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Home My WebLink AboutAPA1208donly,theyarenotCommentsarenotSincerely,;.2~~'ResidentManagerJanuary8,1982P5700.11.70T6543.AquaticHabitatInvestigationsThesereportsareprovidedforyourinformationpartofourformalAgencyCoordinationProgram.requestedbutwillcertainlybeaccepted.Mr.CarlYanagawaRegionalSupervisorforHabitatDivisionAlaskaDepartmentofFish&Game333RaspberryRoadAnchorage,Alaska99502DearMr.Yanagawa:IamenclosingforyourreviewthefollowingreportspreparedbytheAlaskaDepartmentofFishandGamefortheSusitnaHydroelectricProject:1.FinalDraftReport,AdultAnadramousFisheriesProject2.ResidentandJuvenileAnadramousFishInvestigationsontheLowerSusitnaRiverACRESAMERICANINCORPORATEDJDG/jaEncl:asTel"oo,'oe>(907)276>4886Telex025450(ACRESAHG)OtherOfficesBuffalo,NY:Columbia,MD:Pittsburgh,PA:VVashington,DCConsultingEngineersSuite3051577CStreetAnchorage,Alaska98501 I1<-{115,S'1?A-1.3ALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTTASK2 -SURVEYSANDSITEFACILITIESSUBTASK2.10ACCESSPLANNINGSTUDYPRELIMINARY2NDPRINTINGOCTOBER1981PREPAREDFOR:ACRESAMERICANINCORPORATEDPREPAREDBY:R&MCONSULTANTS,INC.ARLISAlukaResourcesLibrary&InformattonServicesAnchorage,Alaska ALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTACCESSPLANNINGSTUDYTABLEOFCONTENTSLISTOFTABLESLISTOFFIGURES1 -INTRODUCTION1.1TheStudyArea1.2StudyDescription1.3ObjectivesandScopeofStudy1.4PlanFormulationandSelectionProcess1.5OrganizationofReport2 -SUMMARY2.1ScopeofWork2.2PreviousStudies2.3ProjectDesign2.4ProjectSchedule2.5LogisticsRequirements2.6ProjectParameters2.7AlternativeSegments2.8AlternativeAccessPlans3 -SCOPEOFWORK3.1CorridorSelection3.2ModalSplitAnalysis3.3AccessPlanDevelopmentARLISAlaskaResourcesLibrary&.InformatH.lnServicesAnchoritge.AlallkacoI"-~(0~oooLOLOI"-MM4 -PREVIOUSSTUDIES4.1U.S.ArmyCorpsofEngineers-1975and19794.2Others 5 -PROJECTDESIGN5.1TheDamsandRelatedFacilities5.2TheConstructionCamps5.3ThePermanentVillage5.4AirStrip5.5ProjectAccess6 -PROJECTSCHEDULE6.1PowerDemandGrowth6.2GeneratingFacilitySchedule6.3AccessFacilityScheduleConstraints7 -LOGISTICSREQUIREMENTS7.1ConstructionEquipment,MaterialsandSupplies7.2SupportRequirements7.3PermanentVillage7.4SummaryofFreightMovements7.5PersonnelMovements8 -ACCESSROUTEDESIGNPARAMETERS8.1RoadwayParameters8.2RailroadParameters9 -CORRIDORSELECTION9.1Methodology9.2DiscussionofAlternativeSegmentsA.DescriptionB.LineandGradeC.DrainageFeaturesD.BridgesE.SoilsF.Environmental H.SegmentSuitability9.3CorridorSummary10-ACCESSPLANS10.1SupplySourcesandShippingOptions10.2AlaskaPorts10.3ModalOptions10.4AccessPlansA.PortsB.ModalSplitC.SegmentsIncludedD.CostEstimatesE.Advantages/Disadvantages11-CONCLUSIONSANDRECOMMENDATIONS12-APPENDICESA.PreliminaryDesignDevelopmentB.ProposedAlternativeSegmentsC.AlternativeComparison-Grade,CurvatureandDistanceD.TerrainUnitMappingE.EnvironmentalConcernsF.CostEstimates LISTOFTABLESTable2.12.22.32.42.57.17.27.37.47.57.68.18.28.310.110.210.310.410.5MajorQuantitiesintheDamsAverageWeeklyFreightMovementsApprovedRoadwayDesignParametersApprovedRailroadDesignParametersLinehaulRatesinDollars/Ton-mileMajorQuantitiesintheDamsConstructionFleetRequiredDieselFuelRequirementsforConstructionRequiredDieselFuelFlowRatesRequiredMaterialFlowRatesSummaryofRequiredAverageMaterialFlowRatesOriginalProposedDesignCriteriaApprovedRoadwayDesignParametersApprovedRailroadDesignParametersMilleagefromPortstoRailheadorProjectAcrosstheDockHandlingCostsLinehaulRatesinDollar/Ton-MileMaintenanceFactorsBasicCorridorSegments2-22-32-42-42-77-27-37-47-47-57-78-28-48-410-610-710-810-910-9C.lSummaryofAlignmentParametersC.2CombinationofAligmentParametersF.2.1AcrosstheDockHandlingCostsF.2.2LinehaulRatesinDollars/TonMileF.4.1RailheadCostEstimateF.7.1CulvertsC-1C-2F-2F-2F-8F-34 TablePageF.8.1AccessConstructionEstimates-SegmentA-1F-37F.8.2AccessConstructionEstimates-SegmentA-2F-38F.8.3AccessConstructionEstimates-Corridor1F-39F.8.4AccessConstructionEstimates-SegmentB-1F-40F.8.5AccessConstructionEstimates-SegmentB-2F-41F.8.SAccessConstructionEstimates-SegmentB-3F-42F.8.7AccessConstructionEstimates-Corridor2F-43F.8.8AccessConstructionEstimates-Corridor3F-44F.8.9AccessConstructionEstimates-SegmentR-1F-45F.8.10AccessConstructionEstimates-SegmentR-2F-46F.8.11AccessConstructionEstimates-SegmentRailroadF-47F.8.12AccessD&CCosts-Corridor1F-48F.8.13AccessD&CCosts-Corridor2F-49F.8.14AccessD&CCosts-Corridor3F-50F.8.15AccessD&CCosts-RailroadF-51F.9.1MaintenanceCostsF-52F.10.1WatanaLogisticBreakdownF-54F.10.2DevilCanyonLogisticBreakdownF-55F.10.3RoadhaulSegmentCostsF-5SF.10.4LogisticsTotalF-57 LISTOFFIGURESFigurePage1.1LocationMap1-91.2AccessStudyLogicDiagram1-102.1ProjectAccessLocationAlternatives2-58.1TypicalRoadCrossSection8-38.2TypicalRailroadCrossSection8-59.1SusitnaAccessCorridor-SegmentslA,AB9-89.2SusitnaAccessCorridor-SegmentslC,lD,1E,lF9-169.3SusitnaAccessCorridor-Segments2A,2B9-219.4SusitnaAccessCorridor-Segments2C,2D,2E9-279.5SusitnaAccessCorridor-Segments2F,2G,2H9-329.6SusitnaAccessCorridor-Segments21,2J,JK9-389.7SusitnaAccessCorridor-Segments2L9-419.8SusitnaAccessCorridor-Segments2R9-449.9SusitnaAccessCorridor-Segments2RR9-469.10SusitnaAccessCorridor-Segments3A,3B,3C9-529.11ProjectAccessLocationAlternatives9-559.12SusitnaAccessCorridorBorrowAreas9-5610.1AccessPlan#110-1210.2AccessPlan#210-1510.3AccessPlan#310-1810.4AccessPlan#410-2110.5AccessPlan#510-2410.6AccessPlan#610-2610.7AccessPlan#710-3010.8AccessPlan#810-33 FigurePageA.1WatanaDamPlanA-5A.2DevilCanyonDamPlanA-6A.3PreliminaryWatanaScheduleA-7A.4PreliminaryDevilCanyonScheduleA-8B.OAccessCorridors-IndexMapB-2B.1AccessCorridorsAlignmentsB-3B.2AccessCorridors-AlignmentsB-4B.3AccessCorridors-AlignmentsB-5B.4AccessCorridors-AlignmentsB-6B.6AccessCorridors-AlignmentsB-7B.7AccessCorridors-AlignmentsB-8B.8AccessCorridors-AlignmentsB-9B.9AccessCorridors-AlignmentsB-10B.14AccessCorridors-AlignmentsB-11B.15AccessCorridors-AlignmentsB-128.16AccessCorridors-AlignmentsB-138.17AccessCorridors-AlignmentsB-148.18AccessCorridors-AlignmentsB-158.19AccessCorridors-Alignments8-168.20AccessCorridors-AlignmentsB-17B.21AccessCorridors-Alignments8-18D.OTerrainUnitPropertiesandEngineeringInterpretationD-2D.1AccessCorridorsTerrainUnitMapsD-3D.2AccessCorridors-TerrainUnitMapsD-4D.3AccessCorridors-TerrainUnitMapsD-5D.4AccessCorridors-TerrainUnitMapsD-6D.6AccessCorridors-TerrainUnitMapsD-70.7AccessCorridors-TerrainUnitMapsD-8D.8AccessCorridors-TerrainUnitMapsD-9D.9AccessCorridors-TerrainUnitMapsD-10 0.14AccessCorridors-TerrainUnitMaps0-110.15AccessCorridors-TerrainUnitMaps0-120.16AccessCorridors-TerrainUnitMaps0-130.17AccessCorridors-TerrainUnitMaps0-140.18AccessCorridors-TerrainUnitMaps0-150.19AccessCorridors-TerrainUnitMaps0-160.20AccessCorridors-TerrainUnitMaps0-170.21AccessCorridors-TerrainUnitMaps0-18E.1.1AccessCorridors-IndexMapE-2E.1.2AccessCorridors-EnvironmentalConflictsE-3E.1.3AccessCorridors-EnvironmentalConflictsE-4E.1.4AccessCorridors-EnvironmentalConflictsE-5E.1.5AccessCorridors-EnvironmentalConflictsE-6E.1.6AccessCorridors-EnvironmentalConflictsE-7E.1.7AccessCorridors-EnvironmentalConflictsE-8E.1.8AccessCorridors-EnvironmentalConflictsE-9E.1.9AccessCorridors-EnvironmentalConflictsE-10E.1.10AccessCorridors-EnvironmentalConflictsE-11E.1.11AccessCorridors-EnvironmentalConflictsE-12E.1.12AccessCorridors-EnvironmentalConflictsE-13E.1.13AccessCorridors-EnvironmentalConflictsE-14E.1.14AccessCorridors-EnvironmentalConflictsE-15F.4.1TypicalPlan-RailtoTruckTransferFacilityF-41".5.1IndianRiverBridgeF-11F.5.2SusitnaRiverBridgeF-12F.5.31160'BridgeSouthofDevilCanyonF-13F.5.4FogCreekBridgeF-14F.5.51000'BridgeSoutheastofOevilCanyonF-15F.5.6SusitnaRiverBridgeatDevilCanyonF-16 FigurePageF.6.1TypicalRoadSection-0-10%cross-slopeF-18F.6.2TypicalRoadSection-15%cross-slopeF-19F.6.3TypicalRoadSection-25%cross-slopeF-20F.6.4TypicalRoadSection-30%cross-slopeF-21F.6.5TypicalRoadSection-35%cross-slopeF-22F.6.6TypicalRoadSection-40%cross-slopeF-23F.6.7TypicalRoadSection-45%cross-slopeF-24F.6.8TypicalRoadSection-50%cross-slopeF-25F.6.9TypicalRailroadSection0to10%cross-slope·F-26F.6.10TypicalRailroadSection15%cross-slopeF-27F.6.11TypicalRailroadSection25%cross-slopeF-28F.6.12TypicalRailroadSection30%cross-slopeF-29F.6.13TypicalRailroadSection35%cross-slopeF-30F.6.14TypicalRailroadSection40%cross-slopeF-31F.6.15TypicalRailroadSection45%cross-slopeF-32F.6.16TypicalRailroadSection50%cross-slopeF-33 r23/dINTRODUCTION1-1 SUSITNAHYDROELECTRICPROJECTACCESSPLANNINGREPORT1 -INTRODUCTIONTheSusitnaHydroelectricProjecthas,formanyyears,beenconsideredaviablesourceof"clean"energyforCentralAlaska.TheprojecthasbeenviewedasincludingoneormoredamsontheupperSusitnaRiver.Extensivepreliminaryworkhasbeendoneontheprojectbyvariousgovernmentagencies.Inanefforttoexpeditetheproject,theStateofAlaskathroughtheAlaskaPowerAuthority,inlate1979,initiatedthenecessaryfeasibilitystudiesandpreparationofthenecessaryFERC(FederalEnergyRegulatoryCommission)licenseapplication.Accesstotheprojectisapartofthosestudies.1.1-TheStudyAreaThelocationoftheprojectisapproximately120airmilesnorthofAnchorage(seeFigure1.1).Thedams,asproposed,wouldbeupstreamfromTalkeetnalayingbetweentheParksHighwayandtheDenaliHighway.Thisareaisremote,withnoexistingaccess.Thequantitiesofmaterialsandsuppliesrequiredforconstructionoftheprojectandforthemaintenanceoftheconstructioncampsareofsuchamagnitudeastorequiremajortransportationfacilitiestoservetheprojectsite.1.2-StudyDescriptionTheAccessPlanningStudyinvolvedtheselectionofpotentialhighwayandrailroadalignmentsthatwouldservethedamsitesr23/d1-2 selectedfordetailedstudy.Theprocessinvolvedaerialrecon-naissanceofthepotentialcorridors,definitionoftheparameterswhichcontrolthehorizontalandverticaialignmentandtheselec-tionandanalysisofalternativealignmentswhichservetheneedsoftheentireproject.1.3-ObjectivesAndScopeofStudyTheobjectivesoftheAccessPlanningStudyareasfollows:(a)Todefineanaccessroutelocationorcombinationofroutelocationsthatwillservethesupplyneedsofthehydroelectricprojectwithaminimumofenvironmentalimpact.(b)Todetermineareasonablecombinationoftransportationmodeswhichwillprovideacosteffectivesystemofsupply.(c)Todefineanaccessplanthatwillmeettheoverallschedulingrequirementsofthehydroelectricproject.TheScopeoftheStudyincludesthedefinitionandanalysisofrouteswithinthreegeneralcorridors.Corridor1islocatedonthenorthsideoftheSusitnaRiverfromtheParksHighwaytotheWatanasite.Corridor2isonthesouthsideoftheSusitnaRiverbetweenthesamegeneraltermini.BothcorridorswererequiredtoservebothDevilCanyonandWatanaDamsite.ThethirdcorridorconnectstheWatanaDamsitewiththeDenaliHighwaytothenorth.Bothroadandrailroadaccessaretobeconsidered.Thestudymustexaminethecorridorsandgeneratepreliminaryroutelocationsandcostestimates.Thecostsestimateswillincludethecostsofconstructingtheaccess,maintainingthefacilityandmovingmaterialovertheroute.TheenvironmentalimpactsofthevariousalignmentsaretobeaddressedunderTask7,howeverar23/d1-3 continuousflowofinputfromtheenvironmentalstudieswillbeprovidedtoaidinstudyingthealignments.Engineering,Soils,CostandEnvironmentalinformationwillbecombinedtodevelopalternateaccessplansthatsatisfythestatedobjectives.Thisreportwillpresentthosealternateplans.1.4-PLANFORMULATIONANDSELECTIONPROCESSThereareanumberofimportantfactorstobeconsideredindevelopingandanalysingtransportationfacilityplans.Thelocationsofthedams,ofcourse,dictateterminalpointscommontoallaccessplans.Thenumberandsizeofloadsofmaterialandsuppliestogetherwiththevolumeoftraffictobegeneratedbytheconstructioncamppopulationdictatethedesignparametersappro-priatetothefacility.Theterrain,soilsandenvironmentalcon-cernscontrolandlimitthepossiblelocationforthefacility.AllofthesefactorswiIIbeconsidered.(a)PlanningMethodologyTheplanningprocessfortransportationfacilitiesofthismagnitudeisoneofaseriesofiterationsinwhichproposalsaredeveloped,tested,revisedandtestedagainuntilaplanemergesthatservesthedesiredfunctioninacosteffectiveandenvironmentallysoundmanner.Followingthispatterndesignparametersweredevelopedthenpotentialalignmentswereselectedthatappearedtoservetheprojectneeds.Anumberofalternativealignmentswereidentifiedforfurtherconsideration.Duringtheprocessofevaluatingtheen-gineeringconsiderationsofthealternativessomewereeliminatedandsomesectionsofotherswererevisedsothatr23/d1-4 allremainingsectionsconformedtotherequireddesignparameters.Theinformationontheremainingsectionswasthengiventothegeologicalteamandtheenvironmentalteamforadditionalinput.Considerationofthisinputhasresultedineliminationofadditionalsectionsandchangesinsomeofthoseremaining.Thevariousavailableportfacilitiesandtransportationmodaloptionswereidentifiedandthencombinedwiththeremainingpossiblealignmentstoformpossibleaccessplans.Eachplanwasthenanalyzedtodeter-minehowwelltheprojectobjectivesweresatisfied.Anyadvantagesordisadvantageswereidentifiedandtheestimatedcostsforconstruction,maintenanceandlogisticsweredeveloped.(b)EconomicAnalysisEachaccessplanhasfourmajorcostfactorsassociatedwithit.Eachofthecostfactorswereconsideredandusedincomparingthealternateaccessplansanddeterminingthecost-effectivenessofthevariousplans.oor23/dConstructioncostestimateswerepreparedforeachalternative.Theseestimateswereverypreliminaryandvalidonlyforcomparisonanddeterminingtheorderofcostmagnitude.Morerefinedcostestimatesarenotpossibleornecessaryatthisstageofthework.Detailedcostestimatesarenotpossibleduetothelackofmicro-scaledata.Theestimatespreparedare,however,correctwithregardtoorderofmagnitudeand,becauseoftheassumptions,forcomparisonpurposes.Maintenancecostestimatesweredevelopedforthe1-5 oovariousplans.Thesecostscoveredonlymaintenanceonthefacilityconstructed.Maintenancecostsonexistingfacilitiesthatmaybeatributabletotheprojectwouldbedifficulttoidentifyandthedifferencebetweenplanswouldbeinsignificant.Logisticscostsasusedhereinarethecostsassociatedwithmovingmaterial,suppliesandequipmenttothesite.Portcosts,freightratesforvariousmodes,andthetransportationmodalsplitcombinetogeneratesignficantcostvariationswhencomparingaccessplans.Eachplanwasevaluatedbyestimatingthetransportationcostsformajormaterialitemstobemovedtothesite.Schedulecostswerediscussedintermsoftimedelaysthatwouldresultfromselectinganyofthealternateplans.Dollarcostswerenotestimatedforanysuchdelaysbecausethecomplexitiesofsuchestimatesgofarbeyondthescopeofthiswork.Itisintuitivelyobvious,however,thatwithaprojectofthemagnitudeoftheSusitnaHydroelectricProjectanydelaysfromtheplannedschedulewillhavemajorconstructioncostramificationsduetoinflationandsocialcostramificationsresultingfromtheinabilitytomeetthedemandforpower.1.5-OrganizationofReportTheobjectiveofthereportistopresentaseriesofalternativeaccessplanswhichservetheneedsoftheSusitnaHydroelectricproject.Thereportdoesnotincludeasinglerecommendedplan.r23/d1-6 Thebodyofthereportcontainsadiscussionofthepertinentfeatures.Detailedtechnicalinformationiscontainedinaseriesofappendices.Thereportisorganizedasfollows.Section1.IntroductionSection2.SummaryThesectioncontainsacompleteSummaryofthereport.Section3.ScopeofWorkThissectionoutlinestheScopeofWorkassociatedwiththeresultspresentedwiththisdocument.Section4.PreviousStudiesThissectionbrieflysummarizestheaccessinformationavailableinpreviousSusitnaBasinStudiesdonebyothers.Section5.ProjectDesignThisSectionbrieflydescribestheSusitnaHydroelectricProjectinawaythatsetsthestagefortheremainderoftheaccessanalysis.Section6.ProjectScheduleThissectiondiscussestheoverallplannedschedulefortheSusitnaHydroelectricProjectandidentifiestheschedulingrequirementsforconstructionoftheaccessfacilities.r23/d1-7 Section7.LogisticsReguirementsThissectionpresentstheestimatedquantitiesofthemajoritemsofequipment,materialsandsuppliesthatmustbetransportedtothesiteduringthecourseofconstruction,includingthesuppliesnecessaryfortheconstructioncamp.Anyparticularconstraintsaffectingthemobilizationand/ormovementofmaterialforaccessconstructionarealsodiscussed.Section8.AccessDesignParametersThissectiondiscussesthespecificsofthebasicdesignparametersforbothroadandrailroadconstruction.Theparametersdiscussedincludecurvature,maximumgrades,horizontalandverticalclearancerequirements,loadrequirementsandsurfacingrequire-ments.Section9.CorridorSelectionThissectiondiscussestheprocessbywhichthesuggestedcorridorswereselectedforstudyandincludesadiscussionofeachofthealignmentsegmentsoriginallyinvestigated.Section10.AccessPlansThissectionpresentsaseriesofalternateaccessplansincludingadiscussionoftheprosandconsofthevariousavailableports,shippingoptions,andlandtransportationmodes.Costestimatesforeachplanaredevelopedwhichincludeconstruction,main-tenanceandlogisticscosts.Section11.ConclusionsandRecommendationsConclusionsandrecommendationsarenotapartofthisreportbecauseadditionalenvironmentaldataistobeconsideredalongr23/d1-8 withthedatapresentedhere.toresultfromthatanalysisstudy.APPENDICIESAfinalrecommendationisexpectedcombinedwiththeresultsofthisAppendixAAppendixBAppendixCAppendixDAppendixEAppendixFr23/dPreliminaryDesignDevelopmentProposedAlternativeSegmentsAlternativeComparison-Grade,CurvatureandDistanceTerrainUnitMapsEnvironmentalConcernsAlternativePlans1-9 III~~~mI60!FIG.1.120INMILESMAPft'vtflNOR~HPOLE,Cr'A(refinery)Sp.....OENALIHr.8LOCATIONiWATANA..>i~-"..S'G-,s>~~-1-'4$TALKEETNA"Y.EN;.1-1HEALYoCANTWELL~---.,SUMMITLOC.:'<TIONMAP\IPROPOSEDDAMSITES.,.a' FROM r----l OTHERS INPUT FROM AVAILABLE SOURCES.PAST a CURRENT STUDIES Pre II minary Design Development /.Port Facilities f--- f-Model Split Recomendatlons Land Transport I---- Options .Define Define H Project H Desl nProjectsObjectivesg Parameters ~Logistic ,Requirements Logistic Estimates Roadway Options ~Soils Data I-- Develope AI ternative ~ Plan 3 Final Plan Sel ectlon Project Schedule ACCESS STUDY LOGIC DIAGRAM f--Corridor Selection Envl ronmental l '.,.j Concerns f-ioRailroad Options I I I I I I,-~I!!p~--.!i.ill!men.!.-A.s!l ~!)tLogisticsf--- Requirements, INPUT FROM OTHERS Public Input FIG.1.2 SUMMARY 2 -SummaryThissummaryisintendedtoprovideabriefoverviewoftheaccessstudyIitsmethodsandresults.2.1-ScopeofWorkThescopeofworkfortheSusitnaAccessStudywasdefinedingeneraltermsintheoriginalPlanofStudy(POS)fortheSusitnaHydroelectricProject.ThePOSrequiredthatthreecorridorsbeexaminedandthebothroadandrailoptionsbe'included.TheaccessplanwasrequiredtoservebothWatanaandDevilCanyonDamsandbeabletosatisfythedesiredprojectschedule.2.2-PrevousStudiesPreviousstudiesoftheSusitnaHydroelectricprojectwerereviewedtodeterminetheextentofworkthathadbeendonerelativetoaccess.Verylittlehadbeendone.TheCorpsofEngineershadcarriedtheaccessquestionthe.furthestandtheir1975reportsincludedaroadwaythatfollowedcloselythealignmentdescribedasPlan1fromParksHighwaytoWatanaonthesouthsideoftheriverviaGoldCreek.2.3-ProjectDesignPreliminarydesignofthehydroelectricprojectprovidedinputtotheaccessstudy.Thequantitiesofmaterialstobeimportedtotheprojectsiteandthesizeoftheworkcrewswereconsideredinestimatingthecostsoftransportionandinselectingtheportsandlandtransportationmodalsplitssuggestedinthevariousplans.r27/a2-1 2.4-ProjectScheduleTheoverallschedulefortheSusitnaHydroelectricprojecthasbeensetbasedonprojectedpowerrequirementsintheregion.ThesestudiesshowthatpowerfromWatanaDamisneededfirstwithpoweronlinerequiredin1993.Aperiodofeightyearsisprojectedtobuildthefacility.Thisrequiresinitialconstructionin1985.TheFederalEnergyRegulatoryCommissionslicenseisanticipatedinlate1984onearly1985.ConstructionofaccessfacilitiescannotpredatetheFERClicensethereforeanaccessplanwasdesiredthatwouldallowmobilizationandresupplyactivitiestooccurin1985.ThismeantaplanprovidingaccesstoWatanathatcouldbemadepassableinoneconstructionseason.TheestimatedconstructiontimeforDevilCanyonissevenyearswithconstruc-tionprojectedtobeginin1993.2.5-LogisticsReguirementsTheprimaryrequirementsprovidedbyothertasks.wiLhplannedconstructionratesofflowforsupplies.forimportedmaterialandsupplieswereThevolumesofmaterialswerecombinedschedulestoprojectrequiredaverageTABLE2.1MajorQuantitiesintheDamsExcavation(Rock&Earth)FillConstructionEquipmentExplosivesCementReinforcingSteelRockBoltsSteelSupport&LinersMechanical,Structural&ElectricalEquipmentFuelr27/aWatana22,000,000c.y.76,000,000c.y.16,000ton20,000ton350,000ton33,000ton12,500ton3,600ton15,000ton75,000,000gal.2-2DevilCanyon5,000,000c.y.1,335,000c.y.5,000ton3,000ton650,000ton22,000ton3,000ton2,200ton13,500ton17,000,000gal. Camppopulationswereestimatedat4,500personsforWatanaand3,100personsforDevilCanyon.Pastexperienceshowsthatcampsofthissizerequire13poundsoffoodandsuppliesperoccupantand1.1gallonsoffueloilperoccupantonadailybasis.*Thesequantitieswherecombinedwiththeconstructionschedulestodevelopthefollowingaveragematerialflowrequire-mentsfortheproject.