Laserfiche WebLink
ten feet below the ground surface to support a cement plug or other media to within three feet of <br />• the ground surface. Permanent sealing of holes, wells, etc. completed in aquifers will be sealed <br />using cement or other suitable sealant. The sealant will be placed in the hole from the bottom to <br />within ten feet of the surface. Surface plugs used to complete the permanent sealing of holes, wells, <br />etc. will be selected and used only if the OMLR gives prior approval. All associated surface sites <br />v~ill be reclaimed following the cessation of mining. WFC will submit to the OMLR a proof of <br />compliance report containing pertinent information on permanent sealing of any hole, well, etc. within <br />60 days of completion of such activities. <br />Ground Water Quantity. The backfilling and grading of spoil materials is accomplished by dozers <br />and trucks (see Section 2.05.4(2)(c), Backfilling and Grading). Procedures outlined in Section <br />2.05.4(2)(c) will insure the eventual resaturation of the disturbed areas (pits) by creating greater <br />porosities and hydraulic conductivities due to increased void volumes. In addition to backfilling <br />methods, topsoiling and reclamation plans outlined in Section 2.05.4(2)(d), Topsoil (Redistribution), <br />and Section 2.05.4(2)(e), Revegetation, v~ill enhance the potential for establishing reclaimed areas <br />that exhibit similar infiltration rates and recharge capacities to premining conditions. Reseeding and <br />mulching of redistributed topsoil v~ill augment moisture retention and infiltration rates ofthe reclaimed <br />• areas. Mechanical manipulation of the regraded spoil and topsoil (chisel plowing, disking and <br />ripping) v~ill further aid the percolation of soil moisture downward toward the water table. <br />Ground water inflow to the pits v~ill be removed by pumping the v~rater into a sediment pond. Design <br />criteria for sediment pond 007 is presented in Section 2.05.3(3), Mine Facilities. The pond is <br />designed to contain runoff from a 1 Qyear, 24-hour storm event plus additional storage capacity for <br />water pumped from mine pits. <br />Surface WaterQuality. The sediment pond is designed to prevent additional contribution of sediment <br />to stream flow outside the permit area and incorporates detention times sufficient to ensure that all <br />applicable effluent standards will be met. The pond is currently planned to be removed and <br />reclaimed following the completion of mining. <br />Plans for sampling overburden and topsoil to identify potentially deleterious materials have been <br />developed and are outlined in Section 2.05.4(2)(d) Topsoil (Redistribution). As previously mentioned, <br />investigations have determined that no acid or toxic materials will be replaced in the upper four feet <br />• (REVISED 32196) 2.U5.6(3)(b)(V) - 2 <br />