Force Main Improvements Study, (Kaneohe, Kailua, Halawa)
Oahu, Hawaii
Dept. of Design & Construction

Coconut Island Improvements
Kaneohe, Hawaii
Research Corp. of the University of Hawaii

1.0 MG Reservoir & Offsite Water Line
Lalamilo, Hawaii
Dept. of Hawaiian Home Lands

East Kapolei II Offsite Trunk Sewer
Kapolei, Hawaii
Dept. of Hawaiian Home Lands

Pearl City Wastewater Pump Station Capacity Study
Pearl City, Hawaii
Waiawa Ridge Development LLC

Sewer Alignment Study
Kapolei, Hawaii
Kapolei Property Development

4.0 MG 215’ Reservoir & Transmission Main
Kapolei, Hawaii
Dept. of Hawaiian Home Lands

Kahuku Elderly Housing Sewer Improvements
Kahuku, Hawaii
National Mortgage Corporation
c/o Kahuku Housing Foundation

Kapolei Interceptor Sewer
Kapolei, Hawaii
Aina Nui Corporation

Ewa Shaft Granular Activated Carbon Treatment Facility
Kapolei, Hawaii
Honolulu Board of Water Supply
(subcontractor to Okahara & Associates)

Kapahulu Water System Improvements, Part I
Kapahulu, Hawaii
Honolulu Board of Water Supply

Kapahulu Water System Improvements, Part III
Kapahulu, Hawaii
Honolulu Board of Water Supply

Waimanalo Wastewater Treatment Plant Upgrades
Waimanalo, Hawaii
Dept. of Land & Natural Resources
(subcontractor to Environet, Inc.)

Farrington Highway 24” Water Main, Part II, Ph. B
Nanakuli, Hawaii
Honolulu Board of Water Supply

Ewa & Barber’s Point Golf Course Reuse Water System
Ewa, Hawaii
U.S. Filter

Farrington Highway 24” & 12” Water Main, Part I, Phase B
Nanakuli, Hawaii
Honolulu Board of Water Supply

Kapahulu Water System Improvements, Part II
Kapahulu, Hawaii
Honolulu Board of Water Supply

Honouliuli Reuse Water Transmission Main
Ewa, Hawaii
U.S. Filter

Awamoi Street Sewer Improvements
Waipahu, Hawaii
RYM Waipahu Venture

Farrington Highway 24” & 30” Water Main
Kalaeloa to Ko`Olina
Honolulu Board of Water Supply

Makaha Water System
Makaha, Hawaii
Honolulu Board of Water Supply

Kamehameha Highway 36” Water Main
Punaluu, Hawaii
Honolulu Board of Water Supply

City and County of Honolulu
Honolulu, Oahu, Hawaii

CP&E has been contracted by the City and County of Honolulu to assess the condition of the Kailua Road, Kaneohe Bay #3 and Halawa force mains. All three force mains were installed in the late 1960’s and are listed in the 2010 Consent Decree. This project consists of evaluating the physical condition of the force main by surface, external and internal inspection. A work plan will be prepared to outline the assessment methods. Field work will consist of exposing buried sections of the pipe and testing a cut-out section for strength and corrosion. Results will be summarized in a final report and submitted to EPA for approval.

USACE, Honolulu District
Sandwich Isles Communication Field Site, Waipio Acres, Oahu, Hawaii

CP&E, as a subcontractor to GSI Pacific Inc., was contracted to design all aspects of the Air Stripping System to remove 99% of the Trichloroethylene (TCE) in the drinking water well.  Design was for treatment of an average of 1 million gallons per day.  In general, water treatment components consisted of two air stripping towers, well pump, granular activated carbon (GAC) vessel for air scrubbing, 50,000-gallon water storage tank, 5,000-gallon intermediate raw water tank and pumps, control building, and miscellaneous site improvements.

City and County of Honolulu
Honolulu, Oahu, Hawaii

CP&E, as a subcontractor to CH2MHill, was selected by the City and County of Honolulu to execute a design/build permanent replacement of the Niu Valley Wastewater Pump Station Force Main. The project consisted of directional drilling of a new replacement force main, installation of valve vaults and connections to the existing system, paving as needed, removal of the existing temporary pipeline, remediation of the existing median, and startup.