Geohydrology of Test Well USW H-3, Yucca Mountain, Nye County, Nevada
Author | : William Thordarson |
Publisher | : |
Total Pages | : 48 |
Release | : 1985 |
Genre | : Groundwater |
ISBN | : |
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Author | : William Thordarson |
Publisher | : |
Total Pages | : 48 |
Release | : 1985 |
Genre | : Groundwater |
ISBN | : |
Author | : William Thordarson, F. E. Rush, S. J. Waddell |
Publisher | : |
Total Pages | : 48 |
Release | : 1985 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 28 |
Release | : 1984 |
Genre | : Radioactive waste disposal in the ground |
ISBN | : |
Author | : William Thordarson |
Publisher | : |
Total Pages | : 48 |
Release | : 1985 |
Genre | : Groundwater |
ISBN | : |
Author | : David H. Lobmeyer |
Publisher | : |
Total Pages | : 0 |
Release | : 1986 |
Genre | : Hydrogeology |
ISBN | : |
Author | : F. Eugene Rush |
Publisher | : |
Total Pages | : 50 |
Release | : 1983 |
Genre | : Radioactive waste disposal in the ground |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 40 |
Release | : 1991 |
Genre | : |
ISBN | : |
Test well USW H-6 is one of several wells drilled in the Yucca Mountain area near the southwestern part of the Nevada Test Site for investigations related to isolation of high-level nuclear waste. This well was drilled to a depth of 1,220 meters. Rocks penetrated are predominantly ash-flow tuffs of Tertiary age, with the principal exception of dacitic lave penetrated at a depth from 877 to 1,126 meters. The composite static water level was about 526 meters below the land surface; the hydraulic head increased slightly with depth. Most permeability in the saturated zone is in two fractured intervals in Crater Flat Tuff. Based on well-test data using the transitional part of a dual-porosity solution, an interval of about 15 meters in the middle part of the Bullfrog Member of the Crater Flat Tuff has a calculated transmissivity of about 140 meters squared per day, and an interval of about 11 meters in the middle part of the Tram Member of the Crater Flat Tuff has a calculated transmissivity of about 75 meters squared per day. The upper part of the Bullfrog Member has a transmissivity of about 20 meters squared per day. The maximum likely transmissivity of any rocks penetrated by the test well is about 480 meters squared per day, based on a recharge-boundary model. The remainder of the open hole had no detectable production. Matrix hydraulic conductivity ranges from less than 5 x 10−5 to 1 x 10−3 meter per day. Ground water is a sodium bicarbonate type that is typical of water from tuffaceous rock of southern Nevada. The apparent age of the water is about 14,6000 years. 29 refs., 26 figs., 5 tabs.