ILLINOIS ENVIRONMENTAL PROTECTION AGENCY 1021 NoRTH GRAND AVENUE EAST, P.O. Box 19276, SPRINGFIELD, ILLINOIS 62794-9276- I 217) 782-3397

]AMES R. THOMPSON CENTER, 100 WEST RANDOLPH, Sum 11-300, CHICAGO, ll 60601 - (312) 814-6026 Roo R. BLAGOJEVICH, GovERNOR DouGLAS P. ScoTT, DIRECTOR
June 21, 2006 Cheryl Newton USEPARegion 5 77 West Jackson Boulevard (A-18J) Chicago, IL 60604-3507 Dear Ms. Newton: Enclosed you willplease find two reports and a CD whichprovides the Illinois Environmental Protection Agency's 2002 base year emissions inventories for 8-hour ozone and PM2.5 as required by Section 172(c)(3) ofthe Clean Air Act. These reports meetthe requirements to submit an emissions inventory for ozone nonattainment areas for the 2002 base yearbyJune 15, 2006. The report entitled "Illinois BaseYear Ozone Inventory for 2002" is the inventory for ozone precursors, namely carbon monoxide, nitrogen oxides andvolatile organic material. The format ofthis report is similarto previous periodic inventories submittedbyIllinois EPAunder the !- hour ozone standard. Summaries are provided for each precursor for each ozone nonattainment area (Chicago and Metro-East St. Louis), and for all ofthe other counties statewide as well. The Illinois EPAis planning apublic hearing in the near future to solicit comments on this inventory from Illinois stakeholders. Depending on the nature ofthe comments wereceive, we may need to supplement the information provided in this submittal. The report entitled "Illinois Base YearParticulateMatter Inventory and Haze for 2002" is the particulate matterinventory. Illinois EPArecognizes this report is not due at this time, but since much ofthe information and source categories in this report are similarto the ozoneinventory, Illinois EPA decided to compile and submitboth inventories at the same time. Similarto the ozone report rnentioned above, summaries arc provided for eachparticulate matter nonattaimnent area (Chicago and Metro-East St. Louis) and for all remaining counties in Illinois as well. Since this report is not yet due, please considerthis report to be a draft for yourreview and comment. The Illinois EPAwill finalize this report in the future pending final guidance from U.S. EPA and comments received from Illinois stakeholders. The enclosed CD containsthe Adobe Acrobat versions ofthe reports. The CD also contains four Access databases (point, area, on-road mobile and off-road mobile) inNEI format. This datais provided to give access to the entire data set used to compile the reports. Some additional reports have beenincludedin these databases (e.g., point source emissionsbysource) since the magnitude ofthe dataprecludesprinting the information.

ROCKFORD- 4302 North Main Street, Rockford, IL 61103

- {815) 987-7760 ° DES PLAINES- 9511 W. Harrison St., Des Plaines, IL 60016- (847) 294-4000 ELGIN- 595 South State, Elgin, IL 60123- (847} 608-3131 <> PEORIA- 5415 N. University St., Peoria, IL 61614- (309) 693-5463 BUREAU OF LAND- PEORIA- 7620 N. University St., Peoria, IL 61614- (309) 693-5462 ° CHAMPAIGN- 2125 South First Street, Champaign, IL 61820- (217) 278-5800 SPRINGFIELD- 4500 S. Sixth Street Rd., Springfield, ll 62706- (217) 786-6892 "' COLLINSVIl.LE- 2009 Mall Street, Collinsville, IL 62234- (618) 346-5120 MARION- 2309 W. Main St., Suite 116, Marion, IL 62959- (618) 993-7200 PRINTED ON RECYCLED PAPERIfyou have any questions, please contact Buzz Asselmeier ofmy staff(phone: 217-782-0285 or email: buzz.assselmeier@epa.state.il.us). Sincerely, 

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## /if!-{~>1 Rob Kaleel, Manager Air QualityPlanning Section Enclosures

cc: John Mooney, U.S. EPA Region 5 (w/o attachments) John Summerhayes, U.S. EPA Region 5 (w/o attachments)