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COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />PERMITTEE: Powderhorn Coal Company CDPS NO. CO-00 27146 OUTFACE 004 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C.dubia <br />TEST RESULTS: LC50: >100 % STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 12:30PM 7 / 7 / 98 END 11:45AM 7 / 9 / 98 <br /> DILUTIONS (% EFFLUENT) <br /> <br />MEASUREMENTS CONTROL(0%) 0.2 % 25 % 50 % 75 % 100 <br /> <br />NO. @ START OF TEST: 20 20 20 20 20 20 <br /> <br />NO. LIVE AFTER 24 HRS: 20 20 20 20 20 20 <br /> <br />AFTER 48 HRS: 20 20 19 19 20 20 <br />AFTER 72 HRS: <br />AFTER 96 HRS: <br />RECEIVING WATER USED FOR DILUTION? NO <br />HARDNESS, MG/L: RECEIVING WATER <br />ALKALINITY, MG/L: RECEIVING WATER <br />TOT. RESID. CHLORINE, MG/L: 100% <0.1 <br />. EFFLUENT 110 RECON WATER 115 <br />. EFFLUENT 770 RECON WATER 90 <br />PH: INITIAL - CONTROL 8.0 100% 8.6 FINAL - CONTROL 7.4 100% 8.1 <br />T. AMMONIA AS N, MG/L: 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: Commercial Testing and EnaineerinQ ANALYST ~H-~.'.~C~~2 <br />COMMENTS <br />COMMENCIALTESTING 8 ENGINEENING CO. <br />7/1/93 <br />F~88 L1E <br />Original Watermarked For Your Protection ; <br />