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spill. It should be noted that EFCI does not utilize or produce any materials <br />known to be toxic or hazardous in any mining, processing, or related operations. <br />In addition, all facilities where fuel, lubricants, or liquid wastes are stored or <br />utilized, incorporate specific safety and containment provisions. In the event of a <br />liquid spill, these measures would limit the spread of spilled liquid and facilitate <br />effective cleanup operations. Specific control measures are described in greater <br />detail in Section 2.05.3, Operation Plan -Permit Area, under the subtitle, "Mine <br />Facilities <br />In the event of a liquid spill, EFCI will implement the specific control, reporting, <br />and clean-up measures described in the current SPCC Plan. These measures <br />have been specifically designed to effect compliance with all applicable State and <br />Federal regulations. <br />Sealing Mine Openings and Exploration or Other Boreholes <br />Upon completion of mining activities EFCI permanently sealed mine portals and <br />boreholes to limit access and prevent any groundwater discharge or mixing, or <br />surface water inflows to underground mine workings. <br />Mine portals were sealed by filling the entries with compacted, incombustible <br />material for a distance of at least 25 feet. In order to assure the long term <br />integrity of the portal seals, EFCI, as part of the MSHA Roof Control Plan, <br />maintained adequate barrier pillars in adjacent areas and utilized timber cribs, <br />posts or other appropriate means inky the portal seals to prevent significant <br />caving which might affect the seals. The void space between the portal seals and <br />the portal openings was backfilled with overburden material during backfilling and <br />grading of the portal bench and fate-up area. Amore detailed discussion of <br />specific provisions for sealing mine portals was previously presented in this <br />section under the subtitle "Sealing of Mine Openings". <br />EFCI also sealed the borehole used to transfer rock dust to underground workings <br />and has or will seal all other exploration drillholes and any monitoring wells which <br />will not be utilized in conjunction with ongoing monitoring or postmining land <br />uses. Sealing practices for boreholes and wells will be similar and will involve the <br />following activities: <br />MR-50 2.05.4-29 Revised -June 2003 <br />