ILLINOIS POLLUTION CONTROL BOARD
    July 22, 1999
    IN THE MATTER OF:
    SDWA UPDATE, USEPA REGULATIONS
    (July 1, 1998, through December 31, 1998)
    )
    )
    )
    )
    )
    R99-12
    (Identical-in-Substance Rulemaking -
    Public Water Supplies)
    Adopted Rule. Final Order.
    OPINION OF THE BOARD (by R.C. Flemal):
    Under Section 17.5 of the Environmental Protection Act (Act) (415 ILCS 5/17.5 (1998)),
    the Board adopts amendments to the Illinois regulations that are “identical in substance” to the
    National Primary Drinking Water regulations (NPDWRs) adopted by the United States
    Environmental Protection Agency (USEPA). These regulations implement sections 1412(b),
    1414(c), 1417(a), and 1445(a) of the Safe Drinking Water Act (SDWA), 42 U.S.C. §§ 300g-1(b),
    300g-3(c), 300g-6(a), and 300j-4(a). The nominal timeframe of this docket includes SDWA
    amendments that the USEPA adopted in the period July 1, 1998, through December 31, 1998.
    However, this docket also considers a correction taken after December 31, 1998, on which the
    Board is acting without delay. The USEPA took four actions during the nominal timeframe
    period that necessitate Board action. The federal SDWA regulations are found at 40 C.F.R. 141
    and 142.
    The final rule adopted today includes major revisions to the program for relief from
    NPDWRs, including additional mandatory requirements for, among other things, small system
    variances; introduction of entirely new requirements for consumer confidence reports, including
    expansive public notification requirements about potential health threats; adoption of new
    maximum contaminant levels (MCLs) to be phased in for disinfection and disinfectant byproducts;
    and addition of interim enhanced surface water treatment rules to improve control of
    microbiological pathogens while addressing risk trade-offs with disinfection byproducts.
    Section 17.5 provides for quick adoption of regulations that are “identical in substance”
    (IIS) to federal regulations that the USEPA adopts to implement sections 1412(b), 1414(c),
    1417(a), and 1445(a) of the SDWA. Section 17.5 also provides that Title VII of the Act and
    Section 5 of the Administrative Procedure Act (APA) (5 ILCS 100/5-35 & 5-40 (1998)) do not
    apply to the Board’s adoption of IIS regulations.
    FEDERAL ACTIONS CONSIDERED IN THIS RULEMAKING
    The USEPA amended the federal SDWA regulations six times during the period of
    July 1, 1998, through December 31, 1998. Four of these amendments necessitate action by the
    Board. Those actions are summarized as follows:

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    63 Fed. Reg. 43833 (August 14, 1998)
    The USEPA adopted amendments that revised variances and exemptions. In addition to
    revising existing language for state-issued variances and exemptions, the rule adds
    procedures and conditions under which a state may issue small system variances to public
    water systems (PWSs) serving less than 10,000 persons.
    63 Fed. Reg. 44511 (August 19, 1998)
    The USEPA amended the public notice regulations to include consumer confidence
    reporting requirements as required under the SDWA Amendments of 1996. The rule
    requires a PWS to provide its customers with annual reports on the quality of delivered
    water and health risks imposed by any detected contaminants.
    63 Fed. Reg. 69390 (December 16, 1998)
    The USEPA adopted disinfectant and disinfection byproducts rule amendments to the
    National Primary Drinking Water regulations (NPDWRs). The new NPDWRs are for
    three disinfectants, two groups of organic disinfection byproducts, and two inorganic
    disinfection byproducts. The NPDWRs consist of maximum residual disinfectant levels,
    maximum contaminant levels, or treatment techniques for these disinfectants and their
    byproducts. The NPDWRs also include monitoring, reporting, and public notification
    requirements for these compounds.
    63 Fed. Reg. 69477 (December 16, 1998)
    The USEPA adopted interim enhanced surface water treatment rule amendments. The
    purposes of the rule are to improve control of microbial pathogens and to address risk
    trade-offs with disinfection byproducts. Key provisions of the rule include 99%
    Cryptosporidium removal requirements for systems that filter, strengthened turbidity
    standards, requirements for covers on new water reservoirs, and sanitary surveys for all
    surface water systems. The rules add a new requirement allowing the Illinois
    Environmental Protect Agency (Agency) to direct a source to conduct a composite
    correction plan.
    Later SDWA Amendments of Interest
    The Board monitors federal actions on an ongoing basis. As of the date of this opinion
    and order, the Board has identified one USEPA action since December 31, 1998 that further
    amends the SDWA primary drinking water rules. Two other USEPA corrective actions are
    pending, and the Board includes those pending amendments in today’s rule. The Board identified
    the following federal actions since the December 31, 1998 end date of the present update docket
    R99-12:
    64 Fed. Reg. 34732 (June 29, 1999)
    The USEPA adopted corrections to the August 19, 1998 (63 Fed. Reg. 44511) “consumer
    confidence reports” regulations. The amendment corrects several typographical errors in
    the previous amendment.

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    Pending Fed. Reg. Publication
    The USEPA proposed revisions to the interim enhanced surface water treatment rule
    (IESWTR) and the Stage 1 disinfectants and disinfection byproducts rule (DBPR). The
    proposed amendment consists of technical corrections to the two rules.
    Pending Fed. Reg. Publication
    The USEPA proposed revisions to National Primary Drinking Water Regulations for
    disinfectants and disinfection byproducts, and interim enhanced surface water treatment;
    Revisions to State Primacy Requirements to Implement SDWA Amendments. The
    proposed amendment consists of correcting amendments.
    When the Board observes an action outside the nominal timeframe of a docket that would
    require expedited consideration in the pending docket, the Board will expedite consideration of
    those amendments. Federal actions that could warrant expedited consideration include those that
    directly affect the amendments involved in this docket, those for which compelling considerations
    would warrant consideration as soon as possible, and those for which the Board has received a
    request for expedited consideration.
    The Board will expedite consideration of these amendments in this docket R99-12. The
    June 29, 1999 amendments and the proposed amendments are corrective rather than substantive.
    None of the amendments appear to impose any new or additional burdens on regulated entities.
    PUBLIC COMMENTS
    The Board adopted a proposal for public comment in this matter by order dated May 6,
    1999. “Notices of Proposed Amendments” appeared in the May 28, 1999 issue of the
    Illinois
    Register
    . The Board accepted public comments on the proposal for a 45 day period following
    publication in the
    Illinois Register.
    The comment period expired on June 21, 1999.
    The Board received four comments during the public comment (PC) period. Those
    comments are as follows:
    PC 1
    June 10, 1999 letter from David S. Horak, State Project Officer, Water Division,
    USEPA Region V (received June 10, 1999).
    PC 2
    July 1, 1999 letter from David S. Horak, State Project Officer, Water Division,
    USEPA Region V (received July 1, 1999).
    PC 3
    July 12, 1999 letter from Lou Allyn Byus, Assistant Manager - Field Operations,
    Division of Public Water Supplies, Illinois EPA (received July 12, 1999).
    PC 4
    July 12, 1999 letter from Stephen C. Ewart, Deputy Counsel, Illinois EPA
    (received July 14, 1999).

