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P~a~s So~.l~~el>9 ~~~ -oe~" <br />13,~vov od ~~` <br />oxygen into the mine, which could promote spontaneous combustion. Dr. Corley <br />does not want the hole to remain open. This issue will need to be further evaluated. <br />DMG will discuss this situation with the hydrologist to determine whether the drain is <br />necessary or if the drain remains, would a cap satisfactorily reduce the concern for <br />oxygen flow into the mine. <br />There was also a question regarding the soil around the large diesel fuel tank at the <br />south side of the facilities area (by the prep plant). The fuel tank in question was a <br />16,500-gallon diesel fuel/hydraulic oil (two cell) tank. The tank was enclosed and <br />contained by a concrete wall that was capable of holding the entire tank volume in <br />the event of a massive spill. Through normal spillage due to 20+ years of operation, <br />EFCI removed 150-200 cubic yards of soil, disposed of it in an off-site landfill and then <br />regraded the area. Dr. Corley wants assurance that aN potentially contaminated soil <br />has been removed. In this area, the Division requests that EFCI perform a soil sample <br />test to a depth of five feet (core test) and include sampling for oil & grease in the list <br />of constituents (as committed to by EFCI for all backfilled and regraded areas) to be <br />sampled. If the oil & grease test is positive further analysis for individual compounds <br />will be necessary. Analysis results will need to be submitted to the Division for review. <br />Drainage from the fuel tank area flows into pond 5. <br />Ponds 1 and 2 have been backfilled and regraded. The majority of the drainage <br />from the regraded ponds flows to the north and northwest and into pond 5. There is a <br />small area to the east of the ponds that is a small area exemption (SAE). A silt fence <br />has been installed to control drainage. EFCI provided an SAE demonstration to the <br />Division in conjunction with the 2002 midterm review. The silt fence was properly <br />installed and no sediment was leaving the site. <br />Magpie Creek Permanent Diversion -EFCI finished construction on the Magpie Creek <br />permanent diversion last year. The diversion runs along the south side of the facilities <br />area and empties into a large (approximately eight feet in diameter) culvert that runs <br />under the GEC access road. The current alignment of the diversion is consistent with <br />the proposed alignment. The diversion consists of a fairly level portion (0.5% - 1.0~ <br />slopes) with rock check dams every 100-150 feet and a steep section (5`yo+ slopes) <br />that has been armored with riprap. The diversion was constructed according to the <br />permitted design and the Division has received an as-built certification for the <br />diversion. There was an area about SO feet below the sharp bend in the diversion <br />(approximately where the diesel tank was) where concrete from the facilities <br />demolition was placed to help stabilize the area. EFCI will need to remove this <br />concrete unless EFCI provides a letter from the landowner requesting it to stay. If the <br />landowner requests that it stay, there are several pieces of rebar sticking out of the <br />concrete that need to be removed for safety reasons. <br />Coal Stockpile Area -The raw and clean coal stockpile areas have been regraded. <br />In the center of the area is the truck tunnel, which has been approved as a <br />permanent facility. The area drains to the south around the tunnels into pond 5 and <br />to the north directly into pond 5. The area appears to be graded properly to <br />eliminate any pooling of water. There is an area along the East side of the fence <br />(along the GEC access road) where the coal fines have not been cleaned or <br />covered with four feet of cover. EFCI needs to clean/cover these areas to comply <br />