ILLINOIS POLLUTION CONTROL BOARD
    September
    15,
    1993
    IN THE MATTER OF:
    )
    R93—l0
    RCRA
    SUBTITLE D AMENDMENTS
    )
    (Identical
    in Substance Rule)
    (AMENDMENTS TO 35 ILL. ADM.
    )
    CODE PART 810,
    PART 811,
    )
    AND
    PART
    814)
    )
    Adopted Rule.
    Final Order.
    OPINION OF THE BOARD
    (by J. Anderson):
    SUMMARY OF TODAY’S ACTION’
    The Board today adopts,
    in accordance with Section 7.2 of
    the Environmental Protection Act
    (Act), amendments to the Board’s
    existing nonhazardous solid waste landfill regulations that are
    identical
    in substance to USEPA’s Subtitle D regulations
    contained in 40 CFR 258
    (1992)
    (Subtitle D regulations or
    Subtitle
    D)2.
    USEPA’s Subtitle D regulations implement Sections
    4004 and 4010 of the Resource Conservation and Recovery Act
    (RCRA)
    of 1976
    (P.L. 94—580,
    codified as 42 U.S.C. para.
    6944
    &
    6950)
    ‘In the Illinois Environmental Protection Act,
    the Board
    is
    charged
    to
    “determine,
    define
    and
    implement
    the
    environmental
    control standards
    applicable
    in the State
    of Illinois”
    (415 ILCS
    5/5(b)).
    More generally, the Board’s rulemaking charge is based on
    the
    system
    of
    checks
    and
    balances
    integral
    to
    Illinois
    environmental governance:
    the Board bears responsibility for the
    rulemaking
    and
    principal
    adjudicatory
    functions,
    whereas
    the
    Illinois Environmental Protection Agency
    (Agency)
    is responsible
    for carrying out the principal administrative duties.
    The latter’s
    duties
    include
    administering
    any
    regulation
    that may stem
    from
    today’s action.
    2The
    Board
    expresses
    its
    appreciation
    to
    Anand
    Rao
    of
    the
    Board’s
    technical
    support
    staff
    for
    his
    special
    assistance
    in
    drafting the opinion and crafting the order so as to blend the RCRA
    Subtitle D language into the Board’s existing landfill regulations.
    The Board also appreciates the assistance of Board attorney Michael
    NcCambridge
    for
    his
    assistance
    in
    drafting
    and
    formatting
    the
    opinion and order, particularly
    as regards financial assurance.

    2
    The Board adopts these identical
    in substance amendments as
    mandated pursuant to Section 22.40(a) of the Act3, which provides
    in pertinent part:
    Where the federal regulations authorize the State to
    adopt alternative standards,
    schedules,
    or procedures
    to the standards,
    schedules,
    or procedures contained in
    the federal regulations,
    the Board may
    ....
    retain
    existing Board rules that establish alternative
    standards,
    schedules,
    or procedures that are not
    inconsistent with the federal regulations.
    The instant amendments are contained in the Board’s nonhazardous
    solid waste landfill regulations at 35 Ill.
    AdIn. Code
    810,
    811,
    and 814.
    The text of the adopted rules appears
    in a separate
    order,
    adopted this same day.
    As is customary in identical
    in
    substance rulemakings,
    the Board is providing for a post-adoption
    comment period of 15 days,
    to allow for review, particularly by
    those involved in the federal authorization process, prior to
    filing with the Secretary of State.
    Section 22.40(a) provides that there be quick adoption of
    the federal Subtitle D landfill regulations,
    and that Title VII
    of the Act and Section
    5 of the Administrative Procedure Act
    (APA)
    (5 ILCS 100/5-1
    et seq.)
    shall not apply.
    Because this
    rulemaking
    is not subject to Section
    5 of the APA,
    it is not
    subject to First Notice and Second Notice review by the Joint
    Committee on Administrative Rules
    (JCAR)4.
    The Board
    nevertheless appreciates JCAR’s comments during the 45-day public
    comment period
    in any identical
    in substance proceeding.
    Today’s amendments correspond to USEPA’s regulatory program
    concerning municipal solid waste landfills
    (NSWLFs).
    MSWLFs fall
    under the putrescible waste landfill category of the Board
    regulations.
    The Board’s landfill regulations also regulate
    chemical and inert waste landfills, which are not affected by
    these amendments.
    The~adoptedamendments prescribe additional
    requirements
    for MSWLF units concerning location,
    facility
    3This past
    July,
    the
    Illinois General Assembly,
    in HB
    300,
    adopted a number of amendments, among them the addition to the Act
    of new Section
    22.40.
    These amendments were signed
    into law on
    September
    13,
    1993 as Public Act 88—496,
    effective immediately.
    4The
    Board notes that non-identical
    in substance
    amendments
    cannot be considered
    in this rulemaking.
    Such amendments must be
    adopted
    in
    a
    “regular’~ rulemaking proceeding
    in
    accordance with
    Title
    VII
    of
    the
    Act
    and
    Section
    5
    of
    the
    APA.
    See
    Section
    22.40(b).
    Identical
    in substance rulemaking constraints are more
    fully discussed in this opinion.

    3
    design,
    operation,
    groundwater monitoring,
    closure and
    postclosure care,
    and financial assurance.
    BACKGROUND
    Prior
    to discussing the substantive aspects of today’s
    regulations,
    the regulatory history and the approach taken by the
    Board in adopting the federal rules is discussed below.
    RCRA Subtitle
    D Program
    On October
    9,
    1991,
    the USEPA promulgated the final
    municipal solid waste landfill regulations pursuant to the
    requirements of the Resource Conservation and Recovery Act of
    1976
    (P.L.
    94—580, codified as 42 U.S.C
    §5
    6944
    &
    6950)
    (Subtitle
    D landfill regulations).
    Section 4005(c) (1) of RCRA requires all
    RCP.A
    authorized states,
    including Illinois,
    to adopt and
    implement a permit program or other system of approval that
    complies with the performance standards of the Subtitle D
    regulations.
    The Subtitle D regulations provide flexibility to
    the states in choosing any design standards that will secure
    compliance with the federal rule’s performance standards.
    Within
    two years of the effective date of the Subtitle D regulations,
    i.e. October
    9,
    1993~, the states are required to seek a
    determination by the USEPA that their state programs comply with
    the minimum standards of the Subtitle D regulations.
    The Subtitle D regulations prescribe minimum standards for
    municipal solid waste landfill
    (MSWLF)
    units including:
    location
    restrictions; facility design and operating criteria; and
    requirements for groundwater monitoring,
    corrective action,
    closure and
    postclosure care,
    and financial assurance.
    The
    regulations establish differing requirements for existing and new
    units.
    Regulatory Format
    The Board has chosen to weave the Subtitle D amendments
    directly into its existing landfill regulations,
    rather than
    treating the Subtitle D amendments as
    a separate “add—on” with
    back-and-forth cross-references.
    This chosen approach most
    clearly identifies both
    a) where the existing, not inconsistent,
    5The USEPA has proposed amendments at 40 CFR 258
    (58 FR 40568,
    July
    28,
    1993)
    that extend the compliance dates for certain small
    landfills
    and
    also
    delay
    the
    effective
    date
    of
    the
    financial
    assurance
    requirements.
    The
    implications
    of
    the
    proposed
    extensions
    on the Board’s instant regulations are discussed later
    in this opinion.

    4
    Board requirements apply to MSWLF units,
    and b) where the new
    federal requirements apply to MSWLF units.
    We note that the comprehensive standards in the Board’s
    existing nonhazardous solid waste landfill regulations address
    all elements covered by the Subtitle D regulations.
    Moreover,
    extensive changes are not required,
    in that the existing Board
    landfill regulations in large measure are not inconsistent with
    the Subtitle
    D requirements.
    The Board’s regulations are found
    at 35
    Ill.
    Adm.
    Code 807 and 810 through 815.
    Among the
    significant requirements are:
    Interrelated systems of checks and balances to control
    transport of contaminants, including a stringent groundwater
    assessment program;
    Liners of compacted earth, or compacted earth and
    geomembrane;
    Leachate collection systems;
    State of the art leachate treatment and disposal
    requirements;
    Landfill gas monitoring and xnanagement~
    Detailed construction and operating oversight requirements;
    Postclosure care for as many years as
    is necessary at each
    landfill to demonstrate that contamination is no longer a
    problem;
    A groundwater monitoring system designed to quickly detect
    potential problems, and to trigger prompt remedial action
    where indicated;
    Built-in provisions to avoid sensitive areas ranging from
    airports to nature preserves;
    More intensive permitting and reporting requirements; and
    Phase-out of existing landfills timed to the level of
    compliance with the new regulations.
    Finally, we believe that this approach will minimize
    administrative and interpretive difficulties for the Illinois
    Environmental Protection Agency
    (Agency)
    and the regulated
    community alike.

    5
    Identical
    in Substance Constraints
    As
    it does with all
    of its determinations where identical in
    substance rulemakings have been mandated,
    the Board has followed
    the provisions
    in Section 7.2 of the Act, which articulate what
    constitutes “identical in substance”.
    Such mandated rulemakings,
    as is the case here,
    usually flow from a State legislative
    statement of intent and directive to do what
    is necessary to
    secure federal approval of
    a program.
    The RCRA Subtitle D
    legislative statement
    (as well as that for
    RCRA
    Subtitle
    C)
    is
    found
    in Section 20(a)
    of the Act.
    We emphasize that the Board is not authorized in this type
    of proceeding to review the substantive merits p~ ~
    of the
    federal regulations or, for that matter,
    of the existing Board
    regulations.
    All of the Board’s earlier regulations adopted on
    the merits pursuant to its “regular” procedures under Title VII
    of the Act and Section
    5 of the APA
    -
    including those that are
    more stringent
    remain,
    as long as there
    is not
    a problem of
    inconsistency.
    In like manner,
    the Board would not use
    a
    “regular” rulemaking to itself review the merits of federally—
    derived provisions,
    where merits have already been pre—determined
    by the USEPA and the Board
    is mandated to adopt them anyway.
    We
    do,
    however, attempt to amend the federal/state language for
    clarity of intent and compatibility with Illinois administrative
    law.
    Several of the commenters either asked the Board to visit
    the merits of the federal rules themselves or to amend more
    stringent Illinois requirements.
    Those comments requested that
    the Board improve the regulations for one technical reason or
    another,
    but they did not provide the stringency-consistency
    rationale for such a change.
    The Board has declined to make
    these changes.
    Without the justification that the pre-existing
    Illinois regulation is inconsistent with the federal regulations,
    we lack the authority to amend the rules using the identical
    in
    substance procedures.
    In examining these comments, however, we noted that several
    of the comments might potentially produce useful changes in the
    existing Illinois landfill rules.
    Since such changes are
    certainly within the scope of our general rulemaking authority
    under Title VII of the Act, we would suggest that any person
    wanting to have the Board make those changes should file an
    appropriate rulemaking petition in a separate docket.
    In that
    way the Board may use the Title VII rulemaking procedure for
    making those changes.
    Equivalency Determination and the Agency’s Application
    At the outset,
    the Board notes that it has attempted to make
    the instant amendments consistent with the equivalency

