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§ 439.46 Pretreatment standards for existing sources (PSES).

40 CFR 439.46

Citation40 CFR 439.46
CorpusDaily eCFR
Displayed edition2026-09-08
Last updated2026-09-08

§ 439.46 Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart must achieve the following standards by September 21, 2001:

Pretreatment Standards (PSES)

Regulated parameterMaximum daily 1Maximum monthly average 1
Acetone20.78.2
n-Amyl acetate20.78.2
Ethyl acetate20.78.2
Isopropyl acetate20.78.2
Methylene chloride3.00.7
1 mg/L (ppm).

[68 FR 12274, Mar. 13, 2003]