ILLINOIS POLLUTION CONTROL BOARD
    May 20, 1999
    IN THE MATTER OF:
    )
    )
    PETITION OF SUN CHEMICAL
    ) AS 99-4
    CORPORATION FOR ADJUSTED
    ) (Adjusted Standard - Air)
    STANDARD FROM 35 ILL. ADM.
    )
    CODE 218.626(b)
    )
    CYNTHIA A. FAUR AND LORENA NEAL, OF SONNESCHEIN, NATH &
    ROSENTHAL, APPEARED ON BEHALF OF PETITIONER; and
    DEBORAH WILLIAMS APPEARED ON BEHALF OF THE ILLINOIS
    ENVIRONMENTAL PROTECTION AGENCY.
    OPINION AND ORDER OF THE BOARD (by R.C. Flemal):
    This matter comes before the Board upon a “Petition for Adjusted Standard” (Pet.)
    filed on October 22, 1998, by Sun Chemical Corporation (Sun). Sun requests an adjusted
    standard from 35 Ill. Adm. Code 218.626(b), as it applies to 17
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    resin storage tanks at its
    Northlake, Cook County, Illinois facility (facility).
    The Board’s responsibility in this matter arises from the Environmental Protection Act
    (Act) (415 ILCS 5/1
    et seq.
    (1996)). The Board is charged to “determine, define and
    implement the environmental control standards applicable in the State of Illinois” (415 ILCS
    5/5(b) (1996)), and to “grant . . . an adjusted standard for persons who can justify such an
    adjustment” (415 ILCS 5/28.1(a) (1996)). More generally, the Board’s responsibility in this
    matter is based on the checks and balances integral to Illinois environmental governance: the
    Board is charged with the rulemaking and principal adjudicatory functions, and the Illinois
    Environmental Protection Agency (Agency) is responsible for carrying out the principal
    administrative duties.
    The Act also provides that “[t]he Agency shall participate in [adjusted standard]
    proceedings.” 415 ILCS 5/28.1(d)(3) (1996). On January 29, 1999, the Agency filed a
    response (Resp.) and recommended that the instant requested adjusted standard be granted with
    conditions. Resp. at 16-17.
    1
     
    Sun originally requested an adjusted standard for 19 resin storage tanks; however, following
    submittal of the initial petition for adjusted standard, Sun brought 2 of the 19 tanks into
    compliance with the regulations at issue. In the amended petition for adjusted standard dated
    April 13, 1999, Sun modified its petition for adjusted standard to include only the remaining
    17 resin storage tanks.

    2
    Based upon the record before it and upon review of the factors involved in the
    consideration of adjusted standards, the Board finds that Sun has demonstrated that granting an
    adjusted standard in the instant matter is warranted. The Board will accordingly grant the
    adjusted standard, subject to conditions as discussed herein.
    PROCEDURAL HISTORY
    This matter initially came before the Board upon a petition for adjusted standard filed
    by Sun on August 20, 1998. The Board assigned docket number AS 99-2 to that petition. On
    October 1, 1998, the Board issued an order noting that Sun had not filed proof of publication,
    as required under Section 28.1(d)(1) of the Act.
    2
    On October 15, 1998, the Board issued a
    second order in which it dismissed the AS 99-2 petition, noting that it lacked jurisdiction to
    hear the case because the statutory and procedural deadlines for filing the notice of publication
    had by then lapsed. See
    In re
    Petition of Sun Chemical Corporation for an Adjusted Standard
    from 35 Ill. Adm. Code 218.626(b) (October 15, 1998), AS 99-2.
    On October 22, 1998, Sun filed the instant petition, which the Board docketed as AS
    99-4. Sun provided proof of publication by filing of November 12, 1998.
    The Agency filed its response to the petition on January 29, 1999. Although the
    Agency recommended granting of the adjusted standard with conditions different from those in
    Sun’s October 22, 1998 petition, it also represented that Sun was in agreement with the
    Agency's proposed conditions (Resp. at 5). On April 13, 1999, Sun filed an amended petition
    (Amended Pet.), in which it provided various updated facts.
    A hearing was held in this matter on April 15, 1999, at the Board's hearing room in
    Chicago before Hearing Officer John Knittle. Sun affirmed at the hearing that it wished to
    modify its requested adjusted standard to conform with the that recommended by the Agency
    in the Agency's January 29, 1999 response. Tr. at 11-12. The proposed adjusted standard as
    found in the Agency's January 29, 1999 response accordingly constitutes the request now
    before the Board.
    NATURE OF THE FACILITY AND DISCHARGE
    Sun's facility, located at 135 West Lake Street, Northlake, Cook County, Illinois,
    manufactures printing inks. Pet. at 4. The facility was built in 1962. Pet. at 4. Most of the
    plant's operations are batch operations involving the mixing or blending of resins, solvents,
    pigments, and varnishes to make finished inks and bases. Pet. at 4.
    2
     
