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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />~~v,_Department of Natural Resources <br />'" 1313 Sherman 5[., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />RECEIVED <br />December 20, 2005 <br />DEC 2 71005 <br />Mary Seifert Division of Minerab aa~ O~alapy <br />"'~""L Seifert Construction <br />.~"" PO Box 305 <br />Westcliffe, CO 81252 <br />Re: Seifert Pit, Permit M-1985-040, Approval of Technical Revision TR-02, and <br />Completion of Corrective Actions Zfrom Inspection of 9%29/05). -' <br />Deaz Ms. Seifert, <br />COLORADO <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />RECLAMATION•MINING <br />SAFETY•SCIENCE <br />Bill Owens O i <br />Governor ~h{~~.~[} <br />Russell George WN i <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />I have received your submittal dated 11/29/05, consisting of a noxious weed control plan for the site named above. <br />The submittal was to satisfy an inspection problem concerning the presence of Canada thistle which did not appear <br />to be under a control plan. <br />The plan you provided appears adequate for controlling the Canada thistle on the small area that was noted in the <br />Division's inspection. You are aware that Round-up (aka Glyphosate) is anon-selective herbicide. As such, it will <br />kill all vegetation it contacts, including any desirable vegetation on the area being treated. The area in question is <br />the surface of a small stockpile in the pit. It appeared to be topsoil, but my observation was not conclusive. If it is <br />topsoil, it is imperative that the thistle be eliminated, even if it means that the establishment of grass is delayed a <br />few years. Control of Canada thistle will require several yeazs of spraying and mowing, so please be vigilant with <br />the monitoring and aggressive with the treatments. You should also make sure that this plant does not spread to <br />other areas of the permit. <br />Round-up is not persistent in the soil, and after the thistle is gone, grass may be planted. Please report the activities <br />and progress in your annual reports. <br />The Division considers the weed control plan to be adequate, and is approving the technical revision. The <br />outstanding problem at the site is, therefore, considered to be corrected. If there are any questions, please contact <br />me at the Division's Durango field office: 701 Camino del Rio, Room 125, Durango, CO 81301; telephone: 970- <br />247-5193. <br />Sincerely, <br />~~~ „~~~. <br />Bob Oswald <br />Environmental Protection Specialist <br />Ec: Harry Posey, DMG <br />C:\seifert nox pb tort tr2 appr/rco <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines GeofoRical Survey <br />