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2010 Edna Mine Vegetation Sampling Report <br />Introduction <br />Chevron Mining Inc. is in the process of addressing final bond release requirements for the <br />Edna Mine. Vegetation monitoring was conducted at the mine in 2005, 2006, and 2008 with all <br />of the monitored areas passing the required parameters. However, infestations of Canada <br />thistle (Cirsium arvense), houndstongue (Cynoglossum officinale), whitetop (Cardaria draba) <br />and perennial pepperweed (Lepidium latifolium) were observed in the Moffat area of the mine. <br />Therefore, vegetation cover monitoring was conducted in the fall of 2010 in the Moffat area in <br />order to demonstrate a relative noxious weed cover of less than three percent. This report <br />presents the results of the monitoring and documents that the Moffat Area has a noxious weed <br />cover below three percent. <br />Sampling Methodology <br />Vegetation sampling was conducted in accordance with the Edna Mine Vegetation Final Bond <br />Release Monitoring Plan (dated April 8, 2005) approved by the Colorado Division of Mining, <br />Reclamation, and Safety (DRMS). A copy of this plan is available on file at the DRMS. <br />Vegetative cover was measured using 10 meter transects with 100 point intercepts per transect. <br />The value of each intercept equals 1% of the total cover. Sampling was conducted on August 4- <br />5, 2010 by Chris Keough and Lindsey Brandt of Habitat Management, Inc. <br />Results <br />Eighteen samples were collected to obtain statistical adequacy. Results of the sampling are <br />shown in Table 1. A map of transect locations, and example photographs are provided below. <br />Total cover of noxious weeds in the Moffat area was 0.7%. Relative cover of noxious weeds in <br />the Moffat area was 1.6%, which is below the maximum level allowed by the DRMS of 3%. No <br />statistical evaluation was completed since only a simple weed cover value is desired. A few <br />weed infestations persist in the lower Moffat area; however these areas do not reflect the <br />condition of the Moffat area as a whole. Photographs of typical vegetation found in the Moffat <br />area are included below. <br />Summary <br />Vegetation sampling data demonstrates that the relative cover of noxious weeds in the Moffat <br />area is less than 3%. <br />Habitat Management, Inc. 1 August 9, 2010