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471.22—Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
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 available technology economically achievable (BAT):
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium rolled with emulsions | ||
| Chromium | 0.033 | 0.014 |
| Zinc | 0.109 | 0.046 |
| Ammonia | 9.95 | 4.37 |
| Fluoride | 4.44 | 1.97 |
(b) Forging spent lubricants—
Subpart B—BAT. There shall be no discharge of process wastewater pollutants.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of forged magnesium cooled with water | ||
| Chromium | 0.127 | 0.052 |
| Zinc | 0.422 | 0.177 |
| Ammonia | 38.5 | 17.0 |
| Fluoride | 17.2 | 7.63 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium forged | ||
| Chromium | 0.002 | 0.0007 |
| Zinc | 0.006 | 0.003 |
| Ammonia | 0.532 | 0.234 |
| Fluoride | 0.238 | 0.106 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium cast with direct chill methods | ||
| Chromium | 1.74 | 0.711 |
| Zinc | 5.77 | 2.41 |
| Ammonia | 527 | 232 |
| Fluoride | 235 | 105 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium surface treated | ||
| Chromium | 0.205 | 0.084 |
| Zinc | 0.681 | 0.285 |
| Ammonia | 62.1 | 27.3 |
| Fluoride | 27.8 | 12.3 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium surface treated | ||
| Chromium | 0.832 | 0.340 |
| Zinc | 2.76 | 1.16 |
| Ammonia | 252 | 111 |
| Fluoride | 113 | 49.9 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium sawed or ground | ||
| Chromium | 0.009 | 0.004 |
| Zinc | 0.029 | 0.012 |
| Ammonia | 2.60 | 1.15 |
| Fluoride | 1.16 | 0.515 |
(i) Degreasing spent solvents—Subpart B—BAT.
There shall be no discharge of process wastewater pollutants.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium sanded and repaired or forged | ||
| Chromium | 0.273 | 0.112 |
| Zinc | 0.904 | 0.378 |
| Ammonia | 82.5 | 36.3 |
| Fluoride | 36.9 | 16.4 |
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 available technology economically achievable (BAT):
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium rolled with emulsions | ||
| Chromium | 0.033 | 0.014 |
| Zinc | 0.109 | 0.046 |
| Ammonia | 9.95 | 4.37 |
| Fluoride | 4.44 | 1.97 |
(b) Forging spent lubricants—
subpart B—BAT. There shall be no discharge of process wastewater pollutants.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of forged magnesium cooled with water | ||
| Chromium | 0.127 | 0.052 |
| Zinc | 0.422 | 0.177 |
| Ammonia | 38.5 | 17.0 |
| Fluoride | 17.2 | 7.63 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium forged | ||
| Chromium | 0.002 | 0.0007 |
| Zinc | 0.006 | 0.003 |
| Ammonia | 0.532 | 0.234 |
| Fluoride | 0.238 | 0.106 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium cast with direct chill methods | ||
| Chromium | 1.74 | 0.711 |
| Zinc | 5.77 | 2.41 |
| Ammonia | 527 | 232 |
| Fluoride | 235 | 105 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium surface treated | ||
| Chromium | 0.205 | 0.084 |
| Zinc | 0.681 | 0.285 |
| Ammonia | 62.1 | 27.3 |
| Fluoride | 27.8 | 12.3 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium surface treated | ||
| Chromium | 0.832 | 0.340 |
| Zinc | 2.76 | 1.16 |
| Ammonia | 252 | 111 |
| Fluoride | 113 | 49.9 |
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium sawed or ground | ||
| Chromium | 0.009 | 0.004 |
| Zinc | 0.029 | 0.012 |
| Ammonia | 2.60 | 1.15 |
| Fluoride | 1.16 | 0.515 |
(i) Degreasing spent solvents—subpart B—BAT.
There shall be no discharge of process wastewater pollutants.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of magnesium sanded and repaired or forged | ||
| Chromium | 0.273 | 0.112 |
| Zinc | 0.904 | 0.378 |
| Ammonia | 82.5 | 36.3 |
| Fluoride | 36.9 | 16.4 |
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