ILLINOIS POLLUTION CONTROL
    BOARD
    August
    31,
    1989
    IN THE MATTER OF:
    PROPOSED AMENDMENTS TO TITLE
    )
    R88-21
    35, SUBTITLE C
    (TOXICS CONTROL)
    )
    PROPOSED REGULATIONS
    FIRST NOTICE
    OPINION OF THE BOARD
    (by R.
    C. Flemal)
    This matter comes before the Board upon
    a regulatory
    proposal filed August
    5,
    1988 by the Illinois Environmental
    Protection Agency (“Agency”).
    The purpose of the proposal
    is to
    make additions to and to amend the Board’s regulations for the
    control of toxic substances
    in surface waters.
    The original proposal,
    filed August
    5,
    1988 has been amended
    by the Agency three times;
    the most
    recent amended proposal was
    filed August
    9,
    1989.
    The Agency has certified that adoption of
    such rules
    is federally required pursuant to the procedures of
    Section 28.2 of
    the Illinois Environmental Protection Act
    (“Act”), which became effective January
    1,
    1989.
    The Board has
    expedited this proceeding
    to allow for adoption of final
    rules
    by
    the certified deadline date of February
    4,
    1990.
    The Board today, by separate Order, adopts
    a modified
    version of the Agency’s August
    9,
    1989 proposal
    for First Notice.
    OVERVIEW OF PROPOSAL
    The instant proposal both adds
    to and amends the Board’s
    existing water quality regulations
    (35 Iii. Adm. Code 302.101
    et
    ~g.)
    reflecting the mandate of
    the Federal Clean Water Act
    (“CWA”)
    as well as advances
    in the sciences of toxicology and
    chemical detection.
    The underlying policy of both the existing
    regulations and the proposed regulations
    is that the waters of
    Illinois must not be impacted by toxic substances
    in toxic
    amounts.
    This section will briefly summarize the major elements
    of the current proposal.
    The Standard for Toxics
    in Waters of the State
    The standard that we propose today
    is very simple.
    Moreover,
    it
    is the standard required by federal
    law and
    is
    hardly different from the standard which already exists
    in our
    regulations.
    Simply put, the standard
    is:
    “There shall
    be no
    toxic substances present in toxic amounts”.
    We are not thereby
    proposing that all toxic substances be eliminated from the
    environment.
    However, we are requiring that those
    toxic
    102—~29

    —2—
    substances which may be present occur at such concentrations or
    in such load as to cause no toxic effects.
    Homely put, we are
    requiring adherence by the potential polluter
    to an apt adage for
    civilized society:
    “Your right to swing your fists ends where the
    other guy’s nose begins”.
    There
    is
    in fact no apparent disagreement over this
    fundamental standard.
    Rather, the disagreement that exists
    is
    over
    the definition of what constitutes
    a “toxic amount”.
    For
    many substances, particularly the common toxic substances, we do
    know to very good levels of approximation what constitutes a
    toxic
    amount.
    This level of certainty
    is exemplified by the
    substances for which we now propose,
    or have previously adopted,
    specific numeric standards
    (see Section 302.208).
    If this were the end of story,
    the instant proposal would
    constitute
    a straightforward exercise.
    This
    is not the case.
    The problem is that
    there are many substances
    for which we cannot
    identify with much precision what constitutes a “toxic amount”.
    In fact,
    the down—side is that we cannot do this for
    the great
    majority of toxic substances;
    the many necessary studies simply
    have not yet
    been done, and
    in many cases
    the toxic nature of
    substances themselves may not have been identified.
    The up—side
    is that these substances tend
    to be rare and hence
    the chance of
    encountering them in the environment
    is small.
    Defining the “Toxic Amount”
    The Agency has proposed, and we accept, what
    we believe to
    be an
    innovative and constructive approach
    to defining what
    constitutes a “toxic amount” for those substances for which we
    cannot yet realistically specify a numeric standard.
    The
    approach consists of setting up
    a tight series of procedures by
    which the best currently—available toxicity information
    is used
    to approximate that numeric criteria which might eventually
    evolve into a standard as more and better data accumulate.
    This approach has several advantages.
    Among
    these are that
    it
    is not necessary to propose numbers for substances which may
    not be encountered
    in Illinois waters,
    thus warding off a
    substantial unproductive effort.
    Additionally,
    the narrative standard approach allows
    for
    rapid reaction against a substance not previously existent or not
    previously recognized as being
    toxic.
    Environmental control
    history
    is replete with examples of new needs and new
    technologies causing the development of, and entry
    into,
    the
    environment of
    new
    substances.
    Moreover,
    the
    toxicity
    of
    some
    of
    these substances has not been recognized until
    long after their
    appearance
    in the environment.
    It
    is one
    of the major
    shortcomings of environmental control that
    it has been sluggish
    in responding to the appearance of
    new
    toxic substances.
    Today’s
    102-330

    —3—
    proposal will not eliminate the sluggishness,
    but
    it can
    substantially reduce
    it.
    Under the instant proposal, whenever
    it
    is recognized that a new substance offers a threat,
    the Agency
    would have the ability to immediately react
    to whatever sources
    may be responsible and to work with that source in eliminating
    the threat.
    These advantages notwithstanding,
    the principal advantage of
    the instant proposal is that
    it greatly reduces the potential for
    lending unwarranted credence to unreasonable numeric standards.
    The history of environmental control clearly tells us that
    determination of the appropriate standard for most substances
    does not come easily.
    Rather, large amounts of data must be
    accumulated and extensive study must be undertaken before the
    obvious numeric standard,
    if ever,
    is revealed.
    This condition,
    however, cannot be an excuse for the environmental decisionmaker
    to defer action until certainty reaches
    its never—achievable
    limit.
    The art of the environmental decisionrnaker
    is,
    in fact
    and in no small measure, knowing when and how to act
    in the face
    of less than complete certainty.
    This
    is not
    to say that even
    the most artful of
    the environmental decisionmakers
    is always
    correct.
    To the contrary,
    it
    is quite common that later research
    shows that numeric standards have been incorrectly set,
    thus
    requiring that standards be continuously reassessed
    in light
    of
    the most recent scientific information.
    But the reassessment
    process
    is also slow;
    work loads are heavy and crises consume
    attention.
    Moreover, once graced with a numeric limit,
    a
    standard takes on a distinct life of its own, and the most
    difficult stumbling block
    to rectifying an existing numeric
    standard tends to be the very prior existence of the standard.
    It
    is certain that there are many standards on today’s books
    which are outmoded, outdated, and not justifiable under knowledge
    presently
    in existence.
    The approach proposed here reduces the likelihood of
    outdated and outmoded standards by deferring formulation of the
    numeric standard until more of the pertinent information
    is
    available.
    At
    the same time,
    today’s proposal allows the Agency
    to utilize the best currently—available information to interpret
    the fundamental policy
    of “no toxic substance in toxic amounts”.
    This policy,
    to be sure,
    is not without its disadvantages,
    and these must be understood.
    Among them
    is that the regulated
    community may find some discomfiture with the prospect of not
    always being able
    to
    identify beforehand what specific numeric
    level of a toxic substance
    is likely
    to constitute
    a violation of
    the prohibition against toxicity.
    We note,
    however,
    that this is
    also true for most
    toxic substances under current prohibitions
    against toxicity.
    We do believe that today’s approach can go a
    long way toward easing any discomfiture by spelling out
    in great
    detail the procedures by which criteria which define a “toxic
    amount” can be determined by anyone.
    Thus, any person may
    102—33 1

    —4—
    determine what constitutes a “toxic amount”,
    even for substances
    not yet considered by the Agency as regulator.
    Moreover,
    the
    regulated community need not be reminded that
    it has due process
    rights, plus several routes of appeal to the Board,
    should
    it
    find disagreement with the manner in which the procedures
    proposed herein are interpreted or applied.
    A second disadvantage is that which accompanies any
    pioneering effort.
    No other
    state has chosen the innovative
    route we propose here today.
    Thus, we can rely on no—one’s track
    record
    for guidance
    in ironing out those glitches, small or
    otherwise, which innovation inevitably carries.
    This
    disadvantage, however, certainly must not be viewed as fatal,
    less we make no progress.
    Allowed Mixing
    Today’s proposal affirms a long—standing tenet of both
    Illinois and federal environmental
    law.
    That
    tenet is that
    a
    discharger,
    given certain limits imposed by the receiving water
    body and requirements
    to meet treatment standards,
    is allowed a
    mixing zone in which the otherwise applicable ambient water
    quality standards do not apply.
    Specifics of how this policy
    would apply are discussed within a later section of this Opinion.
    Acute and Chronic Standards
    A salient
    feature of the instant proposal
    is a”two—number
    standard system”
    to replace the existing “single—number approach”
    for certain chemical constituents.
    This “two—number standard
    system” utilizes an acute standard
    (“AS”) and a chronic standard
    (“CS”).
    This approach is desirable because
    it addresses both
    acute effects caused by
    a short—term “dose” of
    a pollutant and
    chronic effects produced by long—term constant exposure.
    Under
    the proposal, where no mixing zone has been established,
    the AS
    may not be exceeded
    in
    a single sample and the
    CS may not
    be
    exceeded by
    the average of
    no fewer
    than four samples collected
    over
    a period of at least
    four
    days.
    Where
    a mixing zone has
    been established the AS may not be exceeded
    in the mixing zone
    except within a small, special part
    of the mixing
    zone,
    the Zone
    of
    Initial Dilution
    (“ZID”), and the CS may not be exceeded
    outside of
    the mixing
    zone.
    PROCEDURAL HISTORY
    This rulemaking was initiated by
    the Agency’s filing of its
    proposal on August
    5,
    1988 (Ex.
    27).
    Hearing Officer Orders of
    August
    29,
    1988 and October
    24,
    1988 set deadlines
    for
    the filing
    of pre—submitted testimony and exhibits.
    Upon motion by the
    Agency and the Illinois Environmental Regulatory Group
    (“IERG”)
    another pre—hearing coniference was held on September
    28,
    1988
    102—332

