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.: <br />THE SEACREST GROUP <br />Quality Assurance Check List -Acute and Chronic Whole Effluent Toxicity Test <br />Client: Mountain Coal Company <br />Start Date of Test: April 2, 2003 <br />SeaCrest Sample Number: 303130 <br />Species Tested: Daphnia magna, Pimephaies promeias <br />Sample received in lab properly preserved (4°C)? N* <br />Sample delivered on ice or equivalent? Y <br />Test initiated within 36 hours of collection? Y <br />Test protocol conforms with CDPHE guidelines: D. magna? Y <br />Test protocol conforms with CDPHE guidelines: P, promelas? Y <br />Average Test Temp ± 1°C: D. magna? Y <br />Average Test Temp ± 1°C: P. promelas? Y <br />DO level >4.0 mg/L; no supersaturation: D. magna? Y <br />DO level >4.0 mg/L; no supersaturation: P. promelas? Y <br />Mortality in control <10%, <20% for chronic: D. magna? Y <br />Mortality in control <10%, <20% for chronic: P. promelas? Y <br />Daphnia magna neonates in control <24 hours old? Y <br />P. promelas larvae in control 1-14 days old in acute, < 1 day old in chronic? Y <br />Appropriate reference toxicity test conducted? Y <br />Lab Ref. Tox. test results within the confidence limits for the tab? Y <br />* Sample not at 4°C. <br />Signature <br />Position: Laboratory Manager <br />Date/~/ ~y <br />