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HomeMy WebLinkAbout20140957 Ver 1_RR2_20150710� " "ml�s�w ndc ATLANTIC COAST PIPELINE, LLC On't ATLANTIC COAST PIPELINE Plpeli n e Docket No. PF15 -6 -000 and DOMINION TRANSMISSION, INC. SUPPLY HEADER PROJECT Docket No. PF15 -5 -000 Resource Report 2 Water Use and Quality Draft Resource Report 2 Water Use and Quality Summary of Required Federal Energy Regulatory Commission Report Information Minimum Filing Requirements: Report Section Reference 1. Identify all perennial surface waterbodies crossed by the proposed project and their water quality Sections 2.2.2 and 2.2.5; classification. (§ 380.12(d)(1)) Appendix 2A • Identify by milepost • Indicate if potable water intakes are within 3 miles downstream of the crossing. 2. Identify all waterbody crossings that may have contaminated waters or sediments. (§ 380.12(d)(1)) Section 2.2.4; Appendix 2B • Identify by milepost. • Include offshore sediments. 3. Identify watershed areas, designated surface water protection areas, and sensitive waterbodies crossed Sections 2.2.1, 2.2.5, and 2.2.8; by the proposed project. (§380.12(d)(1)) Tables 2.2.1 -1; Appendix 2C • Identify by milepost. 4. Provide a table (based on NWI maps if delineations have not been done) identifying all wetlands, by Tables 2.3.4 -1, 2.3.4 -2 and 2.3.4 - milepost and length, crossed by the proposed project (including abandoned pipeline), and the total 3; Appendix 2G acreage and acreage of each wetland type that would be affected by construction. (§ 380.12(d)(1 &4)) 5. Discuss construction and restoration methods proposed for crossing wetlands, and compare them to Sections 1.5.2.2, 2.3.5, and 2.3.6 staff s Wetland and Waterbody Construction and Mitigation Procedures. (§ 380.12(d)(2)) 6. Describe the proposed waterbody construction, impact mitigation, and restoration methods to be used to Sections 1.5.2.1, 2.2.9, and 2.2. 10 cross surface waters and compare to the staff s Wetland and Waterbody Construction and Mitigation Procedures. (§ 380.12(d)(2)) • Although the Procedures do not apply offshore, the first part of this requirement does apply. Be sure to include effects of sedimentation, etc. This information is needed on a mile -by -mile basis and will require completion of geophysical and other surveys before filing. (See also Resource Report 3.) 7. Provide original National Wetlands Inventory (NWI) maps or the appropriate state wetland maps, if Appendix 2F NWI maps are not available, that show all proposed facilities and include milepost locations for proposed pipeline routes. (§ 380.12(d)(4)) 8. Identify all U.S. Environmental Protection Agency (EPA) — or state - designated aquifers crossed. (§ Sections 2.1.2, 2.1.2, 2.1.4 and 380.12(d)(9)) 2.1.4; Tables 2.1.1 -1, 2.1.3 -1, • Identify the location of known public and private groundwater supply wells or springs within 150 2.1.3 -2, 2.1.3 -3, and 2.1.4 -1; feet of construction. Figure 2.1 Additional Information: Identify proposed mitigation for impacts on groundwater resources. Discuss the potential for blasting to affect water wells, springs, and wetlands, and associated mitigation. Identify all sources of hydrostatic test water, the quantity of water required, methods for withdrawal, and treatment of discharge, and any waste products generated. If underground storage of natural gas is proposed, identify how water produced from the storage field will be disposed. If salt caverns are proposed for storage of natural gas, identify the source locations, the quantity required, the method and rate of water withdrawal, and disposal methods. For each waterbody greater than 100 feet wide, provide site - specific construction, mitigation, and restoration plans. Indicate mitigation measures to be undertaken to ensure that public or private water supplies are returned to their former capacity in the event of damage resulting from construction. Describe typical staging area requirements at waterbody and wetland crossings. If wetlands would be filled or permanently lost, describe proposed measures to compensate for permanent wetland losses. If forested wetlands would be affected, describe proposed measures to restore forested wetlands following construction. Describe techniques to be used to minimize turbidity and sedimentation impacts associated with offshore trenching, if any. 2 -I Report Section Reference Section 2.1.6 Sections 2.1.6, 2.2.10, and 2.3.5 Section 2.2.6; Table 2.2.6 -1 Not applicable Not applicable Section 2.2.2; Table 2.2.2 -2; Appendix 1Gin Resource Report 1 Section 2.1.6 Sections 2.2. 10 and 2.3.5 Section 2.3.6 Section 2.3.6 Not applicable Resource Report 2 TABLE OF CONTENTS Water Use and Quality 2.0 RESOURCE REPORT 2 — WATER USE AND QUALITY ...... ............................... 2 -1 2.1 GROUNDWATER RESOURCES ....................................... ............................... 2 -3 2.1.1 Principal Aquifers ..................................................... ............................... 2 -3 2.1.1.1 Pennsylvanian and Early Mesozoic Basin Aquifers ................... 2 -4 2.1.1.2 Mississippian and Valley and Ridge Aquifers ........................... 2 -4 2.1.1.3 Piedmont and Blue Ridge Crystalline -rock Aquifers ................. 2 -7 2.1.1.4 North Atlantic Coastal Plain Aquifer System ............................ 2 -7 2.1.2 Designated Sole or Principal Source Aquifers .......... ............................... 2 -8 2.1.3 Water Supply Wells .................................................. ............................... 2 -9 2.1.3.1 Public Wells ................................................ ............................... 2 -9 2.1.3.2 Private Wells ............................................. ............................... 2 -10 2.1.3.3 Wellhead Protection Areas ........................ ............................... 2 -11 2.1.4 Springs .................................................................... ............................... 2 -12 2.1.5 Contaminated Groundwater .................................... ............................... 2 -12 2.1.6 Groundwater Construction Related Impacts and Mitigation ................. 2 -15 2.1.7 Facility Operations ...................................................... ...........................2 -17 2.2 SURFACE WATER RESOURCES ................................... ............................... 2 -17 2.2.1 Existing Watersheds ................................................ ............................... 2 -17 2.2.2 Waterbodies Crossed .............................................. ............................... 2 -19 2.2.3 Surface Water Standards and Classifications ......... ............................... 2 -21 2.2.3.1 West Virginia Surface Water Classifications ........................... 2 -21 2.2.3.2 Virginia Surface Water Classifications ..... ............................... 2 -22 2.2.3.3 North Carolina Surface Water Classifications ......................... 2 -23 2.2.3.4 Pennsylvania Surface Water Classifications ............................ 2 -23 2.2.4 Contaminated Waters or Sediments ........................ ............................... 2 -24 2.2.5 Public Surface Water Intakes and Surface Water Protection Areas ...... 2 -25 2.2.6 Horizontal Directional Drill Mud Water Use ......... ............................... 2 -27 2.2.7 Hydrostatic Test Water Withdrawal and Discharge .............................. 2 -28 2.2.8 Sensitive Surface Waters ........................................ ............................... 2 -28 2.2.9 Waterbody Construction Procedures ...................... ............................... 2 -29 2.2.10 Waterbody Construction - Related Impacts and Mitigation .................... 2 -29 2.2.11 Facility Operations ...................................................... ...........................2 -32 2.3 WETLANDS ........................................................................... ...........................2 -33 2.3.1 Wetland Types ........................................................ ............................... 2 -33 2.3.2 Existing Wetland Resources ................................... ............................... 2 -33 2.3.3 Wetland Reserve Program ...................................... ............................... 2 -34 2.3.4 Wetland Crossings .................................................. ............................... 2 -34 2.3.4.1 Pipeline Facilities ...................................... ............................... 2 -34 2.3.4.2 Aboveground Facilities ............................. ............................... 2 -38 2.3.4.3 Access Roads ............................................. ............................... 2 -38 2.3.4.4 Pipe Storage and Contractor Yards ........... ............................... 2 -38 2.3.5 Wetland Crossing Methods ..................................... ............................... 2 -38 2.3.6 Wetland Impacts and Mitigation ............................. ............................... 2 -40 2.3.6.1 Wetland Vegetation ....................................... ...........................2 -42 2.3.6.2 Compaction and Topsoil Mixing ............... ............................... 2 -42 2 -ii Resource Report 2 Water Use and Quality 2.3.6.3 Wetland Hydrology ................................... ............................... 2 -43 2.3.6.4 Erosion and Sediment Control .................. ............................... 2 -43 2.3.6.5 Hazardous Material Spills ......................... ............................... 2 -43 2.3.6.6 Blasting .......................................................... ...........................2 -44 2.3.6.7 Permanent Wetland Fill ............................. ............................... 2 -44 2.3.7 Compensatory Mitigation ....................................... ............................... 2 -44 2.4 REFERENCES ................................................................... ............................... 2 -45 LIST OF TABLES Table 2.1.1 -1 Aquifers Crossed by the Atlantic Coast Pipeline and Supply Header Project ..... 2 -6 Table 2.1.3 -1 Public Water Supply Wells Within 150 Feet of the Atlantic Coast Pipeline 2 -iii andSupply Header Project ....................................................... ............................2 -9 Table 2.1.3 -2 Private Water Wells Within 150 Feet of the Atlantic Coast Pipeline and SupplyHeader Project ............................................................ ...........................2 -10 Table 2.1.3 -3 Wellhead Protection Areas Crossed by the Atlantic Coast Pipeline and Supply HeaderProject ......................................................................... ...........................2 -11 Table 2.1.4 -1 Springs Located Within 150 Feet of the Atlantic Coast Pipeline and Supply HeaderProject ......................................................................... ...........................2 -12 Table 2.1.5 -1 Contaminated Sites, Landfills, and Leaking Underground Storage Tanks Near the Atlantic Coast Pipeline and Supply Header Project ............................ 2 -13 Table 2.2.1 -1 Watersheds Crossed by the Atlantic Coast Pipeline and Supply Header Project................................................................................. ............................... 2 -18 Table 2.2.2 -1 Waterbodies Affected by the Atlantic Coast Pipeline and Supply Header Project................................................................................. ............................... 2 -20 Table 2.2.2 -2 Major Waterbodies Crossed by the Atlantic Coast Pipeline and Supply HeaderProject ......................................................................... ...........................2 -20 Table 2.2.2 -3 Waterbodies Crossed by the Atlantic Coast Pipeline on Federal Lands............ 2 -21 Table 2.2.5 -1 Surface Water Intake Facilities within 3.0 Miles of the Atlantic Coast Pipeline and Supply Header Project ....................................... ...........................2 -26 Table 2.2.5 -2 Water Source Watersheds Crossed by the Atlantic Coast Pipeline in North Carolina............................................................................... ............................... 2 -26 Table 2.2.6 -1 Water Requirements for Horizontal Directional Drills for the Atlantic Coast Pipeline............................................................................... ............................... 2 -27 Table 2.2.7 -1 Water Requirements for Hydrostatic Testing for the Atlantic Coast Pipeline andSupply Header Project ...................................................... ...........................2 -28 Table 2.3.4 -1 Summary of Wetland Types Affected by Construction and Operation of the Atlantic Coast Pipeline and Supply Header Project ........... ............................... 2 -36 Table 2.3.4 -2 Summary of Wetland Types Affected by Construction and Operation of the Atlantic Coast Pipeline on Federal Lands ........................... ............................... 2 -37 Table 2.3.4 -3 Summary of Wetlands Affected by Access Road Construction for the Atlantic Coast Pipeline and Supply Header Project ........... ............................... 2 -39 2 -iii Resource Report 2 Water Use and Quality LIST OF FIGURES Figure 2.1.1 -1 Principal Aquifers ................................................................. ............................... 2 -5 LIST OF APPENDICES Appendix 2A Waterbodies Crossed and Crossing Methods for the Atlantic Coast Pipeline and Supply Header Project Appendix 2B Impaired Waterbodies Crossed by the Atlantic Coast Pipeline and Supply Header Project Appendix 2C Sensitive Waterbodies Crossed by the Atlantic Coast Pipeline and Supply Header Project Appendix 2D Wetland and Waterbody Delineation Reports — Atlantic Coast Pipeline (to be filed in a supplemental filing or with the final Resource Report 2) Appendix 2E Wetland and Waterbody Delineation Reports — Supply Header Project (to be filed in a supplemental filing or with the final Resource Report 2) Appendix 2F National Wetland Inventory Maps — Atlantic Coast Pipeline and Supply Header Project Appendix 2G Wetlands Crossed and Crossing Methods for the Atlantic Coast Pipeline and Supply Header Project 2 -iv Resource Report 2 Water Use and Quality LIST OF ACRONYMS AND ABBREVIATIONS ACEP Agricultural Conservation Easement Program ACP Atlantic Coastline Pipeline ACRES Assessment, Cleanup, and Redevelopment Exchange System AGL AGL Resources, Inc. Atlantic Atlantic Coast Pipeline, LLC ATWS Additional Temporary Workspace bcf /d billion cub feet per day CERCLIS Comprehensive Environmental Response, Compensation, and Liability Information System Certificate Certificate of Public Convenience and Necessity CFR Code of Federal Regulations Commission Federal Energy Regulatory Commission CSR Code of State Regulation CWF Cold Water Fisheries Dominion Dominion Resources, Inc. Dth /d dekatherms per day DTI Dominion Transmission, Inc. Duke Energy Duke Energy Corporation EPA U.S. Environmental Protection Agency ER Environmental Report FERC Federal Energy Regulatory Commission GIS geographic information system gpd gallons per day HDD horizontal directional drill HQ high quality waters HUC hydrological unit code LUST leaking underground storage tank M &R metering and regulating MP milepost NCAC North Carolina Administrative Code NCDENR -DWR North Carolina Department of Environment and Natural Resources — Division of Water Resources NHD National Hydrography Dataset NPDES National Pollutant Discharge Elimination System NRCS National Resources Conservation Service NRI Nationwide Rivers Inventory NWI National Wetlands Inventory PADEP Pennsylvania Department of Environmental Protection PEM palustrine emergent wetland PFO palustrine forested wetland Piedmont Piedmont Natural Gas Co., Inc. Plan Upland Erosion Control, Revegetation, and Maintenance Plan Procedures Wetland and Waterbody Construction and Mitigation Procedures Projects Atlantic Coast Pipeline and Supply Header Project PSS palustrine scrub -shrub wetland 2 -v Resource Report 2 Water Use and Quality SHP Supply Header Project SPCC Plan Spill, Prevention, Control, and Countermeasures Plan USACE U.S. Army Corps of Engineers USDA U.S. Department of Agriculture USDOT U.S. Department of Transportation USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey VAC Virginia Administrative Code VDEQ Virginia Department of Environmental Quality VDH -ODW Virginia Department of Health — Office of Drinking Water VLIS Virginia's Legislative Information System WPA wellhead protection area WVCSR West Virginia Code of State Regulations WVDEP West Virginia Department of Environmental Protection WVDHHR West Virginia Department of Health and Human Resources ZCC Zone of Critical Concern 2 -vi ATLANTIC COAST PIPELINE — Docket No. PF15 -6 -000 and SUPPLY HEADER PROJECT — Docket No. PF15 -5 -000 2.0 RESOURCE REPORT 2 — WATER USE AND QUALITY Atlantic Coast Pipeline Atlantic Coast Pipeline, LLC (Atlantic) is a company formed by four major U.S. energy companies — Dominion Resources, Inc. (Dominion; NYSE: D), Duke Energy Corporation (Duke Energy; NYSE: DUK), Piedmont Natural Gas Co., Inc. (Piedmont; NYSE: PNY), and AGL Resources, Inc. (AGL; NYSE: GAS). The company was created to develop, own, and operate the proposed Atlantic Coast Pipeline (ACP), an approximately 556- mile -long, interstate natural gas transmission pipeline system designed to meet growing energy needs in Virginia and North Carolina. The ACP will be capable of delivering 1.5 billion cubic feet per day (bcf /d) 1 of natural gas to be used to generate electricity, heat homes, and run local businesses. The underground pipeline Project will facilitate cleaner air, increase the reliability and security of natural gas supplies, and provide a significant economic boost in West Virginia, Virginia, and North Carolina. More information is provided at the company's website at www.dom.com /acpipeline. Atlantic has contracted with Dominion Transmission, Inc. (DTI), a subsidiary of Dominion, to permit, build, and operate the ACP on behalf of Atlantic. 2 Atlantic is seeking authorization from the Federal Energy Regulatory Commission (FERC or Commission) under Section 7(c) of the Natural Gas Act to construct, own, operate, and maintain the following proposed facilities for the ACP: Mainline Pipeline Facilities: AP -1: approximately 292.8 miles of 42 -inch outside diameter natural gas transmission pipeline in Harrison, Lewis, Upshur, Randolph, and Pocahontas Counties, West Virginia; Highland, Augusta, Nelson, Buckingham, Cumberland, Prince Edward, Nottoway, Dinwiddie, Brunswick, and Greensville Counties, Virginia; and Northampton County, North Carolina. AP -2: approximately 181.5 miles of 36 -inch outside diameter natural gas transmission pipeline in Northampton, Halifax, Nash, Wilson, Johnston, Sampson, Cumberland, and Robeson Counties, North Carolina. Lateral Pipeline Facilities: AP -3: approximately 77.6 miles of 20 -inch outside diameter natural gas lateral pipeline in Northampton County, North Carolina; and Greensville and Southampton Counties and the Cities of Suffolk and Chesapeake, Virginia. The 1.5 bcf/d is equivalent to approximately 1.5 million dekatherms per day (Dth/d). The bcf/d unit of measurement is used to refer to the capacity of the ACP system. The Dth/d measurement is used to refer to contractual obligations (as set forth in Table 1.2 -1). 2 As described in this report, DTI actions associated with the ACP are on behalf of Atlantic. 