    —5—
    pursuant to the procedures of Section 27(e)
    of the Act.
    On
    October
    6,
    1988,
    the Board entered an order directing the Hearing
    Officer to schedule a pre—hearing conference to address drafting
    issues and conformance with the requirements of the
    Administrative Procedure Act
    (“APA”).
    A second pre—hearing
    conference was accordingly held October
    14,
    1988.
    As a result of
    discussions concerning modifications necessary to meet the
    technical drafting requirements of the APA, on October
    28,
    1989,
    Board staff issued and served upon the notice list, an edited
    draft of the Agency’s proposal
    “solely intended to aid the Agency
    in drafting the proposal”, accompanied by an explanatory
    memorandums-.
    The memorandum noted incorporation by reference and
    vagueness problems as being of particular concern to the Board.
    To date,
    seven hearings have been held in this proceeding,
    77 exhibits have been admitted, and
    13 Public Comments (“PC”)
    have been filed.
    Public Comments have been received by the
    following entities:
    Pfizer Pigments,
    Inc.
    (PC #1);
    Sanitary
    District of Rockford (PC #2-4); Metropolitan Waste Reclamation
    District of Greater Chicago (PC #5); National Wildlife Federation
    (PC #6); Amerock Corporation
    (PC #7);
    the Agency
    (PC
    #8,
    #9);
    Illinois Steel Group
    (“ISG”)
    (PC #10); village of Sauget
    (PC
    #11); and IERG (PC #12).
    These comments have provided
    information useful to the Board in formulating the instant
    proposal.
    The comments will not be synopsized here, but will be
    referenced throughout this opinion where relevant.
    Agency has
    revised its proposal three times
    (see,
    Ex.
    29,
    43 and PC #8).
    The Agency filed its most recent proposal, which supersedes
    all others, on August
    9,
    1989.
    As a result of these revisions,
    the relevancy of portions of the testimony and exhibits has been
    mooted.
    Given the federally—imposed time constraints for
    adopting the instant regulations, the testimony elicited at
    hearing will be reviewed summarily with emphasis being given to
    testimony of particular current
    relevance and interest.
    However,
    the Board will reference that testimony and documentary evidence
    which it considers relevant to the following discussion of the
    Board’s proposed regulations.
    The first hearing, held November
    18,
    1988, was devoted to
    testimony from the USEPA concerning
    its reaction to the Agency’s
    proposal and to the Agency’s explanation of the proposal.
    Charles Sutfin, Director of the Water Division for USEPA Region
    v,
    testified that, although the USEPA proposed some minor
    1 Although the memorandum indicated the Board’s intention to
    enter the memorandum and marked—up version of the Agency proposal
    as an exhibit, due
    to oversight this has not previously been
    done.
    The memorandum and marked—up proposal are hereby entered
    as Exhibit 77.
    102—333

    —6—
    changes,
    it supported the proposal as written as being consistent
    with federal law
    (R.
    9/18/88 at 25—38,
    41,
    76—77).
    Toby Frevert, manager
    of the Planning Section for the
    Agency’s Division of Water Pollution Control, Robert Mosher, an
    Agency environmental protection specialist, and Clark Olson,
    provided the primary testimony explaining the Agency’s proposal
    at the initial hearing
    (R.
    9/18/88 at 107—51).
    Because the
    Agency’s proposal has undergone substantial revisions since this
    initial hearing was held,
    the Agency’s opening testimony will not
    be
    reiterated in full here.
    However,
    the testimony provides a
    good overview of primary concepts of the proposal.
    In
    particular,
    the Agency emphasized the distinction between a
    criterion and a standard
    (Id. at
    127—28).
    This distinction is an
    essential element of the narrative standard.
    At the second hearing, held December
    6,
    1988,
    the Agency
    introduced revisions to its proposal
    (Ex.
    29).
    These revisions
    were made in response
    to concerns expressed by participants
    that
    use of
    the narrative standard constituted an improper delegation
    of
    the Board’s rulemaking authority to the Agency
    (R.
    12/6/88 at
    239,
    414).
    The Agency also testified that the proposed
    regulations were federally required under the CWA
    (Id.
    at 250—
    63).
    The bulk of the Agency’s testimony is its response to
    ques:ions pre—submitted by various participants.
    Of particular
    note was the Agency’s explanation of how the proposed regulations
    would operate
    in a “real—life” situation (Id.
    at 292—97).
    The
    Agency testified that it views the regulations as being
    applicable
    to both permitted and non—permitted dischargers
    (Id.).
    The Agency explained that under
    the provisions of the
    narrative standards,
    the Agency
    (or Illinois Attorney General or
    any other person)
    would bring an enforcement action for violation
    of the toxicity standard
    or for violation of a permit condition
    rather
    than bringing suit
    for
    a violation of the narrative
    criteria
    (Id.
    at 796—97).
    The Agency also made clear
    that,
    under
    the terms of the proposal,
    the narrative standard would not
    be
    applied where a substance is regulated by
    a specific numeric
    limit pursuant to Section 302.208
    (Id. at
    320).
    At the December
    7,
    1988 hearing,
    the Agency continued to
    respond to pre—submitted questions posed by participants.
    The
    Agency addressed the “limits of detectability”
    for chemical
    constituents listed in Section 208
    (R.
    12/7/88 at 446—56).
    The
    testimony elicited at this hearing will not
    be
    synopsized here,
    but will be addressed where appropriate under
    the Board’s
    discussion of
    its proposed modification to the Agency’s proposal.
    On January
    5,
    1989,
    the Board adopted RES 89-1,
    In the
    Matter
    of: Application of Procedural Amendments of
    P.A.
    85—1048
    to Newly Filed and Pending Regulatory Proceedings.
    (This
    Resolution will be discussed
    in more detail later
    in
    this
    Opinion).
    On January 13,
    the Hearing Officer entered an Order
    102—334

    —7—
    implementing RES 89—1
    in this proceeding,
    directing the Agency to
    file a Section 28.2 formal certification, along with any
    contemplated revised proposal, on or before February 9,
    1989.
    A
    certification was received on February 10,
    1989.
    The resulting
    deadline date
    for submission of the EcIS pursuant to Section
    28.2(d)
    is therefore calculated to be August
    9,
    1989.
    Also on February
    9,
    1989,
    the Agency submitted an amended
    proposal containing significant changes from the December revised
    proposal
    (Ex.
    43).
    The Agency explained these changes at hearing
    on February
    16,
    1989.
    The Agency amended the narrative standard
    provisions by including,
    as part of the proposed regulations,
    the
    procedures used for deriving criteria under
    that standard
    (R.
    2/16/89 at
    627—40).
    Previously,
    these procedures remained Agency
    policy rather than proposed regulations.
    The Agency reiterated
    that “no toxic substances
    in toxic amounts” was the water quality
    standard
    (Id. at 646).
    The proposed narrative standard
    procedure,
    according to the Agency, allows
    for the “derivation of
    a criterion to accomplish the intent of the toxicity standard,
    and that criteria sic
    is designed to protect instream value,
    which is another step yet removed from what would be a permit
    limitation”
    (Id. at 646—47).
    In response to the Agency’s
    February
    9,
    1989 amended proposal the Illinois Environmental
    Regulatory Group
    (“IERG”) stated its position that the narrative
    standard procedures were inappropriate as Board regulations and
    should remain Agency procedure
    (Id. at 668).
    At the February 17,
    1989 hearing,
    the ISG expressed concern
    over the lack of notice of criteria derived pursuant to the
    narrative standard.
    (R.
    2/17/89 at 915—16).
    The participants
    seemed
    to agree that notice was not a problem for permitted
    dischargers
    (Id.).
    Regarding non—permitted sources,
    the Agency
    stated that criteria developed under the narrative standard would
    be entered on a list and published in the Agency’s annual program
    plan and possibly in the Environmental Register
    (Id. at 916—
    17).
    The Board notes that
    it has attempted to address
    this
    concern of lack of notice of criteria developed under
    the
    narrative standard in the Board’s proposed regulations.
    Public
    comment in response
    to these proposed requirements of publication
    is invited.
    The Agency also explained its rationale for proposing
    a ZID
    (R.
    2/17/89 at
    939—40).
    The existence of
    a ZID recognizes
    the
    mixing capabilities of the receiving body and allows a small
    portion of that receiving body to be used to accomplish dilution.
    (Id.)
    The Agency concluded its presentation of, and answered
    inquiries to,
    its proposal at the February 17,
    1989 hearing.
    The June
    13,
    1989 hearing opened with the testimony of Dr.
    Philippe Ross,
    sponsored by the Scientific and Technical Section
    of the Pollution Control Board
    (R. 6/13/89 at
    7—31;
    see also,
    Ex.
    52—55.).
    While Dr. Ross expressed concern over the lack
    of
    102—335

    —8—
    reference to sediment contamination in the Agency’s proposal
    (Id.
    at
    30), this concern was not shared by any other participants
    (Id. at 142, 146—47).
    Sidney Marder,
    Executive Director of IERG,
    testified concerning IERG’s points of agreement and disagreement
    with the Agency’s proposal
    (Id. at 64—86).
    Specifically, IERG
    opined that adoption of
    the proposed narrative standard
    constituted an improper delegation of the Board’s rulemaking
    authority to the Agency
    (Id.
    at
    67;
    Ex.
    56).
    IERG, therefore,
    proposed that “toxicity criterion”
    be defined as a “permit—
    specific mathematically derived number which results in an
    effluent limitation
    in an NPDES permit”
    (Id. at
    69).
    IERG then
    proposed that the NPDES permit procedures be dove-tailed with the
    Board’s provisions
    for adjusted standards (Ill. Rev.
    Stat.
    1987,
    ch. lll~,par. 1028.1).
    According to IERG,
    criteria derived
    pursuant
    to the narrative standard must be adopted by the Board
    (R.
    6/13/89 at 74).
    IERG suggested that, where the parties agree
    upon
    a toxicity criterion,
    the Board could adopt such criterion
    pursuant to
    its adjusted standard procedures and this criteria
    would
    then be the subject of an NPDES permit
    (Id. at 74—75).
    IERG’s proposed changes would effectively limit the proposed
    regulations
    to permitted dischargers
    (Id.
    at 108—16).
    Concerns were expressed by the Agency that IERG’s suggested
    changes would impermissibly involve the Board
    in the Agency’s
    decision to grant or deny a permit
    (R.
    6/13/89 at 94—96).
    The
    hearing officer posed questions to IERG concerning the
    practicality of IERG’s assumption that the Board could act upon a
    Petition for Adjusted Standard within the requisite time—period
    for acting on the permit application
    (Id. at 87—92).
    IERG also sponsored the testimony of Dr. Roy Ball and Gerald
    Erjavic.
    Dr. Ball’s testimony focused on the concepts of a
    mixing zone and ZID and the advantages of computer modeling in
    determining their proper size
    (R.
    6/13/89
    at 125—83).
    Dr.
    Ball
    opined that
    the Agency’s proposal should
    be changed to recognize
    that
    a mixing zone and
    ZID exist
    for every discharger
    (Id.
    at
    127—28).
    Dr.
    Ball agreed that setting
    a maximum size for
    a
    mixing zone is reasonable
    (Id.
    at
    128-29).
    Gerald Erjavic,
    a chemist employed by the Water Quality
    Staff of
    the Environmental Affairs Department of Commonwealth
    Edison, primarily testified as
    to proposed revisions
    to the
    residual chlorine limitation
    set forth
    in Section 208
    (R.
    6/13/89
    at 187—96).
    The
    final hearing before closing the record for purposes of
    proceeding
    to First Notice was held June
    14, 1989.
    The Agency
    noted that
    issues raised at the prior hearing concerning residual
    chlorine, mixing zone size and the procedures utilized for
    deriving
    a criteria under
    the narrative standard might
    result
    in
    modification of the proposal
    (R.
    6/14/89 at
    261—63).
    102—3 3 6

