Virginia Administrative Code
Title 9 - ENVIRONMENT
Agency 5 - STATE AIR POLLUTION CONTROL BOARD
Chapter 30 - AMBIENT AIR QUALITY STANDARDS
Section 9VAC5-30-60 - Particulate matter (PM10)
Universal Citation: 9 VA Admin Code 5-30-60
Current through Register Vol. 41, No. 3, September 23, 2024
A.
1. The primary and secondary 24-hour ambient
air quality standard is 150 micrograms per cubic meter--24-hour average
concentration.
2. The standard is
attained when the expected number of days per calendar year with a 24-hour
average concentration above 150 micrograms per cubic meter, as determined in
accordance with Appendix K of 40 CFR Part 50, is equal to or less than
one.
B. (Reserved.)
C. For the purpose of determining attainment of the primary and secondary standards, particulate matter shall be measured in the ambient air as PM10 (particles with an aerodynamic diameter less than or equal to a nominal 10 micrometers) by a reference method based on Appendix J of 40 CFR Part 50, or other method designated as such, or by an equivalent method.
Statutory Authority
§ 10.1-1308 of the Code of Virginia; §§ 108, 109 and 302 of the Clean Air Act; 40 CFR Parts 50, 53 and 58.
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