City of Morgan Hill Sewer System Master Plan 2017

City of Morgan Hill Sewer System Master Plan

TABLE OF CONTENTS

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TABLES Table ES.1 Sewer System Performance and Design Criteria .............................................ES-6 Table ES.2 Existing Sewer Pipe Inventory .........................................................................ES-7 Table ES.3 Historical Flows at the SCRWA Plant...............................................................ES-9 Table ES.4 Average Daily Flows at Buildout of Project Area ..............................................ES-10 Table ES.5 Capital Improvement Program .........................................................................ES-13 Table 1.1 Unit Conversions..............................................................................................1-7 Table 1.2 Abbreviations and Acronyms............................................................................1-8 Table 2.1 Existing and Future Sewer Service Area..........................................................2-4 Table 2.2 Historical and Projected Population..................................................................2-7 Table 3.1 Sewer System Performance and Design Criteria .............................................3-4 Table 3.2 Unit Flow Factors Analysis ...............................................................................3-7 Table 3.3 Average Daily Sewer Unit Flow Factors ...........................................................3-8 Table 3.4 Precipitation Depth-Duration-Frequency ..........................................................3-16 Table 3.5 Storm Events Analysis .....................................................................................3-17 Table 4.1 Existing GIS Pipeline Inventory ........................................................................4-6 Table 4.2 Existing System Lift Station Inventory ..............................................................4-10 Table 5.1 Historical Flow Data and Peaking Factors........................................................5-3 Table 5.2 Sewer Flow Distribution ...................................................................................5-5 Table 5.3 Average Daily Flows at Buildout of the Project Area ........................................5-7 Table 5.4 Design Flows ...................................................................................................5-9 Table 6.1 Modeled Sewer Pipe Inventory ........................................................................6-4 Table 6.2 Flow Monitoring Sites.......................................................................................6-7 Table 6.3 Calibration Results Summary...........................................................................6-8 Table 7.1 Schedule of Improvements ..............................................................................7-6 Table 7.2 Planned Operational Improvements .................................................................7-15 Table 8.1 Capacity Improvement Unit Costs ....................................................................8-3 Table 8.2 Capital Improvement Program .........................................................................8-6 Table 8.3 5-Year Improvement Phasing...........................................................................8-11 Table 8.4 Suggested Expenditure Budget........................................................................8-12

APPENDICES Appendix A Sanitary Sewer Flow Monitoring and Inflow/Infiltration Study, 2014 (V&A) Appendix B Hydraulic Model Calibration Exhibits Appendix C Condition Assessment Exhibits

August 2017

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City of Morgan Hill Sewer System Master Plan