    —9—
    Larry Hughes, Director of Waste Treatment Facilities of
    the
    Greater Peoria Sanitary District, testified on behalf of the
    Illinois Association of Sanitary Districts
    (“IASD”)
    (R. 6/14/89
    at 264—271;
    see also,
    Ex. 62).
    The IASD expressed concerns
    regarding the detection limit
    for residual chlorine
    (Id.
    at 266—
    67), certain proposed numeric limits,
    the size of a ZID
    (Id.
    at
    268—69),
    the “not—to—be—exceeded at anytime” standard
    (Id.
    at
    269), and the lack of certified biomonitoring labs
    in Illinois
    (Id. at 269—70).
    Dr. Carroll Missimer,
    a scientist for the Environmental
    Assessment and Biomonitoring Group at EA Engineering, Science and
    Technology,
    Inc.,
    testified on behalf of the Village of Sauget
    (R.
    6/14/89 at
    300 et seq.).
    Dr. Missimer opined that setting a
    maximum size limit on mixing zones was arbitrary and that mixing
    zones and ZIDs should be determined on a site—specific basis
    (Id.
    at
    301—04,
    337).
    Dr. Missimer testified that,
    to his knowledge,
    no other
    state
    in USEPA Region V put
    a maximum size limit
    on
    mixing zones and ZIDs
    (Id.
    at 304—05).
    Sauget also suggested
    that consideration be given
    to providing for the implementation
    of the “acid—soluble method”
    of metal detection in place of the
    “total recoverable method”
    in light of the USEPA’s imminent
    approval of the former technique
    (Id. at 309—11).
    Lastly,
    Sauget
    suggested some definitional changes
    to the Agency’s proposal
    (Id.
    at 306—07,
    311—12).
    Mr. Frank Bender
    testified on behalf of the Illinois
    Wildlife Federation (“IWF”)
    (R.
    6/14/89 at 365—71;
    see also,
    Ex.
    68).
    The IWF suggested the use
    of more stringent human threshold
    and non—threshold criteria
    (Id.
    at 367—68)
    and suggested changes
    to the procedures used to derive such criteria
    (Id.
    at 368—69).
    The Foundation opposes the use of mixing zones and ZIDs (Id.
    at
    370).
    Mr.
    Carl Cannon and Mr. William West testified on behalf of
    the Illinois Steel Group.
    Mr.
    Cannon, Manager of Environmental
    Control for
    the Granite City Division
    (“GCD”)
    of National Steel
    Corporation, focused on the possible effects of the proposed
    regulations on Horseshoe Lake,
    a receiving water
    for GCD’s
    discharge
    (R.
    6/14/89 at 376—81).
    ISG suggested that the
    proposed regulation providing that mixing zones and ZIDs are not
    applicable to lakes be stricken
    (Id.
    at 380—81).
    Mr. West,
    Director
    of Environmental Control for LTV Steel
    Company, testified as
    to the costs incurred by LTV in complying
    with Ohio’s biomonitoring requirements
    (R. 6/14/89
    at
    390—94,
    see
    also,
    Ex.
    70).
    At the time of this hearing,
    ISG had not
    developed a
    final position on the Agency’s proposal
    (Id.
    at 394).
    By Hearing Officer Order
    of July 12,
    1989,
    the Board’s
    projected timetable was set forth,
    and an August
    9,
    1989 date set
    for submission of any written comments which participants wished
    102—337

    —10—
    to have fully considered by the Board prior to adoption of a
    proposal for first notice.
    Assuming the applicability of a
    February
    4,
    1990 adoption deadline, the Order noted that to allow
    time for the running of each of the APA’s
    45—day first notice and
    45—day second notice periods., Board action on a first notice
    proposal was necessary in the last week
    in August or the first
    week
    in September, and on a second notice proposal
    in the last
    week
    in November or the first week in December
    to allow for final
    adoption of a proposal on or before January
    25, 1990.
    Comments were timely filed on or before August
    9 by Amerock,
    ISG,
    Sauget and IERG; on August
    17,
    IERG filed
    a motion for leave
    to file corrected comments which
    is hereby granted.
    On August
    9,
    the Agency filed an amended proposal as well as comments by
    USEPA.
    On the same day, DENR filed what
    it stated was the first
    of two installments of economic information on the Agency’s
    proposal, stating its intent
    to file the second installment in
    mid—November.
    (This filing will be discussed
    in more detail
    later
    in this Opinion.)
    LEGAL ISSUES
    This proceeding has involved several legal issues of
    first
    impression,
    relative to implementation of various amendments
    to
    Section 27 and new Section 28.2 of the Act which took effect
    after
    the filing of this proposal.
    SB 1834 and RESOLUTION 89-1
    On January
    5,
    1989,
    the Board adopted RES 89—1,
    In the
    Matter of: Application of Procedural Amendments of P.A.
    85—1048
    to Newly Filed and Pending Regulatory Proceedings.
    In
    that
    Resolution,
    the Board addressed
    the significant procedural
    changes
    in the Act enacted
    in SB
    1834,
    P.A. 85—1048, effective
    January
    1,
    1989.
    The Board determined that SB 1834 would in some
    measure,
    apply to proceedings filed before
    its effective date,
    citing McQueen v.
    Conner,
    385
    Ill.
    455,
    459 N.E.
    2d
    435,
    437
    (1943) and Nelson
    v.
    Miller,
    11
    Ill.
    2d
    378, 143 N.E.
    2d 673
    (1977).
    The Board noted that Section 27(a)
    of the Act, as
    amended by
    SB 1834,
    allows and requires the Board,
    rather than
    the Illinois Department of Energy and Natural Resources
    (“DENR”)
    to determine whether an economic impact study
    is
    to be
    performed.
    For pre—1989 filings,
    the Board construed SB 1834
    “as
    providing that any final conclusion reached by DENR prior
    to
    December
    31,
    1989 regarding the need for an EcIS
    is conclusive
    in
    that proceeding
    (p.2).
    As
    DENR had notified the Board of
    its
    decision
    to conduct an EcIS by letter filed December
    21,
    1988,
    the Board has made no EcIS determination
    in this proceeding.
    102—338

    —11—
    SB 1834 also added a new Section 28.2 which establishes
    expedited requirements for federally required rules.
    Among other
    things, Section 28.2 establishes a procedure for Agency
    certification that rules are
    in fact federally required, and sets
    a six—month deadline for preparation of an EcIS.
    In proceedings
    filed prior
    to 1989,
    such as this,
    the Board determined that
    where “DENR has already determined to perform an EcIS,
    the Board
    will construe the date upon which any Agency certification
    is
    received as triggering the six—month deadline for preparation of
    the EcIS”
    (p.
    5).
    The Board also determined that receipt of the
    Agency’s formal certification would also trigger the
    6 month
    deadline for publication of a first notice proposal
    in the
    Illinois Register specified
    in Section 28.2(e).
    It has been clear
    since the beginning of this proceeding
    that some amendments
    to the existing toxics control regulations
    are federally required,
    leaving for resolution issues of what
    amendments are required when.
    Decisions about the timetable for
    rulemaking are intertwined with
    issues relative to the content of
    rules and raise considerations relative to EcIS presentation.
    These are all discussed below.
    The Mandate of the CWA
    Section 10l(a)(3) of the CWA states as a national policy
    objective that the discharge of toxic pollutants
    in toxic amounts
    shall be prohibited.
    Section 303(c)(2)(B)
    of the Water Quality
    Act of 1987 provides that states “shall adopt criteria for all
    toxic pollutants listed pursuant to Section 307(a)(l)
    ...
    as
    necessary to support such designated uses.
    ...
    Such criteria
    shall be specific numerical criteria for such toxic pollutants.
    Where such numerical criteria are not available
    ...
    such states
    shall adopt criteria based on biological monitoring or assessment
    methods consistent with information published pursuant
    to section
    304(a)(8).”
    (33 U.S.C. §303(c)(2)(B).).
    In conjunction with the above-quoted provisions,
    the United
    States Environmental Protection Agency
    (“USEPA”) published a
    guidance document
    (Ex.
    46)
    to aid states
    in adopting regulations
    consistent with the requirements of
    federal
    law.
    This document
    sets forth the following three options by which states may meet
    the requirements of Section 303(c)(2)(B):
    1)
    Adopt statewide numeric water quality standards
    for all EPA criteria
    for section 307(a)
    toxic
    pollutants regardless of whether
    the pollutants
    are known to
    be present;
    2)
    Adopt specific numeric water quality standards
    for section 307(a)
    toxic pollutants as necessary
    to support designated uses where such pollutants
    are discharged or are present
    in the affected
    102—339

