Loading (50 kb)...'
(continued)
silver,
produced in
refinery
-------------------------
Copper........................................ 1.280 0.610
Cyanide (total)............................... 0.200 0.080
Zinc.......................................... 1.020 0.420
Combined metals............................... 0.300 ...........
Ammonia (as N)................................ 133.300 58.600
------------------------------------------------------------------------
(f) Gold solvent extraction raffinate and wash water.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
gold
produced by
solvent
extraction
-------------------------
Copper........................................ 0.806 0.384
Cyanide (total)............................... 0.126 0.050
Zinc.......................................... 0.643 0.265
Combined metals............................... 0.189 ...........
Ammonia (as N)................................ 83.980 36.920
------------------------------------------------------------------------
(g) Gold spent electrolyte.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
gold
produced by
electrolysi
s
-------------------------
Copper........................................ 0.011 0.005
Cyanide (total)............................... 0.002 0.001
Zinc.......................................... 0.009 0.004
Combined metals............................... 0.300 ...........
Ammonia (as N)................................ 1.160 0.510
------------------------------------------------------------------------
(h) Gold precipitation and filtration.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
gold
precipitate
d
-------------------------
Copper........................................ 5.632 2.684
Cyanide (total)............................... 0.880 0.352
Zinc.......................................... 4.488 1.848
Combined metals............................... 1.320 ...........
Ammonia (as N)................................ 586.500 257.800
------------------------------------------------------------------------
(i) Platinum precipitation and filtration.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
platinum
precipitate
d
-------------------------
Copper........................................ 6.656 3.172
Cyanide (total)............................... 1.040 0.416
Zinc.......................................... 5.304 2.184
Combined metals............................... 1.560 ...........
Ammonia (as N)................................ 693.200 304.700
------------------------------------------------------------------------
(j) Palladium precipitation and filtration.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
platinum
precipitate
d
-------------------------
Copper........................................ 7.680 3.660
Cyanide (Total)............................... 1.200 0.480
Zinc.......................................... 6.120 2.520
Combined Metals............................... 1.800 ...........
Ammonia (as N)................................ 799.800 351.600
------------------------------------------------------------------------
(k) Other platinum group metals precipitation and filtration.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
other
platinum
group
metals
precipitate
d
-------------------------
Copper........................................ 6.656 3.172
Cyanide (total)............................... 1.040 0.416
Zinc.......................................... 5.304 2.184
Combined metals............................... 1.560 ...........
Ammonia (as N)................................ 693.200 304.700
------------------------------------------------------------------------
(l) Spent solution from PGC salt production.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
gold
contained
in PGC
product
-------------------------
Copper........................................ 1.152 0.549
Cyanide (total)............................... 0.180 0.072
Zinc.......................................... 0.918 0.378
Combined metals............................... 0.270 ...........
Ammonia (as N)................................ 120.000 52.740
------------------------------------------------------------------------
(m) Equipment and floor wash.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
precious
metals,
including
silver,
produced in
refinery
-------------------------
Copper........................................ 0.000 0.000
Cyanide (total)............................... 0.000 0.000
Zinc.......................................... 0.000 0.000
Combined metals............................... 0.000 ...........
Ammonia (as N)................................ 0.000 0.000
------------------------------------------------------------------------
(n) Preliminary Treatment.
PSNS for the Secondary Precious Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day averge
------------------------------------------------------------------------
mg/troy
ounce of
total
precious
metals
produced
through
this
operation
-------------------------
Copper........................................ 64.000 30.500
Cyanide (Total)............................... 10.000 4.000
Zinc.......................................... 51.000 21.000
Combined Metals............................... 15.000 ...........
Ammonia (as N)................................ 6665.000 2930.000
------------------------------------------------------------------------
[50 FR 38365, Sept. 20, 1985, as amended at 55 FR 31711–31713, Aug. 3, 1990]
§ 421.267 [Reserved]
top
Subpart Y—Primary Rare Earth Metals Subcategory
top
Source: 50 FR 38371, Sept. 20, 1985, unless otherwise noted.
§ 421.270 Applicability: Description of the primary rare earth metals subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the production of rare earth metals and mischmetal by primary rare earth metals facilities processing rare earth metal oxides, chlorides, and fluorides.
