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• INVENTORY & EVALUATION EXHIBIT B (A) <br /> Requested By: Rio Blanco County Road Date: November 3 , 1998 <br /> and Bridge Department <br /> by Joy Surveying Company <br /> Assisted By: Alvin L. Jones Location: SW1/4NW1/4 & <br /> Resource Conservationist NE1/4SW1/4 , <br /> USDA-NRCS Sec 19, T2S,R102W <br /> SITUATION: You requested an inventory of existing soil and <br /> vegetation, and reclamation recommendations for a prposed gravel <br /> pit located on BLM property in the East Red Wash drainage south <br /> west of Rangely. <br /> INFORMATION PROVIDED: The following information is provided, <br /> based upon an on site inventory and evaluation on Ocotber 30 , <br /> 1998 . <br /> 1) SOILS - One soil has been mapped on this location, where the <br /> disturbance will occur. Soil Mapping Unit #53 - Moyerson stony <br /> clay loam, 15 to 65 percent slopes . Typically this soil has a <br /> surface with 5 to 20 percent covered by stones, flagstones, and <br /> boulders . The surface layer normally is a stony clay loam 2 <br /> inches thick. The next layer is a clay loam 8 inches thick. The <br /> underlying material is a clay about 7 inches thick. Fractured <br /> shale is at a depth of 17 inches . The depth to shale ranges 10 <br /> to 20 inches . The soil is calcareous throughout . This site <br /> appears to have inclusions of Blazon channery loam and Rentsac <br /> channery loam. <br /> Permeability of this soil is slow with a low water holding <br /> capacity. Potential runoff is rapid and the hazard of water <br /> erosion is very high. <br /> The topsoil found on this site is very limited and primarily <br /> occurs on the north and east slopes . Suitable topsoil present on <br /> the site should be saved and stockpiled, for use during <br /> reclamation. <br /> While the pit is being excavated, provisions should be taken <br /> to limit deposition of overburden and gravel on slopes below the <br /> pit area and above the county road. <br /> 2) VEGETATION - Existing vegetation on the proposed site is <br /> within the Clayey Slopes Range Site, and at the time of the <br /> inventory was still presently in a relatively native condition. <br /> Dominate species found on the site were Salina wildrye, Indian <br /> ricegrass, Sandberg bluegrass, bluebunch wheatgrass, western <br /> wheatgrass, bottlebrush squirreltail , cheatgrass , shadescale, big <br /> sagebrush, and greasewood. Other species found on the site <br /> include rabbitbrush, snakeweed, winterfat, juniper, and pinion. <br /> Vegetative cover is approximately 10 to 15 percent, with an <br /> annual production of about 400 pounds/acre air dry weight . <br />