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 Cleaning 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) 0.0771 0.0421 Lead (T) 0.0791 0.039 Zinc (T) 0.114 0.0431 Oil and grease 3.0 1.0 TSS 3.8 1.5 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 0.017 Lead (T) 0.79 0.39 0.022 Zinc (T) 1.14 0.43 0.027 Oil and grease 30 10 0.501 TSS 38 15 1.0 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 (12/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) 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) 0.0093 0.0051 Lead (T) 0.0096 0.0047 Zinc (T) 0.0138 0.0052 Oil and grease 0.363 0.121 TSS 0.46 0.182 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 0.0021 Lead (T) 0.79 0.39 0.0027 Zinc (T) 1.14 0.43 0.0033 Oil and grease 30 10 0.0605 TSS 38 15 0.121 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 (1.45/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) Die Casting Operations. NSPS Pollutant or pollutant property Maximum for one 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 Oil and grease 0.259 0.0864 TSS and 0.33 0.13 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) 0.79 0.39 0.0019 Zinc (T) 1.14 0.43 0.0023 Total phenols 0.86 0.3 0.0017 Oil and grease 30 10 0.0432 TSS and 38 15 0.0864 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) 3 Within the range of 7.0 to 10.0 at all times. (d) Dust Collection Scrubber Operations. NSPS Pollutant of 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 Oil and grease 9.01 3.0 TSS 11.4 4.51 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 0.0511 Lead (T) 0.79 0.39 0.0661 Zinc (T) 1.14 0.43 0.0811 Total phenols 0.86 0.3 0.0601 Oil and grease 30 10 1.5 TSS 38 15 3.0 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 (0.036/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. (e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters. (f) Investment Casting. 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) 8.48 4.63 Lead (T) 8.7 4.3 Zinc (T) 12.6 4.74 Oil and grease 330 110 TSS 419 165 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 1.87 Lead (T) 0.79 0.39 2.42 Zinc (T) 1.14 0.43 2.97 Oil and grease 30 10 55.1 TSS 38 15 110 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 (1,320/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. (g) 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) 3.01 1.64 Lead (T) 3.09 1.52 Zinc (T) 4.45 1.68 Total phenols 3.36 1.17 Oil and grease 117 39.1 TSS 148 58.6 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 0.664 Lead (T) 0.79 0.39 0.859 Zinc (T) 1.14 0.43 1.05 Total phenols 0.86 0.3 0.781 Oil and grease 30 10 19.5 TSS 38 15 39.1 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 (0.468/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. (h) 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) 0.297 0.162 Lead (T) 0.305 0.151 Zinc (T) 0.44 0.166 Oil and grease 11.6 3.86 TSS 14.7 5.79 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 0.0656 Lead (T) 0.79 0.39 0.0849 Zinc (T) 1.14 0.43 0.104 Oil and grease 30 10 1.93 TSS 38 15 3.86 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 (46.3/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 21760, June 16, 1986]