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~: - <br />~~~ COMMERCIAL TESTING d ENGINEERING GO. <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMII'TEE: Twentymile Coal Company CDPS NO.: CO-0027] 54 OUTFACE: 005" Pond D <br />TYPE TEST: ROUTINE: XX ACCELERATED: _ TEST SPECIES: D. magna <br />TEST RESULTS: LCso: > ] 00% STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN l 130 AM 09/] 7/02 END 1130 AM 09/19/02 <br />DII.UTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 12.5% 25% 50% 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 19 20 19 20 19 <br /> <br /> <br />RECEIVING WATER USED FOR DII,UTION? NO TOTAL RESID. Cl " (mg/1): <0.1 <br />HARDNESS (mg/1): RECEIVING WATER EFFLUENT: 1125 RECON WATER 230 <br />ALKALINITY {mg/1):RECEIVINGWATER: EFFLUENT: 295 RECONWATER ]65 <br />pH: INITIAL: CONTROL 8.7 100% EFFLUENT 8.4 <br />FINAL: CONTROL 8.5 100% EFFLUENT 8.7 <br />TOTAL AMMONIA AS N (mg/1): INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDTTIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />1F NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: /~ <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: ~ /~ <br />COMMENTS: <br />4/14/99 <br />