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Mine Area <br />• Disturbance area requiring soil = 407.5 acres <br />Soil in stockpiles (Table 94.1) = 519.5 acre-feet <br />Tie Across Haul Road <br />Disturbance area requiring soil = 96.6 acres <br />Soil in stockpiles (Table 94.1) 69.7 acre-feet <br />Ry dividing the soil available by the area requiring soil replaced, we arrive at the 1994 <br />soil balance thickness of 0.7 feet for the tie-across haul road and 1.3 feet for the mine <br />area. <br />Revegeta[ion <br />Seeding and Planting. A total of 43.0 acres were permanently seeded in the south mine <br />block of the Seneca II-W Mine in 1994. Seedings included 43.0 acres seeded with Seed Mix <br />No. 1 - Upland Sites and Ephemeral Drainages and supplemented with additional forb and <br />shrub seed (Table 94.2). There were no permanent revegetation activities in the north <br />mine block. Seeded areas are shown on Exhibit 94.2. Seedbed preparation in the seeded <br />areas was restricted due to replacement of live-handled topsoil. Seeding uas completed <br />with a modified rangeland type drill seeder equipped with two seed boxes (one for small <br />seed end one for Large seed) and depth bands on the disc openers. The seed mixes were <br />split into small and large seed components for placement in the proper seed box. Small <br />seeded species are broadcast from the small seed box, while large seeded species are <br />drilled from the large seed box. AlI permanent seedings were completed in September. <br />No mulching activities were conducted during 1994. All permanently revegetated areas <br />received a cover crop of Regreen, a sterile hybrid Agroovron/Triticum cross. The cover <br />crop seeding rate was 20 PLS pounds per acre. <br />Monitoring. Revegetation monitoring was not conducted at the Seneca II-u mine in 1994. <br />Weed Control. Survey of noxious weeds was carried out on [he mine permit area during the <br />1994 field season. 4eed control activities were conducted only along the mine entrance <br />road, near Pond 006, and near Pond 009. Canada thistle (Cirsium arvense) uas the target <br />species in control areas. The applied herbicide consisted of a tank mix of 2.5 gallons <br />. of 22K Tordon and 0.5 gallons of Banvel with 250 gallons of eater. A spot spray gun uas <br />used to concentrate control activities on target areas. the herbicide mix, based on <br />b <br />