CCLME.ORG - 40 CFR PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY

(continued)
mg/kg
(pounds per
million
pounds) of
zirconium
and hafnium
produced
-------------------------
Chromium (total).............................. 16.860 6.897
Cyanide (total)............................... 11.110 4.598
Lead.......................................... 16.090 7.663
Nickel........................................ 73.570 48.660
Ammonia (as N)................................ 5,108.000 2,245.000
Total suspended solids........................ 1,571.000 747.200
pH............................................ (\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 0.663
Cyanide (total)............................... 1.069 0.442
Lead.......................................... 1.548 0.737
Nickel........................................ 7.077 4.681
Ammonia (as N)................................ 491.300 216.000
Total suspended solids........................ 151.100 71.880
pH............................................ (\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 3.732
Cyanide (total)............................... 6.013 2.488
Lead.......................................... 8.708 4.147
Nickel........................................ 39.810 26.330
Ammonia (as N)................................ 2,764.000 1,215.000
Total suspended solids........................ 850.100 404.300
pH............................................ (\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 2.073
Cyanide (total)............................... 3.340 1.382
Lead.......................................... 4.838 2.304
Nickel........................................ 22.110 14.630
Ammonia (as N)................................ 1,535.000 675.000
Total suspended solids........................ 472.200 224.600
pH............................................ (\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 0.000
Cyanide (total)............................... 0.000 0.000
Lead.......................................... 0.000 0.000
Nickel........................................ 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
Total suspended solids........................ 0.000 0.000
pH............................................ (\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 5.304
Cyanide (total-............................... 8.545 3.536
Lead.......................................... 12.380 5.893
Nickel........................................ 56.570 37.420
Ammonia (as N)................................ 3,928.000 1,727.000
Total suspended solids........................ 1,208.000 574.600
pH............................................ (\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 2.839
Cyanide (total)............................... 4.574 1.893
Lead.......................................... 6.624 3.154
Nickel........................................ 30.280 20.030
Ammonia (as N)................................ 2,102.000 924.200
Total suspended solids........................ 646.600 307.600
pH............................................ (\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 10.610
Cyanide (total)............................... 17.090 7.072
Lead.......................................... 24.750 11.790
Nickel........................................ 113.200 74.840
Ammonia (as N)................................ 7,856.000 3,453.000
Total suspended solids........................ 2,416.000 1,149.000
pH............................................ (\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 0.142
Cyanide (total)............................... 0.229 0.095
Lead.......................................... 0.331 0.158
Nickel........................................ 1.515 1.002
Ammonia (as N)................................ 105.200 46.240
Total suspended solids........................ 32.350 15.390
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

§ 421.333 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
top
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 available technology economically achievable:

(a) Sand drying wet air pollution control.

BAT 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).............................. 0.210 0.085
Cyanide (total)............................... 0.114 0.045
Lead.......................................... 0.159 0.074
Nickel........................................ 0.312 0.210
Ammonia (as N)................................ 75.710 33.280
------------------------------------------------------------------------

(b) Sand chlorination off-gas wet air pollution control.

BAT 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).............................. 16.080 6.521
Cyanide (total)............................... 8.694 3.478
Lead.......................................... 12.170 5.651
Nickel........................................ 23.910 16.080
Ammonia (as N)................................ 5,795.000 2,547.000
------------------------------------------------------------------------

(c) Sand chlorination area-vent wet air pollution control.

BAT 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).............................. 3.154 1.279
Cyanide (total)............................... 1.705 0.682
Lead.......................................... 2.387 1.108
Nickel........................................ 4.688 3.154
Ammonia (as N)................................ 1,136.000 499.500
------------------------------------------------------------------------

(d) SiCl4 purification wet air pollution control.

BAT 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).............................. 2.774 1.125
Cyanide (total)............................... 1.500 0.600
Lead.......................................... 2.099 0.975
Nickel........................................ 4.124 2.774
Ammonia (as N)................................ 999.500 439.400
------------------------------------------------------------------------

(e) Feed makeup wet air pollution control.

BAT 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).............................. 2.103 0.852
Cyanide (total)............................... 1.137 0.455
Lead.......................................... 1.591 0.739
Nickel........................................ 3.126 2.103
Ammonia (as N)................................ 757.500 333.000
------------------------------------------------------------------------

(f) Iron extraction (MIBK) steam stripper bottoms.

BAT Limitations for the Primary Zirconium 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).............................. 0.830 0.337
Cyanide (total)............................... 0.449 0.180
Lead.......................................... 0.628 0.292
Nickel........................................ 1.234 0.830
Ammonia (as N)................................ 299.100 131.500
------------------------------------------------------------------------

(g) Zirconium filtrate.

BAT 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).............................. 14.350 5.819
Cyanide (total)............................... 7.758 3.103
Lead.......................................... 10.860 5.043
Nickel........................................ 21.330 14.350
Ammonia (as N)................................ 5,171.000 2,273.00
------------------------------------------------------------------------

(h) Hafnium filtrate.

