Calvin Giordano - Construction Management

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e : �6 A • ,� Calvin. Giordano & Associates, Inc. \ J E A C F P I I O N A l SOLUTIONS ® HALLANDALE BEACH DRAINAGE IMPROVEMENT PROJECTS ® Hallandale Beach, Florida 5 T ..I:. ':d L` E f K. ® ,CTI """')' {.,OLS ` 'tl1 a• ,.rb. ^ 41 ; r Client S E F- y' ie. I +k! L 1 -1 ']1 / ' I(1 City of Hallandale Beach ♦w w,l 4 ® .. .7:1-1.:,-' v IN i a ATI I tit i16:249.;Jr ,!Ir- , Contact information ® ' �.41 � ; .r n ' '• �-la-1• ! ., , :-. at time of project: ® ,V. gia rt"" rur'.--/•=r—r-1. ' j .,A Nfr 'Sir- .`r x: _ Richard Labinsky, PE ' + +r. .:117::-N, . r City Engineer • Lam` !i ! " ) i �!?�1 630 Northwest 2nd Street :'r It ►' ® t .s j 51 „qq . / Hallandale Beach,FL 33009 -4;bftW�> &P J. i .r ,0u c I. .:t 1"t 9 Air �' - (954)457-1620 • 09 �,�a-1,-. -1I_-]E ';®` y._ 2.:_____ —�, ./ ! t (954)457-1624(fax) ® �(}��rL4 � `D t! :sl-�5 ,4,„ ;F' 1 Project Date ® g yyPi 1 •It-r It CI12S JAS 0 : • "1;1-4s. , l r 2009 ongoing ® CGA designed and permitted the design system improvements for the Hallandale Beach NE ® Quadrant Drainage Basin, which encompasses an area of approximately 170± acres. This tidally Services Provided influenced basin is bounded by Atlantic Shores Boulevard, Federal Highway (US 1), Hallandale Drainage Study ® Beach Blvd (HBB), and NW 14th Avenue in the City of Hallandale Beach, Florida. Land uses pump Station& Drainage ® within the study area are primarily single family residential and multi-family residential. Well Design and Permitting • There are a number of drainage facilities within the project area with limited conveyance capacity and high head loss. Average lowest floor elevations average between 5.5' to 6.5' NGVD, Approx Construction Cost • and roadway elevations are approximately 3.7' to 3.9' NGVD within the study area. The NE& SW Quadrants: ® conveyance system is subject to the effects of tidal fluctuation; and therefore at times there is S14 million virtually no head available to drain the basin. The lack of conveyance capacity within this system ® has led to the complete inundation of the roadway system for extended periods during storm Consultant Cost ® events of lesser frequency than that required by SFWMD. Using ICPR, CGA modeled a proposed system with an improved collection system conveying NE & SW Quadrants: ® water to two duplex pump stations connected to a total of sixteen wells.These sixteen new wells 5700,000 ® will be pressurized with 15 feet of head in order to produce the necessary discharge into the G- III aquifer. In addition, the existing collection system piping will be upsized in order to achieve Principal-in-Charge ® adequate flows into the proposed pump stations. The existing gravity outfalls will be left intact, Karl Kennedy,PE ® with the only modification being the installation of a 'backflow" flap gate in a City structure at le the downstream end of the gravity system. The flap gate will stop the tidal water from flowing Project Manager back into the gravity system at higher tides. The project is permitted through FDEP and the • Broward County Environmental Resource Department. CGA, in conjunction with the City of Jenna Chamberlain, PE Hallandale Beach, worked with FEMA to get an expansion approved for the existing HMGP grant ® for the NE Quadrant.. The expansion was approved to provide $15 million in funding for this Drainage Engineers ® project and another project for the adjacent neighborhood. The SW Quadrant neighborhood Douglas Taylor, PE ® project is currently in the design and permitting phase and follows similar design strategies for Luis Pimentel, El alleviating the flooding problem. ® Firm's Role ® Prime • • • O Page 21 17