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! To protect, conserve and enhance the quality of Wyoming's env/ronrn_e[l.t for the benefit ofcurrent and future qenerations. Matthew H. Mea'a,**.Gove~nor** ':. · · · Todd Paliitt.Director

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. -**~** \: " • ' ·. . ,.· ·:. t : • Section 3 ofChapter 1, Common·Provisions;

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### thed~fiAit1qr of:'. ·. : "Greenhouse gases (GHGs)." A new Section 7,**Gr~eriliouse** .gases;AY:as added

### to require the: permitting ofsources ofgreenhouse gases, exempt

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## fromgreenhouse gas:**·~** :t. permitting, and provide several offramps for greerihouse gas perinitting.:. 'Offramp language wa;s' ,' not included in the SIP submittal. · ·'

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Section 4 ofChapter 6, Permitting Requirements, was modified to allowfor

### the' , ;:·· permitting ofgreenhouse 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 ofpermitting 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 ofgreenhouse gas-related regulations that came after July 1, 

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Herschler Building · 122 West 25th Street · Cheyenne, WY 82002 · http://deq.state.wy.usMr. Howard Cantor March 8, 2013 Page 2

Afterreviewing 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 ofthe necessary legislation which allows the State ofWyoming to regulate GHGs and submit those regulation changes to the Environmental Protection Agency. Upon completion ofthis legislation, the rule revisions were transmitted to the Secretary ofState's Office, and became effective on February 14,2013.
In the process ofpreparing the SIP submittal for GHG permitting provisions, it quickly became apparent thatthere are two prior Wyoming SIP submittals involvingthe same State regulations which require prompt EPA action as well. The first ofthese submittals was received by EPA on5/11/2011, and the second submittal was received on 5/25/2012. Both submittals concern major source permitting sections ofthe Wyoming regulations, and therefore, overlap with this submittal on GHGpermitting. We respectfully request that EPA act onthose submittals as well as this GHG SIP revision to make all ofWyoming'sPrevention ofSignificant Deterioration (PSD) regulations fully approvable in the SIP. Since all ofthe necessary State reviews and approvals have been secured, I am submitting one paper copy and one electronic copy (in .pdfformat on CD) ofthe revisions to the State Implementation Plan. The electronic copy is an exact duplicate ofthe paper copy. The following administrative materials are included in the plan submission and have been attached for your**r~view:** I. A copy ofthe stamped Certification Page by the Secretary ofState indicating the effective date ofthe revisions. The Certification Page, which has been signed by the Governor and Director ofthe Department ofEnvironmental Quality, documents the necessary legal authority under State lawto adopt and implement the revised regulations and also provides evidence, along with the attachments listed below, that Wyoming followed all ofthe procedural requirements ofthe State's laws and constitution in conducting and completing the adoption ofthe plan. The rules became effective February 14, 2013.
2. A July 13,2012 memorandum from John Corra, the presiding Director ofthe Department ofEnvironmental 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 ofintent oflegislative authority. 4. A copy ofthe notices issued bythe Air Quality Division for public hearings with a list ofnewspapers and dates ofpublication. 

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### IMr. Howard Cantor March 8, 2013 Page 3

5. A copy ofthe Statement ofPrincipal Reasons that was adopted with the rules.
6. A copy ofthe summary ofcomments and responses. 7. A list ofsignatures ofwitnesses present at the October 5, 2012 hearing as well as a copy ofthe agenda.
8. Two copies ofthe 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, andthe current SIP submittal. This is provided for informational purposes only and does not represent a new SIP submittal. '' Withthis submission I am asking for Environmental Protection Agency approval ofthe revised State Implementation Plan for the State ofWyoming to include Chapter 1, Common Provisions, Section 3, Definitions, Section 7, Greenhouse gases, and Chapter 6, Permitting Requirements, Section4, Prevention ofsignificant deterioration, and Section 14, Incorporation by reference, oftheWyoming Air Quality Standards and Regulations as revised February 14, 2013. I am also requesting thatEPA expedite the review onprevious submittals (5/11/2011 and 5/25/2012) in orderto create a fully approved PSD SIP for the State ofWyoming.
Ifyou 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 Divisionw/enc. Carl Daly, EPARegion 8 w/o enc. Kathy Ayala, EPARegion 8 w/o enc. Steven Pratt, EPA Region 8 w/o enc.