View all text of Subpart B [§ 437.20 - § 437.26]
§ 437.25 - Pretreatment standards for existing sources (PSES).
Except as provided in 40 CFR 403.7, 403.13 or § 437.20(b), and no later than December 22, 2003, any existing source subject to this subpart must achieve the following pretreatment standards:
Pretreatment Standards (PSES)
Regulated
parameter | Maximum daily 1 | Maximum monthly avg. 1 | Chromium | 0.947 | 0.487 | Cobalt | 56.4 | 18.8 | Copper | 0.405 | 0.301 | Lead | 0.222 | 0.172 | Tin | 0.249 | 0.146 | Zinc | 6.95 | 4.46 | Bis(2-ethylhexyl) phthalate | 0.267 | 0.158 | Carbazole | 0.392 | 0.233 | n-Decane | 5.79 | 3.31 | Fluoranthene | 0.787 | 0.393 | n-Octadecane | 1.22 | 0.925 |
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1 mg/L (ppm).