Subject: Block Island Transmission System modification to Environmental Report, USACE File # NEA

Transcription

1 May31,2013 DianeRay,ActingChief,PermitsandEnforcementBranch MichaelElliott,PermitProjectManager U.S.ArmyCorpsofEngineers,NewEnglandDistrict 696VirginiaRoad Concord,MA Subject:BlockIslandTransmissionSystemmodificationtoEnvironmentalReport,USACEFile#NEA DearMr.Elliott,andMs.Ray: In response to feedback received from residents in the Town of Narragansett, Deepwater Wind Block Island Transmission,LLC(DWBIT),hasagreedtomodifythe0.8mi(1.3km)segmentoftheBlockIslandTransmission System(BITS)fromtheNarragansettTownBeachtotheproposedNarragansettSwitchyardfromanoverhead line to a buried line. In addition, based on discussion with staff of the Rhode Island Coastal Resources Management Council (CRMC), DWBIT has modified the previously proposed design of the Narragansett SwitchyardtofurtherminimizelanduseimpactswithinbufferstoNarrowRiverSpecialAreaManagementPlan (NarrowRiverSAMP)wetlands. Theseproposedchangesresultinthefollowingbenefits: The existing utility poles along the previously proposed overhead line route no longer require enhancement; A reduction of 0.5 ac (0.2 ha) of temporary disturbance during construction of the Narragansett Switchyard;and Areductionof1.93ac(0.8ha)intheoperationalfootprintforallBITSfacilitiesinNarragansett. With this letter, DWBIT modifies the contents of the Block Island Wind Farm (BIWF)/BITS Environmental Report/ConstructionandOperationsPlandatedSeptember2012(ER/COP)toreflecttheabovechangestothe BITSfacilitiesinNarragansettRhodeIsland. Definedtermsusedinthiscorrespondencethatarenotdefinedherein,havethemeansascribedtotheminthe BlockIslandWindFarm(BIWF)andBlockIslandTransmissionSystem(BITS)EnvironmentalReport/Construction andoperationsplan(er/cop)whichwassubmittedtoyourofficeinseptember EXCHANGE TERRACE, SUITE 101, PROVIDENCE, RI PHONE: FAX:

2 SUMMARYOFBITSNARRAGANSETTFACILITYMODIFICATIONS BITSCableModification OverheadtoBuried AsdescribedinSection3.1.2oftheER/COP,theBITSwillmakelandfallatamanholelocatedwithintheparking lot of Narragansett Town Beach. As originally proposed, the BITS would have transitioned to overhead at an existingnarragansettelectriccompanyd/b/anationalgrid s(nec)riserpoleinthetownbeachparkinglotand wouldhaveprimarilyfollowedtheexistingnecoverheaddistributionsystemforapproximately0.8mi(1.3km) along Beach Street to Narragansett Avenue/Kingstown Road to its interconnection point at the proposed Narragansett Switchyard, located adjacent to the Narragansett DPW facility off of Mumford Road.With this letter,dwbitrevisestheproposedactionincludedintheer/coptoaburiedcablealongthissameroutefrom thetownbeachparkinglottotheproposednarragansettswitchyard(seerevisedfigure3.12oftheer/copin Attachment1). The construction and operation activities associated with the modified buried portion of the BITS in NarragansettwillbeasdescribedinSection oftheER/COPforthe0.3mi(0.5km)buriedportionofthe BITSroutebetweentheNarragansettSwitchyardtoitsinterconnectionwiththeNECFeeder3302.DWBITwill constructonshorefacilitiesduringfall,winterorspringtoavoidimpactstothesummertouristseasonwhichwill mitigate construction phase visual and transportation impacts on seasonal residents and recreational and tourist/vacationers.revisedengineeringdesignplansforthebitsinnarragansettareprovidedasattachment2 tothisletter. As described in the ER/COP, the buried portions of the Project terrestrial cables will be installed within in a concreteencasedduct bank.in Narragansett,theinstallationoftheburied portionofthebitswillrequirea trench approximately 3 ft (0.9 m) wide and 7 ft (2.1 m) deep from the Town Beach to the Narragansett Switchyardandapproximately4ft(1.2m)wideand7ft(2.1m)deepfromtheNarragansettSwitchyardtothe interconnectionthenecfeeder3301.asstatedinsection oftheer/cop,asawwillbeusedtocutalong lines that mark the width of the cable trench to be excavated for the duct bank. Following saw cutting, the existingpavementwillberemovedbypneumatichammersandtheunderlyingsoilbedwillbeexcavatedtoa depthofapproximately7ft(2.1m).insomeareas,theexcavationwillbedonebyhandandmayexceed7ft(2.1 m)deeptoavoiddisturbingexistingutilitylines,serviceconnections,andstreamculverts.thetrenchwillbe sheeted and shored during construction as required by soil conditions and Occupational Safety and Health Administration(OSHA)safetyrulestopermittraffictraveladjacenttothetrenchandtoallowforthetrenchto becoveredwithasteelplatetopermittrafficoverthetrenchduringnonworkinghours.excavatedsoilsmaybe temporarilystockpiledadjacenttothetrenchwithintheapprovedworkspaceortheproposedprojectworkarea locatedatthenarragansetttownbeachparkinglot(seerevisedfigure3.12oftheer/copinattachment1)to beusedasbackfillordisposedofappropriately.pavementwillbedisposedofseparatelytoallowrecyclingatan asphaltbatchingplant. GroundwatermanagementduringconstructionoftheburiedBITScableinNarragansettwilllikelyberequired. AsstatedinSection oftheER,DWBITwillconductapreconstructionassessmentofthedepthofthe watertableandtidalinfluencealongtheterrestrialrouteoftheprojecttodeterminetheextentofgroundwater 2

