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4. OVERBURDEN SAMPLING -REGRADED AREAS <br />• Requirement <br />As outlined in the CDMG Permit Application Exhibit 6..GeoloEical Information, Item #4, <br />Overburden Sample Program of the Colowyo Permit, a regraded overburden sampling program is <br />required at a density of one sample per five acres of regraded azea. <br />Colowyo continues to utilize the "State Plane Coordinate System" as the grid system for sampling <br />regraded overburden azeas. Refer to Exhibit 9. 1999 ,annual Report Man, for the location of the <br />sampled azeas. Utilization of the intersecting lines provides a uniform square grid system of <br />approximately five acres per square. During 1999 a total of 22 regraded azea samples were <br />obtained representing approximately 110 acres of additional regraded overburden azea. The <br />analyses are provided in Exhibit 8 - Re,~ded Overbrrden SamDlinat. <br />No suspect materials were encountered during the sampling program. <br />• <br />• <br />io <br />