40 CFR § 410.12
Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
June 9, 2020
(a) 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 practicable control technology currently available (BPT):
Open Table
| Pollutant or pollutant property | BPT limitations | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Kg/kkg (or pounds per 1,000 lb) of wool | ||
| BOD5 | 10.6 | 5.3 |
| COD | 138.0 | 69.0 |
| TSS | 32.2 | 16.1 |
| Oil and grease | 7.2 | 3.6 |
| Sulfide | 0.20 | 0.10 |
| Phenol | 0.10 | 0.05 |
| Total chromium | 0.10 | 0.05 |
| pH | (1) | (1) |
1Within the range 6.0 to 9.0 at all times.
(b) Additional allocations equal to the effluent limitations established in paragraph (a) of this section are allowed any existing point source subject to such effluent limitations that scours wool through “commission scouring” as defined in §410.11.
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