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1.4 million tpy commercial production facility; White River Nahcolite is operating an <br /> 80,000 to 90,000 tpy nahcolite production facility approximately 3% miles east- <br /> southeast of the project site. <br /> Federal Oil shale tract C-a is approximately 4'/2 miles west of the project site. <br /> Activities at this oil shale tract resulted in Rio Blanco County (RBC) Road - 24 being <br /> paved. <br /> D-1.2 TOPOGRAPHY <br /> Topographically the Lease area is marked by shallow valleys separated by broad, relatively <br /> flat ridges (FigureC-3). The highest elevation (6,580 feet) occurs in the northwest corner of <br /> the Lease. The total relief for the Lease is approximately 290 feet. <br /> Three streams are located near the Lease: Corral Gulch and Stake Springs Draw merge <br /> south of the Lease to form Yellow Creek. Yellow Creek is a perennial stream, but over the <br /> length of its channel, the stream has an intermittent flow. Yellow Creek flows northeast, <br /> near the border of the east side of the Lease (Figure C-3). Tributaries to these streams are <br /> intermittent and flow only during spring snowmelt, and during heavy summer and fall <br /> rainstorms. Many dry gullies on the Lease drain into Corral Gulch or Yellow Creek. <br /> D-1.3 EXISTING ROADS AND STRUCTURES <br /> Within the lease area there are the following known existing roads and structures: <br /> • roads - the lease area has numerous unmaintained one lane dirt roads some of <br /> which provide access to well locations; the BLM regulations require that vehicles stay <br /> on existing roads and trails except for specific purposes from October 1 through April <br /> 30; <br /> • waterlines — the BLM has a buried water tank and plastic waterlines which provide <br /> water to livestock water tanks; <br /> • core hole — in the northeastern part of the lease area is core hole RS-96-20-1; this <br /> core hole was drilled in 1996 to an approximate depth of 2,600 feet to help better <br /> determine the lease area geology, sodium resources, hydrology and rock structure <br /> (Hardy and Goodrich, June 1996); this core hole has been stabilized pending <br /> conversion to a monitoring well. <br /> • airstrip — a small part of an inactive airstrip formerly used by Amoco; the strip has <br /> been fully reclaimed and revegetated. <br /> G:\LMW 78545.002\Reciamation\ReGamexh.DOC D-3 <br />