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Zuber, Rob <br />From: Zuber, Rob <br />Sent: Friday, October 15, 2010 2:54 PM <br />To: 'George Patterson' <br />Subject: Marr Species diversity <br />George - <br />Regarding Marr Mine's reclamation success standard, the Division is able to consider a revision to the species <br />diversity standard based upon pre-mining (baseline) data. It will need to be submitted as a technical revision <br />and will be evaluated under the provisions of Rule 4.15.7(2)(d). <br />These are the major points for KCC to emphasize in their revision: <br />• The remaining reclaimed 8.29 acres at the mine site all fall within one premining vegetation <br />community, that of the alkali sagebrush community. At the time of vegetation sampling in <br />2009, KCC asked if just the alkali sagebrush reference area could be sampled since the <br />remaining reclamation is 100 percent alkali sagebrush community pre-law. The Division <br />agreed that just the alkali sagebrush reference area could be sampled for comparison to the <br />reclaimed area. <br />• The remaining 8.29 acres is a small portion of the entire reclaimed mine area, approximately <br />2% of the mine site disturbance. <br />• The majority of the mine site (98% by area) has achieved successful reclamation (see SL-04). <br />Please let me know if you need additional information. <br />Regards, <br />Rob <br />Rob Zuber, P.E. <br />Environmental Protection Specialist <br />Division of Reclamation, Mining and Safety <br />Coal Program <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Phone: 303.866.3567 x8113