Department
of Environmental Quality To protect, conserve and enhance the quality of Wyoming's environment for the benefit of cun-ent and future _qenerations. Matthew H. Mead, Governor

Todd Parfitt, Director To: From: Subject: Date: Priority: Honorable Matthew H. Mead, Governor **~** Todd Parfitt, Director, Department of Environmental Quality

\ Proposed Rules for Chapters
4, 5, 6 and 11 (R-22) Department of Environmental Quality

,Air Quality Division February 21,2013 Summary: HIGH- Deadline for response
is March 7, 2013 Notice of Agency Rulemaking The Air Quality Division (Division)

is proposing revisions
to the Wyoming Air Quality Standards and Regulations listed above. The following

is abrief summaryof the proposed rule changes: • Annual updates to New Source Performance Standards, National Emission Standards for Hazardous Air Pollutants, and the National Acid Rain Program to be adopted by reference from the 2012 Code of Federal Regulations (CFR). lfthe State does not adopt the most recent versions of these sections by reference, the rule still applies at the federal level. Adopting these national standards into the State rules allows for State implementation
of the rules. • Updates to sections affecting the oil and gas industry to be adopted by reference from the August 16, 2012 Federal Register

.The State has opted to adopt by reference from the Federal Register asthe codification of the final rule will not occuruntil July 2013. This allows State implementation
of the rule to begin expeditiously. • Updates to regulations covering hospital/medical/infectious waste incinerators
sothat State regulations match federal guidelines. • Updates to Prevention of Significant Deterioration (PSD) regulations
sothat State regulations match federal regulations. Revised re gulations arenomore stringent than federal regulations and allow Wyoming
to maintain primacy overthe program. PSD updates include: o Revisions that specifically list newminor source baseline dates for fine particulate. oRevised federal language onthe treatment of condensable particulate matter. o Clarifies when the maximum allowable increment

is exceeded for particulate matter. • Adoption of National Emission Standards for Hazardous Air Pollutants (N E SHAP) for coal and oil-fired electric generating units (EGUs). Should national litigation orEPA decisions result in modification
of this rule, the State will adopt amended rules to maintain consistency with federal regulations. The proposed revisions canbe seenin the attached draft rules. Specific information onthe changes canbe found in the Statement ofPrincipal Reasons (SOPR). Chapter

6 ,Sections

4 and 14 involve changes to the State Implementation Plan (SIP). The Wyoming Air Quality Herschler Bu il ding

·1 22 West 25th Street

· Cheyenne, WY 82002

·h ttp

: //deq.state.wy

.us ADMINIOIJl RlACH ABANDO

I D MINI:S AIR QUA L
I I Y **INDUSTI~I/1L**lliNG LAND QUAl

i TY S LID
f ,HAZ

**~**l E W A TI:R (/U A IITY (301\ 1/1-1/SH t:i()l\1//

t1-1' (lll!) 717 /:>Gl 1"!07)

I 7 /11>'

) 1301) 17/"'" '

.i"i07) ll '7 2

I •07) IIi 1/P:i F/\ 777·7632 FAX 777- f )-10? FAX 777.'\hlh r,'\Y T 1.r.o71 r:/\v "111 .::QLA
r:1\ ..,,..,,1.,., cAv ..,,..,,.n..,Advisory Board met in Cheyenne, Wyoming on January 16, 2013, and recommended that these revisions be taken forward through the rulemaking process

. Agency Contact Name: Agency Contact Phone: Agency Contact Email: Christine Anderson 307-675-5624 tina.anderson@wyo.
gov Govemor's

**e**Options (to be completed by Governor's Office): **-- "--** **}Agency**may proceed. _____Delay public comment and set up meeting with **atur ~** 

J-1 -15 If no responsehas been received by the 1 O'h working day
,the agencywill proceed with these rules.