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spill. It should be noted that EFCI does not utilize or produce any materials known to be toxic <br />or hazardous in any mining, processing, or related operations. All facilities where fuel. <br />lubricants, or liquid wastes were stored have been demolished and the areas reclaimed. In the <br />unlikely event of a liquid spill. these measures would limit the spread of spilled liquid and <br />facilitate 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 Facilities". <br />In the event of a liquid spill, EFCI will implement the specific control, reporting, and clean up <br />measures described in the current SPCC Plan. These measures have been specifically <br />designed to effect compliance with all applicable State and Federal regulations. <br />Sealine Mine OpeninsiS and Exploration or Other Boreholes <br />Upon completion of mining, all underground openings including portals, drill holes, <br />boreholes and wells will be permanently sealed unless they are to be utilized in conjunction <br />with ongoing monitoring or approved post -mining land uses. All of Southfield's mine portals <br />were permanently sealed during reclamation activities as described below. <br />The five (5) main facility portals and the south fan portal were permanently sealed upon <br />completion of mining to prevent access and provide a hydrologic seal to prevent surface <br />drainage from entering the underground workings. Mine portals were sealed by filling the <br />entries with compacted, incombustible material for a distance of at least 25 feet in accordance <br />with 30 CFR 75.1711. In order to ensure the long term integrity of the portal seals, EFCI left <br />adequate barrier pillars in adjacent areas, and utilized cribs and posts as necessary inby the <br />portal seals to prevent significant caving which might affect the seals. Once the portal seals <br />were constructed, the remaining portions of the mine entries between the portal seals and the <br />portal openings were filled with overburden material and demolition debris in conjunction <br />with subsequent backfilling activities. <br />During construction of the main facility portal seals, one portal seal was equipped with a 4 <br />inch diameter drain pipe that extended along the mine entry to the mine portal and then <br />2.05.4-29 Revised I0/28/15 <br />MR -69 <br />