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selected projects:

strategic water planning 

Ecological Water Systems for Kapalua Resort
Kapalua, Maui, Hawaii
Kapalua, MAUI

REDI underwent a feasibility study analyzing the costs and return on investment for Kapalua Resorts to implement aquaculture systems within their stormwater ponds at the resort while managing water quality with a floating wetland treatment system.  The project entailed evaluating water flows through the ponds and types and density of aquaculture that would prove beneficial for the resort, an onsite natural systems wastewater treatment system for the clubhouse as well as individual, sustainable onsite wastewater systems for the mauka cabins.

Integrative Agriculture Development, Malama Kaua’i
Kilauea, Kauai, Hawaii
Kilauea, KAUAI

In partnership with Todd Ecological, REDI led the design to compile a 21st-century sustainable agricultural development master plan and feasibility study for the Malama Kaua’i Farm site. Malama Kaua’i was intended to be the world’s first think-tank/do-tank within the context of Hawaiian ecosystems and its cultures. The study investigated integrative agriculture strategies and techniques that blended the traditional farming practice into a modern-day context. The Study included in the following:


  • Building productive soils

  • Vermiculture & Compost teas

  • Building mycelium networks for soils development and water conservation

  • Aquaculture with native Hawaiian fish -Educational opportunities

Windward Mall Site Water Audit
Kaneohe, Oahu, Hawaii
Windward mall

In collaboration with KYA Design Group, REDI underwent a site water audit of the 22-acre Windward Mall site and facilities.  It included auditing their water bills and determining opportunities for water conservation that provided optimal return on investment.  Opportunities were investigated by undergoing a site water balance, which included a hydrological analysis to capture stormwater for nonpotable water use for irrigation and supply makeup water for the buildings cooling tower. 

Low Impact Development (LID) Guide for the West Maui Hotel and Hospitality Industry
Hawaii - Statewide

REDI is the co-author to the Low Impact Development (LID) Guide for the Hawaii Hotel Industry published by the Coral Reef Alliance, to support the development and permitting of green water infrastructure practices.  The overall goal was to provide an easy to follow educational framework for the industry to implement sustainable strategies for managing stormwater onsite that protect coastal water quality. 


Wahiawa, Oahu, Hawaii

REDI underwent water infrastructure and agricultural planning for the Office of Hawaiian Affairs’s (OHA) 511-acre agricultural site surrounding the Kukaniloko birthing stones. REDI evaluated the feasibility of connecting to recycled water supplies as well as underwent a hydrological analysis of the property, stimulating various rain events and runoff scenarios based on types of crops and soil health to store stormwater onsite in ponds to use as irrigation water. Costs to install the conveyance and ponds systems were compared to installing an onsite well and their associated life-cycle costs. REDI’s agricultural planning included methods to restore soil health and other regenerative agricultural practices and policies OHA could consider in their Master Planning efforts for the property.  The overall goal was to demonstrate 21st-century best-in-class sustainability practices that would be regenerative by design, protect the archaeological and cultural assets of the site and enhance the livelihoods of the community.

EPA Greening America’s Communities 
Honolulu, Oahu, Hawaii

In partnership with Community, Design and Architecture, REDI is working under the EPA’s Greening America’s Communities program to provide climate change adaption strategies and green infrastructure planning for four City and County of Honolulu Transit Oriented Development (TOD) sites located in Iwilei and Kapālama.   

REDI’s work included site analysis using geographic information systems, providing climate change adaption strategies and conceptual green infrastructure planning and economic analysis for future building developments to move towards a decentralized water infrastructure model for new development along the TOD.  Along with developing reports, REDI helped lead community and stakeholder meetings, provided renderings and infographics to visually display data results.  Reports produced as part of the planning process were provided to the city and county of Honolulu and will be published by the EPA to be available nation-wide as resources for other communities.

Frey Vineyards 
Mendocino, California

​REDI provided a feasibility study to assist Frey Vineyards to upgrade their existing wastewater system that receives washwater and byproducts from the wine processing process.  Solutions included strategies for the vineyards to reuse the treated water on their vineyards.