    4
    In PC 1 and PC 2, the USEPA submitted comments and suggestions for revisions to the
    language of the May 6, 1999 proposal for public comment. Many of the USEPA’s suggested
    corrections and revisions are minor and do not warrant discussion. Several are more substantive
    and require discussion. The substantive discussion prompted by PC 1 and PC 2 appears in the
    appropriate segment of the detailed discussion that begins below. All of the revisions prompted
    by the USEPA’s comments appear in the table that begins on page 20 of this opinion. Suggested
    revisions that the Board has not accepted appear in the table on page 33 of this opinion.
    In PC 3, the Agency submitted comments and suggestions for revisions to the language of
    the May 6, 1999 proposal for public comment. Many of the Agency’s suggested corrections and
    revisions are minor and do not warrant discussion. Several are more substantive and require
    discussion. The substantive discussion prompted by PC 3 appears in the appropriate segment of
    the detailed discussion that begins below. All of the revisions prompted by the Agency’s
    comments appear in the table that begins on page 20 of this opinion. Suggested revisions that the
    Board has not accepted appear in the table on page 33 of this opinion.
    In addition to the public comments, the Board also received a document from the Joint
    Committee on Administrative Rules (JCAR) entitled “Identical First Notice Line Numbered
    Version.” This document contains those changes that JCAR made prior to the May 28, 1999
    publication of these amendments in the
    Illinois Register
    . The changes accepted by the Board are
    listed in the table entitled, “Revisions to the Text of the Proposed Amendments in Final
    Adoption,” that begins at page 20 of this opinion. The changes not accepted by the Board,
    together with a brief explanation, appear in the table entitled, “Requested Revisions to the Text of
    the Proposed Amendments Not Made in Final Adoption,” beginning at page 33.
    The Board adopts these amendments, having first made the changes necessitated by public
    comment. The complete text of the adopted amendments appear in a separate order adopted this
    day.
    DISCUSSION
    The following discussion begins with a description of the types of deviations the Board
    makes from the literal text of federal regulations in adopting IIS rules. It is followed by a
    discussion of the amendments and actions undertaken in direct response to the federal actions
    involved in this proceeding. This discussion is organized by general considerations and federal
    subject matter, which generally appear in chronological order of the significant
    Federal Register
    notices involved. Descriptions of the amendments and actions that are not directly derived from
    the federal actions are included in the subject matter discussion beginning at page 6.
    General Revisions and Deviations from the Federal Text
    When incorporating the federal rules into the Illinois system, some minimal deviation from
    the federal text is unavoidable. This deviation arises primarily through differences between the
    federal and state regulatory structure and systems. Some deviation also arises through errors in
    and problems with the federal text itself. The Board conforms the federal text to the Illinois rules

    5
    and regulatory scheme and corrects errors that it sees in the text as the Board engages in these
    routine IIS rulemakings.
    In addition to the amendments derived from federal amendments, the Board often finds it
    necessary to alter the text of various passages of the existing rules as provisions are opened for
    update in response to the USEPA’s actions. This involves correcting deficiencies, clarifying
    provisions, and making other changes that are necessary to establish a clear set of rules that
    closely parallel the corresponding federal requirements within the codification scheme of the
    Illinois Administrative Code.
    The Board updates the citations to the
    Code of Federal Regulations
    to the most recent
    version available. As of the date of this opinion, the most recent version of the
    Code of Federal
    Regulations
    available to the Board is the July 1, 1998 version. Thus, the Board has updated all
    citations to the 1998 version, adding references to later amendments using their appropriate
    Federal Register
    citation, where necessary.
    The Board substituted “or” for “/” in most instances where this appeared in the federal
    base text, using “and” where more appropriate. The Board further used this opportunity to make
    a number of corrections to punctuation, grammar, spelling, and cross-reference format throughout
    the opened text. The Board changed “who” to “that” and “he” or “she” to “it,” where the person
    to which the regulation referred was not necessarily a natural person, or to “he or she,” where a
    natural person was evident; changed “which” to “that” for restrictive relative clauses; substituted
    “shall” for “will;” capitalized the section headings and corrected their format where necessary; and
    corrected punctuation within sentences.
    In addition, the federal rules have been edited to establish a uniform usage throughout the
    Board’s regulations. For example, with respect to “shall,” “will,” and “may”, “shall” is used when
    the subject of a sentence has a duty to do something. “Must” is used when someone has to do
    something, but that someone is not the subject of the sentence. “Will” is used when the Board
    obliges itself to do something. “May” is used when choice of a provision is optional. “Or” is
    used rather than “and/or,” and denotes “one or both.” “Either .
    . . or” denotes “one but not
    both.” “And” denotes “both.”
    JCAR has requested that the Board refer to the United States Environmental Protection
    Agency in the same manner throughout all of our bodies of regulations—
    i.e.
    , air, water, drinking
    water, RCRA Subtitle D (municipal solid waste landfill), RCRA Subtitle C (hazardous waste),
    underground injection control (UIC), etc. The Board has decided to refer to the United States
    Environmental Protection Agency as “USEPA.” The Board will continue this conversion in this
    and future rulemakings as additional sections become open to amendment. The Board will further
    convert “EPA” used in federal text to “USEPA,” where the USEPA is clearly intended.
    The Board has assembled tables to aid location of these alterations and to briefly outline
    their intended purpose. The tables set forth the miscellaneous deviations from the federal text and
    corrections to the pre-amended base text of the rules in detail. The tables are set forth and
    explained toward the end of this opinion, beginning at page 20. There is no further discussion of

