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3/21/80 5050.4 (6) Water Duality. (a) The Federal Water Pollution Control Act, as amended by the Clean Water Act of 1977 (commonly referred to as the Clean Water Act), provides the authority to establish water quality standards, control dis- charges into surface and subsurface waters, develop waste treatment management plane and practices, and issue permits:for discharges (section 40) and for dredged - or fill material (section 404). The environmental assessment shall include sufficient description of design, mitigation measures, and construction controls applicable to the proposal to demonstrate that state water quality standards and any Federal, state, and local permit requirements can be met. Such factors as storm and sanitary sewer design, requirements for additional water supplies or waste treatment capacity, erosion controls to prevent silta- tion, provisions for containing fuel spills and waste water from aircraft washing, designs to preserve existing drainage or to minimize dredge and fill, and location with regard to an aquifer or sensitive ecological area such as a wetlands area shall be considered to the extent applicable to the individual proposal. (b) Early consultation with local, state, and Federal agencies charged with implementation of water quality regulations and issuance of permits will normally identify any deficiencies in the proposal with regard to water quality or any additional information necessary to make ju&:ments on the significance of impacts. The environmental assessment shall refloct the results of consultation with regulating and permitting agencies and with agencies that must review permit applications, such as the U.S. Ptah and Wildlife Service, which may have specific concerns. Such consultation should be started at an early stage of the environmental assessment and may be com- pleted during the A-95 review. 1 A water quality certification is required under the Airport Act for approval of an Airport Development Aid Program application for a project involving airport location, a major runway extension, or a runway location. The requirement for information in the environmental assessment concerning this certification is the same as for an air quality certification as described in paragraph 47e(5)(e) above. 2 Consultation with the EPA regional office shall be undertaken if there is the potential for contamination of an aquifer designated by the EPA as a sole or principal drinking water resource for the area pursuant to section 1424(e) of the Safe Water Drinking Act, as amended. 3 The Fish and Wildlife Coordination Act applies to any proposal which would affect water resources (i.e., wetlands; groundwater; impoundment, diversion, deepening, controlling, modifying, polluting, dredging or filling of any stream or other body of water). For this situation instruc- tions in paragraph 47e(9)(c) below apply. Chap 5 Par 47 Page 35