40 CFR § 435.42 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
§ 435.42 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
Except as provided in 40 CFR 125.30-125.32, 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 Effluent Limitations—Oil and Grease
[In milligrams per liter]
| Pollutant parameter waste source | Maximum for any 1 day | Average of values for 30 consecutive days shall not exceed | Residual chlorine minimum for any 1 day |
|---|---|---|---|
| Produced water | 72 | 48 | NA |
| Deck drainage | ( 1) | ( 1) | NA |
| Water-based: | |||
| Drilling fluids | ( 1) | ( 1) | NA |
| Drill Cuttings | ( 1) | ( 1) | NA |
| Non-aqueous: | |||
| Drilling fluids | No discharge | No discharge | NA |
| Drill Cuttings | ( 1) | ( 1) | NA |
| Well treatment, workover, and completion fluids | ( 1) | ( 1) | NA |
| Sanitary: | |||
| M10 | NA | NA | 2 1 |
| M9IM 3 | NA | NA | NA |
| Domestic 3 | NA | NA | NA |
| Produced sand | Zero discharge | Zero discharge | NA |
1 No discharge of free oil. See § 435.41(y).
2 Minimum of 1 mg/l and maintained as close to this concentration as possible.
3 There shall be no floating solids as a result of the discharge of these wastes.