3 managementrequired.ifsiteconditionsindicatedthatonlyasmallquantityofwaterwilllikelyenterthetrench, thiswaterwillbepumpedoutoftheworkareathroughfilterbagsorahaybalecorraleitherintocatchbasins or,wherecatchbasinsarenotavailable,offtheroad.ifsiteconditionsindicateasignificantquantityofwater will likely enter the trench, a more permanent area (e.g., a catch basin), with the capacity to accept the infiltrationofthewater,willbedesignatedforwaterremoval.underthiscircumstance,hoseswilllikelybeused topumpthegroundwaterfromthetrenchthroughfilterbagsorhaybalestothedesignatedarea..regardless ofthemethodemployed,dwbitwillincorporateanappropriateleveloferosionandsedimentationcontroland beperformedinaccordancewithregulatoryerosionanddischargerequirements. Onceaportionofatrenchisexcavated,theconduitwillbeassembledandloweredintothetrench.Thearea aroundtheconduitwillbefilledwithahighstrengththermalconcrete.aftertheconcreteisinstalled,thetrench willbebackfilledandthesiterestoredtopreconstructionconditions.sheetc1.5andc1.6ofattachment2to this Letter, show typical drawings of the proposed terrestrial cable trench configuration along the revised underground portion of the BITS from the Town Beach Parking Lot to the Narragansett Switchyard. The undergroundcablewillbeinstalledfollowingtheinstallationoftheductbankandmanholes.theconduitwillbe testedandcleaned priortoinstallationofthe cableby pullingaswabmandrelthrougheachof theducts to ensuretheyareclearofdebris.thecablewillbeinstalledbypullingfromonemanholetoanotherandwillbe splicedintheconnectedmanholesafterinstallation. ConstructionofthemodifiedburiedportionoftheBITSfromtheTownBeachParkingLottotheNarragansett Switchyardwillalsoresultinthecrossingoftwoperennialculvetedstreams CrookedBrookandSpragueBrook (seerevisedfigure4.104oftheer/copinattachment3).atthetwoproposedstreamcrossings,dwbitswill excavateandinstalltheductbankwithintheexistingroadrightsofwayundertheexistingculverts.sheetc1.6 ofattachment2depictstheproposedcrossingsofcrookedbrookandspraguebrook. The following table provides a summary of the amended construction and operations footprint for the BITS facilitiesinnarragansett.thistableisanexcerptfromtable3.25oftheer/cop.foreaseofreviewthistable onlyincludestheprojectfootprintinformationrelevanttotheonshorebitsfacilitiesinnarragansett. As stated in the ER/COP, it is assumed that the BITS will be kept in operation in perpetuity. Throughout operationsthebitscablewillbemaintainedconsistentwithnecstandards.theburiedportionsofthebitson Narragansettwillhavenoregularmaintenanceneedsbeyondperiodicinspectionsofthesystemunlessafault orfailureoccurs. 3

