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STATE OF COLORADO <br />~2 DIVISION OE MINERALS AND GEOLOGY <br />,Department of Natural Resources <br />`~ 7373 Sherman Sf., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 ~~~~'~~~~ <br />FAX: (303) 832-8106 <br />/ DEC 2 7 2D05 <br />V December 20, 2005 <br />Division of Minerar, ;,,;, „. <br />~ Mary Seifert <br />~ eifert Construction <br />.~' PO Box 305 <br />Westcliffe, CO 81252 <br />~,,/ ~: <br />Re: Seifert Pit, Permit M-1985-040, Approval of Technical Revision TR-02, and <br />Completion of Corrective Actions (from Inspection of 9/29/05). <br />Dear Ms. Seifert, <br />COLORADO <br />DIVISION OF <br />MIN&RALS <br />GEOLOGY <br />YECLAMATION•MINING <br />SAFETT•SCIENCE <br />Bill Owens y" <br />Governor ~`~"'~ <br />Russell George ~~ <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Natural Resource Tru stee <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 vegetaton on the area being treated. The area in question is <br />the surface of a small stockpile in the pit. It appeazed 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 years 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 Dutango field office: 701 Camino del Rio, Room 125, Durango, CO 81301; telephone: 970- <br />247-5193. <br />Sincerely, <br />~e~ ~ <br />Bob Oswald <br />Environmental Protection Specialist <br />Ec: Harry Posey, DMG <br />C:\seifert nox pb con tr2 appr/rco <br />Office of Office of Colorado <br />..._,.,+. __a o..,.r....-.:..., e~.:..o ,.,d i.,~..:.,o nn~..e~ (:cnlneiral Survnv <br />