Attachment 16

Maintenance Plan for the Metro-East St. Louis 

Ozone Nonattainment Area for the 1997 8-Hour 

Ozone National Ambient Air Quality Standard 

(Revised)

(June 29, 2011) 

Maintenance Plan for the 

Metro-East St. Louis Ozone N onattainment Area 

for tl1e 1997 8-Hour Ozone 

National Ambient Air Quality Standard 

(Revised) 

AQPSTR 11-03 

June 29, 2011 

Illinois Environmental Protection Agency 

1021 North Grand Avenue East 

Springfield, Illinois 62794-927 6 
TABLE OF CONTENTS 

Page 

LIST OF TABLES . ll1 

LIST OF FIGURES. IV 

EXECUTIVE SUMMARY . 5 

1.0 INTRODUCTION . 6 

1.1 Regulatory BackgrOtmd 6 

1.2 Status of Air Quality . 8 

2.0 REDESIGNATION AND MAINTENANCE PLAN REQUIREMENTS 9 

3.0 OZONE MONITORING 11 

3.1 Monitored Design Values 11 

3.2 Quality Assurance 13 

3.3 Continued Monitoring 13 

4.0 EMISSIONS INVENTORY. 14 

4.1 Attainment Year ln_ventory- 2008 14 

4.2 Air Quality Improvements and Emissions Controls 15 

4.3 Emissions Projections. 16 

4.4 Demonstration ofMaintenance 16 

4.5 Provisions for Future Updates 18 

5.0 CONTROL MEASURES AND REGULATIONS 19 

5.1 Attainment Demonstration Control Measures 19 

5.2 Reasonable Further Progress (RFP) 20 

5.3 Reasonably Available Control Technology (RACT) . 20 

5.4 Controls to Remain in Effect . 21 

5.5 Provisions for Permitting New or Modified Emissions Sources 22 

5.6 Transportation Conformity 22 

6.0 CONTINGENCY MEASURES 24 

6.1 Contingency Measures 24 

6.2 Commitment to Revise Plan 26 

6.3 Public Participation . 26 

6.4 Legal Authority to Implement and Enforce 27 

7.0 CONCLUSIONS 28 
TABLE OF CONTENTS (Continued) 

APPENDIX A Summary of Ambient Air Monitoring Data (2007-2009) . 29 

APPENDIX B Transportation Conformity . 31 
LIST OF TABLES 

Page 

Table 4.1 2008 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 14 

Table 4.2 2002 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 15 

Table 4.3 2015 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 16 

Table 4.4 2020 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 17 

Table 4.5 2025 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 17 

Table 4.6 Comparison of2008, 2015,2020. and 2025 Emissions Estimates 

Metro-East Nonattainment Area 17 

Table 5.1 Proposed 2008 and 2020 Motor Vehicle Emissions Budgets 

Metro-East 8-Hour Ozone Maintenance Plan 23 

Table 6.1 Contingency Plan for the Metro-East 8-Hour Ozone 

Nonattainment Area 25 

111 
LIST OF FIGURES 

Figure 1.1 8-Hour Ozone Nonattainment Area St. Louis, MO-IL. 

Figure 3.1 Ozone Monitors in the St. Louis Metropolitan Area . 

Figure 3.2 Comparison of 8-Hour Ozone Design Values for the 

St. Louis Region Between 2001-2003 and 2007-2009 

Page 

7 

11 

12 
EXECUTIVESUN.UdARY 

This document describes Illinois, Maintenance Plan for the Illinois portion of the St. 

Louis ozone nonattainment area (NAA), hereafter referred to as the Metro-East NAA. A 

Maintenance Plan is required before an area can be redesignated from nonattainment to 

attainment of a National Ambient Air Quality Standard (NAAQS). This document 

provides technical information required to support a request to redesignate the MetroEast NAA to attainment of the 1997 8-hour ozone NAAQS. Illinois submitted a similar 

request to the U.S. Environmental Protection Agency (U.S. EPA). This revision 

incorporates corrections to certain stationary source regulations and the inclusion of 

motor vehicle emissions estimates developed using the U.S,EPA's MOVES model. The 

Illinois Environmental Protection Agency (Illinois EPA) has prepared this plan in 

consultation with the Missouri Department ofNatural Resources (MDNR) and the U.S. 

EPA. The MDNR is preparing a similar plan for the Missouri portion of the St. Louis 

nonattainment area. 

Ozone air quality has dramatically improved in the St. Louis region as a result of 

implementation of State and Federal control measures since the designation ofthe St. 

Louis area as nonattainrnent in 2004. The entire St. Louis nonattainment area has at least 

three years of complete, quality assured ambient air quality monitoring data for 2007-

2009 that demonstrates compliance with the 1997 8-hour ozone NAAQS. These air 

quality improvements are due to permanent and enforceable emissions control measures. 

This Maintenance Plan provides for continued attainment of the 1997 8-hour ozone air 

quality standard for the Metro-East nonattainment area for a period often years after U.S. 

EPA has formally redesignated the area to attainment. The Plan also provides assurances 

that, even if there is a subsequent violation of the air quality standard, measures listed in 

the Plan will prevent any future occurrences through contingency measures that would be 

triggered upon such an occurrence. Finally, the Plan includes on-road motor vehicle . 

emissions budgets for the years 2008 and 2025 for use in transportation conformity 

determinations to assure that any increases in emissions from this sector do not 

jeopardize continued attainment of the 8-hour ozone standard during the maintenance 

period. 
1.0 INTRODUCTION 

This document describes Illinois' 8-hour ozone Maintenance Plan for the Metro-East 

NAA. This Maintenance Plan is required before the area can be redesignated from 

nonattainment to attainment of the N:ational Ambient Air Quality Standard (NAAQS) for 

ozone promulgated by the U.S. Environmental Protection Agency (U.S. EPA) in 1997. 

Illinois intends to submit such a request to the U.S. EPA in conjunction with this 

Maintenance Plan. The Illinois EPA has prepared this plan in consultation with the 

Missouri Department of Natural Resources (MDNR) and U.S. EPA. The MDNR is 

preparing a similar plan for the Missouri portion of the St. Louis nonattainment area. The 

entire St. Louis nonattainment area has at least three years of complete, quality assured 

ambient air quality monitoring data for 2007-2009, demonstrating attainment with the 

0.080 ppm 8-hour ozone NAAQS promulgated in 1997. 

This document provides the technical information needed to support a request to 

redesignate the St. Louis area to attainment. Section 107 ofthe Clean Air Act (CAA) 

establishes specific requirements to be met in order for a nonattainrnent area to be 

considered for redesignation. Before an area can be reclassified to attainment, U.S. EPA 

must make a determination that the area has attained the NAAQS based on at least three 

complete years of ambient monitoring data. U.S. EPA must have approved a State 

Implementation Plan (SIP) for the area under Section 110 and Part D of the CAA. The 

state must demonstrate that the improvement in air quality is due to permanent and 

enforceable reductions in emissions resulting from implementation of the SIP and other 

federal requirements. Finally, the state must submit, and U.S. EPA must approve, a 

Maintenance Plan under Section 175(A) of the CAA, including provisions for 

contingency measures that will be implemented if future violations ofthe NAAQS are 

measured. 

This Maintenance Plan provides for the continued attainment of the 8-hour ozone 

NAAQS for the Metro-East NAA for a minimum often years after U.S. EPA has 

formally redesignated the area to attainment. The Plan also provides assurances that even 

if a subsequent violation of the ozone NAAQS occurs, provisions in the Plan will prevent 

any future occurrences through contingency measures that would be triggered upon such 

occurrence. 

This document addresses the Maintenance Plan requirements established by the CAA and 

U.S. EPA, and includes additional information to support continued compliance with the 

8-hour ozone NAAQS. 

1.1 Regulatory Background 

The CAA requires areas that fail to meet the NAAQS for ozone to develop SIPs to 

expeditiously attain and maintain the NAAQS. Historically, exceedances of the ozone 

NAAQS have been monitored in Madison and St. Clair counties in Illinois and in the 

Missouri portion of the NAA. 

The Metro-East NAA, which includes Madison, Monroe, St. Clair, and Jersey counties in 

Illinois, was originally designated as nonattainment in 2004 pursuant to the 1997 
revisions to the ozone NAAQS. Several counties in Missouri were also designated as 

nonattainment of the 8-hour ozone NAAQS. Figure 1.1 depicts the current St. Louis 

Missouri-Illinois NAA. 

Figure 1.1 

8-Hour Ozone Nonattainment Area 

St. Louis, MO-IL 

Is~ Moderate ra---' 

Source: USEPA, Office of Air Quality Planning and Standards, Green l3ook, August 03, 2004 
The following is a list of the counties contained in the St. Louis Missouri-illinois 8-hour 

ozone nonattainment area: 

• Madison County, IL 

• St. Clair County, IL 

• Monroe County, IL 

• Jersey County, IL 

• St. Louis County, MO 

• St. Louis City, MO 

• St Charles, MO 

• Jefferson County, MO 

• Franklin County, MO 

As a result of the nonattairunent designation and the accompanying classification as 

moderate, these areas were subject to new requirements, including development of a plan 

demonstrating that the area would meet the federal8-hour ozone NAAQS by June 15, 

2010. 

Recognizing the need for a regional solution, the States of illinois and Missouri have 

worked cooperatively to jointly develop and evaluate an effective regional attainment 

strategy to enable the St. Louis region to attain the 8-hour ozone NAAQS. The 

attainment strategy recognizes the importance of reducing both locally generated ozone 

precursor emissions, volatile organic material (VOM) and oxides of nitrogen (NUx), as 

well as incoming (transported) ozone and ozone precursor emissions. The emissions 

reductions needed to attain the 8-hour ozone NAAQS include both State and Federal 

measures that have reduced ozone precursor emissions both locally and regionally. 

These measures have allowed the St. Louis Missouri-illinois NAA to attain the 8-hour 

ozone standard by the attainment deadline established by the U.S. EPA. 

1.2 Status of Air Quality 

Ozone monitoring data for the most recent three-year period, 2007 through 2009, 

demonstrates that air quality has met the 1997 8-hour ozone NAAQS in the St. Louis 

Missouri-Illinois NAA. Information regarding the air monitoring network and air quality 

monitoring data in included in Section 3.0 and Appendix A. 
2.0 REDESIGNATION AND MAINTENANCE PLAN REQUIREMENTS 

Sections 1 07 and 110 of the CAA list a number of requirements that must be met by 

nonattainment areas prior to consideration for redesignation to attainment. One of those 

requirements is the development of a Maintenance Plan, which describes a state's plan 

for maintaining the NAAQS for a minimum ten-year period after redesignation to 

attainment. U.S. EPA has published guidance for the preparation of Maintenance Plans 

and redesignation requests, contained in a document entitled "Procedures for Processing 

Requests to Redesignate Areas to Attainment" (September 4, 1992). 

Before a redesignation to attainment can be promulgated, U.S. EPA must: 

• Determine that the NAAQS for ozone, as published in 40 CFR 50.4, has been 

attained. Ozone monitoring data must show that violations of the NAAQS are no 

longer occurring. This showing must rely on three consecutive years of data. The 

ambient air monitoring data must be quality assured in accordance with 40 CFR 

58.10, recorded in U.S. EPA's Air Quality System (AQS) data base, and made 

available to the public. 

• Approve the state's plan for demonstrating attainment. The attainment plan, 

which is based on air quality modeling, must contain enforceable control 

measures and must be submitted as a revision to the state's SIP after a public 

hearing. 

• Determine that the improvement in air quality between the year violations 

occurred and the year that attainment was achieved is based on permanent and 

enforceable emissions reductions. 

• Approve the state's Maintenance Plan. The requirements for the Maintenance 

Plan are discussed below. 

• Determine that all other requirements applicable to nonattainment areas have been 

met. 

A Maintenance Plan provides for the continued attainment of the 8-hour ozone NAAQS 

for a nonattainment area for a period of ten years after U.S. EPA has formally 

redesignated the area to attainment. The plan also provides assurances that even if a 

subsequent violation of the NAAQS occurs, provisions in the plan will prevent any future 

occurrences through contingency measures that would be triggered upon such 

occurrence. To be approvable, the state is required to have a public hearing on the 

Maintenance Plan prior to adoption. The Maintenance Plan must contain the following 

elements: 

• A comprehensive emissions inventory of the precursors of ozone completed for 

the "attainment year"; 
• A projection of the emissions inventory forward to a year at least ten years after 

redesignation and a demonstration that the projected level of emissions is 

sufficient to maintain attainment of the ozone NAAQS; 

• A commitment that, once redesignated, the state will continue to operate an 

appropriate monitoring network to verify maintenance of the attainment status; 

• A demonstration of legal authority to implement and enforce all control measures 

contained in the SIP; 

• Provisions for future updates of the inventory to enable tracking of emissions 

levels, including an annual emissions statement from major sources; 

• Motor vehicle emissions budgets for transportation conformity for the 

maintenance period; 

• A commitment to submit a revised Maintenance Plan eight years after 

redesignation; 

• A commitment to enact and implement additional contingency control measures 

expeditiously in the event that future violations of the NAAQS occur; 

• A list of potential contingency measures that would be implemented in such an 

event. 

This Maintenance Plan has been prepared in accordance with the requirements specified 

in U.S. EPA's guidance document and additional guidance received from U.S. EPA staff. 

The following sections of this document describe how U.S. EPA's requirements have 

been met. 
3.0 OZONE MONITORING 

U.S. EPA's published guidance document, "Procedures for Processing Requests to 

Redesignate Areas to Attainment" (September 4, 1992), details specific requirements 

regarding the collection and use of ambient air monitoring data needed to support a 

redesignation request Before the Metro-East NAA can be redesignated, Illinois must 

demonstrate that the 8-hour ozone NAAQS bas been attained. Ozone monitoring data 

must show that violations of the NAAQS are no longer occurring within the 

nonattainment area. This showing must rely on three complete, consecutive calendar 

years of quality assured data. Further, the air monitoring data must be quality assured in 

accordance with 40 CFR 58.10, recorded in U.S. EPA's AQS data base, and made 

available to the public. Finally, Illinois must commit to continue to operate an 

appropriate monitoring network to verify the maintenance of the attainment status, once 

the area bas been redesignated. 

The following subsections describe how each of these requirements bas been addressed. 

3.1 Monitored Design Values 

Currently there are 11 ozone monitors located in the nonattainment counties in the St 

Louis region; 6 are located in Missouri and 5 are in Illinois. Missouri and illinois also 

operate ozone monitors at locations upwind and downwind of the metropolitan area. 

Figure 3.1 shows the locations of these monitors. 

Figure 3.1 Ozone Monitors in tbe St. Louis Area 

Nilwood& 

I' ike Crt:ene 

l\Jotoupln 

M<Hotgumery 

Llnroln 

i\t:uJt"ofl 

Clinton 

SLCllllr 

\\"u!Chin~ton 

&Houston 

Pc:rry 

Ctll\\f('rtl Legend 

A. Ol.cne MGOilofw 
To determine whether the NAAQS is being exceeded, the 8-hour ozone design value 

must b.e calculated. The current U.S. EPA method for calculating the ozone design value 

is to average each monitor's 4th highest daily maximum 8-hour value for each year over 

the 3-year period and compare it to the calculated design values to the 0.080 ppm (or 85 

ppb) level of the NA.L\.QS. The calculated 8-hour ozone design values for the monitors 

in the St. Louis Missouri-Illinois NAA for 2007-2009 are included as Appendix A ofthis 

report. Figure 3.2 compares the design values for the 2001-2003 period for monitoring 

stations in the St. Louis region to the corresponding design values from 2007-2009. The 

data demonstrate that ozone air quality has improved dramatically throughout the St. 

Louis region and that the 1997 8-hour ozone NAAQS has been attained for the 2007-

2009 period at all locations. 

/ 

Figure 3.2 

Comparison of 8-Hour Ozone Design Values (ppb) for tbe St. Louis Region 

Between 2001-2003 and 2007-2009 

2001-2003 2007-2009 

Crm:~ L 
3.2 Quality Assurance 

Illinois EPA has quality assured all monitoring data shown in Appendix A for all sites 

located in Illinois in accordance with 40 CFR 58.10 and the Illinois EPA's Quality 

Assurance Plan, which describes Illinois EPA's standard operating procedures for 

operating the ambient monitoring network and validating the data. The Missouri DNR 

has a similar quality assurance plan. lllinois EPA has recorded the monitoring data in the 

U.S. EPA's AQS database, which is available to the public. 

3.3 Continued Monitoring 

Illinois commits to continue monitoring ozone levels according to a U.S. EPA approved 

monitoring plan, as required to ensure maintenance of the ozone NAAQS. Should 

changes in the location of an ozone monitor become necessary, Illinois EPA will work 

with U.S. EPA to ensure the adequacy of the monitoring network. Illinois EPA will 

continue to quality assure the monitoring data to meet the requirements of 40 CFR 58. 

Illinois EPA will continue to enter all data into AQS on a timely basis in accordance with 

federal guidelines. 
4.0 EMISSIONS INVENTORY 

A redesignation request must contain a demonstration that the improvement in air quality 

between the year that violations occurred and the year that attainment was achieved is 

based on permanent and enforceable emissions reductions. As described previously in 

Section 3.0, a three-year monitoring period is used to evaluate whether attainment has 

been achieved. In this Section, the ''attainment year" refers to the mid-point year (2008) 

of the three-year period (2007-2009) used to demonstrate attainment. The request should 

also include a projection of the emissions inventory to a year at least 10 years following 

redesignation, a demonstration that the projected level of emissions is sufficient to 

maintain the ozone NAAQS, and a commitment to provide future updates of the 

inventory to enable tracking of emissions levels during the 10-year maintenance period. 

4.1 Attainment Year Inventory- 2008 

Illinois EPA has prepared a comprehensive emissions inventory for the Metro-East ozone 

nonattainment area, including point, area, and on-road and off-road mobile sources for 

precursors of ozone (VOM and NOx) for the attainment year, 2008. This inventory is 

based on actual or projected activity levels. Point source information was compiled from 

2008 annual emissions reports submitted to the Illinois EPA by emissions sources and the 

U.S. EPA's Clean Air Markets Division database for electric utilities. Area source 

emissions were calculated using the most recently available methodologies and emissions 

factors from U.S. EPA along with activity data (typically population, employment, fuel 

use, etc.) specific to 2008. On-road mobile source emissions were calculated using U.S. 

EPA's MOVES emissions model with 2008 vehicle miles traveled (VMT) data provided 

by the Illinois Department of Transportation (IDOT). Off-road mobile source emissions 

were calculated for summer 2008 using U.S. EPA's NONROAD emissions model. 

Biogenic emissions are not included in these summaries. 

Table 4.1 summarizes the 2008 emissions estimates for the Metro-East ozone 

nonattainment area. 

Table 4.1 

2008 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 

(Emissions stated in tons per ozone season weekday) 

Source Category VOM NOx 

Point Sources 11.92 39.86 

Area Sources 23.21 1.50 

On-Road Mobile Sources 17.27 52.57 

Off-Road Mobile Sources 12.66 39.25 

Total 65.06 133.18 
4.2 Air Quality Improvements and Emissions Controls 

The Metro-East area was designated as nonattainment of the 1997 8-hour ozone NAAQS 

in 2004, based on ozone air quality monitoring data collected between 2001 and 2003. 

Since that time, permanent and enforceable reductions of ozone precursor emissions have 

contributed to improvements in ozone air quality and to the attainment of the 8-hour 

ozone NAAQS. Some of these emissions reductions were due to the application of 

tighter federal emissions standards on motor vehicles and fuels, and some due to the 

requirements of the federal NOx SIP Call. Section 5.0 of this report describes these 

reductions in more detail, along with an explanation of their regulatory status. In this 

subsection, the 2008 attainment year emissions levels are compared to the base year 2002 

emissions levels. 

U.S. EPA's 8-hour Ozone Implementation Rule required that states with ozone 

nonattainment areas prepare and submit a 2002 base year inventory of anthropogenic 

sources of ozone precursor emissions. This base year inventory included emissions from 

point, area, on-road mobile and off-road mobile emissions. Illinois EPA prepared and 

submitted this inventory in June 2006. Table 4.2 summarizes 2002 emissions by major 

source category and by pollutant for the Metro-East NAA. 

Table 4.2 

2002 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 

(Emissions stated in tons per ozone season weekday) 

Source Category VOM NOx 

Point Sources 17.41 53.24 

Area Sources 29.86 1.40 

On-Road Mobile Sources 25.90 76.82 

Off-Road Mobile Sources 12.04 36.79 

Total 85.21 168.25 

Comparing the 2002 inventory to that for 2008 indicates that total VOM emissions in the 

Metro-East area decreased by 20.15 tons per day (tpd), due largely to reductions from 

point and on-road mobile sources. NOx emissions in the Metro-East area decreased 

significantly, 35.07 tpd, during the same time period. Again, these reductions were 

primarily from point and on-road mobile sources. These sizeable emissions reductions in 

ozone precursor emissions, and corresponding reductions in the Missouri portion of the 

NAA, plus reductions in upwind areas in Illinois and other nearby states, resulted in a 

substantial improvement in ozone air quality in the St. Louis area, ultimately resulting in 

attainment of the 1997 8-hour ozone NAAQS. 
4.3 Emissions Projections 

A Maintenance Plan must contain a demonstration that the level of emissions projected 

for the ten-year period following redesignation are sufficient to maintain the NAAQS. 

Accordingly, Illinois EPA has projected VOM and NOx emissions for the Metro-East 

NAA for 2025. Illinois EPA has also projected emissions to 2015 and 2020, to represent 

two midpoint years during the maintenance period. Emissions for these three projection 

years are compared to emissions levels in 2008 to determine if emissions are sufficient to 

maintain the NAAQS during this period. 

Metro-East area point and area source emissions for 2015, 2020, and 2025 were 

estimated using the 2008 base year inventory and growth factors appropriate for each 

source category. The effect of Illinois' recently adopted NOx RACT requirement on 

NOx emissions in future years was estimated and applied, as appropriate, to the point 

source inventory. Off-road emissions projections were developed using the growth 

factors contained in U.S. EPA's NONROAD model. On-road motor vehicle emissions 

were estimated using U.S. EPA's MOVES motor vehicle emissions model. The figures 

assume the continued use of reformulated gasoline, the continued phase-in ofthe Tier 2 

motor vehicle emissions standards, and operation of an enhanced vehicle inspection and 

maintenance (liM) program. Total vehicle miles of travel (VMT) for 2015, 2020, and 

2025 were assumed to increase at a rate of 1.5 percent per year from 2008. 

Tables 4.3, 4.4, and 4.5 include the VOM and NOx emissions estimates for the years 

2015, 2020, and 2025. respectively, for the Metro-East nonattajnment ~ea. 

Table43 

2015 Metro-East Ozone NonattainmentArea 

VOM and NOx Emissions 

(Emissions stated in tons per ozone season weekday) 

Source Category VOM NOx 

Point Sources 13.70 31.86 

Area Sources 23.76 1.55 

On-RoadMobileSources 9.11 27.85 

Off-Road Mobile Sources 9.27 36.41 

Total 55.84 97.67 

4.4 Demonstration of Maintenance 

Table 4.6 demonstrates that the level of emissions projected for the ten-year period 

following redesignation is sufficient to maintain the ozone NAAQS. As shown in the 

table, both VOM and NOx emissions within the nonattainment area are expected to 

decrease significantly between 2008 and 2025. Projected VOM and NOx emissions for 

the mid-point years, 2015 and 2020, are also less than the emissions levels in 2008. 

Based on these emissions trends it is expected that air quality will continue to meet the 

1997 8-hour ozone NAAQS throughout the maintenance period. 
VOM 

NOx 

Table 4.4 

2020 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 

(Emissions stated in tons per ozone season weekday) 

Source Category VOM NOx 

Point Sources 14.73 30.71 

Area Sources 25.04 1.56 

On-Road Mobile Sources 4.99 16.32 

Off-Road Mobile Sources 7.73 33.56 

Total 52.49 82.15 

Table4.5 

2025 Metro-East Ozone Nonattainment Area 

VOM and NOx Emissions 

(Emissions stated in tons per ozone season weekday) 

Source Category VOM NOx 

Point Sources 15.78 32.12 

Area Sources 26.32 1.58 

On-Road Mobile Sources 5.68 15.22 

Off-Road Mobile Sources 7.31 32.33 

Total 55.09 81.25 

Table 4.6 

Comparison of 2008, 2015, 2020, and 2025 Emissions Estimates 

Metro-East Nonattainment Area 

(Emissions stated in tons per ozone season weekday) 

Difference Difference Difference 

2008 2015 (2008- 2015) 2020 (2008 - 2020) 2025 (2008 - 2025) 

65.06 55.84 9.22 52.49 12.57 55.09 9.97 

133.18 97.67 35.51 82.15 51.03 81.25 51.93 

In addition to the overall emissions reductions projected to occur within the 

nonattainment area, significant reductions of statewide NOx emissions resulting from 

implementation of Illinois' multi-pollutant standards affecting electric utilities by 2012, 

will also help to ensure continued attainment of the 8-hour ozone NAAQS. 
4.5 Provisions for Future Updates 

As required by Section 175A(b) of the CAA, Illinois connnits to submit to U.S. EPA, 

eight years after redesignation, a revised version of this Maintenance Plan. The revision 

will contain Illinois' plan for maintaining the 8-hour ozone NAAQS for ten years beyond 

the first 1 0-year period after redesignation. 
5.0 CONTROL MEASURES AND REGULATIONS 

This section provides specific information on the control measures implemented in the 

Metro-East nonattainment area, including the measures that were part oflllinois' 

Attainment Demonstration, Reasonable Further Progress (RFP) demonstration, CAA 

requirements, and other state and federal measures . .The control measures required in 

past ozone SIP revisions have been fully implemented, and other, more recent control 

programs will continue to provide emissions reductions in future years. Illinois EPA 

commits to keep these measures in effect after redesignation, or to provide equivalent 

emissions levels using alternate measures. Illinois' SIP contains acceptable provisions to 

provide for preconstruction review of new emissions sources. After redesignation to 

attainment, Prevention of Significant Deterioration (PSD) requirements will apply to the 

construction of new major sources and to significant modifications of existing sources. 

Illinois has accepted delegation from U.S. EPA of this program. Illinois further commits 

to continue to require that all future transportation plans in the St. Louis area conform 

with the SIP. 

5.1 Attainment Demonstration Control Measures 

Illinois' attainment demonstration for the Metro-East nonattainment area identified 

control measures that had been promulgated at either the state or federal level that are 

sufficient to allow the region to meet the 1997 8-hour ozone NAAQS by the required 

attainment date. The attainment demonstration, which was submitted to U.S. EPA after a 

public hearing and public comment period, is described in the Illinois EPA's document: 

"8-Hour Ozone Attainment Demonstration for the Metro~ East Nonattainment Area" 

(Report Number AQPSTR 07-02, June 15, 2007). The primary emissions reduction 

measures for demonstrating attainment of the ozone standard are as follows: 

• NOx SIP Call and Clean Air Interstate Rule (CAIR) 

• New Source Performance Standards (NSPS) and National Emissions Standards 

for Hazardous Air Pollutants (NESHAPS)/Maximum Achievable Control 

Technology (MACT) Standards 

• VOM Solvent Categories: Aerosol Coatings, Architectural and Industrial 

Maintenance (AIM) Coatings, Consumer Solvents 

• Vehicle 11M Program 

• Reformulated Gasoline 

• Tier 2 Motor Vehicle Emissions Standards and Gasoline Sulfur Control 

Requirements 
• On-Highway Heavy-Duty Engine and Vehicle Standards and Highway Diesel 

Fuel Sulfur Control Requirements 

• Federal Emissions Standards for Off-Road Equipment (e.g., Nonroad Diesel 

Engine Rule, Evaporative Large Spark Ignition and Recreational Vehicle 

Standards) incorporated into NONROAD Model 

• Tier 4 Nonroad Diesel Engine Standards and Diesel Fuel Sulfur Content 

Restrictions 

• Marine Compression-Ignition Engine Standards and Locomotive Engine 

Standards 

• Consent Decrees---Dynegy and ConocoPhillips 

5.2 Reasonable Further Progress (RFP) 

Si0;ce the Metro-East area is classified as a moderate nonattainment area for the 8-hour 

ozqne standard, a 15 percent net reduction in ozone precursor emissions from 2002 levels 

was required by 2008 in order to meet the RFP requirement. In the Metro-East 

attainment demonstration, the Illinois EPA relied on NOx substitution to meet the 15 

percent RFP reduction requirement. 

The control measures identified in the RFP document, including those listed above, were 

prQjected to result in a 6.48 percent reduction in VOM emissions and a 10.01 percent 

reduction in NOx emissions from 2002 levels by the year 2008, a total reduction of 16.49 

percent. All ofthe identified emissions control measures were implemented by 2008. 

These emissions reductions achieve the 15 percent RFP target for the Metro-East NAA. 

5.3 Reasonably Available Control Technology CRACT) 

Pursuant to Sections 172, 182(b) and (f) of the CAA, RACT is required for all existing 

major sources of the applicable criteria pollutant and its precursors located in NAAs. 

U.S. EPA defmes RACT as the lowest emissions limitation that a particular source is 

capable of meeting by the application of control technology that is reasonably available 

considering technological feasibility and economic reasonableness (70 FR 71612; 

November 29, 2005). The major source threshold for moderate NAAs is defined as 100 

tons per year (tpy). A source generally consists of several units that emit pollutants. The 

sum of emissions from all units at the source determines if a unit is major and thus 

subject to RACT requirements. 

RACT is not a new requirement under the CAA. Illinois previously addressed RACT 

requirements in the Metro-East area in developing attainment plans for the 1-hour ozone 

standard. Illinois has previously adopted RACT requirements for VOM emissions in the 

NAA. (See_ 35 Ill. Adm. Code Part 219) The Illinois EPA has evaluated the previously 
adopted regulations to determine if the RACT requirement is still being met for 8-hour 

ozone. The RACT requirement for NOx was waived for the 1997 8-hour ozone standard, 

based on U.S. EPA's finding that additional NOx reductions were not needed for the area 

to attain the standard. 

Sections 172, 182(b)(2), and 182(f) of the CAA require implementation ofRACT for 

sources that are subject to Control Techniques Guidelines (CTGs) that are promulgated 

by U.S. EPA. The U.S. EPA has issued CTGs defining RACT for those categories of 

sources that emit the greatest amounts of V 0 M emissions. Illinois EPA has proposed 

regulations to implement the revised CTGs issued by the U.S. EPA in 2006, 2007, and 

2008. The 2006 CTG's addressed industrial cleaning solvents, offset lithographic 

printing and letterpress printing, flexible package printing, and flat wood paneling 

coatings. The 2007 CTG's address paper, film, and foil coatings, large appliance 

coatings, and metal furniture coatings. The 2008 CTG's address miscellaneous metal and 

plastic parts coatings, fiberglass boat manufacturing materials, miscellaneous industrial 

adhesives, and automobile and light-duty truck assembly coatings. Other than the above 

mentioned CTGs, Illinois has adopted applicable rules addressing all CTGs published by 

U.S. EPA for which there are existing sources in the Metro-East NAA. 

Non-CTG sources are defmed as major VOM sources which are not subject to CTGs, but 

for which RACT is required. All major sources of ozone precursors located in the ozone 

NAA that are not subject to individual RACT rules are subject to a generic RACT rule. 

These rules apply to non-CTG sources that have the potential to emit 100 tons or more 

per year ofVOM. Thus, Illinois has met the obligation to implement RACT on non-CTG 

VOM sources in the NAA. 

It should be noted that other regulatory requirements also affect VOM emissions sources 

within the Metro-East ozone NAA. These include MACT, federal NSPS, and NESHAPs. 

These programs satisfy the RACT requirements for specific source categories because 

these rules are more stringent than RACT. It is concluded from this review that Illinois' 

existing VOM RACT rules fulfill U.S. EPA's RACT requirements for VOM sources in 

the Metro-East N AA. 

As mentioned previously, the RACT requirement for NOx was waived under the 1997 8-

hour ozone NAAQS. Although the Illinois EPA has adopted NOx RACT rules, the 

attainment demonstration for the St. Louis NAA for the 1997 ozone NAAQS did not rely 

on emissions reductions from the Illinois EPA's NOx RACT rules. The reductions 

resulting from this program, when implemented, will help the area to maintain the 

NAAQS in future years. 

5.4 Controls to Remain in Effect 

Illinois will maintain all of the control measures listed in this Section to ensure 

maintenance of the 8-hour ozone NAAQS. Any revisions to the control measures 

included as part ofthe Maintenance Plan will be submitted as a SIP revision to U.S. EPA 
for approval, and will be accompanied by a showing that such changes will not interfere 

with maintenance of the NAAQS. 

Illinois EPA has the necessary resources to enforce any violations of its rules or permit 

provisions. After redesignation, it intends to continue enforcing all rules that relate to the 

emissions of ozone precursors in the Metro-East nonattainment area. 

5.5 Provisions for Permitting New or Modified Emissions Sources 

Illinois has longstanding and fully implemented programs for the review of new major 

sources and significant modifications of existing sources. The PSD program, which 

includes requirements for Best Available Control Technology (BACT) on major new 

sources or significant modifications of existing sources, will be applicable in the MetroEast area once the area has been redesignated to attainment. illinois has been delegated 

full authority to implement the PSD program by U.S. EPA. 

5.6 Transportation Conformity 

The purpose of this section is to describe and establish the Metro-East nonattainment area 

motor vehicle emissions budgets associated with the 8-hour ozone Maintenance Plan SIP. 

Average summer weekday motor vehicle emissions budgets are being proposed for the 

attainment year 2008 and for the fmal year of the Maintenance Plan, 2025, for the 

precursor pollutants VOM and NOx. Although motor vehicle emissions were estimated 

for the milestone years of2015 and 2020, only the 2008 and 2025 estimates are being 

proposed as budgets. 

A motor vehicle emissions budget is that portion of the total allowable emissions 

allocated to highway and transit vehicle use that are defined in the SIP for a certain year. 

The rules governing transportation conformity require certain transportation activities to 

be consistent with motor vehicle emissions budgets contained in control strategy 

implementation plans (40 CFR § 93.118). Section 93.101 of the rule defines a "control 

strategy [State] implementation plan revision" as a "plan which contains specific 

strategies for controlling the emissions and reducing ambient levels of pollutants in order 

to satisfy CAA requirements of reasonable further progress and attainment." In order to 

demonstrate conformity to the motor vehicle emissions budget, emissions from the 

implementation of a transportation plan or a transportation improvement program must 

be less than or equal to the budget level ( 40 CFR § 93 .118( a)). 

The motor vehicle emissions budgets established and described herein were developed 

consistent with the methodology and control strategy assumptions used in the 8-hour 

ozone attainment demonstration. The budgets reflect an emissions level determined 

using actual motor vehicle VMT for 2008 and VMT growth at an annual rate of 1.5% 

from year 2008levels to 2025. The effects of motor vehicle control measures are 

incorporated into the emissions factors produced by the U.S. EPA's MOVES model. 

These control measures include the implementation of national motor vehicle emissions 

standards, the operation of a vehicle I/M program, and the required use of reformulated 
gasoline and low sulfur gasoline and diesel fuel. 

The motor vehicle emissions budgets, which reflect the VMT and control program 

assumptions and methodology described here, are listed in Table 5.1. 

Table 5.1 

Proposed 2008 and 2025 Motor Vehicle Emissions Budgets 

Metro-East 8-hour Ozone Maintenance Plan 

(tons per ozone season weekday) 

Year VOM NOx 

2008 17.27 52.57 

2025 5.68 15.22 

Additional details on the derivation of the motor vehicle emissions budgets, including 

discussion of the MOVES model inputs and assumptions are included in Appendix B of 

this report. 
6.0 CONTINGENCY MEASURES 

6.1 Contingency Measures 

Section 175(A) of the CAA specifies the requirements for Maintenance Plans, including 

provisions for contingency measures that will be implemented if violations ofthe 8-hour 

ozone NAAQS are measured after redesignation to attainment. A list of potential 

contingency measures that would be implemented in such an event should also be 

included in the Maintenance Plan. Finally, the plan should provide a commitment to 

submit a revised Maintenance Plan eight years after redesignation to ensure continued 

maintenance for the next ten-year maintenance period. 

Contingency measures are intended to provide further emissions reductions ir the event 

that violations of the 8-hour ozone NAAQS occur after redesignation to attainment. 

While these measures do not need to be fully adopted by the Illinois Pollution Control 

Board (IPCB) prior to the occurrence ofNAAQS violations, the contingency plan should 

ensure that the contingency measures are adopted expeditiously once they are triggered. 

The Maintenance Plan must identify the triggers that determine when contingency 

measures will be adopted, and the measures that the state will consider. 

Illinois EPA's contingency plan for the Metro-East NAA is described in Table 6.1. 

