construction-todayBowers + Kubota’s Work Helps to Protect Honolulu from Sewage Spills

 by Alan Dorich

The island of Oahu, Hawaii, is considered both a paradise for tourists and an environmentally sensitive, pristine environment. “You definitely don’t want to be fouling it up with sewage spills,” Robert J. Kroning says.

Kroning is the Director of the Department of Design and Construction for the City and County of Honolulu (City)on Oahu, which has undertaken multiple projects to avoid such pollution. One of those is the Kaneohe-Kailua Wastewater Conveyance and Treatment Facilities project.

It involves the creation of a tunnel stretching three miles from the Kaneohe Wastewater Pre-Treatment Facility to the Kailua Regional Wastewater Treatment Plant. The finished tunnel will convey wastewater flows between the plants and provide storage to avoid overflows and spills due to wet weather.

While the existing system uses a force main, the new tunnel will be a deep sewer that will convey sewage by gravity. “We believe in the long term that it will be more efficient because there are less mechanical parts that we have to operate,” Kroning says.

Up to Standard
The Kaneohe-Kailua Wastewater Conveyance and Treatment Facilities Project is one of several that will allow…

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