    —12—
    waters and could reasonably be expected to
    interfere with designated uses;
    3)
    Adopt a procedure to be applied to a narrative
    water quality criterion.
    This procedure shall be
    used by the State in calculating derived numeric
    criteria, which criteria shall be used for all
    purposes under section 303(c) of the CWA.
    Such
    criteria need to be developed for section 307(a)
    toxic pollutants, as necessary to support
    designated uses, where these pollutants are
    discharges or present
    in the affected waters and
    could reasonably be expected
    to interfere with
    designated uses.
    Pursuant
    to the second and third options quoted above,
    the
    Agency’s proposal contains both numeric water quality standards
    and a narrative standard.
    In pre—submitted testimony and
    in
    response to questions posed at hearing,
    the USEPA suggested minor
    changes to the Agency’s proposal but also expressed its opinion
    that the proposal as written complied with federal law
    (see,
    Ex.
    23;
    R.
    11/18/88 at
    25—38,
    41—42,
    76—77.)
    Required Date of Regulations
    The Agency interprets that federal law mandates adoption of
    the instant
    regulations
    (or at least an equivalent regulation
    pursuant to Section 303(c)(2)(B)
    of
    the CWA)
    no later than
    February
    4,
    1990
    (Ex.
    44).
    The ISG has questioned the accuracy
    of the deadline and suggests that Illinois
    is not required to
    adopt water toxic regulations pursuant
    to the CWA until October
    of 1990
    (R.
    6/14/89 at
    432;
    PC #10).
    According
    to
    ISG,
    the 1972
    amendments
    to the CWA require each state’s water pollution agency
    to review water quality standards once every three years
    beginning with the effective date of the 1972 amendments on
    October
    18,
    1972.
    Consequently, Illinois would have conducted
    its most recent review in October of
    1987.
    Therefore,
    ISG argues
    that the proposed regulations need not be adopted until October
    18,
    1990.
    By Hearing Officer Order of July
    21,
    1989,
    a letter dated
    July 13,
    1989
    to the Agency
    from USEPA was entered as Exhibit
    75.
    This letter reasserts the position
    of USEPA stated at
    earlier hearings that the deadline date for adoption of water
    toxic regulations
    is February
    4,
    1990
    (Ex.
    75).
    The USEPA’s
    position as
    to the deadline imposed under federal law
    is entitled
    to deference.
    Therefore,
    the Board views February
    4,
    1990 as
    the
    deadline for adoption of the instant regulations.
    However,
    public comment
    on this issue
    is
    invited.
    102—34 0

    —13—
    Federal Requirements
    The next
    issue is whether the Agency’s proposed regulations
    are federally required by the provisions of the CWA.
    The Agency
    has certified that both the specific numeric standards of Section
    302.208 and the narrative standard of Section 302.210 are
    federally required
    (Ex.
    44).
    The Agency asserts that Section
    303(c)(2)(b) of
    the Water Quality Act of 1987 coupled with the
    stated policy objective set forth in Section lOl(a)(3)
    of the CWA
    prohibiting “the discharge of toxic pollutants
    in toxic amounts”
    support its certification of the proposal as being federally
    required.
    ISG has responded in detail to the Agency’s position on this
    issue
    (PC #10 at 10—19).
    ISG asserts that the proposed narrative
    standard is not federally required and that the requirements of
    the CWA may be satisfied by adopting specific numeric criteria
    for priority pollutants of concern to Illinois pursuant to option
    two of the USEPA guidance document
    (Ex 46).
    ISG notes that,
    according to the guidance document,
    the narrative standard may be
    used as a supplement to options one and two but
    it
    is not
    required.
    Moreover,
    ISG argues that even when a narrative
    standard is used it
    is limited to “toxic pollutants
    ‘the
    discharge or presence of which
    in affected waters could
    reasonably be expected to interfere with those designated uses
    adopted by the State, as necessary to support such designated
    use’,
    33 U.S.C.
    §l313(c)(2)(B)”
    (PC #10 at 11).
    ISG contends
    that the Agency’s proposal goes beyond this federal requirement
    by regulating non—priority pollutants.
    Lastly,
    ISG disputes the
    Agency’s reliance upon the policy objective of Section lOl(a)(3)
    of the CWA as a basis
    for asserting that the proposed regulations
    are federally required.
    Consistent with its position that the narrative standard
    portion of the Agency’s proposal is not federally required,
    ISG
    suggests that the Board split the docket in this matter.
    ISG
    proposes that the Board proceed only with adoption of the
    specific numeric standards set forth
    in Section 302.208 and
    postpone action on the narrative standard.
    The Board disagrees with ISG’s contention that the
    regulations proposed by the Agency are not federally required.
    ISG’s interpretation of the USEPA guidance document
    is
    inconsistent with USEPA’s stated position on whether
    it views the
    Agency’s proposed regulations
    as being required by federal law.
    Section 303(c)(2)(B)
    of the Water Quality Act
    of 1987
    requires that states adopt specific numeric criteria for all
    “priority pollutants” and where numeric standards are not
    available states “shall adopt criteria based on biological
    monitoring or assessment methods consistent with information
    published pursuant to Section 304(a)(8).”
    (33 U.S.C.
    102—34 1

    —14—
    S13l3(c)(1)(B).)
    Only where a state expects that a pollutant
    will not interfere with the designated use
    is the state excused
    from deriving a numeric standard for that pollutant
    (Ex.
    46 at
    3).
    However, nothing
    in the Act restricts the right
    of a state
    to adopt numeric criteria for any pollutant not listed in Section
    307(a)(1)
    (Ex.
    46 at
    5).
    The USEPA specifically opines that “an effective State water
    quality standards program should include both the chemical
    specific
    ...
    and narrative approaches
    (Ex.
    46 at
    2).
    By
    supplementing option two with option three,
    “a State would have
    formally adopted numeric criteria for those toxic pollutants of
    frequent occurrence
    ...
    and would also have a sound and
    predictable method
    to develop additional numeric criteria as
    needed.
    This combination of options provides a complete
    regulatory scheme”
    (Ex.
    46 at
    10).
    Where option two is supplemented with option
    3,
    states must
    provide an opportunity for public participation
    (Ex.
    46
    at
    10).
    Additionally,
    states must adopt
    a “specific procedure to be
    applied to narrative water quality criteria”
    (Id).
    Furthermore, USEPA reiterated this position
    in a
    correspondence dated July
    3,
    1989
    from Kenneth A. Fenner,
    Chief
    of
    the Water Quality Branch, USEPA Region V,
    to James
    B.
    Park,
    Manager of the Agency’s Division of Water Pollution Control
    (Ex.
    75).
    This letter provides that
    “the statutory commitments for
    toxic provisions
    in State rules go beyond simply adopting numeric
    criteria”
    (Ex.
    75).
    Rather,
    a complete regulatory scheme
    includes both formally adopted numeric criteria for toxic
    pollutants of frequent occurrence and sound and predictable
    methods to develop additional criteria as needed
    (Ex.
    75).
    Furthermore,
    the “adoption of numeric criteria does not subrogate
    the necessity of
    a narrative policy:
    Sjuch
    a policy
    is needed to
    insure waters of the State are protected from toxicity when
    numeric criteria may not
    be sufficient
    to provide such
    protection”
    (Ex.
    75).
    Section 28.2(b)
    of the Act provides that “whenever
    a
    required rule
    is needed,
    the Board shall adopt a rule which fully
    meets
    the applicable federal
    law.”
    The USEPA has made clear that
    it interprets
    the CWA as mandating that Illinois adopt water
    toxic regulations
    no later than February
    4,
    1990
    (Ex.
    75).
    The
    only regulations received by the Board propose both the adoption
    of specific numeric standards
    for known
    toxic pollutants and a
    narrative standard for newly discovered toxic substances.
    Based
    upon the foregoing an~lysisof the CWA and USEPA guidance
    document
    (Ex.
    46), we conclude that
    the regulations as proposed
    by
    the Agency and modified herein are federally required.
    A matter correlative to the above—discussed issue should be
    dispensed with at this time.
    On May
    12,
    1989,
    ISG filed
    a Motion
    1fl2-3~2

    —15—
    for Sanctions.
    ISG requested that the Board impose sanctions
    upon the Agency for its failure to identify those portions of the
    proposed rule which are federally required as directed by the
    Hearing Officer
    in an Order
    of January 13,
    1989.
    ISG asserted
    that the Agency’s “Certification and Brief
    in Support of the
    Certification of Proposed Revisions” did not adequately respond
    to this inquiry.
    The Agency’s certification provides that both the specific
    numeric standards and the narrative standard are required by
    Section 303(c)(2)(B) of the Water Quality Act of
    1987 and
    Sections lol(a)(3),
    303(c)(l) and 303(c)(2)(A)
    of the CWA (Ex.
    44).
    Above, we noted our agreement that the proposed regulations
    are federally required.
    We also find that the Agency’s
    certification adequately responded
    to the Hearing Officer Order
    of January 13,
    1989.
    Therefore,
    ISG’s Motion
    for Sanctions is
    denied.
    Alleged Unlawful Delegation of Rulemaking Authority
    Concerns have been raised that the Subpart
    F procedures
    proposed by the Agency for deriving narrative criteria constitute
    an improper subdelegation of the Board’s
    rulemaking authority to
    the Agency.
    (see:
    R.
    11/18/88 at
    224; 12/6/89
    at 296—97;
    12/7/89
    at
    539,
    554—59;
    2/17/89 at
    933; 6/13/89 at 66—67,
    74,
    94—101,
    110,
    115—16; PC #11
    at
    3—9;
    PC #10 at 21—24).
    Pursuant to
    Subpart
    F,
    the Agency calculates various “water quality criteria”
    based upon a detailed series of procedures
    for those new
    substances which are not limited by a specific numeric
    standard.
    Objectors to the narrative standard assert that
    it
    constitutes an improper delegation of the Board’s rulemaking
    authority because the Agency rather than the Board derives the
    numeric criteria.
    Such objections ignore the essential
    distinction between a standard and a criterion.
    The standard
    proposed here
    is “no toxic substances in toxic amounts.”
    Criteria derived by the Agency under the narrative standard
    procedure merely operate as a means of defining the standard of
    “no toxicity” for a given substances or combination of
    substances.
    The Board recognizes
    its sole authority under the Illinois
    Environmental Protection Act
    to promulgate regulations
    (Ill.
    Rev.
    Stat.
    1987,
    ch.
    1114,
    pars.
    1005 and 1027).
    As proposed by the
    Agency and modified by the Board, criteria derived under the
    narrative standard procedures do not rise to the level of
    standards.
    The Board does not view the Subpart
    F procedures as
    constituting an improper delegation of
    its rule—making authority
    to the Agency.
    Opponents of the narrative criteria generally seem to agree
    that its application
    is permissible in the permit setting.
    Where
    a criterion is included as,
    or
    is used to derive,
    a condition of
    102—343

