2004-06-30_PERMIT FILE - M2004048

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Robert Daugherty Application for a Mined Land Reclamation Permit Cedar Point Picture Rock Quarry 6.3.2 EXHIBIT B -Site Description The native vegetation on the site is mainly piCron pine and Utah juniper. Some have been killed by beetles. The elevation is 7,400 to 7,600 feet. The average annual precipitation is 13 to 15 inches, the average annual air temperature is 43 to 45 degrees Fahrenheit, and the average frost-free period is 90 to 100 days. The rock that will be extracted is a sandstone from the Lower Cretaceous Burro Canyon Formation (Cedar Mountain equivalent). At this location, the Burro Canyon Formation is 190 to 240 feet thick. It is awhite-grey-red colored sandstone and conglomerate. It is a massive, irregular to lenticulaz sandstone that forms ledges up to 100 feet thick. The depositional environment of the Burro Canyon is a poorly sorted fluvial deposit. This formation overlies the Morrison Formation, which has numerous uranium mines and prospects in its Salt Wash Member. The limited impact mining operations aze situated on the soil complex identified by the Soil Conservation Service as 60 percent Skein loam and 30 percent Rock outcrop. The components of this unit are so intricately intermingled that it was not practical to map them separately. The remainder of the unit consists of five percent Gurley soils, which occur under grasses and shrubs, and five percent soils that are similar to the Skein soil, but which lack a dark surface. The Skein soil is shallow and well-drained. It formed in residuum derived dominantly from interbedded sandstone and shale. Typically, the surface layer is reddish-brown loam. The upper seven inches of the underlying materials is white-gray, very gravelly loam. Hard sandstone is at a depth of 19 inches. In some areas, the surface layer is gravelly loam, cobbly loam, gravelly fine sandy loam, or fine sandy loam. Permeability of the Skein soil is moderate. Available water capacity is very low. Effective rooting depth is 10 to 20 inches. Runoff is very rapid, and the hazard of water erosion is very high. Soil pH ranges from 7.4 to 8.4, slightly to moderately alkaline. Rock outcrop consists of exposed bedrock. Areas are gently sloping to very steep. They occur as 10- to 50-foot escarpments and as scattered outcrops one to 12 inches above ground level. The rock outcrop has very slow permeability. Runoff is very high, with no flood frequency. This unit is used for limited livestock grazing and wildlife habitat. The potential plant community is mainly pii5on pine and Utah juniper and an understory of Indian ricegrass, gallets, and Salina wildrye. This unit is poorly suited to recreational development. It is limited mainly by depth to bedrock and by slopes greater than 15 percent. This map unit is capability subclass VIIe, non-irrigated. It is in the Pinyon- Juniper woodland site. There are no man-made structures within 200 feet of the site. There are also no water resources in the proposed quarry site, including springs, streams, rivers, lakes, stock- watering ponds or ditches. The groundwater at this site is associated with the Dakota- Glen Canyon aquifer system. The quality of the groundwater is poor, making it unsuitable for development. Depth to the top of groundwater is 2,000 feet below ground level. Daub & Associates, Inc. 2