The Department of Natural Resources will hold a public hearing on proposed amendments to Ga. Comp. R. & Regs. r. 391-3-1-.02(4), Ambient Air Standards; Ga. Comp. R. & Regs. r. 391-3-1-.02(7), Prevention of Significant Deterioration of Air Quality; Ga. Comp. R. & Regs. r. 391-3-1-.02(9)(b), Emission Standards for Hazardous Air Pollutants. The amendments would correct the PM2.5 annual standards so that the number of significant digits is consistent with the federal standard, and incorporate additional standards to be consistent with federal standards. The hearing will be September 29, 2009. http://www.gaepd.org/environet/1/20090830_notice.pdf.