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COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE NAME: Western Fuels-Colorado (New Horizon Mine) NPDES NO: OUTFACE NO: 007 <br />TYPE OF TEST: ROUTINE: X ACCELERATED: _ TEST SPECIES: Ceriodaphniadubia <br />50%MORTALITYTEST: X Pass Fail LC50: >I00%. <br />STATISTICAL METHOD USED: None <br />DATE/TIME TEST BEGAN: 927/97 5:40 p.m. DATE/f1ME TEST COMPLETED: 929/97 5:30 p.m. <br />MEASUREMENTS <br />Dilutions (% Effluent) <br />Control Receivin <br />(0%I Waterg 6.25% 12.5% 25% 50% 100% <br />Initial 19 na 19 20 19 20 20 <br />Alive after 24 hrs 20 na 20 20 20 20 20 <br />aRer 4A hrs 20 na 20 20 20 20 19 <br />RECEIVING WATER USED FOR DILUTION? (Y of N) N TOTAL RESIDUAL CHLORINE, MG/L: <0.05 <br />HARDNESS, MG/L: Receiving Water 1.133• Ellluent 1560 Recoil Water 420 <br />ALKALINITY, MC/L: Receiving Water 352' Effluent 334 Recon Water 268 <br />PH: INITIAL-Contro18.45 100%8.57 FINAL- Con[rol 7.52 100% 8.1I <br />T AMMONIA AS N, MG/L: Initial 100% 0.19 Final 100% _ <br />WERE ALLTEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST THE DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: AT & ~ . VIRONMENTAL TESTING INC. ANALYST: Lee Rawlines DATE: 102/97 <br />SIGNATURE: Gi~2v. G <br />COMMENT Resul[s for Receiving Waler Chemistries was taken for Historical data. _ <br />