State boards · The Environmental Notice · June 23, 2026

Project Name: Culvert Replacement and Bank Stabilization at Helemano Stream, Oʻahu

Federal consistency review

Location, as printed

64-486 Kamehameha Highway, Haleʻiwa, Oahu

Tax map key, as printed

(1) 6-4-001:014

Applicant, as printed

Pomaikaʻi Partners, LLC (Laukihaʻa Farms)

Comments due

July 7, 2026 (passed)

Area

North Shore (placed by the tax map key it prints)

The state's document

The Environmental Notice, June 23, 2026 (PDF)

Pomaikaʻi Partners, LLC (Laukihaʻa Farms) proposes to replace an existing damaged and hydraulically undersized stream crossing within the Helemano Stream corridor in Haleʻiwa, Oʻahu. The existing crossing consists of a low-profile concrete slab culvert that has experienced periodic overtopping, scour, erosion, and structural deterioration during major storm events. The proposed replacement crossing consists of a new open-bottom arch culvert designed to improve hydraulic performance while maintaining a more natural streambed beneath the crossing. The proposed culvert will be approximately 15.5 feet wide with an approximate rise of 8 feet. The open-bottom design is intended to improve stream connectivity, reduce the potential for long- term scour and erosion potential, and enhance overall stream habitat conditions. Project activities will include removal of the existing crossing, temporary stream diversion during construction, excavation and grading, installation of the new culvert structure, roadway tie-ins, streambank stabilization, scour protection, implementation of erosion and sediment control measures, and final site restoration.

Basis. Read from the issue's PDF by script (pipeline/fetch_environmental_notice.py), published by the State of Hawaiʻi Office of Planning and Sustainable Development; first on the record Sept. 19, 2026. Wording is the notice's; contact names, telephone numbers and email addresses are not carried. Corrections: the corrections log.