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Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307, 308, and 501 of the Clean Water Act (Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e) and (g), 1316 (b) and (c), 1317 (b) and (c), 1318, and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217.
50 FR 45247, Oct. 30, 1985, unless otherwise noted.
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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.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| kg/1000 kkg (pounds per million pounds) of metal poured | ||
| Copper (T) | 0.0307 | 0.0168 |
| Lead (T) | 0.0211 | 0.0104 |
| Zinc (T) | 0.0303 | 0.0116 |
| TTO | 0.0335 | 0.0109 |
| Oil and grease (for alternate monitoring) | 1.2 | 0.399 |
(b) Direct Chill Casting Operations.
| 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) | 0.928 | 0.506 |
| Lead (T) | 0.639 | 0.314 |
| Zinc (T) | 0.916 | 0.35 |
(c) Dust Collection Scrubber Operations.
| 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) | 0.552 | 0.301 |
| Lead (T) | 0.38 | 0.187 |
| Zinc (T) | 0.545 | 0.208 |
| Total phenols | 0.617 | 0.215 |
| TTO | 1.65 | 0.54 |
| Oil and grease (for alternate monitoring) | 21.5 | 7.18 |
(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to a POTW.
(e) Investment Casting.
| 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) | 5.84 | 2.86 |
| Zinc (T) | 8.37 | 3.19 |
| TTO | 25.4 | 8.29 |
| Oil and grease for alternate monitoring) | 330 | 110 |
(f) Melting Furnace Scrubber Operations.
| 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) | 1.81 | 0.988 |
| Lead (T) | 1.25 | 0.612 |
| Zinc (T) | 1.79 | 0.673 |
| Total phenols | 2.02 | 0.706 |
| TTO | 5.41 | 1.77 |
| Oil and grease (for alternate monitoring) | 70.6 | 23.5 |
(g) Mold Cooling Operations.
| 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) | 0.392 | 0.214 |
| Lead (T) | 0.27 | 0.132 |
| Zinc (T) | 0.387 | 0.148 |
| TTO | 0.428 | 0.14 |
| Oil and grease (for alternate monitoring) | 15.3 | 5.09 |