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Musick, Jason <br />From: Troy Summers [tsummers@wwcengineering.com] <br />Sent: Monday, September 15, 2008 2:18 PM <br />To: Musick, Jason <br />Subject: Edna Mine Vegetation Reports <br />Attachments: 2005 Edna Mine Vegetation Report_DRAFT. pdf; 2006 Edna Mine Vegetation <br />Report_DRAFT. pdf <br /> <br />2005 Edna Mine 2006 Edna Mine <br />Vegetation Repo... Vegetation Repo... <br /> Jason, <br />Attached are two (2) Vegetation Sampling Reports for the Edna Mine. The first is titled <br />"2005 Edna Mine Vegetation Sampling Report" and is dated 04/27/06. The second is titled <br />"2006 Edna Mine Vegetation Sampling Report" and dated 10/19/06. <br />The 2005 report passes all required performance standards. <br />The 2006 report passes all required performance standards except Cover at West Ridge BRU & <br />Moffat BRU: No-Topsoil. The 2006 Mean was 30.5% compared with the arbitrary standard of <br />47%. The 47% Cover value was arbitrarily set in the permit application and it did not <br />include any allowance for precipitation patterns. During the 2006 growing season, the <br />region received very little rain. As shown in Table 1-2 of the report, the reference area <br />vegetation cover values reflect the lower level of herbaceous growth during this year. <br />The non-topsoiled areas exceeded the standard set by the reference areas for Cover. <br />A comparison of the non-topsoiled to the reference areas for this season would pass all <br />vegetation performance standards. A request is hereby set forth to CDRMS to allow a <br />comparison to the reference areas for the <br />2006 sampling event. <br />Please contact me with any questions and/or comments. As you are aware, time is of the <br />essence if any further field work needs to be accomplished this year. <br />Thanks for your help with this matter, <br />Troy <br />Troy Summers <br />Associate Geologist <br />tsummers@wwcengineering.com <br />WWC Engineering <br />611 Skyline Road <br />Laramie, WY 82070 <br />Phone: (307) 742.0031 <br />Fax: (307) 721.2913 <br />www.wwcengineering.com <br />1