Notes
Washington State Department of Ecology, Water Quality Program publication (WQ-R-95-80, revised December 1998) providing laboratory guidance and Whole Effluent Toxicity (WET) test review criteria. Covers WET testing requirements in NPDES permits, options for permittees, invalid test criteria including EPA statistical flowcharts, negative controls, test termination, acceptable start counts, pH adjustment, randomization, and power standards. Also addresses dechlorination, reference toxicant tests, outliers, sporadic mortalities, NOEC expression, brine controls, dual endpoint tests, sample handling, holding time, filtration, and aeration. Administrative Record number AR041832.
