Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources (PSNS): Subpart BN—Sodium Chlorate Pollutant or pollutant property PSNS effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days Milligrams per liter (mg/l) Antimony (T) 1.6 0.8 Chromium (T) 0.64 0.32 In cases where POTWs find it necessary to impose mass limitations, the following equivalent mass limitations are provided as an alternate: The limitations for antimony(T) and chromium(T) are the same as specified in § 415.663. [49 FR 33428, Aug. 22, 1984; 49 FR 37594, Sept. 25, 1984]