OAR 340-224-0060: Requirements for Sources in Maintenance Areas

Within a designated maintenance area, a source subject to Major NSR must meet the requirements listed below for each maintenance pollutant: (1) OAR 340-224-0070; and (2) Net Air Quality Benefit: Except for sources described in section (7), the owner or operator of the source must satisfy one of the requirements listed below: (a) OAR 340-224-0510 and 340-224-0520 for ozone maintenance areas or 340-224-0510 and 340-224-0530(3) and (4) for non-ozone maintenance areas, whichever is applicable; (b) Demonstrate that the source or modification will not cause or contribute to an air quality impact in excess of the impact levels in OAR 340-202-0225 by performing the analysis specified in 340-225-0045; or (c) Obtain an allocation from a growth allowance. The requirements of this section may be met in whole or in part in an ozone or carbon monoxide maintenance area with an allocation by DEQ from a growth allowance, if available, under the applicable maintenance plan in the SIP adopted by the EQC and approved by EPA. Procedures for allocating the growth allowances for the Oregon portion of the Portland-Vancouver Interstate Maintenance Area for Ozone and the Portland Maintenance Area for Carbon Monoxide are contained in OAR 340-242-0430 and 340-242-0440. (3) Sources Impacting Other Designated Areas: The owner or operator of any source that will have a significant impact on air quality in a designated area other than the one the source is locating in must also meet the following requirements, as applicable: (a) The owner or operator of any source that emits an ozone precursor (VOC or NOx) at or above the SER over the netting basis is considered to have a significant impact if located within 100 kilometers of a designated ozone area, and must also meet the requirements for demonstrating net air quality benefit under OAR 340-224-0510 and 340-224-0520 for ozone designated areas. (b) The owner or operator of any source that emits any criteria pollutant, other than NOx as an ozone precursor, at or above the SER over the netting basis and has an impact equal to or greater than the Class II SIL on another designated area must also meet the requirements for demonstrating net air quality benefit under OAR 340-224-0510 and 340-224-0540 for designated areas other than ozone designated areas. (4) Contingency Plan Requirements. If the contingency plan in an applicable maintenance plan is implemented due to a violation of an ambient air quality standard, this section applies in addition to other requirements of this rule until the EQC adopts a revised maintenance plan and EPA approves it as a SIP revision. (a) The source must comply with the LAER requirement in OAR 340-224-0050(1) in lieu of the BACT requirement in section (1); and (b) The source must comply with the net air quality benefit requirement in subsection (2)(a) and may not apply the alternatives provided in subsections (2)(b) and (2)(c). (5) Medford-Ashland AQMA: A source that would emit PM10 within the Medford-Ashland AQMA must meet the LAER emission control technology requirements in OAR 340-224-0050. (6) Pending Redesignation Requests. This rule does not apply to a source for which a complete application to construct was submitted to DEQ before the maintenance area was redesignated from nonattainment to attainment by EPA. Such a source is subject to OAR 340-224-0050 or 340-224-0055, whichever is applicable. (7) The following sources are exempt from net air quality benefit under section (2) as follows: (a) Sources within or affecting the Medford Ozone Maintenance Area are exempt from the requirement for NOx offsets relating to ozone formation; and (b) Sources within or affecting the Salem Ozone Maintenance Area are exempt from the requirement for VOC and NOx offsets relating to ozone formation. NOTE: This rule is included in the State of Oregon Clean Air Act Implementation Plan that EQC adopted under OAR 340-200-0040. [Publications: Publications referenced are available from the agency.]