View all text of Subpart G [§ 421.70 - § 421.77]
§ 421.72 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
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 control technology currently available:
(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of sinter production | Lead | 594.000 | 270.000 | Zinc | 525.000 | 219.600 | Total suspended solids | 14,760.000 | 7,020.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(b) Subpart G—Blast Furnace Wet Air Pollution Control.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of blast furance lead bullion produced | Lead | .000 | .000 | Zinc | .000 | .000 | Total suspended solids | .000 | .000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(c) Subpart G—Blast Furnace Slag Granulation.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of blast furance lead bullion produced | Lead | 6,155.000 | 2,798.000 | Zinc | 5,446.000 | 2,276.000 | Total suspended solids | 153,000.000 | 72,740.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(d) Subpart G—Dross Reverberatory Slag Granulation.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated | Lead | 9,499.000 | 4,318.000 | Zinc | 8,405.000 | 3,512.000 | Total suspended solids | 236,000.000 | 112,300.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of dross reverberatory furnace production | Lead | 15,920.000 | 7,235.000 | Zinc | 14,080.000 | 5,884.000 | Total suspended solids | 395,500.000 | 188,100.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(f) Subpart G—Zinc Fuming Wet Air Pollution Control.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of blast furance lead bullion produced | Lead | 702.900 | 319.500 | Zinc | 622.000 | 259.900 | Total suspended solids | 17,470.000 | 8,307.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(g) Subpart G—Hard Lead Refining Slag Granulation.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of hard lead produced | Lead | .000 | .000 | Zinc | .000 | .000 | Total suspended solids | .000 | .000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(h) Subpart G—Hard Lead Refining Air Pollution Control.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of hard lead produced | Lead | 32,730.000 | 14,880.000 | Zinc | 28,960.000 | 12,100.000 | Total suspended solids | 813,300.000 | 386,800.000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(i) Subpart G—Facility Washdown.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of lead bullion produced | Lead | .000 | .000 | Zinc | .000 | .000 | Total suspended solids | .000 | .000 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(j) Subpart G—Employee Handwash.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of lead bullion produced | Lead | 5.445 | 2.475 | Zinc | 4.818 | 2.013 | Total suspended solids | 135.300 | 64.350 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(k) Subpart G—Respirator Wash.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of lead bullion produced | Lead | 8.745 | 3.975 | Zinc | 7.738 | 3.233 | Total suspended solids | 217.300 | 103.400 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.
(l) Subpart G—Laundering of Uniforms.
BPT Effluent Limitations
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | mg/kkg (pounds per billion pounds) of lead bullion produced | Lead | 25.580 | 11.630 | Zinc | 22.630 | 9.455 | Total suspended solids | 635.500 | 302.300 | pH | ( 1) | ( 1) |
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1 Within the range of 7.5 to 10.0 at all times.