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421.26—Pretreatment standards for new sources.
Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in primary aluminum process wastewater introduced into a POTW shall not exceed the following values:
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of paste produced | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of anodes cast | ||
| Benzo(a)pyrene | 0.007 | 0.003 |
| Nickel | .115 | .077 |
| Fluoride | 12.440 | 5.518 |
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| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of anodes baked | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
(d)
Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of cryolite recovered | ||
| Benzo(a)pyrene | 1.181 | 0.547 |
| Cyanide | 157.600 | 70.060 |
| Nickel | 80.570 | 35.030 |
| Fluoride | 29,430.000 | 13,310.000 |
(e)
Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of cryolite recovered | ||
| Benzo(a)pyrene | 1.181 | 0.547 |
| Cyanide | 157.600 | 70.060 |
| Nickel | 19.270 | 12.960 |
| Fluoride | 2,084.000 | 924.800 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction | ||
| Benzo(a)pyrene | 0.045 | 0.021 |
| Nickel | .738 | .496 |
| Fluoride | 79.790 | 35.400 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of aluminum product from direct chill casting | ||
| Benzo(a)pyrene | (1) | (1) |
| Nickel | .731 | .492 |
| Fluoride | 79.080 | 35.090 |
| 1 There shall be no discharge allowance for this pollutant. | ||
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pound per million pounds) of aluminum product from rod casting | ||
| Benzo(a)pyrene | (1) | (1) |
| Nickel | .057 | .038 |
| Fluoride | 6.188 | 2.746 |
| 1 There shall be no discharge allowance for this pollutant. | ||
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pound per million pounds) of aluminum product from stationary casting or shot casting | ||
| Benzo(a)pyrene | .000 | |
| Nickel | .000 | .000 |
| Fluoride | .000 | .000 |
[49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52 FR 25559, July 7, 1987]
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