Data centers in Walla Walla County

The Port of Walla Walla agreed in late 2024 to sell more than 550 acres in the Wallula Gap Business Park, about 10 miles east of Pasco, to a then unnamed developer called Advance Phase LLC, later confirmed to be Amazon Data Services, for a roughly 4.8 to 5 billion dollar cluster of up to 16 data center buildings totaling more than 3.4 million square feet. Walla Walla County's 30 day public comment period on whether the first phase, three roughly 215,000 square foot buildings, needs a full environmental impact statement closed October 12, 2026 with more than 700 comments submitted, many from Earthjustice and other critics disputing the county's no-EIS determination, while county commissioners said on September 14, 2026 they would not pursue a countywide moratorium. The county must now issue a SEPA threshold determination and will open a further comment period once that decision is made; opponents continue to cite Amazon's 20.5 million dollar settlement earlier in 2026 over nitrate groundwater contamination tied to its Oregon data centers, and hundreds of protesters have turned out across the state calling for a statewide moratorium.