CFR › Title 40 › Part 209 › §209.140 CFR §209.1Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkThese rules of practice govern all proceedings conducted in the issuance of an order under section 11(d) of the Noise Control Act of 1972, 42 U.S.C. 4910.