ILLINOIS POLLUTION CONTROL BOARD
    July 25,
    1991
    MODINE MANUFACTURING CORP.,
    )
    Petitioner,
    )
    PCB 88-25
    (Variance)
    v.
    )
    ILLINOIS ENVIRONMENTAL
    )
    PROTECTION AGENCY,
    )
    )
    Respondent.
    ROY
    M.
    HARSCH
    AND
    GARDNER,
    CARTON
    &
    DOUGLAS
    APPEARED
    ON
    BEHALF
    OF
    PETITIONER;
    KATHLEEN
    C. BASSI APPEARED ON BEHALF OF RESPONDENT.
    OPINION
    AND
    ORDER OF THE BOARD
    (J.
    Anderson):
    This matter comes before the Board on the Petition for
    Variance filed by Modine Manufacturing Corp. on January 25,
    1988.
    By Order of February 4,
    1988, the Board requested additional
    information.
    Modine filed an amended petition for variance on
    March,
    17,
    1988,
    and an open waiver of the deadline for Board
    decision on April
    8,
    1988.
    Modine filed a second amended
    petition for variance on May 10,
    1988.
    The Agency filed its
    first recommendation on August 5,
    1988.
    Modine filed a response
    on October 11, 1988.
    Modine filed exhibits inadvertently omitted
    from its response on October 26,
    1988.
    On May 24,
    1989,
    the
    Agency filed an addendum to its recommendation, and Modine filed
    its third amended petition
    for variance.
    The Board received three letters of objection to the
    variance on February 17,
    1988, March 2,
    1988, and March 11,
    1988.
    The public hearing occurred on May 25,
    1989,
    and members of the
    public attended and participated.
    Modine filed a supplement to
    the record on July 17,
    1989, with a letter disclosing events
    subsequent to the public hearing and its post—hearing brief on
    July 21,
    1989.
    The Agency filed its post-hearing brief on August
    21,
    1989.
    Modine filed a reply brief on September 21,
    1989.
    On July 3,
    1990, the Board ordered briefing on questions
    arising through its decision in R87-36,
    a related proceeding on a
    petition by Modine for site-specific rulemaking.
    On August 9,
    1990, Modine filed its fourth amended petition for variance in
    response to the Board order.
    The Agency filed its amended
    recommendation on September 12,
    1990, suggesting that the Board
    grant the petition in part and deny it in part.
    FACTS
    AND
    ISSUES
    Modine operates a plant that employs 269 workers at
    124—157

    2
    Ringwood,
    Illinois.
    The “McHenry” plant uses two processes, the
    older “Alfuse” process and the newer “Nocolok” process, to
    produce various types of heat exchange condensers and evaporators
    for various customers.
    The Alfuse process produces process
    wastewater and non—contact cooling water.
    Process wastewaters
    arise from a wet scrubber, water quenches,
    a slurry wash,
    and
    test tanks, with the scrubber producing most of the process
    wastewater.
    The Nocolok process produces only non—contact
    cooling water.
    All plant service water originates from an on—
    site well.
    About 3500 gallons per day
    (gpd)
    of wastewater
    originate from plant sanitary facilities.
    The Alfuse and Nocolok
    processes produce about 81,000 gpd of non—contact cooling water.
    The total discharge from all sources combined total about 300,000
    gpd.
    In the wastewater treatment system, the process wastewaters
    are combined and treated with lime in the first of three
    treatment lagoons for neutralization and removal of fluoride,
    zinc, and aluminum.
    The sanitary wastewater is first treated in
    an extended aeration system, then discharged into this first
    lagoon.
    The non—contact cooling waters also enter this lagoon
    system.
    The first lagoon removes suspended solids and
    deoxygenating wastes.
    Flow from the first lagoon discharges to
    the second lagoon, then the third,
    in series, before discharge to
    a chlorine contact tank.
    The mean hydraulic retention time of
    the lagoon system is 15 to 20 days.
    The treated effluent enters
    an unnamed tributary of Dutch Creek about two miles upstream of
    the confluence,
    and Dutch Creek drains into the Fox River about
    two miles farther downstream.
    The Board has granted Modine relief from the generally-
    applicable limitations and standards in prior proceedings.
    On
    May 29,
    1984,
    in PCB 82-111, the Board granted Modine variance
    relief from the ammonia nitrogen, un—ionized ammonia,
    biochemical
    oxygen demand, and total suspended solids standards and
    limitations for the period from May 29,
    1984 until March
    1,
    1985.
    See Modine Manufacturing Co.
    v.
    EPA,
    No. PCB 82—111,
    59 PCB 185,
    215
    (May 29,
    1984).
    On December 22,
    1987, in PCB 85—154,
    the
    Board granted another variance for these parameters for the
    period from October 16,
    1985 through December 31,
    1987.
    ~
    !4odine Manufacturing Co.
    v.
    EPA,
    No. PCB 85-154,
    84 PCB 735, 740-
    41
    (Dec.
    22,
    1987).
    In R87—36, effective May 31, 1990, the Board
    adopted site-specific rules relating to Modine’s fluoride,
    biochemical oxygen demand, and total suspended solids discharges.
    See In re Site-Specific Limitation for the Modine Manufacturing
    Co.
    Facility. Ringwood. Illinois,
    No. R87—36,
    111 PCB 461, 482—
    23
    (May 24,
    1990).
    The nature of the relief sought in this proceeding and the
    Agency’s recommendation have changed throughout the course of
    this proceeding.
    Initially, Modine sought the following with
    regard to ammonia—nitrogen, un—ionized ammonia, biochemical
    124—158

