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~l ~~~ COMMEHCIAI TESTING 8 ENGINEEEING CO. <br />1 since iawr <br />n NARRATIVE <br /> <br />t <br />` <br />• CLIENT <br /> Western Fuels -Colorado, New Horizon Mine, P.O. Box 628, Nucla, CO 81424 <br />_ DATE OF REPORT <br /> October 20, 2002 <br /> • PERMIT AND SAMPLE INFORMATION <br /> NPDES permit #: CO-0000213 <br /> Type of sample: Effluent Grab <br />i Date and time of sample(s): 10/14/02 0930 <br />' Date and time oftest start: 10/15/02 1200 <br />l Dilution water: Reconstituted Laboratory Water <br />° <br /> Receiving temperature(s): 0.0 <br />C <br />~ <br />~ • TEST ORGANISMS <br /> Daphnia magna Age: <24 hrs <br />(' 1 <br />\, Fathead Minnow Age: 7 days <br /> • PROCEDURE <br />Acute, 48 and 96 hour bioassays as outlined in the most recent protocols specified by the <br />Water Quality Control Division of the Colorado Department of Health (1998). <br />n <br />3 DISCUSSION <br />New Horizon Mine discharge site 007 was not acutely toxic to either fathead minnow or <br />d Daphnia magna survival. Therefore, Western Fuels -Colorado is cwrently in compliance <br />with the acute WET portion of its Colorado State Discharge Permit for the fourth quarter of <br />2002. <br />I _ ~l <br />r Fsr <br />