    —16—
    an NPDES permit,
    the regulations proposed today provide that a
    person may challenge the general validity and correctness of
    application of such criterion (see,
    Section 302.210(f)).
    The
    Agency bears the burden of going forward with proof and
    persuading the Board that the criterion is valid and applies to
    that person.
    When viewing the application of the narrative criteria as a
    general water standard concerns of improper delegation of
    authority and lack of notice arise.
    However, the narrative
    criteria proposed by the Agency, and as modified
    in the instant
    proposal, has
    a special limited role.
    Exceeding
    a criterion does
    not
    in and of
    itself constitute
    a violation of the
    “no toxicity
    standard”.
    Viewed in terms of a possible enforcernentaction for
    violation of
    a general water quality standard, the Agency would
    be required
    to prove that
    a respondent violated the standard of
    no toxicity.
    Where alleged violation of the toxicity standard
    is
    based upon an alleged excursion of
    a criterion,
    the person
    bringing the enforcement action has the burden of going forward
    with proof and of persuading
    the Board of the general validity
    and correctness of application of the criterion
    (Id).
    Based upon the foregoing,
    it
    is clear
    that exceeding a
    criterion would not necessarily result
    in an automatic finding of
    violation.
    Respondent may defend against the application of such
    a criterion by challenging whether the Agency properly followed
    the procedures of Subpart
    F,
    as well as challenging the data
    relied upon by the Agency
    in calculating the numeric criterion.
    The Agency would be required to justify its procedures,
    particularly
    in those
    instances where unusual species or extreme
    exposure times were relied upon.
    Based upon its assertion that the narrative standard
    constitutes an improper delegation of the Board’s rulemaking
    authority,
    IERG has suggested that the Board adopt regulations
    dove—tailing
    the adjusted standard provisions and NPDES permit
    process
    (R.
    64—86;
    PC #12).
    Given the above—stated rejection of
    this “improper delegation argument”,
    the Board finds
    no need to
    implement IERG’s suggested approach.
    Participants have also expressed concern over the lack of
    notice of criteria derived under
    the narrative standard
    procedures.
    As we noted previously, some of the anticipated
    discomfort
    stemming from use of
    a narrative criteria should
    be
    eased by the enumeration of
    the detailed procedures
    to which
    the
    Agency must adhere
    in deriving the criteria.
    This procedure
    allows interested person to anticipate what constitutes
    a “toxic
    amount” of
    a substance not listed
    in Section
    302.208.
    When
    viewed
    in the context of an enforcement action,
    the
    “compliance
    inquiry letter”
    (Ill.
    Rev.
    Stat.
    1987,
    ch.
    1114, par.
    1031(d))
    which requires the Agency to inform
    a person of the charges
    alleged prior
    to issuing
    a complaint,
    may serve as a form of
    102—344

    —17—
    notice by identifying
    the criterion allegedly exceeded.
    The
    opportunity for public participation
    is provided at the
    enforcement hearing.
    Moreover,
    the proposed regulations provide
    that no enforcement action may be brought for violation of the
    toxicity standard based upon an excursion of a criterion if that
    criterion has not either been applied in the alleged violator’s
    NPDES permit or
    been published in accordance with Section 302.669
    (see,
    Section 302.210(f)).
    Admittedly,
    the narrative standard approach suffers from an
    inherent element of uncertainty.
    However,
    the advantages far
    outweigh the disadvantages.
    The instant proposal attempts to
    deal with another
    “lack of notice problem” by requiring that the
    Agency publish a list of toxicity criteria derived pursuant to
    Subpart
    F
    (see Section 302.669).
    EcIS Submittal
    Section 28.2(d)
    of the Act provides
    in pertinent part that
    if the EcIS
    is not submitted
    to the Board
    with
    a
    six month period,
    the Board may
    proceed to adopt a required rule without an
    EcIS.
    If the Board notifies the Department
    that it will proceed
    to adopt a required rule
    without an EcIS,
    DENR
    need not complete
    the EcIS.
    To the extent possible...the
    Board shall conduct a hearing on the economic
    impact of the proposed required rule.
    DENR’s enabling statute,
    in a provision codified at Ill.
    Rev. Stat.
    ch.
    964, par.
    7404, goes on
    to provide that
    if a rule
    is required pursuant to Section 28.2,
    if the
    EcIS
    is not completed within six
    months...DENR
    shall submit to the Board
    information concerning the status of the
    study,
    economic data that has been compiled
    during the six month period,
    and a full
    rationale
    for why the study has not been
    submitted.
    As aforementioned, DENR timely filed some economic
    information, and announced its intention to file additional
    information in mid—November.
    In its transmittal letter, DENR
    included an explanation of the EcIS status and rationale
    for why
    a complete study had not been submitted.
    As
    to the EcIS status, DENR explained that,
    “this installment highlights the key
    methodological distinctions, identifies the
    102—34 5

    —18—
    universe of affected facilities,
    and analyzes
    discharger compliance under existing and
    proposed rules governing toxic releases to
    receiving waters of the State.
    A subsequent
    installment will translate the ability of
    subject point sources to comply under either
    control regime into economic and environmental
    costs and benefits”.
    DENR notes that a contract has been let
    for completion of this
    work,
    scheduled for completion in mid-November.
    DENR suggests
    that this and other economic information could be considered
    during November hearing days previously reserved by the Hearing
    Officer.
    DENR asserts that difficulty
    in completion of an EcIS
    in
    this proceeding flow from the fact that RES 89—1 did not
    implement one of
    SB 1834’s amendments to Section 27(a),
    that
    which specifies,
    “To aid the Board
    in determining whether an
    economic impact study
    is needed and
    to assist
    the public in determining which facilities
    will be impacted,
    the person filing a proposal
    shall describe,
    to the extent reasonably
    practicable,
    the universe of affected sources
    and facilities and the economic impact of the
    proposed rule.”
    DENR asserts
    that,
    In the instant docket,
    no information on
    either affected sources or
    economic impacts
    was submitted with the proposal for
    rulemaking.
    Under such circumstances,
    it
    is
    virtually impossible
    to complete an EcIS
    in
    the abbreviated period specified by SB 1834.
    It
    is worth noting that when SB 1834 was
    crafted,
    the Department’s support for
    the six—
    month deadline was predicated on an
    elaboration of the filing requirements
    to
    include economic information.
    Yet,
    in this
    case,
    the Department
    is required
    to expedite
    the completion of
    its analysis, without
    a
    correlative obligation imposed on the
    proponent
    to buttress
    its suggested
    regulation.
    •Since the EcIS was initiated,
    the
    ENP
    staff have met several times with Agency
    personnel
    to obtain critical data.
    While the
    Department has made significant progress
    in
    assimilating the information provided,
    it
    is
    not possible
    at
    this juncture to finally
    102—346

    —19—
    estimate the costs and benefits of the
    proposed regulations.
    The Board appreciates the difficulty which DENR has
    experienced relative to the tightness of the deadline here
    involved and the contents of the Agency’s proposal, as the Board
    has been laboring under similar constraints.
    However, questions
    concerning the identity of impacted facilities were raised early
    on
    in this proceeding,
    and the Board has no reason to believe
    that since that
    time the Agency has not provided information “to
    the extent reasonably practicable.”
    The entire thrust
    of Section
    28.2’s exceptions
    to the general rulemaking requirements of
    the
    Act
    is to require that rulemaking proceed on the basis
    of what
    information can be gathered within the time constraints of
    applicable federal deadlines.
    While
    it could be argued that the
    Agency should have been aware of the desireability prior
    to the
    filing of its proposal,
    this record contains no information
    detailing any practical difficulties the Agency may have
    encountered during the period
    in which
    it was crafting the
    proposal following adoption of the CWA amendments mandating the
    instant proceeding,
    and the Board will not engage
    in speculation
    that the Agency has been other than diligent
    in this matter.
    DENR’s proposed timetable for the completion of
    its second
    EcIS installment poses
    real practical difficulties
    to timely
    completion of this rulemaking.
    As outlined in the July 12
    Hearing Officer Order, given the APA 45 day
    second notice period,
    the Board must adopt
    a second notice Order
    no later than December
    6, but preferably
    in late November,
    if rules are
    to be
    in effect
    by February
    4,
    1990.
    The days which have been reserved for
    hearing, November
    6, 7,8, were chosen as the latest days on which
    hearing could be held which did not involve multiple schedule
    conflicts among agency personnel and major participants and which
    would allow for expedited receipt of transcripts and a very brief
    post—hearing comment period.
    Any information which cannot be
    presented to the Board on or before November
    17,
    1989 cannot
    practically be considered by the Board
    in this proceeding;
    information which
    is not presented at the November
    6,
    7, and
    8
    hearings and which
    is therefore not subject to cross questioning
    must be afforded lesser weight than that which is.
    Given these constraints, DENR may wish to consider
    this
    Opinion a formal notification pursuant to Section 28.2(d)
    that
    the Board will proceed to adopt these
    rules without the second
    installment of the EcIS
    if
    it cannot be presented on or before
    November
    17,
    for the purposes of determining whether
    it wishes to
    complete the second installment.
    Publication of First Notice
    Section 28.2(f)
    of the Act by its terms requires first
    notice publication of proposed federally required rules in the
    102—347

