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Mid-Term Review Marr Strip Mine Introduction This document presents the results of the Otvision's mid-term review of Kerr Coal Company's Marr Strip Mine. This mid-term review was conducted to fulfill the requirements of Rule 2.08.3, 2.06.2(9), 2.06.3(4), 2.06.5(3), 2.06.1(5) and 3.02.2(4). Rule 2.08.3 requires that the Oiviston conduct a review of each permit issued, prior to Its mid-term Based on this review, for good cause shown, the Division may require reasonable revision or modification of the permit provisions to ensure compliance with the Act and Regulations. Rules 2.06.2, 3, 5 and 7 require that experimental practices, mountaintop removal variances, variances from AOC, and variances from contemporaneous reclamation be reviewed by the Division where applicable. The Marr Strip permit does not have any operations under these categories. Rule 3.02.2(4) requires that the Division review the amount of the bond and the terms of acceptance of the bond every 2 1/2 years. The mid-term review consisted of a detailed review of the Marr Strip findings document and permit application to identify any Items that may have been overlooked during the initial review. The Division also reviewed all subsequent revisions and stipulation responses to ensure that all permit commitments and conditions were being followed. Hydrologic monitoring data was reviewed in con~unctlon with the review of the application to assess the adequacy of the monitoring plan and discussion of hydrologic impacts. finally, the 0lvision conducted an on-site Inspection of the mine in addition to a detailed review of past inspection reports to ensure consistency of the mine plan with field conditions and to identify any potential on-the-ground problems requiring attention. This document is organized as follows: Section I includes a sunmary of our decision to require revisions with regard to the mid-term review required under Rule 2.08.3. Section IA includes a 1l sting by category of what items need to be revised, a rationale for requiring these revisions, and timetables for completing these revisions. Section IB presents a summary of the status of the stipulations attached to the Marr Strip Permit C-006-80 and any revisions required with regard to the stipulations. Section IC sunmarizes the revisions to the permit processed to date and the action taken by the 01v1sion. Finally, Section II presents the results of the bond review required under Rule 3.02.2(4).