U.S. Highway 101 / State Route 46 West Interchange

December 2009

General information (PDF) about this document.

Table of Contents

• Finding of No Significant Impact (PDF) - iii
• Mitigated Negative Declaration (PDF) - v
• Summary (PDF) - vii
• Table of Contents (PDF) - xiii
• List of Figures (PDF) - xv
• List of Tables (PDF) - xv

Proposed Project

Chapter 1 (PDF)

• 1.1 Introduction - 1
• 1.2 Purpose and Need -7
• 1.2.1 Purpose - 7
• 1.2.2 Need - 9
• 1.3 Alternatives - 11
• 1.3.1 Build Alternatives - 11
• 1.3.2 No-Build (No-Action) Alternative - 14
• 1.3.3 Comparison of Alternatives - 14
• 1.3.4 Identification of a Preferred Alternative - 23
• 1.3.5 Alternatives Considered and Withdrawn - 25
• 1.4 Permits and Approvals Needed - 27

Affected Environment, Environmental Consequences & Avoidance, Minimization & / or Mitigation Measures

Chapter 2 (PDF)

• 2.1 Human Environment - 30
• 2.1.1 Land Use - 30
• 2.1.2 Growth - 40
• 2.1.3 Farmlands - 42
• 2.1.4 Community Impacts - 45
• 2.1.5 Utilities/Emergency Services - 59
• 2.1.6 Traffic and Transportation/Pedestrian and Bicycle Facilities - 61
• 2.1.7 Visual/Aesthetics - 69
• 2.2 Physical Environment - 81
• 2.2.1 Hydrology and Floodplains - 81
• 2.2.2 Water Quality and Storm Water Runoff - 85
• 2.2.3 Geology/Soils/Seismic/Topography - 90
• 2.2.4 Paleontology - 93
• 2.2.5 Hazardous Waste Materials - 95
• 2.2.6 Air Quality - 102
• 2.2.7 Noise - 116
• 2.3 Biological Environment - 129
• 2.3.1 Natural Communities - 129
• 2.3.2 Wetlands and Other Waters - 143
• 2.3.3 Animal Species - 147
• 2.3.4 Invasive Species - 151
• 2.4 Cumulative Impacts - 153
• 2.5 Climate Change under the California Environmental Quality Act - 156

Comments & Coordination

Chapter 3 (PDF) - 173

List of Preparers 

Chapter 4 (PDF) - 177

Distribution List

Chapter 5 (PDF) - 181

• Appendix A (PDF) - California Environmental Quality Act Checklist
• Appendix B (PDF) - Title VI Policy Statement
• Appendix C (PDF) - Summary of Relocation Benefits
• Appendix D (PDF) - Minimization and Mitigation Measures Summary
• Appendix E (PDF) - Natural Resources Conservation Service Impact Rating Form
• Appendix F (PDF) - References
• Appendix G - Response to Comments (1-21)
  • Comments/Responses:
    • 1 to 13 (PDF)
    • 14 (PDF)
    • 15 to 19 (PDF)
    • 20 (PDF)
    • 21 (PDF)
• Appendix H (PDF) - List of Technical Studies Bound Separately
• Appendix I (PDF) - Memorandum of Understanding and Funding Commitment Correspondence