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<br /> <br />was associated with reclamation of the water pipeline. <br />The 1981 revegetation program encompassed minor disturbances <br />consisting miscellaneous roadways, Steven's Gulch wellfield <br />structures, and the scale house and truck scales near the truck <br />dump station. <br />Construction of the west ridge waste disposal area was initiated in <br />July, 1983. Lands available for reclamation at this site have been <br />seeded and mulched on an approximately annual basis since <br />development began. The west ridge waste disposal site encompasses <br />approximately 3.37 acres. Approximately 2.02 acres of this site <br />are currently reclaimed. Reclamation of the old waste disposal <br />site near ponds 1 and 2 was completed in November of 1983. <br />Vegetation was established on this 0.86 acre site the following <br />spring. Development of the east ridge waste disposal site was <br />initiated in 1983 in conjunction with development of the west <br />material stockpile established to accommodate material being <br />generated from the west ridge development. <br />Reclamation of the Orchard Valley West Mine fill slopes and <br />associated disturbance was completed by the fall of 1987. Slope <br />instability necessitated the relocation of topsoil at the mine site <br />and subsequent reseeding and mulching of both the new pile and the <br />old pile footprint. This was completed in the fall of 1990. <br />Several small topsoil piles exist throughout the various <br />disturbance areas on the mine site. Those piles projected to <br />remain undisturbed for longer than five years are seeded with the <br />permanent seed mixture. Those piles projected to be redistributed <br />within five years are seeded with the temporary seed mixture. <br />eeed Mixture <br />Several seed mixtures have been utilized at the Orchard Valley <br />mine. The following tables summarize the various seed mixes used <br />historically and currently to stabilize disturbed areas. <br />Table 1. Seed Mixture #1 - 1977 reve4etation Proclram <br />Seeding Rate <br />Species Origin (PLS #/acre) <br />Western <br />Wheatgrass Native 8 <br />Crested <br />Wheatgrass Intro. 4 <br />Pubescent <br />Wheatgrass intro. 10 <br />Intermediate <br />Wheatgrass Intro. 8 <br />