CCLME.ORG - 40 CFR PART 471—NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY

(continued)
mg/off-kg
(pounds per
million off-
pounds) of
extruded
precious
metals heat
treated
---------------------------
Cadmium..................................... 1.42 0.626
Copper...................................... 7.93 4.17
Cyanide..................................... 1.21 0.501
Silver...................................... 1.71 0.709
Oil and grease.............................. 83.4 50.1
TSS......................................... 171 81.3
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(h) Semi-continuous or continuous casting contact cooling water.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals cast
by the semi-
continuous
or
continuous
method
---------------------------
Cadmium..................................... 3.50 1.55
Copper...................................... 19.6 10.3
Cyanide..................................... 2.99 1.24
Silver...................................... 4.23 1.75
Oil and grease.............................. 206 124
TSS......................................... 423 209
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(i) Stationary casting contact cooling water—Subpart D—BPT. There shall be no discharge of process wastewater pollutants.

(j) Direct chill casting contact cooling water.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals cast
by the
direct chill
method
---------------------------
Cadmium..................................... 3.67 1.62
Copper...................................... 20.5 10.8
Cyanide..................................... 3.13 1.30
Silver...................................... 4.43 1.84
Oil and grease.............................. 216 130
TSS......................................... 443 211
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(k) Shot casting contact cooling water.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals shot
cast
---------------------------
Cadmium..................................... 1.25 0.551
Copper...................................... 6.98 3.67
Cyanide..................................... 1.07 0.441
Silver...................................... 1.51 0.624
Oil and grease.............................. 73.4 44.1
TSS......................................... 151 71.6
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(l) Wet air pollution control scrubber blowdown—Subpart D—BPT. There shall be no discharge of process wastewater pollutants.

(m) Pressure bonding contact cooling water.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals and
base metal
pressure
bonded
---------------------------
Cadmium..................................... 0.029 0.013
Copper...................................... 0.159 0.084
Cyanide..................................... 0.024 0.010
Silver...................................... 0.034 0.014
Oil and grease.............................. 1.67 1.00
TSS......................................... 3.43 1.63
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(n) Surface treatment spent baths.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
surface
treated
---------------------------
Cadmium..................................... 0.033 0.015
Copper...................................... 0.183 0.097
Cyanide..................................... 0.028 0.012
Silver...................................... 0.040 0.017
Oil and grease.............................. 1.93 1.16
TSS......................................... 3.95 1.88
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(o) Surface treatment rinse.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
surface
treated
---------------------------
Cadmium..................................... 2.10 0.924
Copper...................................... 11.7 5.16
Cyanide..................................... 1.79 0.739
Silver...................................... 2.53 1.05
Oil and grease.............................. 123 73.9
TSS......................................... 253 120
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(p) Alkaline cleaning spent baths.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
alkaline
cleaned
--------------------------
Cadmium...................................... 0.021 0.009
Copper....................................... 0.114 0.060
Cyanide...................................... 0.018 0.007
Silver....................................... 0.025 0.010
Oil and grease............................... 1.20 0.720
TSS.......................................... 2.46 1.170
pH........................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(q) Alkaline cleaning rinse.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
alkaline
cleaned
---------------------------
Cadmium..................................... 3.81 1.68
Copper...................................... 21.3 11.2
Cyanide..................................... 3.25 1.35
Silver...................................... 4.59 1.91
Oil and grease.............................. 224 135
TSS......................................... 459 219
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(r) Alkaline cleaning prebonding wastewater.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals and
base metal
cleaned
prior to
bonding
---------------------------
Cadmium..................................... 3.95 1.74
Copper...................................... 22.1 11.6
Cyanide..................................... 3.37 1.39
Silver...................................... 4.76 1.97
Oil and grease.............................. 232 139
TSS......................................... 476 226
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(s) Tumbling or burnishing wastewater.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
tumbled or
burnished
---------------------------
Cadmium..................................... 4.12 1.82
Copper...................................... 23.0 12.1
Cyanide..................................... 3.51 1.45
Silver...................................... 4.96 2.06
Oil and grease.............................. 242 145
TSS......................................... 496 236
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(t) Sawing or grinding spent neat oils—Subpart D—BPT. There shall be no discharge of process wastewater pollutants.

