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5. Weed Control <br />This area of Rio Blanco County is known to have a weed of significant concern known as leafy <br />spurge as well as others such as the thistle group. United will take extreme care in preventing weeds <br />from establishing infestations in the permit area by doing the following: <br />1) Each April, a weed survey will be made of the permit area. <br />2) If any patches or plants have been identified, they will be sprayed by backpack sprayer or 4 - <br />wheeler using chemicals approved for use by the weed control staff of Rio Blanco County. <br />3) After reclamation, weed surveys and spraying will continue until the perennial cover and produc- <br />tion of the site have met DMG requirements and bond release has been obtained. <br />The Division and Rio Blanco weed control staff will be consulted regarding any weed infestation <br />area and any control measures prior to their initiation. The plan does not contemplate total weed re- <br />moval on the property. Past experience shows that some initial weed cover in the first year follow- <br />ing retopsoiling is beneficial to the reclamation effort in dry range sites. Weeds tend to provide <br />shade for new grasses, are a means of holding snow on the seedbed longer and protect it from wind <br />and water erosion until the planted species have taken hold. <br />6. Revegetation Success Criteria <br />The revegetation of the site shall be considered successful when the live perennial cover is 90% of <br />the historical live perennial cover on the original site. According to the NRCS report, this cover was <br />20%. Therefore the goal of the reclamation is 18% live perennial cover. <br />The revegetated area will be monitored for success of reclamation until accepted by the Division. If <br />revegetation failures occur prior to release, an analysis of the site will be made and the area will be <br />revegetated again as necessary. <br />Berry Pit 3/02 18 <br />