Consistent with this plan, Illinois agrees to adopt and implement, as expeditiously as 

practicable, the necessary corrective actions in the event that violations of the 8-hour 

ozone NAAQS occur within the Metro-East maintenance area after redesignation to 

attainment. Further, Illinois commits to continue to implement the control measures 

identified in the attainment demonstration and RFP demonstration. As described in 

Section 5.0 of this report, Illinois has adopted and is continuing to implement a range of 

control measures that will greatly reduce precursor emissions, both locally and statewide. 

The contingency plan anticipates that these emissions reductions will be sufficient to 

mitigate exceedances or violations of the NAAQS that may occur in the coming years 

without further regulatory action. 

The contingency plan provides for different levels of corrective responses should ambient 

8-hour ozone levels exceed the NAAQS in any year, if emissions in the NAA increase 

significantly above current attainment levels, or if the NAAQS is violated. A Level I 

response would occur in the event that: 1) the fourth highest 8-hour ozone concentration 

at any monitoring site in the St. Louis NAA (including sites in Missouri and Illinois) 

exceeds 84 ppb in any year, or 2) ifVOM or NOx emissions increase more than 5% 

above the levels contained in the attainment year (2008) emissions inventory. It should 

be noted that U.S. EPA does not require a state to implement contingency measures when 

occasional exceedances are recorded. The Illinois EPA's voluntary commitment to 

initiate a Level I response is intended to prevent future violations of the NAAQS from 

ever occurring. 

Illinois commits to compiling VOM and NOx emissions inventories for the Metro-East 

area every three years for the duration of the Maintenance Plan to facilitate the 
Table 6.1 

Contingency Plan for the Metro-East 8-Hour Ozone Nonattainment Area 

Contingency Measure Action to be Taken List of Potential Contingency Measures Trigger 

Level I Trigger Point Source Measures 

IL will evaluate air quality, or • IL Multi-Pollutant Program for 

• Fourth highest detennine if adverse emissions trends electric generating units 

monitored 8-hour are likely to continue. If so, IL will • NOxRACT 

average ozone detennine what and where controls • Clean Air Transport Rule, after 

concentration may be required, as well as level of promulgation by USEPA 

exceeding 84 ppb in emissions reductions needed, to avoid a • Best Available Retrofit 

any year at any violation of the NAAQS. The study Technology (BART) 

monitoring station in shall be completed within 9 months. If 

the St. Louis MO-IL necessary, control measures shall be Mobile Source Measures 

maintenance area. adopted within 18 months of • Tier 2 Vehicle Standards and Low 

detennination and implemented as Sulfur Fuel 

expeditiously as practicable, taking into • Heavy Duty Diesel Standards and 

• The Metro-East consideration the ease of Low Sulfur Diesel Fuel 

maintenance area's implementation and the technical and • High-enhanced VM (OBDII) NOxorVOM economic feasibility of the selected 

• Federal railroad/locomotive 

emissions inventories measures. standards 

increase more than • Federal commercial marine vessel 5% above the levels engine standards included in the 2008 

• Portable fuel containers emissions inventories. 

Area Source Measures Level II Trigger IL will conduct a thorough analysis to 

• Architectural/Industrial 

• A violation of the detennine appropriate measures to Maintenance (AIM) Coatings NAAQS at any address the cause of the violation. 

monitoring station in Analysis shall be completed within 6 • Commercial and Consumer 

the St. Louis MO-IL months. Selected measures shall be Products 

maintenance area. implemented within 18 months of a • Aerosol coatings 

violation. • Broader geographic applicability 

of existing measures 

emissions trends analysis included in the contingency plan under Level I. The Illinois 

EPA will coordinate with the Missouri DNR to evaluate the causes of high ozone levels 

or the emissions trends and to determine appropriate control measures needed to assure 

continued attainment of 8-hour ozone NAAQS. Under Level I, measures that could be 

implemented in a short time would be selected so as to be in place quickly after the 

Illinois EPA is aware that corrective measures have been triggered. Control measures 

selected under Level I will be adopted in most cases within 18 months after a 

determination is made, and implemented, generally, within 24 months of adoption by the 

IPCB. 

A Level II response would be implemented in the event that a violation of the 8-hour 

ozone NAAQS were to be measured at a monitoring site within the St. Louis 

maintenance area (including sites in Missouri and Illinois). In order to select appropriate 
corrective measures, the Illinois EPA will work with the Missouri DNR to conduct a 

comprehensive study to determine the causes of the violation and the control measures 

necessary to mitigate the problem. The analysis will examine the following factors: 

• the number, location, and severity of the ambient ozone exceedances; 

• the weather patterns contributing to the elevated ozone levels; 

• potential contributing emissions sources; . 

• the geographic applicability of possible contingency measures; 

• emissions trends, including timeliness of implementation of scheduled control 

measures; 

• current and recently identified control technologies; and 

• air quality contributions from outside the maintenance area. 

Contingency measures will be selected from those listed in Table 6.1 or from any other 

measure deemed appropriate and effective at the time the selection is made. It is 

expected that implementation of only a few of these measures would be necessary. The 

selection between measures will be based upon cost-effectiveness, emissions reduction 

potential, ease and timing of implementation, and other appropriate factors. 

Implementation of necessary controls in response to a Level II trigger will take place as 

expeditiously as possible, but in no event later than 18 months after the Illinois EPA 

makes a determination, based on quality-assured ambient data, that a violation of the 

NAAQS has occurred. 

Adoption of additional control measures is subject to necessary administrative and legal 

processes. The Illinois EPA will solicit input from all interested and affected persons in 

the area prior to selecting appropriate control measures. No contingency measure will be 

implemented without providing the opportunity for full public participation. This process 

will include publication of notices, an opportunity for public hearing, and other measures 

required by Illinois law. 

6.2 Commitment to Revise Plan 

As noted in Section 4.5 above, the Illinois EPA commits to review its Maintenance Plan 

eight years after redesignation, as required by Section 175(A) of the CAA. The 

Maintenance Plan revision is intended to ensure continued attainment of the 8-hour ozone 

NAAQS for an additional ten-year period. 

6.3 Public Participation 

In accordance with Section 11 O(a)(2) of the CAA, the Illinois EPA is required to hold a 

public hearing prior to adoption of this Maintenance Plan and submittal to U.S. EPA. 

Public participation in the SIP process was provided for as follows: 

• Notice of availability of the Metro-East 8-Hour Ozone Maintenance Plan 

document and the time and date of the public hearing was published in the 
Belleville News Democrat, East St. Louis Monitor, and Alton Telegraph on 

March 5, 2010 and in the Granite City Press Record Journal on March 7, 2010. 

• The public hearing to receive comments on the Metro-East Maintenance Plan was 

held at 10:30 a.m. on April 8, 2010 at the Illinois Department of Transportation's 

Regional Conference Room at its District 8 Offices at 11 02 Eastport Plaza Drive, 

Collinsville Illinois. 

• A 30-day public comment period was also available after the public hearing to 

receive comments on the Maintenance Plan. A summary of the comments 

received and Illinois EPA's responses thereto was included as part of the initial 

submittal to U.S. EPA. 

6.4 Legal Authority to Implement and Enforce 

The Maintenance Plan must contain a demonstration that the State of Illinois has the 

necessary legal authority to implement and enforce the measures relied upon to attain and 

maintain the NAAQS. Illinois h~s the legal authority to implement and enforce the 

requirements of this SIP submittal pursuant to the Illinois Environmental Protection Act. 
7.0 CONCLUSIONS 

The Metro-East nonattainment area has attained the 1997 0.080 ppm 8-hour ozone 

NAAQS and has complied with the applicable provisions of the CAA required of 

moderate ozone NAAs. Illinois has submitted an attainment demonstration that was 

based on air quality modeling and contains enforceable control measures. The attainment 

demonstration included an RFP Plan which demonstrated the required 15% reduction in 

ozone precursor emissions. Illinois has performed an analysis that demonstrates that the 

Metro-East NAA has attained the 1997 8-hour ozone NAAQS and believes the air quality 

improvements are due to permanent and enforceable control measures. Supporting 

documentation is contained herein. 

The Illinois EPA has prepared a Maintenance Plan that meets the requirement of the 

Clean Air Act. This Maintenance Plan provides for the continued attainment of the 1997 

8-hour ozone NAAQS for a period often years after U.S. EPA has formally redesignated 

the area to attainment. This Maintenance Plan provides adequate contingency measures 

for potential, additional emissions reductions in the event that future violations of the 

1997 8-hour ozone NAAQS are observed in the area. 

The Illinois EPA has prepared a comprehensive emissions inventory of the precursors of 

ozone completed for the "attainment" year 2008, and has prepared projections of the 

emissions inventory to 2015, 2020, and 2025. These emissions projections indicate that 

emissions levels in the Metro-East nonattainment area will continue to remain much 

lower than emissions from the attainment year 2008 levels, thereby maintaining the 

ozone NAAQS in future years. The Illinois EPA commits to continue to operate an 

appropriate air quality monitoring network to verify the maintenance of the attainment 

status once the area has been redesignated. The Illinois EPA has the legal authority to 

implement and enforce all control measures. 

Finally, the Metro-East Maintenance Plan includes year 2008 and 2025 on-road motor 

vehicle emissions budgets for use in transportation conformity determinations to assure 

that any increases in emissions from this sector do not jeopardize continued attainment of 

the 8-hour ozone standard during the ten-year maintenance period. The Metro-East 

Maintenance Plan has been prepared in accordance with the requirements specified in 

U.S. EPA's guidance document, and additional guidance received from U.S. EPA staff. 
APPENDIX A 

Summary of Ambient Air Monitoring Data 

(2007-2009) 
State of Missouri 

County AQS Code 

St. Charles 291(331004 

St. Charles 291831002 

St. Louis City 295100085 

St. Louis 291890014 

St. Louis 291890005 

Jefferson 290990019 

State of Illinois 

County AQS Code 

Jersey 170831001 

Madison 171190008 Madison 171193007 Madison 171191009 

St. Clair 171630010 

Table A.l 

2007-2009 8-hour Ozone Design Values 

for Monitors in the St. Louis Region 

Site Name Design Value 4th High 2007 

Orchard Farm 75 83 

West Alton 78 89 

Blair St 75 87 

Maryland Hts 76 94 

Pacific 71 85 

Arnold/Arnold W 75 87 

Site Name Design Value 4th High 2007 

Jerseyville 70 75 

Alton 72 81 

Wood River 73 86 

Maryville 77 87 

E. St. Louis 70 77 

30 

4th High 2008 

72 

76 

73 

69 

64 

70 

4th High 2008 

69 

68 

67 

70 

64 
APPENDIXB 

Transportation Conformity 

...,, 
TRANSPORTATION CONFORMITY 

This section describes the development of the Metro-East nonattainment area motor 

vehicle emissions budgets associated with the revised Maintenance Plan for the 1997 8-

hour NAAQS. Average summer weekday motor vehicle emissions budgets are being 

proposed for the attainment year 2008 and for the Maintenance Plan year 2025 for the 

ozone precursor pollutants volatile organic material (VOM) and oxides of nitrogen 

(NOx). These budgets were developed consistent with the motor vehicle activity 

assumptions and emissions control strategies incorporated into· the Metro-East 8-hour 

ozone Attainment Demonstration analysis. The enclosed budgets were developed using 

emission factors generated by the United States Environmental Protection Agency's 

(U.S.EPA) MOVES modeL These emission factors were then multiplied by summer 

weekday vehicle miles of travel (VMT) converted by the model from actual and 

projected annual VMT levels. 

Background 

Section 176(c)(4) of the Clean Air Act Amendments of 1990 requires that transportation 

plans, programs, and projects which are funded or approved under Title 23 of the United 

States Code (USC) must be determined to conform with State or Federal air 

implementation plans. A motor vehicle emissions budget is that portion of the total 

allowable emissions allocated to highway and transit vehicle use that are defined in the 

SIP for a certain year. Section 93.101 ofthe rule defines a "control strategy [State] 

implementation plan revision" as a "plan which contains specific strategies for 

controlling the emissions and reducing ambient levels of pollutants in order to satisfy 

Clean Alr Act (CAA) requirements of reasonable further progress and attainment." In 

order to demonstrate conformity to the motor vehicle emissions budget, emissions from 

the implementation of a transportation plan or a transportation improvement program 

(TIP) must be less than or equal to the budget level (40 CFR § 93.118(a)). 

Transportation conformity will be determined based on these proposed on-road motor 

vehicle emissions budgets after the U.S. Environmental Protection Agency (U.S. EPA) 

determines that the budgets meet the adequacy criteria of the transportation conformity 

rule under §93.118(e). The motor vehicle emissions budgets in this submittal are 

adequate as each of the six criteria under §93.118(e) is satisfied. These six criteria 

include: 

1. The submitted control strategy implementation plan revision or Maintenance Plan 

was endorsed by the Governor (or his or her designee) and was subject to a State 

public hearing. 

2. Before the control strategy implementation plan or Maintenance Plan was submitted 

to U.S. EPA, consultation among federal, State, and local agencies occurred; full 

implementation plan documentation was provided to U.S. EPA; and U.S. EPA's 

stated concerns, if any, were addressed; 

3. The motor vehicle emissions budgets(s) is clearly identified and precisely quantified; 
4. The motor vehicle emissions budget(s), when considered together with all other 

emissions sources, is consistent with all applicable requirements for reasonable 

further progress, attainment, or maintenance (whichever is relevant to the given 

implementation plan submission); 

5. The motor vehicle emissions budget(s) is consistent with and clearly related to the 

emissions inventory and the control measures in the submitted control strategy 

implementation plan revision or Maintenance Plan, and 

6. Revisions to previously submitted control strategy implementation plans explain and 

document any changes to previously submitted budgets and control measures, 

impacts on point and area source emissions; any changes to established safety 

margins; and reasons for the changes (including the basis for any changes related to 

emissions factors or estimates of vehicle miles traveled). 

Regarding adequacy criterion #1, this State Implementation Plan and the associated 

motor vehicle emissions budgets have been developed by the Illinois Environmental 

Protection Agency (Illinois EPA), the designated air quality agency for the State of 

Illinois. The public hearing to accept public comment on the original proposed 

Maintenance Plan and budgets was held on April 8, 2010 in Collinsville, Illinois. 

Notification of this hearing was published in the Belleville News Democrat, East St. 

Louis Monitor, and Alton Telegraph on March 5, 2010 and in the Granite City Press 

Record Journal on March 7, 2010. Comments on the proposed Maintenance Plan and 

associated motor vehicle emissions budgets were accepted for 30 days after the public 

hearing. A "Responsiveness Summary" which addressed the written comments received 

was prepared and included in the submission to the U.S.EP A. 

Notification of the revised Maintenance Plan and associated MOVES-based motor 

vehicle emissions budgets will be placed in local area newspapers and on the Illinois 

EPA's web site. Comments will be accepted for 30 days. All comments will addressed 

in a "Responsiveness Summary" which will be included in the final submission to the 

U.S. EPA. 

In compliance with criterion #2 above, an Inter-Agency Conformity Consultation Team 

meeting was held at the offices of the East-West Gateway Council of Governments on 

January 26, 2010. The Consultation Team includes representatives from the Federal 

Highway Administration, the U.S. EPA, the East-West Gateway Council of Governments 

(EWGCOG), the Missouri Department of Transportation, the Missouri Department of 

Natural Resources, the Illinois Department of Transportation (IDOT), and the Illinois 

EPA. At this meeting the development of the proposed Maintenance Plan motor vehicle 

emissions budgets was discussed. The draft Maintenance Plan was also forwarded to the 

U.S. EPA Region V representative for his review and comment. A follow-up meeting of 

the Inter-Agency Consultation Team to discuss the revised motor vehicle emissions 

budgets was held on June 14,2011. 

The motor vehicle emissions budgets proposed and described herein were, in compliance 
with adequacy criterion #5, developed consistent with the methodology and control 

strategy assumptions used in the Metro-East 1997 8-hour Ozone Attainment 

Demonstration as well as the associated Reasonable Further Progress (RFP) plan. The 

effects of these controls are incorporated into the emissions factors produced by the U.S. 

EPA's MOVES model. In response to adequacy criteria 4 and 6, the narrative of the 

Metro-East 8-hour Ozone Maintenance Plan discusses the emissions estimates from other 

sectors and any changes in regulations. Following, in response to adequacy criteria #3, is 

a discussion ofthe inputs and assumptions incorporated into the development of the 

proposed Maintenance Plan motor vehicle emissions budgets. 

Vehicle Miles Traveled: The proposed Metro-East 8-hour Ozone Maintenance Plan 

attainment year 2008 motor vehicle emissions budgets were developed using actual 

annual 2008 county-level vehicle miles travelled (VMT) data from the IDOT. The 2008 

annual VMT for the 4-county (Madison, Monroe, St. Clair and Jersey) Metro-East St. 

Louis 8-hour ozone nonattainment area was 5.878 billion miles. This figure was 

projected to the Maintenance Plan end year, 2025, using an annual growth rate of 1.5 

percent, yielding an annual VMT of7.57 billion. These annual VMT figures are model 

inputs and converted to summer weekday levels. 

Following is a summary of the information and MOVES model assumptions used in the 

development of the draft motor vehicle emissions budgets. 

Meteorological Data: U.S. EPA guidance for the use of the MOVES model requires 

the use of local temperature and absolute humidity data. Average 2008 maximum and 

minimum monthly temperatures for the region were obtained from the National Weather 

Service observations for St. Louis Lambert Airport. Corresponding absolute humidity 

levels were determined for the observed temperatures. These 2008 temperatures and 

absolute humidity values were used in the year 2025 emissions modeling. 

Motor Vehicle Emissions Controls: Beyond the U.S. EPA's federal motor vehicle 

control program emissions standards, the primary local motor vehicle emissions control 

programs that were in place in the Metro-East NAA in 2008 and are projected to still be 

required are a vehicle VM program and the required use of Reformulated Gasoline. 

Inspection and Maintenance (liM): The Illinois VM program in effect since 

2007 requires biennial On-Board Diagnostics II (OBD) testing on all model year (MY) 

1996 and newer (MY96+) light-duty gasoline vehicles, and biennial exhaust idle and gas 

cap testing on MY96+ heavy duty gasoline vehicles including gasoline-powered buses, 

registered in the VM testable area. Motorcycles and diesel vehicles are not subject to 

I/M. The program includes a 4-year grace period for new vehicles. This post-2007 VM 

program was established when the Illinois legislature amended the Illinois Vehicle 

Inspection law in 2005 to (a) end dynamometer testing of vehicles, (b) require an OBDbased program beginning in February 2007, and (c) remove the requirement for testing 

compliant pre-MY96 vehicles. 

The Metro-East vehicle testing domain includes the urbanized areas in Madison Monroe 

and St. Clair Counties. There are no urbanized areas in Jersey County. An "VM 
Coverage" percentage was developed based on the amount ofVMT from vehicles subject 

to the inspection program compared to total area VMT. The liM Coverage percentage 

for the Metro-East 8-hour ozone nonattainment area is 84%. 

Fuels: The use of federal Reformulated Gasoline (RFG) has been required in the 

Metro-East St. Louis NAA since 2007 and the St. Louis, Missouri area since 2001. Since 

the Metro-East NAA is a part of the St. Louis NAA, classified a "southern'' area for 

purposes of motor fuel control programs, southern grade RFG is required and assumed to 

be used in the Metro-East area. The 8-hour ozone Attainment Demonstration assumed 

the use of southern grade RFG in 2008 and beyond. RFG was assumed to contain 1 0% 

ethanol. The MOVES model can account for other fuels, such as E85, natural gas, 

methanol, etc, but for all practical purposes the gallons of such alternative fuels and 

hence the number of vehicles using them is very small compared to the number of 

gasoline and diesel vehicles, therefore, the use of such fuels was not considered. 

Gasoline Sulfur: The federal Tier 2 regulations require gasoline sulfur levels to 

average no greater than 30 parts per million (ppm) with a maximum of 80 ppm 

beginning in 2007. There are no lllinois gasoline sulfur requirements. Therefore, 

the MOVES gasoline sulfur levels were used in the emissions modeling. 

Diesel Sulfur: The federal Tier 2 regulations limit the level of sulfur in diesel 

fuel requiring on- highway diesel fuel to 15 ppm beginning in 2006. There are no 

illinois diesel sulfur requirements. Therefore, the MOVES diesel sulfur levels 

were used in the emissions modeling. 

Fuel Volatility: The volatility of summer RFG, measured as Reid vapor pressure 

(RVP), is not specifically regulated. However, a fuels' RVP is one of the primary 

characteristics controlled in order to meet the RFG performance standards. 

Therefore, the MOVES RVP levels were used in the emissions modeling. 

Registration Distribution: The Registration Distribution is the fraction of vehicles of a 

given vehicle type and age in the fleet of vehicles of that type as a whole. Different 

vehicle types have different RDs A Metro-East area-specific vehicle registration 

distribution profile based upon 2008 information data was developed by Illinois EPA's 

Division of Mobile Source Programs frolfl data provided by the Illinois S~cretary of 

State's Department of Motor Vehicles. This profile is assumed to remain valid for 2025. 

Source Type Population represents the number of vehicles of each MOVES vehicle type 

in the fleet as a whole within the area un<;ler consideration. Accurate local source-type 

populations were not available; therefore the MOVES default fractions modified by 

VMTs by vehicle type were used. 

VMT Temporal Fractions are the VMT fractions of annual VMT by month of the year, 

of weekly VMT by day of the week, and daily VMT by hour of the day. The Illinois 

EPA uses temporal fractions derived from data collected from continuous count stations 

and presented by IDOT. Temporal fractions vary by road type. 
Speed distributions are the fractions of VMT on a given road type by given vehicle 

types in various speed ranges (bins). Thus, on a typical Urban Arterial, a small fraction 

of the vehicles are traveling at less than 10 mph (plus or minus 5 mph), more at 20 mph, 

more at 30mph, most at 40 mph, less at 50 mph, and so on. These fractions differ by 

hour of the day-in more congested conditions during rush hours, the maximum fraction 

might be in the 30 mph range rather than the 40 mph range. The Illinois EPA relied on 

the MOVES model default speed distributions when aggregating emissions (or emission 

rates) for vehicles at different speeds. 

Ramp fraction is the fraction of total VMT on limited-access highways such as 

Interstates that is from on- and off-ramps to or from those highways. Driving on limitedaccess highways is more or less at uniform speed, but driving on ramps involves 

considerable acceleration and deceleration; and these speed changes affect emissions. 

The default MOVES Ramp Fractions are 15% on Rural Interstates, 10% on Urban 

Interstates, and 2% on Other Freeways and Expressways. Illinois does not have actual or 

observed Ramp Fraction data; therefore the MOVES default values were used. 

Roa·d Type Distribution is the (fraction of) VMT on different road categories within an 

area under consideration. The Illinois EPA uses VMT data by HPMS functional class 

(FC) published by IDOT as the basis of its emission calculations. The Road Type 

Distribution for Rural Interstates in a county is the county's Rural Interstate VMT 

divided by the county's total all-road-type VMT. Similar calculations can be made for 

MOVES road types and vehicle types. 

Motor Vehicle Emissions Budgets 

Us~g the emissions factors and summer weekday VMT generated by the MOVES 

model, following are the Attainment Year 2008 and Maintenance Plan Year 2025 MetroEast S. Louis 8-hour ozone motor vehicle emissions budgets for use in determining 

transportation conformity. 

Proposed Metro-East 

8-hour Ozone Maintenance Plan 

2008 and 2025 

Motor Vehicle Emissions Budgets 

(tons per ozone season weekday) 

Year VOM NOx 

2008 17.27 52.57 

2025 5.68 15.22 
Attachment 17 

Agency Rulemaking Proposal: Enhanced Inspection 

and Maintenance (1/M) Regulations, Amendments 

to 35 Ill. Adm. Code Part 240, filed with the Board 

on August 21, 2000 

(certain documents omitted) 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page· 1287 
Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1288 
i 

ii 

':! 

' 

u 

R.ECEIVEiJ; 

CLEHKS ()t:c<e-r--··~ 

BEFORE THE ILLINOIS POLLUTION CONTROL BOARD 1'\IJG 2 1 2000 

IN THE MATTER OF: 

ENHANCED VEHICLE INSPECTION AND 

MAINTENANCE (I/M) REGULATIONS: 

AMENDMENTS TO 35 ILL. ADM. CODE 

PART 240 

NOTICE 

To: Dorothy Gunn, Clerk 

STATE OF iLUNuiS 

Pollution Control Board 

RO 1- /c...;l_ 

(Rulemaking) 

Robert Lawley 

Illinois Pollution Control Board 

State of Illinois Center 

Chief Legal Counsel 

Department of Natural 

100 West Randolph, Resources 

suite 11-500 

Chicago, Illinois 60601 

Matthew Dunn 

Environmental Bureau 

Office of the Attorney General 

James R. Thompson Center 

100 W. Randolph, 12th Floor 

Chicago, Illinois 60601 

524 South Second Street 

Springfield, Illinois 

62701-1787 

PLEASE TAKE NOTICE that I have today filed with the Office 

of the Clerk of the Pollution Control Board the REGULATORY 

PROPOSAL FOR ENHANCED INSPECTION AND MAINTENANCE (I/M) 

REGULATIONS: AMENDMENTS TO 35 ILL. ADM. CODE PART 240, AND MOTION 

FOR WAIVER OF CERTAIN REQUIREMENTS of the Illinois Environmental 

Protection Agency a copy of which is herewith served upon you. 

By: 

Division of Counsel 

DATED: August 21, 2000 

1021 North Grand Avenue, East 

Springfield, Illinois 62702 

217/782-5544 

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BEFORE 

A\JG 2 1. '2.00\l 

BOARD STI':fE OF \LUNGtS _ 

Po!btion Control Board 

IN THE MATTER OF: ,;. •• , .... o .• "'" •--' •··~)''""'··"'""'"'" .. 

ENHANCED VEHICLE INSPECTION AND --j ROl-/,). 

MAINTENANCE (I/M) REGULATIONS: ) (Rulemaking) 

AMENDMENTS TO 35 ILL. ADM. CODE ) 

PART 240 ) 

PROPOSAL OF REGULATIONS 

The Illinois Environmental Protection Agency moves that the 

Illinois Pollution Control Board adopt the attached regulations. 

t 21', 2000 

Grand Avenue, East 

Illinois 62702 

Respectfully submitted, 

ENVIRONMENTAL PROTECTION AGENCY 

OF THE STATE OF ILLINOIS 

By: 

-,) _ r

1 GL ' . j /\;1}71]/i)JA-- I; • )! f!Jb.Nilf4 

THomas V. Skinner 

Director 

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BEFORE THE ILLINOIS POLLUTION CONTROL 

IN THE MATTER OF: 

ENHANCED VEHICLE INSPECTION AND 

MAINTENANCE (I/M) REGULATIONS: 

AMENDMENTS TO 35 ILL. ADM. CODE 

PART 240 

ROl-/~ 

(Rulemaking) 

MOTION FOR WAIVER OF REQUIREMENTS 

NOW COMES Proponent, ILLINOIS ENVIRONMENTAL PROTECTION 

AGENCY ("Agency") by its attorney, Christopher P. Demeroukas, 

pursuant to 35 Ill. Adm. Code 102.103 and moves that the Illinois 

Pollution Control Board ("Board") waive certain filing 

requirements with regard to the requirements that the Agency file 

the original and nine copies with the Board, that the Agency 

submit an entire copy of the proposal to the Attorney General, 

that the Agency submit an entire copy of the proposal to the 

Department of Natural Resources ("DNR"), and that the Agency 

submit copies of all documents upon which it relied. In support 

of its Motion, the Agency states as follows: 

1. Sect.ion 102.120 of the Board's Procedural Rules 

requires that the original and nine copies of each proposal be 

filed with the Clerk. This entire regulatory proposal including 

supporting documentation will consist of several hundred pages 

1 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1291 

~I 
Given the length of the proposal and the resources required to 

provide nine copies, the Agency requests that it be allowed to 

file the original and five complete copies of the proposal plus 

four partial copies, the latter consisting of pleadings and the 

proposed rules absent supporting exhibits. 

2. Section 102.120 of the Board's procedural rules also 

requires that a regulatory proposal be served on the Attorney 

General. On August 1, 2000, the Agency discussed the matter with 

Matthew Dunn, Chief of the Environmental Bureau/Chicago, 

Environmental Control Division of the Attorney General's Office, 

who agreed that the Agency need not supply that office with a 

copy of the entire proposal, provided that his office be formally 

notified that a proposal has been made, that his office receive 

the Statement of Reasons, and where the proposal could be 

reviewed. 

3. Section 102.120 also requires that a regulatory 

proposal be served on the DNR. On August 1, 2000, the Agency 

discussed the matter with Robert Lawley, Chief Legal Counsel of 

the DNR who agreed that the Agency need not supply that office 

·with a copy of the entire proposal, provided that his office be 

formally notified that a proposal has been made and where the 

proposal could be reviewed. 

2 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1292 
WHEREFORE, for the reasons set forth above, the Agency moves 

that, in accordance with the filing proposal set forth 

hereinabover the Board waive the following requirements and 

accept the Agency's alternate proposal: 

(a) waive the requirement that the Agency provide the original 

and nine copies of the proposal and instead allow the Agency 

to provide one complete original, five complete copies, and 

four partial copies, the latter consisting of pleadings and 

the proposed rules absent supporting exhibits; 

(b) waive the requirement that the Agency provide a copy of the 

proposal to the Attorney General; and 

(c) waive the requirement that the Agency provide a copy of the 

proposal to the DNR. 

DATED: August 2l, 2000 

l02l North Grand Avenue, East 

Springfield, Illinois 62702 

217/782~5544 

ENVIRONMENTAL PROTECTION AGENCY 

OF THE STATE OF ILLINOIS 

By: :!1 /i-;;/J:~. i;Z~ ~fi'ristoph P. Demeroukas 

Assistant Counsel 

Division of Legal Counsel 

3 

THIS FILING IS SUBMITTED ON 

RECYCLED PAPER 

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BEFORE THE ILLINOIS POLL,UTION CONTROL BOARD 

IN THE MATTER OF: 

ENHANCED VEHICLE INSPECTION AND 

MAINTENANCE (I/M) REGULATIONS: 

AMENDMENTS TO 35 ILL .. ADM. CODE 

PART 240 

STATEMENT OF REASONS 

ROl-/2--

(Rulemaking) 

!l .. lECEiV:~lED 

CLERK'S OFFJCE 

StATE OF ItUNOfS 

Pollution Control Board 

The Illinois Environmental Protection Agency (''Agency") 

hereby submits this Statement of Reasons to the Illinois 

Pollution Control Board ("Board") in SUj)port of the attached 

proposal of regulations in accordance with 35 Ill. Adm. Code 

102.12l(b). The adoption by the Board of these proposed 

amendments to 35 Ill. Adm. Code Part 240 is authorized by Section 

27 (excluding subsection (b)) of the Illinois Environmental 

Protection Act ("Act") [415 ILCS 5/27 (1998)] and mandated by 

Section 13B-20(a) of the Vehicle Emissions Inspection Law of 1995 

("Inspection Law1

r) [625 ILCS 5/13B-20 (a} {1998)]. 

I. INTRODUCTION 

Sections 182(b) and l82(c) of the Clean Air Act, as amended 

ln 1990 ("CP.A") [42 U.S,C. §7582 (b) and §7582 (c)], require the 

implementat ~on of ''inspection and maintenancen ( '' I/M'1 ) programs 

in areas not meeting National Ambient Air Quality Standards 

("NAAQS") for ozone and/or carbon monoxide. The CAA specifies 

the use of "basic" or "enhanced" I/M programs. Ba:sic programs 

are required in "moderaten and '\marginal-'1 ozone nonattainment 

1 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1294 
areas with existing I/M programs. Enhanced programs are mandated 

for "serious," nsevere," and ''extreme'1 ozone nonattainment areas 

with urbanized populations of 200,000 or more. States required 

to develop either basic or enhanced I/M programs are required to 

submit for approval to the United States Environmental Protection 

Agency ("USEPA") revisions to their State Implementation Plans 

("SIP"s) which fully describe and assure implementation of a 

satisfactory I/M program. Illinois contains two areas classified 

as nonattainment for ozone: the Chicago metropolitan area which 

is classified as "severe"; and the Metro-East area in and around 

East St. Louis which is classified as "moderate." US EPA has 

promulgated both final regulations and interim guidelines 

containing testing standards and procedures for use in a state's 

enhanced I/M emissions testing program [40 CPR 51 and 40 CPR 85] • 

Illinois' Inspection Law provides the required authority for the 

Agency to enable Illinois to meet USEPA's enhanced I/M testing 

and performance requirementS. 

The Board has previously adopted the standards necessary for 

implementation of the enhanced I/M program [R94-19 at 18 Ill. 

Reg. 18228 (eff. Dec. 14, 1994), R94-20 at 18 Ill. Reg. 18013 

(eff. Dec. 12, 1994), R98-24 at 22 Ill. Reg. 13723 (eff. Jul. 13, 

1998, expedited correction at 22 Ill. Reg. 21120, eff. Jul. 13, 

1998)]. This proposal represents the means by which certain 

revisions of the mobile source standards necessary for the 

2 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1295 
refinement of the enhanced I/M program will be adopted. The 

proposal contains a necessary extension for implementing the 

"pass/fail" portion of on-board diagnostic ("OBD") testing, 

retains current \\start-up" hydrocarbon and carbon monoxide 

standards for certain categories of older vehicles, and includes 

clarifica.tions to the provisions for existing standards. 

The Agency today is proposing that the following rules be 

<>dopted by the Board under authority of Section 2D{a) of the 

Vehicle Emissions Inspection Law of 1995 [625 ILCS 5/13B-20(a) 

(1998] in order to enable Illinois to meet feder<>l and state 

mandated enhanced emissions testing requirement.s. 

II. BASIS FOR SUBMITTAL 

This regulatory proposal is properly submitted to the Board 

under Section 20(a) of the Vehicle Emissions Inspection Law of 

1995 [625 ILCS 5/13£-20 (a) (1998]. That section states; in 

relevant part, that the Board is required to adopt standards 

necessary for the enhanced I/M program within 120 days after the 

Agency's submission of such standards to the Board, and that: 

" ... subsection (b) of Section 27 of the Environmental 

Protection Act [415 ILCS 5/27] and the rulemaking provisions 

of the Illinois Administrative Procedure Act shall not apply 

to rules adopted by the Board under this subsection." 

The Agency therefore believes that the proposed rules 

contained herein constitute those rules referenced by the above 

3 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1296 
statutory requirement, and that the Board will insure adoption of 

such rules within the required timeframe. 

III. GEOGRAPHIC REGIONS AND SOURCES AFFECTED 

The geographic areas subject to the Agency's proposal are 

certain counties and parts of counties located ln the Chicago and 

the Metro-EaBt ozone ·nonattainment areas and as identified in 

Sections 13B-5 and 138-15 of the Inspection Law. The Agency's 

proposal would apply to motor vehicles and their owners to the 

extent and in the manner specified by Sections 138-15, 13B-20, 

138-25, and 13B-30 of the Inspection Law. 

IV. PURPOSE AND EFFECT OF THE PROPOSAL 

Federal regulations require the adoption by states of 

standards that result in a reduction of vehicle emissions through 

testing procedures meetingr or exceeding/ the amount of emissions 

that would be reduced if its "model" I/M program design was 

implemented; USEPA requires certain 11 design elements" to be a 

part of any enhanced I/M plan, but allows states to vary certain 

program inputs as long as the plan achieves the same or greater 

reductions in emissions than those required by USEPA's applicable 

performance standard.' As noted above, the Board has adopted 

1 40 CFR 5l.351 (60 FR 48035). Illinois is required to meet the "low 

enhanced" performanCe standard in Section 51.351(g). 

4 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1297 
certain required standards for Illinois' enhanced I/M program, 

and the Agency has adopted certain necessary procedural rules. 

This proposal is designed to promote the acceptance of and 

adherence to the enhanced I/M program, and to refine certain test 

requirements by retaining current \\start-up'' emissions Standards 

for certain categories of older vehicles, and by extending for 

one year the implementation of "pass/fail'' On-Board Diagnostic 

( "OBD11 ) testing, and. to make necessary .clarifications to the 

current rule. 

V. TECHNICAL FEASIBILITY AND ECONOMIC REASONABLENESS 

The technology for implementing the standards proposed by 

these rules is available and re.liable. There are no new hardware 

requirements, and only a few minor software ·changes need to be 

developed and implemented to appropriately implement these 

proposed changes. 

VI. COMMUNICATION WITH INTERESTED PARTIES 

These proposed amendments are relatively minor adjustments 

to the Enhanced I/M program. The Board has held rulemaking 

proceedings on this topic in 1994 and 1998 during which the 

rulemakings necessary for establishment of the enhanced I/M 

program were presented for the Board's approval and adopted. The 

Agency has also adopted procedural rules for the required 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1298 
enhanced I/M test procedures in 1996 and 1998, which again 

entailed a public hearing concerning the enhanced I/M program'. 