4 BITS Cable Construction and Operation Footprint BITS Facilities Construction Operation Onshore Short-Distance HDD Beach Work Area 0.78 ac / 0.31 ha -- Short and Long-Distance HDD Work Area (Narragansett Town Beach Parking Lot) 0.45 ac / 0.18 ha -- Jet-Plow Trench a/ 0.02 ac / 0.01 ha -- Underground Cable b/ 3.4 ac / 1.3 ha -- Overhead Cable c/ 0.1 ac / 0.04 ha -- Temporary Laydown Area 0.25 ac / 0.1 ha -- Narragansett Switchyard 0.4 ac / 0.2 ha 0.3 ac / 0.1 ha Total Short-Distance HDD 5.4 ac / 2.14 ha 0.3 ac / 0.1 ha Total Long-Distance HDD 4.62 ac / 1.83 ha 0.3 ac / 0.1 ha a/ Only applicable to the short-distance HDD Alternative and includes maximum 10 ft by 70 ft (3.1m by 21.3m) trench area to launch jet plow from the beach b/ Includes the 40 ft (12.2 m) construction right-of-way. Vegetation will not need to be managed during operation. c/ Includes the 30 ft (9.1 m) construction right-of-way. Interconnection within existing NEC right-of-way vegetation will not need to be managed during operation. NarragansettSwitchyardModification Inresponse tocomments receivedduringa meetingwithcrmc staffonapril9,2013,dwbithasmadethe followingmodificationstothedesignofthenarragansettswitchyard: Minimizedearthdisturbanceandpermanentfillreplacementtothemaximumextentpossible Prioritizedthelocationofearthdisturbancesasfaraspossiblefrombiologicalwetlands Minimizedimpactstotheextentpossiblewithinthe50ft(15.2m)perimeterwetlandbufferzone(s) Designedamaximumgradeof30percentforallfillslopes ThesedesignchangesareincludedintherevisedBITSengineeringdesignplansincludedasAttachment2.The amendedconstructionandoperationalfootprintofthenarragansettswitchyardisincludedinthetableabove. SUMMARYENVIRONMENTALAFFECTSANDPROPOSEDMITIGATIONMEASURES Section4.0oftheER/COPcontainsadetailedenvironmentalanalysisoftheexistingconditionswithintheBIWF andbitsprojectareaaswellasanevaluationofpotentialimpactsandproposedmitigationmeasures.asno change has been made to the location of the BITS cable route alignment or the Narragansett Switchyard location, the analyses of the affected environment associated the BITS Project Area remains as described in Section4.0ofthe ER/COP.Thefollowing tablesummarizes those changestotheenvironmentalimpactsand mitigationmeasurespresentedintheer/copasaresultofproposedmodifications. 4

