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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Departrnen[ of Natural Resources <br />1373 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 8664567 <br />FAX: (303) 832.8106 <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />S~FETT•SCIENCF <br />Wayne R. Erickson <br />Principal Environmental Scientist <br />Habitat Management, Inc. <br />14 Inverness Drive East, Suite G-228 <br />Englewood, CO 8-112 <br />Subject: The Pittsburg & Midway Coal Mining Co., Edna Mine, <br />Sampling Plan Clazifications <br />Deaz Mc Erickson: <br />Thank you for yow letter of March 23, 2006, subject as above. <br />em owem <br />Govennr <br />Russell George <br />Executive Dimtlor <br />RorwW W. CaRanY <br />Division Director <br />Natural Rewurce TtusOee <br />Vegetation Final Bond Release <br />Staff personnel of the Division of Minerals and Geology (Division) have reviewed the plan. <br />Please incorporate the following comments in the plan. <br />1. The appropriate adequacy formula needs to be applied to the data as defined in the Division's <br />"Guideline Regazding Selected Coal Mine Bond Release Issues" (April 18, 1995, pages 20 and <br />21). If the data shows that the sampled parameter is less than the reclamation standard, please use <br />the adequacy formula shown on page 20 of the referenced guideline. If the reclaimed azea sample <br />data equals or exceeds the reclamation success standard, the adequacy formula shown on page 21 <br />of the reference guideline is applicable. <br />2. Sub-shrub species should not be included in the stem counts for Woody Stem Density <br />reclamation success determinations. <br />Other review comments aze: <br />Sampling is planned to be conducted during late June through September 2006. This timing is <br />planned to coincide with the growing season. The sampling plan is in agreement with the section <br />4.4.4.3 of the permit. The 2006 sampling plan is similaz to the 2005 vegetation sampling plan as <br />well. Pittsburg and Midway Coal Mining Company 2006 vegetation monitoring plan maintains <br />consistency with the approved monitoring plan found in permit section 4.4.4.3 and remains <br />consistent with the vegetation sampling plan agreed upon in 2005 (with the comments). <br />Office of 0f8ce of Colorado <br />Mined Wnd Reclamation Active and Inactive Mines Geological Survey <br />