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ENV-99-180 Proposed Site-Specific Selenium Criteria for Linnville Bayou

Jena Golightly, Phillips Petroleum; Chris C. Stanford, JD Consulting, LLC

Format:
Electronic (digital download/no shipping)

Associate Member, International Member, Petrochemical Member, Refining Member - $0.00
Government, NonMember - $35.00

Description:

A petroleum refinery in the Texas Gulf Coast region discharges treated effluent into a small freshwater stream. Over the last three years, the effluent selenium concentration has ranged from 2 to 42 mg/L. Because the receiving stream is effluent dominated, in-stream selenium concentrations approximate that of the effluent and the chronic aquatic life protection criterion of 5 mg/L is consistently exceeded. A series of studies incorporating water, sediment, and biota sampling have been performed over a four year period. The field studies included aquatic life use determinations utilizing bioassessment protocols developed by the Texas Natural Resource Conservation Commission and the Texas Department of Parks and Wildlife. Despite the elevated selenium levels, none of the selenium-induced impacts to aquatic life which would be predicted based on published literature (i.e., teratogenic abnormalities, reduced reproduction, or species/population declines) have been identified in the receiving stream. A site-specific chronic criterion for selenium has been proposed for this stream for inclusion in the Texas Surface Water Quality Standards. The proposed criterion is based upon bioaccumulation factors developed from the sampling studies and an effects threshold derived from a review of published literature. This paper presents a summary of the results of the field studies and the development of the sitespecific criterion.

Product Details:

Product ID: ENV-99-180
Publication Year: 1999