    3
    oxygen demand, and total suspended solids:
    a new variance,
    or a determination that the rules in
    question separately and in combination are
    unreasonable, arbitrary and capricious as specifically
    applied to its McHenry Plant
    Petition for Variance at
    2.
    The Agency Recommendation challenged Modine’s assertions as to
    the treatability of its wastewater and impact on the receiving
    stream.
    The Agency Recommendation highlighted many perceived
    informational deficiencies
    in the petition and criticized the
    petition as deficient for lacking a compliance plan.
    The Agency
    asserted that Modine sought a permanent variance ~ontrary to law
    and recommended denial of the requested variance.
    The first and
    second amended petitions for variance added further information
    and arguments to the record.
    The Third Amended Variance Petition
    added further arguments as to the originally-requested
    pollutants,
    but further added variance requests as to fluoride
    and barium discharges.
    ~g
    Third Amended Variance Petition at 5-
    6.
    When Modine filed its fourth amended petition, dated August
    9,
    1990,
    it sought relief more limited in many ways from the
    original petition, although it added a request as to zinc.
    By
    this last filing, Modine added definite variance expiration dates
    for each pollutant,
    and it dropped its request as to barium.
    Modine’s fourth amended petition retained the prior requests for
    relief as to ammonia nitrogen, un—ionized ammonia, biochemical
    oxygen demand, total suspended solids, and fluoride.
    Similarly,
    the Agency’s amended recommendation of September 12,
    1990 no
    longer urged a blanket denial of variance relief.
    In the
    intervening time from January 25,
    1988 until August
    9,
    1990,
    Modine has effected changes to its wastewater treatment system,
    completed October
    1,
    1990,
    and the Board granted a site-specific
    rule for Modine’s fluoride, biochemical oxygen demand,
    and total
    suspended solids discharges in R87—36, effective May
    31,
    1990.
    ~
    14 Ill. Reg. 9437
    & 9460
    (June 15,
    1990).
    In R87—36, the
    Board also determined that no relief was necessary as to barium
    pursuant to the background pollutant exception of 35
    Ill.
    Adm.
    Code 304.103.
    See In re Site-Specific Limitation for the Modine
    Manufacturing Co.,
    supra, at 482-23.
    As of this time,
    the relative positions of the parties are
    summarized point-by-point as follows:
    1
    This reflects the Agency’s position as late as the public
    hearing held May 25,
    1989,
    g
    Tr.
    28-31,
    and when
    it filed
    its
    post-hearing brief on August 21,
    1989.
    See Post-Hearing Brief at
    3—8.
    12
    ~—
    159

    4
    Ammonia Nitrogen
    (NH2—N)
    (Sections 302.212. 304.105
    & 304.301)
    Modine:
    For the period from December 31,
    19872 through October
    1,
    1990:
    3.2 mg/i (monthly average)
    May through September
    4.4 mg/i (monthly average)
    October through April
    4.4 mg/i (daily maximum)
    May through September
    4.4 mg/i (daily maximum)
    October through April
    Agency:
    For the period from the date of the Board Order until
    October 1,
    1990:
    Grant requested limits.
    Un—ionized Ammonia (Section 302.212(b))
    Modine:
    For the period from December 31, 1987~through October
    1,
    1990:
    0.08 mg/i
    Agency:
    For the period from the date of the Board Order until
    2
    In the January
    25,
    1988 petition
    for variance,
    Modine
    sought an extension of the prior
    variance of PCB
    85—154,
    a new
    variance,
    or
    a
    declaration
    that
    the
    standards
    for
    ammonia—
    nitrogen, un—ionized ammonia, biochemical oxygen demand, and total
    suspended solids did not apply to its discharges because they were
    “unreasonable,
    arbitrary and capricious as specifically applied”
    to its discharges.
    Petition for Variance at 2.
    The fourth amended
    petition clearly requested an inception date of December 31, 1987,
    the day the PCB 85-154 variance expired, for fluoride, biochemical
    oxygen demand, and total suspended solids.
    It requested a variance
    “until October
    1,
    1990” for ammonia—nitrogen, un—ionized ammonia,
    and
    zinc.
    See
    Fourth
    Amended
    Petition
    at
    6.
    The
    Agency
    interpreted
    the requests
    as to
    ammonia—nitrogen and un—ionized
    ammonia as for the period beginning December 31,
    1987,
    yet stated
    that Modine was unclear as to the requested inception as to zinc.
    See
    Agency’s Amended Recommendation at
    2.
    The Board reads
    the
    requests as to ammonia—nitrogen and un—ionized ammonia as for the
    period beginning December 31,
    1987,
    consistent with the Agency’s
    interpretation.
    However,
    the Board fails to see how the Agency
    interpreted this same passage as unclear as to zinc.
    Therefore,
    the Board
    interprets
    the
    requested
    inception
    date
    for
    zinc
    as
    December 31,
    1987 for the sake of the following discussion.
    See supra note 2.
    1Th—
    160

