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Summary of Grants Pass Carbon Monoxide (CO) 2nd 10-year Limited Maintenance Plan


In August, 2000, the EPA approved the first maintenance plan designed to maintain compliance with the CO standard in Grants Pass, OR through the year 2015 (65 FR 52932 (PDF)(7 pp, 235 K, About PDF)).

While the central business district represented the maintenance area, the EPA considered the Urban Growth Boundary (UGB) to be a more representative area of influence for carbon monoxide emissions, and the 1993 emission inventory was prepared for the UGB. In addition to approving ODEQ’s maintenance plan for the area, the EPA also approved ODEQ’s request to redesignate the Grants Pass area to attainment of the CO standard (65 FR 52932).

On November 5, 1999, Oregon submitted a complete rule renumbering and relabeling package to EPA for approval in the SIP, which the EPA approved on January 22, 2003 (68 FR 2891 (PDF)(19 pp, 205 K)).

This CO LMP is designed to keep Grants Pass in attainment with the CO standard for a second 10-year period beyond re-designation, through 2025. The EPA approved ODEQ’s second ten year maintenance plan to ensure continued compliance with the CO NAAQS for ten years on July 28, 2015 (80 FR 44864 (PDF)(5 pp, 235 K)).


The plan relies on control strategies needed to maintain the CO National Ambient Air Quality Standards (NAAQS). The strategy focuses on the Federal Motor Vehicle Emissions Control Program; discontinuation of oxygenated fuel; and Best Available Control Technology for carbon monoxide emissions from major new or expanding industry.

EPA Effective Date

September 28, 2015