NC-EWDP-1S SITE SUMMARY
36° 42' 33.385" North
116° 35' 17.880"
Township 14S Range 48E
Section 29 NW 1/4 NE 1/4 1/4
803.12 meters AMSL (2635.4 feet) GPS
Access: Take Highway 95 west from the Lathrop
Well Junction 11.0 miles to the gate on the north side of the Highway. Take the
gravel road 0.2 miles to the turn-around on the white spring deposits.
Purpose: 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
NC-EWDP-1S 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. Deeper zones are monitored in NC-EWDP-1D.
Prior to completion, a 48 hour constant discharge test was completed. Water samples
were collected for analysis.