    5
    October
    1,
    1990:
    Grant requested limits.
    Difference between the parties:
    The inception date,
    i.e., the
    period from December 31, 1987 until the date of the
    Board Order.
    Biochemical Oxv~enDemand
    (BOD5)
    (Section 304.120(c))
    Modine:
    For the period from December 31,
    1987k through May 31,
    1990~:
    25 mg/i
    (monthly average)
    May through September
    35 mg/l
    (monthly average)
    October through April
    60 xng/l
    (daily maximum)
    May through September
    70 mg/l (daily maximum)
    October through April
    Agency:
    For the period from the date of the Board Order until
    May 31,
    1990:
    Grant requested limits, but retroactive relief
    is
    unwarranted.
    Difference between the parties:
    The retroactive inception date,
    i.e., the period from December 31,
    1987 until the date
    of the Board Order.
    Total Suspended Solids
    (TSS)
    (Section 304.120(c))
    Nadine:
    For the period from December 31,
    19876 through May 31,
    1990~:
    12 mg/i (monthly average)
    30 mg/l
    (daily maximum)
    Agency:
    For the period from the date of the Board Order until
    May 31,
    1990:
    See supra note 2.
    ~
    The effective date
    of
    the relief
    granted
    in the site-
    specific rulemaking in R87-36.
    6
    See supra note 2.
    See supra note 5.
    124—16
    1

    6
    Grant requested limits, but retroactive relief is
    unwarranted.
    Difference between the parties:
    The retroactive inception date,
    i.e.,
    the period from December
    31, 1987 until the date
    of the Board Order.
    Fluoride (Sections 302.208
    & 304.105)
    Nadine:
    For the period from December 31,
    19878 until May 31,
    1990~:
    4.0 mg/i (monthly average)
    5.6 mg/l (daily maximum)
    Agency:
    For the period from the date of the Board Order until
    May 31,
    1990:
    Grant requested limits, but retroactive relief is
    unwarranted.
    Difference between the parties:
    The retroactive inception date,
    i.e., the period from December 31,
    1987 until the date
    of the Board Order.
    Zinc (Section 304.124)
    Modine:
    For the period from December 31,
    198710 until October
    1,
    1990:
    No limitation stated
    Agency:
    Deny the requested variance because Modine has proven
    no hardship and proposed no limitation.
    Difference between the parties:
    Any grant of relief.
    DISCUSSION
    The Board made specific findings in the site-specific
    rulemaking, R87-36:
    T)here
    is no alternative treatment method for Nodine
    which is simultaneously technically feasible and
    8
    See supra note 2.
    See supra note 5.
    10
    See supra note 2.
    124—162

