Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:
(a) Tin smelter SO2 scrubber.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of crude
tapped tin metal
produced
--------------Arsenic....................................... 19.220 8.554Lead.......................................... 3.863 1.840Iron.......................................... 11.040 5.611Tin........................................... 3.495 2.024Total suspended solids........................ 377.100 179.400pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(b) Dealuminizing rinse.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
dealuminized scrap
produced
--------------Lead.......................................... 0.015 0.007Cyanide (total)............................... 0.010 0.004Fluoride...................................... 1.225 0.700Tin........................................... 0.013 0.008Total suspended solids........................ 1.435 0.683pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Tin mud acid neutralization filtrate.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Minimum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
neutralized, dewatered
tin mud produced
--------------Lead.......................................... 2.120 1.009Cyanide (total)............................... 1.464 0.606Fluoride...................................... 176.600 100.400Tin........................................... 1.918 1.110Total suspended solids........................ 206.900 98.420pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(d) Tin hydroxide wash.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Minimum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of tin
hydroxide washed
--------------Lead.......................................... 5.020 2.391Cyanide (total)............................... 3.466 1.434Fluoride...................................... 418.400 237.900Tin........................................... 4.542 2.630Total suspended solids........................ 490.100 233.100pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(e) Spent electrowinning solution from new scrap.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Minimum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cathode tin produced
--------------Lead.......................................... 7.056 3.360Cyanide (total)............................... 4.872 2.016Fluoride...................................... 588.000 334.300Tin........................................... 6.384 3.696Total suspended solids........................ 688.800 327.600pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(f) Spent electrowinning solution from municipal solid waste.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Minimum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of MSW
scrap used as raw
material
--------------Lead.......................................... 0.050 0.024Cyanide (total)............................... 0.035 0.014Fluoride...................................... 4.165 2.368Tin........................................... 0.045 0.026Total suspended solids........................ 4.879 2.321pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(g) Tin hydroxide supernatant from scrap.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of tin
metal recovered from
scrap
--------------Lead.......................................... 23.370 11.130Cyanide (total)............................... 16.140 6.677Fluoride...................................... 1,947.000 1,107.000Tin........................................... 21.140 12.240Total suspended solids........................ 2,281.000 1,085.000pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(h) Tin hydroxide supernatant from plating solutions and sludges.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of tin
metal recovered from
plating solutions and
sludges
--------------Lead.......................................... 48.30 23.00Cyanide (total)............................... 33.35 13.80Fluoride...................................... 4,025.00 2,289.00Tin........................................... 43.70 25.30Total suspended solids........................ 4,715.00 2,243.00pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(i) Tin hydroxide filtrate.
BPT Limitations for the Secondary Tin Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of tin
metal produced
--------------Lead.......................................... 10.520 5.009Cyanide (total)............................... 7.263 3.005Fluoride...................................... 876.500 498.400Tin........................................... 9.517 5.510Total suspended solids........................ 1,027.000 488.400pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.