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Location of drill holes/wells: A list of holes/wells that remain to be sealed are shown on Table 1 in <br />permit Section 2.05.4. <br />When mining is completed, all of Southfield's mine portals will be sealed to prevent access. Sealing <br />will involve either fabrication of concrete block walls located a minimum of 25 feet inby the portal <br />openings, or 25 linear feet of compacted noncombustible fill. The outside surface of the block walls <br />will be sealed with an MSHA approved sealant to prevent seepage of surface or groundwater through <br />the seal and the block walls will be keyed into mine openings. The void between the seals and the <br />portals will be backfilled with rammed compacted overburden material. An expanded discussion of <br />closure and reclamation plans is presented in Section 2.05.4, Reclamation Plan. <br />4.07-2 Revised 10,,28/15 <br />MR -69 <br />