Supplemental Agenda Items - FGUA
Supplemental Agenda Items - FGUA
Supplemental Agenda Items - FGUA
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Key Largo Wastewater Treatment District – Southern Forcemain Project<br />
Project: $3.9 million<br />
Owner: Key Largo Wastewater Treatment District<br />
Owner Contact: Chuck Fishburn, (305) 451-5105<br />
Included the design of collection Basin A by the use of a vacuum sewer collection<br />
system. Basin A consisted of 39,031 linear feet of PVC pipe ranging in size from 4 to<br />
10 inches. Basin A also had a vacuum pump station to serve Basins A and B.<br />
The contractor submitted a proposal to change all the piping within the slip-line portion<br />
of the project to HDPE. To maintain the inside diameter of the design calculations, the<br />
HDPE was upsized by one size over the PVC design. The pipeline size varies from 4 to<br />
18 inches along the U.S. corridor.<br />
The project did contain an innovative design element. An abandoned 30-inch water<br />
main existed within the U.S. 1 corridor. Key Largo was able to obtain the rights to<br />
utilize this pipe as their corridor for the forcemain, therefore no digging was involved in<br />
order to install it.<br />
Since this did not allow for “normal access,” it was decided to use fusible PVC for the<br />
line with the water main.<br />
The line used supports at intervals to keep the new line from rubbing on the old line<br />
much like a bore and jack. It was decided not to grout the line in place, and use the<br />
separation devices instead. The spacers also helped the pull-in process by reducing<br />
friction during installation.<br />
Utilizing the old water main (with the installation of a slip-line pipe) minimized the<br />
impact of construction on traffic within the U.S. 1 corridor.<br />
Key Largo Wastewater Treatment District – Collection System Basin A<br />
Project: $5.1 million<br />
Owner: Key Largo Wastewater Treatment District<br />
Owner Contact: Chuck Fishburn, (305) 451-5105<br />
Included the design of collection Basin A by the use of a vacuum sewer collection<br />
system. Basin A consisted of 39,031 lf of PVC pipe ranging in size from 4 to 10<br />
inches. Basin A also had a vacuum pump station to serve Basins A and B.<br />
CPH provided a preliminary report, which compared the use of gravity collection,<br />
low pressure systems and vacuum systems. The use of a vacuum system was<br />
recommended.<br />
Other items that were discussed included demand and service capability to residential<br />
and commercial areas, and minimizing disruption to the area.<br />
Team Proposal Florida Governmental Utility Authority<br />
57