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<br />L^~ COMMEPGIALTESTING d ENGINEEgINGCO. <br />,.~.,a COLORADO - CD PS WET TEST REPORT FORiVI -ACUTE <br />PERMITTEE: Mountain Coal Company CDPS NO.: CO-0038776 OUTFACE: 017 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: D. mcr~ur <br />TEST RESULTS: LCso: > 100% STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 1200 PM 07/17/02 END 1130 AM 07/19/02 <br />DILATIONS (% EFFLUENT) <br />MEASUREMENTS 0% 1.9% 25% 50% 75% 100% <br /># START OF TEST: 20 20 20 20 20 20 <br /># ALIVE AFTER 24 HRS: 20 20 20 20 18 I4 <br /># ALIVE AFTER 48 HRS: 20 20 20 19 16 11 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl ~ (mg/1): ~.I <br />IIARDNESS (mg/I): RECEIVING WATER: EFFLUENT: 90 RECON WATER: 200 <br />ALKALINITY (mg/1): RECEIVING WATER: EFFLUENT: 1685 RECON WATER: 150 <br />pH: INITIAL: CONTROL 8.6 100% EFFLLJEN"I 8.4 <br />FINAL: CONTROL 8.5 100% EFFLUENT 91 <br />TOTAL AMMONIA AS N (mg/1): INITIAL 100%: Q.0 FINAL 100%: Q.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: (_,iLt~uw-_~~ <br />COMMENTS: <br />4/14/99 <br />F szb <br />