Putnam County East Putnam Regional Water System (EPRWS)

Jones Edmunds provided all planning, design, and permitting for a new regional water system. Eight permits were secured for this project. The water treatment plant (WTP) is a 1.0-MGD reverse osmosis treatment facility expandable to 4.0 MGD. The water supply is from groundwater wells, and the treatment process includes cartridge filtration, reverse-osmosis membrane filtration, degasification towers, and odor-control facilities. Chemicals being stored and used in the treatment process include scale inhibitor, sodium hypochlorite, sulfuric acid, sodium hydroxide, and fluoride. A 250,000-gallon ground storage tank, a 6.0-MGD high-service pump station, and a 100,000-gallon elevated storage tank were constructed as part of the project. The concentrate water from the reverse osmosis WTP is reintroduced in to the St. Johns River via an underwater diffuser system.Jones Edmunds also designed and provided construction administration for approximately 27 miles of transmission and distribution piping ranging in size from 6 inches to 24 inches in diameter. The service meters range in size from _ inch to 4 inches in diameter. Approximately 820 services and 125 fire hydrants were constructed.The funding package associated with this project included a grant/loan from U.S. Department of Agriculture – Rural Development, state legislative appropriations, an Alternative Water Supply grant from St. Johns River Water Management District (SJRWMD), a Florida Department of Environmental Protection (FDEP) State Revolving Fund loan, and a US Environmental Protection Agency grant.

Jones Edmunds provided comprehensive construction-phase services for this project, which included coordinating the execution of the Owner-Contractor contract and delivery to the contracting parties and the funding agencies. Jones Edmunds also worked with the Contractor during the construction phase to observe that the project was constructed in accordance with the intent of the contract documents.

Jones Edmunds staff reviewed and tracked shop drawings, responded to requests for information, held weekly and monthly site meetings, observed the work, prepared daily progress reports, responded to the Contractor’s written correspondence, processed monthly pay requests, coordinated with funding agencies, negotiated change orders, and performed other duties as required to ensure a successful construction project.

In addition, Jones Edmunds assessed petroleum contamination discovered during excavation of a stormwater pond at the Putnam County Public Works Facility. We determined that the contamination was the result of improper handling of materials and wastes at an asphalt plant formerly located at the site. Contaminants at the site were a commingled plume of diesel fuel and asphalt.

Jones Edmunds staff used a variety of techniques, including direct-push sampling methods, to rapidly characterize the extent of the contamination. We then planned dewatering, treatment of the extracted water, and excavation of the contaminated source materials). We provided construction-observation services during the excavation of more than 6,000 cubic yards of soil that were disposed of in the County landfill. Negotiations with SJRWMD and FDEP were required to modify the Environmental Resource Permit and Consumptive Use Permit for the facility under construction. We coordinated closely with the agencies throughout the assessment and remediation process to minimize disruption to the construction schedule.

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