VIA FEDERAL EXPRESS AND ELECTRONIC MAIL 

Administrator Lisa P. Jackson 

U.S. Environmental Protection Agency 

Room 3000, Ariel Rios Building 

'1200 Pennsylvania Avenue, N.W. 

Washington, D.C. 20460 

jackson .lisaepa.qov 

Assistant Administrator Gina McCarthy 

U.S. Environmental Protection Agency 

Office of Air and Radiation 

Ariel Rios Building, Mail Code: 6101A 

1200 Pennsylvania Avenue, N.W. 

Washington, D.C. 20460 

mccarthy.qinacjepa.qov 

RE: Request for Reconsideration and Stay of Final Rule "Air Quality 

Designations for the 2008 Ozone National Ambient Air Quality Standards for 

Several Counties in Illinois, Indiana, and Wisconsin", Docket ID No. EPA—HQ—

OAR-2008-0476 

Dear Administrator Jackson and Assistant Administrator McCarthy: 

The Indiana Department of Environmental Management (IDEM) respectfully 

requests that the U.S. Environmental Protection Agency (U.S. EPA) grant reconsideration 

and stay the effectiveness of the portion of U.S. EPA's final rule published on June 11, 

2012, titled "Air Quality Designations for the 2008 Ozone National Ambient Air Quality 

Standards for Several Counties in Illinois, Indiana, and Wisconsin" that applies to Lake 

and Porter counties, Indiana. This Petition for Reconsideration is filed pursuant to 

Section 307 of the Clean Air Act, 42 U.S.C. § 7607. IDEM requests reconsideration 

based on U.S. EPA's failure to fully consider and provide adequate responses to the 

record before the agency in this rulemaking. 

U.S. EPA proposed designation boundaries under the 2008 ozone standard for 

Indiana via letter to Governor Daniels dated December 9, 2011. Indiana was in 

agreement with U.S. EPA's proposed designation boundaries. However, on January 31, 

2012, U.S. EPA issued a second letter to Governor Daniels updating its boundary 

1&'c yc/cd l'aper ® An Equal Opportunity Eniployer I'Iease Recycle )
IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008--0476 

August 10, 2012 

Page 2. 

recommendations to include Jasper, Lake, and Porter counties in Indiana as part of the 

Chicago nonattainment area. U.S. EPA based the revised proposal on 2011 data certified 

by the State of Illinois on December 7, 2011, which contained a monitored violation at the 

Zion, Illinois monitor. U.S. EPA proposed to designate Jasper, Lake, and Porter counties 

nonattainment despite the fact that all five monitors within these Indiana counties 

measure some of the lowest ozone concentrations within the state, and maintain air 

quality values well below the standard. Indiana did not agree with U.S. EPA's revised 

proposal, and on April 13, 2012, the state submitted a detailed rebuttal to the record that 

included modeling, meteorological, and monitoring data analyses to support the 

designation of Jasper, Lake, and Porter counties as attainment or 

attainment/unclassifiable under the 2008 ozone standard. On May 31, 2012, U.S. EPA 

signed and announced its final designation action, which included Lake and Porter 

counties as part of the greater Chicago nonattainment area. 

In the May 31, 2012 final action, U.S. EPA agreed with the information provided by 

Indiana on April 13, 2012, as it pertained to Jasper County, and that Indiana county was 

rightfully designated attainment/unclassifiable. Based on the information contained within 

its record for the May 31, 2012 final action, it is clear that U.S. EPA reviewed and 

considered the information provided by IDEM as it related to Jasper County. However, it 

does not appear that U.S. EPA gave fair consideration to the detailed information specific 

to Lake and Porter counties, Additionally, U.S. EPA failed to address several of the 

critical points and issues provided to the record by Indiana concerning this matter. 

U.S. EPA's responses to IDEM's comments on this rulemaking were deficient and 

not in accordance with the law. U.S. EPA should reconsider its designation of Lake and 

Porter counties in Indiana as nonattainment of the 2008 ozone standard because the 

agency failed to fulfill its obligations in responding to Indiana's comments on the 

proposal. According to U.S. EPA's own statements, the agency was to apply a fivefactor1 analysis to determine whether areas should be designated as nonattainment2. 