    7
    economically reasonable.
    .
    .
    .
    At
    least as regards
    the parameters at issue,
    (Modine’s effluent
    is not a
    limiting factor in the quality of the receiving
    waterway.
    In re Site-Specific Limitation for the Modine
    Manufacturing Co.,
    supra,
    at 478.
    Subsequent to that Opinion and Order of May 24,
    1990 relating to
    biochemical oxygen demand,
    total suspended solids, and fluoride,
    the Agency recommends that the Board grant the requested
    variances for all parameters except zinc.
    See Agency’s Amended
    Recommendation at 4-5.
    Therefore, since the initial filing of
    this proceeding, the issues in this proceeding have reduced to
    two:
    (1) the propriety of retroactive relief, and
    (2) whether
    relief is warranted as to zinc.
    The Board now addresses these
    issues in turn.
    Retroactive Variance Relief
    Nodine filed its petition for site-specific rulemaking,
    in
    R87—36, on October 16,
    1987-—76 days before the December 31,
    1987
    expiration of the variance in PCB 85-154.
    Nodine filed the
    initial petition in the instant proceeding,
    requesting variance
    relief as to ammonia—nitrogen, un—ionized ammonia,
    biochemical
    oxygen demand,
    fluoride,
    and total suspended solids, on January
    25,
    1988, 25 days after the expiration of the prior variance.
    l4odine first requested relief as to zinc on August 9,
    1990.
    Fluoride and zinc were not the subject of PCB 85-154.
    See Nodine
    Manufacturing Co.
    v.
    EPA,
    No. PCB 85—154,
    84 PCB at 740-41.
    As a general rule,
    in the absence of unusual or
    extraordinary circumstances, the Board renders variances as
    effective on the date of the Board order in which they issue.
    LCN Closers,
    Inc.
    v. EPA, No. PCB 89—27,
    101 PCB 283,
    286
    (July
    27,
    1989); Borden Chemical Co.
    v. EPA,
    No. PCB 82—82,
    67 PCB 3,6
    (Dec.
    5,
    1985); City of Farmington v.
    EPA, No. PCB 84-166,
    63 PCB
    97,
    98
    (Feb.
    20,
    1985); Hansen-Sterling Drum Co.
    v.
    EPA, No. PCB
    83—240,
    62 PCB 387,
    389
    (Jan.
    24,
    19856); Village of Sauget v.
    ~,
    No. PCB 83—146,
    55 PCB 255,
    258
    (Dec.
    15,
    1983); Olin Corp.
    v.
    EPA, No. PCB 83—102,
    53 PCB 289,
    291
    (Aug 30,
    1983).
    A variance is not retroactive as a matter of law, and
    the Board does not grant variance retroactivity unless
    retroactive relief is specially justified.
    Deere
    & Co.
    v. EPA, No. PCB 88-22,
    92 PCB 91,
    94
    (Sept.
    8,
    1988)
    (citations omitted).
    Absent a waiver of the statutory due date,
    Section 38(a)
    of
    the Environmental Protection Act requires the Board to render a
    decision on a variance within 120 days of the filing of a
    124—163

    8
    petition.
    ~
    Ill. Rev. Stat.
    1989 ch.
    111½, par.
    1038(a)
    (amended from 90 days by P.A.
    84—132 0,
    effective Sept.
    4,
    1986).
    For this reason,
    a petitioner that wishes a variance to commence
    by a certain date must file its petition at least 120 days prior
    to the desired inception date.
    ~g
    EPA v.
    Citizens Utilities Co.
    of Illinois,
    No. PCB 79—142,
    56 PCB 1,
    4
    (Jan.
    12,
    1984)
    (Enforcement action in which inception date of variance was at
    issue).
    This is apparently the position the Agency desires the
    Board to take,
    since the Agency requests that the ~oard make any
    variance effective on the date of the Board Order.
    1
    As we stated in Fedders-USA v.
    EPA,
    No. PCB 86-47,
    98 PCB
    15,
    19
    (Apr.
    6,
    1989):
    The
    Board
    will not
    .
    .
    .
    agree to back—date variances
    unless the variance is timely filed
    (i.e.
    120 days
    prior to the termination of the prior variance, absent
    unusual circumstances and absent good reasons for
    subsequent delay in the proceeding).
    The rationale behind this general rule is twofold, and the Board
    has set it forth in prior opinions.
    First,
    To grant retroactive relief as requested would
    encourage other companies to file in an untimely
    manner.
    DM1.
    Inc.
    v.
    EPA, No. PCB 88—132,
    96 PCB 185,
    187
    (Feb.
    23,
    1987).
    Further,
    The Board is inclined not to grant retroactive relief,
    absent a showing of unavoidable circumstances, because
    the failure to request relief in a timely manner is a
    self-imposed hardship.
    American National Can Co.
    v.
    EPA, No. PCB 88-203,
    102
    PCB 215,
    218
    (Aug.
    31,
    1989).
    However, the Board has granted variances with “retroactive”
    inception dates under certain circumstances.
    The nature of the
    circumstances has dictated the inception date in each case.
    The Board has made the variance retroactive to the date on
    which we would have rendered a decision——i.e., 120 days from the
    date the petition was filed--where there was a delay of the
    proceeding through no fault of the petitioner.
    Allied Signal,
    Of
    course,
    this
    would
    result
    in
    dismissal
    of
    this
    proceeding because the requested termination dates are past.
    124—164

