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Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 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) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4.
49 FR 8790, Mar. 8, 1984, unless otherwise noted.
50 FR 38357, Sept. 20, 1985, unless otherwise noted.
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50 FR 38357, Sept. 20, 1985, unless otherwise noted.
The provisions of this subpart are applicable to discharges resulting from the production of molybdenum or vanadium by secondary molybdenum and vanadium facilities.
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.
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) Leach tailings.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 40.778 | 18.145 |
| Chromium | 8.585 | 3.512 |
| Lead | 8.195 | 3.902 |
| Nickel | 37.460 | 24.779 |
| Iron | 23.410 | 11.902 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 8078.000 | 3551.000 |
| Total Suspended Solids | 799.950 | 380.460 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(b) Molybdenum filtrate solvent extraction raffinate.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 121.720 | 54.162 |
| Chromium | 25.625 | 10.483 |
| Lead | 24.460 | 11.648 |
| Nickel | 111.819 | 73.964 |
| Iron | 69.887 | 35.526 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 24114.000 | 10600.000 |
| Total Suspended Solids | 2387.800 | 1135.660 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(c) Vanadium decomposition wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of vanadium produced by decomposition | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 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. | ||
(d) Molybdenum drying wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of molybdenum produced | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 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) Pure Grade Molybdenum.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of pure molybdenum produced | ||
| Arsenic | 48.655 | 21.650 |
| Chromium | 10.243 | 4.190 |
| Lead | 9.778 | 4.656 |
| Nickel | 44.698 | 29.566 |
| Iron | 27.936 | 14.201 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 9638.000 | 4237.000 |
| Total Suspended Solids | 954.480 | 453.960 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
[50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31703, Aug. 3, 1990]
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) Leach Tailings.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 27.120 | 12.097 |
| Chromium | 7.219 | 2.927 |
| Lead | 5.463 | 2.536 |
| Nickel | 10.731 | 7.219 |
| Iron | 23.413 | 11.902 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 8078.000 | 3551.000 |
(b) Molybdenum filtrate solvent extraction raffinate.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 80.952 | 36.108 |
| Chronium | 21.548 | 8.736 |
| Lead | 16.306 | 7.571 |
| Nickel | 32.031 | 21.548 |
| Iron | 69.887 | 35.526 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 24114.000 | 10600.000 |
(c) Vanadium decomposition wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of vanadium produced by decomposition | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 0.000 | 0.000 |
(d) Molybdenum drying wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of molybdenum produced | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 0.000 | 0.000 |
(e) Pure Grade Molybdenum.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of pure molybdenum produced | ||
| Arsenic | 32.359 | 14.434 |
| Chromium | 8.614 | 3.492 |
| Lead | 6.518 | 3.026 |
| Nickel | 12.804 | 8.614 |
| Iron | 27.936 | 14.201 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 9638.000 | 4237.000 |
[50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31703, 31704, Aug. 3, 1990]
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Leach tailings.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 27.120 | 12.097 |
| Chromium | 7.219 | 2.927 |
| Lead | 5.463 | 2.536 |
| Nickel | 10.731 | 7.219 |
| Iron | 23.413 | 11.902 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 8078.000 | 3551.000 |
| Total Suspended Solids | 292.665 | 234.132 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(b) Molybdenum filtrate solvent extraction raffinate.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 80.952 | 36.108 |
| Chromium | 21.548 | 8.736 |
| Lead | 16.306 | 7.571 |
| Nickel | 32.031 | 21.548 |
| Iron | 69.887 | 35.526 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 24114.000 | 10600.000 |
| Total Suspended Solids | 873.585 | 698.868 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
(c) Vanadium decomposition wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of molybdenum and vanadium produced | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 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. | ||
(d) Molybdenum drying wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of molybdenum and vanadium produced | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 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) Pure Grade Molybdenum.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of pure molybdenum produced | ||
| Arsenic | 32.359 | 14.434 |
| Chromium | 8.614 | 3.492 |
| Lead | 6.518 | 3.026 |
| Nickel | 12.804 | 8.614 |
| Iron | 27.936 | 14.201 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 9638.000 | 4237.000 |
| Total Suspended Solids | 349.200 | 279.360 |
| pH | (1) | (1) |
| 1 Within the range of 7.5 to 10.0 at all times. | ||
[50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31704, Aug. 3, 1990]
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 secondary molybdenum and vanadium process wastewater introduced into a POTW shall not exceed the following values:
(a) Leach tailings.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 27.120 | 12.097 |
| Chromium | 7.219 | 2.927 |
| Lead | 5.463 | 2.536 |
| Nickel | 10.731 | 7.219 |
| Iron | 23.413 | 11.902 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 8078.000 | 3551.000 |
(b) Molybdenum filtrate solvent extraction raffinate.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced | ||
| Arsenic | 80.952 | 36.108 |
| Chromium | 21.548 | 8.736 |
| Lead | 16.306 | 7.571 |
| Nickel | 32.031 | 21.548 |
| Iron | 69.887 | 35.526 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 24114.000 | 10600.000 |
(c) Vanadium decomposition wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) vanadium produced by decomposition | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 0.000 | 0.000 |
(d) Molybdenum drying wet air pollution control.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of molybdenum produced | ||
| Arsenic | 0.000 | 0.000 |
| Chromium | 0.000 | 0.000 |
| Lead | 0.000 | 0.000 |
| Nickel | 0.000 | 0.000 |
| Iron | 0.000 | 0.000 |
| Molybdenum | 0.000 | 0.000 |
| Ammonia (as N) | 0.000 | 0.000 |
(e) Pure Grade Molybdenum.
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kg (pounds per million pounds) of pure molybdenum produced | ||
| Arsenic | 32.359 | 14.434 |
| Chromium | 8.614 | 3.492 |
| Lead | 6.518 | 3.026 |
| Nickel | 12.804 | 8.614 |
| Iron | 27.936 | 14.201 |
| Molybdenum | [Reserved] | [Reserved] |
| Ammonia (as N) | 9638.000 | 4237.000 |
[50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31704, 31705 Aug. 3, 1990]