### IDEM INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT We ProtectHoosiers andOurEnvironment. Mitchell E. Daniels Jr. 100 North Senate Avenue Governor Indianapolis. Indiana 46204 (317) 232-8603 Thomas W Easterly Toll Free (800) 451-6027 Commissioner www.idem.lN.gov

Mr. Bharat Mathur Acting Regional Administrator U.S. Environmental Protection Agency Region V 77 West Jackson Boulevard Chicago, IL 60604-3950

Dear Mr. Mathur: 3-6-2009

Re: Technical Addendum for the Request for Redesignation and Maintenance Plan for Fine Particle Attainment in the Southwestern IndianaNonattainment Area

The Indiana Department ofEnvironmental Management (IDEM) has prepared this technical addendum to the Request for Redesignation and Maintenance Plan for Fine Particle Attainment in the Southwestern Indiana Nonattainrnent Area (Redesignation Request and Maintenance Plan) to incorporate 2008 quality assured ambient air quality monitoring data for fine particles. The final Request for Redesignation and Maintenance Plan was submitted to U.S. EPA on April 3, 2008. The table and charts listed below show the updated quality assured ambient air quality monitoring data for fine particles through 2008. A map ofthe Southwestern Indiana Fine Particle Nonattainment Area is also included for reference. ANNUAL SITE**DESI~N** ANNUAL MEANS VALUES SITE ID SITE NAME 2004 2005 2006 2007 2008 04-06 05-07 06-68

180370004 JasperSports Complex Monitor Began 2/01/06 13.64 14.61 12.10 13.6 I 14.1 2 13.5 180370005 JasperGolf Monitor Began 2/01/06 13.78 14.92. 12.53 13.8' 14.4 2 13.7 180372001 Jasper PostOffice 14.42 16.92 13.54 14.26 12.93 15.0 14.9 13.6 180510012 Oakland City Monitor Began 1/18/08 11.33 11.3 I 181630006 Evansville Civic Center 13.23 16.49 13.72 13.91 12.58 14.5 14.7 13.4 181630012 Evansville Mill Road 13.46 16.29 14.05 14.23 12.70 14.6 14.9 13.7 181630016 University ofEvansville 13.68 16.67 14.15 14.21 12.53 14.8 15.0 13.6 lOne Year ofData 2Two Years ofData Incomplete Data

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### 0Mr. Mathur 

### Page 2 of5 Figure 1 Southwestern Indiana Nonattainment Area Legend PM MoniiorDesign Values 2008·2008 (uglm3)

@ Monitor BelowAnnual PM 2.5 Standard <= 15,04 \III MonitorAbove Annual PM 2.5 Standard >=15.05 PM 2.5 Counties 

# o Attainmant 

## o Nonatfainment Sullivan



### Chart 1 oy

Greene

Davless Martin

13.5 13.6 , • Dubois 13.7 Monroe

Lawrence

Orange

Crawford

Southwestern Indiana NonattainmentArea Annual Means 20.00**-~._-~"~",~,--"-,-------,--_.--,-~._.--~---------,----------,--------~._'¥---_._--_** 

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# .... 15.00 (\I) 

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### .... 10.00 

# ..... ::s 5.00 0.00 2004 2005 2006 2007 2008 

## I -+- Southwestern Indiana Monitors -Annual PM 2.5 StandardMr. Mathur 

### Page 3 of5 

### Chart2 ------------,-----------,---------,------------------------------, Southwestern Indiana NonattainmentArea 2006-2008 Design Values
15.5 14.5 C") 13.5 ::l 12.5 11.5 10.5 

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### = m > 0**~a::** m= 1fj:2**It,i%1i~1** 2006-2008
- Annual PM 2.5 Standard


### Chart 3 Southwestern Indiana Nonattainment Area Three-Year Design Values 15.5 +----------------------------------:-1

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### ..., 0 _2005-2007 CJ 2006-2008 - Annual PM 2.5 Standard 10.5· 14.5 +-------=--,-------

12.5 11.5



## I 2004-2006 C") 13.5 ::l16.0 Mr. Mathur Page 4 of5 

### Chart 4 Southwestern Indiana Nonattainment Area Three-Year Design Values



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## II 12.5 +------------------------------------il 12.0 -I--------------r-------------.,.-------------l 2004-2006 Jasper Sports Complex Oakland City 2005-2007 2006-2008 Jasper Golf Jasper Post Office Evansville Civic Center - Evansville Mill Road
-+- Universityof Evansville - Annual PM 2.5 Standard

Quality assured ambient air quality monitoring data for fine particles for the years 2004 through 2008 (three consecutive design value periods) demonstrate that the Southwestern Indiana Area has attained the annual NAAQS for fine particles and is eligible for redesignation. The 2006-2008 monitoring data for the Southwest IndianaArea is complete (Le. no missing data.) United States Environmental Protection Agency and Lake Michigan Air Directors Consortium modeling for future year design values consistently show that existing and future improvements in airquality in the region due to declining emissions resulting from permanent and enforceable control measures will ensure continued compliance (maintenance) with the standard. FurthelIDore, because this area is subject to significant transport ofpollutants, significantregional nitrogen oxides (NO

### x) and sulfur dioxide (S02) reductions will ensure continued compliance (maintenance) with the standard with an increasing margin ofsafety. Therefore, the Southwestern Indiana Area is eligible for its air quality status to be classified consistent with other counties in the nation that measure air quality that meets the annual NAAQS for fine particles. IDEM believes that this technical addendum in conjunction with the previously submitted Redesignation Request and Maintenance Plan satisfies Indiana's obligation under Section 172(c) ofthe Clean Air Act to demonstrate how the area attained, and will continue to attain, the NAAQS for fine particles by the attainment date.Mr. Mathur Page 5 of5 Therefore, IDEM requests that U.S. EPA proceed with final review and approval ofthe Redesignation and Maintenance Plan for Fine Particle Attainment in the Southwestern Indiana Nonattainment Area. Ifyou have any questions or need additional information, please contact Mr. ScottDeloney, Chief, Air Programs Branch, at (317) 233-5694 or sdeloney@idem.IN.gov, or Ms. Christine Pedersen, Chief, Air Planning Section, at (317) 233-5684 orcpederse@idem.IN.gov.

nt Commissioner

DM/sd/skr
cc: John Summerhays, U.S. EPA Region 5 John Mooney, U.S. EPA Region 5 Cheryl Newton, U.S. EPA Region 5 Pat Morris, U.S. EPA Region 5 Scott Deloney, IDEM Christine Pedersen, IDEM