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[n the sales area, only 9Q cubic yards of topsoil is available for reclamation. The topsoil will be used to reclaim the sediment pond, since it was excavated when the pond was constructed. V. Sealing of Drilled Holes and Underground Openings Exploration drill holes have been filled and sealed, with abandonment reports submitted (see MR-5) August 13, 1993. '['he Caldirola well is capped and will be used to monitor the water quality through the final reclamation phase. Well TPW-1 is also capped and used to monitor water quality and depth of the water table per Stipulation 18. The operator has backfilled the portal entries with 25 feet of material, according to approved MSHA standards. An MSHA inspection of the portals occurred on December 9, 1994. A sealed entry from the Twin Pines No. 1 Mine is located on the sales site behind the tipple's rear entrance. This portal was sealed in 1981 and the seal is located 25 feet into the entry. Upon tipple reclamation, this area will be permanently backfilled and graded into the reclaimed slope. Temporary measures have been taken by the operator to assure no public access can occur before final reclamation of the slope. The entrance has been boarded up at the Division's request. VI. Use of Explosives Twin Pines No. 2 has conducted occasional limited underground blasting activities only. No surface blasting is utilized or planned for the operation. With the cessation of mining, all explosives have been removed from the site. Prior to shutdown, the explosives were stored in a permitted and approved facility. VII. Disposal of Excess Spoil There is no excess spoil on the Twin Pines No. 2 portal or sales site. VII[. Coal Mine Waste Banks Underground development waste is disposed in a permitted area at the portal site near the northern terminus of the previously disturbed surface facility area. The waste pile sits atop a gravel blanket with an underdrain to divert flow from the base. Waste rock has been placed in four-foot lifts and compacted. The refuse site and designs for the pile can be seen on Map TP-5. The refuse pile is in the process of fmal reclamation. Technical Revision No. 6, approved in December 1993, outlined the approved plan for fatal reclamation of the refuse pile. Backfilling and grading operations at the pile began and ended in January 1993. The slopes of the pile were graded to 3 feet horizontal to 1 foot vertical and were covered with a minimum of two feet of suitable material as permitted (see page 85 of the application). Anew berm was constructed at the tce of the refuse pile. The access road to the refuse pile has been graded to serve as a drainage ditch. A surface water diversion ditch has been constructed azound the pile, geomat is installed along iu length, and riprap 26