2 -1 Resource Report 2 Water Use and Quality AP -4: approximately 3.1 miles of 16 -inch outside diameter natural gas lateral pipeline in Brunswick County, Virginia. AP -5: approximately 1.0 mile of 16 -inch outside diameter natural gas lateral pipeline in Greensville County, Virginia. Compressor Station Facilities: Compressor Station 1: a new, natural gas -fired compressor station approximately at milepost (MP) 6.8 of the AP -1 mainline in Lewis County, West Virginia. Compressor Station 2: a new, natural gas -fired compressor station approximately at MP 186.0 of the AP -1 mainline in Buckingham County, Virginia. Compressor Station 3: a new natural gas -fired compressor station approximately at MP 292.8 of the AP -1 mainline in Northampton County, North Carolina. Other Aboveground Facilities: Nine new metering and regulating (M &R) stations at receipt and /or delivery points along the new pipelines (including one at Compressor Station 1 and one at Compressor Station 2). Twenty -nine valve sites at select points along the new pipelines at intervals specified by U.S. Department of Transportation (USDOT) regulations at Title 49 Code of Federal Regulations (CFR) Part 192. Eight sets of pig launcher and /or receiver sites at 11 points along the new pipelines (including launcher /receiver sites at Compressor Stations 2 and 3). As required by 18 CFR 380.12, Atlantic is submitting this Environmental Report (ER) in support of its Application to the Commission for a Certificate of Public Convenience and Necessity (Certificate) to construct and operate the proposed ACP facilities. Supply Header Project DTI proposes to construct and operate approximately 36.7 miles of pipeline loop and modify existing compression facilities in Pennsylvania and West Virginia. This Project, referred to as the Supply Header Project (SHP), will enable DTI to provide firm transportation service of up to 1.5 bcf /d to various customers, including Atlantic. Atlantic will be a "Foundation Shipper" in the SHP, and will utilize the SHP capacity to allow its shippers access to natural gas supplies from various DTI receipt points for further delivery to points along the ACP. DTI is seeking authorization from the FERC under Section 7(c) of the Natural Gas Act to construct, own, operate, and maintain the following proposed facilities for the SHP: 2 -2 Resource Report 2 Pipeline Loops: Water Use and Quality TL -636: approximately 3.9 miles of 30 -inch outside diameter natural gas pipeline looping DTI's existing LN -25 pipeline in Westmoreland County, Pennsylvania. TL -635: approximately 32.8 miles of 36 -inch outside diameter natural gas pipeline looping DTI's existing TL -360 pipeline in Harrison, Doddridge, Tyler, and Wetzel Counties, West Virginia. Compressor Station Modifications: • JB Tonkin Compressor Station: modifications at DTI's existing JB Tonkin Compressor Station in Westmoreland County, Pennsylvania. • Crayne Compressor Station: modifications at DTI's existing Crayne Compressor Station in Greene County, Pennsylvania. • Burch Ridge Compressor Station: crossover piping at DTI's existing Burch Ridge Compressor Station in Marshall County, West Virginia. • Mockingbird Hill Compressor Station: modifications at or near DTI's existing Mockingbird Hill Compressor Station in Wetzel County, West Virginia. Other Aboveground Facilities: Five valve sites at select points along the new pipeline loops at intervals specified by USDOT regulations at 49 CFR 192. Two sets of pig launcher and receiver sites at the ends of each of the new pipeline loops. As required by 18 CFR 380.12, DTI is submitting this ER in support of its Application to the Commission for a Certificate to construct and operate the proposed SHP facilities. Scope of Resource Report 2 This Resource Report describes water quality and provides data sufficient to determine the expected impact of the ACP and SHP (collectively, the Projects) and the effectiveness of mitigative enhancement, or protective measures. Information provided in this Report is derived from field surveys, technical documents, publicly available data and maps, and consultation with Federal, State /Commonwealth, and local authorities. 2.1 GROUNDWATER RESOURCES 2.1.1 Principal Aquifers A principal aquifer is defined as a regionally extensive aquifer or aquifer system with the potential to be used as a source of potable water (U.S. Geological Survey [USGS], 2014a). The 2 -3 Resource Report 2 Water Use and Quality principal aquifers crossed by the proposed ACP are the Pennsylvanian, Mississippian, Valley and Ridge, Piedmont and Blue Ridge Crystalline -rock, and Early Mesozoic Basin aquifers, as well as the Northern Atlantic Coastal Plain aquifer system (USGS, 2003). The proposed SHP crosses the Pennsylvanian principal aquifer (USGS, 2003). Figure 2.1.1 -1 depicts the principal aquifers and aquifer systems crossed by the proposed Projects. Information on each aquifer is summarized in Table 2.1.1 -1. Principal aquifers are often multi - layered and may extend underground beyond the areas where they are mapped. The mapped boundaries typically represent the extent of the principal aquifer nearest to the surface (USGS, 1997). For example, the Mississippian aquifer is exposed as narrow bands along western West Virginia, but it underlies most of the Pennsylvanian aquifer Because construction of the Projects will generally occur within the upper 10 feet of the soil surface, only the shallowest principal aquifers crossed by the Projects are described below. In addition to principal aquifers, the ACP also crosses areas mapped as "other rocks." These consist of areas underlain by crystalline rocks of minimal permeability. Areas mapped as other rocks are considered minor aquifers. 2.1.1.1 Pennsylvanian and Early Mesozoic Basin Aquifers The Pennsylvanian and Early Mesozoic Basin aquifers consist of layers of consolidated sedimentary rock, of which sandstone formations are the primary water - producing units (USGS, 1997a). Sandstone retains only a small part of the intergranular pore space present before the rock was consolidated, and compaction and cementation have greatly reduced the primary pore space in the rock (USGS, 1999). Secondary openings in the rock, such as joints and fractures, along with bedding planes, contain and transmit most of the groundwater in the formation (USGS, 1999). The hydraulic conductivity of sandstone aquifers is low to moderate, but because they extend over large areas, these aquifers can provide large amounts of water (USGS, 1999). As of 2005, water withdrawals from Early Mesozoic basins aquifers were 131 million gallons per day (gpd), including 41.9 million gpd in Pennsylvania and 2.1 million gpd in Virginia (Maupin and Barber, 2005). Water withdrawals from Pennsylvanian aquifers were 132 million gpd, including 43.6 million gpd in Pennsylvania and 18.3 million gpd in West Virginia (Maupin and Barber, 2005). 2.1.1.2 Mississippian and Valley and Ridge Aquifers Mississippian aquifers mostly consist of water yielding carbonate rocks. They are considered principle aquifers in many regions of the United States, but in the ACP Project area, they are limited in geographic extent and only yield water in localized areas (USGS, 1997a). Valley and Ridge aquifers mostly consist of folded sandstone, shale, and limestone. In Virginia, these rock formations also contain coal and minor amounts of dolomite and conglomerate. In some cases, the rocks have been metamorphosed into quartzite, slate, and marble. 2 -4 Resource Report 2 Water Use and Quality 11I (l Pnndpal Aquifers Ce slle Hayne eq "fp. Pled -hand Rlue Ridge oertpnata Ilk equlTera EadyMesozpc basn aqufers Petlmontantl Blue Ridge crystalline rock aqu Ters Miasiasppian aquifers 9oo�ptheast— Coastal Plain aq fe .system VNIR!!� Noah— Atlantic Coastal Plain aq offer syal 9omcia1 aq offers A— Other�����ro cks Valley and Ridge ­if- III, OR P .... yi ...... .III... Valley and Ridge —h eq,-, ACP Mainline " Atlantic Coast Pipeline and �=m,rlr. =�•,,=xr.�a� ACP Lateral Supply Header Project WOOMMMt - SHP Pipeline Loops Figure 2.1.1 -1 ° 20 4° Miles Principal Aquifers FILE. M.A Clients�Dft DOM\ SRPPA _ArcGIS \Resource_Repofts\RREP_02 \Figures \_ DRS _ ACP_PR02Principal_Aquifers. mxd, REVISED. 04/06/2015, SCALE. 1.3,500,000 DRAWN BY THohn 2-5 Resource Report 2 Water Use and Quality TABLE 2.1.1 -1 Aquifers Crossed by the Atlantic Coast Pipeline and Supply Header Project AP -3 Northampton County 0.0 to 12.1 Northern Atlantic Coastal Plain 30 to 2100 At least 50 Semiconsolidated Sand SUPPLY HEADER PROJECT West Virginia TL -635 Wetzel, Tyler, Doddridge, and Harrison Counties 0.0 to 32.8 Pennsylvanian Sandstone 80 to 400 20 to 430 Pennsylvania TL -636 Westmoreland County 0 to 3.9 Pennsylvanian Sandstone 80 to 400 20 to 430 a Unavailable - reliable depth to aquifer data is unavailable in the Groundwater Atlas of the United States and other publicly available publications. Sources: Kozar and Brown, 1995; LeGrand, 1988; Swistock, 2007; USGS, 1996 2 -6 Range of Well Yield State or Commonwealth /Pipeline Segment/ Depth to (gallons per County or City Mileposts Aquifer Aquifer (feet) minute) ATLANTIC COAST PIPELINE West Virginia AP -1 Harrison, Lewis, Upshur, and Randolph Counties 0 to 50.5 Pennsylvanian Sandstone 80 to 400 20 to 430 61.5 to 66.5 Randolph and Pocahontas Counties 50.5 to 52.1 Mississippian Sandstone and 50 to 200 20 to 180 59.7 to 61.5 Carbonate 66.5 to 68.5 Randolph and Pocahontas Counties 52.1 to 59.7 Other rocks Unavailable a Variable 68.5 to 80.2 Virginia AP -1 Highland County 80.2 to 82.9 Other rocks Unavailable a Variable Highland and Augusta Counties 82.9 to 147.3 Valley and Ridge Sandstone and 50 to 400 Variable Carbonate Augusta, Nelson, Buckingham, Cumberland, 147.3 to 204.6 Piedmont and Blue Ridge 3 to 300 15 to 30 Prince Edward, Nottoway, Dinwiddie, Brunswick, 211.0 to 279.4 Crystalline -rock and Greensville Counties Buckingham County 204.6 to 211.0 Early Mesozoic Basin Sandstone 200 to 900 5 to 80 Greensville County 279.4 to 292.7 Northern Atlantic Coastal Plain 30 to 2100 At least 50 Semiconsolidated Sand AP -3 Greensville and Southampton Counties, City of 12.1 to 77.6 Northern Atlantic Coastal Plain 30 to 2100 At least 50 Suffolk, and City of Chesapeake Semiconsolidated Sand AP -4 Brunswick County 0.0 to 3.1 Piedmont and Blue Ridge 3 to 300 15 to 30 Crystalline -rock AP -5 Greensville County 0.0 to 1.2 Piedmont and Blue Ridge 3 to 300 15 to 30 Crystalline -rock North Carolina AP -2 Northampton, Halifax, Nash, Wilson, Johnston, 292.7 to 323.6 Northern Atlantic Coastal Plain 30 to 2100 At least 50 Sampson, Cumberland, and Robeson Counties 326.3 to 330.6 Semiconsolidated Sand 332.6 to 336.8 350.0 to 351.6 353.6 to 361.4 375.7 to 474.2 Halifax, Nash, Wilson, and Johnston Counties 323.6 to 326.3 Piedmont and Blue Ridge 3 to 300 15 to 30 330.6 to 332.6 Crystalline -rock 336.8 to 350.0 351.6 to 353.6 361.4 to 375.7 AP -3 Northampton County 0.0 to 12.1 Northern Atlantic Coastal Plain 30 to 2100 At least 50 Semiconsolidated Sand SUPPLY HEADER PROJECT West Virginia TL -635 Wetzel, Tyler, Doddridge, and Harrison Counties 0.0 to 32.8 Pennsylvanian Sandstone 80 to 400 20 to 430 Pennsylvania TL -636 Westmoreland County 0 to 3.9 Pennsylvanian Sandstone 80 to 400 20 to 430 a Unavailable - reliable depth to aquifer data is unavailable in the Groundwater Atlas of the United States and other publicly available publications. Sources: Kozar and Brown, 1995; LeGrand, 1988; Swistock, 2007; USGS, 1996 2 -6 Resource Report 2 Water Use and Quality Carbonate rocks are the most productive rock units in the Valley and Ridge aquifers (USGS, 1997b), and they are the water producing rock units of the Mississippian aquifers (USGS, 1997a). As of 2005, water withdrawals from sandstone and carbonate rocks in Mississippian aquifers were 286 million gpd, including 0.9 million gpd in West Virginia and 0.1 million gpd in Virginia (Maupin and Barber, 2005). Water withdrawals from the Valley and Ridge aquifers were 95 million gpd, including 34.2 million gpd in Virginia (Maupin and Barber, 2005). Most carbonate rocks originate as sedimentary deposits in marine environments (USGS, 1999b). Compaction, cementation, and dolomitization processes can substantially reduce the porosity and permeability of these deposits as they lithify (USGS, 1999b). The dissolution of carbonate rock by circulating, slightly acidic groundwater, however, can create solution openings ranging in size from small tubes to caverns that may be tens of meters wide and hundreds to thousands of meters long (USGS, 1999). Where saturated, carbonate rocks with well- connected networks of solution openings yield large amounts of water to wells that penetrate the openings, although the undissolved rock between the large openings may be almost impermeable (USGS, 1999b). The dissolution of carbonate rock can result in the formation of sinkholes and other karst features (USGS, 1999b). Karst terrain is discussed in more detail in Section 6.4.4 of Resource Report 6. 2.1.1.3 Piedmont and Blue Ridge Crystalline -rock Aquifers The Piedmont and Blue Ridge aquifers mostly consist of crystalline rocks (i.e., metamorphic and igneous rocks), but they also include some carbonate rocks that provide significant water yields in the region (USGS, 1997c). In fact, carbonate rocks provide the largest well yields in the Piedmont and Blue Ridge aquifers (USGS, 1997c). A description of carbonate rock aquifers is provided above (see Mississippian and Valley and Ridge Aquifers). Igneous and metamorphic rocks are only permeable where they are fractured, and they generally yield only small amounts of water to wells. Because these rocks extend over large areas, however, significant volumes of water are available from these formations. As of 2005, water withdrawals from the Piedmont and Blue Ridge carbonate -rock aquifers were 29.9 million gpd (Maupin and Barber, 2005). Water withdrawals from the Piedmont and Blue Ridge crystalline -rock aquifers were 146 million gpd, including 14.5 million gpd in Virginia and 62.6 million gpd in North Carolina (Maupin and Barber, 2005). 2.1.1.4 North Atlantic Coastal Plain Aquifer System The Northern Atlantic Coastal Plain aquifer system mostly consists of semi - consolidated sand aquifers separated by clay confining units. Unconsolidated sands compose the surficial aquifer, which is the uppermost water - yielding part of the system. These surficial aquifers are susceptible to human activities due to the shallow depth to the aquifer in some areas (USGS, 19974). Additionally, sediments in Coastal Plain aquifers are thin near their contact with rocks of the Piedmont Province, and in places do not yield as much water as the underlying igneous and metamorphic rocks associated with Piedmont aquifers (USGS, 1997). The Northern Atlantic Coastal Plain aquifer system also includes a productive carbonate rock (limestone) 2 -7 Resource Report 2 Water Use and Quality aquifer. A description of carbonate rock aquifers is provided above (see Mississippian and Valley and Ridge Aquifers). As of 2015, water withdrawals from the Northern Atlantic Coastal Plain aquifer system were 1,040 million gpd, including 90.8 million gpd in Virginia and 142 million gpd in North Carolina (Maupin and Barber, 2005). The limestone aquifer is most productive in North Carolina, where yields reached 125 million gpd in 1985 (USGS, 19974). 2.1.2 Designated Sole or Principal Source Aquifers The U.S. Environmental Protection Agency (EPA) "defines a sole or principal source aquifer as an aquifer that supplies at least 50 percent of the drinking water consumed in the area overlying the aquifer. These areas may have no alternative drinking water source(s) that could physically, legally and economically supply all those who depend on the aquifer for drinking water" (EPA, 2008). For convenience, the EPA refers to all designated sole or principal source aquifers as "sole source aquifers" (EPA, 2008). There are currently no EPA - designated sole source aquifers in West Virginia (EPA, 2008). The West Virginia Department of Environmental Protection (WVDEP) and West Virginia Department of Health and Human Resources (WVDHHR) do not designate sole source aquifers on a State level (Paucer, 2015; Shaver 2015). There are currently no EPA - designated sole source aquifers in North Carolina (EPA, 2008). The North Carolina Department of Environment and Natural Resources, Division of Water Resources (NCDENR -DWR) does not designate sole source aquifers on a State level (Johnson, 2015). The only EPA - designated sole source aquifer in Virginia is the Columbia & Yorktown - Eastover Multiaquifer System, which is across the Chesapeake Bay and over 25 miles to the northeast of the nearest ACP facility (EPA, 2007 and 2013a). The Commonwealth of Virginia regulates groundwater withdrawal within two Ground Water Management Areas that are managed by the Virginia Department of Environmental Quality (VDEQ) in accordance with the Ground Water Management Act of 1992. These management areas are outlined under Title 9 of Virginia Administrative Code (VAC) Agency 25, Chapter 600, Section 20 (Virginia's Legislative Information System [VLIS], 2014a). The portions of the ACP within the Cities of Suffolk and Chesapeake and Southampton County occur within the Eastern Virginia Groundwater Management Area (VDEQ, 2014a). The other management area, the Eastern Shore Groundwater Management Area, is located in the Counties of Accomack and Northampton, over 25 miles to the northeast of the nearest ACP facility. There are two sole source aquifers in Pennsylvania, but both are located far from the nearest proposed SHP facilities. The Seven Valleys Aquifer and New Jersey Coastal Plain Aquifer are located approximately 140 miles southeast and 300 miles east of the nearest SHP facilities, respectively (EPA, 2008). The Pennsylvania Department of Environmental Protection (PADEP) Bureau of Safe Drinking Water does not designate sole source aquifers on a Commonwealth level and defers to EPA - designated sole source aquifers in the region (Reisch, 2015). ME Resource Report 2 2.1.3 Water Supply Wells 2.1.3.1 Public Wells Water Use and Quality Atlantic consulted with the WVDHHR Source Water Assessment and Wellhead Protection Program, Virginia Department of Health — Office of Drinking Water (VDH -ODW), and NCDENR -DWR to obtain location data for public water supply wells within 150 feet of the proposed ACP facilities. DTI similarly consulted with the WVDHHR and PADEP Bureau of Safe Drinking Water to obtain location data for public water supply wells within 150 feet of the proposed workspace for the SHP facilities. The results of these consultations are described below and summarized in Table 2.1.3 -1. TABLE 2.1.3 -1 Public Water Supply Wells Within 150 Feet of the Atlantic Coast Pipeline and Supply Header Project Facility /County or City /State or Distance and Direction Commonwealth Milepost(s) Public Water Well Name from Workspace (feet) ATLANTIC COAST PI PELI NE AP -1 None Identified AP -2 Wilson County, NC Cumberland County, NC AP -3 None Identified AP -4 None identified AP -5 None identified Aboveground Facilities None identified SUPPLY HEADER PROJECT TL -635 None identified TL -636 None identified Aboveground Facilities None identified 359.5 Town of Sims 18, W 433.2 United Church of Christ Shiloh 131. NW Location data for water supply wells is not publicly available in West Virginia. However, the WVDHHR reviewed maps of the proposed ACP and SHP facilities to identify public water supply wells located along or near the proposed facilities in West Virginia. The WVDHHR (2015) did not identify any public water wells within 150 feet of the proposed workspace for the ACP and SHP facilities in West Virginia. The VDH -ODW provided Atlantic with digital location data for public water supply wells in Virginia (Soto, 2015). No public water supply wells were identified within 150 feet of the proposed workspace for the ACP facilities in Virginia. The NCDENR -DWR (2014) provided Atlantic with digital location data for public water supply wells in North Carolina. Review of these data identified two public wells within 150 feet of the proposed workspace for the AP -2 mainline in North Carolina. 