    6
    most of the deviations and revisions elsewhere in this opinion. Some alterations, on the other
    hand, are more significant, and substantive discussion is warranted for those. Those more
    significant discussions are set forth in the following topical discussions.
    General Considerations Used In Assessing Federal Amendments for Inclusion in Illinois’ IIS Rules
    The Board will examine and discuss each of the four federal rulemakings below, detailing
    which portions of the federal regulations are being adopted verbatim, which are being adopted
    with modifications, and which are being omitted. Prior to doing so, however, the Board will
    make some introductory remarks to establish the context for today’s adopted rule.
    The federal actions that underlie this proceeding require amendment of the Illinois SDWA
    regulations. However, not all of the federal amendments resulted in corresponding change in the
    Illinois rules, since some segments of the federal amendments extend beyond the scope of the
    Illinois SDWA rules adopted pursuant to Section 17.5 of the Act. 415 ILCS 5/17.5 (1998).
    Section 7.2 of the Act establishes the ground rules for the Board’s exercise of its IIS
    mandate. It contains a lengthy and detailed list of concerns which the Board must take into
    account when comparing newly adopted federal rules to the Board’s existing drinking water rules
    codified at 35 Ill. Adm. Code 600
    et seq.
    , 415 ILCS 7.2 (1998). The following is a summary of
    some of the commonly encountered considerations.
    When assessing federal amendments in the course of completing our SDWA regulation
    updates, the Board includes all of the USEPA amendments to 40 C.F.R. 141, and the Board
    evaluates the amendments to 40 C.F.R. 142 for their effect on the substance of the NPDWRs. If
    the USEPA amendments to 40 C.F.R. 142 affect little more than the state primacy requirements,
    i.e.
    , they constitute requirements on the State only, the Board does not include them in the
    affected SDWA update docket. In contrast, if the amendments affect the application of the
    NPDWRs on public water systems, the Board includes amendments that incorporate that effect
    into the Illinois SDWA rules.
    Section 7.2(a)(5) of the Act requires the Board to specify which decisions the USEPA will
    retain. 415 ILCS 5/7.2 (1998). In addition, the Board is to specify which State agency is to make
    decisions, based on the general division of functions between the Board, Agency, and other
    entities within the Act and other Illinois statutes. 415 ILCS 5/7.2 (1998).
    In situations where the Board has determined that the USEPA will retain decision-making
    authority, the Board has replaced “Regional Administrator” or “Administrator” with “USEPA,”
    so as to avoid specifying which office within the USEPA is to make a decision.
    Sometimes the federal language underlying the IIS rules merely indicates that the State
    agency is to make the decision, not making a distinction between the Board and Agency decision-
    making authorities. To determine the general division of authority between the Agency and the
    Board, the Board examines:

    7
    1.
    Whether the person making the decision is applying a Board regulation, or taking
    action contrary to “waiving” a Board regulation. Generally a Board action is
    needed to “waive” a Board regulation.
    2.
    Whether there is a clear standard for action such that the Board can give
    meaningful review to an Agency decision.
    3.
    Whether the action would result in exemption from the permit requirement itself.
    If so, Board action is generally required.
    4.
    Whether the decision amounts to “determining, defining or implementing
    environmental control standards” within the meaning of Section 5(b) of the Act. If
    so, it must be made by the Board.
    Regulatory Relief Mechanisms: Sections 611.111, 611.112, and 611.131 (Variances and
    Exemptions)
    Overview
    The USEPA adopted amendments to the variance and exemption regulations on
    August 14, 1998. The amendments revise existing regulations regarding variances and
    exemptions, and include procedures and conditions under which the State may issue small system
    variances. The Board directs attention to the August 14, 1998 issue of the
    Federal Register
    for a
    more complete discussion of the federal amendments. The Board’s discussion here will focus on
    our incorporation of those amendments into the Illinois SDWA regulations. The Board is also
    amending the existing sections regarding relief (Sections 611.111 and 611.112) to more
    accurately reflect the federal statutory scheme of Sections 1415(a)(1)(A) and (B) and 1416 of the
    SDWA.
    Section-by-Section Analysis
    Relief from MCLs and Treatment Techniques (Sections 611.111 and 611.112). The
    substance of 40 C.F.R. 142.20(a) and (b) is included in today’s rule in amended Section 611.111
    and Section 611.112. The intent of the Board’s introductory amendments to these sections is to
    describe how the Board grants State relief equivalent to that available from the USEPA under
    Section 1415(a)(1)(A) and (B) and Section 1416 of the SDWA. Neither SDWA Section 1415
    variances nor Section 1416 exemptions require ultimate compliance within five years in every
    situation. Illinois variances under Sections 35-37 of the Act require compliance within five years.
    415 ILCS 5/35-37 (1998). Therefore, the introductory amendments to Section 611.111 and
    611.112 explain that a PWS may file a petition for a variance, a site-specific rule, or an adjusted
    standard. See also PC 1 at 1.
    In response to the USEPA’s comments, the Board notes several housekeeping measures
    that have been taken. See PC 1, PC 2. The Board is not adding a Table H to the rule. Best
    available technology (BAT) is identified in Subpart F, not in Subpart G, as erroneously contained

