No. NC-EWDP-1DX SITE SUMMARY
116° 35' 18.003"
Township 14S Range 48E
Section 29 NW 1/4 NE 1/4 1/4
803.18 meters AMSL (2635.10 feet) GPS
Highway 95 west from Lathrop Well
Junction 11.0 miles to gate on north side of Highway. Take gravel
road 0.2 miles to the turn-around on the white spring deposits.
The purpose of the NC-EWDP-1DX drillhole
was to 1) provide lithologic samples of spring deposits; 2) define
valley-fill stratigraphic sequence and groundwater flow paths
down-gradient of proposed repository; 3) provide aquifer test data; and 4)
provide water level and water chemistry data.
NC-EWDP-1DX is located on paleospring
deposits near the boundary between the Crater Flat and Amargosa Desert
hydrographic basins. The site is located down-gradient of fractured
volcanic rocks that provide a pathway for groundwater flow from the Yucca
Mountain area. The paleospring deposits are of note as these types of
deposits are associated with past climates. Two zones, one in the upper
Tertiary volcanics, and one in the underlying Tertiary sedimentary rocks
were selected for long-term monitoring. A satellite well (NC-EWDP-1S) was
completed in shallower horizons. Water samples were collected for