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Contract SF611AA <br /> Amendment #2 <br /> B . PART B — CONSTRUCTION WITHIN THE NORTH RELIEF CANAL BASIN <br /> Project No. B- 1 : Modify the North Relief Canal near 58th The existing radial arm gate <br /> existing radial arm gate Avenue structure consists of three discrete <br /> structure at the North Relief radial arm gates . The middle radial r" , <br /> Canal arm gate is set approximately one- <br /> foot below the other two gates and `" Mk <br /> serves as an overflow weir. When <br /> the radial arm gates are opened, <br /> settled solids immediately upstream <br /> of the gate are re -suspended and <br /> discharged into the Indian River <br /> Lagoon . This project will replace <br /> one of the radial arm gates with a <br /> tilting-type weir gate . Purpose : ( 1 ) <br /> to provide more accurate water <br /> level control , ( 2) to allow more <br /> h u <br /> water to be retained upstream of the <br /> structure, and ( 3 ) to minimizew ; <br /> release of settled solids when the <br /> water level is lowered . <br /> g g $ 16271 5/ 15/200 <br /> '3 <br /> Design Permitting , <br /> n 3 complete <br /> Land Acquisition ( 1 ) N/A N/A <br /> Construction $ 173 ,064 . 78 10/2003 10/2005 <br /> B � . I • .. •€F. ,.' r . ':., r � .. . . ".,.. ; . . '3. «. . ... a. r sew.' ',�'` <br /> ' .`3 ..' <br /> Project No. mmediately upstream of the Install floating debris booms across <br /> A <br /> Floating debris booms in the proposed North Relief Canal the canal to trap floating solids . " <br /> North Relief Canal (This vortex treatment system) Periodically clean using mechanical <br /> ro ect will be designed andequipment . <br /> J g <br /> project <br /> constructed concurrently withthe Veftex type treatment Design and Permitting (5 ) See times for <br /> Project B - <br /> 3 <br /> system in the North Relief Land Acquisition ( 1 ) N/A N/A <br /> Canal) Construction <br /> (5 ) See times for Project B - <br /> K <br /> e "<" a r <br /> Me 141q <br /> MIP JW1 <br /> Page 8 of 9 <br />