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COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />' PERMITTEE: Twentymlle Coal Company CDPS NO.: 00.0027154 OUTFACE: 007 <br />' TYPE TEST: ROUTINE: XX ACCELERATED: _, SPECIES: D. magna <br />TEST RESULTS: LCw: >100°° STATISTICAL METHOO: Binomial <br />I <br />TEST TIA1E & DATE: BEGIN: 1120 AM 03723/04 END: 1130 AM 03/25/04 <br />' DILUTIONS (% EFFLUENT) <br />1 <br />1 <br />MEASUREMENTS 0°/i 12.5'/ 25% 5076 75% 100% <br /># START OF TEST: 20 20 20 20 20 20 <br /># ALIVE AFTER 24 HRS: 20 20 20 20 20 20 <br /># ALIVE AFTER 48 HRS: 20 20 20 20 20 20 <br /># ALIVE AFTER 72 HRS: <br /># ALIVE AFTER 96 HRS: <br />' RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CI ' (mg/l): +°0.1 <br />HARDNESS (mg/l): RECEIVING WATER: EFFLUENT: 675 RECON WATER: 190 <br />ALKALINITY (mgn): RECEVING WATER: EFFLUENT: 110 RECON W ATER: 155 <br />1 pH: INITIAL: CONTROL 8.0 100% EFFLUENT 8.3 <br />FINAL: CONTROL 8.4 100% EFFLUENT 8.2 <br />' TOTAL AMMONIA AS N (mgA): INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />1 IF N0, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />r LABORATORY: SGS MINERALS SERVICES DNISION: ~ pz(y'(~ <br />' COMMENTS: <br />04i 08/03 <br />1 <br />6 <br />rpe <br />