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4. OVERBURDEN SAMPLING - REGRADED AREAS <br />• Requirement <br />As outlined in Permit Exhibit 6, Geological Information, Item <br />#4, Overburden Sample Program of the Colowyo Permit, a <br />regraded overburden sampling program is required at a density <br />of one sample per five acres of regraded area. <br />Response <br />Colowyo continues to utilize the "State Plane Coordinate <br />System" as the grid system for sampling regraded overburden <br />areas. Refer to Exhibit 10, 1994 Annual Report Map, for the <br />location of the sampled areas. Use of the intersecting lines <br />provide a uniform square grid system of approximately five <br />acres per square. During 1994 a total of 26 regraded area <br />samples were taken representing approximately 130 acres of <br />additional regraded overburden area. The analyses are <br />• included in Exhibit 9. Overburden - Reclaimed Area <br />Information. <br />No suspect materials were encountered during the sampling <br />program. <br />10 <br />