Pretreatment standards for existing sources.

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. (a) Casting Quench Operations. PSES Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1,000 kkg (pounds per million pounds) of metal poured Copper (T) 0.0344 0.0187 Lead (T) 0.0237 0.0116 Zinc (T) 0.0339 0.0129 TTO 0.093 0.0304 Oil and grease (for alternate monitoring) 1.34 0.446 (b) Die Casting Operations. PSES Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1,000 kkg (pounds per million pounds of metal poured) Copper (T) 0.0066 0.0036 Lead (T) 0.0046 0.0022 Zinc (T) 0.0066 0.0025 Total phenols 0.0074 0.0026 TTO 0.0196 0.0064 Oil and grease for alternate monitoring) 0.259 0.0864 (c) Melting Furnace Scrubber Operations. PSES Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed Copper (T) 1.56 0.852 Lead (T) 1.07 0.527 Zinc (T) 1.54 0.588 Total phenols 1.74 0.608 TTO 3.95 1.29 Oil and grease for alternate monitoring) 60.8 20.3 (d) Mold Cooling Operations. PSES Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average kg/1,000 kkg (pounds per million pounds) of metal poured Copper (T) 0.304 0.166 Lead (T) 0.209 0.103 Zinc (T) 0.3 0.114 TTO 0.821 0.268 Oil and grease for alternate monitoring) 11.8 3.94