    6
    determination made by the Agency as part of its application to
    the USEPA.
    The Agency filed
    its solid waste management permit
    program application with the USEPA for determination of adequacy,
    pursuant to Section 4005(c)
    of Subtitle D of RCRA,
    on March 31,
    1993
    (PC #1).
    A significant portion of the application consists
    of a demonstration of compliance of the Board’s existing landfill
    regulations with the Subtitle D regulations.
    The demonstration
    includes a detailed section—by—section evaluation of the Subtitle
    D regulations and the corresponding requirements in the Board’s
    existing nonhazardous solid waste landfill regulations.
    The
    Agency’s analysis shows that the Board’s existing regulations are
    substantially equivalent to the Subtitle D regulations contained
    in 40 CFR 258.
    However,
    the analysis identified a number of
    deficiencies in the Board’s existing nonhazardous solid waste
    landfill regulations.
    The deficiencies were minor in nature,
    except for a few items such as interpretation of existing
    units/lateral expansions,
    corrective action procedures,
    and
    financial assurance requirements.
    The Board addressed the deficiencies identified by the
    Agency in the proposal for public comments adopted on May 20,
    1993.
    Since then,
    the Agency’s comments
    (PC #9) indicate that
    other deficiencies have come to light upon the USEPA’s review of
    the Agency’s application.
    The Board has made changes
    in today’s
    regulations to address these shortcomings.
    As noted in the May 20 proposed opinion,
    the Board relied
    significantly on the Agency’s application in this rulemaking.
    The Board does not discuss the details of the equivalency
    determination in this opinion.
    Instead, the Board has
    incorporated the Agency’s application by reference.
    We note that
    the Agency’s application was marked as Public Comment #1
    (PC #1).
    The Board will limit
    its discussion to the major issues raised by
    the public comments regarding the proposed amendments,
    and the
    actual changes in today’s rules.
    FEDERAL ACTIONS COVERED BY THIS
    RULEMAKING
    The
    RCRA
    Subtitle
    D regulations were drawn from 40 CFR 258
    (1992)
    (Solid waste disposal facility criteria).
    The following
    USEPA actions are covered in this rulemaking:
    56
    Fed. Reg.
    50978,
    October 9,
    1991
    (Subtitle D
    Regulations)
    57 Fed.
    Reg.
    28626,
    June 26,
    1992
    (Subtitle D
    Regulations:
    corrections)
    58 Fed. Reg.
    ___________________
    (Extension of
    Compliance dates)

    7
    PERMITTING SCHEME
    Under the instant regulations,
    the MSWLFs will be regulated
    as
    a subset of the putrescible waste landfill category.
    The
    NSWLF units will be subject to putrescible waste landfill
    requirements,
    and the additional requirements adopted pursuant to
    this rulemaking.
    The framework for regulating the nonhazardous
    landfills will remain the same,
    i.e.
    new MSWLFs will be subject
    to the requirements of Part 811 and existing MSWLFs and lateral
    expansions will be subject to the requirements of Part 814.
    Further, MSWLF units will be subject to the informational
    requirements of Part 812 and the permitting requirements of Part
    813.
    The Subtitle D regulations require the State to implement a
    permit program to regulate all MSWLFs,
    including on-site
    facilities, which were exempted from the landfill permit program
    pursuant to Section 21
    (d)
    of the Act.
    The legislative
    amendments
    (HB 300)
    at Sections 21(d),
    21(t),
    22.42, and 22.43 of
    the Act provide for the implementation of the permit requirements
    applicable to NSWLFs.
    The statutory changes are reflected in
    proposed amendments to Part 814 relating to the permit
    requirements for MSWLF units.
    The permitting procedures under
    the instant proposal are explained below.
    Permitting Requirements for New MSWLF Units
    In the case of new MSWLFs, the owner or operator, prior to
    waste disposal, will have to comply with all the requirements of
    Part 811 and obtain a permit in accordance with Parts 812 and
    813.
    Permitting Requirements for Existing MSWLF Units
    The implementation of the permit program in the case of
    existing units
    is more complicated due to the existing transition
    rules
    of Part 814.
    The Board’s existing regulations at Sections
    814.104 allow the owners or operators of existing facilities
    until September,
    1994 to file an application for a permit
    modification,
    unless the Agency notifies the owners or operators
    to file the application at an earlier date.
    Such facilities are
    allowed to operate under their Part 807 permit until the approval
    of the permit modifications under Part 814.
    Thus,
    a facility may
    continue operation under a Part 807 permit until September 1994
    and still
    be in compliance with Part 814.
    In order to bring existing MSWLFs under compliance with the
    permitting requirements of the Subtitle D Regulations before
    October
    9,
    1993,
    the Act was amended to include
    a new section
    (Section 22.42)
    dealing with the interim permit requirements for
    existing MSWLF units.
    Section 22.42 requires the owners or
    operators of all existing MSWLF units to submit
    a written

    8
    application to the Agency for a permit
    (if no permit has been
    issued
    for the MSWLF unit under Section
    21(d)
    of the Act6)
    or a
    permit modification
    (if a permit has been issued under Section
    21(d)
    of the Act.
    Such applications must be filed within 30 days
    of the effective date of Public Act 88-496,
    or September 1,
    1993,
    whichever occurs
    first.
    The owners or operators who file such
    applications are deemed to have an interim permit on October
    9,
    1993 or 30 days after the Agency receives the application,
    whichever occurs first.
    Section 22.42 allows the Agency to impose conditions to
    ensure compliance with the requirements of the MSWLF interim
    rules of Section 22.41 of the Act.
    The interim regulations are
    essentially a combination of the most stringent requirements of
    the Subtitle D Regulations and the Board regulations, which
    ensures the compliance of the state program with the Subtitle D
    Regulations.
    The Board notes that these interim rules will take
    effect on the effective date of Public Act 88-496.
    The statutory
    interim “rules” will expire and be replaced by the Board
    regulations when:
    (i)
    the State receives full approval of its
    MSWLF program by the USEPA; and
    (ii)
    the rules adopted by the
    Board
    in the instant rulemaking have been reviewed and authorized
    by the USEPA.
    Also,
    according to Section 22.42,
    no interim permit or
    interim permit modification is deemed issued if the Agency
    provides a written notification that the application is
    incomplete or the applicant must file an application for a
    lateral expansion.
    The Board notes that the deemed issued
    permits are intended mainly to ensure compliance with the
    Subtitle D Regulations.
    The owners or operators of existing
    MSWLF units are still required to submit applications for
    significant modification of their permits in accordance with
    Section 814.104 by September
    9,
    1994.
    Finally,
    Section 22.42 sets forth the terms for the
    termination of the interim permits.
    Permitting Requirements for Lateral Expansions
    Section 21(t)
    of the Act prohibits a lateral expansion of a
    MSWLF unit on or after October
    9,
    1993 without a permit
    modification granted by the Agency.
    The statutes do not
    prescribe any specific permitting requirements for lat-eral
    expansions other than granting authority to the Agency to issue
    such permit modifications
    (Section 22.43 of the Act).
    Also,
    the
    Board notes that the interim permit requirements of Section 22.42
    do not apply to lateral expansions.
    Since for the most part,
    6Refers
    to
    the
    landfills
    that have
    been operating
    without
    permits under prior exemptions.

    9
    lateral expansions are treated as new MSWLF units under the
    Subtitle D Regulations, the Board has proposed permit
    modification requirements at Section 814.109.
    Section 814.109 requires owners or operators
    of MSWLFs
    seeking lateral expansions after October
    9,
    1993 to file an
    application for a permit modification with the Agency.
    The
    permit application must comply with the requirements and
    procedures of Parts 811 and 812.
    The owners or operators may
    begin lateral expansion of
    a MSWLF unit only upon the Agency’s
    approval of the permit modification pursuant to the procedures of
    Part 813.
    PUBLIC COMMENTS
    The Board started the “public comment” phase of this
    rulemaking by adopting the proposal for public comments on May
    20,
    1993.
    The following public comments
    (PC)
    relating to the
    instant rulemaking were received by the Board:
    PC #1
    Illinois Environmental Protection Agency’s solid
    waste management permit program application
    submitted to the USEPA for determination of
    adequacy, pursuant to Section 4005(c)
    of Subtitle
    D of RCRA on March 31,
    1993
    PC #2
    Department of Commerce and Community Affairs
    PC #3
    Browning—Ferris Industries,
    Midwest Region
    (BFI)
    PC #4
    Village of Winnetka
    (Winnetka)
    PC #5
    Waste Management,
    Inc.
    (WMI)
    PC
    #6
    Envirometrics
    & Statistics Limited
    (EnviroStat),
    on behalf
    of Laidlaw Waste Systems
    PC #7
    Secretary of State
    (Code Unit)
    PC #8
    USEPA, Region
    5,
    Solid Waste Section (USEPA)
    PC #9
    Illinois Environmental Protection Agency7 (Agency)
    PC #10
    Agency’s revised application submitted to the
    USEPA on August 27,
    1993 for
    a Determination of
    RCRA Subtitle D Program Adequacy.
    The Board notes that seven of the ten public comments
    (PC #3
    through #9) were filed
    in response to the Board’s proposal for
    public comments.
    The Board extends its appreciation to all
    commenters for their thoughtful contributions to today’s
    ~ All of
    the public comments were
    filed
    prior
    to August
    2,
    1993,
    the
    general
    close
    of
    the
    comment
    period,
    except
    for the
    Agency’s filing on August 16, 1993.
    The Agency had been granted a
    filing extension by Board order
    of August
    5,
    1993
    in response to
    the Agency’s plea that its comment had been delayed by the need for
    its personnel to respond to issues arising out of the record summer
    floods
    of
    1993.

    10
    considerations of the law that underpins Subtitle D to
    recommendations concerning the form and content of specific
    provisions of the Illinois solid waste regulations.
    The Board has reviewed in detail all of the public comments.
    In responding to these, the Board today makes a number of changes
    in the amendments as originally presented in the proposal for
    public comment.
    First, the Board will discuss the major issues
    relating to the compliance dates and the existing NSWLF
    standards.
    All other changes are discussed under the following
    Section-by—Section commentary.
    There are also
    a number of changes offered in the public
    comments that we cannot address
    in this identical in substance
    rulemaking,
    as explained earlier in this opinion.
    The largest
    class of these consists of proposals that would modify the
    existing landfill regulations in manners not identical
    in
    substance to Subtitle D.
    MAJOR ISSUES
    USEPA’s Proposed Extension of Compliance Dates
    The Agency and Winnetka called to the Board’s attention the
    USEPA’s proposal to amend several Subtitle D compliance dates
    contained in 40 CFR 258
    (1992).
    (PC #9 at
    2 and PC #4 at
    1.)
    The Board notes that the USEPA’s proposed rule was published in
    the Federal Register on July 28,
    1993
    (58 FR 40568).
    The USEPA’s
    proposed amendments that affect the instant regulations include
    the following:
    a)
    Extension of the effective date of the Subtitle D
    regulations for a period of six months from October
    9,
    1993 to April
    9,
    1994 for certain small MSWLF units,
    if
    certain specific conditions are mets.
    b)
    Extension of the effective date of the financial
    assurance requirements from April
    9,
    1994 to April
    9,
    1995 for all NSWLF units.
    The Agency states that,
    if the USEPA’s proposal becomes
    final,
    as proposed,
    the problem of accommodating the federal
    revisions in the state program will be complicated by the
    ~The conditions are:
    (1) the unit receives less than 100 tons
    of per day
    of waste for disposal;
    (ii)
    the unit
    is
    located in
    a
    state that has submitted an application for program approval to the
    USEPA by October
    9,
    1993 or
    is located on tribal lands; and
    (iii)
    the unit is not currently listed on the Superfund National Priority
    List
    (NPL).