More importantly, while U.S. EPA might begin with a "presumptive" boundary of a 

combined statistical area (GSA) for determining nonattainment areas, the "framework for 

area-specific boundary analysis" was to rest on the agency's analysis of the five-factors3. 

Indiana complied with U.S. EPA's proposed framework for specifying 

nonattainment area boundaries for the Chicago-Naperville, IL-IN-WI CSA ("Chicago 

GSA"), and produced in response to U.S. EPA's revised proposal, a detailed examination 

'As U.S. EPA noted in its Addendum to Responses to Significant Comments on the State and Tribal Designation 

Recommendations for the 2008 Ozone National Ambient Air Quality Standards (NAAQS) for Section 3.2.5.1. ChicagoNaperville, IL-IN-WI Area, in footnote 2, the agency originally proposed nine factors, but "combined several closely 

related factors" into the resultant five-factor analysis. 

2 Letter from Robert J. Meyers, Principal Deputy Assistant Administrator, U.S. EPA Office of Air and Radiation, to 

Regional Administrators, Regions l-X (Dec. 4, 2008), Attachment 2; Addendum to Responses to Significant Comments 

on the State and Tribal Designation Recommendations for the 2008 Ozone National Ambient Air Quality Standards 

(NAAQS) for Section 3.2.5.1. Chicago-Naperville, IL-IN-WI Area (May 2012), page 7 and hereinafter referenced as, 

"U.S EPA Addendum"). 

Letter from Robert J. Meyers to Regional Administrators, Attachment 2,
IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 3. 

of the five factors that supported excluding all of Indiana's counties, Lake, Porter, and 

Jasper, from the proposed nonattainment area. U.S. EPA is given great deference by 

courts when it reaches reasoned conclusions in its rulemakings; however, it also has "an 

obligation to deal with newly acquired evidence in some reasonable fashion" during this 

process Catawba County v. EPA, 571 F.3d 20, 45 (D.C. Cir. 2009); see also U.S. v. 

Novia Scotia Food Products Corp., 568 F.2d 240, 252 (2nd Cir. N.Y. 1977) ("It is not in 

keeping with the rational process to leave vital questions, raised by comments which are 

of cogent materiality, completely unanswered.") This is where U.S. EPA failed with 

respect to comments submitted by Indiana. 

Indiana's comments regarding this matter spoke to each of the five factors for 

Lake, Porter, and Jasper counties. For example, Indiana raised the serious issue 

regarding Illinois' noncompliance with its state implementation plan (SIP) by altering its 

vehicle emissions testing (VET) program. The comments on this topic were far-reaching, 

but included that no Indiana counties should be included in the Chicago CSA because 

the largest contributor to the monitored violation was the State of Illinois, and Indiana as a 

result of geographical and political boundaries (one of the five factors) had no authority to 

correct this issue to ensure attainment in the CSA 4 . U.S. EPA dismisses this argument 

by stating "our analysis supports including Lake and Porter counties as part of the 

designated nonattainment area because they contribute to the violation of the ozone 

NAAQS at the Zion monitor". There is no consideration given, at any point, in the U.S. 

EPA Addendum to Indiana's true concerns with Illinois' VET program or how this would 

affect the five-factor analysis, U.S. EPA's utter lack of response to this cogent and 

material comment is indicative of the agency's approach to IDEM's comments as a 

whole.

Similarly, IDEM's explanation of how Pickaway and Ross counties in Ohio, Point 

Coupee Parish in Louisiana, Roane County in Tennessee, and Berks and Lancaster 

counties in Pennsylvania were introduced as evidence of disparate treatment given to 

Lake, Porter, and Jasper counties in Indiana 5 . For every one of the counties identified by 

IDEM as receiving disparate treatment from U.S. EPA, IDEM asked for the agency to 

consider their ramifications not just on Jasper, but also Lake and Porter counties. 

