Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available, 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/1,000 kkg or lb/million lb of sand reclaimed; kg/62.3 million Sm3 or lb/billion SCF of air scrubbed) effluent limitations for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass limitations and maximum day and maximum for monthly average concentration (mg/l) limitations shall apply. Concentration limitations and annual average mass limitations shall only apply to non-continuous dischargers.
(a) Casting Cleaning Operations.
BPT Effluent Limitations
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) | 0.0129 | 0.0071 |
Lead (T) | 0.0353 | 0.0174 |
Zinc (T) | 0.0656 | 0.025 |
Oil and grease | 1.34 | 0.446 |
TSS | 1.7 | 0.67 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Copper (T) | 0.29 | 0.16 | 0.0029 |
Lead (T) | 0.79 | 0.39 | 0.0098 |
Zinc (T) | 1.47 | 0.56 | 0.0179 |
Oil and grease | 30 | 10 | 0.223 |
TSS | 38 | 15 | 0.446 |
pH | (3) | (3) | (3) |
(b) Casting Quench Operations
BPT Effluent Limitations
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) | 0.0138 | 0.0076 |
Lead (T) | 0.0376 | 0.0185 |
Zinc (T) | 0.0699 | 0.0266 |
Oil and grease | 1.43 | 0.476 |
TSS | 1.81 | 0.713 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Copper (T) | 0.29 | 0.16 | 0.0031 |
Lead (T) | 0.79 | 0.39 | 0.0105 |
Zinc (T) | 1.47 | 0.56 | 0.019 |
Oil and grease | 30 | 10 | 0.238 |
TSS | 38 | 15 | 0.476 |
pH | (3) | (3) | (3) |
(c) Dust Collection Scrubber Operations.
BPT Effluent Limitations
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
---|---|---|
kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed | ||
Copper (T) | 0.218 | 0.12 |
Lead (T) | 0.593 | 0.293 |
Zinc (T) | 1.1 | 0.421 |
Total phenols | 0.656 | 0.225 |
Oil and grease | 22.5 | 7.51 |
TSS | 28.5 | 11.3 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | (mg/l)2 | |
Copper (T) | 0.29 | 0.16 | 0.0488 |
Lead (T) | 0.79 | 0.39 | 0.165 |
Zinc (T) | 1.47 | 0.56 | 0.3 |
Total phenols | 0.86 | 0.3 | 0.15 |
Oil and grease | 30 | 10 | 3.76 |
TSS | 38 | 15 | 7.51 |
pH | (3) | (3) | (3) |
(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.
(e) Investment Casting.
BPT Effluent Limitations
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) | 3.19 | 1.76 |
Lead (T) | 8.7 | 4.3 |
Zinc (T) | 16.2 | 6.17 |
Oil and grease | 330 | 110 |
TSS | 419 | 165 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Copper (T) | 0.29 | 0.16 | 0.716 |
Lead (T) | 0.79 | 0.39 | 2.42 |
Zinc (T) | 1.47 | 0.56 | 4.41 |
Oil and grease | 30 | 10 | 55.1 |
TSS | 38 | 15 | 110 |
pH | (3) | (3) | (3) |
(f) Melting Furnace Scrubber Operations.
BPT Effluent Limitations
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
---|---|---|
kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed | ||
Copper (T) | 1.02 | 0.561 |
Lead (T) | 2.77 | 1.37 |
Zinc (T) | 5.15 | 1.96 |
Total phenols | 3.01 | 1.05 |
Oil and grease | 105 | 35 |
TSS | 133 | 52.6 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Copper (T) | 0.29 | 0.16 | 0.228 |
Lead (T) | 0.79 | 0.39 | 0.771 |
Zinc (T) | 1.47 | 0.56 | 1.4 |
Total phenols | 0.86 | 0.3 | 0.701 |
Oil and grease | 30 | 10 | 17.5 |
TSS | 38 | 15 | 35 |
pH | (3) | (3) | (3) |
(g) Mold Cooling Operations.
BPT Effluent Limitations
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) | 0.0428 | 0.0236 |
Lead (T) | 0.117 | 0.0576 |
Zinc (T) | 0.217 | 0.0827 |
Oil and grease | 4.43 | 1.48 |
TSS | 5.61 | 2.22 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Copper (T) | 0.29 | 0.16 | 0.0096 |
Lead (T) | 0.79 | 0.39 | 0.0325 |
Zinc (T) | 1.47 | 0.56 | 0.0591 |
Oil and grease | 30 | 10 | 0.738 |
TSS | 38 | 15 | 1.48 |
pH | (3) | (3) | (3) |
(h) Slag Quench Operations.
BPT Effluent Limitations
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
---|---|---|
kg/1,000 kkg (pounds per million pounds) of metal poured | ||
Cooper (T) | 0.0527 | 0.0291 |
Lead (T) | 0.144 | 0.0709 |
Zinc (T) | 0.267 | 0.102 |
Oil and grease | 5.46 | 1.82 |
TSS | 6.91 | 2.73 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Copper (T) | 0.29 | 0.16 | 0.0118 |
Lead (T) | 0.79 | 0.39 | 0.04 |
Zinc (T) | 1.47 | 0.56 | 0.0728 |
Oil and grease | 30 | 10 | 0.909 |
TSS | 38 | 15 | 1.82 |
pH | (3) | (3) | (3) |
(i) Wet Sand Reclamation Operations.
BPT Effluent Limitations
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
---|---|---|
kg/1,000 kkg (pounds per million pounds) of sand reclaimed | ||
Cooper (T) | 0.217 | 0.12 |
Lead (T) | 0.59 | 0.291 |
Zinc (T) | 1.1 | 0.418 |
Total phenols | 0.642 | 0.224 |
Oil and grease | 22.4 | 7.47 |
TSS | 28.4 | 11.2 |
pH | (1) | (1) |
Maximum for any 1 day | Maximum for monthly average | Annual average1 | |
---|---|---|---|
(mg/l)2 | (mg/l)2 | ||
Cooper (T) | 0.29 | 0.16 | 0.0485 |
Lead (T) | 0.79 | 0.39 | 0.164 |
Zinc (T) | 1.47 | 0.56 | 0.299 |
Total phenols | 0.86 | 0.3 | 0.149 |
Oil and grease | 30 | 10 | 3.73 |
TSS | 38 | 15 | 7.47 |
pH | (3) | (3) | (3) |
[50 FR 45247, Oct. 30, 1985; 51 FR 21761, June 16, 1986]