Therefore, the extent of the Agency's outreach efforts has 

been to those parties primarily concerned with the promulgation 

of the enhanced I/M emissions standards and the establishment of 

the program. The Agency has participated in several discussions 

with State and local officials, other State Executive Branch 

agencies, interested contractors, and the USEPA during the course 

of developing the program. The Agency's contacts with USEPA have 

been particularly extensive due to the reliance the Agency places 

upon USEPA to provide necessary rules and guidance for 

establishing or changing test standards and procedures, and also 

based upon their role of ultimately approving the sufficiency of 

our program. 

VII. THE AGENCY'S PROPOSAL 

The proposed rules amend 35 Ill. Adm. Code 240. The 

following is a section-by-section summary of the Agency's 

proposal. 

SUBPART A: DEFINITIONS AND GENERAL PROVISIONS 

Generally, the Agency is proposing to add necessary 

2 Amendments to 35 Ill. Adm. Code 276, adopted at 20 Ill. Reg. 8456, 

effec-tive June 14, 1996. 

6 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (1/M) Program: Attachments Page- 1299 
definitions to the current rule, eliminate sections referring to 

the superceded Vehicle Emissions Inspection Law [625 ILCS 5/13A 

(1998)], and add a new reference to be used. 

1. Section 240.102 Definitions 

The Agency proposes amending this section to include two 

definitions: "Adjusted Loaded Vehicle Weight" and "Vehicle Curb 

Weight 1

' to incorporate necessary federal guidance. 

2. Section 240.104 Inspection 

The Agency proposes to amend this section by eliminating 

subsection (a) due to the fact that the provisions of the Vehicle 

Emissions Inspection Law (625 ILCS 5/l3A) have been superceded by 

the implementation of the enhanced I/M program in February 1999 

[Vehicle Emissions Inspection Law of 1995 (625 ILCS 5/13B)]. 

3. Section 240.105 Penalties 

Similarly to the proposed changes to section 240.104, the 

Agency proposes to amend this section by eliminating subsection 

(b) to reflect the fact that the provisions of the Vehicle 

Emissions Inspection Law (625 ILCS 5/13A) have been superceded by 

the implementation of· the enhanced I/M program in February 1999. 

4. Section 240.106 Determination of Violation 

7 

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The Agency proposes to eliminate from subsection (b) the 

reference to Section 240.124, which is proposed to be eliminated 

later in this statement of reasons. 

5. Section 240.107 Incorporations by Reference 

The USEPA has issued guidance in April 2000 that the Agency 

is using in part in developing its regulations and the Agency is 

proposing to add that reference to. this s.ection. 

SUBPART B: EMISSIONS 

The Agency proposes to eliminate standards contained in 

Sections 240.124 and 240.125 that have been superceded by the 

establishment of the enhanced I/M program in February 1999. 

1. Section 240.124 Vehicle Exhaust Emissions Standards 

The Agency proposes to eliminate this section since its 

standards have been superceded by the enhanced I/M program. 

Prior to implementation of the enhanced I/M program in February 

1999, these standards were used for the "basic" I/M test which 

mainly consisted of the "idle" test. Since February 1999, 

vehicles which do not receive the transient loaded mode exhaust 

test (i.e., the IM240 test) have received a revised "idle" test. 

The standards for thi$ new \\idle" test are currently contained 

in Subpart D of this Part. 

8 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 130 I 
2. Section 240.125 Compliance Determination 

The Agency proposes to eliminate this Section for the same 

reason it proposes to eliminate Section 240.124; that is, under 

the enhanced I/M program, the applicable compliance determination 

for vehicles receiving an "idle" test are found in subpart D of 

this Part. 

SUBPART E: TRANSIENT LOADED MODE TEST EMISSION STANDARDS 

Generally, the Agency proposes to modify this Subpart to 

retain the current ''start-up" emissions stapdards for model year 

1981 through model ·year 1986 light duty vehicles ("LDVs"), light 

duty trucks 1 ( "LDT1s") , and light duty trucks 2 ( "LDT2s"). This 

is to help insure the integrity of the emissions test program as 

a whole. 

1. Section 240.162 Vehicle Exhaust Emission Start-Up 

Standards 

The Ag~ncy proposes to retain the current "start-UpJ/ 

standards for model year 1981 through model year 1987 LDVs, 

LDT1s, and LDT2s. The Agency projects that should "final" 

standards be applied on February 1, 2001 (as is currently 

required by Section 240 .163), failure rates for these vehicles 

would increase substantially, without a correspondingly adequate 

9 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1302 
level of emissions reductions. Specifically, the Agency analyzed 

the potential impact had "final" standards been in place for 

these older model year vehicles, and determined failure rates 

would have been substantially higher. 

For instance, failure rates for model year 1981 vehicles 

would rise from 29.5% to 58.6%, with substantial increases for 

other model years studied (p. 3, "Technical Support Document -

Revisions to Transient Loaded Mode Emission Standards for 1981 -

1987 Model Year Vehicles: Amendments to 35 Ill. Adm. Code 240," 

Illinois EPA, August 2000) 

Applying "final" standards to older vehicles significantly 

raises the cost of the p~ogram to this group, since many more 

vehicles will fail the enhanced I/M test. Illinois' 2002 9% Rate 

of Progress ( ~\20 02 ROP") plan can accommodate a certain amount of 

credit losses from the 1/M program (approximately 2.0 tons per 

day). This means relief, in the form of retaining current, 

"start-up" standards, can be extended to model year 1981 through 

1987 vehicles. Extending relief past model year 1987 vehicles 

would not allow the state to meet its requirements under the 2002 

ROP (p. 5, "Technical Support Document - Revisions to Transient 

Loaded Mode Emission Standards for 1981 - 1987 Model Year 

Vehicles: Amendments to 35 Ill. Adm. Code 240," Illinois EPA, 

August 2000). 

The Agency therefore believes that "start-up" standards 

10 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1303 
should be continued for model year 1981 through 1987 vehicles, 

due to the heightened cost to owners of older vehicles should 

"final" standards be applied, the minimal amount of additional 

emissions reductions should "final" standards be applied to these 

vehicles, and the fact that granting relief for this category of 

vehicles is possible under Illinois' 2002 ROP plan. 

2. Section 240.163 Vehicle Exhaus-t Emission Final 

Standards 

l'he Agency proposes to modify this Section 240.163 to be in 

accord with the changes proposed to Section 240.162 above to not 

implement "f.inal" exhaUst emissions standards for model year 1981 

through model year 1986 LDV, LDT1, and LDT2 vehicles. 

SUBPART H: ON-BOARD DIAGNOSTIC (OBD) TEST STANDARDS 

The Agency is proposing to extend implementation of 

"pass/fail" OBD testing until January 1, 2002. 

Section 240.191 Applicability 

Currently, the Agency's emissions testing contractor is 

performing '\advisory" OBD tests. This consists of attempting to 

gather information from 1996 and newer vehicles presented for 

testing with OBD ports to determine if one or more emissions 

control components or systems is not functioning properly and is 

11 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page- 1304 
in need of repair. Instead of failing or rejecting a vehicle, a 

motorist is notified that his or her vehicle would have failed 

had the test been a mandatory part of the inspection. 

This section currently requires implementation of 

"pass/fail" OBD testing on January 1, 2001. USEPA has received 

information from a number of states and testing contractors that 

indicates problems with the acquisition and analysis of data from 

certain vehicles' OBD ports. The Agency understands that a 

formal USEPA proposal will allow states to extend implementation 

of "pass/fail 11 testing to J'anuary 1, 2002 or beyond is irnminent 1 

in order to provide states ari.d contractors with time tO rectify 

these problems. The Agency believes that this is a necessary 

period to adequately address the current problems, and is 

proposing to adopt a one-year extension in accordance with 

USEPA's anticipated proposal (see Exhibit). 

2. Section 240.193 Compliance Determination 

The Agency proposes a minor "clean up" to the test of this 

Section to indicate that it has already adopted the referenced 

rules at 35 Ill Adm. Code 276. 

1. 

TABLES 

Section 240. TABLE A 

12 

Vehicle Exhaust Emission 

Start-Up Standards 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1305 
The. Agency proposes to change th" d"finitions for the 

"1996+" leg,nds in this table to reflect the new adjusted load 

vehicle weight definition in Section 240.102. 

2. Section 240. TABLE B Vehicle Exhaust Emission 

Final standards 

Similarly to SeCtion 240. TABLE A, the Agency proposes to 

modify the current legend for "1996+"' vehicles in this Section to 

reflect the new definition of adjusted load vehicle weight 

contained in Section 240.102. 

3. Section 240. TABLE C VehicJ.e Exhaust Emission 

Fast-Pass Standards 

The Agency proposes to clarify the introductory paragraphs 

in each of the Subsections (a), (b), and (c) . No new standards 

or meanings are being introduced; this just corrects error-s made 

in previous federal guidance and relied upon by the Agency in 

prior rulemakings, and clarifies the applicability of these 

standards. 

The amendments proposed above meet the requirements of the 

Inspection Law to provide the necessary standards for a 

comprehensive, enhanced I/M test program. 

13 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1306 
VIII. CONCLUSION 

WHEREFORE, for the reasons stated above, the Agency hereby 

submits this regulatory proposal and requests the Board to adopt 

these rules for the State of Illinois. 

DATED: August 2'l, 2000 

1021 North Grand Avenue, East 

Springfield, Illinois 62702 

217/782-5544 

Respectfully submitted, 

14 

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BEFORE THE ILLINOIS POLLUTION CONTROL BOARD AUG 2 I 2000 

IN THE MATTER OF: 

ENHANCED VEHICLE INSPECTION h~D 

MAINTENANCE (I/M) REGULATIONS: 

AMENDMENTS TO 35 ILL. ADM. CODE 

PART 240 

R01/dJ-. 

(Rulemaking) 

APPEARANCE 

The undersigned, as one of its attorneys, hereby enters an 

Appearance on behalf of the Proponent, the Illinois Environmental 

Protection Agency. 

DATED: August 2L 2000 

1021 North Grand Avenue, East 

Springfield, Illinois 62702 

217/782-5544 

ENVIRONMENTAL PROTECTION AGENCY 

OF THE STATE OF ILLINOIS ~~ 

By: ~/ =-:- ---~:::P~~ Christopher . Demeroukas 

Assistant Counsel 

Division of_ Legal Counsel 

THIS FILING IS SUBMITTED ON 

RECYCLED PAPER 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1308 
BEFORE THE ILLINOIS POLLUTION CONTROL BOARD 

IN THE MATTER OF' 

ENHANCED VEHICLE INSPECTION AND 

MAINTENANCE (I/M) REGULATIONS, 

AMENDMENTS TO 35 ILL. ADM. CODE 

PART 240 

R01- ;;;l_ 

(Rulemaking) 

TABLE OF CONTENTS OF REGULATORY SUBMITTAL 

RECE!!'VED 

Ci _Fhti<'S (1f.!t:;-r:F 

AUG 2 1 2000 

STATE OF iLLINOIS 

Pollution Cor;lro/ Board 

1. Cover sheet indicat_ing submittal under Section 20 of the Vehic.le 

Emissions Inspection Law of 1995 [625 II,CS 5/13B-20 (1998)] 

2. Table of Contents of Regulatory Submittal 

3 ~ Notice of Filing of Proposal 

4. Appearance of ChriStopher P. Demeroukas, Assistant Counsel, for 

the Illinois Envirohm~ntal Protection Agency 

5. Statement of Submittal by Director Thomas V. Skinner 

6. Motion for Waiver of Certain Requirements 

7. summaries of Testimony 

(a) Summary of Testimony of Elizabeth R. Tracy 

(b) Sumruary of Testimony of James R. Matheny 

8. Statement of Reasons 

9. First Notice Form for 35 Ill. Adm. Code 240 

lO. Proposed Amendments to Part 24_0 

(a) Five (5) One-Sided Copies for the Secretary of State 

(b) Ten (10) Paginated Copies of the Proposed Amendments 

11. Technical Support Document 

12-

Technical Support Document - Revisions to Transient Loaded Mode 

Emission Standards for 1981 - 1987 Model Year Vehicles: 

Amendments to 35 Ill. Adm. Code Part 240, Illinois Environmental 

Protection Agency 1 -Bureau of Air, Division of Vehicle Inspection 

and Maintenance, Springfield 1 Illinois (August 2000) 

Documents Relied Upon (Note: an asterisk (*) indicates the 

document that the Agency has provided for the Board in this 

proposal packet.) (one copy only of each) 

(a) The Clean Air Act as amended in 1990 (42 u~s.c. Sec. 7401 et 

1 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1309 
seq.) 

{h) \\15 Percent Rate-Of-Progre-ss Plan for the Chicago Ozone 

Nonattainment Area, 1990-1996, Revi~ion to the Illinois 

State Implementation Plan for Ozone'', Illinois Environmental 

Protection Agency, November, 1993. 

(c) "Supplement to 9% Rate-Of-Progress Plan for the Chicago 

Ozone Nonattainment Area, 1997-1999, Revisiori to the 

Illinois State Implementation Plan for ozone, AQPSTR 1-00, 

Illinois Environmental Protection Agency, February, 2000. 

*{d) ~Approval and 'Promulgation of State Implementation Plan; 

Illinois•, 62 FR 66279 {1997). 

*(e) The Vehicle Emissions Inspection Law of 1995 [625 ILCS 5/13B 

(1998) l 

*(f) United States Environmental Protection Agency (USEPA), 

Transportation and Regional Programs Division, Office 

of Transportation and Air Quality, "IM240 & Evap 

Technical Guidance," Report EPA420-R-0.0-007 (April 

2000), 2565 Plymouth Road, Ann Arbor, MI 48105. 

13. Exhibit 

Letter from Cheryl Newton, Assistant Director, Division of Air 

ahd Radiation, United State-s Environmental Protection Agency -

Region V, Chic~go, Illinois, to David J. Kolaz, Chief, Bureau of 

Air, Illinois Environmental Protection Agency., Springfield, 

IUinois (August 21\;. 2000). 

14. Proof of Service 

15. Disk in Microsoft Ward 1997 containing: 

(a) Proposed Amendments to Part 240 {arnend240. doc) 

(b) First Notice Form for 35 Ill. Adm. Code 240 (not240.doc) 

ENVIRONMENTAL PROTECTION AGENCY 

OF THE STATE OF IL INOI' ,~~1 ~ 

By, ,/::;~ ~M../--._ hristopher . Demeroukas -

Assistail_t counsel 

Division of Legal Counsel 

DATED' August 2f.. 2000 

1021 North Grand Avenue, East 

Springfield, Illinois 62702 

217/782-5544 

2 

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Illinois Ozone SIP Revision. Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page· 1310 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED AMENDMENTS 

1) Heading of the Part: Mobile Sources 

2) Code Citation: 35 Ill. Adm. Code 240 

3) Section Numbers: Pro:eosed Action: 

240.102 Amended 

240.104 Amended 

240.105 Amended 

240.106 Amended 

240.107 Amended 

240.124 Repealed 

240.125 Repealed 

240.162 Amended 

240.163 Amended 

240.165 Amended 

240.191 Amended 

240.193 Amended 

Section 240.TABLE A Amended 

Section 240 .TABLE B Amended 

Section 240.TABLE c Amended 

4) Statutory Authority: 

625 ILCS 5/13B-20, and 415 ILCS 5/27 (1998) 

5) A Compl.ete Description of the Subjects and Issues Involved: 

The proposed rules contain modifications to the enhanced 

vehicle inspection and maintenance program currently being 

conducted in the metropoli t.an Chicago and .Metro East St. 

Louis areas. It incorporates the retention of current 

"start-up" standards for certain model year 1981 through 

1987 light duty vehicles, light duty truck 1 vehicles, and 

light duty truck 2 vehicles, delays implementation of 1

'pass/fail" on-board diagnostic ( "OBD") testing for one 

year 1 and makes certain minor clarifications and 

correctionsto the current rule. The Agency and the Board 

are required by the Vehicle Emissions Inspection Law of 1995 

to adopt these measures for the continuing implementation of 

the enhanced I/M program within 120 days of submittal [625 

ILCS 5/13B-20 (1998)]. 

6) Will this proposed rule replace an emergency rule currently 

in effect? Yes X No 

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7) Does this rulemaking contain an automatic repeal date? 

--------------~Y~e~s~ X No 

8) Does this proposed rule (amendment, repealer) contain 

incorporations by reference? Yes 

9) Are there any other proposed amendments pending on this 

Part? No 

10) Statement of Statewide Policy Obiectives: 

These rules will enable Illinois to meet federal statutory 

requirements for enhanced I/M testing as required by the Clean 

Air Act, as amended in 1990 ("CAA"). These rules do not create 

or enlarge a state mandate as defined. in 30 ILCS 805/3 (b). · 

11) Time, Place, and Manner in which interested person may 

comment on this proposed rulemaking: 

Send Written comments concerning R01-

publication in the Illinois Register to: 

Dorothy Gunn 

Clerk of the Pollution Control Board 

100 West Randolph Street 

Suite 11-500 

Chicago, Illinois 60601 

and 

Christopher P. Demeroukas 

Assistant Counsel 

Illinois Environmental Protection Agency 

Division of Legal Counsel 

1021 North Grand Avenue, East 

Springfield, Illinois 62702 

12) Initial Regulatory Flexibility Analysis: 

within 45 days of 

A) Date rule 

Office of 

Affairs: 

was submitted to the Business Assistance 

the Department of Commerce and Community 

N/A 

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NOTICE OF PROPOSED AMENDMENTS 

B) Types of small businesses affected: N/A 

C) Reporting, bookkeeping or other procedures required for 

compliance: N/A 

D) Types of professional skills necessary for compliance: 

N/A 

l3) Regulatory agenda on which this rulemaking was summarized: 

July 2000 

The full text of the Proposed Rule(s) begins on the next page: 

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TITLE 35: ENVIRONMENTAL PROTECTION 

SUBTITLE B: AIR POLLUTION 

CHAPTER I: POLLUTION CONTROL BOARD 

SUBCHAPTER k: EMISSION STANDARDS AND LIMITATIONS FOR MOBILE 

SOURCES 

Section 

240.101 

240.102 

240.103 

240.104 

240.1.05 

240,106 

240.107 

Section 

240.121 

240.122 

240.123 

240.124 

240.125 

PART 240 

MOBILE SOURCES 

SlJBP ART A: DEFJNITIONS AND GENERAL PROVISIONS 

Preamble 

Definitions 

Prohibitions 

Inspection 

Penalties 

Determination of Violation 

Incorporations by Reference 

SUBPART B: EMISSIONS 

Smoke Emissions 

Diesel Engine Emissions Standards for Locomotives 

Liquid Petroleum Gas Fuel Systems 

Vehicle Exhaust Emission Standards 

Compliance Determination 

SUBPART C: HEAVY-DUTY DIESEL SMOKE OPACITY STANDARDS AND TEST 

PROCEDURES 

Section 

240.140 

240.141 

Applicability 

Heavy-Duty Diesel Vehicle Smoke Opacity Standards and Test Procedures 

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SUBPART D: STEADY-STATE IDLE MODE TEST EMISSION STANDARDS 

Section 

240.151 

240.152 

240.153 

Applicability 

Steady-State Idle Mode Vehicle Exhaust Emission Standards 

Compliance Determination 

SUBPART E: TRANSIENT LOADED MODE TEST EMISSION STANDARDS 

Section 

240.161 

240.162 

240.163 

240.164 

240.165 

Section 

240.171 

240.172 

240.173 

Applicability 

Vehicle Exhaust Emission Start-Up Standards 

Vehicle Exhaust Emission Final Standards 

Vehicle Exhaust Emission Fast-Pass Standards 

Compliance Determination 

SUBPART F: EVAPORATIVE TEST STANDARDS 

Applicability 

Evaporative System Integrity Test Standards 

Evaporative System Purge Test Standards (Repealed) 

ScJBPART G: ON-ROAD REMOTE SENSING TEST EMISSION STANDARDS 

240.181 

240.182 

240.183 

240.191 

240.192 

240.193 . 

Applicability 

On-Road Remote Sensing Emission Standards 

Compliance Determination 

SUBPART H: ON-BOARD DIAGNOSTIC TEST STANDARDS 

Applicability 

On-Board Diagnostic Test Standards 

Compliance Determination 

240.Appendix A Rule into Section Table 

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240.Appendix B Section into Rule Table 

240.Tahle A 

240.Table B 

24Q.Table C 

Vehicle Exhaust Emission Start-Up Standards 

Vehicle Exhaust Emission Final Standards 

Vehicle Exhaust Emission Fast-Pass Standards 

AUTHORITY: Implementing Sections 9, I 0 and 13 and authorized by Section 27 aad--

~of the Environmental Protection Act [415 ILCS 5/9, 10, 13, and 27, ooa28.5] and 

Section 13B-20 of the Vehicle Emissions Inspection Law of 1995 [625 ILCS. 5/13B-20]. 

(sse 8eetiaR IQ afP.A. 90 ~75, e!Ieeti,•e Aug>~st 16;4-99+1. 

SOURCE: Adopted as Chapter 2: Air Pollution, Part VII: Mobile Sources, filed and 

effective Aprill4, 1972; codified at 7 Ill. Reg. 13628; arnendedinR85-25, at lOTI!. 

Reg. 11277, effective June 16, 1986; amended in R90-20 at 16 Ill. Reg. 6184, effective 

April 7, 1992; amended in R94-20 at 18 Ill. Reg. 18013, effective December 12, 1994; 

amended in R94-19 at 18 Ill. Reg. 18228, effective December 20, 1994; amended in 

R98-24 at 22 Ill. Reg. 13723, effective July 13, 1998; expedited correction at 22 Ill. Reg. 

21120, effective July 13, 1998. 

BOARD NOTE: This part implements the Environmental Protection Act as of July 1, 

1994. 

NOTE: Capitalization denotes statutory langnage. 

SUBPART A: DEFINTIONS AND GENERAL PROVISIONS 

Section 240.102 Definitions 

All tenns which appear in this Part have the defmitions specified in tlris Part and 35 Ill. 

Adm. Code 201 and 211. Where conflicting definitions occur, the definitions ofthis 

Section apply in this Part. 

"Adjusted Loaded Vehicle Weight ("AL VW"l" means vehicle curb weight 

plus gross vehicle weight rating divided. by two. 

"Agency'' means the Illinois Environmental Protection Agency. 

"Diesel engine" means all types of internal-combustion engines in which 

air is compressed to a temperature sufficiently high to ignite fuel injected 

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directly into the cylinder area. 

"Diesel locomotive" means a diesel engine vehicle designed to move cars 

on a railway. 

"Evaporative system integrity test" means a test of a vehicle's evaporative 

system. The test shall either consist of a leak check of a vehicle's fuel cap 

with a fuel cap pressure decay tester (fuel cap pressure decay test), a fuel 

cap leak flow tester (fuel cap leak flow test), or a visual functional check, 

as applicable. · 

"Fuel cap" means a device used to seal a vehicle's fuel inlet. 

"Fuel cap leak flow test" means a test which may be performed in 

accordance with this Part on a vehicle's fuel cap nsing a fuel cap leak flow 

tester to determine whether the vehicle complies with the evaporative 

system emission standards of this Part. 

"Fuel cap leak flow tester" means a device used to determine the leak flow 

integrity of a vehicle's fuel cap by comparing the measured leak flow of 

the fuel cap with an established fuel cap leak flow standard. 

''Fuel cap pressure decay test" means the test performed in accordance 

with this Part on a vehicle's fuel cap usi11g a fuel cap pressure decay tester 

to detennine whether the vehicle complies with the evaporative system 

emission standards of this Part. 

"Fuel cap pressure decay tester" means a device used to determine the 

pressure decay integrity of a vehicle's fuel cap by monitoring the pressure 

behind the fuel cap for a ten second period and comparing the measured 

pressure decay of the fuel cap to an established fuel cap pressure decay 

standard. 

"Fuel cap visual functional test" means the test performed in accordance 

with this Part on a vehicle's fuel cap using visual analysis to determine 

whether the vehicle complies with the evaporative system emission 

standards of this Part. 

"Full power position" means the throttle position at which the engme fuel 

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delivery is at maximum flow. 

"Gross vehicle weight rating (GVWR)" means the valu,e specified by the 

manuillctnrer as the maximum design loaded weight of a single vehicle. 

"Heavy duty vehicle'' means any motor vehicle rated at more than 8500 

pounds GVWR or that has a vehicle curb weight of more than 6000 

pounds or that has a basic vehicle frontal area in excess of 45 square feet. 

"High idle" means a vehicle operating condition with engine disco1mected 

from an external load (placed in either neutral or park) and operating at 

speed of 2500 ± 300 RPM. 

"Idle mode" means that portion of a vehicle emission test procedure 

conducted with the engine disconnected from an external load and 

operating at minimum throttle. 

"Jnitial idle mode" means the first of up to two idle mode sampling periods 

during a steady-state idle mode test, during which exhaust emission 

measurements are made with the vehicle in ''as-received" condition. 

"Light duty truck 1" means a motor vehicle rated at 6000 pounds 

maximum GVWR or less and which has a vehicle frontal area of 45 square 

feet or less, and which is designed primarily for purposes of transportation 

of property or is a derivation of such a vehicle, or is designed primarily for 

transportation of persons and has a capacity of more than 12 persons, or is 

available with special featnres enabling off-street or off-highway operation 

and use. 

"Light duty truck 2" means a motor vehicle rated between 6001 and 8500 

pounds maximum GVWR and which has a vehicle frontal area of 45 

square feet or less, and which is designed primarily for purposes of 

transportation of property or is a derivation of such a vehicle, or is 

designed primarily for transportation of persons and has a capacity of more 

than 12 persons, or is available with special features enabling off-street or 

off-highway operation and use. 

"Light duty vehicle" means a passenger car or passenger car derivative 

capable of seating 12 passengers or fewer. "Loaded mode" means that 

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portion of a vehicle emission test procedure conducted with the vehicle 

positioned and operating under load on a chassis dynamometer. 

"Loaded mode" means that portion of a vehicle emission test procedure 

conducted with the vehicle positioned and operating under load on a 

chassis dynamometer. 

"Loaded vehicle weight (L VW)" means the vehicle curb weight plus 300 

pounds. 

"Measured values" means five second running averages of exhanst 

emission concentrations sampled at a minimum rate of twice per second. 

"Model year" means the year of manufacture of a motor vehicle based 

upon the annual production period as designated by the manufacturer and 

indicated on the title and registration of the vehicle. If the manufacturer 

does not designate a production period for the vehicle, then "model year" 

means the calendar year of manufacture. 

"Motor vehicle" as used in this Part, shaH have the same meatring as in 

Section 1-146 of the Illinois Vehicle Code [ 625 ILCS 5/1-146]. 

"Preconditiotring mode" means a period of steady-state loaded mode or 

high-idle operation conducted to ensure that the engine and emissions 

control system components are operating at normal operating 

temperatures, thus minimizing false failures caused by improper or 

insufficient warm.-up. 

"Second-chance idle mode" means the second of two idle mode sampling 

periods during a steady-state idle mode test, preceded by a preconditioning 

mode and utilized as a second chance to pass idle exhaust emission 

standards immediately following an initial idle mode failure. 

"Smokemeter or opacimeter" means an optical instrurnem designed to 

measure the opacity of smoke or diesel exhaust gases using the light 

extinction method. 

"Snap-idle cycle" means rapidly depressing the accelerator pedal from 

normal idle to the full power position while the vehicle is in neutral, 

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holding the pedal in the position for no longer than ten seconds or until the 

engine reaches maximum RPM, and fully releasing the pedal so that the 

engine decelerates to normal idle. 

"Steady-state idle test" means a vehicle emission test procedure consisting 

of an initial idle mode measurement of exhaust emissions followed, if 

necessary, by a loaded or high idle preconditioning mode and a secondchance idle mode. 

"Transient loaded mode test" means a vehicle emissions test run on an 

inertial and power absorbing dynamometer using USEP A's IM240 driving 

cycle consisting of accelerations and decelerations simulating on-road 

driving conditions. 

"Vehicle curb weight" means the actual vehicle weight plus standard 

equipment and a full fuel tank. 

(Source: Amended at _Ill. Reg. __ , effective ____ , 

Section 240.104 Inspection 

aj All meter vehicles suSj eet te inspeetien JllH'SIIflnt te £ee!ien 13A 1 04-<*-

the Vehlele Bmissiens lRsflee!ienL~>w [625 ILCS 5/l3A 104] silall 

eeffiflly vfith tile eJ<nE>Hst emissioa stfr!>aards fer earbeu menexide aad 

BytlFeearbeus set fertb at Seetieu 240.124 eftbis Part. 

b1 All motor vehicles subject to inspection pursuant to Section 13B-15 of the 

Vehicle Emissions Inspection Law [625 ILCS 5/13B-15] shall comply 

with applicable vehicle emission standards contained in Sections 240.152, 

240.162, 240.163, 240. I 72, 240. I 82 and 240.192 of this Part. 

(Source: Amended at-. Ill. Reg.~ effective-----' 

Section 240.105 Penalties 

a) Any violations of Sections 240. I 03, 240.121, 240.122, and 240.123 of this 

Part shall be subject to the penalties as set forth in Section 42 of the Act 

[415 JLCS 5/42]. 

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b) Any vislatisoo sf Ssotiens 24G.l G4 (aj ana 24G.l24 sf !his Part slladll3e 

su!Jjest te !he penalties as set fefl:h in Seotiens 13A 112 ana 13A ll:l ef 

!he Vehiele Emissiens Jnspeetioo Law [625 JLCS 5/BA 112 aml13A 

-mt 

Any violations of Sections 240.1 04(b), 240.152, 240.162, 240.163, 

240.172, 240.182, and 240.192 of this Part shall be subject to the penalties 

as set forth in Sections 13B-55 and 13B-60 of the Vehicle Emissions 

Inspection Law. 

(Source: Amended at_ Ill. Reg. ~ effective-----' 

Section 240.106 Determination of Violation 

a) Anyvio1ations of Sections 240.103,240.121,240.122, and240.123 ofthis 

Part shall be determined by visual observation or by a test procedure 

employing an opacity measurement system as qualified by 35 Ill. Adm. 

Code 201, .Subpa11: J. 

b) Any violations of Sections 249.124, 240.152, 240.! 62, 240.163, 240.172, 

240.182, or 240.192 of this Part shall be determined in accordance with 

test procedures adopted by the Agency in 35 Ill. Adm. Code 276. 

(Source: Amended at_ Ill. Reg. ~ effective _____ ) 

Section 240.107 Incorporations by Reference 

The following materials are incorporated by reference and include no later editions or 

amendments: 

a) Society of Automotive Engineers (SAE), 400 Commo!1wealth Drive, 

Warrendale, PA 15096: Report J255a Diesel Engine Smoke 

Measurement (August 1978). 

b) International Standards Organization (ISO), Case Postale 56, 1211 Geneve 

20, Switzerland: ISO 393 (Working Draft, January 1991). Also available 

from American National Standards Institute (ANSI), 11 West 42nd Street, 

New York, NY 10036. 

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c) United States Environmental Protection Agency (USEP A), "High-Tech 

l!M Test Procedures, Emission Standards, Quality Control Requirements, 

and Equipment Specifications: IM240 and Functional Evaporative System 

Tests, Revised Technical Guidance," Report EPA-AA-RSPD-IM-96-1 

(June 1996), 2565 Plymouth Road, Ann Arbor, MI 48105. 

ill United States Environmental Protection Agency (USEPA), Transportation 

and Regional Programs Division, Office of Transportation and Air 

Quality, '1M240 & Evap Technical Guidance," Report EPA420'R-00-007 

(April 2000), 2565 Plvmouth Road, Ann Arbor, MI 48105. 

(Source: Amended at_ Ill. Reg. __ , effective ____ _) 

SUBPART B: EMISSIONS 

Section 240.124Vehic1e Exhaust Ernission Standards (Repealed) 

a) Exb.at~st emissions ftem light <ffity vel;ieles shall not eJ<eeea the fu!lev."J>g 

limitations: 

Medel YeiH 

196& 1971 

1972 1974 

1975 1977 

1978 1979 

+9&\) 

19&1 and later 

Careen MsnsKiae Hy<lroearbens as 

Hm<ane 

~ 

e) Bxhau£! emissions from light dt~ty trueks, whieb for the j'ltlFflOS8S of tHis 

subsection means a n1eter velrisle rated at &000p9UI1ds grass vehiele 

'Neight or less whish is designed for eanyffig mere than 1 () persons or 

<!esi.gned fur the lransp011alioo of property, fteight or eiHgo, or is a 

Elerivai±'<e af Slleh a velrisle, shall nat Olteeed the full swing Iimitalie!ls: 

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Model Year 

196& 1971 

1972 1974 

1975 197& 

1979 19SO 

1981 19&3 

1984 and later 

Garb OR MoRe"ide Hy9roearl3om as 

Hffimne 

(ppm) 

e) BJffiaust omissioRs ffom heavy duty vehicles, which fer th€ J'lllrflOSes of 

this subseetioR means a vehiele wifu 8G01j'loands or greater 

ma;mfae!llrer's maJdmum gross vehlele weigfil ratmg (GVWR), shadl Rot 

eJtGeeE! the fellowmg limitatioru;: 

Moelel Year Carbon Mono"ide HyElrecaffioRS as 

He~tane 

% (ppm) 

19€!8 1971 JM BOO 

1972 1978 M 900 

1979 1984 +.() +00 

1985 and later 3o{) 300 

(Source: Repealed at_ IlL Reg. __ , effective ____ _) 

Section 240.125 Compliance Det=ination (Repealed) 

For J'l\ITj'>Oses of Eletermffiing eoffij'llianee wifu Seetioa 2 4 0.124 of this Part, all vehieles 

shadlbe iESjloetoel v:hile OJ'leralffig ia the icllc moae, and ad! 1981 and lster a:odel year 

light duty vehicles and light duty trael[s (as defuwd in SubseatieH 240.124(13) ofthls Part) 

shad! be iRSpeated at high ii!le Ell!Fing a two specS. iclle test 

(Source: Repealed at_ TIL Reg. __ , effective ____ _) 

SUBPART E: TRANSIENT LOADED MODE TEST EMISSION ST A..."'DARDS 

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Section 240.162 Vehicle Exhaust Emission Start-Up Standards 

Vehicle exhaust emission start cup standards contained in Se;;tion 240.Table A of this Part 

shall apply for all vehicles subject to inspection until two years after the beginning of 

IM240 testing. Subsequently. these standards shall continue to apply to all model year 

1981 through model year 19S7 LDV. LDTL and LDT2 vehicles. All standards are 

expressed in grams per mile (gpm). 

(Source: Amended at_ Ill.. Reg. __ , effective ____ _, 

Section240.163 Vehicle Exhaust Emission Final Standards 

Vehicle exhaust emission tina! standards contained in Section 240.Table B of this Part 

shall apply for all vehicles· subject to inspection beginning at the conclusion of testing 

using the start-up vehicle exhaust emissions standards required in Section 240.162 except 

for model year 1981 through model year 1987 LDV, LDTl, and LDT2. vehicles. which 

shall continue to use the standards contained in Section 240. Table A of this Part as 

described in Section 240.162. All standards are expressed in grams per mile (gpm). 

(Source: Amended at _ill. Reg. __ , effective-----' 

Section 240.164 Vehicle Exhaust Emission Fast-Pass Standards 

Vehicle exhaust emissions fast-pass standards contained in Section 240.Table C of this 

Part will apply for all vehicles subject to inspection under Section 240.161 ofthis Part 

utilizing the IM240 transient loaded mode exhaust emission test procedures that have 

been will-be adopted by the Agency in 35 Ill. A dill. Code 276. All standards are 

expressed as the cumulative grams for each second of the composite and Phase 2 tests. 

(Source: Amended. at_ Ill. Reg. __ , effective ____ ) 

Section 240. 165 Compliance Determination 

a) Vehicle Exhaust Emission Start-Up and Final Standards- Compliance 

shall be determined based upon the measurement of exhaust emissions 

while operating the vebicle on a dynamometer and following the driving 

cycle as specified for the transient IM240 test procedures adopted by the 

Agency. If the corrected, composite emission rates exceed standards for 

any pollutant, additional analysis of test results shall review the second 

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phase ("Phase 2") of the driving cycle separately. Phase 2 shall include 

second 94 through second 239 of the driving cycle. Second·by-second 

emission rates in grams and composite emission rates in grams per mile 

for Phase 2 and for the entire composite test shall be recorded for each 

pollutant. For any given pollutant, if the composite emission level is at or 

below the composite standard or if the Phase 2 grams per mile emission 

level is at or below the applicable Phase 2 standard, then the vehicle shall 

pass the test for that pollutant. Composite and Phase 2 emission rates shall 

be calculated in accordance with procedures specified in "High-Tech liM 

Procedures, Emissions Standards, Quality Control Requirements, and 

Equipment Specifications: IM240 and Functional Evaporative System 

Tests, Revised Technical Guidance," incorporated by reference at Section 

240.107(c) ~1-W of this Part. 

b) Vehicle Exhaust Emission Fast· Pass Standards- Compliance will be 

determined based upon the measurement of exhanst emissions while 

operating the vehicle on a dynamometer and following the driving cycle as 

specified for the transient IM240 test procedures adopted by the Agency. 

