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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depamrent of Nawral Resowces <br />1313 Sherman 5t., Room 215 <br />Denier, Colorado 80203 <br />Phone (30 866.3567 <br />MAX. t3031832 -e106 <br />To: Mined Land Reclamatio B <br />From: Bruce Humphries I <br />Subject: Weed Control Policy <br />Date: July 17, 1498 <br />Revised February 14, 2002, Oct 29, 2002) <br />10 <br />w <br />1/ 'A --4W4 <br />L <br />Bill owan <br />GoYer+iar <br />[;re} � Walcher <br />�u� tri <br />Itunaid w. Cagy <br />AWM Uh+fbn n. <br />The Governor's Office has made it know to state agencies of tate states need to effectively <br />control the spread of noxious weeds. This policy is intended to address the management of <br />noxious weeds [hat can occur at mine sites. The question for the Division is what is an <br />acceptable level of weeds at an active mining operation, or on a reclaimed site• at the time of <br />financial warranty release request, in terms of the requirements of the Act. Rules, and bond <br />releaac? The following document is intended to provide the staff and operators guidance on <br />this issue. <br />_ GU DEL E FOR THE MANAGEMENT OF NOXI'4US WE AT HARD ROCK <br />AND CONSTRUCTION MATERIAL MINING OPERATIONS <br />I. INTRODUCTION: <br />The infestation of noxious weeds on agricultural land and rangeland is a serious <br />problem in Colorado and other western states_ Reduced productivity, loss of desirable <br />plant species diversity and wildlife habitat, and livestock health hazards can result from <br />noxious weed infestations. Land disturbances associated with mining provide <br />conditions conducive to the invasion and spread of a number of undesirable plant <br />species, <br />This guide has been developed to provide guidance on the management the of noxious <br />weeds on reclaimed areas and other areas that may be affected by mining activities, due <br />to the lack of specific direction in the Act and Regulations. The purpose of the <br />guideline is to set forth Board policy based on the Board's interpretation of the Act, <br />Regulations, and common sense, for the effective control of noxious weeds at permitted <br />mine sites. It is also intended to provide staff guidance as to when an operator has <br />established an acceptable type of plant cover so that the Office: may consider financial <br />and performance warranty release. <br />