The Ohio Environmental Protection Agency will conduct a public hearing to consider minor amendments to OAC rules 3745-14-01, 3745-14-03, 3745-14-05, 3745-14-06, 3745-14-11, and 3745-14-12 concerning rules about nitrous oxide and other topics related to air quality. The above-mentioned rules are a part of Ohio's SIP and the proposed amendments will be submitted to U.S. EPA as a modification of the SIP. http://www.registerofohio.state.oh.us/pdfs/phn/3745_NO_48757_20080410_0846.pdf.