Loading (50 kb)...'
(continued) -------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(f) Iron extraction (MIBK) steam stripper bottoms.
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).............................. 0.830 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
Total suspended solids........................ 33.660 26.930
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(g) Zirconium filtrate.
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).............................. 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 2,273.000
Total suspended solids........................ 581.900 465.500
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(h) Hafnium filtrate.
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).............................. 0.000 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.
(i) Calcining caustic 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).............................. 3.329 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
Total suspended solids........................ 135.000 108.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(j) Pure chlorination 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
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
Total suspended solids........................ 574.800 459.800
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(k) Reduction 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
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
Total suspended solids........................ 55.290 44.230
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.
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
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
Total suspended solids........................ 404.300 248.800
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.
NSPS 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
Total suspended solids........................ 172.800 138.200
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(n) Zirconium chip crushing west 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
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.
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
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
Total suspended solids........................ 442.000 353.600
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(p) Acid leachate from zirconium alloy production.
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
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)................................ 2,102.000 895.800
Total suspended solids........................ 236.600 189.300
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(q) Leaching rinse water from zirconium metal production.
NSPS 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
Total suspended solids........................ 884.000 707.200
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(r) Leaching rinse water from zirconium alloy production.
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
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
Total suspended solids........................ 11.840 9.468
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
§ 421.335 [Reserved]
top
§ 421.336 Pretreatment standards for new sources.
top
Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in primary zirconium and hafnium process wastewater introduced into a POTW shall not exceed the following values:
(a) Sand drying wet air pollution control.
PSNS 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.
PSNS 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)............................... 8.690 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.
PSNS 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.
PSNS 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.
PSNS 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.
PSNS 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).............................. 0.830 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.
PSNS 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........................................ 21.340 14.350
Ammonia (as N)................................ 5,171.000 2,273.000
------------------------------------------------------------------------
(h) Hafnium filtrate.
PSNS 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.
PSNS 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.
PSNS 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........................................ 21.007 14.180
Ammonia (as N)................................ 5,108.000 2,245,000
------------------------------------------------------------------------
(k) Reduction area-vent wet air pollution control.
PSNS 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).............................. 1.364 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.
PSNS 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.
PSNS 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)................................ 1,535,000 675.00
------------------------------------------------------------------------
(n) Zirconium chip crushing wet air pollution control.
PSNS 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.
PSNS 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 1,674.00
------------------------------------------------------------------------
(p) Acid leachate from zirconium alloy production.
PSNS 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)................................ 2,102.000 895.800
------------------------------------------------------------------------
(q) Leaching rinse water from zirconium metal production.
PSNS 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.
PSNS 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
------------------------------------------------------------------------
§ 421.337 [Reserved]