1. Regulations
  2. title 40
  3. chapter I-i26
  4. part 201
  5. subpart C
  6. § 201.21

View all text of Subpart C [§ 201.20 - § 201.28]

§ 201.21 - Quantities measured.

The quantities to be measured under the test conditions described below, are the A-weighted sound levels for “fast” or “slow” meter response as defined in the American National Standard S1.4-1971.

AUTHORITY: Noise Control Act of 1972, sec. 17(a), 86 Stat. 1234 (42 U.S.C. 4916(a)).

SOURCE: 45 FR 1263, Jan. 4, 1980, unless otherwise noted.

CITE AS: 40 CFR 201.21