The purpose for agency action is to preclude surface entry and the location of new mining claims, subject to valid existing rights, within and surrounding the Caliente rail corridor as described in the Yucca Mountain FEIS (DOE 2002). This protective measure is needed to enhance the safe, efficient, and uninterrupted evaluation of land areas for potential rail alignments within the Caliente rail corridor. The evaluation will assist the DOE in determining, through the Rail Alignment environmental impact statement (EIS) process, whether to construct a branch rail line, and to provide support to the BLM in deciding whether or not to reserve a ROW for the rail line under the Federal Land Policy and Management Act (FLPMA). The BLM participated as a cooperating agency in preparing this EA because it is the responsible land manager and BLM staff could contribute resource specific expertise.

The Maintenance Plan for the Performance Assessments and Composite Analyses for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site (Bechtel Nevada, 2000) requires an annual review to assess the adequacy of the performance assessments (PAs) and composite analyses (CAs) for each of the facilities, and reports the results in an annual summary report to the U.S. Department of Energy Headquarters. The Disposal Authorization Statements for the Area 3 and Area 5 Radioactive Waste Management Sites (RWMSs) also require that such reviews be made and that secondary or minor unresolved issues be tracked and addressed as part of the maintenance plan (U.S. Department of Energy [DOE]). The U.S. Department of Energy National Nuclear Security Administration Nevada Site Office performed annual reviews in fiscal year (FY) 2004 by evaluating operational factors and research results that impact the continuing validity of the PA and CA results. This annual summary report presents data and conclusions from the FY 2004 review, and determines the adequacy of the PAs and CAs. Operational factors, such as the waste form and containers, facility design, waste receipts, closure plans, as well as monitoring results and research and development (R&D) activities were reviewed …

A total of 15 water-supply wells are currently being used at the Nevada Test Site (NTS). The purpose of this report is to bring together the information gleaned from investigations of these water-supply wells. This report should serve as a reference on well construction and completion, static water levels, lithologic and hydrologic characteristics of aquifers penetrated, and general water quality of water-supply wells at the NTS. Possible sources for contamination of the water-supply wells are also evaluated. Existing wells and underground nuclear tests conducted near (within 25 meters (m)) or below the water table within 2 kilometers (km) of a water-supply were located and their hydrogeologic relationship to the water-supply well determined.

The purpose of this study is to investigate anisotropy of mechanical properties, namely, compressive strength and modulus, for Tiva Canyon welded tuff from the starter tunnel at Yucca Mountain. Mechanical properties of Tiva Canyon Tuff are needed for the design of the ramps and drifts within the Tiva Canyon horizon. Approximately one cubic foot block samples, all of which were from the thermo -- mechanical unit TCw, were obtained from a muck pile containing excavated rock from the starter tunnel. Specimens were cored from the block samples in two distinct orientations: parallel and perpendicular to the lithophysal cavity orientation. Since lithophysal cavity orientation is predominantly horizontal in the field, parallel specimens can be considered horizontal and perpendicular specimens vertical with respect to the rock mass. The specimens were NX sized (5.4 cm diameter) and had a length-to-diameter ratio of 2:1. The air dried specimens were tested at room temperature in a triaxial chamber at confining pressures of 0.1, 5, and 10 MPa, and at a compressive axial strain rate of 10{sup {minus}5} s{sup {minus}}. The Young`s Modulus values were calculated by a least squares fit of stress - strain data between 10 and 50% of the ultimate strength.

Progress reports are presented for the following tasks: overview and progress of waste package project and container design; waste container design considerations (criticality analysis, experimental drift model); waste container alternate design considerations; thermal simulation of high level nuclear waste canister emplacement; structural analysis and design of nuclear waste package canister; robotic manipulation of the nuclear waste container; investigation of stress in a circular tunnel due to overburden & thermal loading of horizontally placed 21PWR multi-purpose canisters; investigation of faulted tunnel models by combined photoelasticity and finite element analysis; and transport phenomena in the near field.

