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FY01 MCON Project P-491,
Sewer Force Main - Ford Island to Pearl Harbor Naval Shipyard
PROJECT DESCRIPTION
A key prerequisite for the Navyfs vision to develop Ford Island into a hub of commercial,
residential and support activities within Pearl Harbor is the upgrade of the Islandfs aging
utility infrastructure. FY01 MCON Project P-491, Sewage Force Main, Ford Island to Pearl
Harbor Naval Shipyard is the first of several infrastructure projects initiated by the Navy
aimed to provide vital support of the proposed Ford Island development. The project, including
a new force main and renovated pumping station, will provide the necessary wastewater
transmission capacity needed to meet the anticipated increase in wastewater flows.
The new force main will serve as the primary sewage conveyance route from the island,
while the existing main will serve as a backup in the event of pipeline failure, or when system
maintenance is required.
Most of the sewage force main was installed using horizontal directional drilling (HDD), a
gtrenchlessh construction method involving precision drilling, reaming and pulling of the
pipeline through a predetermined alignment. HDD was the most appropriate method for
the installation of the pipeline across the Main Channel in Pearl Harbor where conventional
underwater pipelaying would cause disruption of harbor operations and potential adverse
environmental impacts by disturbing the Harborfs bottom sediment, suspected of containing
toxic material. HDD was also used on Ford Island to avoid disturbing historically significant
sites from the December 7, 1941 attack, and through the Shipyard area where numerous
utility and structural obstacles were present.
BACKGROUND
With completion of the Admiral Clarey Bridge in 1998, the U.S. Navy's Ford
Island became readily accessible to visitors and future development. Later
that year, the decommissioned battleship USS Missouri was permanently
berthed at Ford Island, and officially opened as a memorial and museum
honoring servicemen who fought for our country during World War II. These
significant milestones are part of the Navy's vision of developing Ford Island
into a vibrant operations center, supplemental housing area and visitor/
commercial attraction in Pearl Harbor. Along with the proposed growth, however,
are the increased demands on the island's utility infrastructure.
The Navy initiated several key infrastructure projects to provide vital support to the Ford
Island Development. The first project is FY01 MCON Project P-491, Sewer Force
Main, Ford Island to Pearl Harbor Naval Shipyard, and provides additional, "failsafe"
wastewater transmission capacity with installation of over 6000 ft of 20-inch
(OD) high-density polyethylene (HDPE) pipe. The project also include renovation
of the main Ford Island wastewater pump station with installation of pumps capable
of handling future demands.
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