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t <br />i <br />III IIIIIIIIIIIII III ~. <br />sss <br />BAS1 N <br />RESOURCES, inc. <br />a subsidiary of ENTECH, Inc. <br />Mr. Joseph Dudash <br />Colorado Division of Minerals and Geology <br />1313 Sherman, Room 215 <br />Denver; CO 80203 <br />August 26, 1994 <br />RE: New Elk Mine; 'Permit C-81-012 <br />NOV C=94-18, C-94-19, and'C-94-20 <br />.Dear Mr. Dudash: <br />,.During the complete inspection of:the-New Elk Mine held during <br />Auguet.,TO- through 12,":three'NOVs were`iesued:. ..These~NOVs were <br />directly related to a greater..thari.l0 year/24:~hour'rain storm which . <br />hit the"~ine~on Auguat.3: .Due-to the unusual and~intenae,.nature of. <br />r. <br />the,event,~ which:'eicgeeded~the design capacity .of control-structures <br />ae,req~uiied:.Sy`.the.New;ETk Mine permit and applicable regulaCions,,_ <br />..:Basin requests "that:DMG, consider the'foTlowiag facts' ia'their. <br />aseeesment:of these`three.NOVs. ~ - <br />•,Events.SurroundinQ the: Problems Cited~in-the NOVs, <br />';The New E1k.Miae=permit require.the structures identified in .- <br />,'the ..NOVs 'to. ,be designed to •handle ,a, 1'0' year/24 hour precipitation <br />event. -For this" .miae;':.such.-a storm .corresponds to''2,9" of <br />precipitation for the entire 24=hou='period. <br />However,' the storm of August 3.exceeded.the.10. year/24 .hour <br />•.precipitation event standard, and for that reason alone caused 'the <br />conditions identified in=the.NOVs.. P, total of 2.99" of rain fell <br />during this event, of which' 2.65" fell during an intense 4 hour <br />period... It~was thin intense•cloudburst.that caused the problems <br />which. were seen during ~tlie inspectioxi. <br />-' Immediately following ,the August 3 ~.etorm, Basin.. began. <br />remedying "the problems caused by the,etorm. Basin 'committed, <br />subatantial,resources'to.this cleanups it .devoted approximately' <br />500 manhours and $20,000 to..cleanup activities from the time of the <br />storm.until the inapection.tour ended. Basin'.pereonnel aad.outeide <br />.contractors worked steadily to remedy the probl-ems, .except where a <br />14300 HighHiay.12 <br />Weston, Cobrado' 81091 <br />RECEIVED (~~s) ass-2z6, <br />Purchasing (719) 868=2768 <br />AUG 291994 Fax (~1s) ass-22~s <br />0!vision a nurerais s Gso;oey <br />