City of Morgan Hill Sewer System Master Plan 2017

Chapter 4 – Existing Sewer Collection Facilities. This chapter provides a description of the City’s existing sanitary sewer system facilities including gravity trunks, force mains, lift stations, and sewer collection basins. The chapter also includes a brief description of the South County Regional Wastewater Authority Wastewater Treatment Plant. Chapter 5 – Sanitary Sewer Flows. This chapter summarizes historical wastewater flows experienced at the SCRWA WWTP and defines flow terminologies relevant to this evaluation. This chapter discusses the wastewater flow distribution within the five basins, and identifies the design flows used in the hydraulic modeling effort and capacity evaluation. The design flows include the existing condition (existing customers) and the projected ultimate buildout scenario. Chapter 6 – Hydraulic Model Development. This chapter describes the development and calibration of the City’s sanitary sewer system hydraulic mode l. Hydraulic network analysis has become an effectively powerful tool in all aspects of sanitary sewer system planning, design, operation, management, and system reliability analysis. The City’s hydraulic model was used to evaluate the capacity adequacy of the existing system and to plan its expansion to service anticipated future growth. Chapter 7 – Evaluation and Proposed Improvements. This section presents a summary of the sanitary sewer system capacity evaluation during peak dry weather flows and peak wet weather flows for the existing and buildout flows. The recommended sanitary sewer system improvements needed to mitigate capacity deficiencies are also discussed in this chapter. Chapter 8 – Capital Improvement Program. This chapter provides a summary of the recommended Capital Improvement Program (CIP) for the City of Morgan Hill’s sanitary sewer system. The program is based on the evaluation of the City’s sewer system, and on the recommended projects described in the previous chapters. The CIP has been prepared to assist the City in planning and constructing the collection system improvements through the ultimate buildout scenario. This chapter also presents the cost criteria and methodologies for developing the capacity improvement costs. 1.6 ACKNOWLEDGEMENTS Obtaining the necessary information to successfully complete the analysis presented in this report, and developing the long-term strategy for mitigating the existing system deficiencies and for accommodating future growth, was accomplished with the strong commitment and very active input from dedicated team members including:

x Karl Bjarke , Public Works Director/City Engineer x Dan Repp , Deputy Director of Utility Services x Scott Creer , Deputy Director for Engineering x John Baty , Senior Planner x David Gittleson , Associate Engineer x Mark Rauscher , Engineering Technician

August 2017

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City of Morgan Hill Sewer System Master Plan