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Mine sites or portions of mine sites that were not in reclamation as of January 19, 2005 shall <br />manage or control tamarisk and Russian olive as noxious weeds. <br />The level of management or control of tamarisk and Russian olive, depends upon whether the <br />permit azea is behaving as a noxious weed "source" or a "sink". A site shall be considered a <br />"source" if it is the sole area harboring noxious weed species which act as a source for <br />propagation, through seeds or other means, to adjacent undisturbed areas. Complete eradication <br />of the tazget species is typically required for "source" areas. A site maybe considered a "sink" <br />if it is adjacent to infested azeas that could give rise to an invasion of the site by noxious weed <br />species. The level of management will vary in "sink" areas but total eradication is not likely to <br />be required either daring active mining or at the time a release request is made. Noxious weed <br />management plans and future warranty releases shall be based on site-specific criteria in both <br />instances. <br />The proposed revisions to 8 C.C.R. 1203-19, Rules Pertaining to the Administration and <br />Enforcement of the Colorado Noxious Weed Act, (Weed Rules), requires that regional azeas of <br />the State shall eradicate tamarisk. Where the State Weed Rules require regional noxious weed <br />eradication, the DMG, Minerals Program may also require eradication. The Board's weed policy <br />may be revised at any time so that it is consistent with the State Weed Rules and State noxious <br />weed policy. <br />