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40 CFR PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
1-40CFR421.txt - CFR - 5/16/2006 0:00:00 - Regulation - US

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BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of
photographi
c solutions
-------------------------
Copper........................................ 23.070 12.140
Zinc.......................................... 17.730 7.406
Ammonia (as N)................................ 1,618.000 711.400
Total suspended solids........................ 497.800 236.800
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(f) Subpart L—Electrolytic Refining.


BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
electrolyti
c refining
-------------------------
Copper........................................ 1.444 .760
Zinc.......................................... 1.110 .464
Ammonia (as N)................................ 101.300 44.540
Total suspended solids........................ 31.160 14.820
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(g) Subpart L—Furnace Wet Air Pollution Control.


BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
roasted,
smelted, or
dried
-------------------------
Copper........................................ 1.273 .670
Zinc.......................................... .978 .409
Ammonia (as N)................................ 89.310 39.260
Total suspended solids........................ 27.470 13.070
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(h) Subpart L—Leaching.


BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching
-------------------------
Copper........................................ .164 .086
Zinc.......................................... .126 .053
Ammonia (as N)................................ 11.470 5.040
Total suspended solids........................ 3.526 1.677
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.


BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching or
silver
precipitate
d
-------------------------
Copper........................................ 8.417 4.430
Zinc.......................................... 6.468 2.703
Ammonia (as N)................................ 590.500 259.600
Total suspended solids........................ 181.700 86.390
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(j) Subpart L—Precipitation and Filtration of Nonphotographic Solutions.


BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 5.833 3.070
Zinc.......................................... 4.482 1.873
Ammonia (as N)................................ 409.300 179.900
Total suspended solids........................ 125.900 59.870
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(k) Subpart L—Floor and Equipment Washdown.


BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
production
-------------------------
Copper........................................ .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


[49 FR 8821, Mar. 8, 1984, as amended at 49 FR 29795, July 24, 1984]

§ 421.123 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) Subpart L—Film Stripping.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
film
stripping
-------------------------
Copper........................................ 64.450 30.720
Zinc.......................................... 51.360 21.150
Ammonia (as N)................................ 6,712.000 2,951.000
------------------------------------------------------------------------


(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of film
stripping
solutions
-------------------------
Copper........................................ 1.242 .592
Zinc.......................................... .990 .408
Ammonia (as N)................................ 129.300 56.840
------------------------------------------------------------------------


(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 73.690 35.120
Zinc.......................................... 58.720 24.180
Ammonia (as N)................................ 7,674.000 3,374.000
------------------------------------------------------------------------


(d) Subpart L—Precipitation and Filtration of Photographic Solutions.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 34.048 16.226
Zinc.......................................... 27.132 11.172
Ammonia (as N)................................ 3,545.000 1,559.000
------------------------------------------------------------------------


(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of
photographi
c solutions
-------------------------
Copper........................................ 15.540 7.406
Zinc.......................................... 12.380 5.099
Ammonia (as N)................................ 1,618.000 711.400
------------------------------------------------------------------------


(f) Subpart L—Electrolytic Refining.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
electrolyti
c refining
-------------------------
Copper........................................ .973 .464
Zinc.......................................... .775 .319
Ammonia (as N)................................ 101.300 44.540
------------------------------------------------------------------------


(g) Subpart L—Furnace Wet Air Pollution Control.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
roasted,
smelted, or
dried
-------------------------
Copper........................................ .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .000 .000
------------------------------------------------------------------------


(h) Subpart L—Leaching.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching
-------------------------
Copper........................................ .110 .053
Zinc.......................................... .088 .036
Ammonia (as N)................................ 11.470 5.040
------------------------------------------------------------------------


(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching or
silver
precipitate
d
-------------------------
Copper........................................ 5.671 2.703
Zinc.......................................... 4.519 1.861
Ammonia (as N)................................ 590.500 259.600
------------------------------------------------------------------------


(j) Subpart L—Precipitation and Filtration of Nonphotographic Solutions.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 3.930 1.873
Zinc.......................................... 3.132 1.290
Ammonia (as N)................................ 409.300 179.900
------------------------------------------------------------------------


(k) Subpart L—Floor and Equipment Washdown.


BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
production
-------------------------
Copper........................................ .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .000 .000
------------------------------------------------------------------------


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

(a) Subpart L—Film Stripping.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
film
stripping
-------------------------
Copper........................................ 64.450 30.720
Zinc.......................................... 51.360 21.150
Ammonia (as N)................................ 6,712.000 2,951.000
Total suspended solids........................ 755.300 604.200
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of film
stripping
solutions
-------------------------
Copper........................................ 1.242 .592
Zinc.......................................... .990 .408
Ammonia (as N)................................ 129.300 56.840
Total suspended solids........................ 14.550 11.640
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 73.690 35.120
Zinc.......................................... 58.720 24.180
Ammonia (as N)................................ 7,674.000 3,374.000
Total suspended solids........................ 863.600 690.900
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(d) Subpart L—Precipitation and Filtration of Photographic Solutions.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 34.048 16.226
Zinc.......................................... 27.132 11.172
Ammonia (as N)................................ 3,545.000 1,559.000
Total suspended solids........................ 399.000 319.200
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of
photographi
c solutions
-------------------------
Copper........................................ 15.540 7.406
Zinc.......................................... 12.380 5.099
Ammonia (as N)................................ 1,618.000 711.400
Total suspended solids........................ 182.100 145.700
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(f) Subpart L—Electrolytic Refining.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
electrolyti
c refining
-------------------------
Copper........................................ .973 .464
Zinc.......................................... .775 .319
Ammonia (as N)................................ 101.300 44.540
Total suspended solids........................ 11.400 9.120
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(g) Subpart L—Furnace Wet Air Pollution Control.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
roasted,
smelted, or
dried
-------------------------
Copper........................................ .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(h) Subpart L—Leaching.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching
-------------------------
Copper........................................ .110 .053
Zinc.......................................... .088 .036
Ammonia (as N)................................ 11.470 5.040
Total suspended solids........................ 1.290 1.032
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching or
silver
precipitate
d
-------------------------
Copper........................................ 5.671 2.703
Zinc.......................................... 4.519 1.861
Ammonia (as N)................................ 590.500 259.600
Total suspended solids........................ 66.450 53.160
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(j) Subpart L—Precipitation and Filtration of Nonphotograhic Solutions.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 3.930 1.873
Zinc.......................................... 3.132 1.290
Ammonia (as N)................................ 409.300 179.900
Total suspended solids........................ 46.050 36.840
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


(k) Subpart L—Floor and Equipment Washdown.


NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
production
-------------------------
Copper........................................ .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.


[49 FR 8821, Mar. 8, 1984, as amended at 49 FR 29795, July 24, 1984]

§ 421.125 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 secondary silver process wastewater introduced into a POTW must not exceed the following values.

(a) Subpart L—Film Stripping.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
film
stripping
-------------------------
Copper........................................ 64.450 30.720
Zinc.......................................... 51.360 21.150
Ammonia (as N)................................ 6,712.000 2,951.000
------------------------------------------------------------------------


(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of film
stripping
solutions
-------------------------
Copper........................................ 1.242 .592
Zinc.......................................... .990 .408
Ammonia (as N)................................ 129.300 56.840
------------------------------------------------------------------------


(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 73.690 35.120
Zinc.......................................... 58.720 24.180
Ammonia (as N)................................ 7,674.000 3,374.000
------------------------------------------------------------------------


(d) Subpart L—Precipitation and Filtration of Photographic Solutions.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
precipitate
d
-------------------------
Copper........................................ 34.048 16.226
Zinc.......................................... 27.132 11.172
Ammonia (as N)................................ 3,545.000 1,559.000
------------------------------------------------------------------------


(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
precipitati
on and
filtration
of
photographi
c solutions
-------------------------
Copper........................................ 15.540 7.406
Zinc.......................................... 12.380 5.099
Ammonia (as N)................................ 1,618.000 711.400
------------------------------------------------------------------------


(f) Subpart L—Electrolytic Refining.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver from
electrolyti
c refining
-------------------------
Copper........................................ .973 .464
Zinc.......................................... .775 .319
Ammonia (as N)................................ 101.300 44.540
------------------------------------------------------------------------


(g) Subpart L—Furnace Wet Air Pollution Control.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
roasted,
smelted, or
dried
-------------------------
Copper........................................ .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .000 .000
------------------------------------------------------------------------


(h) Subpart L—Leaching.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/troy
ounce of
silver
produced
from
leaching
-------------------------
Copper........................................ .110 .053
Zinc.......................................... .088 .036
Ammonia (as N)................................ 11.470 5.040
------------------------------------------------------------------------


(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.


PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant propertyMaximum for monthly (continued)
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