Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

§ 435.14 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

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 conventional pollutant control technology (BCT):

BCT Effluent Limitations

Waste source Pollutant parameter BCT effluent limitation
Produced waterOil & greaseThe maximum for any one day shall not exceed 72 mg/l; the average of values for 30 consecutive days shall not exceed 48 mg/l.
Drilling fluids and drill cuttings:
(A) For facilities located within 3 miles from shoreNo discharge. 1
(B) For facilities located beyond 3 miles from shore:
Water-based drilling fluids and associated drill cuttingsFree OilNo discharge. 2
Non-aqueous drilling fluidsNo discharge.
Drill cuttings associated with non-aqueous drilling fluidsFree OilNo discharge. 2
Well treatment, completion and workover fluidsFree oilNo discharge. 2
Deck drainageFree oilNo discharge. 3
Produced sandNo discharge.
Sanitary M10Residual chlorineMinimum of 1 mg/l and maintained as close to this concentration as possible.
Sanitary M91MFloating solidsNo discharge.
Domestic WasteFloating solidsNo discharge.
All other domestic wasteSee 33 CFR part 151.
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