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L16 COMMERCIAL TESTING & ENGINEERING GO. <br />,.~. ~~ COLORADO - CDPS W ET TEST REPORT FORM -ACUTE <br />PERMITTEE: Bear Coal Company <br />TYPE TEST: ROUTINE: XX <br />CDPS NO.: CO-0044377 <br />ACCELERATED: <br />OUTFACE: 001 <br />TEST SPECIES: C. chrbia <br />TEST RESULTS: LC,o: 86.6% STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 1015 AM 11/19/02 END 1015 AM 11/21/02 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 1.7% 25% 50% 75% 100% <br /># c 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: ZO 20 20 20 19 1 <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl - (mg/1): N/A <br />HARDNESS (mg/1): RECEIVING WATER: EFFLUENT: 540 RECON WATER: 135 <br />ALKALINITY (mg/I): RECEIVING WATER: EFFLUENT: 1810 RECON WATER: 80 <br />pH: INITIAL: CONTROL 8.4 100% EFFLUENT 8.7 <br />FINAL: CONTROL 8.3 100% EFFLUENT 9.1 <br />TOTAL AMMONIA AS N (mg/1): INITIAL 100%: NIA FINAL 100%: N/A <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: ~„ ~' '( L <br />1~n~Cu <br />COMMENTS: Effluent received discolored (dark amber). Ammonia colorimeter not useful due to effluent <br />discoloration. <br /> <br />t <br />e <br />E <br />4/ 14/99 <br />