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COLORADO -CDPS WET TEST REPORT FORM -CHRONIC <br />PERMITTEE: Twenrymile Coal Co. CDPS NO.: 00.0034142 OUTFACE: 5 D <br /> <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: P. promelas <br />TEST RESULTS LETHALITY GROWTH STATISTICAL METHOD <br />Concentration with Statistical Difference >1005~0 >100% Steel's Man -One/Dunnet: s i <br />PasslFail Pass NIA <br />ICS., Point Estimate >100°,'0 >100% Bootstrap <br />PasslFail Pass N/A <br />TEST TIME & DATE START 4/10/2007 1200 END 4!17!2007 1200 <br />DILUTION f°io EFFLUENT) <br />MEASUREMENTS ~ CONTROL 12.5% 25% 50% 75% 100% <br />Oay 1 % Survival i 100 100 100 100 100 i00 <br />Day 2 100 100 100 100 100 97.5 <br />Da 3 100 100 100 100 95 97.5 <br />Day 4 100 100 100 100 95 97.5 <br />Da 5 100 100 100 100 97.5 92.5 <br />Da 6 100 100 100 97.5 97.5 92.5 <br />Day 7 97.5 100 100 97.5 97.5 90 <br /> <br />7 Da Mean Dry Wei ht 0.372 0.354 0.352 0.364 0.368 0.350 <br /> <br />pH (MaximurNMinimum) 8.3/7.8 8.2lL9 8.3/7.2 8.Sf1.9 8.517.9 8.717.8 <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CC (mgA): <0.1 <br />HARDNESS (mp/11: REC'V WATER: EFFLUENT: 650 RECON WATER: 80 <br /> <br />ALKALINITY Ls/I~_ REC'V WATER: EFFLUENT: 644 RECON WATER: 80 <br /> <br />TOTAL AMh10NIA~g11~ INITIAL 100°~0: <0.1 FINAL.100%: <0.1 <br />_ <br />WERE ALL TEST CONDITIONS IN CONFORMANCE Vti'ITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS NORTH AMERICA INC. ANALYST: KH/KW <br />