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I <br />COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Twentvmile Coal Company CDPS NO,: CO-0042161 OUTFACE: 115-FCBH <br />TYPE TEST: ROUTINE: ACCELERATED: XX SPECIES: D. Magna <br />TEST RESULTS: LCD: >100% STATISTICAL METHOD: Binominal <br />TEST TIME & DATE: BEGIN: 1140 AM 07/14/04 END: 1040 AM 07/16/04 <br />DILUTIONS (% EFFLUENT), <br />MEASUREMENTS 0% 12.5% 25% 50% 75% 100% <br /># START OF TE T: 20 20 20 20 20 20 <br /># ALIVE AFTER 24 HRS: 20 20 20 20 20 20 <br /># ALIVE AFTER 48 HRS: 20 19 20 20 20 20 <br /># ALIVE AFTER 72 HRS: <br /># ALIVE AFTER 96 HRS: <br />RECEIVING WATER USED FOR DILUTION? NO <br />HARDNESS (mg/I): RECEIVING WATER: <br />TOTAL RESIDUAL CI " (mg/I): X0.1 <br />EFFLUENT: 870 RECON WATER: 240 <br />ALKALINITY (mg/I): RECEIVING WATER: EFFLUENT: 730 RECON WATER: 160 <br />pH: INITIAL: CONTROL 8.1 100% EFFLUENT 8.0 <br />FINAL: CONTROL 8.0 100% EFFLUENT 8.5 <br />TOTAL AMMONIA AS N (mg/I}: INITIAL 100%: X2.0 FINAL 100%: X2.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS MINERALS SERVICES DIVISION ANALYST: ate, <br />COMMENTS: Accelerated test #3. LC~o = >100%. ~(J'~~ ~/ <br />ti <br />8 <br /> <br />F326 <br />04/08/03 <br />