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COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />~ERMITTEE NAME: Western Fuels-Colorado (New Horizon Mine) NPDES NO: OUTFALLNO: 007 <br />TYPE OF TEST: ROUTINE: X ACCELERATED: _ TEST SPECIES: Ceriodaohnia dubia <br />50%MORTALITYTEST: X Pass Fail LC50: >l00%. <br />DATE/i'IME TEST BEGAN: 6/18/97 8:30 p.m. <br />STATISTICAL METHOD USED: None <br />DATE/I'IME TEST COMPLETED: 620/97 8:30 p,m. <br />MEASUREMENTS <br />Dilutions (%EHlueat) <br />Coatrol Receivia <br />g 6.25% I2.5% 25% 50% 100% <br />(0%) Water <br />Initial 20 as 20 20 20 20 20 <br />Alive after 24 hrs 20 as 20 20 20 20 20 <br />RECEIVING WATER USED FOR DILUTION? (Y of N) N TOTAL RESIDUAL CHLORINE, MG/L: <0.05 <br />HARDNESS,MG/L: ReceiviogWater 1,133• Efllueot 1,918 RecooWater 428 <br />ALKALINITY, MG/L: Recciviag Water 352• Efllueot 331 Recon Water 294 <br />PH: INITIAL-Coatrol 8.38 100% 7.71 FINAL- Control 8.35 100% 8.07 <br />AMMONIA AS N, MG1L: -aitia1100% 0.14 Fioa1100% _ <br />WERE ALLTEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST THE DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: <br />ANALYST: Lee Rawliaes <br />DATE: 623/97 <br />SIGNATURE: <br />COMM <br /> <br />