    9
    Inc.
    v. EPA, No. PCB 88—172,
    105 PCB 7,
    12
    (Nov.
    2,
    1989)
    (procedural delay); Morton Chemical Div.
    v.
    EPA, No. PCB 88-102,
    96 PCB 169, 181
    (Feb.
    23,
    1989)
    (confusion over interpretation of
    federal regulations, the Agency changed its view during the
    course of the proceeding, and the petitioner sought compliance
    during the pendency); Union Oil Co.
    of California,
    No. PCB 84-
    66,
    63 PCB 75,
    79
    (Feb.
    20,
    1985)
    (delay was beyond the control
    of the petitioner).
    We have used a shorter period than the
    statutory time
    for decision to back—date a variance where we have
    otherwise viewed the petition as timely filed prior to the date
    on which the petitioner required the relief.
    Monsanto Co.
    v.
    ~,
    No. PCB 88—206(B),
    98 PCB 267,
    273
    (Apr.
    27,
    1989)
    (filed 92
    days before compliance deadline).
    However, this type of
    “backdating” is entirely consistent with the Board’s repeatedly—
    enunciated disinclination to grant retroactive variances.
    In
    these cases, the Board did little more than confer an inception
    date of the latest date on which the Act would have required a
    Board decision, were it not for a waiver of that deadline.
    Under
    certain circumstances there is a legitimate interest on the part
    of the Board and all parties that the petitioner grant a waiver
    of the 120 day period, and this merely serves to avoid penalizing
    a petitioner for having submitted such a waiver.
    The Board has applied an earlier inception date than the 120
    days where there are unavoidable, special, or extraordinary
    circumstances.
    American National Can Co.
    102 PCB at 218
    (11 days
    after filing, where petitioner diligently sought compliance and
    there was no reason to anticipate the need for a variance until
    it was too late to timely file); Minnesota Mining and Manufac-
    turing Co.
    v.
    EPA, No. PCB 89-58,
    102 PCB 223, 226
    (Aug.
    31,
    1989)
    (day after filing,
    where petitioner learned of error that
    resulted in non-compliance only shortly before filing); Fedders-
    USA, 98 PCB at 19
    (date of filing, where extended proceeding for
    prior variance ended only a short time before filing); Pines
    Trailer Co.
    v.
    EPA, No. PCB 88—10, 90 PCB 485, 488
    (June 30,
    1988); Bloomington/Normal Sanitary District
    v.
    EPA,
    No.
    PCB 87-
    207,
    87 PCB 21,
    22
    (Mar.
    10,
    1988)
    (nine days after filing, where
    there were unexpected construction delays and the petitioner made
    a good faith effort at compliance); Classic Finishing Co.
    v.
    EPA,
    No. PCB 84—174(B),
    70 PCB 229,
    233
    (June 20,
    1986)
    (date of
    filing first amended petition, where there was a change in
    company ownership,
    an ongoing compliance effort that resulted in
    updatings of the petition and eventual compliance before the date
    of the Board decision,
    and due to nature of the materials
    involved and the technology-forcing nature of the underlying
    regulation); Chicago Rotoprint Co.
    v. EPA, No. PCB 84—151,
    63 PCB
    91
    (Feb.
    20,
    1985)
    (35 days after filing, where need for variance
    was not known earlier).
    The Board has also occasionally applied
    an effective date that ante-dates the filing of the petition
    under the extreme of such circumstances.
    Deere
    & Co.,
    92 PCB at
    94
    (Sept.
    8,
    1988)
    (20 days prior to filing, where petitioner
    diligently sought relief and good faith efforts appeared to have
    124—165

    10
    resulted in compliance prior to the Board decision); Midwest
    Solvents Co.
    of Illinois v.
    EPA,
    No. PCB 84—5,
    57 PCB 369,
    371
    (Apr.
    5,
    1991)
    (nine days before filing, where the petitioner was
    diligent in seeking relief and the delay in filing arose through
    procedural confusion over the extension of a prior provisional
    variance).
    Other cases underscore the fact that the timliness of filing
    is a primary factor in consideration of the “special
    circumstances.”
    First,
    there are those in which the Board
    routinely refused to apply a retroactive inception date where
    either the petitioner filed late without explanation or where
    delay resulted through some fault of the petitioner.
    ~
    Closers. Inc.,
    101 PCB at 286; DM1.
    Inc., 96 PCB at 187; Borden
    Chemical Co.,
    67 PCB at
    6; City of Farmington,
    63 PCB at 98;
    Hansen-Sterling Drug Co.,
    62 PCB at 389; Village of Sauget,
    55
    PCB at 258; Olin Corp.,
    53 PCB at 291.
    Second is the existence
    of other factors relating to the petitioner’s diligence and
    efforts at compliance:
    A principal consideration in the granting of
    retroactive relief is a showing that the petitioner has
    diligently sought relief and has made good faith
    efforts at achieving compliance.
    Deere
    & Co.
    v.
    EPA, No. PCB 88-22,
    92 PCB 91,
    94
    (Sept.
    8,
    1988)
    (citations omitted).
    The Board has located only one case in which it granted
    retroactive variance relief without some recitation of
    unavoidable, special,
    or extraordinary circumstances that
    inidicate timeliness of the filing for relief.
    That was the
    variance granted Modine immediately prior to this requested
    variance, and in that proceeding the Agency recommended that the
    variance commence on the date of filing of the petition.
    See
    Nodine Manufacturing Co.,
    84 PCB at 739—40.
    In that predecessor
    to this present proceeding,
    the Board stated:
    The Board finds this matter to be a difficult
    call.
    The long time that this matter has been extant,
    both in its present and previous incarnations,
    compounded by the repeated delays in bringing this
    matter to resolution,
    suggest that some of the hardship
    asserted by Modine is self—imposed.
    Moreover, the
    Board is displeased with a request for a variance which
    has a term,
    but for a few days, which is after the
    fact.
    While the Board allows that there may be
    circumstances where the latter condition might validly
    arise,
    it also believes that after—the—fact grants of
    variance are generally inconsistent with the intent of
    variance relief as enunciated by the Environmental
    Protection Act.
    At the minimum,
    it is not the intent
    124—166

