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COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />PERMITTEE: Twentymile Coal Company CDPS NO.: CO-0036684 OUTFALL: 62 FCT <br />TYPE TEST: ROUTINE: ACCELERATED: XX #2 SPECIES: Pimephales promelas <br />TEST RESULTS: LC50: >100 STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN: 12:10 06/18/08 END: 12:10 06/22/08 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 12.5% 25% 50% 75% 100% <br /># START OF TEST: 40 40 40 40 40 40 <br /># ALIVE AFTER 24 HRS: 39 40 38 40 39 39 <br /># ALIVE AFTER 48 HRS: 39 40 37 40 38 38 <br /># ALIVE AFTER 72 HRS: 38 39 36 40 38 37 <br /># ALIVE AFTER 96 HRS: 37 39 35 .40 37 37 <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL Cl " (mg/L) : <0.1 <br />HARDNESS (mg/L): RECEIVING WATER: EFFLUENT: 1895 RECON WATER: 102 <br />ALKALINITY (mg/L): RECEIVING WATER: EFFLUENT: 422 RECON WATER: 102 <br />pH: INITIAL: CONTROL 7.9 100% EFFLUENT 8.1 <br />FINAL: CONTROL 7.9 100% 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 NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS North America Inc <br />ANALYST: Green, Holliday. Pauley <br />I <br />COMMENTS: Accelerated Acute Test - Sample #2 <br />04/08/03