5 ER/COP BITS Affects Section Resource(s) Physical Oceanography and Meteorology Local Geology; Geologic Hazards Marine Waters; Groundwater; Surface Water Summary of Change N/A Air Quality No Change Benthic and Shellfish Resources Finfish Resources Essential Fish Habitat Maine Mammals and Sea Turtles Terrestrial Habitat and Wildlife Avian and Bat Species Threatened and Endangered Species The BITS cable and Narragansett Switchyard modification have been designed to meet the local geologic conditions of the Project Area in Narragansett Rhode, Island. Installation of the modified BITS facilities in Narragansett will result in a maximum total of 5.4 ac (2.14 ha) in temporary impacts on previously disturbed soils and/or existing road rights-of-way. This represents a maximum 1.5 ac (0.65 ha) decrease in the temporary disturbance estimated in the ER/COP. The operational footprint of the BITS facilities in Narragansett will decrease as a result of the proposed Project modifications resulting in a maximum of only 0.3 ac (0.1 ha) of permanent disturbance vs. the 2.23 ac (0.9 ha) of permanent impact originally estimated in the ER/COP. Marine Waters - The proposed BITS modifications will result in no impacts on marine waters. Groundwater - Groundwater management during construction of the underground portions of the BITS cable in Narragansett will likely be required. DWBIT will conduct a pre-construction assessment of both the soil conditions and elevation of the water table along the entirety of the underground BITS cable route. DWBIT will submit a dewatering plan in accordance to regulatory erosion control and discharge requirements to agencies for review and approval prior to construction. Surface Water DWBIT will require a Special Exception from the CRMC for the crossing of two culverted streams (Crooked Brook and Sprague Brook) located along the modified buried portion of the BITS. DWBIT will employ the same stormwater pollution prevention plan, best management practices and erosion control measures to support the construction of the modified BITS facilities in Narragansett as committed to in the ER/COP. See Appendix I of the ER/COP for the Draft Stormwater Prevention Plan. N/A N/A N/A N/A All BITS construction activities along the modified buried portion of the BITS cable route are proposed to take place within existing road rights-of-way or previously disturbed lands and will result in no impacts to natural vegetation along the route. Unlike overhead transmission lines, during operations the underground portions of the BITS will not require vegetation clearing; reducing operational impact of the BITS facilities by 1.93 ac (0.8 ha) from what was originally estimated in the ER/COP. At the Narragansett Switchyard, DWBIT proposed modifications have been specifically designed to: minimize earth disturbances and the placement of permanent fill; to maximize the distance of earth disturbing activities from biological wetlands; and reduce impacts within the 50-ft (15.2 m) perimeter wetland buffer zone to the maximum extent possible. These modifications were conducted in coordination with the CRMC and effectively reduce impacts to the surrounding wildlife habitat of the Narrow River SAMP area. Sub-grade installation conforms with "avian safe" and "raptor safe" construction methods outlined by the Avian Power Line Interaction Committee (2006). No change 5

6 ER/COP BITS Affects Section Resource(s) In-Air Acoustic Environment Underwater Acoustic Environment Marine Cultural Resources Terrestrial Archaeological Resources Aboveground Historic Resources Visual Resources Summary of Change No change. N/A N/A Marine Uses N/A Land Use Transportation and Navigation Socioeconomics N/A Public Health and Safety No terrestrial archeological sites have been identified along the portions of the BITS Project Area in Narragansett that have been surveyed to date. Additional surveys must be completed at the proposed HDD Work Area at Narragansett Town Beach and along both the new and previously proposed buried portions of the BITS. DWBIT has committed to conducting these surveys pre-construction. The Above-ground Historic Properties Identification, National Register Eligibility Evaluation and Preliminary Effects Assessment and BIWF and BITS Above-ground Historic Properties Section 106 Visual Effects Assessment (Visual Effects Assessment) submitted as supplemental filings to the ER/COP in January 2013 identified 4 historic districts and 2 individual historic properties within the BITS Terrestrial Components APE in Narragansett. Burial of the BITS cable from the Narragansett Town Beach parking lot to the Narragansett Switchyard will effectively eliminate views of the project facilities from all of the identified sites with the exception of the Narragansett Pier Historic District which will still have some partial views of the Narragansett Switchyard, however, based the PAL Visual Effects Assessment these partial view would result in an adverse effect. A final determination of effect from the USACE and Rhode Island Historical Preservation and Heritage Commission (RIHPHC) is pending. Burial of the BITS cable from the Narragansett Town Beach parking lot to the Narragansett Switchyard would effectively eliminate views of the project facilities along this portion of the route. Modifications to the Narragansett Switchyard will not modify the views of the facility from what was previously described in the BITS Visual Impact Assessment, submitted as a supplemental filing to the ER in January As stated in this report, the Switchyard has been designed to be architecturally consistent with the existing character of the surrounding environment in order to minimize any visual effects of the facility on the surrounding environment. Installation of the modified BITS facilities in Narragansett will not result in impacts to biological wetlands. Construction activities will however result in a maximum total of 0.6 ac (0.2 ha), 1.5 ac (0.6 ha), and 3.3 ac (1.3 ha) of temporary impacts within CRMC regulated perimeter wetland buffers; 150-ft coastal and freshwater wetland set-backs, and 200-ft coastal features buffer, respectively. Operation impacts of the modified BITS facilities for the above-mention CRMC regulated features will only result in 0.2 ac (0.1 ha), 0.5 ac (0.2 ha), and 0.7 ac (0.3 ha), respectively, Installation of the buried portion of the BITS cable from the Narragansett Town Beach to the Narragansett Switchyard will likely result in some additional temporary disruption to normal traffic during the construction period. DWBIT has committed to conducting construction activities outside the summer tourist season to minimize disruption. As stated in the ER/COP, DWBIT will also work with local town officials and the Rhode Island Department of Transportation to communicate construction plans and prepare appropriate public notices. N/A 6

