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During the design of the project, Carollo reviewed all available RCS on the market and identified UGSI as the system able to meet the demands of the City's project. UGSI provided a complete pre-packaged system including a unique chemical feed control system that has a proven successful history in similar applications. The RCS system will be housed in a prefabricated shed that is approximately nine feet wide, eight feet tall and 28 feet long. At the Foothill site, the RCS unit will be placed near the existing pump station within the current parking lot (see Attachment 2 for location). At the Sycamore site, the RCS unit is being placed on an existing roadway turn-around (see Attachment 3 for location). The water quality testing results demonstrated that the chemical feed will only be necessary primarily in the summer and fall when nitrification is known to occur. The RCS units are designed to be remotely operated and monitored through the SCADA system. After the initial start-up period, it will only require weekly site visits matching the current operation/maintenance schedules for each of the reservoir tanks. Bids Sealed bids for this project were opened on January 29, 2021. A total of eight bids were received, ranging from $1,471,000 to $2,443,000. The lowest bid was submitted by Cazadoro Construction, Inc. in the amount of$1,471,000 (see Attachment 4 for the bid summary). This is approximately 22.6 percent higher than the Engineer's Estimate of $1.2 million. However, four of the other bids received were within five percent of the lowest bid, so even though the lowest bid is higher than Carollo's project estimate, the low bid is thought to be a competitive bid. All other bid documents were found to be in order and past work performed by Cazadoro was verified to be satisfactory. Staff recommends award of the construction contract to Cazadoro for $1,471,000. Consultant Services Carollo, the project designer, will be providing construction support services to review shop drawings, provide responses to requests for information, and periodic inspections. In addition, Carollo will also provide start-up support and an operational control manual. Carollo's electrical subcontractor will review the electrical components of the project and provide site inspections. See Attachment 5 for the professional services agreement and scope of work. Under an existing on-call survey contract with the City, Ruggeri-Jensen-Azar will be providing property line staking for the installation of fencing along shared property lines. Under another existing on-call contract with the City, Tesco Controls, Inc. will be providing SCADA control integration between the new RCS systems and existing SCADA system which is used to operate the City's potable water system. The work shall include new SCADA control panels, field work and software programming. Budget A total of$1 million is budgeted in the Water Quality Improvements at Lower Zone Storage Tanks, CIP No. 20156, for the construction of the project. A total of$105,911 is Page 3 of 5