1. REGIONAL AND SITE GEOLOGY
    1.1 REGIONAL AND SITE GEOMORPHOLOGY
         1.1.1 Regional Geomorphology and Topography
         1.1.2 Geomorphology and Topography of the Yucca Mountain Area
         1.1.3 Geomorphic Processes and Erosion at the Site
    1.2 REGIONAL AND SITE STRATIGRAPHY
         1.2.1 Regional Stratigraphy and Lithology
            1.2.1.1 Precambrian Rocks
            1.2.1.2 Paleozoic Rocks
            1.2.1.3 Mesozoic Rocks
            1.2.1.4 Tertiary Sedimentary Rocks
            1.2.1.5 Tertiary and Quaternary Igneous Rocks
            1.2.1.6 Tertiary and Quaternary Surficial Deposits
         1.2.2 Site Stratigraphy and Lithology
            1.2.2.1 Pre-Cenozoic Rocks
            1.2.2.2 Mid-Tertiary Siliceous Volcanic Rocks
            1.2.2.3 Mid-Tertiary Basalt
            1.2.2.4 Late Tertiary to Quaternary Surficial Deposits
    1.3 STRUCTURAL GEOLOGY AND TECTONICS
         1.3.1 Regional Structural Geology and Tectonics
         1.3.2 Site Structural Geology and Tectonics
            1.3.2.1 Faulting at Yucca Mountain
            1.3.2.2 Quaternary Faulting History
            1.3.2.3 Folding at Yucca Mountain
            1.3.2.4 Fractures at Yucca Mountain
         1.3.3 Volcanism at Yucca Mountain
            1.3.3.1 Silicic Volcanism
            1.3.3.2 Basaltic Volcanism
            1.3.3.3 Alternate Conceptual Models for Volcanic Activity
            1.3.3.4 Volcanic Hazards Assessments
    1.4 SEISMICITY AND SEISMIC HAZARDS
         1.4.1 Seismicity
            1.4.1.1 Regional Seismicity
            1.4.1.2 Historic Seismicity near Yucca Mountain
            1.4.1.3 Prehistoric Earthquakes at Yucca Mountain
         1.4.2 Relevant Earthquake Sources
        1.4.3 Probabilistic Seismic Hazard Assessment

2. HYDROLOGY
    2.1 SURFACE WATER HYDROLOGY
         2.1.1 Flood Potential
         2.1.2 Surface Water Quality
     2.2 GROUNDWATER HYDROLOGY
        2.2.1 Unsaturated Zone Hydrology
            2.2.1.1 Occurrence of Unsaturated Zone Groundwater
            2.2.1.2 Infiltration and Percolation
            2.2.1.3 Water Movement
            2.2.1.4 Pneumatic Pressure Effects
            2.2.1.5 Lateral Flow and Effect of Faults
            2.2.1.6 Perched Water
            2.2.1.7 Isotopic Dating of Water and Air Flow
            2.2.1.8 Temperature and Heat Flow
        2.2.2 Saturated Zone Hydrology
            2.2.2.1 Groundwater Flow
            2.2.2.2 Potentiometric Surface
            2.2.2.3 Aquifer Characteristics
            2.2.2.4 Recharge to the Volcanic System
            2.2.2.5 Discharge from the Volcanic Flow System
            2.2.2.6 Groundwater Chemistry
            2.2.2.7 Dating of Recharge to the Saturated Zone
    2.3 PALEOCLIMATE AND PALEOHYDROLOGY
        2.3.1 Present Climate
        2.3.2 Paleohydrology
        2.3.4 Future Climate at Yucca Mountain

3. NATURAL RESOURCES
    3.1 METALLIC MINERAL AND MINED ENERGY RESOURCES
        3.1.1 Identified Metallic Resources in the Yucca Mountain Conceptual Controlled Area
            3.1.1.1 Comparison of the Geology of the Yucca Mountain Conceptual Controlled Area with Mineralized Areas in the Region
        3.1.2 Mined Energy Resources (Uranium)
        3.1.3 Conclusions
     3.2 INDUSTRIAL ROCKS AND MINERALS RESOURCES
        3.2.1 Industrial Minerals in the Great Basin
        3.2.2 Industrial Rocks and Minerals at Yucca Mountain
            3.2.2.1 Barite
            3.2.2.2 Building Stone
            3.2.2.3 Clay
            3.2.2.4 Construction Aggregate
            3.2.2.5 Fluorite
            3.2.2.6 Limestone
            3.2.2.7 Pumice
            3.2.2.8 Silica
            3.2.2.9 Vitrophyre/Perlite
            3.2.2.10 Zeolites
    3.3 HYDROCARBON RESOURCES
        3.3.1 Oil and Gas
        3.3.2 Tar Sands
        3.3.3 Oil Shale
        3.3.4 Coal
    3.4 GEOTHERMAL RESOURCES
        3.4.1 Absence of a Heat Source
        3.4.2 Hydrology and Heat Flow
        3.4.3 Indirect Indications of Potential Geothermal Systems
        3.4.4 Conclusions

