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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: ROl1TINE: X ACCELERATED: TEST SPECIES: Ceriodaohnia dubia <br />50% MORTALITY TEST: X Pass Fail LC50: >I00%. <br />DATE/1'IME TEST BECAN: 12/10/97 3:00 p. m. <br />STATISTICAL METHOD USED: None <br />DATE/TIME TEST COMPLETED: 12/12/97 4:00 p.m. <br />MEASUREMENTS <br />Dilutions (% Effluent) <br />Control Receiving ° ° ° ° ° <br />(0%) Water 6.25 /0 12.5 /e 25 /0 50 /0 100 /o <br />Initial 20 oa 20 20 20 20 20 <br />Alive after 24 6rs 19 na 19 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 1,872 Recon Water 400 <br />ALKALINITY, MG/L: Receiving Water 352* Effluent 328 Recoe Water 259 <br />PH: INITIAL- Control 8.26 100% 7.92 FINAL- Control 8.32 100% 7.98 <br />•T AMMONIA AS N, MG/L: loitial 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: W ER & ENVI ONMENTAL TESTING INC. ANALYST: Lee Rawlings DATE: 12/23/97 <br />SIGNATURE: / 2tJ ~G/ ~ <br />COMMEN :Results for Receiving Water Chemistries was taken for Historical data. <br />l J <br />