Washington SIP: EPA Approved Regulations (Table 9 - Spokane Regional Clean Air Agency)

Latest EPA Action: April 16, 2025

Note: The official SIPs are contained in regulations promulgated in the Federal Register and codified in the U.S. Code of Federal Regulations (CFR). EPA’s web-versions of the approved SIPs are for reference. While we make every effort to maintain the accuracy of the files accessible here, inconsistencies may occur. Please contact us if you find any errors in these files.

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[Applicable in Spokane county, excluding facilities subject to Energy Facilities Site Evaluation Council (EFSEC) jurisdiction; facilities subject to the Washington Department of Ecology's direct jurisdiction under Chapters 173-405, 173-410, and 173-415 Washington Administrative Code (WAC); Indian reservations; any other area where the EPA or an Indian tribe has demonstrated that a tribe has jurisdiction; and the Prevention of Significant Deterioration (PSD) permitting of facilities subject to the applicability sections of WAC 173-400-700.]

40 CFR part 52.2470(c)
Table 9 - Additional Regulations Approved for the Spokane Regional Clean Air Agency (SRCAA) Jurisdiction
State/local
citation		 Title/subject State/local
effective date		 EPA approval date Explanations
Spokane Regional Clean Air Agency Regulations
Regulation I—Article I—Policy, Short Title, and Definitions
1.01 Policy 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		 Subsections (A) and (B) replace WAC 173–400–010.
1.02 Name of Agency 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
1.03 Short Title 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
1.04 General Definitions 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsections (17), (41), (52), (60), (74), (101), (112), (119), and (122). Section 1.04 replaces WAC 173-400-030 except the following WAC 173-400-030 definitions adopted by reference in subsection 2.14(A)(1): Adverse Impact on Visibility; Capacity Factor; Class I Area; Dispersion Technique; Emission Threshold; Excess Stack Height; Existing Stationary Facility; Federal Class I Area; Federal Land Manager; Fossil Fuel-fired Steam Generator; General Process Unit; Greenhouse Gases; Industrial Furnace; Mandatory Class I Federal Area; Natural Conditions; Projected Width; Reasonably Attributable; Sulfuric Acid Plant; and Wood Waste.
1.05 Acronym Index 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
Regulation I—Article II—General Provisions
2.08 Falsification of Statements or Documents, and
Treatment of Documents.		 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Subsection (E) replaces WAC 173-400-105(6). Subsection (F) replaces WAC 173-400-105(8).
2.09 Source Tests 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Section 2.09 replaces WAC 173–400–105(4).
2.13 Federal and State Regulation Reference Date. 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Subsection (A) replaces WAC 173-400-025.
2.14 Washington Administrative Codes (WACS). 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)

Subsection (A)(1) only, and only with respect to those revised Chapter 173–400 WAC provisions that are identified for incorporation by reference in the table below.
Regulation I—Article IV—Registration
4.03 Registration Exemptions 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Subsections (B) and (C) only.
4.04 Stationary Sources and
Source Categories Subject to Registration.		 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsection (A)(5)(b) and any other provision as it relates to the regulation of toxic air pollutants or odors.
4.05 Closure of a Stationary
Source or Emissions
Unit(s).		 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
Regulation I—Article V—New Source Review for Stationary Sources and Portable Sources
5.02 New Source Review—Applicability and when Required 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsections (C)(5), (I)(1)(a), and any other provision as they relate to the regulation of toxic air pollutants or odors. Section 5.02 replaces WAC 173–400–110. Subsection (F) replaces WAC 173–400–111(2).
5.03 NOC and PSP Fees 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
5.04 Information Required 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsection (A)(8). Collectively, sections 5.04, 5.06, 5.07, 5.10, 5.13, and 5.14 replace the permitting procedures in WAC 173–400–111.
5.05 Public Involvement 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsection (C)(15). Section 5.05 replaces WAC 173–400–171.
5.06 Application Completeness
Determination		 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)

Collectively, sections 5.04, 5.06, 5.07, 5.10, 5.13, and 5.14 replace the permitting procedures in WAC 173–400–111.
5.07 Processing NOC Applications for Stationary Sources 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsections (A)(1)(g) and (B). Collectively, sections 5.04, 5.06, 5.07, 5.10, 5.13, and 5.14 replace the permitting procedures in WAC 173–400–111, and subsection 5.07(A)(7) replaces WAC 173–400–110(2)(a).
5.08 Portable Sources 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsection (A)(6). Section 5.08 replaces WAC 173–400–036.
5.09 Operating Requirements
for Order of Approval
and Permission to Operate		 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except subsection (C).
5.10 Changes to an Order of
Approval or Permission
to Operate		 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Collectively, sections 5.04, 5.06, 5.07, 5.10, 5.13, and 5.14 replace the permitting procedures in WAC 173–400–111.
5.11 Notice of Startup of a Stationary Source or a
Portable Source		 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
5.12 Work Done Without an
Approval		 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
5.13 Order of Approval Construction Time Limits 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Collectively, sections 5.04, 5.06, 5.07, 5.10, 5.13, and 5.14 replace the permitting procedures in WAC 173–400–111.
5.14 Appeals 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)

