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Purpose of and Need for the Project
Alternatives Considered but Dismissed
Action Alternative Mitigation Measures
Summary of Environmental Consequences
Chapter III: Affected Environment
Impact Topics Considered in this Assessment
Impact Topics Dismissed from Further Analysis
Geology, Geologic Hazards, and Soils
Hydrology, Floodplains, and Water Quality
Wetlands
Vegetation
Wildlife
Special-Status Species
Air Quality
Noise
Introduction
Overview of Human Occupation
Archeological Resources
Ethnographic Resources
Cultural Landscape Resources, including Historic Sites and Structures
Existing Environmental and Associated Cultural Resource Documentation
Scenic Resources
Recreation
Park Operations and Facilities
Chapter IV: Environmental Consequences
Cumulative Impacts
Context, Duration, Intensity, and Type of Impact
Impairment
Natural Resources
Cultural Resources
Social Resources
Natural Resources
Cultural Resources
Social Resources
Alternative 2: Controlled Demolition
Natural Resources
Cultural Resources
Social Resources
Chapter V: Merced Wild and Scenic River
Merced Wild and Scenic River Comprehensive Management Plan
Consistency with the Merced River Plan
Chapter VI: Consultation and Coordination
Chapter VII: List of Preparers and Reviewers
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Appendices
Appendix A: Cumulative Projects
Appendix B: Regulations and Policies
Appendix C: Section 7 Determination
Appendix D: Special-Status Species Evaluation
List of Figures
Figure I-1: Project Location I-2
Figure II-1: Happy Isles Gauging Station Bridge Demolition Area II-5
Figure II-2: Happy Isles Gauging Station Bridge Isometric: Controlled Demolition II-6
Figure II-3: Happy Isles Gauging Station Bridge Features II-7
Figure II-4: Happy Isles Gauging Station Bridge Area II-10
List of Tables
Table II-1: Summary of Environmental Consequences (II-21)
Table III-1: Special-Status Species Retained in this Analysis (III-26)
Table III-2: Recent Ozone and PM-10 Concentration Data for Yosemite National Park and Vicinity (III-28)
Table IV-1: Typical Noise Levels from Construction Equipment (IV-29)
Table V-1: Effects of the Proposed Action on Outstandingly Remarkable Values in the Yosemite Valley Segment of the Merced Wild and Scenic River Corridor (V-14)
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Main . Table of Contents . Abstract . Executive Summary . Scoping Summary . Fact Sheet . Superintendent's Letter . Environmental Assessment . FONSI
