Produced water toxicity tests accurately measure the produced water toxicity in marine environments?

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U.S. Environmental Protection Agency (EPA) Region VI has issued a general permit for offshore oil and gas discharges to the Gulf of Mexico that places numerical limits on whole effluent toxicity (WEI) for produced water. Recently proposed EPA general permits for other produced water discharges in Regions VI and X also include enforceable numerical limits on WET. Clearly, the industry will be conducting extensive produced water WET testing. Unfortunately, the WET test may not accurately measure the toxicity of the chemical constituents of produced water. Rather the mortality of test organisms may be attributable to (1) the high salinity of ... continued below

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11 p.

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Douglas, W.S. & Veil, J.A. October 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 20 times . More information about this article can be viewed below.

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  • Douglas, W.S. Aqua Survey, Inc., Flemington, NJ (United States)
  • Veil, J.A. Argonne National Lab., Washington, DC (United States)

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Description

U.S. Environmental Protection Agency (EPA) Region VI has issued a general permit for offshore oil and gas discharges to the Gulf of Mexico that places numerical limits on whole effluent toxicity (WEI) for produced water. Recently proposed EPA general permits for other produced water discharges in Regions VI and X also include enforceable numerical limits on WET. Clearly, the industry will be conducting extensive produced water WET testing. Unfortunately, the WET test may not accurately measure the toxicity of the chemical constituents of produced water. Rather the mortality of test organisms may be attributable to (1) the high salinity of produced water, which causes salinity shock to the organisms, or (2) an ionic imbalance caused by excesses or deficiencies of one or more of seawater`s essential ions in the test chambers. Both of these effects are likely to be mitigated in actual offshore discharge settings, where the receiving water will be seawater and substantial dilution will be probable. Thus, the additional salinity of produced water will be rapidly assimilated, and the proper marine ionic balance will be quickly restored. Regulatory authorities should be aware of these factors when interpreting WET test results.

Physical Description

11 p.

Notes

OSTI as DE96014396

Source

  • 3. international petroleum environmental conference, Albuquerque, NM (United States), 24-27 Sep 1996

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  • Other: DE96014396
  • Report No.: ANL/EA/CP--89257
  • Report No.: CONF-9609237--4
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 402391
  • Archival Resource Key: ark:/67531/metadc681350

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 5:36 p.m.

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Douglas, W.S. & Veil, J.A. Produced water toxicity tests accurately measure the produced water toxicity in marine environments?, article, October 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc681350/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.