However, in the U.S. EPA Addendum, U.S. EPA, after identifying IDEM's comments on 

these other counties, simply stated, "Since we have concluded that Jasper County should 

be designated as unclassifiable/attainment based on updated information recently 

submitted by the State of Indiana, any concerns about whether a designation of Jasper 

County would be inconsistent with actions for other areas is moot." 6 . Clearly, there was 

no examination of the work done by IDEM for Jasper County, but more glaring, there is 

no discussion of the comment with respect to Lake and Porter counties. Because U.S. 

"See, e.g., U.S. EPA Addendum at page 9, 14. 

Indiana 120-Day Response to U.S. EPA's Revised Designations for the 2008 8-Hour Ozone National Ambient Air 

Quality Standard (Apr. 13, 2012), Enclosure 1, pages 31-37. 

6 U.S. EPA Addendum, page 9 (emphasis added).
Chicago-NE IL Air Quality Profile 

Zion Monitor Value

u Total SIP-Authorized Northeast Illinois Emissions 

U Unauthorized Northeast Illinois Vehicle Emissions 

Source: US. EPA 2008 National Emissions Inventory; U.S. EPA Air Quality System; IDEM Tailpipe Study c. 2009

IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 4. 

EPA's responses to IDEM's comments were deficient and not in compliance with law, 

IDEM requests that the agency reconsider this rulemaking. 

As IDEM demonstrated in its April 13, 2012 rebuttal to U.S. EPA's proposed 

nonattainment boundaries, the primary cause of the less than I % violation of the 

standard at the Zion, Illinois site is a 2007 action by the State of Illinois that exempted all 

pre-1996 vehicles from its vehicle emission testing (VET) program. The VET program 

would have reduced emissions of volatile organic compounds (VOC) and nitrogen oxide 

(NO) emissions, both of which form ozone. If these vehicles had continued to be tested 

and repaired as needed, there is no doubt that the Zion, Illinois monitor would have 

measured air quality below the standard consistent with the other 20 monitors in the 

Illinois and Indiana portions of the CSA. 

The chart below demonstrates how the Zion, Illinois monitor barely exceeds the 

standard. The potential vehicle VOC and NO emissions reduction from the unauthorized 

testing program change are larger than the amount of ozone that exceeded the standard. 
IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 5. 

Illinois never received approval from the U.S. EPA to make this change to its 

vehicle emission testing program; meaning that the change was unauthorized and 

contravenes Illinois' federally mandated State Implementation Plan (SIP) as well. This is 

an issue that the U.S. EPA has failed to address from a regulatory perspective, as well as 

within the record concerning this matter. IDEM requests that U.S. EPA address this issue 

and reconsider the designation of Lake and Porter counties as nonattainment as a result. 

U.S. EPA has indicated on multiple occasions that data provided by Illinois and 

Wisconsin demonstrate that Lake and Porter counties contribute to exceedances 

measured at the Zion, Illinois site, However, the data provided by Illinois and Wisconsin 

are not specific to the Zion monitor site, nor are the data specific to the exceedance days 

that occurred during the period representing a violation of the standard (2009 through 

2011), IDEM expressed concern about this in the record, and provided meteorological 

data and analysis that was specific to the Zion monitoring site for the four highest days of 

2009, 2010, and 2011. Additionally, IDEM's data and analysis included the same level of 

information for Lake and Porter counties (where the emissions of concern originate) for 

the same days of 2009 through 2011. IDEM's data and analysis does not conclusively 

demonstrate whether Lake and Porter counties consistently contribute to ozone 

concentrations measured at the Zion site. The data provided by Illinois and Wisconsin 

that U.S. EPA relied upon did not go beyond the 2008 ozone season, and was not 

specific to the Zion monitoring site or the exceedance days that led to a violation of the 

standard. Although IDEM's data and analysis is much more relevant to the matter than 

that provided by Illinois and Wisconsin to U.S. EPA in early 2009, U.S. EPA cites the 

Illinois and Wisconsin information as more relevant in its final action. Furthermore, U.S. 

EPA cited earlier work conducted by the Lake Michigan Air Directors Consortium 

(LADCO) in its final action to support its conclusion that Lake and Porter counties 

contributed to the monitored violation at the Zion site. However, the LADCO work U.S. 

