Appendix G: Water Quality Technical A
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Appendix G Water Quality Technical Appendix This appendix documents the water quality technical analysis to support the impact analysis in the environmental impact statement (EIS). G.1 Background Information This section describes surface water quality that could be potentially affected by implementing the alternatives considered in this EIS. Changes in water quality due to changes in the Central Valley Project (CVP) and State Water Project (SWP) operation may occur in the Trinity River, Sacramento River, Clear Creek, Feather River, American River, Stanislaus River, San Joaquin River, Bay-Delta, and the CVP/SWP service area (south to Diamond Valley). Given the limited changes in outflow to the Pacific Ocean, water quality in the nearshore Pacific Ocean is unlikely to be affected by this project’s implementation, and therefore, this technical appendix will not analyze the nearshore Pacific Ocean. Appendix H, Water Supply Technical Appendix describes changes to surface water bodies and water supplies. This appendix focuses on constituents of concern that could be affected by changes in CVP/SWP water operation. The Final California 2014-2016 Integrated Report (Section 303(d) List/305(b) Report) identifies constituents of concern as well as other water quality reports. This section describes constituents’ sources, water quality effects, objectives, and guidelines, and plans to improve water quality. G.1.1 State-Designated Beneficial Uses of Surface Waters in the Study Area The Regional Water Quality Control Board (RWQCB) Basin Plans and Integrated Reports assessed and described water quality conditions throughout the study area. All waters of the State have specific beneficial uses specified in State or Tribal water quality standards. Each regional Water Board is charged with protecting these uses from pollution and nuisance. The use designations serve as a basis for establishing water quality objections and discharge prohibitions to protect the resource. Beneficial uses are summarized in Table G.1-1, Designated Beneficial Uses within Project Study Area. The water quality objectives established to protect these beneficial uses are found in Water Quality Control Plans, which define the limits of constituents of concern for protection of each beneficial use. Many of these water quality constituents of concern are prevalent throughout the study area. The origins and prevalence of these pollutants are discussed below. G-1 U.S. Bureau of Reclamation Water Quality Technical Appendix Table G.1-1. State-Designated Beneficial Uses within Project Study Area 1) - (FRSH) (REC e (CUL) ater Habitat (WARM) ater Habitat (COLD) W W ater Replenishment ater dwater Recharge (GWR) Recharge dwater 2) W - n Contact Water Recreation - Surface Water Body Municipal Domestic and Supply (MUN) Agricultural Supply (AGR) Industrial Service Supply (IND) Industrial Process Supply (PRO) Grou Fresh Navigation (NAV) (POW) Generation Hydropower Recreation Contact Water Non (REC Commercial andFishing Sport (COMM) Fresh Warm Fresh Cold (WILD) Habitat Wildlife or Endangered Threatened, Rare, Species (RARE) (MAR) Habitat Marine Organisms Aquatic of Migration (MIGR) Spawning, Reproduction, and/or Early Development (SPWN) Shellfish Harvesting (SHELL) Estuarine Habitat (EST) Aquaculture (AQUA) Native American Cultur Water Flood Attenuation/ Peak Flood Storage (FLD) Wetland Habitat (WET) Water QualityEnhancement (WQE) Trinity and Lower Klamath Rivers Lower Klamath River and Klamath Glen E E P P E E E P E E E E E E E E E E E E P E – – – Hydrologic Subarea Trinity Lake E E E E E E E E E E E E E E E – P E – – P – – – – Lewiston E E P P E E E E E E E P E E E – P E – – E – – – – Reservoir Middle Trinity River and E Surrounding E E E P E E E P E E E – E E E – E E – – & – – – – Hydrologic P Area Lower Trinity River and E E Surrounding E E E P E E E & E E E – E E E – E E P – & E2 – – – Hydrologic P P Area1 Sacramento River Basin Shasta Lake E E – – – – – E E E – E4 E4 E – – – E5,6 – – – – – – – Sacramento River: Shasta E E E – – – E E E3 E – E4 E4 E – – E5,6 E5,6 – – – – – – – Dam to Colusa Basin Drain G-2 U.S. Bureau of Reclamation Water Quality Technical Appendix 1) - (FRSH) (REC e (CUL) ater Habitat (WARM) ater Habitat (COLD) W W ater Replenishment ater dwater Recharge (GWR) Recharge dwater 2) W - n Contact Water Recreation - Surface Water Body Municipal Domestic and Supply (MUN) Agricultural Supply (AGR) Industrial Service Supply (IND) Industrial Process Supply (PRO) Grou Fresh Navigation (NAV) (POW) Generation Hydropower Recreation Contact Water Non (REC Commercial andFishing Sport (COMM) Fresh Warm Fresh Cold (WILD) Habitat Wildlife or Endangered Threatened, Rare, Species (RARE) (MAR) Habitat Marine Organisms Aquatic of Migration (MIGR) Spawning, Reproduction, and/or Early Development (SPWN) Shellfish Harvesting (SHELL) Estuarine Habitat (EST) Aquaculture (AQUA) Native American Cultur Water Flood Attenuation/ Peak Flood Storage (FLD) Wetland Habitat (WET) Water QualityEnhancement (WQE) Colusa Basin – E – – – – – – E3 – – E4 P4 E – – E6 E6 – – – – – – – Drain Sacramento River: Colusa Basin Drain to E E – – – – E – E3 E – E4 E4 E – – E5,6 E5,6 – – – – – – – Eye (“I”) Street Bridge Whiskeytown E E – – – – – E E E – E4 E4 E – – – E6 – – – – – – – Reservoir Clear Creek below E E – – – – – E3 E – E4 E4 E – – E5 E5,6 – – – – – – – Whiskeytown Reservoir Feather River below Lake Oroville (Fish E E – – – – – – E3 E – E4 E4 E – – E5,6 E5,6 – – – – – – – Barrier Dam to Sacramento River) American River below Lake Natoma E E E – – – – E E3 E – E4 E4 E – – E5,6 E5,6 – – – – – – – (Folsom Dam to Sacramento River) Yolo Bypass7 – E – – – – – – E E – E4 P4 E – – E5,6 E6 – – – – – – – G-3 U.S. Bureau of Reclamation Water Quality Technical Appendix 1) - (FRSH) (REC e (CUL) ater Habitat (WARM) ater Habitat (COLD) W W ater Replenishment ater dwater Recharge (GWR) Recharge dwater 2) W - n Contact Water Recreation - Surface Water Body Municipal Domestic and Supply (MUN) Agricultural Supply (AGR) Industrial Service Supply (IND) Industrial Process Supply (PRO) Grou Fresh Navigation (NAV) (POW) Generation Hydropower Recreation Contact Water Non (REC Commercial andFishing Sport (COMM) Fresh Warm Fresh Cold (WILD) Habitat Wildlife or Endangered Threatened, Rare, Species (RARE) (MAR) Habitat Marine Organisms Aquatic of Migration (MIGR) Spawning, Reproduction, and/or Early Development (SPWN) Shellfish Harvesting (SHELL) Estuarine Habitat (EST) Aquaculture (AQUA) Native American Cultur Water Flood Attenuation/ Peak Flood Storage (FLD) Wetland Habitat (WET) Water QualityEnhancement (WQE) Bay-Delta Sacramento– San Joaquin E E E E E – E – E E E E4 E4 E E – E5,6 E6 E E – – – – – Delta7,8,9 Suisun Bay – – E E – – E – E E E – – E E – E E – E – – – – – Carquinez – – E – – – E – E E E – – E E – E E – – E – – – – Straight San Pablo Bay – – E – – – E – E E E – – – E E – E E E E – – – – San Francisco – – E E – – E – E E E – – E E – E E E E – – – – – Bay Central San Francisco – – E – – – E – E E E – – E E – E E E E – – – – – Bay Lower San Francisco – – E – – – E – E E E – – E E – E E E E – – – – – Bay South San Joaquin River and Tulare Basin San Joaquin River: Friant E6, E E – E – – – – E3 E – E4 E4 E – – E5,6 – – – – – – – Dam to P5 Mendota Pool San Joaquin River: Sack E6, Dam to the P E – E – – – – E3 E – E4 – E – – E5,6 – – – – – – – P5 Mouth of Merced River G-4 U.S. Bureau of Reclamation Water Quality Technical Appendix 1) - (FRSH) (REC e (CUL) ater Habitat (WARM) ater Habitat (COLD) W W ater Replenishment ater dwater Recharge (GWR) Recharge dwater 2) W - n Contact Water Recreation - Surface Water Body Municipal Domestic and Supply (MUN) Agricultural Supply (AGR) Industrial Service Supply (IND) Industrial Process Supply (PRO) Grou Fresh Navigation (NAV) (POW) Generation Hydropower Recreation Contact Water Non (REC Commercial andFishing Sport (COMM) Fresh Warm Fresh Cold (WILD) Habitat Wildlife or Endangered Threatened, Rare, Species (RARE) (MAR) Habitat Marine Organisms Aquatic of Migration (MIGR) Spawning, Reproduction, and/or Early Development (SPWN) Shellfish Harvesting (SHELL) Estuarine Habitat (EST) Aquaculture (AQUA) Native American Cultur Water Flood Attenuation/ Peak Flood Storage (FLD) Wetland Habitat (WET) Water QualityEnhancement (WQE) San Joaquin River: Mouth of P E – E – – – – E3 E – E4 – E – – E5,6 E6 – – – – – – – Merced River to Vernalis New Melones E E – – – – – E E E – – E4 E – – – – – – – – – – – Reservoir Tulloch P E – – – – – E E E – E4 – E – – – – – – – – – – – Reservoir Stanislaus River: Goodwin P E E E – – – E E3 E – E4 E4 E – – E5 E5,6 – – – – – – – Dam to San Joaquin River San Luis E E E – – – – E E E – E4 – E – – – – – – – – – – – Reservoir O’Neill E E – – – – – – E E – E4 – – – – – – – – – – – – – Reservoir California E E E E – – – E E E – – – E – – – – – – – – – – – Aqueduct Delta-Mendota E E – – – – – – E E – E4 – E – – – – – – – – – – – Canal Sources: State Water Resources Control Board (SWRCB) 2006; Hoopa Valley TEPA 2008; Central Valley RWQCB 2018a; North Coast RWQCB 2018; San Francisco Bay RWQCB 2017. Notes: E: Existing Beneficial Use; P: Potential Beneficial Use 1 Includes beneficial uses for the Trinity River within the Hoopa Valley Indian Reservation as designated by the Hoopa Valley Indian Reservation Water Quality Control Plan, which, in addition to beneficial uses shown, also designates the Lower Trinity River as a Wild and Scenic waterway, providing for scenic, fisheries, wildlife and recreational purposes. 2 Not all beneficial uses are present uniformly throughout this water body. They have been summarized to reflect beneficial uses present in multiple segments of the water body. G-5 U.S. Bureau of Reclamation Water Quality Technical Appendix 3 Canoeing and rafting included in REC-1 designation. 4 Resident does not include anadromous. Any Segments with both COLD and WARM beneficial use designations will be considered COLD water bodies for the application of water quality objectives. 5 Cold water protection for salmon and Steelhead. 6 Warm water protection for Striped Bass (Morone saxatilis), sturgeon (Acipenser), and shad (Alosa sapidissima and Dorosoma petenense).