    11
    provisions of the of the State legislation
    (HB 300),
    now Public
    Act 88-496.
    (PC #9
    at 2—3.)
    The Agency notes that several
    provisions of Public Act 88-496 contain compliance dates
    reflecting the dates contained in the existing Part 40 CFR 258
    (1992)
    The Board adopts USEPA’s proposed revision of the compliance
    dates
    in today’s rules
    in anticipation of the need to be
    identical in substance to the USEPA’s regulations.
    In this
    regard, the Board notes that Section 22.40(a) of the Act mandates
    the Board to adopt regulations that are identical in substance to
    the federal regulations or amendments of such regulations
    promulgated by the USEPA to implement Sections 4004 and 4010 of
    RCRA as those regulations relate to the MSWLF program.
    The Board
    anticipates that the USEPA’s proposal will become effective
    before the end of the post-adoption comment period of the instant
    regulations.
    If not,
    or if there are any changes
    in the final
    USEPA version, the Board will make appropriate changes to its
    regulations before filing the same with the Secretary of State.
    The Board notes that its actions concerning the compliance
    dates appear consistent with the intent of the legislature to
    mirror the federal mandates only as necessary to receive federal
    authorization.
    The Board believes that the existing statutory
    compliance dates were not intended to cause the state program to
    be more stringent than the federal program would require9.
    9We
    note
    that
    the
    legislative
    debate
    in
    the
    House
    before
    passage of what was then HB 299
    (later HB 300)
    indicates that the
    intent was that the legislative compliance requirements were added
    strictly to respond to the Subtitle
    D federal mandate; e.g.,
    the
    following statements were made by Representative Novak:
    “....
    it’s going to be concerned with Subtitle D, which
    is
    a
    new
    federal
    mandate
    concerning
    the
    solid
    waste
    management
    industry.
    We’re
    going
    to
    be working
    out
    language to
    the
    agreement as soon
    as we get over to the Senate,
    we want to
    keep it alive”
    (State of Illinois, 88th General Assembly, House of Representatives
    transcription debate, August 23,
    1993)
    Also, during the Senate debate on then—HB 300, sponsor Senator
    Mahar specifically addressed why the October
    9,
    1993 deadline was
    included:
    “Federal
    Subtitle
    D
    requirements
    will
    become
    effective
    on
    October the 9th of this year. Facilities in states that do not
    have federally approved program by October the 9th must comply
    with the inflexible federal program;...”

    12
    Applicable Standards for Existing Units and Lateral Expansions
    The Agency’s comments express concern regarding the proposed
    requirements for existing MSWLF units and lateral expansions
    under Part 814.
    Specifically, the Agency’s concerns relate to
    the permit requirements and the applicable standards.
    The Agency
    notes that the proposed amendment to Section 814.102 would
    require all existing MSWLF units and lateral expansions to come
    into compliance with the applic~.blestandards of Part 814 by
    October
    9,
    1993.
    (PC #9 at 36.)
    The Agency contends that
    Section 814.102 would require existing facilities to comply not
    only with the Subtitle D criteria by October 9,
    1993,
    but also
    with the more stringent Illinois requirements that would not have
    been required until the completion of significant modifications
    in accordance with Section 8l4.l04’°. The Agency states that the
    proposed compliance requirements under Section 814.102 would
    place a substantially greater burden than necessary on existing
    MSWLF units operating under a permit issued pursuant to Part 807.
    (PC #9 at 37.)
    The Agency’s comments also voice concern regarding the
    proposed permit modification requirements for lateral expansion
    at Section 814.108.
    The Agency notes that the regulations must
    provide for the continued recognition of lateral expansion since
    applications for lateral expansions may be submitted after the
    expiration of the statutory interim period.
    However, the Agency
    maintains that it is unnecessary for such applications to be
    reviewed under the existing significant modification procedures,
    as proposed by the Board.
    The Agency suggests that the proposed
    review procedure be replaced with
    a much more limited review,
    primarily of the design criteria.
    (PC #9 at 45.)
    Finally, the
    Agency suggests the addition of a new section containing
    standards that are applicable to lateral expansions at units
    operating under permits issued pursuant to Part 807 until such
    permits are modified in accordance with Part 814.
    (PC #9 at 45-
    46.)
    The Board has made
    a number of changes
    in today’s
    regulations under Section 814.Subpart A in order to address the
    Agency’s concerns and clarify the applicable requirements for the
    existing MSWLF units and lateral expansions.
    The Board has
    (State of Illinois,
    88th General Assembly, Regular Session Senate
    Transcript
    (first proof), July 13,
    1993.)
    ~
    Board’s
    nonhazardous
    landfill
    regulations
    require
    existing landfills operating under permits issued pursuant to Part
    807 to come into compliance with Part 814 standards by applying for
    a
    significant
    modification
    of
    the
    Part
    807
    permits.
    The
    regulations
    allow
    such landfills until
    September
    1994
    to file
    an
    application for
    significant modification.

    13
    amended Section 814.101 to clarify the applicable standards for
    existing NSWLF units and lateral expansions based on the current
    status of such units
    in terms of their operating permits.
    An existing MSWLF unit operating under
    a permit modified
    pursuant to Part 814
    or an existing unit that is newly required
    to obtain a permit under Section
    21(d)
    of the Act is required to
    comply with the applicable standards of Subpart C or D of Part
    814, which include the additional requirements relating to
    existing MSWLF units and lateral expansions.
    Similarly, an
    existing unit operating under
    a permit issued pursuant to Part
    813
    is required to comply with the standards of Part 811,
    as
    amended in this rulemaking.
    An existing MSWLF unit operating
    under a permit issued pursuant Part 807
    is required to comply
    with the terms of its permit and the more stringent requirements
    of the Subtitle D regulations.
    The Subtitle D requirements applicable to the existing units
    operating under Part 807 permits are prescribed in an appendix to
    Part 814
    (Section 814.Appendix A).
    These requirements mirror the
    interim permit requirements
    (PC #10) specified by the Agency
    pursuant to Section 22.42
    of the Act.
    The Board chose this
    approach to address the existing MSWLF units operating under Part
    807 permits in order to maintain continuity with the Agency’s
    action during the interim period, which expires upon the approval
    of the instant regulations by the USEPA.
    Regarding the Agency’s concern relating to the review
    process of the permit modification applications, the Board notes
    that it is reluctant to prescribe any limited review criteria at
    this time.
    Further, the Agency’s comments do not provide
    adequate guidance to craft specific review criteria for permit
    modifications for lateral expansions.
    However,
    in today’s
    regulations the Board has amended the permit modification
    requirements for lateral expansions to clarify the informational
    requirements.
    The amended requirements are specified in section
    814.109
    (previously numbered as 814.108).
    Today’s amendments essentially require an owner or operator
    of an existing MSWLF unit seeking a lateral expansion to obtain a
    permit modification prior to such expansion.
    Section 814.109
    clearly specifies the informational requirements for a permit
    modification application based on the current status of the
    existing units
    in terms of their operating permits.
    Only
    information required to demonstrate compliance with the
    additional requirements prescribed for MSWLF would be required
    under the instant regulations.
    The Board envisions that the
    informational requirements
    for existing units operating under
    permits issued pursuant to Part 813 or Part 814 will be minimal,
    since most of the information would have been submitted to the
    Agency along with the application
    for a new permit or a
    significant modification of
    an existing permit.

    14
    Finally,
    the Board notes that the instant regulations under
    Part 814 include
    a new section that specifies the compliance
    dates for existing MSWLF units.
    As discussed above,
    the
    compliance dates specified in Section 814.107 reflect the revised
    effective dates proposed by the USEPA
    in the Federal Register
    published on July 28,
    1993.
    Agency or Board Action?
    The Board had requested comments regarding certain specific
    requirements applicable to MSWLF units that require Agency
    determination, as proposed.
    Specifically, the Board wanted to
    know whether the Agency determination required by subsections
    811.110(e)
    and
    (f), 811.111(d) (3), and 811.303(d) might be
    addressed through a variance,
    provisional variance,
    or an
    adjusted standard proceeding.
    These requirements specify
    conditions for extension of closure schedule, cover disturbance,
    and postclosure care period.
    The Agency has stated that the
    determinations identified by the Board are appropriate subjects
    for permit applications and review pursuant to Part 813, Subpart
    B.
    (PC #9 at
    2.)
    The Agency maintains that if an applicant
    disagrees with the Agency’s decision, the appeal mechanism is
    available for resolution.
    WMI’s comments also note that the
    Agency determination is more appropriate when it comes to
    extension of closure schedule and cover disturbance.
    However,
    regarding the reduction of postclosure care period itself,
    WMI
    states that the Board must make such decisions under an adjusted
    standard procedure due to the financial implications, and the
    need for consistent determination.
    (PC #5 at
    5.)
    The Board notes that its main concern regarding the
    determinations identified above is the lack of adequate guidance
    for the Agency to evaluate the required demonstrations.
    The
    Board notes that the federal Subtitle
    D criterion included in the
    above requirements
    is nebulous.
    Essentially, the federal
    language requires an owner or operator to demonstrate that the
    deviations from the applicable requirements relating to the
    closure requirements and postclosure care period are “sufficient
    to protect human health and environment.”
    However, the Board
    notes that it will retain the federal standard
    in the instant
    regulations without specifying any additional criteria,
    since
    today’s rulemaking involves an identical
    in substance regulation.
    Regarding the appropriate procedure for addressing changes~
    from the closure schedule and postclosure care period,
    the Board
    agrees,
    in part, with WMI’s comments.
    The Board believes that
    the implementation of closure schedule and cover disturbance
    during postclosure can be handled through permit modifications.
    However,
    regarding the postclosure care period, the Board
    concludes that an adjusted standard procedure must be used only
    if
    an operator seeks an over-all reduction of the postclosure

    15
    care periodH.
    The Board believes that reduction of individual
    elements of postclosure care monitoring requirements may be
    handled through permit modification.
    The Board notes that this
    approach ensures Board’s oversight in making decisions regarding
    the over-all postclosure activities of
    a MSWLF unit.
    At the same
    time,
    it allows the Agency to make determinations regarding the
    individual elements of postclosure care.
    In this regard, the
    Board notes that an Agency determination is appealable to the
    Board.
    The changes to Section 811.303 are discussed later under
    the Section-by-Section discussion.
    Groundwater Impact Assessment
    (Section 811.317)
    The Agency recommended the inclusion of allowable levels
    specified in 40 CFR 258.Table
    1 for certain constituents as the
    applicable standards for groundwater impact assessment.
    The
    Agency’s comments note that although the applicable groundwater
    quality standards in the Board’s existing regulations are at
    least as stringent as current MCLs,
    they are less stringent than
    the values of 40 CFR 258.Table
    1 for five constituents: barium;
    chromium (hexavalent); endrin; selenium; and 2,4,5—
    trichlorophenoxy acetic acid.
    (PC #9 at 4-5.)
    The Board notes that the federal regulations at 40 CFR
    258.40(a) prescribe a performance standard, which requires the
    liner design to ensure that the Table
    1
    levels’2 are not exceeded
    at the compliance point.
    This performance standard is similar to
    the groundwater impact assessment requirement at Section 811.317.
    The groundwater impact assessment requires an operator to utilize
    a groundwater contaminant transport model and show that the
    concentrations of all constituents of leachate are less than the
    applicable groundwater quality standards of Section 811.320 at
    the zone of attenuation~3(compliance point).
    The applicable groundwater quality standards are the
    background concentrations of the monitored constituents.
    “Over—all reduction of the postclosure care period involves
    the
    reduction
    of
    monitoring
    period
    relating
    to
    inspection
    and
    maintenance,
    leachate collection,
    gas monitoring,
    and groundwater
    monitoring.
    ~24OCFR 258.Table
    1 includes all those compounds for which the
    USEPA
    had
    established
    maximum contaminant
    levels
    (MCLs)
    as
    of
    October
    9,
    1991.
    ‘3The
    zone of attenuation
    is
    a volume bounded by
    a vertical
    plane
    at the property boundary
    or
    100 feet from the edge
    of the
    unit,
    whichever is
    less,
    extending from the ground surface to the
    bottom of the uppermost aquifer and excluding the volume occupied
    by the waste.