    8
    in the previous versions of the rule. These errors are corrected in today’s rule. Typographical
    errors are also corrected.
    The Board has differentiated the relief available for MCL’s and treatment techniques in
    Section 611.111 of the final rule because of different justifications for relief, requirements, and
    schedules of compliance for the two standards. In regulating relief from an MCL in Section
    611.111(b) and relief from a treatment technique in Section 611.111(c), the Board makes clear
    the distinct requirements for granting relief from each of the separate standards.
    Among the amendments to Section 611.111 is Section 611.111(b)(1), where a PWS, in
    justifying relief under the Section, must demonstrate that it will install or has installed BAT,
    treatment technique, or other means that the Agency finds available. Previously, a PWS had to
    install BAT before relief could be granted. See amended Section 611.111(b)(1). Also, the
    USEPA correctly comments that the language the Board originally struck “during the period
    ending on the date compliance with such requirement is required,” is statutory. PC 1 at 1, PC 2 at
    2. The Board inadvertently struck this language in the first-notice proposal and includes it in the
    final rule.
    One of the significant changes to Section 611.111 is found at amended Section
    611.111(b)(3)(B). If the Board prescribes a schedule of compliance regarding an MCL for relief
    granted later than five years from the date of issuance of the relief, the Board will document the
    rationale for the extended schedule, discuss the rationale in the public notice and public hearing,
    and provide the shortest time schedule feasible. This amendment coincides with federal
    amendment to State-issued variances and exemptions. See amended 40 C.F.R. 142.20(a).
    The Board deletes the definition of “unreasonable risk to health level” in Section
    611.111(f). The use of the term is no longer found in the NPDWRs. The USEPA’s comment
    stated that the definition should appear in the Illinois regulations. See PC 1 at 1, PC 2 at 2.
    However, the term is not used in the Illinois Administrative Code or in the
    Code of Federal
    Regulations
    under Primary Drinking Water Regulations. The term “unreasonable risk to health”
    is a term of art, and the Board will define it relying on the facts presented to it, on a case by case
    basis.
    In Section 611.111(c), the Board differentiates the requirements for relief from a
    treatment technique requirement. Again, the justifications and conditions required for such relief
    from a treatment technique are separate and distinct from those required for relief from an MCL.
    See amended Section 611.111(c) and Section 1415(a)(1)(B) of SDWA.
    The Board will hold at least one public hearing for any requested relief. See amended
    Section 611.111(d) and Section 611.112(e). The Board is requiring a hearing in all cases in which
    a PWS seeks relief from a NPDWR, as opposed to only an opportunity for hearing. This
    requirement makes the Illinois regulations more stringent than the federal regulations.
    The Board amends Section 611.111(g) and Section 611.112(h) to provide that in addition
    to the other requirements in Section 611.111 and 611.112, respectively, the provisions of Section

    9
    611.130 or 611.131 may apply to the relief granted. PC 1 states that the USEPA was “unsure” of
    this amendment. PC 1 at 2, 3. The purpose of this language is to notify a PWS that a small
    system variance may be available in lieu of relief under these two Sections, and that special
    requirements under Section 611.130 may apply.
    The USEPA commented that in Section 611.112(b)(1), the existing Illinois language did
    not include a factor for justification of relief when a system was unable to comply with an MCL,
    “to implement measures to develop an alternative source of water supply.” PC 1 at 2, PC 2 at 3.
    This is required statutory language which the Board adds at this time. In Section 611.112(b)(4),
    in addition to the language the Board added for first-notice proposal, the Board is adding the
    additional language, “or, if compliance cannot be achieved, improve the quality of the drinking
    water.” This language is statutory language of the SDWA.
    The Board Note for Section 611.112(b)(4) addresses the USEPA’s comment that the
    regulation concerning management and restructuring changes does not include discussion of the
    various available funds to states. PC 1 at 2, PC 2 at 2. The consideration of the available funds is
    a requirement on the State only, and as such the specific programs need not be included in the
    regulation. See 40 C.F.R. 142.20.
    The USEPA made several comments concerning the proposed language of Section
    611.112(d). PC 1 at 2, PC 2 at 3. As a result, the Board is deleting the current rule’s language
    that “no schedule of compliance shall extend more than 12 months after the date of the relief.”
    This provision was deleted from SDWA Section 1416(b)(2)(A)(ii), as noted by the USEPA. PC 1
    at 2. The Board adds language that “but not later than three years after the otherwise applicable
    compliance date established in Section 1412(b)(10) of the SDWA.” See amended Section
    611.112(d).
    The Board in Section 611(d)(1) is deleting the rule’s current language that “[t]he Board
    may extend the date for a period not to exceed three years beyond the date of the variance,”
    which is not federal language. See PC 1 at 2. The Board adds “[n]o relief may be granted unless”
    the PWS establishes that it is taking all practicable steps to meet the NPDWR. This added
    language is found in Section 1416(B) of the SDWA and in 40 C.F.R. 142.50(b).
    Another amendment to Section 611.112(d)(2) changes one of the exceptions to the
    general rule of Section 611.112(d). Specifically, Section 611.112(d)(2) provides that a PWS that
    serves 3,300 or fewer persons may, in certain circumstances, extend the compliance schedule for
    one or more additional two year periods, but not exceeding a total of six years. See Section
    611.112(d)(2). The amendment changes the number of persons a PWS serves from 500 or fewer
    service connections to 3,300 or fewer persons. The Board originally proposed a four-year limit
    on the extensions so that it would be within the five-year limit on variances. That limitation is not
    necessary since relief can also be obtained in a site-specific rulemaking or an adjusted standard.
    The Board also adds subsection (d)(3) to Section 611.112. This states that “[a] PWS may
    not receive relief under this Section if the PWS was granted relief under Section 611.111 or
    611.131.” This statutory language is necessary. See PC 1 at 3.

    10
    Small System Variances (Section 611.131). The substance of new 40 C.F.R. 142 Subpart
    K is incorporated into today’s rule as Section 611.131, Relief Equivalent to SDWA Section
    1415(e) Small System Variance. The question and answer format utilized in the federal rule has
    been dispensed with in the new Illinois rule because the question and answer format does not
    conform with Illinois Administrative Code requirements. The format has been changed to be
    consistent with the Board’s regulations by changing the question to a title of a Section and the
    answer to the substance of the Section.
    The substance of 40 C.F.R. 142.301 is included as Section 611.131(a), and generally
    indicates what relief is available from and the size of systems entitled to the relief afforded by the
    procedures in Section 611.131. A PWS must file a variance petition pursuant to 35 Ill. Adm.
    Code 104.
    The substance of 40 C.F.R. 142.302 is not included in the rule, because it addresses the
    power to issue such variances and is not necessary for this rulemaking. The substance of 40
    C.F.R. 142.303 is included as Section 611.131(b) and further delineates the relief available based
    on the size of the system. The substance of 40 C.F.R. 142.304 is included as Section 611.131(c)
    without significant changes, and the Note to 40 C.F.R. 142.304(b)(1) is included as the Board
    Note to Section 611.131(c).
    The substance of 40 C.F.R. 142.305 is included as Section 611.131(d), and explains when
    a small system variance may be granted by the State. The provision directing the USEPA to act
    on the variance petition within 90 days is not included, as it is not directed at a PWS or the Board.
    The substance of 40 C.F.R. 142.306 is included as Section 611.131(e). In subsection (e),
    the Board sets forth the requirements the PWS must prove and document before a small system
    variance can be granted by the Board. In the federal rule, a state must find and document that the
    requirements have been met before the variance may be granted by the Board. This procedure is
    in keeping with the other variance procedures which are available to a PWS.
    The substance of 40 C.F.R. 142.307 is included as Section 611.131(f), which includes
    minimum terms and conditions that the Board must impose in the small system variance. The
    Board does not include a reference to Section 1412(b)(15) of the SDWA. The small system
    variance technology developed and published in that section is referenced in Section
    611.131(e)(3). The Board also does not include the reference to 40 C.F.R. Part 141 monitoring
    requirements as it is unnecessary to include the cross-reference in the State rule. The monitoring
    requirements of 40 C.F.R. Part 141 are already included in Part 611 Subparts K, L, M, N, O, P,
    and Q. The Board adds the Board Note to subsection (f)(2)(C) in response to the USEPA’s
    comment in PC 1 at 2. 40 C.F.R. 142.307(c)(3) requires a state to review a small system variance
    pursuant to a subsection that the Board does not add to the final rule. See 40 C.F.R. 142.307(d).
    The federal regulation requires a schedule of review not less often than every five years. Section
    36 of the Act provides that five years is the maximum term of a variance. 415 ILCS 5/36 (1998).
    The result is that the regulations are more stringent than the federal regulations.