Vehicles will be fast·passed using the following algorithm: 

1) Beginning at second 30 of the driving cycle, cumulative second-by· 

second emission levels for each second, calculated from the start of 

the cycle in grams, will be compared to the cumulative fast-pass 

emission standards for the second under consideration. Beginning 

at second 109, fast-pass decisions are based upon analysis of. 

cumulative emissions in Phase 2, the portion of the test beginning 

at second 94, as well as emission levels accumulated from the 

begimring of the composite test. 

2) A vehicle will pass the transient IM240 test for a given pollutant if 

either of the following conditions occurs: 

A) cumulative emissions of the pollutant are below the full 

cycle fast·pass standard for the second under consideration; 

or 

B) at second 109 and later, cumulative Phase 2 emissions are 

below the Phase 2 fast-pass standards for the second under 

consideration, 

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3) testing may be tenninated when fast-pass criteria are met for all 

subject pollutants in the same second, 

4) If a fast-pass detennination cannot be made for all subject 

pollutants before the driving cycle ends, the pass/fail detennination 

for each component will be based on composite or Phase 2 

emissions over the full driving cycle according to the procedures in 

subsection (a) ofthis Section. In cases where fast-pass standards 

are not used, composite emission rates in grams per mile for Phase 

2 and for the entire composite test will be recorded for each 

pollutant. 

5) Composite and Phase 2 emission rates will be calculated in 

accordance with procedures specified in "High-Tech 11M 

Procedures, Emissions Standards, Quality Control Requirements, 

and Equipment Specifications: IM240 and Functional Evaporative 

System Tests, Revised Technical Guidance" incorporated by 

reference at Section 240.107(c) 240.107 of this Part. 

(Source: Amended at _lll. Reg. __ , effective ____ ) 

SUBPARTH: ON-BOARD DIAGNOSTIC TEST STANDARDS 

Section 240. J 91 Applicability 

The standards of this Subpart apply to all 1996 and newer model year light duty vehicles, 

light duty trucks 1, and light duty trucks 2 that are required to meet the standards 

contained in 40 C.F.R. § 86.094-17 and which are inspected utilizing the on-board 

diagnostic test procedures that will be adopted by the Agency in 35 lll. Adm. Code 276. 

Vehicles that receive a result of fail do not thereby fail their emissions test until January 

1, 2002 ;!00+. 

(Source: Amended at_ Ill. Reg. __ , effective ____ ) 

Section 240.T ABLE A Vehicle. Exhaust Emission Start-Up Standards 

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Light Duty Vehicles: 

Model Years Hydtocarbons 

Composite 

(gpm) 

1996+ 0.80 

!991c1995 1.20 

1983-1990 2.00 

1981-1982 2.00 

Light Duty Trucks 1: 

Phase2 

(gpm) 

0.50 

0.75 

1.25 

1.25 

Model Years Hydtocarbons 

Composite Phase2 

(gpm) (gpm) 

1996+ 

(::: 3750 0.80 0.50 

LVW) 

(> 3750 1.00 0.63 

LVW) 

1991-1995 2.40 1.50 

1988-1990 3.20 2.00 

1984-1987 3.20 2.00 

1981-1983 7.50 5.00 

Light Duty Trucks 2: 

Model Years Hydtocarbons 

1996+ 

Composite 

(gpm) 

Phase2 

(gpm) 

Carbon Monoxide 

Composite 

(gpm) 

15.0 

20.0 

30.0 

60.0 

Phase 2 

(gpm) 

12.0 

16.0 

240 

48.0 

Carbon Monoxide 

Composite Phase 2 

(gpm) (gpm) 

15.0 12.0 

20.0 16.0 

60.0 48.0 

80.0 64.0 

80.0 64.0 

100.0 80.0 

Carbon Monoxide 

Composite 

(gpm) 

Phase 2. 

(gpm) 

Oxides of Nitrogen 

Composite 

(gpm) 

2.0 

2.5 

3.0 

3.0 

Phase2 

(gpm) 

Reserved 

Reserved 

Reserved 

Reserved 

Oxides ofNitrogen 

Composite Phase2 

(gpm) (gpm) 

2.0 Reserved 

2.5 Reserved 

3.0 Reserved 

3.5 Reserved 

7.0 Reserved 

7.0 Reserved 

Oxides of Nitrogen 

Composite 

(gpm) 

Phase2 

(gpm) 

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(S 5750 1.00 0.63 20.0 16.0 2.5 Reserved 

ALVW) 

(> 5750 2.40 1.50 60.0 48.0 4.0 Reserved 

ALVW) 

1991-1995 2.40 1.50 60.0 48.0 4.5 Reserved 

1988-1990 3.20 2.00 &0.0 64.0 5.0 Reserved 

1984-1987 3.20 2.00 80.0 64.0 7.0 Reserved 

1981-1983 7.50 5.00 100.0 80.0 7.0 Reserved 

(Source: Amended at_ TIL Reg. __ , effective 

Section 240. TABLE B Vehicle Exhaust Emission Final Standards 

Light Duty Vehicles: 

Model Years Hydrocarbons Carbon Monoxide Oxides ofNitrogen 

Composite Phase2 Composite Phase 2 Composite Phase 2 

(gpm) (gpm) (gpm) (gpm) (gpm) (gpm) 

1996+ 0.60 0.40 10.0 8.0 1.5 Reserved 

1983-1995 0.80 0.50 15.0 12.0 2.0 Reserved 

1981-1982 0.80 0.50 30.0 24.0 2.0 Reserved 

Light Duty Trucks 1: 

Model Years Hydrocarbons Carbon Monoxide Oxides ofNitrogen 

Composite Phase 2 Composite Phase 2 Composite Phase2 

(gpm} (gpm) (gpm) (gpm) (gpm) (gprn) 

1996+ 

(S 3750 0.60 0.40 10.0 s,o 1.5 Reserved 

LVW) 

(> 3750 0.80 0.50 .13.0 10.0 1.8 Reserved 

LVW) 

1988-1995 1.60 1.00 40.0 32.0 2.5 Reserved 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1328 
1984-1987 1.60 

1981-1983 3.40 

Light Duty Trucks 2: 

ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

1.00 

2.00 

40.0 

70.0 

32.0 

56.0 

4.5 

4.5 

Reserved 

Reserved 

Model Years Hydrocarbons . Carbon Monoxide Oxides of Nitrogen 

Composite Phase 2 Composite Phase 2 Composite Phase 2 

(gpm) (gpm) (gpm) (gpm) (gpm) (gpm) 

1996+ 

(< 5750 0.80 0.50 13.0 10.0 1.8 Reserved 

ALVW) 

(> 5750 0.80 0.50 15.0 12.0 2.0 Reserved 

ALVW) 

1988-1995 1.60 1.00 40.0 32.0 3.5 Reserved 

1984-1987 1.60 1.00 40.0 32.0 4.5 Reserved 

1981"1983 3.40 2.00 70.0 56.0 4.5 Reserved 

(Source: Amended at_ Ill. Reg. __ , effective ) 

Section 240.TABLE C Vehicle Exhanst Emission Fast-Pass Standards 

a) Vehicles having composite hydrocarbon emission limitations of less thao 1.25 

grams per mile, in Section 240.TABLE A or Section 240.TABLE B, shall use the 

hydrocarbon fast"pass standards contained in this subpart. Vehicles having ercomposite carbon monoxide emission limitations of Jess thao 20.0 grams per mile, 

in Section 240.TABLE A or Section 240.TABLE B, shall use the carbon 

monoxide fast-pass standards contained in this subpart. 

Hydrocarbons Carbon Monoxide 

Second Composite Phase 2 C6mposite Phase 2 

30 0.124 NIA 0.693 NIA 

31 0.126 NIA 0.773 NIA 

32 0.129 NIA 0.837 NIA 

33 0.135 NIA 0.851 NIA 

34 0.140 N/A 0.853 NIA 

35 0.146 NIA 0.857 NIA 

36 0.150 NIA 0.900 N/A 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1329 
ILLJNOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

37 0.153 NIA 0.960 NIA 

38 0.156 NIA 1.034 NIA 

39 0.1.60 NIA 1.070 N/A 

40 0.165 N/A 1.076 NIA 

41 0.169 N!A 1.083 NIA 

42 0.172 NIA 1.102 NIA 

43 0.173 NIA 1.111 NIA 

44 0.177 NIA 1.114 NIA 

45 0.197 NIA 1.157 NIA 

46 0.200 NIA 1.344 N/A 

47 0.208 NIA 1.482 N/A 

48 0.221 NIA 1.53.0 NIA 

49 0.232 NIA 1.542 NIA 

50 0.235 N/A . 1.553 NJA 

51 0.238 NtA 1.571 NIA 

52 0.240 NIA 1.595 NIA 

53 0.242 N/A 1.633 NIA 

54 0.246 NIA 1.685 N/A 

55 0.:249 N/A 1.689 NIA 

56 0.252 NIA 1.693 N/A 

57 0.261 NIA 1.700 NIA 

58 0-271 NIA 1.723 NIA 

59 0.276 NIA 1.852 NIA 

60 0.278 NIA 1.872 NIA 

61 0.280 NIA 1.872 N/A 

62 0.282 NIA 1.&72 NIA 

63 0.283 NIA 1.900 N!A 

64 0.284 NIA 1,917 N!A 

65 0.285 N/A 1.944 N!A 

66 0.286 NIA 2.000 NIA 

67 0.288 NIA 2.060 NIA 

68 0.291 NIA 2.064 N/A 

69 0.294 N/A 2.076 NIA 

70 0.296 NIA · 2.104 N/A 

71 0.298 NIA 2.117 .NIA 

72 0.300 N/A 2.125 N/A 

73 0.302 NIA 2.130 NIA 

74 0.304 NIA 2.138 NIA 

75 0.307 N/A 2.152 N/A 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1330 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

76 0.308 NIA 2.170 N/A 

77 0.308 NIA 2.188 NIA 

78 0.308 NIA 2.200 N/A 

79 0.314 N/A 2.212 N/A 

80 0.320 NIA 2.212 N/A 

81 0.324 N!A 2.221 N/A 

82 0.327 N/A 2.222 N/A 

83 0.329 N!A 2.227 NIA 

84 0.333 N/A 2.236 N!A 

85 0.336 NIA 2.243 N/A 

86 0.339 N/A 2.262 N/A 

87 0.343 N/A 2.271 N/A 

88 0.347 N/A 2.284 N/A 

89 0.350 N/A 2.299 N!A 

90 0.356 N/A 2.308 N/A 

91 0.358 N/A 2.326 N/A 

92 0.360 N/A 2.330 N/A 

93 0.363 NIA 2.331 N!A 

94 0.367 N/A 2.344 N/A 

95 0.370 N/A 2.347 N/A 

96 0.372 N/A 2.355 N/A 

97 0.376 N/A 2.395 NIA 

98 0.388 NIA 2.451 NIA 

99 0.396 N/A 2.508 N/A 

100 0.405 N/A 2.590 N/A 

101 0.410 N/A 2.660 N/A 

102 0.411 N/A 2.749 N/A 

103 0.412 N/A 2.913 N/A 

104 0.413 N/A 3.162 N/A 

105 0.421 N/A 3.170 N/A 

106 0.428 N/A 3.197 N/A 

107 0.430 N/A 3.288 N!A 

108 0.455 N/A 3.419 N/A 

109 0.459 0.015 3.587 0.168 

110 0.462 O.Dl7 3.595 0.173 

111 0.464 0.021 3.640 0.237 

112 0.466 0.024 3.740 0.266 

113 0.468 0.024 3.868 0.280 

114 0.471 0.025 3.877 0.291 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (l/M) Program: Attachments Page - 1331 
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115 0.488 0.026 3.934 0.314 

116 0.513 0.029 4.015 0.331 

117 0.538 0.032 4.061 0.345 

118 0.561 0.035 4.063 0.350 

119 0.577 0.035 4.079 0.356 

120 0.580 0.036 4.140 0.367 

121 0.586 O.Q38 4.185 0.388 

122 0.594 0.040 4.199 0.407 

123 0.603 0.041 4.205 0.463 

124 0.610 0.042 4.212 0.480 

125 0.6!5 0.042 4.232 0.506 

126 0.624 0.042 4.298 0.518 

127 0.628 0.045 4.344 0.522 

128 0.632 0.046 4.361 0.525 

129 0.637 0.046 4.366 0.528 

130 0.641 0.049 4.369 0.530 

131 0.643 0.050 4.372 0.530 

132 0.644 0.052 4.435 0.534 

133 0.645 0.054 4.523 0.550 

134 0.647 0.054 4.524 0.554 

135 0.651 0.054 4.525 0.590 

136 0.658 0.055 4.531 0.616 

137 0.663 0.055 4.534 0.639 

138 0.666 0.056 4.542 0.653 

139 0.668 0.059 4.553 0.662 

140 0.670 0.06! 4.554 0.683 

141 0.672 0.061 4.554 0.696 

142 0.675 0.061 4.554 0.708 

143 0.678 0.063 4.554 0.721 

144 0.681 0.064 4.554 0.739 

145 0.684 0.065 4.554 0.742 

146 0.686 0.066 4.554 0.743 

!47 0.688 0.067 4.554 0.745 

148 0.690 0.068 4.554 0.748 

149 0.692 0.069 4.554 0.751 

150 0.694 0.070 4.554 0.762 

151 0.696 0.071 4.556 0.789 

152 0.698 0.072 4.556 0.790 

153 0.700 0.073 4.565 0.794 

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NOTICE OF PROPOSED RULES 

154 0.702 0.073 4.612 0.799 

155 0.704 0.074 4.834 0.805 

156 0.706 0.077 5.702 0.842 

!57 0.708 0.079 5.841 0.990 

158 0.710 0.082 6.170 1.038 

159 0.712 0.0&2 6.670 1.357 

160 0.716 0.086 7.425 1.455 

161 0.750 0.095 8.379 1.546 

162 0.784 0.107 9.648 1.824 

163 0.805 0.115 10.918 2.746 

164 0.840 0.122 12.157 3.073 

165 0.853 0.127 12.731 3.633 

166 0.874 0.159 12.831 4.505 

167 0.903 0.186 12.892 4.952 

168 0.910 0.189 12.932 5.254 

169 0.914 0.200 13.702 5.730 

170 0.916 0.220 14.139 6.051 

171 0.919 0.236 14.964 6.333 

172 0.931 0.247 15.704 6.490 

173 0.948 0.257 16.253 6.796 

174 0.983 0.267 16.907 7.205 

175 1.018 0.283 17.655 8.151 

176 1.027 0.295 18.020 8.230 

177 1.035 0.312 18.349 8.584 

178 1.051 0.318 18.671 8.800 

179 1.074 0.323 18.972 8.847 

180 1.084 0.337 19.228 8.913 

181 1.099 0.345 20.123 9.122 

182 1.121 0.350 20.405 9.532 

183 1.132 0.359 20.754 10.256 

184 1.152 0.387 21.684 10.862 

185 1.161 0.398 21.955 10.996 

186 1.168 0.400 22.650 11.206 

187 1.175 0.402 22.989 11.514 

188 1.181 0.405 23.535 11.894 

189 1.188 0.418 23.876 12.019 

190 1.203 0.429 24.018 12.170 

191 1.219 0.442 24.464 12.517 

192 1.233 0.457 24.685 12.598 

. 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (1/M) Program: Attachments Page- 1333 
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POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

193 1.251 0.473 24.931 12.625 

194 1.255 0.487 25.188 12.653 

195 1.258 0.501 25.468 12.777 

196 1.265 0.510 25.627 12.906 

197 1.280 0.512 25.746 12.989 

198 1.293 0.514 25.850 13.060 

199 1.301 0.516 25.974 13.165 

200 1.313 0.518 26.141 13.242 

201 1.324 0.527 26.225 13.412 

202 1.332 0.540 26.338 13.662 

203 1.341 0.547 26.547 13.773 

204 1.357 0.553 26.818 13.942 

205 1.375 0.559 27.052 .14.090 

206 1.392 0.563 27.393 14.224 

207 1.408 0.567 27.501 14.426 

208 1.422 0.571 27.632 14.498 

209 1.433 0.575 27.803 14.776 

210 1.443 0.579 27.953 14.907 

211 1.453 0.595 28.205 14.916 

212 1.463 0.605 28.543 15.014 

213 1.468 0.614 28.997 15.221 

214 1.470 0.622 29.000 15.472 

215 1.474 0.627 29.005 15.555 

216 1.478 0.638 29.081 15.652 

217 1.481 0.643 29.281 15.969 

218 1.484 0.643 29.483 16.028 

219 1.487 0.645 29.734 16.375 

220 1.490 0.651 29.803 16.487 

221 1.493 0.655 29.821 16.524 

222 1.504 0.663 29.847 16.578 

223 1.522 0.671 29.862 16.684 

224 1.547 0.675 29.873 16.755 

225 1.549 0.684 30.008 16.770 

226 1.562 0.694 30.126 16.805 

227 1.574 0.701 30.127 16.865 

228 1.579 0.702 30.127 16.960 

229 1.584 0.708 30.208 16.960 

230 1.589 0.708 30.314 16.962 

231 1.590 0.709 30.323 16.988 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1334 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

232 1.596 0.710 30.325 17.072 

233 1.598 0.710 30.368 17.094 

234 1.604 0.711 30.411 17.184 

235 1.610 0.712 30.416 17.187 

236 1.612 0.712 30.428 17.188 

237 1.613 0.712 30.430 17.189 

238 1.614 0.713 30.452 17.241 

209 1.615 0.716 30.488 17.370 

b) Vehicles having composite hydrocarbon emission limitations of at least 1.25 

grams per mile but less than 2.00 grams per mile, in Section 240.TABLE A or 

Section 240.TABLE B, shall use the hydrocarbon fast-nass staodards contained in 

this subpart. Vehicles having er-composite carbon monoxide emission limitations 

of at least 20.0 grams per mile but less than 30.0 grams per mile, in Section 

240.TABLE A or Section 240.TABLE B, shall use the carbon monoxide fast-pass 

standards contained in this subpart. 

Hydrocarbons Carbon Monoxide 

Second Composite Phase 2 Composite Phase 2 

30 0,247 N/A 1.502 N/A 

31 0.253 N/A 1.546 N/A 

32 0.258 NIA 1.568 N/A 

33 0.263 N/A 1.582 N/A 

34 0.268 N/A 1.593 N/A 

35 0.277 NIA 1.602 NIA 

36 0.283 N/A 1.621 N/A 

37 0.293 N/A 1.631 N/A 

38 0.297 NIA 1.702 N/A 

39 0.298 N/A 1.784 N/A 

40 0.313 N/A 1.879 N/A 

41 0.320 N!A 2.162 NIA 

42 0.327 N/A 2.307 N/A 

43 0.342 N/A 2.343 N/A 

44 0.360 N!A 2.376 N/A 

45 0.376 N/A 2.406 N/A 

46 0.389 N/A 2.433 N/A 

47 0.408 N/A 2.458 N/A 

48 0.423 N/A 2.483 NIA 

49 0.434 N/A 2.774 N/A 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1335 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

50 0.444 N/A 2.844 N/A 

51 0.454 N/A 2.900 N!A 

52 0.465 NIA 2.936 NIA 

53 0.472 NIA 3.133 N/A 

54 0.478 N/A 3.304 N/A 

55 0.485 N/A 3.407 NIA 

56 0.493 NIA 3.456 N/A 

57 0.500 N/A 3.480 N/A 

58 0.505 N/A 3.518 N/A 

59 0.514 N/A 3.560 N/A 

60 0.537 N/A 3.593 N/A 

6\ 0.540 N/A 3.628 NIA 

62 0.543. N/A 3.641 N/A 

63 0.546 N/A 3.655 N/A 

64 0.551 N/A 3.680 N/A 

65 0.559 NIA 3.700 N/A 

66 0.567 N/A 3.728 N/A 

67 0.575 N/A 3.857 N/A 

68 0.588 N/A 3.894 NIA 

69 0.595 N/A 3.943 NIA 

70 0.601 N/A 3.983 N/A 

71 0.606 N/A 4.009 N/A 

72 0.610 N/A 4.023 N/A 

73 0.617 N/A 4.023 N/A 

74 0.631 NIA 4.053 N/A 

75 0.643 N/A 4.063 N/A 

76 0.651 N/A 4.077 N/A 

77 0.659 NIA 4.225 N/A 

78 0.667 N/A 4.243 N/A 

79 0.676 N/A 4.260 N/A 

80 0.681 N/A 4.282 N/A 

81 0.685 N/A 4.322 N/A 

82 0.689 N/A 4.398 N/A 

83 0.694 N/A 4.482 N/A 

84 0.700 N/A 4.515 N/A 

85 0.705 NIA 4.518 N/A 

86 0.709 N/A 4.520 NIA 

87 0.713 N/A 4.522 NIA 

88 0.717 N/A 4.522 N/A 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page- 1336 
ILLINOIS REGISTER 

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NOTICE OF PROPOSED RULES 

89 0.721 N/A 4.523 . N/A 

90 0.724 N/A 4.526 N/A 

91 0.727 N/A 4.527 N/A 

92 0.729 NIA 4.527 N/A 

93 0.731 N/A 4.528 N/A 

94 0.734 NIA 4.528 N/A 

95 0.740 NIA 4.528 NIA 

96 0.748 N/A 4.529 N/A 

97 0.759 NIA 4.575 N/A 

98 0.771 N/A 4.703 NIA 

99 0.783 N!A 4.805 NIA 

100 0.793 N/A 4.886 N/A 

101 0.810 N/A 4.957 N/A 

102 0.823 N/A 5.104 N/A 

103 0.836 N/A 5.340 N/A 

104 0.853 N/A 5.496 N/A 

105 0.871 N/A 5.625 N/A 

106 0.887 NIA 5.815 N/A 

107 0.899 N/A 6.473 N/A 

108 0.931 NIA 7.037 NIA 

109 0.947 0.040 7.419 0.246 

110 0.957 0.047 7.643 0.257 

111 0.965 0.052 7.759 0.286 

112 0.971 0.056 7.824 0.379 

113 0.977 0.061 7.889 0.425 

114 0.983 0.064 7.960 0.457 

115 1.003 0.072 8.024 0.477 

116 1.030 0.081 8.076 0.494 

117 1.041 0.082 8.111 0.504 

118 1.050 0.083 8.130 0.512 

119 1.052 0.092 8.148 0.519 

120 1.055 0.094 8.211 0.529 

121 1.061 0.097 8.478 0.529 

122 1.071 0.100 8.548 0.530 

123 1.081 0.103 8.561 0.531 

124 1.091 0.106 8.568 0.532 

125 1.102 0.108 8.572 0.533 

126 1.110 0.110 8.584 0.548 

127 1.116 0.112 8.592 0.610 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (IIM) Program: Attacinnents Page- 1337 
ILLINOIS REGISTER 

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NOTICE OF PROPOSED RULES 

128 1.121 0.114 8.596 0.614 

129 1.125 0.116 8c597 0.622 

130 l.J28 0.118 8.601 0.631 

131 1.130 0.120 8.6()5 0.640 

132 1.132 0.122 8.608 0.646 

133 1.134 0.123 8.626 0.650 

134 1.135. 0.124 8.650 0.652 

135 1.143 0.127 8.660 0.738 

136 1.147 0.130 8.767 0.754 

137 1.156 0.134 9.029 0.780 

!38 1.163 .. 0.139 9.238 0.795 

139 1.186 0.146 9.389 0.804 

140 1.253 0.149 9.493 0.810 

141 1.262 0.151 9.583 0.815 

142 1.271 0.153 9.626 0.818 

143 1.277 . 0.155 9.669 0.82! 

144 1.283 0.157 9.716 0.825 

145 1.291 0.162 9.763 0.840 

146 1.294 0.164 9.809 0.847 

147 1.296 0.166 9.852 0.855 

148 1.298 0.168 9.885 0.865 

149 1.303 0.169 9.932 0.874 

150 1.316 0.170 9.986 0.891 

151 1.330 0.171 10.039 0.914 

152 1.342 0.172 10.072 0.929 

!53 1.348 0.173 10.090 0.937 

154 1.353 0.175 10.!05 0.942 

!55 1.362 0.178 10.146 0.949 

!56 1.365 0.180 10.245 1.375 

157 1.366 0.189 10.397 1.576 

!58 1.373 0.198 10.923 1.943 

!59 1.397' 0.203 11.970 2.820 

160 1.422 0.207 13.421 3.281 

161 1.440 0.214 15.289 3.483 

162 1.452 0.221 15.912 3.620 

163 1.465 0.229 16.530 4.168 

164 1.509 0.247 17.622 4.338 

165 1.533 0.274 !8.366 4.682 

166 1.555 0.309 19.869 5.633 

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NOTICE OF PROPOSED RULES 

167 1.576 0.318 20.711 6.137 

168 1.598 0.322 22.319 6.853 

169 1.618 0.333 23.751 7.136 

170 1.636 0.343 24.842 7.320 

171 1.666 0.356 25.410 7.685 

172 1.685 0.385 25.798 8.052 

173 1.726 0.409 26.122 8.344 

174 1.742 0.433 26.353 8.602 

175 1.756 0.453 26.638 8.898 

176 1.769 0.463 27.219 9.251 

177 1.784 0.507 27.279 10.253 

178 1.802 0.523 27.320 10.828 

179 1.822 0.528 27.352 10.933 

180 1.843 0.541 27.822 11.060 

181 1.864 0.549 28.763 11.188 

182 1.884 0.559 29.402 11.345 

183 1.896 0.571 29.971 11.733 

184 1.915 0.584 30.276 12.598 

185 1.940 0.598 30.988 12.953 

186 1.958 0.613 31.095 13.213 

187 1.972 0.624 31.314 14.131 

188 1.985 0.629 31.833 14.839 

189 1.991 0.629 32.239 15.137 

190 1.993 ' 0.638 32.547 15.138 

191 1.995 0.648 32.855 15.141 

192 2.001 0.659 33.153 15.595 

193 2.015 0.663 33.444 15.658 

194 2.031 0.671 33.482 15.704 

195 2.047 0.681 33.516 15.729 

196 2.063 0.693 33.549 16.058 

197 2.079 0.709 33.653 16.987 

198 2.094 0.725 33.973 17.064 

199 2.109 0.740 34.159 17.073 

200 2.122 0.754 34.191 17.153 

201 2.130 0.767 34.250 17.332 

202 2.137 0.775 34.469 17.406. 

203 2.157 0.787 34.716 17.641 

204 2.172 0.795 34.969 17.922 

205 2.194 0.803 35.144 18.484 

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206 2.222 0.854 35.418 18.553 

207 2.245 0.859 35.766 18.658 

208 2.268 0.872 35.949 18.953 

209 2.279 0.892 36.010 19.266 

210 2.288 0.896 36.548 19.309 

211 2.301 0.903 37.179 19.73 I 

212 2.316 0.924 37.651 19.902 

213 2.332 0.938 38.041 20.012 

214 2.345 0.941 38.591 20.260 

215 2.354 0.951 38.852 20.739 

216 2.362 0.966 38.861 21.346 

217 2.368 0.979 38.926 21.810 

218 2.376 0.980 39.194 22.001 

219 2.384 0.981 39.474 22.290 

220 2.391 1.005 39.668 22.324 

221 2.395 1.016 39.781 22.343 

222 2.400 1.022 39.890 22.522 

223 2.405 1.028 39.954 22.661 

224 2.409 1.035 39.984 22.666 

225 2.413 1.041 39.989 22.667 

226 2.415 1.045 39.990 22.668 

227 2.417 1.051 39.990 22.669 

228 2.419 1.055 39.990 22.670 

229 2.420 1.059 39.991 22.671 

230 2.421 1.062 40.012 22.671 

231 2.423 1.063 40.061 22.672 

232 2.425 1.063 40.116 22.673 

233 2.427 1.063 40.249 22.673 

234 2.429 1.064 40.253 22.673 

235 2.430 1.064 40.290 22.674 

236 2.431 1.066 40.385 22.675 

237 2.432 1.069 40.488 22.675 

238 2.433 1.072 40.720 22.675 

239 2.434 1.075 40.763 22.677 

c) Vehicles having composite hydrocarbon emission limitations of 2.00 grams per 

mile or greater, in Section 240.TABLE A or Section 240.TABLE B, shall use the 

hydrocarbon fast-Qass standards contained in this subQart. Vehicles. having 6f 

composite carbon monoxide emission limitations of 30.0 grams per mile or 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1340 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

greater, in Section 240.TABLE A or Section 240.TABLE B. shall use the carbon 

monoxide fast-J)ass standards contained in this sUbJ)art. 

Hydrocarbons Carbon Monoxide 

Second Composite Phase 2 Composite Phase2 

30 0.407 N/A 3.804 NIA 

31 0.415 N/A 3.985 N/A 

32 0.423 N/A 4.215 N/A 

33 0.436 N/A 4.440 N/A 

34 0.451 N/A 4.579 N/A 

35 0.464 N/A 4.688 N/A 

36 0.468 N/A 4.749 N/A 

37 0.475 N/A 4.783 N/A 

38 0.487 N!A 4.813 NIA 

39 0.506 N/A 4.876 N/A 

40 0.530 N/A 5.104 N/A 

41 0.549 N/A 5.217 N/A 

42 0.569 N/A 5.383 N/A 

43 0.588 N/A 5.571 N/A 

44 0.609 N/A 5.888 N/A 

45 0.621 N/A 6.199 N/A 

46 0.636 N/A 6.245 N/A 

47 0.649 N/A 6.318 NIA 

48 0.666 N/A 6.418 N/A 

49 0.679 N/A 6.540 N/A 

50 0.696 N/A 6.690 N/A 

51 0.712 N/A 6.875 N!A 

52 0.727 N/A 7.029 N/A 

53 0.745 N/A 7.129 N/A 

54 0.760 N/A 7.359 N/A 

55 0.776 N/A 7.722 N/A 

56 0.797 N/A 8.017 N/A 

57 0.814 N/A 8.249 N/A 

58 0.826 N/A 8.425 N/A 

59 0.837 N/A 8.563 N/A 

60 0.849 N/A 8.686 NIA 

61 0.862 N/A 8.804 N/A 

62 0.872 N/A 8.916 N/A 

63 0.887 N/A 9.025 N/A 

64 0.895 N/A 9.138 N/A 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1341 
lLLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

65 0.903 NIA 9.250 N/A 

66 0.925 NIA 9.354 N/A 

67 0.933 N/A 9.457 N/A 

68 0.945 N!A 9.575 N/A 

69 0.959 NIA 9.728 N/A 

70 0.970 N/A 9.938 N/A 

71 0.980 NIA 10.140 N/A 

72 0.988 N/A 10.222 N/A 

73 0.997 NIA 10.261 N/A 

74 1.022 NIA 10.278 N/A 

75 1.037 NIA 10.290 N/A 

76 1.051 N/A 10.715 N/A 

77 1.064 N/A 10.790 N/A 

78 1.075 N/A 10.844. N/A 

79 1.087 N/A 10.921 N/A 

80 1.097 N/A 11.010 NIA 

81 1.105 N/A 11.090 N/A 

82 1.114 N/A 11.136 N/A 

83 1.136 N/A 11.136 N/A 

84 1.160 N/A 11.165 NIA 

85 l.l82 N/A 11.191 N/A 

86 1.201 N/A 11.205 N!A 

87 1.217 N/A 11.211 N/A 

88 1.233 N/A 11.211 NIA 

89 1.248 NIA 11.211 N/A 

90 1.262 N/A 11.211 N/A 

91 1.271 N!A 11.220 N/A 

92 1.279 N/A 11.294 N/A 

93 1.287 NIA 11.332 N/A 

94 1.295 NIA 11.355 NIA 

95 1.302 NIA 11.383 N/A 

96 1.309 NIA 11.410 NIA 

97 1.316 NIA 11.433 NIA 

98 1.325 N/A 11.516 NIA 

99 1.339 N/A 11.820 NIA 

100 1J56 NIA 12.104 N/A 

101 1.365 NIA 12.344 NIA 

102 !.378 NIA 12.781 NIA 

103 1.397 NIA 13.472 NIA 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1342 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

104 L420 N/A J 4.405 NIA 

105 1.445 N/A 14.808 N/A 

106 L470 N/A 14.965 NIA 

107 1.491 NIA 15.121 N/A 

108 1.506 N/A 15.372 N/A 

109 1.517 0.151 15.530 1.113 

110 1.528 0.159 15.687 1.213 

111 1.542 0.172 16.018 1.344 

112 1.559 0.186 16.527 1.399 

113 1.578 0.199 16.810 1.520 

114 1.594 0.207 16.961 1.640 

115 1.605 0.216 17.120 1.684 

116 1.615 0.229 17.135 1.693 

117 1.625 0.235 17.249 1.786 

118 1.642 0.240 17.451 2.007 

119 1.670 0.245 17.509 2.084 

120 1.694 0.261 17.605 2.179 

121 1.705 0.267 17.734 2.264 

122 1.717 0.277 18.049 2.328 

123 1.732 0.287 18.447 2.375 

124 1.747 0.298 18.592 2.437 

125 1.763 0.308 18.657 2.543 

126 1.779 0.316 18.796 2.593 

127 1.795 0.322 18.952 2.641 

128 1.810 0.329 19.137 2.663 

129 1.823 0.338 19.329 2.672 

130 1.835 0.346 19.519 2.676 

131 1.845 0.354 19.707 2.683 

132 1.854 0.356 19.882 2.817 

133 1.862 0.357 19.905 2.992 

134 1.870 0.359 20.049 3.111 

135 1.883 0.362 20.460 3.234 

136 1.888 0.364 20.746 3.304 

137 1.896 0.368 21.068 3.310 

138 1.911 0.378 21.380 3.320 

139 1.928 0.391 2.1.748 3.354 

140 1.949 0.402 22.046 3.436 

141 1.969 0.408 22.348 3.443 

142 1.982 0.422 22.397 3.452 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page- 1343 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

143 1.999 0.42& 22.407 3.490 

144 2.011 0.432 22.417 3.552 

145 2.022 0.434 22.922 3.588 

146 2.035 0.439 22.951 3.600 

147 2.043 0.450 22.976 3.616 

148 2.049 0.460 23.017 3.627 

149 2.063 0.467 23.073 3.636 

150 2.085 0.472 23.161 3.676 

151 2.104 0.480 23.218 3.882 

152 2.117 0.491 23.253 4.011 

153 2.127 0.503 23.337 4.047 

154 2.138 0.505 23.425 4.067 

155 2.152 0.515 23.534 4.081 

156 2.168 0.522 23.652 4.116 

157 2.186 0.527 23.739 4.251 

158 2.205 0.537 24.606 5.099 

!59 2.224 0.549 25.615 5.383 

160 2.242 0.568 26.073 6.362 

161 2.268 0.586 28.496 7.926 

!62 2.308 0.610 29.772 8.429 

163 2.352 0.648 31.056 9.201 

164 2.406 0.677 33.351 10.825 

165 2.421 0.699 34.890 12.291 

166 2.435 0.720 35.937 13.366 

167 2.470 0.738 37.012 14.428 

168 2.501 0.767 37.892 15.318 

169 2.537 0.828 39.028 15.699 

170 2.571 0.855 40.406 16.073 

171 2.625 0.869 41.379 16.475 

172 2.657 0.885 42.033 17.158 

173 2.683 0.900 42.432 17.532 

174 2.701 0.941 42.742 17.965 

175 2.717 OS79 43.399 18.242 

176 2.732 1.002 43.895 18.283 

177 2.756 1.025 44.227 18.480 

178 2.781 1.047 44.926 19.576 

179 2.8!1 1.065 45.256 20.015 

180 2.853 1.089 45.553 20.203 

181 2.898 I.l09 45.753 20.433 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - I 344 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

182 2.946 1.133 46.210 21.025 

183 2.988 1.158 47.017 21.882 

184 3.023 1.184 48.185 22.204 

185 3.057 1.209 48.741 22.859 

186 3.076 1.222 49.462 23.533 

187 3.101 1.231 50.313 24.281 

188 3.120 1.239 51.285 25.078 

189 3.136 1.254 52.076 25.276 

190 3.151 1.278 52.857 25.578 

191 3.163 1.300 52.876 25.859 

192 3.209 1.313 53.067 25.985 

193 3.223 1.324 53.777 26.153 

194 3.237 1.340 54.242 26.582 

195 3.263 1.367 54.489 27.067 

196 3.302 1.387 54.601 27.456 

197 3.338 1.402 54.912 27.805 

198 3.3n 1.417 55.588 28.070 

199 3.390 1.432 56.266 28.590 

200 3.428 1.446 56.617 28.914 

201 3.470 1.460 56.863 29.063 

202 3.493 1.477 57.204 29.502 

203 3.509 1.492 57.371 29.697 

204 3.522 1.501 57.487 29.713 

205 3.533 1.510 57.728 29.783 

206 3.550 1.522 58.097 29.942 

207 3.578 1.561 58.572 30.284 

208 3.607 1.585 59.024 30.755 

209 3.630 1.597 59.321 31.287 

210 3.658 1.607 59.715 31.549 

211 3.701 1.627 60.045 31.820 

212 3.745 1.645 60.453 32.250 

213 3.778 1.656 60.935 32.546 

214 3.814 1.663 61.307 32.808 

215 3.825 1.669 61.666 33.060 

216 3.835 1.674 62.148 33.204 

217 3.844 1.685 62.532 33.341 

218 3.853 1.700 62.546 33.414 

219 3.864 1.704 62.559 33.514 

220 3.874 L706 62.570 33.640 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1345 
ILLINOIS REGISTER 

POLLUTION CONTROL BOARD 

NOTICE OF PROPOSED RULES 

221 3.891 1.709 62.846 33.692 

222 3.928 1.711 63.097 33.711 

223 3.966 1.714 63.150 33.733 

224 4.008 1.718 63.150 33.770 

225 4,010 1.721 63.150 33.796 

226 4.012 1.723 63.150 33.810 

227 4.016 1.726 63.150 33.821 

228 4.019 1.729 63.150 33.839 

229 4.057 1.731 63.150 33.865 

230 4.065 1.733 63.150 33.894 

231 4.071 1.735 63.150 33.918 

232 4.073 1.743 63.150 33.944 

233 4.075 1.749 63.150 33.985 

234 4.077 1.753 63.153 34.014 

235 4.079 1.757 63.159 34.032 

236 4.081 1.762 63.173 34.051 

237 4.083 1.767 63.193 34.067 

238 4.084 1.772 63.214 34.079 

239 4.085 1.776 63.233 34.085 

(Source: Amended at _IlL Reg. __ , effective 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1346 
SUMMARY OF TESTIMONY 

OF ELIZABETH R. TRACY 

IN SUPPORT OF 

PROPOSED AMENDMENTS TO 

35 ILL. ADM. CODE PART 240 

AUGUST2000 

Illinois Environmental Protection Agency 

Bureau of Air ' 

Division of Vehicle Inspection and Maintenance 

1021 North Grand Avenue, East 

Springfield, IL 62702 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 134 7 
SUMMARY OF TESTIMONY 

The purpose of the Agency's proposed amendments to 35 ill. Adm. Code Part 240 is to: 

1. incorporate a necessary, one year delay into the implementation schedule . 

of"pass/fail" on-hoard diagnostic (or "OBD") testing, 

2. to retain current, more lenient "start,np" vehicle exhaust emissions 

standards for most model year 1981 through 1986 vehicles required to 

receive an IM240 exhaust emissions test, and 

3. to add minor definitions to the rule to correspond with current federal 

guidance. 

