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COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />PERMITTEE: Powderhorn Coal Company CDPS NO. CO-00 27146 OUTFACE 004 <br /> <br />TYPE TEST: ROUTINE: XX ACCELERATED:- TEST SPECIES: P.promelas <br /> <br />TEST RESULTS: LC50: >100 % STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 12:20PM 7 / 7 / 98 END 11:20AM 7 / 11 / 98 <br /> <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 />N0. LIVE AFTER 24 HRS: 20 20 20 20 18 20 <br /> <br />AFTER 48 HRS: 20 20 20 20 18 20 <br /> <br />AFTER 72 HRS: 20 20 20 19 18 20 <br /> <br />AFTER 96 HRS: 20 20 18 17 18 19 <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOT. RESID. CHLORINE, MG/L: 100% <0.1 <br />HARDNESS, MG/L: RECEIVING WATER EFFLUENT 110 RECON WATER 115 <br /> <br />ALKALINITY, MG/ L: RECEIVING WATER EFFLUENT 770 RECON WATER 90 <br /> <br />PH: INITIAL - CONTROL 8.0 100% 8.6 FINAL - CONTROL 7.6 100% 8.3 <br /> <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 Enaineerina ANALYST ~~^-~~--9 <br />COMMENTS: <br />7/1/93 <br />COMMERCIAL7ESTING 8 ENGINEERING GO. <br />F-48B ~~~ <br />Original Watermarketl For Your Protection <br />