Pretreatment standards for existing sources.

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. The mass of wastewater pollutants in secondary tin process wastewater introduced into a POTW must not exceed the following values: (a) Tin smelter SO 2 scrubber. PSES 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 (b) Dealuminizing rinse. PSES 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 (c) Tin mud acid neutralization filtrate. PSES 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 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 (d) Tin hydroxide wash. PSES 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 (e) Spent electrowinning solution from new scrap. PSES 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 (f) Spent electrowinning solution from municipal solid waste. PSES 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 (g) Tin hydroxide supernatant from scrap. PSES 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 (h) Tin hydroxide supernatant from plating solutions and sludges. PSES 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 (i) Tin hydroxide filtrate. PSES 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