## ILLINOIS ENVIRONMENTAL PROTECTION AGENCY 1021 NO R TH GRAND A V E N UE EAST, P
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. B OX 19276, SP RI N GFIE L D, ILLINOIS 62794-9276 • (217) 782-2829 PAT QUINN, GOVERNOR LISA BONNETT,**DIRECTO !r** **~;:;-:;:;::--;:::::;-;:--:::-:----**

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# w**~~m** 217/785-4140 217/7 82-9143 (TDD) August 18, 2014 

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## 2014 Certified Mail 

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REGI ONAL ADMINISTRATOR Return Receipt Requested 7012 0470 0001 3000 9378 Dr. Susan Hedman Regional Administrator U.S. Environmental Protection Agency, Region 5 77 West Jackson Boulevard (R-19J) Chicago, IL 60604-3507 Re: State Implementation Plan Revision Dear Dr. Hedman: Pursuant to Section 1 69A ofthe Clean Air Act ("CAA'') (42 U.S
.C. 

### § 7491) and Section 4 ofthe Illinois Environmental Protection Act (415 ILCS 5/ 4 ) , the Illinois Environmental Protection Agency ("Agency") submits the enclosed revision to the Illinois State Implementation Plan ("SIP"). This revision has been prepared as a result ofthe Illinois Pollution Control Board ( " Board") granting a variance to Midwest Generation, LLC ("Midwest Generation" )
. The Agency requests that the variance be approved as a revision to the Illinois SIP
. On April4 , 2013, the Board granted Midwest Generation, with power plants in Cook, Will, Tazewell , and Lake Counties , a variance from portions ofthe Illinois Combined Pollutant Standard ("CPS " )
. Midwest Generation, LLC v. Illinois Environmental Protection Agency, PCB 13-024
. Specifically, the Board granted Midwest Generation relief from the system-wide sulfur dioxide ("S0 2 ") emission rates set forth in 35 Ill
. Adm
. Code 225
.295(b) from January 1, 2015, to December 31, 2016 , and with respect to its Waukegan Generating Station, relief from the requirement set forth in 35 Ill. Adm
. Code 225
. 296(a)(2) regarding installation of certain S02 control equipment on Waukegan Unit 8 by December 31 , 2014; the Board granted Midwest Generation a five-month delay in such requirement, to May 31, 2015
. The portions of the CPS referenced above are approved rules in the Illinois SIP and were submitted to address the visibility protection requirements of Section 169A o f the CAA, 42 U.S.C. § 7491 , and the Regional Haze Rule, as codified in 40 CFR § 51.308
. See, 77 Fed
. Reg. 39943 (July 6, 2012). As Midwest Generation sought relief from these provisions of the CPS and such relief was granted by the Board, the variance must be submitted for approval as a SIP revision addressing the visibility requirements under the CAA and the Regional Haze Rule
.

4302 N. Main St., Rockford,ll6 11 03 (815 )987-7760 595 S. Stat e , Elgin, l l 60123 (847) 608-3131 2 125 S
. F i rst St., Chompaign,ll 61820 (217 ) 278

- 5800 2009 Mall St. , Collin sville, ll 6223 4 (6 1 8 )3 46

- 5120 9511 Harrison S t. , D e s Plaines,ll60016 (847) 294·4000 5 407 N
. University St., Arbor 11 3 , P e oria, ll616 1 4 ( 309 )693

- 5462 2309 W
. Main St., Suite 116, Marion, ll 62959 (6 1 8 )993-72 00 100 W
. Randolph, Suite 1 1 -300, Chicago, ll 6 060 1 (312)814-6026 PlEASE P RI N T ON R ECYCUD P APERAs evident from the approval ofIllinois' Regional Haze plan, the CPS provides emission reductions well in excess of simply implementing Best Available Retrofit Technology ("BART") on subject units. Taking into account the variance granted to Midwest Generation, the reductions from Illinois' plan continue to provide significantly greater emission reductions for S02 than conservative defmitions of BART for the BART-subject units. (See Agency's Technical Support Document for SIP Submittal, enclosed). The Agency provided public notice ofthe SIP revision, offering the public an opportunity to comment and to request a public hearing. The Agency did not receive a request for a public hearing, and therefore no hearing was held. Likewise, the Agency did not receive any public comments. In order to assist with your review of this plan revision submittal, the following documents are enclosed (one hard copy and one exact duplicate electronic copy on discs): I) Midwest Generation's Petition for Variance (November 30, 2012) 2) Agency's Appearance and Certification of Publication (December 13, 2012) 3) Board Order Accepting Petition for Hearing (December 20, 2012) 4) Notice ofBoard Hearing (December 21, 2012) 5) Board Certificate of Publication I 6) Board Certificate ofPublication II 7) Board Certificate ofPublication III 8) Board Certificate ofPublication IV 9) Board Certificate ofPublication V 10) Board Certificate ofPublication VI 11) Agency's Recommendation (January 10, 2013) 12) Transcript of Hearing (January 29, 2013) (partial--full transcript omitted) 13) Hearing Officer Order Verifying Hearing Held (January 31, 2013) 14) Final Board Order Granting Variance (April4, 2013) 15) Concurring Opinion by Board Member Glosser (April4, 2013) 16) Midwest Generation's Certificate of Acceptance (May 17, 2013) 17) Notice ofPublic Infonnation, 37 Ill. Reg. 15552 (September 27, 2013) 18) Verification ofNo Public Hearing (November 4, 2013) 19) Agency's Technical Support Document for SIP Submittal The complete docket for the rulemaking is available on the Board's website at http://www .ipcb.state.il.us/COOLlexternal/CaseView.aspx?referer=results&case= 1453 6. If further information is required, please contact Dana Vetterhoffer at 217/782-5544
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Director 

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