EPA cited is not specific to the Zion monitor or the applicable time period. Additionally, 

due to the significant reduction of nitrogen oxides that has occurred incrementally since 

2004, photochemistry and precursor sensitivity has changed substantially within the 

modeling domain. Therefore, consideration of any modeling, meteorological, or 

monitoring data analysis must focus on the most recent available data in order to be 

useful. IDEM contends that U.S. EPA has not adequately demonstrated that Lake and 

Porter counties contributed to the monitored violation at the Zion site, nor does the most 

current available data present conclusive evidence that Lake and Porter counties 

consistently contribute to elevated ozone concentrations a the Zion site. 

In its final action, U.S. EPA acknowledges the May 1, 2012, certification of 

Wisconsin's 2011 monitoring data that includes a monitored violation of the standard at 

the Chiwaukee Prairie site in Kenosha County, Wisconsin. U.S. EPA states that its 

inclusion of portions of Kenosha County within the nonattainment area is not based on 

the monitored violation because the agency did not have sufficient time to properly 

evaluate the data and associated impacts. 8However, since the Chiwaukee Prairie site is 

U.S. EPA Addendum at footnote 4.
IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 6. 

located within the boundaries of the nonattainment area defined by U.S EPA, it 

represents the controlling site for the entire nonattainment area at the time of designation. 

Therefore, the nonattainment boundary should have been evaluated with careful 

consideration given to what is causing and contributing to ozone concentrations 

measured at the Chiwaukee Prairie site. Due to the fact that the Chiwaukee Prairie site 

possesses the highest value within the nonattainment area, and has traditionally 

represented the highest ozone monitored values for the region historically, this site will be 

the central focus of all planning requirements going forward. U.S. EPA's failure to 

properly evaluate cause and contribution for this site, while at the same time relying on it 

to further support its perfunctory conclusion, has resulted in undue and disproportionate 

regulatory burden for Lake and Porter counties, Indiana. 

Wisconsin's certification of the 2011 monitoring data prior to U.S. EPA's final 

action, and U.S. EPA's admitted recognition of that 2011 data, presents critical 

implications that were not part of the record for IDEM to properly evaluate and comment 

on in advance of U.S. EPA issuing final designations. Additionally, U.S. EPA's recognition 

of the significance of the Chiwaukee Prairie site and admission that the agency was not 

analyzing contribution to the violation highlights the U.S. EPA's indefensible deficiency in 

its disregard for the thorough analysis provided by IDEM of Milwaukee's contribution to 

the Chicago CSA nonattainment area. Finally, the manner in which U.S. EPA codified 

the nonattainment boundaries, which includes the Chiwaukee Prairie monitoring site, 

further supports Indiana's claim that the inclusion of Lake and Porter counties within the 

Chicago nonattainment area is arbitrary and capricious. This is supported by the fact that 

U.S. EPA assessed Lake and Porter counties in a fashion inconsistent with how other 

contributing areas were assessed, and later excluded, and the fact that counties that 

contribute significantly more than Lake and Porter counties to the Chiwaukee Prairie site 

were not evaluated but were excluded from the nonattainment boundary. 

IDEM provided U.S. EPA with reputable regional modeling information that 

demonstrated that Milwaukee contributed equally or greater than Lake and Porter 

counties to the Zion monitor site in Northeast Illinois. Furthermore, IDEM and LADCO 

had previously provided U.S. EPA with similar modeling that shows that Milwaukee is a 

much larger contributor to the Chiwaukee Prairie, Wisconsin monitor site than Lake and 

Porter counties. Not only did U.S. EPA not address this critical point in its final action, the 

agency's final action exacerbated IDEM's concern. As a result of there being monitored 

violations in both Illinois and Wisconsin's portions of the nonattainment area at the time of 

designation, the exclusion of Milwaukee becomes even more critical. According to U.S. 

EPA policy, Indiana is not eligible for redesignation until all monitor sites in Illinois and 

U.S. EPA's recognition of timing constraints is also noteworthy because, since its April 13, 2012 submission, IDEM 

has argued that U.S. EPA's acceptance of last-minute monitoring data, coupled with its artificial, self-imposed 

deadline for determining the nonattainment boundaries for the Chicago CSA have led to less-than-rigorous analysis 

of contribution to the nonattainment monitored at the Zion site. As this Petition to Reconsider describes, U.S. EPA's 

terse and rushed analysis has resulted in a flawed rulemaking.
ID EM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 7. 

