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) Sand drying wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 0.250 0.102Cyanide (total)............................... 0.165 0.068Lead.......................................... 0.239 0.114Nickel........................................ 1.091 0.721Ammonia (as N)................................ 75.710 33.280Total suspended solids........................ 23.290 11.080pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(b) Sand chlorination off-gas wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zironium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 19.130 7.825Cyanide (total)............................... 12.610 5.216Lead.......................................... 18.260 8.694Nickel........................................ 83.460 55.210Ammonia (as N)................................ 5,795.000 2,547.000Total suspended solids........................ 1,782.000 847.700pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Sand chlorination area-vent wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 3.751 1.534Cyanide (total)............................... 2.472 1.023Lead.......................................... 3.580 1.705Nickel........................................ 16.370 10.830Ammonia (as N)................................ 1,136.000 449.500Total suspended solids........................ 349.500 166.200pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(d) SiCl4 purification wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 3.299 1.350Cyanide (total)............................... 2.174 0.900Lead.......................................... 3.149 1.500Nickel........................................ 14.400 9.522Ammonia (as N)................................ 999.500 439.400Total suspended solids........................ 307.400 146.200pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(e) Feed makeup wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 2.501 1.023Cyanide (total)............................... 1.648 0.682Lead.......................................... 2.387 1.137Nickel........................................ 10.910 7.217Ammonia (as N)................................ 757.500 333.000Total suspended solids........................ 233.000 110.800pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(f) Iron extraction (MIBK) steam stripper bottoms.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 0.987 0.404Cyanide (total)............................... 0.651 0.269Lead.......................................... 0.942 0.449Nickel........................................ 4.308 2.850Ammonia (as N)................................ 299.100 131.500Total suspended solids........................ 92.000 43.760pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(g) Zirconium filtrate.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 17.070 6.982Cyanide (total)............................... 11.250 4.655Lead.......................................... 16.290 7.758Nickel........................................ 74.480 49.260Ammonia (as N)................................ 5,171.000 2,273.000Total suspended solids........................ 1,590.000 756.400pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(h) Hafnium filtrate.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 0.000 0.000Cyanide (total)............................... 0.000 0.000Lead.......................................... 0.000 0.000Nickel........................................ 0.000 0.000Ammonia (as N)................................ 0.000 0.000Total suspended solids........................ 0.000 0.000pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(i) Calcining caustic wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium dioxide and
hafnium dioxide produced
--------------Chromium (total).............................. 3.959 1.619Cyanide (total)............................... 2.609 1.080Lead.......................................... 3.779 1.799Nickel........................................ 17.270 11.430Ammonia (as N)................................ 1,199.000 527.200Total suspended solids........................ 368.900 175.400pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(j) Pure chlorination wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium and hafnium
produced
--------------Chromium (total).............................. 16.860 6.897Cyanide (total)............................... 11.110 4.598Lead.......................................... 16.090 7.663Nickel........................................ 73.570 48.660Ammonia (as N)................................ 5,108.000 2,245.000Total suspended solids........................ 1,571.000 747.200pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(k) Reduction area-vent wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium and hafnium
produced
--------------Chromium (total).............................. 1.622 0.663Cyanide (total)............................... 1.069 0.442Lead.......................................... 1.548 0.737Nickel........................................ 7.077 4.681Ammonia (as N)................................ 491.300 216.000Total suspended solids........................ 151.100 71.880pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(l) Magnesium recovery off-gas wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium and hafnium
produced
--------------Chromium (total).............................. 9.123 3.732Cyanide (total)............................... 6.013 2.488Lead.......................................... 8.708 4.147Nickel........................................ 39.810 26.330Ammonia (as N)................................ 2,764.000 1,215.000Total suspended solids........................ 850.100 404.300pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(m) Magnesium recovery area-vent wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium and hafnium
produced
--------------Chromium (total).............................. 5.068 2.073Cyanide (total)............................... 3.340 1.382Lead.......................................... 4.838 2.304Nickel........................................ 22.110 14.630Ammonia (as N)................................ 1,535.000 675.000Total suspended solids........................ 472.200 224.600pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0. .
(n) Zirconium chip crushing wet air pollution control.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium and hafnium
produced
--------------Chromium (total).............................. 0.000 0.000Cyanide (total)............................... 0.000 0.000Lead.......................................... 0.000 0.000Nickel........................................ 0.000 0.000Ammonia (as N)................................ 0.000 0.000Total suspended solids........................ 0.000 0.000pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(o) Acid leachate from zirconium metal production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of pure
zirconium produced
--------------Chromium (total).............................. 12.970 5.304Cyanide (total-............................... 8.545 3.536Lead.......................................... 12.380 5.893Nickel........................................ 56.570 37.420Ammonia (as N)................................ 3,928.000 1,727.000Total suspended solids........................ 1,208.000 574.600pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(p) Acid leachate from zirconium alloy production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium contained in
alloys produced
--------------Chromium (total).............................. 6.939 2.839Cyanide (total)............................... 4.574 1.893Lead.......................................... 6.624 3.154Nickel........................................ 30.280 20.030Ammonia (as N)................................ 2,102.000 924.200Total suspended solids........................ 646.600 307.600pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(q) Leaching rinse water from zirconium metal production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium produced
--------------Chromium (total).............................. 25.930 10.610Cyanide (total)............................... 17.090 7.072Lead.......................................... 24.750 11.790Nickel........................................ 113.200 74.840Ammonia (as N)................................ 7,856.000 3,453.000Total suspended solids........................ 2,416.000 1,149.000pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0.
(r) Leaching rinse water from zirconium alloy production.
BPT Limitations for the Primary Zirconium and Hafnium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
zirconium in alloys
produced
--------------Chromium (total).............................. 0.347 0.142Cyanide (total)............................... 0.229 0.095Lead.......................................... 0.331 0.158Nickel........................................ 1.515 1.002Ammonia (as N)................................ 105.200 46.240Total suspended solids........................ 32.350 15.390pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.