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' SeaCrest Project Number. 399183 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Peabody Coal CDPS No: CO-0000221 OUTFACE: 010 <br />TYPE TEST: Routine: XX Accelerated: Test Species: Cerlodaphnfa du6fa <br />TEST RESULTS: LC50: >100% <br />STATISTICAL METHOD: Probit <br />Test Time 8 Date: Begin: 11:50, May 19, 1999 End: 11:55, May 21, 1999 <br />Dilutions (Percent Eftluertt) <br />It+Fl"l:r <br />Measurements Control <br />0% 12.5% 25% .` 50% if,% 100% XX <br />Np. (~ Start of Test 20 20 20 ' . 20 20 20 XX . <br />No..Live aRer 24 hours ~. 20 ~ ~~ 20 20 ~ ~ :• ~ 20 ~ ~ 20 ~.: ~ 20 )IX <br />No. Live eRer 48 hours 20 20 20 ' 20 : 20 20 XX <br />No. Live aRer 72 hour; XX '. XX XX )0(. XX XX XX <br />No. Live after 86 hours XX XX XX ~ ~ XX )D( XX <br /> <br />Receiving Water Used for Dilution: Yes:. No: XX Total Resid. Chlorine, mg/L: 100%: <0:01 <br />Hardness, mg/L: Receiving Water. NA Effluent: 733 Recon. Water. 90 <br />Alkalinity, mg/L: Receiving Water: NA Effluent: 233 Recon. Water. 49 <br />pH: Initial -Control: 7.8 10D%: 8.5 Final -Control: 7.7 100%: 8.5 <br />Total Ammonia as N, mg/L: Initial - 100°k: <1.0 Final - 100°,6: NA <br />Were All Test Conditions In Conformance With Division Guidelines? Yes <br />LIST DEVIATIONS FROM TEST SPECIFICATIONS: Effluent aerated prior to test setup. Water <br />supersaturated with dissolved oxygen. <br />LABORATORY: THE SEACREST GROUP <br />COMMENTS: _ <br />ANALYST'S NAME(S): Felicia Remington <br />SIGNATURE/DA <br />