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EPA Region 6 - NPDES General Permit GMG290000
OCS Federal Waters, Western Gulf of Mexico
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Published on November 3, 2004
PERMIT EFFECTIVE: November 6, 2004
NEW PRODUCED WATER MONITORING REQUIREMENTS
- The final permit includes a requirement for collecting produced water samples to
evaluate effluent classifications and study the effects on Hypoxia. There are two
options available to meet this monitoring requirement. Operators can monitor at
each platform or they can participate in an industry-wide study. This applies to
the lease blocks listed below which are located within the Hypoxic zone.
- High Island blocks 36, 37, 47, 48, 86, 117, 118, 132, A1, A2, A3, A4,
A11, A12, A13 and A14.
- High Island East addition blocks 38 through A180.
- Sabine Pass blocks 5 through 16.
- West Cameron blocks 154 through 356.
- West Cameron blocks 22 through 276.
- East Cameron blocks 10 through 190.
- Vermilion blocks 11 through 211.
- South Marsh Island North addition blocks 208 through 288.
- South Marsh Island blocks 1 through 55.
- Eugene Island blocks 20 through 245, 113A, 113B, 128A and 129A.
- Ship Shoal blocks 37 through 211.
- South Pelto blocks 1 through 25.
- South Timbalier blocks 7 through 182.
- Grand Isle blocks 16 through 63.
- West Delta blocks 16 through 101.
- When a produced water visual sheen is observed, a sample must be collected
within TWO (2) HOURS of the sheen sighting in the vicinity of the discharge and
analyzed for oil and grease. The sample type can either be a grab or a
composite collected at even intervals during a period of 24-hours or less.
NEW MISCELLANEOUS DISCHARGES ADDED
- To better represent deep water technologies new fluids have been added under
the Miscellaneous Discharge section. They are Sub sea Wellhead Preservation
fluid, Sub sea Production Control fluid, Hydrate Control fluid, Umbilical Steel
Tube Storage fluid, Leak Tracer fluid and Riser Tensioner fluid. A 7-day NOEC
is the test that will be used on these fluids with the e xclusion of hydrate fluids.
- For hydrostatic testing of new and existing pipelines which have been chemically
treated, whereby the test water is sub sea and at the end of a pipeline, hence
making it unfeasible to collect a sample at the discharge point, a sample may be
collected prior to use of the fluid.
OTHER ITEMS OF INTEREST ADDED TO THE PERMIT
- A Notice of Intent to be Covered is still required, however, the requirement to
submit fourteen day advanced notification of intent to be covered by the permit is
removed.
- When submitting a Notice of Termination the final Discharge Monitoring Report
will be required to be submitted also.
- The Produced Water Toxicity Testing monitoring period will be removed and will
coincide with the Annual Discharge Monitoring Report monitoring period.
- For Sanitary Waste – Facilities continuously manned by 10 or more has been
revised to read continuously manned for thirty or more consecutive days.
If you have any questions about the NPDES Permit, please feel free to contact
Denise Rogers at (281) 578-3388.
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To view this page online, please visit
http://www.jccteam.com/RegAlerts/110304.aspx.
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