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Sedimentation Pond E controls runoff from a portion of the surface facilities, including the main coal stockpile <br />area, prior to discharging to Foidel Creek. Design information for Pond E is provided in Exhibits 8E and 8S. TC <br />will inspect Pond E for sediment accumulations in the same manner as described for Treatment Facility B. The <br />same criteria will be used to determine if the pond requires cleaning. <br />The pond is inspected during the regular CPDES sampling, and the v -notch weir is inspected to determine if it is <br />functioning correctly. The pond is also inspected quarterly to determine if it is functioning correctly and to assess <br />the condition of its embankment and spillways. Repairs are made on an as -needed basis. The pond will be <br />removed when it is no longer needed. The outlet works will be removed and the embankment graded back into the <br />pond excavation, the area will be final graded so that it blends with surrounding area, and the regraded area will be <br />topsoiled and seeded. <br />Pond F receives runoff from the surface facilities, reclaimed surface mine, spoil springs, and underground mine <br />discharge. Design information for Pond F is provided in Exhibits 8I and 26. TC will inspect Pond F for sediment <br />accumulations in the same manner as described for Treatment Facility B. The same criteria will be used to <br />determine if the pond requires cleaning. If so, the material will be removed and hauled to the refuse pile for <br />disposal. The pond is visited during the periodic CPDES sampling, and the condition of the measuring device is <br />noted. The current measuring device is a cutthroat flume located upstream of the road culvert. Problems were <br />encountered with the existing weir, and the weir was replaced with the 12 -inch cutthroat flume to assure accurate <br />flow measurement. Repairs are made on an as -needed basis. The pond will be removed when it is no longer <br />needed. The embankment will be graded in and the outlet works removed. The stone in the spillway will either be <br />reclaimed or placed in the pond excavation as part of the backfill. The area will be graded to blend with the <br />surrounding topography, then topsoiled and seeded. <br />Pond G receives runoff from a part of the surface facilities and the reclaimed surface mine. Design information for <br />Pond G is provided in Exhibits 8H and 8J. TC will inspect Pond G for sediment accumulations in the same manner <br />as described for Treatment Facility B. The same criteria given will be used to determine if the pond requires <br />cleaning. If so, the material will be removed and hauled to the refuse pile for disposal. This is also an MSHA pond <br />and subject to monthly inspections. The pond will be removed when it is no longer needed. The outlet works are <br />inspected and repairs made as required. The embankment will be graded in and the outlet works removed. The <br />stone in the spillway will either be reclaimed or placed in the pond excavation as part of the backfill. The area will <br />be graded to blend with the surrounding topography, then topsoiled and seeded. <br />Pond T receives runoff from the magazine and storage yard area. Design information for Pond T is provided in <br />Exhibit 8Q, Pond T Certification. TC will inspect Pond T for sediment accumulations in the same manner as <br />described for Treatment Facility B. The same criteria given will be used to determine if the pond requires cleaning. <br />If so, the material will be removed and hauled to the refuse pile or pit for disposal. The pond is visited during the <br />CPDES sampling and the weir is checked to see if it is working correctly. Any problems are noted and repairs <br />made as needed. The pond will be removed when it is no longer needed. The embankment will be graded in and <br />the outlet works removed. The stone in the emerging spillway will either be reclaimed or placed in the pond <br />excavation as part of the backfill. The area will be graded to blend with the surrounding topography, then topsoiled <br />and seeded. <br />FCB Treatment Facility (Revised - MR07-216) <br />Three treatment cells were constructed for treating mine discharge water from the Fish Creek Borehole. The cells <br />location and cross-sections are shown on Maps 26 and 32, Fish Creek Borehole Area Facilities, and Access Road, <br />and Fish Creek Settling Pond Plan View and Cross Sections. The design for the culverts for the Fish Creek <br />Borehole Access Road is presented in Exhibit 8R. <br />The facility originally consisted of two adjacent dewatering wells. A water treatment system consisting of three <br />treatment cells, chemical feed stations (sodium hydroxide and sulfuric acid), a substation, access road and <br />powerlines, was subsequently added. The facility was modified in 2006, to replace the sodium hydroxide treatment <br />system with an electro -coagulation unit. In 2007, the inactive Fish Creek Ventilation Shaft was converted to a <br />dewatering installation to replace the inoperable Fish Creek South Dewatering Borehole. The water supply pumps <br />RN 17-07 2.05-76.2 02/15/18 <br />