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COLORADO - CDPS W ET TEST REPORT FORM -CHRONIC <br />PERMITTEE: Cyprus Yampa Valley Coal Corp. CDPS NO. CO-0027154 OUTFACE: 005 <br />TYPE TEST: ROUTINE: J{X ACCELERATED: TEST SPECIES: Pte. romelas <br />TEST RESULTS LETHALTI'Y GROWTH STATISTICAL METHOD <br />Concentration with Statistical Difference >100% 100% Steel's/Dunnett's <br />Pass/Fail Pass N/A <br />ICzs 91.3% 87.3% Bootstra <br />Pass/Fail Fail N/A <br />TEST TIIvIE & DATE START 0955 AM 09/21/99 END 0830 AM 09/28/99 <br />DILUTION (% EFFLUENT) <br />MEASUREMENTS CONTROL 12.5% 25% 50% 75% 100% <br />Da 1 % Survival 100 100 100 100 100 100 <br />Da 2 100 100 100 100 100 100 <br />Da 3 100 100 100 100 100 77.5 <br />Da 4 100 100 100 100 97.5 77.5 <br />Da 5 100 100 100 100 95.0 75.0 <br />Da 6 95.0 100 100 97.5 95.0 72.5 <br />Da 7 95.0 100 100 97.5 90.0 65.0 <br /> <br />7 Da Mean D Wei ht 0.428 0.503 0.517 0.490 0.501 0.240 <br /> <br />H (Maximum/Minimum 8.5/7.7 8.3/7.9 8.2/7.8 8.1/7.7 8.1/7.7 8.0/7.8 <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CC (mgll): <0.1 <br />HARDNESS (mg/I): REC'V WATER: EFFLUENT: 2543 RECON WATER: 117 <br />ALKALINITY (ms/Il: REC'V WATER: EFFLUENT: 90 RECON WATER: 88 <br />TOT. AMMONIA (mg/I): INITIAL 100%: <I.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDIITONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPEC~'ICATIONS: <br />C LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: (~.:~ iC-~-•-•- <br />4/14/99 <br />COMMERCIAL TESTING 8 ENGINEERING CO. <br />-F,~ Ltd <br />Ongmal WalermarkeA Fm Vcor Prolecno~ <br />