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• -2_ • The substratum is a loam and sandy loam with high amounts of gravel and C cobble. The available water capacity is moderate and the permeability is also moderate. The surface runoff is medium, with generally a slight erosion hazard. The surface and upper subsoil layers are suitable for use as topsoiling material. The Tridell portion comprises about 35 percent of the soil complex. The remainder of this complex is inclusions of other soil types. Soils other than those mapped and described, may occur within the soil mapping unit boundaries, as inclusions Soil unit 71C has the best suited material for topsoil. The deeper loam and clay loam portions of soil X62 is also suited for topsoil use. Exhibit J - Vegetative Information. Generally, one plant community exists on this proposed gravel pit. The vegetation is primarily a sagebrush-grass plant community. The principle species include big sagebrush, cheatgrass, needle-and-thread, bottlebrush squirreltail, western wheatgrass, letterman needle and Junegrass. The site is presently in a deteriorated condition. The site is used primarily for livestock grazing, with some use as an elk winter range. The site will be used for livestock after reclamation is completed.. Following are seeding recommendations for revegetating and stabilizing the disturbed areas: ... .. C 1) Grass Seeding Mixture - introduced species are recommended to revegetate this site, due to the relative small area of disturbance, natural re-introduction of native species expected, the intended post-reclamation use, and the improved germination and stand establishment qualities. BROADCASTED RATE LBS. SPECIES VARIETY PURE LIVE SEED/ACRE Intermediate Wheat Amur 12 Pubescent LJheat Luna 12 Streambank Wheat Sodar 8 Total 32 lbs. PLSJacre 2) The above rates are for seed which is to be broadcasted and then raked. If any areas will be drilled, the above rate should be reduced by one-half for each specie. 3) Topsoil ti•~hich has been stockpiled, should be spread over all disturbed areas to a depth of 5 to 6 inches. 4} A soil fertility analysis should be obtained to determine the correct arnount and kind of fertilizer to apply. As a minimum 40 pounds available of each, nitrogen and phosphorous, should be applied at the time of seeding. C 5) A mulch should be applied after seeding, to improve plant survival and conserve moisture. An application of 3,000 pounds air dry weight of straw per acre should be applied, or a commercially prepared mulch material used. If straw is used, it should 6e adequately crimped or anchored into the soil.