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Project Role

Project Role. The Consultant acted as Engineer of Record and provided full design services, including :. Hydraulics Process piping Structural Electrical Site/civil Permitting. Alternatives analysis Corrosion study Regulatory negotiations assistance Construction administration

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Project Role

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  1. Project Role The Consultant acted as Engineer of Record and provided full design services, including: • Hydraulics • Process piping • Structural • Electrical • Site/civil • Permitting • Alternatives analysis • Corrosion study • Regulatory negotiations assistance • Construction administration • Community outreach • Facility condition analysis

  2. Project History • FGUA purchased the Seven Springs Utility System in March 2009. The water system had a long history of water quality issues, including black water with a sulfurous odor. • FGUA made a commitment to the residents to provide clean drinking water by August 2011. Planning, Start-Up, and/or Construction Photo 1 – Hydrant flowing with black water prior to the Mitchell WTP Improvements project.

  3. Regulatory History • In addition to water quality issues, the Seven Springs water system had been out of compliance with the Southwest Florida Water Management District (SWFWMD) for withdrawing groundwater that exceeded the permitted quantity. The excessive groundwater pumping was ongoing for nearly 20 years. • FGUA entered into an agreement with SWFWMD to restore the system to permitted levels by August 2011.

  4. Project Description • The original Seven Springs water system included eight individual water treatment plants that included a water supply well, chlorine injection, and a hydropneumatic tank. Planning, Start-Up, and/or Construction Photo 2 – One of the original Seven Springs water treatment plants. • Hydrogen sulfide levels were elevated enough to require high level treatment that was too costly to place at each well site.

  5. Project Description An alternatives analysis revealed that the most economical and sustainable solution would be converting the existing WTPs to raw water wells and constructing a centralized treatment plant.

  6. Project Description Due to its location and existing infrastructure, the Mitchell storage and repumping facility was selected as the location for the new Mitchell Water Treatment Plant. Planning, Start-Up, and/or Construction Photo 3 – Original Mitchell storage and repumping facility. Completed Project Photo 1 – Mitchell Water Treatment Plant.

  7. Project Design To address water quality issues, including high hydrogen sulfide, iron, and solids levels, the following technologies were selected for treatment: • Forced draft aeration with two-stage chemical odor control (selected due to proximity of residential neighbors) • Sand pressure filters • Chloramine disinfection (selected to reduce disinfection byproducts and to match Pasco County’s disinfection method) Completed Project Photo 2 – Mitchell WTP filters and aerator.

  8. Project Coordination • The Mitchell WTP Improvements project included construction of nearly sevenmiles of raw water main to transmit water from the wells to the new treatment plant. In addition five interconnections with the adjacent Pasco County potable water system were constructed to supplement water from the Mitchell WTP. • In order to accomplish this work within the timeline promised to the residents and mandated by SWFWMD, the project was completed under four simultaneous contracts.

  9. Project Construction Raw Water Main Project, Phase 1 Raw Water Main Project, Phase 2 Planning, Start-Up, and/or Construction Photos 4-7 – Construction of the four simultaneous projects associated with the Mitchell WTP improvements. Mitchell WTP Improvements Project FGUA-Pasco County Interconnect Project

  10. Project Budget & Schedule The project was completed on time and nearly $2 million under budget. Completed Project Photo 3 – Mitchell WTP.

  11. Community Involvement • FGUA and the Consultant’s staff met with a vocal group of residents from the community on a monthly basis through design and construction of the water system improvements. • Including the residents in the design and alternatives analysis greatly improved the relationship with customers who had been suffering with poor water quality and a non-responsive owner for several years.

  12. Project Value to Community The lessons FGUA and the Consultant learned by involving the community in the project will provide future value to both parties. “The FGUA team has done an outstanding job of keeping us informed, and their responsiveness to customers has been excellent. Residents don’t like the higher rates, but we used to get rate increases…with no improvements in the water.”  ~ John Andrews, Seven Springs customer

  13. Project Result Completed Project Photo 4 – Water flowing from the same hydrant in the Seven Springs water system before and after the Mitchell WTP Improvements project.

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