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Intalco Sulfur Dioxide Attainment Plan

Publication number Date Published
22-02-035September 2022
VIEW NOW Intalco Sulfur Dioxide Attainment Plan (Number of pages: 111) (Publication Size: 3590KB)

Appendix A: Whatcom County SO2 Area Designation
(88 pages) (4MB)

Appendix B: SO2 Source Categories for the Emission
(1 pages) (77KB)

Appendix C: Intalco SO2 Attainment Plan Modeling Report
(43 pages) (2MB)

Appendix D: Intalco SO2 Agreed Order 21310
(15 pages) (634KB)

Appendix E: EPA EJ Screen Reports for the Intalco SO2 Nonattainment Area and Whatcom County
(8 pages) (3MB)

Appendix F: Copies of Public Notices
(54 pages) (3MB)

Appendix G: Response to Comments
(35 pages) (577KB)

Appendix H: Adoption Order and Transmittal Letter to EPA
(4 pages) (685KB)

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Author(s) Anya Caudill
Description Effective April 30, 2021, the U.S. Environmental Protection Agency designated a small area in the northwest corner of Washington State as a nonattainment area for the 2010 sulfur dioxide National Ambient Air Quality Standard. “Nonattainment” means not meeting or complying with the standard. The designated area is a 4.5-square-mile portion of an industrial area, Cherry Point, in Whatcom County. The area encompasses the site of an aluminum smelter, Intalco Aluminum LLC, and adjacent areas. Ecology, in consultation with NWCAA, developed this attainment plan to permanently reduce and control the amount of sulfur dioxide in the nonattainment area.
The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

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Keywords air quality designations, Whatcom County, public comment period, State Implementation Plan, sulfur dioxide, nonattainment, NAAQS
WEB PAGE Attainment State Implementation Plans