    16
    Further,
    Section 811.320 requires the groundwater quality to be
    maintained at each constituent’s background concentrations at or
    beyond the zone of attenuation for
    a period of 100 years after
    closure of the last unit accepting waste within
    a landfill
    facility.
    The Section 811.320 standard
    is based on the concept
    of “nondegradation” and requires the application of statistical
    methods and procedures to ensure that increases above an
    established standard are shown to be statistically significant
    increases.
    The Board notes that
    it
    is not clear from the Agency’s
    comments as to why the Agency is referring to the Illinois
    standards as “MCLs,” and comparing the current MCLs with the 40
    CFR 258.Table
    1 values.
    (PC #9 at 4-5.)
    The “MCLs” are not the
    applicable standards under the Board’s existing landfill rules.
    Part 811 requires the applicable groundwater quality standards to
    be established on
    a site—specific basis based on the background
    concentrations of the monitored constituents.
    In this regard,
    the Board notes that the groundwater quality standards at 35
    Ill.
    Adin.
    Code 620.301(d)’4 recognize the nondegradation standards
    promulgated by the Board for landfill facilities.
    The Board notes that in evaluating the adequacy of the Board
    regulations, the Agency must consider the existing nondegradation
    standards based on the background concentrations,
    and not the
    state NCLs.
    In this regard,
    the Board believes that the existing
    standards applicable to landfills at Section 811.320 are more
    stringent: than the federal levels specified in 40 CFR258.Table
    1,
    since the nondegradation standard does not permit
    contamination up to an MCL.
    Also,
    the Board notes that it has no
    authority under the identical in substance mandate to change or
    modify more stringent state requirements.
    In view of this,
    the
    Board will not make any changes to include the Table
    1 values for
    specific constituents,
    as suggested by the Agency.
    Financial Assurance Requirements
    The Agency submitted numerous comments on the financial
    assurance requirements.
    A number of the Agency comments prompted
    a number of changes to the text of the proposal for public
    comment.
    Other of the Agency comments relate to changes the
    Agency desires that are beyond the scope of this rulemaking.
    Since the structure of the landfill regulations and the nature of
    the Agency’s comments would otherwise lead to burdensome
    repetition if discussed on
    a Section-by-Section basis,
    the Board
    ‘4The groundwater quality standards under 35 Ill. Adm. Code 620
    prescribe
    numerical
    standards
    based
    on
    federal
    “MCLs”
    for
    the
    State’s groundwaters classified as potable resource groundwater or
    Class
    I groundwater.
    However,
    in the case of nonhazardous waste
    landfills,
    the more stringent nondegradation standard controls.

    17
    will deal with the comments on a topical basis before the
    Section—by-Section analysis.
    The first major group of Agency comments suggest
    incorporating corrective action into the financial assurance
    requirements.
    Key among these is that the Board failed to
    include revisions to various of the financial assurance forms of
    Appendices A through
    I
    in the proposal for public comment.
    The
    Board has made a number of revisions
    in the text based on these
    comments, but for various reasons,
    we have not followed all the
    Agency—recommended language.
    Prescribed Cost of Living Adjustments:
    The Agency recommended the addition at Section 811.701(c)
    of
    a prescribed format for owners and operators to adjust closure,
    post—closure care,
    and corrective action plan cost estimates for
    increases in the cost of living.
    Basically, the Agency would
    have the Board require the owner or operator to make the
    adjustments at a fixed time before the anniversary date of the
    establishment of the financial assurance instrument.
    The Agency
    would also have the Board impose a specific index for the
    adjustments.
    Section 258.71(a) (1) requires an owner or operator to
    “annually adjust the closure cost estimate for inflation”.
    Similarly, Section 258.72(a) (2) requires an adjustment for
    inflation to the postclosure care cost estimate and Section
    258.73(a) (1) requires such an adjustment to the corrective action
    cost estimate in similar terms.
    The Board followed the federal
    language at Sections 811.104(k) (2)
    and 811.705(d), requiring
    annual adjustments based on inflation.
    Essentially, the Agency-recommended provision adds
    requirements not included in the federal rules.
    Without
    addressing the merits of the Agency’s recommended language, the
    Board concludes that this suggestion is beyond the scope of this
    proceeding.
    Exclusion of
    MSWLF
    Cost Estimate from Reduction to Present
    Value:
    The Agency recommends that the Board exclude the cost
    estimates for MSWLF units from the Section 811.704(g) (2)
    provision that allows for a reduction of.the post—closure care
    estimate to present value.
    40 CFR 258.72 does not allow such
    a
    reduction to present value.
    Instead,
    section 258.72
    is
    structured in such a way that closure and the commencement of
    post—closure care
    is possible at any time during the operating
    life of the unit.
    The Agency
    is correct,
    and the Board has added
    “Except to a MSWLF unit” to the beginning of the subsection
    (g)
    preamble.

    18
    Submittal of Financial Assurance Estimates to the Agency:
    The Agency
    has requested that the Board amend Section
    811.704(k) (1)
    so that owner or operator must include any revision
    of the corrective action cost estimate in an application for
    significant modification and submit
    it to the Agency.
    The Agency
    states that the proposed provision that would require an owner or
    operator to notify the Agency that the estimate for corrective
    action has been placed
    in the operating record is insufficient.
    The Board followed the federal requirements in drafting the
    proposal for public comments.
    Sections 258.71(a),
    258.72(a),
    and
    258.73(a) require placement of the revised closure, post—closure
    care, and corrective action cost estimates in the operating
    record and notice of the placements to the state.
    The additional
    actions requested by the Agency go beyond the basic federal
    requirements, and the Agency has provided nothing that would help
    the Board conclude that they would not go beyond the scope of the
    proceeding.
    Requirements for Entities Providing Financial Assurance:
    The Agency notes that the federal regulations require at
    sections 258.74(a)(1),
    (c)(1),
    and
    (d)(l) that a person providing
    financial assurance by acting as trustee, issuing a letter of
    credit or issuing a policy of insurance must be regulated and
    examined by a federal or state agency.
    The original Illinois
    landfill regulations require at Section 811.710 that a person
    acting as a trustee be subject to examination under the Illinois
    Banking Act and comply with the Corporate Fiduciary Act.
    The
    rules require at Section 811.713(b)
    that a person issuing a
    letter of credit be regulated by the Commissioner of Banks and
    Trust Companies
    (under the Illinois Banking Act)
    and be insured
    by the Federal Deposit Insurance Corporation or the Federal
    Savings and Loan Insurance Corporation.
    Similarly,
    an insurer
    must be regulated under the Illinois Insurance Code.
    To the extent the Illinois regulations specify the persons
    who must regulate the trustee,
    issuer of a letter
    of credit, or
    the insurer, without more the Board perceives that the Illinois
    regulations go beyond the scope of the federal regulations.
    Without regard to the Agency’s assertions that most Illinois
    sites have provided financial assurance that does not comply with
    the requirement, the Board cannot amend these provisions
    in the
    way requested without a proposal from the Agency that would
    initiate
    a “regular” rulemaking on the merits.
    In examining the text of the financial assurance
    requirements to address these Agency comments,
    the Board observed
    a number of Illinois Administrative Code format corrections that
    are necessary.
    The Board corrects the citations at Sections
    811.710(b),
    811.711(b),
    811.712(b),
    811.713(b),
    and 811.714(b)
    to

    19
    include both the citations to the Illinois Revised Statutes and
    the Illinois Compiled Statutes.
    The Board repeats certain of the
    citations in second appearances
    in subsequent Sections because we
    believe this adds clarity and avoids back—searching the text to a
    previous Section for the citation.
    Examination of the text revealed another problem with the
    proposed text that the Agency did not mention in its comments.
    40 CFR 258.74(b) (1)
    very specifically requires that a person
    issuing a surety bond must be among those listed as acceptable
    sureties in U.S. Department of the Treasury Circular 570.
    The
    Board believes that we must add this more stringent minimum
    federal requirement to Sections 811.712(b)
    and 811.713(b).
    To
    avoid problems of incorporation by reference of Circular 570,
    the
    Board renders the requirement as approval as an acceptable
    surety.
    We indicate the fact that the Department of the Treasury
    lists the acceptable sureties in Circular 570.
    Addition of “Corrective Action” to Various Provisions:
    The Agency suggests that the Board add references to
    corrective action at various segments of the financial assurance
    provisions.
    We did so in many locations in the proposal for
    public comment.
    We now add such references at Sections
    811.710(h),
    811.711(e),
    811.712(e), and 811.713(e)
    for trusts,
    letters of credit and surety bonds.
    The federal rules allow each
    of these mechanisms for corrective action cost financial
    assurance.
    We did not similarly add such references as suggested
    at Sections 811.714 and 811.715 because careful examination of
    federal section 258.74(d)
    indicates that USEPA does not expressly
    allow insurance for corrective action cost financial assurance.
    The effect of many of these added references to corrective
    action is to provide for reimbursement to the Agency for the
    owner or operator’s failure to undertake and complete corrective
    action.
    The Agency proposed an alternative structure for these
    provisions, which essentially repeated in parallel the language
    for closure and post—closure care cost reimbursement, but the
    Board felt that a simpler structure was possible by merely adding
    these references without repeating blocks of very similar
    language.
    The Board has added the only condition not repeated,
    at Sections 811.711(e) (2) (E)
    ,
    811.712(e) (2) (E)
    ,
    and
    811.713(e) (2) (E) with a limitation that it applies only to
    corrective action.
    The Agency also recommended similar changes to Sections
    811.711(e) (1)
    and 811.712(e) (1)
    to clarify that the same bond is
    not required to provide for all of closure, post-closure care,
    and corrective action cost financial assurance,
    since the
    regulations allow for the use of multiple instruments.
    The Board
    did not use the Agency—suggested language for this clarification,
    but we did change these subsections
    in response to the comment by

    20
    adding
    “a corrective action” before “bond”
    in
    the
    instant
    regulations.
    Payment into the Landfill Closure and Post-Closure Fund:
    The Agency has recommended that the Board provide that all
    funds be made payable into the Closure and Post-Closure Fund,
    rather than to the Agency.
    The Agency recommends this change at
    Sections 811.711(h) (2),
    811.712(h) (2),
    and 811.713(h) (2).
    The
    Board has made this change in these
    locations.
    Further, we have
    made these changes where appropriate in the financial assurance
    forms, discussed below.
    Agency Authority to Enter into Contracts:
    The Agency has requested that the Board add language at
    Section 811.710(h)
    that gives the Agency the authority to enter
    into contracts for corrective action at a site.
    The Board does
    not add such a provision because any authority the Agency must
    possess to enter into contracts must derive from the statute.
    (See Section 4(s)
    of the Act.)
    Elimination of Surety Bond Guaranteeing Payment, Required
    Penal Sum in the Full Amount of the Current Cost Estimate,
    and Duplicate Language for Term of Bond:
    The Agency has requested that the Board eliminate the surety
    bond guaranteeing payment.
    The Agency asserts that a bond
    guaranteeing performance allows the surety to elect payment
    instead of performance.
    The Agency concludes that the bond
    guaranteeing payment is not necessary.
    Alternatively, the Agency
    recommends elimination of the references to the Appendix D and H
    forms for performance and surety bonds.
    This elimination would
    also negate these bonds.
    The Agency also recommends amendment of Sections 811.711(f),
    811.712(f),
    and 811.713(f)
    to eliminate the requirement that the
    penal sum of
    a bond or letter of credit be in the amount of the
    current cost estimate.
    The Agency states that the allowed
    conjunctive use of multiple financial assurance instruments
    supports this elimination.
    Thus,
    Illinois regulations could
    appear to require the bond in the full amount of the current cost
    estimate despite the existence of multiple financial assurance
    mechanisms.
    The Agency further comments that the Board should eliminate
    the language of Section 811.711(g) (3)
    ,
    relating to the required
    term of
    a bond,
    because
    it duplicates language of subsection
    (h) (1), which relates to release of the surety.
    (We note the
    dual function of the adjoining identical language.)
    The
    parallel, independent use of the same language without cross—
    reference
    is
    a state regulatory style issue.

