The Gateway incorporates numerous strategies for resource conservation. Ninety-five percent of the McDowell gateway’s 24-inch-thick rammed earth walls consist of soil salvaged from the site, combined with 5 percent Portland
cement. An 18 KW solar system generates as much solar electricity as the Gateway consumes to realize a ‘net zero’ of energy consumption. Up to 50,000 gallons of rainwater is harvested through roof collection and storage in an underground cistern–providing 100% of the water needed for landscape irrigation.
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