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• imately 0.03 acres. Excavation will be done with a backhoe or dozer; topsoil material will be excavated first and stored for later replacement and revegetation. 4. Drilling Drilling and coring will be accomplished with Model 524 Portadrills, or like equipment, using mud, foam or airlift methods. Water for drilling will be hauled in a 3,000 gallon or similar water truck from the Southfield Mine water sources. Drill cuttings and fluids will be contained in the mud pits or within the drill pad area. A van-type geophysi- cal logging truck will run standard electrical induction, natural gamma and caliper logs on each completed drill hole. 5. Drill Hole Abandonment As each drill hole is finished, it will be sealed to within 10 feet of the surface with abandonment drill mud and drill. cuttings with the exception of the borehole site. During drilling, each hole will be monitored to detect any water producing zones. Any such aquifer zones will be sealed with . cement grout extending 10 feet above and below the limits of the estimated water producing zone. A cement plug will be placed above the abandonment fluid up to approximately 3 feet • below the ground surface. Soil will be used to fill the remaining distance along with a metal stake protruding through the surface for future drill hole identification. 6. Drill Site Rehabilitation All drill sites requiring pad leveling will be regraded after completion of drilling to their approximate original shape. Stored topsoil will then be redistributed over the disturbed area in preparation for revegetation. All mud pits will be allowed to dry prior to backfilling. During backfilling, nonsoil material will be first placed in the pit followed by topsoil, then graded to their approximate original configura- tion. Regrading and backfilling will be accomplished with a dozer and/or backhoe. 7. Drill Site Cleanup and Seedbed Preparation All trash and debris will be removed from each drill site and hauled to the Southfield Mine for disposal. Any remaining ,drill cuttings which are exposed at the sites will be spread such that they are unnoticable. Finally, the disturbed ground surface at each site will be scarified in order to provide a good seedbed. The maximum anticipated disturbance for each drill site is approximately 0.1 acres, resulting in • a total site disturbance of 0.3 acres.