Washington Administrative Code › Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508) › Chapter 173-400 - General regulations for air pollution sources › Section 173-400-113 - New sources in attainment or unclassifiable areas - Review for compliance with regulations

Current through Register Vol. 24-14, July 15, 2024
WAC
				173-400-110,
				173-400-111,
				173-400-112, and
				173-400-113 apply statewide
				except where a permitting authority has adopted its own new source review
				regulations. The permitting authority that is reviewing an application to
				establish a new source or modification in an attainment or unclassifiable area
				shall issue an order of approval if it determines that the proposed project
				satisfies each of the following requirements:
(1) The proposed new source or modification
			 will comply with all applicable new source performance standards, national
			 emission standards for hazardous air pollutants, national emission standards
			 for hazardous air pollutants for source categories, emission standards adopted
			 under chapter 70.94
			 RCW and, for sources regulated by an authority, the applicable emission
			 standards of that authority.
(2)
			 The proposed new source or modification will employ BACT for all pollutants not
			 previously emitted or whose emissions would increase as a result of the new
			 source or modification.
(3)
			 Allowable emissions from the proposed new source or the increase in emissions
			 from the proposed modification will not cause or contribute to a violation of
			 any ambient air quality standard. If the modeled concentrations of allowable
			 emissions from the proposed new source or the increase in emissions from the
			 proposed modification are below the levels in Table 4a, the proposed source
			 does not contribute to a violation of an ambient air quality
			 standard.
(4)
(a) If the projected impact of the allowable
			 emissions from the proposed new major stationary source (as defined in WAC
			 173-400-810)  or the projected
			 impact of the increase in allowable emissions from the proposed major
			 modification (as defined in WAC
			 173-400-810)  at any location
			 within a nonattainment area does not exceed the following levels for the
			 pollutants for which the area has been designated nonattainment, then the
			 proposed new source or modification will not be considered to cause or
			 contribute to a violation of an ambient air quality standard:
Table 4a: Cause or Contribute Threshold Values for
				Nonattainment Area Impacts
Pollutant
Annual Average
24-Hour Average
8-Hour Average
3-Hour Average
1-Hour Average
CO-
-
0.5 mg/m3
-
2 mg/m3
SO2
1.0 µg/m3
5 µg/m3
-
25 µg/m3
30 µg/m3
PM10
1.0 µg/m3
5 µg/m3
-
-
-
PM2.5
0.3 µg/m3
1.2 µg/m3
NO2
1.0 µg/m3
-
-
-
-
(b) If
			 the projected impact of the allowable emissions from the proposed new major
			 stationary source (as defined in WAC
			 173-400-810)  or the projected
			 impact of the increase in allowable emissions from the proposed major
			 modification (as defined in WAC
			 173-400-810)  results in a
			 projected impact at any location inside a nonattainment area above the
			 appropriate value in Table 4a of this section may use an offsetting emission
			 reduction or other method identified in  40 C.F.R. Part 51  Appendix S, Sections
			 III and IV.A which reduce the projected impacts to the above values or less. If
			 the owner or operator of the proposed new major stationary source or major
			 source proposed to be modified is unable to reduce emissions or obtain
			 offsetting emissions reductions adequate to reduce modeled impacts below the
			 values in Table 4a of this section, then the permitting authority shall deny
			 approval to construct and operate the proposed new major stationary source or
			 major modification.