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environmental exposures. Where control of extensive weed infestations results in limited vegetative cover or bare - <br />ground, the affected areas will be either be interseeded or ripped and seeded, dependent on site - specific conditions. <br />Evaluation of control effectiveness — Generally, in conjunction with the spring Environmental Management <br />surveys, areas of previously identified and treated noxious weed infestations are inspected and the effectiveness of <br />control measures is evaluated based on reduction or elimination of weed infestations. ETU EC's weed - control <br />contractors also provide similar information, based on their field observations. This information is utilized in the <br />management planning process to determine the need for continued treatment and to modify treatment method(s), if <br />indicated, to improve their effectiveness. <br />Vegetation Monitoring <br />RAG Empire will implement a monitoring program to evaluate revegetation success to determine if the revegetation <br />of each site is proceeding in an acceptable fashion. Each site will be studies the 3`d year after reclamation and the final <br />two years before release to determine revegetation success. <br />During the monitoring period, RAG Empire does not intend to meet sample adequacy when the sites are monitored in <br />the 3 "' year of the revegetation period. Sample adequacy will be met during the bond release - sampling period. The 3 "' <br />year monitoring will use ocular estimation to estimate cover. This technique has been used by the other agencies for <br />cover reasons. <br />