Water Quality

This memorandum provided guidance to Federal agencies on how to carry out an evaluation of the impact of federally assisted projects on groundwater supplies.

This memorandum provided guidance to the Federal agencies on incorporating pollution prevention principles, techniques, and mechanisms into their planning and decision making processes and evaluating and reporting those efforts in documents prepared pursuant to the National Environmental Policy Act.

This 1980 guidance provided direction on applying section 404(r) of the Clean Water Act to Federal projects involving the discharge of dredged or fill materials into waters of the United States.