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Author/Creator
- United States138
- United States. Congress. Senate. Committee on Environment and Public Works47
- United States. Congress. House. Committee on Public Works29
- United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment29
- United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Water Resources27
- United States. Congress. House. Committee on Transportation and Infrastructure27
- Library of Congress. Congressional Research Service, issuing body26
- United States. Congress. Senate. Committee on Public Works. Subcommittee on Air and Water Pollution23
- United States. Congress. Senate. Committee on Environment and Public Works, author21
- United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Environmental Pollution21
- United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Investigations and Oversight20
- United States. Congress. House. Committee on Government Operations. Conservation and Natural Resources Subcommittee19
- United States. Environmental Protection Agency. Office of Water19
- Copeland, Claudia15
- United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Environmental Protection15
- United States. General Accounting Office15
- United States. Congress. Senate. Committee on Public Works14
- United States. Congress. House. Committee on Public Works and Transportation13
- United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Fisheries, Wildlife, and Water13
- United States. Environmental Protection Agency11