    21
    The Board did not make these Agency—suggested amendments
    to Sections 811.711 and 811.712. These are beyond the scope of an
    identical in substance rulemaking.
    The merits of the Agency’s
    position on these issues can be addressed
    in
    a “regular”
    rulemaking.
    Date of Issuance and Name, Address,
    and Telephone Number of
    Issuing Institution for a Letter of Credit:
    The Agency suggested that the Board should revise the text
    proposed for Section 811.713(c) (2)
    so that the letter of credit
    must indicate the date of issuance and name,
    address,
    and
    telephone number of the issuing institution.
    Examination of 40
    CFR 258.74(c) (2)
    indicates that the date of issuance and name and
    address of the
    issuing institution are federally-required
    information.
    The Board has made these revisions.
    However, we do
    not similarly include the telephone number requirement because
    this would be a new additional state requirement.
    Agency—Suggested Minor Corrections:
    The Agency highlights that the Board did not substitute the
    appropriate state cross—reference for the federal cross
    references found in the source text at 40 CFR 258.73 (a) (2) and
    (a) (3).
    The Board has corrected these to reference “subsections
    (k)(5)
    and
    (k)(6)
    below” at Section 811.704(k) (3)
    and
    (k)(4).
    The Agency recommends that the Board change the phrase
    “closure,
    post—closure,
    an~
    corrective action” to “closure, post—
    closure, g~corrective action” at Section 811.706(b) and
    (b) (1).
    The Agency does not justify the change with any supporting
    statements.
    Examination of the context reveals that the
    provisions
    involved refer to the chosen financial assurance
    mechanisms collectively.
    Since,
    in the aggregate,
    the chosen
    mechanisms must collectively assure all of closure, post-closure,
    and corrective action,
    the Board does not follow the Agency
    recommendation.
    If the Agency’s concern is that the provision
    could imply that each instrument must cover all types of
    financial assurance, we direct attention to Section 811.707,
    which clearly allows the use of multiple mechanisms,
    with the use
    of
    “any or all of the mechanisms to provide for closure and
    postclosure care of the site or corrective action”.
    We note that
    the addition of
    “or corrective action”
    is an addition made by the
    Board.
    Financial Assurance Forms Revisions:
    The Board did not include proposed amendments to the
    financial assurance forms
    in the proposal for public comment.
    This was due to inadvertent oversight
    in the rush to rapidly
    assemble the proposal.
    The financial assurance forms are an
    integral portion
    of the financial assurance requirements, and the

    22
    amendments involve the same subject matter as the proposed
    amendments.
    Further,
    forms that conform with the federal
    requirements are necessary for federal authorization.
    For these
    reasons,
    the Board includes amendments to the forms
    in the
    adopted rule.
    The Agency submitted edited financial assurance forms as an
    appendix to its public comments.
    The Agency—recommended
    revisions to the forms correlate with the Agency’s
    recommendations as to the text of the rules.
    As with the rules
    text suggestions,
    the Board has accepted and made those Agency
    suggestions that are necessary to conform the forms to the
    federal regulations.
    Similarly, the Board has included other
    suggested changes that are not required by USEPA as elements of a
    state program.
    As for the regulatory text suggestions, the Board
    suggests that the Agency might wish to pursue these changes in a
    “regular” rulemaking.
    As with the regulatory revisions,
    the
    amendments are limited to the trust, surety, and letter of credit
    forms of Appendix
    A, Illustrations A,
    C,
    D,
    and E.
    The federal
    rules do not provide for insurance or self—insurance for
    corrective action financial assurance,
    so the Board does not
    include Illustrations
    F,
    G,
    and I.
    Further,
    the Board does not
    include Illustration H because the federal rules do not provide
    for a corporate guarantee or parent surety.
    Rather, the federal
    regulations require that the surety be a regulated entity.
    SECTION-BY-SECTION DESCRIPTION OF THE AMENDMENTS
    TO PARTS 810,
    811,
    AND
    814
    Part 810
    Definitions
    (Section 810.103)
    The Subtitle D amendments to Part 810 include the addition
    of the following statutory definitions relating to municipal
    solid waste landfill
    (MSWLF)
    units to Section 810.103:
    “Existing
    NSWLF unit”,
    “Household waste”,
    “Lateral expansion”,
    “Municipal
    solid waste landfill unit”
    or “MSWLF unit”,
    “New
    MSWLF unit”,
    and
    “Resource conservation and recovery Act”.
    These definitions are
    substantially similar to the definitions contained in 40 CFR
    258.2
    (1992).
    An “Existing MSWLF unit”
    is defined as any municipal solid
    waste landfill unit that has received household waste before
    October
    9,
    1993.
    This statutory definition does not provide any
    limitation on waste placement similar to the federal definition
    of “Existing MSWLF unit”.
    However,
    the intent of the Subtitle D
    Regulations
    is maintained by the modified statutory definition of
    “lateral expansion”.

    23
    A “Household waste”
    is defined as any solid waste
    (including
    garbage,
    trash,
    and sanitary waste
    in septic tanks) derived from
    households
    (including single and multiple residences, hotels and
    motels,
    bunkhouses,
    ranger stations, crew quarters, campgrounds,
    picnic grounds,
    and day—use recreation areas).
    A “lateral expansion”
    is defined as
    a horizontal expansion
    of the actual waste boundaries of an existing MSWLF unit
    occurring on or after October
    9,
    1993, where a horizontal
    expansion is considered as any area where solid waste
    is placed
    for the first time directly upon the bottom liner of the unit on
    or after october
    9,
    1993.
    According to this definition, the
    waste boundary is the actual foot-print of the waste and not the
    originally permitted area.
    Thus,
    any horizontal expansion beyond
    the actual foot-print of the waste on or after October
    9,
    1993
    will be considered as a lateral expansion, which is consistent
    with the USEPA’s interpretation.
    A “Municipal solid waste landfill unit” or “MSWLF unit”
    is
    defined as a contiguous area of land or an excavation that
    receives household waste,
    and that is not a land application,
    surface impoundment,
    injection well,
    or any pile of
    noncontainerized accumulations of solid,
    nonflowing waste that is
    used for treatment or storage.
    The definition notes that a MSWLF
    unit may receive other types of RCRA Subtitle D wastes,
    such as
    commercial solid waste, nonhazardous sludge,
    small quantity
    generator waste and industrial solid waste.
    Such
    a landfill may
    be publicly or privately owned or operated.
    A MSWLF unit may be
    a new MSWLF unit,
    an existing mswlf unit or a lateral expansion.
    A sanitary landfill
    is subject to regulation as a MSWLF if it
    receives household waste.
    “New MSWLF unit”
    is defined as any municipal solid waste
    landfill unit that receives household waste on or after october
    9,
    1993 for the first time.
    In addition to the above statutory definitions, the Board
    has the defined the term “owner”
    in Section 810.103 for purposes
    of clarity.
    The Board notes that the terms “owner” and
    “operator” have been used interchangeably, and sometimes together
    in various Sections
    of the existing landfill regulations at Parts
    810 through 815.
    However,
    in the Subtitle D Regulations, both
    the terms “owner” and “operator”
    are used together consistently.
    The Board notes that its intent has always been that the owner is
    the operator if there
    is no other person operating the disposal
    facility operator,
    as indicated by the definition of “owner” at
    35
    Ill.
    Adin.
    Code 807.104.
    Therefore,
    the definition of
    “owner”
    is included
    in order to avoid any confusion regarding the
    applicability of the regulations to NSWLF units and other
    nonhazardous solid waste landfills.
    The Board notes that this
    definition
    is essentially the same as the definition of “owner”
    found at
    35
    Ill. Adm Code 807.104.

    24
    “Owner”
    is defined as
    a person who has an interest, directly
    or indirectly,
    in
    land,
    including
    a leasehold interest,
    on which
    a person operates and maintains
    a solid waste disposal facility.
    Further, the “owner”
    is the “operator”
    if there
    is no other
    person who
    is operating and maintaining
    a solid waste disposal
    facility.
    Finally,
    the Subtitle D amendments include the statutory
    definition of RCRA, which means the Resource Conservation and
    Recovery Act of 1976
    (P.L.
    94—580,
    codified as 42 USC. §S 6901 et
    seq.),
    as amended.
    Incorporation by Reference
    (Section 810.104)
    The amendments to Section 810.104 includes the incorporation
    by reference to two additional documents.
    The first document
    is
    entitled “Test Methods
    for Evaluating Solid Waste,
    Physical/Chemical methods,
    EPA Publication SW—846”, which
    contains test methods for evaluating solid waste.
    The second
    document
    is
    a list of hazardous organic and inorganic
    constituents found at 40 CFR 258.Appendix II
    (1992).
    The Agency suggested that the federal regulations
    incorporated by reference under Section 810.104 be included as
    separate appendices to Part 811.
    (PC #9 at
    8.)
    In this regard,
    the Agency notes that it receives frequent complaints from the
    regulated community regarding the lack of availability of the
    referenced documents.
    The Board agrees with the Agency that
    including the federal incorporations in appendices to Part 811
    would assist the regulated community.
    However, the Board notes
    that it will not be able to make any changes in this proceeding
    regarding the incorporations at this time due to the limited time
    available.
    In this regard,
    the Board notes that a considerable
    amount
    of Board’s limited resources that would be needed to
    specifically list and proof the incorporated federal regulations,
    which include the names of over 300 chemical compounds along with
    the chemical abstract service
    (CAS)
    numbers,
    the analytical
    method numbers and the practical quantitation limits
    (PQLs).
    Part 811
    Purpose,
    Scope and Applicability
    (Section 811.101)
    The scope of the Board’s nonhazardous solid waste landfill
    regulations
    is significantly broader than the Subtitle
    D
    Regulations,
    since
    its scope
    is not limited to only MSWLF units.
    The Board’s existing regulations cover all existing and new
    landfills
    in the State that accept nonhazardous solid waste
    including wastes that are characterized as inert, putrescible and
    chemical waste.
    However,
    in order to incorporate the federal
    requirements
    in the State’s existing landfill program,
    the
    statutes created
    a new category
    of
    landfills, which is based on

