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Polk County Groundwater Recharge Investigation

Jones Edmunds conducted a Groundwater Recharge Investigation with Polk County Ut...

Polk County Groundwater Recharge Investigation

Jones Edmunds conducted a Groundwater Recharge Investigation with Polk County Utilities in the County’s Northeast Regional Utilities Service Area (NERUSA). The project was cooperatively funded by the County and SWFWMD and examined the benefits of using reuse water to indirectly recharge the Floridan Aquifer via rapid infiltration basins (RIBs). Jones Edmunds conducted extensive desktop and field investigations and developed a subregional groundwater model to better evaluate the effects of recharging the Surficial Aquifer System (SAS) and Upper Florida Aquifer (UFA) and to quantify the additional groundwater that could be available as a result of beneficial recharge of the aquifer system. As a result of this project, the County should have an option for offsetting the potential impact of future groundwater withdrawals and be able to beneficially use 100% of its reclaimed water flows while providing opportunities for developing additional water supplies in an area where water supply options are limited. The first phase included the preliminary assessment of two sites that included compiling and reviewing available regional and local hydrologic and hydrogeologic information and developing a preliminary groundwater model. The suitability of two sites for aquifer recharge was also investigated. Building on the Preliminary Site Assessment, Jones Edmunds prepared a Detailed Field Investigation Plan that provided guidelines for testing objectives; proposed locations for additional monitoring wells and boring logs; and developed data collection plans, aquifer performance testing (APT) procedures, multi‐electrode electrical resistivity (MER) survey, and load‐testing procedures used in the Detailed Site Assessment.

City of Bradenton Aquifer Storage and Recovery Well

The Bill Evers Reservoir and associated surface water withdrawal has been succes...

City of Bradenton Aquifer Storage and Recovery Well

The Bill Evers Reservoir and associated surface water withdrawal has been successfully serving water to the City of Bradenton since 1948. Jones Edmunds has been working under a master contract with the City of Bradenton since 1948 (through our acquisition of Smith and Gillespie – current contract modified in 1971) and has been responsible for nearly every phase of its design since its inception. More recently, we designed the expansion of the reservoir and 8-MGD surface water treatment plant. Previously, we rerated the permitted capacity of the plant, increasing it 50% to 12 MGD. In part due to MFL constraints of the Braden River, alternatives to the existing supply of the reservoir needed to be evaluated. Part of the solution involves the completed design and future construction of an upland off-stream storage facility adjacent to the City’s water supply reservoir to capture excess flow from the Braden River during the wet season’s high flow periods. Additionally, and as a more cost-effective alternative to the reservoir expansion, we provided design and construction services for an ASR well. Analysis of the City’s current water supply capacity provided by the reservoir, augmentation well, and recently constructed potable water ASR well and projection of the City’s needs through 2025 show that an additional 2.6 MGD of raw water supply and storage will be needed to carry the City through projected drought periods. To help mitigate saltwater intrusion, the City has been working closely with the FDEP Underground Injection Control (UIC) group and the Southwest Florida Water Management District (SWFWMD) to permit and cooperatively fund a reclaimed AR well that will allow the recharge of excess reclaimed water during the wet season to the benefit the Southern Water Use Caution Area (SWUCA) Recovery Strategy and Most Impacted Area (MIA). SWFWMD’s goal is to recharge excess freshwater and raise the groundwater level to 13.1 feet to mitigate salt-water intrusion. The City, FDEP, and SWFWMD have worked together to develop an effective water management strategy to meet short- and long-term water needs of the community and the environment.

SWFWMD Flatford Swamp Feasibility Analysis

Flatford Swamp is a forested wetland in east Manatee County that has received ex...

SWFWMD Flatford Swamp Feasibility Analysis

Flatford Swamp is a forested wetland in east Manatee County that has received excess water during the dry season due to nearby agricultural practices. This has resulted in significant tree mortality and encroachment of several invasive herbaceous and shrub species. The goal of this project is to evaluate the feasibility of using recharge wells to restore the hydrologic period and at the same time use the water to recharge the Most Impacted Area (MIA) of the Upper Floridan Aquifer (UFA). Jones Edmunds, with ASRus as a subconsultant, completed a conceptual design of a surface water recharge project. The project evaluated the feasibility of using recharge wells to restore the hydrologic period and use the water to recharge the MIA of the UFA. The Jones Edmunds and ASRus team evaluated recharging potential flows of 30 MGD. As part of the project, the team obtained a construction and testing permit for an Exploratory Class V, Group 2 Exploratory Aquifer Recharge well through FDEP’s UIC Department. The proposed target recharge zone is the Avon Park High Permeability Zone, which is expected to be within the Underground Source of Drinking Water. The permit includes a Zone of Discharge condition to allow the injected water to equilibrate to concentrations below the drinking water standards before leaving the site.

Hydrogeology

Our hydrogeological services help the communities we serve safeguard public drinking water systems and public health, keep our clients in compliance with permits, and find sustainable water supplies for the future. We work with you to evaluate water supply options and find economic solutions for water supply and beneficial reuse. We use our groundwater modeling expertise to support the permitting process and explore alternative water supply options. Our hydrogeology services include:

  • Hydrogeological Investigations
  • Groundwater Modeling
  • Well Design and Testing
  • Aquifer Storage and Recovery
  • Groundwater Recharge
  • Deep Well Injection and UIC Permitting
  • Water/Consumptive Use Permitting
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