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Construction of the coal mine waste pile will be a phased project with placement of gob starting <br />on the western edge of the pile, and progressing eastward. At the time of this writing, the <br />majority of the gob footprint has been cleared of all organic material and topsoil. <br />No gob was placed within 50' of the underdrain location until the underdrain approved by TR -80 <br />was installed. Page 4b showed the underdrain buffer zone location. Installation of the <br />underdrain was completed during the first week of January 2014 so the buffer zone has been <br />removed from page 4b. <br />Minor Revision 139 approved the placement of gob in the westernmost section of the pit. <br />Technical Revision application 93 approved the placement of gob in the easternmost section of <br />the pit. Both areas shown on page 4b are drying areas. The purpose of the gob drying areas is <br />to provide an area for temporary storage of gob for drying purposes. End -dumped gob in the <br />gob drying areas will be worked with dozers and track hoes to assist in the drying process, and <br />when necessary mixed with coverfill material to expedite drying efforts. Mixing of coverfill <br />material with refuse will be managed to ensure the minimum amount of coverfill material <br />required to cover Gob Pile #3 will be reserved at all times. <br />Trenches will be cut through the end -dumped material to allow better drainage. Berms are <br />constructed in the low areas to collect the water and to keep water from flowing over the <br />outslopes of the pile. Temporary drain pipes are used to convey water that is collected in the <br />low areas to existing stabilized ditches. Water is not allowed to flow over the outslopes of the <br />pile. The pipes only function is to collect water that is draining from the coal mine waste <br />material. The pipes are not an integral part of the surface water control system. The coal mine <br />waste is placed and compacted in the active working area after it is sufficiently dried. <br />It is necessary to stockpile gob material during the winter months then place and compact the <br />stockpiled gob when weather allows. Stockpiling of gob will occur during winter months and <br />during inclement weather. Each year the Operator will strive to re -handle and compact <br />stockpiled material by October 30. <br />The gob material will be stockpiled in rows generally running from northwest to southeast. The <br />rows of gob will be placed in a controlled manner and overlap will be minimized so there is <br />space between rows to allow for drainage to the southeast. Page 4b provides general guidelines <br />on how the gob will be stockpiled in rows during the winter months. To the extent practicable, <br />rows of stockpiled gob will be placed in the drying area. The stockpiled rows of gob can be up to <br />60 feet wide. With 1.5H:1V side slopes the piles will be 20 feet high. The Operator may choose <br />to construct narrower rows. The area shown on page 4b is reserved for spring compaction. The <br />maximum amount of un -compacted gob in both refuse areas (Gob Pile #2 and Gob Pile #3) will <br />not exceed 425,000 cy total. <br />The drying area permitted under Technical Revision application 93 will be located in the <br />footprint of the 'west coverfill stockpile'. Before gob can be placed in that location, coverfill will <br />be relocated, and subsoil excavated to a depth of at least fifteen feet. Coverfill materials will <br />then be placed in the north or east coverfill stockpiles. Salvaged coverfill will either be placed it <br />stockpile, be used at gob pile #2, or used for contemporaneous reclamation efforts at gob pile <br />#3. <br />Volume XI <br />TR -93 - 4a - 09/10/14 <br />