RES 2025036 - Laserfiche WebLink

Element 8 – System Evaluation, Capacity Assurance, and Capital Improvements City of Pleasanton Sewer System Management Plan, July 2025 30 (e.g., proximity to storm drains or Waters of the State), location (road type), and community impact (proximity to commercial areas and public facilities). A weighting system was applied to each of the LOF and COF factors to determine an overall risk score and risk category (very low, low, medium, or high), reflecting its priority. Based on the risk assessment results, gravity sewers were identified for continued preventive maintenance (pipes without major defects) or R&R. Pipes with R&R recommendations of medium or high-risk ratings were identified for inclusion in the City’s long-term CIP. The City plans to expand the condition assessment evaluation to the remaining sewer pipes that have been inspected/coded since June 2024 (~103,000 linear feet inspected and coded and ~110,000 linear feet inspected and awaiting coding). Moving forward, the City plans to maintain an overall 7-year inspection frequency. The City will also consider making future refinements to COF criteria to more specifically identify sewers in other environmentally sensitive areas (e.g., steep terrain, high groundwater areas, areas near creeks, etc.) or areas that may be more vulnerable to the impacts of climate change. As part of the long-term CIP’s 2-year review and 6-year update process, the City will review its CCTV inspection program to incorporate up-to-date information. 8.2.2: Large Diameter Sewers, Siphons, and Manholes Inspection of the City’s large diameter sewers, siphons, and manholes were not performed or conditions evaluated as part of the City’s current CIP. Budget for these inspections and condition assessments will be included in the City’s long-term CIP currently under development. Results of the inspections will be evaluated, and recommended improvements included in future 2-year reviews and 6-year updates of the long-term CIP. 8.2.3: Lift Stations As discussed in Section 4, lift stations are regularly inspected by operators utilizing the City’s lift station inspection forms. The lift stations also undergo an engineering assessment as part of the long-term CIP process. The last engineering assessment was completed in January 2025 by Woodard & Curran. The evaluation process included an initial review of record drawings and miscellaneous documents followed by onsite inspections and assessments of each station’s configuration, process condition, mechanical condition, observed structural condition, safety, operations and maintenance insight, electrical, and overall long-term reliability. In addition, Woodard & Curran coordinated with City staff for input on which lift stations present the highest risk in terms of day-to-day operations. The assessment also incorporated the findings and recommendations of a separate generator study completed by TJC and Associates. During the inspection of each lift station, issues were highlighted that may warrant additional attention or future improvements. For each facility, these identified issues were given numerical criticality (1 = Fair, 2 = Poor, 3 = Crucial) and categorized into six (6) groups: Process, Mechanical, Electrical, Structural, Site, and Health & Safety. Recommended lift