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' COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />'PERMITTEE: Pittsburgh and Midway Mining CDPS NO. CO-0032638 OUTFACE 004 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C. dubia <br />TEST RESULTS: LC50: X100 % STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 10:40 AM 7 / 29 / 98 END 10:00 AM 7 / 31 / 98 <br />DILUTIONS (% EFFLUENT) <br />ASUREMENTS CONTROL(0%) 12.5 % 25 % 59 % 75 % 100 <br />0. Q START OF TEST: 20 20 ~ 20 20 20 <br />~0. LIVE AFTER 24 HRS: 20 20 20 20 19 20 <br />' AFTER 48 HRS: 19 19 20 19 16 19 <br />AFTER 72 HRS: <br />r AFTER 96 HRS: <br />RECEIVING WATER USED FOR DILUTION? NO TOT. RESID. CHLORINE, MG/L: 100% <0.1 <br />'HARDNESS, MG/L: RECEIVING WATER 170 EFFLUENT 2420 RECON WATER 110 <br />KALINITY, MG/L: RECEIVING WATER 130 EFFLUENT 185 RECON WATER 90 <br />~ <br />PH: INITIAL - CONTROL 8.3 100% 7.6 FINAL - CONTROL 8.6 100% 8.5 <br />,T. AMMONIA AS N, MG/L: INITIAL - 100% <1.0 FINAL - <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? <br />'IF N0, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: Commercial TestincZ& Engineering ANALYST~~"'-~LY~ ~~"~ ?~~i <br />'COMMENTS: <br />COMMERCIALTESTING b ENGINEERING CO. <br />Watermarked For Vour Protection ~~~ <br />100% <1.0 <br />YES <br />7/1/93 <br />