A complex pattern of active faults occurs in the southern Amargosa Desert, southern Nye, County, Nevada. These faults can be grouped into three main fault systems: (1) a NE-striking zone of faults that forms the southwest extension of the left-lateral Rock Valley fault zone, in the much larger Spotted Range-Mine Mountain structural zone, (2) a N-striking fault zone coinciding with a NNW-trending alignment of springs that is either a northward continuation of a fault along the west side of the Resting Spring Range or a N-striking branch fault of the Pahrump fault system, and (3) a NW-striking fault zone which is parallel to the Pahrump fault system, but is offset approximately 5 km with a left step in southern Ash Meadows. These three fault zones suggest extension is occurring in an E-W direction, which is compatible with the {approximately}N10W structural grain prevalent in the Death Valley extensional region to the west.

In February 1983, the U.S. Department of Energy (DOE) identified the Yucca Mountain site in Nevada as one of nine potentially acceptable sites for a mined geologic repository for spent nuclear fuel and high-level radioactive waste. The site is in the Great Basin, which is one of five distinct geohydrologic settings considered for the first repository. To determine their suitability, the Yucca Mountain site and the eight other potentially acceptable sites have been evaluated in accordance with the DOE's General Guidelines for the Recommendation of Sites for the Nuclear Waste Repositories. These evaluations were reported in draft environmental assessments (EAs), which were issued for public review and comment. After considering the comments received on the draft EAs, the DOE prepared the final EAs. On the basis of the evaluations reported in this EA, the DOE has found that the Yucca Mountain site is not disqualified under the guidelines. The DOE has also found that it is suitable for site characterization because the evidence does not support a conclusion that the site will not be able to meet each of the qualifying conditions specified in the guidelines. On the basis of these findings, the DOE is nominating the Yucca Mountain site …

This GEOTHERM sample file contains 1367 records for Nevada. The records contain data on location, sample description, analysis type, collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioactive isotope data are occassionally available. (ACR)

All chemical data for geothermal fluids in Nevada available as of December 1981 are maintained on GEOTHERM, a computerized information system. This report presents summaries and sources of records for Nevada. 7 refs. (ACR)

Recorded data taken from field samples of filtered spring, stream, and well water, and acidified stream and lake water from the Goldfield quadrangle in California and Nevada.

Recorded laboratory analysis for samples of filtered spring, stream, and well water, and acidified stream and lake water from the Goldfield quadrangle in California and Nevada. -- check report

"Field and laboratory data are presented for 790 sediment samples from the Goldfield Quadrangle, California; Nevada. The samples were collected by savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource evaluation Project at Oak Ridge, Tennessee." (from Abstract)

"Field and laboratory data are presented for 1795 sediment samples from the Lund Quadrangle, Nevada; Utah. The samples were collected by the Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at oak ridge, Tennessee." (from Abstract)

Recorded data taken from field samples of filtered spring, stream, and well water, and acidified stream and lake water from the Lund quadrangle in Nevada and Utah.

Recorded laboratory analysis for samples of filtered spring, stream, and well water, and acidified stream and lake water from the Lund quadrangle in Nevada and Utah.

This report talks about Baltazor 1500-1 and McGee 1500-2, Humboldt County, Nevada, Temperature Depth Data

Observed apparent resistivity data in ohm-meters, standard error data in ohm-meters, and number of observations are tabulated. (JGB)

The data presented are referenced to a gravity base station in Denio, Nevada at the Post Office, 50 meters south of the Oregon-Nevada State line, 1.6 meters south of the door in the southeast corner of the concrete porch, near the mailbox. Site is monumented with a ''USAF Gravity Station'' disc (A.C.I.C. reference number 2352-1). Base value is 979945.94.

None

This report follows the hydrogeochemical and stream-sediment study in the Cave Valley Basin, Nevada, conducted by the Lawrence Livermore Laboratory. This report contains only the analytical data and sample locations.

This report follows a hydrogeochemical and stream-sediment study taken in the Roach Lake Basin by the Lawrence Livermore Laboratory. This report contains only the analytical data and sample locations.

This report follows the hydrogeochemical and stream-sediment study in the Winnemucca Dry Lake Basin in Nevada that was conducted by the Lawrence Livermore Laboratory. This report contains only the analytical data and sample locations.

This report follows the hydrogeochemical and stream-sediment study in the Smoke Creek Desert Basin in Nevada that was conducted by the Lawrence Livermore Laboratory. This report contains only the analytical data and sample locations.

From introduction: The objective of this survey is to develop a geochemical data base for use by the private sector to locate regions of anomalous uranium content. Prior to wide area coverage, several pilot studies are being undertaken to develop and evaluate sampling and analytical techniques. The first of these studies was conducted in the Walker River Basin.