    11
    The substance of 40 C.F.R. 142.308 is included as Section 611.131(g). The notice and
    public hearing is pursuant to 35 Ill. Adm. Code 104. In addition to requirements under 35 Ill.
    Adm. Code 104, there are specific requirements for the PWS to notify billed customers and
    persons regularly served. Notice must be given by the PWS at least 30 days prior to the public
    hearing in Section 611.131(g)(1). The Board did not include a provision that a PWS must
    provide notice at least 15 days before the date of proposal. The Board’s opinion is that this
    provision is covered by the Board’s existing procedures under Sections 35-37 of the Act and 35
    Ill. Adm. Code 104. 415 ILCS 5/35-37 (1998). The Board has specific requirements for the
    publication of notice of hearing already in place and the Agency is required pursuant to Section 37
    of the Act to provide notice of variance petitions. More specifically, the Board’s notice of
    hearing must be published in the
    Environmental Register
    and in a newspaper of general
    circulation in the county in which the PWS is located. Also the Board’s final actions are
    published in the
    Environmental Register
    . The substance of 40 C.F.R. 142.308(d) is included in
    Section 611.131(g)(1). The substance of 40 C.F.R. 142.308(e) is not included in today’s rule.
    The Board finds that the notice provisions in the Act, this Section, and in 35 Ill. Adm. Code 104
    provide adequate notice to meet the requirements of 40 C.F.R. 142.308(e).
    The Board has included, in part, the substance of 40 C.F.R. 142.309 in today’s rule.
    Rather than use the federal phrase “Public meeting,” the Board is requiring that at least one public
    hearing be held on all petitions for variance brought pursuant to Section 611.131. This
    requirement is more stringent than the federal provision. In response to the USEPA’s comment
    (PC 1 at 3, PC 2 at 3), the Board finds that notice 30 days prior to a public hearing is more
    stringent than notice 15 days prior to the date of proposal, which the Board reads as the date of
    the granting of the small system variance. The Board does not include provisions equivalent to 40
    C.F.R. 142.309(b). This provision states that a small system variance must be made available to
    the public. The Board finds that proposals are already available for public inspection by Board
    rule as part of the public record regularly maintained by the Board, and thus, the Illinois rule is as
    stringent as the federal regulation. See PC 1 at 3.
    The substance of 40 C.F.R. 142.310 is included as Section 611.131(h). The Board has
    omitted both the provision requiring the USEPA to respond within 30 days has been omitted, and
    the USEPA’s right to object to a proposed variance, because these are not requirements on a
    PWS. The substance of 40 C.F.R. 142.312 is included, in part, in Section 611.131(i). The Board
    imposes the duty to forward the proposed variance to the USEPA on the Agency. The Board
    does not include the substance of 40 C.F.R. 142.313 in today’s rule, which deals with the
    USEPA’s review of the State’s program, because these regulations do not apply to a PWS.
    Consumer Confidence Reports: Section 611 Subpart U
    Overview
    The USEPA adopted its consumer confidence report (CCR) regulations on August 19,
    1998. The Board directs attention to the August 19, 1998 issue of the
    Federal Register
    for a
    more complete discussion of the federal amendments. The federal regulations have been amended

    12
    by adding 40 C.F.R. 141 Subpart O, the substance of which is added as 35 Ill. Adm. Code 611
    Subpart U.
    The CCR requirement applies to a community water system (CWS), defined as those
    supplying water to at least 15 service connections or 25 residents year-round. With some
    exceptions listed in Section 611.161, a CWS must deliver annual CCRs to its customers beginning
    October 19, 1999, with reports to be supplied annually every July thereafter. The reports must
    include information on the source and quality of the water delivered. If any contaminants are
    detected in the drinking water delivered to its customers, the CWS must provide them with
    written notice of the contaminant(s) detected, as well as a description developed by the USEPA
    of the health risks (if any) from exposure to the contaminant. Also, if the CWS has received relief
    from an NPDWR, it must include information about that in the report.
    The USEPA directed comments on the proposed rule concerning primacy issues for the
    CCR requirements. PC 1. The Board notes that it does not include Maximum Contaminant Level
    Goals (MCLGs) in its rules because these are not substantive requirements. However, as a result
    of substantive requirements on PWSs concerning reporting MCLs along with MCLGs in the
    CCR, the Board must add the definition of MCLG (See Section 611.101 and 611.883(c)); it must
    include a reference to MCLG in the definition of MCL (See Section 611.883(c)); and it must
    include the requirement that a PWS report MCLG in the same units as it reports MCL in a CCR
    (See Section 611.883(d)). The Board also adds MCLG in CCR units to Appendix F and MCLG
    to Appendix G Regulated Contaminants. The USEPA’s primacy revision crosswalk contained in
    PC 1 contains no other substantive comments on the CCR rule.
    The consumer confidence rule was amended in 64 Fed. Reg. 34732 by direct final rule.
    The Board incorporates these technical corrections to the final rule.
    Section-by-Section Analysis
    The substance of 40 C.F.R. 141.151 has been added as new Section 611.881. The
    detection limits for radioactive contaminants are found in 40 C.F.R. 141.25(c) and have no
    counterpart in the Board’s existing rules. Accordingly, the Board adds Section 611.720(c)(3) to
    give detection levels for radionuclides (radioactive contaminants) in table form. The definitions of
    “Inorganic contaminants” and “Radioactive contaminants” are added to the definitions found in
    Section 611.101.
    The Board does not include provisions relating to the adoption of alternative requirements
    for the form and content of a CCR because mechanisms for regulatory relief are already specified
    in Title VII “Regulations” and Title IX “Variances” of the Act.
    The Board adopts the compliance
    dates for delivery of the report found in 40 C.F.R. 141.152 in new Section 611.882. The Board
    does not include the first federal compliance dates of September 18, 1998, for existing CWSs or
    of April 19, 1999, for a CWS selling water to another, as those dates have passed. See
    611.882(a), (c).

