Standards of performance for new sources (NSPS).

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§ 435.15 Standards of performance for new sources (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards (NSPS):

Expand Table

New Source Performance Standards

Waste source Pollutant parameter NSPS
Produced water Oil and grease The maximum for any one day shall not exceed 42 mg/l; the average of daily values for 30 consecutive days shall not exceed 29 mg/l.
Drilling fluids and drill cuttings:
(A) For facilities located within 3 miles from shore No discharge.1
(B) For facilities located beyond 3 miles from shore:
Water-based drilling fluids and associated drill cuttings SPP Toxicity Minimum 96-hour LC50. of the SPP Toxicity Test2 shall be 3% by volume.
Free oil No discharge.3
Diesel oil No discharge.
Mercury 1mg/kg dry weight maximum in the stock barite.
Cadmium 3 mg/kg dry weight maximum in the stock barite.
Non-aqueous drilling fluids No charge.
Drill cuttings associated with non-aqueous drilling fluids:
Stock Limitations (C16-C18 internal olefin Mercury 1mg/kg dry weight maximum in the stock barite.
Cadmium 3 mg/kg dry weight maximum in the stock barite.
Polynuclear Aromatic Hydrocarbons (PAH) PAH mass ratio5 shall not exceed 1 × 10−5.
Sediment toxicity Base fluid sediment toxicity ratio6 shall not exceed 1.0.
Biodegradation rate Biodegradation rate ratio7 shall not exceed 1.0.
Discharge Limitations Diesel oil No discharge.
SPP Toxicity Minimum 96-hour LC50. of the SPP Toxicity Test2 shall be 3% by volume.
Sediment toxicity Drilling fluid sediment toxicity ratio8 shall not exceed 1.0.
Formation Oil No discharge.9
Base fluid retained on cuttings For NAFs that meet the stock limitations (C16-C18 internal olefin) in this table, the maximum weighted mass ratio averaged over all NAF well sections shall be 6.9 g-NAF base fluid/100 g-wet drill cuttings.10
For NAFs that meet the C12-C14 ester or C8 ester stock limitations in footnote 11 of this table, the maximum weighted mass ratio averaged over all NAF well sections shall be 9.4 g-NAF base fluid/100 g-wet drill cuttings.
Well treatment, completion, and workover fluids Oil and grease The maximum for any one day shall not exceed 42 mg/l; the average of daily values for 30 consecutive days shall not exceed 29 mg/l.
Deck drainage Free oil No discharge.4
Produced sand No discharge.
Sanitary M10 Residual chlorine Minimum of 1 mg/l and maintained as close to this as possible.
Sanitary M9IM Floating solids No discharge.
Domestic Waste Floating solids No discharge.
Foam No discharge.
All other domestic wastes See 33 CFR part 151.

[58 FR 12504, Apr. 13, 1979, as amended at 66 FR 6900, Jan. 22, 2001; 66 FR 33134, June 20, 2001; 69 FR 18803, Apr. 9, 2004; 77 FR 29836, May 16, 2012]


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