The following is a discussion of the two substantive proposed amendments to Part 240; 

first, the amendment to the OBD testing requirement, second, the amendments to the 

vehicle "start-up" standards. 

Proposed On-Board Diagnostic Testing Amendments: 

Illinois' vehicle emissions test contractor, Enviratest lllinois, Inc., is perfonning 

"advisory" OBD testing on model year 1996 and n\)wer vehicles. The OBD test program 

is required to accurately read diagnostic information reflecting the "health" of various, 

important emissions control components and systems as recorded by a vehicle's 

computer. This is used to determine a vehicle's compliance with applicable OBD 

standards set for these emissions control components and systems. Under "advisory" 

testing, the OBD test is attempted by our test contractor to be performed on 1996 and 

newer vehicles, and if readings can he obtained, the owners of these vehicles are 

informed whether or not their vehicle would have passed the test. Under "advisory" 

OBD testing, these vehicles do not fail the entire emissions test if they do not teceive 

passing readings on the OBD test. 

Under current federal rules; our state implementation plan for meeting required ozone 

standards, aJJ.d in the Board's Part 240 mles, Illinois is required to convert the "advisory" 

OBD test to a "pass(fail" OBD test on January 1, 2001. From that point onward, vehicles 

receiving the OBD test would have to pass it along with the other elements of the vehicle 

emissions test. 

During the past several years, the United States Enviromnental Protection Agency 

(refened afterwards as ''USEPA"), and several states have encountered difficulties with 

insuring that all post 1996 vehicles equipped with OBD eqtripment can be accurately 

~ tested. The Agency understands that USEP A will soon propose in a federal rulemaking 

that states will be aflowed to delay implementation of "pass/fail" OBD testing for at least 

one year, that is, at least until January 1, 2002. 

The Agency believes that due to the difficulties we have cunently encountered in 

accurately and efficiently performing the OBD test oi:t 1996 and newer vehicles, the 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (JIM) Program: Attachments Page- 1348 
vehicle emissions test program would benefit greatly if we can delay implementation of 

"pass/fail" testing for an additional year to continue to work on perfecting the OBD test 

system. The Agency therefore proposes in this rulemaking to adopt this delay. The 

Agency further understands that this action is acceptable to USEP A, that it will not result 

in the loss of emission reduction credits generated by the inspection and maintenance 

program, and that it will help insure that we can implement an accurate and effective 

OBDtest. 

Retention of "Start-Up" Exhaust Emissions Standards for Most 1981 through 1987 

Vehicles 

Currently, vehicles receiving the IM240 exhaust emissions test are being evaluated using 

"start-up" standards for hydrocarbons and carbon monoxide. These are somewhat more 

lenient standards, designed to he applied in the first years of our enhanced inspection and 

maintenance program to preclude high failure rates and readily move the vehicle fleet 

tbrough the first cycle of enhanced testing. In accordance with federal guidance and as 

reflected in Part 240, these "start-up" standards are due to be replaced with more 

stringent, "final" standards on February 1, 2001. 

Illinois and several other states have determined that certain older vehicles will not be 

able to effectively comply with these more stringent standards. The Agency anticipates 

that many of them will, in fact, fail at a much greater rate than currently is the case under 

"start-up" standards. Additionally, the Agency believes that there will be little chance of 

these vehicles being repaired effectively to solve their emissions problems. Finally, the 

Agency estimates that the total amount of emissions reductions achieved hy adopting 

"final" standards for this group of older vehicles is very small. 

In light of the heightened chances of increased hardships to motorists with older vehicles 

that would occur if "final" standards were implemented, and the minimal amount of 

additional emissions reductions that would be achieved if "final" standards were applied 

to these older vehicles, the Agency proposal is to retain the current "start-up" exhaust 

standards for model year 1981 through 1987 vehicles. The anticipated loss of emission 

reduction credits will be approximately 2.0 tons per day, which fits within the amount 

that can he accommodated under the Agency's 2002 Rate of Progress Plan. Adopting 

this change will promote and protect acceptance of the emissions test program by not 

inordinately failing older vehicles, and the loss of emission reduction benefits will not 

have a significant effect on the total contributions of the vehicle emissions inspection and 

maintenance program to Illinois' efforts in cleaning its air. 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page- 1349 
SUMMARY OF TESTIMONY 

OF JAMES R. MATHENY 

IN SUPPORT OF 

PROPOSED AMENDMENTS TO 

35 ILL. ADM. CODE PART 240 

AUGUST2000 

Illinois Environmental Protection Agency 

Bureau of Air 

Division of Vehicle Inspection and Maintenance 

1021 North Grand Avenue, East 

Springfield, IL 62702 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (1/M) Program: Attachments Page- 1350 
SUMMARY OF TESTIMONY 

The purpose of my testimony is to provide information on the results of evaluations 

conducted to determine the potential impacts of the Agency's proposed amendments to 

35 Ill. Adm. Code Part 240, particularly the proposed retention of start-up IM240 

exhaust emissions standards for 1981 through 1987 model year vehicles. 

The evaluation consisted of analyzing results of IM240 emissions tests conducted 

during the ftrst one and. one-half years of enhanced program operation to determine the 

current and projected behavior of the passenger car and light duty fleet. Emissions 

modeling was conducted to estimate the potential loss in emissions reduction benefits 

due to retaining start-up standards for specific model years of vehicles. 

ESTIMATED IMPACTS OF PROPOSED CHANGES ON FAILURE RATES AND 

RETEST VOLUMES. 

Prior to implementation of enhanced I/M program, the lllinois EPA projected annual 

test volumes based upon use of historical Illinois vehicle registration data, and 

emissions test failure rates predicted to result from application of applicable emissions 

standards. In the absence of IM240 test data, Illinois EPA relied upon data from 

USEPA research programs, and operating IM240 programs to estimate how many 

vehicles would fail the initial test and require repair. Now, with approximately one and 

one-half years of operating experience and data on over two and one-half million 

IM240 tests, the lllinois EPA can more accurately predict how vehicles will actually 

perform when tested. Data indicates that older model year vehicles, if tested against 

final IM240 cutpoints or standards, will be expected to fail at more than double the 

cnnent rates. For the oldest vehicles subject to the IM240 test, final standard failure 

rates in excess of 50% are expected. Retaining start-up standards for these vehicles has 

been recommended as a means to maintain public acceptance of the liM program, 

without significantly impacting on program effectiveness. As summarized in the 

Technical Support Document, the Illinois EPA has estimated that in calendar year 

2001, 50,000 fewer vehicles would fail the initial inspection if start-up standards were 

retained for 1981-1987 model year vehicles. 

ESTIMATED IMPACTS OF PROPOSED CHANGES ON liM PROGRAM 

EMISSION REDUCTION BENEFITS. 

Using the MOBILES emission factor model, Illinois EPA has estimated the loss in liM 

Program Volatile Organic Material (VOM) reductions due to retention of the start-up 

standards. The results of this analysis indicate that the proposal would have a relatively 

small impact on program effectiveness, which with annual fleet turnover, will diminish 

each year. In 2002, tl1e change would reduce program effectiveness by approximately 

2.0 tons per day ofVOM reduction in Northeastern illinois, or approximately 3% of 

1 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 1351 
total liM program YOM reductions. By 2006, the change would amount to 0.4 tons 

per day or 0.6% of total I/M VOM reductions. 

This loss in effectiveness is small, and can be accommodated in the Illinois State 

Implementation Plan. 

2 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page: 1352 
TECHNICAL SUPPORT DOCUMENT 

REVISIONS TO TRANSIENT LOADED MODE EMISSION 

STANDARDS FOR 1981 -1987 MODEL YEAR VEHICLES: 

AMENDMENTS TO 35 ILL. ADM. CODE PART 240 

AUGUST 2000 · 

Illinois Environmental Protection Agency 

Bureau of Air 

Division of Vehicle Inspection and Maintenance 

1021 North Grand Avenue East 

Springfield, IL 62794 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1353 
SUMMARY 

Effective February 2001, the Illinois Environmental Protection Agency (Illinois EPA) is 

scheduled to implement a change from current "start-up" transient loaded mode (i.e. 

IM240) emissions standards contained in Section240.162 to more stringent "final" 

standards contained in Section 240.163. The start-up standards were designed primarily 

to ensure a smooth implementation of the enhanced Inspection and Maintenance (I/M) 

program, providing an opportunity for the repair industry to familiarize itself with IM240 

failures and repair techniques. 

Illinois EPA proposes that the implementation of final emission standards be limited to 

model year 1988 and newer passenger cars and light trucks, retaining the start-up 

standards for 1981 ~ 1987 vehicles. This change is designed primarily to provide relief to 

owners of these relatively old and high-mileage vehicles, which would otherwise be 

projected to incur high rates of IM2.40 exhaust test failures if final standards are · 

implemented. 

Illinois EPA has evaluated the emissions reductions impact of th.e proposed change and 

has determined that the loss in volatile organic material ("VOM") emission reductions 

credit will be small (approximately 2.0 tons per day ("TPD") or 3% of liM program 

emission reduction benefits in 2002). Due to fleet turnover, the impact of the proposed 

changes on VOM reductions will be reduced each year (projected to be less than 0.5 TPD 

by 2006). 

The proposed change is expected to reduce overall initial IM240 failure rates in the 2001-

2002 period from 18% to 16%. 

FLEET CHARACTERIZATION 

Model year 1981 - 1987 passenger cars and light duty trucks currently represent 

approximately 11 %of the vehicle population in Northeastern Illinois and Metro-East St. 

Louis areas. These 550,000 vehicles contribute approximately 16% of on-highway 

mobile source VOM emissions in the nonattaimnent areas, and are projected to provide 

12% ofr/M program VOM emission reductions in 2003. 1 These vehicles are currei)tly 

13 -20 years old and are generally high-mileage vehicles with average odometer 

readings well over 100,000 miles (122,000 miles for passenger cars and 128,000 for 

light-duty trucks). 2 

~ The evaluation year of 2003 was chosen consist~;nt with the en·d of the second two-year test cycle (i.e. all 

vehicles tested using final emission standards) representing full implementation of the enhanced I/M 

?'Qgram. Average odometer readings by vehicle type for 1981- 1987 vehicles tested between January 1 and June 

30,2000. 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1354 
FAILURE RATE AND EMISSIONS REDUCTIONS IMPACTS OF RETENTION 

OF START-UP STANDARDS. 

Illinois EPA evaluated the projected impact of revising application of final standards on 

the vehicle fleet, based upon review of IM240 test data generated between February 1999 

and April2000. Obviously, retaining less-stringent emission standards will result in 

more vehicles passing upon initial inspection and therefore, not requiring repair. The 

results of this evaluation indicates that current imtial IM240 exhaust failure rate of 8% 

(start-up standards for all years) can be expected to increase to as much as 20% if final 

standards are used (all years). Figure 1 shows the actual (start-up) and projected (fmal) 

failure rates by model year for vehicles tested during the first fifteen months ofiM240 

testing in Illinois. This figure indicates what can be expected when final standards are 

implemented. Illinois EPA expects actual failure rates for each model year to be slightly 

higher in 2001 and 2002 for each model year shown since the vehicles will have aged two 

additional years. Off-setting the effect ofthis aging is the projected "residual" or carryover effect ofrepairs conducted on vehicles failing the inspection in the previous (1999-

2000) test cycle. 

FIGURE 1 

INITIAL TEST JM240 FAILURE RATES BY MODEL YEAR 

1981-1996 Passenger Cars and Light-Dnty Trncks3 

65.0% ;-----c==-------------

:=---\--~='"1'~~0-~----··------"''""''-•-·""'""'"'" ________________________ ( 60.0%. 

55.0% 

50.0% 

- 40.0% 

" <-

.~~---···--····- -+-start-Up OJtpoints . -- ······-- ---- Flroa! Cutpoinlll 1 

47.9% 

-FI11al 88-j. Onl C oinls I 

---------~ 

-----~-= ---=---------~--------------------~~-~:.. ---1 ~ 35 0% hf--"" l ~ 30.0% ______ ,,_,, ____ 1 

~ 25.0% +----~=---

15.0% 

10.0%. 

! 5.0% ·y--·-

~c--~----·-- . ---1 

o.o% L--~-~---~-~-~-~~-~--.:'.':,_.ii:~~~~ 

1981 1982 198~ 1984 1985 1986 1007 1988 1981) 1990 1991 

Model Year 

3 Based upon 5% random sample of vehicles selected for full-term II\.1240 between February 1, 1999 and 

April 30, 2000. 

2 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (VM) Program: Attachments Page- 1355 
The significant increase in failure rates for vehicles in the 1981- 1990 range prompted 

Illinois EPA to determine failure rate and emissions reduction impacts of retaining the 

start-up standards for these older vehicles. 

To assess the impact on emissions, Illinois EPA conducted emissions modeling using 

USEPA's MOBILE54 emissions estimation model, calculating fleet composite VOM 

emission factors for the July 2003 and 2006 evaluation years for various emission 

standards scenarios, which vary by the model years in which start-up IM240 standards 

would be retained. The model was run using input parameters specific to Northeastern 

Illinois, including local area ambient conditions, fuel composition (i.e. reformulated 

gasohne), and fleet/traffic composition (i.e. vehicle registration distributions and VMT 

mixes). 

The results of the analysis are summarized in Table I, which compares the projected JIM 

pta gram benefits for the scenarios evaluated. The results indicate that For July 2003, 

retaining start-up standards on 1981-1986 model year vehicles will reduce overall I/M 

program effectiveness by 0.6%, corresponding to 0.4 TPD ofVOM. Extending the startup model year range to 1990 is projected to reduce overall program effectiveness by 

7.7% or 5 .1 TPD of VOM in 2003. By July 2006, due primarily to vehicle retirement, the 

impacts are reduced to 0.3 %I 0.2 TPD ofVOM and 2. 7% I 1.9 TPD respectively. 

Scenario: Final 

Stds. 

1981+ 

· Projected 1/M 64.9TPD 

Benefit (2002/ 

Loss in JIM 0.0% 

Benefit (2002) O.OTPD 

Projected liM 66.2 TPD 

Benefit (2003) 

Loss in I/M 0.0% 

Benefit (2003) O.OTPD 

Projected I/M 70.0TPD 

Benefit (2006) 

Loss in I!M 0.0% 

Benefit (2006) I O.OTPD 

TABLE I 

Northeastern Illinois 1/M Reductions 

MOBILE5a h VOM5 

I Final Fiual Final 

Stds. Stds. Stds. 

1987+ 1988+ 1989+ 

63.9TPD 62.9 TPD 61.5 TPD 

1.5% U% 52% 

1.0 TPD 2.0TPD 3.4 TPD 

65.8 TPD 65.2TPD i 64.0TPD 

i 

i 0.6% 1.5% 3.3% 

0.4 TPD 1.0 TPD 2.2 TPD 

69.8 TPD 69.6TPD 69.4 TPD 

0.3% 0.6% 0.9% 

0.2 TPD 0.4 TPD 0.6TPD 

Final Final 

Stds. Stds. 

1990+ 1991+ 

60.3 TPD 58.9 TPD 

7.1% 9.2% 

4.6TPD 6.0TPD 

62.5TPD 6Ll TPD 

5.6% 7.7% 

3.7TPD 5.1 TPD 

68.9 TPD 68.1 TPD 

1.6% 2.7% 

!.! TPD j 1.9 TPD -

4 Emission factors were.generated using MOBILES a_ h, the version of the model used in preparing the 

Illinois IJM SIP and Rate of Progress Plans. 5 I/M YOM emission reduction foi evaluation yeq.r shown relative to the "no I/M" base case scenario for 

the same year. 6 I/M VOM emission reduction for evaluation year sho\Vll. relative to the "no II.M:" base case scenario for 

the same year. 

3 

Illinois Ozone SIP Revision- Vehicle Emissiqns Inspection and Maintenance (1/M) Program: Attachments Page- 1356 
Extending the retention of start-up standards to newer model years begins to significantly 

erode program effectiveness as indicated by the percentage losses of emission reduction 

benefits shown above. 

PROJECTED IMPACT OF PROPOSED REVISIONS ON THE ILLINOIS SIP 

Illinois EPA has been relying on VOM emission reduction from the liM program to assist 

in meeting Clean Air Act requirements in ozone nonattainment areas. In the 15 Percent 

Rate-of-Progress Plan ("ROP") for 1996 (Ref. 1), lllinois utilized a VOM reduction of 

nearly 8.5 TPD from 1992 improvements made to the JJM program implemented in 1986. 

The 15% ROP Plan was approved by US EPA on December 18, 1997 (Ref2). In the 9% 

ROP Plan for 1999 (Ref 3), Illinois utilized a total VOM emissions reduction of22 TPD 

from liM or over 14% of the total VOM reduction requirement of153 TPD. USEPA 

proposed approval of this plan on March 3, 2000. 

Illinois EPA is currently developing the 9% ROP Plan for the next milestone year (2002), 

which must be submitted to USEPA at the end of this year (December, 2000). Although 

the Plan is not yet completed, the Plan anticipates enhanced liM Program emissions 

reduction contribution of approximately 35 TPD. The proposed revisions to IM240 

standards will reduce this contribution by 2 TPD, which can be acconnnodated in the 

2002 ROP Plan. Further, the proposed revisions do not impact on the previous ROP 

plans (1996 and 1999) and will have minimal impact on 2005 and 2007 ROP plans .. 

PROJECTED IMPACTS ON IM240 FAILURE RATES 

Based npon the selection of 1981-1987 as the model year range, it was possible to 

estimate the impact of retention of start-up standards on projected initial IM240 test 

failure rates. Using data from the first 15 months of!M240 testing, and projections of 

initial test volumes by vehicle type and model year, Illinois EPA has projected the 

numbers of!M240 failures and failure rates for tbe years 2001 -2006. These projections 

are listed in Table 2. 

TABLE2 

PROJECTED INITIAL IM240 FAILURES AND FAILURE RATES 

CY 2001-2006 

2001 2002 2003 2004 2005 2006 

Final Stds. All 291,208 299,671 311,374 320,187 332,186 341,363 

Years 18.2% 18.4% 18.7% 18.9% 19.2% I 19.4% 

Start-up Stds. 242,287 271,410 284,781 l 301,460 310,960 322,809 

1981-1987 15.2% 16.7% 17.1% 17.8% 18.0% 18.3% 

Decrease in 48,922 28,261 26,593 18,726 21,226 18,555 

Failures/Rate 3.1% 1.7% L6% 1.1% 1.2% 1.1% 

4 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page- 1357 
As shown, the impact on initial failures and failure rates is significant in the 2001 -2002, 

with the impact lessening in 2003 - 2006 as the numbers of these vehicles is reduced 

through fleet turnover. 

REFERENCES 

1. "15 Percent Rate-Of-Progress Plan for the Chicago Ozone Nonattaimnent Area, 

1990-1996, Revision to the illinois State Implementation Plan for Ozone", Illinois 

Enviromnental Protection Agency, November, 1993. 

2. "Approval and Promulgation of State Implementation Plan; Illinois", 

62 FR 66279 (1997). 

3. "Supplement to 9% Rate-Of-Progress Plan for the Chicago Ozone Nonattainment 

Area, 1997-1999, Revision to the Illinois State Implementation Plan for Ozone, 

AQPSTR 1-00, Illinois Enviromnental Protection Agency, February, 2000. 

5 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1358 

( 

( 
625 ILCS fi/13A...;W; VEHIGLES 300 

5/l.SA-115 . .<• Effectiveness ' 

§ l3A.;.;l15i · EffeCt:J.VeneSi:C-: This Chapter 

to be 

lSA -shall· cease 

effective ·,.w~en- tlie continuation· 

been 

-of the· ·progl'am hilS 

'implemented':Wld_er Chapter 13B.l 

P.A. 76--!586, nsAcus, Sept. 24,1984; 

•dOed b'yP.A. 83-1477, § 1, o!ff. 

Ameiirled 'by Pk86-'14B3, 

l99p;_ PA.-'8~&3, 

• 2, off_ Sept 12, 

_t~S',_Elff. ~an._ l:B,-1994. -_ __ · 

:~~:e~f~;~~~[-;t!~l; __ e~---~5 :~ 11_1~~~1~5: ' .: '_,._ •.... ' .. : ' - ._, __ ~ -' - ' ' ;:-' j; ' 

yl,j.Al.'Tll:R )3)l.,, ,EMISSIO,NJNSPECT!ON. 

seritiori·-.Y 

5/l3B~I. : ':· ·ShQit ·titJ.I!'>'·'· 

·S/l3B-.::o~·-. '"'De±mitioJis>'. . 

5/lSB..;,;lU.-'· Program. "5/11iB45}:. ·Inspections;::_ '' · 

-5/13:&=.20; _,· Rules -arid :-sf-.and.B.rrlS. 

'5/l3'B-25. · ·PerfonnanCe oflnspeetions. 5/13~0; -iWaWers>··-,·:.--. · · 

_.5/.J,~B;:-:35'. Jnqplfles, . ~ " 

E!18B+t0.( .. Grievance proced\ll"e. 

:6flzB4K,<_ DQntr?-~. "r'· -5/13B-50. :cosw~..: ·. ,-_.,· ... ·. 5/IaB-Ss.. En£o:re£ment. ·· ·smm~o. '(Jthe.J. "offenses:· 5!13B-70. Legislative--intent/ · 5}J.3B-7fi. :·:Hom-e rill~: · __ ,,_,_ · · 

Date Effecthe 

CIW:pt&--i8B-·"!iJJili!.-idd.iJd.:b?/PA. "88:..... ' ~--~·-"'·' 

593, .§ 15, ejf. Jan..J.-,.1991,. 

5/I3B~I. Short; title·· · ·.--

Vehicle 

§· 13:S.:.l.·-

Emissions 

Short ·title ... 'This ·Chapter may-_be-.cited 11!!.-~e 

Inspection ·Law iJ.f l'995;r:·: · 

. PA 7il'-15B<l," 

1~1994; 

! 13B--1,-.addod by P .A; 8£>-S_>lll, H5, ,'eff. J•n. 

" ' . ·,-:,~,., .. , 1:;i'f{·;·; -;-·, · -~·., \P C<·Xi . 

5/L!JB"-'5. -_-_:_-Defi[dtiOris--u-~ ·: .. :> · '.' .. §·: 

-----.-

i3B-.5. -·nefuti~o'hfi!· .. ··Fci£- lli·rr· -_ .. ,., Ok~-,·otttUS'Dliil,;:a·er.·-·: '" ··-·· -._ ....... l'Ury,_.;•. "Affected c~untte~''::lrl,e.al;!a.::-C~~k '• .•.. ~'-

IA!Jce _.qount;V;.-_.- (Joun.ty; _ .Dul'ag:e C().~_J.Y; 

thpse.-.-.PB#i. :O(~e. _ Couht:r _that_ .·;u-e_'.llOt indudea 

qesignated_by ·.within th~·u.S.'Postai"Seriiee 

... 2riy_;_of,.!-h~ .. :!f.o1I~~_.zn,J_ . code. ar~as •. ~-~ 

t:1ID:i amendatory 

Ori_.Qle effecl.iv-e Oate of 

Acl ·of/l992f~:· ·-60109,--:60119, 

60142, 

-601'35; :.130140, 

60144, 60llf7, 60151, 601~. 60178, 60182,'60511,-•60520, 

0054-5, and_ 60:554;--ihoae p.ar.t<; .of Kendall .County' that· a.re:not 

included_ 

deaignatea:.by 

-within _any of the follov.ing ZIP code areas, as 

the U.S. Post.al-Ser-vice·on: the-a'fective-.date 

this 

of 

60541, 

.-amendatory Aet of 1994; 6!1447, 60512, 60536, 605.17, 

those parts of 60543 thaL~ nqt_within 

defined 

the ... eensus 

McHenry_ _l:l:rbanized Qouitty'·.i;!-i;tt area,, _60~-~ and HO~ao;. thoa~--- parts of _.·mj_·l'lot ,.iitclud:ecJ 

'foll~\l;ing~ZIP 

·Within . anY _-_of the 

_code_ru;eas','_as.'·_deSignate:d by the-U.S. 

Se'rvi,ce· 

'Postal 

60001;_ 600~, 

on the_ ·effe~ti\i-e date of .this am.enclatory Act of -1994_: 

and··601~i·'._tbO~e··_jtarls 

'60_0B4; 6007l/6007g, ~60Q97·; '60098; '60142,- .601_~2, 

·ofW'ill.'Co'Urity within 

that 3re not-'iri8udE!d 

the U.S. -alzy of-the foUowing.mP· ~e ar_ea.s;·as :designa~:_b_J 

Postal Service on the ·effe~tive Hate Of'thi.S·ilirieoda~ 

.tocy Act .@f J994: 6040l-/6fl4(l:J,u60408,--£0410, 6041£;/6041.8, 

parts 

604.'Gl, 60442, 00447, 60468, 60481, 6El935 and ;60050;·- those 

of Madiso-n_ County-,_.tb,~t _are:-not the .faJJowing includE;cl, -within.:anY~of 

Postal;Service 

-ZIP ~e .areas, .iu>-·il~ated ·ey ·the ·-u.s. on the:effect.iv.e.date·of this arnendatory .. ·Aet·:of 

.1994:, '62001-;.- 62011;:, .Q202t.-62026, :62041k-6205B;·;fJ2{}6.1;.:620~7. 

620'14, -:62088; -62.00.7 ,_,62249, :62275,,_aJ1P. 

MoiJ).'9e 

·!322Sli :ith!!Sce, pa$: of 

:Gounty.-.-.that_.-,_an:::,-D!)t -lncluded~ .. -wJtbin·;-Ja-ny. ·_af the 

.follow:ing.ZII;'- code are2:£,_,_as cles:ign~O: by .. the.-U-~.,-J;'-ostaJ 

Service .on .the ·effectiye 

6224-4, 

.date. of'~ amencla..tQty Act .o.r:J.994: 

62298; 

-62248,: 62256,- 62261,_ 62271;l,-1l2278_, -P_2279~~-!J2295,; art9 and those p91'ts_ of St. Clair-.County ,~_t:, ,ro:·er_;nQt 

included _within .. any --of ;_th~_-.Jo!l~i_.,_p_IP 

designated by ';C~~-:~eas,,~ _01!3 

the U.S. Po.<rt.al Service on the eff~~e. date. of this amenda~ozy --~ct Of :_-H.I~4~::_,6~i~--6~_,US,:·:'§~ 

62255, 62257,62258, .• ,\!i2??4• 62260, 62264-,&265t''62269;·62278,·62282, 

62285,~62289/8:nt:l62298;''' >' ':>•'i·::\-.,;•; •."A,:-~;. < ,_._.:,-,·_;;!;•,-..-

"Board" means the-illinoiS Pollution Coritrol Board.,:: 

"InsPectiori area" means Cook .(Jo.urjtYr:DuP_agEi{3~Ui-it;Y, 

Lake County and those portiQ!]s·of·Kane;;cKendilll,--Matlison, 

-M cH~,. Mort~1,% ·.WW-r:a!~d iS:t~_OJ.l!ll:,,:QQlJP.tjes)nclu.ded. 

the 

defini.tiol,l'¢;!,'-aff~q,_~~-~!.,-;~-,:ci.}ii1\.._:::;.\}·---'·-

in 

''~'·'·~,_),·: 

indicated· 

. ~0wrJer",-',rnfi~. -th~ ,.,regi$teretfj~~-. 'qr:_. :·tbe::_':(}:lri~ _, a.s -·QJI_ ·t.h,hYE;lhic}¢:e_ ct:eglsl<J:'.a!:i_o~:·~ii-IIJ-_::J.h.e. 

~unrE}giet:en4}·v.ehicle, 

· ~_!'!::·cOJ:--an 

.':~~';t~-tb_~··!Pleanlng,.\'3et,Jq~.:ip 

Sectio~.:~~l:DihQf'-ti$:Qritl~:··_.~L_.. ·'· .. _- .'· -'·<,~j_::_:_~ .. _ ..' .. _ .. -.,:;',-... , · ~ -:"Prograrn'1.-·.me!Uie:tlie':li/E!lllcle::eniiSsion· ·inaJ>ectioncJ-'rog:nml esta.bliahecl Under·thls,Ghil.pt.eli;,: ;,: ·: .. "!:'<'''. c:.-t·,,-·: "'"·'' . .-:-:.! 

-, ~'ReSidetl_t;, -~clUd·ee~imilli'2J ',Pimloris;dro-Sigri .aD'd:.:dOniestic 

corporations, ·partrieniliips, ~-associatiotu;l, ·.nnd .a}l;-·othe:r 

mercial· 

.comand • governme_nt:il .- entities/~_-·,For:-the: 

.ternfuling.'I'f!sidence·,""the.'.;Gwner 

cpurpoae -,~iliie'­

sumed- .to 

_ .Of.' 3;· '\fehi_cle --:shaJl:.-be ;pre~ 

-reside .. at-- the-.addreuP:indicated on,;th,e·sehide's 

.registration, A--_govern:menf.a.l ·etJfity,oriricluding= 

government. 

.!:.he •fedri 

ment 

aud·]ts. agencies,, and .any ... u.nit of -'loeaJ .. govemaffected 

.or BChool district;.,any part :Of whi.ch,'is'JoCided within: :an .-county, ·shall :he' rlee!ned. 'a ,reaideiit:oot: 

oounty 

.an ,affected 

governmental. 

for th~- jltiiTI_~ of any3<:iliicl~. ,~~ ~-~.o_wn~_.b2[.,the 

-entity and r~gular:ly operated -.eOUii.tf~·~"<: -~. 

in .an __ affected . . '' ~,,,.,.,~,:( ···--·~"·''' .. ,.,._. · ;;-:.·.e:· 

:Article "RegiStr-ation"· IV of Chapter 

Of il.' vehicle ·means ·'.its registration under 3 of thifl 00de~t·~··.· _.,::-. · _-, · ' 

P.A.-76··'-1586;-§ J3B-5, added bf-IP'-'kt 1'8, .. 1994·:-;;!·Amerided·,i)y·'P .. ~. §'-1-ii·;---eff~ Jan. !A.;>:OOT-89,; 

:·1.:625'Il}bf?~1ifJ..4()Q.:et'-e!~.;.'; 

':§;;Q5, ·"eff, ·_Jan. '.1, 1998. 