    13
    The substance of 40 C.F.R. 141.153 is included as Section 611.883. The Board includes
    the MCLG definition for inclusion in a CCR in Section 811.883(c). Likewise, the definition of
    MCL includes the language that “MCLs are set as close to MCLGs as feasible.” The language
    concerning “variances” and “exemptions” in 611.883(g) has been slightly modified to reflect the
    Illinois scheme in the same manner as done in Section 611.111.
    The Board includes the substance of 40 C.F.R. 141.154 in Section 611.884. The Board
    has eliminated an option to reword certain language in Section 611.884(b), (c), and (d), making it
    a requirement that a PWS which detects certain contaminants must include the required language.
    The substance of 40 C.F.R. 141.155 is included as Section 611.885. Finally, the Board added
    new appendices to this Subpart. See Section 611.Appendix F, G, and H.
    Disinfectants and Disinfection Byproducts: Section 611 Subparts F and I
    Overview
    The USEPA adopted its disinfectants and disinfection byproducts (DBP) rule on
    December 16, 1998. The Board directs attention to the December 16, 1998 issue of the
    Federal
    Register
    for a more complete discussion of the federal amendments. These federal regulations are
    known as the Stage 1 disinfection byproducts rules. While various provisions are located
    throughout 40 C.F.R. 141 as detailed below, the bulk of them appear as new 40 C.F.R. Subparts
    F, H, and L. Most of the amendments to the Board rules appear in Part 611 Subparts F and I.
    The USEPA promulgated NPDWRs for three disinfectants (chlorine, chloramines, and
    chlorine dioxide), two groups of organic disinfection byproducts (total trihalomethane (TTHM)
    and haloacetic acids (five) (HAA5)), and two inorganic disinfection byproducts (chlorite and
    bromate). The NPDWRs consist of maximum residual disinfectant levels (MRDLs), MCLs, or
    treatment techniques. The NPDWRs also include monitoring, reporting, and public notification
    requirements for these chemicals. Larger systems (serving more than 10,000 persons) must
    comply with these requirements by January 1, 2002, while certain smaller systems have an
    additional two years in which to achieve compliance.
    The Board’s rule includes two definitions for terms that the federal regulations did not
    define. Specifically, the Board has included a definition for “Disinfection Byproduct” (DBP) and
    “paired sample.” See Section 611.101. The DBP definition was created from language in the
    preamble of the federal regulations for this rule. The “paired sample” language was created from
    the new Section 611.382, which was taken from the federal regulations.
    Throughout the rule, the term “Subpart B” systems is used in the place of the federal
    “Subpart H” systems. Subpart B systems are the public water systems which must meet the
    requirements of existing Subpart B and the analytical and monitoring requirements of Sections
    611.531, 611.532, 611.533, 611.Appendix B, and 611.Appendix C of this Part. The federal
    equivalent to these sections are located in the federal 40 C.F.R. 141 Subpart H.
    Section-by-Section Analysis

    14
    The substance of the definitions amended in 40 C.F.R. 141.2 are included in today’s rule.
    In a departure from the federal organization system, the Board does not include in the MRDL
    definition the explanation of when a PWS will be in compliance and applicable monitoring
    frequency. See Section 611.101; PC 1, PC 2 at 1. To minimize confusion to the regulated
    community, those standards for MRDLs are listed in Section 611.313 and compliance
    requirements are located in Section 611.383. The Board includes “Maximum Residual
    Disinfectant Level Goal” in this rule (Section 611.101). See PC 1, PC 2 at 1.
    The substance of 40 C.F.R. 141.12, which covers TTHMs, is included in this rule. The
    old MCL for TTHM is 0.10 mg/L. This level applies to Subpart B systems serving more than
    10,000 persons until January 1, 2002, and applies to systems using groundwater not under the
    direct influence of surface water until January 1, 2004. The Board added these compliance dates
    directly after the old MCL in Section 611.310. The new MCL is 0.08 mg/L and is located in new
    Section 611.312. The Board did not include the parenthetical sum of concentrations of chemicals
    that constitute TTHM because it is included in the definition of TTHM in Section 611.101. The
    substance of 40 C.F.R. 141.30 concerning compliance dates could not be proposed within a single
    section of Part 611. The Board included the compliance dates for the old TTHM MCL in new
    Section 611.688 (the new MCL and compliance date are in Section 611.312) and sunsets Sections
    611.680 through 611.688 by making them inapplicable after December 31, 2003. New Subpart I
    contains monitoring requirements for TTHM; the frequency of monitoring is indicated in Section
    611.Table J.
    The substance of the 40 C.F.R. 141.32 requirements dealing with violations of the MRDL
    for chlorine dioxide are included in Section 611.851. A PWS must give a copy of the most recent
    public notice to new billing units for any outstanding violation of a MRDL, as required in Section
    611.853. The new federal definitions (chlorine, chlorine dioxide, disinfection byproducts and
    treatment technique for DBPs, bromate, and chlorite) are added to Section 611.Appendix A.
    The Board does not include in the rule the State counterparts to the substance of the
    amendments to 40 C.F.R. 141 Subpart F. These federal amendments add MCLGs and MRDLGs
    for contaminants, and they are not included in the Board’s rules because they are not enforceable
    standards.
    The substance of 40 C.F.R. 141 Subpart G is included in Sections 611.312 and 611.313.
    The MCLs for DBPs are found in new Section 611.312, as is the new 0.08 mg/L MCL for
    TTHM. BAT for the disinfection byproducts is also found in Section 611.312. MRDLs are
    located in Section 611.313. The Board may grant an extension to the compliance deadline for an
    additional 24 months if a system is installing granular activated carbon (GAC) or membrane
    technology. The Board must set the schedule of compliance and may impose interim measures.
    Since the extension is a compliance extension, the Board believes it, rather than the Agency, has
    authority and must extend this date.
    The Board is adopting new Subpart I: Disinfectant Residuals, Disinfection Byproducts,
    and Disinfection Byproduct Precursors in the same format as found in the federal rule. The

