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COLORADO - CDPS WET TEST REPORT FORM - ACUTE <br />~r <br />PERMITTEE: Pittsburgh and Midway Mining CDPS N0. CO-0032638 OUTFACE 007 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C. dubia <br /> <br />^ <br />TEST RESULTS: LC50: >100 % STATISTICAL METHOD: Probit <br />'~ <br />' TEST TIME & DATE: BEGIN 10:55 AM 11 / 3 / 98 END 10:10 AM 11 / 5 / 98 <br />DILUTIONS (% EFFLUENT) <br />r MEASUREMENTS CONTROL(0%) 12.5 % 18 % 50 % 75 % 100 <br />~NO. CO START OF TEST: 20 20 20 20 20 20 <br />NO. LIVE AFTER 24 HRS: 20 20 20 20 20 20 <br />AFTER 48 HRS: 20 20 19 19 20 15 <br />AFTER 72 HRS: <br />AFTER 96 HRS: <br />RECEIVING WATER USED FOR DILUTION? NO TOT. RESID. CHLORINE, MG/L: 100% <0.1 <br /> <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 8.2 100% 8.1 <br />T. AMMONIA AS N, MG/L: INITIAL - 100% <1.0 FINAL - 100% c1.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />~ <br />IF N0, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: Commercial Testinc~& Engineering ANALYST C~"""' '~'~`-`~`-~ <br />',COMMENTS <br />i~ <br />~~ <br />~'Or~al Watermarketl For Your Prolecticn <br />COMMERCIAL TE571NG & ENGINEERING CO. <br />LTA <br />7/1/93 <br />