Or. Admin. R. 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:
1. (a) Monitoring data showing that an area is exceeding or has the potential to exceed an ambient air quality standard;
2. (b) A description of the affected area based on the monitoring data;
3. (c) A discussion and identification of the priority sources contributing to the exceedance or potential exceedance of the ambient air quality standard; and
4. (d) A discussion of the reasons for the proposed designation.
(2) Designation of sustainment areas:
1. (a) The Lakeview UGB as defined in OAR 340-204-0010 is designated as a sustainment area for PM2.5.
2. (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:
1. (a) Whether at least three consecutive years of monitoring data shows the area is meeting the ambient air quality standard; and
2. (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.]

ORS 468.020 & 468A

ORS 468A.025 & 468A.035