    15
    federal counterpart is 40 C.F.R. 141 Subpart L. The new rule is found in Sections 611.380
    through 611.385.
    The substance of 40 C.F.R. 141.130 is found in Section 611.380 virtually unchanged. In
    making the substance of 40 C.F.R. 141.131 a part of today’s rule, the Board did not include an
    effective date for monitoring methods, because the effective date of compliance has passed. In
    response to the USEPA’s comments (PC 1, PC 2 at 2), the Board adds Section 611.380(a)(3),
    although this subsection does not impose any substantive requirements. The compliance dates are
    amended throughout Section 611.380 by proposed Revisions to the interim enhanced surface
    water treatment rule (IESTWR) and Stage 1 DBPR. See PC 3.
    In Section 611.381, the Board sets out the substance of the federal analytical methods for
    DBPs. Many documents referred to therein are incorporated by reference in Section 611.102.
    Section 611.102 has been updated to reference the 19th edition of “Standard Methods” and its
    “1996 Supplement.” The Board has placed the tables of approved methods for Disinfection
    Byproduct Compliance Monitoring and Disinfectant Residual Compliance Monitoring in new
    Sections 611.381(b)(1) and (c)(1). The Board omits the language set forth at 40 C.F.R.
    141.131(a)(1) regarding compliance monitoring. See PC 2. The Board may not include the
    language “unless otherwise approved by EPA for monitoring” because methods for compliance
    monitoring may only be approved by rulemaking, and not by Agency approval.
    The substance of 40 C.F.R. 141.132 is included as Section 611.382. Section 611.382
    contains the provision that systems may use data collected under the information collection rule
    (40 C.F.R. 141 Subpart M). There is no equivalent Illinois rule for Subpart M. However, the
    rule provides that if a system has conducted monitoring under the federal Subpart M, then the
    system may use that data collected. The Board retains the provision allowing the Agency to
    return a system to routine monitoring for TTHMs and HAA5 in Section 611.382(b). The Board
    adds language in Section 611.382(b)(1)(D) where “systems on increased monitoring may return
    to routine monitoring if the TTHM annual average is
    0.040 mg/L and the HAA5 annual average
    is
    0.030 mg/L.” This amendment was requested by the Agency (PC 3) and automatically lets a
    system return to routine monitoring if the level of the contaminant is one half of the MCL for that
    contaminant. Also included in the section is the provision that the Agency may return a system to
    routine monitoring. See Section 611.382(b)(1)(E). The Board notes that there are no federal
    criteria for this return. Nonetheless, the provision is included so that the final rule is as stringent
    as the federal rule.
    The substance of 40 C.F.R. 141.133 and 141.134 are made a part of today’s rule in
    Section 611.383 and Section 611.384, respectively. The Board retains the chart format in this
    Section which shows the information that must be reported for different types of systems. The
    USEPA added footnote 1 in Section 611.384(b), which appears to have been inadvertently
    omitted in the original federal rule, in its technical rule correction. The Board had added this
    footnote in its proposed rule. See PC 4.
    New Section 611.385 regulates treatment techniques for DBPs and includes the
    amendments to 40 C.F.R. 141.135. In Section 611.385(a)(2)(C) the Board gives the Agency

    16
    authority to determine if a system seeking to use the alternative compliance criteria has made a
    clear and irrevocable financial commitment prior to the deadline.
    In the enhanced softening requirements in Section 611.385(b), the Board delegates to the
    Agency the authority to make a determination and approve an alternate minimum total organic
    carbon (TOC) removal requirement. The Board also delegates to the Agency the authority to
    grant a waiver of enhanced coagulation requirements. This approach is similar to requesting a
    special exception permit. In Section 611.385 (b), the Board also includes the substance of 40
    C.F.R. 141.135 (b). The Board has identified the Agency as the entity to make two
    determinations. The rule provides that if the PWS cannot achieve the Step 1 TOC removal
    requirement due to water quality parameters or operational constraints, the Agency shall approve
    the use of the Step 2 TOC removal requirement. The rule also provides that if the TOC removal
    is consistently less than 0.3 mg/L of TOC per 10 mg/L of incremental alum dose at all dosages of
    alum (or equivalent addition of iron coagulant), the Agency shall grant the waiver of enhanced
    coagulation requirements.
    Interim Enhanced Surface Water Treatment: Subpart R
    Overview
    The USEPA adopted the interim enhanced surface water treatment rule on December 16,
    1998. The purpose of the rule is to improve control of microbiological pathogens and address
    risk trade-offs with disinfection byproducts. The Board directs attention to the December 16,
    1998 issue of the
    Federal Register
    for a more complete discussion of the federal amendments.
    The IESWTR applies to PWSs that use surface water or groundwater under the direct
    influence of surface water and serve 10,000 or more persons beginning December 31, 2001. The
    rule establishes or extends treatment techniques for certain contaminants in lieu of establishing
    MCLs. The contaminants involved are Giardia lamblia, viruses, herotrophic plate count bacteria,
    Legionella, Cryptosporidium, and turbidity.
    Key provisions of the rule include 99% (2-log) Cryptosporidium removal requirements for
    systems that filter, strengthened turbidity standards, requirements for covers on new water
    reservoirs, and sanitary surveys for all surface water systems. As addressed in detail in the
    Board’s May 6, 1999 proposal for public comment, the rule also adds a somewhat vague new
    provision allowing the Agency to direct a PWS to conduct a composite correction plan (CCP).
    Section-by-Section Analysis
    In the IESWTR, definitions amended in 40 C.F.R. 141.2 were added and amended in
    Section 611.101 definitions. “Groundwater under the direct influence of surface water” is now
    defined in Section 611.101. In Section 611.212(d), the Board includes Cryptosporidium as a
    pathogen without regard to the type of system in which the pathogen is found.

