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To protect, conserve and enhance the quality of Wyoming's 

env/ronrn_e[l.t for the benefit of current and future qenerations. 

Matthew H. Mea'a, .Gove~nor ':. · · · Todd Paliitt. Director . 

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Section 3 of Chapter 1, Common ·Provisions; \Vai iev{;e4 to ·add thed~fiAit1qr of:'. ·. : 

"Greenhouse gases (GHGs)." A new Section 7, Gr~eriliouse .gases;AY:as added to require the: 

permitting of sources of greenhouse gases, exempt riiilior source$ from greenhouse gas: ·~ :t. 

permitting, and provide several off ramps for greerihouse gas perinitting.:. 'Off ramp language wa;s' ,' 

not included in the SIP submittal. · ·' . . · 

·- ,. 

Section 4 of Chapter 6, Permitting Requirements, was modified to allow for the' , ; : ·· 

permitting of greenhouse gases under the PSD program. Definitions for "Greenhouse gases,,;: 

(GHGs)," "emissions increase," and "tpy C02 equivalent emissions (COze)" with exclusiob's~.((J.r·f· 

biogenic sources, were added to this section. Applicability thresholds for several different types 

of permitting scenarios were also added. Changes were made to the PSD definition of"Major 

source" to avoid triggering applicability on minor sources. A temporary phrase was inserted in 

Section 14, Incorporation by reference, to allow adoption by reference of greenhouse gas-related 

regulations that came after July 1, 2010. 

Herschler Building · 122 West 25th Street · Cheyenne, WY 82002 · http://deq.state.wy.us 
Mr. Howard Cantor 

March 8, 2013 

Page 2 

After reviewing comments received before or during the public hearing, the 

Environmental Quality Council approved the proposed revisions on October 5, 2012. Pursuant 

to the Wyoming Administrative Procedures Act, the revisions were forwarded to the Governor's 

Office for approval. The Wyoming Legislature recently completed all of the necessary 

legislation which allows the State of Wyoming to regulate GHGs and submit those regulation 

changes to the Environmental Protection Agency. Upon completion of this legislation, the rule 

revisions were transmitted to the Secretary of State's Office, and became effective on February 

14,2013. 

In the process of preparing the SIP submittal for GHG permitting provisions, it quickly 

became apparent that there are two prior Wyoming SIP submittals involving the same State 

regulations which require prompt EPA action as well. The first ofthese submittals was received 

by EPA on 5/11/2011, and the second submittal was received on 5/25/2012. Both submittals 

concern major source permitting sections of the Wyoming regulations, and therefore, overlap 

with this submittal on GHG permitting. We respectfully request that EPA act on those 

submittals as well as this GHG SIP revision to make all ofWyoming's Prevention of Significant 

Deterioration (PSD) regulations fully approvable in the SIP. 

Since all of the necessary State reviews and approvals have been secured, I am 

submitting one paper copy and one electronic copy (in .pdf format on CD) of the revisions to the 

State Implementation Plan. The electronic copy is an exact duplicate of the paper copy. 

The following administrative materials are included in the plan submission and have been 

attached for your r~view: 

I. A copy of the stamped Certification Page by the Secretary of State indicating the 

effective date of the revisions. The Certification Page, which has been signed by the 

Governor and Director ofthe Department of Environmental Quality, documents the 

necessary legal authority under State law to adopt and implement the revised 

regulations and also provides evidence, along with the attachments listed below, that 

Wyoming followed all of the procedural requirements of the State's laws and 

constitution in conducting and completing the adoption of the plan. The rules became 

effective February 14, 2013. 

2. A July 13,2012 memorandum from John Corra, the presiding Director of the 

Department of Environmental Quality at the time, to the Governor's Office requesting 

approval to proceed with the rulemaking. 

3. An ·october 18, 2012 review from the Legislative Service Office, finding the revised 

regulations within the scope of intent of legislative authority. 

4. A copy of the notices issued by the Air Quality Division for public hearings with a 

list of newspapers and dates of publication. 
Mr. Howard Cantor 

March 8, 2013 

Page 3 

5. A copy of the Statement ofPrincipal Reasons that was adopted with the rules. 

6. A copy of the summary of comments and responses. 

7. A list of signatures ofwitnesses present at the October 5, 2012 hearing as well as a 

copy of the agenda. 

8. Two copies of the revised chapters, one copy showing where revisions were made in 

underline and strikeout and a second clean copy with all the revisions incorporated 

into a document the State believes the SIP should look like. 

9. A courtesy copy showing all Chapter 6, PSD changes made i:n the 5/11/2011 SIP 

submittal, the 5/25/2012 SIP submittal, and the current SIP submittal. This is 

provided for informational purposes only and does not represent a new SIP submittal. 

'' 

With this submission I am asking for Environmental Protection Agency approval of the 

revised State Implementation Plan for the State of Wyoming to include Chapter 1, Common 

Provisions, Section 3, Definitions, Section 7, Greenhouse gases, and Chapter 6, Permitting 

Requirements, Section 4, Prevention of significant deterioration, and Section 14, Incorporation 

by reference, ofthe Wyoming Air Quality Standards and Regulations as revised February 14, 

2013. I am also requesting that EPA expedite the review on previous submittals (5/11/2011 and 

5/25/20 12) in order to create a fully approved PSD SIP for the State of Wyoming. 

If you have any questions regarding this submittal, please feel free to contact Steven A. 

Dietrich, Air Quality Administrator, at 307-777-7391. 

Sincerely, 

Todd Parfitt 

Director 

Enclosures 

cc: Steven A. Dietrich, Administrator, Air Quality Division w/o enc. 

Christine Anderson, Air Quality Division w/enc. 

Jeni Cederle, Air Quality Division w/enc. 

Carl Daly, EPA Region 8 w/o enc. 

Kathy Ayala, EPA Region 8 w/o enc. 

Steven Pratt, EPA Region 8 w/o enc.