AgdaPkt 2005-10-24 - Laserfiche WebLink

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, /é'-/ REPORT To the Honorable Mayor and City Council From the City Manager October 24, 2005 Subject Professional Services Agreement for Supervisory Control and Data Acquisition (SCADA) System design for recycled water distribution, storage and pumping facilities Recommendation By motion, approve the Professional Services Agreement with The EDCCO Group - Engineering and Control Solutions of San Carlos, CA for system design, inspection, programming, construction tasks and staff training, for the not-to-exceed amount of $90,880. Background The City's water, sewer and storm water pumping and storage facilities are monitored and controlled by a centralized computer SCADA system. The system uses high-speed SBC data lines to continuously monitor and record utility systems operational performance and track problems and lor abnormalities. The system has the capacity to receive alarms from any remote site, assess the nature of the alarm and then automatically page on-call personnel, who acknowledge the alarm electronically as they are mobilizing to address the problem. The computerized equipment and its software also has the capability to control pumping and reservoir levels, and automatically reduce or stop pumping should a problem occur in the system. While some of these features have not been utilized, there are now benefits of activating these advanced features as the Recycled Water Project is in the final design and early construction phases. The EDCCO Group has been on contract with Public Works Services for maintaining the City's SCADA system since 1997. At that time they were brought in to analyze and mitigate several major problems created by other contractors, vendors and the telephone company. EDCCO has an excellent performance record with the City and has in-depth knowledge and familiarity with the City's SCADA system and remote utilities sites. Integrating the recycled water system into the City's SCADA as it is constructed and put into service presents an important technical challenge: Maintaining a 10 pounds per square inch (psi) pressure difference between the existing drinking water distribution system and the new recycled water pipelines. This 10 psi differential will be essential in preventing recycled water from entering any part of the recycled water system should there be an unauthorized cross connection between the two separate water systems. The SCADA system will continuously provide the necessary electronic monitoring, pump control information, and decision processing to maintain the drinking water system at 10 psi higher pressure than the recycled water system - even if either system looses pressure (due to pipeline breaks, for example). Alternative The alternatives to authorizing this agreement are: . Not authorize this agreement and direct staff to issue a Request For Proposals.