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progress of grading activities and any settling of graded areas. In addition to visual monitoring, <br />topographic maps will be generated using photogrammetic methods of the areas backfilled and graded on <br />an annual basis. These topographic maps will be evaluated to determine if the final graded topography is <br />consistent with the proposed postmining topography and land use, and submitted in the Annual <br />Reclamation Report. Should a substantial grading problem be detected, CDMG shall be notified and shall <br />be presented with a proposed remedial plan. <br />The probability of slides occurring is relatively low; however, at any time a slide occurs which results from <br />mine-related activities and which may have a potential adverse effect on private property, health, safety or <br />the environment, SCC will notify CDMG of the occurrence of the slide and the remedial measures proposed <br />to be undertaken. <br />Waste materials are not used for fill. No excess spoil or waste storage areas are anticipated as a result of <br />mining at Seneca II-W. Two temporary pond excavation waste stockpiles (PEWS) were located near the <br />old dragline erection site -they were mined through during coal removal from the A Pit. These <br />stockpiles were constructed from subsoil material excavated from the Pond 006 footprint and approved in <br />TR-07. These stockpiles will be seeded with the approved temporary reclamation seed mix for interim <br />stabilization. The temporary pond excavation waste stockpiles will be used to obtain the postmining <br />topography in the immediate area. Mining waste materials consisting of the immediate top and bottom coal <br />seam, and carbonaceous shales, when encountered, are buried under a minimum of four feet of <br />noncombustible material (see Tab 21). Non-coal wastes such as greases, lubricants, paints, flammable <br />liquids, garbage, lumber, and other manmade combustibles are stored in appropriate containers in the <br />vicinity of the shop building. The location of the temporary storage area for these non-coal wastes is <br />shown on Exhibit 13-1, Facilities Map. These non-coal wastes will be disposed of off-site by a private <br />licensed contractor, <br />Postminina Tooooraohv <br />General. Backfilling and grading of the spoil material will produce a postmining topography similar to the <br />original land form. The design of the postmining land form utilizes existing data. The purpose of the <br />design is to construct a postmining land form which is adequate for defining drainage patterns and for <br />review and analysis by regulatory agencies. <br />The design requires adjusting the original land farm elevations for the removed coal seam and the swell of <br />the overburden. Data necessary to develop the new elevations and calculate volumes are overburden and <br />PR-05 5 Revised 01/06 <br />