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<br />~~~ II~~I~II~I~~~~I~ <br />sss <br />Region VIII Guidance for Acute Whole Effluent Reporting <br />~ERMITTEE NAME: Western Fuels Co. SITE ID: New Horizon Mine OUTFACE NO: 007 <br />50% MORTALITY TEST: X Pass Fail LC50: >100%. <br />TEST (AnimaUAge): Fathead Minnow, 7 days. SAMPLE (Dale//ype): 3!20/00 Grab. <br />DATE/1'IME TEST BEGAN: 3/21/00 11:30 a.m. DATE/I'IME TEST COMPLETED: 3!25/00 12:00 p.m. <br />Survival Totals <br /> Dilutions (% Emnent) <br /> Recon Receiving <br /> ti.25% 12.5% 25% o <br />50 /° e <br />100 /o <br /> Water Water <br />lnitlal 20 na 20 20 20 20 20 <br />24 hrs 20 na 20 20 20 20 20 <br />48 hrs 20 na 20 20 20 20 20 <br />72 hn i9 na 20 20 20 20 20 <br />96 hrc 19 na 20 20 20 20 20 <br />Max/Min Values <br /> Dilutions (% Emnent) <br /> Recon Receiving ° ° <br /> 6.25% 12.5% 25% 50% 100% <br /> Water Water <br />Dissolved Oxygen 8.2/7. I na 8.0/6.9 8.3/6.9 8.3/6.6 8.616.5 9.2/6.8 <br />Temneratnre (°Cl 70.0/197 na 20.0/192 20.0/19.2 20.0/142 20.0/19.2 20.0/192 <br />i <br />Receiving Water used for Dilution? (Y of N) N <br />Hardness, mg/L CaCO3: Receiving Water na Recon Water 184 Effluent ly4 <br />lnitlal Total Residual Chlorine, mg/L CI2 100% Effluent: <0lOS <br />Reconstituted pH: Initial 8.33 After 24 hours 8.15 <br />Receiving Water pH: Initial na After 24 hours na <br />pH in 100% Emnent: Initial 7.95 After 24 hours 7.97 <br />Ammonia as N, mg/L: 100% Emnent .59 Receiving Water na Recon <0OS <br />Conductivity, umhos/cm: 100% Emnent 1 310 Receiving Water na <br />Alkalinity, mg/L CaCO3: 100% Emnent 388 Receiving Water na <br />Analyst: Lee Rawlin La oratory: Water & Environmental Testine. Inc. <br />(Si)gnature~/i ~ Date: .3 z- Z~U <br />~w6mmeots: <br />