OAR 340-204-0300: Designation of Sustainment Areas

(1) The EQC may designate sustainment areas provided that DEQ submits a request for designation that includes the following information: (a) Monitoring data showing that an area is exceeding or has the potential to exceed an ambient air quality standard; (b) A description of the affected area based on the monitoring data; (c) A discussion and identification of the priority sources contributing to the exceedance or potential exceedance of the ambient air quality standard; and (d) A discussion of the reasons for the proposed designation. (2) Designation of sustainment areas: (a) The Lakeview UGB as defined in OAR 340-204-0010 is designated as a sustainment area for PM2.5. (b) Reserved (3) An area designated as a sustainment area under section (2) will automatically be reclassified immediately upon the EPA officially designating the area as a nonattainment area. (4) The EQC may rescind the designation based on a request by DEQ. DEQ will consider the following information for rescinding the designation: (a) Whether at least three consecutive years of monitoring data shows the area is meeting the ambient air quality standard; and (b) A request by a local government. [NOTE: This rule is included in the State of Oregon Clean Air Act Implementation Plan that EQC adopted under OAR 340-200-0040.]