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iii iiiiiiiniiiiu ~ <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl of Natural Resources <br />1313 Sherman 51., Room 215 <br />Denver, Colorado BO203 <br />Phone. (303) 86E-7567 <br />FAX: (3031 83 2-8106 <br />April 26, 1996 <br />Mr. Ken Jacobson <br />Western Colorado Regulatory Office <br />U.S. Army Engineer District, Sacramento <br />402 Rood Avenue, Room 142 <br />Grand Junction, CO 81501-2563 <br />DENVER <br />OFFICE <br />RE: Resl3onse to Public Notice No. 199475346, SANDCO, Inc., <br />Dalton Pit, Colorado Reclamation Permit No. M-87-064. <br />Dear Mr. Jacobson: <br />~~~~~ <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />IamesS Lochhead <br />Eaecueve Director <br />Michael B. Long <br />Division Director <br />The Colorldo Division of Minerals and Geology (DMG-, Durango field office, has reviewed <br />the project: description for the Dalton Pit, public notice number 199475346, and offers <br />the following comments for consideration. <br />DMG has not identified any major concerns with the mine plan proposed in the project <br />descriptiorl for the Dalton Pit. DMG concerns and reclamation plan requirements can be <br />adequately addressed by the operator through the Technical Revision and/or Amendment <br />process for the existing Colorado reclamation permit. One of the key issues to be <br />addressed by the operator regards clarification of the maximum depth of extraction in <br />relation to the channel bottom elevation. Current depth restriction for the Dalton Pit is <br />defined by the surface elevation of the river. Additionally, DMG will probably require <br />development and implementation of an appropriate river channel survey and continuation <br />of a monitlxing program to verify that no significant adverse impacts to river channel <br />stability are occurring as a result of gravel extraction activities. <br />DMG's exFlerience with SANDCO, Inc., indicates that the operator complies with <br />Colorado n~clamation statutes. Mining activities conducted by SANDCO, Inc., have <br />continuou:;ly exhibited a corporative attitude with regulatory requirements and an <br />awareness of environmental responsibility. <br />Please contact me at the DMG field office in Durango, 1474 Main Avenue, Room 207, <br />Durango, CO 81301-5182, phone (970) 247-5062, if I can be of greater service. <br />Sincerely, <br />Wallace H. Erickson <br />Environmental Protection Specialist <br />