US Code: Title 42,Chapter 65—Noise Control - Established under the Noise Control Act of 1972 (Public Law 92-574, October 27, 1972, 86 Statute 1234) and further refined by the Quiet Communities Act of 1978 (Public Law 95-609, November 8, 1978, 92 Statute 3079) - http://assembler.law.cornell.edu/uscode/html/uscode42/usc_sup_01_42_10_65.html