· , ... ;-.~,_,.,.,,_ o:, --" ' ~-, -· r,' '\ _.. · .. :.::, 

~~~~B~io~'_o_,p;:~-':;:;' ·;;·,.:;.·.? .. ;,,~.~-~::.-:~.~ -:~J_, .. , .. 

:.·)_ 

./{a)'-The 

3?~~1()_~-:-~.t~~~i¥~ ,,.::, .. , .. : .. :·;:';;·_:1:,:/ .. ~r;~::.·_:r-:- _.,,~ .... :·.- : .. ,_,., __ : , -- . 

1.,--:.1W6., 

-f\gen_w -$.!'Jl ... ~.s~~A-'J?I1l~~- tq .b~gin-Jli.Ilu~ 

<·~_.:,J·.~_duee.:,_~.~-- ';~~%.-:oJ:."'P.@u!-anJ~ 

vehie~es,~;A\fl< 

-~.Y-_ ·FlO'to/ 

·r:niJirln.lum, ~-H';~gi~"¢:ph~_.pr~yidE; 

tpe following:, 

fOr-:_i~-U:Pf 

~'-.} ;.::.-:-~: ·;~:,.,<;;:!,;.'!~.: ; ._..,'c., -;,·,';~.r:·:-,-;;p.-tr;,;,_r.,, 

-- :;.{lf 'Fhe·rinspeetion.-:of~i<!ertain· ·-:motor, •:V.ehicles.,.-.:eve·cy-. 2 

!Y.BD.l"S;-'llB .:reqcil'ed-.. nnder Se~l;iti 13B-:J:6;'''.J.i" ·,_·:~ c:iir.io.7;_;:,rc : · 

(2} Thi;f,establiShm'ent~f-:m~- ·openitioh'{ff tion-Stations·,," "official ·1J18Jjec~ --·•;•:- · ;._,··;.·:~. -,'-, -~.;: •<;'::' 

(~) _Tbt!"O~Siiri~_uo~--~~-'-.~~-~-:~-~-.fqt4fi~.M(ait~4:~s~,g proCeijut~K-" · · ·· ·-- -,::·._ ·=:.:::';·:·: :_ :: ,·: --~--·: .... " ·'.:,:;: _:: :,,:·:··_:·;-~ .. ·;·::·.;,~,_-_-; 

(4) T!t~. tr-aining and supeivisio~.:~firis.P~c~rs:_ancl_.ot,her pe!&O-nnel ' ,,. ' 

(6) Pr0Ce0tites W assure the' CO~ci operntio!h iruuilfe,. .'_J~II:~,ce_;and ,CfiJibra??~- of ~~-~q¢pment,,. . , '··. _:-'n 1,:,,._. 

. . _ (.6)·- Proc~d~s, fo.r:·~~g_-.te~t_,;resql_ts,_:and_.f@r,le,Wl}­

, ing~.and .-rp~.:releWU~t,.cl~,-an,4 ·l'~qord.@<'.~!- ~: .. ~';rti'-·-_:,:~ 

'.\{b) -Tbe'·Agency,-'Sl:iall ·p:rovide Jorc.'the· o'peratiun:caba 

cient: 

.-suffi.., 

number .{lf.,:official ·lliapect:ion statiimS--to··pr.eveilt~nndue 

-~~ulty.-' in -.-obta:ining :~e- :.ll:!sw~l:ions_,,req!iJred,_.:w:uier"~this 

-Chapter.· .. -In the .-event .that4he_cb-g~I;tc:Y>operates insp_eCtion 

s.tatioijf!· ·or-\contrar;:t:s ~w#t 4~ne- .-or~.~~ p~es ::,to.,o~ 

/M) p . Attachments Page- 1359 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I rogram. 
301 VEHICLES 625 ILCS. 5/13E.:C15 

inspection· stations· on its behaif, the 'Agency .. shall endeavor 

to: -(i) locate -the stations .so- that·-the owners of. vehicles 

subject to inspeetion reside·within 12 nriles_.pf mr official 

inspection station; and (ii) 'have sufficient inspection capacity 

at the stations .so that the -usual -waif before the start ,of an 

inspection does not exceed 20 minutes~ 

P .A. 76-1586, § 13B-10;:addecl-by P .A. &H)33, § 15,- eft. Jan. 

18, 1994. 

5/138-15. Inspections 

.§- '13B-15. InspeCtions:· 

'(a)· Beginning :with' th~ ilnpleffient:¥0~. of' the .pi"()graJII 

required by this ~hapter, eyeq motor Vehicle that is owned 

by a resident of llll affected e(lunty, ·other than a vehicle that 

is exempt uTI de!- subsection (f)_ or' .(g), is sub_ject to inspeetion 

under the program.· - · · " 

'I:he. Agency sha11 send ·-nOtice of tne· asSigne·d · inspectiOn 

month, at I~ 15 diys·before· tlui·-beginning Of the-assigned 

month, to the owner of each ·vehicle subject to the program 

For a vehicle that was sUbject to inspection before the 

effective date of.this amendatory Act of 1994 and for-Which 

an initial inspection sticker or ir.itial inspection certi,fioote''has 

already been issued, the month to be assigned by:tbe A:geil.cy 

for that vehicle l:ihall not. be earlier than the current as.si.g:ned 

month, -unless stJ -requested by -the .oWner.· .,If the assigned 

month .is later tban ... the current.assigned month,_ the_.Agency 

shall issue -either a corrected)J?.specti.o~ stieker or _corrected 

c;erf.i:ficate-for.~at_vehicle._ .... : . , :_: .. ,_· 

-1:01~ ernlssiob: inspeclio~ _ ~ckerS,_-or initia(-i.nspeCtiOO 

certifi-cates, as :the case may:·k!e,_expire on the .last day of the 

third.month.fcillowing the mo:nth _assignecl by the _Agency for 

the. first ·inspection of the. yehicle. _ Renewal inspection stickers_.or certificates expire .on the last.day_nf the third month 

following the month assigTied for )nspectiOn in the year in 

which ;the ~ehicle's .. n,ext insp~_ctlpn js _r~quired. 

, The.-A.gency-.or its· agePt-·m;i.y ·.:issU~.-,-.M_mterim· :emi~on 

Inspection sticker .. or-ee:rt.ificate for. an.y _vehicle- su\Jject.tp 

inspection· that ;-does .. not .have ·a currently -vBlid.--~mission 

inspection sticker.-. or ,certificate ,.at .the time -the .. Agency -is 

notified by' the secre-ta.ry.cl'.state of its -regiStration-:Py a new 

owner,-_and for which .an -Urttiil --~miss_ion __ inspection.-sticker or 

cerlificate .bas a.! read:; been-iBsued. interim .emiati.on inspection-·.stickus or eer:tificates expire no later- than-theJast d;cy 

of :the .sixth- complete -calendar month after---the_ -date the 

Agency issued the interim emission. _.inspection. "Stick~- or 

certificate. 

The ~e:r. ~- ~ach- vehlcl:~ scibj~ct .t.O inspectio~--~hall obbun 

an enrissi[)n inspection sticker-or certificate for .the .vehicle in 

accord!ITlee_ with thl,s .subsection. Before the eXpiration of the 

-emission inspection (·sticker- -or_ ce.:rtificate, the· ·owner shall 

have· -the! ·vehicle inSpect-ed · and, · upOn demOnstration of.'eom~ 

plia.Dce, obtain 3. ·reneWal emiBSio'n inspection '!itiCfu ·o·r ·eert:ificat.e::-:·A renffwal emission .inspection--sticker-or certificate 

Shall not be issued mo1'e -thap-5 rncintlis '.beiore the exPiration 

date· of the .. previous. inspection .sticker· IJl',.eertifie:ate. 

' (b) Except -as >provided -in subsection· (c), vehieleo!'-shall be 

inspected every :2 yeare ·on a ·scllednle that begills either in 

the second, fourth, or later calendar;year aftet the·. vehicle 

model yea't.· -The beginning test seheclnle shall. be set;by-the 

Agency and-shall be consistentv;ith the State's reqllirementE 

for emission reductions "a5 determined by the -applicable 

United States Environmental Protection Agency vehicle 

emissions:!·estimation_ .model an-rl -applica.bl£ ,guidance. -and 

rules.· 

;(c) A-vehicle may be-inspected" out .. of its--2--year in11pection 

scheilule--when a new. oWner .acquires··· the- vehicle -and -;it 

should 'have· been,- but was -not;"-in comp1i:mce with -this Act 

when-the-vehlcle,wag-.at!q'Ui:rud by the.:new Owner; 

(d) The owner of a vehiC1e--sU\?ject to-inspeCtion.-~liaU 'haVe 

the vehicle ·mspecterl a,nti·Obf.ain an'd display ·on the vehicle'·Ur 

eariy with3n the.vehiCl~; in a maitrier specified ··by the Ageney, a valid unexpired emission inspection sticker or certificate 

in the manner specified ·by the Agency, 

Any peison who violates this-sUbsection (d)'is 'girilt:J·of.·a 

petty offense, eXcept the£ a-thlr~ oi-subseqOerif'vicilati.o:h 

within one year nf the firSt vio1aJ.i0ri ·iS ·a Class C niisdf!!menrior. The fi.nf' impoSed for--a viola.tion-:of.tbis subsectiori Shall 

be not·-less than _$50 if the-violation·.£JCCillTed·-withi:ri. 60 d.aYE 

follci\Ving the date:·:Dy Whiel1 ·-.a,;·new~or reneVilil -emission 

inspeCtion Sticker or-certificate was:-requlred to ·be·obtaiiied 

for the' vehicle, ana ~-no-t ··lesS than :.-$301l: if' the •vlolation 

Occm.+ed more than ·60 da:YB after tb.B.t date. 

(e)(1)' For a:$20 'fee, to DEi Paid into -~he'-Vi>.hicle InSpectio_n 

Fund, the Agency shall inspeCt: · 

. '{A)_ Vebicl~s oPeiareci_ .. mi ie~ral-'~sdu~~~OOs VJit~·an 

· .. :.affectecl county, purs11imtto Title-40, Se(:tjO:i:i 5J.;?fi6 .of'.the 

_ c·ode of lf.edera1 R8gillations. .- _ . ::!; .,·.:-... , _:; -~_- . 

_ .. (B)._:Federa~y-~ed vehicl-es oper~ted_-·in_.Jlffected-cp~ 

.,, _ties. 

{2) 'For a:fee.of $2(1,J.o be-p-airl.into.theNehicle.Inspect.ion 

Fund, the· Agency may ,inspect: ')·. 

· (A)- VElhl?:es· ·reg.i.Stered iri -iUd stiliji:iet_'_-to'J~UrisSion inspecii_ons-re'c!Utrements of e.n_otfer sta~~ ·_ ._ ... ___ . · ··-' 

(BJ VehicleS presented. for. insp~tj.on_- Oll .. 'a vriiuntary basiS:- .. - .. -........ ,'-"-• 

Any fues collected under __ this_ sab~~ctif!~ shall _not' offset 

!1.-0!ffially a_ppropriatecl Mo~r" __ F.uel Tax F\Jnqe: : ~·-

(f) The following vehicleS' are not subject tn ~spection:: 

(1) Vehicles not subject to registration under Article 'IV 

of Chapter ·3 of this Oode,l other than vehicles O"WD.ed by 

thefederal govel"Tililent.-,1-. <;-: 

(2) Motorcycles, motnr. :liJiw,m . _cycles,_ -::and -.. •motorized 

__ peclalcycles .. :--- . _ _;, · _ :_ · __ .. ,:' .. _ · ... 

· {2)- Fam:~.v_Bbicl~ an9 ~p~e:menia of hui;~alldcy: _ 

(4) Implements of,warfan;-owned ,by the.State.or_feder-

-al.gov~ent: · 

~ -(5)_ Antique,vehiele_B-and:vehicles-of; rnodel,year 1967- tl!' 

,before;• -

(6) -.vehicleS operBte~--·excluSiVely,:·-ror~paiade or ceretno-

.-. ·-mal _purposes by :any vetem~,_·fratertJ_al. ot"-dvie orgrmiza-

.. tioh; ,organized_·on a-nOt-f~r-pro~t;~aSis:_·.. · ... ,- .-. 

(7) Vehicles· for -winch ·:a ,Junking· .. det;tifi_ca.tt; _·h:u; :b,eeri 

issued ·try ·the ·Secretary of· State ·:under- SeCtion··-s..:.u? ilf 

·thlit:Ode' . ''' > . ,,., .. , ,. ,, .•. ' ' 

(sf·m~~f-~ereii'vehlcl~~';· .. -a~~ .vehic~s tli~t--.si~·~~~-

ere~-~chisivelyby,.el:Ctricicy.~-~--,~.- ' -' . _' ' 

; .. f9) Vehlcles operated -exclUsively .in o~ed amateur or professional sporting activitie\3, _as.defined.in the Envi-

. rarimental Proj;ectian Ae,l~. , 

, (10) Vehicles re"gistered in,·subject-tn,.and_in_C:ornplia.nce 

with the emission in.;~pBCtion requirements ,of another.state, 

The Agency may ·:isirue -temj:mracy or. permanent ,exempbon 

Stickers or certificates.~for vehicles '·temlporarlly;.\"J:r ·permo.· 

nently e-xempt from.jnspection ninder this' subsection ·(f) .. -·An 

exemption sticker-: .or- certificate does not" ... peed· ·to , be displayed. ·.- . 

(g) According to criteria --ihe.~ Agency maradopt,-: a; .motor 

vehicl~ may. be ·exempted-.frorn: the -inspection reiquirements 

of this Section· ~y- the Agency on the 'baB:is ·of oan <Ageriay 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page _ 1360 

( 
------·--------------··---- ----- --~-~-------------·-----

625 ILCS 5/13B-15 VEHICLES 302 

determination that the vehicle is located and primerily uSed 

outside of the affected tounties or in other jurisdictionB 

where_ vehicle emission .inspections are not required. The 

Agt:ncy may issue an annuiU eyemption sticker or certi:ficaoo 

without inspection for any .. vehiele .exempted._froll). inspection 

und~r this sub.s.ectiOn: , . · ; ,. . . . 

(h) Any owner- or lessee of-a ifleet-,of_ 15 or-more motor 

vehicles_ which are subject. to. inspection urn'ler this Section 

rnay__-.apply .to the.Agency_ for a _permit to establish and 

operate a.Prlvate_ DffichV ~pection Station. 

(i) Pun.mnt. to Title .. 40, Secti.on.51.B71 of the Code of 

Federal fulgulations, -the Agency:sball ·establish ·a prognm ,of 

on-road .teeti)]g of in-ase vehicles through.the use of remote 

sensing-. devices. The Agency shall- evaluate _the . emission 

perform:mce of 0,5%-·of the subject fleet-or .20,000 vehicles, 

whichever is less. 'Under no -circumstances shall-.on-road 

testing .include any sort of roadblock_ or .ro~i!Je pullover or 

cause any type of traffic delay\ ... ,_ . _, - , . . 

If, dul1ng tht.course,of on-road ~_spectionS,_a .. vehicle iE; 

found ·to exceed· the on-_roail .emissions standards established 

for- the model-Yea/and type of vehii!Ie;: the Agency Shall send 

a notice to the vehicle owner .. -The notice shAll document the 

occurrence md·:·reHults· ·of oil~rOad exceedanCeS~ The- notice 

of a second on-road exceedance shall indicate that the vehicle 

has-been-reassigned and -is subjecl·t.o .an ·ou~f~cycle fcillow• 

up inspection at an officia1 inspection ostation. -1n···no case 

shall the·Agency..send a. ·notice of an.on~ro~.-~xceedance to 

the owner of a ve~¢J.e.that 'V"a8 foun~ t~ _-exceed: the on-road 

emission. standa:ids ,established foi the tnodel -Yel!X and type of vehicle if the vehicle ll;; registered_out.side of the affected 

counties. . . · 

P.A. 76-i586, § l3B:::is/ adqed by P.A. 88--Q38~ $. i5, eif. Jan. 

18, 1994, Amended by-P.A: 90-1175,'§ 1-0, eff. Aug.l7, 1997. 

1625 ILCS 6/3--400 et·seq. · . 

2-415 JL'CS·!¥1·et seq;·; 

5/I3B-20. Rules and standards· 

§ '13B....:ZO-. RuleS and .st.aiitlards. {_,. · 

(a) The_ Agency shall pl'Cffli1Se. standards n~~saiy·- to 

achieve reductions- iii the--emission of hydrocarbons, carbon 

morioride; ·and OxideS 'llf- nitrogen .from motor vehicles subject 

to inspection under this Chapter. Within 120 days ·after the 

Agency ·proposes. these-- ·standards, ·.the -;Board -.shall adopt 

rules establishing standards for the emission of .hydrocar~ 

· bons,_.ca.rbon- monoxide,_ .and o~des -of nitrogen from motor 

vehicles subject -to-).nspeciion,_:under ,this .Chapter, Tbese 

roles may be amended-from time to_,time .pursuant-to-Agency 

proposals ... T_he. Board--~hall .~et -stand11!4s ._necessary to 

-achieve -the .reductions in .-vehicle-_ hydrocarbons,· ,carbon -monoxide, and -oXides of TritiOge-n · emissions, as detern:iine.d by 

the _-applicable v-e]llcle ~~sion estimation_ model· _and,.rUles 

developed by the United'''State:S :Envlronrriental.Protection 

Agency, required by the federal Clean Air Act.l' A_predeter~ 

mined rate--of-fiiilure shall not be used in deternlining· standarrlS neCessary to achieVe the Teductions in ·vehicle 'hydrocarbons, carbon monoxide and oxides .-of.-·nitroge'n elriisi>iom, 

The-emission· standards established ·by .the· Board 'for vehicles 

of model :year 1-98lc o_r:later shall-be iden~Lin substanee,'BS defined ·in "Sectilln ,7.2(a) .of.. the ·Environmental -Protection 

Act,2 to the ·emission -standards promulgated by the United 

States· EnvirorunentalProtection Agency. 

If the Administrator -of·t.he::Tinited States Environmental 

Protection Agency finds that oxides of nitrogEn emission 

reductions-are not -beneficial under Title 40,,Section 51.361(d) 

of- the~ Code of -Federal· Regulations, .the Board .shall not 

adopt ·rules establishing such standards for the emission of 

oxid~ of riitr:ogen:cunder.thls·-.Ohapter. Any ·rules--estaQlish~ 

ing these .-standards -that.-have .already been _adopted before 

the 'findings -by._the United :States 'Environmental Proteetlon 

Agency sha:ll be· repealed . by ,.the· Board .. ·by·- preemptory 

rulemaking under the. illinois -Adrni.nistrative-Procedure-::A:ct.-3 

upon petition by the Agency.·· 

Except: as other,vjae provided 'in·this- subsection;-:subsectiort 

(b) of Section 27 of the Environmental ·Protection .Act-4,and 

tile rulemaking provisions of _the -'Illinois Administrative -Procedure- Act shall not apply- to -rules· ·adop~d·J)y the .Board 

under this . subsection. Challenges ,·:tel. the. valiility;--of-:rnleS 

adqp~d -byJhe Boani ·under this su~se.cttqn .(a) IIUI.Y-_imly'.be 

brough~-by filing,a pet:itian !or. review_ jn th_e·lqlpellate: Court 

ur~cl€! _Section 29,_~f tb_e Eilvironnwn_t-W frotee1;io~:~.wi~ 

36 days :·aft_et the- ·rWe is· . .filed_-~ili-~_the: .Secretary_~ of -State. 

·(b) The Ag~ncy·'sh~.ll estahliB1i,·.and .. maY-from time-to_.tinJe amend,,procedtp'~ -designed to _rrp.plement this:ChaJlier, .. "' 

P.A.:7fi:l5~6,,-f~~-~-;-2q, add~}~.<P~,~8~-_.~:,1s,;.ef!~.-J~ 1~, 1994. '- ., •.. . ,, ' - 1-42..-U;S:C.A..,§·-,740(e_t seq. 

.2416· -ILCS .fjf7.2.. 

a-.s·ILCBl00/1-1-et.seq, 

4-41fi1LCS,51Z7. 

5/13B...,25; Performance of inspections 

§---~a_J3-;.25.''.,.·P~ffarriiaJlCe;~~,~~cli6tis;·: .. ·. _ ._. . . . 

(a) ·The -inspection ilf vehlcles l'equire_d_ mld~t'tbis--ChR:Pter 

shall be perfonned only~ (iY by_ irispedor.s· ·who 'have -been 

cert:ili6d ··by the Agency after '·Successfully· completi.J!g a 

course of training ·and_friiccii~Sfufli'pilssing a_-~ test;"(~) 

at official inspection·:mations ':O.r- -official-·on: road Inspection 

sites established'undffi-'·thls"Ch'apter; -and '{iii) ·-With· equip- ment t:.l-iat bas· been--approyea::·by ,the Agency ifai- these 

inspections. : .. _. '_-:· _____ ·:<; ___ ---_ ...... ·_--· .... _:-- _.--: ... -· -,·_ 

(b) Except ~--prOvided ·'In ·sUbsections (c)-· and ·(d), -·the 

inspection .. shall ccinsi'!it of -(if a'-'1oaded ·mace- exhaust- gas i:malysis;' · (ii) -iLD -evapO~ative eylit_erjj integriW test; (iii) :an -on~ 

board computer ·diagilostic syste~. check;· -aDd '-'(IV) a.-verifiea.-

tiori- -that ·all-Teqili.rei:i- -emission:·r_elated''rei:all 'i'epaifs: __ hirie 

been made· ·-uDder.'-.Title 40;·'-BeCtion: 51:3'70 -of· -the 'Code--of 

Federii.l · 'Regril:itions, ·and -maY- ·iUSo 'inclUde· an- evaporative System purge·test.--~The own'er·-i:Jf the Ve.hlele· or'the·OWner's 

agent Shali be··entitled to an'·-emissfon4nspectiori- certificate 

issued- by_ :in-=inspector·only _if ill Tequiri!d'tests are- passed at ~ 

the time .. O:f the ·inspection. ·" · · · · 

(c) A steady~~te idle_ exhawrl, gas, analysis _ni~y be -B'uhsti~ 

tut.ecl for the 'loaded ·mode,· eXhaUst'· gas· ·analySis -and' the 

eva~orntive ~~ge B~~-_tagt'ill:-the· -~lloiDng _caS~~; 

_(i)'_6_ri anYvehicle.~f mod~l y·~ar ;~,980 or older:· .. . 

(2)_ On : .any:,,heavy-- duty: veblcl~, __ ,with ·Jf_ man11fae~r 

grt~ss _:veh.icle--weight l'ating--.-in. !!Xcess o~ 8,500 poun!]g. 

(.3) :On·:a.nY- :vehicle: for which. loaded mode testing,.iM'icit 

possible_ due -to vehicle rlesign.or con.figuni.tion; 

(d) · A steady--state· idle gaS -analysis ·may-'also 'be · substitll_f... 

ed for. the" new procedures :specifiEid in subsection lb) in 

inspections-,e.ondueted in.calendar year.19~5 on any vehicl~:Of 

model year 1990 or: older.- .:,~~-"-

{e) ·-The exiill.Ust gas analysis sha:ll-conSist.Of a-test-Of-an 

exhaust gas -sample ·to- de.temiine-wheilier the-·quantitles-~fif 

exhaust gas pollutants 'emitted' -by' .the ; -v-ehicle meet'-

standards set· for vehicles ·Of--thattype tmder Section 

inspection A-vehicle 

cates that 

shall 

the 

:if the be· evaiuation deemed to· ·of have -the J~~~~~~~E~~~i:jj quantities·of exhaust.gas 

the vehicle .-do not exceed -.the -st:a.ndards 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (VM) Program: Attachments Page- 1361 
303 VEHICLES 625 ILCS 5/13B-40 

that"type·uncler Sedion 13B-20 or an inspector certifies:that 

the vehicle qualifies for a waiver o! the exhaust gas pollutant 

st.andru:-ds under .Section 13B-30. 

(f) The evaporative system integrity test shall -consist of a 

procedure to rleternrine if leah exist in all or a portion·ofthe 

vehicle fuel evaporation emission control system. A vehicle 

shall be deemed t-o have passecl this test if it meets the 

criteria that the Board may adopt for an evaporative .aystern 

integrity test. 

(g)_' The evaporative system· pUrge_ t-9st _shS.U eonsist of a 

:procedl.ll'"e- to verify the :purging of vapcirB storerl . in 'the 

evaporative eanlster:"·'" A- vehicle-shall' be 'deemed: to have 

Passed this test if it m __ eetB"the"criteria that the·Board may 

adopt for an evaporative SyB.tem pu:rge test. 

,(h) The" on-boarcl ~ute~-:.ctiain;stic test-shall. consist" of 

accessing the vehlcle's-- .on-bOard cOmputex~_.system,. if_ 5(l 

equipped, and reading alijr.St.Oted diagnostic·co4es that may 

be pfesent.. The vf!hiC-le shatl·_be deemed to hp;ve passed this 

test if. the cod_es. ob8erv-eQ . did nl)t exceed standards set for 

vehicles of that type nndel:. ~Ction 13B-26: 

P.A. 76-1586, ~ ·l&B-25, added-};ly .. P .A.-~33, § 15, eff. ,Jan. 

1~! ~994. ~~de~-~ P~ .. 90-4751.-§ 10! eff. Aug. 1~, 1997, 

5ilsn:...:ao. Waivef'S 

§ 13B-:-30. Waivers,-~. 

(a) The ·Agency Shall· certify that a vehicle .that has failed -a 

vehicle-emist~ion-retest-quaii:fies for-~ waiver of the emission 

inspection· standards if the following criteria are met: 

(1) --The vehicle-has received .all repairs and adjustments 

for which it is elig~-Ole under any emi."!Sion performance 

warranty provided under Section 207 of·the·federal Clean 

Air Act.l 

(2) The Agency determines by' nonnal inspecti.on procerlures that the vehicle's emission control-devices are.pr..esent-and appear .to,,be. properly ,conneeted_,anrl operating. 

(3),- Consistent-With .Title AO, Seetiou £1.360 of the· Code 

<lf Federal. Regulations, for vehicles -required to be i:.ested 

·under :thjs.rChapter, a ·minimum .expenditure .of at least 

.--$45Q, in. -emission-relate<l-:repa)rs ex.clusiv:~- of -ta:rn.pering-

-related-repairs.have been made. 

{4) Repairs for Vehicles ·of model yef.i.r,.l981 and later ere 

conducted' by a re~ognized·rep:rir-tedmician. 

(5~ ·Evidence of"repm:t 'iE presented.· consisting of either 

signed and dated receipts-identifying -the vehicle and de.~ 

scribing the work performed anrl -amount charged" for 

eligible emission-related repairs,. or an· .affidavit executed 

hy:·-tm,persOIJ, performing the eligible_ emission related 

repairs. 

(6) ·The repairs have resulted in an improvement in 

· vehicle emissions· as d-et.en:illned- by comparison· of bllt:ial 

and final-retest resu1ts. 

(b) The Agency ril.ay' ·issue ·an· emission -inspe.ctiOn certifi· 

cate to vehicles- failing -a transient. loaded mode emission 

retest if--a complete .-documented physical and-·funetional 

dia.gnosis·-and·-inspectiOn shows that no additional emissionrelated repairs are needed. This diagnostic inspection must 

be performed· by the Agency or its designated agent and 

shall be available only to motorists :whose vehicle .was re~ 

paired: by a ~cognized rep:rir technician. 

(c) The Agency may extend the emission inspection eertifieaUr expiration date"bY one year upon receipt of. a petition~ by 

the vehicle owner that needed repairs cinnot be made- due to 

economic hardship. Consistent with Title-40, Section 5L360 

of -the. ·Code of ·Federal Regulations, t.l"W extension may· be 

granted more than -once -during the l:ife of the vehtcle. 

··(d) The Agency·.shall propose procedures;· .. -pra.diees, :and 

performance requirements •for operation of vehicle scrappage 

programs cy,.any .person that w.ants· to· receive creditil for 

certain emissions··reduciions,from these-vehicles,- The--proposal shall include the method of vehicle selection, .testing. of 

vehicle emissions;, docnmentation, .. of annUill vehicle miles 

traveled, dt:Jtencination of emissions, and deternrination of 

emissions reductions. credits; Any ·appli~ble. guidance available from ·the United States· Environmental Protection Agency regarding-. these _programs shall also.:.be considered- by t;he 

Agency. -Within-180 days -after the Agency files this-proposal, the Board. shall adopt ru]_es 'for_, vehicle· _scrappage-,_program.s. -Subsection-.(b) af . ..Section 27-qf the· Ep.vironmental 

Protection Act_:z and the rulem.aking provisionB•Of,the.lllinois 

Administrative Procedure ActS _shall not," apply. _to rules 

adopted by the Board under thi.E·sub!lecti{ln (d). · 

(e) ,The Agency __ may, adopt pr-ocedures to purchase -vehicles for scrap that are· unable to meet emission inspection 

standards and for which motorists pr-ovide_ a sigp.ed estiinate 

from a. recognized repair technician that the cost- of-emisSionrelated repairs is expected to exceed an amount equal to onehalf of the current minlmum expenditure·requil'ed .in-item (3) 

of subsection (a) of thi.B Section. If the ~e_ncy ad~pts<such 

procedures,. they must be inc~uded in -the vehicle scr_appage 

programs ·11!. ·subsection· ·(d). '- SuCh· prOcedures· -shall:_' require 

the Agenc;y ·to :arrange for.--·private---sector funding for tbe 

purchase· --of at-least .90%' ·'of ':the: vehicles' which will "be 

purcil~~f~-·~a-p. · ·-. --: . _ .. _ . · ... ·. ·m :The' Agency ·may ·isslle·_-~ri:-enUssion' inSpection certifi'-

cate -for vehicles stibject to ·inspection under this' Chapter 

that are 'located and primarily-11Bed_ in-ali -area subject to the 

vehicle· emission inspection-·requirements of .,another --state. 

Emission_ inspection certificates .shall .be issued under this 

subsection only upon-receipt by_ the Agency of.eviden«! -that 

the vehicle has been inspected and is in compli.anee with the 

emissioll_ins_peCti-on requfre~ents IDid --standards applicabl~ in 

the state or-Iocal jurisdiction whttrB_.the vehicle is being used. 

P .A. 76--Ul86,_ § 13B--30, added bY P .A. 88-5S3, §'. 15, eff. Jan. 

18, 199'4-.'. Amended by_P.A.-9(1...;..475;.§--IO, eff. Aug.17, 1997. 

14.2 U.S.O.A. § .7&11-

. 24lti:ILCS Mrr . ..-, 

9. 5_ILCS 10011:...1 elseq, 

5/13B-.-% .. Inquiries 

_ § .13B--35. Inquiries.' ··-'J:'he. .. A:genc;r shall-develop a ·means 

of -respt;mdlng -to inqulries from. inspectors and- members of 

the public concerning the-program, includ~g (i) when inspections are required, (il) what kind of inspecti~s ~e--required, 

(ill) whether eJnisslon_ inspection stickers .or ~ificates previ-· 

ously requi:red for a vehicle have:been obtaliled, imd (iv) the 

procedures for resolving disputes conceriring inspecl:ions. 

P A -'76-1586, § lBB-35;-adde'd'by P.A.:--BB-533, § 15, e:Ef. Jan. 

18,1994. - ' ... '. -.. 

5}13B:-40.- Grievance procedure--

§ .lBB-40. Grievance ·prooodilre. ·Any· person,;aggrieved 

by a decision regarding the failure of an· emissions tesfOr'the 

denial-of a wal'ver .may file- a petition with the Agency -within 

80 days .. after the .de_cision .was .made, and the Agency-,sball 

thereupon investigate the matter ... Within 45 days_. after its 

receipt of the petition, :the AgeJlcy'_ ~baJ.l s~bmit to tbe 

petitioner and any affected inspector or station ·Jts written 

determination- of -the ca:rrect.ness or '.ineoiTectness ,of the 

decision eomplained of.--: Th-e ,written determination -shall 

include -&·st.:l.tement- of the fliets·re1ied .upon 2Ild the legal·:and 

technical issues ·decided .by the Agency'.in '.making its'deterIllinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page _ 1362 
----------~--··--- ~ -··--··--·----- ----- --~- -------- - ··----~-- ----- -----------·---- ·--- -- ----

625 lLCS 5!13B-40 VEHICLES 304 

mination, and may-also include an order directing the inspector_. (i) to issue -an- emission inspection.-·eertifi.mte -_for -the 

vehicle· effecti1/e on sucb-:date as the· Agency:may specify, {il) 

to reinspect the vehicle, (ill) to appl:y the- standards ·that the 

Agency -has -determined· to· be applicable;. or (iv:)-to' take any 

other action that the Agency deems ·:to be ·.appropriate. In 

conducting the .investigation, ·the Ageneyo .. rnay 1'equire- the 

petitioner to present· the vehicle fill":inspeeti..on -by-the Ageri.cy 

or -its designated ·agent· -The written detennlnation.·of·.the 

Agency shall' be subject"to review in- drcui-t-·Court 'in acCordance with the provisions Of the Admiiristra.fi.ve Review 

La:w,l "excepf-.that :nO- _challenge to the"·- 'Validity :Qf a· rule 

adopted by-th€ Board under-subsection (a)-of Section lSB..:zo 

shall be 'heard by-the cirt!uit court if the cha1lenge cotild have 

been raised :in a· timely ·petition ·for review under· ··section 

ISB-20. . 

p~-76-:-1586_,'·§ i3B~O, luJded b~ P .A.-88:-533, § 15, eff, Jan. 

!8, !994, . . . 

.. ~.736ILCS ~101 et:seq. 

5/13B-45- .··.Contracts 

'§ 18B45.· ·Contracts. 

(a) :The ~cy rn:~y enier.~to coritr~c~ with on~· o/~~re responsib_le ·partifs _to conatruct and op_erate official. in~pection stations, provide·and maintain approved test· .equipment, 

administer tests, certify results, issue emissiQn in.sp~tion 

stickers or certifica~, m$tain records, t.rafu .. P!:!I'Sonnel, or 

provlde information to t~ public oon_ceming. the pr~gram. 

These cOntracts (i) :shall be ·Bnbjecl:tc the,Illinois-:Purch:w~ 

ing Act,l.(ii).may be for a· term of up .to.9··years, (ili).shall:be 

ill writing,· and:.(iv)·shaTI· not··take.-eff>ect··until·a-·eopy of -the 

contract is filed with-the State Comptroller. 

(b))o 'pr~pliring itS piopo~Sls··:foi'·bid_dih.(by pote·ntiai contr-a <;tors,. the Agency shall.· endeavor .to. im;lude .. ProviSions 

relating t6 the following f~~: 

(1) The .demonstrated financial 'responsibility of,the potential contractor. · 

(2) Tbe spt'!cial:ized experience and techniCal 6;Jmpetence 

of the potential contraciQr in connection with'the ,type ·of 

services required and the complexity of the project: 

(3) The· potential· contractor's past· 'tecord Of performance ori contracts v.1th: the ·'Agency, .. ,with ·other· government agencies or public -bodies, and 'With private .industry, 

inclucling·such items as .cost;<quality -of -wor.k, .and abilityt.O meet schedules. ' · 

(4) .. ril~ c~PiicitY·. of the pOtentia( C~ntr·ador ·to perform 

the work witlriri the time limitationS. 

{5) The .fanriliari'cy_.of the.potent.ial.contractor with _the 

types of problems app!icable to the lJr-oject. 

(6) The potential contractor's proposed method to accomplish the work required including, where appropriate, 

any. demonstrated capability of ~loring· and developing 

innovative or advanced techniques and :methods: 

:(7) 'AvoidanCe of personal-and ·organizationaJ Conflicts of 

'interest prohibited under federal, State, ·Or local law. 

(8) The potential contractor's present ail.d prior involve· 

ment; in.~e c~~unity and~ the State of lllinois. 

Ee) Any eontraet.for -the .-cipernt:ion of. one. or .more official 

inspretion stations f;ball.include .a provision thB.tthe contractof sha1J not perform emisSion-related repairs ·or-adjustments 

to vehicles, other. , than to the contraetor~-s own vehicles, 

necessary .to enable·.vehlcles to pa8s Illinois emission-inspec--

tiolU!, 

P .A. 76-1586, § 13B-45, added bY P .A.. 88-:-533;·§ :ts; eff:Jail~. 

18,·1994. 

1,30 1LC8.-505/I ·et seq, 

5/!3B4i0. Costs 

§. 13~(( ·costs:· 

(a) .Exe.ept.as _nthetv4se-~ro~de~ .. in su~~.uon· (e).::"ar·~­ tion 13B-1.5, no 'fue shali be,,.ch~e·a·,to motoJ:". vep.icle. Ow:Iiers. 

for obtainiilg jns~t:i'onS,reqtli'ted: uno'er: ... tJilll Chapter, .. Th¢ 

Vehicle. InSpection. ·Fund .•. which~is 'aJu.ud ,created.m .. the State 

treasur,Y.fOr the _pin'pq~~-·· Of_;re~~j~lt ~rrio~eys frolll·the·.M~¥i FuB:l _Tax F:~d. _and. other .:sourees; ~}mlJ be 118€d,. suQ.ieci to 

appropriaf4.o"n;'for·the ·paYID~h.t:·of the· ·:co_StS· of ·tile ·progr2lll, 

including : reinlhursern ent of ·fib~.e ·:.agencies. ·of ~e. Stat.f!' that 

incru:·~expenses: in. the ' .. admlni;~tra,~ori _O(enforet:!Jnelli.:··i:if1be 

progl::am:_ . '['h~ ·Vebi~e · Inspe_cFilJTI~ ~d · sruill. ecintiliue _til existence ·notWitnst.anding:'the. t£pea1;of"Chajlt.e_r_).3A)· .Any 

money in the Vehicle"tn~peCtiOri_ funO on .. ·January_"1(1995; 

shaH_.be used ior flle·jm~a~iBe~ iorth,·_11J',tlfu;·· Chii~ter. 

·(b) The·Agen'cy nlay a:CqDirfl;~ o~ mai:ritlilir;Operrilk; s1m; 

lease and othe:rwise transfer real and pers.onaJ,prop,~rtY .. and 

interests in real and personal_propertY·\fOr the plii'pose.·of 

creatillg or operJLting inspection ·stations: and for·oariy· other 

purpose -relating-to·;the adnllniStration .. ofthia ... Chapter, .and 

may USe money·h-mn the Vehic}e.··Inspection,;Fund ·for these 

purposes, 

P .A. -76-;1586; § .. 13B_..,50, added by ,,P.A; :.88-J?:?S;, § 15,. eff .. Jan, 

18, 1994 .. 

1625 ILCS 5/laA.-101 ·et,eQ. 

6/13B--o5. -.Enforcement -

·§ :lB~;'· .·~nforcem~ut.o ·.:. 

(a)· The Agency EliRll coopei-at.e ·in thri· enforceineiit ·of tbia 

Chapter.'by (iFide'ntifying -probable violatiom;.-,.throUgh ·com-

})nt.er match:ing··ot-vehicle ·regiatrati.on•reoortbl. and .'inspection 

records; (ii) ·. sen:ding ... one : noticer.to .·.each· :suapeete_a .viblator 

identified .. throug'h' 1

silch matching, .-stating:·'that·=reglgtiation 

and .. inspection records indicate ~.that. .the vehicle· :owner·:has 

not ·complied· with·,this >Chapter; (ili)·=·directing.;-the wehicle 

