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The Shores Gravel Mine Weed Management Plan <br /> Noxious weeds will be eradicated or managed within the Shores Grave Mine operations <br /> areas. Noxious weed species to be managed are defined as those plant species currently <br /> identified by the Colorado State Department of Agriculture (CDA) as noxious under the <br /> Colorado Noxious Weed Act. Management efforts will be directed to those species <br /> identified under List A or List B by the CDA. List A species are required to be eradicated, <br /> while List B species will be controlled. <br /> The noxious species are not listed here as the list of noxious species changes regularly.The <br /> Colorado State Department of Agriculture maintains a list of noxious weed species on their <br /> web site(https://www.colorado.gov/pacific/agconservation/noxious-weed-species). <br /> The presence of noxious weeds will be monitored annually during the summer growing <br /> season at the Shores site. Weed management measures will be undertaken where a single <br /> or combination of noxious weed species comprises or shows a deleterious effect to more <br /> than ten (10) percent of the live site vegetation. Further, where noxious weed species or <br /> plant pests constitute more than 25 percent relative vegetation cover in a contiguous area <br /> of 1000 square feet,the area will be identified as requiring weed management. <br /> Noxious weeds will be controlled by any combination of cultural, mechanical, biological <br /> or chemical measures. Weed control measures will be developed specifically for the <br /> noxious weed species encountered and in conjunction with the local county weed control <br /> district and/or the Colorado State Department of Agriculture. Weed control measures will <br /> be undertaken by trained and/or licensed (if required by law) personnel. Weed <br /> management control will initiate within two weeks of noxious weed identification at any <br /> operation, or as specified by the county weed control specialist. <br /> Where noxious weed control measures cause elimination of vegetation at a revegetated <br /> site, seeding or planting of desirable replacement vegetation will occur during the first <br /> normal planting or seeding season after weed control measures have been implemented. <br />