*DataprovidedbyArcticHosts,Inc.,AnchorageAlaska.TABLE2.2SUMMARYOFREQUIREDAVERAGEMATERIALFLOWRATESWatanaDamDevilCanyonDamTrucks90110Contingency&Misc.1822Total108TruckLoads/week132TruckLoads/week::;RailCars3944Contingency&Misc.89Total47RailCarLoads/week53RailCarLoads/week2.6-ProjectParametersTherequiredfreightmovementsandthesizeandweightoftrans-formersandothermajorcomponentswereusedtoestablishparametersforline,gradeandloadrequirementsforbothrailwayandroadwayoptions.TheseparameterswerethenusedtoidentifypotentialaccessroutesandarebasedonstandardspublishedbyTheAmericanAssociationofStateHighwayandTransportationOfficials(AASHTO)andtheAmericanRailwayEngineeringAssociation(AREA).r27/a2-3 APPROVEDROADWAYDESIGNPARAMETERSTABLE2.3DesignSpeedMaximumGradeMaximumCurvatureDesignLoading(ConstructionPeriod)DesignLoading(AfterConstruction)TABLE2.460mph6%5%80KiptotalHS-20Axle&200KipU\'""'V\APPROVEDRAILROADDESIGNPARAMETERSMaximumGradeMaximumCurvatureLoading2.7-AlternativesSegments2.5%10°E-72.'Thedesignparameterswereusedtodefineaseriesofalternativealignmentsegmentsthatcouldbemixedandmatchedtodefinealternateaccessroutesmeetingprojectrequirements.Thesegmentsasoriginallydefinedweregiventothesoilsandenvironmentalteamsfortheirinput.Thatinput,alongwithengineeringconsiderationswasusedtoeliminatesomesegmentsandmodifyothers.Theremainingsegmentswerecombinedtoestablishpreferredroutesineachcorridor.ThesecorridoralignmentsareshownonFigure2.1.2.8-AlternativeAccessPlansAlternativeaccessplansweredeveloped.recommendedAlaskanports,linehaulmode,pointsanddeliverymode.Eachplanincludedlocationoftransferr27/a2-4 {(-(f)w(f)>l.lJ(f)j::<iw<l:uu:c.:~()zw-()a::3:0<l:wI00l-e..>I-....J()<l:Iwz...,00I,a::j::"c.<l:()~,0\;~....J"0:0aaUJ0:0:'"0~u>-:r<nUJ<>>"";;UJ~<nUJUJ\it-Z::J00:0:UJt-o..JUJ""0:0:UJU.UJUJ;:0::a.0II>Jw!-·:r:~ Theseaportscheckedincludethefollowing:AnchorageSewardWhittierValdezAnchorageisthepreferredportforthoseitemssuitableforship-mentinconventionalcontainersandtrucks.Theporthastheapparentadequatecapacityandthebestfacilitiesofthefour.ThedrawbackinAnchorageisalackofcapabilitiesforroll-onroll-offrailshipment.Anchoragedoes,attimes,haveaniceproblem.SewardisunabletocompetedirectlywithAnchorageinfacilitiesorcapacity.Sewardissuitableforanoverflowportasthereisequipmentavailabletohandlecontainercargoandthereisdirectrailandhighwayaccess.Sewardisanicefreeport..Whittierisuniqueinthatthereisroll-onroll-offrailcapability.BecauseoffreightratesandhandlingchargesWhitteristheobviouschoiceforarrivalofallmaterialsthatcanbeshippedbyrailcar.Valdezhasaconsiderablecapacityandisexpandingitsportfacilities.Valdezhasbeeneliminatedfrommajorconsiderationforanumberofreasonsthatwouldcontributetoincreasesinprojectcost.r27/aoooLackofRailServiceHighestWharfageandHandlingCostsofAnyoftheFourLongestTruckHaultotheProject2-6 AnchorageandWhittieraretheportsselectedandarecommontoallplans.LinehaulrateswerecollectedfromtheAlaskaRailroadandseveraltruckingfirms.Acomparisonoflinehaulratesisshownbelow.TABLE2.5LINEHAULRATESINDOLLARS/TON-MILEItemRailTruckEquipment0.18780.2069Steel0.25770.2069Cement0.1565 0.2069Fuel0.1450 0.2069GeneralCargo0.1262 0.2069Explosives0.62670.2069Whilecertainitemsmaymovebytruckwithlowercosts,themixofitemsandquantitiesmakeitclearthattheoverallmostcosteffectivelinehaulmodeisrail.Forthisreasonallplanscon-templaterailhaultothemaximumextentpracticable.Atotalofsevenaccessplanshavebeenoutlined.TherearenoplansincludingthesegmentsaroundPortageCreekastheengineering,soilsandenvironmentalproblemshavecombinedtomakethePortageCreekdrainageveryundesirable.Plan1servesbothDevilCanyonandWatanaDambyroadsouthoftheSusitnaRiver.ThisplanincludesarailheadatGoldCreekandroadaccesstotheParksHighway.ThisplanencounterssignificantamountsofcriticalwildlifehabitataroundStephanandFogLakes.TherearesomeextensiveareasofdeeporganicsoilsandsoilscontainingmassiveicenearStephanLake.Therearemajorscheduleconstraintsinvolvingtwomajorbridgesandextensiverockconstruction.Thescheduleconstraintsaresuchr27/a2-7 thattheconstructionofWatanacouldbedelayedbyasmuchasthreeyears.Plan2istherailroadalternativetoPlan1.Plan2alsodoesnotsatisfytherequirementofbeingabletoallowresupplyofcon-structionactivitiesatWatanainoneconstructionseason.Plan3servesWatanabyroadfromtheDenaliHighwayeastofCantwell.ArailheadiscalledforatCantwell.AccesstotheDevilCanyonDamisbyroadwitharailheadatGoldCreek.ThisplanmeetsallprimaryobjectivesofthestudybutdoesnotincludeadirectconnectionbetweenWatanaandDevilCanyon.Theroad-wayfromDenaliHighwaycanbemadeusableforconstructionequipmentandresupplyinoneconstructionseasonallowingaccesstoDevilCanyontobeconstructedasrequired.Plan4issimilartoPlan3exceptthataccesstoDevilCanyonistobebyrailratherthanroad.Plan5usesallroadwayconnectingwiththeParksHighwayandarailheadatGoldCreek.ThesouthsideoftheriverisfollowedtoDevilCanyon.AtthispointtheplancallsforahighbridgeovertheSusitnaRiverandutilizationofthenorthsidealignmentbetweenDevilCanyonandWatana.Thisplanavoidsthemajorityoftheidentifiedenvironmentallycriticalareasofallthreecorridors.Thereisamajortimeconstrainthowever.ThehighbridgeatDevilCanyonwouldhavetobeasuspensionbridgeapproximately2600feetlong.SuchabridgewouldrequireathreeyearconstructionperiodthusdelayingconstructionofWatanabyatleastthatmuch.Plan6isthesameasPlan4exceptthataroadisincludedbetweenWatanaandDevilCanyonfortheexclusiveuseofthemaintananceandoeprationspersonnel.Thisplansatisfiesallmajorobjectivesofthestudy.r27/a2-8 Plan7isthesameasPlan3exceptbetweenWatanaandDevilCanyonformaintenanceandoperationspersonnel.majorobjectivesofthestudy.thataroadisincludedtheexclusiveuseoftheThisplansatisifiesallThefinalchoiceofaccessplanwillbemadeafteradditionalinputfromtheremainderofthestudyteamcanbeevaluated.r27/a2-9 SCOPEOFWORK 3 -SCOPEOFWORKTheScopeofWorkdiscussedinthisSectionincludesthedevelop-mentandselectionofcorridoralignments,ananalysisofmodalsplitoptionsandselectionofalternativeaccessplansdesignedtoprovideacosteffectiveaccesssystemthatwillsatisfytheprojectrequirmentswhilemeetingtheprojectschedule.FurtherdetailsoftheScopeofWorkmaybefoundinAcres'PlanofStudy(POS).3.1-CorridorSelectionTheinitialstepinselectingthecorridorswasdefinitionoftheparametersthatcontrollineandgrade.Preliminaryestimatesofthesizeandweightofthecriticalcomponentsweremadeandthewidth,gradeandcurvatureparameterswereselectedtoallowmovementofthosecomponentsAfterthecontrollingparametersweredefined,possiblealignmentswereidentifiedusing1:63,360scalecontourmaps.Anumberofalternatesegmentswereidentifiedforfurtheranalysis.PotentialcorridorsweretobeidentifiedonbothsidesoftheSusitnaRiverfromtheParksHighwaytoWatanaand,fromWatananorthtotheDenaliHighway.AtleastonecorridorwastoincludeapotentialforrailservicetobothDamsites.Thealternativesegmentsweregroupedintopossibletotalroutes.Thepossiblerouteswerecomparedwithregardtoalignment,gradient,soilconditions,environmentalconstraintsandotherconsiderationstodeterminethemostfavorablealignmentwithineachcorridor.r27/c3-1 3.2ModalSplitAnalysisThemodalsplitanalysiswasnecessarytosuggesttheoptimummixoftransportationmodesandthemostadvantagoustransferpointbetweenmodes.Potentialseaportsandthecargohandlingcapabilityoftheres-pectiveportsareofprimeimportance.Itwasnecessarytodeter-mineifroll-onroll-offrailbargeservicewaspossibleorifmaterialmustcomebybargeandbetransferedtorailand/ortruck.FreightratesfortherailroadandfortruckhaulwerecheckedtodeterminethemosteconomicalwaytoshipvariousitemswithintheStateofAlaska.Theestimatedquantitiesofthemajoritemsweresuppliedfromothertasks.Usingthesequantitiesandtherateinformationavarietyofmodalmixoptionswereexaminedtodeterminethecosteffectivenessoftheapparentoptions.3.3AccessPlanDevelopmentThiseffortisamixandmatchexerciseinwhichthevariouscombinationsofpotentialcorridorsegmentsandmodalsplitoptionsaretestedtocomparecosteffectivenessoftheoverallplanandthedegreetowhichoverallprojecttimeschedulesareserved.Thecosteffectivenessofthevariousplansarebasedoncombinedcostsofconstruction,maintenanceandlogisticsovertheconstruc-tionlifeoftheproject.Thedegreetowhichtheoveralltimeschedulecanbesatisfiedisbasedontwofactors,estimatedconstructiontimefortheaccessfacilityandwhethertheplanwillallowinitalworkonthedamstobeginasplanned.r27/c3-2 PREVIOUSSTUDIES 4-PREVIOUSSTUDIESThestudiesdonebythevariousagenciesthathavelookedattheSusitnaHydroelectricprojecthavepresentedmuchinformationonthemanyalternativepowerdevelopementplans.Thesesamestudieshaveincludedverylittledataonaccesstotheproject.Generally,constructionofaroadispresumedandlittleelseismentioned.4.1.U.S.CorpsofEngineersThe1975reportpreparedbytheCorpsofEngineersincorporatedaroadaccessthatcorrespondsverycloselywithoneofthecorridorsdefinedinthestudy.ThataccessproposalbeganattheParksHighwaynearChulitnaStation,parallelstheAlaskarailroadsouthandeasttoacrossingoftheSusitnariverthenproceedsupthesouthsideoftherivertoDevilCanyonandonthe theWatanasiteviathenorthendofStephanLakeandthewestendofFogLakes.ThetCLcility_co01emplatedwasa64~fu91)wideroadway~-----=~."=.....designed/for30milesperllouf.ArailheadwasplannedatGold(/Creekals~4.2OthersOtherstudiesdoneontheSusitnaHydroelectricprojectovertheyearsmentionedaccessonlyinpassingand anddidnotdevelopaccessplans.r27/d4-1 PROJECTDESIGN 5 -PROJECTDESIGNTheSusitnaHydroelectricProjectisdevelopingasatwodamsystem.Thetotalsystemwillinclude,inadditiontothedamsthemselves,allassociatedon-sitepowergeneratingfacilities,andtransmissionfacilities.Alargeconstructioncampwithalloftherequiredsupportfacilitieswillbeneededduringconstruction,ateachdam,andapermanentvillagefortheoperatingandmain-tenancestaffwillbenecessaryafterconstructioniscomplete.Anairstripandotheraccessfacilitiesoverwhichalloftheequipment,personnelandsupplieswillreachtheprojectsitemustbeprovidedasearlyintheprojectaspossible.5.1-TheDamsandRelatedFacilities(a)TheWatanaDamisprojectedtobealargeearthandrockfillstructureinvolvingplacementofapproximately76millioncubicyardsofzonetypeembankmentthatwillcomelargelyfromborrowareasnearthesite.ThedamistobelocatedonthemainstreamoftheSusitnaRiverashortdistanceabovethemouthofTsusenaCreek.Duringconstruction,theriveristobedivertedthroughtunnelswhichwillbegatedandusedforotherpurposesaftercompletionofthework.ThePowerhouseisplannedtobeundergroundwhilethespillwaysaretobesurfacestructuresconfiguredtopreventnitrogensaturationofdownstreamwaters.Stagingareasforcon-structionactivitiesareavailableonbothsidesoftheriverattheWatanaSite.(b)TheDevilCanyonDamisprojectedtobeaconcretearchstructuresetinthesectionoftheSusitnaRiverknownasDevilCanyon.Toachieveplannedpoolelevation,alowsaddledamwillberequiredsouthofthemaindam.Riverr27/e5-1 diversionwillagainbethroughtunnelsduringtheconstruc-tionperiodandthepowerhouseforthisstructurewillalsobeunderground.ConstructionactivitieswillprobablybestagedfromthesouthsideatDevilCanyonbecauseoftheterrain.(c)TheTransmissionLinesareproposedforthenorthsideoftheriverfromWatanawesttoaconnectionwiththeAnchorage-FairbanksintertienearChulitnaPass.Thefinallocationofthetransmissioncorridorhasnotbeenselectedasofthistime.5.2-ConstructionCampsAConstructionCampisexpectedtobelocatedneartheWatanasiteandprobablyonthenorthsideoftheriver.Manpowerrequirementsbasedonquantitiesofmaterialsandprojectedconstructionscheduleshowaneedforupto4,500personsduringthepeakofconstructionactivitiesatWatana.Currentplanscallforaconstructioncampateachofthedams.ThereisashortageoflandsuitableforacampneartheDevilCanyonsite,however,thereisonesitenearthesouth·end.ManpowerprojectionsforDevilCanyonconstructionindicatesapeakpopulationof3,100persons.5.3-PermanentVillageThesizeandcomplexityoftheoverallsystemwillrequireafulltimemaintenanceandoperationsstaff.Projectionsshowthatthisstaffincludingtheirdependentswillrequireapermanentvillageofapproximately45dwellingunitsplussupportbuildings.'~dr27/e5-2 5.4-AirstripOver-allprojectdevelopment,thesizeoftheworkforceinvolvedandtheremotenatureofthesiteindicatethatanairstripwillbedesirableforawidevarietyofreasonsincludingthemovementofpersonnelandaneedofrapidemergencyevacuationcapability.Tothatend,arunwaysitehasbeenlocatedonthenorthsideoftheSusitnaRiverneartheproposedsitefortheWatanacon-structioncamp.Itisexpectedthattheairstripwillbeconstructedveryearlyintheproject.Theproposedfacilitywouldbeadequateforaircraftuptoandincluding-aC-130.Thelocationstudyfortheairstriphasbeendoneasapartofanothertask.5.5-ProjectAccessProvidingaccessintoaremoteareasuchastheupperSusitna,whilesmallincomparisontothetotalproject,is'amajorunder-takinginitself.Massivequantitiesofmaterial,supplies,equip-mentandfuelmustbemovedtotheprojectsiteinanuninteruptedflow.EstimatesoftheamountsoftheprincipalmaterialstobeimportedtothesiteandusedinconstructionofthedamsandrelatedfacilitiesareincludedinAppendixA.Themovementofmaterialsinsuchquantitiesrequiresarailroadorahightypeofhighwaycomparabletoruralhighwaysthroughoutthecountry.Theaccesstotheprojectisthetopicofthisstudy.r27/e5-3 PROJECTSCHEDULE 6 -PROJECTSCHEDULETheSusitnaHydroelectricprojectisintendedtoprovideelectricalpowertotheAlaskaRailbeltregion.ThetimeframeforprovidingtherequiredgeneratingcapacityhasbeendeterminedasaresultofTask6"DesignDevelopment".6.1-PowerDemandGrowthTheloadanddemandgrowthprojectionspresentedintheTask6"DesignDevelopment"reportindicatethatmore·electricalpowerwillberequiredbytheyear2000thancanbegeneratedbytheSusitnaHydroelectricProjectalone.ThedemandoverandabovethatwhichSusitnacansatisfywillhavetobeprovidedfromothersources,quiteprobablyfossilfuelfiredsteamgenerators.ThedemandgrowthcurvesindicatethatpowerfromtheWatanaDamisneededin1993andpowerfromDevilCanyonDaminneededby2000.TheWa1)anageneratingcapacitycanbeinstalledinstageswiththeinitial~~egawattsavailablein1993andthesecond400megawattsonlinein1996.6.2-GeneratingFacilityScheduleConstructionperiodsforWatanaDamandDevilCanyonDamareprojectedaseightyearsandsevenyearsrespectively.IfpowerfromWatanaisneededin1993andaneight-yearperiodisrequiredtoconstructthedamthenconstructionmustbeginin1985.PowerfromDevilCanyonisneededin2000.Backingupsevenyearsindicatesthatconstructionmustbeginin1993.TheconstructionschedulescurrentlyshowaccessconstructionbeginningJanuary1985withworkonthediversiontunnelsbeginningduringthesecondquarterof1985andonthecofferdamsandmainabutmentsofWatanainthethirdquarterof1985.r27/f6-1 6.3-AccessFacilityScheduleConstraintsAccessisanintegralpartofthetotalprojectandassuchissubjecttoFERCapprovalforconstruction.CurrentprojectschedulesarebasedonFERClicensinginlate1984.Accessconstructioniscurrentlyplannedtobegininveryearly1985,assoonaspossiblefollowingFERClicensing.Ifaccessconstructionistobeginin1985andconstructionactivitiesonthedamaretobegininmidtolate1985thenitisnecessarythatanaccessfacilitybeprovidedthatcanbepassableforheavyequipment,explosivesandfuelsuppliessometimeduringthe1985constructionseason.Anyaccessplanthatcannotbebroughttoroughgradeandkeptpassableinasingleconstructionseasonwillrequireoneoftwoscheduleadjustments,accessconstructionpriortoFERClicensingordelayinworkontheWatanaDam.r27/f6-2 LOGISTICSREQUIREMENTS 7-LOGISTICSREQUIREMENTSThedamsandassociatedfacilitiesareofasizethatrequire.vastquantitiesofequipmenttmaterialstsuppliesandpersonnelforconstruction.Becauseoftheremotelocationtabasecampmustbeprovidedthatwillresembleasmalltowncompletewithallessentialservicesneareachdamsite.Apermanentvillagemustalsobeprovidedfortheoperationsandmaintenancepersonnelwhowillbestationedattheprojectwhenconstructioniscompleted.Theprinciplelogisticsrequirementsincludetheequipmenttmaterialsandsuppliesnecessaryforthedamsandrelatedfacilitiesincludingthecampandpermanentvillagetthefoodandotheritemsnecessarytoprovideforthecrewduringconstructionandthelogisticsrequirementsforconstructionoftheaccessfacilities.Therequirementsforthedamsandrelatedfacilitiesandthecampsupplyneedswillbediscussedhere.Logisticrequirementsforthealternateaccessplanswillnotbediscussedindetail.Logisticrequirementsataccessconstructionwillvarywithlocationtlengthtandbridgerequirements.Significantconstraintsofaccessconstructionwillbeidentifiedhowevertthecostofthiselementoflogisticswillbeincludedintheestimatedconstructioncosts.7.1-ConstructionEquipment,MaterialsandSuppliesThefollowingestimatesofequipment,materialsandsuppliesarepresentedasabasisforthecostestimatestobegeneratedasapartofanalyzingandcomparingthevariousaccessplanstobepresented.ThemajorquantitiestobeincorporatedintotheprojectareshowninTable7.1.r25/e7-1 Table7.1MajorQuantitiesintheDamsExcavation(Rock&EarthFillConstructionEquipmentExplosivesCementReinforcingSteelRockBoltsSteelSupport&LinersMechanical,StructuralElectricalEquipmentFuelWatana22,000,000c.y.76,000,000c.y.16,000ton20,000ton350,000ton33,000ton12,500ton3,600ton15,000ton75,000,000gal.DevilCanyon5,000,000c.y.1,335,000c.y.5,000ton3,000ton650,000ton22,000ton3,000ton2,200ton13,500ton17,000,000gal.Additionalitemsthatwillberequiredforeachdaminclude:Tires,EquipmentParts,andmiscellaneouslumberandbuildingmaterial.Actualestimatedquantitiesarenotavailableandarelargelyafunctionofthecontractor'soperation.Foracomparisonoftransportationcostsonlytheeasilyidentifiedmajoritemswillbelistedindividually.Theseitemswillallowcomparisonsoftherelativedifferencesintransportationcostswhenreviewingalternativeplans.Inordertoestimatequantitiesoffuel,tiresandpartsrequiredateachsite,estimatesofequipmentfleetswithaverageunitfuelconsumptionfiguresweremade.SeeTable7.2.ThefuelconsumptionratesshowninTable7.2areestimatesbasedonAlaskanGeneralContractorsexperiencewithsimilarequipment.r25/e7-2 Table7.2ConstructionFleetFuelPerUnit#Units*Equipment(1gallon/hr.)WatanaDevilCanyon40C.Y.EndDumps214068C.Y.Loaders15.5105MotorPatrols(Cat14)6.584D-917305D-78103Cranes1024RockCrusher2012ScreeningPlant1012ConcretePlant1012MixerTrucks1033ForkLifts566DumpTrucks10102Compactors862PowerGenerator2022Miscellaneous72015Pickupsand26030otherGasolineVehiclesTotalUnitsByRail:ByRoad:FlatcarloadsTruckloadsselfdrivenunitsWatana13367143210DevilCanyon66316293*Thenumberofunitsrepresentstheanticipatednumberofpiecesnecessarybasedonthematerialsneededtobemoved,amountoftimepermachinetomovethemandthetotaltimeframeprovidedtocompletethetask.Whenthisinputwasnotavailableitisaresultofestimatesfrompreviousprojectexperience.r25/e7-3 Table7.3WEEKLYDIESELFUELREQUIREMENTSFORCONSTRUCTIONEquipmentWatanaDevilCanyonTypegallons/weekgallons/weekEndDumps94,08014,100Loaders17,3608,680MotorPatrols5,8202,900D-957,1209,520D-78,9602,700Cranes2,2404,480Crushers2,2404,480ScreeningPlant1,1202,240ConcretePlant1,1202,240MixerTrucks3,3603,360ForkLifts3,3603,360DumpTrucks11,2002,240Compactors5,3801,790PowerGenerator4,4804,480MiscellaneousVehicles15,68011,760**TotalGallonsperweek227,70078,330*Assume24hoursperdayandseverndaysperweek.Anassumptionhasbeenmadethat1/3oftheequipmentwillbedownforserviceandmaintenanceatalltimesthisprovidesfor112hours/weekbase.~~,Thisisanestimatedaveragefuelflowageduringthemajorportionoftheactivity.Actualflowagemayvarysignificantly.Table7.4REQUIREDDIESELFUELDieselFuelTruckLoads@7,500Gal./load***RailCarLoads@20,000Gal/load***Watana227,700Gal./wk.30Loads/wk.11Loads/wk.DevilCanyon78,330Gal./wk.10.4Loads/wk.4Loads/wk.***Sizesofloadsaretypicalofwhatiscurrentlyavailable.r25/e7-4 TABLE7.5REQUIREDMATERIALFLOWRATESWatanaDevilCanyonGasolineTruckLoads@7,500Gal./IoadRailCarLoads@20,000Gal./IoadTimeRequirement***CementQuantityperweekTruckLoads@30ton/Load*RailCarLoads@75ton/Load*Steel(all)QuantityperweekTruck@30tonRailCarLoads@75tonExplosivesQuantityperweekTruckloads@30tonRailCarloads@75tonMechanical,StructuralElectricalQuantityperweekTruckloads@30tonRailcarsloads@75tonTiresandParts**Truckloads20,160Gal./wk.3Loads/wk.1Load/wk.7yrs.350,000ton1154ton/wk.38.5Loads/wk.15.4Load/wk.49,100ton162ton/wk.5.4Loads/wk.2.2Loads/wk.20,000ton66ton/wk2.2load/wk0.9load/wk15,000ton49.5ton/wk1.6load/wk0.7load/wk2Loads/wk.10,000Gal./wk.1.3Loads/wk.0.5Load/wk.6yrs.650,000ton2,500ton/wk.83.3Loads/wk.33.3Load/wk.27,200ton105ton/wk.3.5Loads/wk.1.4Load/wk.3iOOOton11.5ton/wk0.4load/wk0.15load/wk13,500ton52ton/wk1.7load/wk0.7load/wk2Loads/wk.SubtotalTrucksLoads/wk.52.7SubtotalRailCarsLoads/wk.22.292.238.1"Sizesofloadsaretypicalofwhatiscurrentlyavailable.,'d,ThisFigurerepresentsaroughestimateoftruck/railcarloadsofmaterialsthatwillbeneededformaintenanceofconstructionequipment.*,~kAssumeddeliveriesover10monthsperyearactivityand1yearlessthantotalconstructiontime.Theschedulesshowstartupperiodofaboutoneyearbeforethepeakactivitylevelsareapproached.r25/e7-5 7.2-SupportReguirementsSuppliesandfuelforthebasecampsmustflowsteadilyandsmoothly.Ithasbeenestimatedtheconstructioncamppopulationwillbeapproximately4,500forWatanaand3,100forDevilCanyon.Acampoperationreporttogetherwithinformationfromexperiencedarcticworkcampcontractorsindicatesacampof3,000-5,000peoplewouldrequireapproximatelythirteen(13)poundsoffoodandsuppliesperpersonperdayandfuelforpowerandheatat1.1gallonsperpersonperday.Thesefiguresconverttothefollowingdeliveryrates:CampSupplies4500personsx13lb.x7days=204.8tons/week(Watana)2000Ib./tonman-dayweek3100persons13lb.7days141.1tons/week(DevilCanyon)xx=2000Ib./tonman-dayweekTruckLoads@30tonseach=RailCars@75tonseach=Watana6.8load/wk2.7load/wkDevilCanyon4.7load/wk1.9load/wkCampFuel4500personsx1.1gal.7days=35,000gal./week(Watana)xdayweek3100personsx1.1gal.7days=24,000gal./week(DevilCanyon)xdayweekr25/e7-6 TruckLoads@7,500gallons=5loadsperweekforWatana;3lzperweekforDevilCanyon.RailCarLoads@20,000gallons=2loadsperweekforWatana;1\perweekforDevilCanyon.7.3.