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9 THE CITY OF - "' CITY COUNCIL AGENDA REPORT LEASANTON. January 19, 2021 Engineering TITLE: ACCEPT PUBLIC IMPROVEMENTS PERFORMED BY OLYMPUS AND ASSOCIATES, INC. AND APPROVE CONTRACT AMENDMENT NO. 1 FOR THE THIRD-PARTY COATING INSPECTION FIRM CSI SERVICES, INC. FOR AN ADDITONAL $2,505, INCREASING THE AGREEMENT AMOUNT TO $102,458 FOR THE BI-ANNUAL WATER TANK CORROSION REPAIRS PROJECT, CIP NO. 18127 SUMMARY This Water Enterprise funded Capital Improvement Project consisted of rehabilitating the upper Ruby Hills, Moller Ranch, and Laurel Creek water tanks. The scope of work included replacement of access hatches and ladders, replacement of tank vents, structural repairs to some interior tank roof supports, and removal and replacement of all tank interior corrosion-prevention coating systems. The cathodic protection systems for Ruby Hills and Laurel Creek tanks were replaced. The Ruby Hills and Moller Ranch tanks exterior corrosion prevention coatings were removed and replaced. Rehabilitation of the water tanks will eliminate corrosion, improve water quality, and increase the service life of the reservoirs. The project included additional coatings to the tanks, extending the duration of the project and requiring additional inspection work. Amendment No. 1 with CSI Services, Inc. is for the additional days of inspection. Construction of the project is complete and ready for acceptance by City Council. RECOMMENDATION 1 . Accept the improvements for the project and authorize the City Clerk to file a Notice of Completion. 2. Authorize payment of the retention in the amount of $92,991 to Olympus and Associates, Inc. 30 days after recordation of the Notice of Completion. 3. Authorize the City Manager to enter contract Amendment No. 1 with CSI Services, Inc. for additional third-party coating specialty inspection for an additional $2,505.11 for a total not-to-exceed amount of $102,458. 4. Authorize the transfer of the project's remaining balance of $897,453 to the fund respective sources. Of that amount $696,137 will be returned to the Water Expansion fund and $201 ,316 returned to the Water Replacement fund. FINANCIAL STATEMENT Funding for this project totaled $3,116,137 (as outlined in Attachment 1). Expenditures totaled $2,218,684, leaving a remaining balance of $897,453. Staff recommends returning the remaining balance to the funding sources; $696,137 will be returned to the Water Expansion fund and $201 ,316 will be returned to the Water Replacement fund.