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best material out of the sand mines and onto the beaches. He felt the upland source would not <br />only be readily available, but also the best economic alternative. <br />Vice Chairman Flescher opened the floor to public comment. <br />Steve Smith, Ranch Road Lake Mine of Vero Beach, introduced Dr. Gary Zarillo, <br />Professor, Florida Institute of Technology (FIT), who provided the Board with background and <br />statistics on sand sources and grain size distribution. He clarified points relating to the suitability <br />and expected performance of the upland sources, and believed both would perform equally well. <br />Commissioner Solari said he wanted to know what the County needs to do to persuade <br />FDEP to provide the permit so we can protect our beach property. <br />Dr. Zarillo suggested staff ask the owners of the sand mines how to approach the <br />situation. He spoke about the comparisons in sand sources, statistical pools, and suggested <br />mixing and matching the sources to cure the "hot spots." <br />Mr. Brantley agreed with Dr. Zarillo's comments. He believed the engineering design <br />tools that are available focus on the mean grain size and work very well. He emphasized that a <br />1/10mm difference in grain size has shown to be significant in the design and construction of the <br />projects around the state. He acknowledged that reducing the amount of material due to the <br />slope, agrees with generally accepted engineering practices in the monitoring of Florida <br />constructed projects over the past couple decades. <br />Michael Ochsner, 130 Waterway Lane, emphasized the urgency of the project and <br />supported the offshore sand source. <br />Nick Stewart, President of Stewart Mining, spoke about the mean grain sizes of the <br />offshore cores and how they relate to the onshore cores. <br />26 <br />October 13, 2009 <br />