owner to notify ·the-:1\geney.nr··the·-Becr-eta.ry,.of State if-he .or 

s~e·has ceased· to, -own. the .. vehicle.or.;has .changed.-.resiilenee; 

and (iv.) advising. the vehicle· owner of. the consequen~.s of ·r·· · 

violating this Chapter, · ' 

·.-The· Agency-shall ·.cooperate·with the Searetary· .. of. St.atJ,dn·~).'= 

the administration ·.of tliis Chapter" and· the related .. provisi-ons:i} of Chapter 3,1 and Bhall provide the Secretary of State-with.,·. 

such. UlfOl"IDf!.tion as the Secretary .of. Stat? ,may deem neces.: .. 

sacy·,for ,th~,purposes, ·inclUding -re;:gular:, ~d ;timely ·a.cce&s 

to vehiele·iru;pection recorde.- The Agency .. shall be relni.~·· 

bursed i'Qr. tbe.,!!9st,of.providing this dnformatioD::;·. '. , . ·· .'·,:"~ 

The -Secretary of State, shall. coopa:ate .. With. the Agency:;-irl 

the 'administration ·of· t'lris,~Chapt..er· ;and shall. provide '-.the 

Agency ,,wfth· such· :lnformatiotl as the: ·Agency· ma.y., deem 

neeeasary for the. purposes of this Chapter, including·re~~ 

and time.l;.v accessJ,o.:vehicle.registr.ation.:records .. ,:Section··_:2...; 

123 of,jJrig .Code ·.shall onot apply ·toe the provision of .:thh!.': 

information, but the Secretary of-State. shall be .. reimburaed 

for the cost of .providing the information. .... 

(b) ·The Seeretary·.of State ehall-suspend,eithet' the· dri~'n, privileges ·o.r the ,vehicle registration,· •or -hoth;·.of·.any·vehlcle 

oWner. who .;has 'not :~omplie1J ·with this Chapter,' ·if (i)\tlie 

vehicle· owner failed . ·to·','Sa:tiafaetorUy . respond to ·.the,, 

notice sent by the.Ageney under:sUbsedian (a), ancl'-(li},~•!\ 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (1/M) Program: Attachments Page - 1363 
305 VEHICLES 625 ILCS 5114-101 to 5/14-110 

Secretary of State has mailed the vehicle own-er a notice that 

the suspension will be imposed if the owner does not comply 

within a. stated period, and the Secretary of State has not 

received satisfactory evidence of compliance. within that period. The Secretary of State shall send this noi:J.-ce only after 

reCeiving a statement from the Agency that the vehicle 

owne:t has failed to comply with this Section. Notice sha1l be 

effective liB specified in subsection (c) of Section 6--211 of this 

Code. 

A suspenBion under thls subsection shall not be terminated 

until satisfactory proof of compliance has been submitted to 

the Secretary of State. No dnver's license or permit, or 

renewal N a license or permit, may ·be issueil to a person 

whose driving privileges have been suspended under this 

Section until the suspension has been t.errrrinated. No vehicle registration or registration plate thaL has been suspended 

under this Section may be reinstated or renewed, or transferred by the owner to any othet" vehicle, until the suspension 

bas been terminated .. 

The l'iling fee for an administrative hearing to contest a 

suspension made under this Section shall be $20, to be paid 

by the vehicle owner at the time written request for the 

hearing is made to the Secretary of Sta.te. 

The Secretary of State may promulgate roles to enable 

him. or her to carry out his or her duties under this Chapter. 

P .A. 76-UiBS, § 13B-00, added by P .A. 88-533., § Hi, eff. Jan. 

16, 1994. 

l62fi ILCS &a-:.10o.et seq. 

5/13B-60. Other offenses 

§ lBB-60. Other offenses. 

(a) Any person who knowingly displays an emission in~ 

spection sticker or exemption stieker on any vehicle other 

than the one for which the st.icker was lawfully issued in 

accordance with the provisions of thiB Chapter, or duplicates, 

alters, uses, :possesseB, issues, or distributes any emission 

inspection sticker, exemption sticker, inspection certificate, 

or facsimile thereof, except in accordance with the provisions 

oi this Chapter and the rclee. and regulations adopted her-eunder, is guilty of a Class C misdemeanor. 

(b) A vehicle owner shall pay a monetary fine equivalent to 

the test fee plus the applicable waiver repair expenditure for 

the continued operati.on of a nonoomplying vehicle beyond 4 

months past the expiration of t.he vehicle emission ins~tion 

certificate. July fines -collected under this Section shall be 

d1vided equally between the local jurisdiction issuing the 

citation and the Vehicle lnspection Fund. 

P .A. 76-1586, § 13~0, added by P.A. 88-J533, § 15, eff. Jen. 

18, 1994. 

5/13B-70. Legislative intent 

§ 13B-70. Legislative intent It is the intent of the 

Geiler.al Assembly that, to· the greatest BXtent pos~ible, there 

be continuity in the operation of the Vehicle Emissions 

Inspection Programs under this Chapter and Chapter 13A l 

during the transition phase when eertalll affected ~ounties 

become subject to the program under this Chapter inWad of 

the program under Chapter 13A. 

p .A. 76-168S, § 13B-70, added by P .A. 88-533, § 15, eff, Jan. 

IS, 1994. 

1625 ILCS 5/lSA-101 et aeq. 

5/13B-75. Home rule 

§ 13B-75. Home rule. Pursuant to subsections (h) and 

(i) of Section 6 of Artir;le VII of the lllinoia Constitution, the 

Repealed 

exercise by a home rule unit of any power which is inconsistent with this Chapter i£, hereby specifically denieO and 

preempted, and the vehicle emission inspection program 

created by this Chapter is hereby declared to be the subject 

of exclusive State jurisdiction. 

P .A. 7£-1586, § 13B-75, added by P .A. 88-533, § 15, eff. Jan. 

18, 1994. 

CHAPTER 14. VEHICLE EQffiPMENT 

SAFETY COMPACT 

5/14-101 to 5114-110. §§ 14-101 to 14-110. Re. 

pealed by P .A. 83-821, § 2, eff. Sept. 24, 

1983 

CHAPTER 15. SIZE, WEIGHT, 

AND LOAD PERMITS 

Section 

5/15-100. Repealed. 

ARTICLE !. SIZE, WEIGRT AND LOAD 

5/15-101. 

5115-102. 

5/15-103. 

5/15-104. 

5/15-105. 

5/10-106. 

5/16-107. 

5/15-107. 

Ji/15-108. 

5/15-109. 

5/1&-109.1. 

5/15-UO. 

5/15-111. 

5/15-112. 

5/15-113. 

5/15-113.1. 

6/15-113.2. 

5/15-113.3. 

5/15-114. 

5/15-115. 

Scope ancl effect of Chapter 16. 

Width of Vehicles. 

Height -of vehicles, 

Repealed. 

Prqject4!g loads .on p~senger vehicles. 

Protruding members of vehicle's. 

Length- of vehicles. 

Length of vehicles. 

Planking edge of a pavement. 

Spilling loads on highways prohlbited. 

Covers or tarpaulins required for cer..iin loads. 

.Towed vehicles. 

Wbeel and axle loads and gross weights. 

Officers to weigh vehicles and require removal 

of ~cess loads. 

Violations-Penalties. 

Violations-Sentence of permit moves. 

Vl.olations-Sent.ence of permit moves exceeding 

axle weights. 

Violations--Se1ltence of permit moves exceeding 

gross weight. 

Pushing of dis-abled vehicles. 

· Report-Operation of larger vehicles-Consumption of diesel fuel by first and second 

division vehicles. 

ARTICLE II. VEHICLES EXCEEDING 

WEIGHT LIMITS 

5/15-201. Vehicles exceeding prescnOed weight limits--

Preventing use of highway by. 

6115-202. Enforcement. 

5115-200. Records of violations. 

5/15-204 to 5/15-211. Repealed. 

511~01. 

5/1~02. 

5/1~03. 

5/1~03.1. 

6/1~04. 

5/1~05. 

ARTICLE JJI. PERMITS 

Penhlt.s for exceSI'i size and weight. 

Fees for special permit-s. 

Transmission fees, 

Repealed. 

Fees for hollile trailer combinations, or a unit 

carrying roof -or'fl.oor trusses. 

Fees for legal weight ·but over-dimen5ion vehicles, combinations, and loads, other than 

house trailer t:!)mbinations. 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1364 
Attachment 18 

Proposed Rule, Proposal for Public Comment 

Opinion and Order of Board by C.A. Manning 

dated August 24, 2000 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page- 1365 
Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1366 
ILLINOIS POLLUTION CONTROL BOARD 

August 24, 2000 

IN THE MATTER OF: ) 

) 

ENHANCED VEHICLE INSPECTION AND ) 

MAINTENANCE (VM) REGULATIONS: ) 

AMENDMENTS TO 35 ILL. ADM. CODE ) 

240 ) 

Proposed Rule. Proposal for Public Comment. 

ROI-12 

(Rulemaking - Air) 

OPINION AND ORDER OF THE BOARD (by C.A. Manning): 

On August 21, 2000, the illinois Environmental Protection Agency (Agency) filed a 

proposal to amend the Board's regulations on inspecting and maintaining vehicles to control air 

em1sswns. Today, the Board accepts the Agency's proposal for hearing. 

BACKGROUND 

Sections 182(b) and (c) of the federal Clean Air Act (CAA) (42 U.S.C §§ 75lla(b) and 

(c)) require states to implement vehicle "inspection and maintenance" (VM) programs in areas 

that do not meet National Ambient Air Quality Standards (NAAQS) for ozone or carbon 

monoxide. Areas that do not meet NAAQS are referred to as "nonattainment" areas. 

The CAA requires "basic" VM programs in "moderate" and "marginal" ozone 

nonattainment areas with existing VM programs. It requires "enhanced" VM programs in 

"serious," "severe," and "extreme" ozone nonattainment areas with a population of 200,000 or 

more. The CAA also requires states to submit, for the approval of the United States 

Environmental Protection Agency (USEP A), revisions to their State Implementation Plans (SIPs) 

that describe a satisfactory VM program and assure that the VM program will be implemented. 

In Illinois, two areas do not meet the NAAQS for ozone: (1) the Chicago metropolitan 

nonattainment area, which is a severe nonattainment area; and (2) the Metro-East St. Louis 

nonattainment area, which is a moderate nonattainment area. Under lllinois' Vehicle Emissions 

Inspection Law of 1995 (Vehicle Emissions Law (625 ILCS 5/13B-l et seq. (1998)), the Agency 

has proposed, and the Board has adopted, as amendments to 35 Ill. Adrn. Code 240, an enhanced 

VM program for these two nonattainment areas. See Enhanced Vehicle Inspection and 

Maintenance (VM) Regulations: Amendments to 35 Ill. Adrn. Code 240 (July 8, 1998), R98-24; 

(December 1, 1994), R94-20; (December I, 1994), R94-19. The Agency currently proposes to 

further amend the enhanced VM program. 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1367 
2 

DISCUSSION 

In this portion of the opinion, the Board (1) describes the Agency's proposal, (2) 

discusses the statutory framework governing this rulemaking, (3) describes how the Board will 

proceed with the Agency's proposal, and (4) rules on the Agency's motion to waive certain 

procedural requirements. 

Agency Proposal 

Under Section 13B-20(a) of the Vehicle Emissions Law (625 ILCS 5/13B-20(a) (1998)), 

the Agency proposes amendments to 35 Ill. Adm. Code 240 with respect to the enhanced 11M . 

program for the Chicago metropolitan and Metro-East St. Louis nonattainment areas. See 

Agency Statement of Reasons at 3-4. The Agency describes its proposed changes as follows: 

1. delaying the implementation of "pass/fail" on-board diagnostic testing from 

January 1, 2001, to January 1, 2002; 

2. retaining current, more lenient "start-up" hydrocarbon and carbon monoxide 

emission standards for model year 1981 through model year 1986 light duty 

vehicles, light duty trucks I, and light duty trucks 2; and 

3. adding several definitions, incorporating USEPA guidance by reference, 

eliminating outdated provisions, and clarifying certain provisions. See Agency 

Statement of Reasons at 3, 5-9, 11-13; Agency Summary of Testimony of 

· Elizabeth R. Tracy at I -2. 

The Agency describes these proposed changes as "relatively minor adjustments to the 

Enhanced I/M program." Agency Statement of Reasons at 5. The Agency states that it is 

proposing the amendments "to enable Illinois to meet federal and state mandated enhanced 

emissions testing requirements." Id at 3. The Agency also states that its proposal is "designed to 

promote the acceptance of and adherence to the enhanced I/M program, and to refine certain test 

requirements .... " Id at 5. 

Statutory Framework 

The Agency proposes to amend 35 IlL Adm. Code 240 pursuant to Section 13B-20(a) of 

the Vehicle Emissions Law (625 ILCS 5/13B-20(a) (1998)). Section 13B-20(a) provides in part: 

The Agency shall propose standards necessary to achieve reductions in the 

emission of hydrocarbons, carbon monoxide, and oxides of nitrogen from motor 

vehicles subject to inspection onder this Chapter. Within 120 days after the 

Agency proposes these standards, the Board shall adopt rules establishing 

standards for the emission of hydrocarbons, carbon monoxide, and oxides of 

nitrogen from motor vehicles subject to inspection under this Chapter. These 

rules may be amended from time to time pursuant to Agency proposals. 

*** 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 1368 
3 

[S]ubsection (b) of Section 27 of the Environmental Protection Actand the 

rulemaking provisions of the Illinois Administrative Procedure Act shall not apply 

to rules adopted by the Board under this subsection. 625 ILCS 5/13B-20(a) 

(1998). 

How the Board Will Proceed 

The Board accepts the Agency's proposal for hearing. Because Section 13B-20(a) of the 

Vehicle Emissions Law requires the Board to adopt rules within 120 days after it receives the 

Agency's proposal, the Board will, without commenting on the merits of the Agency's proposal, 

proceed by publishing this proposal in the Illinois Register as a proposal for public comment. 

The hearing officer assigned to this rulemaking will establish a deadline for filing public 

comments. 

Pursuant to Section 28 of the Environmental Protection Act (Act) (415 ILCS 5/28 

(1998)), the Board will hold at least two public hearings during this rulemaking. The Board will 

hold one hearing in Chicago and one hearing in the Metro-East St. Louis area. The hearing 

officer will establish specific locations and times for the hearings. After considering the issues 

raised at the public hearings and in public comments, the Board will issue a final opinion and 

order and publish the adopted rules in the Illinois Register. 

As set forth above, Section 13B-20(a) of the Vehicle Emissions Law states that Section 

27(b) of the Act (415 ILCS 5/27(b) (1998)) and the rulemaking provisions of the Administrative 

Procedure Act (5 ILCS 100/1-1 et seq.(1998)) "shall not apply to rules adopted by the Board 

under this subsection." 625 ILCS 5/13B-20(a) (1998). Accordingly, the Board will not request 

that the Department of Commerce and Community Affairs conduct an economic impact study of 

the proposed amendments pursuant to Section 27(b) of the Act. Nor will the Board submit the 

proposed amendments for first or second notice pursuant to Section 5-40 of the Administrative 

Procedure ACt (5 ILCS 100/5-40 (1998)). The Board will, however, hold public hearings and 

solicit public comment as described above. 

The Board directs the hearing officer to schedule public hearings pursuant to Section 28 

of the Act. Further, as noted above, the proposal will be published as a proposal for public 

comment in the Illinois Register. The Board also notes that bearing transcripts and the Board's 

opinions and orders in this rulemaking, including this opinion and order, will be available on the 

Board's Web site (www.ipcb.state.il.us). 

Agency Motion 

With its proposal, the Agency filed a motion to waive certain procedural requirements. 

Because the proposal is several hundred pages long, the Agency asks the Board to waive certain 

filing and service requirements of35 Ill. Adm. Code 102.120. See Agency Motion at 1-2. That 

section of the Board's procedural rules requires the Agency to file an original and nine copies of 

the proposal with tb<; Clerk, and to serve a copy of the proposal on the Attorney General and the 

Department of Natural Resources. 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (1/M) Program: Attachments Page- 1369 
4 

The Agency asks that the Board accept an original and five copies of the proposal, along 

with four partial copies of the proposal. The partial copies consist of pleadings and proposed 

rules, but not supporting exhibits. See Agency Motion at 2. The Agency also asks that it be 

allowed to serve only its Statement of Reasons and notice of the proposal on the Attorney 

General, and only notice of the proposal on the Department ofNatural Resources. The Agency 

states that representatives of the Attorney General and the Department of Natural Resources do 

not object to the motion. Id The Board grants the motion. 

ORDER 

The Board directs the Clerk to file the following proposed amendments to 35 lll. Adm. 

Code 240 with the Secretary of State to publish in the lllinois Register as a proposal for public 

comment. Proposed additions are underlined; proposed deletions are stricken. 

TITLE 35: ENVIRONMENTAL PROTECTION 

SUBTITLE B: AIR POLLUTION 

CHAPTER I: POLLUTION CONTROL BOARD 

SUBCHAPTER k: EMISSION STANDARDS AND LIMITATIONS FOR MOBILE SOURCES 

Section 

240.101 

240.102 

240.103 

240.104 

240.105 

240.106 

240.107 

Section 

240.121 

240.122. 

240.123 

240.124 

240.125 

PART 240 

MOBILE SOURCES 

SUBPART A: DEFINITIONS AND GENERAL PROVISIONS 

Preamble 

Definitions 

Prohibitions 

Inspection 

Penalties 

Determination of Violation 

Incorporations by Reference 

SUBPART B: EMISSIONS 

Smoke Emissions 

Diesel Engine Emissions Standards for Locomotives 

Liquid Petroleum Gas Fuel Systems 

Vehicle Exhaust Emission Standards 

Compliance Determination 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page- 1370 
5 

SUBPART C: HEAVY-DUTY DIESEL SMOKE OPACITY STANDARDS AND TEST 

PROCEDURES 

Section 

240.140 

240.141 

Applicability 

Heavy-Duty Diesel Vehicle Smoke Opacity Standards and Test Procedures 

SUBPART D: STEADY-STATE IDLE MODE TEST EMISSION STANDARDS 

Section 

240.151 

240.152 

240.153 

Applicability 

Steady-State Idle Mode Vehicle Exhaust Emission Standards 

Compliance Determination 

SUBPART E: TRANSIENT LOADED MODE TEST EMISSION STANDARDS 

Section 

240.161 

240.162 

240.163 

240.164 

240.165 

Section 

240.171 

240.172 

240.173 

Applicability 

Vehicle Exhaust Emission Start-Up Standards 

Vehicle Exhaust Emission Final Standards 

Vehicle Exhaust Emission Fast-Pass Standards 

Compliance Detennination 

SUBPARTF: EVAPORATIVE TEST STANDARDS 

Applicability 

Evaporative System Integrity Test Standards 

Evaporative System Purge Test Standards (Repealed) 

SUBPART G: ON-ROAD REMOTE SENSING TEST EMISSION STANDARDS 

240.181 

240.182 

240.183 

240.191 

240.192 

240.193 

Applicability 

On-Road Remote Sensing Emission Standards 

Compliance Determination 

SUBPART H: ON-BOARD DIAGNOSTIC TEST STANDARDS 

Applicability 

On-Board Diagnostic Test Standards 

Compliance Determination 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 13 71 
6 

240.Appendix A 

240.Appendix B 

Rule into Section Table 

Section into Rule Table 

240.Table A 

240.Table B 

240.Table C 

Vehicle Exhaust Emission Start-Up Standards 

Vehicle Exhaust Emission Final Standards 

Vehicle Exhaust Emission Fast-Pass Standards 

AUTHORITY: Implementing Sections 9, 10 and 13 and authorized by Section 27 aad 28.5 of the 

Environmental Protection Act [415 ILCS 5/9, 10, 13, and 27, aad 28.5] and Section 13B-20 of 

the Vehicle Emissions Inspection Law of 1995 [625 ILCS 5/13B-20]. (see Seetiee Hl efP.A. 99 

475, effeetive A-agust 16, 1997). 

SOURCE: Adopted as Chapter 2: Air Poiiution, Part VII: Mobile Sources, filed and effective 

April 14, 1972; codified at 7 III. Reg. 13628; amended in R85-25, at 10 III. Reg. 11277, 

effective June 16, 1986; amended in R90-20 at 16 Ill. Reg. 6184, effective April 7, I 992; 

amended in R94-20 at 18 Ill. Reg. 18013, effective December 12, 1994; amended in R94-19 at 

18 Ill. Reg. 18228, effective December 20, 1994; amended in R98-24 at 22 Ill. Reg. 13723, 

effective July 13, 1998; expedited correction at 22 III. Reg. 21120, effective July 13, 1998. 

BOARD NOTE: This part implements the Environmental Protection Act as ofJuly 1, 1994. 

NOTE: Capitalization denotes statutory language. 

SUBPART A: DEFINTIONS AND GENERAL PROVISIONS 

Section 240.102 Definitions 

Ail terms which appear in this Part have the definitions specified in this Part and 35 Ill. Adm. 

Code 20 I and 211. Where conflicting definitions occur, the defmitions of this Section apply in 

this Part. 

"Adjusted Loaded Vehicle Weight ("AL VW"l" means vehicle curb weight plus 

gross vehicle weight rating divided by two. 

"Agency'' means the IIIinois Environmental Protection Agency. 

"Diesel engine" means ail types of internal-combustion engines in which 

air is compressed to a temperature sufficiently high to ignite fuel injected 

directly into the cylinder area. 

"Diesel locomotive" means a diesel engine vehicle designed to move cars 

on a railway. 

"Evaporative system integrity test" means a test of a vehicle's evaporative 

system. The test shaii either consist of a leak check of a vehicle's fuel cap 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 13 72 
7 

with a fuel cap pressure decay tester (fuel cap pressure decay test), a fuel 

cap leak flow tester (fuel cap leak flow test), or a visual functional check, 

as applicable. 

"Fuel cap" means a device used to seal a vehicle's fuel inlet. 

"Fuel cap leak flow test" means a test which may be performed in 

accordance with this Part on a vehicle's fuel cap using a fuel cap leak flow 

tester to determine whether the vehicle complies with the evaporative 

system emission standards of this Part. 

"Fuel cap leak flow tester" means a device used to determine the leak flow 

integrity of a vehicle's fuel cap by comparing the measured leak flow of 

the fuel cap with an established fuel cap leak flow standard. 

"Fuel cap pressure decay test" means the test perfonned in accordance 

with this Part on a vehicle's fuel cap using a fuel cap pressure decay tester 

to determine whether the vehicle complies with the evaporative system 

emission standards of this Part. 

"Fuel cap pressure decay tester" means a device used to determine the 

pressure decay integrity of a vehicle's fuel cap by monitoring the pressure 

behind the fuel cap for a ten second period and comparing the measured 

pressure decay of the fuel cap to an established fuel cap pressure decay 

standard. 

"Fuel cap visual functional test" means the test performed in accordance 

with this Part on a vehicle's fuel cap using visual analysis to determine 

whether the vehicle complies with the evaporative system emission 

standards of this Part. 

"Full power position" means the throttle position at which the engine fuel 

delivery is at maximum flow. 

"Gross vehicle weight rating (GVWR)" means the value specified by the 

manufacturer as the maximum design loaded weight of a single vehicle. 

"Heavy duty vehicle" means any motor vehicle rated at more than 8500 

pounds GVWR or that has a vehicle curb weight of more than 6000 

pounds or that has a basic vehicle frontal area in excess of 45 square feet. 

"High idle" means a vehicle operating condition with engine disconnected 

from an external load (placed in either neutral or park) and operating at 

speed of 2500 ± 300 RPM. 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (I/M) Program: Attachments Page - 13 73 
8 

"Idle mode" means that portion of a vehicle emission test procedure 

conducted with the engine disconnected from an external load and 

operating at minimum throttle. 

"Initial idle mode" means the first of up to two idle mode sampling periods 

during a steady-state idle mode test, during which exhaust emission 

measurements are made with the vehicle in "as-received" condition. 

"Light duty truck I" means a motor vehicle rated at 6000 pounds 

maximum GVWR or less and which has a vehicle frontal area of 45 square 

feet or less, and which is designed primarily for purposes of transportation 

of property or is a derivation of such a vehicle, or is designed primarily for 

transportation of persons and has a capacity of more than 12 persons, or is 

available with special features enabling off-street or off-highway operation 

and use. 

"Light duty truck 2" means a motor vehicle rated between 6001 and 8500 

pounds maximum GVWR and which has a vehicle frontal area of 45 

square feet or less, and which is designed primarily for purposes of 

transportation of property or is a derivation of such a vehicle, or is 

designed primarily for transportation of persons and has a capacity of more 

than 12 persons, or is available with special features enabling off-street or 

off-highway operation and use. 

"Light duty vehicle" means a passenger car or passenger car derivative 

capable of seating 12 passengers or fewer. "Loaded mode" means that 

portion of a vehicle emission test procedure conducted with the vehicle 

positioned and operating under load on a chassis dynamometer. 

"Loaded mode" means that portion of a vehicle emission test procedure 

conducted with the vehicle positioned and operating under load on a 

chassis dynamometer. 

"Loaded vehicle weight (LVW)" means the vehicle curb weight plus 300 

pounds. 

"Measured values" means five se2ond running averages of exhaust 

emission concentrations sampled at a minimum rate of twice per second. 

"Model year" means the year of manufacture of a motor vehicle based 

upon the annual production period as designated by the manufacturer and 

indicated on the title and registration of the vehicle. If the manufacturer 

does not designate a production period for the vehicle, then "model year" 

means the calendar year of manufacture. 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (VM) Program: Attachments Page- 1374 
9 

"Motor vehicle" as used in this Part, shall have the same meaning as in 

Section 1-146 of the Illinois Vehicle Code [ 625 ILCS 5/1-146]. 

"Preconditioning mode" means a period of steady-state loaded mode or 

high-idle operation conducted to ensure that the engine and emissions 

control system components are operating at normal operating 

temperatures, thus minimizing false failures caused by improper or 

insufficient warm-up. 

"Second-chance idle mode" means the second of two idle mode sampling 

periods during a steady-state idle mode test, preceded by a preconditioning 

mode and utilized as a second chance to pass idle exhaust emission 

standards immediately following an initial idle mode failure. 

"Smokemeter or opacimeter" means an optical instrument designed to 

measure the opacity of smoke or diesel exhaust gases using the light 

extinction method. 

"Snap-idle cycle" means rapidly depressing the accelerator pedal from 

normal idle to the full power position while the vehicle is in neutral, 

holding the pedal in the position for no longer than ten seconds or until the 

engine reaches maximum RPM, and fully releasing the pedal so that the 

engine decelerates to normal idle. 

"Steady-state idle test" means a vehicle emission test procedure consisting 

of an initial idle mode measurement of exhaust emissions followed, if 

necessary, by a loaded or high idle preconditioning mode and a secondchance idle mode. 

"Transient loaded mode test" means a vehicle emissions test run on an 

inertial and power absorbing dynamometer using USEPA's IM240 driving 

cycle consisting of accelerations and decelerations simulating on-road 

driving conditions. 

"Vehicle curb weight" means the actual vehicle weight plus standard 

equipment and a full fuel tank. 

(Source: Amended at_ Ill. Reg. __ , effective ____ _) 

Section 240.104 Inspection 

a) All meter ve!Helss saajeet te iaspeetiea perseant te Seetiea 13A 1Q4 efthe 

Vehiele Bmissieas Iaspeetiea Law [625 ILCS 5/13A 1Q4] sha-ll eemply with the 

eJlhaust emissiea stam!!lfas fer eaffiea meneJdae ana hyareeaffiens set ferth at 

Seetiea 24().124 efthis P!lf!. 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (VM) Program: Attachments Page- 1375 
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All motor vehicles subject to inspection pursuant to Section 13B-15 of the 

Vehicle Emissions Inspection Law [ 625 ILCS 5/13B-15] shall comply with 

applicable vehicle emission standards contained in Sections 240.152,240.162, 

240.163, 240.172, 240.182 and 240.192 of this Part. 

(Source: Amended at_ Ill. Reg. __ , effective ____ ) 

Section 240.105 Penalties 

a) Any violations of Sections 240.103,240.121,240.122, and 240.123 of this Part 

sball be subject to the penalties as set forth in Section 42 of the Act [415 ILCS 

5/42]. 

b) l'.eyvislatisas sfSeetisas 249.194Ea) aad 249.124 sfteis Part shall ae sl!bjeetts 

the penalties as set feffh ia Seetieas 13A 112 aad 13A 113 sf tee Vehicle 

Emissisas Iaspeetisa Law [€i2S ILCS S/13A 112 aad 13A 113]. 

Any violations of Sections 240.104(b ), 240.152, 240.162, 240.163, 240.172, 

240.182, and 240.192 of this Part shall be subject to the penalties as set forth in 

Sections 13B-55 and 13B-60 of the Vehicle Emissions Inspection Law. 

(Source: Amended at_ Ill. Reg. __ , effective ____ ) 

Section 240.106 Determination of Violation 

a) Any violations of Sections 240.103, 240.121, 240.122, and 240.123 of this Part 

shall be determined by visual observation or by a test procedure employing an 

opacity measurement system as qualified by 35 Ill. Adm. Code 201, Subpart J. 

b) Any violations of Sections 249.124, 240.152, 240.162, 240.163, 240.172, 

240.182, or 240.192 of this Part shall be detennined in accordance with test 

procedures adopted by the Agency in 35 Ill. Adm. Code 276. 

(Source: Amended at_ Ill. Reg. __ , effective ____ ) 

Section 240.107 Incorporations by Reference 

The following materials are incorporated by reference and include no later editions or 

amendments: 

a) Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, 

PA 15096: Report J255a Diesel Engine Smoke Measurement (August 1978). 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (JIM) Program: Attachments Page- 1376 
II 

b) International Standards Organization (ISO), Case Postale 56, 1211 Geneve 20, 

Switzerland: ISO 393 (Working Draft, January 1991). Also available from 

American National Standards Institute (ANSI), II West 42nd Street, New York, 

NY 10036. 

c) United States Environmental Protection Agency (USEPA), "High-Tech 1/M Test 

Procedures, Emission Standards, Quality Control Requirements, and Equipment 

Specifications: IM240 and Functional Evaporative System Tests, Revised 

Technical Guidance," Report EPA-AA-RSPD-IM-96-1 (June 1996), 2565 

Plymouth Road, Ann Arbor, MI 48105. 

Ql United States Environmental Protection Agency (USEPA), Transportation and 

Regional Programs Division. Office of Transportation and Air Oualitv, "IM240 & 

Evap Technical Guidance," Report EPA420-R-00-007 (April 2000), 2565 

Plvmouth Road, Ann Arbor, MI 48105. 

(Source: Amended at_ Ill. Reg. __ , effective------' 

SUBPART B: EMISSIONS 

Section 240.124 Vehicle Exhaust Emission Standards (Repealed) 

a) BJlbaust emissioHs from light duty vsbielss sballllet elleeea tho following 

limitatiens: 

Model Year 

1988 1971 

1972 1974 

197§ 1977 

1978 1979 

.J-9&1} 

1981 aud later 

CarboH Monelliae Hyaroearbens as 

He~mHe 

(wua) 

e) BJcbaust emissiOHS frem light auty trueks, wbiee fer the fliHJlOSSS ef this 

sueseetion meaus a meter vehiele rated at 8()()() fleunds gress vel!iels weight or 

less Wl!ieh is assigned for earrying more than !() fleFSGnS or aesiguea for the 

trausfleFiatien offlFOfleFiy, freighter eargo, or is a derivative ef sueh a vehiele, 

shall net E!lleeea the following limitatiens: 

Meae!Year Carbon MoneJliae Hyareearbons as 

