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- Vista Grande Drainage Basin Draft Report
Vista Grande Drainage Basin Draft Report
- Title Page and Table of Contents (PDF)
- Title
- Distribution
- Table of Contents
- List of Tables
- List of Figures
- 1. Executive Summary (PDF)
- 2. Introduction (PDF)
- 2.1 - Purpose
- 2.2 - Project Background
- 2.3 - Previous Studies
- 2.4 - Ongoing Studies
- 2.5 - Acknowledgements
- 2.6 - Limitations
- 3. Watershed Hydrology and System Hydraulics (PDF)
- 3.1 - Watershed Description
- 3.2 - Preliminary Design Criteria
- 3.3 - Preliminary Hydraulic Evaluation
- 3.4 - Water Quality Improvements
- 4. Description of Alternatives (PDF)
- 4.1 - Alternative 1A - Beginning of Canal to New Outfall
- 4.2 - Alternative 4 - South of County Line along Northgate Drive
- 4.3 - Alternative 5B - 1/3 up Canal to Existing Outfall
- 4.4 - Alternative 6 - 2/3 up Canal to Existing Outfall
- 4.5 - Alternative 7 - Parallel Tunnel South of the Existing Tunnel
- 4.6 - Alternative 9 - Detention Basins
- 4.7 - Alternative 10 - Stormwater Re-Use Opportunities
- 5. Geologic and Geotechnical Assessments (PDF)
- 5.1 - Regional and Site Study
- 5.2 - Regional Seismicity
- 5.3 - Geotechnical Literature Research
- 5.4 -Anticipated Subsurface Conditions at Westlake Park
- 5.5 -Anticipated Ground Conditions for New Tunnel
- 5.6 -Recommended Tunneling Methods
- 6. Preliminary Assessment of Construction Method and Constructability Issues (PDF)
- 6.1 -Construction Approach
- 7. Potential Utility Conflicts and Relocation Requirements (PDF)
- 7.1 - Electric Utilities
- 7.2 - Telephone
- 7.3 - Storm Drains
- 7.4 - Sanitary Sewer
- 7.5 - Water Pipelines
- 7.6 - Natural Gas Pipelines
- 8. Preliminary Environmental Considerations (PDF)
- 8.1 - Ecological Setting
- 8.2 - Overview of the Environmental Regulatory Process
- 8.3 - Agency Consultations
- 8.4 - Environmental Characterization Assessment of Alternative Tunnel Alignments
- 9. Evaluation of Alternatives (PDF)
- 9.1 - Review of Findings
- 9.2 - Screening Methodologies
- 9.3 - Preliminary Evaluation
- 9.4 - Sensitivity Analysis
- 10. Summary and Recommendations (PDF)
- 10.1 - Summary
- 10.2 - Recommendations
- 11. References (PDF)
- 12. Revision Log (PDF)
- Appendix A - Tables
- Appendix B - Figures
- Appendix C - Conceptual Design Figures
- Fig A.1 - General Arrangement (PDF)
- Fig A.2 - Existing Facilities and As-Built Designs (PDF)
- Fig A.3 - Alternative 1A Site Map (PDF)
- Fig A.4 - Alternative 1A Plan and Profile (PDF)
- Fig A.5 - Alternative 1A Portal (PDF)
- Fig A.6 - Alternative 4 Site Map (PDF)
- Fig A.7 - Alternative 4 Plan and Profile (PDF)
- Fig A.8 - Connection to 54-Inch Pipe Along Cliffside Drive (PDF)
- Fig A.9 - Alternative 4 Portal (PDF)
- Fig A.10 - Alternative 5B Site Map (PDF)
- Fig A.11 - Alternative 5B Plan and Profile (PDF)
- Fig A.12 - Alternative 5B Portal (PDF)
- Fig A.13 - Alternative 6 Site Map (PDF)
- Fig A.14 - Alternative 6 Plan and Profile (PDF)
- Fig A.15 - Alternative 6 Portal (PDF)
- Fig A.16 - Alternative 7 Site Map (PDF)
- Fig A.17 - Alternative 7 Plan and Profile (PDF)
- Fig A.18 - Alternative 7 Portal (PDF)
- Fig A.19 - Linear Gross Solid Removal Devices for All Alternatives without Storage (PDF)
- Fig A.20 - Detention Basins Plan and Profiles (PDF)
- Fig A.21 - Connection to Box Culvert in Westlake Park (PDF)
- Fig A.22 - Storage Option Debris Screen at Canal Inlet Plan and Sections (PDF)
- Fig A.23 - Storage Option Debris Screen at Canal Inlet Plan and Sections (PDF)
- Fig A.24 - Storage Option Debris Screen at End of Canal Plan and Sections (PDF)
- Fig A.25 - Example Initial Tunnel Lining Typical Section (PDF)
- Fig A.26 - Example Final Tunnel Lining Typical Section (PDF)
- Fig A.27 - New Box Culvert (PDF)
- Appendix D - Regional Geologic Report (PDF)
- Appendix E - Geotechnical Assessment Report (PDF)
- Appendix F - Relative Cost Assessment (PDF)