§ 455.11 Compliance date for pretreatment standards for existing sources (PSES).
Current through Aug 22, 2025 · Read all of Part 455
All discharges subject to pretreatment standards for existing sources (PSES) in subparts A and B of this part must comply with the standards no later than September 28, 1993.
[61 FR 57549, Nov. 6, 1996]