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 conventional pollutant control technology (BCT):
BCT Effluent Limitations------------------------------------------------------------------------
Pollutant BCT effluent
Stream parameter limitations------------------------------------------------------------------------Produced Water (all facilities). Oil & Grease...... The maximum for
any one day shall
not exceed 72 mg/
l and the 30-day
average shall not
exceed 48 mg/l.Drilling Fluids and Drill
Cuttings and Dewatering
Effluent: \1\
All facilities except Cook .................. No discharge.
Inlet.
Cook Inlet:.................
Water-based drilling Free Oil.......... No discharge. \2\
fluids, drill cuttings,
and dewatering effluent.
Non-aqueous drilling .................. No discharge.
fluids and dewatering
effluent.
Drill cuttings associated Free Oil.......... No discharge. \2\
with non-aqueous drilling
fluids.Well Treatment, Workover and Free Oil.......... No discharge. \2\
Completion Fluids.Produced Sand................... .................. No discharge.Deck Drainage................... Free Oil.......... No discharge. \3\Sanitary Waste:
Sanitary M10................ Residual Chlorine. Minimum of 1 mg/l
maintained as
close to this
concentration as
possible.
Sanitary M91M............... Floating Solids... No discharge.Domestic Waste.................. Floating Solids No discharge of
and garbage. Floating Solids
or garbage.------------------------------------------------------------------------\1\ BCT limitations for dewatering effluent are applicable
prospectively. BCT limitations in this rule are not applicable to
discharges of dewatering effluent from reserve pits which as of the
effective date of this rule no longer receive drilling fluids and
drill cuttings. Limitations on such discharges shall be determined by
the NPDES permit issuing authority.\2\ As determined by the static sheen test. See Sec. 435.41(ff).\3\ As determined by the presence of a film or sheen upon or a
discoloration of the surface of the receiving water (visual sheen). [61 FR 66125, Dec. 16, 1996; 62 FR 1682, Jan. 13, 1997, as amended at 66 FR 6917, Jan. 22, 2001; 77 FR 29846, May 18, 2012]