Challenge
Located in a historic neighborhood of Jacksonville, Florida, the 24 million-gallons-per-day ()mgd Main Street Water Treatment Facility Plant provides water to more than 329,000 customers. In 2012, JEA discovered excessive deterioration at the 100-year-old Orange Street Water Reservoir facility due to elevated levels of hydrogen sulfide (H2S). As with any solution to this facility, contractors needed to have an approach that was both attractive and aesthetically compatible with the historic nature of the neighborhood.
Approach
Based upon their qualifications, project approach, and previous experience with JEA, the Haskell design-build team including Black & Veatch was selected to examine several available treatment options for removing H2S from the raw water. In consultation with the client, the team determined the best solution to be an advanced ozone treatment system with additional finished-water storage capacity for future purposes.
The Haskell team used several strategies to bring the project in on time and within budget, including investigating potential ozone solutions and selecting the most cost-effective one. The team also developed a hybrid foundation system that used new pile foundations in conjunction with existing tank foundations. The Haskell team also reused as much of the existing site as possible, reconfiguring an existing building to house the ozone system and reusing sections of the existing reservoir foundation to support the new concrete tank
Results
Haskell succeeded in providing an optimized ozone solution within JEA’s budgetary constraints of less than $11 million.
“The most critical component of any preconstruction effort is price development. As part of this progressive design-build project the Haskell team has been very responsive in meeting JEA’s budgetary constraints and identifying ways of completing the project within the available budget.”
—Hai Vu, PE, Manager, Water Plants Engineering and Construction