Kamehameha Schools (KS) Site Water Assessment  
Island-wide, Hawaii
Kamehameha Sch

REDI performed site water assessments to identify opportunities for KS to achieve water conservation, reuse and/or recharge goals  This included calculations for potential (potable) water-saving, stormwater runoff reductions, and economic evaluation to determine which opportunities offered a return on investment or met educational goals.  The site water assessments were performed for KS Priority 1 sites which included their headquarters at Kawaihao Plaza as well as the (4) main school campuses located on Oahu, Maui and Hawaii islands and for KS Priority 2 sites which included Keauhou Shopping Center and Kahalu`u Ma Kai located on the Hawaii island.  As part of the assessment, REDI trained Kupu interns to collect data points using the Follow the Drop mobile application and data was analyzed using modeling as well as geographic information system tools to identify retrofits or operational opportunities that could have the most impact on water savings or stormwater reduction for each of the properties.  Data results were then summarized on maps and into infographics to accompany the reports.

University of Hawaii West Oahu Creative Media Building 
Kapolei, Oahu, Hawai
UHWO Creative Media Bldg

In partnership with KYA Group, REDI served on the UHWO owner’s representative team to develop a request for proposal (RFP) for the design-build of the new UHWO Creative Media Building. REDI provided sustainable site design consulting services that included site analysis, initial water balance, and a conceptual water portfolio to demonstrate various water strategies the development could undertake along with projected costs to install.

Kona Brewery
Kailua-Kona, Hawaii
Kona Brewery

REDI provided Low Impact Design planning services for the new Kona Brewery to be located in Kailua-Kona. Planning services included hydrological analysis and evaluation of several best management practices to consider including pervious pavement, bioretention and rainwater catchment for the development to meet pre-development stormwater conditions. The assessment also included a cost analysis and conceptual site planning for the systems.

Waipa Watershed
Waipa, Kauai

REDI provided an agricultural-watershed plan for the Waipa Foundation that incorporated ecological technologies to manage the water within their property from mauka to makai.  In addition products such as local mushrooms and aquaculture were analyzed for their feasibility as economic byproducts. 

Ma’alaea Banyons Condominium
Ma’alaea, Maui, Hawaii

REDI underwent a wastewater treatment and reuse feasibility study for the 78 unit condominium complex. REDI evaluated multiple technologies for their feasibility for treating the wastewater onsite, including both a capital and life cycle cost-benefit analysis comparing MBR, MBBR and natural systems technologies.  In addition, a water reuse plan and a cost-benefit analysis were provided.  

Kapolei II Elementary School
Kapolei, Oahu, Hawaii
Kapolei II

In collaboration with KYA Design Group, REDI provided a Water Reuse Plan for the new Kapolei II Elementary School.  The Water Reuse Plan would allow the campus to use up to 40,000 gpd of R-1 reclaimed water supplied by the Honolulu Board of Water Supply. 

Kilauea Lighthouse Village
Kilauea, Kauai, Hawaii

REDI underwent an onsite wastewater treatment feasibility study for Hunt Development Group's new Kilauea Lighthouse Village, a mixed-use commercial development located in the center of Kilauea town on the north shore of Kauai with an estimated volume of approximately 30,000 gallons per day.  REDI and its teaming partner Biohabitats evaluated onsite wastewater packaged treatment systems along with natural systems technologies and included both capital and lifecycle cost comparisons.

Maui Land and Pineapple
Kapalua, Maui, Hawaii
Pineapple Kapalua

REDI underwent a feasibility study for Maui Land and Pineapple to undergo cost-benefit analysis and conceptual design to covert large (10+ acre) storage water ponds that feed irrigation to the thousands of acres of pineapple, into an extensive aquaculture facility, whereby an additional product (fish) could be harvested and sold and also have potential cost savings to use the fish water fertilizer for the pineapple crops. 

Mauna Kea Resort
Kona, Hawaii
Mauna Kea Resort

In partnership with the Nature Conservancy, REDI provided a water audit for the resort that included evaluating irrigation, plant palettes, use of recycled water and stormwater management.  The overarching goals were to improve water conservation and reduce nutrient migration into the nearshore waters while providing a return on investment for the resort.   

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