-PermanentVillageThepermanentVillageisestimatedas45dwellingunits.Itisexpectedthatconstructionofthevillagewilloccuroveraperiodoftwoyearsatanaverageoftwotruckloadsofmaterialsperdwellingunit.7.4-SummaryofFreightMovementsThefollowingsummaryoffreightmovementsisintendedtoshowtheorderofmagnitudefortransportrequirementsontheaccessfacility.Table·7.6SUMMARYOFREQUIREDAVERAGEMATERIALFLOWRATESWatanaDamDevilsCanyonDamTrucks95111Contingency&Misc.1922Total114TrucksLoads/week133TruckLoads/weekRailCars3845Contingency&Misc.89Total46RailCarsLoads/week54RailCarsLoads/weekNote:Totalfuel.includesTables7.4,7.5,campsuppliesandcampTotaldoesnotincludeinitialmobilizationofconstruc-r25/etionequipmentormaterialsforpermanentvillage.7-7 7.5-PersonnelMovementsInadditiontotherequirementsformovingfreighttheworkersthemselvesmustbemovedtothesite.Thereareatleastfouroptionsforaccomplishingthemovementofpersonneldependingonthenatureoftheaccessfacilityprovidedandthetypesofcontrolsputontheconstructionpersonnel.Constructioncrewsandsupportpersonnelwillbeworking7daysperweekandthreeshiftsperday.Evenwiththiskindofschedulelargenumbersofpeoplewillbeoffshiftatanyonetime.Itwouldseemappropriatethatthesepeoplehavesomewayofleavingthe.area.Optionsincludethefollowing:1.Anaircraftshuttle2.Arailshuttleifrailonlyisprovided3.Abusshuttle4.PrivatevehiclesAnaircraftshuttlecouldbeusedforthemovementofpersonneltotheconstructioncamp.Transportationcostswouldbehighandthemodeisextremelyvulnerabletoweatherlimitations.Severaloftheaccessplansoutlinedhereinincludeoptionsforaccesstoallorpartoftheprojectbyrailonly.Thecamppopulationsaresuchthatasteadyflowofpersonneltoandfromcampmaybeexpected.Ifonlyt§)percentofthep~pulati;;;~travelsonagivenday,thetotalpersontripswillbeintherangeof300to500daily.Railcoachesnormallyseat50to80persons.Ifaccesstoeitherdamislimitedtorailonly,thenaregularlyscheduledshuttletrainofanengineandtwotofourpassengercarswillbeneededtoprovidetherequiredservice.Thisservicecombinedwiththefreighthaulrequirementswillnecessitateadditionalrailsidingsandamuchmorecomplexcommunicationsystemontherails.r25/e7-8 Ifroadsareprovidedasprimaryaccesstothejobsite,abusshuttlecouldbeprovidedforpersonnelmovements.Thiswouldbestbehandledbycommericalcarrier.Thecostcouldbeborn,,-eitherbytheindividualortheproject.Theuseofprivatevehiclewouldbethesimplestmethodtoad-minister.Itwouldalsoallowtheworkersthegreatestflexibility.Ifonly10%ofthepopulationtravelsonagivenday,trafficvolumesontheaccessroadcouldexceed500vehiclesperday.Trafficvolumesatthislevelnormallywarrantapavedsurfaceratherthanagravelsurface.Forthepurposeofcomparison,inthisreport,logisticscostswillnotincludepassengertransportation.r25/e7-9 ACCESSROUTEDESIGNPARAMETERS 8.-ACCESSROUTEDESIGNPARAMETERSTheplanofstudyfortheSusitnaProjectcallsfortheanalysisofthreegeneralroutesandtwotransportationmodestoprovideaccesstotheproposeddamsitesfromportfacilitiesorinstatesourcesofsupply.Considerationmustbegiventousingroad,railroadoracombinationofbothtoservetheproject.Thealternateroutestobestudiedwererequiredtoaccomodatethefollowing:ooServealldamsitesthatmightbeprovenfeasiblebyotherportionsoftheoverallstudy.CorridorshadtobeincludedontheNorthandSouthsidesoftheSusitnaRiverwithconnectionstotheAlaskaRailroadnearGoldCreek,totheParksHighwayandtotheDenaliHighway.Inordertobeabletomakeavalidcomparisonbetweenalterna-tivesabasisforthatcomparisonmustbeestablished,withthisthoughtinmind,proposeddesignciriteriaweredeveloped.8.1-RoadwayParametersOriginallytheaccessroadwasenvisionedasalowvolumeserviceroad.Theroadwastobeadequateformovingthenecessaryamountsofmaterialandpersonnelbutnotnecessarilyinconfor-mancewillallrequirementforamajorpublichighway.Asaresulttheoriginalproposeddesignparameterswerefora30mileperhourdesignwitha(3QT,oottopwidth.'-::-Jr25/f8-1 TABLE8.1ORIGINALPROPOSEDDESIGNCRITERIARoadDesignSpeedMaximumGradeMaximumCurvatureDesignLoading30mph10%19°HS-20Designcriteriasuchastheseareusedtoestablishguidelinesfordesign.Thedesignernormallyattemptstoprovidehorizontalandverticalalignmentthatisbetterthantheminimumalignmentsuchlimitswouldprovide.Inordertomaintainschedule,workbeganonanumberofpossiblealignmentspriortoapprovaloftheproposedcriteria.Whilethecorridordefinitionworkwasinprogressinformationoncertainprimarydamcomponentswasdevelopedthatrequiredflattergradesandcurves.Satisfyingthesecriteriawouldprovidea-roadwaythatwouldessentiallyconformtoa50-60mileperhourdesignspeed.Subsequentworkconfirmedtheneedforroadway-designcriteriafor60mileperhourdesignspeed.Therelativelyhighroadwaydesignparametersarerequiredbecauseofthesizeandweightofcertaincomponentsofthedamsthatmustbemanufacturedandimportedtothesite.TheapprovedroadwaydesignparametersaregiveninTable8.2.Withacceptanceofthedesignparameters,atypicalcrosssectionwasdevelopedandisdepictedinFigure8.1.Projectedtrafficvolumessuggestthatasphaltpavementshouldbeprovidedifpersonnelaccesstotheconstructioncampsisbyprivateauto.r25/f8-2 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SUSITNA ACCESS ROAO TYPICAL CROSS SECTION ~~~~ TVPICAL ROAD CROSS SECTION' ~...""",,",n~_1 o 5 10 SCALE IN FEET !.ALASKA POWER AUTHORITY ::iU::iITNA HYDROELECTRIC PROJECT TABLE8.2APPROVEDROADWAYDESIGNPARAMETERSDesignSpeedMaximumGradeMaximumCurvatureDesignLoading(ConstructionPeriod)DesignLoading(AfterConstruction)8.2-RailRoadParameters60mph6%5°80KipAxle&200KiptotalHS-20ThevolumeofbulkmaterialstobemovedtotheSusitnaprojectduringthefifteenyearperiodofconstructionmakeconsiderationofrailservicemandatory.TheprincipleconcernwithusingtheAlaskarailroadwastheloadcapacityofexistingtrackageandbridges.Horizontalandverticleclearencesgoverningtheoverallsizeofloadsthatcanbemovedbyrailarecontrol·ledbyexistingfacilities.TheexisitingfacilitiesconformtotheAmericanRailwayEngineeringAssociation(AREA)standards.TheEngineeringofficefortheAlaskaRailroadstatesthattheARRiscurrentlyratedasanE-50railroad.TheyareintheprocessofupgradingtoE-80facilities.TheChiefEngineerfortheARRrecommendedusinganE-72loadingforrailwayplanning.InputfromtherailroadengineeringstaffandAREAstandardssuggestthefollowingdesignparameterswouldbeappropriate.TABLE8.3APPROVEDRAILROADDESIGNPARAMETERSr25/fMaximumGradeMaximum.CurvatureLoading8-42.5%10°E-72.* i: o·G·O&~".,11,.111;;'" f)),<?-:'""')II}'II >' N.'t~ .\\~a ~I :--:111 ,'\1"11l~/ill'".,. ,1//,11 :.-!l;~{~ 3 ' " -014'-Or14'~O" r -~z,,~-o' l~'-O'r------------j -----------1 I r;m,~ I ~', ',~~1=L-~B=~-lG;----J ~../I I!.1l;1 I I _,,,f--- I \dllt'~' /1 '.'I'~~ 2.1 ...sU6I3ALLA>ST ~.\'[1--),. I .<.i' SU8G~P.DE",;J),'> /1·1~~"X;;\\\V;1,{~~(/,;~":tW,\\VIIJ;~..v/l,{~\!jjJ..0(1/~YI,I/&\(/~VI/A'Vf~"MY~':';{::';;:«l·:':"'$:~-0-Y//'~\.\.'1k,.v//~'«,~\'a~'V/&:-'\.Ylifl}v.;f~:'1 IM\v:;~~\Vj'/~:~{j'k~%--~~iii ,.'>.~.~.'I~~.\.....st lll ....:.'\~,\' "!'l-.,lIlt"\~"~I\\\- \11(" TYPICAL RAILROAD CROSS SECTION j ,I 012.5 GO SCALE IN ~EET \\ ~, <::>') R G~~~~l"e~~j ---."- IIPnm 1..!'.t:!,~K~_!'?I'IER_~U!H?~I~Y_HUUro SUSITNA HYOROELECTRIC PROJECT SUSITNA ACCESS RAILROAD TYPICAL CROSS SECTION CORRIDORSELECTION 9.0-CORRIDORSELECTIONThegenerallocationsforthepotentialaccesscorridorsweredefinedinthePOS.Thenextstepintheprocesswasthedeterminationofwherewithinthesegeneralcorridorsfacilitiescouldbebuiltthatwouldconformtotherequireddesignparameters.Tothatend,aseriesofalternatesegmentswereidentifiedandthenevaluated.Thissectiondocumentstheprocessbywhichthissegmentselectionwasdoneandtheresultsoftheevaluation.9.1-MethodologyTheSusitnaHydroelectricProjectislocatedonasectionoftheSusitnaRiverthatisremotewilderness.Earlierstudiesbygovernmentagencieshadgeneratedsomecontourmappinginthevicinityoftheproposeddamsites.TheonlyotheravailablecontourinformationwasUSGSmappingonaone-inch(1")equalsone(1)milescalewithone-hunderdfoot(100')contourintervals.Toaidtheprojectteaminselectingpossibleroutes,alowlevelhelicopterflightwasmadeinlateMarch,1980.AmosaicwasthenmadeoftheUSGSmappingfromGoldCreekandtheParksHighwaythroughtheWatanasiteandouttotheDenaliHighwaynorthofWatana.Usingthepreliminarydesignparametersandinformationgainedfromtheoverflightoftheprojectarea,anumberofpossiblealignmentswerelaidoutonthemapmosaic.Thevariousalternativesweresplitintoconvenientsegments.Someofthesesegmentswereuniquewhileotherscouldbecommontotwo(2)ormorealternatives.Eachsegmentwasanalyzedforgradesonasectionbysectionbasis.Eachcurvewascheckedfordegreeofcurveanddeflectionangle.Eachcurveandeachidentifiablegradientsectionwerethentabulated.Thevarioussegmentsconsideredwerecombinedtoprovideatotalofr25/d9-1 thirty-six(36)possiblealignmentalternativesthatcouldconceivablybeconstructedtoprovideaccesstooneorbothoftheprincipledamsites.Thevariouscombinationsofsegmentsmakinguppotentialaccessroutealignmentswerecompared.Thealign-mentsidentifiedasbeingthemostattractivewithineachofthethree(3)generalcorridorsrequiredbytheplanofstudywasselectedforfurtherwork.AlowlevelreconnaissanceflightwithpartoftheenvironmentalteamwasmadeApril30,1980toreviewtheproposedcorridoralignmentspriortothephotographicflights.Valuableinputforfutureanalysiswasgained,andtherewasnothingidentifiedthatwouldforceamajorline..changeatthisearlystageofthework.OnMay5,1980theproposedcorridoralignmentswereapprovedforphotographicflights.Forthepurposeofanalysistheproposedgeneralcorridorsareidentifiedasfollows:Corridor1Corridor2Corridor3OnthenorthsideoftheSusitnaRiverbetweentheParksHighwayandtheWatanaCamp.OnthesouthsideoftheSusitnaRiverbetweentheParksHighwayandWatanaDamsite.Thiscorridorisbeingstudiedforrailroadpossibilitiesaswellasroad.ConnectingWatanaCampwiththeDenaliHighwaytothenorth.9.2-DiscussionofAlternativeAnumberofalternativesegmentswereconsideredwithineachofthesethree(3)generalcorridors.Thealternativesegmentswithinr25/d9-2 therespectivecorridorsarediscussedbelowandshowninAppendixB.(a)Segment1-A(i)DescriptionThissegmentbeginsnearMP156ontheParksHighwayinthevicinityofChulitnaPass.ThelinerunssoutheastthroughChulitnaPasscrossingtherailroadnearsummitlake,thenproceedseasterlyacrossIndianRiverandontothePortageCreekCanyon.ThelinetravelsnortheasterlyforseveralmileswhiledesendingintoacrossingofPortageCreekthensouthwesterlywhileclimbingoutofPortageCreektothenorthsideoftheDevilCanyonDamSite.FromDevilCanyonthelineproceedsnortheasterlycrossingintotheupperreachesofDevilCreektheneasterlythrougha4,OOO-foothighpassandfollowsadrainaget~acrossingofTsusenaCreekthensouthtothenorthsideoftheWatanaDamSite.Over-alilengthofthelineissixtyfourandsevententhsmiles.ThesegmentisshownonFigure9.1.(ii)LineandGradeSegment1-AiswellwithinthedesiredlimitswithregardtoalinementandgradewiththeexceptionoftheportionthroughPortageCreekandnearDevilCanyon.TheterraininPortageCreekCanyonisverydifficult.Providinganalign-mentthroughPortageCreekCanyonthatconformswiththedesignparameterswillrequireveryheavyearthworkandseveralsmalltomediumlengthbridgesacrossthesidedrainages.r25/d9-3 (iii)DrainageFeaturesMostofthedrainagesalong1-AcarryflowspassedthroughstandardculvertsquiteBridgesormultiplatepipewillberequiredforPortageCreek,DevilCreekandTsusenaCreek.(iv)Bridgeswhichcanbesatisfactorily.IndianRiver,Asstated,atleastfourbridgesareexpected.TheIndianRiverbridgeisa440-footlongthreespanstructurewhoseconfigurationisdictatedmorebytheshapeofthecrossingthanbythequantityofwaterintheriver.ThePortageCreekbridgewillbeatwoorthreespanstructureapproxi-mately200feetlong.TheDevilCreekbridgewillbeasimpleonespanstructurelessthan100feetlong.TheTsusenaCreekbridgeisexpectedtobea260-footthreespanstructuresimilartothePortageCreekbridge.Anycon-structionwithinthePortageCreekCanyonwillrequireadditionalstructuresintheunder200-footclassatseveralsidedrainages.(v)SoilsMuchofthealignmentforsegment1-AfromtheParksHighwaytoDevilCanyontraversesfrozensoils,generallybasaltillwithmoderatesideslopes.Drillholesindicatepermanenticebeginningatdepthsofaroundfifteenfeet.Thematerialconsistsofgravels,sandsandsilts.Properlyhandledthematerialcanbeusedtoconstructroadbed,howeverthesiltsandsandswiIIerodereadiIyunlessprotected.Thematerialisgenerallyfrostsusceptibleduetothesiltcontentwhichwillrequireasubstantialnon-frostsusceptiblesubbaselayerintheroadbed.Thesoilisverysusceptibletothawsettlementmakingitnecessarytoseverlyr25/d9-4 limitthedepthofexcavationandthenrequiringextensiveborrowareastoprovideroadwayembankment.ThereareextensiveorganicsinthesectionoflinefromtheParksHighwaythroughChulitnaPass.Thismaterialistentotwentyfeetdeepandwillbedifficulttobuildon.Theremainderofthesegmentencountersoccasionalsmallareasoforganicsoils.WiththeexceptionofthecrossingsofPortageandTsusenaCreekstheseareasoforganicscanbeavioided.ThePortageCreekCanyonsectiontraversesverysteepcrossslopes.Becauseofthefrozensoilsanyroad-waycon-structionintheareacouldresultinmajorerosionandthawsettlementproblemsatdeepcutswillbeunavoidable.Thesectionof1-AfromDevilCanyontoWatanatraversessoilswithshallowtoexposedbedrock.Mostofthissectiontraverserelativelygentlecross-slopes.Theseconditionswillallowroadbedconstructionwithoutundueproblemswitherosionandthawsettlement.Borrowsourcesareavailableclosebythealignment.(vi)EnvironmentalConcernsPortionsofSegment1-Ahavesignificantpotentialenviron-mentalproblems.ThesectionbetweentheParksHighwayandChulitnaPasstraversesanobviouswetlandareaandencroachesontheDenaliStatepark.BothIndianRiverandPortageCreekareanadromousfishstreams.IndianRivercouldbecrossedwithoutaseriousconflictwiththefish,howeverthepotentialforerosionthatwouldresultfromconstructioninthePortageCreekCanyonmaywellposeathreatt~thePortageCreekfishruns.ThelowerPortageCreekareahasbeenidentifiedasapotentialraptorareaandr25/d9-5 mostofPortageCreekisknownfurbearerhabitat.ThealignmentbetweenDevilCanyonandWatanadoesnotencroachonanyenvironmentallysensitiveareas.(vii)SegmentSUitabilitySegment1-Aisactuallyafulllengthalternatealignment.ThesectionfromtheParksHighwaytoDevilCanyonisnotconsideredsuitableforaccessconstruction.Thissectionhasnumerousconstruction,soilsandenvironmentalproblems.ThesectionfromDevilCanyontoWatanaremainsviable.(b)Segment1-B(i)DescriptionSegment1-Bisanalternatetoaportionof1-AbetweenDevilCreekandTsusenaCreek.Thesegmentbeg(nsjustwestofDevilCreekanddropsintotheDevilCreekdrainage,cros-singthecreek,andswingsnorthandeastpastMamaBearLake,thensoutheasterlythroughawidepassat3,400-footelevation,thenproceedseasterlytorejoinsegment1-AbeforereachingTsusenaCreek.SeeFigure9.1.Thisalignmentliessouthof1-Aandutilizesabroader,lowerpasswhichshouldbeeasiertokeepopenduringandaftersnowstorms.ThecrossslopesaregentletomoderatewiththesteepestbeingasthelineclimbsoutofDevilCreek.Thissegmentis16.2milesinlengthr25/d9-6 (ii)LineandGradeAlignmentandgradeonthissegmentarewellwithintherequiredparameters.(iii)DraninageFeaturesSegment1-Bencountersnomajororcomplicateddrainagefeatures.Crossculvertswillberequiredatintervals.TheonlymajorstreamcrossingisDevilCreek.(iv)BridgesTheonlyBridgeonthissegmentisexpectedtobetheDevilCreekcrossing.ThisbridgewillbeasimpletwohundredfOCltstructure,probablywiththreespans.(v)SoilsSomefrozenBasaltillwithshallowbedrockoccursasthelinedropsintoDevilCreek.Crossslopesaresuchthatheavycutsshouldnotberequired.Erosionandthawsettlementproblemsshouidbekepttoaminimum.ThecrossingofDevilCreekisonthawedsoilsgenerallyAblationtillsandfloodplaindepositswhicharegoodsoilsforroadbedconstruction.ClimbingoutofDevilCreek,thelinecrossesgoodsoilswithbedrockatornearthesurface.FrozensoilsarenotencountereduntilltheeastendofMamaBearLake.Theremainderofthealignmentissporadicallyfrozensoilshowevertheterrainhasgentletomoderateslopeswhichwillallowroadbedconstructionwithoutheavycuts.r25/d9-7 SUSITNA HYDROELECTRIC PROJECT ALASKA POWER AUTHORITY -~ -.f'- ....C~';·"-..... 1 .... /',,;1 •.' ~..."'-. OWN ~.-- APPV'O ,~,', "......J".-..-. (vi)EnvironmentalConcernsThissegmentdoesnotappeartocrossanyenvironmentallysensitiveareas.Thealignmentisgenerallyatorabovethetreelineandconflictswithwildlifeappeartobeminimal.Whereerodablesoilsareencountered,slopesareflatenoughthataminimumofsoilwillbeexposedtherebykeepingthepotentialforerosiondown.(vii)SegmentSuitabilitySegment1-Bisaviablealternate.Itdoesexhibitsomeadvantageover1-Ainthatthepassislowerandsuchthatsnowcontrolshouldbeeasier.(c)Segment1-C(i)DescriptionThissegmentleaves1-Bat·DevilCreekanddescendsDevilCreektotheSusitnaRiverthenuptheSusitnaRivercrossingTsusenaCreeknearitsmouthandclimbingtothenorthendoftheWatanaDam.Thisalignmentwasintendedtoprovide'awaterlevelaccessalongtheDevilCanyonreservoir.SeeFigure9.2.Thesegmentis27.5milesinlength.(Ii)LineandGradeThissegmentcanbeconstructedtomeet30mphdesignspeedbutcannotmeetthedesiredparameters.Therearetwosectionswheregradesapproachingeightpercentcannotbeavoided.r25/d9-9 (iii)DrainageFeaturesThissegmentisgenerallysidehillconstructionwithnumerousstreamcrossings.WiththeexceptionofDevilCreekandTsusenaCreek,culvertsshouldhandlethedrainageconcernswithnomorethannormalconsiderations.(iv)BridgesTwobridgesarepositivelyidentifiedatDevilCreekandatTsusenaCreek.Bothbridgeswouldbeintheonehundredfiftytotwohundredfootcatagorywithtwoorthreespans.(v)SoilsThisalignmentcrossesgenerallygoodsoilswithsomescatteredfrozenmaterialsnearWatanaCamp.TheportionofAlternate1-CalongtheSusitnaRiverismostlyinfrozenmaterialscomposedofsolifluctiondepositswhicharecomposedofsaturatedsoilmaterialandrockdebrisespeciallysubjecttofrostcreepordownslopemovement.Inadditiontherearelargeslidescarareascrossedandoneapparentlyactivelandslidearea(seeAppendixD).Theunfrozenandorganicsoilsatthesurfacearecoveringsectionsofpermafrostandthesesoilsarepronetofrcstheaveandthawsettlement.Sincethemajorityoftheslopesfacethesouth,thawingismorelikelygivinglowerbearingstrengthsandverylowslopestabilityasevidencebytheexistingslidescars.r25/d9-10 (vi)EnvironmentalConcernsThereareanumberofpotentialenvironmentalcon-cernswiththisalignment.Erosionfromcutandfillslopesinfrozensoilsandexistingslideswouldbeamajorproblem.Thetimberedsidehillsareimportantmooseandblackbearhabitat.ThemostimportanthabitatareaisnearthemouthofTsusenaCreek.(vii)SegmentSuitabilityThissegmentisnotverysuitable;poorsoilscondi-tions,theinabilitytomeetgraderequirements,andtheencroachmentsonwildlifehabitatmakethissegmentunattractive.Inaddition,thealignmentencroachesonaborrowareaneededforconstructionofWatanaDam(BorrowAreaC)andcrossesaportionoftheconstructionarea.(d)Segment1-DThisalignmentisashortersteepercrossingofPortageCreek.Thealignmentusesswitchbacks,steepgradesandsharpcurvestominimizetheamountofdamageinthePortageCreekCanyon.SeeFigure9.2.Thesegmentis9.0milesinlength.(ii)lineandGradeVerticalandhorizontalalignmentviolatethedesiredparameters.Thereisnopossibilityofconstructinganacceptablealignmentonthissegment.r25/d9-11 (iii)DrainageFeaturesTherearenosignificantdrainagefeaturesonthisalignment.Ditchesandcrossculvertswouldbestandardtypeconstruc-tion.(iv)BridgeAbridgewouldberequiredatPortageCreekthesegment1-APortageCreekBridge;structureapproximately200feetlong.(v)SoilsverysimilartoathreespanThissegmenttraversessomeverysteepgroundcompletelycharacterizedbyfrozensoilswhicharehighlysubjecttoerosionfthawsettlementandfrostheave.(vi)EnvironmentalConcernsPortageCreekisananadromousfishstreamandthereisconcernthaterosionofcutandfillslopeswouldbedetrimental.Inadditionthealignmenttraversesknownfurbearerhabitatandpotentialraptornestingareas.(vii)SegmentsSuitabilityThissegmentisnotsuitableforfurtherconsideration.(e)Segment1-E(i)DescriptionThissegmentisanalternatecrossingofTsusenaCreekr25/d9-12 upstreamfromthe1-Acrossingandconnectswith3-AnearDeadmanCreek.SeeFigure9.2.Thissegmentis7.5mileslong.(ii)LineandGradeWhilelongerthanthe1-Acrossing,TsusenaCreekwitheasiergradesalignment.(iii)DrainageFeaturesthisandsegmentcrossesgoodhorizontalTherearenosignificantdrainagefeaturesonthissegment.Normalditchandculvertconstructionwillserve.(iv)BridgesAbridgewillberequiredoverTsusenaCreek.willbeasimpletwospan·structureofaboutlength.(v)SoilsThebridge150feetinThissegmentcrossesgenerallythawedsoilseXhibitinggoodroadbuildingcharacteristics.(vi)EnvironmentalConcernsThecrossingisfarenoughupTsusenaCreektoavoidthemostcriticalmoosehabitat.Thesoilsaresuchthattheerosionpossibilitiesarelow,makingthisanattractiveoption.r25/d9-13 (vii)SegmentSuitabilityThisisagoodsegmentmuchmoresuitablethan1-AintheTsusenaCreekdrainage.Thebridgecrossingisgoodandcrossslopesaremoderate.(f)Segment1-F(i)DescreptionThissegmentisanalternatetothesectionof.·1-AfromParksHighwaythroughChulitnaPass.ThissegmentcrossestherailroadtrackclosertothehighwayandtraversesthebaseofChulitnaButteagainsttherailroadtracksconnectingwith1-AeastofSummitLake.SeeFigure9.2.Thissegmentis4.1mileslong.(ii)LineandGradeThissegmentconformswiththepreferreddesignparametersalthoughisnotasstraightandflatasthecompariblesectionsof1-A.(iii)DrainageFeaturesNomajordrainagesfeaturesareencountered.Thereareafewsmallstreams.crossedwhichcanbehandledwithculverts.Thelinedoesavoidthewetlandareatraversedby1-A.r25/d9-14 (iv)BridgesThissegmentdoesnotincludeanybridges.(v)SoilsThissectioncrossesfrozenbasaltillandorganicsoilsjustas1-Adoes,however,theextentoforganicsismuchsmaller.1-Fisfurtherupslopeandonmoderatecross-slopes.Theterrainisgenerallysuitableforfilltypeconstructionoftenusedtobridgeorganicsandinsulatefrozen··soils.Aswithotherareasoftheprojectthereissome10-15feetofunfrozensoiloverthepermafrost;atleastaportionofwhichcanbeworkedinnormalfashionprovidedduecareisusedwithregardtoerosion,thawsettlementandfrostheave.(vi)EnvironmentalConcernsThefirsttwomilesofthelineencroachonacornerofDenalistateparkessentialyparralleltotherailroad.Thisalign-mentmayrequirethetakingofsomedwellingunitsintheChulitnaPassarea.Nocriticalhabitatsareaappeartobeimpacted.(vii)SegmentSuitabilityThissegmentessentiallyparallelstherailroadandinsodoingshouldhaveminimaladdedenvironmentalimpact.Thewetlandareainthepassisavoidedand,whilefrozenandorganicsoilsareafactor,theycanbedealtwith.Thissegmentispreferabletothecorrespondingsectionof1-A.r25/d9-15 -\It.~'.J•->-f-.'.f---uUJ0::w-,a00:::I:Q.f-:::lu<t0::'-.•f-,U;0:w0i~'w...JW?:0\..J-~a0::0-,\,i'Cl..>-(Jj;;.,.iI:I:;-.