    Section 28.1(d)(1) of the Act provides that "petitioner shall submit to the Board proof that,
    within 14 days after the filing of the petition, it has published notice of the filing of the
    petition by advertisement in a newspaper of general circulation in the area likely to be affected
    . . . ." 415 ILCS 5/28.1(d)(1) (1996).

    3
    The ink-making process results in the emission of some volatile organic material
    (VOM). Pet at 4. Because the facility is located in the Chicago ozone nonattainment area,
    and because the volume of VOMs emitted at the facility is above the applicability threshold,
    the facility is subject to the organic emissions standards and limitations found at 35 Ill. Adm.
    Code 218. One of these provisions is that tanks that are used to store volatile organic liquids
    (VOL), and which have a storage capacity greater than 946 L (250 gal), are required pursuant
    to 35 Ill. Adm. Code 218.626(b) to be fitted with a submerged fill pipe or a bottom fill pipe.
    Fill pipes are the conduits through which liquids enter the tanks.
    At issue are 17 liquid storage tanks in the facility located in close proximity with one
    another, some only a few feet apart. Amended Pet. at 1-2. The liquid storage tanks meet the
    946 L capacity criterion, but are not fitted with either submerged fill pipes or bottom fill
    pipes. Pet. at 5. Rather, each of the tanks is currently filled via an overhead fill pipe, which
    allows for some splashing during loading and hence emissions of vapors to the atmosphere.
    Pet. at 5. Sun states that there is no odor nuisance as a result of this process and the Agency
    does not disagree with this characterization. Pet. at 10; Resp. at 9-10. Sun requests that it be
    granted an adjusted standard to allow continued use of the overhead fill pipe systems.
    In 1997, Sun reported emitting 63 tons of VOM from its total facility. Pet at 4.
    However, only 0.0203 tons of the 63 tons of VOM were from the overhead fill pipe systems
    for the tanks at issue. Pet at 4. Except for the overhead fill pipe systems, the tanks are
    enclosed, and thus not subject to emissions except at filling. Pet. at 5. All the liquids now
    stored, or intended to be stored, in the tanks have a vapor pressure significantly less than 0.5
    pounds per square inch absolute (psia). Most of the materials stored in the tanks have vapor
    pressures less than 0.005 psia. Pet. at 6. Materials with psia’s this low have low volatility,
    and hence are not subject to rapid vaporization and easy escape of vapors to the surrounding
    air. Pet. at 11.
    STATUTORY AND REGULATORY FRAMEWORK
    In determining whether to grant an adjusted standard, Section 28.1 of the Act (415
    ILCS 5/28.1 (1996)) requires the Board to determine whether a petitioner has presented
    adequate proof that: factors relating to the petitioner are substantially and significantly
    different from the factors relied upon by the Board in adopting the general regulations
    applicable to that petition; the existence of these factors justifies an adjusted standard; the
    requested standard will not result in environmental or health effects substantially more adverse
    than the effects considered by the Board in adopting the rule of general applicability; and the
    adjusted standard is consistent with federal law. 415 ILCS 5/28.1(c) (1996). In granting an
    adjusted standard, the Board may impose such conditions as may be necessary to accomplish
    the purposes of the Act. 415 ILCS 5/28.1(a) (1996).
    On July 25, 1991, in rulemaking docket R91-7 (see In the Matter of: RACT
    Deficiencies in the Chicago Area: Amendments to Part 215 and the Addition of Part 218 (July
    25, 1991), R91-7), the Board adopted rules to satisfy deficiencies noted by the United States
    Environmental Protection Agency (USEPA) under the Federal Implementation Plan (FIP) (55