4. GEOENGINEERING
    4.1 INTRODUCTION
    4.2 STRATIGRAPHIC FRAMEWORK FOR TESTING
    4.3 ROCK STRUCTURE PROPERTIES FROM FIELD STUDIES
    4.4 LABORATORY PROPERTIES OF INTACT ROCK
        4.4.1 Physical Properties
            4.4.1.1 Density and Porosity
            4.4.1.2 Mineralogy
        4.4.2 Thermal Properties
            4.4.2.1 Thermal Conductivity
            4.4.2.2 Thermal Expansion
            4.4.2.3 Heat Capacity
        4.4.3 Mechanical Properties
            4.4.3.1 Static and Dynamic Elastic Constants
            4.4.3.2 Compressive Strength
            4.4.3.3 Tensile Strength
            4.4.3.4 Time-Dependent (Creep) Behavior
            4.4.3.5 Hardness
    4.5 ROCK MASS PROPERTIES
        4.5.1 Rock Mass Classification
        4.5.2 Thermal Properties
        4.5.3 Mechanical Properties
            4.5.3.1 Rock Mass Strength
            4.5.3.2 Rock Mass Elastic Moduli
    4.6 IN SITU STRESS CONDITIONS
    4.7 EXCAVATION CHARACTERISTICS OF THE ROCK MASS
    4.8 ENGINEERING PROPERTIES OF SURFICIAL MATERIALS
        4.8.1 Surficial Sedimentary Deposits
        4.8.2 Soil Investigations

5. REFERENCES
    5.1 REFERENCES CITED
    5.2 CODES, STANDARDS, AND REGULATIONS
    5.3 PROCEDURES

FIGURES

1-1. Generalized Physiographic Subdivisions and Location of the Walker Lane Belt in the Region Surrounding the Yucca Mountain Area
1-2. Local Physiographic Subdivisions of the Yucca Mountain Area
1-3. Simplified Topographic Map of the Site Area
1-4a. Precambrian and Paleozoic Stratigraphic Units of the Yucca Mountain Region
1-4b. Late Paleozoic and Mesozoic Stratigraphic Units of the Yucca Mountain Region
1-4c. Tertiary and Quaternary Stratigraphic Units of the Yucca Mountain Region
1-5. Plan Map Showing the Exploratory Studies Facility and YMP Boreholes
1-6. Simplified Geologic Map Showing Distribution of Major Lithostratigraphic Units
1-7. Interpretive Structure Contour Map of the Tertiary-Paleozoic Unconformity
1-8. Principal Stratigraphic Units at Yucca Mountain
1-9. Simplified Geologic Map of Yucca Mountain
1-10. Simplified East-West Geologic Cross-Section Across Yucca Mountain
1-11. Structural Geologic Setting of Yucca Mountain
1-12. Tectonic History of the Great Basin Region
1-13. Schematic Illustration of Some of the Mechanisms and Geometric Configurations Proposed for Extensional Faulting in the Basin and Range
1-14. Calderas of the Southwest Nevada Volcanic Field Near Yucca Mountain
1-15. Mapped Faults At and Near the Yucca Mountain Site
1-16. Known and Suspected Quaternary Faults and Significant Local Faults Within 100 km of Yucca Mountain
1-17. Distribution of Late Cenozoic Basaltic Rocks in the Western United States
1-18. Location of Vents of OPB Basalts (Circles) and YPB (post-Miocene) Basalt (Triangles)
1-19. Quaternary and Pliocene Basalt Centers of the Yucca Mountain Region
1-20. Historical Earthquake Epicenters within 300 km of Yucca Mountain
1-21. Historical Seismicity within 100 km of Yucca Mountain
1-22. Focal Depth Distribution of Earthquakes (1863-1993) within 200 km of Yucca Mountain
1-23. Focal Mechanisms for Earthquakes of M_L > 3.5 in the Vicinity of Yucca Mountain from 1987 to 1997
1-24. Epicenters and Focal Mechanisms of Earthquakes and Known and Suspected Quaternary Faults Near Yucca Mountain

2-1. Death Valley Regional Groundwater Flow System Showing Hydrographic Areas (after D�Agnese et al. 1997, Figure 9)
2-2. Flood map after Squires and Young 1984, Plate 1; and Blanton 1992, Figures 2, 11, 16, 21, and 262-5
2-3. Hydrogeologic and Stratigraphic Units
2-4. Schematic Conceptual Diagram of Water Flow at Yucca Mountain
2-5. Death Valley Regional Groundwater Flow System Showing Three Designated Subregions, Groundwater Basins, and Associated Flow Paths (Modified after D�Agnese et al. 1997, Figures 29 and 30)
2-6. Piezometric Surface (Tucci and Burkhardt 1995) Based on 1993 Data

3-1. Locations of the Yucca Mountain Conceptual Control Area, Metal Mining Districts, and Metal Mines in the Yucca Mountain Region
3-2. Industrial Mineral Occurrences in the Vicinity of Yucca Mountain

4-1. Proposed Repository Site Investigation Area
4-2. Comparison of Several Stratigraphic Subdivisions of Mid-Tertiary Volcanic Rocks at Yucca Mountain
4-3. Stratigraphic Cross Section Along the Exploratory Studies Facility North Ramp
4-4. Stratigraphic Cross Section Along the Exploratory Studies Facility Main Drift
4-5. Stratigraphic Cross Section Along the Exploratory Studies Facility South Ramp

TABLES

1-1. Ranges in Age Dates for Tertiary-Quaternary Surficial Deposits at Yucca Mountain
1-2. Summary of Characteristics of Selected Faults at Yucca Mountain
1-3. Mean Ground Motion Hazard at 10^-3 and 10^-4 Annual Exceedance
1-4. Mean Displacement Hazard at Nine Demonstration Sites

2-1. Estimated Transmissivity Values Obtained from Single-Borehole Aquifer Tests in the Vicinity of Yucca Mountain
2-2. Hydrologic Characteristics of Saturated Zone Hydrogeologic Units at Yucca Mountain

4-1. Rock Weathering Descriptions
4-2. Estimated Rock Hardness Descriptions
4-3. Summary of In Situ Stresses at the Repository Horizon