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Contract #SF611 AA <br /> Amendment #3 <br /> Project Description/ Estimated Timeframes <br /> Project Name Location Tasks Cost Start Com tete <br /> Project No. 4: Modify the North Relief Canal near 58" Replaced the middle radial arm t' a t : <br /> j fY p � <br /> existing radial arm gate Avenue gate with a tilting weir gate. °iu Illl� i <br /> Lit <br /> structure at the North Relief Purpose : 1 to provide more sd r yar <br /> mP ( ) P xl " " s F)�3a <br /> Canal accurate water level control, (2) k� ti <br /> to allow greater retention nilip <br /> 7 � k <br /> upstream of the structure 3 topy"Bi ll 1 ��� 1 " " <br /> P ( ) „ q 2daun �� �, , p��p k yry , <br /> : o: li��tiht ,ltl n" ` r i Xdti r Mrd q ^ <br /> minimize release of settled solids i <br /> , 'I, <br /> When Water levels are lowered.. <br /> w.aXfXAW <br /> Design and Permitting $ 155740.31 5/ 15/2003 Complete <br /> Land Acquisition N/A N/A N/A <br /> Construction $ 1731'064 . 78 10/2003 Complete <br /> 10/2005 <br /> . o r ' , z i o 9 IXII , ,�:.x. lu„ ° . ..rw,. . '� ., y .5n .k• r. �., y .. . . <br /> '„ ,nix. ... <br /> .. ,—.:.. utvi" un r.=X ,G,�3 ,3IiXIIM1lmli '�� 1i41� '. � # " <br /> : t9, S <br /> )t <br /> di <br /> I <br /> 5 <br /> t N <br /> Project : Immediately upstream of the Install a floating debris boom, a <br /> J Y tIt <br /> P i�' P t i s � 4i�ii4�9i � �xR 6iIX �i�Plly ' � �� II • �' tl9� G 9i,4i: <br /> Main Relief Canal Pollution existing spillway structure in sediment removal system (sump) diM, i <br /> Control System the Main Relief Canal and a debris/trash screening system <br /> constructed in series to remove <br /> solid particles, aquatic plants, trash krR'a d ; F r <br /> and debris carried by the Main 9 <br /> Relief Canal. The material collected <br /> by the trash screening system will <br /> be continuously removed usingX y <br /> mechanical equipment and the �'Xi ""Xnr ^�y " "Xi+ip <br /> a t „ <br /> collected sediment will be removed <br /> periodically by a pumping system. HH <br /> Design and Permitting $831l955 Estimated completion date <br /> is December, 2006 <br /> Land Acquisition 1 N/A N/A <br /> Page 5 of 6 <br />