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COMMERCIAL TEBTINO & ENGINEERING CO. <br />aiw .q~ <br />COLORADO -CDPS WETTEST REPORT FORM -ACUTE <br />j PERMITT'EE: Twentytnile Coal Comnany . CDPS NO.: CO-0036684 OUTFACE: FCT-Site #62 <br />TYPE TEST: ROUTINE: _ ACCELERATED: XX TEST SPECIES: C. dubia <br />TEST RESULTS: LCD: 48.4% ST:4TISTICAL METHOD: Trimmed Spearrrtan-Karber <br />l <br />TEST TIME & DATE: BEGIN 0830 AM. 03%04/03 END 0830 AM 03!06/03 <br />DIIATIONS (% 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 19 13 10 <br /># ALIVE AFTER 48 HRS: 20 20 19 10 3 1 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl - (mg/1): <0,1 <br />HARDNESS (mg/1): RECEIVING WATER: EFFLUENT: 2135 RECON WATER: 110 <br />ALKALINITY (mg/l):RECEPJING WATER: EFFLUENT: 505 RECON WATER: 90 <br />pH: IlVIITAL: CONTROL $.5 100% EFFLUENT 7.8 <br />FINAL: CONTROL 8.0 100°/a EFFLUENT 8.1 <br />TOTAL AMMONIA AS N (mg/1): 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: COMMERCIAL TESTING & ENGINEERING ANALYST: (~c~cu,. <br />COI.~IlvIEENTS: Accelerated test #2 <br />4/14/99 <br />