    —20—
    Illinois Register no later
    than six months after Board
    determination whether an EcIS should be conducted;
    as the Board
    has sixty days in which to make its EcIS determination after
    accepting
    a proposal for hearing, this publication must be made
    within
    8 months of a proposal’s acceptance.
    This requirement
    could not be literally met
    in this proceeding, as
    it assumes that
    an Agency certification would be filed contemporaneously with a
    proposal, and that the Board would be making the determination
    made by DENR here,
    in RES 89—1 the Board stated that
    it would
    construe the Section as requiring publication within six months
    of the Agency certification;
    this would have been August
    9.
    However, as the Board was led to anticipate the filing of a
    fourth amended Agency proposal on or about that date,
    and further
    anticipated adoption of its own first notice proposal reasonably
    soon thereafter,
    we deferred first notice publication.
    The
    proposal contained
    in the Board’s Order today encompasses close
    to fifty pages of
    text.
    As explained in some detail below,
    the
    Agency’s proposal even as amended August
    9 contains much material
    which does not comport with substantive and technical
    requirements of
    the APA, and clearly would not have been accepted
    by the Administrative Code Unit for publication due
    to
    the
    deficiencies.
    Today’s proposal will appear
    in the Illinois
    Register approximately seven months following the Agency’s
    certification, one month in advance of the required publication
    of
    a proposal filed after
    the effective date of Section 28.2.
    Thus, while there is arguably a technical violation of Section
    28.2(e),
    the Board believes this action
    is consistent with the
    intent of the Section during this “phase
    in”
    of
    its requirements,
    and results
    in publication of the proposal the Board actually
    contemplates adopting.
    COMPARISON OF CURRENT VERSUS PROPOSED REGULATIONS
    DENR has prepared
    a report titled “Analysis
    of Proposed
    Revisions
    to Subtitle C Toxics Control
    Program:
    Pollution Control
    Board Docket R88—2l.
    Hearing Copy”
    (“DENR report”), filed with
    the Board on August
    9,
    1989.
    Chapter
    2 of this report
    includes
    comparisons of existing
    regulations
    for control of water toxics
    with the February
    9,
    1989 version of the Agency’s proposal.
    These comparisons appear
    to be valid in all regards,
    excluding
    only minor changes made
    by the Agency within
    its August
    9,
    1989
    version or made by the Board as discussed herein
    (see
    “Modifications
    to Agency Proposal”, below).
    Accordingly,
    the
    interested person
    is directed to the DENR
    report for
    a general
    overview of this subject.
    One comparison warrants
    repeating here,
    however.
    That
    is
    the comparison between the numeric General Use Standards found at
    existing and proposed Section
    302.208.
    The proposed General Use
    Standards fall
    into one of
    five categories.
    102—348

    —21—
    The first category consists of chemical constituents for
    which the current standard
    is replaced by standards for both
    acute and chronic toxicity,
    and which are based on the ambient
    hardness of the water.
    The chemical constituents are cadmium,
    trivalent chromium, copper, and lead.
    For each of these chemical
    constituents toxicity has been demonstrated to be dependent on
    hardness
    (Ex.
    5,
    7,
    9 and 11
    ),
    and accordingly the standard
    is
    defined as a function of the ambient hardness.
    In order
    to compare the current versus proposed standards
    for chemical constituents
    in this first category,
    it
    is necessary
    to specify ranges of hardness.
    In the following table the range
    of hardnesses used to show the possible range of values assumed
    by the standards is
    27 mg/l to 2500 mg/l.
    This apparently
    represents the extremes of hardnesses ever recorded in Illinois
    streams
    (DENR report at 2—il).
    In the following comparison,
    all
    standards are expressed in micrograms per liter
    (ug/l).
    Cd
    Cr(+3)
    Cu
    Pb
    Existing Standard
    50
    1000
    20
    100
    Proposed Standard
    Acute
    (range)
    2.2—50
    594—24,640
    5.2—375
    15—100
    Chronic
    (range)
    0.4—14
    71—2937
    3.9—188
    n.a.
    The second category consists of chemical constituents for
    which the current single—valued standard
    is replaced by standards
    for acute and/or chronic toxicity.
    These consist of arsenic,
    hexavalent chromium, cyanide,
    and mercury.
    The comparative
    standards,
    expressed in micrograms per liter
    (ug/l),
    are as
    follows:
    As
    Cr(+6)
    CN
    Hg
    Existing Standard
    1000
    50
    25
    0.5
    Proposed Standard
    Acute
    360
    16
    22
    0.5
    Chronic
    190
    11
    5.2
    n.a.
    It
    is to be noted that the cyanide standard is also proposed
    to be changed with respect
    to analytical method,
    as reflected in
    a change in STORET number.
    The existing cyanide standard
    is for
    total cyanide
    (STORET 00720), whereas the proposed cyanide
    standards
    for for weak acid dissociable cyanide
    (STORET number
    00718).
    The acceptance of this change
    is based upon
    recommendations from both the Agency
    (PC #8 at pars.
    27—25)
    and
    Sauget
    (R.
    6/14/89 at 309—11).
    The third category consists of a single chemical
    constituent,
    total residual chlorine,
    for which
    a toxicity
    standard
    is today specified for
    the first
    time.
    The proposed
    limits are 19 ug/1 as an acute standard and 11 ug/l as
    a chronic
    102—349

    —22—
    standard.
    The fourth category consists of those chemical constitutents
    for which no change in the existing standard
    is proposed.
    These
    chemical constitutents are:
    Barium
    Phenols
    Boron
    Selenium
    Chloride
    Silver
    Fluoride
    Sulfate
    Manganese
    Total Dissolved Solids
    Nickel
    Zinc
    The final category contains only the parameter iron.
    The
    Board has been requested
    to delete the iron standard by IERG and
    Commonwealth Edison
    (R.
    6/13/89 at 196—201).
    Although the Board
    finds some merit
    in the arguments presented,
    it does not believe
    that this matter has been sufficiently explored to fully support
    deletion of this standard.
    The Board will, however, propose such
    deletion for the purposes of first notice.
    The Board anticipates
    that the proponent of
    the deletion will further address the
    matter
    at hearing.
    MODIFICATIONS TO AGENCY PROPOSAL
    Today’s proposal includes numerous modifications of the
    Agency’s proposal.
    Most, but not all, of these are intended to
    be nonsubstantive.
    The modifications are based upon
    recommendations from various interested persons and upon the
    Board’s perspective.
    Discussion of the modifications
    is
    presented in this section
    in the general order
    in which they may
    be found
    in today’s proposal.
    Unless otherwise specifically
    noted, all modifications referenced are with respect to the
    Agency’s proposal filed August
    9,
    1989
    (PC
    #8).
    The Board also notes
    that there are
    likely some instances
    in
    which deletions have been made from the Agency’s proposal which
    have not been metioned or explained.
    General Formatting Changes
    Although the Agency’s proposal of August
    9,
    1989
    forms the
    basis of
    the proposal offered today, extensive edits have had to
    be made to the Agency’s proposal
    in an attempt
    to conform the
    text
    to drafting and formatting requirements of
    the APA and the
    Illinois Administratiye Code
    (1
    Iii. Adm. Code lOO.Subpart
    C).
    The strictly drafting and editing changes
    fall
    into the following
    general areas:
    1)
    “Proofreader edits” such as form of
    tables,
    indentation
    levels,
    and Administrative Code
    10
    2—3
    50

    —23—
    citation forms;
    2)
    Revision of existing language which the Agency
    has not sought to amend but
    is “antiquated” by
    today’s APA standards and which accordingly needs
    to be considered;
    3)
    Problems of incorporation by reference,
    particularly of test methodologies and procedures
    which are
    to be found in documents which are not
    federal regulations, guidelines,
    or standards,
    or
    guidelines of national organizations;
    4)
    vagueness problems caused by:
    a)
    Use of the passive voice,
    so that,
    for
    instance,
    it
    is unclear whether
    the Agency
    or some other person must “demonstrate x”;
    b)
    Lack of definition of terms such as “current
    methods” and “acceptable methodologies;
    C)
    Lack of specificity as to how a person goes
    about seeking Agency approval for deviation
    from general requirements;
    d)
    Lack of specificity as to whether an Agency
    determination is conclusive;
    and/or
    e)
    Variant use of commanding verbs, such as
    “shall”,
    “must”,
    “may”, etc.
    Most of these deficiencies were recognized by the Board and
    communicated to the Agency relatively early in this proceeding.
    As noted in the Procedural History discussion above,
    a prehearing
    conference was held on September
    28,
    1988 at the request of the
    Agency and IERG.
    In response thereto the Board noted by Order
    of
    October
    6:
    The Board is advised that there was inadequate
    time to discuss various staff concerns about
    the
    drafting of the rules and conformance with
    requirements of the Administrative Procedure Act
    (“APA”) and Illinois administrative law.
    These
    concerns include, but are not limited to, whether the
    proposed delegation to the Agency of authority to
    define and establish limits
    for various
    “criteria” by
    Agency
    rule,
    is an impermissible subdelegation of the
    Board’s
    rulemaking authority, uncertainty concerning
    procedural
    steps and appeal provisions, and potential
    APA problems such as formatting, vagueness,
    improper
    incorporations by reference and the like.
    102—35 1

    —24—
    The Board accordingly authorized the scheduling of another
    prehearing conference “to deal with these)
    drafting issues”.
    The conference was held on October
    14,
    1988.
    General drafting
    comments,
    as well as a copy of the Agency’s proposal with
    suggested editorial and format corrections, were prepared in
    memorandum form by Board staff and served upon the Agency and all
    persons on the notice list on October
    28,
    1989
    (Ex.
    77).
    Although some of the recommendations made in the memorandum have
    been incorporated by the Agency
    in later versions of the Agency’s
    proposal, many of them,
    including some of the most critical, have
    not been addressed by the Agency.
    Failure to correct deficiencies of these
    types can be fatal
    to a proposal during its review by the Board,
    Illinois
    Adminstrative Code Unit,
    or Joint Committee on Administrative
    Rules,
    or during appellate review.
    The Board has done
    its best
    to correct as many of these problems as possible during the
    limited time the most recent Agency proposal has been
    available.
    However, given the number
    of changes necessary,
    the
    Board
    is wary as to whether the proposal
    is yet capable of
    passing drafting and formatting muster.
    Nevertheless, given the
    exigencies of moving a proposal to first
    notice,
    the Board must
    decline
    to reject
    the proposal and trust that remaining
    deficiencies can yet be corrected.
    The number of drafting and formatting changes which the
    Board has introduced herein are too many to allow individual
    exposition.
    However,
    in the following sections of this Opinion
    the Board discusses those which it believes
    to be most salient,
    and particularly those which
    it believes may also go
    to the
    substance of the proposal.
    Section 301.106 Incorporations by Reference
    A
    new
    Section has been added at Section 301.106 for
    incorporations by reference used within Subtitle
    C.
    The
    reference inclusions
    in today’s proposal are directed solely
    to
    the subject matter of the instant proposal.
    However,
    Section
    301.106
    is set up such that
    it can also accommodate incoporations
    by reference for any future amendments
    to Subtitle C.
    The Board futher
    notes
    that
    this Section does not contain
    references
    to all of the various materials which
    the Agency has
    referred to in
    its August
    9 proposal, such as annual reports and
    monographs
    (Section 302.100) and journal articles
    (Section
    302.654(b)(2)).
    Section 6.02 of the APA allows
    for incorporation
    by reference without publishing the incorporated material
    in full
    only “rules,
    regulations standards and guidelines”
    of
    “an agency
    of the United States” or
    “a nationally
    recognized organization or
    association.”
    Further requirements are that
    the entity
    originally issuing the ~materialmake copies of the material
    102—352

