Loading (50 kb)...'
(continued)
alkaline
cleaned
---------------------------
Antimony.................................... 0.678 0.302
Lead........................................ 0.099 0.047
------------------------------------------------------------------------
(n) Swaging spent emulsions.
Subpart A_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
lead-tin-
bismuth
swaged with
emulsion
---------------------------
Antimony.................................... 0.005 0.003
Lead........................................ 0.0008 0.0004
------------------------------------------------------------------------
(o) Degreasing spent solvents—Subpart A—PSNS. There shall be no discharge of process wastewater pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2884, Jan. 22, 1986]
§ 471.16 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). [Reserved]
top
Subpart B—Magnesium Forming Subcategory
top
§ 471.20 Applicability; description of the magnesium forming subcategory.
top
This subpart applies to discharges of pollutants to waters of the United States, and introductions of pollutants into publicly owned treatment works from the process operations of the magnesium forming subcategory.
§ 471.21 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
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 for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
(a) Rolling spent emulsions.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
rolled with
emulsions
---------------------------
Chromiun.................................... 0.033 0.014
Zinc........................................ 0.109 0.046
Ammonia..................................... 9.95 4.37
Fluoride.................................... 4.440 1.97
Oil and grease.............................. 1.49 0.895
TSS......................................... 3.06 1.46
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(b) Forging spent lubricants—Subpart B—BPT. There shall be no discharge of process wastewater pollutants.
(c) Forging contact cooling water.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
forged
magnesium
cooled with
water
---------------------------
Chromium.................................... 1.27 0.520
Zinc........................................ 4.22 1.77
Ammonia..................................... 385 170
Fluoride.................................... 172 76.3
Oil and grease.............................. 57.8 34.7
TSS......................................... 119 56.4
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(d) Forging equipment cleaning wastewater.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
forged
-------------------------
Chromium...................................... 0.018 0.007
Zinc.......................................... 0.059 0.025
Ammonia....................................... 5.32 2.34
Fluoride...................................... 2.38 1.06
Oil and grease................................ 0.798 0.479
TSS........................................... 1.64 0.778
pH............................................ ........... (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(e) Direct chill casting contact cooling water.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
cast with
direct chill
methods
---------------------------
Chromium.................................... 1.74 0.711
Zinc........................................ 5.77 2.41
Ammonia..................................... 527 232
Fluoride.................................... 235 105
Oil and grease.............................. 79.0 47.4
TSS......................................... 162 77.1
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(f) Surface treatment spent baths.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromium.................................... 0.205 0.084
Zinc........................................ 0.681 0.285
Ammonia..................................... 62.1 27.3
Fluoride.................................... 27.8 12.3
Oil and grease.............................. 9.32 5.59
TSS......................................... 19.1 9.09
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(g) Surface treatment rinse.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromium.................................... 8.32 3.4
Zinc........................................ 27.6 11.5
Ammonia..................................... 2520 1110
Fluoride.................................... 1130 499
Oil and grease.............................. 378 227
TSS......................................... 775 369
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(h) Sawing or grinding spent emulsions.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sawed or
ground
---------------------------
Chromium.................................... 0.009 0.004
Zinc........................................ 0.029 0.012
Ammonia..................................... 2.60 1.15
Fluoride.................................... 1.16 0.515
Oil and grease.............................. 0.390 0.234
TSS......................................... 0.800 0.381
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(i) Degreasing spent solvents—Subpart B—BPT. There shall be no discharge of process wastewater pollutants.
(j) Wet air pollution control scrubber blowdown.
Subpart B_BPT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sanded and
repaired or
forged
---------------------------
Chromium.................................... 0.273 0.112
Zinc........................................ 0.904 0.378
Ammonia..................................... 82.5 36.3
Fluoride.................................... 36.9 16.4
Oil and grease.............................. 12.4 7.43
TSS......................................... 25.4 12.1
pH.......................................... ............ (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
§ 471.22 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 emulsions.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
rolled with
emulsions
---------------------------
Chromium.................................... 0.033 0.014
Zinc........................................ 0.109 0.046
Ammonia..................................... 9.95 4.37
Fluoride.................................... 4.44 1.97
------------------------------------------------------------------------
(b) Forging spent lubricants—Subpart B—BAT. There shall be no discharge of process wastewater pollutants.
