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<br />COMMEECIAL TESTING 8 ENGINEENINO CO. <br />~~" ~~ COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PERMTTTEE: Twentymile Coal Company CDPS NO.: C0-0036684 OUTFACE: FCT-Site #62 <br />TYPE TEST: ROUTINE: ACCELERATED: XX TEST SPECIES: O.dubia <br />TEST RESULTS: LCD: 54.3% STATISTICAL METHOD: Spearman-Karber <br />TEST TIME & DATE: BEGIN 1135 AM 02/18/03 END 1105 AM 02/20/03 <br />DILUTIONS (% EFFLUENT? <br />MEASUREMENTS 0% 12.5% 25% 50% 75% 100% <br /># -START OF TEST: 20 20 20 2fl 20' 20 <br /># ALIVE AFTER 24,HRS: 20 20 20 20 20 19 <br /># ALPJE AFTER 48 HRS: 20 20 20 15 1 0 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl ' (mg/1): <0.1 <br />HARDNESS (mg/1): RECEIVING WATER: EFFLUENT: 2065 RECON WATER: 110 <br />ALIZALINITI' (mg/1):RECEIVING WATER: EFFLUENT: 495 RECON WATER: 85 <br />pH: INITIAL: CONTROL 8.5" 100% EFFLUENT 7.8 <br />FINAL: CONTROL 8.4 100'/0 EFFLUENT 8.2 <br />TOTAL AMMONIA AS N (mg/1): <br />II~iI17AL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDTI'IONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LEST DEVIATIONS FROM-TEST SPECIFICATIONS: <br />LABORATORY: COMMERCLAL TESTING & ENGINEERING .ANALYST: l.~ <br />COMMENTS: Accelerated test #1 <br />4/14/99 <br />F52G <br />