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Client: Cotter Corporation CO-0001244 SCG Project No.: 3101187 <br />Site: Schwartzwalder Mine WWTF <br />Quality Assurance Check List - Chronic Whole Effluent Toxicity Test <br />Client: Cotter Corporation SeaCrest Sample No.: 3101187 <br />Species Tested: Ceriodaphnia dubia and Fathead minnow <br />Start Date of Test <br />(Ceriodaphnia dubia) <br />Start Date of Test <br />(Fathead minnow) <br />12-28-2010 12-28-2010 <br />Sample received in lab properly preserved (0-6°C)9 N* <br />Sample delivered on ice or equivalent? V <br />Test initiated within 36-hours of collection? V <br />Test protocol conforms to CDPHE guidelines (Ceriodaphnia dubia)? Y <br />Test protocol conforms to CDPHE guidelines (Fathead minnow)? Y <br />Average test temp. tl°C (Ceriodaphnia dubia)? V <br />Average test temp. f 1 °C (Fathead minnow)? Y <br />DO level >4.Omg/L; no super-saturation (Ceriodaphnia dubia)? Y <br />DO level >4.0mg/L; no super-saturation (Fathead minnow)? Y <br />Survival in control >90%, > 0% for chronic (Ceriodaphnia dubia)? Y <br />Survival in control >90%, ?80% for chronic (Fathead minnow)? Y <br />Ceriodaphnia dubia neonates in control <24-hours old? Y <br />Fathead minnow larvae in control 1 to 14 days old? Y <br />Appropriate reference toxicity test conducted? V <br />Lab. Ref. Tox. test results within the confidence limits for the lab? Y <br />*Samples #1 and #3 received at 8.5°C and TOT, respectively, the same day as sampled. <br />Si nature / Da, <br />Position: Lab Manager <br />SeaCrest Group <br />Q ks, o.. <br />28