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The maintenance and operation attd removal requirements for each of the sediment ponds and treatment <br />• facility are similar. Each will be discussed below separa[el}•. <br />Treatment Facility B receives runoff from the tipple area, including the Belt Out Back coal stockpile. <br />Upstream of the treatment facility is a clean-out sump, which captures wash down materials from the tipple. <br />This sump is cleaned out periodically throughout the year. The treatment facility itself is comprised of an H <br />shaped pond, which discharges to Foidel Creek. <br />TCC will survey the facility every three years, with the date of the 1999 permit renewal being year one. <br />Therefore, the survey will be conducted during 2001. The survey will be used to determine if sediment <br />removal is required, with the criteria that sediment accumulation increased by 40% from the prior survey. ]f <br />sediment removal is required, the dredged material will be brought to the refuse pile or pit for disposal. <br />During the NPDES visits the flume will be visually inspected to determine that it is working correctly. <br />Repairs, such as leveling, ensuring free discharge and removal of accumulated sediment in measuring <br />devices and will be done on an as needed basis. <br />The facility will be removed when it is rto longer needed. The H shaped pond will be backfilled with <br />adjacent material and graded to blend in with the surrounding topography. <br />In reference to Pond C, the structure control runoff from the old train loadout area. During its history, the <br />pond discharges infrequently, attd holds a minor amount of water during spring runoff and only holds a <br />minor amount of water during spring runoff. TCC will survey the pond as per the schedule given for <br />Treatment Facility B. The same criteria given above will be used to determine if the pond requires cleaning. <br />If so, [he material will be removed and hauled to the refuse pile or pit for disposal. <br />• During the quarterly pond inspection, tite outlet works of the pond are viewed to determine if any <br />maintenance work is required. Notes are made and the appropriate maintenance required. Notes are made <br />and the appropriate maintenance performed. <br />When the pond is longer required it will be removed from the site. The outlet works will be removed and the <br />embankment pushed in to blend in with the surrounding topography, topsoiled and seeded. <br />Pond D controls runoff from a portion of the surface facilities, discharge from the pit, refuse pile, and <br />underground mine discharge. TCC will survey the pond as per the schedule given above. The same criteria <br />given above will be used to determine if the pond requires cleaning. if so, the material will be removed and <br />hauled to the refuse pile or pit for disposal. <br />The pond is visited during the NPDES sampling and the flume is viewed to determine if i[ is functioning <br />correctly. Any problems are noted and repairs made as needed. Also, there is an MSHA pond, subject to <br />weekly inspections. The outlet works are inspected and repairs made as necessar}; this is typically removing <br />vegetation from orifices. <br />The pond will be removed when it is no longer needed. The embankment will be graded in and blended in <br />with the surrounding topography and the works removed. The stone in the emerging spillway may be <br />reclaimed or placed in the pond excavation as part of the backfill. The area will be topsoiled and seeded. <br />In reference to Pond E, it controls runoff from a segment of the surface facilities prior to discharging to <br />Foidel Creek. TCC will survey the pond as per the schedule~iven above. The same cri[eriagiven above <br />will be used to determine if the pond requires cleaning. If so, the material will be removed and hauled to the <br />. refuse pile or pit for disposal. <br />APPR®9f~ED APR 1 ~ 2DDD <br />TR 00-35 2.05-76.] 03/28/00 <br />