    11
    of a variance to legitimatize past failure to comply
    with rules and regulations.
    In considering the entirety of this matter, the
    Board finds that in such a close decision the
    recommendation of the Agency to grant the requested
    variance carries special weight.
    Modine Manufacturing Co.,
    84 PCB at 739-40 (retroactive
    to date of filing).
    The present variance proceeding is essentially an extension
    of the prior Modine Manufacturing Co. proceeding quoted above,
    with some minor differences.
    Again the Agency recommends a grant
    of variance, but it expressly recommends that the variance take
    effect on the date of this Order.
    In addition to the parameters
    involved in the prior proceeding,
    fluoride and zinc are involved
    here.
    Here, Nodine has achieved compliance prior to the date of
    this order,
    in major part as a result of the R87-36 site-specific
    rulemaking.
    Through the suing of variance proceedings and two
    site-specific rulemakings,
    Modine has sought relief; and
    through the R87-36 site-specific rule and various plant and
    process changes, Modine has already achieved compliance.
    However, Modine nowhere recites any special circumstances
    that would justify full retroactive relief, and Modine nowhere
    explains its delay in filing this present proceeding to the
    extent it requests an extension of variance.
    The filing of R87—
    36 prior to the termination of the PCB 85-154 variance is
    insufficient because it is unrealistic to expect any site-
    specific rule to issue within 76 days.
    A recitation of arbitrary
    and unreasonable hardship is necessary to any grant of a
    variance.
    Therefore,
    an arbitrary and unreasonable hardship
    cannot also constitute a “special circumstance” that would
    justify retroactive relief.
    Otherwise, all variances would
    simply apply retroactively upon request.
    For the foregoing reasons, the Board has two options:
    1.
    Grant relief retroactive to 120 days after the date Modine
    filed the petition for variance; or
    12
    ~g
    In
    re
    Site—Specific
    Limitation
    for
    the
    Modine
    Manufacturing Co.,
    No.
    R87—37,
    Modine Manufacturing Co.
    v.
    EPA,
    No. PCB 85-154,
    84 PCB 735
    (Dec.
    22,
    1987);
    l’lodine Manufacturing
    Co.
    v.
    EPA,
    No.
    PCB
    82—ill,
    58 PCB
    207
    (May
    29,
    1984);
    Modine
    Manufacturing
    Co.
    v.
    EPA,
    No.
    PCB 79—112,
    47 PCB
    519
    (Aug.
    18,
    1982)
    (dismissed); In re Modine Manufacturing Co. Petition to Amend
    Chapter
    3
    Regulations,
    No.
    R79—8,
    46
    PCB
    247
    (Apr.
    29,
    1982)
    (dismissed); Modine Manufacturing Co. v. EPA, No. PCB 74-14, 14 PCB
    169
    (Oct.
    17,
    1974)
    (Order on rehearing).
    124—167

    12
    2.
    Deny relief by dismissing this proceeding because the
    requested termination dates are already past.
    The Board favors the first option.
    However, Modine filed the
    initial petition on January 25,
    1988,
    and it subsequently amended
    the petition four times--the final time on August 9,
    1990.
    The
    filing of an amended petition restarts the time-clock
    for the
    purposes of Section 38(a).
    ~g
    City of South Beloit, No. PCB 86-
    113,
    76 PCB 368
    (Mar.
    19,
    1987); Mobil Oil Co.
    v. EPA, No. PCB
    84—37,
    60 PCB 41
    (Sept.
    6,
    1984).
    This means that the choice of
    inception dates could range from Nay 24,
    1988 to December 6,
    1990.
    In considering which date to use as an inception date for
    the grant of variance in this proceeding,
    the Board again
    considers the history of this proceeding.
    The Board notes that
    since the filing of the initial petition, Nodine has revised its
    plant operations and pursued R87—36 to achieve compliance.
    Modine did not wait until Board resolution of this matter to take
    actions directed towards compliance.
    Further, Nodine continued
    to revise its request and plant actions until the Agency finally
    agreed to recommend a grant of variance.
    As stated by Modine in
    its pleadings:
    Nodine has filed its variance request
    .
    .
    .
    so that
    1’lodine could come into full compliance with the Board’s
    regulations.
    The length of time it has taken Modine to
    reach this point is not the result of misuse, but has
    resulted form Modine’s continuing efforts to find a
    compliance alternative.
    Nodine’s Reply Brief at
    2
    (filed September 1,
    1989).
    For the foregoing reasons, the Board finds that the amended
    petitions filed throughout this proceeding have served a useful
    purpose.
    The Board will not penalize Modine for filing the
    amended petitions that served this purpose of ending the
    controversy in this proceeding.
    The Board further observes that
    Modine has used the time during the pendency of this proceeding
    to seek relief and to achieve compliance.
    These “special circum-
    stances” would justify the Board using the date of filing of the
    initial petition to determine the inception date for the
    variance.
    As
    noted earlier in this Opinion and Order,
    the initial
    petition for variance included requests for relief as to ammonia—
    nitrogen, un—ionized ammonia, biochemical oxygen demand, and
    total suspended solids.
    The third amendment of May 24,
    1989
    added fluoride, and the fourth amendment of August
    9, 1990 added
    zinc.
    Therefore,
    as to ammonia—nitrogen, un—ionized ammonia,
    biochemical oxygen demand, and total suspended solids, the Board
    124—168

