18 - Laserfiche WebLink

o Response Level compliance o Notification Level compliance o Below detection limits • Treatment technology evaluations including: o Blending o Granular activated carbon (GAC) adsorption o Ion exchange (IX) resin treatment o Reverse osmosis treatment • Alternatives comparisons that includes o Determination of required facility upgrades to support o Construction feasibility o Residual management strategies o Operational staffing impacts and certification needs o Capital costs and O&M costs o Pros and cons comparison • Implementation plan in coordination with City to implement recommended full- scale treatment systems. The estimated schedule for completion of the feasibility study is February 2020. The fee for the feasibility study is $200,000, which will require allocation from the Water Fund into CIP 17100 to cover these additional expenses. If the City elected to proceed with implementation of PFAS treatment, the design and construction implementation schedule is estimated to be a minimum of 18 months and could be longer due to other factors such as permitting, and availability of materials. The design and construction costs are unknown at this time and will be estimated during the feasibility study. Currently, the CIP has budgeted improvements of $1.5 million for Well 8 in FY 21/22 and $1 .5 million for Well 5 and 6 in FY 22/23. However, these estimates were primarily based on extending the useful life of the facility and improving disinfection systems. PFAS treatment facilities will likely exceed these budgets and require additional engineering resources to manage the design and construction of the project. 2. Perform Water Capacity Evaluation and include analysis of impact to City's water distribution system when utilizing alternative water supplies to Wells 5, 6, and 8. A water capacity evaluation builds a hydraulic model of the water distribution system to evaluate its ability to properly deliver water (i.e. at adequate pressures) to meet demands during average, peak, and emergency conditions. Water capacity evaluations require significant coordination with the Community Development Department to define buildout service area characteristics and potential water users, the Water Resources Section to define future water demands, Utilities Division to understand operational strategies to maintain water quality on a day to day basis, and Zone 7 to determine flow and pressure capacities at City turnouts. The outcome of the evaluation would be a list of recommended capacity-related improvements such as pumping, storage, and piping capacity improvements to be able to properly meet future demands. Page 11 of 13