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COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE NAME: Western FuelsColorado (New Horizon Mine) NPDES NO: OUTFACE NO: 007 <br />• TYPE OF TEST: ROUTINE: X ACCELERATED: TEST SPECIES: Ceriodaphnia dubia <br />50% MORTALITY TEST: X Pass Fail LC50: >!00%. STATISTICAL METHOD USED: None <br />DATE/TIME TEST BECAN: 3/17/98 1:45 p. m. DATE/TIME TEST COMPLETED: 3/19/98 2:30 p.m. <br />MEASUREMENTS <br />Dilutions (% Effluent) <br />Control Receiving 6.25% 12.5% 25% 50% 100% <br />(0%) Water <br />Initial 20 oa 20 20 20 20 20 <br />Alive after 24 hrs 20 na 20 20 20 20 20 <br />ter 4R hrs 20 na 20 20 20 20 20 <br />RECEIVING WATER USED FOR DILUTION? (Y of N) N TOTAL RESIDUAL CHLORINE, MG/L: <0.05 <br />HARDNESS, MC/L: Receiving Water 1,133* Effluent 11452 Recon Water 412 <br />ALKALINITY, MG/L: Receiving Water 352* Effluent 256 Recon Water 262 <br />PH: INITIAL- Control 8.39 100% 7.95 FINAL- Control 8.39 100% 8.1I <br />• T AMMONIA AS N, MG/L: Initial 100% 0.06 Final 100% <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST THE DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: <br />SIGNATURE: <br />COM <br />ANALYST: Lee Rawlioas DATE: 3/23/97 <br />L J <br />