WSR 06-24-124


[ Filed December 6, 2006, 9:43 a.m. ]


State Implementation Plan Revision:

Interstate Transport

of Ozone and Fine Particulate Matter

The department of ecology (ecology) developed this revision to the Washington state implementation plan (SIP) to meet requirements of the Clean Air Act regarding interstate transport of ozone (O3) and fine particulate matter (PM2.5). On July 18, 1997, EPA promulgated revised National Ambient Air Quality Standards (standards) for O3 and new standards for PM2.5. When EPA adopts a new or revised air quality standard, the Clean Air Act requires states to prepare a SIP, which is a statewide plan for meeting federal standards. This SIP must prohibit air pollutants in amounts that will contribute significantly to nonattainment of standards, or interfere with maintenance of the standards, in another state. It must also prohibit air pollutants in amounts that will interfere with measures in another state's SIP to prevent significant deterioration of air quality or protect visibility.

Ecology will hold a public hearing to receive comments on this revision to the Washington SIP. The hearing is the first of two separate ecology hearings, scheduled as follows: Thursday, January 4, 2007, at 2:00 p.m., at the Department of Ecology, 300 Desmond Drive, Auditorium Room 36, Lacey, WA.

Written comments must be postmarked no later than January 5, 2007, and should be sent to Doug Schneider, Department of Ecology, P.O. Box 47600, Olympia, WA 98504-7600.

For more information about the updates or the SIP process prior to the hearing, please contact Doug Schneider, (360) 407-6874.

Washington State Code Reviser's Office