Structural and Utility Rehabilitation

The Log Cabin Resort is a concession operated resort that includes lodging (rental cabins and motel units), a restaurant, store, RV campground and boat and bike rentals. The resort is located on the north side of Lake Crescent. The National Park Service committed to performing franchise fee funded facility improvements to improve visitor satisfaction. The overall project purpose was to provide a safe, healthy, functional and efficient rental space for guests of Log Cabin Resort consistent with concession goals and objectives for the site as identified in the recently approved 10-year Concession Contract. The project removed 8 existing rustic cabin accommodations, and replaced them with eight new guest cabin structures for visitors and one new facility manager structure. Replacing the deteriorated buildings improves visitor experience, accessibility, safety and resource protection, decrease congestion, and provide an accessible route and pathway throughout the site.

HECO prepared a Title I report and facilitated a mini-CBA to select the preferred alternative. Title II services, HECO designed the eight cabins in a rustic log cabin style including electrical and mechanical systems, parking areas, water services, sewer services and electrical improvements. HECO performed construction management services and produced a as-builts per the Title III task order.

HECO completed Title II Design Development Services for the preferred alternative to replace the existing extended aeration treatment system, selected from the Title I reports and VA workshop, which consists of a recirculating textile filter treatment (Orenco AdvanTex AX-100) sited at the failed mound sand filter with effluent directed to a subsurface drip system disposal. A pre- anoxic tank to provide denitrification for removal of total nitrogen will be included in the design. The selected preferred alternative uses the current septic tank, refurbished lift station, and connective force main piping, which requires further evaluation to determine if any repairs or upgrades are required.

The existing galvanized water line running from the housing area to the existing control building will be replaced to accommodate maximum horizontal separation from sewage piping and will require a secondary containment sleeve if the layout requires the crossing of water and sewer lines. Additional key elements include a new influent flow meter, prefabricated dual-room control building consisting of a soundproof generator room and small laboratory bench with sink, a new generator and fuel storage tank, supplemental alkalinity/carbon feed equipment, and UV disinfection equipment with any required filtration.

Services Provided by HECO Engineers:

• Project Management
• Structural Engineering
• Architectural Engineering
• Civil Engineering
• Electrical Engineering
• SCADA Control/Instrumentation
• Cost Estimating
• Title I Report (Preliminary Engineering)
• Title II Design