40 CFR 421.4 - Compliance date for pretreatment standards for existing sources (PSES).

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 01, 2023

View all text of Part 421 [§ 421.1 - § 421.337]

§ 421.4 - Compliance date for pretreatment standards for existing sources (PSES).

The PSES compliance deadline in subparts A through M is March 8, 1987. The PSES compliance deadline for plants in subparts N through AE is September 20, 1988.

[50 FR 52776, Dec. 26, 1985]