New source performance standards.

Any new source subject to this subpart must achieve the following new source performance standards (NSPS), except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/62.3 million Sm 3 or lb/billion SCF of air scrubbed) effluent standards for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass standards and maximum day and maximum for monthly average concentration (mg/l) standards shall apply. Concentration standards and annual average mass standards shall only apply to non-continuous dischargers. (a) Casting Quench Operations. NSPS 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 Oil and grease 1.34 0.446 TSS 0.67 0.536 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10.0 at all times. Maximum for any 1 day Maximum for monthly average Annual average 1 (mg/l) 2 (mg/l) 2 Copper (T) 0.77 0.42 0.0076 Lead (T) 0.53 0.26 0.0067 Zinc (T) 0.76 0.29 0.008 Oil and grease 30 10 0.223 TSS 15 12 0.116 pH ( 3 ) ( 3 ) ( 3 ) 1 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (5.34/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. 3 Within the range of 7.0 to 10.0 at all times. (b) Die Casting Operations. NSPS 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 Oil and grease 0.259 0.0864 TSS 0.13 0.104 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10.0 at all times. Maximum for any 1 day Maximum for monthly average Annual average 1 (mg/l) 2 (mg/l) 2 Copper (T) 0.77 0.42 0.0015 Lead (T) 0.53 0.26 0.0013 Zinc (T) 0.76 0.29 0.0016 Total phenols 0.86 0.3 0.0017 Oil and grease 30 10 0.0432 TSS 15 12 0.0225 pH ( 3 ) ( 3 ) ( 3 ) 1 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (1.04/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. 3 Within the range of 7.0 to 10.0 at all times. (c) Melting Furnace Scrubber Operations. NSPS 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 Oil and grease 60.8 20.3 TSS 30.4 24.3 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10.0 at all times. Maximum for any 1 day Maximum for monthly average Annual average 1 (mg/l) 2 (mg/l) 2 Copper (T) 0.77 0.42 0.345 Lead (T) 0.53 0.26 0.304 Zinc (T) 0.76 0.29 0.365 Total phenols 0.86 0.3 0.406 Oil and grease 30 10 10.1 TSS 15 12 5.27 pH ( 3 ) ( 3 ) ( 3 ) 1 kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed. 2 These concentrations must be multiplied by the ratio of (0.243/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant. 3 Within the range of 7.0 to 10.0 at all times. (d) Mold Cooling Operations. NSPS 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 Oil and grease 11.8 3.94 TSS 5.91 4.73 pH ( 1 ) ( 1 ) 1 Within the range of 7.0 to 10.0 at all times. Maximum for any 1 day Maximum for monthly average Annual average 1 (mg/l) 2 (mg/l) 2 Copper (T) 0.77 0.42 0.067 Lead (T) 0.53 0.26 0.0591 Zinc (T) 0.76 0.29 0.071 Oil and grease 30 10 1.97 TSS 15 12 1.03 pH ( 3 ) ( 3 ) ( 3 ) 1 kg/1,000 kkg (pounds per million pounds) of metal poured. 2 These concentrations must be multiplied by the ratio of (47.3/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. 3 Within the range of 7.0 to 10.0 at all times. [50 FR 45247, Oct. 30, 1985; 51 FR 21762, June 16, 1986]