40 C.F.R. § 455.11
Compliance date for pretreatment standards for existing sources (PSES).
Cite as 40 C.F.R. § 455.11 (2026)
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]