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<br />LTA COMMERCIAL TESTING i ENGINEERINGCO. <br />6MLE 1M~ <br />COLORADO - CDPS W ET TEST REPORT FORM -ACUTE <br />PERMITTEE: Twentymile Coal Co. CDPS NO.: CO-0036684 OUTFACE: FCT-#62 <br />TYPE TEST: ROUTINE: XX ACCELERATED:- TEST SPECIES: C. dubia <br />TEST RESULTS: LCso: > 100% STATLSTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 0900 AM 07/03/02 END 0850 AM 07/05!02 <br />DII,UTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 12.5% 25% 50% 7$% 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 19 18 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl " (mgll): ~.2 <br />HARDNESS (mgfl): RECEIVING WATER: EFFLUENT: 2835 RECON WATER: l IS <br />ALKALINITY (mg/l):RECEIVINGblATER EFFLUENT: 220 RECON WATER: 90 <br />pH: INITIAL: CONTROL 8.5 ]00% EFFLUENT 8.0 <br />FINAL: CONTROL 8.3 ]00% EFFLUENT 8.5 <br />TOTAL AMMONIA AS N (mg/1): INITIAL 100%: <] .0 FINAL 100%: <I.0 <br />WERE ALL TEST CONDTITONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: <br />COMMENTS: <br />/~ <br />4/]4/99 <br />