Regulations last checked for updates: May 02, 2025

Title 40 - Protection of Environment last revised: Nov 02, 2025
§ 401.13 - Test procedures for measurement.

The test procedures for measurement which are prescribed at part 136 of this chapter shall apply to expressions of pollutant amounts, characteristics or properties in effluent limitations guidelines and standards of performance and pretreatment standards as set forth at parts 402 through 699 of this subchapter, unless otherwise specifically noted or defined in said parts.

authority: 33 U.S.C. 1251
source: 39 FR 4532, Feb. 1, 1974, unless otherwise noted.
cite as: 40 CFR 401.13