Background

The Grants Pass, Oregon, Urban Growth Boundary was designated nonattainment for PM₁₀ and classified as moderate upon enactment of the Clean Air Act Amendments in 1990.

Oregon submitted a PM₁₀ attainment plan on November 15, 1991, and EPA approved the plan on December 17, 1993 (58 FR 65934 (PDF)(3 pp, 391 K, About PDF)).

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

The EPA approved ODEQ’s maintenance plan to ensure continued compliance with the PM₁₀ NAAQS for ten years on October 27, 2003 (68 FR 61111 (PDF)(6 pp, 150 K)).

On April 22, 2015 Oregon Department of Environmental Quality submitted a second 10-year maintenance plan for the Grants Pass area for PM₁₀. The plan explains how this area will continue to meet the PM₁₀ National Ambient Air Quality Standard for a second 10-year period through 2025. The EPA approved ODEQ’s second ten year maintenance plan to ensure continued compliance with the PM₁₀ NAAQS for ten years on July 30, 2015. (80 FR 45431 (PDF)(5 pp, 275 K)).

Summary

The plan relies on control strategies needed to ensure attainment of the PM₁₀ National Ambient Air Quality Standards (NAAQS). The strategy focuses on control of industrial emissions and residential wood combustion. Additional reductions are expected from statewide efforts to reduce slash burning smoke.

EPA Effective Date

September 28, 2015