<<t""Z'~~,tz~:0enf-....:E:t"<t~,UlJ,.J::>m: (g)Segment2-A(i)DescriptionThissegmentbeginsatShermanontheAlaskarailroadsouthofGoldCreek.ThealignmentclimbstheriverbluffsviaswitchbackstothehighergroundneartheheadofGoldCreek.FromtherethelinerunsgenerallyeastonthehighgroundtothedivideabovePrairieCreek.ThelinethendesendsalongaridgeandpassesjustnorthofStephanLakethenproceedseasterlytoacrossingofFogCreekandnorthtotheWatanaDamsitepastthewestendofFogLakes.SeeFigure9.3.Thisalignmentis56.7mileslong.(ii)LineandGradeThisalignmentconformsquitewellwiththedesignparametersexceptfortheclimbfromShermantotheheadofGoldCreek.Thissectionisswitchbacksusinggradestotenpercentandverysharpcurves.(iii)DrainageFeaturesDrainagefeaturesalongthisrouteareroutine.TheonlyproblemareasbeingthewestareanearStephanLakeandnearFogLakewhereflat,boggyandfrozengroundwillbedifficulttodrain.(iv)BridgesTheonlyBridgeinvolvedwiththisalignmentisthecrossingofFogCreek.Thisisamajorbridge.Thecanyonisfairlyr25/d9-17 deepwithnearverticalrockwalls.Thelengthofthecrossingisapproximately600feet.Theprobablestructuretypeisacontinuousdecktrussthatcanutilizecantilevertypeconstructiontechniques.Thisbridgewilltakeeighteentotwentyfourmonthstoconstructandwillrequireapassableroadoverwhichtotransportmaterials.Thisbridgecouldbeamajorscheduleconstraint.(v)SoilsThisalignmenttraversesavarietyofsoils.TheclimbthroughtheswitchbacksfromShermanisinanareaoffrozenBasaltilloverbedrock.Thesteepterrainwillrequireheavycutsandfillswhichwillnotbesuitable.TheBasaltilliserodableandsubjecttofrostheaveandthawsettlementsallofwhichwouldbemajorproblemintheswitchbackarea.ThesectionfromtheheadofGoldCreektothePrairieCreekdividecrossessporadicallyfrozensoilsandcolluvialdepositsmixedwillbedrock.Thematerialisgenerallyacceptableforroadbedconstructionprovidedpropercareisexercisedwithregardtofrostsusceptibilityanderosioncontrol.Scatteredpocketsofshalloworganicsexistthatcouldbelargelyavoided.FromPrairieCreekdividetoWatanathesoilsareLusterinesoverfrozentillswithpocketsoforganicsandsomebedrocknearFogCreek.Thesoilsareacceptableforroadbedcon-structionprovidedthatconsiderationisgiventofrostsuscept-ability,andthawsettlementanderosion.ThesoilsneartheendofStephanLakeshowevidenceofmassiveice.Thisareashouldbeavoidedifpossible.r25/d9-18 (vi)EnvironmentalConcernsTheenvironmentalconcernsalongthisalignmentareintheStephanLake-FogLakesarea.Theseareasareprimehabitatsforvarityofbiggameanimals,waterfowl,andfurbearers.ThereisapotentialforraptoruseintheFogCreekarea.Thesesameareashavebeenidentifiedashavingarcheologicalsitesofpotentialsignificance.Thereisaconcernthatpublicaccesstotheseareawillhavedetrimentaleffectsonbiggamepopulationsandonthearcheaologicalsites.(vii)SegmentSuitabilityTheportionfromShermantothePrairieCreekdivideisnotconsideredassuitablebecauseofdifficultlineandgraderestrictionsaboveShermanandthefactthatthislinedoesnotdirectlyserveDevilCanyon.TheportionfromthePrairieCreekdividetoWatanaissuitableforconstructionalthoughtherearesomeunavoidableenvironmentalconcerns.AportionofthelinepassesthroughborrowareaHdesignatedforuseinconstructionWatanaDam.Somere-routingwouldberequiredtoavoidthemassiveicenearStephanLake.(h)Segment2-B(I)DescriptionThissegmentbeginsinatthesouthsideoftheDevilCanyonDamsiteandtravelssouth,upCheechakoCreek,abouttwomilesbeforeturningeastandcrossingthecreek.Thelinethencontinuessoutheasterlyforaboutfivemileswhiler25/d9-19 climbingtothetopofadeepgorge.Atthispointthesegmentturnssoutherlyfollowingthetopedgeofthegorgetoitsheadandjoin2-AatthePrairieCreekdivide.SeeFigure9.3.Thissegmentis13.6milesinlength.(ii)LineandGradeThehorizontalalignmentonthissegmentisacceptable.ItisnotpossibletobringtheportionsouthofDevilCanyonintoconformancewiththerequiredgradientcriteria.7%to10%gradeswouldberequiredforabouttwomiles.(iii)DrainageFeaturesThisalignmentislocatedonhighgroundwithlittleornodrainagesinvolved.Theoneexceptionisathreemilereachthatfollowsasmallstream.Thelineappearstobeabovethestreamfarenoughtoavoiddirectconflictsandshouldbenoproblem.(iv)BridgesOneBridgewillberequiredcrossingCheechakoCreek.Thiswillbeoveradeeprockgorge.Itwillbecurvedandwillrequirelongspansandsometalltowersfortheintermediatesupports.Becausethebridgewillbeonacurveitwilllikelybeasteelboxgirderstructure.Asecond,moreconventionalbridgemayalsoberequiredacrossatributaryofCheechakoCreek.r25/d9-20 • SUSITNA HYDROELECTRIC PROJECT ~.........~.v .....u.~1IiiiI-.~..1l;;I IV.... ~~L DWN_I-----I \. R&M CONSULTANTS,INC. .............O.D '...'..............'--'-'~--'-"';'''':'.I-__..L.__--l (v)SoilsThesoilsareBasaltilloverbedrock-generallyfrozenalongthefirstpartofthelineandbedrockorcolluviumoverbedrockalongtheremainder.Thefrozentillisonvariablecrossslopesmuchofitsteepenoughtorequirelargefillstoavoidcutsinfrozensoils.Extensiveborrowmayberequiredtoprovidematerialforthefills.(vi)EnvironmentalConcernsPortionsofthissegmenttraverseareasusedbycaribouaswinterrangebecausethewindkeepstheridgetopsblownofsnow.Nootherenvironmentalconflictshavebeenidentified.(vii)SegmentSuitabilityThewesterlysectionof2-BnearDevilCanyonisnotsuitableinthatexcessivegradescannotbeavoided.Theeasterlyendalongthedeepgorge.approachingthePrairieCreekdivideishighlysuitableinthatsoilsarerock,gradesandalignmentsatisfactory.(i)Segment2-C(i)DescriptionThissegmentrunssouthfrom2-BnearDevilCanyonuptheCheechakoCreekdrainagetojoin2-A.ThiswasintendedtobethesideconnectiontoserveDevilCanyonfrom2-A.SeeFigure9.4.Thissegmentis7.5mileslong.r25/d9-22 (ii)LineandGradeThehorizontalalignmentonthissegmentissatisfactoryhowevergradesexceedthedesiredmaximumwithnowayofimprovingit.Overfourmilesofthelinewouldbeinthe7%to9%range.(iii)DrainageFeaturesTherearenospecialdrainagefeaturesalongthesegment.Severalcrossdrainagesexistihoweverstandardditchsandculvertswillserve.(iv)BridgeTherearenobridgesonthissegment.(v)SoilsThissegmentcrossesunfrozencolluvialdepositsandbedrockgenerallyacceptablefornormalroadwayconstructionwithproperattentiontoerosioncontrolandfrostclassificationofmaterials.(vi)EnvironmentalConcernsTherehavebeennosignificantenvironmentalconflictsidentifiedalongthisalignment.(vii)SegmentSuitabilityThissegmentisnotconsideredsuitablebecauseofexcessivegrades.r25/d9-23 (j)Segment2-D(i)DescriptionThissectionbeginsatSherman,crossestheSusitnaRiverandcutsthroughapassinsideDenaliStateParktoconnectwiththeParksHighway.SeeFigure9.4.Thissegmentis10.7mileslong.(Ii)LineandGradeAllofthishorizontaland6%however.segmentconformsverticalealignment.totherequirementsforThegradesdoapproach(iii)DrainageFeaturesThissegmentislocatednearlyinthebottomofdrainagesandmaygeneratesomeconflictswiththestreams.Inadditionthereisawetareainthepasswestoftheriverwhichmayresultinsurfacedrainageproblems.(Iv)BridgesAmajorbridgeovertheSusitnaRiverwillberequired.bridgewillbeamulitspanstructure,probablyweldedgirders,andapproximately1,000feetlong.(vi)SoilsTheplateThesoilsalongthiscorridorhavenotbeenmapped.Thematerialimmediatelynorthhasbeenmappedandisfrozenbasiltilloverbedrockwithsomepocketsoforganicsinter-spersed.r25/d9-24 (vi)EnvironmentalConcernsThissegmentcutsdirectlythroughDenaliStatePark..SomewetlandsareinvolvedandwhilenotverifiedthevegitationistypicalofotherareasthathavebeenidentifiedasMoosehabitat.(vii)SegmentSuitabilityThissegmentisnotconsideredviablebecauseitpassesthroughDenaliStateParkandwoulddisrupttheParkwithoutdemonstratinganoffsettingdistinctadvantage.(k)Segment2-E(I)DescriptionsThissegmentconnects2Aand2DatShermanwith1-AatChulitnaPass.Thelinesgenerallyparallelstherailroadandwaslookedatasanalternativeto2-DinconnectingwiththeParksHighway.FromShermantoGoldCreekthealignmentrunsbetweentherailroadandthebaseofthemountain.Intwolocationsitissqueezedintosomedifficultsidehillcon-struction.AftercrossingtheSusitnaRiverthelinestaysbackfromthebluffaboveIndianRivertoavoidsomesidehillconstruction.SeeFigure9.4.Thelengthofthelineis15.6miles.(ii)LineandGradeHorizonalandverticlealignmentconformwiththedesiredparameters.r25/d9-25 (iii)DrainageFeaturesTherearenospecialdrainageconsiderationsonthissegmentnormalditchesandculvertswillserve.(Iv)BridgesThereareatotalofthreebridgesidentifiedonthissegment.ThemainstreamSusitnaRiverBridgeislocatedimmediatelyupstreamoftheRailroadBridge.ThefirstoftwobridgesoverIndianRiverisjustupstreamfromtheSusitnaRiverandwillbeanapproximately400-foot,threespanstructure.ThesecondbridgeoverIndianRiverisnearChulitnaPassthiswillalsobeanapproximately400-foot,threespanstruction.(v)SoilsThissegmenthasavarietyofsoiltypes.TheportionsouthoftheSusitnaRivercrossingislargelyalluvialandfloodplaindepositsexhibitinggoodroadbuildingcharacteristics.Thismaterialisunfrozenandnormalcarewitherosioncontolandfrostheavewillresultinaqualityfacility.ThesectionnorthoftheSusitnaRivercrossesfrozenBasal tilland,somefloodplaindepositsnearthestreamcrossings.(vi)EnvironmentalConcernsTheprincipleenvironmentalconcernsforthesegmentresultfrompotentialimpactsontheSusitnaandIndianRivers.Ineachcasethereisapotentialforequipmentworkinginthestreams.Theimpactsshouldbetemporaryinnatureandnotadverselyeffectthefishpopulations.r25/d9-26 ...z r;~~,';,~{. ...." ALASKA POWER AUTHORITY SUSITNA HYDROELECTRIC PROJECT SUSITNA ACCESS CORRIOOR SEGMENT 2C=7.5 MI. SEGMENT'20=10.7 MI. il SEGMENT,2E=1 5.6 MI~1- DJI'0'VL OWN:I \-' .~c.;....:..JV CKD L. ~~~~..C;:~.~Q~!-:'l::!:::~,::?'~!~.~:APPV'O ThesegmentdoesborderaStatelanddisposalareaknownasthe"IndianRiverRemote"disposal.(vii)SegmentSuitabilityTheentiresegmentportionsofitmaybeaccepted.(I)Segment2-F(I)Descriptionissuitableforuseddependingonconstruction.OnlythefinalaccessplanSegment2Fisaroadalignmentdevelopedtoshortenthedistancetraveledby2AincrossingFogCreek.Thesegmentusesabridgeandsomewhatsteepergradetoeffectanearlystraightcrossingratherthanalongswitchback.SeeFigure9.5.Thissegmentis3.9mileslong..(Ii)LineandGradeThissegmentdoesconformtothedesiredparametersforhorizontalandverticalalignment.Gradesdoapproachthe6%maximum.Thehorizontalalignmentcanallowsafetruckoperationsonthealignmentandneednotbedesignedatthemaximumcurvature.(iii)DrainageFeaturesThesegmentdoesnotencountermajordrainagefeaturesotherthanFogCreek.AbridgewillberequiredforFogCreekwhileotherdrainageconsiderationscanbetreatedsatis-factorilywithnormalditchesandculverts.r25/d9-28 (iv)BridgesAmajorbridgeisrequiredonthissegmentatFogCreekthestructurecrossesadeeprockygorge.Thestructuretypesuggestedisadecktrussbecauseofthepropablespanarrangementandheightofintermediatesupporttowers.Structuresofthistyperequireconsiderablelengthoftimetoassemble.Oneandonehalftotwoyearsisprobable.(v)SoilsThesoilsareLusterinesoverfrozenBasaltillssouthofFogCreekandfrozenBasaltillsoverbedrocknorthofFogCreek.ThereisbedrockatornearthesurfaceatFogCreek.ThesouthsideofFogCreekisadesignatedborrowsourceforWatanaDam.(vi)EnvironmentalConcernsTheentireareatraversedbythesegmenthasbeenidentifiedasMooseandCaribouhabitat.FogCreekhasbeenidentifiedaspotentialraptorhabitat.(vii)SegmentSuitabilityThesegmentisconsideredsuitableforconstructionwithoneexception.ThealignmentdoespassthroughoneoftheborrowsourcesforWatanaDam.Forthisreasonsegment2-Jwasselectedand2-Fdroppedfromfurtherconsideration.r25/d9-29 (m)Segment2-G(i)DescriptionSegment2-GbeginsatDevilCanyonDamonthesouthsideandfollowsthesidehillupstreamwhileclimbingtojoinsegment2BasbothlinesturnsouthawayfromtheSusitnaalongthetopofadeepgorge.Thissegmentisanalternateto2-Bthatcanconformwithdesignparameters.SeeFigure9.5.Overalllengthofthesegmentis7.7miles.(ii)LineandGradeThissegmenthasacceptablelineandgrade.Thesegmentwasdesignedtobypassthegradeproblemsofsegment2-B.(iii)DrainageFeaturesStandardculvertsandditcheswillserveallknowndrainageconsiderationsforthissegment.(iv)BridgesThissegmentincludesamajorstructureoverCheechakoCreekjustafterleavingDevilCanyon.Thisstructurewouldbeathreespandecktrussoveradeepnarrowgorge.Thistypeofstructurewillrequireoneandonehalftotwoyearstoconstruct.(v)SoilsSoilsonthesegmentarevaried.PortionsofthelinecrossfrozenBasiltillwithbedrocknearthesurface,exposedr25/d9-30 bedrock,andbedrockunderColluvium.Crossslopesaregenerallysteep.Thissegmentwillrequireextensiverockexcavationresultinginslowconstruction.(vi)EnvironmentalConcernsThesegmentpassesalongtheSusitnaRiverbankswhichhavebeenidentifiedaspotentialraptorhabitat.Extensivesidehillconstructiononfairlysteepterrainincreasesthepotentialforerosionandslides.(vii)SegmentSuitibilityThissegmentissuitableforconstructionshouldsouthsideroadaccessbeselected.Therearesomeschedulingconstraintshoweverbecauseofthebridgesandtheextentofconstructioninrock.(n)Segment2-H(I)DescriptionThissegmentleaves2-EatIndianRiverandcloselyparallelstherailroadsouthacrosstheSusitnaRiverthenturnsnortheasterlytoconnectwith2-1abouttwomilesupstreamfromGoldCreek.ThissegmentwouldbeonelogicalrouteifroadaccesswereprovidedfromtheParkHighwaywhileprovidingarailheadatGoldCreek.SeeFigure9.5.Thissegmentis5.4mileslong.(Ii)LineandGradeThehorizontalandverticalalignmentsforthismeetdesiredsegmentwillparameters.r25/d9-31 ., ~ -.-.,.... I :J: AUTHORITY ... Mo"..IT~n• SUSITNA HYDROELECTRIC PROJECT '.1 ...""'....v ..;;;"••""'....-.....-<VI"I~: ~L }OWN 1==1 . ~&M CONSULTANiS,INc. ......'"'O.CU .•,.".A ..,."",~ J\\':1 ~:. (iii)DrainageFeaturesTheonlydrainagefeaturesofnoteonthissegmentareIndianRiverandtheSusitnaRiver.(iv)BridgesBridgesrequiredonthissegmentwouldbesimilarincon-figurationtothoserequiredattheSusitnaRiverandthefirstIndianRivercrossingofSegment2E.Thelocationwillvaryfromthe2-Elocation,howeverthegeneraldesignwouldbesimilar.(v)SoilsThesoilsencounteredalong2-HarelargelyfloodplainandterracedepositswithportionslocatedonfrozenBasiltill.(vi)EnvironmentalConcernsBoththeSusitnaRiverandIndianRiverareanodromousstreamsattheproposedcrossing.Bridgeconstructionwouldhavetobedoneinamannerapprovedbytheresponsibleagencies.Noothersignificantenvironmentalconcernshavebeenidentified.(vii)SegmentSuitabilityThissegmentissuitableforconstruction.Allorpartmaybeuseddependingonthefinalaccessplanadopted.r25/d9-33 (0)Segment2-1(i)DescriptionThissegmentislocatedonthesouthsideoftheSusitnaRiverslowlyassendinginelevationtoreachthesouthendofDevilCanyonDam.Thesegmentbeginsabout2milesaboveGoldCreek.SeeFigure9.6.Thesegmentis11.4mileslong.(ii)LineandGradeThissegmenthasverygoodhorizontalandverticalalignmentgenerallyprovidinganalignmentthatwillbebetterthantherequiredminimumswouldprovide.(iii)DrainageFeaturesSeveraldrainagescrossthissegment.requirelargeculvertssuchasmultiplatetypecommontohighwayconstruction.alignmentfollowsasmalldrainage,careprotectthisstream.SomeofthesemayorpipearchesofaAportionofthemustbetakento(iv)BridgesItdoesnotappearthatanybridgeswillberequiredonthissegment.Therearetwodrainageswherefinaldesignmaydictateasmallbridgehowevernothingthatwouldbeasign-ificantscheduleconstraint.r25/d9-34 (v)SoilsNearlyallofthissegmenttraversesfrozenBasaltillonsideslopesvaryingfromflattomoderatelysteep.Caremustbetakennottocutsodeepastodisturbthethermalregimewithoutinsulationorotherspecialfeaturestoprotecttheunderlyingconditions.Largequantitiesofborrowwillberequiredforthissectionbecauseofthefrozensoils.(vi)EnvironmentalConcernNomajorenvironmentalconcernshavebeenidentifiedalongthissegment.Therearesmallwetlandareasthatmustbeconsideredinfinaldesign.(viii)SegmentSuitabilityThissegmentissuitableforconstructionofroadway.AccesstoDevilCanyonfromGoldCreekcouldbeprovidedfairlyrapidlyviathissegment.(p)Segment2-J(I)DescriptionThissegmentprovidesanalternativeto2AaroundStephanLakeandtheborrowareanearFogCreek.Thealignmentmovesnorthof2AasispassesStephanLaketoavoidsomewetlandandbadsoilareasthencrosses2Aandrunssouthandeastof2Ajoining2FnorthofFogCreek.SeeFigure9.6.Thesegmentis12.2mileslong.r25/d9-35 (ii)LineareaGradeThissegmenthasgoodlineandgradeitsentirelength.Therearesomemaximum(6%)gradesatFogCreek.(iii)DrainageFeaturesThisalignmentcrossesseveralsmalldrainagesofthetypenormallyhandledwithculverts.Thereappearstobenosignificantdrainageproblems.(iv)BridgesThereisamajorbridgeoverFogCreek.Thisbridgewouldbesimilartothestructurerequiredon2-F,multispan,andapproximately500feetinlength.Itmaybepossibletouseaweldedplategirderstructureratherthanatruss.Ifso,somesixtotwelvemonthscouldbesavedontheconstructionschedulewhencomparedtothebridgeson2-F.Thisbridgewillstillrequireayeartobuild.(v)SoilsThesoilsalongthissegmentarelargelyLusterinesoverfrozenBasaltills.Thesesoilsaresensitiveandrequirecareindesigningslopes,ditchesandotherfeaturestoavoiderosion,frostheaveandthawsettlement.Crossslopesaregenerallygentletomoderatethusallowingcutstobekepttoaminimum.(vi)EnvironmentalConcernsTheentiresegmenttraversesqualitywildlifehabitat.Moose,Bear,Caribou,Raptors,andFurbearersusethisarea.Ther25/d9-36 segmentdoesstayfurtherfromStephanLake,otherthanthattheimpactswouldbecomparibleto2A.(vii)SegmentSuitabilityThesegmentissuitableforconstruction.Ithastwoadvantagesover2AinthatitisfurtherfromStephenLakeandtheassociatedenvironmentalconcernsanditskirtstheedgeofborrowareaHforWatanaDam.(q)Segment2-K(i)DescriptionThissegmentwasproposedasashorteralternativetoaportionof2-H.Thesegmentleaves2EasthesouthsideoftheSusitnaRiverandturnssharplyeastclimbingtojoin2Hontopofabluff.SeeFigure9.6.Thissegmentisonly0.9miles.long.(ii)LineandGradeThissegmentconformstotherequiredparametershowevermaximumcurvatureandgradientsareinvolved.(iii)DrainageFeaturesNosignificantdrainagefeaturesareencounteredbythissegment.r25/d9-37 :J: c--.i'~~ (~a~p',~-+i;',wt~l'( \ ..~.'" ALASKA POWER AUTHORITY if ;:11::11..::I1"11::1'11'...........--.-.......{ ~.IOWN!I ::....-.£\-n.~....... ~'.(;') (iv)BridgesNobridgesareinvolvedonthissegment.(v)SoilsThesoilscrossedarefloodplaindepositsandfrozenBasaltills.Muchofthealignmentwouldrequirehighfillscon-structedofborrow.Somecutsinfrozenmaterialarealsolikelyasthelinejoins2-Hontopofthebluff.(vi)EnvironmentalConcernsNomajorenvironmentalconflictsappearalongthissegment.(vii)SegmentSuitabilityThesegmentissuitablebutnotdesirableduetotheuseofmaximumcurvesandgradesandtherequirmentforhighfills.(r)Segment2-L(i)DescriptionThissegmentisparallelto2Econnectingl-AatChulitnaPasswith2-1eastofGoldCreek.Portionsarecoincidentwith2E.TheprimarypurposeofthisalternateistoprovidealinethathaslesspotentialforconflictwithaStateofAlaskaLanddisposaltract.AnotherpotentialSusitnaRivercrossingisidentifiedthatallowsthealignmenttoavoidgoingoveroraroundashort,highbluff.SeeFigure9.7.Thislineis8.7mileslong.r25/d9-39 (ii)LineandGradeThehorizontalandverticlealignmentsforsegement2-Lsatisfyallrequirements.(iii)DrainageFeaturesNoabnormaldrainageseveralsmallcrossculverts.(iv)Bridgesfeaturesareencountered.TherearedrainagessuitableforconventionalTheSusitnaRivermustbecrossed.Thisstructurecanbeamulitspancontinuousweldedplategirderstructure.Theoveralllengthissuchthatapproximatelytwoyearswillbeneededtoconstructthisstructure.ThissegmentalsorequiresonebridgeoverIndianRiver.Thiswouldbeathreespancontinuousweldedplategirderstructureabout400-footinlength.(v)SoilsThesoilstraversedbythesegmentarepredominatelyfrozenBasaltill.Caremustbetakentoavoiddisturbingthethermalbalance.Thesideslopesaremoderate.ThelineisintendedtostayalongthebreakjustonthetopofabluffalongIndianRiver.(vi)EnvironmentalConcernsTherearesalmonusingIndianRiver,betakentominimizeerosion.Thereistothefeelingr25/dline.Propertyownershaveabouthavinganyaccess9-40thereforecareshouldprivatepropertycloseexpressedanegativefacilitynearthem. .~,:,~\,~.I;~.'-_·~li..:..J~.'"''.<_JQ'•I;"..'~>-f-'.-l-t>-..a:::wIn:E..,a0'"In:I:a."I-W~lgl'~:::lt>•'.<t0:UIIm<.f-luouC-.[]II'"t>;a:::w...Iw..J«Dti'w(II:;:0-2'a'"((II0...'a.>-Uij\:z:2II·2I-<t2~"'"Wgzenf--:E:.JlJ):JCJWWIn (vii)SegmentSuitabilityThesegmentissuitableforconstructionandwouldbepreferabletothecorrespondingsectionof2E.Itreducesthepossibilityofanypotentialencroachmentonprivateproperty.ThelinerequiresonelesscrossingofIndianRiverthandoes2-E,andprovidesagoodcrossingoftheSusitnawhileeliminatingtheneedtobuildoveroraroundabluffonthesouthsideoftheSusitnaRiver.(s)Segment2-R(i)DescriptionThissegmentistheprinciplerailalternativeidentifiedfortheproject.Thealignmentiswithincorridor2onthesouthsideoftheSusitna.ThelinewouldbeginattherailroadatGoldCreektraversingashortsectionofsteepterrainatwaterlevelthenbecomingcoincidentwithSegement2-1allthewaytoDevilCanyon.FromDevilCanyon2-RtraversesthesidehillabovetheSusitnaRiverparalleltoandbelowsegment2-GturningsouthandrequiringafullbenchcutupthesideofasteepgorgetothePrairieCreekdivideaboveStephanLake.FromthispointthesegmentisessentiallycoincidentwithSegment2-AallthewaytoWatanaDamexceptforafewsectionsthatrequirewiderswingstomaintaintheacceptablegrades.SeeFigure9.8.Thelineis57.7mileslong.(Ii)LineandGradeThelineconformswiththedesiredparametersforrailroadconstruction.Therulinggradeisapproximately2.5%whichr25/d9-42 weareadvisediscomparabletosomemainlinesectionsontheAlaskaRailroad.(iii)DrainageFeaturesDrainagefeaturesalongtherouteincludethesamesmallstreamsandwetareasencounteredbytheroadwaysegments.Culvertswillhandlemostcrossdrainagesalthoughafewwillbelargeenoughtorequiremultiplateorpipearchtypestructures.Therearesomewetlandareasthatmustbeconsideredalso,particularlynearStephanLake.(iv)BridgeTherailroadalignmentrequiredonlyonemajorbridge.ThatisacrossCheechakoCreekjustupstreamfromDevilCanyon.ThiswillprobablybeaDeckTrussrequiringthreespans.Thistypeofstructurewillrequireabouttwo'yearstobuildandnorailservicecouldbeprovidedwithanysortofbypass.(v)SoilsThisalignmentcrossesthesamegeneralsoiltypeasothersegmentsdescribed.Muchofthealignmentisonfrozensoilsthattendtobesubjecttoerosion,frostheave,andthawsettlementwithafewsectionsofdeeporganicsoilsandonesectionbetweenDevilCanyonandStephanLakehavingveryheavyrockwork.ThislinealsocrossesthemassiveiceareanearStephanLake.r25/d9-43 ~_':1i.:,.J>-•I-...f-'-'~0::w...,00"0::c0.f-•::J!2"ZI"I'~<tII),.'"0.