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COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />1 <br />+PERMITTEE:Pittsburgh and <br />Midway Mining CDPS NO. CO-0032638 OUTFACE <br />007 <br />(TYPE TEST: ROUTINE: xx ACCELERATED: - TEST SPECIES: P. promelas <br />I <br /> TEST RESULTS: LC50: >100 % STATISTICAL METHOD: Probit <br />~ ~ <br />(TEST TTME & DATE: BEGIN 11:40 AM 11 / 3 / 98 END 11:40 AM 11 / 7 / 98 <br /> <br /> DILUTIONS (% EFFLUENT) <br />MEASUREMENTS CONTROL(0%) 12.5 % 18 % 50 % 75 % 100 % <br />~NO. @ START OF TEST: 40 40 40 40 40 40 <br />NO. LIVE AFTER 24 HRS: 40 39 40 40 40 3~ <br />' AFTER 48 HRS: 40 39 40 40 40 39 <br />AFTER 72 HRS: 40 39 40 40 40 39 <br />' AFTER 96 HRS: 40 39 40 40 40 ~_ <br />RECEIVING WATER USED FOR DILUTION? NO TOT. RESID. CHLORINE, MG/L: 100% <0.1 <br />'HARDNESS, MG/L: RECEIVING WATER 145 EFFLUENT 2510 RECON WATER 115 <br />ALKALINITY, MG/L: RECEIVING WATER 115 EFFLUENT 320 RECON WATER 90 <br />PH: INITIAL - CONTROL 8.0 100% 7.4 FINAL - CONTROL 8.0 100% 7.7 <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 & Encrineerinc~ ANALYST <br />' COMMENTS <br />COMMERCIAL 7E 571N0 6 EN OINEE RING CO. <br />7/1/93 <br />~F.~ Ltd <br />Original Watermarketl Far Vour Protection <br />