Flood damage

Table of Contents

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Abstract

 

 

Executive Summary

 

 

Superintendent's Letter

 

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Assessment

 

    Chapter I: Purpose and Need

 

    Background

    Purpose of and Need for the Project

    Planning Context

    Management Goals

    Issues and Concerns

 

 

    Chapter II: Alternatives

 

    Introduction

    Overview of the Alternatives

    Alternatives Considered but Dismissed

    Action Alternative Mitigation Measures

    Summary of Environmental Consequences

 

 

    Chapter III: Affected Environment

 

    Introduction

          Impact Topics Considered in this Assessment

          Impact Topics Dismissed from Further Analysis

    Regional Setting

    Natural Resources

          Geology, Geologic Hazards, and Soils

          Hydrology, Floodplains, and Water Quality

          Wetlands

          Vegetation

          Wildlife

          Special-Status Species

          Air Quality

          Noise

    Cultural Resources

          Introduction

          Overview of Human Occupation

          Archeological Resources

          Ethnographic Resources

          Cultural Landscape Resources, including Historic Sites and Structures

          Existing Environmental and Associated Cultural Resource Documentation

    Social Resources

          Scenic Resources

          Recreation

          Park Operations and Facilities

 

 

    Chapter IV: Environmental Consequences

 

    Introduction

          Cumulative Impacts

          Context, Duration, Intensity, and Type of Impact

          Impairment

    Methodologies

          Natural Resources

          Cultural Resources

          Social Resources

    Alternative 1: No Action

          Natural Resources

          Cultural Resources

          Social Resources

    Alternative 2: Controlled Demolition

          Natural Resources

          Cultural Resources

          Social Resources

 

 

    Chapter V: Merced Wild and Scenic River

 

    Introduction

    Wild and Scenic Rivers Act

    Merced Wild and Scenic River Comprehensive Management Plan

    Methodology

    Consistency with the Merced River Plan

 

 

    Chapter VI: Consultation and Coordination

 

    Compliance History

    Scoping History

    On-Site Public Meeting

    Results of Scoping

    Public Comment Period

    Coordination

    Future Information

 

 

    Chapter VII: List of Preparers and Reviewers

 

 

    Chapter VIII: Glossary

 

    Glossary of Terms

    Acronyms

 

 

    Chapter IX: Bibliography

 

    References

    Map Data

 

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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