DEPARTMENT OF NATURAL RESOURCES AND ENVIRONMENTAL CONTROL
Division of Air and Waste Management
Air Quality Management Section
REGISTER NOTICE
Reg. No. 3, Ambient Air Quality Standards
Brief Synopsis of the Subject, Substance and Issues:
The Department of Natural Resources and Environmental Control, in accordance with 7 Del. C. §6010, is proposing to revise Regulation No. 3 - Ambient Air Quality Standards, Section 11.2, in the Regulations Governing the Control of Air Pollution. This amendment adds both a primary and a secondary air quality standard for fine particulate matter.
Possible Terms of the Agency Action:
The Regulation has no expected sunset.
Statutory Basis or Legal Authority to Act:
7 Del C. Section 6010
List of Other Regulations That May be Impacted or Affected by the Proposal:
None
Notice Of Public Comment:
The Secretary of The Department of Natural Resources and Environmental Control is proposing to revise Regulation No. 3 - Ambient Air Quality Standards, Section 11.2, in the Regulations Governing the Control of Air Pollution. This amendment adds both a primary and a secondary air quality standard for fine particulate matter. A public hearing to consider this proposal will be held on July 8, 1999, at the Richardson and Robbins Auditorium, 89 Kings Highway, Dover, DE, at 6:00 PM.
The proposed revised regulations are available for public inspection at The Department of Natural Resources and Environmental Control, Air Quality Management Office, 156 South State Street, Dover, Delaware. For additional information please call Ray Malenfant at (302) 739-4791.
Regulation No. 3 - AMBIENT AIR QUALITY
STANDARDS
Section 11 - PM10 and PM2.5 Particulates
11.1 The Primary and Secondary Ambient Air Quality Standards for Particulate Matter, measured as PM10 are:
a. …..
b. …..
11.2 The Primary and Secondary Ambient Air Quality Standards for Particulate Matter, measured as PM2.5 are:
a. [Reserved] 65 micrograms per cubic meter (Fg/m3) 24-hour average concentration. The 24-hour primary and secondary PM2.5 standards are met when the 98th percentile 24-hour concentration, as determined in accordance with 40 CFR, Part 50, Appendix N, as found in the Federal Register dated July 18, 1997, on page 38757 -38758, is less than or equal to 65 Fg/m3.
b. [Reserved] 15.0 micrograms per cubic meter (Fg/m3) annual arithmetic mean concentration. The annual primary and secondary PM2.5 standards are met when the annual arithmetic mean concentration, as determined in accordance with 40 CFR, Part 50, Appendix N, as found in the Federal Register dated July 18, 1997, on page 38756 -38757, is less than or equal to 15.0 Fg/m3.