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Bamberg Ecological <br />observed during 2008 and 2009 site visits. Also evident was domestic cow use of the <br />site (see Photo 7). Several of the plants had clipped leaves and branches from animals. <br />Two patches of noxious weeds near the mine entrance were observed during an Octo- <br />ber 2005 site visit by an inspector from the State of Colorado Division of Minerals and <br />Geology. These noxious weeds patches were comprised of Canada thistle and Russian <br />knapweed. They were sprayed with herbicides and appeared to have been successfully <br />eradicated during the November 2009 survey. No additional areas of noxious weeds <br />were observed on the site during this June 2010 survey; however, some basal leaf <br />sprouting from the Canada thistle patch was observed (see Photo 8). <br />Conclusion <br />The revegetation program at the Mesita Hill Mine is starting very strong with good ger- <br />mination and growth of native species for this very and climate and rocky substrate. <br />With this second year of continued growth and further germination, the likelihood of <br />enough seeded plants surviving to colonize this area long-term is relatively high. How- <br />ever, continued success of this revegetation effort will depend on weather patterns over <br />the next several years. In addition, since this area adjacent to and not tenced trom ac- <br />tive range land, livestock grazing could be an issue greatly reducing the number of es- <br />tablishing plants, especially the grasses. It is recommended that the Canada thistle that <br />re-spouted be treated with an herbicide before they can fully reestablish and set seed. <br />2622 Valentia St. * Denver, Colorado 80238 * (303) 933-7291 3