2022-03-25_PERMIT FILE - M2022001

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v. Topsoiling—specify anticipated minimum depth or range of depths for those areas where topsoil will be replaced. Topsoil will be uniformly placed and spread on all areas disturbed by the mining above the anticipated high water line and areas graded back to native grade. The minimum thickness shall be 6 inches above the surrounding finished gratle. WEED MANAGEMENT PLAN Noxious weeds will be eradicated or managed within the Section 20 Gravel Mine operations areas. Noxious weed species to be managed are defined as those plant species currently identified by the Colorado State Department of Agriculture (CDA) as noxious under the Colorado Noxious Weed Act. Management efforts will be directed to those species identified under List A or List B by the CDA. List A species are required to be eradicated, while List B species will be controlled. The noxious species are not listed here as the list of noxious species changes regularly. The Colorado State Department of Agriculture maintains a list of noxious weed species on their web site (https:/Iwww.colorado.gov/pacific/agconservation/noxious-weed-species). The presence of noxious weeds will be monitored annually during the summer growing season at the Section 20 Gravel Mine site. Weed management measures will be undertaken where a single or combination of noxious weed species comprises or shows a deleterious effect to more than ten (10) percent of the live site vegetation. Further, where noxious weed species or plant pests constitute more than 25 percent relative vegetation cover in a contiguous area of 1000 square feet, the area will be identified as requiring weed management. Noxious weeds will be controlled by any combination of cultural, mechanical, biological or chemical measures. Weed control measures will be developed specifically for the noxious weed species encountered and in conjunction with the local county weed control district and/or the Colorado State Department of Agriculture. Weed control measures will be undertaken by trained andlor licensed (if required by law) personnel. Weed management control will initiate within two weeks of noxious weed identification at any operation, or as specified by the county weed control specialist. Where noxious weed control measures cause elimination of vegetation at a revegetated site, seeding or planting of desirable replacement vegetation will occur during the first normal planting or seeding season after weed control measures have been implemented. SeCtlOn 20—Gravel Mine—MLRB 112 Permit Application Exhibit E-6