Well No.   NC-EWDP-1DX SITE SUMMARY

Status: Completed

Latitude/Longitude (Datum NAD-83):  
36° 42' 33.526" North
116° 35' 18.003" West

Legal Description:   
Township 14S Range 48E    
Section 29 NW 1/4  NE 1/4 1/4

Elevation (Datum NGVD-29):
803.18 meters AMSL (2635.10 feet) GPS

Access:  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.

Purpose:  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 chemical analysis.