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liEC-15-00 Tui_ 11.02 F,M Strl!~.~:•-~I~Ti11G DCN FA;~ `aG. 55~~5 ;1947 NOXIOUS WEED CONTROL PLAN LONGMONT DISTELL OPERATIONS In ordt;r to control the invasion and spread of noxious weeds, a comprehensive weed management plan wil] be employed at the Longmont Dis[ell Operations, including preventative, chemical and mechanical controls. This plan addresses the action to be taken by Aggregate Industries persoruiel, as needed, to control and prevent the infestation of the following noxious weeds identified on the subject prope y and/or recognized by Weld (;ounty: Canada Thistle Musk Thistle Leafy Spurge Field F3indweed Russian Knapweed Diffuse Knapweed Scotch Thistle Spotted Knapweed Daltna.tion Toaclflax CURF'_ENT WF,ED MITIGATION Site was mowed September 11, 2000. FUTLJRE WEED MITIGATION 1. Itt consultation with qualified vegetation managers and/or county weed coordinators, the site will be assessed in the spring to determine best management practices for week control. 2. A combination of timed mowings aild herbicide treatments will be utilized to ?. 05/13 control weeds. ~ '~. a. The site will be mowed as necessary l of " ut the year ,to older to ~, /,~,,~ establish new grass and to control weeds. ~ ~~~.a~ ~/Gv~-~s,~`~,.~/°~%~'~'`^'"V `" b. An aggressive mowing program will be employed the first year following °"~`g revegetation of an area, withholding herbicide use until the follotiving year and to avoid damaging the new seedlings. 2 Appropriate herbicides wilt be applied to establish vegetative areas in ' ~ accordance with reconnnendations provided by qualified vegetation managers and/or county weed control coordinators. 3. ~ The site will be evaluated in late summer or fall to determine if any additional treat~ment~is'required and to determine if additional grass~-seeding is required. ,~ ~~. ~