Transcription of Appendix H Erosion and Sedimentation Control Plan
1 Appendix H Erosion and Sedimentation Control plan PoD Erosion and Sedimentation Control plan Donlin Gold Project Donlin Gold i December 2013 Appendix H Erosion and Sedimentation Control plan PoD Erosion and Sedimentation Control plan Donlin Gold Project Table of Contents Donlin Gold ii December 2013 Table of Contents_____ Introduction .. 1 Purpose and Goal .. 3 Responsibilities .. 3 Project Overview .. 3 Project Description .. 3 Project Schedule .. 4 Control Measures .. 6 Common Erosion and Sediment Control Best Management Practices .. 6 Mulching .. 7 Soil Roughening .. 7 Silt Fence Sediment Barrier .. 7 Silt Curtain .. 7 Wattles .. 8 Rolled Erosion Control Products .. 8 Slope Breakers .. 8 Brush Berms .. 8 Trench Breakers.
2 9 Dust Control Watering .. 9 Rock Energy Dissipaters .. 9 General Construction Best Management Practices .. 9 Clearing of Pipeline Right of Way and Support Areas .. 10 Construction, Pipe Installation, and Cleanup .. 10 Dewatering .. 11 Revegetation .. 12 Off-Road Vehicle Access Management .. 12 Permafrost and Thaw-Unstable Soil .. 13 Water Body and Wetland .. 14 16 Horizontal Directional Drilling .. 17 Temporary Soil Stockpiles .. 18 Water Approach Soil Stockpiles .. 18 Ice-Rich Spoil Stockpiles .. 19 Brush Stockpiles .. 19 Snow Stockpiles .. 19 Pipeline Construction Facilities Best Management Practices .. 19 Material Borrow Sites .. 20 Pig Launching and Receiving Sites .. 20 Pipeline Support Areas .. 20 Temporary Pipeline Construction Campsites.
3 20 Temporary Water Wells .. 21 Temporary Water Withdrawal Sites .. 21 Temporary Airstrips and Existing Airports .. 21 Temporary Pipe Storage Yards .. 22 Temporary Access Roads .. 22 Temporary Barge Landings .. 23 PoD Erosion and Sedimentation Control plan Donlin Gold Project Donlin Gold iii December 2013 Electric Transmission Line Right of Way .. 23 Fiber Optic Cable Right of Way .. 23 Inspection, Maintenance, and Corrective Action .. 23 Estimated Schedule .. 24 Inspection Locations .. 24 Site Inspection and Maintenance .. 24 General Site Evaluation .. 24 Inspection of Erosion and Sedimentation Controls .. 26 Corrective Action 26 Reporting .. 26 Inspection Reporting .. 26 Record-Keeping .. 26 References .. 27 Figures_____ Figure 1-1: Project Location Map.
4 2 Tables_____ Table 2-1: Spread Execution Sequence .. 5 Table 4-1: Estimated Erosion and Sediment Control Inspection Schedule .. 25 Attachments_____ Attachment 1: Engineering Typicals PoD Erosion and Sedimentation Control plan Donlin Gold Project Appendix H Donlin Gold 1 December 2013 Introduction Donlin Gold LLC (Donlin Gold) proposes to construct a natural gas pipeline to support its proposed Donlin Gold mine project. The pipeline would use a 14-inch (356 mm) nominal pipe size to transport natural gas approximately 315 miles (507 km) from the ENSTAR Natural Gas Company s 20-inch (508 mm) Beluga gas pipeline near Beluga, Alaska, the pipeline s point of origin, to the mine site near Crooked Creek, its point of termination. Figure 1-1 shows a location map for the proposed Donlin Gold natural gas pipeline project, also referred to as the proposed pipeline project or pipeline.
5 Donlin Gold has prepared this Erosion and Sedimentation Control (ESC) plan to minimize Erosion and Sedimentation related to construction, operation, maintenance, and termination of the gas pipeline project, and to the transport of sediment off the right of way (ROW) and temporary ancillary use areas and into streams, wetlands, and other sensitive areas. Title 40 Code of Federal Regulations (CFR) Part (a)(2) exempts the National Pollution Discharge Elimination System (NPDES) permit requirements for storm water discharges of sediment from construction activities associated with transmission facilities, unless the facility has a storm water discharge of a reportable quantity of oil or hazardous substances. However, the use of best management practices (BMPs) is encouraged, to protect surface waters during storms and to ensure that no discharge of reportable quantities or violation of the water quality standard occurs.
6 This pipeline project-wide ESC plan was modeled after the Alaska Pollution Discharge Elimination System (APDES) permitted under the Alaska Construction General Permit (ACGP) by the Alaska Department of Environmental Conservation (ADEC). This plan addresses Erosion and sediment Control only as they apply to the natural gas pipeline portion of the proposed Donlin Gold mine project. This ESC plan is preliminary, based on the current level of pipeline construction and engineering design. This plan will be revised in the future as needed to meet construction and engineering design changes and the regulatory requirements of the ACGP. !^!!!!!!!!!!!!!NorthForkKuskokwimRiverSt onyRiverMulchatnaRiverTonzonaRiverWindyF orkSouthForkKuskokwimRiverChulitnaRiverL ittleTonzonaRiverEastForkYentnaRiverJohn sonCreekSkwentnaRiverTsusenaCreekPortage CreekChuitnaRiverKustatanRiverCurrantCre ekKijikRiverTlikakilaRiverChilliganRiver KatlitnaRiverIditarodRiverBigYetnaRiverR eindeerRiverNushagakRiverHoholitna LakeTustumenaLakeLakeClarkUpnukLakeTurqu oise LakeTelaquana LakeCongahbuna LakeKoluktak LakesSquare LakeSkilak LakeBig LakeNancy LakeHorseshoeLakeWhitefish LakeTundraLakeTwoLakesTwinLakesSnipeLake FishtrapLakeSummitLakeKenibunaLakeChakac hamnaLakeCrescentLakeKontrashibuna LakeSixmileLakeWilsonLakeKisaralikLakeSt randlineLakeTrapperLakeGuitarLakeChelatn aLakeStephanLakePaxson LakeFishLakeMiddleLakeKlutinaLakeTonsina LakeKenai
7 LakeUpperTrailLakeShellLakeBelugaLakeBig RiverLakesReindeer LakeNishlikLakeCrescent LakeKuskokwimRiverCook InletInnoko National Wildlife RefugeDenali National Park & PreserveLake Clark National Park & PreserveDONLIN GOLD PROJECTK enai NationalWildlife RefugeDenali State Park&PROPOSED NATURALGAS PIPELINE PROJECTMP-315MP-175MP-25MP-300MP-0MP-275 MP-225MP-100MP-75MP-200MP-150MP-50MP-125 MP-250 AnchorageGeorgetownPetersvilleSalamatofN ikiskiIditarodCooperLandingWasillaHousto nKnikSusitnaWillowKasilofKenaiSoldotnaHo peTyonekTalkeetnaFlatCrookedCreekSleetmu teStonyRiverLimeVillageRedDevilMcGrathTa kotnaOphirNikolaiMedfraBelugaPoint MacKenzieFarewellLOCATION of PROPOSED NATURAL GAS PIPELINE PROJECTFIGURE:SCALE:KDG: , 10/29/13, R08 DONLIN GOLD PROJECT1-1(!^GulfofAlaskaBering SeaChukchi SeaBeaufort SeaP A C I F I C O C E A NA R C T I C O C E A NRUSSIACANADAALASKA( )NOMEVALDEZKODIAKBARROWBETHELANCHORAGEFA IRBANKSDILLINGHAMC hukchi SeaALASKA( ))
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