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<br />7 <br />6 Sep. '94 Mine Safety and Health Administration (MSHA) memorandum discussing COM, lnc. <br />tailings dam; notes tear in liner material, probable marginal containment of 6-hr. 1Q()- <br />year storm (approx. 3.6') but not considered prudem engineering practice. °'Ihis office <br />recommends a minimum freeboazd during a design storm of at least 3 feet." <br />Recammendatioas include diversion ditch repair and enlargement, ase of a larger <br />decant pipe (2' %s not big enough), repair of tears in tJtt liner system, widening of <br />dam crest W more than 9 feet when embankment is raised to provide freeboard. <br />21. Sep. '94 NOV and C&1]O to COM, Inc. and Mi Vida Enterprises; included finding tbat, "On <br />September (sic, should be August) 14, 1994, mill tailings were spilled on the ground <br />from two locations at the mill building and from overtopping the ttiling~ <br />impomdmeru. " Board Order was to Cease and Desist operation of the mill and tailings <br />impoundment until corrective actions are completed. Corrective actions are: Submit a <br />new permit application to the Division by November 1, 1994; Obtain an approved <br />permit application by December 1, 1994. Assessed civil fine of 5450. <br />2:L Oct. '94 COME prepares an Annotated Cantentr Litt of a submiaal by the BCLUD staff to the <br />Boulder County Boazd of Adjustment is support of Docket N AP 94-13, Anpg:! rge * in <br />allowa_hle ~~*+ces of ore for Lhe ld Hill Mill, hearing date November 2, 1994 <br />(continued to December 7, 1994 and heard on that date). This list sLmmari~gs 115 pages <br />of BCLUD information oa the histcay of the Gold Hill Mill as it pertains to asserted <br />violations of Boulder County Zoning regairemeats. COM, lnc's appeal was <br />denied. <br />2 Dec. '94 NOV from MLRD to COM, lnc. relating to non-receipt of water sample results (see 17 <br />Scp. '94 item above); hearing set for 25 - 26 Jan. '95. <br />2 Dec. '94 NOV from MLRD to COM, lnc. relating to tailor. to obtain an approved germit <br />application ac required by NOV 17M-94-042 dated September 22, 1994; hearing set for <br />?5 - 26 Jan. '95. Note that this NOV was duglicated by separate mailing on 8 Dec. '94. <br />12 Dec. '94 Gold Hill Mill co~nues in a state of suspended operation due to a C&DO issued by the <br />Mined Land Reclamation Board (MLRB), effective September 21, 1994. This C&DU <br />resulted from a tailings spill thaz occurred on or about August 14, 1994. The Boaldei <br />Cotmry Board of Zoning ajustment has, as of Detember 7, 1994, denied COM, <br />Ines appeal of the County Zoning Stsft''s previously-stated position that milling <br />of imported ore constitutes an industrial use not permitted in the laoremy Zone. <br />This prohibition specifically included "ma~nza~nite" rock from COM, roe's Mogul Tunnel <br />operation. <br />Sometime during the weekend of December 10 - 11, 1994, a fitting tailed at the base of <br />the concentrates tank in the mill, resulting is the spillage of several thousand gallons <br />of liquified concentrates into the interior of the mill building. Much of the matenal <br />flowed through drainage lines into the tailings pond; some coded up in a sump azea <br />within the building; a small quantity (probably less than one hundred gallons, my <br /> <br /> <br /> <br /> <br />