<."'-'"-....'"0::~\';\.~WII0'"-;-~~::;Nz:0-,\c....([j;1-,<t«22;l:>:::z~~(J)ן-m<t:.J'<I)~:J~-I::>t'l~t!JmOJ (vi)EnvrionmentConcernsTheEnvironmentalconcernsfortherailroadarethesameasfortheroadway.TheprimaryareaofenvironmentalconcernisnearStephanandFogLakes2-RdoesencroachontheborrowareaHforWatanaDam.(vii)SegmentSuitabilityIfRailroadischosenforaccessthissegmentisquitesuitable.Therearehowevercertainscheduleconstraintstobeconsidered.TheCheehakoCreekbridgeisatwoyearconstructionproject.TheportionofroadbedfromDevilCanyontothePrairieCreekdivideis,toalargeextent,arockexcavationprojectrequiringextensiveblasting.Thissectionalonewilltakeaconstructionseason.TheterrainsouthoftheSusitnamakeswintermobilizationverydifficultifnotimpossible.Summersupplywouldrequire'extensiveroadsandresultingenvironmentaldamage.ItappearsthatconstructionofrailaccesstoWatanawouldrequirethreetofouryears.(t)Segment2-RR(I)DescriptionThissegmentisanalternaterailroadalignmentintheStephanLakeareawhichavoidstheworstsoilsconditionsofSegment2-Rinthisvicinity.SeeFigure9.9.Lengthofthesegmentis13.6miles.r25/d9-45 "-_"\1i.:"lc,.-r-f-~r-uwm0::-,00UI0:m:I:Q,•r-uW(l'Jzl"'I-~:::lUo:~<t0:3'\"a<,.f-IIU0II'"ua,U<0::w1«00:w.JU,\v:!l"iOi,W0:?:0I _200:Ilito:N'"0-rIn\:J:20:..I-<t.....02:.::z2~If)f--u<tWCJenm:J:::I~wmCJwm;}\/~.0 • (ii)LineandGradesThealignmentconformstotherequiredparametersforlineandgradewithnodistinctadvantageover2-R.(iii)DrainageFeaturesTherearenouniqueorspecialdrainagefeaturesonthissegment.Standarddrainagepracticewillserveadequately.(iv)BridgesNoBridgesarerequiredonthissegment.(v)SoilsThesoilsarepredominatelyfrozenBasaltillorLusterinesoverfrozenBasaltill.Thesematerialsrequirecareindesignandconstruction.Theyarecommontoallsegmentshowever.(vi)EnvironmentalConcernsAllenvironmentalconflictshavebeenidentified.Theyareessentiallythesameasfor2-R.(vii)SegmentSUitabilityThissegmentdoeshavesomeadvantageover2-RinthatitavoidstheworstoftheorganicsoilsnearStephanLakeandavoidsborrowareaHasdesignatedforconstructionofWatanaDam.r25/d9-47 (u)Segment3-A(i)DescriptionSegment3-AbeginsatWatanaDamonthenorthsideoftheriver.ThealignmentproceedsnortheasterlytoDeadmanCreekthenascendsDeadmanCreekonaneasygradepastDeadmanLake,continuingontoButteLakeandconnectingwiththeDenaliHighwaysome40mileseastofCantwell.SeeFigure9.10.Thelineis38.5mileslong.(ii)LineandGradeThehorizontalandverticalalignmentofthissegmentareexcellent.(iii)DrainageFeatureAllstreamsandintermitentdrainagesonthisalignmentcouldbeservedbyculvertsofvaryingsizes.(iv)BridgesTherearenobridgesonthisalignment(v)SoilsThesoilstraversedalongthisalignmentareunfrozentill,frozenSolifluctiondeposits,floodplaindeposits,alluvialfansandLusterines.Thecrossslope,withfewexceptionsaregentleenoughsothatmajorcutsandfillscanbeavoided.Thiswillkeepthedisturbanceoferodibleand/orfrozensoilsr25/d9-48 toaminimum.Theneededborrowareastoprovideembank-mentoverfrozensoilswillbemuchlessthanforotherseg-mentsdiscussedsofar.(vi)EnviornmentConcernsTheenvironmentalconcernsidentifiedtoincludearchaeologicalfindsnearDeadmanandButteLakes.AknownBaldEaglenesttree,andthefactthatmuchofthelinetraversesareassometimesusedbytheNelchinaCaribouherdascalvinggroundsandsummerrange.(vi)SegmentSUitabilityThissegmentissuitableforroadwayconstruction.Theterrainisgentleenoughthatbyusingmulitplecontractsandwintermobilizationthisentirealignmentcouldbemadepossibleinasingleconstructionseason,the'rebyminimizinganypotentialscheduleimpactonconstructionofWatanaDam.(v)Segment3-B(i)DescriptionThissegmentleaves3-AatDeadmanCreekandproceedseastintotheWatanaCreekdrainage.ThelineproceedsupWatanaCreektoitsheadthenfollowsButteCreeknortheasterlytoanintersectionwiththeDenaliHighwayattheSusitnaRiver.SeeFigure9.10.Thislineis36.6mileslong.r25/d9-49 (ii)LineandGradeAlldesiredparametersforlineandgradearesatisfied.(iii)DrainageFeaturesNoabnormaldrainagefeatureareencounteredalthoughcrossingsofDeadmanCreekandButteCreekarerequired.Thesewillnecessitatesmallbridgesorlargepipestructures.(iv)BridgesAtthistimenobridgesareplanned.ThecrossingofDead-manandButteCreekcouldbeaccomplishedusingPipearchstructuresthataremuchfasterandmoreeconomicalthanbridges.(v)SoilsThesoilsalongthisalignmentaresimilartothosesencounteredalong3-AexceptthatmorewetgroundisencounteredastheDenaliHighwayisapproached.Thesoilsalongthislinewerenotmappedindetail.(vi)EnvironmentalConcernThisalignmentalsoservesknownCariboucalvinggrounds.(vii)SegmentSuitabilityThissegmenthasbeendeteminedtobelesssuitablethat3Aor3Cforthefollowingreasons.oThecrossingsofDeadmanandButteCreeksr25/d9-50 oIntersectsDenaliHighwayfurtherstfromthepotentailrailheadatCantwell,therebyincreasinghauldistanceandthelengthofDenaliHighwaytobemaintained.(u)Segment3-C(i)DescriptionThissegmentleaves3-AnorthofDeadmanLakeandtravelsnortherlytointersecttheDenaliHighwaywestofSeattleCreeksome25mileseastofCantwell.SeeFigure9.10.Thissegmentis23.4mileslong.(ii)LineandGradeThelineandgradeforthislineareexcellentcomparingfavorablywith3-A.(iii)DrainageFeaturesDrainageforthealignmentwillbebyroadsideditchesandstandardculverts.(iv)BridgesNoBridgesarerequiredonthealignment.(v)SoilsThissegmentshowsthelargestamountsofunfrozenmaterialsofanylineinvestigated.Becauseofterrainandsoiltypesnearlyallofthisalignmentcanbeconstructedwithsideborrowtechniquesrequiringaminimumofdisturbanceawayfromthealignment.r25/d9-51 ....I f""."J "<."1 ..r~.,' MO""IT~,n tt;!,..... ALASKA POWER AUTHORITY SUSITNA HYDROELECTRIC PROJECT gV~L _ n&-M CONSULTANTS,INC.J _~:~~,_C-l .............'..a .."' , '" (vi)EnvironmentalConsiderationsThislineavoidsmostoftheareaidentifiedascariboucalvingarea.Summercaribourangeistraversed,howeverlittleotherenvironementalimpactisidentifiablefromconstructionactivities.(vii)SegmentSuitabiltiyThissegmentappearstobequitesuitableforimplementation.Itlargelyavoidstheprincipleenvironmentalconcernper-tainingtocariboucalving.Itcanbemadepassableinasingleconstructionseasonanditrequirestheleastmain-tenanceontheDenaliHighway.9.3-CorridorSummaryWiththevarioussegmentsidentifiedandestimates'madeofgradesandcurvatureaseriesofprobablecombinationsweredevelopedandcompared.Thecriteriausedtocomparethealternativecombinationsareasfollows:oooOveralllengthtobeconstructediAveragegrade;Averagedeflectionpermile.ThetabulationofthecomparisoninincludedinAppendixA.Thealternativesidentifiedasbeingmostfavorablebasedonlength,alignmentandgradeareasfollows:r25/d9-53 ForCorridor1.ParksHighwaytoWatanaDamsite-NorthsideSegments1-Aand1-8.OverallAverageGradeDeflectionPerMile72.50Miles2.4%7°06'+ThisCorridorwillbeidentifiedasAlternateAinfurtherstudies.ForCorridor2.ParksHighwaytoWatanaDamSite-SouthSideSegments1-E,2-L,2-1,2-G,2-8,2-A,2-FOverallAverageGradeDeflectionPerMile62.03Miles2.2%7.0500±ThisCorridorwillbeidentifiedasAlternate8infurtherstudies.ForCorridor3.WatanaDamtoDenaliHighwaySegment3-Aand3-COverallAverageGradeDeflectionPerMile44.32Miles1.3%1°30'±ThisCorridorwillbeidentifiedasAlternateCinfurtherstudies.ForRailroad.Use2-Rand2-RRonthesouthsideoftheriverfromGoldCreektoWatanaDamsite.ThiscloselyfollowsthepreferredroadalignmentforCorridor2.OverallAverageGradeDeflectionPerMile57.86Miles1.5%5°11'±ThislinewillbeidentifiedasAlternateRinfurtherstudies.r25/d9-54 >-..."'(/)0W:I:>"!...u(/)i=OJ"(/);;..w..u'"'".-uzw;Ua::;;0..w0"f-0Q.,f-..J"U....'"wzV>....,0i..0~a::i=i...a.«! 'ul,;:0.~..J1~~rcc~a~a~"~•a~u~z"wu>••w~"ww•"z~a~~w.,a•w"~w•wz""~aI .:: f' -I'? ....J 1'I;~ ,- .'''-'..f1 ,......:-1".(...fl" '."\> ,1~·;Zi ;'",,"', --.. .rl"'O::- .~ y'71''- ,.. \0 ~;.,. '--;..-;,~ ~·'·'l·:;---.-·tJ.';';~l'.,.... " (I ) .-~. ~ ~-;~. .--,'''' ;,', ,..t.-/~_.;,/.¢.~"", .i"',~\,... .~ -J.d ' '.j ." ,.--,:.I' ~iS:-';.;~'7 \-1-:---'- .(;'~/'I;....;"'J~~,~\ 'j."•..IJ 6 ../y'.,-.......,.til),~_J'/"ld''I'~,:r---:~;.,,~..I'~"..,~et.c>'.' //"%",--·.c."" 1';1.j '4'~''Y:Ct::.::..cr";'/-~J:-:';·'t;::=.-__'::""~l..' ,,,tT I//).,r-J&.C _'LT~_'- .! /3,\". -;.; /., n '.(1 ¥c'Q I ". "..:. e!9 ~ "\ S'i' •..0 I GRAPHIC SCALE IN MILES ACCESSPLANS 10-ACCESSPLANSTheAccessplanselectedshouldprovideacosteffectivemethodofservingthetotalrequirementsoftheproject,includingconstructionschedule,provideafacilitythatcanservetheultimaterecreationalusesfollowingconstruction,provideformaintanceofthefacilities,andcontrolorminimizetheimpactontheenvironment.10.1-SupplySourcesandShippingOptionsNearlyallmaterialsuppliesandequipmentthatwillberequiredforconstructionoftheSusitnaprojectwillhavetobebroughtinfromoutsideAlaska.Themajorexceptiontothisisfuelwhichisavailablefromtwoseparateinstatesources.ForthisreasonanassumptionhasbeenmadethatallsuchitemsotherthanexplosiveswillbeshippedfromSeattle,Washington.ExplosivewillbeshippedthroughPrinceRupertB.C.ItisfeltthatthisisreasonableinthatsourcesofsupplyandtransportationwithintheContinentalUnitedStateswillbeidenticalforallalternativesandthatdifferencesinshippingcostswillresultfromPortofEntryintoAlaskaanddifferencesinmodalsplitandroutetraveledwithinthestate.SourcesoffuelwithinthestatearetherefineriesatKenaiandatNorthPole,Alaska.TransportfromKenaiwouldbeviaproductpipelinetoAnchorageandrailortruckfromAnchorage.TransportfromNorthPolewouldbeviarailortruck.Shippingoptionsincludeavarietyoftransportationmodes.ThereisnodirectrailconnectiontoAlaskathereforeallitemsbroughtinfromelsewheremustcomebyseaorair.AirTransportwillnotbeadressedbecauseofthecostsinvolvedandthelimitationonquantities.Shipsandbargeswillbemostlikelybeusedtobringr26/a10-1 mostitemstoAlaska.Truckscouldbedisparitybetweenseaandtruckingunattractive.Thebargesoffersomeconnectinglandtransportationmodes.usedIhowevertheratemakestruckingveryoptionswithregardtooooooRoll-onRoll-offRailCarsRoll-onRoll-offTrucksContainersPallatizedCargoBulkCargoThetypeandquantitiesofmaterialsandsuppliesrequiredbytheprojectaresuchthattheroll-onroll-offmodesandcontainersaretheobviouschoicebecauseofthereducedneedforstorageandhandling.OncethematerialsareinAlaskatheshippingoptionsarereducedtorailortruck.Railcanofferbulkcarloadtransportorpiggybackfromthedocktotheprojectrailhead.Trucksarecapableofmovingeverythingfromeitherthedockortheprojectrailhead.10.2-AlaskaPortsTheseaportswithinAlaskathatcouldservetheprojectare:0Anchorage0Seward0Whitter0Valdez(a)Anchorager26/a10-2 0)FacilitiesooooooPetroleumTerminal-612feetlongwithmultiplemanifoldsandelectrichosehandlinghoists.GeneralCargoTerminal#1-600feetlong-47feetwide.Liveload600poundspersquareinch,Containers.GeneralCargoTerminal#2-610feetlong-69feetwidecontainersandBulkCement.GeneralCargoTerminals#3898feetlongRoll-onRoll-offtrucksandcontainers-35feetofwaterMLLWasthedockface.Cranes2-40TonLevelLuffingGantry1 -7\TonLevelLuffingGantry2 -271:;TonContainerCranesooTransitShed52,950squarefeetceiling-heated-Railandtruckaccess.StagingandStorageAreasA -4.6acresB -6.4acresC -6.7acres22-footOi)Limitationsr26/aoCookInletdoesformheavyicefloesduringthewintermonths.Tidalfluctuationskeeptheicebrokenup,howeverthereareperiodicproblemsforshippingduetowinterice.10-3 o(b)SewardThereisnoprovisionforroll-onroll-offrail.(i)FaciIitiesooooOnegeneralcargodockcapableofhandlingasingleship.Asingle40tonlevelluffinggantry.Truckandrailservicetothedock.20acresopenstorage.(ii)Limitationsooo(c)WhittierNocoveredstorageLimitedcapacityNomovementofexplosiveallowed(i)FacilitiesooSingledockwithroll-onroll-offrailcapacityRailswitchyardforstoringcarsfrombargeandmakinguptrain.(ii)Limitationo(d)ValdezNotruckaccess(i)Facilitiesr26/ao600'X60'woodendock10-4 to1-footofduringtheoooooooooo33-footofwaterMLLWatthedockface1 -150toncrawlercrane1-100tonforklift2-30tonforklifts3 - 9tonforklifts5 - 3tonforklifts200acreopenstorageareafourmilesfromdock12,000squarefootwarehouseatdockTwoprivatebargedockshaving0-wateratMLLW.BothwereusedTrans-Alaskapipelineconstruction.Newdockunderconstructionisafloatingdock700'x100'withliveloadcapacityof1,000Ib./sq.ft.andservedbytwo150toncrawlercranes.Workshouldbecompletedin1982.(ii)LimitationsoNorailroadaccess(e)ComparisonsAnchorageisclosesttotheprojectandhasthegreatestflexbility.Wintericeandthelackofroll-onroll-offrailcapabilitynotwithstandingAnchorageisaviableseaportfortheproject.SewardisalongerhaulthanAnchorageanddoesnothavethecapacityofAnchoragehoweveritisanicefreeportandcouldbeusednicelyasanalternateshouldiceconditionsorvolumeoftrafficbecomesuchthattherewouldbedelaysinreachingAnchorage.ForthisreasonSewaredisnotcon-sideredfurtherexceptasanalternateifneeded.ItmustbenotedthatexplosivescannotflowthroughSeward.r26/a10-5 Whitterisaviableportforallitemsthatcanbeshippedviarailcarloadlots.Theroll-onroll-offrailbargecapabilityisveryattractiveforbulkitemsandheavyequipment.Whitterisanicefreeportsothatmaterialcanflowyearround.ValdezapparentlywillhavethecapacitytohandlethematerialflowhoweverthisisthelongesttruckhaulandthereisnorailaccesstoValdez.The'lackofrailacessandthelengthoftruckhaulcombinetoeffectivelyeleminateValdezfromconsiderationasaviableseaporttoservetheSusitnaProject.TABLE10.1MileagefromPortstoRailHeadorProjectAnchorageSewardWhitterValdez*RailHaultoGoldCreek149mi262211NADevilCanyon165mi278227Cantwell205mi318267NAWatanaviaDevilCanyon207mi320269TruckHaultoGoldCreek,viaB-1180307NADevilCanyon193320NA393miCantwell212339NAWatanaviaDevilCanyon,229356NAB-3WatanaviaDenaliHighway277404NA349miWatanaviaDevilCanyon,234361NAA-2*TheroadmilagefromValdezisshownviaDenaliHighwayandRichardsonHighwayandCorridor3.r26/a10-6 Theaccessplansmustincludetheportsthroughwhichmaterialsshouldflow.Forcomparisonpurposesshippingratesthroughthepossibleportswererequested.Table10.2belowincludes"acrossthedock"costsincludinghandlingasderivedfromthedatasuppliedbyportofficesandshippers.TABLE10.2ACROSSTHEDOCKHANDLINGCOSTSCostin$/TonMaterial(1)To(2)To(4)To(1)ToFromSeattle(6)AnchorageSewardWhittierValdezReinforcingSteel72.0072.0055.0086.00StructuralSteel85.40 85.4055.00125.00Cement66.0066.00(3)55.0080.00GeneralCargo80.0080.0055.00110.00Equipment160.00160.00120.00191.00Explosives89.00NotAllowed55.00115.001QuotedbyPacificWestern.2Informationnotreceived-EstimatedequaltoAnchorge.3Ratefor140,000IbHopperCars-RatesforBags100.00/tonasperARR.4RatesderivedfromquotionbyARR.5IncludesStevedoringatallports.6ExplosivesmustflowthroughPrinceRupert,B.C.10.3-SurfaceTransportationModalOptionsTherearetwoobviousmodesoftransportationavailabletoservetheproject,TruckandRail.Theprojectmaybeservedbyeitheroneoracombinationofboth.Inordertocomparethetwomodestherespectiveratesarepresentedinton-milefigures.Inthiswaylengthofhaulmaybeconsideredintheanalysis.r26/a10-7 TABLE10.3LINEHAULRATESIN$/TON-MILEItemRail*Truck**Equipment0.18780.2069Steel0.25770.2069Cement0.15650.2069Fuel0.14500.2069GeneralCargo0.12620.2069Explosives0.62670.2069*Frompriceper100Lb.ratesquotedbyARR.i,,~Onerateforallquotedbythreeseparatetrucklines.Thecostshownisanaverageofthreerates.Themodalalternatesthatseemmostprobableincludethefollowing:oooTruckfromporttothesite.Railfromporttothesite.RailtoGoldCreekorCantwellandtruckfromtherailheadtothesite.10.4-AccessPlansTothispointthreealternativeCorridorshavebeendefined.Estimateshavebeenmadeoftheamountsofmaterialsrequiredateachsiteandfreighthandlingcostshavebeenidentifiedfortheavailabletransportationmodesandports.Thethreemajorcostspertainingtoaccessarelogistics,constructionandmaintenance.Estimatedconstructioncostsareoutlined.Maintenancecostswillnotbeestimatedindetail.Instead,anestimateoftherelativer26/a10-8 differenceindifficultyofmaintenancewillbeappliedtoanaveragemaintenancefigureof$10,000permileperyear.AlaskaDepartmentofTransportationandPublicFacilitiesrecordsshowanaverageannualmaintenancecostof$10,000permileforprimaryhighways.TABLE10.4MAINTENANCEFACTORSMaintenanceSectionFactor*A-1ParksHighwaytoPortageCreek1.0PortageCreek-DevilCanyon1.4A-2DevilCanyon-Watana1.0B-1ParksHighwaytoGoldCreek1.0B-2GoldCreektoDevilCanyon1.2B-3GoldCreektoStephanLake1.3StephanLaketoWatana1.0CDenaliHighwaytoWatana0.8R-1GoldCreektoDevilCanyon0.5R-2DevilCanyontoStephanLake0.7StephanLaketoFogCreek0.6*Basedanauthor'spastexperience.Thealternatecorridorsidentifiedhereinaresplitintosectionsforfurtheranalysis.Thosesectionsareasfollows:r26/a10-9 SectionA-1A-2B-1B-2B-3CR-1R-2TABLE10.5BASICCORRIDORSEGMENTSDescriptionParksHighwaytoDevilCanyon(northside)DevilCanyontoWatana(northside)ParksHighwaytoGoldCreekGoldCreektoDevilCanyon(southside)DevilCanyontoWatana(southside)DenaliHighwaytoWatanaGoldCreektoDevilCanyonDevilCanyontoWatanaTheaccessplansoutlinedbelowaremadeofcombinationsoftheabovelistedcorridorsegments.(a)Plan(i)DescriptionAccessPlanIisabasicroadwayplanbeginningattheParksHighwayandservingbothDevilCayonandWatanadamsfromthesouthsideoftheriver.SeeFigure10.1.Oi)SeaPortsTherearetwoseaportsthatappearlogicalforservingtheproject.AnchorageandWhittier.Thesearecommontoallaccessplans.SewardisavailableasanemergencybackuptoAnchorage.AllitemsthatcanbeshippedincarloadlotsIshouldentertheStatethroughWhittierbecauseoftherailbargefacility.InformationprovidedbyrailroadofficialsindicatesthatthisfacilitycanhandleanyrailloadthatcanbeshippedonmainlinetrackageinthecontinentalUnitedr26/a10-10 Statesandfitonthebarge.OthercargoshouldbecontainerizedforshipmentthroughAnchoragebecauseofportcapacityandavailableareaforshorttermstorage.(iii)ModalSplitThesplitintransportationmodesisconsistantthroughallplans.Basedontonmilefreightcosts,therailroadshouldbeusedtoasneartheprojectaspracticalforallitemsexceptexplosives.ThereforetherailmodeshouldbeusedforallitemstoarailheadatGoldCreek.ForPlanI,arailheadshouldbeprovidedatGoldCreekwithtruckhaulfromGoldCreektotheworksite.(iv)SectionsIncludedThecorridorsectionsincludedinPlanIincludeB-1,B-2,andB-3.(v)CostEstimatesTheestimatedcostofPlanin1982dollarsisoutlinedbelow:Construction(D&C)$158,140,152Maintanance7,996,640Logisties214,438,346TOTAL380,575,138(vi)Advantages/DisadvantagesThisplanhastheadvantagesofbeingtheshortesthaultoservetheprojectandafurtheradvantageofrequiringjustasinglerailheadatGoldCreekwhileutilizingthesamesectionfromGoldCreektoDevilCanyonthroughouttheconstructionofbothdams.r26/a10-11 ·..U:~.t .. LEGEND CORRIDOR I ALTERNATIVES CORRIDOR 2 ALTERNATIVES CORRIDOR 3 ALTERNATIVES RAILROAD CORRIDOR ROAD RAILROAD 'J ,I AUTHORITY SUSITNA HYDROELECTRIC PROJECT ACCESS PLAN #.. ALL·ROADS OWN.•P.T. CKD. APPVP " Disadvantagesdealprimarilywithscheduleconstraintsandpotentialenvironmentalimpacts.TheplanincludesamajorbridgeaboveCheechakoCreekthatwilltake18-24monthstoconstructwithabouttwelvemilesofheavyrockconstructionimmediatelybeyond.TherockworkwillbeslowworkandthereisnoeasyaccessaroundCheechakoCreektoallowtherockworktoproceedcoincidentwiththebridge.Inaddition,asimilarbutshorterbridgeisrequiredatFogCreek.TheFogCreekbridgewillrequireapproximately18monthstoconstruct.Thesetimeconstraintscombinedwiththelengthoffacilitytobeconstructedwillrequireanoverallconstructionperiodofnearlyfouryears.Theterrainissuchthatconstructionofmultiplesectionssimultaneouslywouldnotbepractical.Recentsoilsinvestigationshaverevealedmassiveiceatornearthesurfacewithupto20feetoforganicsoilsintheareanorthofStephanLake.(b)Plan2(i)DescriptionThisplanistherailroadalternativetoservebothdams.AspurtrackwouldbeconstructedbeginningatGoldCreekandfollowingthesouthsideoftherivertoWatanaDam.Therewouldbenoroadwayinvolvedwiththisplan.SeeFigure10.2.(ii)SeaPortsAnchorageandWhittierwouldbetheobviousseaportsforthisplan.TherailbargecapabilitiesofWhittierwouldbevitaltothisplan.r26/a10-13 (iii)ModalSplitTransportationwouldbeessentiallysinglemodewithallmaterialbeingtransportedfromthedocktothejobsitebyrail.Themovementofpersonnelwouldbebyrailorbyair.Thevolumesofpersonnelwouldprobablydictatepassengertrainservice.Thisservicehasnotbeenincludedinthecostestimates.(iv)SectionIncludedThisplanincludesSectionsR-1andR-2.(v)CostEstimatesTheestimatedcostofPlan2in1982dollarsisoutlinedbelow:(vi)Construction(D&C)MaintananceLogisticsTOTALAdvantages/Disadvantages139,786,7553,549,670213,620,014356,956,439r26/aoooooThisplanappearstobetheleasttotalcostalternateforservingtheproject.Thisplanessentiallyeliminatesconcernabouttheimpactofpublicaccesstotheprojectarea.Theraillinecouldbeusedasatransportationfacilitytoaidinpotentialmineralresourcesalongpartoftheroute.LeastcosttomaintainLeastLogisticscost10-14 " .;. .q:'I'.t.-: PT. CKD, APPV'o OWN, ALL RAILROAD, LEGEND SUSITNA HYDROELECTRIC PROJECT ALASKA POWER AUTHORITY ACCESS PLAN #'2' CORRIDOR I ALTERNATIVES CORRIDOR 2 ALTERNATIVES CORRIDOR 3 ALTERNATIVES RAILROAD CORRIDOR ROADIL~ilJ I.·R'AILROAD ~-I~':: p,{l£kk.:s:;I I '(''",',-~.. l!'.,.;l........,··w ,,.:,./• I==I&M CONSULTANTS,INC. ......'0 ..0 'on.'" ~-------- ~(If~~I"If ~';'fl~''''TY =I.)i a?J_(7:::t*)~.):_ oooooAsignificantdisadvantageisthatthelinemustbebuiltlineallyratherthaninsimultaneoussections.AnotherdisadvantageisthemajorbridgeatCheechakoCreek.Thisalsoisan18-24monthconstructionproject.ThesectionofheavyrockconstructionisevenmoreseverethanforPlanIbecausegradesholdthelinedownfurtherontheslopeinthecriticalsection.TheiceandorganicsoilsproblemsnearStephanLakewouldhavemoreimpactontherailroadthanonaroadway.AswithPlanI,constructiontimewouldbethreetofouryears.(c)Plan3(i)DescriptionThisplanusesacombinationofrailandtruck.ConstructionofWatanaDamwouldbeservedfromarailheadatCantwellbytruckacrosstheDenalihighwayandalongAlternateC.ConstructionofDevilCanyondamwouldbeservedbytruckfromarailheadatGoldCreekwithroadaccesstoParksHighway.Thisplandoesnotincludeaconnectionbetweenthetwodams.SeeFigure10.3.(ii)SeaPortsCommontoallplansareAnchorageandWhittier.