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•Hendricits Mining Co. <br />Caribou, Colorado <br />6~~ ~iroa~/1°o(d./GIue~Jbu~ t97'9 il~, ~, <br />~` <br />,~ , <br /> <br />October 22, 1996 <br />Mr. Bob Shuckle <br />Mr. Richard Horstmann <br />Colorado Department of Public Health & Environment <br />Water Quality Control Division <br />4300 Cherry Creek Drive South <br />Denver, Colorado 80222-1530 <br />Re: Hendricks Muting Co., Cross Mine, #CO-0032751 <br />Gentlemen: <br />I appreciate the time you both spent with Tun Cowart and me on September 25, 1996, to <br />discuss issues related to Hendricks Muting Co. (IIIvIC). Hopefully the report ]: prepared <br />on in-mine and water treatment improvements and the water quality graph and data <br />summaries provided by Jim Cowart will be helpful to the Division in preparing tl!te revised <br />NPDES permit. <br />The following items summarize our understanding of issues discussed at this meeting: <br />1. We will provide to the Division updates of previous submittals for individual flow <br />data for the Cross Mine discharge, Caribou Mine dischazge, and Coon Track Creek so <br />that the Division may proceed with calculations for the revised NPDES permit. The <br />Division will be reevaluating flow, old and new zinc equations, hazdness, frequency of <br />monitoring, mass vs concentration limits, WET testing requirements, antidegrad:ation, and <br />other factors in preparing the draft permit. <br />2. Since HMC has a leaselpurchase option on the Caribou Mine until January 1998, <br />and since that option requires HMC to continue paying for the NPDES monitoring and <br />reporting, HMC is requesting that the Division combine the Cross and Caribou NPDES <br />permits into one from an allocation standpoint. On an interim basis, this ~~vould be <br />monitored with two discharge points since they are physically separated but would be <br />physically combined via piping within one year. The Cross Mme permit could then be <br />revised so that only one dischazge point would be required. If at any time the purchase <br />option is executed by HMC, then the Caribou Mme NPDES permit could be inactivated. <br />However, if for any reason either HMC or Nederland Mmes cancels the lease~purchase <br />option, then the Caribou NPDES permit would revert to the Caribou Mme owner, and <br />HMC would be relieved of its monitoring and reporting requirements. The Cross Mine <br />Mailing Address: Post Office Box 653-Caribou • Nederland. Colorado 8oa66-IX;53 <br />Mine 303-258-3806 Fax # 303-258-0402 <br />