2 -9 Resource Report 2 Water Use and Quality The PADEP Bureau of Safe Drinking Water identified the eMapPA application as the best source of information on public water supply wells in the Commonwealth (McCaffrey, 2015). No public wells were identified within 150 feet of the TL- 636 loop and other SHP facilities in Pennsylvania through review of this application (PADEP, 2015a). 2.1.3.2 Private Wells Location data for private wells are not readily available from the PADEP, WVDHHR, VDEQ, VDH -ODW, and NCDENR -DWR. Atlantic and DTI, respectively, are documenting locations of private wells within 150 feet of the proposed ACP and SHP facilities through discussions with landowners and field (civil) surveys. Private water supply wells identified to date within 150 feet of the proposed workspace for the ACP and SHP facilities are identified in Table 2.1.3 -2. TABLE 2.1.3 -2 Private Water Wells Within 150 Feet of the Atlantic Coast Pipeline and Supply Header Project Distance (feet) and Direction Facility /County or City /State or Commonwealth Milepost From Workspace ATLANTIC COAST PI PELI NE AP -1 Lewis County, WV 2.2 Within Workspace Lewis County, WV 9.4 3, E Upshur County, WV 39.5 31, NE Augusta County, VA 120.9 39, SW Nottoway County, VA 229.9 24, NE Nottoway County, VA 240.8 4,S AP -2 Halifax County, NC 319.9 54, SE Nash County, NC 332.2 17, W Nash County, NC 338.1 18, SE Nash County, NC 347.3 90, NW Nash County, NC 347.5 65, NW Nash County, NC 347.5 Within Workspace Nash County, NC 347.6 Within Workspace Nash County, NC 353.3 Within Workspace Johnston County, NC 379.2 70, W Johnston County, NC 385.1 Within Workspace Johnston County, NC 401.2 Within Workspace Cumberland County, NC 433.5 Within Workspace Cumberland County, NC 433.6 Within Workspace Cumberland County, NC 450.6 86, NW Robeson County, NC 466.1 119's Robeson County, NC 474.1 77,S AP -3 Southampton County, VA 24.0 146, NW City of Suffolk, VA 58.2 5,S AP -4 None identified to date AP -5 None identified to date Aboveground Facilities None identified to date SUPPLY HEADER PROJECT TL -635 Doddridge County, WV 15.2 117, E TL -636 Westmoreland County, PA 1.2 70,S 2 -10 Resource Report 2 2.1.3.3 Wellhead Protection Areas Water Use and Quality Amendments to the Safe Drinking Water Act in 1986 established requirements for States to implement wellhead protection programs designed to protect underground sources of drinking water. A wellhead protection area (WPA) is an area (radius) around a public water supply well that has been delineated to regulate and protect the water supply drawn by the well. The size of the radius is based on an evaluation of geology and hydraulics or is mandated based on the type of public water supply well. Shallow wells, which are susceptible to impacts on near surface groundwater, generally have larger surface protection areas than deeper wells. Atlantic and DTI, respectively, are consulting with the State /Commonwealth agencies responsible for overseeing wellhead protection programs to identify WPAs proximate to the proposed ACP and SHP facilities (i.e., the WVDHHR, VDEQ, NCDENR -DWR, and PADEP). Crossings of WPAs identified by these agencies along the proposed facilities are identified in Table 2.1.3 -3. TABLE 2.1.3 -3 Wellhead Protection Areas Crossed by the Atlantic Coast Pipeline and Supply Header Project Facility /County or City /State or Commonwealth Milepost(s) Wellhead Protection Area Crossing Length (feet) ATLANTIC COAST PIPELINE AP -1 Lyndhurst/Augusta 145.5 —147.0 Lyndhurst Well 1.5 miles AP -2 None identified AP -3 None identified AP -4 None identified AP -5 None identified Aboveground Facilities TBD TBD TBD TBD SUPPLY HEADER PROJECT TL -635 None identified TL -636 TBD TBD TBD TBD Aboveground Facilities TBD TBD TBD TBD In West Virginia, the Source Water Assessment and Wellhead Protection Program is administered by the WVDHHR. While locations of WPAs data are not publically available, the WVDHHR (2015) reviewed the proposed facilities and did not identify WPA crossings along the pipeline routes or within aboveground facility sites. The Commonwealth of Virginia, under the oversight of VDEQ, has a Wellhead Protection Plan that was adopted in April 2005 (VDEQ, 2005). The plan provides a framework for establishing wellhead protection areas and a process for local agencies and various government units to apply for funding to implement wellhead protection plans for public water 2 -11 Resource Report 2 Water Use and Quality supplies. Atlantic consulted with the VDH -ODW to identify public water wells that may have associated wellhead protection areas. Atlantic identified one wellhead protection area crossed between MP 145.5 and 147.0 for the Lyndhurst Well in Augusta County. Atlantic will continue consulting with local water providers to determine if other wellhead protection areas administered at a local level are crossed. The NCDENR -DWR (2015) provided Atlantic with statewide digital data for WPAs in North Carolina. Based on review of this data, no WPAs are crossed by the proposed ACP facilities in North Carolina. The nearest WPA is located approximately 0.8 mile from MP 382.0 of the AP -2 mainline. The PADEP promotes the establishment and delineation of WPAs to protect public water supplies from contamination. DTI is consulting with the PADEP to identify WPA crossings along the proposed TL -636 pipeline in Pennsylvania ( PADEP, 2015a). 2.1.4 Springs Based on a review of USGS 7.5- minute series topographic maps and the results of discussions with landowners, civil field surveys, and biological field surveys conducted to date, four springs are located within 150 feet of the proposed workspace for the ACP AP -1 mainline (see Table 2.1.4 -1). No documented springs are located within 150 feet of the workspace for the remaining ACP or SHP facilities. TABLE 2.1.4 -1 Springs Located within 150 Feet of the Atlantic Coast Pipeline and Supply Header Project a,n Pipeline Segment/County or City/ State or Commonwealth Approximate Milepost Distance and Direction from Workspace (feet) ATLANTIC COAST PI PELI NE AP -1 Highland County, VA 82.2 70, SW Augusta County, VA 110.8 30, N Buckingham County, VA 204.0 Within Workspace Buckingham County, VA 204.0 10, N No springs are located within 150 feet of the Atlantic Coast Pipeline in West Virginia or North Carolina, or within 150 feet of the Supply Header Project. Spring information is based on USGS 7.5- minute series topographic maps, discussions with landowners, civil field surveys, and biological field surveys. 2.1.5 Contaminated Groundwater Atlantic and DTI, respectively, searched Federal and State /Commonwealth databases to identify contaminated sites, including sites which could contain contaminated groundwater, in the vicinity of the proposed ACP and SHP facilities. The EPA's Facility Registry System map service was used to locate sites within 1.0 mile of the Projects that are listed on the Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) and the Assessment, Cleanup and Redevelopment Exchange System (ACRES) (EPA, 2014). In addition, various other map services and databases were reviewed for each State /Commonwealth as described below. Contaminated soil and /or groundwater could potentially be encountered at or near the sites listed in Table 2.1.5 -1 and discussed below. 2 -12 Resource Report 2 Water Use and Quality 2 -13 TABLE 2.1.5 -1 Contaminated Sites, Landfills, and Leaking Underground Storage Tanks Near the Atlantic Coast Pipeline and Supply Header Project' Distance and Drainage County /City and Pipeline Nearest Direction from Direction from State /Commonwealth Segment Milepost Site Name Centerline Facility Type Project' ATLANTIC COAST PIPELINE CERLIS, ACRES Sites Identified within 1 mile of the Centerline and Aboveground Facilities Northampton, NC AP -2 300 Garysburg Community Center 5,015ft W Brownfield Up Gradient Halifax, NC AP -2 304.3 Weldon Refuse Disposal 7,476ft W Brownfield Up Gradient Johnston, NC AP -2 383.2 Hot -Z Selma Spill 3,718ft W Superfund Site Up Gradient Cumberland, NC AP -2 437.4 Woody's Salvage Yard 867ft SE Superfund Site Up Gradient Chesapeake, VA AP -3 77.3 Eppinger & Russel Co Inc. 4,119ft N Superfund Site Up Gradient Chesapeake, VA AP -3 77.3 Money Point Creosite Site 4,119ft N Superfund Site Up Gradient Chesapeake, VA AP -3 76.1 Norfolk Intercoastal Steel 590ft SE Superfund Site Side Gradient Chesapeake, VA AP -3 77.8 Borden Smith Douglass 1,265ft E Superfund Site Side Gradient Landfill and Solid Waste Sites Identified within 0.5 mile of the Centerline and Aboveground Facilities Augusta, VA AP -1 136.0 Jolivue LandfilFAugusta 371ft NE Closed Landfill and Up Gradient Regional Landfill Active Landfill Complex Halifax, NC AP -2 304 Roanoke Valley LCID Landfill 2,589ft W Active Landfill Up Gradient Suffolk, VA AP -3 64 SPSA Regional Landfill 3,109ft NW Active Landfill Up Gradient Chesapeake, VA AP -3 76.4 Dominion Chesapeake Energy 305ft E Closed Industrial Side Gradient Center Landfill and Active Industrial Landfill Chesapeake, VA AP -3 77.5 Atlantic Aggregate Recyclers 697ft N Inert Landfill Up Gradient Leaking Underground Petroleum Storage Tank (LUST) Sites within 1000 feet of the Centerline and Aboveground Facilities Augusta, VA AP -1 139.0 Starkey Residence 486ft SW LUST Side Gradient Nelson, VA AP -1 177.8 Woodson's Grocery d 800ft E LUST Side Gradient Buckingham, VA AP -1 206.6 Betty Brown Property 976ft NE LUST Up Gradient Nash, NC AP -2 341.6 NCCU -Turner Law School 838ft SE LUST Side Gradient Nash, NC AP -2 341.6 NCCU- Eagleson Hall 272ft NW LUST Down Gradient Johnston, NC AP -2 383.3 Days Inn Motel 28ft SE LUST Side Gradient Johnston, NC AP -2 400.7 Tippet Residential 614ft SE LUST Down Gradient Sampson, NC AP -2 410.5 Plain View Grocery 966ft E LUST Up Gradient Southampton, VA AP -3 24.1 Cooke Residence 882ft NW LUST Up Gradient Suffolk, VA AP -3 56.7 Wilkins Percy Property 1,008ft NE LUST Side Gradient Suffolk, VA AP -3 60.9 City of Suffolk Pump Station 11 803ft NW LUST Side Gradient Chesapeake, VA AP -3 74.1 Deep Creek Pharmacy 244ft N LUST Down Gradient Chesapeake, VA AP -3 74.2 BOX USA Group, Ina d 930ft N LUST Up Gradient Chesapeake, VA AP -3 74.2 Watkins Motor Lines, Inc. 361ft S LUST Down Gradient Chesapeake, VA AP -3 74.3 Mid Atlantic Repair, Ina 533ft S LUST Down Gradient Chesapeake, VA AP -3 75.5 Deep Creek Pumping Station 772ft N LUST Up or Side Gradient Chesapeake, VA AP -3 76.5 IMTT- Chesapeake Terminal 623ft NW LUST Up or Side Gradient Chesapeake, VA AP -3 76.5 Chesapeake Energy Center 905ft SE LUST Up or Side Gradient Chesapeake, VA AP -3 77.0 Chesapeake Energy Center 700ft S LUST Up or Side Gradient 2 -13 Resource Report 2 Water Use and Quality TABLE 2.1.5 -1 (cont'd) Contaminated Sites, Landfills, and Leaking Underground Storage Tanks Near the Atlantic Coast Pipeline and Supply Header Project a a No contaminated sites, landfills, or LUST sites were found within the search distances identified above for SHP. b USGS topographic maps were reviewed to evaluate sites topographic disposition of each site in relation to the Projects. Determining the nature and extent of contamination for each LUST site requires additional research a Site listed as "suspected" leak on VADEQ database, confirmation of leak requires additional research In addition to the EPA databases, review of the WVDEP's web -based list of municipal solid waste landfills and online database of leaking underground storage tanks (LUST) found no contaminated sites within 1.0 mile of the proposed ACP and SHP facilities in West Virginia (WVDEP, 2014b; WVDEP, 2014c; WVDEP, 2013). The VDEQ Virginia Environmental geographic information system (GIS) system was used to obtain spatial databases of LUSTS and other solid or hazardous waste sites in Virginia (VDEQ, 2014b). Review of these sources in addition to the EPA databases identified 28 contaminated sites in the vicinity of the proposed ACP facilities, including four Superfund sites. The majority of the sites are located along the eastern extent of the proposed AP -3 lateral, where it crosses industrialized areas within the City of Chesapeake. The NCDENR North Carolina OneMap Geospatial Portal was used to obtain spatial databases of LUSTs, landfills, and other solid or hazardous waste sites in North Carolina (NCDENR, 2014a; NCDENR, 2014b, NCDENR, 2014c). Review of these sources and the EPA databases identified eight sites in the vicinity of the proposed ACP facilities in North Carolina, two of which are Superfund sites and two of which are Brownfield sites. One LUST occurs very near (within 28 feet) of the proposed AP -2 centerline and may potentially be crossed. Atlantic and DTI are investigating options for avoiding this site. The PADEP's web -based list of Municipal Waste Landfills & Resource Recovery Facilities and an online database for Bureau of Environmental Cleanup and Brownfields Regulated Storage Tank Cleanup Incidents was reviewed to identify contaminated sites in Pennsylvania (PADEP, 2014). No contaminated sites were identified in the vicinity of the proposed SHP facilities in Pennsylvania in these or the EPA sources. 2 -14 Distance and Drainage County /City and Pipeline Nearest Direction from Direction from State /Commonwealth Segment Milepost Site Name Centerline Facility Type Project b Chesapeake, VA AP -3 77.0 Chesapeake Energy Center 725ff S LUST Up or Side Gradient Chesapeake, VA AP -3 77.0 Chesapeake Energy Center 750ff S LUST Up or Side Gradient Chesapeake, VA AP -3 77.1 Chesapeake Energy Center 700ff S LUST Up or Side Gradient Chesapeake, VA AP -3 77.1 Chesapeake Energy Center 850ff S LUST Up or Side Gradient Chesapeake, VA AP -3 77.5 Former Smith Douglas Plant 435ff S LUST Up or Side Gradient Chesapeake, VA AP -3 77.5 OneSteel Recycling, Inc. 896ff N LUST Up or Side Gradient Robeson, NC AP -2 477.2 Rudy's Restaurant 763ft SW LUST Up Gradient a No contaminated sites, landfills, or LUST sites were found within the search distances identified above for SHP. b USGS topographic maps were reviewed to evaluate sites topographic disposition of each site in relation to the Projects. Determining the nature and extent of contamination for each LUST site requires additional research a Site listed as "suspected" leak on VADEQ database, confirmation of leak requires additional research In addition to the EPA databases, review of the WVDEP's web -based list of municipal solid waste landfills and online database of leaking underground storage tanks (LUST) found no contaminated sites within 1.0 mile of the proposed ACP and SHP facilities in West Virginia (WVDEP, 2014b; WVDEP, 2014c; WVDEP, 2013). The VDEQ Virginia Environmental geographic information system (GIS) system was used to obtain spatial databases of LUSTS and other solid or hazardous waste sites in Virginia (VDEQ, 2014b). Review of these sources in addition to the EPA databases identified 28 contaminated sites in the vicinity of the proposed ACP facilities, including four Superfund sites. The majority of the sites are located along the eastern extent of the proposed AP -3 lateral, where it crosses industrialized areas within the City of Chesapeake. The NCDENR North Carolina OneMap Geospatial Portal was used to obtain spatial databases of LUSTs, landfills, and other solid or hazardous waste sites in North Carolina (NCDENR, 2014a; NCDENR, 2014b, NCDENR, 2014c). Review of these sources and the EPA databases identified eight sites in the vicinity of the proposed ACP facilities in North Carolina, two of which are Superfund sites and two of which are Brownfield sites. One LUST occurs very near (within 28 feet) of the proposed AP -2 centerline and may potentially be crossed. Atlantic and DTI are investigating options for avoiding this site. The PADEP's web -based list of Municipal Waste Landfills & Resource Recovery Facilities and an online database for Bureau of Environmental Cleanup and Brownfields Regulated Storage Tank Cleanup Incidents was reviewed to identify contaminated sites in Pennsylvania (PADEP, 2014). No contaminated sites were identified in the vicinity of the proposed SHP facilities in Pennsylvania in these or the EPA sources. 2 -14 Resource Report 2 Water Use and Quality 2.1.6 Groundwater Construction Related Impacts and Mitigation Standard procedures for construction of the pipeline and aboveground facilities could potentially affect groundwater in several ways. Clearing, grading, trenching, and soil stockpiling activities could temporarily alter overland flow and groundwater recharge or could result in minor fluctuations in groundwater levels and /or increased turbidity. Near - surface soil compaction caused by the operation of heavy construction equipment could reduce the ability of soil to absorb water, which could increase surface runoff and the potential for ponding. These impacts will be minimized or avoided through implementation of the construction practices outlined in the 2013 versions of the FERC's Upland Erosion Control, Revegetation, and Maintenance Plan (Plan) and Wetland and Waterbody Construction and Mitigation Procedures (Procedures). Ground disturbance associated with construction of pipelines and aboveground facilities is generally within the upper 10 feet or less of the existing ground surface, which is above the typical minimum depth of the bedrock aquifers in the areas crossed by the Projects. A depth of 10 feet is also above most near - surface aquifers and most wells that might be completed in a localized shallow aquifer. Where near - surface aquifers are present or localized alluvial aquifers occur, they typically consist of unconsolidated alluvial sand and gravel exhibiting rapid recharge and groundwater movement. If disturbed, these aquifers quickly re- establish equilibrium and turbidity levels rapidly subside, such that impacts are localized and temporary. Upon completion of construction, Atlantic and DTI will restore the ground surface as closely as practicable to original contours and reestablish vegetation on the right -of -way to facilitate restoration of preconstruction overland flow and recharge patterns. Karst features that have an opening into the subsurface bedrock have the potential to provide a conduit for soil, stormwater, or contaminants into groundwater.3 Atlantic and DTI conducted a detailed desktop assessment and field survey along those portions of the Projects considered prone to the development of karst to identify sinkholes and other karst features. As warranted, Atlantic and DTI will make minor route adjustments to avoid areas containing dense concentrations of features, such as sinkholes, which are indicative of karst development. During construction, erosion and sediment controls will be installed along the edge of the construction right -of -way and in other work areas upslope of known sinkholes or other karst features with a direct connection to the phreatic zone of the karst (i.e., groundwater). In addition, refueling, hazardous materials storage, and overnight equipment parking within 100 feet of karst features with direct connection to the phreatic zone will be prohibited. Results of the desktop assessment and field surveys as well as proposed construction and mitigation measures for karst areas are discussed in more detail in Resource Report 6. Potential project - related groundwater contamination sources may also include accidental spills and leaks of hazardous materials associated with construction; refueling or maintenance of vehicles; and storage of fuel, oil, and other fluids. Spills or leaks from equipment used during construction pose the greatest risk to groundwater resources. If not cleaned up, soils contaminated by spilled materials could leach and add pollutants to groundwater. 