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PERMITTEE NAMEIADDRESS (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, Environmental Supervisor <br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) MAJOR <br />DISCHARGE MONITORING REPORT (DMR) (SUER JC) <br />F - FINAL ROUTT <br />ACUTE WET TESTING FOR 005A <br />000027154 005 W ? Check here if No Discharge <br />PERMIT NUMBER DISCHARGE NUMBER NOTE: Read Instructions before completing this form <br />MONITORING PERIOD <br />YEAR MO DAY YEAR MO DAY <br />10 04 01 TO t0 06 30 <br /> QUANTITY OR <br />PARAMETER <br />E <br />LOADING <br />QUAL <br />ITY OR CONCENTRATI <br />ON <br />FREQUEN <br /> <br />LC50 STATRE 48HR ACU *.S <br />SAMPLE <br />AVERAGE <br />****** <br />MAXIMUM <br />•••*** <br />UNITS <br />MINIMUM <br />AVERAGE <br />MAXIMUM <br />UNITS <br />NO. <br />EX CY <br />OF <br />ANALYSIS SAMPLE <br />TYPE <br />D. MAGNA MEASUREMENT > 100 (23) <br />TAM3C 1 0 PERMIT ****** <br />**"' 0 1/91 Grab <br /> <br />EFFLUENT GROSS VALUE <br />REQUIREMENT * ""'* 100.0001 <br />MN VALUE PERCENT <br /> QTRLY GRAB <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />NAME/TITLE PRINCIPAL EXECUTIVE OFFICER I Certify under penalty of law that this document and all attachments were prepared under TELEPHONE DATE <br />my direction or supervision in accordance with a system designed to assure that qualified <br />Brian A. Watterson, P.G. personnel properly gather and evaluate the information submitted. Based on my inquiry of 970 870 - 2750 <br />Geologist the person or persons who manage the system, or those persons directly responsible for SIGNATURE OF PRINCIPAL 0? <br />gathering the information, the information submitted is, to the best of my knowledge and belief, OFFICER OR AUTHORIZED AGENT AREA CODE NUMBER YEAR MO DAY <br />true, accurate, and complete. I am aware that there are significant penalties for submitting <br />TYPE OR PRINTED false information, including the possibility of fine and imprisonment for knowing violations. <br />COMMENTS AND EXPLANATION OF ANY VIOLATIONS (Reference all attachments here) <br />SEE PART I.A.2. FOR DETAILS OF TEST PROCEDURE. REPORT LOWEST DILUTION (% EFFLUENT) WHICH IS LETHAL TO 50 % OF TEST ORGANISMS (LC50) AND ATTACH ACUTE TOXICITY TEST REPORT FORM TO DMR. <br />COPIES OF ALL INFORMATION MUST BE SENT TO EPA. <br />EPA Form 3320-1 (REV 3/99) Previous editions may be used <br />PAGE 1 OF 1