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1 ' casing that will be cemented in place, prior to beginning the hole. This practice will allow for the drill hole, in the unlikely event necessary, to be shut off at any time. The above described plans will assure that all encountered ground water will be contained within the confines of the drill pad. Well Completion ' Several of these exploration holes may be converted to hydrologic monitoring wells. In the event a monitoring well is completed at a site, the well completion report will be forwarded to the appropriate agencies. It is anticipated that wells will be constructed with 20 slot screen and 8/12 silica sand or a pre- packed, stainless steel well screen. A bentonitic plug will be placed above and below the screened interval to prohibit vertical ' migration and cross contamination of aquifers. Figure 2, Typical Monitor Well Completion, illustrates the typical completion method. Once the well is no longer required, it will be grouted from the bottom to top with a cement grout. The casing will be cut off two to three feet below the ground surface, and the surrounding soil will be used to backfill the void left by the ' removal of the casing, Reclamation ' The reclamation of the sites will typically progress shortly after completion of each hole. Reclamation will consist of drill ' hole abandonment, filling in of mud pits, regrading as needed, topsoil re-distribution, and seeding. All reclamation activities will be completed by the end of each fall drilling season, unless weather conditions prohibit. If this occurs, the reclamation work will be completed the following spring when ground conditions permit. In any case, all reclamation activities will be completed by the end of June, 1998. Sediment control measures ' for the drill pads and topsoil stockpiles will remain in place until reclamation of site is completed. ' For sites constructed on cropland, the seeding mixture and process will be developed in consultation with the appropriate landowner. For pastureland areas, sites will be reclaimed using the following seed mixture totaling 17.0 PLS lbs per acre: ' Smooth Brome (7.0 PLS lbs/acre), Intermediate Wheatgrass (6.0), Crested Wheatgrass (3,0), Alfalfa {1.0). ' Drill Hole Abandonment Drill holes which are not converted to monitor wells will be abandoned as illustrated in Figure 3, Drill hole plugging method. Drill hole abandonment will be conducted in accordance with Rule 4.07.