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1ZL PUBLIC WORKS 1 ZL 1. CANAL MONITORING DEVICES FOR NORTH, SOUTHAND MAINRELIEF CANALS TO MEASURE NITROGEN/NUTRIENT LOADS ENTERING INDiANRIVER LAGOONDECLARATION OF SOLE SOURCE FOR INSTALLATION OF THREE "IfILROY" SYSTEMS (Clerk 's Note. This Item was heard following 12. A. 1 . , and is placed here for continuity.) Public Works Director Chris Mora summarized his memorandum dated December 10, 2012, regarding the studies performed by the U. S . Environmental Protection Agency (EPA) , the Florida Department of Environmental Protection (FDEP), the St. Johns River Water Management District (SJRWMD), and others that have shown that the Indian River Lagoon basin is becoming more polluted due to drainage canals discharging nitrogen and phosphorus into the Lagoon. He reported that staff had consulted with Dr. Edith Widder of the Ocean Research and Conservation Association (ORCA), and found that a canal monitoring system, the "Kilroy", would be capable of measuring the nitrogen content and flow volume of the water, and transmit the measurements to a nearby station for compilation. Since ORCA is the only known vendor reasonably capable of providing this service, he recommended the Board approve a sole source purchase and installation of the Kilroy monitoring system in the North, South, and Main Relief Canals, which empty into the Lagoon. Director Mora pointed out that the phosphorous testing science is still being developed, and the process of measuring the water' s phosphorous levels is more difficult and labor intensive because it requires grab sampling of the water with routine sampling. He revealed ORCA ' s recommendation that the County implement the nitrogen and flow volume testing program to show how much water is going into the Lagoon from the three main relief canals, and he proposed installing the devices into each one. December , 18 , 2012 27 RK 4 3 PG 3 19