Collectively, sections 5.04, 5.06, 5.07, 5.10, 5.13, and 5.14 replace the permitting procedures in WAC 173–400–111.
5.15 Obligation to Comply 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		  
Regulation I—Article VI—Emissions Prohibited
6.04 Emission of Air Contaminant:
Detriment to Person
or Property		 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Subsections (A), (B), (C), and (H) only and excepting provisions in RCW 70A.15.4530 (incorporated by reference) that relate to odor. Subsection (C) replaces WAC 173–400–040(6).
6.05 Particulate Matter and Preventing Particulate Matter from Becoming Airborne 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except subsection (A). Section 6.05 supplements but does not replace WAC 173–400–040(4) and (9).
6.07 Emission of Air Contaminant
Concealment and
Masking Restricted		 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Section 6.07 replaces WAC 173–400–040(8).
6.14 Standards for Control of Particulate Matter on Paved Surfaces 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Section 6.14 supplements but does not replace WAC 173–400–040(9).
6.15 Standards for Control of Particulate Matter on Unpaved Roads 09/01/20 5/10/21
FR 86 24718 (pdf) (309 KB)		 Section 6.15 supplements but does not replace WAC 173–400–040(9).
Regulation I—Article VIII—Solid Fuel Burning Device Standards
8.01 Purpose 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
8.02 Applicability 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
8.03 Definitions 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsection (A)(6).
8.04 Emission Performance Standards 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		 Except the incorporation by reference of WAC 173–433–130, 173–433–170, and 173–433–200.
8.05 Opacity Standards 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
8.06 Prohibited Fuel Types 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
8.07 Curtailment 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
8.08 Exemptions 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)

Except subsection (A)(4).
8.09 Procedure to Geographically Limit Solid Fuel Burning Devices 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
8.10 Restrictions on Installation of Solid Fuel Burning Devices 7/15/23 4/16/25
90 FR 15930 (pdf) (245 KB)		  
Washington Department of Ecology Regulations
Washington Administrative Code, Chapter 173-400—General Regulations for Air Pollution Sources: Adopted by Reference in SRCAA Regulation I, Subsection 2.14(A)(1)
173-400-020 Applicability 3/22/91 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-030(24) Definitions 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-030 Definitions 9/16/18 5/10/21
FR 86 24718 (pdf) (309 KB)		 Only the following definitions: Adverse Impact on Visibility; Capacity Factor; Class I Area; Dispersion Technique; Emission Threshold; Excess Stack Height; Existing Stationary Facility; Federal Class I Area; Federal Land Manager; Fossil Fuel-fired
Steam Generator; General Process Unit; Greenhouse Gases; Industrial Furnace; Mandatory Class I Federal Area; Natural Conditions; Projected Width; Reasonably Attributable; Sulfuric Acid Plant; and Wood Waste.
173-400-040(1)(a) & (b) General Standards for Maximum Emissions 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-040 General Standards for Maximum Emissions 9/16/18 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except: 173–400–040(2); 173–400–040(3); 173–400–040(5); 173–400–040(6); 173–400–040(8).
173-400-050 Emission Standards for Combustion and Incineration Units 9/16/18 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except: 173–400–050(2); 173–400–050(4); 173–400–050(5); 173–400–050(6).
173-400-060 Emission Standards for General Process Units 11/25/18 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-070 Emission Standards for Certain Source Categories 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		 Except (7)
173-400-081 Startup and Shutdown 9/20/93 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-091 Voluntary Limits on Emissions 4/1/11 5/10/21
FR 86 24718 (pdf) (309 KB)		 9/20/93 version continues to be approved under the authority of CAA Section 112(l) with respect to Section 112 hazardous air pollutants. See 60 FR 28726 (June 2, 1995).
173-400-105 Records, Monitoring and Reporting 11/25/18 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except: 173–400–105(3); 173–400–105(4); 173–400–105(6); 173–400–105(8).
173-400-107 Excess Emissions 9/20/93 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-112 Requirements for New Sources in Nonattainment Areas 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except (8).
173-400-113 Requirements for New Sources in Attainment or Unclassifiable Areas 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except: 173–400–113(3), second sentence.
173-400-117 Special Protection Requirements
for Federal
Class I Areas		 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-118 Designation of Class I, II, and III Areas 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-131 Issuance of Emission Reduction
Credits		 4/1/11 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-136 Use of Emission Reduction
Credits (ERC)		 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-151 Retrofit Requirements for Visibility Protection 2/10/05 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-161 Compliance Schedules 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-175 Public Information 2/10/05 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-190 Requirements for Nonattainment Areas 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-200 Creditable Stack Height & Dispersion Techniques 2/10/05 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-205 Adjustment for Atmospheric Conditions 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-210 Emission Requirements of Prior Jurisdictions 3/22/91 6/2/95
60 FR 28726 (pdf) (127 KB)		  
173-400-560 General Order of Approval 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		 Except: The part of 173–400–560(1)(f) that says, ‘‘173–460 WAC’’.
173-400-800 Major Stationary Source and Major Modification
in a Nonattainment
Area		 4/1/11 5/10/21
FR 86 24718 (pdf) (309 KB)		 EPA did not review WAC 173–400–800 through 860 for consistency with the August 24, 2016 PM2.5 implementation rule (81 FR 58010); nor does SRCAA have an obligation to submit rule revisions to address the 2016  PM2.5 implementation rule at this time.
173-400-810 Major Stationary Source and Major Modification
Definitions		 7/1/16 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-820 Determining if a New Stationary Source or Modification to a Stationary Source is Subject to these Requirements 12/29/12 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-830 Permitting Requirements 7/1/16 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-840 Emission Offset Requirements 7/1/16 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-850 Actual Emissions
Plantwide Applicability
Limitation (PAL)		 7/1/16 5/10/21
FR 86 24718 (pdf) (309 KB)		  
173-400-860 Public Involvement Procedures 4/1/11 5/10/21
FR 86 24718 (pdf) (309 KB)		  

Full Text of Approved Rules

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Last updated on June 11, 2025