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Jacobs and C&ES Consultants, Inc. were selected to design a new water treatment plant in the Nassau County area. The plant was designed in two phases. The first phase included a 3.6 MGD water treatment plant with a new well and a sodium hypochlorite disinfection unit. Phase II will increase the plant to 7 MGD. The site of the water treatment plant was approximately 15 acres of undeveloped land. The water treatment plant required 3.8 acres of the total 15 acres. There was also a large wetland within the property.
C&ES was the civil engineer on the team led by Jacobs, and contracted by the JEA to provide a complete design for a new water treatment plant. C&ES staff was tasked with the development of the following components of this design:
One of the more complicated aspects of this project was the wetland found within the property. Routing storm water within a limited space and protecting the wetland created challenges, but with diligent work and constant communication between C&ES, Jacobs, JEA and Florida DEP, we were been able to resolve the storm-water routing issues.
C&ES has an excellent working relationship with Jacobs, and the success of C&ES can be attributed to the level of attention and responsiveness placed on all of our projects.
Referred to as the River Crossing Project, Segment 2 was a Design Build project led by The Haskell Company. Responsibilities assigned to C&ES Consultants included Maintenance of Traffic (MOT), Permitting and Community Outreach support. The key engineering features of this project were the horizontal directional drill (HDD) under the St. Johns River and its 36” steel pipe length of 6,700 feet, welded above grade into one continuous pipe prior to installation (pulling).
Working with the design build team’s HDD specialty contractor, Michels, one of the critical elements to the success of the HDD was the positioning of the pipe prior to it being pulled under the river. The ideal pipe alignment was straight (minimal horizontal and vertical bends) and in-line with the pre-drilled hole under the river. It was concluded that the optimum location was the shoulder of the east bound lanes of the Arlington Expressway, US Alt 90. The MOT Plans were designed to facilitate this location and alignment.
The 36” steel pipe was delivered to the site in 40’ lengths and to initiate the pipe welding and assembly, three grassed areas between the Arlington Expressway and its Service Road were cordoned off with temporary precast barrier wall on the expressway (high speed) side and drums on the service road (low speed) side to provide a safe working area for a period of 70 days while the pipe was welded into 7 sections or strings ranging in length from 700’ to 1,200’. Just prior to starting the pipe pull under the St. Johns River, the pipe strings were moved to the shoulder of the Arlington Expressway where they were welded into the one continuous piece. This operation required the closing of one lane of the expressway and a major detour for afternoon commuters via the Hart Bridge. Preparation of the River Crossing MOT Plans was carefully coordinated with the FDOT’s closing of the Mathews Bridge for structural repairs to minimize overall disruptions to traffic.
C&ES was a member of the design/build team working for the City of Jacksonville to construct the new Duval County Unified Courthouse. The facility replaces the 50-year old courthouse on East Bay Street.
C&ES was a subcontractor to Turner Construction Company providing preconstruction, cost estimating and construction administration services. The project broke ground Winter 2009, with substantial completion occurring the Summer 2012.
During construction, C&ES provided field inspection and monitoring services for all construction related activities through project close-out. Support personnel included project superintendents, inspectors, project engineers, quality control technicians, cost estimators and administrative support staff. C&ES also assisted with sub-contractor coordination and the onsite security and registration of all project personnel and visitors.
In addition to construction administration, C&ES collaborated with Turner to develop the project specific safety program in compliance with OSHA requirements and provided cost estimating services for assigned costs and project expenses.
Project New Ground, is a long-term effort to make Jacksonville a cleaner, greener city. Its goal is to correct a situation that began nearly 100 years ago, when the City of Jacksonville burned its solid waste in incinerators. Ash from those incinerators was created and/or deposited at four sites north and west of the downtown area. Project New Ground is the city’s program to remove the ash from those sites.
C&ES personnel for Project New Ground. Personnel descriptions include the Project Professional Engineer, the Project Site Engineer, the Public Information Coordinator (PlC), and Site Administrative/Clerical Support. All C&ES personnel for Project New Ground will be Jacksonville area residents. C&ES also provided equipment operating and general labor personnel for Project New Ground.
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