View all text of Subpart AA [§ 421.290 - § 421.297]
§ 421.296 - 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 secondary tin process wastewater introduced into a POTW shall not exceed the following values:
(a) Tin smelter SO
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of crude tapped tin produced | Arsenic | 12.790 | 5.703 | Lead | 2.575 | 1.196 | Iron | 11.040 | 5.611 | Tin | 3.495 | 2.024 |
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(b) Dealuminizing rinse.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of dealuminized scrap produced | Lead | 0.010 | 0.005 | Cyanide (total) | 0.007 | 0.003 | Fluoride | 1.225 | 0.697 | Tin | 0.013 | 0.008 |
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(c) Tin mud acid neutralization filtrate.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million of pounds) of neutralized dewatered tin mud produced | Lead | 1.413 | 0.656 | Cyanide (total) | 1.009 | 0.404 | Fluoride | 176.600 | 100.400 | Tin | 1.918 | 1.110 |
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(d) Tin hydroxide wash.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tin hydroxide washed | Lead | 3.347 | 1.554 | Cyanide (total) | 2.391 | 0.956 | Fluoride | 418.400 | 237.900 | Tin | 4.542 | 2.630 |
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(e) Spent electrowinning solution from new scrap.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of cathode tin produced | Lead | 4.704 | 2.184 | Cyanide (total) | 3.360 | 1.344 | Fluoride | 588.000 | 334.300 | Tin | 6.384 | 3.696 |
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(f) Spent electrowinning solution from municipal solid waste.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of MSW scrap used as raw material | Lead | 0.033 | 0.015 | Cyanide (total) | 0.024 | 0.010 | Fluoride | 4.165 | 2.368 | Tin | 0.045 | 0.026 |
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(g) Tin hydroxide supernatant from scrap.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tin metal recovered from scrap | Lead | 15.580 | 7.233 | Cyanide (total) | 11.130 | 4.451 | Fluoride | 1,947.000 | 1,107.000 | Tin | 21.140 | 12.240 |
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(h) Tin hydroxide supernatant from plating solutions and ludges.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tin metal recovered from plating solutions and sludges | Lead | 32.20 | 14.95 | Cyanide (total) | 23.00 | 9.20 | Fluoride | 4,025.00 | 2,289.00 | Tin | 43.70 | 25.30 |
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(i) Tin hydroxide filtrate.
PSNS for the Secondary Tin Subcategory
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kg (pounds per million pounds) of tin metal produced | Lead | 7.012 | 3.256 | Cyanide (total) | 5.009 | 2.004 | Fluoride | 876.500 | 498.400 | Tin | 9.517 | 5.510 |
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