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(i) Aggressively invades or is detrimental to economic crops or native <br />plant communities; <br />(ii) Is poisonous to livestock; <br />(iii)I5 a carrier of detrimental insects, diseases, or parasites; <br />(iv)The direct or indirect effect of the presence of this plant is detrimental <br />to the environmentally sound management of natural or agricultural <br />ecosystems" (Colorado Noxious Weed Act, 35-5.5) <br />B. Integrated Weed Management <br />According to the Colorado Noxious Weed Act, integrated weed management <br />(IWM) is "the planning and implementation of a coordinated program <br />utilizing a variety of methods for managing noxious weeds, the purpose of <br />which is to achieve desirable plant communities" (Colorado Noxious Weed <br />Act, 35-5.5). Methods used in integrated weed management include but are <br />not limited to preventative measures, education, monitoring, mechanical <br />control, cultural control, biological control and chemical control. The process <br />of integrated weed management takes into account each method's potential <br />hazard to people, the environment, and property while also taking into <br />consideration limitations of budget and human resources. <br />C. List A Species <br />List A species are uncommon noxious weeds that are found in Colorado in <br />small populations or are not yet found in Colorado but are in surrounding <br />states and threaten to become established. These weeds are mandated for <br />eradication by the Colorado Noxious Weed Act. Please see the appendix for <br />List A species occurring within the City of Louisville. <br />D. List B Species <br />List B species are so well established and common throughout Colorado that <br />their total eradication in the State is not feasible. However, isolated <br />populations are recommended for eradication. Suppression and containment <br />are the goals for all other populations. Please see the appendix for List B <br />species occurring within the City of Louisville. <br />E. List C Species <br />List C species are widespread and well established within Colorado. The <br />State's goals are to provide education, research, and biological controls to <br />local governments. List C species are the lowest priority for control for the <br />City of Louisville Open Space and Parks Divisions. As resources of time, <br />budget, and staff permit, controls will be conducted to help suppress and <br />contain their spread. Please see the appendix for List C species found within <br />the City of Louisville. <br />Integrated Weed Management Plan 5 <br />9 <br />