!ISJlaRe 

Illinois Ozone SIP Revision - Vehicle Emissions Inspection and Maintenance (liM) Program: Attachments Page - 13 77 
12 

t%1 (ppm) 

1968 1971 9.,() 900 

197;! 1974 &\) 1!00 

197§ 1978 +.-() 700 

1979 1989 Ml 600 

1981 1983 ;h() W9 

1984 a~~a1ater -1-d ;!;!() 

e) IlKhaHst emissieas frem heavy Effityvehis1es, whieh fer the plff!leses sf this 

slfhseetiea mea~~s a vehie1e with 8991pelfftas er greater ma!!Hfae!Hfer's mm,imlfm 

gress vehie1e weight rating (G\0 .VR), shall net "''eeea the fellewiflg limitatieas: 

Medel YoaF 

1968 1971 

1972 1978 

1979 1984 

19 8 § a~~Eilater 

CaFe sa Meae"iae 

(Source: Repealed at_ Ill. Reg. __ , effective ____ -J 

Section 240.125 Compliance Determination (Repealed) 

Hy<lfeeaFeeas as 

Hexane 

(ppm) 

+.wl) 

900 

700 

W9 

Fer plff!leses sf Eletefffliaiag sefftJ!lia~~ee with Seetiea ;!49.1;!4 sf this Part, all vehicles shall eo 

iaspeetoa while Sfleratiflg ia the idle meae, a~~a all 1981 a~~a later meael )'Oaf light .rnty vehieles 

a!!B light amy trneks (as aeiiaea ia SHeseetiea249.124(13) sf this Part) shall eo iflSfleetea at high 

isle <lmiag a twe speed idle test. 

(Source: Repealed at_ Ill. Reg. __ , effective ____ ) 

SUBPART E: TRANSIENT LOADED MODE TEST EMISSION STANDARDS 

Section 240.162 Vehicle Exhaust Emission Start-Up Standards 

Vehicle exhaust emission start-up standards contained in Section 240.Table A of this Part shall 

apply for all vehicles subject to inspection until two years after the beginning of!M240 testing. 

Subsequently, these standards shall continue to apply to all model year 1981 through model year 

1987 LDV, LDTI, and LDT2 vehicles. All standards are expressed in grams per mile (gpm). 

(Source: Amended at_ Ill. Reg. __ , effective ____ -J 

Section 240.163 Vehicle Exhaust Emission Final Standards 

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Vehicle exhaust emission final standards contained in Section 240.Table B of this Part shall 

apply for all vehicles subject to inspection beginning at the conclusion of testing using the startup vehicle exhaust emissions standards required in Section 240.162 except for model year 1981 

through model year 1987 LDV. LDTI. and LDT2 vehicles. which shall continue to use the 

standards contained in Section 240.Table A of this Part as described in Section 240.162. All 

standards are expressed in grams per mile (gpm). 

(Source: Amended at_ Ill. Reg. __ , effective ____ ) 

Section 240.164 Vehicle Exhaust Emission Fast-Pass Standards 

Vehicle exhaust emissions fast-pass standards contained in Section 240.Table C of this Part will 

apply for all vehicles subject to inspection under Section 240.16 I of this Part utilizing the IM240 

transient loaded mode exhaust emission test procedures that have been will-bs adopted by the 

Agency in 35 Ill. Adm. Code 276. All standards are expressed as the cumulative grams for each 

second of the composite and Phase 2 tests. 

(Source: Amended at_ Ill. Reg. __ ,effective-----' 

Section 240.165 Compliance Determination 

a) Vehicle Exhaust Emission Start-Up and Final Standards- Compliance shall be 

determined based upon the measurement of exhaust emissions while operating the 

vehicle on a dynamometer and following the driving cycle as specified for the 

transient IM240 test procedures adopted by the Agency. If the corrected, 

composite emission rates exceed standards for any pollutant, additional analysis of 

test results shall review the second phase ("Phase 2") of the driving cycle 

separately. Phase 2 shall include second 94 through second 239 of the driving 

cycle. Second-by-second emission rates in grams and composite emission rates in 

grams per mile for Phase 2 and for the entire composite test shall be recorded for 

each pollutant. For any given pollutant, if the composite emission level is at or 

below the composite standard or if the Phase 2 grams per mile emission level is at 

or below the applicable Phase 2 standard, then the vehicle shall pass the test for 

that pollutant. Composite and Phase 2 emission rates shall be calculated in 

accordance with procedures specified in "High-Tech I/M Procedures, Emissions 

Standards, Quality Control Requirements, and Equipment Specifications: IM240 

and Functional Evaporative System Tests, Revised Technical Guidance," 

incorporated by reference at Section 240.107(c) 210.107 of this Part. 

b) Vehicle Exhaust Emission Fast-Pass Standards- Compliance will be determined 

based upon the measurement of exhaust emissions while operating the vehicle on 

a dynamometer and following the driving cycle as specified for the transient 

IM240 test procedures adopted by the Agency. Vehicles will be fast-passed using 

the following algorithm: 

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14 

I) Beginning at second 30 of the driving cycle, cumulative second-by-second 

emission levels for each second, calculated from the start of the cycle in 

grams, will be compared to the cumulative fast-pass emission standards 

for the second under consideration. Beginning at second 109, fast-pass 

decisions are based upon analysis of cumulative emissions in Phase 2, the 

portion of the test beginning at second 94, as well as emission levels 

accumulated from the beginning of the composite test. 

2) A vehicle will pass the transient IM240 test for a given pollutant if either 

of the following conditions occurs: 

A) cumulative emissions of the pollutant are below the full cycle fastpass standard for the second under consideration; or 

B) at second 109 and later, cumulative Phase 2 emissions are below 

the Phase 2 fast-pass standards for the second under consideration. 

3) Testing may be terminated when fast-pass criteria are met for all subject 

pollutants in the same second. 

4) If a fast-pass determination cannot be made for all subject pollutants 

before the driving cycle ends, the pass/fail determination for each 

component will be based on composite or Phase 2 emissions over the full 

driving cycle according to the procedures in subsection (a) of this Section. 

In cases where fast-pass standards are not used, composite emission rates 

in grams per mile for Phase 2 and for the entire composite test will be 

recorded for each pollutant. 

5) Composite and Phase 2 emission rates will he calculated in accordance 

with procedures specified in "High-Tech liM Procedures, Emissions 

Standards, Quality Control Requirements, and Equipment Specifications: 

IM240 and Functional Evaporative System Tests, Revised Technical 

Guidance" incorporated by reference at Section 240.107(c) 24Q.IQ7 of this 

Part. 

(Source: Amended at_ Ill. Reg. __ , effective ____ ) 

SUBPART H: ON-BOARD DIAGNOSTIC TEST STANDARDS 

Section 240.191 Applicability 

The standards of this Subpart apply to all 1996 and newer model year light duty vehicles, light 

duty trucks 1, and light duty trucks 2 that are required to meet the standards contained in 40 

C.P.R. § 86.094-17 and which are inspected utilizing the on-board diagnostic test procedures that 

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15 

will be adopted by the Agency in 35 Ill. Adm. Code 276. Vehicles that receive a result of fail do 

not thereby fail their emissions test until January I, 2002 :WW.. 

(Source: Amended at~ Ill. Reg. ~~• effective~~~~.) 

Section 240.TABLE A Vehicle Exhaust Emission Start-Up Standards 

Light Duty Vehicles: 

Model Years Hydrocar]:,ons 

Composite Phase 2 

(gpm) (gpm) 

1996+ 0.80 0.50 

1991-1995 1.20 0.75 

1983-1990 2.00 1.25 

1981-1982 2.00 1.25 

Light Duty Trucks I: 

Model Years Hydrocarbons 

1996+ 

(:S 3750 

LVW) 

(> 3750 

LVW) 

1991-1995 

1988-1990 

1984-1987 

1981-1983 

Composite 

(gpm) 

0.80 

1.00 

2.40 

3.20 

3.20 

7.50 

Light Duty Trucks 2: 

Phase 2 

(gpm) 

0.50 

0.63 

!.50 

2.00 

2.00 

5.00 

Model Years Hydrocarbons 

Composite Phase 2 

(gpm) (gpm) 

Carbon Monoxide 

Composite Phase 2 

(gpm) (gpm) 

15.0 12.0 

20.0 16.0 

30.0 24.0 

60.0 48.0 

Carbon Monoxide 

Composite 

(gpm) 

15.0 

20.0 

60.0 

80.0 

80.0 

100.0 

Phase 2 

(gpm) 

12.0 

16.0 

48.0 

64.0 

64.0 

80.0 

Carbon Monoxide 

Composite Phase 2 

(gpm) (gpm) 

Oxides of Nitrogen 

Composite Phase 2 

(gpm) (gpm) 

2.0 Reserved 

2.5 Reserved 

3.0 Reserved 

3.0 Reserved 

Oxides of Nitrogen 

Composite 

(gpm) 

2.0 

2.5 

3.0 

3.5 

7.0 

7.0 

Phase 2 

(gpm) 

Reserved 

Reserved 

Reserved 

Reserved 

Reserved 

Reserved 

Oxides of Nitrogen 

Composite Phase 2 

(gpm) (gpm) 

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1996+ 

(:':: 5750 1.00 0.63 20.0 16.0 2.5 Reserved 

ALVW) 

(> 5750 2.40 1.50 60.0 48.0 4.0 Reserved 

ALVW) 

1991-1995 2.40 1.50 60.0 48.0 4.5 Reserved 

1988-1990 3.20 2.00 80.0 64.0 5.0 Reserved 

1984-1987 3.20 2.00 80.0 64.0 7.0 Reserved 

1981-1983 7.50 5.00 100.0 80.0 7.0 Reserved 

(Source: Amended at_ Ill. Reg. __ , effective 

Section 240. TABLE B Vehicle Exhaust Emission Final Standards 

Light Duty Vehicles: 

Model Years Hydrocarbons Carbon Monoxide Oxides of Nitrogen 

Composite Phase 2 Composite Phase 2 Composite Phase 2 

(gpm) (gpm) (gpm) (gpm) (gpm) (gpm) 

1996+ 0.60 0.40 10.0 8.0 1.5 Reserved 

1983.-1995 0.80 0.50 15.0 12.0 2.0 Reserved 

1981-1982 0.80 0.50 30.0 24.0 2.0 Reserved 

Light Duty Trucks I: 

Model Years Hydrocarbons Carbon Monoxide Oxides of Nitrogen 

Composite Phase 2 Composite Phase 2 Composite Phase 2 

(gpm) (gpm) (gpm) (gpm) (gpm) (gpm) 

1996+ 

(:':: 3750 0.60 0.40 10.0 8.0 1.5 Reserved 

LVW) 

(> 3750 0.80 0.50 13.0 10.0 1.8 Reserved 

LVW) 

1988-1995 1.60 1.00 40.0 32.0 2.5 Reserved 

1984-1987 1.60 1.00 40.0 32.0 4.5 Reserved 

1981-1983 3.40 2.00 70.0 56.0 4.5 Reserved 

Light Duty Trucks 2: 

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Model Years Hydrocarbons Carbon Monoxide Oxides ofNitrogen 

Composite Phase 2 Composite Phase 2 Composite Phase 2 

(gpm) (gpm) (gpm) (gpm) (gpm) (gpm) 

1996+ 

(::;_5750 0.80 0.50 13.0 10.0 1.8 Reserved 

ALVW) 

(> 5750 0.80 0.50 15.0 12.0 2.0 Reserved 

ALVW) 

1988-1995 1.60 1.00 40.0 32.0 3.5 Reserved 

1984-1987 1.60 1.00 40.0 32.0 4.5 Reserved 

1981-1983 3.40 2.00 70.0 56.0 4.5 Reserved 

(Source: Amended at_ Ill. Reg. __ , effective ) 

Section 240.TABLE C Vehicle Exhaust Emission Fast-Pass Standards 

a) Vehicles having composite hydrocarbon emission limitations of less than 1.25 grams per 

mile, in Section 240.TABLE A or Section 240.TABLE B, shall use the hydrocarbon fastnass standards contained in this subnart. Vehicles having <md composite carbon 

monoxide emission limitations of less than 20.0 grams per mile, in Section 240.TABLE 

A or Section 240.TABLE B, shall use the carbon monoxide fast-nass standards contained 

in this subnart. 

Hydrocarbons Carbon Monoxide 

Second Composite Phase 2 Composite Phase 2 

30 0.124 NIA 0.693 N/A 

31 0.126 N/A 0.773 N/A 

32 0.129 N/A 0.837 N/A 

33 0.135 N!A 0.851 NIA 

34 0.140 N/A 0.853 N/A 

35 0.146 N/A 0.857 N/A 

36 0.150 N/A 0.900 N/A 

37 0.153 N/A 0.960 N/A 

38 0.156 N/A 1.034 NIA 

39 0.160 N/A 1.070 N/A 

40 0.165 N/A 1.076 N/A 

41 0.169 N/A 1.083 N/A 

42 0.172 N/A 1.102 N/A 

43 0.173 N/A 1.111 N/A 

44 0.177 N/A 1.114 N/A 

45 0.197 N/A 1.157 N/A 

46 0.200 N/A 1.344 N/A 

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47 0.208 N/A 1.482 N/A 

48 0.221 N/A 1.530 N/A 

49 0.232 N/A 1.542 N/A 

50 0.235 N/A 1.553 N/A 

51 0.238 N/A 1.571 N/A 

52 0.240 N/A 1.595 N/A 

53 0.242 N/A 1.633 N/A 

54 0.246 N/A 1.685 NIA 

55 0.249 N/A 1.689 N/A 

56 0.252 N/A 1.693 N/A 

57 0.261 N!A 1.700 N/A 

58 0.271 N/A 1.723 N/A 

59 0.276 N/A 1.852 N/A 

60 0.278 N/A 1.872 N/A 

61 0.280 N/A 1.872 N/A 

62 0.282 N/A 1.872 N!A 

63 0.283 N/A 1.900 N/A 

64 0.284 N/A 1.917 N/A 

65 0.285 N/A 1.944 N/A 

66 0.286 N/A 2.000 N/A 

67 0.288 N/A 2.060 N/A 

68 0.291 N/A 2.064 N/A 

69 0.294 N/A 2.076 NIA 

70 0.296 N/A 2.104 N/A 

71 0.298 N/A 2.117 N/A 

72 0.300 N/A 2.125 N!A 

73 0.302 N/A 2.130 N/A 

74 0.304 N/A 2.138 N/A 

75 0.307 N/A 2.152 N/A 

76 0.308 N/A 2.170 N/A 

77 0.308 N/A 2.188 N/A 

78 0.308 N/A 2.200 N/A 

79 0.314 N/A 2.212 N/A 

80 0.320 N!A 2.212 N/A 

81 0.324 N!A 2.221 N/A 

82 0.327 N/A 2.222 N/A 

83 0.329 N/A 2.227 N/A 

84 0.333 N/A 2.236 N/A 

85 0.336 N/A 2.243 N/A 

86 0.339 N/A 2.262 N/A 

87 0.343 N/A 2.271 N/A 

88 0.347 N/A 2.284 N/A 

89 0.350 N/A 2.299 N/A 

90 0.356 N/A 2.308 N/A 

91 0.358 N/A 2.326 N/A 

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92 0.360 N/A 2.330 N/A 

93 0.363 N/A 2.331 N/A 

94 0.367 N/A 2.344 N/A 

95 0.370 N/A 2.347 N/A 

96 0.372 N/A 2.355 N/A 

97 0.376 N/A 2.395 N/A 

98 0.388 N/A 2.451 N/A 

99 0.396 N/A 2.508 NIA 

100 0.405 N/A 2.590 N/A 

101 0.410 N/A 2.660 N/A 

102 0.411 N/A 2.749 N/A 

103 0.412 N/A 2.913 N/A 

104 0.413 N/A 3.162 N/A 

105 0.421 N/A 3.170 N/A 

106 0.428 N/A 3.197 NIA 

107 0.430 N/A 3.288 N/A 

108 0.455 N/A 3.419 N/A 

109 0.459 0.015 3.587 0.168 

110 0.462 0.017 3.595 0.173 

Ill 0.464 0.021 3.640 0.237 

112 0.466 0.024 3.740 0.266 

113 0.468 0.024 3.868 0.280 

114 0.471 O.D25 3.877 0.291 

115 0.488 0.026. 3.934 0.314 

116 0.513 0.029 4.015 0.331 

117 0.538 0.032 4.061 0.345 

118 0.561 0.035 4.063 0.350 

119 0.577 O.D35 4.079 0.356 

120 0.580 0.036 4.140 0.367 

121 0.586 0.038 4.185 0.388 

122 0.594 0.040 4.199 0.407 

123 0.603 0.041 4.205 0.463 

124 0.610 0.042 4.212 0.480 

125 0.615 0.042 4.232 0.506 

126 0.624 0.042 4.298 0.518 

127 0.628 0.045 4.344 0.522 

128 0.632 0.046 4.361 0.525 

129 0.637 0.046 4.366 0.528 

130 0.641 0.049 4.369 0.530 

131 0.643 0.050 4.372 0.530 

132 0.644 0.052 4.435 0.534 

133 0.645 0.054 4.523 0.550 

134 0.647 0.054 4.524 0.554 

135 0.651 0.054 4.525 0.590 

136 0.658 0.055 4.531 0.616 

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137 0.663 0.055 4.534 0.639 

138 0.666 0.056 4.542 0.653 

139 0.668 0.059 4.553 0.662 

140 0.670 0.061 4.554 0.683 

141 0.672 0.061 4.554 0.696 

142 0.675 0.061 4.554 0.708 

143 0.678 0.063 4.554 0.721 

144 0.681 0.064 4.554 0.739 

145 0.684 0.065 4.554 0.742 

146 0.686 0.066 4.554 0.743 

147 0.688 0.067 4.554 0.745 

148 0.690 0.068 4.554 0.748 

149 0.692 0.069 4.554 0.751 

150 0.694 0.070 4.554 0.762 

151 0.696 0.071 4.556 0.789 

152 0.698 0.072 4.556 0.790 

153 0.700 0.073 4.565 0.794 

154 0.702 0.073 4.612 0.799 

155 0.704 0.074 4.834 0.805 

156 0.706 0.077 5.702 0.842 

157 0.708 0.079 5.841 0.990 

158 0.710 0.082 6.170 1.038 

159 0.712 0.082 6.670 1.357 

160 0.716 0.086 7.425 1.455 

161 0.750 0.095 8.379 1.546 

162 0.784 0.107 9.648 1.824 

163 0.805 0.115 10.918 2.746 

164 0.840 0.122 12.157 3.073 

165 0.853 0.127 12.731 3.633 

166 0.874 0.159 12.831 4.505 

167 0.903 0.186 12.892 4.952 

168 0.910 0.189 12.932 5.254 

169 0.914 0.200 13.702 5.730 

170 0.916 0.220 14.139 6.051 

171 0.919 0.236 14.964 6.333 

172 0.931 0.247 15.704 6.490 

173 0.948 0.257 16.253 6.796 

174 0.983 0.267 16.907 7.205 

175 1.018 0.283 17.655 8.151 

176 1.027 0.295 18.020 8.230 

177 1.035 0.312 18.349 8.584 

178 1.051 0.318 18.671 8.800 

179 1.074 0.323 18.972 8.847 

180 1.084 0.337 19.228 8.913 

181 1.099 0.345 20.123 9.122 

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182 1.121 0.350 20.405 9.532 

183 1.132 0.359 20.754 10.256 

184 1.152 0.387 21.684 10.862 

185 1.161 0.398 21.955 10.996 

186 1.168 0.400 22.650 11.206 

187 1.175 0.402 22.989 11.514 

188 1.181 0.405 23.535 11.894 

189 1.188 0.418 23.876 12.019 

190 1.203 0.429 24.018 12.170 

191 1.219 0.442 24.464 12.517 

192 1.233 0.457 24.685 12.598 

193 1.251 0.473 24.931 12.625 

194 1.255 0.487 25.188 12.653 

195 1.258 0.501 25.468 12.777 

196 1.265 0.510 25.627 12.906 

197 1.280 0.512 25.746 12.989 

198 1.293 0.514 25.850 13.060 

199 1.301 0.516 25.974 13.165 

200 1.313 0.518 26.141 13.242 

201 1.324 0.527 26.225 13.412 

202 1.332 0.540 26.338 13.662 

203 1.341 0.547 26.547 13.773 

204 1.357 0.553 26.818 13.942 

205 1.375 0.559 27.052 14.090 

206 1.392 0.563 27.393 14.224 

207 1.408 0.567 27.501 14.426 

208 1.422 0.571 27.632 14.498 

209 1.433 0.575 27.803 14.776 

210 1.443 0.579 27.953 14.907 

211 1.453 0.595 28.205 14.916 

212 1.463 0.605 28.543 15.014 

213 1.468 0.614 28.997 15.221 

214 1.470 0.622 29.000 15.472 

215 1.474 0.627 29.005 15.555 

216 1.478 0.638 29.081 15.652 

217 1.481 0.643 29.281 15.969 

218 1.484 0.643 29.483 16.028 

219 1.487 0.645 29.734 16.375 

220 1.490 0.651 29.803 16.487 

221 1.493 0.655 29.821 16.524 

222 1.504 0.663 29.847 16.578 

223 1.522 0.671 29.862 16.684 

224 1.547 0.675 29.873 16.755 

225 1.549 0.684 30.008 16.770 

226 1.562 0.694 30.126 16.805 

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227 1.574 0.701 30.127 16.865 

228 1.579 0.702 30.127 16.960 

229 1.584 0.708 30.208 16.960 

230 1.589 0.708 30.314 16.962 

231 1.590 0.709 30.323 16.988 

232 1.596 0.710 30.325 17.072 

233 1.598 0.710 30.368 17.094 

234 1.604 0.711 30.411 17.184 

235 1.610 0.712 30.416 17.187 

236 1.612 0.712 30.428 17.188 

237 1.613 0.712 30.430 17.189 

238 1.614 0.713 30.452 17.241 

239 1.615 0.716 30.488 17.370 

b) Vehicles having composite hydrocarbon emission limitations of at least 1.25 grams per 

mile but less than 2.00 grams per mile, in Section 240.TABLE A or Section 240.TABLE 

B, shall use the hydrocarbon fast-12ass standards contained in this sub]2art. Vehicles 

having aHd composite carbon monoxide emission limitations of at least 20.0 grams per 

mile but less than 30.0 grams per mile, in Section 240.TABLE A or Section 240.TABLE 

B, shall use the carbon monoxide fast-12ass standards contained in this sub]2art. 

Hydrocarbons Carbon Monoxide 

Second Composite Phase 2 Composite Phase 2 

30 0.247 N/A 1.502 N/A 

31 0.253 N/A 1.546 N/A 

32 0.258 N/A 1.568 N/A 

33 0.263 N/A 1.582 N/A 

34 0.268 N/A 1.593 N/A 

35 0.277 N/A 1.602 N/A 

36 0.283 N/A 1.621 N/A 

37 0.293 N/A 1.631 N/A 

38 0.297 N/A 1.702 N/A 

39 0.298 N/A 1.784 N/A 

40 0.313 N/A 1.879 N/A 

41 0.320 N/A 2.162 N/A 

42 0.327 N/A 2.307 ]\)/A 

43 0.342 N/A 2.343 N/A 

44 0.360 N/A 2.376. N/A 

45 0.376 N/A 2.406 N/A 

46 0.389 N/A 2.433 N/A 

47 0.408 N/A 2.458 N/A 

48 0.423 N/A 2.483 N/A 

49 0.434 N/A 2.774 N/A 

50 0.444 N/A 2.844 N!A 

51 0.454 N/A 2.900 N/A 

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52 0.465 N/A 2.936 N/A 

53 0.472 N/A 3.133 N/A 

54 0.478 N/A 3.304 N/A 

55 0.485 N/A 3.407 N/A 

56 0.493 N/A 3.456 N/A 

57 0.500 N/A 3.480 N/A 

58 0.505 N/A 3.518 N/A 

59 0.514 N/A 3.560 N/A 

60 0.537 N/A 3.593 N/A 

61 0.540 N/A 3.628 N/A 

62 0.543 N/A 3.641 N/A 

63 0.546 N/A 3.655 N/A 

64 0.551 N/A 3.680 N/A 

65 0.559 N/A 3.700 N/A 

66 0.567 N/A 3.728 N/A 

67 0.575 N/A 3.857 N/A 

68 0.588 N/A 3.894 N/A 

69 0.595 N/A 3.943 N/A 

70 0.601 N/A 3.983 N/A 

71 0.606 N/A 4.009 N/A 

72 0.610 N/A 4.023 N/A 

73 0.617 N/A 4.023 N/A 

74 0.631 N/A 4.053 N/A 

75 0.643 N/A 4.063 N/A 

76 0.651 N/A 4.077 N/A 

77 0.659 N/A 4.225 N/A 

78 0.667 N/A 4.243 N/A 

79 0.676 N/A 4.260 N/A 

80 0.681 N/A 4.282 N/A 

81 0.685 N/A 4.322 N/A 

82 0.689 N/A 4.398 N/A 

83 0.694 N/A 4.482 N/A 

84 0.700 N/A 4.515 N/A 

85 0.705 N/A 4.518 N/A 

86 0.709 N/A 4.520 N/A 

87 0.713 N/A 4.522 N/A 

88 0.717 N/A 4.522 N/A 

89 0.721 N/A 4.523 N/A 

90 0.724 N/A 4.526 N/A 

91 0.727 N/A 4.527 N/A 

92 0.729 N/A 4.527 N/A 

93 0.731 N/A 4.528 N/A 

94 0.734 N/A 4.528 N/A 

95 0.740 N/A 4.528 N/A 

96 0.748 N/A 4.529 N/A 

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97 0.759 N/A 4.575 N/A 

98 0.771 N/A 4.703 N/A 

99 0.783 N!A 4.805 N/A 

100 0.793 N/A 4.886 NIA 

101 0.810 N/A 4.957 N/A 

102 0.823 NIA 5.104 NIA 

103 0.836 NIA 5.340 NIA 

104 0.853 NIA 5.496 N/A 

105 0.871 N/A 5.625 N/A 

106 0.887 N/A 5.815 N!A 

107 0.899 NIA 6.473 N/A 

108 0.931 NIA 7.037 N/A 

109 0.947 0.040 7.419 0.246 

110 0.957 0.047 7.643 0.257 

Ill 0.965 0.052 7.759 0.286 

112 0.971 0.056 7.824 0.379 

113 0.977 0.061 7.889 0.425 

114 0.983 0.064 7.960 0.457 

115 1.003 0.072 8.024 0.477 

116 1.030 0.081 8.076 0.494 

117 1.041 0.082 8.111 0.504 

118 1.050 0.083 8.130 0.512 

119 1.052 0.092 8.148 0.519 

120 1.055 0.094 8.211 0.529 

121 1.061 0.097 8.478 0.529 

122 1.071 0.100 8.548 0.530 

123 1.081 0.103 8.561 0.531 

124 1.091 0.106 8.568 0.532 

125 1.102 0.108 8.572 0.533 

126 1.110 0.110 8.584 0.548 

127 1.116 0.112 8.592 0.610 

128 1.121 0.114 8.596 0.614 

129 1.125 0.116 8.597 0.622 

130 1.128 0.118 8.601 0.631 

131 1.130 0.120 8.605 0.640 

132 1.132 0.122 8.608 0.646 

133 1.134 0.123 8.626 0.650 

134 1.135 0.124 8.650 0.652 

135 1.143 0.127 8.660 0.738 

136 1.147 0.130 8.767 0.754 

137 1.156 0.134 9.029 0.780 

138 1.163 0.139 9.238 0.795 

139 1.186 0.146 9.389 0.804 

140 1.253 0.149 9.493 0.810 

141 1.262 0.151 9.583 0.815 

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142 1.271 0.153 9.626 0.818 

143 1.277 0.155 9.669 0.821 

144 1.283 0.157 9.716 0.825 

145 1.291 0.162 9.763 0.840 

146 1.294 0.164 9.809 0.847 

147 1.296 0.166 9.852 0.855 

148 1.298 0.168 9.885 0.865 

149 1.303 0.169 9.932 0.874 

150 1.316 0.170 9.986 0.891 

151 1.330 0.171 10.039 0.914 

152 1.342 0.172 10.072 0.929 

153 1.348 0.173 10.090 0.937 

154 1.353 0.175 10.105 0.942 

155 1.362 0.178 10.146 0.949 

156 1.365 0.180 10.245 1.375 

157 1.3ti6 0.189 10.397 1.576 

158 1.373 0.198 10.923 1.943 

159 1.397 0.203 11.970 2.820 

160 1.422 0.207 13.421 3.281 

161 1.440 0.214 15.289 3.483 

162 1.452 0.221 15.912 3.620 

163 1.465 0.229 16.530 4.168 

164 1.509 0.247 17.622 4.338 

165 1.533 0.274 18.366 4.682 

166 1.555 0.309 19.869 5.633 

167 1.576 0.318 20.711 6.137 

168 1.598 0.322 22.319 6.853 

169 1.618 0.333 23.751 7.136 

170 1.636 0.343 24.842 7.320 

171 1.666 0.356 25.410 7.685 

172 1.685 0.385 25.798 8.052 

173 1.726 0.409 26.122 8.344 

174 1.742 0.433 26.353 8.602 

175 1.756 0.453 26.638 8.898 

176 1.769 0.463 27.219 9.251 

177 1.784 0.507 27.279 10.253 

178 1.802 0.523 27.320 10.828 

179 1.822 0.528 27.352 10.933 

180 1.843 0.541 27.822 11.060 

181 1.864 0.549 28.763 11.188 

182 1.884 0.559 29.402 11.345 

183 1.896 0.571 29.971 11.733 

184 1.915 0.584 30.276 12.598 

185 1.940 0.598 30.988 12.953 

186 1.958 0.613 31.095 13.213 

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187 1.972 0.624 31.314 14.131 

188 1.985 0.629 31.833 14.839 

189 1.991 0.629 32.239 15.137 

190 1.993 0.638 32.547 15.138 

191 1.995 0.648 32.855 15.141 

192 2.001 0.659 33.153 15.595 

193 2.015 0.663 33.444 15.658 

194 2.031 0.671 33.482 15.704 

195 2.047 0.681 33.516 15.729 

196 2.063 0.693 33.549 16.058 

197 2.079 0.709 33.653 16.987 

198 2.094 0.725 33.973 17.064 

199 2.109 0.740 34.159 17.073 

200 2.122 0.754 34.191 17.153 

201 2.130 0.767 34.250 17.332 

202 2.137 0.775 34.469 17.406 

203 2.157 0.787 34.716 17.641 

204 2.172 0.795 34.969 17.922 

205 2.194 0.803 35.144 18.484 

206 2.222 0.854 35.418 18.553 

207 2.245 0.859 35.766 18.658 

208 2.268 0.872 35.949 18.953 

209 2.279 0.892 36.010 19.266 

210 2.288 0.896 36.548 19.309 

211 2.301 0.903 37.179 19.731 

212 2.316 0.924 37.651 19.902 

213 2.332 0.938 38.041 20.012 

214 2.345 0.941 38.591 20.260 

215 2.354 0.951 38.852 20.739 

216 2.362 0.966 38.861 21.346 

217 2.368 0.979 38.926 21.810 

218 2.376 0.980 39.194 22.001 

219 2.384 0.981 39.474 22.290 

220 2.391 1.005 39.668 22.324 

221 2.395 1.016 39.781 22.343 

222 2.400 1.022 39.890 22.522 

223 2.405 1.028 39.954 22.661 

224 2.409 1.035 39.984 22.666 

225 2.413 1.041 39.989 22.667 

226 2.415 1.045 39.990 22.668 

227 2.417 1.051 39.990 22.669 

228 2.419 1.055 39.990 22.670 

229 2.420 1.059 39.991 22.671 

230 2.421 1.062 40.012 22.671 

231 2.423 1.063 40.061 22.672 

Illinois Ozone SIP Revision- Vehicle Emissions Inspection and Maintenance (liM) Program: Attaclnnents Page- 1392 
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232 2.425 1.063 40.116 22.673 

233 2.427 1.063 40.249 22.673 

234 2.429 1.064 40.253 22.673 

235 2.430 1.064 40.290 22.674 

236 2.431 1.066 40.385 22.675 

237 2.432 1.069 40.488 22.675 

238 2.433 1.072 40.720 22.675 

239 2.434 1.075 40.763 22.677 

c) Vehicles having composite hydrocarbon emission limitations of 2.00 grams per mile or· 

greater, in Section 240.TABLE A or Section 240.TABLE B, shall use the hydrocarbon 

fast-Qass standards contained in this subQart. Vehicles having aea composite carbon 

monoxide emission limitations of 30.0 grams per mile or greater, in Section 240.TABLE 

A or Section 240.TABLE B, shall use the carbon monoxide fast-Qass standards contained 

in this subQart. 

Hydrocarbons Carbon Monoxide 

Second Composite Phase 2 Composite Phase 2 

30 0.407 N/A 3.804 N/A 

31 0.415 N/A 3.985 N/A 

32 0.423 N/A 4.215 N/A 

33 0.436 N/A 4.440 N/A 

34 0.451 N/A 4.579 N/A 

35 0.464 N/A 4.688 N/A 

36 0.468 N/A 4.749 N/A 

37 0.475 N/A 4.783 N/A 

38 0.487 N/A 4.813 N/A 

39 0.506 N/A 4.876 N/A 

40 0.530 N/A 5.104 N/A 

41 0.549 N/A 5.217 N/A 

42 0.569 N/A 5.383 N/A 

43 0.588 N/A 5.571 N/A 

44 0.609 N/A 5.888 N/A 

45 0.621 N/A 6.199 N/A 

46 0.636 N/A 6.245 N/A 

47 0.649 N/A 6.318 N/A 

48 0.666 N/A 6.418 N/A 

49 0.679 N/A 6.540 N/A 

50 0.696 N/A 6.690 N/A 

51 0.712 N/A 6.875 N/A 

52 0.727 N/A 7.029 N/A 

53 0.745 N/A 7.129 N/A 

54 0.760 N/A 7.359 N/A 

55 0.776 N/A 7.722 N/A 

56 0.797 N/A 8.017 N/A 

57 0.814 N/A 8.249 N/A 

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58 0.826 N/A 8.425 N/A 

59 0.837 N/A 8.563 N/A 

60 0.849 N/A 8.686 N/A 

61 0.862 N/A 8.804 N/A 

62 0.872 N/A 8.916 N/A 

63 0.887 N/A 9.025 N!A 

64 0.895 N/A 9.138 N/A 

65 0.903 N/A 9.250 N/A 

66 0.925 N/A 9.354 N/A 

67 0.933 N/A 9.457 N/A 

68 0.945 N/A 9.575 N/A 

69 0.959 N/A 9.728 N/A 

70 0.970 N/A 9.938 N/A 

71 0.980 N/A 10.140 N/A 

72 0.988 NIA 10.222 N/A 

73 0.997 N/A 10.261 N/A 

74 1.022 N/A 10.278 N/A 

75 1.037 N/A 10.290 N/A 

76 1.051 N/A 10.715 N/A 

77 1.064 N/A 10.790 N/A 

78 1.075 N/A 10.844 N/A 

79 1.087 N/A 10.921 N/A 

80 1.097 NIA 11.010 N/A 

81 1.105 N/A 11.090 N/A 

82 1.114 N/A I 1.136 N/A 

83 1.136 N/A 11.136 N/A 

84 1.160 N/A 11.165 N/A 

85 1.182 N/A I 1.191 N/A 

86 1.201 N/A 11.205 N/A 

87 1.217 N/A 11.211 N/A 

88 1.233 N/A 11.211 N/A 

89 1.248 N/A I 1.211 N/A 

90 1.262 N/A 11.211 N/A 

91 1.271 N/A 11.220 N/A 

92 1.279 NIA 11.294 N/A 

93 1.287 N/A I 1.332 N/A 

94 1.295 N/A 11.355 N/A 

95 1.302 N/A I 1.383 N/A 

96 1.309 N/A 11.410 N/A 

97 1.316 N/A 11.433 N/A 

98 1.325 NIA 11.516 N/A 

99 1.339 N/A 11.820 N/A 

100 1.356 N/A 12.104 N/A 

101 1.365 N/A 12.344 N/A 

102 1.378 N/A 12.781 N/A 

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103 1.397 N/A 13.472 N/A 

104 1.420 N/A 14.405 N/A 

105 1.445 N/A 14.808 N/A 

106 1.470 N/A 14.965 N/A 

107 1.491 N/A 15.121 N/A 

108 1.506 N/A 15.372 N/A 

109 1.517 0.151 15.530 1.113 

110 1.528 0.159 15.687 1.213 

111 1.542 0.172 16.018 1.344 

112 1.559 0.186 16.527 1.399 

113 1.578 0.199 16.810 1.520 

114 1.594 0.207 16.961 1.640 

115 1.605 0.216 17.120 1.684 

116 1.615 0.229 17.135 1.693 

117 1.625 0.235 17.249 1.786 

118 1.642 0.240 17.451 2.007 

119 1.670 0.245 17.509 2.084 

120 1.694 0.261 17.605 2.179 

121 1.705 0.267 17.734 2.264 

122 1.717 0.277 18.049 2.328 

123 1.732 0.287 18.447 2.375 

124 1.747 0.298 18.592 2.437 

125 1.763 0.308 18.657 2.543 

126 1.779 0.316 18.796 2.593 

127 1.795 0.322 18.952 2.641 

128 1.810 0.329 19.137 2.663 

129 1.823 0.338 19.329 2.672 

130 1.835 0.346 19.519 2.676 

131 1.845 0.354 19.707 2.683 

132 1.854 0.356 19.882 2.817 

133 1.862 0.357 19.905 2.992 

134 1.870 0.359 20.049 3.111 

135 1.883 0.362 20.460 3.234 

136 1.888 0.364 20.746 3.304 

137 1.896 0.368 21.068 3.310 

138 1.911 0.378 21.380 3.320 

139 1.928 0.391 21.748 3.354 

140 1.949 0.402 22.046 3.436 

141 1.969 0.408 22.348 3.443 

142 1.982 0.422 22.397 3.452 

143 1.999 0.428 22.407 3.490 

144 2.011 0.432 22.417 3.552 

145 2.022 0.434 22.922 3.588 

146 2.035 0.439 22.951 3.600 

147 2.043 0.450 22.976 3.616 

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148 2.049 0.460 23.017 3.627 

149 2.063 0.467 23.073 3.636 

150 2.085 0.472 23.161 3.676 

151 2.104 0.480 23.218 3.882 

152 2.117 0.491 23.253 4.011 

153 2.127 0.503 23.337 4.047 

154 2.138 0.505 23.425 4.067 

155 2.152 0.515 23.534 4.081 

156 2.168 0.522 23.652 4.116 

157 2.186 0.527 23.739 4.251 

158 2.205 0.537 24.606 5.099 

159 2.224 0.549 25.615 5.383 

160 2.242 0.568 26.073 6.362 

161 2.268 0.586 28.496 7.926 

162 2.308 0.610 29.772 8.429 

163 2.352 0.648 31.056 9.201 

164 2.406 0.677 33.351 10.825 

165 2.421 0.699 34.890 12.291 

166 2.435 0.720 35.937 13.366 

167 2.470 0.738 37.012 14.428 

168 2.501 0.767 37.892 15.318 

169 2.537 0.828 39.028 15.699 

170 2.571 0.855 40.406 16.073 

171 2.625 0.869 41.379 16.475 

172 2.657 0.885 42.033 17.158 

173 2.683 0.900 42.432 17.532 

174 2.701 0.941 42.742 17.965 

175 2.717 0.979 43.399 18.242 

176 2.732 1.002 43.895 18.283 

177 2.756 1.025 44.227 18.480 

178 2.781 1.047 44.926 19.576 

179 2.811 1.065 45.256 20.015 

180 2.853 1.089 45.553 20.203 

181 2.898 1.109 45.753 20.433 

182 2.946 1.133 46.210 21.025 

183 2.988 1.158 47.017 21.882 

184 3.023 1.184 48.185 22.204 

185 3.057 1.209 48.741 22.859 

186 3.076 1.222 49.462 23.533 

187 3.101 1.231 50.313 24.281 

188 3.120 1.239 51.285 25.078 

189 3.136 1.254 52.076 25.276 

190 3.151 1.278 52.857 25.578 

191 3.163 1.300 52.876 25.859 

192 3.209 1.313 53.067 25.985 

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193 3.223 1.324 53.777 26.153 

194 3.237 1.340 54.242 26.582 

195 3.263 1.367 54.489 27.067 

196 3.302 1.387 54.601 27.456 

197 3.338 1.402 54.912 27.805 

198 3.372 1.417 55.588 28.070 

199 3.390 1.432 56.266 28.590 

200 3.428 1.446 56.617 28.914 

201 3.470 1.460 56.863 29.063 

202 3.493 1.477 57.204 29.502 

203 3.509 1.492 57.371 29.697 

204 3.522 1.501 57.487 29.713 

205 3.533 1.510 57.728 29.783 

206 3.550 1.522 58.097 29.942 

207 3.578 1.561 58.572 30.284 

208 3.607 1.585 59.024 30.755 

209 3.630 1.597 59.321 31.287 

210 3.658 1.607 59.715 31.549 

211 3.701 1.627 60.045 31.820 

212 3.745 1.645 60.453 32.250 

213 3.778 1.656 60.935 32.546 

214 3.814 1.663 61.307 32.808 

215 3.825 1.669 61.666 33.060 

216 3.835 1.674 62.148 33.204 

217 3.844 1.685 62.532 33.341 

218 3.853 1.700 62.546 33.414 

219 3.864 1.704 62.559 33.514 

220 3.874 1.706 62.570 33.640 

221 3.891 1.709 62.846 33.692 

222 3.928 1.711 63.097 33.711 

223 3.966 1.714 63.150 33.733 

224 4.008 1.718 63.150 33.770 

225 4.010 1.721 63.150 33.796 

226 4.012 1.723 63.150 33.810 

227 4.016 1.726 63.150 33.821 

228 4.019 1.729 63.150 33.839 

229 4.057 1.731 63.150 33.865 

230 4.065 1.733 63.150 33.894 

231 4.071 1.735 63.150 33.918 

232 4.073 1.743 63.150 33.944 

233 4.075 1.749 63.150 33.985 

234 4.077 1.753 63.153 34.014 

235 4.(}79 1.757 63.159 34.032 

236 4.081 1.762 63.173 34.051 

237 4.083 1.767 63.193 34.067 

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238 

239 

4.084 

4.085 

32 

1.772 

1.776 

63.214 

63.233 

(Source: Amended at_ Ill. Reg. __ , effective ____ _) 

IT IS SO ORDERED. 

34.079 

34.085 

I, Dorothy M. Gunn, Clerk of the illinois Pollution Control Board, hereby certifY that the 

above opinion and order was adopted on the 24th day of August 2000 by a vote of 7-0. 

Dorothy M. Gunn, Clerk 

Illinois Pollution Control Board 

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