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City of Redwood City Page 49 Sewer System Management Plan, March 2018 Element VIII SYSTEM EVALUATION AND CAPACITY Element VIII: ASSURANCE PLAN (VIII) System Evaluation and Capacity Assurance Plan - The Enrollee shall prepare and implement a capital improvement plan (CIP) that will provide hydraulic capacity of key sanitary sewer system elements for dry weather peak flow conditions, as well as the appropriate design storm or wet weather event. At a minimum, the plan must include: (a) Evaluation: Actions needed to evaluate those portions of the sanitary sewer system that are experiencing or contributing to an SSO discharge caused by hydraulic deficiency. The evaluation must provide estimates of peak flows (including flows from SSOs that escape from the system) associated with conditions similar to those causing overflow events, estimates of the capacity of key system components, hydraulic deficiencies (including components of the system with limiting capacity) and the major sources that contribute to the peak flows associated with overflow events; (b) Design Criteria: Where design criteria do not exist or are deficient, undertake the evaluation identified in (a) above to establish appropriate design criteria; and (c) Capacity Enhancement Measures: The steps needed to establish a short- and long-term CIP to address identified hydraulic deficiencies, including prioritization, alternatives analysis, and schedules. The CIP may include increases in pipe size, I/I reduction programs, increases and redundancy in pumping capacity, and storage facilities. The CIP shall include an implementation schedule and shall identify sources of funding. (d) Schedule: The Enrollee shall develop a schedule of completion dates for all portions of the capital improvement program developed in (a)-(c) above. This schedule shall be reviewed and updated consistent with the SSMP review and update requirements as described in Section D.14. VIII-1 System Evaluation - Collection System Master Plan The City of Redwood City Sewer Master Plan Technical Update, January 2013, identifies and prioritizes capacity and rehabilitation improvement projects and recommends a phased capital improvement program (CIP), including budget estimates, for implementing the needed capacity improvements to the wastewater collection system. The Master Plan included a hydraulic analysis with updated flow monitoring information and land use data. The update resulted in revisions to the City’s future capital improvement program for both existing and future capacity enhancement requirements. The update was prepared by West Yost & Associates, Inc. and was an update to the original 2008 Sewer System Master Plan prepared by RMC the Executive Summary of which is included in Appendix VIII-1. The 2013 Master Plan Update included the following chapters: 1. Background 2. Existing Sanitary Sewer System 3. Hydraulic Model Updates 4. Existing and Future Wastewater Flows 5. Capacity Analysis 6. Updated Capital Improvement Program 7. Project Implementation Recommendations 6.2.A. - Page 57