1-Runoff. I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 100-Year Rainfafl=6.50· HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Printed 3f18f2015 Page 17 Summary for Reach 5R: Flow along proposed gravel road I nflow Area = 1.563 ac, 1.47% Impervious, Inflow Depth = 5.45" for 1 DO-Year event Inflow = 7.79 cfs @ 12.16 hrs, Volume= 0.709 at Outflow = 7.77 cfs @ 12.16 hrs, Volume= 0.709 af, Atten= 0%, Lag= 0.2 min Routing by Stor-ind+ Trans method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs Max. Velocity= 4.66 fps, Min. Travel Time= 0.1 min Avg. Velocity = 1.32 fps, Avg. Travel Time= 0.4 min Peak Storage= 50 cf @ 12.16 hrs Average Depth at Peak Storage= 0.43' Bank-Full Depth= 0.50', Capacity at Bank-Full= 10.10 cfs Custom cross-section, Length= 30.0' Slope= 0.0667 'J' Constant n= 0.040 Earth, cobble bottom, clean sides Inlet Invert= 74.00', Outlet Invert= 72.00' Offset (feet) 0.00 1.00 4.00 5.00 Elevation (feet) 0.00 -0.50 -0.50 0.00 Chan.Depth (feet) 0.00 0.50 0.50 0.00 Depth End Area (feet) ( sg-ft) Perim. (feet) Storage (cubic-feet) 0.00 0.0 0.50 2.0 3.0 5.2 o 60 Discharge (cfs) 0.00 10.10 I I I I I I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 100-Year Rainfall=6.50" Printed 311812015 HydroCAD® 9.10 sin 01580 © 201 0 HydroCAD Software Solutions LLC 8- 7 6 ~ 5-1) -~ 4-0 ii: 3 2- 1- 0 0 2 4 Reach 5R: Flow along proposed gravel road Hydrograph I 7.77 cfs I Inflow Area=1.563 ac Avg. Flow Oepth=0.43' Max Vel=4.66 fps n=0.040 L=30.0' 5=0.0667 '/' Capacity=1 0.1 0 cfs 'I 'I 'I 'I; 6 8 10 12 14 16 18 20 22 24 26 28 30 Time (hours) Page 18 -Inflow -Outflow I I I I I I I I I I I I I I I Agawam-Hydrology Prepared by Tighe & Bond, Inc. Citizens Agawam Solar Project Type III 24-hr 100-Year Rainfal/=6.50· Printed 3/18/2015 HydroCAD® 9.10 sin 01580 © 2010 HydroCAD Software Solutions LLC Summary for Pond 4P: Culvert I nflow Area = 4.305 ac, 0.53% Impervious, Inflow Depth = 5.45" for 100-Yearevent Inflow = 15.05 cfs @ 12.23 hrs, Volume= 1.954 af Outflow = 15.05 cfs@ 12.23 hrs, Volume= 1.954 af, Atten= 0%, Lag= 0.0 min Primary = 15.05 cfs@ 12.23 hrs, Volume= 1.954 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.05 hrs 1 2 Peak Elev= 70.50' @ 12.23 hrs Flood Elev= 72.00' Device Routing #1 Primary Invert Outlet Devices 68.75' 18.0" Round Culvert X 2.00 L= 20.0' CPP, mitered to conform to fill, Ke= 0.700 Inlet' Outlet Invert= 68.75' '68.50' S= 0.0125 'r Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=15.01 cfs @ 12.23 hrs HW=70.50' (Free Discharge) 't....1=Culvert (Inlet Controls 15.01 cfs @4.25fps) Pond 4P: Culvert Hydrograph Page 19 16 I 15.05 cfs I -Inflow 14- 12- ~ u 10- ~ ~ 8- 0 ii: 6 4- 2c 0 0 , 2 4 6 Inflow Area=4.305 ac Peak EJev=70.50' 18.0" Round Culvert x 2.00 n=0.013 L=20.0' 5=0.0125 ',. 8 10 12 14 16 18 20 22 24 26 28 30 -Primary I Time (hours) I I I I I I I I I I I I I I I I I I I I I I EMERGENCY RESPONSE PLAN Citizens Agawam Solar Project M Street, Agawam, MA In the case of an emergency, responders will access the Solar Facility from the west where there is an access road and gate at Agawam Avenue. Follow the access road until the end where the electrical equipment and disconnects are located. Responders can readily access the electrical equipment, which is located adjacent to the access road. The location of the electrical equipment will be clearly marked from the gates and the disconnect switch will be clearly labeled. The emergency response plan will be filed with local emergency responders and updated as necessary. Emergency response information may also be posted on the access gates. Contact information is included below. 24-hour Emergency Contact: Emma Kosciak Citizens Agawam Solar LLC 88 Black Falcon Avenue, Suite 342 Boston, MA 02210 Phone: (617) 951-0413 Fax: (617) 542-4487 Essential Power Massachusetts, LLC Contact: Alan Douglass, Chief EHS Officer; or Kim Marsili, Station Manager Essential Power Massachusetts, LLC 15 Agawam Avenue West Springfield, MA 01089 (413) 730-4745 I I I I I I I I I I I I I I I I Town of Agawam Police Department: In emergency dial 9-1-1 Town of Agawam Police Department 681 Springfield Street Feeding Hills, MA 01030 (413) 786-4767 Town of Agawam Fire Department: In emergency dial 9-1-1 Town of Agawam Fire Department 800 Main Street Agawam, MA 01001 (413) 786-2662 Emergency Shut Down Procedure: In an emergency situation the ON/OFF SWitch on each inverter should be manually