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Mountain Coal Company CO-0038776 SCG Project No.: 304181 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />Permittee: Mountain Coal Company Outfall(s): 017 <br />CDPS No.: CO - 0038776 <br />Test Type: Routine ^ Accelerated <br />Test Species: Daphnia magna <br />Test Results Statistical Begin Begin End End <br />(LC50) Method Test Date Test Time Test Date Test Time <br />89.3% Probit 7/22/04 1545 7/24/04 1600 <br />Dilutions) - % Effluent <br />~~ ,~ti:~,~ <br />' <br />e <br />~ 4COntrol"i" <br />' -;~g~ <br /> <br />` <br />~ '=~ `~t.~ <br />~ s ~-t ~ <br /> <br />X ~~~~* *~ <br />~ `~~,~. ~ <br />k ~,g4, r,~ <br /> <br />% <br />~ ` ~ ~ fix <br />~ .,s? <br />Measu <br />rem <br />nts <br />~~ <br />'~ ~ ~3 <br />0% ~~ r <br />9 / <br />" ~ ° <br />12 <br />5 / <br />~ ~ <br />25%` 50% <br />3 ~'~00°! N <br />r~ <br />°/ <br />: N/A"/off <br />a, <br />, ° <br />.. , <br />a <br />~ ry <br />_ <br />. °,~.:: , <br />q <br />;. <br />. ~ <br /># at Start of Test 20 20 20 20 20 20 <br /># live after 24-hours 20 20 20 20 20 16 <br /># live after 48-hours 20 20 18 16 14 9 <br /># live after 72-hours N/A N/A N/A N/A N/A N/A <br /># live after 96-hours NIA NIA NIA N/A NIA N/A <br />Receiving water used in dilution? Yes ^ No <br />Total Residual Chlorine, mg/1(100%)? <0.01 <br />Hardness (mg/1) -Receiving Water? N/A Effluent? 54 <br />Alkalinity (mg/1) -Receiving Water? N/A Effluent? 2060 <br />Recon. Water? 84 <br />Recon. Water? 64 <br />pH (initiaUfinal) -Control? 8.1/8.1 100%? 8.1/9.0 <br />Total Ammonia as N (mg/1) -Initial? 1.16 Final? 1.64 <br />Were all Test Conditions in Conformance with Division Guidelines? Yes <br />If NO, list deviations from test specifications: <br />Laboratory: The SeaCrest Group, LLC <br />Comments: Effluent was above required 6°C upon receipt at SeaCrest lab. <br />Analyst's Name(s): Amanda Wade, Shannon Phelps <br />No ^ <br /> <br />The SeaCrest Group, LLC 10 <br />