3 During the ACP and SHP Open Houses, and in comments filed with the EERC, several individuals commented about karst features and the potential to impact groundwater resources. 2 -15 Resource Report 2 Water Use and Quality To avoid or minimize the potential impact of hazardous material spills during construction and operation of the ACP and SHP, Atlantic and DTI will prepare and implement a Spill Prevention, Control, and Countermeasures Plan (SPCC Plan) (to be provided in Appendix IF of the final Resource Report 1). The SPCC Plan will specify preventive measures such as regular inspection of storage areas for leaks, replacement of deteriorating containers, and construction of containment systems around hazardous liquids storage facilities. The SPCC Plan will restrict refueling or other liquid transfer areas within 100 feet of wetlands, waterbodies, springs, and karst features with a direct connection to the phreatic zone; prohibit refueling within 200 feet of private water supply wells and within 400 feet of municipal water supply wells; and require additional precautions (e.g., secondary containment) when specified setbacks cannot be maintained. The SPCC Plan also will identify emergency response procedures, equipment, and cleanup measures to be implemented in the event of a spill, and require the construction contractor to complete an inventory of all construction fuels, lubricants, and other hazardous materials that may be used or stored in designated areas, as well as the amount and type of containers that will be used to store these materials. It is possible that previously undocumented sites with contaminated soils or groundwater could be discovered during construction of the Projects. Atlantic and DTI will prepare and implement a Contaminated Media Plan to address these circumstances (to be provided in Appendix IF of the final Resource Report 1). The Contaminated Media Plan will describe measures to be implemented in the event that signs of contaminated soil and /or groundwater are encountered during construction. Signs of potential contamination could include discoloration of soil, chemical -like odors, or sheens on soils or water. Containment measures will be implemented to isolate and contain the suspected soil or groundwater contamination and collect and test samples of the soil or groundwater to identify the contaminants. Once the contaminants are identified, a response plan will be developed for crossing or avoiding the site. Blasting may be necessary along portions of the proposed ACP and SHP facilities where bedrock is located at or near the ground surface (see Section 6.2 of Resource Report 6). Atlantic and DTI will prepare and implement a Blasting Plan which identifies procedures for the use, storage, and transportation of explosives consistent with safety requirements as defined by Federal, State /Commonwealth, and local agency regulations. The Blasting Plan will be provided in Appendix IF of the final Resource Report 1. Where blasting is necessary, it will be conducted in a manner to minimize possible impacts on nearby public and private water supply wells, springs, or karst features with a direct connection to the phreatic zone. As a result of blasting, temporary changes in water level and turbidity could affect groundwater quality and bedrock -based water well systems located in close proximity to the construction right -of -way. 4 The use of controlled blasting techniques, where small, localized detonations are utilized, will avoid or minimize the impacts of blasting and limit rock fracture to the immediate vicinity of these activities. As noted in Sections 2.1.3.2 and 2.1.4, Atlantic and DTI will contact landowners to determine the location of private water wells and private water supply springs within 150 feet of approved construction workspaces. Atlantic and DTI will, with 4 In comments filed with the EERC, several individuals commented about blasting during construction and potential impacts on water sources and water quality. 2 -16 Resource Report 2 Water Use and Quality landowner permission, conduct preconstruction and post - construction well testing, and perform necessary repair or restoration to maintain well productivity and water quality, for wells located within 150 feet of the construction area. Atlantic and DTI are evaluating the need to use groundwater for the aboveground facilities. Groundwater may be used for hydrostatic testing of facility piping, dust control, operation and maintenance activities, and domestic uses. 2.1.7 Facility Operations The new pipelines and aboveground facilities are not expected to result in any impacts on groundwater use or quality under typical operating conditions. Impacts could occur if maintenance activities require excavation or repair in proximity to water supply wells or springs. In such a case, the impacts and mitigation would be similar to those described above for construction activities. 2.2 SURFACE WATER RESOURCES 2.2.1 Existing Watersheds The USGS has organized watersheds of the United States into seven successively smaller levels of subdivisions using hydrologic unit codes (HUC). Regions (level one) are the largest watersheds (two -digit HUCs), followed by sub - regions (four -digit HUCs), basins (six -digit HUCs), and sub - basins (eight -digit HUCs), which are further divided into smaller watersheds. Information on the basins and watersheds crossed by the proposed ACP and SHP facilities is described below and summarized in Table 2.2.1 -1. The proposed ACP facilities will cross three regional watersheds (the Ohio, Mid - Atlantic, and South Atlantic -Gulf) and eight sub - regions (Monongahela, Kanawha, Lower Chesapeake, Potomac, Chowan- Roanoke, Neuse - Pamlico, Cape Fear, and Pee Dee). The sub - regions are further broken into 10 basins and 26 sub - basins. The Ohio Regional Watershed covers approximately 161,250 square miles encompassing portions of nine States, including Illinois, Indiana, Kentucky, Maryland, New York, North Carolina, Ohio, Tennessee, West Virginia and the Commonwealths of Pennsylvania and Virginia (USGS, 1994). Major rivers within this regional watershed include the Ohio, Wabash, Allegheny, Monongahela, Kanawha, and New Rivers. The Mid - Atlantic Regional Watershed covers approximately 95,360 square miles encompassing all or portions of eight States, including Connecticut, Delaware, Maryland, Massachusetts, New Jersey, New York, Vermont, West Virginia, and the Commonwealths of Pennsylvania and Virginia (USGS, 1994). Major rivers in the southern portion of this regional watershed include the Potomac, James, and Shenandoah Rivers, as well as the beginning of the Ohio River at the confluence of the Allegheny and Monongahela Rivers. The Mid - Atlantic Regional Watershed also contains the nation's largest estuary, Chesapeake Bay. 2 -17 Resource Report 2 Water Use and Quality TABLE 2.2.1 -1 Watersheds Crossed by the Atlantic Coast Pipeline and Supply Header Project Pipeline Segment/Regional Watershed/ Sub - Region Approximate Mileposts b County /City and State /Commonwealth ATLANTIC COAST PI PELI NE AP -1 Ohio Regional Watershed Monongahela 0.0-67.4 Harrison, Lewis, Upshur, Randolph, and Pocahontas Kanawha Mid - Atlantic Regional Watershed Lower Chesapeake Potomac Atlantic -Gulf Regional Watershed Chowan - Roanoke AP -2 Atlantic -Gulf Regional Watershed Chowan - Roanoke Neuse- Pamlico Cape Fear Pee Dee AP -3 Atlantic -Gulf Regional Watershed Chowan - Roanoke Mid - Atlantic Regional Watershed Lower Chesapeake AP -4 Atlantic -Gulf Regional Watershed Chowan - Roanoke AP -5 Atlantic -Gulf Regional Watershed Chowan - Roanoke SUPPLY HEADER PROJECT TL -635 Ohio Regional Watershed Monongahela Upper Ohio TL -636 Ohio Regional Watershed Monongahela Source: USGS, 1994 Counties, WV 67.4-80.2 Pocahontas County, WV 82.8 - 85.2; 85.4 - 113.5; and Highland, Augusta, Nelson, Buckingham, Cumberland, 153.8 - 241.6 Prince Edward and Nottoway Counties, VA 80.2 - 82.8; 85.2 - 85.4; and Highland and Augusta Counties, VA 113.5 - 153.8 241.6 - 292.7 Nottoway, Dinwiddie, Brunswick, and Greensville Counties, VA, and Northampton County, NC 292.7 - 310.0 Northampton and Halifax Counties, NC 310.0- 406.9 Halifax, Nash, Wilson, Johnston, and Sampson Counties, NC 406.9 - 450.8 Sampson and Cumberland Counties, NC 450.8 - 474.7 Cumberland and Robeson Counties, NC 0.0 - 51.8; and 66.9 - 67.3 Northampton County, NC, Southampton County, VA and City of Suffolk and City of Chesapeake, VA 51.8 - 65.8; and 67.3 - 77.6 City of Suffolk and City of Chesapeake, VA 0.0-3.1 Brunswick County, VA 0.0-1.2 Greensville County, VA 0.0 -0.7 Harrison County, WV 0.7-32.8 Wetzel, Tyler, and Doddridge Counties, WV 0.0-3.9 Westmoreland County, PA The South Atlantic -Gulf Regional Watershed covers approximately 278,680 square miles encompassing all or portions of eight States including Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, and the Commonwealth of Virginia (USGS, 1994). Major rivers in this regional watershed include the Roanoke, Cape Fear, Savannah, Ogeechee, and Chattahoochee Rivers. This South Atlantic -Gulf Regional Watershed also includes the Outer Banks of North Carolina and Florida Everglades. 2 -18 Resource Report 2 Water Use and Quality The proposed SHP facilities are located within the Ohio Regional Watershed and portions of two sub - regions, Upper Ohio and Monongahela. The sub - regions are further broken into two basins and three sub - basins. 2.2.2 Waterbodies Crossed Waterbodies are defined by the FERC as "any natural or artificial stream, river, or drainage with perceptible flow at the time of crossing, and other permanent waterbodies such as lakes and ponds." The flow regime for waterbodies may be characterized as perennial, intermittent, or ephemeral. Perennial waterbodies contain water for all or most of the year and have flow. Intermittent waterbodies flow seasonally or following rainfall events. Ephemeral waterbodies flow during or shortly after precipitation events or Spring snowmelt. As used in this Resource Report, the term "waterbodies" follows the FERC definition noted above. Through the Clean Water Act permitting process, Atlantic and DTI will determine with the U.S. Army Corps of Engineers (USAGE) whether given features are jurisdictional "waters of the U.S." The term "waterbodies," as used here, is best understood as those water features — excluding wetlands — that are potentially subject to USACE jurisdiction under the Clean Water Act. The FERC categorizes surface waters as major, intermediate, or minor waterbodies based on the width of the water's edge at the time of crossing. Major waterbodies are greater than 100 feet wide, intermediate waterbodies are between 10 feet and 100 feet wide, and minor waterbodies are 10 feet wide or less. Atlantic and DTI are completing waterbody surveys to document waterbody crossings along the proposed pipeline routes and in other work areas. Table 2A -1 and Table 2A -2 in Appendix 2A provide a list of the waterbodies crossed by the proposed ACP and SHP facilities, respectively. For each waterbody crossing, the tables include the field survey designation (Feature ID), waterbody name, approximate crossing width, flow regime (perennial, intermittent, ephemeral, or canal /ditch), proposed crossing method, and State /Commonwealth water classification, and indicates if there is a time of year restriction at the crossing. Waterbodies that were not surveyed in the field due to a lack of survey permission or recent changes to the proposed pipeline routes were identified based on the National Hydrography Dataset (NHD) (USGS, 2007) and /or recent aerial photography. These features are designated as "NHD" in the Feature ID column of each table. Table 2.2.2 -1 below provides a summary of the waterbodies crossed by the Projects. Waterbody and wetland delineation reports for the ACP and SHP will be filed in a supplemental filing or in Appendices 2D and 2E, respectively, of the final Resource Report 2. Information on the major waterbodies crossed by the Projects is provided in Table 2.2.2 -2. Site - specific drawings for each of the major waterbodies crossed will be provided in Appendix 1H of the final Resource Report 1. Information for intermediate and minor waterbody crossings is provided in Appendices 2A -1 and 2A -2. 2 -19 Resource Report 2 Water Use and Quality TABLE 2.2.2 -1 Waterbodies Affected by the Atlantic Coast Pipeline and Supply Header Project TABLE 2.2.2 -2 Major Waterbodies Crossed by the Atlantic Coast Pipeline and Supply Header Project' Pipeline Segment/County or Waterbody Type Approximate Crossing EERC Classification Waterbody Name Milepost Flow Type a Width (feet) Crossing Method AP -1 Open Open Nelson and Buckingham James River 180.4 Perennial CanaF Water Counties, VA Water Project/Facility Perennial Intermittent Ephemeral Ditch Ponds Major Intermediate Minor Ponds ATLANTIC COAST PI PELI NE Pump Dinwiddie and Brunswick Nottoway River 255.0 Perennial 100 Pipeline Facilities 379 410 123 61 25 14 97 862 25 Aboveground TBD TBD TBD TBD 0 0 TBD TBD 0 Facilities 302.0 Perennial 360 HDD Counties, NC Access Roads 33 49 4 2 4 1 12 75 4 Pipe Storage and TBD TBD TBD TBD 0 0 TBD TBD 0 Contractor Yards 390.1 Perennial 120 Dam and Pump Cumberland County, NC Cape Fear River 443.7 Perennial 290 Project Total 412 459 127 63 29 15 109 937 29 SUPPLY HEADER PROJECT 115 Cofferdam County, VA Pipeline Facilities 39 12 0 0 0 0 1 50 0 Aboveground TBD TBD TBD TBD 0 0 TBD TBD 0 Facilities Perennial 300 HDD a No major waterbodies are crossed by the Supply Header Project in Pennsylvania or West Virginia. Access Roads TBD TBD TBD TBD TBD TBD TBD TBD TBD Pipe Storage and TBD TBD TBD TBD 0 0 TBD TBD 0 Contractor Yards Project Total 39 12 0 0 0 0 1 50 0 TABLE 2.2.2 -2 Major Waterbodies Crossed by the Atlantic Coast Pipeline and Supply Header Project' Pipeline Segment/County or Approximate Crossing City /State or Commonwealth Waterbody Name Milepost Flow Type a Width (feet) Crossing Method AP -1 Nelson and Buckingham James River 180.4 Perennial 330 HDD Counties, VA Cumberland and Prince Edward Appomattox River 215.1 Perennial 100 Cofferdam/Dam and Counties, VA Pump Dinwiddie and Brunswick Nottoway River 255.0 Perennial 100 Cofferdam Counties, VA Crreensville County, VA Meherrin River 279.0 Perennial 115 Open Cut AP -2 Northampton and Halifax Roanoke River 302.0 Perennial 360 HDD Counties, NC Halifax and Nash Counties, NC Fishing Creek 325.9 Perennial 105 Dam and Pump /Flume Nash County, NC Swift Creek 332.6 Perennial 130 Dam and Pump /Flume Nash County, NC Tar River 351.4 Perennial 130 TBD Johnston County, NC Neuse River 390.1 Perennial 120 Dam and Pump Cumberland County, NC Cape Fear River 443.7 Perennial 290 HDD AP -3 Crreensville and Southampton Meherrin River 12.4 Perennial 115 Cofferdam County, VA Southampton, VA Nottoway River 33.2 Perennial 160 HDD Southampton County and City of Blackwater River 39.1 Perennial 185 HDD Suffolk, VA City of Chesapeake, VA South Elizabeth River 76.6 Perennial 300 HDD a No major waterbodies are crossed by the Supply Header Project in Pennsylvania or West Virginia. 2 -20 Resource Report 2 Federal Lands Water Use and Quality The ACP crosses four areas of federally managed land: the Monongahela National Forest; George Washington National Forest (which includes the Appalachian Trail); Blue Ridge Parkway; and Great Dismal Swamp National Wildlife Refuge. Additional information about these lands is provided in Section 8.7.1 of Resource Report 8. Table 2.2.2 -3 provides a summary of waterbodies crossed within each of these Federal land units. The SHP does not cross any Federal lands. TABLE 2.2.2 -3 Waterbodies Crossed by the Atlantic Coast Pipeline on Federal Lands Federal Land Federal Land Unit Crossed (miles) Monongahela National Forest 17.9 George Washington National Forest 11.8 Blue Ridge Parkway 0.1 Great Dismal Swamp National Wildlife Refuge 1.7 Waterbody Type CanaF Open Water Perennial Intermittent Ephemeral Ditch Ponds 13 0 0 0 0 6 7 0 0 0 0 0 0 1 0 0 5 2.2.3 Surface Water Standards and Classifications Each of the States /Commonwealths crossed by the proposed ACP and SHP facilities has developed its own regulatory system for evaluating, classifying, and monitoring the quality and uses of surface waters. Each system includes the assignment of "beneficial use designations" that describe the potential or realized capacity of a waterbody to provide defined ecological and human population benefits. A summary of the use designation system for each State /Commonwealth is provided below. The designations for the waterbodies crossed by the proposed ACP and SHP facilities, respectively, are listed in Tables 2A -1 and 2A -2 in Appendix 2A. 2.2.3.1 West Virginia Surface Water Classifications West Virginia Code of State Regulations (CSR) §47 -2 -4 (West Virginia Code of State Regulations [WVCSR], 2014) outlines an antidegradation policy that establishes three classes for all waters of the State. The classes are assigned to waters in an effort to maintain quality or existing uses (WVDEP, 2014a). The three tiers of protection are defined as follows (WVCSR, 2014): Tier 1 Protection: existing water uses and the level of water quality necessary to protect the existing uses shall be maintained and protected. Existing uses are those uses actually attained in a water on or after November 28, 1975, whether or not they are included as designated uses within the State code, water quality standards. Tier 2 Protection: existing high quality waters of the State must be maintained at their existing high quality. High quality waters are defined in the State code as those waters whose quality is equal or better than the minimum levels necessary to achieve the national water quality goal uses. 2 -21 Resource Report 2 Water Use and Quality Tier 3 Protection: outstanding national resource waters that have been placed on the highest tier of the State classification to provide greater protection. These include waters that are in federally designated Wilderness Areas and waters with naturally reproducing trout in State parks, national parks, and national forests. West Virginia CSR §47 -2 -6 further outlines general Water Use Categories and Water Quality Standards for waters of the State. Under the CSR, all waters of the State are designated for Propagation and Maintenance of Fish and Other Aquatic Life (Category B) and Water Contact Recreation (Category C) unless otherwise designated. Other use designations assigned under the CSR include: Public Water (Category A), Warm Water Fishery (Category B1), Trout Waters (Category 132), Wetlands (Category 134), Water Contact Recreation (Category C), Agricultural and Wildlife Uses (Category D), Irrigation (Category D1), Livestock (Category D2), Wildlife (Category D3), Water Supply Industrial, Water Transport, Cooling and Power (Category E), Water Transport (Category E1), Cooling Water (Category E2), Power Production (Category E3), and Industrial (Category E4) (West Virginia CSR, 2014). The proposed ACP facilities will cross five Tier 3 streams in West Virginia (Unnamed Tributary to West Fork Greenbrier River, MP 68.1; West Fork Greenbrier River, MP 68.9; Mountain Lick Creek, MP 69.6; John's Run, MP 72.1; and Little River, MP 76.3). The SHP will not cross Tier 3 streams in West Virginia. According to WVDEP staff Tier 1 and Tier 2 streams are determined on a case by case basis during permitting and determinations may vary based on the water quality parameters (Peterson, 2015). For example, a stream could be designated as a Tier 1 for one parameter and a Tier 2 for a different parameter. Therefore, streams are not able to be categorized as Tier 1 or Tier 2 at this time. 2.2.3.2 Virginia Surface Water Classifications Title 9 of VAC Agency 25, Chapter 260, Section 30 (9VAC25- 260 -30) outlines an antidegradation policy that establishes three classes for all waters of the Commonwealth of Virginia (VLIS, 2014b). The three classes are defined as follows: Tier 1: waters where existing water quality and uses need to be maintained. Tier 2: waters that are exceeding water quality standards. Tier 3: exceptional waters where no new discharges of pollution are allowed; these waters are required to be listed in the VAC. The proposed ACP facilities do not cross Tier 3 streams in Virginia (see Appendix 2A). According to VDEQ staff, Tier 1 and Tier 2 streams are determined on a case by case basis during permitting (Barron, 2015). Therefore, streams are not able to be categorized as Tier 1 or Tier 2 at this time. Under 9VAC25- 260 -10, all Commonwealth of Virginia waters, including wetlands, are designated for recreational uses; propagation and growth of a balanced, indigenous population of aquatic life; wildlife; and the production of edible and marketable natural resources. Subcategories have been established for the propagation and growth of a balanced indigenous population of aquatic life in Chesapeake Bay and its tidal tributaries. Other subcategories have not been defined in the VAC (VLIS, 2014c). 