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6. Post-Reclamation Site Drainage <br /> Final reclamation surfaces will be graded consistent with the surrounding undisturbed landscape. <br /> The majority of surface water will infiltrate the porous and dry landscape within 72 hours. The <br /> removal of the stormwater berms will take place once post mine revegetation is established. <br /> Once revegetation is complete,the post mine surface hydrology of the site will be such that off <br /> site drainage will be less than the pre mine, due to the depressions created by mining and <br /> grading. <br /> Map E-3 shows the post mine drainage direction. <br /> 7. Weed Control <br /> Measures will be employed for the control of any noxious weed species and the objective is to <br /> control undesirable plants on the Weimer Ranches 44 Mine site. Plants identified through the <br /> Colorado Noxious Weed Act(C.R.S. 35-5.5)and the Montrose County Noxious Weed List as <br /> undesirable and designated for management within the County will be removed. Plants <br /> identified as noxious weeds will be managed by control measures. A Weed Control Plan will be <br /> utilized as follows: <br /> 1) Each April, a weed survey will be taken of the permit area. <br /> 2) if any weedy patches or noxious plants are identified, chemicals approved for use by the <br /> weed control staff of Montrose County will be sprayed by backpack sprayer or 4-wheeler. <br /> 3) After reclamation,weed surveys and spraying will continue until perennial cover and <br /> production of the site meets DRMS requirements and bond release is obtained. <br /> The Division and Montrose County staff will be consulted regarding any weed infestation areas <br /> and control measures to be implemented prior to their initiation. The plan does not contemplate <br /> total weed removal on the property. Past experience shows that some initial weed cover in the <br /> first year following retopsoiling is beneficial to reclamation efforts in rangeland sites. Weeds <br /> provide shade for new grasses,are a means of holding snow on the seedbed longer, and protect <br /> seedlings from wind and water erosion until the planted species firmly take hold. <br /> Weimer Ranches #4 :nX iarwkki aad 4svx aa�Pi.1.t <br /> June 2021 D-3 <br />