2022-06-08_PERMIT FILE - M2022001 (2)

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ii. Seeding- types, mixtures, quantities and time of application; Please refer to the Reclamation Plan Map for the list of plant materials and seeds to be utilized. The operator will seed during the appropriate season to ensure adequate moisture for germination and implement weed controls to allow the grasses to successfully establish. Additional plantings may be installed once the reservoirs are full of water and the grasses are established. iii. Fertilization-types, mixtures, quantities, and time of application; The type and application rate of fertilizer shall be determined based on a soil test at the time of final reclamation. iv. Revegetation- types of trees, shrubs, etc.; The site is historically flood irrigated farmland. The site will be revegetated with an upland grass seed mix in areas that are above the highwater line or are graded back to native grade. 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 grade. 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://www.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 and/or 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. Section 20-Gravel Mine—MLRB 112 Permit Application Exhibit E-6