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SGT <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE• Twent ymile Coal Com pany CDPS NO.: CO-0036684 OUTFACE: 62 FCT <br /> <br />TYPE TEST: ROUTINE: XX ACCELERATED: _ SPECIES: C. dubia <br /> <br />TEST RESULTS: LCD: 72.8 STATISTICAL METHOD: Binomiau TdmrradSoeamwn-1(,~rpgr <br />TEST TIME 8 DATE: BEGIN: 1500 10!25/06 END: 1400 10127/06 <br /> <br /> DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 12.5% 25% 50% 75% 100% <br /># START OF TEST: <br /># ALIVE AFTER 24 HRS: <br /># ALIVE AFTER 48 HRS: 20 <br />19 <br />19 20 20 <br />20 20 <br />19 20 20 <br />20 <br />19 20 <br />19 <br />9 20 <br />19 <br />4 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CI' (mg/L) : <0.1 <br />HARDNESS (mg/L): RECEIVING WATER: EFFLUENT: 1790 RECON WATER: 85 <br />ALKALINITY (mg1L): RECEIVING WATER: EFFLUENT: 450 RECON W ATER: 63 <br />pH; INITIAL: CONTROL 8.2 100% EFFLUENT 8.0 <br />FINAL: CONTROL 7.8 100% EFFLUENT 8.1 <br />TOTAL 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 N0, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS North America Inc. ANALYST: Sto~ Grimmest David N uyen <br />COMMENTS: 04!08!03 <br />