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4 <br />C. Management plans: Control and eradicate any introduced infestation through <br />herbicide application. <br />D. Evaluation: Assess population changes through semi - annual inventory; develop <br />and implement treatment strategy when appropriate. <br />Weed: Scotch thistle Priority: 1 <br />A. Current distribution: Infestations occur within Huerfano County and may be <br />introduced through vehicle movement. <br />B. Goal: To prevent the introduction of this species into the site. <br />C. Management plans: Control and eradicate any introduced infestation by utilizing <br />herbicide applications. <br />D. Evaluation: Assess population changes through semi - annual inventory; develop <br />and implement treatment strategy when appropriate. <br />Weed: Russian knapweed Priority: 1 <br />A. Current distribution: Infestations occur within Huerfano County and may be <br />introduced through vehicle movement. <br />B. Goal: To prevent the introduction of this species into the site. <br />C. Management plans: Control and eradicate any introduced infestation by utilizing <br />herbicide applications. <br />D. Evaluation: Assess population changes through semi - annual inventory; develop <br />and implement treatment strategy when appropriate. <br />Weed: Leafy spurge Priority: 1 <br />A. Current distribution: Infestations occur within Huerfano County and may be <br />introduced through vehicle movement. <br />B. Goal: To prevent the introduction of this species into the site. <br />C. Management plans: Control and eradicate any introduced infestation by utilizing <br />herbicide applications. <br />D. Evaluation: Assess population changes through semi - annual inventory; develop <br />and implement treatment strategy when appropriate. <br />D. APPENDICES <br />Appendix 1. HERBICIDE USE PROTOCOLS <br />When herbicides are utilized for weed control, they will be registered with EPA and <br />approved by the State of Colorado. Applicators will be appropriately licensed by the <br />State of Colorado. Applications will be made according to label requirements. <br />Possible herbicide selections will include, but not be limited to, Plateau ®, Curtail ®, <br />Tordon ®, Milestone®, Grazon ®, Habitat ®, Redeem® and 2,4 -D. Their use will be <br />determined by specific weed populations and ecosystem constituents. <br />Appendix 2. MECHANICAL CONTROL METHODS <br />