(u) Sawing or grinding spent emulsions.

Subpart D_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals sawed
or ground
with
emulsions
---------------------------
Cadmium..................................... 0.032 0.014
Copper...................................... 0.178 0.094
Cyanide..................................... 0.027 0.011
Silver...................................... 0.039 0.016
Oil and grease.............................. 1.87 1.12
TSS......................................... 3.83 1.82
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(v) Degreasing spent solvents—Subpart D—BPT. There shall be no discharge of process wastewater pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]

§ 471.42 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
top
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT):

(a) Rolling spent neat oils—Subpart D—BAT. There shall be no discharge of wastewater pollutants.

(b) Rolling spent emulsions.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
rolled with
emulsions
--------------------------
Cadmium...................................... 0.026 0.012
Copper....................................... 0.147 0.077
Cyanide...................................... 0.023 0.010
Silver....................................... 0.032 0.013
------------------------------------------------------------------------

(c) Drawing spent neat oils—Subpart D—BAT. There shall be no discharge of process wastewater pollutants.

(d) Drawing spent emulsions.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
drawn with
emulsions
-------------------------
Cadmium....................................... 0.016 0.007
Copper........................................ 0.091 0.048
Cyanide....................................... 0.014 0.006
Silver........................................ 0.020 0.008
------------------------------------------------------------------------

(e) Drawing spent soap solutions.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals drawn
with soap
solutions
---------------------------
Cadmium..................................... 0.001 0.0005
Copper...................................... 0.006 0.003
Cyanide..................................... 0.0009 0.0004
Silver...................................... 0.002 0.0006
------------------------------------------------------------------------

(f) Metal powder production wet atomization wastewater.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
powder wet
atomized
---------------------------
Cadmium..................................... 2.27 1.00
Copper...................................... 12.7 6.68
Cyanide..................................... 1.94 0.802
Silver...................................... 2.74 1.14
------------------------------------------------------------------------

(g) Heat treatment contact cooling water.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals heat
treated
-------------------------
Cadmium....................................... 0.142 0.063
Copper........................................ 0.793 0.417
Cyanide....................................... 0.121 0.050
Silver........................................ 0.171 0.071
------------------------------------------------------------------------

(h) Semi-continuous and continuous casting contact cooling water.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals cast
by the semi-
continuous
or
continuous
method
---------------------------
Cadmium..................................... 0.350 0.155
Copper...................................... 1.96 1.03
Cyanide..................................... 0.299 0.124
Silver...................................... 0.423 0.175
------------------------------------------------------------------------

(i) Stationary casting contact cooling water—Subpart D—BAT. There shall be no discharge of process wastewater pollutants.

(j) Direct chill casting contact cooling water.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals cast
by the
direct chill
method
----------------------------
Cadmium.................................... 0.3676 0.162
Copper..................................... 2.05 1.08
Cyanide.................................... 0.313 0.130
Silver..................................... 0.443 0.184
------------------------------------------------------------------------

(k) Shot casting contact cooling water.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals shot
cast
-------------------------
Cadmium....................................... 0.125 0.055
Copper........................................ 0.698 0.367
Cyanide....................................... 0.107 0.044
Silver........................................ 0.151 0.063
------------------------------------------------------------------------

(l) Wet air pollution control scrubber blowdown—Subpart D—BAT. There shall be no discharge of process wastewater pollutants.

