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RECEIVED <br />JAN 30 2001 <br />COLORADO - CDPS WET TEST REPORT FORM - CHROi11iIC Minerals 8 Geoloov <br />PERMTITEE: Twemymile Coal Co. CDPS NO. CO-0027154 OUTFACE: 00] <br />TYPE TEST: ROUTINE: XX ACt'F] .FU ATED: TEST SPECIES: C. dubia <br />TEST RESULTS LETHALITY REPRODUCT]ON STATIST]CALMETHOD <br />Concentration with Statistical DifTerence >I00% 75% Fisher/Dunnett's <br />Pass/Fail Pass N/A <br />IGls >]00% >]00% Boot <br />Pass/Fail Pass N/A <br />TEST TIlvIE & DATE START 1100 AM 10/03/00 END 1030 AM ]0/11/00 <br />DILUTION (% EFFLUr.Nf) <br />MEASUREMENTS CONTROL 12.5% 25°/. SO% 75% ]OOY. <br />Da 1 % Survival 100 100 100 100 100 100 <br />Da 2 100 100 100 100 100 100 <br />Da 3 100 100 100 100 100 ]00 <br />Da 4 100 100 100 100 100 100 <br />Da 5 100 100 100 100 100 100 <br />Da 6 100 100 100 90 100 90 <br />Da 7 100 90 100 90 90 90 <br /> <br />Mean 3 Brood Total 16.0 15.1 12.8 12.0 10.5 8.8 <br /> <br />H 'mum/Mnimum 8.6/8.] 8.6/8.3 8.7/8.2 8.5/8.1 8.5/8.0 8.3(7.9 <br />RECEIVING WATER USID FOR DILUTION? NO TOTAL RESIDUAL Cl' (mg/1): <0.1 <br />HARDNESS ~mg/1)' REC'V WATER• EFFLUENT• 2327 RECON WATER: 137 <br />ALKALINITY (ma/1)• REC'V WATER• EFFLUENT 237 RECON WATER• 87 <br />TOT AMMONIA (m¢/1)• INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDTIIONS IN CONFORMANCE WITH DMSION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: <br />-~ <br />4/14/99 <br />COMMERCIAL TESTING 8 ENGINEERING CO. <br />~~~. Ltd <br />'Ori°inal Watermarked For Vour Protection .,... ,ry <br />