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ADDRESS ALL CORRESPONDENCE TO: <br />COMMERCIAL TESTING 9 ENGINEERING CO. <br />4665 PARIS STREET, SUITE B-200 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE DAL (~CO 90239 <br />FAX: (303) 373-4791 <br />PERMITTEE: Twentymile Coal Company CDPS NO.: CO-0036684 OUTFACE: 62-FCT <br />TYPE TEST: ROUTINE: _ ACCELERATED: XX SPECIES: C. dubia <br />TEST RESULTS: LC6o: 99.9% STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN: 0905 AM 06/05/03 END: 0950 AM 06/07/03 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 72.5% 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 10 <br /># ALIVE AFTER 72 HRS: <br /># ALIVE AFTER 96 HRS: <br />RECEIVING WATER USED FOR DILUTION? NO <br />HARDNESS {mg/l): RECEIVING WATER: <br />ALKALINITY {mg/I): RECEIVING WATER: <br />pH: INITIAL: CONTROL <br />FINAL: CONTROL <br />TOTAL AMMONIA AS N (mg/I): <br />WERE ALL TEST CONDITIONS IN CONFORMAN <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />TOTAL RESIDUAL CI - (mg/I): <0.1 <br />EFFLUENT: 2560 RECON WATER: 110 <br />EFFLUENT: 365 RECON WATER: 90 <br />8.3 100% EFFLUENT 8.1 <br />7.5 100% EFFLUENT 7.8 <br />INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />CE WITH DIVISION.GUIDELINES? YES <br />LABORATORY: SGS COMMERCIAL TESTING & ENGINEERING ANALYST: <br />COMMENTS: Accelerated test #1. This test failed. LCD = 99.99'0. <br /> <br />04/08/03 <br />' 6 Commercial Testing & engineering Co. Minerals Services -Corporate Office <br />1919 S. Highland Ave., Suite 2108. Lombard, IL 60148 t (fi3D1953-9300 116301963-9306 viww.sgs.com <br />Fri Member N Me SGS firoup I$pcl/14 GAntrale tlp Survpilkncc) <br />