    25
    the federal definition of municipal solid waste landfill
    (MSWLF)
    unit.
    Under the Board’s existing regulations, the MSWLF category
    is
    a subset of putrescible waste landfills.
    The amendments to Section 811.101 reflect the inclusion of
    MSWLF units under the Board’s existing landfill regulations.
    The
    amendment at Section 811.101(d)
    specifies that the standards
    applicable to new MSWLF units
    include:
    (i) the standards
    applicable to putrescible waste landfills under Part 811;
    and
    (ii)
    the standards adopted pursuant to this rulemaking, which are
    identical in substance to the Subtitle D Regulations.
    In
    addition, Section 811.101(d) (2)
    notes the inclusion of a new
    appendix to Part 811, which provides
    a section-by—section
    correlation between the federal MSWLF regulations and the Board’s
    nonhazardous solid waste landfill regulations.
    Operating Standards
    (Section 811.107)
    The Subtitle D landfill amendments add a ne~Section
    811.107(m)
    that prohibits the disposal of bulk or
    noncontainerized liquid waste in MSWLF units,
    except for the
    following exceptions:
    (i)
    household waste other than septic
    wastes; and
    (ii)
    leachate and gas condensate derived
    form
    the
    MSWLF unit where the unit is equipped with a composite liner and
    leachate collection system designed and constructed to maintain
    less than 30 centimeters of head above the liner.
    Subsection
    811.107(m), which is derived from 40 CFR 258.28
    (1992)
    also
    defines the terms “liquid wastes” and “gas condensate.”
    The Agency’s comments recommended the addition of a
    reference to Section 811.309 under the liquid restriction
    requirements proposed at Section 811.107(m)(1)(B).
    (PC #9 at 9.)
    Section 811.309 contains standards for leachate recycling systems
    and conditions for suspension of leachate collection.
    An
    examination of the Subtitle D regulations at
    40 CFR 258.28
    indicates that the liquid restriction requirements apply to
    leachate recycling systems.
    In view of this,
    the Board accepts
    the Agency’s suggestion. The instant regulations at Section
    81l.107(m(1)(B)
    includes a reference to Section 811.309.
    Closure and Postclosure Care
    (Sections 811.110 and 811.110)
    The instant regulations prescribe additional requirements
    for MSWLF units concerning closure and post closure care.
    The
    closure requirements for MSWLF units are specified at Sections
    811.110(e)
    through 811.110(h).
    Mainly,
    the amendments to closure
    requirements specify the deadlines for initiating and completing
    closure,
    and require
    a deed notation to be made regarding the
    property.
    An owner or operator
    is required to initiate closure within
    30 days of the final receipt of waste,
    but no later than one year

    26
    if the unit has remaining capacity and there
    is reasonable
    likelihood
    of receiving additional waste.
    The amendments allow
    the Agency to grant extensions beyond the 1—year deadlines
    if the
    owner or operator of the affected unit demonstrates that the unit
    does not pose a threat to human health and environment.
    The amendment at Section 811.110(f)
    requires the completion
    of closure within 180 days of beginning of closure.
    The Agency
    is allowed to grant extensions beyond the 180—day deadlines under
    limited circumstances.
    Section 811.110
    (g) requires the owner or operator, upon
    closure,
    to record a notation on deed to the property that
    notifies any potential buyer of the property that the land has
    been used as
    a landfill and that its use is restricted.
    The
    notation from the deed may be removed only if the owner or
    operator demonstrates that all wastes are removed from the
    faciiity.
    The Agency’s comments suggest that the Board add the closure
    plan requirements at 40 CFR 258.60
    (c) (2)
    and
    (C)
    (3), since
    comparable requirements are not contained in the existing
    regulations under Part 811.
    (PC #9 at 7.)
    The federal criteria
    require the written closure plan to include the largest area of
    the MSWLF unit ever requiring a final cover at any time during
    the active life,
    and the maximum inventory of wastes ever on the
    site over the active
    life.
    In order to satisfy the federal
    requirements, the Board has added the federal closure plan
    requirements under Section 811.110(d) (3).
    Additional postclosure care requirements for MSWLF units are
    specified at Sections 811.111(c)
    and 811.111(d).
    Section 811.111
    (c)
    extends the minimum postclosure care period to 30 years from
    15 years for MSWLF units to comply with the minimum federal
    requirement at 40 CFR 258.61
    (1992).
    The Board notes that
    a
    similar change has been included in Section 811.303, which
    specifies the requirements for establishing the design period for
    chemical and putrescible waste landfills.
    The Agency recommended that the Board revise Section
    811.111(c) (1) (C)
    to allow the reduction of the inspection and
    maintenance period provided that the owner or operator
    demonstrates that the reduced period will be sufficient to
    protect human health or environment.
    (PC #9 at 10.)
    The Agency
    notes that this revision will make the postclosure maintenance
    period for MSWLF units consistent with the design period criteria
    specified at Section 811.303.
    We accept the Agency’s
    recommendation.
    Today’s amendments include revised language that
    addresses the reduction of the inspection and maintenance period
    under Sections 811.111(c) (1) (C)
    and 811.111(c) (1) (D)
    .
    (see
    discussion relating to “Agency or Board action?” under major
    issue
    5)

    27
    Section 811.111(d) (1)
    requires the owner
    or operator
    of
    MSWLF unit to provide a description of the planned uses of the
    property during the postclosure care period.
    Further,
    Section
    811.111(d) (2)
    specifies that such uses must not disturb the
    integrity of the
    final
    cover,
    liner,
    or any other components of
    the containment system,
    unless such uses are necessary to comply
    with the requirements of Part 811.
    Section 811.111(d) (3)
    requires the Agency to approve any other disturbances if the
    owner or operator demonstrates the disturbance will not increase
    the potential threat to human health or the environment.
    Recordkeeping Requirements
    (Section 811. 112)
    The recordkeeping requirements applicable to MSWLF units are
    prescribed in Section 811.112.
    The Board notes that these
    requirements are in addition to the existing recordkeeping
    requirements of Parts 812 and 813.
    Section 811.112 requires the
    owner or operator to maintain an operating record at the site or
    in a location specified by the Agency.
    Further,
    the amendments
    specify the type of information that must be retained in the
    operating record,
    which includes location restriction
    demonstrations,
    inspection records,
    gas monitoring results,
    groundwater monitoring,
    financial assurance documentation,
    etc.
    The Agency noted that all of the information requested in
    Section 811.112
    (a) through
    (g)
    are not requested in Parts 812
    and 813.
    In order to avoid any confusion, the Agency suggested
    that the Board clarify the informational requirement under
    Section 811.112.
    (PC #9 at
    11.)
    Also,
    the Agency’s noted that
    the informational requirements relating to location restrictions
    at subsection 811.112(a) must include the
    FAA
    notification
    required by Section 811.302(e)
    to satisfy the federal requirement
    at 40 CFR 258.10(c).
    (PC #9 at 13.)
    Finally, the Agency
    suggested the addition of certain specific references to Parts
    812 and 813 for the purposes of clarity.
    (PC #9 at
    13.)
    The
    Board agrees that certain changes are required to clarify the
    informational requirements at Section 811.112.
    Today’s
    regulations under Section 811.112 reflect the changes suggested
    by the Agency.
    Location Standards
    (Section 811.302)
    Today’s regulations include an additional Section
    311.302(f), which requires an owner or operator of
    a MSWLF unit
    to submit to the Agency a copy of the Federal Aviation
    Administration’s approval obtained pursuant to Section
    811.302(e).
    The Board added the notification requirement in
    response to the Agency’s comments, which note that the proposed
    amendment to Section 811.302 does not satisfy the federal
    notification requirement at 40 CFR 258.10(c).
    Also,
    the Board
    notes that the requirement at Section 811.302(f)
    in the proposal

    28
    for public comment has been re-numbered as Section 811.302(g)
    in
    the today’s rules.
    Design period
    (Section 811.303)
    The amendments at Section 811.303
    reflect the minimum 30—
    year postclosure care period required for MSWLF units under the
    Subtitle D Regulations.
    Section 811.303(a)
    clarifies that the
    minimum postclosure care period for putrescible waste landfills
    is 30 years.
    The Board notes that it had requested comments on
    the proposed Section 811.303(d), which allowed a reduction of the
    minimum postclosure care period upon an Agency determination.
    The Board wanted to know whether such
    a determination should be
    addressed through an adjusted standard procedure.
    As noted
    earlier
    (see discussion relating “Agency or Board Action?” under
    major issues), the Board concludes that an adjusted procedure is
    an appropriate procedure to address requests for the reduction of
    the postclosure care period at a MSWLF unit,
    whenever such
    reduction involves all the elements of postclosure care,
    i.e.
    inspection and maintenance, leachate collection, gas monitoring,
    and groundwater monitoring.
    The adjusted standard requirements prescribed in the
    regulations at Section 811.303(d)
    allow an owner or operator of a
    MSWLF unit to petition the Board for a reduction of the minimum
    postclosure care period in accordance with Section 28.1 of the
    act and
    35 Ill. Adm. Code 106.Subpart
    G.
    Leachate Treatment and Disposal system
    (Section 811.309)
    Today’s regulations at Section 811.309(h)
    includes an
    additional provision comparable to the federal requirement at 40
    CFR 258.61 (a) (2)
    in response to the Agency’s comments.
    The
    Agency noted that the existing requirement at Section 811.309(h),
    which specifies the requirements for the time of operation of
    leachate management system does not satisfy the federal
    requirement at 40 CFR 258.61
    (a)(2).
    (PC
    #9
    at
    7.)
    Even though
    the Board regulations require a demonstration that treatment is
    no longer required to terminate leachate collection, the Agency
    states that additional evidence would be required to satisfy the
    federal requirement.
    The Agency suggested the inclusion of
    a
    provision comparable to the federal requirement.
    The instant
    regulations at Section 811.309(h)
    reflect the Agency’s
    recommendations, and also includes the adjusted standard
    provision for reduction of postclosure care period.
    (see
    discussion relating to “Agency or Board Action?” under major
    issues)
    Landfill Gas Monitoring
    (Section 811.310)
    Today’s regulations
    at subsection 811.310(c)
    includes an
    additional provision comparable to the federal requirement at 40

    29
    CFR 258.61(a)(4).
    The Board notes that the addition under
    subsection
    (c) (4)
    requires gas monitoring to be continued for a
    minimum period of thirty years after closure at MSWLF to be
    consistent with federal requirement at 40 CFR 258.61(a).
    The
    Board notes that the minimum gas monitoring period for MSWLF
    units was not specified in the proposed regulations due to an
    oversight.
    In addition, today’s regulations also prescribe
    conditions
    for reducing the thirty year minimum monitoring
    period, which are comparable to the federal criteria.
    These
    conditions are similar to the ones specified for the reduction of
    the monitoring period for other elements of postclosure.
    Landfill Gas Management System
    (Section 811.311)
    The instant -regulations include an additional requirement
    relating to gas management at Section 811.311(b).
    Essentially,
    the amendment prescribes the actions to be taken by an owner or
    operator of a MSWLF unit in the event of an exceedance of the
    allowable methane gas levels.
    The Board made this change in
    response to Agency’s comments that the existing requirements do
    not satisfy the federal requirement at 40 CFR 258.23(c) (1).
    (PC
    #9 at 4.)
    Groundwater Monitoring Program
    (Section 811.319)
    The amendments to Section 811.319 include a number of
    additional requirements applicable to MSWLF units.
    The
    amendments are described below.
    Detection Monitoring:
    Section 811.319(a) (1) (A) requires groundwater monitoring to
    be continued for a minimum period of
    30 years after closure at
    MSWLF units.
    This change reflects the 30—year minimum
    postclosure care period required by the Subtitle D Regulations.
    A similar change
    is included at Section 811.319(a) (1) (C).
    Today’s regulations also include additional clarifying
    language at Section 811.319
    (a) (1) (A)
    and
    (a) (1) (C)
    .
    The new
    language at Section 811.319(a) (1) (A)
    notes that the minimum
    postclosure care period may be reduced in accordance with Section
    811.319(a)(l)(C).
    The changes to Section 811.319(a) (1) (C)
    reflect that groundwater monitoring at a MSWLF unit may be
    discontinued after thirty years
    if certain conditions of Section
    811.319 (a) (1) (C)
    are met.
    The Board made these changes in
    response to the Agency’s comments, which notes that the reduction
    of groundwater monitoring period
    is consistent with the federal
    requirement at 40 CFR 258.61(b)(1).
    (PC #9 at 13-14).
    (see
    also,
    the discussion relating to “Agency or Board Action?” under
    major
    issues)