    4
    Fed. Reg. 26814, June 29, 1990). Resp. at 3. The Board added 35 Ill. Adm. Code 218,
    Subpart AA, which was taken directly from the FIP and applies specifically to paint and ink
    manufacturers. In the Matter of: RACT Deficiencies in the Chicago Area: Amendments to
    Part 215 and the Addition of Part 218, PCB 91-7, slip op. at 3; Resp. at 3.
    Subpart AA applied to the facility on January 24, 1994, when the threshold
    applicability of the reasonably available control technology (RACT) regulations were lowered
    to include facilities that have the potential to emit (PTE) 25 tons or more of VOM per year.
    See RACT for Major Sources Emitting VOM in the Chicago Ozone Nonattainment Area: 25
    Tons (Amendments to 35 Ill. Adm. Code Parts 211 and 218) (January 6, 1994), R93-14; 35
    Ill. Adm. Code 218.620(b); Resp. at 3. Before 1994, the general Volatile Organic Liquid
    (VOL) storage tank rules applied to Sun’s tanks, but the adoption of amendments in docket
    R93-14 mandated that Sun also come into compliance with 35 Ill. Adm. Code 218.626(b),
    which is part of 35 Ill. Adm. Code 218, Subpart AA, by March 15, 1995. Resp. at 3.
    Sun requests an adjusted standard that would allow it to operate the existing 17 resin
    storage tanks at the facility in compliance with the general VOL storage tank requirements in
    35 Ill. Adm. Code 218.122, instead of the storage tank requirements contained in 35 Ill. Adm.
    Code 218.626(b), which provides that:
    Stationary VOL storage containers with a capacity greater than 946 l
    (250 gal) shall be equipped with a submerged-fill pipe or bottom fill.
    These controls shall be operated at all times. An alternative
    control system can be allowed only if approved by the Agency
    and approved by the USEPA as a SIP revision.
    The general VOL storage tank requirements in 35 Ill. Adm. Code 218.122 provide that:
    a)
    No person shall cause or allow the discharge of more than 3.6 kg/hr (8
    lbs/hr) of organic material into the atmosphere during the loading of any
    organic material from the aggregate loading pipes of any loading area
    having through-put of greater than 151 cubic meters per day (40,000
    gal/day) into any railroad tank car, tank truck or trailer unless such
    loading area is equipped with submerged loading pipes or a device that is
    equally effective in controlling emissions and is approved by the Agency
    according to the provisions of 35 Ill. Adm. Code 201, and further
    processed consistent with Section 218.108.
    b)
    No person shall cause or allow the loading of any organic material into
    any stationary tank having a storage capacity of greater than 946 l (250
    gal), unless such tank is equipped with a permanent submerged loading
    pipe or an equivalent device approved by the Agency according to the
    provisions of 35 Ill. Adm. Code 201, and further processed consistent
    with Section 218.108 of this Part, or unless such tank is a pressure tank
    as described in Section 218.121(a) of this Part or is fitted with a