2 -22 Resource Report 2 Water Use and Quality 2.2.3.3 North Carolina Surface Water Classifications Title 15A of North Carolina Administrative Code (NCAC), Chapter 2, Subchapter 02B outlines State surface water and wetland standards (15A NCAC 0213.0101). Within this subchapter, classifications for surface waters are defined as follows: • Class C: freshwater protected for secondary recreation, fishing, and aquatic life; this category includes all freshwater in the State to protect these uses. • Class B: freshwater protected for primary recreation, including swimming and all Class C uses. • Classes WS -I, WS -II, WS -III, WS -N, and WS -V: waters that are protected as water supplies within watersheds of increasing development, ranging from natural, undeveloped, and upstream watersheds to moderate or highly developed watersheds. • Class WL: waters that meet the definition of wetlands, except coastal wetlands. • Classes SC, SB, SA, and SWL: waters including various categories of tidal salt - waters. In addition to these classifications, the NCAC defines a number of supplemental classes for State waters. These include designations for Trout Waters (Tr), Swamp Waters (Sw), Nutrient Sensitive Waters (NSW), Outstanding Resource Waters (ORW), High Quality Waters (HQW), Future Water Supply, and Unique Wetland. The NCAC (15A NCAC 0213.0201 Anti degradation) under subsection 213, Rule .0201, establishes an antidegradation policy for North Carolina. This policy requires the establishment of classes protecting existing uses of State waters. It additionally states that projects affecting waters shall not be permitted unless existing uses can be protected (NCAC, 1996). In North Carolina all surface waters are assigned a minimum Class C designation. In addition, the proposed ACP pipeline facilities will cross three Class WS -III, 16 Class WS -N, one Class WS -V, 28 Class Sw, and 41 Class NSW waterbodies (see Appendix 2A). 2.2.3.4 Pennsylvania Surface Water Classifications Provisions of water quality standards in Pennsylvania are provided under Title 25, Subpart C, Article II, Chapter 93 of the Pennsylvania Code (Pennsylvania Code, 1971). The general provisions for protected water uses in Chapter 93.3 identifies several categories of water uses to be protected, including cold water fisheries (CWF), warm water fisheries (WWF), migratory fishes, trout stocking, potable water supply (PWS), industrial water supply (IWS), livestock water supply (LWS), wildlife water supply (AWS), irrigation (IRS), boating (B), fishing (F), water contact sport (WC), esthetics (E), high quality waters (HQ), exceptional value waters (EV), and navigation. Pennsylvania Code chapter 93.4 outlines uses for waters of the Commonwealth. Under this chapter, the following uses apply to all surface waters unless otherwise specified in law or regulation: WWF, PWS, IWS, LWS, AWS, IRS, B, F, WC, and E. These uses must be protected 2 -23 Resource Report 2 Water Use and Quality in accordance with Chapter 96 of the Pennsylvania Code with regard to water quality standards and any other applicable Commonwealth or Federal laws and regulations. Pennsylvania Code Chapter 93.4a outlines an antidegradation policy for surface waters of the Commonwealth. The policy states that existing in- stream water uses and the level of water quality necessary to protect existing uses shall be maintained and protected. The policy additionally states that the water quality of HQ and EV streams and lakes shall be maintained and protected, except as provided in § 93.4c(b)(1)(iii). HQ waters are defined as surface waters that have long -term water quality to support the propagation of fish, shellfish, and wildlife as well as recreation; that support high quality aquatic communities; and /or that meet Class A wild trout stream qualifications. Surface waters that qualify as EV must meet the requirements of HQ surface waters as well as one or more of the following: • the water is located within a national wildlife refuge, national natural landmark, Federal wild river, Federal wilderness area, national recreation area, or areas designated by the Commonwealth as game propagation and protection areas, park natural areas, forest natural areas, or wild rivers; • the water is an outstanding national, Commonwealth, regional or local resource water; • the water is a surface water of exceptional recreational significance; • the water achieves a score of at least 92 percent using the methods and procedures described in subsection (a)(2)(i)(A) or (B); or • the water is designated as a `wilderness trout stream' by the Pennsylvania Fish and Boat Commission. In Pennsylvania, the SHP facilities will cross 9 streams with CWF and HQ designations, and two streams with trout stocking designations (see Appendix 2A; PADEP, 2013). None of the waterbodies within the SHP Project area are classified as EV. 2.2.4 Contaminated Waters or Sediments The EPA's List of Sediment Sites with Substantial Contamination identifies Superfund sites where remediation includes the dredging or excavation of more than 10,000 cubic yards of contaminated sediment. According to the EPA, these sites contain sediments associated with waterbodies that present an unacceptable risk to human health and /or the environment (EPA, 2013b). Based on a review of the EPA list, no such sites are located in Pennsylvania, West Virginia, or North Carolina (EPA, 2012a). One such site is listed in the City of Roanoke, Virginia, but it is located greater the 50 miles from the proposed ACP facilities. Atlantic and DTI reviewed the list of 303(4) Impaired Waters for each State /Commonwealth to identify crossings of waterbodies that may contain contaminated sediments (WVDEP, 2012a; WVDEP, 2012b; VDEQ, 2015; NC OneMap, 2015; PADEP, 2015c). Waterbodies crossed by the proposed ACP or SHP facilities that are included on the EPA 303(4) impaired waters list are identified in Table 2B in Appendix 2B. There are 17 303(4) impaired streams crossed by the ACP in West Virginia, 22 in Virginia, and one in North Carolina. There are nine 303(4) impaired streams crossed by the SHP in West Virginia 2 -24 Resource Report 2 Water Use and Quality and five in Pennsylvania. Atlantic and DTI are evaluating the contaminants listed within these waterbodies for the probability to encounter contaminated sediments during construction. 2.2.5 Public Surface Water Intakes and Surface Water Protection Areas Atlantic and DTI are consulting with the WVDHHR, VDH -ODW, NCDENR -DWR, and PADEP in an effort to identify public surface water intakes within 3.0 miles and surface water protection areas within 250 feet of the proposed ACP and SHP facilities. Similar to the public supply wells discussed in Section 2.1.3 above, surface water intake data are not publicly available from the WVDHHR. At Atlantic's and DTI's request, however, the WVDHHR (2015) reviewed maps of the Projects and determined that there are four surface water intakes within 3.0 miles of the ACP and there is one surface water intake within 3.0 miles of the SHP. The WVDHHR also determined that there are four surface water protection areas within 250 feet of the ACP and none within 250 feet of the SHP (WVDHHR, 2015). Atlantic and DTI reviewed Source Water Assessment Reports, prepared by the WVDHHR Office of Environmental Health Services Source Water Protection Unit, for each of the surface water intake facilities within 3.0 miles of the ACP and SHP (WVDHHR, 2003a -e). The Source Water Assessment Reports identify the Source Water Protection Watershed for each intake, which includes the entire watershed area upstream of the intake structure. The reports also identify Zones of Critical Concern (ZCC), which are considered surface water protection areas in corridors along waterbodies within Source Water Protection Watersheds. The ZCCs warrant a more detailed inventory and management due to their proximity to the source water and the susceptibility to potential contaminants. Table 2.2.5 -1 lists the surface water intake facilities within 3.0 miles of the Projects. Atlantic will continue to work with the water suppliers identified in the Source Water Assessment Reports to determine the length of the ZCCs (surface water protection areas) and Source Water Protection Watersheds that are crossed by the ACP and SHP Project facilities. The VDH -ODW provided Atlantic with location data for public surface water intakes (Soto, 2015). Based on review of these data, Atlantic identified three public surface water intakes located within 3.0 miles downstream of the proposed ACP facilities. Atlantic will continue to coordinate with the VDH -ODW to identify surface water protection areas associated with these surface water intakes. The NCDENR -DWR provided Atlantic with digital data on the locations of public surface water intakes in North Carolina. Based on review of this data, Atlantic determined that there are no public surface water intakes within 3.0 miles downstream of waterbody crossings along the proposed ACP pipelines and other facilities in North Carolina. The nearest public surface water intake is approximately 3.5 miles from the Project. In addition to maintaining data pertaining to surface water intakes, the NCDENR -DWR has established public water source watersheds for areas that drain to public surface water intakes. Atlantic evaluated these data and determined that seven of these watersheds are crossed by the proposed ACP facilities (see Table 2.2.5 -2). Similar data are not available for West Virginia, Virginia, or Pennsylvania. 2 -25 Resource Report 2 Water Use and Quality TABLE 2.2.5 -1 Surface Water Intake Facilities Within 3.0 Miles Downstream of the Atlantic Coast Pipeline and Supply Header Project Pipeline Segment/ County Waterbody Length of Zones of Length of Source Water or City /State or Surface Water Intake Associated with Critical Concern Protection Watershed Commonwealth Facility Public Water Intake Milepost Crossed (miles) Crossed (miles) Atlantic Coast Pipeline AP -1 Upshur County, WV Buckhannon Water Board Buckhannon River 30.0 1.2 12.6 Upshur County, WV Grand Badger Buckhannon River 33.0 TBD TBD Community Hawthorne Randolph County, WV Mill Creek Water Mill Creek 52.0 0.8 1.9 Department Randolph County, WV Huttonsville Medium Tygart River Valley 54.0 2.8 6.4 Security Prison AP -2 None Identified AP -3 City of Suffolk, VA Lake Kilby Lake Kilby and 55.9 TBD TBD Pitchkettle Creek City of Suffolk, VA Lake Meade Lake Kilby and 55.9 TBD TBD Pitchkettle Creek City of Suffolk, VA Raw Middle Lake Kilby and 55.9 TBD TBD Pitchkettle Creek AP -4 None Identified AP -5 None Identified Supply Header Project TL -635 None Identified TL -636 None Identified Sources: WVDHHR, 2015, 2003 a -e; Soto, 2015; NCDENR, 2014x, TABLE 2.2.5 -2 Water Source Watersheds Crossed by the Atlantic Coast Pipeline in North Carolina Approximate Mileposts (AP- Watershed Name 2 Mainline) County Water Supply Classification a Fishing Creek (Enfield) 322.1 to 331.6 Halifax and Nash Counties WS -IV NSW Tar River (Tar River Res.) 342.8 to 352.4 Nash County WS -IV NSW Toisnot Swamp 352.4 to 355.8 Nash County WS -III NSW Cape Fear River (Fayetteville) 422.3 to 426.3 Cumberland County WS -IV Cape Fear River (Smithfield Packing Co) 447.3 to 450.9 Cumberland County WS -IV Lumber River (Lumberton) 464.6 to 472.0 Robeson County WS -IV a Water Supply Classifications in North Carolina (NCDENR -DWR, 2014): WS -III = Waters used as sources of water supply for drinking, culinary, or food processing purposes; generally in low to moderately developed watersheds. WS -IV = Waters used as sources of water supply for drinking, culinary, or food processing purposes; generally in moderately to highly developed watersheds. NSW — Nutrient Sensitive Waters, supplemental classification where additional nutrient management is needed due to potential for excessive growth of microscopic or macroscopic vegetation. 2 -26 Resource Report 2 Water Use and Quality Based on a review of GIS data available from the Pennsylvania Spatial Data Access website and the PADEP's eMapPA, there are no public surface water intakes within 3.0 miles of the SHP (PADEP, 2015a and 2015b). However, the SHP facilities are located within two public water systems service areas. Public water systems service areas are defined as a system that provides water to the public for human consumption, which has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days out of the year (PADEP, 2015a). The TL -636 loop and the JB Tonkin Compressor Station are located within the Westmoreland County Municipal Authority public water systems service area. The Crayne Compressor Station is located within the Southwestern Pennsylvania Municipal Authority public water systems service area. 2.2.6 Horizontal Directional Drill Mud Water Use As noted in Table 2.2.2 -2, Atlantic and DTI are proposing to cross six waterbodies using the horizontal directional drill (HDD) method. In addition, the HDD method is being evaluated to cross beneath both the Blue Ridge Parkway and the Appalachian Trail at the same time. A detailed description of the HDD method is provided in Section 1.5.2.1 of Resource Report 1. Throughout the drilling process, a fluid mixture consisting of water and bentonite clay (a naturally occurring mineral) will be pumped into the drill hole to lubricate the bit, transport cuttings to the surface, and maintain the integrity of the hole. Small pits will be dug at or near the entry and exit points for the HDD to temporarily store the drilling fluid and cuttings. The fluid and cuttings will be pumped from the pits to an on -site recycling unit where the fluid will be processed for reuse. After completion of the HDD operations, the recovered drilling mud will be recycled or disposed of at an approved upland location or disposal facility. The estimated water requirements and withdrawal location for each of the proposed HDDs are summarized in Table 2.2.6 -1. All withdrawals will be conducted in accordance with State /Commonwealth regulations and permit requirements. TABLE 2.2.6 -1 Water Requirements for Horizontal Directional Drills for the Atlantic Coast Pipeline Atlantic and DTI continue to review waterbodies for supply capacity. 2 -27 Approximate Water County or City / State or Pipeline Segment / Requirement Locations of Water Project/HDD Commonwealth Milepost (millions of gallons) a Withdrawals ATLANTIC COAST PIPELINE Blue Ridge Parkway/ Augusta County, Virginia AP -1 Mainline / TBD TBD Appalachian Trail MP 153.8 James River Nelson and Buckingham Counties, AP- lMainline/ TBD TBD Virginia MP 180.4 Roanoke River Northampton and Halifax AP -2 Mainline / TBD TBD Counties, North Carolina MP 302.0 Cape Fear River Cumberland County, North AP -2 Mainline / TBD TBD Carolina MP 443.7 Nottoway River Southampton, Virginia AP -3 Lateral/ TBD TBD MP 33.2 Blackwater River Southampton County and City of AP -3 Lateral/ TBD TBD Suffolk, Virginia MP 39.1 South Elizabeth River City of Chesapeake, Virginia AP -3 Lateral/ TBD TBD MP 76.6 SUPPLY HEADER PROJECT No HDDs proposed N/A N/A Atlantic and DTI continue to review waterbodies for supply capacity. 2 -27 Resource Report 2 Water Use and Quality 2.2.7 Hydrostatic Test Water Withdrawal and Discharge After backfilling and all other construction activities that could affect the proposed ACP and SHP pipelines are complete, each pipeline will be hydrostatically tested, in accordance with 49 CFR 192 and applicable permit conditions, to verify that it is free from leaks and will provide the required margin of safety at operating pressures. Additional information about hydrostatic testing is provided in Section 1.5.1.6 of Resource Report 1. Water for hydrostatic testing will be withdrawn and discharged in accordance with State /Commonwealth regulations and required permits. Once hydrostatic testing is complete, the test water will be discharged to well- vegetated upland areas or back to the same source from which it was obtained. Water discharged over land will be directed through containment structures such as hay bales and /or filter bags. The discharge rate will be regulated using valves and energy dissipation devices to prevent erosion. No chemicals will be added to the test water during hydrostatic testing. Where required, Atlantic and DTI will verify coverage under each State /Commonwealth's National Pollutant Discharge Elimination System (NPDES) or State /Commonwealth - equivalent general permit prior to discharge of hydrostatic test water. Table 2.2.7 -1 summarizes the water withdrawal and discharge locations for the proposed ACP and SHP facilities. TABLE 2.2.7 -1 Water Requirements for Hydrostatic Testing for the Atlantic Coast Pipeline and Supply Header Project State or Commonwealth / Approximate Water Requirement Spread (Millions of Gallons) a Locations of Water Withdrawals and Discharges ATLANTIC COAST PI PELI NE West Virginia TBD TBD Virginia TBD TBD North Carolina TBD TBD SUPPLY HEADER PROJECT West Virginia TBD TBD Pennsylvania TBD TBD Atlantic and DTI continue to review waterbodies for supply and discharge capacity. 2.2.8 Sensitive Surface Waters Waterbodies can be considered sensitive to pipeline construction for several reasons, including the presence of critical aquatic habitat or special status species; high - quality recreational, visual resource, or historic value (e.g., waterbodies listed in the Nationwide Rivers Inventory [NRI]); sensitive State /Commonwealth use or high quality designations (e.g., coldwater fishery or trout water, Tier 3 waterbodies); or an important riparian area. NRI rivers crossed are summarized in Resource Report 8. Additionally, waterbodies that have special fisheries designations and /or protected species are addressed in greater detail in Resource Report 3, and time of year restrictions associated with State /Commonwealth designated streams are included in Appendix 2A -1 and 2A -2. Waterbodies can also be considered sensitive if they are of special interest to a land management agency, resource agency, or Native American Tribe. 