Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new source subject to this subpart must achieve the following pretreatment standards: Regulated parameter Pretreatment standards 1 Maximum daily discharge Average monthly discharge must not exceed 1 Acetone 20.7 8.2 2 n-Amyl acetate 20.7 8.2 3 Ethyl acetate 20.7 8.2 4 Isopropyl acetate 20.7 8.2 5 Methylene chloride 3.0 0.7 1 Mg/L (ppm). [63 FR 50436, Sept. 21, 1998; 64 FR 48104, Sept. 2, 1999]