Geohydrologic and drill-hole data for test well USW H-1, adjacent to Nevada Test Site, Nye County, Nevada

Rush, F.E.; Thordarson, William; Bruckheimer, Laura

doi:10.3133/ofr83141

Cited by 24 publications

(19 citation statements)

References 1 publication

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“…Note that two separate flow surveys were conducted in well H-1 and that the percentage of flow shown from individual flowing intervals is the percentage from the upper or lower survey only. The permeability is much higher for the portion of well H-1 corresponding to the upper survey than for the portion of the lower survey, as indicated by the relative magnitudes of drawdown in pumping tests (Rush et al 1983 …”

Section: General Approachmentioning

confidence: 99%

Probability Distribution for Flowing Interval Spacing

Kuzio¹

2004

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Section: General Approachmentioning

confidence: 99%

Probability Distribution for Flowing Interval Spacing

Kuzio¹

2004

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“…In the second model, the effective porosity was assumed to be uniform in each of the zones {1, 2, 3, 4) of transmissivity. The estimate of mean and standard deviation in each zone was based on reports by Bentley {1984), Lobmeyer et al {1983) and Rush et al {1983). The measurements of Peters et al {1984) for small cores indicate a positive correlation between porosity and hydraulic conductivity for welded and nonwelded-nonzeolitized tuffs {Fig.…”

Section: Statistical Properties Of Effective Porositymentioning

confidence: 98%

“…The moisture content of the materials generally increases with depth in the unsaturated zone but can vary both within and between stratifications. Typical saturation, which is the ratio of moisture content to porosity of the tuff matrix, ranges from 34 to 96 percent, and the matrix porosity varies between 10 and 44 percent (Rush et al 1983). The tuffs typically demonstrate low saturated matrix hydraulic conductivities ranging in order of magnitude from 10-10 cm/s to 10-3 cm/s (Peters et al 1984).…”

Section: Conceptual Hydrologic Model Of Yucca Mountainmentioning

confidence: 99%

Investigations of Sensitivity and Uncertainty in Some Hyorologic Models of Yucca Mountain and Vicinity

Jacobson¹,

Freshley²,

Dove³

1985

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Distribution Category UC-70The uncertainty in travel tiMe for water through the unsaturated and saturated zones of Yucca Mountain and vicinity was determined by considering uncertainty associated with input raraMeters to the hydrologic MOdels of these zones. A first-order analysis was used to investigate uncertainty in water travel time throu~h the unsaturated zone at Yucca Mountain, based on an analytic solution for water flow. Results of the investigation of uncertainty for the unsaturated zone indicated that uncertainty in the percolation estimate contributed significantly more to uncertainty in travel time than uncertainty in estimates of hydraulic conductivity. Monte Carlo and first-order approaches ~ere used to investigate uncertainty in ground-water travel tiMe for different cases that varied in the treatment of the input oarameters to the hydrologic model of the unsaturated zone. Comparison of the Monte Carlo and first-order estimates of mean ground-water travel time and travel time uncertainty in the saturated zone demonstrates that the first-order aporoach underestimated both the mean and variance of travel time for all cases considered. This underestiMation suggests that the Monte Carlo approach should be used to estiMate mean travel time and its variance as well as the probability density distribution of travel time. A sensitivity study of ground-water travel time in the saturated zone indicated that the zones with smaller transmissivity produced the larqest influence in travel time for most cases. INTRODUCTIONPacific Northwest Laboratory (PNL) has been supporting Sandia National Laboratories during performance assessment activities for the Nevada Nuclear Waste Storage Investigations (NNWSI) project. Performance assessment contributions from PNL have included computer simulations of water flow and radionuclide transport at Yucca Mountain, which is located on and adjacent to the southwest corner of the Nevada Test Site. These simulations were designed to help supply technical insight into programmatic issues such as repository horizon selection, ground-water percolation, ground-water travel times, radionuclide migration projections, biosphere discharge points, repository stability, and suggested data-gathering programs.One guideline prescribed by the Department of Energy (DOE) for repository siting is the 1000-year minimum ground-water travel time determined for the site prior to waste emplacement (DOE 1984). The time is to be evaluated for any potential path of likely radionuclide travel from the disturbed zone to the accessible environment. The accessible environment may be defined as 10 kilometers (10,000 meters) from the repository boundaries or possibly the nearest potable water supply. The DOE guidelines disqualify a site if the expected ground-water travel time along any path of likely and significant radionuclide travel from the disturbed zone to the accessible environment is less than 1000 years. Determination of uncertainty in travel time will be necessary to establish the credibility of ...

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“…H-1 Table 6 in USGS OFR-83-141 (Rush et al 1983) was used to determine dip angles directly. Only three data points were available for dip angle.…”

Section: Anl-nbs-md-000003 Rev 00 Icn02mentioning

confidence: 99%

Probability Distribution for Flowing Interval Spacing

Kuzio¹

2001

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Description of the changes for ICN 01 includes listing qualified source data DTNs in Section 4., revised Criteria in Section 4.2, made editorial correction in Section 5., updated Section 6.0 -6.4 as needed, updated the table of contents, updated the list of Figures, updated the references to include the new DTNs in Section 8, made editorial corrections to figure captions. Note: that none of input values changed, therefore none of the figures, tables, or results changed. While minor in nature, these changes were extensive enough that Section 5.9d)2 of AP-3.1 OQ was followed. Therefore, vertical lines were not used in the margins to indicate changes.Update the Data in Table -1, Section 4, and References, Section 8, to include Q DTN.

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Geohydrologic and drill-hole data for test well USW H-1, adjacent to Nevada Test Site, Nye County, Nevada

Cited by 24 publications

References 1 publication

Probability Distribution for Flowing Interval Spacing

Probability Distribution for Flowing Interval Spacing

Investigations of Sensitivity and Uncertainty in Some Hyorologic Models of Yucca Mountain and Vicinity

Probability Distribution for Flowing Interval Spacing

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