Wisconsin's portion of the area attain. This means that Lake and Porter counties are 

subject to additional regulation and further emission reductions until attainment is 

measured throughout the nonattainment area, including in Kenosha County, Wisconsin. 

However, the Milwaukee area is not subject to any regulatory burden, planning 

obligations or liability, even though its contribution to the Kenosha County site is 

equivalent to that of Lake and Porter counties. The data that U.S. EPA relied on to 

evaluate Lake and Porter counties were also readily available for Milwaukee, Wisconsin. 

A fair portion of this data was even part of the record prior to designations being finalized. 

Although the data would suggest that whatever action was to be taken would be 

consistent for both areas, final action was, in fact, inconsistent. Therefore, U.S. EPA 

should exclude Lake and Porter counties from the Chicago-Kenosha County 

nonattainment area based on the same data and rationale that U.S. EPA used to exclude 

Milwaukee, Wisconsin. 

During the 120-day consultative process concerning designations, IDEM 

expressed concern with regard to national consistency. IDEM also expressed concern 

with regard to whether Lake and Porter counties were being evaluated fairly. Upon review 

of U.S. EPA's technical support documentation regarding final designations, IDEM found 

examples of U.S. EPA's failure to handle Lake and Porter counties in a fair and 

consistent manner in the record. For example, the emissions data U.S. EPA references 

for Lake and Porter counties are overestimated and do not account for reductions that 

have been realized in recent years, particularly in the point source sector, Additionally, 

U.S. EPA compared Lake and Porter counties emission ratios to just Indiana's ortion of 

the CSA, while it compared other portions of the CSA to the CSA in its entirety. 

LADCO recently performed photochemical modeling, using the Comprehensive Air 

Quality Model (CAMx) and most recent emissions inventories and model updates. This 

modeling was performed to support designation processes and attainment 

demonstrations for the six-state LADCO region, consisting of Indiana, Illinois, Michigan, 

Minnesota, Ohio and Wisconsin. 

Ozone source apportionment trace (OSAT) results prepared by LADCO to show 

the impact on the Zion, Lake County, Illinois ozone monitor are outlined below in Chart 1. 

The results are listed by the amount of ozone contributed in parts per billion (ppb) by 

each region modeled (total amount of each bar) and by the emission sector (colored 

portions of each bar, corresponding to each emission sector for the modeled region). 

See, e.g., Illinois-Indiana-Wisconsin Supplement, Area Designations for the 2008 Ozone National 

Ambient Air Quality Standards, at page 13, available at http://www.epa.gov/ozonedesignations/

2008standards/rec/eparesp/R5_revisedTSD.pdf (Lake and Porter counties' VOC and NOx emissions are 

compared to 'emissions for the Indiana portion of the [Chicago CSA]" while those from Kenosha County, 

Wisconsin are deemed "comparatively small" and compared only to "the low-emissions counties in the 

Illinois and Indiana portions of the [Chicago CSA].").
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IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 8. 

Based on the LADCO OSAT modeling results for the Zion monitor, Porter County 

accounted for 0.0017 parts per million (ppm) and Lake County, Indiana accounted 0.0037 

ppm at the Zion, Lake County, Illinois ozone monitor. The rest of the State of Indiana 

contributed 0.0018 ppm to ozone concentrations at the Zion ozone monitor. In 

comparison, the Chicago, Illinois portion of the Chicago nonattainment area contributed 

0.037 ppm, the State of Wisconsin (minus the Milwaukee area) contributed 0.0073 ppm, 

the State of Illinois (minus the Chicago nonattainment area) contributed 0.0061 ppm, 

while the Milwaukee, Wisconsin area was shown to contribute 0.0053 ppm to ozone 

concentrations at the Zion monitor. 