2 -28 Resource Report 2 Water Use and Quality The proposed ACP and SHP pipeline facilities will cross 65 and 17 waterbodies, respectively, which are considered sensitive based on the criteria described above. A list of these waterbodies is provided in Table 2C in Appendix 2C. 2.2.9 Waterbody Construction Procedures Atlantic and DTI will use the open -cut, flume, dam - and -pump, cofferdam, conventional bore, or HDD methods to construct the proposed ACP and SHP pipelines across waterbodies. In each case and for each method, Atlantic and DTI will adhere to the measures specified in the Procedures; site - specific modifications to the Procedures requested by Atlantic and DTI and approved by the FERC; and any additional requirements identified in Federal or State /Commonwealth waterbody crossing permits. Atlantic and DTI will prepare a Plan of Development or Construction, Operation, and Maintenance Plan, which will identify construction procedures and mitigation measures to be implemented on federally managed lands. The proposed construction method for each waterbody crossing along the proposed ACP and SHP pipelines are identified in Appendix 2A. Detailed descriptions of the proposed crossing methods are provided in Section 1.5.2.1 in Resource Report 1. 2.2.10 Waterbody Construction- Related Impacts and Mitigation Impacts on waterbodies crossed by the proposed ACP and SHP facilities could occur as a result of construction activities in stream channels and on adjacent banks. Clearing and grading of stream banks, blasting (if required), in- stream trenching, trench dewatering, and backfilling could each result in temporary, local modifications of aquatic habitat involving sedimentation, increased turbidity, and decreased dissolved oxygen concentrations. In almost all cases, these impacts will be limited to the period of in- stream construction, and conditions will return to normal shortly after stream restoration activities are completed. Agency recommended time of year restrictions are listed in Tables 2A -1 and 2A -2 in Appendix 2A and discussed further in Resource Report 3. Vegetative clearing, grading for construction, and soil compaction by heavy equipment near stream banks could promote erosion of the banks and the transport of sediment into waterbodies by stormwater runoff To minimize these potential impacts, Atlantic and DTI will install equipment bridges, mats, and pads, as necessary. Additionally, Atlantic and DTI will locate additional temporary workspace (ATWS) at least 50 feet from stream banks (with the exception of site - specific modifications requested by Atlantic and DTI and approved by the FERC). Temporary sediment barriers will be installed around disturbed areas as outlined in the Plan and Procedures. Upon completion of construction, Atlantic and DTI will install permanent erosion control measures at stream crossing locations to provide long -term protection of water quality according to the Plan and Procedures and all permit requirements. Sedimentation and increased turbidity can occur as a result of in- stream construction activities, trench dewatering, or stormwater runoff from construction areas. In slow moving waters, increases in suspended sediments (turbidity) may increase the biochemical oxygen demand and reduce levels of dissolved oxygen in localized areas during construction. Suspended sediments also may alter the chemical and physical characteristics of the water column (e.g., 2 -29 Resource Report 2 Water Use and Quality color and clarity) on a temporary basis. Atlantic and DTI will use material excavated from the pipeline trench to backfill the trench once the pipe is installed to avoid introduction of foreign substances into waterbodies. Potential effects on fisheries due to increased turbidity and sedimentation resulting from in- stream construction activities are addressed in Resource Report 3. As noted above, Atlantic and DTI will install temporary equipment bridges to reduce the potential for turbidity and sedimentation resulting from construction equipment and vehicular traffic crossing waterbodies. Temporary bridges will be installed across waterbodies in accordance with the Procedures to allow construction equipment and personnel to cross. The bridges may include clean rock fill over culverts, timber mats supported by flumes, railcar flatbeds, flexi -float apparatuses, or other types of spans. Construction equipment will be required to use the bridges, except that the clearing and bridge installation crews will be allowed one pass through waterbodies before bridges are installed. The temporary bridges will be removed when construction and restoration activities are complete. In- stream construction will typically be completed within 24 to 48 hours at each stream crossing where waterbodies are less than 100 feet in width. After the pipeline is installed across a waterbody using one of the methods described above, the trench will be backfilled with native material excavated from the trench. The streambed profile will be restored to pre- existing contours and grade conditions to prevent scouring. The stream banks will then be restored as near as practicable to pre- existing conditions and stabilized. Stabilization measures could include seeding, tree planting, installation of erosion control blankets, or installation of riprap materials, as appropriate. Temporary erosion controls will be installed immediately following bank restoration. The waterbody crossing area will be inspected and maintained until restoration of vegetation is complete. During construction, the open trench may accumulate water, either from a high water table and seepage of groundwater into the trench or from precipitation. In accordance with the Plan and Procedures, and when necessary, trench water will be removed and discharged into an energy dissipation /sediment filtration device, such as a geotextile filter bag and /or straw bale structure, to minimize the potential for erosion and sedimentation. In areas where concrete - coated pipe is required, and in accordance with the SPCC Plan (to be provided in Appendix IF of the final Resource Report 1), concrete coating activities will occur a minimum of 100 feet from wetlands, waterbodies, springs, and karst features. 5 Concrete - coated pipe will be installed after the concrete is dried and will not be dispersed when submerged in water. Based on analysis of the Soil Survey Geographic Database, approximately 11 percent (65.5 miles) of the proposed ACP and SHP pipeline routes will cross areas with hard bedrock at depths of less than 60 inches (Soil Survey Staff, 2014). Construction in these areas may require blasting or other special construction techniques (see Section 6.2 of Resource Report 6). If blasting is necessary in a flowing waterbody, the use of controlled blasting techniques, where 5 hi comments filed with the Commission, the Virginia Department of Game and Inland Fisheries said that in- stream use of concrete should be done only in dry conditions, allowing all concrete to harden prior to returning stream flow 2 -30 Resource Report 2 Water Use and Quality small, localized detonations are utilized, will avoid or minimize the impacts of blasting and limit rock fracture to the immediate vicinity of these activities. Immediately following blasting, Atlantic and DTI will remove shot rock that impedes stream flow. All blasting techniques will be in compliance with Federal, State /Commonwealth, and local regulations governing the use of explosives and in accordance with the Blasting Plan (to be provided in Appendix IF of the final Resource Report 1). Preparation of the rock for blasting (e.g., drilling shot holes) is expected to cause enough disturbance in waterbodies to displace most aquatic organisms from the immediate vicinity of the blast. To further reduce the potential for impacts on aquatic organisms in flowing waterbodies, Atlantic and DTI will use techniques such as scare charges or banging on a submerged piece of pipe before the blast to disperse mobile aquatic organisms from the blast area before the blast is conducted. These steps will avoid or minimize the impact of blasting, if necessary, on aquatic organisms; nonetheless, organisms that are not displaced by pre -blast measures could be impacted. The SPCC Plan for the Projects (to be provided in Appendix IF of the final Resource Report 1) will describe measures that personnel and contractors will implement to prevent and, if necessary control, inadvertent spill of fuels, lubricants, solvents, and other hazardous materials that could affect water quality. As required in the Procedures and the SPCC Plan, hazardous materials, chemicals, lubricating oils, and fuels used during construction will be stored in upland areas at least 100 feet from wetlands and waterbodies. Refueling of construction equipment will be conducted at least 100 feet from wetlands and waterbodies, whenever possible. However, there will be certain instances where equipment refueling and lubricating may be necessary in or near waterbodies. For example, stationary equipment, such as water pumps for withdrawing hydrostatic test water, may need to be operated continuously on the banks of waterbodies and may require refueling in place. The SPCC Plan will address the handling of fuel and other materials associated with the Projects. As required by the Procedures, the SPCC Plan will be available during construction on each construction spread. As noted above, it is possible that previously undocumented sites with contaminated soils or groundwater could be discovered during construction of the Projects. Atlantic and DTI will prepare and implement a Contaminated Media Plan (to be provided in Appendix IF of the final Resource Report 1) to address these circumstances. The Contaminated Media Plan will describe measures to be implemented in the event that signs of contaminated soil and /or groundwater are encountered during construction. Signs of potential contamination could include discoloration of soil, chemical -like odors, or sheens on soils or water. Containment measures will be implemented to isolate and contain the suspected soil or groundwater contamination and collect and test samples of the soil or groundwater to identify the contaminants. Once the contaminants are identified, a response plan will be developed for crossing or avoiding the site. Use of the HDD method avoids impacts on waterbodies because it allows for the pipe to be installed underneath the ground surface without disturbance of the streambed or banks. However, a temporary, localized increase in turbidity could occur in the event of an inadvertent release of drilling fluid to the waterbody. Drilling fluid to be used on the ACP will be composed of water and bentonite clay (a naturally occurring mineral). The EPA does not list bentonite as a hazardous substance, and no long -term adverse environmental impacts are expected should an 2 -31 Resource Report 2 Water Use and Quality inadvertent release occur. Similarly, while native soils may mix with the drilling fluid as a result of the drilling process, no adverse environmental impacts from these materials are expected should an inadvertent return occur. Due to the possibility of drilling fluid loss during HDD operations, Atlantic and DTI will prepare and implement a Horizontal Directional Drill Fluid Monitoring, Operations, and Contingency Plan (to be provided in Appendix IF of the final Resource Report 1). The plan will describe measures to prevent, detect, and respond to inadvertent returns, including but not limited to, monitoring during drilling operations, the types of equipment and materials that must be readily available to contain and clean up drilling mud, containment and mitigation measures, notification requirements, and guidelines for abandoning the directional drill, if necessary. Once construction is complete, the pipeline will be buried below the ground surface and, therefore, will not impact water retention or floodplain storage within riparian corridors. Atlantic and DTI are routing the proposed pipelines to avoid sharp angle crossings or crossing streams where high stream energy could result in bank erosion. Atlantic and DTI will implement measures outlined in the Procedures to minimize impacts on the waterbodies crossed, including the installation of trench plugs to prevent water from flowing along the trenchline during and after construction. These measures will minimize potential impacts on surface and below ground hydrology. All waterbody crossings will be in accordance with the requirements identified in the Federal or State /Commonwealth waterbody crossing permits obtained for the Projects. During operations, the proposed pipelines will transport natural gas, which primarily is methane. Methane is buoyant at atmospheric temperatures and pressure, and disperses rapidly in air. The proposed pipelines will not carry liquids. Therefore, in the unlikely event of a leak, impacts on surface waters or groundwater from methane are not anticipated. Moreover, Atlantic and DTI will utilize a rigorous Integrity Management Plan, as discussed in Section 11.2.3 of draft Resource Report 11, to prevent leaks on the system. 6 2.2.11 Facility Operations In some cases, construction of aboveground facilities and access roads will require permanent impacts on waterbodies. These permanent impacts could include the placement of a culvert or bridge across the waterbody to accommodate a permanent access road or the relocation of a watercourse to allow for the siting of an aboveground facility. Atlantic and DTI will continue to adjust the footprint and /or location of the aboveground facilities and access roads in order to reduce or eliminate impacts on waterbodies. Where permanent impacts are required, Atlantic and Dominion will comply with all Federal and State /Commonwealth permit requirements. Permanent impacts on waterbodies will be discussed in more detail in the final version of Resource Report 2. Impacts during operation of the proposed facilities will be limited to instances where maintenance activities require excavation or repair in the vicinity of a waterbody. In such a case, the impacts and mitigation will be similar to those described above for construction activities. 6 In comments filed with the Commission, several individuals said that leaks in the pipeline could contaminate groundwater and surface water over time. 2 -32 Resource Report 2 2.3 WETLANDS Water Use and Quality The USACE and EPA jointly define wetlands as "those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions." The FERC defines wetlands as "any area that is not actively cultivated or rotated cropland and that satisfies the requirements of the current Federal methodology for identifying and delineating wetlands." 2.3.1 Wetland Types The proposed ACP Project area contains palustrine and estuarine wetlands, while the proposed SHP Project area only contains palustrine and riverine wetlands. Palustrine wetlands include all non -tidal wetlands dominated by lichens, emergent mosses, persistent emergents, shrubs, or trees. Salinity in these wetlands is below 0.5 percent. Estuarine wetlands are deepwater tidal habitats and adjacent tidal wetlands which are at least occasionally diluted by freshwater runoff Salinity gradients can range from hyperhaline to oligohaline. Riverine wetlands include all wetlands and deepwater habitats contained within a channel, with the exception of wetlands dominated by trees, shrubs, persistent emergents, emergent mosses, or lichens and habitats with water containing ocean - derived salts in excess of 0.5 percent (Cowardin et al., 1979). Based on field survey data augmented by U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory (NWI) data, the proposed ACP facilities will cross palustrine emergent (PEM), palustrine scrub -shrub (PSS), palustrine forested (PFO), estuarine intertidal emergent (E2E), and estuarine subtidal unconsolidated bottom (ElU) wetland types. Based on the same data sources, the proposed SHP pipeline facilities will cross PEM, PFO, and riverine unknown perennial unconsolidated bottom (RSUB) wetlands. Complete sets of NWI maps and field survey maps for the ACP and SHP are provided in Appendices 2E and 2F, respectively. 2.3.2 Existing Wetland Resources During the routing phase of the Projects, NWI data was used to provide a preliminary analysis of wetland resources and to assess where wetland impacts could be avoided or minimized. NWI data was also used to estimate the number, size, and locations of wetlands along the proposed pipeline routes prior to conducting wetland delineations in the field. Atlantic and DTI began conducting field surveys during the 2014 field season, on properties where survey permission was granted by the landowner, to identify and delineate wetlands within the ACP and SHP pipeline construction corridors and other work areas. The wetland delineation study area for the ACP and SHP consisted of a 300 - foot -wide corridor centered on the proposed pipeline centerlines, a 50- foot -wide corridor centered over access roads, and the construction footprints at aboveground facility sites. The wetland delineation for the Projects encompassed all areas required for installation of the proposed pipelines (i.e., the construction right -of -way, additional temporary workspace, staging areas, and access roads) and the aboveground facilities (i.e., compressor and M &R stations and other facilities). 2 -33 Resource Report 2 Water Use and Quality To date, wetland surveys have been completed for approximately 72.5 percent of the proposed ACP pipeline routes and TBD percent of the aboveground facility sites, access roads, and pipe storage and contractor yards. Wetland surveys have been completed over approximately 26 percent of the proposed SHP pipeline loops and TBD percent of the aboveground facility sites, access roads, and pipe storage and contractor yards. Wetland surveys will continue until the entire route has been surveyed. Wetlands were delineated in accordance with the 1987 Corps of Engineers Wetlands Delineation Manual and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Eastern Mountains and Piedmont Region (Version 2.0) or the Regional Supplement to the Corps of Engineers Wetlands Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0) (USAGE), 1987; USAGE, 2012; USAGE, 2010), as appropriate. All wetlands within the survey corridors were delineated regardless of the delineator's opinion regarding its jurisdictional status. Observations of vegetation, hydrology, and soils were recorded, and photographs were taken at each wetland. A more detailed description of the methodology used for wetland delineations will be included in the ACP and SHP wetland and waterbody delineation reports, which will be filed in a supplemental filing or as Appendices 2D and 2E, respectively, in the final Resource Report 2. 2.3.3 Wetland Reserve Program The Wetland Reserve Program was a program in which the U.S. Department of Agriculture (USDA) Natural Resource Conservation Service (NRCS) provided technical and financial support to private landowners who wanted to restore wetlands on their property. The program offered landowners a means to establish long -term conservation practices while achieving the greatest wetland functions and values for every acre enrolled in the program. Conservation easement options included 30 -year easements and permanent easements (USDA NRCS, 2008). The WRP program was repealed in the Agricultural Act of 2014 with the establishment of a new program, the Agricultural Conservation Easement Program (ACEP). However, the change does not affect the validity or terms of any conservation easements established through the WRP (USDA NRCS, 2014a). Based on a review of NRCS conservation easement data, no WRP or ACEP conservation easements will be crossed by the proposed ACP or SHP facilities (NRCS, 2014b). 2.3.4 Wetland Crossings 2.3.4.1 Pipeline Facilities Based on field and NWI data, there will be a total of 1,009 wetland crossings by the proposed ACP pipeline routes. Where the route crosses a single wetland more than once, each separate crossing was counted. The proposed ACP mainline facilities will have 345 wetland crossings along AP -1 (62 wetland crossings in West Virginia and 283 wetland crossings in Virginia), and 424 wetland crossings along AP -2 in North Carolina. The proposed ACP lateral pipeline facilities will have 230 wetland crossings along AP -3 (36 in North Carolina and 194 in Virginia), nine wetland crossings along AP -4 in Virginia, and one wetland crossing along AP -5 in Virginia. 