    30
    Section 811.319(a) (3) (C)
    requires an operator of a MSWLF
    unit to monitor each monitoring well for the organic chemicals
    listed
    in Section 811.319(a) (3) (A)
    on an annual basis, which
    is
    the minimum monitoring frequency under the Subtitle D
    Regulations.
    The Agency’s comments also suggest that the citation to
    Section 811.319(a) (1) (A)
    at Sections 811.319 (a) (3) (B)
    and
    811.319(a) (3) (C) must be change:~to Section 811.319(a) (3) (A).
    The Agency contends that Section 811.319 (a) (3) (A)
    is the
    appropriate reference,
    since the organic constituents that need
    to be monitored are listed in this Section.
    The Board disagrees.
    The citation to Section 811.319(a) (1) (A)
    is
    intended to ensure
    that the monitoring will begin as soon as waste is placed at a
    new unit or within one year of the effective date at an existing
    unit,
    and continue for a period of at least thirty years after
    closure.
    Further, the Board notes that Section 811.319(a) (3)
    clearly states that organic chemical monitoring must be conducted
    in accordance with Sections 811.319 (a) (3) (A)
    through
    811.319(a) (3) (C), which includes the list of constituents to be
    monitored under organic chemical monitoring.
    Therefore, the
    Board will not make any additional changes.
    Assessment Monitoring:
    The additional requirements applicable to MSWLF units have
    been proposed at Section 811.319(b)(5).
    Essentially, an owner or
    operator of a MSWLF unit
    is required to monitor the groundwater
    for the constituents listed
    in 40 CFR 258.Appendix II during
    assessment monitoring
    (Section 8l1.319(b)(5)(A)).
    The list
    contains approximately 300 inorganic and organic constituents.
    If any constituent
    is detected, within 14 days obtaining the
    sampling results, the owner or operator must place a notice
    identifying the such constituents in the operating record,
    and
    notify the Agency
    (Section 811.319(b)(5)(B)).
    The owner or
    operator is required to establish background concentrations for
    the detected constituents
    (section 811.319(b) (5) (C)).
    If any constituent concentration exceeds an applicable
    groundwater quality standard,
    the owner or operator must place a
    notice
    in the operating record identifying such constituents,
    and
    notify the Agency, officials of the local municipality or county,
    and all persons who own land or reside on land that directly
    overlies any part of the plume of contamination
    if the plume has
    migrated off-site.
    Today’s regulations also include two additional provisions
    relating to assessment monitoring under Section 811.319(b) (5).
    First,
    Section 811.319(b) (5) (D)
    requires an owner or operator to
    monitor the constituents listed
    in
    40 CFR 258.Appendix II on a
    semi-annual
    basis.
    Second,
    Section 811.319(b) (5) (E)
    allows an
    owner or operator of
    a MSWLF unit to request the Agency to delete

    31
    any of the of
    the
    40 CFR 258.Appendix II constituents by
    demonstrating to the Agency that the deleted constituents are not
    reasonably expected to be in,
    or derived from, the waste
    contained in the leachate.
    The Board included these additions in
    response to WNI’s comments.
    WNI
    noted that 40 CFR 258.Appendix
    II allowed for deletion of constituents that are not expected to
    be in,
    or derived from, the waste contained
    in the unit.
    WMI
    stated that the inclusion of the federal requirement eliminates
    wasteful groundwater monitoring practices.
    (PC #5 at 3.)
    The Agency also suggested some clarifying changes to the
    assessment monitoring requirements.
    Essentially, the Agency
    recommended that Section 811.319(b) (5) (A) must be referenced in
    the appropriate subsections dealing with the additional
    requirements for MSWLF units.
    Today’s regulations reflect the
    Agency’s suggestions.
    Reinedial/’Corrective Action:
    At the outset, the Board notes that the term “remedial
    action” used in the Board’s existing regulations has the same
    meaning as the term “corrective action” used in the Subtitle D
    Regulations.
    However,
    the term “corrective action” has been used
    in the instant proposal
    in relation to the MSWLF5 since the same
    terminology has been used in the Act.
    Since the remedial action requirements under the existing
    landfill regulations at Section 811.319(d)
    do not prescribe
    detailed requirements for the corrective action procedures,
    the
    Board has added the requirements of the Subtitle D Regulations
    relating to assessment of corrective action measures
    (40 CFR
    258.56),
    selection of remedy
    (40 CFR 258.57),
    and implementation
    of corrective action
    (40 CFR 258.58)
    in the new Sections 811.324,
    811.325,
    and 811.326.
    Assessment of corrective actionmeasures
    (Section 811.324):
    The assessment of corrective action measures is triggered
    whenlthe groundwater impact assessment, performed in accordance
    with Section 811.319(c),
    indicates that corrective action is
    needed or if the assessment monitoring indicates that a confirmed
    exceedance above the applicable groundwater quality standard is
    attributable to the facility.
    The Board notes that these
    triggers for assessment of corrective action measures, specified
    at Section 811.324(a)
    are the same as those specified for
    remedial action under Section 811.319(d).
    Further, the Board
    concludes that the corrective action trigger specified in Section
    811.324
    are consistent with the triggers specified in the
    Subtitle D Regulations.
    Today’s regulations at Section 811.324(a)
    require the owner
    or operator to initiate the assessment of corrective action

    32
    within
    14
    days of
    a determination that remedial action
    is needed
    at the site,
    instead of 90 days as proposed.
    Also,
    Section
    811.324(b)
    requires the assessment of corrective action to be
    completed within 90 days of initiating the assessment,
    instead of
    a reasonable time period as proposed.
    The Board made these
    changes to address Agency’s comments.
    The Agency noted that the
    proposed 90 day period to initiate the assessment of corrective
    action would result in unnecessary delay.
    (PC #9 at
    16.)
    Also,
    the Agency suggested that the Board require an owner or operator
    to complete the assessment within a specified number of days.
    The Agency recommended 90 days.
    (PC #9 at 16.)
    Section 811.324(c)
    requires the owner or operator to
    continue monitoring in accordance with the assessment monitoring
    program.
    -
    Section 811.324(d)
    requires the evaluation of corrective
    action measure to meet the requirements and objectives of Section
    811.325 and specifies
    a list of items that the owner or operator
    must address in the assessment.
    The items include time required
    to complete the remedy, cost of implementation,
    reliability, ease
    of implementation,
    and institutional requirements.
    Finally, Section 811.324(e)
    requires the owner or operator
    to hold a public meeting, prior to the selection of a remedy, to
    discuss the results of the assessment of corrective measures.
    Today’s amendments at Section 811.324(e) require an owner
    or
    operator to submit to the Agency
    a report describing the results
    of the assessment of corrective action measures.
    The Board notes
    that additional provision was added in response to Agency
    comments.
    The Agency noted that even though
    it will not be
    involved with the public meeting,
    a report of the assessment
    would assist the Agency in tracking the progress of remedial
    action and also respond to public inquiries.
    (PC #9 at 17.)
    Further,
    the Agency maintains that submittal of a copy to the
    Agency would require only minimal burden.
    Selection of Remedy
    (Section 811.325):
    The owner or operator
    is required to select one or more
    remedies based on the results of the assessment of corrective
    measures.
    Today’s regulations
    include an additional provision at
    Section 811.325(a) (2) that requires the owner or operator to
    submit to the Agency an application for significant modification
    of the permit describing the selected remedy.
    The instant
    regulations also specify that the application must be submitted
    within 90 days of completion of the assessment of corrective
    actin measures.
    The Board included the additional requirement to
    address the Agency’s comments.
    The Agency noted that the changes
    are necessary to bring the corrective action procedures within
    the significant modification requirement.
    (PC #9 at 18.)
    The
    Board agrees that the Agency should make the final determination

    33
    as to the
    appropriateness of the selected remedy subject to an
    appeal to the Board.
    The selected remedy must meet
    the objectives specified
    in
    Section 811.325(b),
    which require that the remedy must be
    protective
    of human health and environment, attain groundwater
    quality standards,
    control the sources
    of release, and comply
    with the standards of waste management during the implementation
    phase.
    Section 811.325(c)
    specifies the criteria that must be
    considered in selecting the remedy.
    Section 811.325(d)
    requires the owner or operator to specify
    the time schedules for initiating and completing the selected
    remedy.
    The Agency is required by Section 811.325(d) (2) to
    specify the time schedules in the facility’s permit.
    The factors
    that must considered by the owner or operator to specify the time
    schedules are prescribed in Section 811.325(d) (3).
    Section 811.325(e)
    requires the Agency to determine that
    rexnediation of
    a release is not required upon
    a demonstration by
    the owner or operator that:
    (i) groundwater is contaminated by
    multiple sources and cleanup of the contamination resulting from
    the MSWLF will not result in significant reduction in risk;
    (ii)
    contaminated groundwater is not a source currently or reasonably
    expected to be used as source of drinking water and is not
    hydraulically connected to other sources of drinking water;
    (iii)
    remediation
    is not technically feasible; or
    (iv) unacceptable
    cross media impact would result from remediation.
    However, an
    Agency determination will not affect the State’s authority to
    require the owner or operator to undertake source control or
    other measures.
    The Board also corrects a typographical
    oversight at Section 811.325(f).
    Implementation of Corrective Action
    (Section 811.326):
    The requirements relating to the implementation of the
    corrective action at MSWLF units are set forth in this Section.
    Section 811.326(a) (1) requires the owner or operator to establish
    a corrective action groundwater monitoring program, which at a
    minimum meets the assessment monitoring requirements, indicates
    the effectiveness of the remedy, and demonstrates compliance with
    the groundwater quality standards.
    The owner or operator is
    required by Section 811.326(a) (3)
    to take any necessary interim
    measures to protect human health and environment.
    Section
    811.326(b) requires the owner or operator to implement
    alternative methods to achieve compliance
    if the selected remedy
    fails to achieve compliance.
    The Agency must be notified prior
    to the implementation of any alternative methods.
    If the owner or operator determines that compliance cannot
    be achieved by currently available methods, the owner or operator
    is required by Section 811.326(c)
    to obtain
    a certification to

    34
    that effect,
    by a qualified
    groundwater scientist or a
    determination by the Agency.
    The owner or operator is required
    to implement alternate measures to control the source of
    contamination or for removal of equipment,
    units,
    devices,
    or
    structures.
    The
    instant regulations require an owner or operator to
    submit to the Agency an application for significant modification
    of the permit:
    in order to implement alternative measures in
    accordance with requirements at Sections 811.326(b)
    and
    811.326(c); and upon the completion of the remedy in accordance
    with requirements of Section 811.326(f).
    As discussed under the
    selection of remedy, the Board included these requirements to
    ensure the Agency’s oversight during the implementation of the
    corrective action.
    Today’s regulations at Section 811.326(c)
    also include a definition of the term “qualified groundwater
    scientist,” which
    is derived from 40 CFR 258.50(f).
    The remedy or corrective action
    is considered to be complete
    when compliance is achieved with the groundwater quality
    standards over a period of three years.
    Section 811.326(e)
    allows the Agency to specify an alternative time period by giving
    consideration to the factors listed under Section 811.326(e) (2),
    which include extent and concentration of release, contaminant
    characteristics, groundwater flow,
    etc.
    Upon completion of the
    remedy, the owner or operator is required to obtain a
    certification by a qualified groundwater scientist or
    a
    determination by the Agency that the remedy is completed.
    Load checking
    (Section 811.323)
    The amendments at section 811.323 require the load checking
    program at NSWLF units to include the inspection of incoming
    waste loads for polychlorinated biphenyl
    (PCB) wastes in addition
    to checking for hazardous wastes.
    Today’s regulations include
    clarifying changes at Section 811.323(b), which reflect that
    unacceptable wastes include PCBS.
    Financial Assurance Requirements
    (Section Sll.Subpart
    C)
    Applicability
    (Section 811.700):
    The amendments to Section 811.700 remove the exemption
    applicable to units of local governments from providing financial
    assurance for MSWLF units.
    Section 811.700(f)
    requires the
    owners or operators of MSWLF units to provide financial assurance
    for closure, postclosure,
    and corrective action.
    The Board notes
    that the existing regulations do not require financial assurance
    for corrective action.
    Finally,
    today’s regulations at Sections
    811.700(f)
    and 811.700(g)
    reflect the delayed compliance date for
    financial assurance requirements,
    as proposed by the USEPA.
    (see
    discussion relating to “compliance dates” under major issues)