Emission sector contributions vary according to the regions. Lake County, Indiana 

contributions to ozone at Zion were shown to be from non-electrical generating units 

(non-EGU) sources (0.00161 ppm) and onroad (mobile) emissions (0.001 ppm), with 

lesser contributions from offroad and marine/aircraft/rail (0.00057 ppm), area (0.0002 

ppm), and EGU emissions (0.00017 ppm). Porter County, Indiana contributions to ozone 

at Zion included non-EGU sources (0.00049 ppm) and onroad (mobile) emissions 

(0.00049 ppm), as well as offroad and marine/aircraft/rail emissions (0.0004 ppm), and 

EGU emissions (0.00017 ppm).
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IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 9. 

The OSAT results prepared by LADCO to show the impact on the Chiwaukee, 

Kenosha County, Wisconsin ozone monitor are outlined below in Chart 2. The results 

are listed by the amount of ozone contributed in ppb by each region modeled (total 

amount of each bar) and by the emission sector (colored portions of each bar, 

corresponding to each emission sector for the modeled region).

Based on the LADCO OSAT modeling results, Porter County accounted for just 

0.0024 ppm and Lake County, Indiana accounted for 0.0044 ppm at the Chiwaukee, 

Kenosha County, Wisconsin ozone monitor. The rest of the State of Indiana contributed 

0.0022 ppm to ozone concentrations at the Chiwaukee ozone monitor. In comparison, 

the Chicago, Illinois portion of the Chicago nonattainment area contributed 0.033 ppm, 

the State of Wisconsin (minus the Milwaukee area) contributed 0.0069 ppm, the 

Milwaukee area contributed 0.0065 ppm, the State of Illinois (minus the Chicago 

nonattainment area) contributed 0.0059 ppm, while Kenosha County, Wisconsin 

contributed 0.005 ppm to ozone concentrations at the Chiwaukee monitor.
IDEM's Petition for Reconsideration and Stay 

Docket No. EPA-HQ-2008-0476 

August 10, 2012 

Page 10. 

Lake and Porter counties likely contribute a relatively small portion to ozone 

concentrations at Zion and Chiwaukee, an amount U.S. EPA chose to define as 

significant. However, the level of contribution represented for Lake and Porter counties is 

very comparable to that which is represented for either entire or portions of areas that 

U.S. EPA designated attainment under the standard. Additionally, upon looking at the 

source sectors, roughly half of the contribution is from on-road and off-road source 

sectors. Indiana already is controlling these sources to the extent possible. National 

measures would be needed to reduce this sector further. Due to the variety and 

complexity of sources contributing to the total non-EGU sector, controls would be difficult 

to achieve, very costly, and ineffective from a cost-benefit perspective. Even controlling 

this sector at 50%, the reduction gained would be less than I ppb, which would be of little 

regional benefit. Therefore, Indiana requests that U.S. EPA reconsider its action and 

designate Lake and Porter counties as attainment to be consistent with the manner in 

which the agency handled other areas contributing within the region. 

Section 1 07(d)(4)(A)(iv) of the Clean Air Act does not require nonattainment 

boundaries for areas classified as marginal to be based on metropolitan statistical 

boundaries. However, the record concerning this matter suggests that Lake and Porter 

counties were assessed and handled in a more critical fashion than other contributing 

areas solely because they reside within the CSA. Indiana requests that U.S. EPA 

reconsider the nonattainment area boundaries. 

For the reasons outlined above, IDEM requests that U.S. EPA grant 

reconsideration and stay the effectiveness of the portion of EPA's final rule published on 

June 11 2012, and titled 'Air Quality Designations for the 2008 Ozone National Ambient 

Air Quality Standards for Several Counties in Illinois, Indiana, and Wisconsin" that applies 

to Lake and Porter counties, Indiana. IDEM believes that if U.S. EPA fully considers the 

detailed information provided by IDEM throughout this rulemaking process that U.S. EPA 

will reasonably conclude that Indiana's Lake and Porter counties should be excluded 

from the Chicago nonattainment areas. If you have any questions or require clarification 

concerning the information contained within this petition, please feel free to contact Keith 

Baugues, Assistant Commissioner, at (317) 232-8222, or kbauquesidem.in.qov. 

Thomas W. Easterly 

Commissioner