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The location of the BLM inactive waterlines, core hole RS-96-20-1 and the reclaimed airstrip <br /> are shown on Figure C-3. Other nearby structures are also shown on this figure and include <br /> the following: <br /> • buried communication cable; <br /> • inactive USGS surface water gauging stations, 09306244, 09306246 and 09306230 <br /> along Corral Gulch and Yellow Creek; <br /> • alluvial wells S24, 84 Mesa Well (and old ranch site) and DOW 83-8Y; and <br /> • other wells GS-M3, TH75-7A, TH75-713 and Dunn (WRC) 20-1. <br /> The status of the wells are as follows: <br /> • 84 Mesa Well: pump set in well; depth to water approximately 15 feet. <br /> • GS-M3: hole completed to approximately 1,650 feet to monitor upper and lower <br /> aquifers (A-Groove and B-Groove); the well has been cemented-in. <br /> • Dunn (WRC) 20-1: hole originally completed to approximately 2,413 feet; hole filled <br /> with viscous mud. <br /> • TH75-7A: total depth of hole 1,080 feet; upper aquifer(A-Groove) monitor well; <br /> water level approximately 128 feet. <br /> • TH75-7B: total depth of hole 1,498 feet; lower aquifer (B-Groove) monitor well; <br /> water level at approximately 152 feet. <br /> • RS-96-20-1: total depth of hole 2,605 feet; geotechnical corehole; future monitoring <br /> well. <br /> Additional information was not available on the shallow alluvial wells S24 and DOW 83-84. <br /> D-1.4 GEOGRAPHICAL AND PHYSICAL FEATURES, AND HAZARDS <br /> The Uinta Formation is the dominant surface geological unit cropping out within, and in <br /> proximity of the Lease. In the vicinity of the Lease, four tongues of the Uinta Formation and <br /> four interstratified tongues of the Green River Formation have been mapped along with the <br /> surface alluvium (Duncan, 1976a and b). Duncan's Tu5 unit underlays the majority of the <br /> Lease. The unit is dominated by buff-weathering silty marlstone and brown-weathering, <br /> ledgeforming sandstone. Small outcrops of channel-form, cross-stratified, medium to fine <br /> grained sandstone can be found in some of the shallow valleys on the Lease. Silts, sands, <br /> G:\LMM78545.002\Reclamation\Reclamexh.DOC D-4 <br />