Notice ofProposed Rulemaking Before The Environmental Quality Council Bythe DepartmentofEnvironmental Quality AirQuality Division (AQD)

The Environmental Quality Council (EQC) will hold a public hearing beginning at 9:00AM on October 5, 2012. The hearing will be held at the Herschler Building, Conference Room B63, 122 W. 25th Street, Cheyenne, Wyoming.

The Wyoming Department ofEnvironmental Quality, Air Quality Division (AQD orDivision), will be bringing two proposed rulemakings before the EQC. The first proposed rulemaking will involve revising Wyoming Air Quality Standards and Regulations (WAQSR) Chapter 1, Common Provisions, Chapter 6, Permitting Requirements, and Chapter7,Monitoring Regulations. Modifications to these chapters incorporate language that will allowthe Stateto permit for greenhouse gases. In addition, these changes are proposed to be consistent with the requirements established in thecurrentFederal ImplementationPlan (FIP). Chapter 1, Sections 3 and 7, and Chapter6, Sections4 and 14, involve changes to the State Implementation Plan (SIP) to satisfY Clean Air Act (CAA) Sections 101, 114, 116, 301 and 307(d)(7)(B). After authorized in accordance with the 2012 State ofWyoming, Enrolled Act No. 16 (Senate File 0086), the AQD will submit these SIP changes to the Environmental Protection Agency (EPA) with the goal ofreplacing the currentGreenhouse Gas FIP with a SIP.

The second proposed rulemaking will involve revising WAQSR Chapter 2, Ambient Standards, Chapter 3, General Emission Standards, Chapter 

### 5, National Emission Standards, and Chapter 8, Nonattainment Area Regulations. Revisions to Chapter 2 consistofupdating the ambientN02, S02, and ozone standards to be consistentwith current federal regulations. Chapter 3, Section 4, Emission standards for sulfur oxides, is being repealed and superseded by

more updated regulations. Changes to Chapter 5 involve the removal ofthe vacated version of40 CFR part 63, Subpart DDDDD (Boiler MACT) from Section 3. Chapter 8, Section 3, Conformity ofgeneral federal actions to state implementation plans, is being revised to maintain consistency with the federal general conformity regulations. Chapter 2, Sections 3, 4, 6 and 12, Chapter3, Sections 4 and 9, and Chapter 8, Sections 3 and 5, involve changes to the SIP to satisfy CAA Sections 108, 109, 110 and 176. The AQD will submitthese SIP changesto theEPA.

The notice for submitting written comments on the WDEQ/AQD proposed revisions was first published on August I, 2012. The written commentperiod will close on September 17,2012. Written comments will also become apart ofthe public record ifthel are signed by the commenter and submitted to Administrator, WDEQ/AQD, Herschler Building 2-E, 122 W. 25 Street, Cheyenne, Wyoming, 82002, or faxed to 307-777-5616. Copies ofthe public notice and the proposed rules are available for public inspection at the Department ofEnvironmental Quality, Air Quality Division, Herschler Building, 2"d Floor, 122 W. 25th Street, Cheyenne, Wyoming. Electronic copies are available at http://dcg.statc.wv.us/aqd/index.asp andthe EQC website stated below. Ifyou have questions regarding the proposed rules, contactChristine Anderson, Air Quality Division, at 307-675-5624.

The WDEQ/AQD will file an analysis ofthe comments received. The EQC has scheduled the public hearing on October 5, 2012. TheEQC will considerthe proposed rules, written comments, and the analysis ofcomments, along with any modifications proposed by the WDEQ/AQD to the draft rules. At the public hearing, oral statements that focus on the written comments, the DEQ's analysis ofcomments and issues raised by the analysis will be accepted. Comments submitted during the comment period can be viewed at the EQC website: http://cgc.state.wy.us/docket.htm underthe linktitled "12-2101 and12-2102".

Any person wishing to use a digital presentation during theirtestimony before the EQC must provide a digital copy to the EQC no less than 3 days prior to the hearing unless you contact the EQC and request an extension for good

cause. Failure to timely submit a digital copy will result in the person not being allowed to use the presentation during their testimony.

The EQC may convene a meeting to deliberate and make a decision on these rules at the end ofthe hearing. The EQC also hasthe optionto extend the public commentperiod onthese rules. Ifthe commentperiod is extended, the extension will be posted on the Air Quality website as well as the website for the Environmental Quality Council http://dcq.statc.wv.us/cqc/index.asp.

In accordance with theAmericanswithDisabilitiesAct, specialassistance oralternative formats willbe made available upon request for individualswith disabilities