    —25—
    readily available to the public and that the agency incorporating
    the material identify the material by location and date,
    incorporate no future amendments or editions, and maintain copies
    of all such material for inspection.
    Additionally,
    if
    incorporation is sought of guidelines or standards of an agency
    of the United States government,
    such incorporation must be
    approved in writing by the Joint Committee on Administrative
    Rules.
    The Board has included in this Section all material which
    it
    believes meets these requirements, and has deleted from the
    proposal references to documents which do not.
    Any materials
    which do not meet these requirements may be referenced only if
    they are set out in full as an appendix
    to the rules and filed
    with the Secretary of State.
    The Agency
    is invited to provide
    comment as to whether any such deleted references should be so
    treated, and to provide necessary copies.
    There is
    a difference
    in the method of incorporating
    Standard Methods and the ASTM standards.
    Standard Methods is a
    book which is completely revised every few years.
    The most
    recent edition,
    the 1985,
    16th Edition
    is cited.
    The 1989, 17th
    Edition will soon become available.
    On the other hand, ASTM
    standards are published as pamphlets as they are revised
    throughout the year, and the entire collection of current
    standards are published
    in an annual book.
    The Board has cited
    to the individual ASTM standards,
    rather than the entire
    collection.
    This avoids citing
    to extraneous material, and
    allows individual updating of standards.
    The alternative would
    require the perodic repurchase of the entire ASTM yearbook,
    a
    very expensive proposition.
    Section 301.107 Severability
    A general severability clause applicable to the whole of
    Subtitle C has been added at Section 301.107.
    This addition
    is
    made by the Board
    to conform Subtitle C with general regulatory
    drafting practice.
    Section 302.100 Definitions
    Several alternations to the definitions Section at 302.100
    have been made.
    The general purpose of
    these is to conform the
    Section with Illinois Administrative Code formatting and
    incorporations—by—reference requirements.
    Among the changes are:
    1)
    ASTM and Standard Methods citations to measurement
    procedures have been added to the definition of
    hardness.
    2)
    The definition of total residual chlorine (“TRC”~~
    proposed by the Agency and proposed to be modified by
    102—3 53

    —26—
    IERG (PC #12 at 1—2) has been modified to identify
    specific methods by which TRC is measured.
    This change
    is made
    to conform the definition to Illinois
    Administrative Code standards for incorporation by
    reference.
    3)
    The federal laws and publications listed in the Agency’s
    definition of “toxic substance” have been replaced by a
    single reference to
    40 CFR 302.4.
    40 CFR 302.4
    is
    a
    consolidated USEPA listing of substances listed pursuant
    to most of the federal statutes cited
    in the Agency’s
    proposal.
    The Board believes that the single reference
    therefore covers most,
    if not all, of
    the substances
    possibly of
    interest under the instant proposal.
    This change is made because the Illinois Administrative
    Code does not authorize the incorporation by reference
    of
    federal
    laws.
    Furthermore,
    a member
    of
    the public
    could not easily get from the statutory references
    to
    the
    listing,
    or discover that
    40 CFR 302.4
    is a
    consolidated listing.
    Moreover,
    the Agency proposal
    appears to contemplate incorporation of future listings,
    which is also prohibited under the Illinois
    Administrative Code.
    The Agency also proposed to reference two private
    listings,
    the National Toxicology Program listing and
    International Association
    for Research on Cancer
    listing, in the definition of “toxic substance”.
    The
    Illinois Administrative Code limits incorporation by
    reference to nationally recognized organizations and
    federal agencies.
    In the absence of
    a demonstration
    that the organizations are “nationally recognized”,
    the
    Board has not proposed
    to rely on
    them.
    Presumably,
    USEPA will take action on the listing of
    these
    organizations, and include the listings
    in
    40 CFR 302.4.
    4)
    The definition of
    ZID contains an explanation of the
    terms
    “immediate” and “rapid” based on the Agency’s
    discussion
    in its August
    29 Justification
    (p.
    2—3).
    The
    Board believes such further definition
    is needed to
    avoid JCAR objection.
    Comment on the appropriateness
    of
    the language choice
    is requested.
    External References
    in Section 302.101
    Corrected citations
    to the Parts external to Part 302 have
    been added in subsections
    (b)
    through
    (e).
    Section 302.102 Mixing
    Zones and ZIDs
    Section 302.102 has been broadly reorganized and altered.
    102—3 54

    —27—
    Organizational changes include referencing ZIDs in the Section
    title and aggregating the various restrictions which apply to
    mixing zones within subsection
    (b).
    The organizational changes
    have been made to enhance clarity of the proposed amendments
    without altering their content.
    The first sentence of subsection
    (a) contains a substantive
    modification.
    As Sauget points out
    (PC #11 at 10),
    the phrase
    “an opportunity shall be allowed for mixture”,
    as used in both
    the existing rule and the Agency’s proposal,
    is unnecessarily
    vague.
    The Board also believes that
    it may not be acceptable
    under APA standards.
    The sentence has been reworded to make
    clear that ZIDs and mixing zones are to be granted by the Agency
    as NPDES permit conditions pursuant to the limitations prescribed
    in subsection
    (b).
    Interested persons should also be aware that
    the restrictions of subsection
    (b)
    could,
    in special
    circumstances,
    limit a mixing zone to such a small size that
    its
    existence becomes academic.
    An example would be where
    a
    discharge
    is directly in an endangered species habitat
    (see
    Section 302.102(b)(4)).
    The Board notes that
    there are three sentences of a general
    philosophical nature in existing Section 302.102(a) which are
    today being recommended for deletion.
    These are the sentences:
    “The size of the mixing zone cannot be uniformily
    prescribed.”
    “The governing principle is that the proportion of
    any body of water
    or segment thereof within mixing
    zones must be quite small
    if the water quality
    standards are
    to have any meaning.”
    “This principle shall be applied on a case—by—case
    basis to ensure that neither any individual source
    nor the aggregate of sources cause excessive zones
    to
    exceed the standards.”
    In supporting the deletion of these sentences,
    the Board
    in
    no way
    is intending to imply repudiation of the
    ideas they
    express.
    To the contrary, the Board believes that the ideas
    contained therein remain fundamental underpinnings for applying
    and allowing mixing zones.
    Nevertheless, the sentences are being
    recommended
    for deletion because, although acceptable under prior
    adminstrative law standards,
    they are not likely acceptable
    today.
    Additionally,
    the Board believes that the essence of
    these sentences has been retained within the general
    prescriptions of Section
    302.102(b).
    The various portions of subsection
    (b) have been drawn from
    the following sources:
    102—355

    —28—
    Section 302.l02(b)(l)
    Agency Proposal, Modified
    (b)(2)
    Agency Proposal, Modified
    (b)(3)
    Agency Proposal
    (b)(4)
    Agency Proposal
    (b)(5)
    Agency Proposal
    (b)(6)
    Existing 302.102(c)
    (b)(7)
    Existing 302.102(c), Modified
    (b)(8)
    Existing 302.102(c), Modified
    (b)(9)
    Existing 302.102(a)
    (b)(lO)
    Existing 302.102(a)
    (b)(ll)
    Agency Proposal, Modified
    Subsection
    (b)(l)
    is built on the premise advanced by the
    Agency,
    with which the Board concurs,
    that a mixing zOne should
    be no larger than would be required to accomodate an optimally—
    designed outfall structure.
    The burden of providing the most
    efficient mixing should be on the discharger.
    If the discharger
    chooses to provide for less than the optimum mixing,
    the
    discharger should not be able
    to claim a larger mixing zone as a
    result.
    Accordingly, subsection
    (b)(l)
    limits
    the mixing zone
    to
    a size equivalent
    to that which would be needed to accomodate an
    optimally—designed outfall.
    Subsection
    (b)(2)
    is substantially the Agency’s
    recommendation regarding tributary mouths,
    except that
    it focuses
    on restriction of movement of aquatic life between tributary and
    main stream rather than the narrower “migrating”
    of aquatic life.
    Subsections
    (b)(7) and (b)(8)
    are substantially the second
    and third sentences of existing subsection
    (c).
    However, they
    have been modified to clarify that the strictures apply
    to
    combinations of mixing zones as well as
    to single mixing zones.
    This provision is consistent with the general philosophy of
    mixing zones
    (see above)
    Subsection
    (b)(ll)
    contains the provision that no mixing
    zone may encompass a
    surface area greater than 26 acres.
    The
    Board is well aware of
    the controversy which has surrounded this
    issue.
    The Board nevertheless believes that there must be
    some
    upper limit to the size of mixing zones.
    A mixing zone
    is,
    afterall,
    a portion of
    a water body where
    less
    than optimum water
    quality
    is allowed
    to exist based upon striking of
    a balance
    between the costs of environmental control and the quality of
    the
    environment.
    Accordingly,
    there must be some upper
    limit
    to the
    size of mixing zones where
    the balance runs so contrary
    to the
    interests
    of the environment that
    a line has
    to be drawn.
    The
    Board believes that the Agency’s proposal of a 26—acre upper
    limit
    is
    an
    appropriafe
    place
    to
    draw
    the
    line.
    The
    vast
    majority of discharges
    in Illinois should be
    readily able to
    accomodate
    to this limit.
    The few who may believe that
    a larger
    limit
    is necessary and
    justified for
    their particular
    circumstances are, as always,
    free to plead
    their case before the
    102—356

    —29—
    Board
    in an adjusted standard or site—specific proceeding.
    Subsection
    (c), which deals with ZID5,
    is proposed herein
    essentially as proposed by the Agency.
    However,
    the phrase
    “If
    circumstances warrant” has been deleted, consistent with deletion
    of the similar
    language in subsection
    (a)
    (see above),
    and
    it
    is
    made clear
    that ZIDs are granted as NPDES pent conditions.
    Section 302.101(d) makes clear that procedures
    for
    application,
    review, and appeal
    of ZIDs and mixing zones are the
    same as those
    for NPDES permits generally.
    The Board lastly notes that question has been raised as to
    whether the Agency would intend ever
    to allow mixing zones or
    ZIDs
    in envrionments where the effluent constituted most or all
    of the stream flow (i.e.,
    7Q10 of zero).
    The Agency
    is requested
    to comment on this matter.
    Section 302.208 Chemical Constituents
    1)
    Sufficiency of Four Samples
    in CS demonstration
    The second sentence
    in Section 302.208(b) has been altered
    to read:
    The samples used to demonstrate compliance or lack of
    compliance with a CS must be collected in a manner
    which assures an average representative of the four
    day period.
    The Agency’s language
    read:
    A sampling schedule must be arranged to ensure that
    the average value achieved is representative of the
    entire monitoring period.
    This change
    is intended solely to address drafting deficiencies
    in the Agency’s version.
    2)
    Applicability of AS and CS
    in Mixing Zones
    The first part of
    Section 302.208(c)
    regarding mixing zones
    has been rewritten to
    read:
    “Where a mixing zone has been
    delineated pursuant to Section 302.102,
    the following apply:”.
    Similarly,
    the phrase “where approved by the Agency”
    has been
    deleted from 302.208(c)(1).
    Both changes are necessary to
    conform Section 302.208 to Section 302.102
    (see above).
    3)
    Tables of General Use Standards
    The format of
    the amendments to Section 302.208 has been
    102—357

