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COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br /> <br />PERMITTEE: Twentymile Coal Company CDPS NO.: CO-0036684 OUTFACE: 62 FCT <br /> <br />TYPE TEST; ROUTINE: XX ACCELERATED: SPECIES: C. dubis <br />TEST RESULTS: LCD: >100% STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN: 1100 4111/07 END: 1100 4/13107 <br /> <br /> DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 12.5% 25% 50% 75% 100% <br /># @ START OF TEST: 20 20 20 20 20 20 <br /># ALIVE AFTER 24 HRS: 20 20 20 20 20 20 <br /># ALIVE AFTER 48 HRS: 20 20 20 20 20 20 <br /># ALIVE AFTER 72 HRS: <br /># ALIVE AFTER 96 HRS: <br />-- RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CI' (mg/l): <0.1 <br />-- HARDNESS (mg/l): RECEIVING WATER: EFFLUENT: 2450 RECON WATER: 70 <br />._ ALKALINITY (mgll): RECEIVING WATER: EFFLUENT: 655 RECON W ATER: 70 <br />•- pH: INITIAL: CONTROL 7.9 100% EFFLUENT 8.2 <br />FINAL: CONTROL 7.9 100% EFFLUENT 8.3 <br />. _ TOTAL AMMONIA AS N (mgll): INITIAL 100%: <0.1 FINAL 100%: <0.1 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS North America Inc. ANALYST: Holliday , Wehrle <br /> <br />COMMENTS: <br />04/08'03 <br /> <br />