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<br />COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />PERMITTEE: Pittsburgh and Midway Mininq CDPS NO. CO-0032638 OUTFACE 007 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C. dubia <br />TEST RESULTS: LC50: >100 % STATISTICAL METHOD: Binomial <br /> <br />TEST TIME & DATE: BEGIN 10:25 AM 3 / 10 / 98 END 10:10 AM 3 / 12 / 98 <br /> <br /> DILUTIONS (% EFFLUENT) <br />MEAS UREMENTS CONTROL(0%) 12.5 °s 25 % 59 % 75 % 100 % <br />N0. @ START OF TEST: 20 20 20 20 20 20 <br />N0. LIVE AFTER 24 HRS: 20 20 20 20 20 20 <br /> AFTER 48 HRS: 20 20 19 20 20 20 <br /> AFTER 72 HRS: <br /> AFTER 96 HRS: <br />RECEIVING WATER USED FOR DILUTION? NO TOT. RESID. CHLORINE, MG/L: 100% <0.1 <br />HARDNESS, MG/L: RECEIVING WATER 155 EFFLUENT 1910 RECON WATER 120 <br />ALKALINITY, MG/L: RECEIVING WATER 105 EFFLUENT 285 RECON WATER 45 <br /> <br />PH: INITIAL - CONTROL 7.7 100% 7.7 FINAL - CONTROL 8.2 100% 8.3 <br />T. AMMONIA AS N, MG/L: 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 /> <br />LABORATORY: Commercial Testing & Encrineering ANALYST <br />COMMENTS: <br />COMMERCIALTESTING & EN GINEERINO CO. <br />4~ Ltd <br />~ginal Watermarketl For Vour Protection <br />7/1/93 <br />