2 -34 Resource Report 2 Water Use and Quality The combined linear crossing distance of all wetlands is 68.2 miles, accounting for approximately 12.3 percent of the combined length of the pipeline routes. Approximately 9.2 percent (6.3 miles) of the wetlands crossed by the ACP pipeline facilities are characterized as PEM, 78.3 percent (53.4 miles) are characterized as PFO, and 12.3 percent (8.4 miles) are characterized as PSS. The remaining 0.2 percent (0.1 mile) of wetlands consists of estuarine and unconsolidated bottom wetland types. Based on a combination of survey data and land use data for unsurveyed areas, 51 wetlands crossed by the ACP mainlines are characterized as farmed wetlands (5 on AP -1 in West Virginia; 36 on AP -1 in Virginia; five on AP -2 in North Carolina; seven on AP -3 in Virginia; and five on AP -3 in North Carolina). In total, approximately 651.6 acres of wetlands will be temporarily impacted by construction of the ACP pipeline facilities. Maintenance activities along the pipeline right -of -way will impact approximately 391.5 acres of wetlands due to the conversion of PFO and PSS wetlands to PEM wetland types. The proposed Project will result in the conversion of approximately 339.6 acres of PFO wetlands and 51.9 acres of PSS wetlands. Based on field and NWI data, there will be a total of 18 wetland crossings by the proposed SHP pipeline loops. The TL -635 pipeline loop in West Virginia will have five PEM and four RSUB wetland crossings. The TL -636 pipeline loop in Pennsylvania will have five PEM and four PFO wetland crossings. The combined linear crossing distance of all wetlands is 0.2 mile, accounting for approximately 0.5 percent of the combined length of the pipeline loops Approximately 2.7 acres of wetlands will be temporarily disturbed during construction of the SHP pipeline facilities. Maintenance activities along the pipeline right -of -way will impact approximately 0.3 acre of wetlands due to the conversion of PFO wetlands to PEM wetland types. Table 2.3.4 -1 provides a summary of wetland impacts by wetland type along the proposed ACP and SHP pipeline routes. Tables 2G -1 and 2G -2 in Appendix 2G provide a complete list of wetlands identified along the proposed pipeline routes with their MP locations, classification, crossing length, and area affected by construction and operation of the Projects. The data summarizing wetland crossings in Table 2.3.4 -1 and the tables located in Appendix 2G are based on field surveys conducted to date. In areas where survey has not yet been completed, NWI data was used to estimate the size and location of wetlands along the proposed ACP and SHP pipeline routes. For these wetlands, the Wetland ID shown in the tables in Appendix 2G is identified as NWL Maps showing the proposed ACP and SHP pipeline routes and field surveyed wetlands are provided in the ACP and SHP wetland delineation reports located in Appendix 2D and 2E, respectively. NWI wetlands are shown on maps provided in Appendix 2F. Federal Lands The ACP crosses four areas of federally managed land: the Monongahela National Forest; George Washington National Forest (which includes the Appalachian Trail); Blue Ridge Parkway; and Great Dismal Swamp National Wildlife Refuge (GDS -NWR). Additional information about these lands is provided in Section 8.7.1 of Resource Report 8. Table 2.3.4 -2 provides a summary of wetlands crossed within each of these Federal land units. The SHP does not cross any Federal Lands. 2 -35 Resource Report 2 Water Use and Quality TABLE 2.3.4 -1 Summary of Wetland Types Affected by Construction and Operation of the Atlantic Coast Pipeline and Supply Header Project Cowardin Crossing Length Temporary Construction Operational Impact Pipeline Facility /State or Commonwealth Classification a (Miles) Impact (acres)' (acres)` ATLANTIC COAST PIPELINE AP -1 West Virginia PEM 0.6 6.6 5.5 2 -36 PTO 0.1 1.1 0.9 PSS 0.0 0.1 0.1 West Virginia Subtotal 0.7 7.8 6.4 Virginia PEM 0.9 10.7 8.2 PTO 5.6 63.9 51.3 PSS 0.5 4.9 4.4 PUB 0.0 0.6 0.3 Virginia Subtotal 7.1 80.1 64.3 AP -2 North Carolina PEM 0.8 8.9 5.3 PTO 32.5 309.0 195.8 PSS 6.0 55.9 36.0 PUB 0.0 0.1 0.1 North Carolina Subtotal 39.3 373.9 237.2 AP -3 Virginia E2E 0.0 0.1 0.1 PEM 3.3 30.4 20.3 PTO 13.9 125.0 83.6 PSS 1.8 16.3 10.8 PUB 0.0 0.1 0.0 Virginia Subtotal 19.1 171.9 114.8 North Carolina PEM 0.6 4.6 3.3 PTO 1.0 9.5 6.2 PSS 0.0 0.5 0.3 North Carolina Subtotal 1.6 14.6 9.8 AP -4 Virginia PEM 0.0 0.3 0.2 PTO 0.3 2.5 1.7 PSS 0.0 0.4 0.3 Virginia Subtotal 0.4 3.1 2.1 AP -5 Virginia PTO 0.0 0.1 0.1 Virginia Subtotal 0.0 0.1 0.1 ACP Project Total 68.2 651.6 434.7 SUPPLY HEADER PROJECT TL -635 PEM 0.1 1.0 0.5 RSUB 0.0 0.6 0.3 West Virginia Subtotal 0.1 1.6 0.8 TL -636 Pennsylvania PEM 0.0 0.7 0.2 PTO 0.0 0.4 0.3 Pennsylvania Subtotal 0.0 1.1 0.5 SHP Project Total 0.0 2.7 1.3 2 -36 Resource Report 2 Water Use and Quality TABLE 2.3.4 -1 (cont'd) Summary of Wetland Types Affected by Construction and Operation of the Atlantic Coast Pipeline and Supply Header Project Wetland types according to Cowardin et al. (1979): PTO = palustrine forested PSS = palustrine scrub -shrub PEM = palustrine emergent PUB = palustrine unconsolidated bottom E = estuarine RSUB = riverine unknown perennial unconsolidated bottom Temporary wetland impacts are associated with a 75- foot -wide construction right -of -way through wetlands. Operational impacts are associated with scrub -shrub and forested wetlands. Operational requirements allow a 10- foot -wide corridor centered over the pipeline to be maintained in an herbaceous state, and for the removal of trees within 15 feet on either side of the pipeline. To determine conversion impacts on scrub -shrub wetlands, a 10- foot -wide corridor centered over the pipeline was assessed. A 30- foot -wide corridor centered over the pipeline was assessed for forested wetlands. Operational impacts shown for PEM wetlands indicate the acres of PEM wetlands located in the maintained easement. However, because the easement will be maintained in an herbaceous state, there will be no operational impacts on PEM wetlands. Note: The totals shown in this table may not equal the sum of addends due to rounding NOTE: Project impacts will be calculated as described in notes b and c above once the line is located. Current impact acreages were calculated by GIS staff based on the project segment, whether the wetland is crossed, and its agricultural status. TABLE 2.3.4 -2 Summary of Wetland Types Affected by Construction and Operation of the Atlantic Coast Pipeline on Federal Lands b Temporary wetland impacts are associated with a 75- foot -wide construction right -of -way through wetlands. Operational impacts are associated with scrub -shrub and forested wetlands. Operational requirements allow a 10- foot -wide corridor centered over the pipeline to be maintained in an herbaceous state, and for the removal of trees within 15 feet on either side of the pipeline. To determine conversion impacts on scrub -shrub wetlands, a 10- foot -wide corridor centered over the pipeline was assessed. A 30- foot -wide corridor centered over the pipeline was assessed for forested wetlands. Operational impacts shown for PEM wetlands indicate the acres of PEM wetlands located in the maintained easement. However, because the easement will be maintained in an herbaceous state, there will be no operational impacts on PEM wetlands. a Except for approximately 1,000 feet, the entire proposed line will be located within 300 feet of existing pipelines or electric transmission lines. Note: The totals shown in this table may not equal the sum of addends due to rounding. Note: Except for approximately 1,000 feet NOTE: Project impacts will be calculated as described in notes b and c above once the line is located. Current impact acreages were calculated by GIS staff based on the project segment, whether the wetland is crossed, and its agricultural status. 2 -37 Temporary Federal Land Cowardin Wetland Crossing Construction Impact Operational Impact Federal Land Unit Crossed (miles) Classification a Length (Miles) (acres) b (acres) Monongahela NF 17.7 PTO 0.0 0.2 0.2 George Washington NF 11.9 None 0.0 0.0 0.0 Blue Ridge Parkway 0.1 None 0.0 0.0 0.0 Great Dismal Swamp NWR a 1.7 PFO /PEM 0.9/0.1 8.8/0.8 5.8/0.6 ACP Project Total 2.8 9.8 6.6 a Wetland types according to Cowardin et al. (1979): PTO = palustrine forested PEM = palustrine emergent b Temporary wetland impacts are associated with a 75- foot -wide construction right -of -way through wetlands. Operational impacts are associated with scrub -shrub and forested wetlands. Operational requirements allow a 10- foot -wide corridor centered over the pipeline to be maintained in an herbaceous state, and for the removal of trees within 15 feet on either side of the pipeline. To determine conversion impacts on scrub -shrub wetlands, a 10- foot -wide corridor centered over the pipeline was assessed. A 30- foot -wide corridor centered over the pipeline was assessed for forested wetlands. Operational impacts shown for PEM wetlands indicate the acres of PEM wetlands located in the maintained easement. However, because the easement will be maintained in an herbaceous state, there will be no operational impacts on PEM wetlands. a Except for approximately 1,000 feet, the entire proposed line will be located within 300 feet of existing pipelines or electric transmission lines. Note: The totals shown in this table may not equal the sum of addends due to rounding. Note: Except for approximately 1,000 feet NOTE: Project impacts will be calculated as described in notes b and c above once the line is located. Current impact acreages were calculated by GIS staff based on the project segment, whether the wetland is crossed, and its agricultural status. 2 -37 Resource Report 2 2.3.4.2 Aboveground Facilities Water Use and Quality Aboveground facilities (i.e., compressor stations, M &R stations, and valves) have been sited such that impacts on wetlands will be avoided and minimized to the maximum extent practicable. Construction of the ACP compressor stations will impact TBD acres of wetlands, of which TBD acres will be permanently filled for operation of the facility. Modification and expansions at the existing SHP compressor stations will impact TBD acres of wetlands, of which TBD acres will be permanently filled for operation of each facility. Work at the Birch Ridge Compressor Station will be contained within the fenceline of the existing facility and will not impact any wetlands. 2.3.4.3 Access Roads Based on NWI maps and field surveys, access roads for the ACP will cross a total of 7,077.5 feet of wetlands. Access roads for the SHP Project will cross a total of TBD feet of wetlands. A summary of impacts associated with access roads is included in Table 2.3.4 -3. 2.3.4.4 Pipe Storage and Contractor Yards Use of pipe storage and contractor yards will temporarily impact approximately TBD acres of wetlands. 2.3.5 Wetland Crossing Methods In general, Atlantic and DTI will minimize impacts on wetlands by following the Procedures, site - specific modifications to the Procedures requested by Atlantic and DTI and approved by the FERC, and any additional requirements identified in Federal or State /Commonwealth wetland crossing permits. Atlantic and DTI will prepare a Plan of Development or Construction, Operation, and Maintenance Plan, which will identify construction procedures and mitigation measures to be implemented on federally managed lands. Both Projects will be constructed using a 75 -foot wide construction right -of -way for pipelines where they cross wetlands, with ATWS on both sides of the upland border to stage construction equipment, fabricate the pipelines, and store materials and excavated spoil. ATWS will be located in upland areas a minimum of 50 feet from the wetland edge (with the exception of site - specific modifications requested by Atlantic and DTI and approved by the FERC). Detailed descriptions of wetland crossing methods (e.g., the open cut and push -pull methods) are provided in Section 1.5.2.2 of Resource Report 1. These crossing methods are consistent with the requirements of the Procedures. The crossing method for each wetland during construction will depend on site - specific weather conditions, soil saturation, and soil stability. Tables 2G -1 and 2G -2 in Appendix 2G identify the proposed crossing method for each wetland along the proposed ACP and SHP pipeline routes and in other work areas. 2 -38 Resource Report 2 Water Use and Quality TABLE 2.3.4 -3 Summary of Wetlands Affected by Access Road Construction for the Atlantic Coast Pipeline and Supply Header Project Crossing Temporary Cowardin Length Construction Operational Facility /State or Commonwealth County /City Classification a (feet) Impacts (acres) Impacts (acres) ATLANTIC COAST PIPELINE AP -1 Access Roads Virginia Virginia Total AP -2 Access Roads North Carolina North Carolina Total Virginia Virginia Total AP -3 Access Roads North Carolina North Carolina Total Virginia Buckingham County Cumberland County Brunswick County Crreensville County Halifax County Nash County Johnston County Cumberland County Crreensville County Northampton County Southampton County City of Suffolk Virginia Total 59.6 AP -4 Access Roads TBD Virginia Brunswick County Virginia Total TBD ACP PROJECT TOTAL 27.7 SUPPLY HEADER PROJECT TBD TL -635 Access Roads 460.2 West Virginia TBD TL -636 Access Roads 35.3 Pennsylvania TBD SHP PROJECT TOTAL TBD a Wetland types according to Cowardin et al. (1979): PTO = palustrine forested PEM = palustrine emergent TBD PUB = palustrine unconsolidated bottom PEM 2 -39 PEM 59.6 TBD TBD PTO 420.6 TBD TBD PSS 27.7 TBD TBD PTO 460.2 TBD TBD PTO 35.3 TBD TBD PTO 521.7 TBD TBD 1,525.2 TBD TBD PEM 270.5 TBD TBD PTO 202.3 TBD TBD PEM 368.8 TBD TBD PTO 359.8 TBD TBD PTO 6,214.7 TBD TBD PEM 291.2 TBD TBD PSS 192.3 TBD TBD 7,899.5 TBD TBD PTO 47.0 TBD TBD 47.0 TBD TBD PEM 140.1 TBD TBD 140.1 TBD TBD PTO 2,927.3 TBD TBD PSS 155.6 TBD TBD PTO 3,490.8 TBD TBD 6,573.7 TBD TBD PTO 363.8 TBD TBD 363.8 TBD TBD 16,549.3 TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD Resource Report 2 Horizontal Directional Drill Water Use and Quality Several wetlands will be crossed as part of the proposed HDD river crossing discussed in Section 2.2.8 above. Utilization of the HDD method in these areas would avoid direct impacts on TBD acres of wetland, including TBD acres of PFO and TBD acres of PSS wetlands. Blasting Blasting may be necessary along portions of the proposed ACP and SHP pipeline routes where bedrock is located at or near the ground surface (see Section 6.2 of Resource Report 6). As noted above, Atlantic and DTI will prepare and implement a Blasting Plan which identifies procedures for the use, storage, and transportation of explosives consistent with safety requirements defined by Federal, State /Commonwealth, and local agency regulations. The Blasting Plan will be provided in Appendix IF of the final Resource Report 1. 2.3.6 Wetland Impacts and Mitigation Construction activities can affect wetlands in several ways. Clearing and grading of wetlands, trenching, backfilling, and trench dewatering can affect wetlands through the alteration of wetland vegetation and hydrology; loss or change to wildlife habitat (see Section 3.3.1.2 in Resource Report 3); erosion and sedimentation; and accidental spills of fuels and lubricants. Atlantic and DTI will minimize impacts on wetlands by following the wetland construction and restoration guidelines contained in the Plan and Procedures. The proposed wetland mitigation measures are intended to avoid wetland impacts to the greatest extent practicable; minimize the area and duration of disturbance; reduce soil disturbance; and enhance wetland revegetation after construction. Some of the measures proposed include: • limiting the construction right -of -way width to 75 -feet through wetlands (unless alternative, site - specific measures are requested by Atlantic and DTI and approved by the FERC and other applicable agencies); • locating ATWS at least 50 feet away from wetland boundaries (unless alternative, site - specific measures are requested by Atlantic and DTI and approved by the FERC and other applicable agencies); • limiting the operation of construction equipment within wetlands to only equipment essential for clearing, excavation, pipe installation, backfilling, and restoration; • preventing the compaction and rutting of wetland soils by operating equipment off of equipment mats or timber riprap in wetlands that are not excessively saturated; • restricting grading in wetlands to the area directly over the trenchline, except where necessary to provide necessary safety; 2 -40 Resource Report 2 Water Use and Quality • installing trench breakers or trench plugs at the boundaries of wetlands to prevent draining of wetlands; • segregating topsoil from the trench in non - saturated wetlands and returning topsoil to its original location during backfilling to avoid changes in the subsurface hydrology and to promote re- establishment of the original plant community by replacing the seed bank found in the topsoil; • installing temporary and permanent erosion and sediment control devices, and re- establishing vegetation on adjacent upland areas, to avoid erosion and sedimentation into wetlands; • removing woody stumps only from areas directly above the trenchline, or where they will create a safety hazard, to facilitate the re- establishment of woody species by existing root structures; • returning graded areas to their preconstruction contours to the greatest extent practicable, and returning excavated soil from the trench within the wetlands back to their original soil horizon to maintain hydrologic characteristics; • prohibiting the storage of chemicals, fuels, hazardous materials, and lubricating oils within 100 feet of a wetland; • prohibiting parking and /or fueling of equipment within 100 feet of a wetland; unless the Environmental Inspector determines there is no reasonable alternative, and appropriate steps (such as secondary containment structure) are taken; • dewatering the trench at a controlled rate into an energy dissipation /sediment filtration device, such as a geotextile filter bag or properly installed straw bale structure, to minimize the potential for erosion and sedimentation; • preventing the invasion or spread of undesirable exotic vegetation as described in the Invasive Plant Species Management Plan (to be provided in Appendix IF of final Resource Report 1); • limiting post - construction maintenance of vegetation to removal of trees with roots that could compromise the integrity of the pipeline within 15 feet of the pipeline centerline, and the maintenance of a 10 -foot wide corridor centered over the pipeline as herbaceous vegetation; and • annual monitoring of the success of wetland revegetation following construction until wetland revegetation is successful. Restoration /revegetation of wetlands will be considered successful when the affected wetland satisfies the Federal definition of a wetland (i.e., soils, hydrology, and vegetation); the vegetation is at least 80 percent of the cover documented for the wetland prior to construction, or at least 80 percent of the cover in adjacent, undisturbed areas of the wetland; or the plant species 2 -41 Resource Report 2 Water Use and Quality composition is consistent with early successional wetland plant communities in the affected ecoregion (if natural rather than active revegetation is used); and invasive plant species are absent, unless they are abundant in adjacent areas that were not disturbed by construction. 