    13
    will grant the variance retroactive to 120 days after the filing
    of the initial petition—-i.e.,
    to May 24,
    1988.
    As to fluoride,
    the Board will grant the variance retroactive to 120 days after
    the filing of the third amended petition--i.e.,
    to September 21,
    1989.
    For ~e
    reasons stated below,
    the Board will deny relief
    as to zinc.
    Zinc Variance Relief
    In the fourth amended petition for variance, Modine asserts
    that it had eight zinc exceedances during the period of January,
    1984 through July,
    1990.
    Modine states that it believes these
    the result of the location of its sampler, which tends to collect
    unrepresentative samples for zinc.
    Modine intended to relocate
    this sampler by October
    1,
    1990.
    It did not believe that its
    effluent had an adverse impact on the receiving stream.
    Modine
    requested the variance to allow it to construct a new sampling
    point.
    Fourth Amended Variance Petition at 5—6.
    The zinc issue first appeared in the August
    9,
    1990 Fourth
    Amended Variance Petition.
    No request as to zinc appears in any
    of the prior petitions.
    See generally Petition for Variance
    (filed Jan.
    25,
    1988); Amended Petition for Variance (filed Mar.
    17,
    1988); Second Amended Petition for Variance (filed May 10,
    1988); Third Amended Variance Petition (filed may 24,
    1989).
    Modine did not make one at hearing.
    See generally Transcript of
    Hearing
    (held May 25,
    1989).
    Further, Modine made no assertions
    as to zinc in its post—hearing filings.
    See generally Modine’s
    Post Hearing Comment (filed June 2,
    1989); Modine’s Post Hearing
    Brief
    (filed July 21,
    1989); Modine’s Reply Brief (filed Sept.
    1,
    1989).
    In fact, the only factual basis given in support of the
    requested relief is contained in the request in the Fourth
    Amended Variance Petition.
    ~
    Fourth Amended Variance Petition
    at 5-6.
    The Agency requests that the Board deny the requested
    relief.
    The Agency concedes that Modine’s explanation of the
    zinc exceedances
    is probably true, but states that Modine
    presents the results from no test to prove this theory, and the
    Agency asserts that there are other alternatives Modine could
    apply in the interim before the requested October
    1,
    1990
    expiration date.
    The Agency goes on to assert the following:
    Modine)
    is undertaking a project that will correct a
    newly—discovered violation,
    and
    .
    .
    .
    the easiest “fix”
    is to include this new problem in the variance
    13
    The
    Board
    notes
    that an
    independent
    basis
    exists
    for
    denying relief as to zinc:
    120 days after August
    9, 1990 is later
    than the requested termination date of October
    1, 1990.
    Dismissal
    of the request as moot would be appropriate.
    124—169