7 Deepwater Wind is committed to supporting the expedited review of the BIWF and BITS.If you have any Sincerely, AileenKenney VicePresidentofPermittingandEnvironmentalAffairs cc JessicaBradley,BOEM JohnBrown,NarragansettIndianTribalHistoricPreservationOffice ThomasChapman,USFWS GroverFugate,CRMC RonGagnon,RIDEM DanGoulet,CRMC RickGreenwood,RIHPHC DougHarris,NarragansettIndianTribalHistoricPreservationOffice EdwardSanderson,RIHPHC MariaTur,USFWS SusivonOettingen,USFWS BettinaWashington,WampanoagTribeofGayHead(Aquinnah) Attachments Attachment1RevisedFigure3.12oftheER/COP Attachment2RevisedBITSNarragansettEngineeringDesignPlans Attachment3RevisedFigure4.104oftheER/COP 7

8 Attachment1 RevisedFigure3.12oftheER/COP 8

9 HILLSIDE RD SUMMIT ARR DR BOON NECK RD HOLLAND DR CRE ARR DR W BOON NECK RD DUNES CT RIVER HEIGHTS DR WOOD SOUTH TRL BOON NECK RD KIMBERLY DR WOOD BOON NECK RD HIGHLAND PLEASANT HOMELAND INEZ MUMFORD RD INEZ INEZ LAKEWOOD DR THERESE HIGHLAND HOMELAND KINGOWN RD MUMFORD RD SCHOOLHOUSE RD HIGHLAND MUMFORD RD RIVERSIDE DR KINGOWN RD PROSPECT KINGOWN RD NARRAGANSETT KINGOWN RD RATHMORE RD NARRAGANSETT MANSION RATHMORE RD ATLANTIC RATHMORE RD NARRAGANSETT ROBINSON RATHMORE RD WANDA CANONCHET WY OTHMAR SYDNEY LN CANONCHET WY NARRAGANSETT BROWN CASWELL CASWELL TA LIA CT WANDA OCEANSIDE PL NARRAGANSETT CANONCHET WY NARRAGANSETT OCEANSIDE PL ANNE HOXSIE LN NARRAGANSETT BEACH BEACH BEACH BEACH BEACH BEACH BEACH BEACH JESSICA LN THAYER AV S PIER RD MARINER DR MARINER DR S PIER RD RODMAN CENTRAL WATSON KINGOWN RD RODMAN 5TH WATSON CENTRAL 5TH 5TH RODMAN ROBINSON ROBINSON KINGOWN RD DEBORAH ROBINSON CENTRAL RODMAN ROCKLAND KINGOWN RD ROCKLAND CENTRAL CASWELL ROCKLAND CASWELL CASWELL CASWELL CASWELL CASWELL CT RODMAN CONTINENTAL KINGOWN RD CENTRAL GIBSON BOON BOON BOON PIER MARKET PL COURTWAY CENTRAL RODMAN MATHEWSON MASSASOIT CT MATHEWSON MATHEWSON MATHEWSON EXCHANGE PL TAYLOR CENTRAL RODMAN BLOSSOM WAY S PIER RD FRANK LOW S PIER RD CONGDON CASWELL S PIER RD DOUGLAS DR SUMMER S PIER RD CONGDON GIBSON GIBSON GIBSON CONGDON PERKINS ROSE CT CONGDON CONTINENTAL RD NARRAGANSETT CT CONGDON GIBSON S PIER RD PROSPECT CT S PIER RD S PIER RD Interconnection Point with TNEC 3302 Feeder Line BITS Alternative 1 Proposed Buried Route Narragansett Switchyard HDD Work Area HDD Beach Work Area Cofferdam Area Survey Corridor (300m) TNEC 3302 Feeder Line Data Sources: ESRI World Imagery (May 2010) Deepwater Wind Block Island Wind Farm and Block Island Transmission System Environmental Report Revised Figure BITS Mainland Route (Alt 1) May ,050 1,400 Feet Meters File: P:\Deepwater\Working\Deepwater RI GIS\GIS \ _DraftReport\GIS\Spatial\MXD\EnvironmentalReport \ _FinalReport\ _Updates\ _Revised\ \Fig3_1_2_BITSMainland_Alt1.mxd Prepared By: william.scales Coordinate System: NAD 1983 StatePlane Rhode Island FIPS 3800 Feet

