Proposed rule changes to the TMDL and NPDES permit programs : hearings before the Subcommittee on Fisheries, Wildlife, and Water and the Committee on Environment and Public Works, United States Senate, One Hundred Sixth Congress, second session, to consider S. 2417, Water Pollution Program Enhancements Act of 2000, and to oversee water regulations proposed by the Environmental Protection Agency concerning total maximum daily load (TMDL) levels and NPDES permits, March 1 and 23, 2000, May 6, 2000, Whitefield, New Hampshire; May 18, 2000, June 12, 2000, Hot Springs, Arkansas.