(iii)ModalSplitThisplanrequiresrailheadsatGoldCreekandatCantwell.Materialswouldmovefromporttorailheadviarailroad,ber26/a10-16 transferedtotrucksattherailheadandbehauledtotheworksitebytruck.Themovementsofconstructionworkerswouldbeviaprivateautodirecttotheconstructioncamp.(Iv)SectionIncludedThisplanincludesSectionsB-1,B-2andC(v)CostEstimatesThisplanisestimatedtocostasfollows:Construction(D&C)IMaintananceLogisticsTOTAL(vi)Advantages/DisadvantagesTheadvantagesoftheplanare:156,509,7466,142;720228,050,607390,703,073r26/aooooItutilizesSectionCwhichistheonlyapproachtoWatanathatcouldbecompletedsufficientlyinoneseasontoallowresupplyofconstructionactivitiesatWatana.Personnelaccessviaprivateauto.Nomajorbridgesnecessaryformovementofconstruc-tionmaterials.SegmentsB-1andB-2includingtheSusitnaRiverBridgecouldbebuiltduringtheperiodofconstructionforWatanatherebyeliminatingthetimeconstraints.10-17 , ··f,~ / r~'; ) !. ACCESS PLAN #'3 !=I&M CONSULTANTS,INC.I eKD.~.I.""''''••''.UHI~O<>'.'"...-..........".......~."...APPV'Q ,'''''jf:';~-.\..~-...~,_.--_.".~;:_" ,,~:.I<I 'iftP-,~'-I ,.~~h./..--=-+~·I ~ "I 0.LEGEND ...•".............CORRIDOR (ALTERNATIVES _______.CORRIDOR 2 ALTERNATIVES )CORRIDOR ~AI.TERNATIVES ------RAILROAD CORRIDOR ROAD ".v.<"I I I'RAI LROAD: f,.'r,:,.~'j;[-..,~>~'Ilc.rY·"\"7.-'~I.riJ~~.Y:~:;"1.:~i-,:(o.h -. :::;:~":I:L _[RPDIQ I ALASKA POWER AUTHORITYnundSUSITNAHYDROELECTRICPROJECT ._-ROAD-PARKS'-HWY,TO 'DEVII;·CANYON ·ROAD ~""·);f~'·~!','.'" .~•_....1 •"ROAD-DENALI HWY,·TO WATANA·.'. ,,~I OWN.~p.T.7'-/....i::;<;:-;;;r:c-"--~JJl.~'"r.t .., .u·,J~·".;\~~~./'~;":4<i;:;;~ .C J\(•..~,;;:----'".l.:''''''-1-"'>•/'r_.'~"'"I"-t""~.,..,.,._,'. I ~:.'" Thedisadvantagesoftheplanare:ooPotentialenvironmentalimpactsresultingfrompublicaccesstoadditionalportionsoftheNelchinaCaribouRange.Lackofdirectaccessbetweendamsformaintenanceandoperationsstaff.(d)Plan4(i)DescriptionThisplanservesWatanabytruckfromarailheadatCantwellandDevilsCanyonbyrailfromGoldCreek.Intheplanthereisnoconnectionbetweendams.(ii)SeaPortsThesameseaportsarecommontoallplans.TheyareAnchorageandWhittier.(iii)ModalSplitThisplanwouldrequirerailservicetoCantwellviaeXistingtrackagewithconstructionofarailheadatCantwellandtruckservicefromCantwelltoWatana.DevilCanyonwouldbeservedbyrailonlyfromGoldCreekwiththesecondrailheadattheDevilCanyondamsite.Allmaterialwouldflowbyrailtotherailhead.PersonnelaccessforWatanawouldbeviaprivatevehiclewhilerailshuttleservice,probablyfromHurricane,wouldberequiredforDevilCanyon.r26/a10-19 (iv)SectionIncludedThisplanwouldrequireconstructionofSectionsCandR-1(v)CostEstimatesTheestimatedcostofPlan4in1982dollarsisoutlinedbelow:Construction(D&C)MaintananceLogisticsTOTAL(vi)Advantages/DisadvantagesTheadvantagesofthisplaninclude:124,129,3104,750,630228,004,342356,884,282oooGoodcompliancewithrequiredprojectschedule.SectionsCtoserveWatanacanbeconstructedsufficientlytoallowresupplyinoneseasonusingmultiplesimultaneouscontractsforshortenedsectionswithprimarymobilizationviawintersnowroad.Nomajorbridges.Thedisadvantagesinclude:r26/aoooPotentialimpactfrompublicaccess.NeedforrailshuttletomovepersonnelintoDevilCanyon.Nodirectconnectionbetweendamsformaintenanceandoperationsstaff.10-20 RAIL ,TO DEVIL CANYON ROAD TO WATANA· ~ ~ :z:; ,1.0' :2.. j_"J'", '..\.(,,:~..... AUTHORITY r I',/. CORRIDOR I ALTERNATIVES CORRIDOR 2 ALTERNATIVES CORRIDOR 3 ALTERNATIVES RAILROAD CORRIDOR ROAD RAILROAD LEGEND SUSITNA HYDROELECTRIC PROJECT 'Jr:~~D~~~~~~~~~~~~~~D~W~NE·i~p.~·T.~·r-l~.~VL.,~R&M CONSULTANTS,INC.eKD, .....'uoc'""',.",,'~APPV'p (e)Plan5(i)DescriptionThisplanservesbothdamsbytruckfromarailheadatGoldCreek.ThesouthsideoftheriverisusedtoDevilCanyonwithamajorbridgedownstreamfromthedamsite,thenthenorthsideisusedtoWatana.AroadwayconnectiontotheParksHighwayisincluded.(Ii)SeaPortsThisplanutilizedAnchorageandWhittierasdotheotherplanspresented.(iii)ModalSplitRailhaultoGoldCreekwithasubsequenttruckhaultotheworksite.Personnelwouldaccessthecampsviaprivateauto.(iv)SectionsIncludedTheSectionsthatwouldbeincludedinthisplanareB-1,B-2,andA-2withbridgesovertheSusitnaRiver.r26/a10-22 (v)CostEstimatesTheestimatedcostsofthisplanareoutlinedbelow:HighSusitnaBridge(D&C)Construction(D&C)MaintananceLogistics13,260,000128,420,4527,504,800215,571,641TOTAL364,756,893*HighBridgeCost:2,600ft.x34ft.x$150/sq.ft.(vi)Advantages/DisadvantagesTheadvantagesofthisplanare:ooThesegmentsinvolvedencountertheapparentminimumofenvironmentalconflicts.Personnelaccessisviaprivateauto.Thedisadvantagesinclude:r26/aoooArequirementfortotalconstructionoftheaccesspriortobeingabletoresupplyconstructionatWatana.TherequirementtoconstructahighbridgeovertheSusitnabelowDevilCanyon.Thiswouldbeasuspensionbridgeandwouldrequiretwotothreeyearstoconstructthuspreventingworkbeyonduntilthebridgecouldbecrossed.Thetimefromtheconstructionofthisplanwouldbethreetofouryearswiththeassociatednegativeimpactsontotalprojectschedule.10-23 '[iiJ-----=,~~,.UI ALASKA POWER AUTHORITY .. ?"•.:-W',"J~~Il~SUSITNA HYDROELECTRIC PROJECT ACCESS PLAN #5 I ALL,,ROAD ,HIGH DEVIL ,CANYON BRIDGE' OWN,t P.T. CKD, APPVP (f)Plan6(i)DescriptionThisplanisessentiallythesameasPlan4exceptthatasecondaryroadisprovidedalongthenorthsidebetweenthedamsforusebythemaintenanceandoperationsstaff.ThisplanwouldusethetopofDevilCanyonDamforacrossingratherthanconstructingabridge.(Ii)SeaPortAswithallplans,theseaportswillbeAnchorageandWhittier.(iii)ModalSplitThisplancontemplatesrailhaultoCantwellwithtruckhaulfromCantwelltoWatanaanddirectrailhaultoDevilCanyonvfaGoldCreek.PersonnelaccesstoWatanabyprivateautoandDevilCanyonbyrailshuttle.(iv)SectionIncludedTheSectionsincludedareA-2,R-1andC(v)CostEstimatesTheestimatedcostoftheplanisoutlinedbelow:Construction(D&C)183,240,606Maintanance7,638,130Logisties228,004,342TOTAL418,883,078r26/a10-25 -'-..--.I l~~'~ ,p'•-,'I •,:A~"'"~-r'",;r.'.§ll4)SY _'.c',","",,:.('"v>~)JO d ....--"-_"r 1 j .. SUSITNA HYDROELECTRIC PROJECT ACCESS PLAN -#6 RAIL'·TO -DEVIL -CANYON 'ROAD FROM DENALI HWY:-TO ,¥".f;jj~_.:'.':WATANA '&"DEVILCANYON.-",:'.~~~~~~~~~'~.~~'~~3~g--1•"~.I,~.,~f 1.:;:'•.."-:zr -~DJ~Ji\\I7l OWN,PT. ."C,...,.~.J.._• '~VL CKD.'~•.,'~,..>-:::-.,'""R&M CONSULTANTS,INC,'1''..,,,rl"".,,,,;',no••, •....N''..APpvb ,.~.\.L I ~'"'~. (vi)Advantages/DisadvantagesTheadvantagesoftheplaninclude:ooooGoodcompliancewiththerequiredprojectschedule.SectionCtoserveWatanacanbeconstructedtoapointthatwouldallowresupplyinoneconstructionseasonusingmultiplesimultaneouscontractsovershortsectionswithprimarymobilizationoverwintersnowroads.Nomajorbridgesinvolved.Directaccessbetweendamsformaintenanceandoperationsstaff.Thedisadvantagesoftheplaninclude:ooThepotentialimpactfromincreasedpublicaccess.TheneedforarailshuttletobringpersonneltotheDevilCanyonsite.(g)Plan70)DescriptionThisplanservesWatanabytruckfromarailheadatCantwell,DevilCanyonbytruckfromarailheadatGoldCreekwitharoadconnectiontotheParksHighwayandaroadconnectionbetweendamsnorthoftheriver.ThisplanwouldusethecrestofDevilCanyonforacrossingratherthanconstructingabridge.r26/a10-27 (ii)SeaPortsAnchorageandWhittierarethelogicalseaportsfor·thisplan.(iii)ModalSplitAllfreightwouldtravelbyrailtotheappropriaterailheadthenbytrucktotheworksites.Personneltravelwouldbebyprivatevehicle.(iv)SectionIncludedTheSectionsincludeB-1,B-2,A-2,Cwithrailheadcon-structionatGoldCreekandCantwell.(v)CostEstimatesTheestimatedcostofthisplanisoutlinedbelow:Construction(D&C)MaintananceLogisticsTOTAL(vi)Advantages/DisadvantagesTheadvantagesofthisplaninclude:215,621,0429,030,220228,050,607452,701,869r26/aooGoodcompliancewiththerequiredprojectschedule.SectionCtoserveWatanacanbeconstructedinoneseasonsufficienttoallowresupply.10-28 oooTheonlymajorbridgeisovertheSusitnaRiveratGoldCreekandisnotontheprojectcriticalpath.Directaccessbetweendamsforthemaintenanceandoperationsstaff.Allpersonnelaccessviaprivateauto.Thedisadvantagesofthisplaninclude:or26/aThepotentialimpactsfrompublicaccess.10-29 .. ''l~''J,I''1I'• )~1~/- p.T. CKD. APPVP DWN. LEGEND ACCESS PLAN 117 ·ALl!·ROADS· {11~ .~R&M COLN-S-U-L,;-:r-A-N-T-S-,-IN-C-.I ..................u~O"',.'"11'~ .•~:Li .7P.1rT-~,1 t+;-;--- ...................CORRIDOR I ALTERNATIVES CORRIDOR 2 ALTERNATIVES CORRIDOR 3 ALTERNATIVES 'RAILROAD CORRIDOR •I'ROAD l',:S~E'&:~RAtLROAD .r:. "7"J?:--j;~~r .,;""':i!'._.......~"'".'"",",-~)\.I I',,.'1 o·•~..,~,•Go .:?;""/,,;.;.··r.,-,.'.',J ,'i ,.----.~'J..".,....c....~"'...>".r.).... ,.../1'IIPom I ALASKA POWER AUTHORITY --~i;j;~iji'~-~~~,~~;;,HhOm SUSITNA HYDROELECTRIC PROJECT --.•!'~'~'~'~--'~Wl-."....·K'.···.,..f"c:,',~. ,;.,'....:,,{~l.',.~0"" rd=--. .11.J-'.-""..'1Jo:.-""/~:...~:,.••:",aoa/_~ (h)Plan8(i)DescriptionThisplanisesssentiallythesameasPlan5,exceptthatthereisnoroadconnectionbetweentheParksHighwayandGoldCreek.TheplanservesbothdamsbytruckfromarailheadatGoldCreek.ThesouthsideoftheriverisusedtoDevilCanyonwithamajorbridgedownstreamfromthedamsite,thenthenorthsideisusedtoWatana.Alltrucktractorswillinitiallyhavetobeferriedto··GoldCreekbytrain,than theywillbeabletoshuttlebetweenGoldCreekandthedamsites.(ii)SeaPortsThisplanutilizedAnchorageandWhittierasdotheotherplanspresented.(iii)ModalSplitRailhaultoGoldCreekwithasubsequenttruckhaultotheworksite.PersonnelwouldaccessthecampsviatraintoGoldCreek,thanbusshuttleontheroad,orbyair.(iv)SectionsIncludedTheSectionsthatwouldbeincludedinthisplanareB-2andA-2withonebridgeovertheSusitnaRiver.(v)CostEstimatesr26/a10-31 Theestimatedcostsofthisplanareoutlinedbelow:HighSusitnaBridgeConstructionMaintananceLogisticsTOTAL(vi)Advantages/DisadvantagesTheadvantagesofthisplanare:13,260,00078,327,7425,103,300215,571,641312,262,683ooooThesegmentsinvolvedencountertheapparentminimumofenvironmentalconflicts.Publicaccessisrestricted.LowestdesignandconstructioncostLowestoverallcosts.Thedisadvantagesinclude:r26/aooooArequirementfortotalconstructionoftheaccesspriortobeingabletoresupplyconstructionatWatana.TherequirementtoconstructahighbridgeovertheSusitnabelowDevilCanyon.Thiswouldbeasuspensionbridgeandwouldrequiretwotothreeyearstoconstructthuspreventing'workbeyonduntilthebridgecouldbecrossed.Thetimefromtheconstructionofthisplanwouldbethreetofouryearswiththeassociatednegativeimpactsontotalprojectschedule.Needtoprovidetransportationforpersonnelaccess.10-32 SUSITNA HYDROELECTRIC PROJECT ACCESS PLAN #8 ALASKA POWER AUTHORITY .1.,,,' 1 ,),. p.t CORRIDOR I ALTERNATIVES CORRIDOR 2 ALTERNATIVES CORRIDOR 3 ALTERNATIVES RAILROAD CORRIDOR ROAD RAILROA'o" ·..1.',. -------; ALL ·ROAD. HIGH DEVIL CANYON BRIDGE. r.~.'..:,~."';';7i'~I=~:;;;;::::-;:'N;:O=P=U=B=L=IC=H=IG=H=W=:ArYm'A;;:;-CCESS.,"".:.'..,,)5 ,.:.~.,~.I.~DWN, ";I~.·':.,'I-',.,:~.•",,,'~~CKD...."...".';~.•'..u-...if'.."~. '._~''''''''''/-',,,,,';-".,R&M CONSULTANTS,INC.~.•_Xi;.."«';7 "'~;:-<'f 0.0 "''''''''0...APpvpl I CONCLUSIONSANDRECOMMENDATIONS 11-ConclusionsandRecommendationsNofinalconclusionsorrecommendationsaremadeatthistime.Additionalinputisrequiredfromotherprojectteammembersbeforeafinalplanselectioncanbemade.r27/g11-1 .LN31NdOl31\30N~'S30A~\;IN'IN'l3~d\;IXION3dd\;l AppendixA -PreliminaryDesignDevelopmentTheSusitnaHydrolelectricprojectincludestwolargedams.Thesestructuresarelocatedinremotewildernesshoweverthesizeofthestructuresaresuchthatmajortransportationfacilitiesarerequiredtoservetheprojectandsmallcommunitiesareneededtohousetheconstructioncrews.Inordertodemonstratethemagnitudeoftheplanneddevelopmentplanviewsofthedamsareincludedasaretheprojectedconstructionschedules.Correspondenceisincludedthatidentifiesthemajorquantityrequirementsandcrewrequirements.Thisdatahasbeenusedinthedevelopmentandanalysisofthevariousaccessplans.r26/b1 c~.,I:r~,..-'"'.",,""~~').'R&MConsultantsInc.P.O.Box60875024CordovaStreetAnchorage,Alaska99503Attention:Mr.N.Gutcher~.~....'..~.'.'August20,1981P5700.11.10T.1078DearMr.Gutcher:SusitnaHydroelectricProjectEstimateofTotalWeightsAsdiscussedwithyouonAugust10,wehavemadeaninitialestimateofthetotalweightsofvariousmajoritemsneededforconstructionoftheSusitnadevelopment.Thesequantitiesshouldbeusedincompletingthelogisticsportionofyouraccessroadreportandareasfollows:c~...,.....+~:.;,;'Insta11edMechanical,Structural&ElectricalEquipmentConstructionEquipmentExplosives'CementReinforcingSteelRockBoltsSteelSupport&LinersFuel~i';~~:':S.:,:.:::;"'::lG.,:1,'~C:_:;lP(~H;\T::Q'....,.~,'Watana15,000ton16,000ton20,000ton350,000ton33,000ton12,500ton3,600ton75millionga11onsDevilCanyon13,500ton5,000ton3,000ton650,000ton22,000ton3,000ton2,200ton17millionga11ons ctk.N.GutcherR&MConsultantsInc.August20,1981Page2PleaseforwardyourcompletedreporttousbySeptember15.IfyouhaveanyquestionsorneedfurtherinformationpleasecontacteitherTomGwozdekormyselfatthisoffice.Sincerely,cfJ-l--~~~~~Co:..."/.I.:,;.,.•~:.:>-DM/ljrcc:J.LawrenceJ.HaydenJ.Gi11F.TothACRESAMERICANINCORPORATEDD.~1eilhede'. ,..."EXh'/d/TA·2......-..-.~II<.~'~"1J')1•I·....;i~I~!I':',:.\;!R&MConsultantsP.O.Box60375024CordovaStreetAnchorage,AK99503Attention:Mr.N.GutcherDearMr.Gutcher:September4,1981P5700.11.10T,1132SusitnaHydroelectricProjectProjectSchedule;;.',,-.1j::~.~Asyourequested,enclosedpleasefindthefollowing:1.PreliminaryScheduleWatana-July19812.PreliminaryScheduleDevilCanyon-July19813.MostRecentLayout-Watana(reducedDylar)4.MostRecentLayout-DevilCanyon(reducedDylar)Aswediscussed,theseitemsreflectthepresentlevel·ofdevelopmentoftheSusitnaProjectandcanbeusedincompletionofyouraccessroadlogisticsstudy.Finalizedlayoutsandschedulesare,ofcourse,impossibletoprovideatthistime.'Similarly,ourpresentestimateforpeakcampsizeis4,500unitsatWatanaand3,100unitsatDevilCanyon.Ifyouhaveanyfurtherquestions,pleasecall.Sincerely,,8.Vh/hA~;J~DennisMeilhedeDM:dbEnclosurescc:J.LawrenceJ.HaydenT.Gwozdek"C;,;oSAr,1ERICANINCORPORATEDC::ln.,Ullll'Of:rl,:neers7:~oJLI!)Qr!Yg.:l:1~BUI!I1'ng,,\1,110<ItC0:;r!~:;~'a!o.N~,·.'Yorio;1J202<-&Teleonone1~6-C;53-i525T.:IexS!1--3.;23I,CP.ES6UF ;:~":7,-:-~.~~;:~::;~~..•-••~)..!o•,_.~--.-~I,~••III-I!~1,1'Ir~ ~~~~~;r;"-'..,.'-<,(Y~~~~F:-'~~:.~>:::,f~~j'7'''''-~..';'-.....;••'..•+•)......-~...>--~-----/"~/-"--:./-;-~---i[:-~l~..,~S./ YEARMAINACCESSTOSITECONSTRUCTIONACCESSATSITEDIVERSIONTUNNELS1984'1985"II"........II...tlln.1986198719881989199019'9119'92199319941995aDEWATERCOFFEROAMSMAINDAMSERVICESPILLWAYEMERGENCYSPiLLWAYINTAKESPENSTOCKSPOWERHOUSETAILRACETURBINEIGENERATORINITIALIMPOUNDMENTTESTANDCOMMISSION_L-,rCl:-OSUR-,..-.1"1.r-LACUMENTJON+PLACEMENTIIIIIIIIII"I'"II'IIIIUIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII'~IIIIIIIIIIIIIIIIII1IIIIIIIIIIIIIIIIItllllllllllll,,"I',.,.,'UNITSta2ONL.11~IE/400MWl1111111111111111111UINITS36'"ONWINEIN1995(400MW)1--------L----..L----.JL---..L-----.L---.l.----.JL---i-----.L---1IIP;lIPALASKAPOWERAUTHORITYl'LEGENp.Krr{EARLIESTSTARTOFACTIVITY"U_~t~1SUSITNAHYOR-OELECTRICPROJECT~lUII...1ICRITICALACTIVITIES(EARLIESTFINISHOFACTIVITYWATANAFILLDAM.:1l.-OTHERACTIVITIESrLATESTFINISHOFACTIVITYPRELIMINARVSCHEDULEOhfSEASONALLIMITATIONS(400MW)I,.._;~~~~~N"U':TA-';;'S.,,,,,, YEAR 1992 19,93 1994 1995 1996 1997 19,98 1999 2000 , MAIN ACCESS TO SITE ..II.................11 CONSTRUCTION ACCESS "AT SITE DIVERSION TUNNELS 11"11"11111 DE ArER t COFFERDAMS ... EXCAII TE ASUTMENT S...,EXCAVAT JON IN tOE COFFERDA S /FOUNOATJO PREPARATIO MAIN DAM CONCRET E MAIN DAM .......11 1IIIIIIIIIIInlill 1111111.11111111111 '11111111111111111 11I111I11I1"lIlln IIUUII.......1 SERVICE SPILLWAY . EMERGENCY SPILLWAY INTAKES a PENSTocKS SADDLE DAM POWERHOUSE'-, TAILRACE TURBINE GENERATOR UNIT I ON LI NE NIT 2 0 LINE INITIAL IMPOUNDMENT "pNlT'ON LINE It..II ,..tulf IT 4 ON LINE TEST AND COMMISSiON mm II ALASKA POWER AUTHORITY .KU [""'''" START OF ACTIVITY III SUS1TNA HYDROELECTRIC PROJECT LEGENp OEVIL CANYON THIN illlUlIlIl CRITICAL ACTIVITIES (EARLIEST FINISH OF ACTIVITY ARCH OAM PRELIMINARY _OTHER ACTIVITIES CONSTRUCTION SCHEOULE ~SEASONAL LIMITATIONS NOT SHOWN .rLATE~T.FI:ISH OF ACTIVITY "'flIGUAI!h'q ~-~Im t ·PROJ....Oe:2210 e..":~.c:;2.~.~~I;:::':.!':J.T~~!~"l?:I~ S.l..N31N~3SS3/1I.l..'ltN1:J3.l..l'lt03S0d01:Jd8XION3dd'lt AppendixBProposedAlternativeSegementsAppendixBconsistofasetofmapshowingalternativesalignmentsegmentsstudiedduringthework.r26/b3eachofthecourseofthe R&M CONSULTANTS,INC. ENGINses::ts CU!OLOGISTS·PL.ANNERS SURVEYORS rrn(j)rn::0 0 0 0 Iz»000r::0 ::0::0 0::0::0::0::00000»0000::0::0::0001N0»»»::orrr::0-;-;-;-fTIfT1fT10::0::0::0OZZZ::0»»»-;-;-;«<fTIfT1fT1(f)(f)Ul 01 .I> 23Q8\'-.26I242524-00.•"'0"0<3~ceZ0LI-«S:2ClceWWce:::E~«w(J)cewa-ceu««::.::(J)«...J« f\)~'"!~Qo'II;I',~~?\..~\---~~o ~(i'"'r.\!(\_.~)l'I"j 3000,')~5.(,..7•8..X274-02950'=::Jx2952•~17\..-/SOU«~Z~->.«,....c::::..lIJ~281--Z~z<~!:iii::I~lIJ!-\Z~C#~O~IU"3Y33~•I"<0r.\I~<:>co!016\oil~/ '/2T3\NT30N 1/2:=~-;-;'Ji22__--..L~~___----GiGRAPHICSCA;d___L_E¢"IN-:M~IL:':E__-=TII!iIIIL.__ -_/7.-,c..'.a."".-'.x331024o.,'0.c'18196\\1729_f,/.~\.~......8'<-'•a:0u.Qwa:<C0...Wa:0...tP2~->~alfl~1--2~'"~~==:..I'Q::l~lfl~Qzg..O~==tP==•2:Qun~II~'"'"w~~~190' ozex:oLl.«Q0wa:a:w«::Efu«a:(/)a.wa:o«I-ow>"")!::ga:a.o01=a:::>I-«0a:WW..I3=~oa:a.Q«>::0:::::I:(/)««z..II-«(/)::>(/)5 /)I,~~~ 280r;GRAPHICSCALEINMILE2635!~350025o.363019,0,,'r-~"-'a:231192002LI.QLIJ,1?9'oc::ex:Q.LIJc::Q..-U·02~30"'/29~->"'0R·l\"C>O)il\J1--('~Z~"'~,o}5a~~:JuI'\',:J~lJ<J5'232O)!..?6'so3693zg"iQg0()~UeC:.-~:00~x2952II~~2850CI)3'265CI)"'''bo~LJ@@"'>~00~.1112'~S(>,!::~600.,_,--..c::0:I:I-::;)ex:13~Itoc::18<55017LIJ":7s:0Q.ex:::.::rnex:..Iex:21 r26/b4APPENDIXCALTERNATIVECOMPARISON APPENDIXCCOMPARISONOFALTERNATIVESEGMENTSGRADE,CURVATUREANDDISTANCEAppendixCliststhelength,averagegradeandsumofdefectionanglesforeachsegmentstudiedandeachpotentialcombinationofsegments.Thistabulationwasusedtoselectthecombinationthatmakeupthepreferedalignmentwithineachcorridor.TABLEC.1,SummaryofAlignmentparametersDistanceAverageSumof(Miles)Grade%DeflectionsSegmentl-A64.7Miles2.51%492°34'Segmentl-B16.2Miles1.91%57°10'Segmentl-C27.5Miles2.10%163°37'Segmentl-D9.0Miles4.19%125°57'Segmentl-E7.5Miles3.82%282°38'Segmentl-F4.1Miles2.24%138°51'Segment2-A56.7Miles2.72%154°29'Segment2-B13.6Miles3.32%79°08'Segment2-C7.5Miles5.08%26°16'Segment2-D10.7Miles3.32%16°48'Segment2-E15.6Miles2.09%35°16'Segment2-F3.9Miles2.09%22°16'Segment2-G7.7Miles4.49%152°30'Segment2-H5.4Miles1.91%24°00'Segment2-111.4Miles1.13%18°30'Segment2-J12.2Miles3.78%268°48'Segment2-K0.9Miles5.9%120°00'Segment2-L8.7Miles2.1%34°28'Segment3-A38.5Miles1.26%59°16'Segment3-B38.5MilesSegment3-C23.4Miles1.18%84°12'r26/b5 DistanceAverageSumof(Miles)Grade%DeflectionsRailroad(2-R)57.7Miles1.48%299059'Railroad2-RR13.6Milesr26/b6 C.2-CombinationsofAligmentParametersNorthofSusitnaRiverAccessRoads(Corridors1and3)DistanceAverageDefl.Sumof(Miles)GradeMileDeflection!1.Segment1-A -WatanaCamptoParksHwy.N.Jct.68.6Mi.2.51%7°10.82'492°34.152.Segment1-A,1-B-WatanaCamptoParksHwy.64.8Mi.2.37%7°05.66'460°17.073.Segment1-A,1-C-WatanaCamptoParksHwy.68.08Mi.2.35%7°59.86'544°29.104.Segment1-A,1-D-WatanaCamptoParksHwy.64.27Mi.2.70%8°29.59'545°51.135.Segment1-A,1-B,1-D-WatanaCamptoParksHwy.60.55Mi.2.58%8°28.90'513°34.046.Segment1-A,1-C,1-D-WatanaCamptoParksHwy.63.75Mi.2.54%9°22.61'597°46.077.Segment1-A,3-A-DevilCanyontoDenaliHwy.77.50Mi.1.83%5°07.09'396°39.528.Segment1-A,1-B,3-A-DevilCanyontoDenaliHwy.73.16Mi.1.67%4°56.29'364°22.949.Segment1-A,1-C,3-A-DevilCanyontoDenaliHwy.76.73Mi.2.22%5°49.63'448°34.4110.Segment3-A-WatanaCamptoDenaliHwy.39.09Mi.1.26%1°30.96'59°15.7f:.11.Segment3-B-WatanaCamptoDenaliHwy.41.98Mi.1.15%2°13.15'93°09.4S12.Segment1-A,3-B-DevilCanyontoDenaliHwy.80.39Mi.1.73%5°21.36'430°33.7S13.Segment1-A,1-B,3-B-DevilCanyontoDenaliHwy.76.68Mi.1.58%5°11.64'398°16.7114.Segment1-A,1-C,3-B-DevilCanyontoDenaliHwy.79.86Mi.1.59%6°02.49'482°28.7<34.Segment1-A,1-B,1-E,1-F69.98Mi.2.21%7°09'538°24'WatanatoParkHighway36.Segment3A,3C51.Mi1.48%1°24'49°18'r26/b7 SouthofSusitnaRiver(Corridor2)DistanceAverageDefl.Sumof(Miles)GradeMileDeflectiom15.Segment2-A-WatanatoSherman56.6Mi.2.72%2043.77'154029.5316.Segment2-A,2-D-WatanatoParksHwy.67.15Mi.2.81%2033.05'171017.3717.Segment2-A,2-E,l-A-WatanatoParksHwy.76.51Mi.2.52%2033.11'195014.7718.Segment2-A,2-F-WatanatoSherman54.79Mi.2.81%3000.09'164026.9319.Segment2-A,2-F,2-D-WatanatoParksHwy.65.34Mi.2.89%2046.43'181014.7720.Segment2-A,2-F,2-E-WatanaToGoldCreek74.69Mi.2.58%.2044.84'205012.1721.Segment2-A,2-B,2-C-WatanatoSherman59.47Mi.3.26%4°02.91'240045.9622.Segment2-A,2-F,2-B,2-C-WatanatoSherman57.66Mi.3.36%3057.73'228027.4823.Segment2-A,2-B, 2-C,2-D-WatanatoParksHwy.70.02Mi.3.85%3040.71'257033.8024.Segment2-A,2-F,2-B, 2-C,2-E,l-A-WatanatoParksHwy.77.56Mi.3.00%3°28.26'269012.7225.Segment2-A,2-B,2-G,2-1,2-H-WatanatoGoldCreek51.66Mi.2.38%5032.25'286004.2'26.Segment2-A,2-B,2-G,2-1,2-H,2-E,2-D-WatanatoParksHwy.68.50Mi.2.09%4004.18'278046.4827.Segment2-A,2-B,2-G,2-1,2-H,2-E,1-A-WatanatoParksHwy.N.Jet.68.25Mi.2.17%4036.27'314015.28r26/b8 SouthofSusitnaRiver(Corridor2)(Continued)DistanceAverageDefl.Sumof(Miles)GradeMileDeflections28.Railroad2-R,WatanatoGoldCreek58.01Mi.1.48%5010.27'299058.86'29.Segment2-A,2-B, 2-C,2-E,WatanatoParksHwy.79.37Mi.2.93%3032.82'281031.2'30.Segment2-A,2-F,2-B,2-G,2-D-WatanatoParksHwy.S.Jct.68.21Mi.3.35%3035.74'245015.32'31.Segment2-A,2-F,2-B,2-G,2-1,2-H-WatanatoGoldCreek49.23Mi.2.33%5056.30'29601.6'32.Segment2-A,2-F,2-B,2-G,2-1,2-H,2-E,2-D-WatanatoParksHwy.S.Jct.66.69Mi.2.41%4054.59'327026.39'33.Segment2-A,2-F,2-B,2-G,2-1,2-H,2-E,2-1WatanatoParksHwy.66.44Mi.2.22%4050.79'324012.18'.,35.Segmentl-F,2-L,2-12-G,2-B,2-A,2-J68.5Mi.2.10%4006'284058'Combinationsbeyondtheseincludeavarityofsegmentsthatareminoradjustmentsanddonotsignificantlyimpactlengthgradeorcurvature.TheCombinationsselectedforeachcorridorare:r26/b9Corridor1Corridor2Corridor3Combination34Combination35Combination36 r26/b10APPENDIXDTERRAINUNITMAPPINGcc:- AppendixD -TerrainUnitMapsThisappendixincludestheterrainunitanalysisfortheaccessalternatives.Thisdataidentifiesthesurfacegeologyandtabulatestheengineeringcharacteristicsofthevarioussoils.ThealternativesegmentsstudiedareplottedontheTerrainUnitMaps.Thesoiltypesandcharacteristicshavebeentakenintoaccountindevelopingtheconstructioncostestimatesforthealternateplans.r26/b11 TERRAINSLOPEPROBABLEDRAINAGEFROSTTHAWSUITABILITYASSOILUNIFIEDBEARINGSLOPEUNITCLASSI-SOILPERMEABILITYINHEAVESETTLEMENTSOURCEOFSTRATIGRAPHYSTRENGTHSTABILITYSYMBOLFICATIONTYPESUNFROZENSOILSPOTENTIALPOTENTIALBORROWUBxuf.