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COLORADO OPERATIONS <br />C1iM",--mXrMo1Ybdenum,.-- Henderson Mill <br />P.O. Box 68 <br />- Empire, CO 80438 <br />A Freeport-McMoRan Company Phone (303) 569-3221 <br />Fax (303) 569-2830 <br />July 8, 2009 <br />Certified Mail: 7006 2150 0001 8831 6130 <br />RECEIVED <br />JUL 15 2009 <br />Mr. Allen Sorenson / Division of Reclamation, <br />Division of Reclamation, Mining & Safety v Mining and Safety <br />1313 Sherman St., Rm. 215 <br />Denver, CO 80203 <br />RE: Permit #77-342/Henderson Mill, Seepwater Pipeline Extension <br />Mr. Sorenson, <br />This letter is being sent to you as a courtesy to let you know that we will be adding an <br />extension to the existing seepwater return line, which collects dam seepage water from <br />the 1-Dam and 3-Dam at the Henderson Mill. This extension of the pipeline component <br />of this Environmental Protection Facility has been an anticipated activity, knowing that <br />as the dam crest increases in elevation, additional piping would be necessary to return <br />seepage waters to the tailing pool. <br />Included with this letter is a set of drawings outlining the extension project. We will <br />provide you with a set of as-built drawings and an engineer's certification once the <br />project is complete. If you have any comments or questions regarding Seepwater <br />Extension Project, please feel free to contact me at 303-569-3221 x2284. <br />Best regards, <br />Tim Haynes <br />Environmental Engineer <br />Henderson Mill <br />19302 County Road 3 <br />Parshall, CO 80468 <br />303-569-3221 ext. 2284 <br />tim haYneskfini.com <br />Cc: Bryce Romig, CMC <br />Miguel Hamarat, CMC <br />Enc. Henderson Mill Seepwater Extension Project Drawings (W.W. Wheeler)