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• 2.05.4 <br />were graded to blend in with the surrounding topography. The <br />remaining building in the area was dismantled and hauled to the local <br />landfill. <br />Area 3 - Office Area <br />Work performed in this area included road obliteration, ditch <br />obliteration, cleanup around the old office area and cleanup around <br />the old substation area. The existing wood structures and other <br />rubbish in this area were hauled to the local landfill. <br />Area 3 (cont.) - Fan Site <br />work performed in this area was to backfill the shaft and to grade <br />the area. A concrete cap was installed over the shaft in 1986. This <br />cap was removed and the 8' diameter by 80 foot deep shaft was <br />backfilled. After the shaft was backfilled the concrete cap was <br />reinstalled and the fan site area was recontoured with material <br />available from the adjacent sound berm. The existing fence, tank and <br />other rubbish was hauled to the local landfill. <br />Area 3 (cont.) - Substation Area <br />The substation area was graded to blend in with the surrounding <br />• topography. Care was taken to work around the power pole that dead <br />ends in the substation area. This power pole belongs to DMEA and was <br />left in place. <br />Area 4 - Powder Magazine and Access Road <br />Work performed in this area included road obliteration and regrading <br />the powder magazine site. <br />Area 5 - Major Drainage Channel <br />The major drainage channel was constructed across the site. The <br />channel was constructed so site drainage was not allowed to enter the <br />channel. A geotextile fabric was installed under the channel's rip <br />rap lining. The rip rap lining was constructed of pit run with 6" to <br />9" cobbles or locally available rock of the same size. <br />During 1996 or 1997 the major drainage channel will be routed to the <br />sediment pond as shown on revised drawing 2.05.3(4)-2(a). The <br />segment of the drainage channel that by-passes the pond will be <br />reclaimed. The banks of the major drainage channel will be breached <br />at strategic locations so run-off from the site can enter the channel <br />as shown on the revised drawing. <br /> <br />128 (Rev. 6-28-96) <br />