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2006 Edna Mine Vegetation Sampling Report <br />1. Overview <br />The information provided this report follows Colorado Division of Reclamation, Mining, and <br />Safety (DRMS) 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. The <br />information provided in this report constitutes year two of the two years of required 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 Bond <br />Release Monitoring Plan, dated April 8, 2005, approved by the Colorado DRMS. A copy of this <br />plan is available on file at the Colorado DRMS. Vegetation Sam r; was conducted at the Edna <br />Mine from August 28 through September 5, 2006. The s y was conducted by Richard <br />Bonine, Jr. and Lindsey Brandt of Habitat Management, In2 / ? <br />1.2. Performance Standards <br />Statistical analysis of all data collected was <br />Guideline Regarding Selected Coal Mine Bc <br />Guideline"). When the reclaimed area parar? <br />of the reference area sample mean (or - <br />standard, then reclaimed vegetatior'con: <br />make a direct comparison, the sarr ,tee s, (E <br />1-1 below presents the Edna ,Aine n( <br />Standards of the Bond Release(???? .--- <br />condu <br />t <br />cP <br />r? <br />ded <br />to %ical AWalysis <br />scribed in the Colorado DRMS's <br />c? <br />ease sues, April 18, 1995 ("Bond Release <br />le n is equal to or greater than 90% <br />, or 90% of the approved technical <br />successful for that parameter. In order to <br />meet sample adequacy requirements. Table <br />claimed Units & Vegetation Performance <br />. _ ??__ ¦?: -_ o_./ .. .- \1?\ ?t 1 Initc it vanPtatinn Performance Standards <br />IaDle 1=1: CUIN2 W11111W GpV' GU a., •• ?+••••`' ° -? ---- - - <br /> / Vegetation Parameter <br />Reclaimed Bond Bonded Act , Shrub <br />Release Unit (BRU) ?proximat/E Cover Production Diversity Densi <br /> Min 5 Species <br />West Ridge Topsoiled / <br />Reference Area Comparison between 3 & <br />40% Rel. N.A. <br />BRU Importance <br /> 90% grass <br />West Ridge BRU: 466 47% N.A. 5% forbs N.A. <br />No-Topsoil 5%tree/shrub <br /> Species Min 1000 <br /> <br />Moffat Topsoiled BRU <br />215 <br />Reference Area Comparison een 3 & <br />7]/ <br />Rel. Stems per <br /> ortance acre <br /> 90% grass <br />Mo 224 47% N.A. 5% (orbs N.A. <br /> 5%tree/shrub <br />i Diversity Standard for No-Topsoil units is voluntary <br />Additionally, two reference areas (snowberry sage vegetation community and oak mountain <br />shrub vegetation community) were sampled for cover and production to establish vegetation <br />bond release standards. The snowberry sage vegetation community represents 83% of the pre- <br />Habitat Management, Inc. 1 October 19, 2006