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COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />~ERMITTEE NAME: Western Fuels-Colorado (New Horizon Mine) NPDES NO: OUTFACE NO: 001 <br />TYPE TEST: ROUTINE: X ACCELERATED: _ TEST SPECIES: Fathead Minnows <br />50% MORTALITY TEST: X Pass _ Fail LC50: >100%. STATISTICAL METHOD USED: None <br />DATE/I'IME TEST BEGAN: 3/04/97 7:30 p.m. DATE/I'IME TEST COMPLETED: 3/08/97 8:15 p.m. <br />Measurements <br />Dilutions (%EtBuent) <br />Control Receiving 6.25% 12.5% 25% 50% 100% <br />(0°/.) Water <br />loitial 20 na 20 20 20 20 20 <br />Live after 24 hrs 20 na 20 20 20 20 20 <br />after 48 hrs ~ 20 na 20 20 20 ~ 20 20 <br />after 72 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 1.113• Recon Water 441 Effluent 2.183 <br />ALKALINITY, MG/L: Receiving Water: 412• Effluent: 294 Recon: 372 <br />•H INITIAL: Control 8.47 100% 8.08 FINAL: Control 8_41 100%8.018 <br />T AMMONIA AS N, MG/L: Initial 100%: 0.05 Final 100%: <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST TAE DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: W 'f`E ENV ONM NTAI.TESTING INC. ANALYST: LEERA~W/L,I,N/GAS DATE: 3/11/97 <br />SIGNATURE: ' ~W Date: -~/~/~-! 7 <br />COMMENT Data from Recieving water taken from historical records <br />• <br />