West Virginia Code of State Rules Agency 45 - Air Quality
Here’s a comprehensive overview of West Virginia Code of State Rules – Agency 45: Air Quality under Title 45 of the Legislative Rule (Dept. of Environmental Protection – Air Quality) (regulations.justia.com):
📚 Title 45 – Air Quality (Agency 45)
Title 45 comprises a wide range of regulatory series addressing ambient air quality, emissions standards, and permitting requirements:
🗂️ Series Overview:
45‑01: Alternative emissions during startup, shutdown, maintenance (regulations.justia.com, apps.sos.wv.gov)
45‑02 / 02A: Particulate control for fuel combustion & monitoring/reporting
45‑03: Emissions from hot mix asphalt plants
45‑04: Odor-causing pollutants
45‑05: Coal prep plants & refuse operations
45‑06: Combustion of refuse
45‑07 / 07A: Particulate matter from manufacturing and test procedures (regulations.justia.com)
45‑08: Ambient air quality standards (current effective June 1, 2025) (apps.sos.wv.gov)
45‑09: Historic standards (CO and ozone) – repealed (code.wvlegislature.gov)
45‑10 / 10A: Sulfur oxides emissions & monitoring/reporting
45‑11: Air pollution emergency episodes
45‑12: Historic nitrogen dioxide standards – repealed
45‑13 / 13A / 13B: Permitting for stationary sources, R&D, lab facilities
45‑14: PSD permitting for major sources
45‑15: Hazardous air pollutants standards – repealed
45‑16: NSPS (new source performance standards)
45‑17 / 18: Fugitive dust and particulate from materials handling & specific devices
45‑19: Nonattainment area permitting
45‑20: Stack height engineering practices
45‑21: VOC emissions control, including definitions and coatings regulations (regulations.justia.com)
45‑22: Air Quality Management Fee Program
45‑23: Landfill emissions
45‑27: Toxic air pollutants
45‑29 / 30 / 32 / 38: Emission statements, operating permits, violation classifications, and compliance determination
🔍 Highlights
🟢 Ambient Air Quality (Series 45‑08)
Sets WV’s standards for CO, O3, PM, SO₂, NO₂, lead—aligned with federal NAAQS.
The latest update took effect June 1, 2025; originally effective June 1, 2024 (regulations.justia.com, downloads.regulations.gov).
WV submitted these updates to EPA in July 2024 as part of its SIP review (ecfr.gov).
⚙️ Startup/Shutdown Emissions (Series 45‑01)
Defines alternative emission limits specifically during plant startup, shutdown, and maintenance.
The current rule became effective June 1, 2024 (apps.sos.wv.gov, downloads.regulations.gov).
🏭 Particulate Matter from Manufacturing (Series 45‑07)
Regulates smoke, particulate emissions, fugitive dust, reporting, and exemptions.
These rules were updated effective June 1, 2024 .
🧪 Volatile Organic Compounds (Series 45‑21)
Comprehensive VOC rules covering definitions, applicability, compliance, coatings, storage, and specific source categories (casetext.com).
🧭 Why This Matters
Public Health & Environmental Protection: Ambient standards and technical requirements safeguard air quality and public welfare.
Industry Compliance: Facilities must follow permitting rules and mitigation strategies based on operational types.
Federal Consistency: Updates ensure WV remains compliant with Clean Air Act requirements.
✅ Summary Table
Series
Focus Area
45‑01
Alt. emission limits for startup/shutdown/maintenance
45‑02/02A
Fuel combustion particulate control
45‑07/07A
Manufacturing particulate matter standards & testing
45‑08
Ambient air quality standards (CO, SO₂, NO₂, PM, O₃, Pb)
45‑10/10A
Sulfur oxides emission & monitoring
45‑11
Air pollution emergency episodes
45‑13
Stationary source permits & evaluations
45‑14
PSD permitting for major sources
45‑16
New source performance standards
45‑17/18
Fugitive dust emissions control
45‑19
Nonattainment area permitting
45‑20
Stack heights engineering
45‑21
VOC emission regulations (coatings, tanks, refineries)
45‑22
Air quality fee structure
45‑23
Landfill gas emissions
45‑27
Toxic pollutant control
45‑29/30/32/38
Reporting, permits, violations, compliance
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