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k (cc-I 1/) mc "t <br /> <br />4 DEPARTMENT OF THE ARMY <br />CORPS OF ENGINEERS, OMAHA DISTRICT <br />DENVER REGULATORY OFFICE, 9307 SOUTH WADSWORTH BOULEVARD <br />LITTLETON, COLORADO 80128-6901 <br />January 28, 2011 <br />Mr. Peter Hays <br />Division of Reclamation, Mining and Safety <br />Department of Natural. Resources <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />RE: Lafarge West, Inc., Iverson Mine, File No. 2011-001 <br />Dear Mr. Hays: <br /> <br />?151 n 1? - ; <br />1.., . t <br />Reference is made to the above-mentioned project located in Section 34, T6N, R66W, Weld <br />County, Colorado. <br />If any work associated with a project requires the discharge of dredged or fill material, and any <br />excavation associated with a dredged or fill project, either temporary or permanent, in an aquatic site, <br />which may include ephemeral and perennial streams, wetlands, lakes, ponds, drainage ditches and <br />irrigation ditches, this office should be notified by a proponent of the project for Department of the <br />Army permits, changes in permit requirements or jurisdictional determinations pursuant to Section 404 of <br />the Clean Water Act. <br />Work in an aquatic site should be identified by the proponent of the project and be shown on a <br />map identifying the Quarter Section, Township, Range and County or Latitude and Longitude, Decimal <br />Degrees (datum NAD 83) and the dimensions of work in each aquatic site. Any loss of an aquatic site <br />may require mitigation. Mitigation requirements will be determined during the Department of the Army <br />permitting review. <br />If there are any questions call Mr. Terry McKee of my office at 303-979-4120. <br />Sincerelv. <br />tm