    5
    recovery system as described in Section 218.121(b)(2) of this Part.
    c)
    Exception: If no odor nuisance exists the limitations of this Section shall
    only apply to the loading of VOL with a vapor pressure of 17.24 kPa
    (2.5 psia) or greater at 294.3ºK (70ºF).
    As in Section 218.626(b), Sun states that Section 218.122 requires storage tanks with a
    capacity of more than 250 gallons to be equipped with a submerged fill loading pipe or an
    equivalent control device. Pet. at 9. Unlike Section 218.626(b), however, Sun argues that
    Section 218.122 contains an exception for tanks used to store material for which there is no
    odor nuisance and the vapor pressure is less than 2.5 psia. Pet. at 9. Sun argues that the
    material stored in Sun’s resin storage tanks satisfy both the exemption criteria, and Sun is
    currently in compliance with this rule. Pet. at 9.
    DISCUSSION
    Substantially Different Factors
    Sun believes that the factors relating to its facility are substantially and significantly
    different from those factors relied upon by the Board in adopting 35 Ill. Adm. Code
    218.626(b) in docket R91-7. Pet. at 14. The R91-7 rulemaking did not contemplate the
    applicability of the storage tank requirements contained in Section 218.626(b) to operations,
    such as Sun’s, that use low vapor pressure materials. Pet. at 14. Sun maintains that use of
    these materials can have a dramatic impact on VOM emissions. Pet. at 14. Sun also argues
    that the R91-7 rulemaking did not consider the impact of the requirements of Section
    218.626(b) on existing sources for which the costs to comply with the control requirements
    were more than a few thousand dollars per ton of VOM reduced. Pet. at 14. Therefore, Sun
    alleges the factors relating to its facility are substantially and significantly different from those
    factors contemplated by the Board in adopting Section 218.626(b).
    The Agency agrees that the factors relating to control of VOM from Sun’s 17 resin
    storage tanks are substantially and significantly different than those factors considered in
    adoption of Section 218.626(b). Resp. at 11.
    Justification
    Sun believes an adjusted standard is necessary because its tank operations are different
    from the operations of other ink manufacturers. Pet. at 11. First, Sun’s VOM emissions are
    small. Pet. at 11. Second, the tanks were installed in 1962, before the emission control
    equipment on tanks existed; and with only a few feet separating each tank, installing control
    equipment would be difficult and costly. Pet. at 11. Additionally, the substances stored in the
    tanks are thick and many are not pumpable at normal temperatures, so Sun would have to
    install bottom fill rather than submerged fill pipes.
    3
    Pet. at 7-8.
    3
    The raw materials would clog a submerged fill pipe and require frequent cleaning. Pet. at 8.

    6
    Sun maintains that bottom filling pipes on these tanks are more difficult and expensive
    because they require fully cleaning out the tanks and cutting into the tanks. Pet. at 8. Sun
    estimates that the cost to control the 0.0203 tons of emissions will be $1,803,946 per ton of
    VOM removed. Amended Pet. at 7. Sun notes that this amount is over 360 times the cost
    considered reasonable by the Agency and the Board in adopting regulations in dockets R91-7
    and R93-14. Amended Pet. at 7. For these reasons, Sun believes an adjusted standard is
    justified. Pet. at 12.
    The Agency agrees that some of the materials stored in the tanks are unpumpable at
    normal temperatures, which would require Sun to install bottom fill pipes to comply with
    Section 218.626(b). Resp. at 7. The Agency also agrees that the close proximity of the tanks
    makes installation of bottom or submerged fill pipes more difficult and expensive. Resp. at 7.
    The Agency cost figures for installing such pipes range from $285,960 to $298,510. Resp. at
    8. Since the emissions of the uncontrolled tanks is currently 0.0203 tons per year, the Agency
    estimates that the cost per ton of VOM emissions reduced by compliance with Section
    218.626(b) is $1,452,338.31 per ton. Resp. at 8. The Agency agrees that Sun would have to
    spend more than any cost that the USEPA, the Agency, or the Board considered reasonable for
    the control of VOM in the adoption of control requirements in dockets R91-7 and R93-14.
    Resp. at 11.
    Environmental Effect
    Sun asserts there would only be a small difference in the amount of VOM emissions
    from the storage tanks if it complied with Section 218.626(b) rather than Section 218.122.
    Pet. at 10. Sun notes that in 1997, only 0.0203 tons of VOM emissions, or 0.036% of Sun’s
    total VOM emissions were attributed to the tanks. Pet. at 10.
    The Agency argues that Section 218.626 was intended to control the emissions from
    tanks at facilities like Sun. Resp. at 13. The Agency acknowledges, however, that Section
    218.626 does not contain an exemption for the storage of low pressure VOL, although the
    vapor pressure of the liquids stored in a given VOL storage tank impacts the amount of
    emissions released from those tanks. Resp. at 13. Therefore, the Agency has imposed a
    condition on its recommendation of the adjusted standard, that Sun be required to store in the
    tanks only liquids with a vapor pressure of 0.5 psia or less on its uncontrolled storage tanks.
    Resp. at 13. The Agency contends that a 0.5 psia limit may result in Sun having fewer
    emissions than a facility that has installed submerged or bottom fill pipes, but stores higher
    vapor pressure liquids. Resp. at 13. The Agency believes that placing this condition on the
    adjusted standard will prevent any environmental harm. Resp. at 13.
    Consistency with Federal Law
    Sun maintains that the requested variance is consistent with applicable federal law.
    Specifically, Sun argues that Section 218.626 is consistent with the federal Clean Air Act.
    Pet. at 12. Sun notes that the Agency will be required to submit any adjustment, such as the

