ILLINOIS POLLUTION CONTROL BOARD
    March
    5,
    1981
    IN THE MATTER OF:
    AMENDMENT TO CHAPTER
    2, AIR POLLU-
    )
    R79-3
    TION CONTROL RULES AND REGULATIONS
    )
    (PROPOSED RULE
    203(j)).
    )
    OPINION AND ORDER OF THE BOARD
    (by I. Goodman):
    On January
    29,
    1979 the Illinois Environmental Protection
    Agency filed a proposal to amend Rules
    101,
    103, and 105 of
    Chapter
    2, the Board’s Air Pollution Control Rules and Regulations,
    regarding permits, maintenance programs, replacement of control
    equipment,
    and related changes
    in definitions.
    The proposal was
    consolidated for purposes of hearing with two proceedings, R78-10
    (fugitive particulate emission limitations) and R78—11
    (particulate
    emissions
    from steel mills).
    Three merit hearings, and three later economic impact hearings,
    were held as follows:
    March
    13,
    1979
    Chicago
    March 14,
    1979
    Springfield
    March
    23,
    1979
    Chicago
    August
    6,
    1979
    Chicago
    August
    7,
    1979
    Springfield
    August 21, 1979
    Chicago
    On January
    6,
    1981 the hearing officer granted the Agency’s
    November 21,
    1980 motion to withdraw the permit- and maintenance-
    related amendments, but to retain the replacement—related amend-
    ment (Rule 105(a)(3), reproposed as Rule 203(j)).
    The record
    closed on February 13,
    1981.
    No post—hearing public comment has
    been received relating to this proceeding.
    The Agency proposes that, in certain townships containing
    total
    suspended particulate
    (TSP) primary national ambient air
    quality standard
    (NAAQS) nonattainment areas,
    “no person shall
    replace the air pollution control equipment on any source or
    particulate matter with a less effective kind of control equip-
    ment.”
    Several townships within eleven counties are specifically
    listed.
    In the original proposal, the Agency sought to “cap” all
    emission rates after July
    1,
    1979 at the actual hourly maximum
    rates emitted from the source or the control equipment in the year
    1977,
    although a year after
    1975 could be used upon a showing that
    4
    1—67

    1977 was an atypical year.
    All future operating petmits
    wouli
    contain the emission limitations so referenced.
    The Agency stated in its January 25,
    1979 letter filing the
    proposal that
    “uriless
    existing sources
    in
    areas
    with high
    concentrations of sources
    which have found
    it possible to keep
    their emission rates at current overcompliance levels
    are
    requirel
    to continue to do so,
    additional, more stringent requirements
    will
    have to be imposed upon them,
    as well
    as upon new sources seekin~j
    to locate in those areas.”
    “This need to ‘codify overcompliance’
    has arisen because the Agency’s air quality modeling has been done
    on the basis of projected actual emission rates rather than max-
    imum allowable emission rates.
    Theoretically,
    thisi
    could perr~it
    an air quality standard violation if a source
    should, upon occasion,
    emit more than projected actual but less than the maximum allow-
    able.”
    This same statement, although made with reference to the
    maintenance—related regulatory proposal, applies equally to the
    “capping” of control equipment in proposed Rule 203(j)
    as a stat;~-
    ment of the reason for the Agency’s proposal.
    TECHNOLOGICAL FEASIBILITY
    Most of the testimony upon the merits of the proposed rule
    concerned whether it would prohibit sources from replacing equip-
    ment if emissions were increased not because of the efficiency of
    the equipment, but because of changes in production volume, pro-
    duction processes,
    or hours of operation (R.133—7,
    423,
    624—7).
    Other industry concerns were that it was unnecessary for an apprD\’-
    able State Implementation Plan
    (SIP),
    see
    42 U.S.C.
    §7401
    (R.651,
    70_1(E)*); that it should not be applied in TSP attainment areas
    (R.644—5);
    that is interfered with business management and decisiou-
    making
    (R.643—4,
    732—4,
    28—9(E),
    34—5(E));
    that it penalized sources
    who are
    in compliance with TSP emission limitations
    (R.784,
    18(E),
    35—8(E)); and that
    it may make offsets unavailable for the location
    of new or modified sources and may withdraw credits from the off-
    setting sources (R.68—9,
    225—7,
    61—2(E)),
    Similarly, written
    comments received from various industries objected that the pro-
    posed rule would deter future overcompliance, that no improvement
    in air quality would result,
    that it
    is redundant of existing
    Agency permitting authority,
    and that it is inconsistent with
    USEPA’s promotion of the use of bubbles in quantifying emission
    limitations.
    The Agency’s closing statement
    (R.159—0) makes
    it clear
    that
    the rule
    is intended to keep emission levels below those which
    ;irc
    allowed by regulations
    in those instances in which sources
    prcsent1.~.’
    located
    in nonattainment areas are
    “overcomplying”.
    The Agency
    offered no testimony material to industry’s concerns.
    Indeed,
    the author of the Institute of Natural Resource’s economic iIipi~ct
    study stated that he could not obtain an Agency response as to
    whether the rule would apply
    if production was increased,
    or if
    other changes independent of equipment replacement increased
    emis-
    sions, even if the increased emissions did not exceed the allowa’le
    limitation.
    There was disagreement within the Agency on this
    oi~t
    (R.55—7,
    68—9(E)).
    *“E” designates the economic hearing transcript.
    4
    1—68

