FORD ISLAND WATERLINE REPLACEMENT

SUMMARY AND LAYMAN'S DESCRIPTION

A new 24-inch (ID) high-density polyethylene water main was installed beneath Pearl Harbor utilizing an innovative directional drilling and underwater splicing procedure that has greatly improved the performance and reliability of the Navy's water distribution system. The applied method avoided environmental disturbances associated with conventional underwater pipe laying operations.

BACKGROUND

The primary water transmission main that serves Ford Island and the Pearl Harbor Naval Complex is over 75 years old. Failure of this primary line exposes the existing and proposed developments on Ford Island and potentially the Pearl Harbor Naval Shipyard to extended water supply outages and possible interruption or impairment of essential activities within the Naval Complex. A new replacement line was programmed and installed as part of this project to improve the reliability of the water system serving Pearl Harbor. Fukunaga & Associates, Inc. was selected by the Naval Facilities Engineering Command Pacific (NAVFAC Pacific) to provide engineering services to design the new replacement waterline.

CONSULTANTS' ROLE IN THE PROJECT

Fukunaga & Associates, Inc. (FAINC) served as the prime engineering consultant for the project, as well as the civil design engineer. As the prime consultant, FAINC handled all project management responsibility and coordination with the client (NAVFAC Pacific) and the water system owner (NAVFAC, Hawaii). Subconsultants for the project included: URS Corporation of Honolulu— geotechnical engineers and HDD consultant, MK Engineers, Ltd.—Electrical Engineers, and SLSH, Inc.— Structural Engineers.

The design process for this project included a Functional Analysis Concept Development (FACD) study that brought together all stakeholders associated with the project. Participants included the project owner – NAVFAC, Hawaii; the client - NAVFAC Pacific; and the design team. The FACD effort defined the project scope, and emphasized the need for a commitment from all participants to work together towards a successful project, meeting the owner/client objectives and keeping within the available funding and project schedule. The commitment was formalized in a Partnering Agreement that documented the project scope and basis of design. The Agreement was signed by representatives of the Owner, Client and Fukunaga & Associates, Inc.—the prime consultant for the design team. This spirit of partnership and commitment carried throughout the project development and implementation, resulting in a final product that met the owner’s objectives and exceeded the expectations of improved system performance.

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