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PERMITTEE NAME /ADDRESS (includes Facility Name /Location if Different) <br />NAME TWENTYMILE COAL COMPANY <br />ADDRESS MINES 1 & 2 SOUTH, & ECKMAN PK <br />29515 RCR #27 <br />FACILITY LOCATION OAK CREEK, CO 80467 <br />ATTN: Mr. Jerry Nettleton, Env. Manager <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) MINOR <br />DISCHARGE MONITORING REPORT (DMR) (SUBR JC) <br />F - FINAL ROUTT <br />ACUTE WET TESTING FOR 001A <br />C00042161 001 W K] Check here If No Discharge <br />PERMIT NUMBER DISCHARGE NUMBER NOTE: Read Instructions before completing this form <br />MONITORING PERIOD <br />YEAR MO DAY I YEAR MO DAY <br />13 01 01 TO 1 13 01 31 <br />PARAMETER <br />QUALITY OR LOADING <br />QUALITY OR CONCENTRATION <br />NO. <br />EX <br />FREQUENCY <br />OF <br />ANALYSIS <br />SAMPLE <br />TYPE <br />AVERAGE <br />MAXIMUM <br />UNITS <br />MINIMUM <br />AVERAGE <br />MAXIMUM <br />UNITS <br />LC50 STATRE 48HR ACU <br />D. MAGNA <br />TAM3C 1 0 0 <br />EFFLUENT GROSS VALUE <br />SAMPLE <br />MEASUREMENT <br />* *' * ** <br />* * ** <br />* * * * ** <br />* * * ** <br />* * * * ** <br />(23) <br />PERCENT <br />PERMIT <br />REQUIREMENT <br />" "" <br />' * "" <br />100.0001 <br />MN VALUE <br />" "" <br />" "" <br />QTRLY grab <br />NAMEITITLE PRINCIPAL EXECUTIVE OFFICER <br />I Certify under penalty of law that this document and all attachments were prepared under <br />my direction or supervision in accordance with a system designed to assure that qualified <br />personnel properly gather and evaluate the information submitted Based on my inquiry of <br />the person or persons who manage the system, or those persons directly responsible for <br />gathering the information, the information submitted is, to the best of my knowledge and belief, <br />true, accurate, and complete I am aware that there are significant penalties for submitting <br />false information, including the possibility of fine and imprisonment for knowing violations <br />'y <br />TELEPHONE <br />DATE <br />Brian A Watterson, P.G. <br />Geologist <br />970 870-2750 <br />SIGNATURE OF PRINCIPAL <br />OFFICER OR AUTHORIZED AGENT <br />AREA CODE NUMBER <br />YEAR <br />MO <br />DAY <br />TYPE OR PRINTED <br />V VIVIIVILII I J MINU -LMINM I 1 JIN Ur- MINT V IULH I IUINJ (rrererence an arracnmenrs nere/ <br />SEE PART I A 3, PP 5 -7 FOR DETAILS OF TEST PROCEDURE REPORT LC50 - STATISTICAL POINT ESTIMATE WHICH IS LETHAL TO 50% OF TEST ORGANISMS (LC50) AND ATTACH ACUTE TOXICITY TEST REPORTFORM TO DMR <br />TOXICITY TEST REORT FORM TO DMR COPIES OF ALL INFORMATION MUST BE SENT TO EPA <br />EPA Form 3320 -1 (REV 3/99) Previous editions may be used PAGE 1 OF 1 <br />00005/010129 -1126 <br />