Laserfiche WebLink
The pond is visited during NPDES sampling, and the v-notch weir is inspected to deternne if it is functioning <br />correctly. The pond is also inspected quarterly to determine if it is functioning correctly and to assess the condition <br />of its embankment and spillways. Repairs are made on an as-needed basis. The pond will be removed when it is <br />no longer needed. The outlet works will be removed and the embankment graded back into the pond excavation, <br />• the azea will be final graded so that it blends with surrounding area, and the regarded azea will be topsoiled and <br />seeded. <br />Pond F receives runoff from the surface facilities, reclaimed surface mine, spoil springs, and underground mine <br />discharge. TCC will survey the pond in accordance with the previously outlined schedule. The same criteria given <br />will be used to determine if the pond requires cleaning. If so, the material will be removed and hauled to the refuse <br />pile or pit for disposal. The pond is visited during the periodic NPDES sampling, and the condition of the <br />measuring device is noted. The current measuring device is a cutthroat flume located upstream of the road culvert. <br />Problems were encountered with the existing weir, and the weir was replaced with the 12-inch cutthroat flume to <br />assure accurate flow measurement. Repairs are made on an as-needed basis. The pond will be removed when it is <br />no longer needed. The embanlanent will be graded in and the outlet works removed. The stone in the spillway will <br />either be reclaimed or placed in the pond excavation as part of the backfill. The area will be graded to blend with <br />the surrounding topography, then topsoiled and seeded. <br />Pond G receives runoff from a part of the surface facilities and the reclaimed surface mine. TCC will survey the <br />pond in accordance with the previously outlined schedule. The same criteria given will be used to determine if the <br />pond requires cleaning. If so, the material will be removed and hauled to the refuse pile or pit for disposal. The <br />pond will be removed when it is no longer needed. This is also an MSHA pond and subject to weekly inspections. <br />The outlet works are inspected and repairs made as required. The embankment will be graded in and the outlet <br />works removed. The stone in the spillway will either be reclaimed or placed in the pond excavation as part of the <br />backfill. The azea will be graded to blend with the surrounding topography, then topsoiled and seeded. <br />Pond T receives runoff from the magazine and storage yard area. TCC will survey the pond in accordance with the <br />previously outlined schedule. The same criteria given will be used to determine if the pond requires cleaning. If <br />• so, the material will be removed and hauled to the refuse pile or pit for disposal. The pond is visited during the <br />NPDES 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 azea 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 Dewtareing Borehole. The water supply pumps <br />are set within the dewatering wells immediately above the top of the coal seam in sealed mine workings in the <br />Western Mining District. Electricity is supplied by the powerlines shown on Map 39, Powerline Location. Each <br />borehole is capable of discharging up to 500 gpm of mine water. Discharge through the boreholes will occur on an <br />alternating basis, with the potential of discharging simultaneously. <br />n <br />LJ <br />MR07-216 2.05-76.2 05/28/07 <br />