§ 421.271 Specialized definitions.
top
In addition to what is provided below:
(a) The general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.
(b) The term rare earth metals refers to the elements scandium, yttrium, and lanthanum to lutetium, inclusive.
(c) The term mischmetal refers to a rare earth metal alloy comprised of the natural mixture of rare earths to about 94–99 percent. The balance of tha alloy includes traces of other elements and one to two percent iron.
§§ 421.272-421.273 [Reserved]
top
§ 421.274 Standards of performance for new sources.
top
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Dryer Vent Water Quench and Scrubber.
NSPS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
mischmetal
produced
from wet
rare earth
chlorides
-------------------------
Hexachlorobenzene............................. 0.042 0.042
Chromium (total).............................. 1.544 0.626
Lead.......................................... 1.168 0.542
Nickel........................................ 2.295 1.544
Total suspended solids........................ 62.600 50.080
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(b) Dryer vent caustic wet air pollution control.
NSPS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
mischmetal
produced
from wet
rare earth
chlorides
---------------------------
Hexachlorobenzene........................... 0.007 0.007
Chromium (total)............................ 0.272 0.110
Lead........................................ 0.206 0.095
Nickel...................................... 0.404 0.272
Total suspended solids...................... 11.010 8.808
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(c) Electrolytic cell water quench and scrubber.
NSPS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
---------------------------
Hexachlorobenzene........................... 0.094 0.094
Chromium (total)............................ 3.474 1.409
Lead........................................ 2.629 1.221
Nickel...................................... 5.165 3.474
Total suspended solids...................... 140.900 112.700
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(d) Electrolytic cell caustic wet air pollution control.
NSPS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
---------------------------
Hexachlorobenzene........................... 0.000 0.000
Chromium (total)............................ 0.000 0.000
Lead........................................ 0.000 0.000
Nickel...................................... 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.
(e) Sodium hypochlorite filter backwash.
NSPS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.004 0.004
Chromium (total).............................. 0.134 0.054
Lead.......................................... 0.101 0.047
Nickel........................................ 0.199 0.134
Total suspended solids........................ 5.430 4.334
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
§ 421.275 Pretreatment standards for existing sources.
top
Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources. The mass of wastewater pollutants in primary rare earth metals process wastewater introduced into a POTW must not exceed the following values:
(a) Dryer vent water quench scrubber.
PSES for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
mischmetal
produced
from wet
rare earth
chlorides
-------------------------
Hexachlorobenzene............................. 0.042 0.042
Chromium (total).............................. 1.544 0.626
Lead.......................................... 1.168 0.542
Nickel........................................ 2.295 1.544
------------------------------------------------------------------------
(b) Dryer Vent Caustic Wet Air Pollution Control.
PSES for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
mischmetal
produced
from wet
rare earth
chlorides
-------------------------
Hexachlorobenzene............................. 0.007 0.007
Chromium (total).............................. 0.272 0.110
Lead.......................................... 0.206 0.095
Nickel........................................ 0.404 0.272
------------------------------------------------------------------------
(c) Electrolytic cell water quench and scrubber.
PSES for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.094 0.094
Chromium (total).............................. 3.474 1.409
Lead.......................................... 2.629 1.221
Nickel........................................ 5.165 3.474
------------------------------------------------------------------------
(d) Electrolytic cell caustic wet air pollution control.
PSES for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.000 0.000
Chromium (total).............................. 0.000 0.000
Lead.......................................... 0.000 0.000
Nickel........................................ 0.000 0.000
------------------------------------------------------------------------
(e) Sodium hypochlorite filter backwash.
PSES for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.004 0.004
Chromium (total).............................. 0.134 0.054
Lead.......................................... 0.101 0.047
Nickel........................................ 0.199 0.134
------------------------------------------------------------------------
§ 421.276 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 rare earth metals process wastewater introduced into a POTW shall not exceed the following values:
(a) Dryer vent water quench and scrubber.
PSNS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
mischmetal
produced
from wet
rare earth
chlorides
-------------------------
Hexachlorobenzene............................. 0.042 0.042
Chromium (total).............................. 1.544 0.626
Lead.......................................... 1.168 0.542
Nickel........................................ 2.295 1.544
------------------------------------------------------------------------
(b) Dryer vent caustic wet air pollution control.
