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) Metal powder production atomization wastewater.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) of powder wet atomized
|
| Copper | 9.58 | 5.04
|
| Cyanide | 1.46 | 0.605
|
| Lead | 2.12 | 1.01 |
(b) Sizing spent emulsions.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) or powder sized
|
| Copper | 0.028 | 0.015
|
| Cyanide | 0.004 | 0.002
|
| Lead | 0.006 | 0.003 |
(c) Oil-resin impregnation wastewater—subpart J—BAT. There shall be no discharge of process wastewater pollutants.
(d) Steam treatment wet air pollution control scrubber blowdown.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) of powder metallurgy parts steam treated
|
| Copper | 1.51 | 0.792
|
| Cyanide | 0.230 | 0.095
|
| Lead | 0.333 | 0.159 |
(e) Tumbling, burnishing and cleaning wastewater.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) or powder metallurgy parts tumbled, burnished, or cleaned
|
| Copper | 8.36 | 4.40
|
| Cyanide | 1.28 | 0.528
|
| Lead | 1.850 | 0.880 |
(f) Sawing or grinding spent neat oils—subpart J—BAT. There shall be no discharge of process wastewater pollutants.
(g) Sawing or grinding spent emulsions.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with emulsions
|
| Copper | 0.0035 | 0.018
|
| Cyanide | 0.005 | 0.002
|
| Lead | 0.008 | 0.004 |
(h) Sawing or grinding contact cooling water.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) of powder sawed or ground with contact cooling
|
| Copper | 3.08 | 1.62
|
| Cyanide | 0.470 | 0.195
|
| Lead | 0.681 | 0.324 |
(i) Hot pressing contact cooling water.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) of powder cooled after pressing
|
| Copper | 16.7 | 8.80
|
| Cyanide | 2.55 | 1.06
|
| Lead | 3.70 | 1.760 |
(j) Mixing wet air pollution control scrubber blowdown.
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| | mg/off-kg (pounds per million off-pounds) of powder mixed
|
| Copper | 15.0 | 7.90
|
| Cyanide | 2.29 | 0.948
|
| Lead | 3.32 | 1.58 |
(k) Degreasing spent solvents—subpart J—BAT. There shall be no discharge of process wastewater pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986]
authority: Secs. 301, 304(b), (c), (e), and (g), 306(b) and (c), 307, 308, and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972 as amended by the Clean Water Act of 1977) (the “Act”);
33 U.S.C. 1311,
1314,
c,
e,
and, 1316(b) and
c,
and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217
source: 50 FR 34270, Aug. 23, 1985, unless otherwise noted.
cite as: 40 CFR 471.102