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EXHIBIT A <br /> Note : All costs and timeframes listed below are preliminary estimates and are therefore, subject to change . The County <br />will bid all <br /> projects and provide construction management services .-, with the exception of Projects A - 1 A -2 A-3 and- 13 - 1 . <br /> _F <br /> Project Description/ Estimated Timeframes <br /> Project Name Location Tasks Cost Start I Complete <br /> PART A - PROJECTS WITHIN THE MAIN AND SOUTH RELIEF CANAL BASINS <br /> Project No. A4 * Modify Main Relief Canal east of The existing radial arm gate <br /> the existing radial arm gate 43rd Avenue structure consists of three discrete <br /> structure at the Main Relief radial arm gates . The middle radial <br /> Canal arm gate is set approximately one- <br /> foot below the other two gates and <br /> serves as an overflow weir. When <br /> Note: Because this work the radial arm gates are opened, <br /> involves a critical water settled solids immediately upstream <br /> of the gate are re-suspended and <br /> control structure, the discharged into the Indian River <br /> construction time frame for Lagoon. This project will replace <br /> this project must be limited one or more of the radial arm gates <br /> to the dry season. with tilting-type weir gates . <br /> Purpose : ( 1 ) to provide more <br /> accurate water level control, (2) to <br /> allow more water to be retained <br /> upstream of the structure, and (3 ) to <br /> minimize release of settled solids <br /> when the water level is lowered . <br /> Design and Permitting $ 101000 2/2003 5/2003 <br /> Land Acquisition ( 1 ) N/A N/A <br /> Construction $ 1009000 12/2003 2/2004 <br /> 3 <br /> CADocuments and Settings\mfell\Local Settings\Temporary Internet Files\OLK3\Revised Page 1 to the SJRWMD Atachment A to Memorandum of Understanding <br /> - Revision dated 12-20-02.doc <br />