PSNS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
mischmetal
produced
from wet
rare earth
chlorides
-------------------------
Hexachlorobenzene............................. 0.007 0.007
Chromium (total).............................. 0.272 0.110
Lead.......................................... 0.206 0.095
Nickel........................................ 0.404 0.272
------------------------------------------------------------------------
(c) Electrolytic cell water quench and scrubber.
PSNS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.094 0.094
Chromium (total).............................. 3.474 1.409
Lead.......................................... 2.629 1.221
Nickel........................................ 5.165 3.474
------------------------------------------------------------------------
(d) Electrolytic cell caustic wet air pollution control.
PSNS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.000 0.000
Chromium (total).............................. 0.000 0.000
Lead.......................................... 0.000 0.000
Nickel........................................ 0.000 0.000
------------------------------------------------------------------------
(e) Sodium hypochlorite filter backwash.
PSNS for the Primary Rare Earth Metals Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
total
mischmetal
produced
-------------------------
Hexachlorobenzene............................. 0.004 0.004
Chromium (total).............................. 0.134 0.054
Lead.......................................... 0.101 0.047
Nickel........................................ 0.199 0.134
------------------------------------------------------------------------
§ 421.277 [Reserved]
top
Subpart Z—Secondary Tantalum Subcategory
top
Source: 50 FR 38374, Sept. 20, 1985, unless otherwise noted.
§ 421.280 Applicability: Description of the secondary tantalum subcategory.
top
The provisions of this subpart are applicable to discharges resulting from the production of tantalum at secondary tantalum facilities.
§ 421.281 Specialized definitions.
top
For the purpose of this subpart the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.
§ 421.282 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
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 practicable technology currently available:
(a) Tantalum alloy leach and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tantalum
powder
produced
---------------------------
Copper...................................... 438.100 230.600
Lead........................................ 96.850 46.120
Nickel...................................... 442.800 292.900
Zinc........................................ 336.700 140.700
Tantalum.................................... 103.800 ............
Total suspended solids...................... 9,455.000 4,497.000
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(b) Capacitor leach and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tantalum
powder
produced
from
leaching
-------------------------
Copper........................................ 38.380 20.200
Lead.......................................... 8.484 4.040
Nickel........................................ 38.780 25.650
Zinc.......................................... 29.490 12.320
Tantalum...................................... 9.090 ...........
Total suspended solids........................ 828.200 393.900
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(c) Tantalum sludge leach and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
equivalent
pure
tantalum
powder
produced
-------------------------
Copper........................................ 390.100 205.300
Lead.......................................... 86.230 41.060
Nickel........................................ 394.200 260.700
Zinc.......................................... 299.700 125.200
Tantalum...................................... 92.390 ...........
Total suspended solids........................ 8,417.000 4,003.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(d) Tantalum powder acid wash and rinse.
BPT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tantalum
powder
produced
-------------------------
Copper........................................ 0.665 0.350
Lead.......................................... 0.147 0.070
Nickel........................................ 0.672 0.445
Zinc.......................................... 0.511 0.214
Tantalum...................................... 0.158 ...........
Total suspended solids........................ 14.350 6.825
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(e) Leaching wet air pollution control.
BPT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
equivalent
pure
tantalum
powder
produced
-------------------------
Copper........................................ 9.272 4.880
Lead.......................................... 2.050 0.976
Nickel........................................ 9.370 6.198
Zinc.......................................... 7.125 2.977
Tantalum...................................... 2.196 ...........
Total suspended solids........................ 200.100 95.160
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
§ 421.283 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) Tantalum alloy leach and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tantalum
powder
produced
-------------------------
Copper........................................ 295.200 140.700
Lead.......................................... 64.570 29.980
Nickel........................................ 126.800 85.320
Zinc.......................................... 235.200 96.850
Tantalum...................................... 103.800 ...........
------------------------------------------------------------------------
(b) Capacitor leach and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tantalum
powder
produced
from
leaching
-------------------------
Copper........................................ 25.860 12.320
Lead.......................................... 5.656 2.626
Nickel........................................ 11.110 7.474
Zinc.......................................... 20.600 8.484
Tantalum...................................... 9.090 ...........
------------------------------------------------------------------------
(c) Tantalum sludge leach and rinse.
BAT Limitations for the Secondary Tantalum Subcategory
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------mg/kg (continued)