2.3.6.1 Wetland Vegetation The alteration of wetland vegetation is the primary impact of pipeline construction and right -of -way maintenance activities on wetlands. Most impacts associated with construction activities are considered temporary, but long -term impacts on wetland vegetation may occur depending on the time required for reestablishment of wetland functions associated with vegetation cover. Impacts on herbaceous wetlands (PEM) will be temporary as vegetation is expected to fully regenerate within one to three years. Impacts on PSS wetlands will take longer to reestablish to preconstruction conditions and may take five or more years depending on the age and complexity of the system. The impacts on PFO wetlands will be long -term due to the length of time required for a forest community to regenerate. However, many wetland functions such as surface water detention, nutrient recycling, particle retention, and some wildlife habitat will be restored prior to the full regeneration of the forest. Where necessary, wetlands will be planted with native vegetation and /or seeded with predetermined seed mixes (approved by the appropriate agencies) to promote the reestablishment of wetland vegetation. An Invasive Plant Species Management Plan (to be provided in Appendix IF of the final Resource Report 1) will be implemented to reduce and control the spread of invasive non - native species in the Project areas, including wetlands. Following pipeline construction, Atlantic and DTI will periodically remove woody species from wetlands to facilitate post - construction monitoring and inspections of the maintained pipeline right -of -way. In accordance with the Plan and Procedures, Atlantic and DTI will maintain a 10 -foot wide corridor centered over the pipeline in an herbaceous condition. Additionally, any woody species within 15 feet of the pipeline with roots that could compromise the integrity of the pipeline will be removed. These maintenance activities will not allow PSS and PFO wetlands to fully reestablish within the maintained right -of -way, which will alter these wetlands by changing their structure and function. Based on a combination of field survey data and NWI data, approximately 430.2 acres of PFO and PSS wetlands will be converted to herbaceous wetlands by the ACP and less than approximately 0.4 acre of PFO wetlands will be converted to herbaceous wetlands by the SHP. In order to reduce impacts on wetlands, Atlantic and DTI will make minor route adjustments, where practicable, based on the results of biological field surveys to minimize or avoid impacts on wetlands. Additionally, as discussed above, Atlantic and DTI will reduce the construction right -of -way to 75 -feet in wetlands and will cross some wetlands using the HDD crossing method. Finally, Atlantic and DTI will allow the majority of wetlands impacted during construction to return to their preconstruction condition as described above. 2.3.6.2 Compaction and Topsoil Mixing During construction, heavy machinery used for construction and transport of pipe sections can cause compaction and rutting of soils. Soil compaction can inhibit seed germination 2 -42 Resource Report 2 Water Use and Quality and increase the potential for runoff and siltation. To reduce the risk of compaction and rutting, construction equipment will work off of equipment mats or timber riprap in wetlands that are not excessively saturated. Topsoil mixing in non - saturated wetlands without construction mats can result in the mixing of topsoil with subsoil where topsoil is not segregated (topsoil is only segregated over the trenchline). This can result in changes to biological activities and chemical conditions in the wetland soils. Mixing of soil layers can also impede the reestablishment and natural recruitment of native vegetation following restoration. To reduce mixing in unsaturated wetlands, topsoil will be removed from the trench, segregated, and stored within the wetland adjacent to the trench. Upon completion of the work, subsoil will be returned to the trench, followed by topsoil. 2.3.6.3 Wetland Hydrology The type and quality of a wetland may change if permanent surface and /or subsurface hydrology alterations occur due to construction activities. To minimize impacts on wetlands from changes in surface hydrology, disturbed areas will be returned to their preconstruction elevations and contours. To minimize impacts on subsurface hydrology in unsaturated wetlands, subsoil will be backfilled first, followed by topsoil. Where necessary, trench plugs will also be installed at the wetland /upland interface to maintain wetland hydrology. 2.3.6.4 Erosion and Sediment Control The clearing of the construction right -of -way adjacent to and within a wetland, and grading in adjacent upland areas, can cause erosion of soil and the deposition of sediment into the wetland. Compaction of soil by construction equipment can affect runoff and may contribute to more erosion and sedimentation. To minimize impacts during clearing activities, Atlantic and DTI will cut the existing wetland vegetation to ground level, leaving existing root systems intact. Erosion and soil compaction will be minimized by the use of timber mats, timber riprap, or straw mats within a wetland, if wetland soils are not excessively saturated at the time of construction and can support construction equipment. Erosion will further be minimized by the installation of temporary erosion control devices between the upland construction areas and the wetland to limit the potential for soil to leave the right -of -way or enter a wetland. When excavating the trench, trench spoil will be placed a minimum of 50 feet away from wetland boundaries wherever possible. If dewatering of the trench is necessary, silt -laden trench water will be discharged into an energy dissipation /sedimentation filtration device, such as a geotextile filter bag or straw bale structure, to minimize the potential for erosion and sedimentation. Dewatering structures will be removed as soon as practicable after completion of dewatering activities. 2.3.6.5 Hazardous Material Spills The use of heavy equipment to complete pipeline installation across wetlands increases the potential for accidental releases of fuels, lubricants, and coolants. The accidental release of these materials could contaminate wetland soils and vegetation. Atlantic and DTI will minimize the potential impact of spills of hazardous materials by adhering to the SPCC Plan (to be provided in Appendix IF of the final Resource Report 1). Some examples of preventive measures include regular inspection of storage areas for leaks, replacement of deteriorating 2 -43 Resource Report 2 Water Use and Quality containers, and construction of containment systems around hazardous liquids storage facilities. The SPCC Plan also will restrict refueling or other liquid transfer areas within 100 feet of wetlands. 2.3.6.6 Blasting Resource Report 6 identifies areas along the proposed pipeline routes where hard shallow bedrock is anticipated and blasting could be required. Where bedrock is encountered in wetland trenches, the type of bedrock will determine the method of excavation. Blasting could impact wetlands by causing a fissure in the rock that would drain the wetland. Blasting could also result in a wetland conversion through the introduction of a new water source. Wetlands will be monitored after blasting to determine that no fissures are created. Any impacts on wetlands due to blasting will be addressed as part of the compensatory mitigation for the Projects. 2.3.6.7 Permanent Wetland Fill In some cases, construction of aboveground facilities and access roads will require the permanent filling of wetlands. Where permanent impacts are required, Atlantic and Dominion will comply with all applicable Federal and State /Commonwealth permit requirements. Permanent impacts on wetlands will be discussed in more detail in the final version of Resource Report 2. 2.3.7 Compensatory Mitigation Atlantic and DTI anticipate preparing Compensatory Wetland Mitigation Plans for the ACP and SHP as part of their applications to the USACE for a Department of the Army Permit under Section 404 of the Clean Water Act. Copies of these plans will be filed with the Commission when they have been approved by the USAGE. 2 -44 Resource Report 2 2.4 REFERENCES Water Use and Quality Barron, Alex. 2015. Phone Communication with Virginia Department of Environmental Quality. Communication on March 18, 2015. Cowardin, L.M., V. Carter, F.C. Golet, E.T. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, D.C. Jamestown, ND: Northern Prairie Wildlife Research Center Online. Available online at: httD: / /www.nDwrc.us�4s.�4ov /resource/ wetlands /classwet /. Accessed October 2014. Gregory, Lance. 2014. Email Communication with Virginia Department of Health, Office of Environmental Health. Communication on November 25, 2014. Johnson, Gale. 2015. Phone Communication with North Carolina Department of Environment and Natural Resources. Communication on April 7, 2015. Kozar, M.D. and Brown, D.P. 1995. Location and Site Characteristics of the Ambient Ground - Water- Quality- Monitoring Network in West Virginia. U.S. Geological Survey. Open - File Report 95 -130. LeGrand, H.E. 1988. Chapter 24 Region 21, Piedmont and Blue Ridge in the Geology of North America, Volume 0-2, Hydrogeology. The Geological Society of America. Available online at: httD: / /www.clemson.edu /ces /hydro /murdoch /Courses /Aquifer %20Systems /documents/ Heath %20and %20Back %20books /Chapter %2024.Ddf. Accessed January 2015. ....... Maupin, M.A., and Barber, N.L. 2005. Estimated withdrawals from principal aquifers in the United States, 2000. U.S. Geological Survey Circular 1279, 46 p. Available online at: httn: / /Dubs.us�4s.�4ov /circ /2005 /1279 /Ddf /circl279.i)df. Accessed January 2015. McCaffrey, Thomas. 2015. Email Communication with the Pennsylvania Department of Environmental Protection, Bureau of Safe Drinking Water. Communication on February 17, 2015. North Carolina Administrative Code. Ammended 1996. Subchapter 213- Surface Water and Wetland Standards; Section .0100- Procedures for Assignment of Water Quality Standards. Available online at: httD:Hrei)orts.oah. state .nc.us /ncac /title %2015a %20 - % 20environment %20and %20natural %20resources /chanter %2002 %20 -% o20environ mental %20mana�4ement/ subchapter %20b /subchapter %20b %20rules.pdf. Accessed November 2014. North Carolina Department of Environment and Natural Resources. 2013. North Carolina Erosion and Sediment Control Planning and Design Manual, revised 2009 and 2013. Available online at: httD: / /Dortal.ncdenr.or�4/web /lr /publications. Accessed February 2015. 2 -45 Resource Report 2 Water Use and Quality North Carolina Department of Environment and Natural Resources. 2014a. NC OneMap. Available online at: httD:H data. nconema_D.com /�4eoDortal /catalog /main /home.])a�4e. Accessed November 2014. North Carolina Department of Environment and Natural Resources. 2014b. Division of Waste Management Map. 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Available online at: http / /www.fs. usda.gov /Internet /FSE DOCUMENTS /stelprdb5330420.pdf. Accessed February 2015. 2 -47 Resource Report 2 Water Use and Quality U.S. Department of Agriculture, Forest Service. 2014. Record of Decision: Final Environmental Impact Statement for the Revised Land and Resource Management Plan. R8 -MB 143 C. Supervisor's Office, Roanoke, VA. Available online at: httD:Hwww. fs.usda.wv /Internet /FSE DOCUMENTS /stelprd3822823.pdf. Accessed February 2015. U.S. Department of Agriculture, Natural Resources Conservation Service. 2014a. ACEP, Agricultural Conservation Easement Program. USDA 2014 Farm Bill. Available online at: httD: / /www.nres.usda.�4ov /wps /portal /nres/ detail /national /programs /farmbill / ?cid= stelprdbl242382. Accessed November 2014. U.S. Department of Agriculture, Natural Resources Conservation Service. 2014b. Geospatial Data Gateway. Available online at: htt_ D://data�4ateway.nres.usda.�4ov /. Accessed November 2014. 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U.S. Environmental Protection Agency. 2012a. Superfund — List of Sediment Sites with Substantial Contamination. Available online at: http: / /www.ei)a.�4ov /sui)erfund /health/ conmedia/sediment /sites.htm. Accessed December 2014. U.S. Environmental Protection Agency. 2012b. Water: Water Quality Standards Academy — Basic Course: Supplemental Topics — 303(d) Submissions: Integrated Reporting Categories. Available online at: httD:Hwater.ei)a.�4OV /learn /training /standardsacademy /m4e7.6n. Accessed March 2015. U.S. Environmental Protection Agency. 2013a. Region 4: Ground Water Protection, Sole Source Aquifers in the Southeast. Available online at: httD://www.ei)a.�ov/re�ion4 /water /groundwater /r4ssa.html. Accessed November 2014. U.S. Environmental Protection Agency. 2013b. Superfund — Contaminated Media. Available online at: htt_D: / /www.epa. Gov/ sui)erfund /health/conmedia/index.htin. 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Available at: httD:H water. uses .�4ov /GIS /metadata/us�4swrd /XML/ aquifers us.xml. Accessed December 2014. 2 -49 Resource Report 2 Water Use and Quality U.S. Geological Survey. 2014a. Water - Quality Assessments of Principal Aquifers. Available online at: httD :Hwater.us�4s.�4ov /nawaa/studies /brag /. Accessed January 2015. Virginia Department of Environmental Quality. 1992. Virginia Erosion and Sediment Control Handbook, Third Edition. Available online at: httD: / /www.deci.virginia.�4ov/ Programs/ Water /StormwaterMana�4ement /Publications /ESCHandbook.aspx. Accessed February 2015 Virginia Department of Environmental Quality. 2005. Wellhead Protection Plan: Commonwealth of Virginia. Available online at: httD: / /www.dea.virginia.�4ov /Portals /0 /DEQ/ Water/ GroundwaterProtectionSteerin�4Committee /wellheadplan.Ddf. Accessed December 2014. Virginia Department of Environmental Quality. 2014a. Commonwealth of Virginia Groundwater Management Areas (GWMA). Available online at: httD: / /www.dea.. vir�4inia. Gov /Portals /0 /DEQ /Water /GroundwaterPermittin�4/Virginia %20GW MA %20Ma p effective 10114.ip�4 Accessed February 2015. Virginia Department of Environmental Quality. 2014b. Virginia Environmental GIS (VEGIS). Available online at: htti):// www. deci. vir�4inia .�4ov /ConnectWithDEQ /VEGIS/ VEGISDatasets.aspx. Accessed November 2014. Virginia Department of Environmental Quality. 2015. Final 2012 305(b)/303(d) Water Quality Assessment Integrated Report; GIS Data. Available online at: httD: / /www.deci.virginia. Gov /Programs /Water /W aterQualitvinfonnationTMDLs /W aterQualitvAsses sments /2012 305 (b)303(d)lnte�4ratedReport.aspx. Accessed February 2015. Virginia's Legislative Information System. 2014a. Virginia Law Website. Administrative Code, Chapter 260, Declaration of Groundwater Management Areas. Available online at: htti):Hlaw.lis.vir�4inia.�4ov/ admincode / title9/ a�4encv25 /chai)ter600 /section20 /. Accessed February 2015. Virginia's Legislative Information System. 2014b. Virginia Law Website. Administrative Code, Chapter 260, Water Quality Standards, Antidegradation Policy. Available online at: htti):Hlaw.lis.vir�4inia.�4ov/ admincode / title9/ a�4encv25 /chai)ter260 /section30. Accessed December 2014. Virginia's Legislative Information System. 2014c. Virginia Law Website. Administrative Code, Chapter 260, Water Quality Standards, Designation of Uses. Available online at: htti):Hlaw.lis.vir�4inia.�4ov/ admincode / title9 /a�4encv25 /chai)ter260 /sectionlO Accessed December 2014. Vivas, Joanne. 2014. Email Communication with Virginia Department of Health, Office of Drinking Water. Communication on November 24, 2014. 2 -50 Resource Report 2 Water Use and Quality West Virginia Code of State Regulations. 2014. Title 47 Legislative Rule: Series 2, Requirements Governing Water Quality Standards. Available online at: httD: / /www.deD .wv. �4ov/W WE /Programs /wq s/ Documents / Rule% 20Approved %20Letter %20and %20Ru1 e %o201tself% 202014 /WVDEP WQS 2014TriReview FinalRule47CSR2 June 2014.1)d f. Accessed November 2014. West Virginia Department of Environmental Protection. 2006. Erosion and Sediment Control Best Management Practice Manual. Available online at: https://apbs.dep.wv,gov/ dwwm /stormwater /BMP /index.html. Accessed February 2015. West Virginia Department of Environmental Protection. 2012a. Water and Waste Management — 2012 GIS Shapefiles — 303D— TMDL — Impaired streams in West Virginia. Available online at: httD: / /www.deD.wv.�ov /WWE /watershed /IR/Pa�4es /303d 305b.aspx . Accessed February 2015. West Virginia Department of Environmental Protection. 2012b. 2012 West Virginia Integrated Water Quality Monitoring and Assessment Report. US EPA approved. Available online at: httD: / /www.deD.wv.�4ov /WWE /watershed /IR/Pa�4es /303d 305b.aspx. Accessed February 2015 West Virginia Department of Environmental Protection. 2013. Solid Waste Facilities Permitting: Municipal Solid Waste Landfills. Available online at: httb://www.deb.wv. Gov /wwe /bennit /solidwaste /Pages /default.aspx. Accessed November 2014. West Virginia Department of Environmental Protection. 2014a. Water Quality Standards. Available online at: httD: / /www.dei).wv.�4ov/ WWE /Programs /was /Pages /default.asl)x. Accessed November 2014 West Virginia Department of Environmental Protection. 2014b. Leaking Tank Program: Database of all Leaking Underground Storage Tank Sites. Available online at: httD:// www.dei).wv.Gov /dlr /oer /lustmain /Pages /default.asi)x. Accessed November 2014. West Virginia Department of Environmental Protection. 2014c. Reporting Services: Bureau of Environmental Cleanup and Brownfields Regulated Storage Tank Cleanup Incidents. Available at: http: / /www.dei)rei)ortin�4services .state.i)a.us /ReportServer /Pages/ ReportViewer.aspx? /Cleanup /Tank Cleanup Incidents. Accessed November 2014. West Virginia Department of Health and Human Resources. 2003a. Source Water Assessment and Protection Program, Source Water Assessment Report, Buckhannon Water Board, Upshur County. PWSID: WV3304902. Available online at: htt_D: / /www.wvdhhr .or�4/oehs /eed /swap /search.cfin. Accessed February 2015. West Virginia Department of Health and Human Resources. 2003b. Source Water Assessment and Protection Program, Source Water Assessment Report, Grand Badger Community Hawthorne, Upshur County. PWSID: WV3304910. Available online at: htt_D://www. wvdhhr.or�4/oehs /eed /swap /search.cfin. Accessed February 2015. 2 -51 Resource Report 2 Water Use and Quality West Virginia Department of Health and Human Resources. 2003c. Source Water Assessment and Protection Program, Source Water Assessment Report, Huttonsville Medium Security Prison, Randolph County. PWSID: WV3304205. Available online at: htti): / /www.wvdhhr.or�4/oehs /eed /swag /search.cfin. Accessed February 2015. West Virginia Department of Health and Human Resources. 20034. Source Water Assessment and Protection Program, Source Water Assessment Report, Mill Creek Water Department, Randolph County. PWSID: WV3304209. Available online at: htti): / /www.wvdhhr.or�4/oehs /eed /swag / search.cfin. Accessed February 2015. West Virginia Department of Health and Human Resources. 2003e. Source Water Assessment and Protection Program, Source Water Assessment Report, Pine Grove Water Works, Wetzel County. PWSID: WV3305205. Available online at: htti): / /www.wvdhhr.or�4/oehs /eed /swag / search.cfin. Accessed February 2015. West Virginia Department of Health and Human Resources. 2015. 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