BAT 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 0.000
Cyanide (total)............................... 0.000 0.000
Lead.......................................... 0.000 0.000
Nickel........................................ 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
------------------------------------------------------------------------

(i) Calcining caustic wet air pollution control.

BAT 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).............................. 3.329 1.350
Cyanide (total)............................... 1.799 0.720
Lead.......................................... 2.519 1.170
Nickel........................................ 4.948 3.329
Ammonia (as N)................................ 1,199.000 527.200
------------------------------------------------------------------------

(j) Pure chlorination wet air pollution control.

BAT 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).............................. 14.180 5.748
Cyanide (total)............................... 7.663 3.065
Lead.......................................... 10.730 4.981
Nickel........................................ 21.070 14.180
Ammonia (as N)................................ 5,108.000 2,245.000
------------------------------------------------------------------------

(k) Reduction area-vent wet air pollution control.

BAT Limitations for the Primary Ziroconium 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).............................. 1.364 0.553
Cyanide (total)............................... 0.737 0.295
Lead.......................................... 1.032 0.479
Nickel........................................ 2.027 1.364
Ammonia (as N)................................ 491.300 216.000
------------------------------------------------------------------------

(l) Magnesium recovery off-gas wet air pollution control.

BAT 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).............................. 7.671 3.110
Cyanide (total)............................... 4.147 1.659
Lead.......................................... 5.805 2.695
Nickel........................................ 11.400 7.671
Ammonia (as N)................................ 2,764.000 1,215.000
------------------------------------------------------------------------

(m) Magnesium recovery area-vent wet air pollution control.

BAT 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).............................. 4.262 1.728
Cyanide (total)............................... 2.304 0.921
Lead.......................................... 3.225 1.497
Nickel........................................ 6.335 4.262
Ammonia (as N)................................ 1,535.000 675.000
------------------------------------------------------------------------

(n) Zirconium chip crushing wet air pollution control.

BAT 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 0.000
Cyanide (total)............................... 0.000 0.000
Lead.......................................... 0.000 0.000
Nickel........................................ 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
------------------------------------------------------------------------

(o) Acid leachate from zirconium metal production.

BAT 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).............................. 10.900 4.420
Cyanide (total)............................... 5.893 2.357
Lead.......................................... 8.250 3.831
Nickel........................................ 16.210 10.900
Ammonia (as N)................................ 3,928.000 1,674.000
------------------------------------------------------------------------

(p) Acid leachate from zirconium alloy production.

BAT 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).............................. 5.835 2.366
Cyanide (total)............................... 3.154 1.262
Lead.......................................... 4.416 2.050
Nickel........................................ 8.674 5.835
Ammonia (as N)................................ 2,102.000 895.000
------------------------------------------------------------------------

(q) Leaching rinse water from zirconium metal production.

BAT 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).............................. 21.810 8.840
Cyanide (total)............................... 11.790 4.715
Lead.......................................... 16.500 7.661
Nickel........................................ 32.410 21.810
Ammonia (as N)................................ 7,856.000 3,453.000
------------------------------------------------------------------------

(r) Leaching rinse water from zirconium alloy production.

BAT 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).............................. 0.292 0.118
Cyanide (total)............................... 0.158 0.063
Lead.......................................... 0.221 0.103
Nickel........................................ 0.434 0.292
Ammonia (as N)................................ 105.200 46.240
------------------------------------------------------------------------

§ 421.334 Standards of performance for new sources.
top
Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Sand drying wet air pollution control.

NSPS 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).............................. 0.210 0.085
Cyanide (total)............................... 0.114 0.045
Lead.......................................... 0.159 0.074
Nickel........................................ 0.312 0.210
Ammonia (as N)................................ 75.710 33.280
Total suspended solids........................ 8.520 6.816
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(b) Sand chlorination off-gas wet air pollution control.

NSPS 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).............................. 16.080 6.521
Cyanide (total)............................... 8.694 3.478
Lead.......................................... 12.170 5.651
Nickel........................................ 23.910 16.080
Ammonia (as N)................................ 5,795.000 2,547.000
Total suspended solids........................ 652.100 521.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(c) Sand chlorination area-vent wet air pollution control.

NSPS 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).............................. 3.154 1.279
Cyanide (total)............................... 1.705 0.682
Lead.......................................... 2.387 1.108
Nickel........................................ 4.688 3.154
Ammonia (as N)................................ 1,136.000 499.500
Total suspended solids........................ 127.900 102.300
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(d) SiC14 purification wet air pollution control.

NSPS 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).............................. 2.774 1.125
Cyanide (total)............................... 1.500 0.600
Lead.......................................... 2.099 0.975
Nickel........................................ 4.124 2.774
Ammonia (as N)................................ 999.500 439.400
Total suspended solids........................ 112.500 89.980
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(e) Feed makeup wet air pollution control.

NSPS 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).............................. 2.103 0.852
Cyanide (total)............................... 1.137 0.455
Lead.......................................... 1.591 0.739
Nickel........................................ 3.126 2.103
Ammonia (as N)................................ 757.500 333.000
Total suspended solids........................ 85.250 68.200
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------ (continued)