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Sanitary sewer master plan presented: modeling, deficiencies and phased CIP
Summary
Staff and consultant presented the sanitary sewer master plan, describing hydraulic modeling, GIS integration, an ordered CIP list of 13 projects, and the three-tier categorization (Category 1: immediate capacity fixes; Category 2: to serve future development; Category 3: condition-driven replacements).
Public Works Director Hamza Javed and consultant Jeff Tarantino outlined the sanitary sewer master plan, explaining the plan's role as a "living document" that identifies existing deficiencies and schedules priority capital projects to maintain reliable sanitary service for the community.
Tarantino described use of a modern hydraulic model integrated with GIS to evaluate existing conditions and projected flows under full buildout scenarios. He said the team identified pipes reaching the end of useful life and classed projects in three categories: Category 1 to address current capacity deficiencies, Category 2 to provide capacity for projected future development, and Category 3 for condition-based replacements. "Our model identified system deficiencies both under existing operating conditions," Tarantino said.
The master plan lays out phased capital improvements so that some pipelines will be upsized or replaced in the near term and others scheduled over a multi-year horizon. Tarantino explained that Category 1 projects would be implemented first to reduce risk of sanitary sewer overflows, while Category 2 projects are sized to accommodate potential additional equivalent dwelling units (EDUs) allowed by the general plan.