    —30—
    slightly altered.
    The format herein consists of the deletion of
    the entire existing Section 302.208 and its replacement by the
    text of the Agency proposal.
    It
    is believed that this formatting
    follows the accepted Administrative Code Unit style.
    It
    is to be
    emphasized that no substantive changes are intended to flow from
    this formatting change, other than those argued by the Agency.
    In particular,
    the Board intends no change in the standards for
    those constitutents found in subsection
    (e).
    In addition to the overall
    formating change to this Section,
    some internal format changes have been made within the subsection
    (d)
    table.
    These are principally intended to conform the
    contents
    to Administrative Code Unit form and to allow fitting of
    the table beneath the textual portion of subsection
    (d).
    No
    substantive changes are intended to accompany the formatting
    changes.
    The term “total residual chlorine” has also been replaced by
    its abbreviation, TRC,
    as defined
    in Section 302.100.
    The Board
    also notes
    that the
    “A” constant for the cadmium acute standard
    appears
    to differ from that in the guidance document.
    The
    Agency’s comment
    is requested.
    Subpart
    F:
    Procedures
    for Determining Water Quality Criteria
    Subpart
    F has been extensively edited
    in an attempt
    to
    conform it
    to Illinois Administrative Code practice.
    Among
    changes which have been made are:
    (1) elimination of all
    superscripts and subscripts,
    (2) elimination of vague adjectives
    and adverbs,
    such as
    “appropriate”, “reasonably”,
    “adequately”,
    etc.,
    (3)
    revisions of capitalization and other punctuation,
    (4)
    elimination of passive—voice constructions were practical,
    and
    (5) elimination of improperly cited incorporations by
    reference.
    More specific alterations
    to Subpart
    F are discussed
    below.
    Section 302.604 Mathematical Abbreviations
    A new Section,
    302.604, has been added
    for the purpose of
    specifying mathematical conventions and abbreviations used within
    Subpart
    F.
    Section 302.606 Modification
    The Agency’s Section 302.606 has been rewritten.
    As
    proposed by the Agency,
    this Section was unacceptable under
    the
    Illinois Administrative Code.
    The Board has reworded
    it
    in an
    attempt
    to make
    it conform with
    the Illinois Administrative Code,
    but solicits comment.
    102—358

    —31—
    Sections 302.612 and 302.627
    The reference to “modified USEPA procedures” has been
    deleted because of lack of clarity.
    Reference has been made to
    the Sections where procedures are set forth.
    Sections 302.615, 621,
    630 Substitution of Species
    Subsection 302.615(b)
    in the Agency’s proposal contained
    language regarding substitution of species where data on non-
    resident species
    is unavailable,
    as follows:
    If data are not available for resident species, data
    for non—resident species, upon approval by the
    Agency, may be substituted species.
    This language
    is unacceptable to the extent that
    it fails to
    specify the criteria upon which approval will
    or must be granted
    by the Agency.
    Accordingly,
    the sentence has been replaced by
    the following:
    If data are not available for resident or
    indigenous
    species, data for non—resident species which most
    closely resemble resident or indigenous species with
    respect to taxonomic level, habitat and environmental
    tolerance may be substituted.
    Similar language difficulties occur
    in the Agency’s proposal
    at both Section 302.621(b) and 302.630(b).
    In both places the
    following language:
    Three species must be tested initially, and these
    must represent species from ecologically diverse taxa
    to the extent possible.
    The exact species
    to be
    tested must be determined by the Agency on a
    case—by—case basis with the objective of using
    resident or representative species.
    has been replaced with:
    Three species must be tested initially.
    These
    species must be resident or indigenous species and
    must exhibit ecological diversity.
    If data are not
    available for resident or indigenous species, data
    for non—resident species which most closely resemble
    resident or
    indigenous species with respect to
    taxonomic level,
    habitat and environmental tolerance
    may be substituted.
    Section 302.615 Calculation of
    GMAVs
    The phrase “The following procedure” has also been deleted
    102—359

    —32—
    from Section 302.612(b)
    to remove the ambiguity of this
    reference.
    The Board assumes that the “following procedure”
    refers
    to the procedure of Section 302.615.
    Sections 302.615
    (f)
    and
    (g) have been broadly rewritten in an attempt at
    clarification.
    Section 302.627 Determining the Chronic Aquatic Toxicity
    Criterion for an Individual Substance
    General Procedures
    In the absence of specific acute/chronic
    ratios,
    Section
    302.627(d)
    provides a default mechanism by which the CATC must be
    calculated by dividing the FAV by
    a factor of
    25.
    However,
    Exhibit
    55, which was a study of the Illinois Aquatic toxicity
    database,
    indicates that the factor by which
    the FAV must be
    divided
    is a value of 154
    (after standardizing chronic data
    obtained from short—term embry—larval/early life tests)
    or
    a
    value of
    116
    (using raw data).
    Comments are requested on this
    issue and the Board asks
    for
    reason as
    to why the Board should
    not adopt
    a default value
    for the Acute/Chronic ratio of between
    100
    to 150 in Section 302.627(d).
    Section 302.645 Deletion
    of ADI Method
    The first “method” for determining ADI has been deleted, as
    it
    is simply a list of values published by USEPA.
    However,
    the
    method by which those values are calculated
    in embodied
    in the
    second and third method which uses the maximum contaminant or
    allowable levels.
    Section 302.654 Journal Citation
    The Agency proposal referenced a 1984 journal article by
    Crump at Section 302.654(b).
    The Illinois Administrative Code
    prohibits the use of
    journal articles
    in this manner.
    Furthermore,
    there
    is reason to believe that
    the method has
    evolved since 1984.
    The Board therefore proposes
    to reference
    to
    tJSEPA’s
    “Mutagenicity and Carcinogenicity Assessment
    of 1,3—
    Butadiene”
    as
    a model for how to accomplish
    the low—dose
    carcinogenic risk assessment as used in the Crump article.
    The
    Board would prefer
    to cite a “how-to” manual,
    if one can be found
    in a format acceptable under
    the
    Illinois Administrative Code
    (i.e., published by a federal agency or nationally recognized
    standards organization).
    The Agency proposal also cited a notice of availability of
    a
    water quality criteria document at
    45 FR 79318, November
    28,
    1980.
    This
    is inadequate
    in that one would have
    to go to the
    notice
    to get the reference to the actual document.
    Moreover,
    the actual document
    is probably now out—of—date and out—of-
    print.
    The Board has therefore instead referenced
    to a more
    recent version,
    “Quality Criteria for Water 1986”, whLch
    is
    currently available
    to the public.
    Hopefully,
    it includes the
    102—360

    —33—
    information in the earlier document.
    Section 302.633 Kow
    The Board has referenced ASTM E 1147 as a standard method
    for measuring the n—octanol/water partition coefficient
    (“Row”)
    at Section 302.663.
    Section 302.669 Listing of Derived Criteria
    The Board has modified the Agency’s proposal for listing of
    derived criteria
    to require updating at least quarterly,
    and also
    to require publication of such lists
    in the Illinois Register.
    The purpose of this requirement
    is enhancement of public access
    to and awareness of such criteria.
    Section 303.362 Horseshoe Lake Discharges
    The Board
    is incorporating a new Section 302.362
    as
    recommended by the ISG (PC #10 at
    4)
    for discharges
    from Granite
    City Division of National Steel Corporation (“GCD”)
    to Horseshoe
    Lake
    (R.
    at
    376—81;
    Exh. 69;
    PC #10, Attachment
    #3).
    This
    Section specifies that
    the GCD discharges are allowed a mixing
    zone and ZID of the maximum allowable size.
    Phrasing of the
    Section has also been tightened—up relative to the ISG proposal,
    but without change to the intent of the ISG proposal.
    The Board
    is including this Section for First Notice, but questions whether
    it should not be deleted since this could be handled through the
    permit
    system.
    Section 305.102 Clean Water Act References
    The existing language at Section 305.102(a)
    contains a large
    number of references to the Clean Water Act.
    These are
    essentially
    a restatement
    of the scope of the permit requirement
    under Part 310,
    as adopted by the Board in R86—44.
    The Clean
    Water Act references have been translated into State law in the
    definition of “industrial user”
    at
    35
    Ill. Adm. Code 310.110,
    and
    the 15
    load requirements are the same.
    Rather than repeat this
    in Section 305.102(a),
    Part 310
    is referenced.
    The existing language at Section 309.152(a) also references
    standards “established under Section 307(a)
    of the CWA for
    a
    toxic pollutant”.
    Because the instant proposal appears
    to be
    implementing Section 307(a)
    in the new Subpart
    F,
    the Board has
    referenced Subpart F instead, avoiding the possible complexities
    of federal references.
    Part 309 External References
    Subsections 309.103(b)
    and
    (c) have been amended to provide
    correct citation
    to rules outside of Part 309.
    Although these
    102—361

    -34-
    amendments do appear
    in the Agency most recent proposal
    (PC
    #8 at
    proposal p.
    28),
    they do not appear
    in the form required for
    amendments
    to existing language.
    IT IS SO ORDERED.
    J.D. Dumelle concurs.
    I,
    Dorothy M.
    Gunn, Clerk of the Illinois Pollution Control
    Board, hereby certif~,that the above Opinion was adopted on
    the
    ~
    day of
    ____________,
    1989,
    by a vote of
    ~‘~)
    ~.
    orothy M. ~nn,
    Clerk
    Illinois Pd~1utionControl
    Board
    102—362

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