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THE CITY OF 6 WnL.�L \sL 1„NTON:� CITY COUNCIL AGENDA REPORT March 19, 2019 Engineering TITLE: APPROVE A PROFESSIONAL SERVICES AGREEMENT WITH CAROLLO ENGINEERS FOR THE NOT-TO-EXCEED AMOUNT OF $349,760 FOR PROFESSIONAL ASSISTANCE WITH THE CITY'S BI-ANNUAL WATER QUALITY IMPROVEMENT PROJECTS, CIP 17100 SUMMARY City water operations staff has identified two issues with the water supply and distribution systems that merit review and analysis from an engineering consultant firm that specializes in water production, storage and distribution systems. The first issue is the preservation of water quality at the Foothill Tank over the long term by analyzing different operational scenarios based upon current and future water demands. The study will include recommendations regarding tank and piping system improvements, and operational modifications if appropriate. The second issue is associated with three of the groundwater wells the City operates supplement water purchased from the Zone 7 Water Agency. Wells 5, 6, and 8 have been in operation for many years. While the wells remain productive, the ancillary well equipment is nearing the end of its expected life. The work will involve assessing the integrity of the wells and make recommendations on how to extend their longevity and functionality. The assessment will include analysis of structural, electrical and mechanical equipment at each well, as well as the chemical storage, dosing, and control systems. The study will also include recommendations for improving operational and maintenance efficiency. Staff recommends awarding a Professional Services Agreement to Carollo Engineers to investigate and assess these issues and provide recommended solutions. RECOMMENDATION 1. Approve the Professional Services Agreement with Carollo Engineers of Walnut Creek, CA, for a not-to-exceed amount of $349,760. 2. Authorize the City Manager to enter into the attached agreement. 3. Allocate $350,000 from Fund 422 Water Expansion Capital Improvement Program to CIP No. 17100. FINANCIAL STATEMENT The anticipated total expenditure for the study and recommendation phase of the project is $349,760. Staff recommends that City Council allocate $350,000 from Fund 422 Water Expansion Capital Improvement Program to CIP No. 17100 to fund this project.