    7
    one requested by Sun, to the USEPA as a revision to the Illinois State Implementation Plan.
    Pet. at 12-13.
    In its response, the Agency noted that, on June 1, 1998, the USEPA agreed that this
    adjusted standard was reasonable, so long as a condition was placed in the adjusted standard
    which limited the vapor pressure in Sun’s storage tanks to no more than 0.5 psia. Resp. at 4.
    CONCLUSION
    Based on its review of the record in this matter, the Board finds that granting the
    requested adjusted standard is warranted. This conclusion is based on the statutory factors, set
    forth at Section 28.1 of the Act, involved in the Board’s consideration of adjusted standards as
    they apply to the instant case.
    The Board gives particular weight to the parties’ arguments that the factors relating to
    Sun’s facility are substantially and significantly different from those factors relied upon by the
    Board in adopting 35 Ill. Adm. Code 218.626(b). The Board agrees that complying with
    Section 218.626(b) would impose a great economic hardship on Sun. The Board appreciates
    Sun’s arguments that the expenses it would incur to bring the 17 tanks into compliance is
    greater than the cost considered reasonable for control of VOM in the adoption of control
    requirements in dockets R91-7 and R93-14.
    The Board is also persuaded that Sun’s storage of only low vapor pressure liquids in its
    17 uncontrolled storage tanks will result in fewer emissions than a facility that has installed
    submerged or bottom fill pipes, but stores higher volatility VOL. The existence of the above-
    mentioned factors justify the requested adjusted standard.
    This opinion constitutes the Board’s findings of fact and conclusions of law in this
    matter.
    ORDER
    Sun Chemical Corporation (Sun) is hereby granted an adjusted standard, under which
    the control requirements of 35 Ill. Adm. Code 218.626(b) shall not apply to the 17 storage
    tanks at Sun’s Northlake, Cook County, Illinois, facility, identified as tanks no. 26, 27, 35,
    36, 37, 42, 43, 44, 47, 48, 49, 53, 54, 55, 59, 60, and 67 in Sun’s October 22, 1998 petition
    and in the Illinois Environmental Protection Agency’s January 29, 1999 response. This grant
    of an adjusted standard is subject to the following conditions:
    1.
    The adjusted standard will remain in effect so long as:
    a.
    no odor nuisance exists at the Sun’s Northlake facility, and
    b.
    the vapor pressures of materials stored in the 17 identified tanks
    remain less than 0.5 psia at 70 degrees Fahrenheit.

    8
    2.
    All sections of 35 Ill. Adm. Code 218, Subpart AA, Paint and Ink
    Manufacturing, except as explicitly provided for herein, continue to apply to
    Sun.
    3.
    Any existing or new storage tanks not explicitly listed within this
    adjusted standard order remain subject to the control requirements of 35 Ill.
    Adm. Code 218.626(b).
    4.
    Sun shall maintain all records necessary to establish that the vapor
    pressures of the materials stored in the 17 identified tanks are less than 0.5 psia
    at 70 degrees Fahrenheit. The records shall be maintained at Sun’s Northlake,
    Cook County, Illinois, facility, and each record shall be retained at the facility
    for a period of no less than 3 years.
    IT IS SO ORDERED.
    Section 41 of the Environmental Protection Act (415 ILCS 5/41 (1996)) provides for
    the appeal of final Board orders to the Illinois Appellate Court within 35 days of service of this
    order. Illinois Supreme Court Rule 335 establishes such filing requirements. See 172 Ill. 2d
    R. 335; see also 35 Ill. Adm. Code 101.246, Motions for Reconsideration.
    I, Dorothy M. Gunn, Clerk of the Illinois Pollution Control Board, hereby certify that
    the above opinion and order was adopted on the 20th day of May 1999 by a vote of 7-0.
    Dorothy M. Gunn, Clerk
    Illinois Pollution Control Board

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