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(1.5 feet) material will be replaced on all reclaimed areas, followed by re- seeding with the Rangeland Seed <br />Mixture (Table 55). Reclaimed areas will be managed in the same way as other reclamation, with regular <br />inspections and maintenance to identify and control any excessive erosion, and spraying, as necessary, <br />consistent with the approved Weed Management Plan to control noxious weeds. <br />TCC's bond reclamation cost estimate for the CRDA Expansion takes into account the consideration that bond <br />monies have already been posted for the existing Refuse Pile, which includes the entire eastern side <br />(approximately 40 acres) that will be redisturbed by the proposed CRDA Expansion. This existing bond <br />(amount corresponding to acres to be redisturbed is approximately $360K), along with the calculated bond <br />coverage for a 50 acre area (approximately $380K), addresses bonding for the initial area of disturbance, as <br />shown on Drawing C -102 in Exhibit 26C. This initial bonded area includes redisturbance of the eastern side of <br />the existing RDA (approximately 40 acres), the initial CRDA bonded disturbance area (approximately 30.3 <br />acres), haulroad disturbance (approximately 2.4 acres), stockpile and ditch disturbance (approximately 9.4 <br />acres), stockpile access corridors (0.4 acres), and a bonded buffer of approximately 7.5 acres to address any <br />minor unplanned disturbances. With a total facility life of approximately 14 to 20 years, it is anticipated that the <br />remaining 50 acres of the total CRDA expansion area of 140 acres will be bonded in two future bond increments <br />of approximately 20 -30 acres each (each increment will be approximately $150K - $230K, depending on size). <br />Bond Increment I was addressed in 2013, and Bond Increment II is anticipated to occur in the 2017 -2021 <br />timeframe. Consistent with the constraints inherent in a cumulative bonding approach, TCC will clearly <br />delineate bonded areas, will limit disturbance to those areas, and will work with the CDRMS to determine and <br />maintain adequate bond coverage for all activities. <br />Concerning the Fish Creek Tipple, no excess spoil or underground development waste will be generated in <br />connection with the operation. Thus, the requirements of this section and Rule 4.09 are not applicable. <br />(9) Return of Coal Mine Waste to Abandoned Workings <br />(a) Each plan shall describe the design, operation and maintenance of any proposed coal <br />processing mine waste disposal facility, including, flow diagrams and any other necessary drawings and maps, which <br />must meet the standards of 2.10, for the approval of both the Division and the Mine Safety and Health <br />Administration in accordance with 4.11.3. <br />(b) Each plan shall describe the source and quality of waste to be stored, area to be backfilled, <br />percent of the mine void to be filled, method of constructing underground retaining walls, influence of the <br />backfilling operation on active underground mine operations, surface area to be supported by the backfill, and the <br />anticipated occurrence of surface effects following backfilling <br />(c) The applicant shall describe the source of hydraulic transport medium, method of <br />dewateringthe placed backfill, retainment of water underground, treatment of water if released to surface streams, <br />and the effect on the hydrologic regime. <br />(d) The plan shall describe each permanent monitoring well to be located in the backfilled <br />area, the stratum underlying the mined coal, and gradient from the backfilled area. <br />(e) The requirements of 2.05.3 shall also apply to pneumatic backfilling operations, except <br />where the operations are exempted by the Division from requirements specifying hydrologic monitoring <br />TCC returns the thickener underflow generated at both Washplants I and II to the abandoned and sealed <br />underground mine workings. When Washplant I initially began operations, the thickener underflow was <br />partially dewatered using a filter- press, and this material was then combined with the coarse refuse and hauled to <br />the Refuse Pile for placement. Due to handling and placement problems, TC modified the fine refuse handling <br />method, and began pumping the thickener underflow into the abandoned mine workings in the Southwest <br />Mining District (SWMD), as opposed to mixing it with the coarse refuse for placement on the Refuse Pile. <br />TR12 -81 2.05 -97.6 06/22/13 <br />