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 Cleaning 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) 0.0771 0.0421 Lead (T) 0.0791 0.039 Zinc (T) 0.114 0.0431 (b) Casting Quench Operation. 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) 0.0093 0.0051 Lead (T) 0.0096 0.0047 Zinc (T) 0.0138 0.0052 TT0 0.029 0.0095 Oil and grease (for alternate monitoring) 0.363 0.121 (c) 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) 0.0068 0.0034 Zinc (T) 0.0098 0.0037 Total phenols 0.0074 0.0026 TTO 0.0308 0.01 Oil and grease (for alternate monitoring) 0.259 0.0864 (d) Dust Collection 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) 0.231 0.126 Lead (T) 0.237 0.117 Zinc (T) 0.343 0.129 Total phenols 0.258 0.09 TTO 0.613 0.2 Oil and grease (for alternate monitoring) 9.01 3.00 (e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW. (f) Investment Casting. 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) 8.48 4.63 Lead (T) 8.7 4.3 Zinc (T) 12.6 4.74 TTO 18.1 5.91 Oil and grease (for alternate monitoring 330 110 (g) 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) 3.01 1.64 Lead (T) 3.09 1.52 Zinc (T) 4.45 1.68 Total phenols 3.36 1.17 TTO 7.97 2.6 Oil and grease (for alternate monitoring) 117 39.1 (h) 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) 0.297 0.162 Lead (T) 0.305 0.151 Zinc (T) 0.44 0.166 TTO 0.935 0.304 Oil and grease (for alternate monitoring) 11.6 3.86 [50 FR 45247, Oct. 30, 1985; 51 FR 21760, June 16, 1986]