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3. Describe the estimated topsoil depth and how topsoil will be salvaged, stockpiled and <br /> redistributed for the re-establishment of vegetation. Specify approximate topsoil <br /> redistribution depth: <br /> All woody material will be chipped, or roller chopped in place and salvaged and stored with topsoil. Twelve <br /> inches of topsoil would be stripped from the site and stored on the southern edge of the pad in piles 2 to 3 <br /> feet deep with stable slopes and be positioned to minimize exposure to wind and water erosion. The shallow <br /> mounded topsoil stockpiles will help maintain soil microbes and seed banks of viable seed for the native <br /> plants present on the site. Note: due to the position of the site along the windswept Cathedral Bluffs, an <br /> anchored mulch cover may be required on the topsoil stockpile (such as:jute netting or straw erosion <br /> blanket). <br /> Upon completion of drilling, approximately 12 inches of topsoil would be evenly redistributed across the site <br /> just prior to re-seeding. Topsoil replacement would occur in late August and September followed by <br /> re-seeding in late September prior to freezing soil surface. <br /> 4. Describe how drill holes will be plugged (refer to Rule 5.4 of the Rules for required <br /> abandonment procedures): <br /> After the shale coring, geophysical testing, and down-hole packer testing has been completed on <br /> the 3" core hole a vibrating wire piezometer will be installed. This unit will be used to measure <br /> water pressure in zones that indicated groundwater during drilling. The piezometers will be <br /> attached to 1" Sch. 80 PVC and lowered into the drill hole. Once in place the assembly will be <br /> grouted with a cement-bentonite mixture meeting the piezometer manufacturer's specifications. <br /> This will be terminated 24-36" above ground and protected by a welded steel bollard arrangement <br /> approximately 48" square. This will be painted juniper green. The 4" bore hole, once cored will be <br /> filled with grout and terminated 24" below finished grade. The pipe and guard will remain in place <br /> for a monitoring period expected to last 4 years. The reclamation will be considered "partial" until <br /> this well is plugged, abandoned, guard removed, and vegetation for this 16 sq.ft. location restored. <br /> 5. Describe how portals, adits, shafts, ponds, excavations, or other disturbances will be <br /> reclaimed (refer to Rule 3 and Rule 5 for specific reclamation performance standards). <br /> You may wish to contact the Division for closure specifications. <br /> The pond excavated for water containment and infiltration will be backfilled with the soil <br /> removed from the pond area. After compaction the area will be re-covered with the top <br /> soil set aside from the area. Then the entire area will be re-vegetated. This will be <br /> completed after the coring activities while vibrating wire piezometer monitoring is <br /> occurring. Piezometer monitoring will involve hand-held instruments walked to location <br /> with no vehicle traffic off of established roads. <br /> Form 2—Public File Page 9 of 14 <br />