Or. Admin. R. 340-224-0260 - Requirements for Sources in Maintenance Areas

Within a designated maintenance area, a source subject to State NSR must meet the following requirements for each maintenance pollutant:

(1) If the increase in emissions is the result of a major modification, the owner or operator of the source must apply BACT under OAR 340-224-0070(2), except for a PM10 source in the Medford/Ashland AQMA where the owner or operator of the source must apply LAER under 340-224-0050(1).

(2) Air Quality Protection: The owner or operator of the source must satisfy the requirements of either subsections (a), (c), and (d) or of subsections (b), (c) and (d):

(a) Air Quality Analysis: The owner or operator of the source must comply with OAR 340-225-0050(1) and (2) and 340-225-0060 for each regulated pollutant for which emissions will exceed the netting basis by the SER or more due to the proposed source or modification. For emissions increases of direct PM2.5 or PM2.5 precursors equal to or greater than the SER, the owner or operator must provide an analysis of PM2.5 air quality impacts based on all increases of direct PM2.5 and PM2.5 precursors.

(b) Net Air Quality Benefit: The owner or operator of the source must satisfy the requirements of paragraph (A), (B) or (C), as applicable:

(A) OAR 340-224-0510 and 340-224-0520 for ozone maintenance areas or OAR 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 equal to or greater than the impact levels in OAR 340-202-0225 by performing the analysis specified in OAR 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.

(c) The owner or operator of a federal major source must comply with OAR 340-225-0050(4) and 340-225-0070.

(d) The owner or operator of the source must demonstrate that it will not cause or contribute to a new violation of an ambient air quality standard or PSD increment even if the single source impact is less than the significant impact level under OAR 340-225-0050(1).

(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 owner or operator must comply with paragraph (2)(b)(A).

NOTE: This rule is included in the State of Oregon Clean Air Act Implementation Plan that EQC adopted under OAR 340-200-0040.

Notes

Or. Admin. R. 340-224-0260

DEQ 7-2015, f. & cert. ef. 4/16/2015

Stat. Auth.: ORS 468.020, 468A.025, 468A.035, 468A.040, 468A.050, 468A.055 & 468A.070

Stats. Implemented: ORS 468A