ILLINOIS POLLUTION CONTROL BOARD
    July 21, 1994
    IN THE MATTER OF:
    )
    ENHANCED VEHICLE INSPECTION AND
    )
    R94-20
    MAINTENANCE (I/M) REGULATIONS
    )
    (Identical-in--Substance Rules)
    AMENDMENTS 35 ILL. ADM. CODE
    )
    240
    Proposal for Public Comment
    PROPOSED OPINION AND ORDER OF THE BOARD (by G. Tanner Girard):
    On July 20, 1994, the Illinois Environmental Protection
    Agency (Agency) filed this proposal for rulemaking. Section
    182(b) and (c) of the Clean Air Act (CAA), as amended in 1990,
    requires the use of “inspection and maintenance” (I/H) programs
    in areas not meeting the national ambient air quality standards
    (NAAQS) for ozone and/or carbon monoxide. The CAA specifies the
    use of “basic” I/M programs in “moderate” nonattainment areas and
    “marginal” nonattainment areas with existing I/M programs. It
    requires the use of “enhanced” I/M programs in “serious”,
    “severe”, and “extreme” ozone nonattainment areas with urbanized
    populations of 200,000 or more. In Illinois, the Chicago and
    Metro—East St. Louis (Metro—East) areas are classified as
    “severe” and “moderate” nonattainment for ozone, respectively,
    and as such are subject to the I/M requirement.
    The General Assembly recently enacted the Vehicle Emissions
    Inspection Law (625 ILCS 5/13B et seq.) effective January 18,
    1994. (P.A. 88-533.) That statute provides authority for the
    Agency to implement an enhanced I/H program and meet the United
    States Environmental Protection Agency’s (U.S. EPA’s)
    requirements for such a program. PA. 88—533 mandates enhanced
    I/M testing for the Metro-East area and certain portions of the
    Chicago nonattainment area.
    P.A. 88-533, at new Section 13B—20, mandates adoption of
    enhanced I/N rules by the identical-in-substance rulemaking
    procedure. The Agency has proposed codified U.S. EPA emissions
    standards concerning evaporative system pressure and purge
    testing for the enhanced I/H program in this docket by identical-
    in—substance procedures under Section 28.4 of the Act.
    This proposal was filed pursuant to Section 28.4 of the Act
    and is accepted for hearing. (P.A. 87-1213, effective September
    26, 1992; 415 ILCS 5/28.4.) Pursuant to the provisions of that
    section the Board is required to adopt regulations that are
    identical in substance to federal regulations that the state must
    adopt to comply with the 1990 CAA amendments. Section 28.4(g)
    provides that Section 5 of the Administrative Procedure Act (5
    ILCS 100/5-35 & 5-40) and Title VII of the Environmental
    Protection Act (415 ILCS 5/26 through 29) do not apply to this

    2
    proceeding. Thus, this proceeding will not be subject to First
    Notice or Second Notice review by the Joint Committee on
    Administrative Rules. Rather, the Board will cause a Notice of
    Proposed Amendments to Appear in the Illinois RecTister. The
    Board will receive public comments on the proposed amendments for
    a period of 45 days after that date of publication. The Board
    will then proceed to adopt amendments based on the Agency’s
    proposal.
    However, major portions of the federal enhanced I/M scheme
    are not codified in federal regulations, but exist only as
    federal guidance. Section 7.2 of the Act, which defines
    “identical—in—substance” rulemaking and establishes conditions
    for its use, allows the Board only to adopt federal rules using
    this mechanism.
    The Agency has accordingly chosen to use the next—fastest
    procedural mechanism, the Section 28.5 “fast—track” rulemaking
    (P.A. 87—1213, effective September 26, 1992; 415 ILCS 5/28.5),
    for those segments of the enhanced I/N rules that are based on
    federal guidelines, as that rulemaking also implements the CAA.
    The Board has designated that companion docket as R94-19.
    The Agency’s proposals represent the procedural means by
    which the Agency seeks to achieve the mobile source emissions
    standards necessary for the implementation of the enhanced I/H
    program. The standards proposed in R94—19 incorporate federal
    guidance. The Agency is pursuing codified U.S. EPA emissions
    standards concerning evaporative system pressure and purge
    testing for the enhanced I/M program in this docket by identical-
    in—substance procedures under Section 28.4 of the Act. In
    companion docket R94-19, the Agency is pursuing emissions
    standards based on U.S. EPA guidance.
    The Board does not normally conduct public hearings in
    identical-in—substance proceedings, but we will conduct a hearing
    in this matter. Since this proposal will ultimately result in a
    state implementation plan (SIP) revision, federal law requires
    that the state conduct a hearing. The Board will conduct that
    hearing so that it coordinates well with the hearings to be
    conducted in docket R94-19.
    In the interest of administrative economy, the Board directs
    the Hearing Officer to verify that the persons on the Notice List
    in this proceeding wish to continue to receive mailings in this
    proceeding.
    ORDER
    The Board directs the Clerk to cause the filing of the
    following proposal for publication in the Illinois Register:

