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466.21—Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
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.
(b)
The discharge of process wasterwater pollutants from all porcelain enameling coating operations shall not exceed the values set forth below:
| Pollutant or pollutant Property | Maximum for any 1 day | Maximum for monthly average | ||
|---|---|---|---|---|
| Mg/m2 (pounds per/1million ft 2) of Area Coated | ||||
| Chromium | 0.29 | (0.06) | 0.12 | (0.024) |
| Lead | 0.11 | (0.02) | 0.09 | (0.02) |
| Nickle | 0.98 | (0.02) | 0.7 | (0.15) |
| Zinc | 0.93 | (0.19) | 0.39 | (0.08) |
| Aluminum | 3.16 | (0.65) | 1.29 | (0.27) |
| Iron | 0.86 | (0.18) | 0.44 | (0.09) |
| Oil and grease | 13.86 | (2.84) | 8.32 | (1.71) |
| TSS | 28.42 | (5.82) | 13.86 | (2.84) |
| pH | (1) | (1) | (1) | (1) |
| 1 Within the range 7.5 to 10.0 at all times. | ||||
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.
(b)
The discharge of process wasterwater pollutants from all porcelain enameling coating operations shall not exceed the values set forth below:
| Pollutant or pollutant Property | Maximum for any 1 day | Maximum for monthly average | ||
|---|---|---|---|---|
| Mg/m2 (pounds per/1million ft 2) of Area Coated | ||||
| Chromium | 0.29 | (0.06) | 0.12 | (0.024) |
| Lead | 0.11 | (0.02) | 0.09 | (0.02) |
| Nickle | 0.98 | (0.02) | 0.7 | (0.15) |
| Zinc | 0.93 | (0.19) | 0.39 | (0.08) |
| Aluminum | 3.16 | (0.65) | 1.29 | (0.27) |
| Iron | 0.86 | (0.18) | 0.44 | (0.09) |
| Oil and grease | 13.86 | (2.84) | 8.32 | (1.71) |
| TSS | 28.42 | (5.82) | 13.86 | (2.84) |
| pH | (1) | (1) | (1) | (1) |
| 1 Within the range 7.5 to 10.0 at all times. | ||||
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