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There is a pre-law highwall along the northeast edge of the permit azea from the gravel mine <br />camp azea to the south a distance of approximately 1000 feet. The highwall ranges from 20 feet <br />high to 40 feet high and is nearly vertical. No topsoil was ever salvaged from this activity. The <br />highwall is structurally stable but is not desirable for the post-mining land use. The intent is to <br />reclaim the highwall by a combination of backfilling and cutting from above the highwall. Cer- <br />fain areas are very close to the property boundary and must utilize backfilling. Since these areas <br />are pre-law, no commitment can be made to reclaim these areas without ongoing mining provid- <br />ing the funds and material to do the work. For this reason, the smoothing of these highwalls is <br />not shown on Maps F 1 or F2, however, through ongoing mining, the operator plans to do the <br />work. It is better for the landowner's property value to have the highwalls reclaimed. However, it <br />is not shown as part of the reclamation plan or bond for the 2004 amendment. <br />Of the 28.7 disturbed acres in the north mine azea, 2.8 acres will remain as ponds and 2.8 acres <br />will remain as roads, therefore, only 23.1 acres will require the substitute fines. Using a 3" aver- <br />age thickness, this requires 9317 cy. This volume will have been stockpiled at either of the two <br />locations (Piles #1 and #4) and is also the volume that will be required to be spread at the end of <br />the mine life. <br />Therefore, at the end of the mine life, final grading will be needed on 23.1 acres, followed by <br />topsoil (substitute fines) replacement and revegetation on the same areas. All portable buildings <br />and tanks will be removed except for the shop/office building constructed neaz the pit entrance. <br />This building and associated parking azea will remain for commercial use after reclamation. <br />The following table shows the tasks for full reclamation of the gravel pit azea. <br />Gravel Pit Reclamation Timetable <br />Task # Description Time Needed <br /> in months <br />1 Regrade and reseed old 110 azea while mining is active in 3.0 <br /> north reserve azea. <br />Alma Placer 7/03 42 <br />