City of Morgan Hill Sewer System Master Plan 2017

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August 2017 1-5 City of Morgan Hill
Sewer System Master Plan
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 model. 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