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I~ <br />The proposed coal mine waste disposal area is geologically similar to SCC's <br />Cameo Refuse Disposal Area No. 2 which was constructed without underdrains. SCC's <br />coal mine waste was from a preparation plant so it was quite wet when placed in the pile, <br />however the phreatic surface did not buildup. This fact supports the Operator's position <br />that an underdrain system should not be required for this refuse pile. <br />In the event that seeps or springs are encountered during topsoil or cover material <br />stripping for the Munger Canyon Mine Waste Pile, subdrain(s) will be incorporated into <br />the permit. Coal Mine waste placement will be suspended if seeps or springs are <br />encountered, until sub-drain designs have been approved by the Division, and <br />constructed by the operator. <br />2.2.6 Access Control Features/Signs and Markers <br />Existing fences and signs will be used to control access to the permit area. All <br />• <br />signs will be of a standard design and will comply with 30 CFR 717.12 as described <br />later in this subsection. The signs will not be removed until after release of all bonds. <br />Access to and from Colorado State Highway 139 will be accordance with safety <br />requirements of the Colorado State Highway Department. <br />Pursuant to State and Federal regulations, signs and markers will be posted and <br />maintained by the Operator until after the release of all bonds for the permit area. The <br />signs will be of durable material, of uniform size throughout the operation, easily seen <br />and read, and will conform to local ordinances and codes. The following signs or <br />markers will be posted in relation to the operation: <br />Mine and Permit Identification Sign <br />- posted at the only entrance to the permit area from State Hwy 139 <br />Perimeter Markers <br />- posted along areas affected by surface operations or facilities <br />Stream Buffer Zone Markers <br />- an area 100 feet on either side of East Salt Creek (within the <br />permit area) will be posted. None of the ephemeral channels in the <br />permit area will be posted. <br />Topsoil Markers <br />- posted at each topsoil stockpile <br />\J <br />Permit Renewal <br />2-22 <br />09/03 <br />