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ADDRESS ALL CORRESPONDENCE TO: <br />COMMERCIAL TESTING 8 ENGINEERING CO. <br />4665 PARIS STREET, SURE 8-200 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE DEE vE~~ 0 3~7iz <br />FAX: (303) 3734781 <br />PERMITTEE: Twentymile Coal Company CDPS NO.: CO-0042161 OUTFACE: 115 <br />TYPE TEST: ROUTINE: XX ACCELERATED: SPECIES: D. magna <br />TEST RESULTS: LCD: >100% STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN: 0805 AM 04/15/03 END: 0900 AM 04/17/03 <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 17 14 11 <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 - (mgA): <0.1 <br />EFFLUENT: 700 RECON WATER: 200 <br />ALKALINITY (mg/I): RECEIVING WATER: EFFLUENT: 955 RECON W ATER: 160 <br />pH: INITIAL: CONTROL 8.7 100% EFFLUENT 8.2 <br />FINAL: CONTROL 8:7 100% EFFLUENT 8.7 <br />TOTAL AMMONIA AS N (mg/I): INITIAL 100%: X3.0 FINAL 100%: X3.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS COMMERCIAL TESTING & ENGINEERING ANALYST: ~^^+_-`-~ <br />COMMENTS: <br />- 04/08/03 <br />6 Commercial Testing & Engineering Co. Minerals Services -Corporate OfFice <br />.I 1919 5. Highland Ave., Suite 2108, Lombard, IL 60149 116301953-9300 i 163 01 953-9 3 0 6 wwwsi <br />Member orNa 5Ga Group 1$OC1AfA GAnArele tla Gurvpiuencel <br />