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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 TEST: ROUTINE: X ACCELERATED: <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />DATEl1'IME TEST BEGAN: 12/10/97 3:45 p.m. <br />TEST SPECIES: Fathead Minnows <br />STATISTICAL METHOD USED: None <br />DATE/1'IME TEST COMPLETED: 12/14/97 4:15 p.m. <br />Measurements <br />Dilutions (% Effluent) <br />Control Receiving 6.25% 12.5% 25% ° <br />(0%) Water 50 /° 100 /o <br />loitial 20 na 20 20 20 20 20 <br />Live after 24 hrs 20 na 20 20 20 19 20 <br />after 48 6rs 20 na 20 20 13 12 16 <br />after 72 hrs 20 na 19 18 13 I I 16 <br />after 96hrs 20 na 19 IR 13 II IS <br />• RECEIVING WATER USED FOR DILUTION? (Y of N) N TOTAL RESIDUAL CHLORINE, MG/L: <0.05 <br />HARDNESS, MG/L: Receiving Water t.133• Recon Water 400 Effluenty872 <br />ALKALINITY, MG/L: Receiving Water: 253' Effluent: 328 Recon: 259 <br />PH INITIAL: Control 8.26 100%7.92 FINAL: Control 8.34 100%8.12 <br />T AMMONIA AS N, MG/L: Initial 100%: 0_86 Final 100%: _ <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST THE DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: WA R NVI NMENTAL TESTING INC. ANALYST: LEE RAWLRJGS DATE: 12/23/97 <br />SIGNATURE: ~`~ '' Date: ~Z/Ti~7 <br />COMMENTS. Results for Receivine Water chemistries was taken from Historical data. <br />