Tampa Bay Water provides wholesale water based upon a Partnership Agreement with the Southwest Florida Water Management District (SWFWMD). This mandate requires that Tampa Bay Water reduce ground water pumping at eleven regional well fields. This is a tremendous challenge due to the rapid population growth in the area, severe drought conditions that began several years ago and tight schedule timeframes.
The Reservoir is an off-stream reservoir that will be used to store excess surface water pumped from the Alafia River and Tampa Bypass Canal Pump Stations for use as a potable water supply. The reservoir will be an earthen structure with an average of 48-foot high embankments and 40 feet of water depth. It will cover an area of 1,200 acres with a volume of 15 billion gallons.
The Challenge:
The purpose of the Reservoir is to store water during the high rivers flow in the rainy season, and to use that water during the dry season, thus the ground water extraction is minimized. Tampa Bay Water's 15 billion gallon, above ground reservoir will supply enough water to the region to sustain its 2 million residents for more than 200 days of drought conditions should they occur. The construction footprint is 1,100 acres which will include the movement of 11 million yards of material, 5 miles of cut off wall (bentonite slurry wall), and a 5-mile long embankment comprised of a geomembrane liner and topped with soil cement. In addition, it will be necessary to enhance approximately 1,024 acres of land and actually creating 450 acres of wetland including the planting of 1.5 million plants, shrubs and trees. When complete, the reservoir will be a one of a kind, state-of-the-art facility for Florida and the largest above ground embankment reservoir in North America. The reservoir is part of a multi-year, $600 million capital improvement plan which will meet the areas water needs through 2015.
The Solution:
ARCADIS planned construction and implemented many value added services to deliver the program in compliance with mandatory permit dates for water use. ARCADIS was able to revise the front-end specifications, in concert with TBW staff and the design firms to include schedule updating, change management and issue resolution. ARCADIS' project control systems also tracked all potential changes and the progress toward implementation. In addition, an executive partnering approach was utilized on a quarterly basis that reinforced resolution of project issues in a timely manner. All change conditions were implemented expeditiously and changes were inserted into the CPM schedule and tracked. As a result, project was completed with no claims and within budget.
ARCADIS provided services for the following:
• Preconstruction planning
• Management administration plan
• Management information systems
• Project file map (Altered for TBW's future file retrievals)
• Constructibility reviews
• Project estimates and cost control
• Prebid CPM schedules and updates throughout construction and startup
• Construction management and administration of contracts
• Project inspections and material testing
• Document control
• Environmental mitigation management and inspection
• Permit tracking
• Public information program and citizen liaison
• Project Startup
• Punchlisting and closeout
