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2005 Edna Mine Vegetation Sampling Report <br />0 1. Overview <br />The information provided this report follows Colorado Department of Mining and Geology <br />(DMG) requirements to verify that vegetation at The Pittsburg and Midway Coal Mining <br />Company's Edna Mine meets the standards established in the mine reclamation plan. <br />The information provided in this report constitutes Year One of the two years required <br />verification information. <br />The Edna Mine is located approximately four miles north of Oak Creek, Colorado. <br />1.1. Sampling Methodology <br />Vegetation sampling was conducted in accordance with the Edna Mine Vegetation Final <br />Bond Release Monitoring Plan, dated April 8, 2005, approved by the Colorado DMG. A <br />copy of this plan is available on file at the Colorado DMG. Vegetation sampling was <br />conducted at the Edna Mine from August 29 through September 13, 2005. The survey <br />was conducted by Wayne Erickson and Richard Bonine, Jr. of Habitat Management, Inc. <br />1.2. Performance Standards and Statistical Analysis <br />Statistical analysis of all data collected was conducted as described in the Colorado <br />DMG's Guideline Regarding Selected Coal Mine Bond Release Issues, April 18, 1995 <br />("Bond Release Guideline"). When the reclaimed area parameter sample mean is equal <br />to or greater than 90% of the reference area sample mean (or weighted mean), or 90% <br />of the approved technical standard, then reclaimed vegetation is considered successful <br />for that parameter. In order to make a direct comparison, the sample size(s) must meet <br />sample adequacy requirements. <br />Table 1-1 below presents the Edna Mine Bonded Reclaimed Units & Vegetation <br />Performance Standards of the Bond Release Units (BRUs). <br />Tah!e 1-1• Pdna Mina Rnndpd Reclaimed Units & Veaetation Performance Standards <br /> Vegetation Parameter <br />Reclaimed Bond Bonded Acres b <br />Release Unit (BRU) (approximate) Cover Production Diversity' Density <br /> Min 5 Species <br />West Ridge BRU: 22 Reference Area Comparison between 3 & N.A. <br />Topsoiled 40% Rel. <br /> Importance <br /> 90% grass <br />West Ridge BRU: 466 ° <br />47% N.A. <br />F 5% forbs N.A. <br />No-Topsoil 5%tree/shrub <br /> Min 5 Species Min 1000 <br />Moffat BRU: Topsoiled 215 Reference Area Comparison b40% Rel.& Stems per <br /> Importance acre <br />Moffat BRU: <br />224 <br /> <br />47% <br />1 <br /> <br />N.A. 90% grass <br /> <br />5%forbs <br /> <br />N.A. <br />No-Topsoil 5%tree/shrub <br />1- <br />i Diversity Standard for No-Topsoil units is voluntary <br />0 <br />Habitat Management, Inc.