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COLORADO -CDPS WET TEST REPORTFORM -CHRONIC <br />PERMITTEE: Twentymile Coal Co. CDPS N0. CO-0036684 OUTFACE: OOIA <br />TYPE TEST: ROUTINE: ?~ ACCELERATID:_ TEST SPECIES: P_.p>'omelas <br />TEST RESULTS LETHALITY GROWTH STATISTICAL METHOD <br />Concentration with Statistical Difference ]00% 75% Steel's/Dunnett's <br />Pass/Fail Pass N/A <br />ICzy 81.1% 81.1% Bootstra <br />Pass/Fail Pass N/A <br />TEST TllvvlE & DATE START 1135 AM 05/16/00 END 0935 AM 05/23/00 <br />DILUTION (% EFFLUENT) <br />MEASUREMENTS CONTROL 12.5•/. 21 •/. 50% 75% 100°/. <br />Da 1 % Survival 100 100 ] 00 ] 00 100 ] 00 <br />Da 2 ] 00 100 100 100 100 77.5 <br />Da 3 100 100 100 100 100 62.5 <br />Da 4 ]00 100 100 97.5 95.0 40.0 <br />Da 5 100 100 100 97.5 92.5 37.5 <br />Da 6 100 100 97.5 97.5 92.5 30.0 <br />Da 7 100 97.5 87.5 97.5 92.5 20.0 <br /> <br />7 Da Mean Wei 0.332 0.300 0.300 0.263 0.185 0.110 <br /> <br />H 'mum/Mmimum 8.4/7.6 8.4/7.8 8.3/8.0 8.4!7.9 8.4/8.0 8.3/7.9 <br />RECEIVING WATER USID FOR DII,UTION? IVQ TOTAL RESIDUAL CI" (mg/!): <O 11 <br />HARDNESS ~,[Il• REC'V WATER EFFLUENT: 2358 RECON WATER: 118 <br />ALKALINITY (m¢/Il' REC'V WATER- EFFLUENT• 322 RECON WATER: 78 <br />TOT AMMONIA (mg~l)' INITIAL 100%• <1 0 FINAL 100%: <I.0 <br />WERE ALL TEST CONDTI70NS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />1F NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />_.---, <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: C~~..-: ~~ <br />4/21/00 <br />COMMERCIAL TESTING & ENGINEERING CO. <br />Watemterked For Your Protection ~~~ <br />