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<br />J <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br /> <br />) <br />) <br />) <br />~1 <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />} <br /> <br />I <br /> <br />1 <br />I <br /> <br /> <br />SECTION 2 - QUALIFICATIONS <br /> <br />Calvin, Giordano & Associates, Inc. (CGA) has extensive experience with drainage design in South Florida <br />coastal areas. We have designed projects consisting of gravity systems to positive outfalls, pump stations to <br />positive outfalls, gravity systems to gravity drainage wells, pump stations to gravity drainage wells, as well <br />as pump stations to pressurized drainage wells, Moreover, we have permitted these systems through <br />Miami~Dade DERM and FDEP, and have a good working relationship with these two agencies, In addition, <br />_ we have designed a number of roadwaY's in Miami-Dade County coastal communities including NE 172nd <br />Street and Atlantic Isles Boulevard in Sunny Isles Beach. <br /> <br />With respect to drainage/storm water design and permitting in general, CGA has an extensive and solid <br />background. CGA has been the Drainage/Storm water Management Engineer for the South Broward <br />Drainage District (SBDD) since 1990. The firm was originally contracted to develop the first and only <br />district-wide basin hydrologic and hydraulic analysis and storm water comprehensive plan. CGA is also the <br />District Engineer for Indian Trace Development District (ITDD) and Bonaventure Development District <br />(BDD) and has completed basin wide hydrologic and hydraulic modeling, including the master drainage <br />system modeling, analysis and pumping station upgrades, large-scale mitigation/wetlands plans and the <br />updates of the comprehensive plan. CGA uses the latest in advance computer-assisted software <br />technologies such as the Interconnected Pond Routing (ICPR), HydraFlow, Cascade and other current <br />computer programs, <br /> <br />As District Engineer for ITDD, and BDD, our responsibilities include the review of all construction plans and <br />specifications for conformance with the District criteria, as well as representation at District Board <br />meetings to address technical and engineering issues. In addition, CGA has been successful in obtaining <br />several millions of dollars in grants to accomplish the District's goals and objectives <br /> <br />Furthermore, CGA has also developed storm water master plans for several municipalities including the <br />cities of Dania Beach, Lauderhill, West Park, Weston and the Town of Surfside. Within these cities and <br />towns we have provided a number of storm water related activities such as storm water modeling, <br />drainage calculations, pump station design and/or pump station rehabilitation, NPDES MS4 compliance, <br />culvert design, canal extensions and other related hydraulic structures. <br /> <br />Based on the initial information provided we believe that the drainage system for 174th Street will be a <br />combination of preserving existing positive outfalls (with upgrades for water quality and backflow <br />prevention), along with Class V drainage wells, A pump station will be necessary to provide the eight feet of <br />head allowed for "gravity" wells. Without the pump station, the head built up on the well casing would be <br />very slight prior to the storm water backing out of the grate on to the street. Also, note that it takes one to <br />one and one half foot of head in order for the freshwater to overcome the density of the brackish water and <br />push down into the G3 aquifer. Therefore, without a pump station, the drainage wells would not be <br />effective. <br /> <br />We designed and permitted a similar project in Surfside. The initial intent was to upgrade water quality <br />with the installation of the pump station and Class V wells; however, the system also served to greatly <br />reduce flood staging in those areas of the Town. A pump station was design to provide the eight feet of <br />head allowed by FDEP on the gravity wells and a pressure relief valve was placed on the system to open <br />back into the gravity system should the head exceed eight feet. This system went through permitting at <br />Miami-Dade DERM as well as FDEP. <br /> <br />In Hallandale Beach, we designed a similar yet much more complex system, The NE Quadrant Drainage <br />Project, designed by CGA with hydro-geological services provided by Langan Engineering & Environmental <br />Services became the first project permitted by FDEP with a "pressurized" Class V drainage well system. In <br /> <br />RFQ #11-11-02, Civil Engineering Services to Design Street and Drainage Improvements <br /> <br />Page 211 <br />