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 Metal Parameters 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 Organic Parameters 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 1 mg/L (ppm). [65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71023, Dec. 22, 2003]