401 KAR 53:010. Ambient air quality standards

      Section 1. Ambient Air Quality Standards. The primary and secondary ambient air quality standards for sulfur oxides, particulate matter, carbon monoxide, ozone, nitrogen dioxide, lead, hydrogen sulfide, gaseous fluorides, total fluorides, and odors are specified in Appendix A of this administrative regulation. Measurements will be by methods specified in Section 2 of this administrative regulation.

 

      Section 2. Methods of Measurement. For those air contaminants for which there are state ambient air quality standards that are the same as the national ambient air quality standards, measurements shall be made according to reference methods, or their equivalent methods. For other air contaminants for which there are state ambient air quality standards, measurements shall be made according to methods as prescribed by the cabinet. The frequency of measurements for all air contaminants shall be prescribed by the cabinet.

 

      Section 3. Within sixty (60) days of promulgation or revision of any ambient air quality standard by the U.S. EPA, the cabinet shall initiate proceedings to promulgate or review this administrative regulation in conformance with the federal ambient air quality standards. (5 Ky.R. 376; Am. 997; eff. 6-6-79; 10 Ky.R. 432; eff. 3-1-84; 14 Ky.R. 1621; eff. 4-14-88; TAm eff. 8-9-2007.)

 

APPENDIX A TO 401 KAR 53:010 AMBIENT AIR QUALITY STANDARDS
The following air contaminant concentrations shall apply at any single point location:
CONTAMINANT	PRIMARY STANDARD	SECONDARY STANDARD
Sulfur Oxides (Sulfur Dioxide) mg/m3 Annual Arithmetic Mean, not to exceed Maximum Twenty-Four-Hour Average Maximum Three-Hour Average	80 (0.03 ppm) 365 (0.14 ppm)1 --	-- -- 1300 (0.50 ppm)1
Particulate Matter, measured as PM10 - mg/m3 Annual Arithmetic Mean, not to exceed Maximum Twenty-Four-Hour Average	502 1503	502 1503
Carbon Monoxide - mg/m3 Maximum Eight-Hour Average Maximum One-Hour Average	10 (9 ppm)1 40 (35 ppm)1	Same as primary Same as primary
Ozone - mg/m3 Maximum Average	235 (0.12 ppm)4	Same as primary
Nitrogen Dioxide - mg/m3 Annual Arithmetic Mean, not to exceed	100 (0.05 ppm)	Same as primary
Lead - mg/m3 Maximum Arithmetic Mean averaged over a calendar quarter	1.5	Same as primary
Hydrogen Sulfide - mg/m3 Maximum One-Hour Average	--	14 (0.01 ppm)1
Gaseous Fluorides - (expressed as HF) - mg/m3 Annual Arithmetic Mean, not to exceed Maximum One-Month Average Maximum One-Week Average Maximum Twenty-Four-Hour Average Maximum Twelve-Hour Average	400 (0.5 ppm) -- -- 800 (1.0 ppm)1 --	-- 0.82 (1.00 ppb)1 1.64 (2.00 ppb)1 2.86 (3.50 ppb)1 3.68 (4.50 ppb)1
Total Fluorides - ppm Dry weight basis (as fluoride ion) in and on forage for consumption by grazing ruminants The following concentrations are not to be exceeded: Average concentration of monthly samples over growing season (not to exceed 6 consecutive months) Two-Month Average One-Month Average	-- -- --	40 ppm (w/w) 60 ppm (w/w) 80 ppm (w/w)
Odors		At any time when 1 volume unit of ambient air is mixed with 7 volume units of odorless air, the mixture must have no detectable odor.

 

Footnotes:

¹This average is not to be exceeded more than once per year.

²The standard is attained when the expected annual arithmetic mean concentration, as determined in accordance with Appendix K to 40 CFR 50, is less than or equal to fifty (50) mg/m³.

³The standard is attained when the expected number of days per calendar year with a twenty-four (24) hour average concentration above 150 mg/m³, as determined in accordance with Appendix K of 40 CFR 50, is equal to or less than one (1).

⁴The standard is attained when the expected number of days per calendar year with maximum hourly average concentrations above 0.12 ppm (235 mg/m³) is equal to or less than one (1), as determined by Appendix H of 40 CFR 50.

Notation

      RELATES TO: KRS 224.20-100, 224.20-110, 224.20-120

      STATUTORY AUTHORITY: KRS 224.10-100

      NECESSITY, FUNCTION, AND CONFORMITY: KRS 224.10-100 requires the Environmental and Public Protection Cabinet to prescribe administrative regulations for the prevention, abatement, and control of air pollution. This administrative regulation is to fix ambient air quality standards necessary for the protection of the public health, the general welfare, and the property and people in this Commonwealth.