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regazding planned blasting operations is located in Tab 14 of the permit application package. ' The proposed blasting schedule indicates that blasting wii.l be carried out in two sepazate areas. Area No. 1 covers approximately 243 acre:. of mine pit azea in Section 17 that will be blasted as described above. Area No. 2 covers roughly 58 acres along the Road B corridor in Section 8, which may involve blasting to facilitate road construction. Since Area No. 1 is' in excess of 300 acres, the following fording is in order. The Division proposes to approve a blasting area in excess of 300 acres. (4.08.3(2)(b)(i)). Area No. 1, as designated in the proposed blasting schedule, encompasses roughly 350 acres. This area is the entire mining; area to be mined during the first permit term, and thus the ma~rimum area in which blasting will occur over a five yeaz period. Since dusturliano: limits and reclamation requirements have been designated by year, the m<uumum area that could be blasted at any given time would be limited to roughly 75 acres. Given those limitations, the Division finds that in allowing for .t designated blasting azea larger than 300 acres, there will be no anticipated adverse effects to public safety or the environment. VII. Bac)dilling and Grading Backfilling and grading plans will ensure that disturbed azeas are returned to "approximate original contour in a timely manner. Details of th~~ backfilling and grading plan, schedule, and post mine topography are located in Tabs 19 and 20 of the permit application package. i Seneca Coal Company will generate a topographic rnap, using photogrammetric methods, of backfilled and regraded areas on an annual basis. The map will be used to determine whether regraded areas aze consistent with the approved postmining topography. Tlie map will .be submitted to the Division in the Annual Reclamation Report. Any potentially acid- or toxic-forming spoil material will lie identified by sampling regraded spoil, and will be chemically treated or buried with a minimum of four feet of topsoil. By neutralizing and/or isolaturg any acid- or toxic-forming material from the surface, and mixing limited quantities of such material with much greater volumes of benign spoil material, any negative effects of problematic material will be ameliorated.', 1. The Division proposes to approve the applicant's plan for disposal of debris, acid-forming or toxic materials, ~x materials constituting a fire hazard in a manner designed to prevent contamination of ground or surface waters. A contingency plan Y~ nua~ 32 ~. ~~iY s, revs