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FUNDAMENTAL FLAWS IN EPA'S WET VALIDATION APPROACH REVEALED: WET TEST VARIABILITY IS FAR WORSE THAN CHEMICAL METHODS

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Abstract:

The United States Environmental Protection Agency (EPA) has adopted short-term chronic whole effluent toxicity test methods (the chronic WET test) for use in monitoring compliance with effluent limitations. These methods are reported by EPA to be similar in inter-laboratory test variability to the test methods adopted for chemical parameters (see Final Report: Interlaboratory Variability Study of EPA Short-term Chronic and Acute Whole Effluent Toxicity Test Methods, Vol. 1). This paper reviews in part the technical basis upon which EPA made its assertion and demonstrates test variability far exceeds that estimated by EPA.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864705783856956

Publication date: 2005-01-01

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