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Consent Agenda Item o, INDIAN RIVER COUNTY, FLORIDA i�r .4 ,l'„ ',.* < ,,.?,*./ DEPARTMENT OF UTILITY SERVICES Date: May 11, 2015 To: Joseph A. Baird, County Administrator From: Vincent Burke, P.E., Director of Utility Services ii9 Prepared By: Arjuna Weragoda, P.E., Capital Projects Manager Ara Subject: Work Order No.4 with Kimley Horn and Associates for SCADA Upgrades at South RO and North RO DESCRIPTIONS AND CONDITIONS: Indian River County Department of Utility Services (IRCDUS) owns and operates two (2) regional potable water treatment facilities. The southern portion of Indian River County is served by the Oslo Road Reverse Osmosis Water Treatment Plant which is rated for 8.57 million gallons per day (mgd). The Hobart Reverse Osmosis Water Treatment Plant is rated for 11.44 mgd. Both water treatment plants are controlled and monitored by programmable logic controllers (PLC) and computer interfaces (HMI — Human Machine Interface) which makes up the supervisory computer and data acquisition (SCADA) system. The SCADA system is crucial to the operation of the water system and the remote storage and pumping facilities. The current PLC systems at Hobart and Oslo RO plants are a mixture of various platforms of Allen-Bradley hardware: PLC5, MicroLogix (MLX), SLC and the newest ControlLogix (CLX). IRCDUS staff experienced periodic failures with the SCADA system in the recent past which resulted in requesting Kimley-Horn and Associates to conduct an evaluation of the existing PLC hardware and SCADA system in January, 2015. That evaluation found the existing PLC5 hardware which comprises the majority of the hardware at both water plants to be antiquated. In addition to the corrosion in the panels, hardware replacements would be difficult and costly to acquire because the manufacturing and support of the PLC5 hardware has been discontinued by the vendor (Allen- Bradley). The evaluation confirmed what the Utility plant operators have voiced all along in that the existing system is slow to respond to commands, has poor communication, and does not allow any scalability for future growth or any changes to plant controls. The hardware is in dire need of replacement before it fails and is inoperable. ANALYSIS: Staff requested that Kimley-Horn prepare a proposal for assessment, remediation, implementation bidding, and construction phase services for upgrades to the SCADA system at the SCRO and NCRO Water Treatment plants. The scope is more specifically described in the attached Work Order No.4. On November 4th, 2014, the Indian River County Board of County Commissioners approved the Extension and Amendment of the Continuing Contract Agreement for Professional Services with 72