10 Attachment2 RevisedBITSNarragansettEngineeringDesignPlans 9

11 05/30/2013 Cover Sheet Deepwater Wind, LLC Prepared For DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Assessor's Map C Lots 461-A, 464, 465, &466 (Beach Parking Lot), Boston Neck Road, Narragansett Avenue, (Map B Lot 5, Lot 1-A & Map B-2 Lot 3), Mumford Road & William C. O'Neill Bike Path (Map B-2 Lot 6) Sheet Index Cover Sheet Existing Conditions Plan-1 C Existing Conditions Plan-2 Existing Conditions Plan-3 Existing Conditions Plan-4 Existing Conditions Plan-5 C1.0. C1.1. C1.2. C1.3. C1.4. C1.5. C1.6. Cable Route Site Plan-1 Cable Route Site Plan-2 Cable Route Site Plan-3 Cable Route Site Plan-4 Cable Route Site Plan-5 Cable Route Detail Sheet Cable Route Cross Section Details C0 OF 17 Narragansett, Rhode Island Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI Switchyard C2.0 C2.1. C2.2. C2.3. Switchyard Site Layout Switchyard Grading & Utility Switchyard Detail Sheet-1 Switchyard Detail Sheet-2

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17 Boston Neck Road Boston Neck Road 05/30/2013 (Variable Width Right of Way) Beach Pond RI State Plane (NAD 83) Cable Route Site Plan-1 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. C1.0 OF 17 See Below Abbreviations: Scale: 1"=50' 0 25' 50' 100' Scale: 1"=40' 0 20' 40' 80' General Notes: Traffic Notes: Plan References: RI State Plane (NAD 83) Narragansett Avenue (Variable Width Right of Way) Boston Neck Road (Variable Width Right of Way) (Variable Width Right of Way) See Sheet C1.1 See Above

18 05/30/2013 See Sheet C1.0 Scale: 1"=40' 0 20' 40' 80' (Variable Width Right of Way) (Route 1A) Narragansett Avenue Caswell Stret WELL REET Robinson Street WANDA REET (Variable Width Right of Way) C1.1 RI State Plane (NAD 83) Cable Route Site Plan-2 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. OF 17 (Route 1A) Narragansett Avenue (Variable Width Right of Way) See Sheet C1.2

19 05/30/2013 Scale: 1"=40' 0 20' 40' 80' Atlantic Avenue RI State Plane (NAD 83) Cable Route Site Plan-3 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Mansion Avenue (Variable Width Right of Way) Strathmore Street (Route 1A) Kingstown Road (Variable Width Right of Way) Sprague Park Access Road (Variable Width Right of Way) C1.2 OF 17 See Sheet C1.1 See Sheet C1.3 d ay)

20 05/30/2013 See Sheet C1.2 Sprague Park Access Road (Variable Width Right of Way) RI State Plane (NAD 83) Cable Route Site Plan-4 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Sprague Pond Scale: 1"=40' 0 20' 40' 80' C1.3 OF 17 See Sheet C1.4 (ROUTE 1A) KINGOWN ROAD MUMFORD ROAD HIGHLAND NUE MUMFORD ROAD

21 05/30/2013 See Sheet C1.3 RI State Plane (NAD 83) Cable Route Site Plan-5 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Schoolhouse Road Riverside Drive William C. O'Neil Bike Path Scale: 1"=40' 0 20' 40' 80' C1.4 OF 17

