Section 52.581 - Significant deterioration of air quality(a) All applications and other information required pursuant to § 52.21 of this part from sources located in the State of Georgia shall be submitted to the State agency, Georgia Department of Natural Resources, Environmental Protection Division, Air Protection Branch, 4244 International Parkway, Suite 120, Atlanta, Georgia 30354 rather than to EPA's Region 4 office. 77 FR 23398 , Apr. 19, 2012