40 CFR 439.26 - Pretreatment standards for existing sources (PSES).
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§ 439.26 Pretreatment standards for existing sources (PSES).
Pretreatment Standards (PSES)
|Regulated parameter||Maximum daily 1||Maximum monthly average 1|
1 mg/L (ppm).
[68 FR 12273, Mar. 13, 2003]