40 CFR 435.12 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (§ 425.01 To Parts 611-699) — Environmental Protection Agency (Continued) (§ 425.01 To Parts 611-699) — Effluent Guidelines And Standards (Continued) (§ 425.01 To § 471.106) — Oil And Gas Extraction Point Source Category (§ 435.10 To Subpart H) — Offshore Subcategory (§ 435.10 To Appendix 8 To Subpart A Of Part 435) — Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

4 Aug 2016

Except as provided in 40 CFR 125.30-32, 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 fluids ( 1) ( 1) NA
Sanitary:
M10 NA NA 2 1
M9IM 3 NA NA NA
Domestic NA NA NA

1 No discharge of free oil. See § 435.11(x).

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.

40 CFR 435.12
[58 FR 12504, Apr. 13, 1979, as amended at 66 FR 6897, Jan. 22, 2001; 77 FR 29836, May 18, 2012]