turned to the OFF position. This will internally shut off both the AC and DC switches inside t he inverter. After the system has been turned off the DC Disconnect Switch labeled DS 1 should be turned off and a lock should be placed on it to keep it from being reenergized. Now that the system is off, follow normal shut down procedures below to turn off remaining closed switches. I I I I I I I I I I I I I I I I I I I Simple System Shutdown and Startup Procedures Any work done on solar electric system must be approved in writing by Citizens Agawam Solar LLC and performed by an authorized electrician. To work on the DC side of the solar system when the system is running properly or to reset the inverter, use the following steps to shut down and restart the system. Inverter Shutdown Use the following procedures for system shutdown. -Turn off the ON/OFF switch on the inverter -Turn the DC disconnect off -Turn the AC disconnect off -Install lockout devices on the disconnects -Turn off DC-Fused Combiner Box sWitches Inverter Start / Restart Use the following procedures for system start-up and restart: -Turn on DC-Fused Combiner Box sWitches after verifying the following: -Inverter is off -The AC and DC disconnects are off -Remove any lockout devices on AC and DC disconnects -Make sure all combiner fuses are closed -Close the AC disconnect -Close the DC disconnect After a short initialization period, the inverter will transition to "waking up" provided that the PV voltage is greater than the PV voltage start set point. After another short period (typically 5 minutes) the system will start up. The inverter cuts itself off when either AC or DC power is removed. It is best to remove both sources of power and you must do this before attempting to service the unit. SITE SAFETY PROCEDURES GENERAL WARNINGS! • The equipment contains lethal AC and DC voltages! • Site access is intended for authorized personnel only! • These servicing instructions are for use by qualified personnel only! • Equipment is supplied from multiple sources! • The inverter contains energy storage devices that require 15 minutes to safely discharge lethal voltages! DO NOT VIOLATE SITE SAFETY AND OPERATION PROCEDURES I I I I I I I I I I I I I I I I I I I The installation, adjustment, repairs or testing of the Photovoltaic System involves possible contact with potentially lethal voltages and currents. No attempt to install or service the system should be made by anyone who is not qualified, trained technician familiar with power electronic equipment. Hazardous Locations The following are deemed hazardous locations: • Inverters and Disconnects: For hazardous locations within the inverter, refer to the Inverter Operations and Maintenance Manual. • Vicinity of the Solar Electric Photovoltaic System. • Field wiring and all electrical boxes associated with the system. I I I I I I I I I I I I I I I I I I I Precautions While in the Vicinity of the Solar Electric System • Safety glasses and electrical insulating gloves must be worn when handling or working near the array, modules, electrical boxes, or wiring. • It is recommended to always have at least two persons present when working on the array or handling modules. Do not attempt to service or adjust unless another person capable of rendering first aid and cardiopulmonary resuscitation (CPR) is also present. • Any accidents should be immediately reported to a Supervisor, who should then report to Citizens Agawam Solar LLC. • The Photovoltaic Modules are made of glass and can be broken. Dropping or banging the modules may cause them to break, as may impact with sharp, hard or heavy objects. Along with electrical hazard, sharp edges or broken glass can cause injury. Be careful not to break modules and take care to properly handle and dispose of modules if they are cracked or broken. • Any crack in the module can expose the person touching it to the full voltage and current of the array. If the module is wet, touching a cracked module anywhere may expose the person to the full voltage and current of the array. Do not touch the modules when they are exposed to the sun without wearing electrical insulating gloves. Do not touch a wet, cracked module without wearing electrical insulating gloves. • A module may contain an unknown crack or connector failure at any time. Do not touch, handle or carry any wet module without wearing electrical insulating gloves.