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BACKGROUND On January 9, 2001 , the Board of County Commissioner ' s approved the overall Supervisory Control and Data Acquisition System ( SCADA) plan for the Water Production and Distribution System . This system is a single comprehensive, Countywide water production SCADA System to serve the County ' s Water Production and Distribution Division . As part of two earlier Agenda Items , the Board of County Commissioner ' s approved Staff to proceed with Phases I and H of the plan , which dealt with both the North and South County Reverse Osmosis Water Treatment Plants (see attached Agenda Items dated 03 /01 /01 and 12/05 /00) . ANALYSIS Phase II is nearing completion . The remaining portion of Phase II is nearing completion by the Countys ' Computer Services Division . Staff is prepared to proceed with phase III of the project, as out lined in the earlier agenda items and the diagram below . The estimated cost for Phase III is $48 , 500 . The overall SCADA plan/budget as outline for the project and approved by the Board, is under budget and the scope has not changed . As outlined below, $44, 100 of the $48 , 500 is for system hardware ( items A thru F) . These items will be supplied under work authorization #3 with ROCHA Controls Inc . in the amount of $44 , 100 . As part of the implementation of the system staff has requested that a radio survey of the radio frequency and existing equipment be conducted . The system is currently experiencing minor intermittent signal disruptions , which results in a loss of system communication between the two Water Plants . The survey will determine the source and correct counter measures to be taken to address the signal interruptions . Staff has been provided with a scope of services under Work authorization #4 with ROCHA Controls Inc . in the amount of $ 5000 to conduct the survey . It is staff intention to utilize apportion of the projects ' contingency to fund the radio survey . The current amount available as project contingency is $ 18 , 326 (Phase I : $ 3766 + Phase II : $ 10 , 160 + Phase III : $4400 = $ 18 , 326) . System Upgrade System Upgrade / Phase Description Estimated Actual Priority !' P Phase Costs (S) Cost (S) Phase I . NORTH COUNTY REVERSE OSMOSIS ➢ Upgrade the Human Machine Interface (HMI ) terminal and software with the latest version of Rockwell Software ( RS- VIEW) for the North County RO. High Service Pumps station. Currently, the existing terminal and software is not compatible with other plant (North and South Reverse Osmosis ) systems . A . Equipment, programming, and startup services for replacement of the Existing HMI at North County Reverse Osmosis . (Estimated Cost $ 13 , 134 - R&R Fund) 513,134 .00 B . Remove existing Panel view monitor and modify control panel for new Unit converts existing application and integrate plant wide screens. (Estimated Cost $4,950 - R&R Fund ) $4,950 . 00 r Miscellaneous Computer hardware and periphery upgrades as determined by Computer Services Dept (Estimated Cost $25,000 — 50% Capacity Charge Fund / 50% R& R) ➢ Contingency at approximately 10% to be utilized as approved by the Director of Utilities. $25, 650.00 Total Estimated Cost (rounded) Phase Q. MAIN PLANTS - $47,500 $43, 734 . 00 ➢ Upgrade the six (6) System HMI packages to latest version Allen Bradlev — RS — View Software . The current software version being utilized is 6 .00 . 41 . The current and latest revision is 6. 30. This software upgrade will eliminate some nuisance errors currently being experienced by the operators . Estimated Cost (b .x $2 ,350 = $ 17 , 100 - R& R Fund) $77, 100. 00 i Upgrade the telephone leased lines modems at both plants to handle a high transfer rate to 19,200 bites per second (BPS ). The current modems are 9600 BPS . This upgrade will reduce plant operator's system watt time. Estimated Cost (2 x $ 1 ,310 = $2 ,620 - R&R Fund) $2, 620 .00 Add Allen Bradley communication modules (computer cards) at both plants to bridge the independent Data Highway (DH) networks . Estimated Cost (2 x $3, 410 = $6, 320 - Capacity Charge Fund) $6,820. 00 i ,Merge North and South Reverse Osmosis HMI applications (computer screens) to provide control of _ both plants from either location_ Estimated Cost ! '- x $20 ,000 = .540,000 - Capat. it, Charge Fund) NOVEMBER 6 , 2001 b E t t_ Edi i 1} - 94 -