    The Board finds
    from a reading of the record that the Agency
    did not show that the rule was
    feasible technologically.
    The
    scope of the term in the proposed rule,
    “less effective,”
    as
    applied to the substituted equipment, was inadequately defined.
    It was not intended to refer to the efficiency of the equipment
    (R.55,
    119—20, 398—410,
    615—8),
    although that was industry’s under-
    standing
    (R.703—1,
    732—4).
    If
    it is not to refer to efficiency,
    the Board
    is constrained to ascertain what the term is
    to indicate.
    Although the Board could adopt
    a rule specifying “efficiency”
    instead of “effectiveness”,
    and could even prohibit replacements
    of any kind where emission levels would increase yet not exceed
    allowable levels,
    the
    Board concludes that
    such
    rule would he
    inequitable from a number of viewpoints.
    First,
    the rule could inhibit the testing
    of newly marketel
    or innovative control equipment which involves replacement of
    existing equipment.
    Secondly,
    the rule would unfairly penalize
    those sources which are in compliance with
    the
    applicable TSP
    emission
    limitation.
    It would be unreasonable for the State to
    usurp
    the business decisions of sources which have adopted control
    strategies
    in reliance on the Board’s regulations and consequently
    are operating well within the law;
    for the
    State to so actively
    impinge on business management would he an unwarranted invasion of
    the rights of corporate citizens.
    Thirdly,
    the rule would limit
    modifications of major complying sources located
    in nonattainment
    areas by eradicating credits presently available due to their
    aye;:-
    compliance; which,
    under Rule 10.3 of the Agency’s Rules
    for
    Issuance of Permits to New or Modified Air Pollution Sources
    Affecting Nonattainment Areas
    (Rules)
    (~9.1(e) of the Act;
    see
    45
    Fed.Reg.
    58896),
    are
    property rights; similarly,
    it would prohibit
    fTIë T5~ationof new industry
    in nonattainment areas.
    Such
    mattecs
    are more properly addressed by
    an
    Agency proposal pursuant to
    §9.1(d)
    of the Illinois Environmental Protection Act, as amended
    September
    4,
    1980.
    Finally,
    the rule apparently was proposed to facilitate
    the
    Agency’s air quality demonstrations submitted with the 1979 TSP :$I~
    revision
    (R.45—7,
    108—11,
    419—20,
    427—8).
    However, the USEPA
    has
    stated that the rule was not necessary to approval of
    the
    1979 T’~P
    SIP.
    45 Fed.~a. 11480; see 45 Fed.~. 58896.
    Even
    if
    the ruln
    were to facilitate air quality demonstrations for future
    TSP SI~’’;
    the adverse effects of the rule upon those sources
    it would
    3pply
    to——those in overcompliance——are more compelling.
    The Agency
    itself recognizes this question of equity
    (R.420-1).
    Furthermore,
    the Agency’s Rules do not necessarily prohibit a definition of
    allowable rates which encompasses
    that level actually emitted, as
    it provides for maximum operation and includes estimates of emis-
    sions during malfunctions,
    etc.
    In cases where replacement of
    equipment constitutes a “modification” of the source
    for purposes
    of these Agency Rules,
    proposed Rule
    203(j)
    is duplicative of
    the
    Agency’s authority.
    In the remainder of the cases,
    ~
    nonmajor
    sources in nonattainment areas,
    the ~:ictthat unacceptable TSP
    ai.r
    quality
    is due in an unquantifiable measure to dust from farm
    lend,
    roads, and other nonstationary, nontraditional sources
    (R.47-2,
    10~8, 236,
    257—2,
    273—8,
    282—5) militates against the Board’s
    adoption of the rule.
    41—69

    ECONOMIC REASONABLENESS
    Even assuming that technological feasibility could be shown,
    there is no reliable evidence
    in the record of
    the
    costs to indu~tr;,
    Illinois government or Illinois citizens of the proposed rule.
    The
    author of the impact study,
    although explaining that dollar
    figures
    were difficult to calculate,
    stated that his results were not reli-
    able because the sample of twelve sources was statisticall.y insiq-
    nificant
    (R.13—9,
    89—91).
    The Agency offered no evidence of its
    own of the economic impact of the rule.
    The
    Board finds that the
    record is insufficient for purposes of
    a finding as
    to economic
    reasonableness.
    This Opinion constitutes the findings of fact and conclus~ns
    of law of the Board in this matter.
    ORDER
    It
    is the Order of the Illinois Pollution Control Board that
    proceeding R79—3 be and hereby is dismissed.
    I, Christan
    L. Moffett, Clerk of the Illinois Pollution
    Control Board,
    hereby certify that the above Opinion and Order
    w~readopted on the
    ~
    day of
    ~
    ,
    1981 by a vote of
    Illinois Poll
    Boarci
    4 1—70

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