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) Tungsten detergent wash and rinse.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten scrap washed
--------------Copper........................................ 0.371 0.195Nickel........................................ 0.374 0.248Ammonia (as N)................................ 25.990 11.430Cobalt........................................ 0.768 0.337Tungsten...................................... 1.357 0.542Oil and grease................................ 3.900 2.340Total suspended solids........................ 7.995 3.803pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(b) Tungsten leaching acid.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten produced
--------------Copper........................................ 4.885 2.571Nickel........................................ 4.937 3.265Ammonia (as N)................................ 342.700 150.700Cobalt........................................ 10.130 4.448Tungsten...................................... 17.890 7.147Oil and grease................................ 51.420 30.850Total suspended solids........................ 105.400 50.140pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Tungsten post-leaching wash and rinse.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten produced
--------------Copper........................................ 9.772 5.143Nickel........................................ 9.875 6.532Ammonia (as N)................................ 685.600 301.400Cobalt........................................ 20.263 8.897Tungsten...................................... 35.800 14.300Oil and grease................................ 102.900 61.720Total suspended solids........................ 210.900 100.300pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(d) Synthetic scheelite filtrate.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
synthetic scheelite
produced
--------------Copper........................................ 31.660 16.660Nickel........................................ 31.990 21.160Ammonia (as N)................................ 2,221.000 976.300Cobalt........................................ 65.644 28.824Tungsten...................................... 116.000 46.320Oil and grease................................ 333.200 200.000Total suspended solids........................ 683.100 324.900pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(e) Tungsten carbide leaching wet air pollution control.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten carbide scrap
leached
--------------Copper........................................ 3.327 1.751Nickel........................................ 3.362 2.224Ammonia (as N)................................ 233.400 102.600Cobalt........................................ 6.899 3.029Tungsten...................................... 12.190 4.868Oil and grease................................ 35.020 21.010Total suspended solids........................ 71.790 34.150pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(f) Tungsten carbide wash water.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tungsten carbide
produced
--------------Copper........................................ 15.830 8.333Nickel........................................ 16.000 10.580Ammonia (as N)................................ 1,111.000 488.300Cobalt........................................ 32.832 14.416Tungsten...................................... 58.000 23.170Oil and grease................................ 166.700 100.000Total suspended solids........................ 341.700 162.500pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(g) Cobalt sludge leaching wet air pollution control.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced from
cobalt sludge
--------------Copper........................................ 67.990 35.780Nickel........................................ 68.700 45.440Ammonia (as N)................................ 4,770.000 2,097.000Cobalt........................................ 140.977 61.901Tungsten...................................... 249.000 99.470Oil and grease................................ 715.600 429.400Total suspended solids........................ 1,467.000 697.700pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(h) Crystallization decant.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced
--------------Copper........................................ 79.140 41.650Nickel........................................ 79.970 52.900Ammonia (as N)................................ 5,552.000 2,441.000Cobalt........................................ 164.101 72.055Tungsten...................................... 289.900 115.800Oil and grease................................ 833.000 499.800Total suspended solids........................ 1,708.000 812.200pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(i) Acid wash decant.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced
--------------Copper........................................ 36.220 19.060Nickel........................................ 36.600 24.210Ammonia (as N)................................ 2,541.000 1,117.000Cobalt........................................ 75.104 32.977Tungsten...................................... 132.700 52.990Oil and grease................................ 381.300 228.800Total suspended solids........................ 781.600 371.700pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(j) Cobalt hydroxide filtrate.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced
--------------Copper........................................ 107.600 56.650Nickel........................................ 108.800 71.940Ammonia (as N)................................ 7,551.000 3,320.000Cobalt........................................ 223.189 97.999Tungsten...................................... 394.300 157.500Oil and grease................................ 1,133.000 679.800Total suspended solids........................ 2,323.000 1,105.000pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(k) Cobalt hydroxide filter cake wash.
BPT Limitations for the Secondary Tungsten and Cobalt Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
cobalt produced
--------------Copper........................................ 207.200 109.100Nickel........................................ 209.400 138.500Ammonia (as N)................................ 14,530.000 6,389.000Cobalt........................................ 429.598 188.631Tungsten...................................... 758.900 303.100Oil and grease................................ 2,181.000 1,309.000Total suspended solids........................ 4,471.000 2,126.000pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times. [50 FR 38386, Sept. 20, 1985, as amended at 55 FR 31713, 31714, Aug. 3, 1990]