-1oderatetoNilNilVel·YHighr..loder'atetoZVertic<::!CC0CLav.toIJ..ModeratetoSteel='GP,GM,Good/HighLowtoHighLowtoModerater.-loder·ateLowtoModel'ateSW,CWCCCIModeratetoSteepGM,SM,MLPoor/LowHighHighv.'hereLowLowPoor«0-WCCCs-ftoSteepingSW,SM,MLFrozenContinuousHighHighHighlowPoor0-ModerateGW,SV>/Good/HighLowHi(]hHighFlattoGentleGood/HighFlattoGentleGood/HighGFoGW,SWGood/H'ghLowGFeSteepLocalSlopesGW,SWGooa/HighLowLowHighModerateIIIGFkGVI,SWGood/HighLowLowHighModerate~~IuJ~GtaGM,SW,Modef~ate/ModerateLowtoModerateLowtoMOderateModeratea~GentletoSteepGtb-fGentletoSteepGM,SM,Fr'ozenHighHighLov.'0HighNilFlatPt,OtPoor/ModeratetoHighHighL-fGentleSP,SW,MLHighHighpoorModeratetoHighModeratetoHighFine-PoorFairI-HighHighUGentletoModeratePoorW>-...,I-0ModeratetoSteepGM,SM,MLHighHighCCCC0-0U::I:ModeratetoSteepGW/GM,HighHighl-CCSW,SMpoor:::JI-«UCCWGentleFrozen...IHighHighFine~PoorWLowWCoarse~Fair;:00CCModeratetoSteepfrozenContinuousHighHigh0-CLo"':poor>-«::I:~FrozenC/)«ModeratetoSteepContinuousHighHighLowPoor«Z...II-«enGentletoSteepDiscontinuousLmvtoModer-ateLo....toModerate:::JGood/HighModerateenGood/LowtoHighLowtoHighLowtoModerateModeratetoHig!lGood/LowtoModerateContinuousLowtoHighlowtoModerateModerate 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SNtl3::JNO::Jl\fl.N3WNOtlIAN33XION3dd\f AppendixE-EnvironmentalConflictsAppendixEisaseriesofmapsonwhichthemoreobviousand/orcriticalpotentialenvironmentalconflictsareindicated.ThisdatahasbeenprovidedbytheEnvironmentalteamandisfullyconsideredinanalyzingtheaccessplans.ThefollowingexhibitsdonotcoverthecurrentlyperferredalignmentfromDeadmanLaketotheDenaliHighway.ThissegmentwasselectedtoavoidthecariboucalvingareaaroundButteLake.ThenewlinedoesinfringeonsummerCaribourange.r26/b13 ~==::::::::~~C>.~~~====~~~.,::~.':'!~.c;;~;;.~":!.s~.•~~"T~.!:~~.~T;;~J.~!!'!==.,=:========:=~lDALASKAPOWERAUTHORITYPREPAREDFOR:INCEXMAPSUSITNAHYDROELECTRICPROJECTACRESAMERICAN,INC.'-===-- I .G"o~,'====!.J;::==AL=A=SK=A=P=or::W='R'::A=U:"'TH=O=RJ..:'TY~~==A=C=C=E=S=S=~=·~=~M=.~=.c=:=.~=.~=,~=.=:=:=.N=:=!'=J'=~!'J=.•=,,=•.P=R=EP=AR='=O='=O=R='=:::::;]D'-SUSITNAHYDROELECTRICPROJECTACRESAMERICAN,INC. I!i.Ill,IiI3,-__A_LA_S_'A_P_OW_'_R_A_U_TH_O_R'_T_VA_C_C_E_S_S_~_·&_·~_~~_·_:_~R_·":_:_:_~_;T_:_~S_·:_~_o'·_~!'I_··_C:_;P_R_EP_A_R'_D_FO_R_'__J1DSUSlTNAHYDROELECTRICPROJECTACRESAl.lERICAN,INC. •~rm"oool===d~~C>.g~~=====~·~'::;·M~...~"~~~~..,,,~.C!~~T=~=~.=T:'=!..=I~=.c::~~~~=)lD;::.PREPAREDFOR:ALASKAPOWERAUTHORITYACCESSCORRIDORSACRESAMERICAN,INC.SUSITNAHYDROELECTRICPROJECT~__-4-'" ,"\,\~'-.-~,•I''-",'-,..•".",,"1"~'\+p.,'1~,r[!i!~IlVIB;[=====~~-=,:::::C>.=~...::,-.:::=======~=~:::..M:::..=.=~=~=,,:!=.S=,.,=,-!=~T=,!"=••="!=.T=~=J.=~=~=.c;:=:========::::lDALASKAPOWERAUTHORITYACCESSCORRIDORSPREPAREDFOR:SUSITNAHYDROELECTRICPROJECTACRESAMERICAN,INC. "gqD"1fC=:lri\;;;R&MCONSUL.TANTS,INC.]D~===f.~~~e;".§;:!i\Y~I=====~"'~"~"'='~"'~"~'''~''~''~''~''~''='':::''':::'':::''~PR~EP~AR~ED~FD~R='==i.ALASKAPOWERAUTHORITYACCESSCORRIDORSACRESAloIERICAN,INC.SUSITNAHYDROELECTRICPROJECT II:==='L='5='='=PO:!:W:E~R:':'U~T:::HO=R1~TY~!::==A=C=C=E=S=S=C::=:~~~~":~'~~C;~:~;~:~~~~"~:~".!"~.'::,T~~'~'!~~"=".~·P=RE=P'=R=EO=FO=R='=:::<)DSUSITNAHYDROELECTRICPROJECTACRESAMERICAN,INC.'-'====V.';...,-'.. ~n>"m,,====~====:::'::::::'::::::=::!.-':::!.~=======!'=-=~~=!'!'=.=.c=..=C;=::!=~'e=;'=.c="=~=.!"=..=T=~="=~,!'I=..="'=:=========<1DALASKAPOWERAUTHORITYACCESSCORRIDORSPREPAREDFOR:SUSITNAHYDROELECTRICPROJECTACRESAMERICAN,INC. ,-."ooo[i~f~in~1olf?ri\\JAR&MCONSULTANTSINClDr==~~:=::~?~~§~\Y~I.======~·~··~"·~··~·~·~···~··~"~"~·~"~"~"~·~.J~••~••~••~:======~.I~[0!~IALASKAPOWERAUTHORITY!iiSUSITNAHYDROELECTRICPROJECTACCESSCORRIDORSPREPAREDFOR:ACRESAMERICAN,INC._.;,;........-.--•.., "IIi;('l,l'I[~====~~::§C>.==~~l:::=====~~:::::..'f'~..M~•••~,,~C?~~~.::~~~~T=e=~=.T~~="'='!,;,=E=:======<1D~ALASKAPOWERAUTHORITYCCSCO0PREPAREDFOR:~SUSlTNAHYDROELECTRICPROJECTAESRRIDRSACRESAMERICAN,INC.L-------' "ooo[I~,I'l,~I,=====::::::::::=::::!.-':::!.--!:::=====~R~&~M~C~D~N~5~U~LT~A~N~T~5.~'~N~C~'=======!)D_. (.........0.~.".Dg'•••••A.....R.....~••"...I~in!~IALASKAPOWERAUTHORITYACCESSCORRIDORSPREPAREDFOR:SUSlTNAHYDROELECTRICPROJECTACRESAMERICAN,INC.'--~~--==::..=:...._.J ~rm''===V';:.==A=LA=SK=A=POCWE::::':R~AU~TH~O::!.RIT~Y:::.!:==A=C=C=E=s=s:::::!"~··:~..·r;t=~::::::=:=·:s=,==:=.:=:=.:=!l='~!=.~DC=·;=PR=EP=AR=EO=FO=R,=~)D'-SUSITNA,HYDROELECTRICPROJECTACRESAMERICAN,INC. "o&v ;,"o&"'='=1=,.=,l=~~='"I~===~-=:::=='...2::~======~=.':=~=..=C:=~=."::=.,,!=!-!=~T=.f'=•.N=..T=.!'="..=!!"=,.C=.,======;]DI~m!~IALASKAPOWERAUTHORITYACCESSCORRIDORSPREPAREDFOR::0SUSITNAHYDROELECTRICPROJECTACRESAMERICAN,INC. 531.lilJlJI1.531.50:::>=1XIGN3ddli APPENDIXF-COSTESTIMATESTheoverallcostsofthevariousaccessplansmustbeaconsideredintheselectionprocess.Theaccessplansandtheirestimatedcostsareoutlinedherein.Theprocessbywhichtheestimatesweregeneratedisdocumentaedandtheprimarycomponentsofeachplanaresetforth.F.1-IntroductionCommonelementstoallplansincludequantitiestobemoved,theportsthroughwhichallcommoditesareassumedtoflowandtheton-milecostsofhaulforrailandtruck.Thecostsdifferencesdevelopedhereinwillresultfromdifferencesinlength,difficultyofconstructionandmaintinance,bridges,railheads,andthelengthofhauloneachmode.F.2-SeaPortsTheAlaskaseaportsidentifiedforuseinsupplyingtheSusitnaHydroelectricProjectareAnchorageandWhitter.Anchorageistheperferredportforthoseitemssuitableforship-mentsinconventionalcontainersandtrucks.TheportapparentlyhasadequatecapacityandthebestfacilitiesofanyAlaskaports.ThedrawbackinAnchorageisthelackofcapabilitiesforroll-onroll-offrailshipments.Whittierisuniqueinthatthereisroll-onroll-offrailcapability.BecauseoffreightratesandhandlingchargesWhitteristheobviouschoiceforarrivalofallmaterialsthatcanbeshippedbyrailcar.r26/b15 SewardandValdezwereinvestigatedandeleminatedasprimarypartsforreasonsofdistance,portfacilitiesand/orportcosts.TABLEF-2.1ACROSSTHEDOCKHANDLINGCOSTSCostin$/TonMaterial(1)To(2)To(4)To(1)ToFromSeattle(6)AnchorageSewardWhittierValdezReinforcingSteel72.0072.0055.0086.00StructuralSteel85.40 85.4055.00125.00Cement66.0066.0055.00(3)80.00GeneralCargo80.00 80.0055.00110.00Equipment160.00160.00120.00 191.00Explosives89.00NotAllowed55.00115.001QuotedbyPacificWestern.2Informationnotreceived-EstimatedequaltoAnchorge.Ratesforfuelincludedinmodalalternatesection.3Ratefor140,000IbHopperCars-RatesforBags100.00/tonasperARR.4RatesderivedfromquotionbyARR.5IncludesStevedoringatallports.6ExplosivesmustflowthroughPrinceRupert,B.C.LineHaulrateswerecollectedfromtheAlaskaRailroadandseveraltruckingfirms.Comparisonoflinehaulratesisshownbelow.TABLEF-2.2LINEHAULRATESINDOLLARS/TON-MILEr26/b16ItemEquipmentSteelCementFuelGeneralCargoExplosivesRail0.18780.25770.15650.14500.12620.6267Truck0.20690.20690.20690.20690.20690.2069 Whilecertainitemsmaymovebytruckwithlowercosts,themixofitemsandquantitiesmakeitclearthattheoverallmostcosteffectivelinehaulmodeisrail.Forthisreasonallplanscontemplaterailhaultothemaximumextentpracticable.F.4-RailheadRailheadfacilitieswillberequiredatoneormorelocationsdependingonthefinalplanadopted.Thelogisticsestimatesindicateaneedtobeabletohandleaflowof40to60railcarloadsperweek.Thedetailedrequirementsfortherailheadwillvarywithlocationhoweverforthepurposesofthestudyatypicalfacilityhasbeendevelopedandwillbeconsidered-asapplicableatalllocations.Thetypicalrailheadlayoutisbasedonthefollowingrequirements.TheproposedlayoutisshowninFigureF-4.1.Theestimatedconstructioncostofthetypicalrailheadis$5,160,000asshowninTableF-4.1.Scope:Therailheadmustbecapableofhandlingabout50carsatatime.1)Piggybacks2)Containerized(Sealandtype)3)TankCars4)HopperCarsElements:1)Sidingstostorerailcarsarrivinganddeparting2)Siding(s)tostorerailtankersforon-demandpumpingintotrucktankers3)Cementpumpingareasr26/b17 4)Piggybackoffloadingarea(ramp)5)Containerizedoffloadingarea(w/craneorforklift)(contractorstosupplyequipment)6)Truckstorageandmaneuveringarea7)Officespaceandemployeefacilities(contractorsupplies)8)Truckfueling/servicing(contractorsupplies)Details°°°°Degreeofcurvatureshouldnotexceed12°30'Require45'lengthoftrackpercar.Minimummainlineorladdertoladderspacing18'centertocenter.Minimumbodytobodytrackspacing14feet.Maximumangleofladdertosideing,foraslowmovingfreightyard,#8frog,is7°9'10".Arrivalanddeparturetracksshouldeachbelongenoughtoholdthelongesttrainanticipated.Optimumyardcapacity=110%ofarrivalrate.Parameters:°Volume:50cars/wk.day.ThesecouldallUseamaximumof50carsarrivingin1beofonetype.r26/b18 ooooooLength:need45'percar=2,250'BetweenSidings:Need2laneroad(24'plustrackwidth),minimum14'fromNo.1to2,14'fromNo.2to3,29'fromNo.3to4,and29'fromNo.4to5.LadderLengths:Whenspacing=14',differenceinlength=111V,whenspacing=29',differenceinlength=231'ActualLengths:No.5Minimum=2,250',legcouldbelongerifterraindictates.No.4=2,250'(min.)No.3=2,250'+2(231)=2,712No.2=2,712+2(231)=3,174No.1=3,174+111%;=3,397Note,No.1sidingalreadyexistsatGoldCreekandis4000'long.Turnaround:R=460'A=100'(2cars)(Tangentlengthbeyondswitch)Trucks:WB-60,WB-50,maximumturningradius=45',minimumturningradius=19.8,maximumlength=65',maxwidth=8.5'orforwideloadparkingslots:use12'x70'aisle:55'widetoallowforturnintostalls,#ofslots=50ea.Sources:oHennes,RobertG.andEkse,MartinI.,FundamentalsofTransportationEngineering.McGrawHillBookCompany,1955NewYork.r26/b19 oMerritt,FrederickS.,StandardHandbookforCivilEngineers2ndEd.McGraw-HillBookCompany1976NewYork.TABLEF-4.1RAILHEADCOSTESTIMATE1981UNITANCHORAGEAMOUNTPRICEPRICE1.Clearing25ac.$4,OOO/ac.$100,0002.WasteExcavation78,000cy$3.50/cy273,0003.CommonExcavation505,000cy$3.00/cy1,515,0004.RockExcavation-0--0--O-S.Borrow-0--0--0-6.GradeABase4,900cy$12.00/cy58,8007.D-1Base2,400cy$15.00/ton36,0008.ACSurfacing2,200tons$55.DO/ton121,0009.Fabric-0--0--0-10.TopsoilandSeed15ac.$2,500/ac37,50011.TrafficControlDevicesL.S.50012.Subballast25,800cy$6.00/yd154,80013.Trackage19,700I.f.$100/1.f.1,970,00014.DockLumber(6Ix6")16mbf$400/mbf6,4001981TOTAL$4,273,000Roundto$4,300,000Convertingto1982Dollars$5,160,000(20%indexincrease)r26/b20 F.5-BridgesBridgesaremajorcostitemsandforsomeplans,majorscheduleconstraints.Layoutplansforthemajorbridgesareincluded.BridgecostestimatesarebasedonAlaskaDepartmentofTransporationandPublicFacilitiesaveragebidinformation.ThisinformationwasprovidedbyaDepartmentofTransporationandPublicFacilitiesestimator.Bridgepricesup-datedto1982dollarsareapproaching$150.00/squarefootofdeckforcompleteinstalla-tions.Therailroadbridgesnormallyincludeheaviermembersandfounda-tionelementshowevertheyarenarrower.InformationreceivedformtheAlaskaRailroadEngineeringdepartmentindicatesthatsquarefootcostsforrailroadbridgesareapproximatelydoublethatforhighwaybridge.Thereforeacostof$300.00/squarefootwillbeusedforestimatingrailroadbridgecosts.FigureF5.1showsa440-footcontinuousweldedplategirderstructureoverIndianRiver.Thisstructure,withslightvariationsinheightand/orlengthistypicalofallpossiblecrossingsofIndianRiver.FigureF5.2showstheSusitnaRiverstructureproposedforsegment2-L.OthersegmentscrossingtheSusitnanearGoldCreekwouldhaveabridgethatwouldhavedifferentalignmentcharacteristics,howeverover-alldemensionswouldbesimilarinmostcases.Costestimatesarebasedonthestructureshown.FigureF5.3showstheroadandrailroadbridgesoverCheechakoCreekimmediatelyaboveDevilCanyon.Thisstructureisinalocationthatmakesitamajortimeconstraint.r26/b21 FigureF5.4showstheroadwaystructureoverFogCreek.FigureF5.5aroadwaystructureoveranunnamedcreekabouttwomileseastofCheechakoCreekinCorridor2.FigureF5.6showsthetypeandapproximatesizeofstructurethatwouldberequiredtoserveasahighbridgeatDevilCanyon.Thisbridgewilltakeapproximatelythreeyearstoconstruct.The$150/squarefootcostisprobablylowforthistypeofstructurehoweverthereisnoeqivalentAlaskabridge,sothatestimateisused.F.6QuantityEstimatingCrossSectionsForpurposesofestimatingexcavationquantitiesalongthepreferredrouteswithineachofthe3corridorsandtherailroadcorridor,crossslopesweretakenfromavailablecontourmapsalongwithlengthsofalignments.Crosssectionswerepreparedforcrossslopesof(J'-10%,15%,25%,30%,35%,40%,45%,and50%.Theupper2feetofmaterialwasconsideredaswasteexcavationonallalignments.Itwasconsideredthataveragevariationsofsubgradefromtheidealcutequalfillsectionwouldbe10feet.Frozenmaterialswereconsideredtohaveamaximumcutof10feettoprotectthe15feetdepthoffrozenindicatedinthesoilsinformation.Thismaximumcutdepthrequiresahighergradelinethanwouldbemosteconomicalforabalancedcut=fillsection.Localborrowwouldbenecessarytomakeupthedifference.Oncrossslopesupto10%,particularyalongcorridor#3aborrowpittypeofcrosssectionisproposedtoprovidematerialforr26/b22 -f~@300'r2~WO'f140'1-BOO-9=\~-~'I-~~/I~"V''''~~\:,""'-"~"V\.~l):~....~~rnI..:~....tI).:Jif)(p@..2.00'Iif'l,0w"v"~$~~.~~~:~tylI"..../Cl~"l~~~IIFILL~{",,,--7..f-W"-<;::;>;>plL.L';:4-700-~oo"U""",.HYDROELECTRICPROJECTALASKAPOWERAUTHORITYSUSITNARIVERBRIOGECORRIOOR#2SUSITNA....CCESSCORRIDORrii1~~~~-.,..~.__.-24BOFT.BRIOGE=====~~f"<A'-'·"e-~CALE.INFrzoo1000c:ooe::sORTHOTROPICSTEELSTRUCTUREREVl510N.'~-rteTTN~_hPF?O..l.#0.522/0Ig~,C----~..~='FII.MCCN~~ULT,-.N':"!;,1:·~:'::.•,"~••-,•••-•.-••-__--=-.-.::.l'.,r.....'''''''..t '''00 _1550 ::l~~ ~ ______2-:~:..'!c---t /zo'Ff!l! <0"'" I:( ltJ>m ...{ ,~ J 't- tl:~ \-·----iJ .-----_.-)---~._.. .<«, Cl '< " "-«) G'/zo't--I~t """"""~~.:~.;...,.=-5.%i I I I , I ! I I Ii!,!~!!!i !I !.:Cz:;<2j111 i II"11!1!II i!itl:::::'!l!'ill!!III I!III!==~"",''',<$;~,," ?~~_14,,50 \A/.~.J4e;0.t _14<=IPOto II ALASKA POWER AUTHORITY ftUn[O SUSlTNA HYDROELECTRIC PROJECT REVI!5/0N' ~DATE.~_::J_'NT'L 440 FT.CONTINUOUS WELDED PLATE GIRDER :3 SPAN BRIDGE SUSITNA ACCESS CORRIDOR INDIAN RIVER BRIDGE CORRIDOR".1 GAAPHIC .!5>CALE IN F7: .50 2-!S o 50 PROd #05Z210 ~ffi1IjS:~~IJ./~?J.~<>:..'It--·;lj~~t'--i:\..~~~<::>~~~~~%\'l......................~.'t~~~~~"'~~~\<)\<)"""''-,"-'-II1I~O'rrI'Izoo'';'00'200'1700~r___FILL.....-...-\.\)'~'"~~~I//I/V'~'~-I~OO/;'/7.'1-...~-1500.,•-1400;,.-/300[~~~m]1ALASKAPOWERAUTHORITY.____.,_SUSITNAHYDROELECTRICPROJECTSUSITNAAccessCORRIDORREY/S/QN1160FT.STEELOECKTRUSSBRIOGEROAOORRAILROAODATE.INT'LBRIOGESOUTHOF,oo,oo0'coOEVILCANYON~=6RAPHrc~CAL..E:INPT.~~NSUCT,;NT-;,-;~c~-I~~~~~t~----i--PRO,)1/-0.522/0.~"~••~.""..,.••.•..••-'.• •.."APPV0NKG ~,~,~-III~'i\:;_~~~IA'f=======I )u-·,cI\()~~'"'~rILL%~~<lFILL'-2400-2300-2200-2.100-2.000-/~OO-18W1400FT.STEEl.OECKTRUSSBRIOGE'oornl-/700ALASKAPOWERAUTHORITY--~~-----------SUSITNAHYDROELECTRICPROJECTREVISION"DLI.,"":"~20:='JOO020;::)==sGRAPHIC~LE.INFr.SUSITNAACCESSCORRIDORFOGCREEKBRIOGE,R,~T{::..,.,.._PROJ.VI'~.52.ZI0I:-~!~,":'!.C::-:'I:;.~':L!L,.·.rJ·~-;.l;·~~::. '-----"-/400-1700_,.:pOD-/500B'"<\l'"~-·:iIz@/oo,tI I,%'l-~"-,'!I~1H~\l--~~~.-_._~Q:8............\~f..::--If),:::lIf)(<:>%%\l1-.,.'l-~<ll"~'"'(),~~j-=T:1&100;rB@2oo'"1'7'-/300-12.00-/100SUSITNAACCESSCORRIDOR5V~/rNARIVE.R.EL.&:;0.'----------/000-900UIALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTRE.Vf.5/0N·D~T.e:IINT'Lzo::>.co0GRAPHIC-SCALE:INFT2=-800PRO../.01/:0.522.10SUSITNARIVERBRIOGEATOEVILCANYON i11li0}~%.~7~1-~IFILL<-.,~BB~e1-i-.i-.1-.i-~~{;l~m[=]=f.~i'~t" I,Bi.B~FILL7j~V'~2.2%-24002.30022002/00-ZOoo1900SUSITNAACCESSCORRIDOR1000FT.STEELBOXGIROERBRIOGE1iilALASKAPOWERAUTHORITYSUSITNAliYDROELECTRICPROJECTRE.,V/oSION:obTEl:TLu:o/CO0zcoe=:;GRAPHICac.At..lLINF{;CORRIDORiF2BRIOGES EOFDEVILCANYON-?':~~~7/i raisingthesubgradeelevationabovetheexistingground.Strippedorwastematerialcangobackintotheborrowpits.upto15%crossslope,cutswillprobablynotexceed10feet.sonoquantityvariationswouldbeanticiaptedbetweenfrozenandunfrozenmaterials.The25%130%1and35%crossslopesectionsindicateforunfrozengrounda+unfrozenand-unfrozensection10feetapartverticallywiththeexcavationquantitybalancingthefillquantities.TheFrozensubgradeupperandlowerlimitswithamaximumof10feetcutrequireborrowtobalance.Oncrossslopesof40%andover1itwasconsideredthatafterthe2feetofwasteexcavationonthesurfacetherewouldbeanother3feetofusuableexcavationbeforeencounteringrockexcavation.Inrockexcavation1thefrozenconditiondoesnotrequirethemaximum10feetcutrequirement.Fillslopesontheroadwaysectionsvarydependingonfillheight.Cutslopesareusedas\;:1inrockand1\;:1orflatterinnormalmaterials.Examinationoftheterrainunitmapsprovidedadditionalinforma-tionastowhererockandorganicsweretobeencountered.Adjustmentsweremadeinrockandwasteexcavationfromthisinformation.ThesectionsusedforestimatingareshowninFiguresF6.1-F6.16F.7-DrainageThecrossdrainagerequirementsforthepreferredalignmentwithineachcorridorwereestimated.Thedesignflowsweredeterminedr26/b23 I10',,'\....--I<f.If----'I--..·--··-_f44:::0::_.r....17'0"__'7'~"----J1I,-IIIFlt-.!ISHgOAD....----2;'z'±i '"~."=.'Ir/VZZZ/.".~,''o~:;;;W;;;::~~-777h~=----_..'~7/Z//7?9;zz,._...~~~,./.\..'"\10'.....--"/BORROWPITBORJ20WPITBORROWPITSECTION0-/0'7..C,:a06SSLopeqUANTITYESTIMATIl\JGCROSSSECTIONIc.>,:>IO205CALE:If.!fff-r~----.-_._---------.:-=E_,--•ALASKAPOWERAUTHORITY._-~---_.SUSITNAHYDROELECTRICPROJECTREV.oA~1!NT:SUSITNAACCESSROAOTYPICALBORROWPITCROSSSECTION0-10%CROSSSLOPEOD/"l,=,-,...;orr'lC--,"'.,....!~~1-------1DWrjr"\."._1\1'._....•_._CKI'"".''''........""""...".........,..,,,,,,- 44'11l-u_:OISUSGRAOE:a:CUT1FILLOFSAFTE.RRt=MovALOf"'"'Z'UNSUliABLEI\E"/~aGoJ;;'FIL.L/''f\..s'cUTi'Q'"''--2'.±.WASTE"-,'5%Cf2=-SLCP=QUANTln-ESTIMATiNGC!"OS-$'-SECTIOt-J--!--~oStoeoSCALEINFeE'T-------SUSlTNAHYDROELECTRICPROJECTALASKAPOWERAUTHORITYS....n::n••'1.14..14.LOLOC:::H:lHUAUM~m..EV~1t-lT'L.1"'1'O)#05e210ESTIMATINGCROSSSECTION 44'·0"I_n_I:2"!UXNH-"9.12'i~'.\10'MAX.CUTINFROZENo-G.~SU8GRADE"Z,S'YoCROSSSLOPI::CRJAt-Jl'ITYBSTlMATINGCi"=S-SECTIoN+JPROZENz'EXCAVAnON"TVWA-S-Te.~/"..-/ffil)NFr<OZ",N-91~.\--eaz/ll,.~:IFROZENk_L-~L~!~_--'IU~N::!F:';:"""~E=.N~/-~-; d----IOSlOeoSCALE''''fEE.,.IPOmjALASKAPOWERAUTHORITYijUnmSUSITNAHYDROELECTRICPROJECTSUSITNAACCESSROAD"'Ev·~it.:J.T'L.ESTIMATINGCROSSSECTION'Clu~,FROJ.#-OSZZIO1~~~._~~~~~~~~I~~:r~~_~~~?__, t·\y~..\z'±WASTE441I'I---~-0-------I+1FIC'OZEN1+}Ut-JFRaZEt-J<50%CROS-S'-s'LOPEQUA}.)TllYESTIMA1\fiGeROss-sECTIO!'J~!Io5\0eo5CALeINFEE-r~~~m.,2)<Uli!~·ali::_L~ALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTI2EVI',,,",,...r'C,SUSITNAACCESSROAOESTIMATINGCROSSSECTIONPRO!.#052210I?~GJ:,':__.:-.-----~----:~,~:,~.r;~'\;:LLT,-.r-l~;.I'.c. I-----,IoS'10z.oscALSIfJFEET-so%eROS-oSSLOPEQUANTIT'(e'T1MATINGC!"OS..-{;'i=CiION".----_"=---,_..,.••.-.-00.:---0-Qd!:Cl-G~"\IJ,."\~--l441_0"(+)FROzerN(+JUNFre.oeSN2'±WASTE''\'IV\,\\'i3Vt-"\[ijjJALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTSUSITNAACCESSROAORev.OATEI>.J"!.ESTIMATINGCROSSSECTION~~::]J.#OSQ2\O ~~\'t:.\I<[:'1'-0"(+)SUBGRADE\..S'COMMONEXCAVATION5'OVERBURDeNz'WA-S'TE~~/~_/~/_V--/';:r.-----\:i~~%-~/1".;;;::.1I11gt-$"'(1.J:'rzOC-~Q40%CROSS'-SLoP",QUANTITYESTIMATINGCf'OS'S>seCTIoN;!Io510$0~CALe.1;1feET00ffilALASKAPOWERAUTHORITYSUSITNA-HYDAOELECT'RIC-P-ROJECT--·Re:.v.""","",el"IT'L~~()J..Jf05'2.2'\0SUSITNAACCESSROAOESTIMATINGCROSSSECTIONIg~t.~-_...._--~--..-t'CKOFH~MCONSUl.TI\NTR,INC.!.c,,,,,', '-Z'W,AoS,ESUSITNAACCESS!=lOAD"u"".....nTuROELECTR1CPROJECTALASKAPOWERAUTHORITY~..~,~.,.....-ESTIMATINGCI=IOSSSECTION'•1'>"'nJ'if,05:'<210"_(jill-....."b;JfT/$'....rII/V~<J{fF::fi..1H~.{fill::;'--44'_011r!!o_'10:3-'seAL.t:INFEE.,-4£%CKDS'>-2LOPEQUANTITYESnMATlNGCROSS-seCTIOI'1(+)SUSGR'ADE'-..s'OVERSURDEt-J'\~\'"'R.EV.D....Te:_I\~IT"', ev.D"'T,INT'/...Vl~"\44'·0"(+)SUBGR'AOE:'-S'OVEJ2I3URDEN----Z·WAoSTE.so%CKO~TSlLJP/=Q)Af.lTITYl::-SnMATINGc:RO"~~CTION;'-~~):'i101.'0seAI.e:INFe:e:.,PROJ,#OSeeloHYDROELECTRICPROJECTSUSITNAACCESSF1CACESTIMATINGCROSSSECTION I29"-0".!9"/o_,£'}"o------'77>R'LO/\,/Z7h'1'--z'WA-sTE"1~/BALL,.,sr-,,\~~1;SUi3SALLA;ff~~7)/T//7A7/ffi2Z}~3~'[O'...!..-,:>.~BORROWFITSECTION0-10%CRO.s.s-SLopeQUANTITYESTIMATINGeRo'S",-SECTIONIr-Ios1020SCALE.114FEE-,[IPDIO]'ALASKAPOWERAUTHORITY8.YR_~_f-SUSITNAHYOROELECTRICPROJECTIREV.OATEf~T'L.SUSITNAACCESSRAILROADTYPICALBORROWPITCROSSSECTION"_1nO/,.,~CJn~~~1_Oc::JEFROJ.#0522\0i~~~----~WN.REL.~..-...,.,!-11------------CKDVGR&MCC!\l(';UL.TANTS,INC.--•..•~....."'".•..•.'.__..'..-""APWD .2a:9~'!r-I("')SUBGJ<:'"AD~4~IIIWII~f7:-fj;/;'·\\~\,-7~lTif§liT~J1F$7i'/.(-)SUBGEADE"10FT.'I~:-\.Q--------=~----Z'WASTESUSITNAHYDROELECTRICPROJECTALASKAPOWERAUTHORITY••I......OJ1020SCALE11\1FEET.lob%CR0.s,s-"LOP!::QUANTiTy!=SnMATlNG,,--eRaS'~'SE'CncN;!EVOAT~,,NILr='ROJ·..:#Ct~2'2.\OSUSITNAACCESSRAILROADESTIMATINGCROSSSECTION .\,,~\,,1'1.'SUSGRADE+)F/,?OZEN2~'~_~:-{I---~---IIIZ'WASTE..2-5%Cf'Oo&'.,;'SLOPEQUANTITYE£TI~ATII-lGCROo&'..<;;..~eC::T'C:oJ_f!IOSlOX>SCALE''NFEET'[IPomIALASKAPOWERAUTHORITY6unlaSUSITNAHYDROELECTRICPROJECT:ev.o;.;:;=e·.....rL.SUSITNAACCESSRAILROAOESTIMATINGCI=lOSSSECTIONf'R:JJ11-0S;Z;Z10i~~.IDW.!!..-t~~·L'!~!;r0:t:~~T~-~-~T~·N;:<I.':::~-t~~.ZfVG .