Laserfiche WebLink
5.0 Unsuitable Spoil Mitigation Plan <br />In the event that any one spoil sample result exceeds the limits listed in Table 2.05.4(2)(d) -1, WFC will <br />implement the 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 mitigation plan <br />will be implemented. <br />1. The area around a suspect hole will be sampled on a closer spacing interval in order to better <br />define the lateral extent and variability of the unsuitable material. This sampling will be called the <br />2nd Phase sampling and the interval is one hole per 50 feet distance around the bad point in all <br />directions for }Prime #Farmland (Zones 3 & 8), and one hole per 100 feet distance around the <br />bad point in all directions for reclaimed irrigated pastureland and drylamd pastumnaa;2.rime <br />farmland.- <br />2. If 2nd phase sampling shows an exceedance, follow -up sampling will take place to delineate the <br />area of exceedance. Delineated areas of exceedance that are larger than 0.1 acres for irrte <br />Fan. iI md irriaated cropland, 0.25 acres for reclaimed irrigated pastureland or 0.50 acres for <br />dryland pasture will be remediated. <br />3. For remediation, any area identified above which exceeds the acreages stipulated above for <br />unsuitable surface spoil material will be placed at least eight feet below the final soil surface. <br />New spoil material will be used in its place. This material will be tested according to the original <br />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 will be <br />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 elevations <br />and topography that are consistent with the approved reclamation plan and are compatible with the post <br />mining land use for the remediated area. <br />WFC will maintain and periodically reviewthe existing quality control program used to evaluate overburden, <br />interburden, and spoil handling activities at New Horizon Mine. WFC will maintain records of the sampling <br />results for each logical reclamation unit. These records will be kept on file at the mine site and will be <br />August 2013 (PR -08) 2.05.4(2)(d) -11 <br />