    14
    proceeding already underway.
    However, the Agency and
    the Board have a responsibility to protect the
    integrity of the variance system.
    Variances should not
    be granted simply because it is expedient and
    convenient.
    Modine has demonstrated no hardship
    regarding other solutions to its zinc problem.
    Modine
    has not even proposed a limit for zinc for the duration
    of the variance.
    Agency’s Amended Recommendation at 3—4
    (filed Sept.
    12,
    1990; emphasis added).
    The Board observes that Modine’s August 9,
    1990-requested
    zinc variance would have expired October
    1,
    1990
    if granted.
    •The
    request apparently was for an inception date of December 31,
    1987.’~ Thus, Modine seeks relief for possible past violations
    as of this date.
    Modine’s assertions in favor of a zinc variance are
    essentially this:
    we have discovered apparent violations of
    Section 304.124(a)
    in our monitoring numbers; we believe that
    there was no violation, rather there was a problem in the
    monitoring numbers themselves; and we have a means of complying
    within 53 days; therefore,
    give us a variance from this
    provision.
    Nowhere does Modine aver that compliance with the
    zinc standard would impose an arbitrary and unreasonable
    hardship, and nowhere does Modine cite facts of record that would
    support such a finding; Modine simply requests the variance.
    In light of these facts, the Board must hold that Nodine has
    failed to present adequate proof that immediate compliance would
    impose an arbitrary and unreasonable hardship for the purposes of
    Section 35(a).
    Ill. Rev.
    Stat.
    1989 ch.
    111½, par. 1035(a).
    Nodine has therefore failed to justify a grant
    ?~
    variance, and
    the Board will deny variance relief as to zinc. ~
    ORDER
    The Board hereby grants a variance to Modine Manufacturing Co.
    from the following:
    14
    See supra note 2.
    15
    The Board notes that should an enforcement action arise,
    Modine
    has
    itself
    observed
    that
    proof
    of
    an
    “arbitrary
    and
    unreasonable hardship” can stand as a defense to that action.
    See
    Amended Petition for Variance at 5; Iii. Rev.
    Stat. 1989 ch. 111½,
    par.
    1031(c).
    For the purposes of this proceeding,
    Nodine has
    failed to submit a record that could justify the finding necessary
    to result in a variance for zinc.
    124—170

    15
    A.
    the ammonia nitrogen
    (NH3-N)
    standards of 35 Ill.
    Adm. Code
    302.212,
    304.105, and 304.301 for the period from Nay 24,
    1988 through October
    1,
    1990;
    B.
    the un-ionized Ammonia standard of 35
    Ill. Adm. Code
    302.212(b)
    for the period from May 24,
    1988 through October
    1,
    1990;
    C.
    the biochemical oxygen demand
    (BOD5)
    standard of 35 Ill.
    Adm. Code 304.120(c)
    for the period from Nay 24,
    1988
    through May 31,
    1990;
    D.
    the total suspended solids
    (TSS)
    standard of
    35 Ill. Adm.
    Code 304.120(c)
    for the period from May 24,
    1988 through May
    31,
    1990;
    and
    E.
    the fluoride standards of 35
    Ill. Adm. Code 302.208, and
    304.105 for the period from September 21,
    1989 until May 31,
    1990.
    During the term of this variance, Modine Manufacturing Co. shall
    discharge no effluent that exceeds the following limitations:
    4.4 mg/l
    (NH3-N)
    (daily maximum)
    May through
    September
    3.2 mg/l
    (NH3-N)
    (monthly average) May through
    September
    4.4 mg/l
    (NH3-N)
    (daily maximum)
    October through
    April
    4.4 mg/l
    (NH3-N)
    (monthly average)
    October through
    April
    0.08 mg/i un—ionized ammonia
    60 mg/l
    (BOD5)
    (daily maximum)
    May through
    September
    25 nig/l
    (BOD5)
    (monthly average)
    May through
    September
    70 mg/i
    (BOD5)
    (daily maximum)
    October through
    April
    35 mg/l
    (BOD5)
    (monthly average)
    October through
    April
    30 mg/l
    (TSS)
    (daily maximum)
    12 mg/l
    (TSS)
    (monthly average)
    5.6 mg/l fluoride
    (daily maximum)
    4.0 mg/l fluoride (monthly average)
    124—171

    16
    Modine Manufacturing Co.
    shall execute a Certificate of
    Acceptance and return an executed copy of that document to the
    Agency addressed as follows:
    Kathleen C.
    Bassi
    Division of Legal Counsel
    Illinois Environmental Protection Agency
    2200 Churchill Road
    P.O. Box 19276
    Springfield, Illinois
    62794—9276
    Nodine Manufacturing Co. shall return the executed copy to the
    Agency within 45 days of the date of this Opinion and Order.
    The
    Certificate of Acceptance shall take the following form:
    CERTIFICATION
    I
    (We), ____________________________________
    hereby accept and agree to be bound by all terms and
    conditions of the Order of the Pollution Control Board in
    PCB 88—25, dated July 25,
    1991.
    Petitioner
    Authorized Agent
    Title
    Date
    APPEAL OF FINAL BOARD ORDERS
    Section 41 of the Environmental Protection Act, Ill. Rev.
    Stat.
    1989 ch.
    111½, par. 1041, provides for appeal of final
    Orders of the Board within 35 days.
    The Rules of the Supreme
    Court of Illinois establish filing requirements.
    IT IS SO ORDERED.
    124—172

    17
    J.D. Dumelle concurred.
    I, Dorothy M. Gunn,
    Clerk of the Illinois Pollution Control
    Board, do hereby certify that the above
    pinion and Order was
    adopted on the
    ~
    day of ____________________________
    1991,
    by a vote of
    ________.
    ~
    ,,~.
    /I~
    Dorothy N. G4n,
    Clerk
    Illinois Poi~tionControl Board
    124—173

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