22 05/30/2013 Cable Route Detail Sheet Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. C1.5 OF 17

23 05/30/2013 Cable Route Cross Section Details Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. C1.6 OF 17

24 05/30/2013 Bioretention A Bioretention B General Notes: Soil Information: Dimensional Regulations: Scale: 1"=20' 0 10' 20' 40' OF 17 North Switchyard Site Layout Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Site Site Proposed Legend: Plan References: C2.0

25 05/30/2013 North Switchyard Grading & Utility Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Scale: 1"=20' 0 10' 20' 40' Grading and Utility Notes: Plan References: Proposed Legend: C2.1 OF 17

26 05/30/2013 Switchyard Detail Sheet-1 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. C2.2 OF 17

27 05/30/2013 Switchyard Detail Sheet-2 Deepwater Wind, LLC Narragansett, Rhode Island Prepared For Deepwater Wind 56 Exchange Terrace, Suite 101 Providence, RI DE Job No: Copyright 2013 by DiPrete Engineering Associates, Inc. Scale: 1"=10' 0 5' 10' 20' Legend: C2.3 OF 17

28 Attachment3 RevisedFigure4.104oftheER/COP 10

29 BOON NECK RD HILLSIDE RD ARR DR CALE RD BOON NECK RD SEA VIEW HILLSIDE RD ARR DR SUMMIT HOLLAND DR CRE ARR DR W BOON NECK RD DUNES CT RIVER HEIGHTS DR KIMBERLY DR RIVERSIDE DR Crooked Brook WOOD SOUTH TRL WOOD BEACH BOON NECK RD BOON NECK RD HIGHLAND PLEASANT HOMELAND KINGOWN RD MUMFORD RD INEZ THERESE MUMFORD RD HIGHLAND HOMELAND KINGOWN RD SCHOOLHOUSE RD MUMFORD RD KINGOWN RD Sprague Brook RATHMORE RD RATHMORE RD RATHMORE RD OTHMAR WANDA SYDNEY LN CANONCHET WY CASWELL TALIA CT ANNE HOXSIE LN Little Neck Pond BEACH BEACH BEACH BEACH INEZ S PIER RD JESSICA LN LAKEWOOD DR THAYER AV THAYER AV Sprague Pond MARINER DR MARINER DR PROSPECT KINGOWN RD Crooked Brook RODMAN KINGOWN RD WATSON NARRAGANSETT MANSION KINGOWN RD CENTRAL 5TH WATSON 5TH ATLANTIC ROBINSON 5TH ROBINSON DEBORAH ROBINSON ROBINSON KINGOWN RD CENTRAL ROCKLAND NARRAGANSETT ROCKLAND BROWN CENTRAL CASWELL ROCKLAND CASWELL CASWELL CASWELL CASWELL RODMAN KINGOWN RD CENTRAL GIBSON NARRAGANSETT OCEANSIDE PL PIER MARKET PL BOON BOON COURTWAY CENTRAL RODMAN MATHEWSON MATHEWSON BEACH EXCHANGE PL OCEAN RD TAYLOR CENTRAL RODMAN S PIER RD BLOSSOM WAY S PIER RD CONGDON FRANK LOW CASWELL CONGDON CONTINENTAL CONGDON ROSE CT CONTINENTAL RD NARRAGANSETT CT CONGDON Interconnection Point with TNEC 3302 Feeder Line BITS Alternative 1 Proposed Buried Route Narragansett Switchyard HDD Working Area HDD Beach Work Area TNEC 3302 Feeder Line Data Sources: ESRI World Imagery (May 2010) RIGIS RICRMP Classifications Moderately Developed Barrier Type 1 Conservation Area Type 4 Multipurpose Water Deepwater Wind Block Island Wind Farm and Block Island Transmission System Environmental Report Revised Figure BITS Mainland Route (Alt 1) CRMC May ,200 Feet Meters File: P:\Deepwater\Working\Deepwater RI GIS\GIS \ _DraftReport\GIS\Spatial\MXD\EnvironmentalReport \ _FinalReport\ _Revised\\Fig4_10_5_BITSMainland_Alt1_CRMC.mxd Drawn by: william.scales Coordinate System: NAD 1983 StatePlane Rhode Island FIPS 3800 Feet