Approval and Promulgation of Implementation Plans; Washington: Updates to Incorporation by Reference and Miscellaneous Revisions

The Environmental Protection Agency (EPA) is approving State Implementation Plan revisions submitted by the Washington State Department of Ecology (Ecology) on July 11, 2016. The revisions update the incorporation by reference of federal provisions cited in Ecology's general air quality regulations. The revisions also reflect changes to the primary and secondary National Ambient Air Quality Standards (NAAQS) for ozone, promulgated since Ecology's last update. Ecology also made minor corrections to typographical errors and non-substantive edits for clarity, such as standardizing the citation format.