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C, <br />floors within the affected azea throughout the mining and reclamation process <br />(4.24.2). <br />5. An environmental monitoring system has been installed, and shall be <br />maintained and operated by the permittee on all alluvia] valley floors during <br />surface coal mining and reclamation operations and continued until all bonds <br />are released in accordance with Rule. 3 (4.24.4). <br />Oak Creek AVF <br />During the review of the original application for the Edna Mine permit, the Division <br />determined that Oak Creek was an AVF. P&M applied for, and the Division approved <br />Permit Revision No. 3 to declassify Oak Creek, where it is immediately adjacent to the <br />eastern permit boundary, as an alluvial valley floor as defined in Rule 1.04(10). The area <br />that is no longer classified as an AVF extends from the southeastern permit boundary <br />north to and including the Rout[ County Road 179 crossing over Oak Creek. This area <br />includes the NE'/a Section 19; NW'/a Section 20; W'/zSW'/a and W'/:SW'/aNW'/a Section <br />17, Township 4 North, Range 85 West of the 6th Principal Meridian. The limits of <br />declassification are defined on Exhibits 4.6-10 and 4.6-11 in the Edna Mine permit <br />application. Portions of Oak Creek upstream and downstream of this azea remain a <br />designated AVF. The Edna Mine would have little or no impacts on the Oak Creek AVF <br />because the AVF is upgradient from Edna's ground water flows and would receive only <br />occassional, neglible surface water runoff from the mine. <br />Edna Mine 29 Permit Renewal No. 4 <br />