(c) Forging contact cooling water.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
forged
magnesium
cooled with
water
---------------------------
Chromium.................................... 0.127 0.052
Zinc........................................ 0.422 0.177
Ammonia..................................... 38.5 17.0
Fluoride.................................... 17.2 7.63
------------------------------------------------------------------------
(d) Forging equipment cleaning wastewater.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
forged
--------------------------
Chromium..................................... 0.002 0.0007
Zinc......................................... 0.006 0.003
Ammonia...................................... 0.532 0.234
Fluoride..................................... 0.238 0.106
------------------------------------------------------------------------
(e) Direct chill casting contact cooling water.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
cast with
direct chill
methods
---------------------------
Chromium.................................... 1.74 0.711
Zinc........................................ 5.77 2.41
Ammonia..................................... 527 232
Fluoride.................................... 235 105
------------------------------------------------------------------------
(f) Surface treatment spent baths.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromium.................................... 0.205 0.084
Zinc........................................ 0.681 0.285
Ammonia..................................... 62.1 27.3
Fluoride.................................... 27.8 12.3
------------------------------------------------------------------------
(g) Surface treatment rinse.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromium.................................... 0.832 0.340
Zinc........................................ 2.76 1.16
Ammonia..................................... 252 111
Fluoride.................................... 113 49.9
------------------------------------------------------------------------
(h) Sawing or grinding spent emulsions.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sawed or
ground
---------------------------
Chromium.................................... 0.009 0.004
Zinc........................................ 0.029 0.012
Ammonia..................................... 2.60 1.15
Fluoride.................................... 1.16 0.515
------------------------------------------------------------------------
(i) Degreasing spent solvents—Subpart B—BAT. There shall be no discharge of process wastewater pollutants.
(j) Wet air pollution control scrubber blowdown.
Subpart B_BAT
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sanded and
repaired or
forged
---------------------------
Chromium.................................... 0.273 0.112
Zinc........................................ 0.904 0.378
Ammonia..................................... 82.5 36.3
Fluoride.................................... 36.9 16.4
------------------------------------------------------------------------
§ 471.23 New source performance standards (NSPS).
top
Any new source subject to this subpart must achieve the following new source performance standards. The mass of pollutants in the magnesium forming process wastewater shall not exceed the following values:
(a) Rolling spent emulsions.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg
(pounds per
million off-
pounds) of
magnesium
rolled with
emulsions
---------------------------
Chromium.................................... 0.028 0.011
Zinc........................................ 0.076 0.032
Ammonia..................................... 9.95 4.37
Fluoride.................................... 4.44 1.97
Oil and grease.............................. 0.746 0.746
TSS......................................... 1.12 0.895
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(b) Forging spent lubricants—Subpart B—NSPS. There shall be no discharge of process wastewater pollutants.
(c) Forging contact cooling water.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg
(pounds per
million off-
pounds) of
forged
magnesium
cooled with
water
---------------------------
Chromium.................................... 0.107 0.044
Zinc........................................ 0.295 0.122
Ammonia..................................... 38.5 17.0
Fluoride.................................... 17.2 7.63
Oil and grease.............................. 2.89 2.89
TSS......................................... 4.34 3.47
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(d) Forging equipment cleaning wastewater.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off/kg
(pounds per
million off-
pounds) of
magnesium
forged
----------------------------
Chromium................................... 0.002 0.0006
Zinc....................................... 0.004 0.002
Ammonia.................................... 0.532 0.234
Fluoride................................... 0.238 0.106
Oil and grease............................. 0.040 0.040
TSS........................................ 0.060 0.048
pH......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(e) Direct chill casting contact cooling water.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
cast with
direct chill
methods
---------------------------
Chromium.................................... 1.46 0.593
Zinc........................................ 4.03 1.66
Ammonia..................................... 527 232
Fluoride.................................... 235 105
Oil and grease.............................. 39.5 39.5
TSS......................................... 59.3 47.4
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(f) Surface treatment spent baths.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromium.................................... 0.173 0.070
Zinc........................................ 0.476 0.196
Ammonia..................................... 62.1 27.3
Fluoride.................................... 27.8 12.3
Oil and grease.............................. 4.66 4.66
TSS......................................... 6.99 5.60
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times
(g) Surface treatment rinse.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pound pers
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromium.................................... 0.700 0.284
Zinc........................................ 1.93 0.794
Ammonia..................................... 252 111
Fluoride.................................... 113 49
Oil and grease.............................. 18.9 18.9
TSS......................................... 28.4 22.7
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times
(h) Sawing or grinding spent emulsions.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sawed or
ground
---------------------------
Chromium.................................... 0.007 0.003
Zinc........................................ 0.020 0.008
Ammonia..................................... 2.60 1.15
Fluoride.................................... 1.16 0.515
Oil and grease.............................. 0.195 0.195
TSS......................................... 0.293 0.234
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
(i) Degreasing spent Solvents—Subpart B—NSPS. There shall be no discharge of process wastewater pollutants.
