Oregon environmental regulators gave a key stamp of approval to a proposed $2.5 billion biofuel refinery along the Columbia River despite continued opposition from environmental groups and tribes over potential impacts to the river and salmon. The NEXT Energy refinery, also known as NXTClean Fuels, plans to manufacture renewable diesel and sustainable aviation fuel at the deepwater port of Port Westward. …Environmental groups this week said state regulators “caved in” to pressure from the building trades, putting the river and people’s well-being at risk from possible spills. …The company is also developing a second biofuel refinery in Lakeview, 100 miles east of Klamath Falls, after acquiring an existing never-opened facility in 2023 from Red Rock Biofuels. The Lakeview plant will use wood waste from local forest thinning, logging and wildfire management activities to make renewable natural gas, known as RNG. The company has yet to announce when the plant will launch.