(m) Pressure bonding contact cooling water.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metal and
base metal
pressure
bonded
--------------------------
Cadmium...................................... 0.0297 0.013
Copper....................................... 0.159 0.084
Cyanide...................................... 0.0247 0.010
Silver....................................... 0.0342 0.014
------------------------------------------------------------------------

(n) Surface treatment spent baths.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
surface
treated
-------------------------
Cadmium....................................... 0.033 0.015
Copper........................................ 0.183 0.097
Cyanide....................................... 0.028 0.012
Silver........................................ 0.040 0.017
------------------------------------------------------------------------

(o) Surface treatment rinse.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
surface
treated
--------------------------
Cadmium...................................... 0.210 0.093
Copper....................................... 1.17 0.616
Cyanide...................................... 0.179 0.074
Silver....................................... 0.253 0.105
------------------------------------------------------------------------

(p) Alkaline cleaning spent baths.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
alkaline
cleaned
-------------------------
Cadmium....................................... 0.021 0.009
Copper........................................ 0.114 0.060
Cyanide....................................... 0.018 0.007
Silver........................................ 0.025 0.010
------------------------------------------------------------------------

(q) Alkaline cleaning rinse.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
alkaline
cleaned
---------------------------
Cadmium..................................... 0.381 0.168
Copper...................................... 2.13 1.12
Cyanide..................................... 0.325 0.135
Silver...................................... 0.459 0.191
------------------------------------------------------------------------

(r) Alkaline cleaning prebonding wastewater.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metal and
base metal
cleaned
prior to
bonding
--------------------------
Cadmium...................................... 0.400 0.174
Copper....................................... 2.210 1.16
Cyanide...................................... 0.337 0.139
Silver....................................... 0.476 0.197
------------------------------------------------------------------------

(s) Tumbling or burnishing wastewater.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
tumbled or
burnished
--------------------------
Cadmium...................................... 0.412 0.182
Copper....................................... 2.300 1.21
Cyanide...................................... 0.351 0.145
Silver....................................... 0.496 0.206
------------------------------------------------------------------------

(t) Sawing or grinding spent neat oils—Subpart D—BAT. There shall be no discharge of process wastewater pollutants.

(u) Sawing or grinding spent emulsions.

Subpart D_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals sawed
or ground
with
emulsions
--------------------------
Cadmium...................................... 0.0327 0.014
Copper....................................... 0.178 0.094
Cyanide...................................... 0.0277 0.011
Silver....................................... 0.0381 0.016
------------------------------------------------------------------------

(v) Degreasing spent solvents—Subpart D—BAT. There shall be no discharge of process wastewater pollutants.

[50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]

§ 471.43 New source performance standards (NSPS).
top
Any new source subject to this subpart must achieve the following new source performance standards (NSPS):

(a) Rolling Spent Neat Oils—Subpart D—NSPS. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

Subpart D_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
rolled with
emulsions
---------------------------
Cadmium..................................... 0.026 0.012
Copper...................................... 0.147 0.077
Cyanide..................................... 0.023 0.010
Silver...................................... 0.032 0.013
Oil and grease.............................. 1.54 0.925
TSS......................................... 3.16 1.51
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(c) Drawing spent neat oils—Subpart D—NSPS. There shall be no discharge of process wastewater pollutants.

(d) Drawing spent emulsions.

Subpart D_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals drawn
with
emulsions
---------------------------
Cadmium..................................... 0.017 0.007
Copper...................................... 0.091 0.048
Cyanide..................................... 0.014 0.006
Silver...................................... 0.020 0.008
Oil and grease.............................. 0.950 0.570
TSS......................................... 1.95 0.927
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(e) Drawing spent soap solutions.

Subpart D_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals drawn
with soap
solutions
---------------------------
Cadmium..................................... 0.001 0.0005
Copper...................................... 0.006 0.003
Cyanide..................................... 0.0009 0.0004
Silver...................................... 0.002 0.0006
Oil and grease.............................. 0.063 0.038
TSS......................................... 0.128 0.061
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(f) Metal powder production atomization wastewater.

Subpart D_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
precious
metals
powder wet
atomized
---------------------------
Cadmium..................................... 2.27 1.00
Copper...................................... 12.7 6.68
Cyanide..................................... 1.94 0.802
Silver...................................... 2.74 1.14
Oil and grease.............................. 134 80.2
TSS......................................... 274 131
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.

(g) Heat treatment contact cooling water.

Subpart D_NSPS
------------------------------------------------------------------------
Maximum for (continued)