    35
    Upgrading Financial Assurance
    (811.701)
    Today’s regulations
    include an additional provision at
    Section 811.701(c)
    that requires an owner or operator a MSWLF
    unit to make annual adjustments for inflations
    if required
    pursuant to Section 811.704(k) (2)
    or 811.705(d).
    Written Cost estimate (Section 811.704):
    The instant regulations include additional language at
    Section 811.704(g)
    that clarifies that the requirements for
    preparing the postclosure monitoring and maintenance cost do not
    apply to MSWLF units.
    The amendments at Section 811.704(k)
    specify the
    requirements for the written cost estimate for corrective action
    at MSWLF5.
    Essentially, the owner or operator of a MSWLF unit is
    required to prepare a detailed cost estimate,
    in current dollars,
    of the cost hiring a third party to perform the corrective
    action.
    The owner or operator is required to adjust the cost
    estimate annually for inflation.
    The cost estimate must be
    increased if changes in the corrective action program increases
    the maximum cost of corrective action.
    Requirements are also
    prescribed to allow the owner or operator to reduce the
    corrective action cost estimate if such estimate exceeds the
    maximum remaining costs of the corrective action.
    Lastly, the
    owner or operator is required to provide coverage until released
    from the financial assurance requirements.
    Revision of Cost Estimate
    (Section 811.705):
    The instant amendments at Section 811.705(d)
    require an
    owner or operator of a NSWLF unit to adjust the cost estimates of
    closure, postclosure, and corrective action for inflation on an
    annual
    basis.
    Section 811.705(d)
    also specifies the time period
    during which such adjustments must be made.
    Mechanisms for Financial Assurance (Section 811.706):
    The amendments clarify the applicability of the various
    mechanisms for providing financial assurance for corrective
    action at MSWLF units.
    In addition,
    Section 811.706(b)
    requires
    an owner or operator to ensure that:
    (i) the amount assured is
    sufficient to cover the costs of closure, postclosure care,
    and
    corrective action sufficient funds;
    and
    (ii) the funds will be
    available
    in a timely and fashion when needed.
    Section
    811.706(c)
    specifies the dates at which the owner or operator
    must provide financial assurance.
    The amendments to Sections 811.710
    (trust fund),
    811.71l(surety bond guaranteeing payment), 811.712
    (surety bond
    performance), and 811.713
    (letter of credit)
    clarify the

    36
    applicability of the different mechanisms for providing financial
    assurance for closure, postclosure care and corrective action at
    MSWLFs.
    The substantive requirements of the mechanisms have not
    been changed.
    Editorial Changes:
    The existing regulations under Section 811.Subpart G
    prescribe requirements applicable to the operator of a facility.
    However,
    the Subtitle D Regulations refer to “owner and
    operator.”
    The Board notes that its intent has always been that
    the owner is the operator if there is no other person operating
    the disposal facility operator,
    as indicated by the definition of
    “owner” at 35
    Ill. Adm.
    Code 807.104
    (see discussion under
    Definitions-Section 810.103).
    Today’s amendments under Subpart G
    include the terms “owner and operator” at all locations of the
    text where the term “operator
    has been used in order to avoid
    any confusion regarding the applicability of the regulations.
    The Board also notes that it has defined the term “owner” under
    Section 810.103 to clarify its intent.
    Part 814
    General Requirements
    (Sections 814.101,
    814.107,
    814.108.
    and
    814.109)
    The amendments to the existing landfill regulations of Part
    8l4.Subpart A prescribe additional requirements for existing
    MSWLF units and lateral expansions.
    These additional
    requirements are A are discussed in detail under major issues.
    Applicability (Section 814.101)
    Section 814.101 clarifies the applicability of the Part 814
    regulations to existing MSWLF units and lateral expansions.
    The
    existing MSWLF units are required to comply with the interim
    permit requirements
    in addition to complying with permitting
    requirements under the existing regulations
    (see discussion under
    permitting scheme).
    Compliance Date (Section 814.107)
    The instant regulations specify compliance dates for
    existing MSWLF units and lateral expansions.
    The compliance
    dates are consistent with the USEPA’s proposed compliance dates
    (58 FR 40568).
    The issues relating to compliance dates are
    discussed in greater detail under major issues.

    37
    Permit Requirements for Existing MSWLF Units and Lateral
    expansions fSections 814.107 and 814.108)
    The Board notes that
    a detailed discussion regarding the
    permitting requirements has been provided in the section
    addressing the permitting scheme in today’s opinion.
    Standards for Existing landfills that Remain Open for more than
    Seven Years
    (814.Subpart
    C,
    Section 814.302)
    Today’s regulations at Section 814.302(c) prescribe
    additional location restrictions derived from the federal
    Subtitle D regulations
    (40 CFR 258.10)
    for existing MSWLF units
    and lateral expansions pertaining to airports.
    The Board notes
    -
    that under the proposed regulations, the existing MSWLF units and
    lateral expansions were required to comply with the airport
    location restriction under the Board’s existing regulations at
    35
    Ill.
    Adm.
    code 811.302(e).
    The changes to the proposed regulations relating to the
    airport location restriction were made in response to the
    WNI’s
    comments, which noted certain inconsistencies in the proposed
    regulations.
    (PC #5 at 4.)
    Upon further review, the Board
    concludes that it would be inappropriate to require existing
    MSWLF units and lateral expansions to comply with the Board’s
    existing airport location restrictions at Section 811.302(e).
    This is because the Board’s existing airport location restriction
    is more stringent than that required under Subtitle
    D,
    particularly in that the Board requires written permission from
    the
    FAA
    to go within certain distances and Subtitle D does not.
    Moreover, the existing Board regulations exempts existing
    landfill facilities from the airport safety requirements.
    Section 814.302(c) (1)
    requires the owner or operator of an
    existing NSWLF unit or a lateral expansion locatted within
    certain distances
    of a airport runaway to demonstrate that the
    unit is designed and operated so that the unit does not pose a
    bird hazard to aicraft.
    Section 814.302(c) (2) requires an owner
    or operator seeking a lateral expansion within
    a five—mile radius
    of an airport to notify the affected airport and the FAA.
    The existing MSWLF units are also subject to the foundation
    mass stability standards at Sections 811.304 and 811.305.
    The amendments at Section 814.302(e) prescribe additional
    requirements for lateral expansions.
    The lateral expansions are
    subject to foundation mass stability standards (Sections 811.304
    and 811.305),
    liner and leachate collection system (Sections
    811.306,
    811.307,
    and 811.308),
    and groundwater impact assessment
    requirements
    (Section 811.317).

    38
    Today’s regulations also include the closure requirement for
    existing MSWLF units and lateral expansions that are unable to
    demonstrate compliance with the location standards relating to
    floodplains and airports.
    Section 814.302(f)
    requires the
    closure of existing NSWLF units that are unable to comply with
    the location restrictions by October 9,
    1996.
    Section 814.302(g)
    sets forth conditions under which the Agency may grant an
    extension of an additional two years for noncomplying units.
    The
    Board added the closure provisions
    in response to comments from
    WMI and the Agency.
    (PC #5 at
    4 and PC #9 at 47.)
    Standards for Existing landfills that must Initiate closure
    Within Seven Years
    (Section 814.Subpart
    D,
    Section 814.402)
    Today’s regulations at Section 814.402(c)
    prescribe
    additional location restrictions derived from the federal
    Subtitle D regulations
    (40 CFR 258.10)
    for existing MSWLF units
    and lateral expansions pertaining to airports.
    The Board notes
    that under the proposed regulations, the existing MSWLF units and
    lateral expansions were required to comply with the airport
    location restriction under the Board’s existing regulations at 35
    Ill. Adm. code 811.302(e).
    The rationale for the changes to
    proposed airport location restriction is explained above under
    Section 814.302.
    Section 814.402(c) (1)
    requires the owner or operator of an
    existing MSWLF unit or a lateral expansion locatted within
    certain distances of a airport runaway to demonstrate that the
    unit
    is designed and operated so that the unit does not pose a
    bird hazard to aicraft.
    Section 814.402(c) (2)
    requires an owner
    or operator seeking a lateral expansion within a five-mile radius
    of an airport to notify the affected airport and the FAA.
    The existing MSWLF units are also subject to the foundation
    mass stability standards at Sections 811.304 and 811.305.
    The amendments at Section 814.402(e)
    prescribe additional
    requirements for lateral expansions.
    The lateral expansions are
    subject to foundation mass stability standards
    (Section 811.304
    and 811.305),
    liner and leachate collection system
    (Sections
    811.306,
    811.307,
    and 811.308),
    and groundwater impact assessment
    requirements
    (811.317), groundwater monitoring system
    requirements
    (Section 811.318),
    and groundwater quality standards
    (Section 811.320).
    Today’s regulations include some minor changes and additions
    made in response to comments from the Agency and WMI.
    First,
    the
    Board added Section 814.402(b) (3) (I)
    to address Agency’s concerns
    relating to zone
    of compliance.
    The Agency noted that the
    alternate compliance boundary requirements under Section
    814.402(b) (3)
    must
    be limited to 150 meters beyond the edge a

    39
    MSWLF unit in order to be consistent with federal requirement at
    40 CFR 258.51(a)(2).
    (PC #9 at 5.)
    Second,
    Section 814.402(e) (4)
    has been clarified to require
    a groundwater impact assessment only
    if a unit is equipped with
    a
    compacted earth liner in accordance with Section 811.306(d).
    The
    Board clarified this requirement in response to comments from the
    Agency and WNI, which noted that under Subtitle D regulations
    only units equipped with
    a liner other than a composite liner
    must comply with the groundwater impact assessment.
    (PC #5 at
    4
    and PC #9 at 49.)
    The final addition to Section 814.402 addresses the closure
    requirement for existing MSWLF units that are unable to
    demonstrate compliance with the location standards relating to
    floodplains and airports.
    Section 814.402(f) requires the
    closure of existing MSWLF units that are in compliance with
    location restrictions by October
    9,
    1996.
    Section 814.402(g)
    sets forth conditions under which the Agency may grant an
    additional two years extension for noncomplying units.
    The Board
    added the closure provisions in response to comments from
    WMI
    and
    the Agency.
    (PC #5 at 4 and PC #9 at 47.)
    This opinion accompanies the order of this same day in this
    matter.
    IT IS SO ORDERED.
    I,
    Dorothy M.
    Gunn, Clerk of the Illinois Pollution Control
    Board, hereby certify that the above opinion was adopted on the
    ~-
    day of
    ~
    1993,
    by a vote of
    .~—-
    -~-~~--
    ~
    ~“
    ‘~
    Dorothy H. Gunn,
    Clerk
    Illinois Pollution Control Board

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