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<br />SGS- <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Twentymile Coal Company CDPS NO.: CO-0027154 OUTFACE: 005 <br />TYPE TEST: ROUTINE: XX ACCELERATED: SPECIES: D. magna <br />TEST RESULTS: LCD: >100% STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN: 1020 AM 11/29/05 END: 1005 AM 12/1/05 <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 19 <br /># ALIVE AFTER 48 HRS: 20 20 20 20 20 19 <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: 1005 RECON WATER: 185 <br />ALKALINITY (mgll): RECEIVING WATER: EFFLUENT: 145 RECON W ATER: 125 <br />pH: INITIAL: CONTROL 8.2 100% EFFLUENT 8.6 <br />FINAL: CONTROL 7.6 100% EFFLUENT 8.5 <br />TOTAL AMMONIA AS N (mg/I ): INITIAL 100%: <1.0 FINAL 100%: <1.0 <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: ~~~5 4s <br />COMMENTS: <br />04/08103 <br /> <br />