\~~.\~\1to2a'-o"-lFre=EN(-H.jNFta:'ZSN30%C~.sS..s:LOPEQUANTITYc.snMATINGeRos,,;'-secTioN-o..~=-..-=--,-,--_._,..i'Io5\020SCALe:l"-lFEer~\'\1,...,\,\\1.-0".~[~~riOOlALASKAPOWERAUTHORITYSUSlTl~A-;;YOROELECTR'C-PROJECT--'";:;1q==·:···1·.=..SUSITNAACCESSFlAILFlOAOESTIMATINGCROSSSECTION~-....pJl_J""--'R.,JJITCt":"2,zr.JI:~,~:.~.C:~~.~:':'LT~'\N;:"I;"~C: REv.~INT'L.\,\1.-'~(+lFROZEN(+)UNFR:QZE\.Z'WA.l;'TE3b%CROSSSLOPEqUAfJ"r,,1TYESllMAllfJG:::FiD~'::'5'E_=r~()~~~FrIGS102.0SCALEINFEETn·.Y.\\'\3V",\\1-:\,;~~~OCL=£&!>."/o·0.(:1.ALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTSUSI7'NAACCESSRAILROAOESTIMATINGCROSSSECTIONprcoJit-0.5.2'210~~t_. 2S'-0"If-I--~\3'CO~MONE)<CAvA"'1lO/'J----------5'QVERI3URDeN2.'WA~TE'{_O·G:JI'.SUSITNAACCESSRAILROAOESTIMATINGCj:lOSSSECTIONI<~>;i:TJt'-l"l"t-."10%eRO"""-SLOPEQUANTIT'fO:-sTlMATINGL.-'ROSS""'fOeTIONiJI'-'\01:0SCAL-I::INFEET[iOOlALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTf'ROJ."0152?elo~t·_-"-----t~~I~1'l&MCDNGULTil,NTS.INC.-----.,,,,",~,,",••...,"0>"".'"_..•.•••••flr-~Vr ~'foo·G·-...:-.;,/(>'"fpli/?28'~O'1"SU8GRAPE'(ii?!"':;;;-"~9Ji?;-"...."./,/j~..:-;,!/f;c;(..f/~''""'----oS'COiv\MONexe-;VATlON\..s'OVEJ'<::I3UROEN.\\'I-V'-----z.'WA.sT'ESUSITNAHYOROELECTRICPROJECTALASKAPOWERAUTHORITYSUSITNAACCESSRAILROAOESTIMATINGCROSSSECTIONoornlPrY")I.n{)~_'""'Ini' I4{;""IoCROS-S..sLOPEQUANTIT'(DS'nMATINGcRO-.sS.secrroN()510roSCALEIN~EET:~I~ e-/.DAn:?I',...IT'!...\"It'r'o',(+)sUSGRADE.'1i!t§'.-:iii/$'·,iIP'1fi~.diiL=1ji~"'""----3'cz,IVIMONexCA-VATlON..s'OVERBURDEN~2'WASTE50%CR="'LopeaUANII1Y~BS'c!lrAATIIIGCI'o.sS'...."IONr:::Sid!o510roSC.ALIEINl=E"eTM~mALASKAPOWERAUTHORITYSUSITNAHYDROELECTRICPROJECTSUSITNAACCESSRAILROAOESTIMATINGCJ'lOSSSECTION1J2-1{0~'l_FR'OJ#06:?efO~"&..~.C:~:~.~~l;-T~N;:\I~~: bydefiningtherespectivedrainageareasonUSGSquadranglemapsandapplyingregressionequationsdevelopedbytheU.S.GeologicSurvey."FloodcharacteristicofAlaskanStreams".WaterResourcesInvestigation78-129R.D.Lamke1979.CulvertsizesandlengthsdevelopedbythisprocessareshowninTableF7.1.TABLEF-7.1CULVERTS(inlinealfeet)SizeA-1A-2B-1B-2B-3CR-1R-2DIA.L.F.L.F.L.F.L.F.L.F.L.F.L.F.L.F.-18"18,53023,0357,0558,24527,115 26,3509,00015,95036"3000100200200100200 20042"3002002001000400100048"1000 0 0100600010054"100200010020020010020060"400 400100100 10030010010072"100100100100100010010084" 01000 0100200010096"1000 0 0 01000 0108"02000 0 02000 0120"000 0010000(1)144"01000 0 0 0 0 0(1)168"1000000 0 00(1)Pipeslargerthan120"willbeeithermultiplateculvertorpipearchsimilarto"ArmcoSuperSpan".(2)18"diameterpipesaverage85'longunderhighway,50'underrailroad,largerpipesaverage100feetlong.F.8-ConsturctionCostEstimatesTheconstructioncostsestimatesoutlinedbelowincludemobilization,constructioncamps,constructionsurveyandengineeringservice.r26/b24 Clearing.tenfeetmaterial.DisscussionofBidItemsIncludedisclearingandgrubbingofvegetationtooutsideofexcavationlimits,anddisposaloftheWasteExcavation.Removalanddisposalofmuck,organicsandotherdeliteriousmaterial.RockExcavation.Removalofmaterialeconomicallyrip.Priceincludesplacinginpilingforlateruseinthestructuralsection.existingtopsoil,toohardtothefillorstockCommonExcavation.Allotherexcavationincludingremovalanddisposalorplacementinfill.Borrow.Whereinsufficientmaterialisacquiredforfillfromcommonandrockexcavationseparatepaymentwillbemadetodevelope,excavate,andplacematerialfromborrowpits.NFSSubbase.Non-frostsusceptiblegranularmaterialmeetingstandardspecifications.Grade"A"BaseandD-1Base.Granular,crushedmaterialmeetingstandardspecifications.A.C.Sufacing.asphaltbinder,Bituminousconcrete,primecoatandtackcoat.includingaggregate,Guardrail.Standardsinglerailguardrail.Culverts.18"crossculvertsarefiguredperlinearfoot.Largerculverts(36"&over),forindividualstreamcrossingsareeachmultipliedbyappropriatecostsperfoot,dependingondiameter,andlumpedintoonesum.Costsincludesplacement,anyspecialbeddingrequirementsonmaterials,andheadwalls.r26/b25 Fabric.StandardMirafiorTyparfilterfabric,tobeplacedoverorganicstoodeeptoeconomicallyremoveandreplace.ThawPipe.Onethawpipeperculvert.hangers,caps,standpipes,etc.PriceincludesTopsoilandSeed.Topsoilwillbemanufacturedfromappropriatematerialsremovedunderwasteexcavation.Seedincludesahydroseedmixtureofseed,fertilizerandlime.TrafficControlDevices.Includesallstandardpavementmarkings,plusreflectivepaddledelineatorsalongtheentirelengthofroad.signsandboardsasBridges.Allhighwaybridges,regardlessoftype,areatpresentfiguredonthesamepersquarefootbasis.Railbridgesarealsofiguredonasinglepricepersquarefootbases.RailHead.Thelumpsumpriceincludesallclearing,excavation,subballast,ballast,track,switches,Grade"A"base,D-1base,A.C.surfacing,topsoilandseeding,trafficcontroldevicesandtimbercribdocksasneededtocompletearailheadfacilityonanexistingtrackorateitherdamsite.Therailheadincludesfivesidingsfortrainmakeupandoffloadingof'varioustypesofequipmentandmaterial,twodocks,aparkingareafortrucks,andanengineturnaround.Contractorwillprovidehisownwarehouse,office,cranes,fuelfacilities,cementpumps,fuelpumpsandanyotherequipmentdeemednecessary.Subballast.Granularmaterialmeetingstandardspecifications.Trackage.Includesrail,ties,andballast.Switchesareconsideredasequivalentto200feetoftrackforthepurposeofthisestimate.r26/b26 TABLEF-8.1SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTA-lPARKSHIGHWAYTODEVILCANYONSTA0+00to1,650+00165,000ft.=31.25Mi.UnitQuantityPriceTotalClearing477AC.4,800.002,289,600WasteExcavtion1,294,200C.Y.4.005,176,800CommonExcavation1,189,072C.Y.3.504,161,752RockExcavation49,728C.Y.12.00596,736Borrow515,600C.Y.5.002,578,000NFSSubbaseMaterial321,750C.Y.7.002,252,250Grade"A"BaseMaterial175,560C.Y.14.002,457,840D-lBaseMaterial73,260Tons18.001,318,680A.C.Surfacing67,089Tons66.004,427,874Guardrail17,650L.F.36.00635,40018"Culverts18,530L.F.24.00444,72036"+CulvertsL.S.-254,400Fabric69,180S.Y.2.50172,950ThawPipes20,030L.F.36.00721,080TopSoil&Seed288A.C.3,000.00864,000TrafficControlDevices31.25mi.15,000.00468,750Bridges33,660S.F.150.005,049,000RailHead1ea.5,160,000.00~160,OOOTOTAL$39,029,832r26/b27 TABLEF-8.2SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTA-2DEVILCAYONTOWATANA(Inc!.alongcarr.3)STA1,650+00to3,828+00217,800ft.=41.25mi.UnitQuantityPriceTotalClearing576AC.4,800.002,764,800WasteExcavtion1,536,500C.Y.4.006,146,000CommonExcavation1,603,973C.Y.3.505,613,906RockExcavation146,527C.Y.12.001,758,324Borrow156,700C.Y.5.00783,500NFSSubbaseMaterial424,710C.Y.7.002,972,970Grade"A"BaseMaterial231,739C.Y.14.003,244,3460-1BaseMaterial96,704Tons18.001,740,672A.C.Surfacing88,557Tons66.005,844,762Guardrail6,050L.F.36.00217,80018"Culverts23,035L.F.24.00552,84036"+CulvertsL.S.-245,000Fabric49,820S.Y.2.50124,550ThawPipes24,335L.F.36.00876,060TopSoil&Seed326A.C.3,000.00978,000TrafficControlDevices41.25mi.15,000.00618,750Bridges6,800S.F.150.001,020,000TOTAL$35,502,280r26/b28 TABLEF-8.3SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTCORRIDOR#1Alone-(295STAofCor#3Included)PARKSHIGHWAYTOWATANADAMSITESTA0+00to3,828+00382,800ft.=72.50mi.UnitQuantityPriceTotalClearing1053AC.4,800.005,054,400WasteExcavtion2,830,700C.Y.4.0011,322,800CommonExcavation2,793,045C.Y.3.509,775,658RockExcavation196,255C.Y.12.002,355,060Borrow672,300C.Y.5.003,361,500NFSSubbaseMaterial746,460C.Y.7.005,225,220Grade"A"BaseMaterial407,299C.Y.14.005,702,186D-lBaseMaterial169,964Tons18.003,059,352A.C.Surfacing155,646Tons66.0010,272,636Guardrail23,700L.F.36.00853,20018"Culverts41,565L.F.24.00997,56036"+CulvertsL.S.-499,400Fabric119,000S.Y.2.50297,500ThawPipes44,365L.F.36.001,597,140TopSoil&Seed614A.C.3,000.001,842,000TrafficControlDevices72.50mi.15,000.001,087,500Bridges40,460S.F.150.006,069,000RailHead1ea.5,160,000.005,160,000TOTAL$74,532,112r26/b29 TABLEF-8.4SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTB-1PARKSHIGHWAYTOGOLDCREEKSTA0+00to700+0070,000ft.=13.26Mi.UnitQuantityPriceTotalClearing210AC.4,800.001,008,000WasteExcavtion575,480C.Y.4.002,301,920CommonExcavation570,180C.Y.3.501,995,630RockExcavation35,850C.Y.12.00430,200Borrow126,600C.Y.5.00633,000NFSSubbaseMaterial136,500C.Y.7.00955,500Grade"A"BaseMaterial74,480C.Y.14.001,042,720D-1BaseMaterial31,080Tons18.00559,440A.C.Surfacing28,462Tons66.001,878,492Guardrail9,800L.F.36.00352,80018"Culverts7,055L.F.24.00169,32036"+CulvertsL.S.-42,700Fabric18,844S.Y.2.5047,110ThawPipes7,555L.F.36.00271,980TopSoil&Seed130A.C.3,000.00390,000TrafficControlDevices13.26mi.15,000.00198,900Bridges84,320S.F.150.0012,648,000RailHead(GoldCreek)1ea.5,160,000.00.5L160,OOOTOTAL$30,085,712r26/b30 TABLEF-8.5SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTB-2GOLDCREEKTODEVILCANYONSTA700+00to1,350+0065,000ft.=12.31Mi.UnitQuantityPriceTotalClearing161AC.4,800.00772,800WasteExcavtion422,890C.Y.4.001,691,560CommonExcavation335,935C.Y.3.501,175,773RockExcavation23,625C.Y.12.00283,500Borrow445,200C.Y.5.002,226,000NFSSubbaseMaterial126,750C.Y.7.00887,250Grade"A"BaseMaterial69,160C.Y.14.00968,2400-1BaseMaterial28,860Tons18.00519,480A.C.Surfacing26,429Tons66.001,744,314Guardrail6,700L.F.36.00241,20018"Culverts8,245L.F.24.00197,88036"+CulvertsL.S.-50,400Fabric8,777S.Y.2.5021,942ThawPipes8,845L.F.36.00318,420TopSoil&Seed86A.C.3,000.00258,000TrafficControlDevices12.31mi.15,000.00184,650Bridges0150.000TOTAL$11,541,409r26/b31 TABLEF-8.6SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTB-3DEVILCANYONTOWATANASTA1,350+00to3,275+00192,500ft.=36.46Mi.UnitQuantityPriceTotalClearing631AC.4,800.003,028,800WasteExcavtion1,750,160C.Y.4.007,000,640CommonExcavation1,564,430C.Y.3.505,475,505RockExcavation246,750C.Y.12.002,961,000Borrow101,100C.Y.5.00505,500NFSSubbaseMaterial375,375C.Y.7.002,627,625Grade"A"BaseMaterial204,820C.Y.14.002,867,480D-1BaseMaterial85,470Tons18.001,538,460A.C.Surfacing78,271Tons66.005,165,886Guardrail8,300L.F.36.00298,80018"Culverts27,115L.F.24.00650,76036"+CulvertsL.S.-63,100Fabric96,541S.Y.2.50241,353ThawPipes27,615L.F.36.00994,140TopSoil&Seed410A.C.3,000.001,230,000TrafficControlDevices36.46mi.15,000.00546,900Bridges121,040S.F.150.0018,156,000TOTAL$53,351,949r26/b32 TABLEF-8.7SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTCORRIDOR#2-entirelengthPARKSHIGHWAYTOWATANADAMSITESTA0+00to3,275+003,275,00If.=62.03Mi.UnitQuantityPriceTotalClearing1002AC.4,800.004,809,600WasteExcavtion2,748,530C.Y.4.0010,994,120CommonExcavation2,470,545C.Y.3.508,646,908RockExcavation306,225C.Y.12.003,674,700Borrow672,900C.Y.5.003,364,500NFSSubbaseMaterial638,625C.Y.7.004,470,375Grade"A"BaseMaterial348,460C.Y.14.004,878,440D-1BaseMaterial145,410Tons18.002,617,380A.C.Surfacing133,162Tons66.008,788,692Guardrail24,800L.F.36.00892,80018"Culverts42,415L.F.24.001,017,96036+CulvertsL.S.-156,200Fabric124,162S.Y.2.50310,405ThawPipes44,015L.F.36.001,584,540TopSoil&Seed626A.C.3,000.001,878,000TrafficControlDevices62.03mi.15,000.00930,450Bridges205,360S.F.150.0030,804,000RailHead(GoldCreek)1ea.5,160,000.00--.2L16O,OOOTOTAL$94,979,070r26/b33 TABLEF-8.8SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTC=CORRIDOR3DENALIHIGHWAYTOWATANASTA0+00to2,340+00234,000Lf.=44.32Mi.Thisestimateincludesupgradingandpavingof±25milesofDenaliHighway.ClearingWasteExcavtionCommonExcavationRockExcavationBorrowNFSSubbaseMaterialGrade"A"BaseMaterial0-1BaseMaterialA.C.SurfacingGuardrail18"CuIverts36"+CulvertsFabricThawPipesTopSoil&SeedTrafficControlDevicesBridgesRailHead(Cantwell)TOTALQuantity800AC.2,245,400C.Y.2,450,800C.Y.'41,800C.Y.20,000C.Y.470,000C.Y.300,000C,Y.162,500Tons148,813Tons4,200L.F.30,350L.F.L.S.12,907S.Y.28,650L.F.514A.C.69.32mi.o1ea.UnitPrice4,800.004.003.5012.005.007.0014.0018.0066.0036.0024.002.5036.003,000.0015,000.00150.005,160,000.00Total3,840,0008,981,6008,577,800501,600100,0003,290,0004,200,0002,925,0009,821,658151,200728,400450,00032,2681,031,4001,542,0001,039,800o5,160,000$52,372,726Note:ThisestimateincludesquantitiesforupgradingandpavingDenaliHighwayfromCantwelltoSTA.0+00onSegmentC.ThesubtotalforjusttheDenaliHighwayis$7,307,762.r26/b34 TABLEF-8.9SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTR-1RAILROAD-GOLDCREEKTODEVILCANYONSTA490+00to1,350+0086,000Lf=16.29Mi.UnitQuantityPriceTotalClearing156AC.4,800.00748,800WasteExcavtion376,480C.Y.4.001,505,920CommonExcavation335,320C.Y.3.501,173,620RockExcavation2,200C.Y.12.0026,400Borrow108,500C.Y.5.00542,50018"Culverts9,000L.F.24.00216,00036"+CulvertsL.S.-93,100Fabric3,121S.Y.2.507,803ThawPipes10,100L.F.36.00363,600TopSoil&Seed101A.C.3,000.00303,000BridgesoS.F.300.000Subballast166,667yds.7.001,166,669Trackage(Inchl.sidingand3switches90,600L.F.120.0010,872,000Railhead(DevilCanyon)1ea.5,160,000.005,160,000TOTAL$22,179,412r26/b35 TABLEF-8.10SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTR-2DEVILCANYONTOWATANASTA1,350to3,545+00219,500L.F.=41.57Mi.UnitQuantityPriceTotalClearing461AC.4,800.002,212,800WasteExcavtion1,162,740C.Y.4.004,650,960CommonExcavation722,200C.Y.3.502,527,700RockExcavation168,960C.Y.12.002,027,520Borrow29,000C.Y.5.00145,00018"Culverts15,950L.F.24.00382,80036"+CulvertsL.S.-63,100Fabric65,378S.Y.2.50163,445ThawPipes16,450L.F.36.00592,200TopSoil&Seed320A.C.3,000.00960,000Bridges41,820S.F.300.0012,546,000Subballast421,296C.Y.7.002,949,072Trackage(Inchl.2sid-ingsand4switches228,300L.F.120.0027,396,000Railhead(Watana)1ea.5,160,000.005,160,000TOTAL$61,776,597r26/b36 TABLEF-8.11SUSITNAACCESSCONSTRUCTIONESTIMATESSEGMENTRailroad(entirecorridor)GOLDCREEKTODEVILCANYONSTA490+00to3,545+00305,500L.F.=57.86Mi.ClearingWasteExcavtionCommonExcavationRockExcavationBorrow18"Culverts36"+CulvertsFabricThawPipesTopSoil&SeedBridgesSubballastTrackage(Inchl.2sid-ingsand4switchesRailhead(ateachdam)TOTALr26/b37Quantity618AC.1,539,220C.Y.1,057,520C.Y.171,160C.Y.137,500C.Y.24,950L.F.L.S.68,499S.Y.26,550L.F.421A.C.41,820S.F.587,963C.Y.318,900L.F.2ea.UnitPrice4,800.004.003.5012.005.0024.002.5036.003,000.00300.007.00120.005,160,000.00Total2,961,6006,156,8803,701,3202,053,920687,500598,800156,200171,248955,8001,263,00012,546,0004,115,74138,268,00010,320,000$83,956,009 TABLEF-8.12SUSITNAD&CCOSTSA-1A-2A(#1)SUBTOTAL-ITEMIZEDCONSTR.COST=XMobilization=.IXSurveys= .IXCamp=.IXContingency=.2XTOTALCONSTRUCTIONCOST=1.5XDesignFee=F=5%Constr.Cost=.075XDesignSurvey=.10F=.0075XDesignSoils=.15F=.01125XConstructionInspection=.80F=.06XQualityControl=.15F=.01125XTOTALDESIGNCOSTS=.165XTOTALD&CCOSTS=1.665Xsusi9/e1$39,029,8323,902,9833,902,9833,902,9837,805,96648,544,7472,927,237292,723439,0862,341,790439,086$6,439,922$64,984,669$35,502,2803,550,2283,550,2283,550,2287,100,45653,253,4202,662,671266,267399,4002,130,137399,400$5,856,876$59,111,296$74,532,1127,453,2117,453,2117,453,21114,906,422111,798,1675,558,908558,991838,4864,471,927838,486$12,297,798$124,095,965 TABLEF-8.13SUSITNAD&CCOSTSB-1B-2B-3B(#2)SUBTOTAL-ITEMIZEDCONSTR.COST=X$30,085,712 $11,541,409$53,351,949$94,979,070Mobilization=.IX3,008,5711,154,1415,335,1959,497,907Surveys= .IX3,008,5711,154,1415,335,1959,497,907Camp=.IX3,008,5711,154,1415,335,1959,497,907Contingency=.2X6,017,1422,308,28210,670,39018,995,814TOTALCONSTRUCTIONCOST=1.5x45,128,56817,312,11480,027,924142,468,605DesignFee=F=5%TotalConstr.Cost=.075x2,256,428865,6064,001,3967,123,430DesignSurvey=.10F=.0075x225,64386,561400,140712,343DesignSoils=.15F=.01125x338,464129,841600,2091068,515ConstructionInspection=.80F=.06x1,805,143692,4843,201,1175,698,744QualityControl=.15F=.01125x338,464129,841600,2091,068,514TOTALDESIGNCOSTS=.165x$4,964,142$1,904,332$8,803,071$15,671,547TOTALD&CCOSTS=1.665x$50,092,710 $19,216,446$88,830,995$158,140,152susi9/e2 susi9/e3TABLEF-8.14SUSITNAD&CCOSTSSUBTOTAL-ITEMIZEDCONSTR.COST=XMobilization=.IXSurveys=.IXCamp=.IXContingency=.2XTOTALCONSTRUCTIONCOST=1.5XDesignFee=F=5%Constr.Cost=.075XDesignSurvey=.10F=.0075XDesignSoils=.15F=.01125XConstructionInspection=.80F=.06XQual.Control=.15F=.01125XTOTALDESIGNCOSTS=.165XTOTALD&CCOSTS=1.665XC$52,372,7265,237,2735,237,2735,237,27310,474,54578,559,0903,927,955392,795589,1933,142,364589,193$8,641,500$87,200,590 TABLEF-8.15SUSITNAD&CCOSTSR-1R-2R(RR)SUBTOTAL-ITEMIZEDCONSTR.COST=X$22,179,412$61,776,597$83,956,009Mobilization=.IX2,217,9416,177,6608,395,601Surveys=.IX2,217,9416,177,6608,395,601Camp=.IX2,217,9416,177,6608,395,601Contingency=.2X4,435,88212,355,31916,791,202TOTALCONSTRUCTION COST=1.5x33,269,11792,664,896125,934,014DesignFee=F=5%Constr.Cost=.075x1,663,4564,633,2456,296,701DesignSurvey=.10F=.0075x166,346463,324629,670DesignSoils=.15F=.01125x249,518694,987944,505ConstructionInspection=.80F=.06x1,330,7653,706,5965,037,361QualityControl=.15F=.01125x249,518694,987944,505TOTALDESIGNCOSTS$3,659,603$10,193,139$13,852,742TOTALD&CCOSTS$36,928,720$102,858,034$139,786,755susi9/e4 F.9-MaintenanceCostsThecostofmaintainingthetransportationfacilitiescanbesignficantoveraperiodofyears.ThesecostsaretabulatedbelowbasedonDepartmentofTransportationandPublicFacilitiesaverageannualcostsof$10,000permonth.TABLEF-9.1MAlNTENANCECOSTSPlanSectionFactorLengthAnnualCostYearsUsedTotalCost1B-11.013.26$132,60015$1,989,000B-21.212.31147,720152,215,800B-31.336.46473,98083,791,840$7,996,6402R-10.516.2981,45015$1,221,750R-20.741.57290,99082,327,920$3,549,6703B-11.013.26132,6007$928,200B-21.212.31147,72071,034,040C0.844.32354,56082,836,480DenaliHwy.0.821.00168,000'81,344,000$6,142,7204 C0.844.32354,5608$2,836,480DenaliHwy.0.821.00168,00081,344,000R-10.516.2981,4507570,150$4,750,6305B-11.013.26132,60015$1,989,000B-21.212.31147,720152,215,800A-21.041.25412,50083,300,000$7,504,8006 C0.844.32354,5608$2,836,480DenaliHwy.0.821.00168,00081,344,000R-10.516.2981,4507570,150A-21.041.25412,5007..b887,500$7,638,130r26/b38 7C0.844.32354,5608DenaliHwy.0.821.00168,0008B-11.013.26132,6007B-21.212.31147,7207A-21.041.25412,5007$2,836,4801,334,000928,2001,034,0402,887,500$9,030,2208B-2A-21.21.012.3141.25147,720412,500157$2,215,8002,887,500$5,103,300F.10 -LogisticsCostsThelogisticcostsarethecostsdirectlyassociatedwithmovementoffreight.TableF.10-1tabulatestherailroadcostsassociatedwithWatana.TableF.10-2tabulatestherailroadcostsassociateswithDevilCanyon.TableF.l0-3tabulatesthetruckhaulcostsforbothdams.TableF.10-4showsthecombinedlogisticcostsforallplans.r26/b39 WATANALOGISTICBREAKDOWNTableF-l0.lRailBargeContainerBargeWhittier(Anchorage)_RailRoad16Mi.149Mi.Gold42Mi.56Mi.62Mi.AnchorageCreekDevilGoldWhittiertotoCanyonCreekCostCostCosttoGoldDevilto toTons$/tonCost$/tonCost$/tonMi.AnchorageCreek~onWatanaCantwellConst.Equimpment16,000120.00$1,920,0000.1878186,298447,71548,077126,202168,269Explosives20,00055.001,100/000--0.6267777,1081,867,566200,544526,428701,904Cement350,00055.0019,250,0000.15653/396,0508,161,475876,4002,300,5503,067,400Rein.Steel33,00055.001,815,000--0.2577527,2541,267,111136,066357,172476,230RockBolts12,50055.00687,5000.2577199,718479,96651,540135,293 180,390SteelSupport3,60055.00198,000--0.257757,519138,23014,84338,96451,952Mics.,str./elc.equip.15,00055.00825,0000.1262117,366282,05730,28879,506 106,008Constr.Fuel300,00055.0016,500,0000.14502,697,0006,481,500696,0001,827,0002,436,000CampFuel51,00055.002,805,000--0.1450458,4901/101,855118,320310,590414,120Tires&Parts21,800-80.001,744,0000.1878610,00265,505171,950229,266CampSupplies74,600--80.005,968,0000.12621,402,763.150,632395,410527,213Village1,400-80.00112,0000.126226,3252,8277,4219,894Contingency&Misc.196,600-80.0015,728,0000.12623,696,827396,9751,042,0591,389,4121/095,50045,100,50023,552,0008,416,80325,963,3922,788,0177/318,5459,758,05812345 67susi9/fl DEVILCANYONLOGISTICBREAKDOWNTableFl0.2RailBargeContainerBargeWhittier(Anchorage)RailRoad16Mi.149Mi.Gold62Mi.AnchorageCreekWhittiertotoCostCostCosttoGoldDevilTons$/tonCost$/tonCost$/tonMi.AnchorageCreek~onCanst.Equimpment5,000120.00$600,000-.187858,218139,91115,024Explosive3,00055.00165,000-.6267116,566280,13530,082Cement650,00055.0035/750,000.15656,306,95015,157/0251,627,600Rein.Steel22,00055.001,210,000- -.2577351,503844,74190,710RockBolts3,00055.00165,000-.257747,932115,19212,370SteelSupport2,20055.00121,000-.257735,15084,4749,071Mics.,str.,elc.equip.13,50055.00742,500--.1262105,629253,85127,259Constr.Fuel68,00055.003,740,000-.1450611,3201,469,140157,760CampFuel30,00055.001,650,000- -.1450269,700648,15069,600Tires&Parts18,700-80.001,496,000.18780523,26759,190CampSupplies44,000-80.003,520,000.12620827,36788,845Village1,300--80.00104,000.1262°24,4452,625Contingency&Misc.205,900--80.0016,472,000.1262°3,871,702415,753--1,066,600$44,143,500 $21,592,0007/902,96824,239,4002,602,88989101112susi9/f2 ROADHAULSEGMENTCOSTSF.10-3GoldCreekDevilDeviltoCanyonCanyonDeviltoCantwelltoCanyonWatanatoWatana$/tonMi.12Mi.36Mi.Watana41Mi.ItemTonsRate(B-2)(B-3)65Mi.NorthAllWatana1,095,500.20692,719,9078,159J2214,732,8329,293,01715161718AllDevil1,066,600.20692,648,15419susi9/f3 LOGISTICSTOTALSTableF.10-4TOTALTOTALTOTALPlan5&8:Use:Water:1,2,8,9RailtoGoldCreek:3,4,10,11TrucktoDevilCanyon:15,19NorthsideTrucktoWatana18$134,388,00066,522,56313,527,783$214,438,346$134,388,00066,522,56312,709,451$213,620,014$134,388,00066,523,5639,758,05814,732,8322,648,154$228,050,607$134,388,00066,522,5639,758,0582,602,88914,732,832$228,004,342$134,388,00066,522,5635,368,0619,293,017$215,571,641TOTALTOTALUse:Water:1,2,8,9RailtoGoldCreek:3,4,10,11RailtoDams:12,5,6Use:Water:1,2,8,9RailtoGoldCreek:3,4,10,11TrucktoDams:15,16,19Plan3&7:Use:Water:1,2,8,9RailtoGoldCreek:3,4,10,11RailtoCantwell:7TrucktoWatanafromCantwell:17TrucktoDevilCanyonviaGoldCreek:Plan4&6:Use:Water:1,2,8,9RailtoGoldCreek:3,4,10,11RailtoCantwell:7RailtoDevil12TrucktoWatanafromCantwell17Plan2:Plan1:r26/b40