Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources (PSES): Pollutant or pollutant property Maximum for any 1 day Monthly average shall not exceed Milligrams per liter (mg/l) TTO 1 1.58 Cadmium 0.06 0.03 Chromium 0.65 0.30 Lead 1.12 0.41 Zinc 1.38 0.56 Fluoride 35.0 18.0 1 Total toxic organics.