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5.0 Unsuitable Spoil Mitigation Plan <br />In the event that any one spoil sample result exceeds the limits, WFC will implement the <br />Unsuitable Spoil Mitigation Plan listed below. <br />If one or more parameters fall within the unsuitable range at a given grid point, a three -part <br />mitigation plan will be implemented. <br />1. The area around a suspect hole will be sampled on a closer spacing interval in order <br />to better define the lateral extent and variability of the unsuitable material. This <br />sampling will be called the 2 "d Phase sampling and the interval is one hole per 50 feet <br />distance around the bad point in all directions for prime farmland, and one hole per <br />100 feet distance around the bad point in all directions for reclaimed irrigated <br />pastureland and dryland pasture. <br />2. If 2 nd phase sampling shows an exceedance, follow -up sampling will take place to <br />delineate the area of exceedance. Delineated areas of exceedance that are larger <br />than 0.1 acres for prime farmland, 0.25 acres for reclaimed irrigated pastureland or <br />0.50 acres for dryland pasture will be remediated. <br />3. For remediation, any area identified above which exceeds the acreages stipulated <br />above for unsuitable surface spoil material will be placed at least eight feet below the <br />final soil surface. New soil material will be used in its place. This material will be <br />tested according to the original grid (1 hole per 5 acres) to confirm its suitability. <br />4. If none of the above procedures satisfactorily mitigate a certain problem, the Division <br />will be notified and recommended actions will then be implemented. <br />Any remedial backfilling and /or burial will be completed in a manner that results in final surface <br />elevations and topography that are consistent with the approved reclamation plan and are <br />compatible with the post mining land use for the remediated area. <br />Revised September 2010 (PR 06) 2.05.4(2)(d) -9 <br />