(j) Wet air pollution control scrubber blowdown.
Subpart B_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sanded and
repaired or
forged
---------------------------
Chromium.................................... 0.229 0.093
Zinc........................................ 0.632 0.260
Ammonia..................................... 82.5 36.3
Fluoride.................................... 36.9 16.4
Oil and grease.............................. 6.19 6.19
TSS......................................... 9.29 7.43
pH.......................................... (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.5 to 10.0 at all times.
[50 FR 34270, Aug. 23, 1985; 51 FR 2884, Jan. 22, 1986]
§ 471.24 Pretreatment standards for existing sources (PSES).
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 by August 23, 1988 achieve the following pretreatment standards for existing sources (PSES). The mass of wastewater pollutants in magnesium forming process wastewater introduced into a POTW shall not exceed the following values:
(a) Rolling spent emulsions.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
rolled with
emulsions
---------------------------
Chromium.................................... 0.033 0.014
Zinc........................................ 0.109 0.046
Ammonia..................................... 9.95 4.37
Fluoride.................................... 4.44 1.97
------------------------------------------------------------------------
(b) Forging spent lubricants—Subpart B—PSE. There shall be no discharge of process wastewater pollutants.
(c) Forging contact cooling water.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
cooled with
water
---------------------------
Chromium.................................... 0.127 0.052
Zinc........................................ 0.422 0.177
Ammonia..................................... 38.5 17.0
Fluoride.................................... 17.2 7.63
------------------------------------------------------------------------
(d) Forging equipment cleaning wastewater.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
forged
--------------------------
Chromium..................................... 0.002 0.0007
Zinc......................................... 0.006 0.003
Ammonia...................................... 0.532 0.234
Fluoride..................................... 0.238 0.106
------------------------------------------------------------------------
(e) Direct chill casting contact cooling water.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
cast with
direct chill
methods
---------------------------
Chromiun.................................... 1.74 0.711
Zinc........................................ 5.77 2.41
Ammonia..................................... 527 232
Fluoride.................................... 235 105
------------------------------------------------------------------------
(f) Surface treatment spent baths.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromiun.................................... 0.205 0.084
Zinc........................................ 0.681 0.285
Ammonia..................................... 62.1 27.3
Fluoride.................................... 27.8 12.3
------------------------------------------------------------------------
(g) Surface treatment rinse.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
surface
treated
---------------------------
Chromiun.................................... 0.832 0.340
Zinc........................................ 2.76 1.16
Ammonia..................................... 252 111
Fluoride.................................... 113 49.9
------------------------------------------------------------------------
(h) Sawing or grinding spent emulsions.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesium
sawed or
ground
---------------------------
Chromiun.................................... 0.009 0.004
Zinc........................................ 0.029 0.012
Ammonia..................................... 2.60 1.15
Fluoride.................................... 1.16 0.515
------------------------------------------------------------------------
(i) Degreasing Spent Solvents—Subpart B—PSES. There shall be no discharge of process wastewater pollutants.
(j) Wet air pollution control scrubber blowdown.
Subpart B_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/off-kg
(pounds per
million off-
pounds) of
magnesiumsanded and (continued)