[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR435.45]

[Page 344]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 435--OIL AND GAS EXTRACTION POINT SOURCE CATEGORY--Table of Contents
 
                     Subpart D--Coastal Subcategory
 
Sec. 435.45  Standards of performance for new sources (NSPS).

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

                                            NSPS Effluent Limitations
----------------------------------------------------------------------------------------------------------------
                 Stream                            Pollutant parameter              NSPS effluent limitations
----------------------------------------------------------------------------------------------------------------
Produced Water:
    (A) All coastal areas except Cook     .....................................  No discharge.
     Inlet.
    (B) Cook Inlet......................  Oil & Grease.........................  The maximum for any one day
                                                                                  shall not exceed 42 mg/l, and
                                                                                  the 30-day average shall not
                                                                                  exceed 29 mg/l.
Drilling Fluids, Drill Cuttings, and
 Dewatering Effluent: \1\
    (A) All coastal areas except Cook     .....................................  No discharge.
     Inlet.
    (B) Cook Inlet:.....................
      Water-based drilling fluids, drill  SPP Toxicity.........................  Minimum 96-hour LC50 of the SPP
       cuttings, and dewatering effluent.                                         Toxicity Test \4\ shall be 3%
                                                                                  by volume.
                                          Free oil.............................  No discharge.\2\
                                          Diesel oil...........................  No discharge.
                                          Mercury..............................  1 mg/kg dry weight maximum in
                                                                                  the stock barite.
                                          Cadmium..............................  3 mg/kg dry weight maximum in
                                                                                  the stock barite.
      Non-aqueous drilling fluids and     .....................................  No discharge.
       dewatering effluent.
      Drill cuttings associated with non- .....................................  No discharge.\5\
       aqueous drilling fluids.
Well Treatment, Workover and Completion
 Fluids:
    (A) All coastal areas except Cook     .....................................  No discharge.
     Inlet.
    (B) Cook Inlet......................  Oil & Grease.........................  The maximum for any one day
                                                                                  shall not exceed 42 mg/l, and
                                                                                  the 30-day average shall not
                                                                                  exceed 29 mg/l.
Produced Sand...........................  .....................................  No discharge.
Deck Drainage...........................  Free Oil \3\.........................  No discharge.
Sanitary Waste
    Sanitary M10........................  Residual Chlorine....................  Minimum of 1 mg/l and
                                                                                  maintained as close to this
                                                                                  concentration as possible.
    Sanitary M9IM.......................  Floating Solids......................  No discharge.
Domestic Waste..........................  Floating Solids, Garbage and Foam....  No discharge of floating solids
                                                                                  or garbage or foam.
----------------------------------------------------------------------------------------------------------------
\1\ NSPS limitations for dewatering effluent are applicable prospectively. NSPS 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 appendix 1 to 40 CFR Part 435, subpart A).
\3\ As determined by the presence of a film or sheen upon or a discoloration of the surface of the receiving
  water (visual sheen).
\4\ As determined by the suspended particulate phase (SPP) toxicity test (see Appendix 2 of subpart A of this
  part).
\5\ When Cook Inlet operators cannot comply with this no discharge requirement due to technical limitations (see
  Appendix 1 of subpart D of this part), Cook Inlet operators shall meet the same stock limitations (C16-C18
  internal olefin) and discharge limitations for drill cuttings associated with non-aqueous drilling fluids for
  operators in Offshore waters (see Sec.  435.15) in order to discharge drill cuttings associated with non-
  aqueous drilling fluids.


[61 FR 66125, Dec. 16, 1996; 62 FR 1682, Jan. 13, 1997, as amended at 66 
FR 6918, Jan. 22, 2001]

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