    3
    TITLE 35: ENVIRONMENTAL PROTECTION
    SUBTITLE B: AIR POLLUTION
    CHAPTER I: POLLUTION CONTROL BOARD
    SUBCHAPTER k: EMISSION STANDARDS AND
    LIMITATIONS FOR MOBILE SOURCES
    PART 240
    MOBILE SOURCES
    SUBPART A: DEFINITIONS AND GENERAL PROVISIONS
    Section
    240. 101
    240. 102
    240. 103
    240.104
    240.105
    240.106
    240.107
    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
    Applicability
    Heavy-Duty Diesel Vehicle Smoke Opacity Standards and
    Test Procedures
    SUBPART F: EVAPORATIVE TEST STANDARDS
    Section
    240. 172
    240.173
    Evaporative SYstem Pressure Test Standards
    Evaporative System PurcTe Test Standards
    240.Appendix A Rule into Section Table
    240.Appendix B Section into Rule Table
    AUTHORITY: Implementing Sections 9, 10 and 13 and authorized by
    Sections 27 and 28.4 of the Environmental Protection Act -(Ill.
    11ev. Ctat. 1989, oh. 111 1/2, par3. 1009, 1010, 1013 and 1027-)-
    1415 ILCS 5/9, 10. 13, 27, and 28.4 (1992)1.
    Section
    240.121
    240. 122
    240. 123
    240. 124
    240. 125
    Section
    240. 140
    240.141

    4
    SOURCE: Adopted as Chapter 2: Air Pollution, Part VII: Mobile
    Sources, filed and effective April 14, 1972; codified at 7 Ill.
    Reg. 13628; amended in R85—25, at 10 Ill. Reg. 11277, effective
    June 16, 1986; amended in R90—20 at 16 Ill. Reg. 6184, effective
    April 7, 1992; amended in R94—
    _____
    at
    _____
    Ill. Reg.
    effective
    ___________________
    NOTE: Capitalization denotes statutory language.
    SUBPART F: EVAPORATIVE TEST STANDARDS
    Section 240.172
    Evaporative System Pressure Test Standards
    ~ The vehicles shall be inspected utilizing an
    evaporative system Pressure test adopted by the AgencY.
    ~ The vehicle shall fail the evaporative system pressure
    test if one of the following occurs:
    fl
    The system cannot maintain a system pressure above
    eight inches of water for up to two minutes after
    being pressurized to 14 Dlus or minus 0.5 inches
    of water
    21
    No pressure droP is detected when the gas cap is
    loosened
    ~j The fuel vapor storage canister is missing or
    obviously damaged
    j) System vapor lines or hoses are missing or
    obviously disconnected; or
    ~j The gas ca~is missing.
    (Source: Added at
    _____
    Ill. Reg.
    ,
    effective
    Section 240.173
    Evaporative System Purge Test Standards
    ~j The vehicle shall be inspected utilizing the
    evaporative system purge test adopted by the Agenqy~
    ~j The vehicle shall fail the evaporative system Purae
    test if the canister purge system flow as measured
    during the course of the transient exhaust emission
    test is less than one liter.
    (Source: Added at
    _____
    Ill. Reg.
    ________
    ,
    effective
    IT IS SO ORDERED

    5
    I, Dorothy M. Gunn, Clerk of the Illinois Pollution Control
    Board, hereby certify that the above opinion and, rder was
    adopted on the
    _________________
    day of
    -
    1994, by a vote of ~
    .
    ‘-7
    Dorothy M. G9z~h, Clerk
    Illinois Po1~1~tionControl Board

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