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SG9 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Twentvmile Coal Company CDPS NO CO-0036684 OUTFACE: 62 FCT <br />TYPE TEST: ROUTINE: ACCELERATED: XX #2 SPECIES: Cenodaphnia dubia <br />TEST RESULTS: LC~n: 90.9 STATISTICAL METHOD:Trimmed Spearman•Karber <br />TEST TIME & DATE: BEGIN: 1300 11/1612006 END: 1200 1 1118/2006 <br />DILUTIONS (% EFFLUENT} <br />MEASUREMENTS 0% 12.5°/s 25% 50% 75% 100'/0 <br /># a START OF TEST 20 20 20 20 20 20 <br /># ALIVE AFTER 24 HRS: 20 20 20 ;' <br />~ 20 20 <br /># ALIVE AFTER 48 HRS: 18 20 20 _ 18 5 <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CI (mgiL) : <0.1 <br />HARDNESS (mg/L): RECEIVING WATER: EFFLUENT: 1460 RECON WATER: 96 <br />ALKALINITY (mglL}: RECEIVING WATER: EFFLUENT: 450 RECON WATER. 54 <br />pH: INITIAL: CONTROL 8.1 100°'o EFFLUENT 8.0 <br />FINAL: CONTROL 7.7 100% EFFLUENT 8.1 <br />TOTAL AMMONIA AS N (mg.~Ll 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: SGS North America Inc ANALYST: Sto co Grlmmett N u en Davis <br />COMMENTS: Accelerated Acute Test -Sample #2 <br />04/08103 <br />