Ecology proposes to amend Boeing's Prevention of Significant Deterioration (PSD) permit. The permit would allow Boeing to make changes that are different from the original 777x project approval. The proposed changes will not increase volatile organic compound (VOC) emissions from the 777x project.
Documents for review (scroll to "Draft PSD permits and public comments")
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A Prevention of Significant Deterioration (PSD) permit applies to new, large facilities or major changes at existing large facilities that could increase air pollution in an area that meets air quality standards. The intent is to prevent that area's air quality from getting worse. We issue these permits, except for projects that are regulated by the Energy Facility Site Evaluation Council (EFSEC), EPA, or tribes.