    17
    The provisions of 40 C.F.R. 141.32, with the reference to “Subpart P” in the language
    necessary in public notices concerning “Microbiological contaminants,” is added to Section
    611.Appendix A(10) as the Illinois equivalent, “Subpart R.”
    The text setting forth the 40 C.F.R. 141.52 MCLGs is not included in the Board’s final
    rule because it imposes no substantive requirements on the regulated community. The Board
    does not include the MCLGs for any contaminant in its rules because they have no substantive
    effect upon Illinois systems. See discussion
    supra
    p. 13 concerning MCLGs.
    The requirements in 40 C.F.R. 141.70 for systems serving more than 10,000 persons are
    found in new Section 611.220(d). Subpart R is the Illinois equivalent to federal Subpart P. The
    substance of the amendments in 40 C.F.R. 141.71 is included as Section 611.232(f). Under these
    amendments, systems must comply with the TTHM MCL found in Section 611.232 until
    December 31, 2001, if they do not use filtration. After that date, systems must comply with new
    requirements in the Board’s Subpart I.
    The substance of 40 C.F.R. 141.73 amendments are included in this rule in various
    locations. Beginning December 31, 2001, systems serving 10,000 persons must meet turbidity
    requirements and other filtration technologies in new Subpart R, Enhanced Filtration and
    Disinfection. This requirement is added to Section 611.250 Filtration. The provisions of 40
    C.F.R. 141.153 amend part of the new CCR, and the requirement imposed is found in Section
    611.883(4)(d).
    The substance of 40 C.F.R. 141 Subpart P is included in this final rule also as new Subpart
    R. It is a major revision affecting Subpart B systems that serve more than 10,000 persons. The
    provisions of 40 C.F.R. 141.170 contain the general requirements for enhanced filtration and
    disinfection effective January 1, 2002. The regulations extend treatment techniques in lieu of
    MCLs for certain contaminants, and are found in Section 611.740. The substance of amendments
    in 40 C.F.R. 141.171 concerning requirements when a PWS does not provide filtration are found
    in Section 611.741.
    In Section 611.742, the Board includes a provision requiring systems to develop a
    disinfection profile and benchmarking. The Board retains the provision that if a system collected
    data under 40 C.F.R. 141 Subpart M, information collection rule, then it must use the data
    collected to determine if disinfection profiling is required. In Section 611.742(b), the Board
    requires a system to develop its disinfection profile for a period of up to three years, and adds the
    provision that the Agency shall determine the period of the profile, with a minimum period of one
    year. See PC 3.
    In Section 611.742 (b)(3), the Agency determines whether operational data of a system
    and a profile generated using that data are substantially equivalent to data required to be collected
    in Section 611.742(b)(2). The Board has added a provision in Section 611.742(b)(3) that if the
    Agency determines that the data is substantially equivalent, the Agency must approve the request
    to use three years of existing operational data.

    18
    In Section 611.742(b)(5), the Board authorizes the Agency to approve methods to
    calculate the logs of inactivation of viruses for systems that use either chloramines or ozone for
    disinfection. Systems are required to consult with the Agency before making a significant change
    in disinfection practices.
    The substance of 40 C.F.R. 141.173 is included in today’s rule as Section 611.743. The
    rule authorizes the Agency to approve a protocol for systems using lime softening that acidify
    samples, and to approve filtration technology and set turbidity performance requirements. The
    Board believes the Agency may approve the protocols and filtration technology because neither
    requires the extension of a compliance date and there is a standard for decision ,
    i.e.,
    99%
    removal. The substance of 40 C.F.R. 141.174 is included at Section 611.744. The substance of
    40 C.F.R. 141.175 is included in Section 611.745.
    The Board does not include the substance of revisions to 40 C.F.R. 142.14 and 142.15
    because these sections deal with record and reporting requirements imposed on the State. The
    federal amendments to Section 142.16 deal with special primacy requirements for the State, and in
    most instances do not necessitate amendments to the Board’s rules. However, in 40 C.F.R.
    142.16(g)(1), the regulations require a state to have rules to implement a CCP. This requirement
    is addressed in some detail below.
    Composite Correction Program—Section 611.160
    On December 16, 1998 (63 Fed. Reg. 69520), as a segment of the interim enhanced
    surface water treatment rule (IESWTR), the USEPA added 40 C.F.R. 142.16(g)(1). This is a
    requirement that the state must have authority to require PWSs to conduct a CCP. The USEPA
    describes the CCP as having two aspects: (1) the comprehensive performance evaluation (CPE)
    and (2) the comprehensive technical assistance (CTA). In the CPE, the PWS undertakes a
    comprehensive review to identify its capabilities and practices that may be adversely affecting its
    ability to comply with the NPDWRs. The PWS implements a CTA if the CPE identifies potential
    areas for improvements. In the CTA, the system must identify facility-specific factors and
    implement operational changes to improve performance. As noted previously at page 3, the
    USEPA amended the CCP rule by final rule correction on June 29, 1999 (64 Fed. Reg. 34732).
    These typographical corrections are included in the Board’s final rule.
    The USEPA provided comments on the IESWTR Comprehensive Performance Evaluation
    Primacy Issue. PC 1. The proposed rule allowed a system to appeal to the Board the Agency
    decision requiring it to conduct a CCP or any follow-up recommendations as a result of the
    evaluation. The USEPA believed that the proposed rule was not as stringent as the federal
    regulation because a system could arguably appeal a CPE it was required to conduct pursuant to
    Section 611.745(b)(4). PC 1. The final rule provides for an appeal in all cases, “except when a
    CPE is required under Section 611.745(b)(4)” (due to turbidity). This change ensures that the
    final rule is as stringent as the federal regulation. It also allows for an avenue for appeal in the
    event the Agency requires a CCP in all other situations.

    19
    The Board addressed two issues in its May 6, 1999 Proposal for Public Comment. The
    first was whether these amendments are within the scope of the Board’s IIS mandate. The second
    was under what circumstances may the Agency require a CCP, since there are no stated federal
    criteria for such a program. No comments were received on either issue. The Board concludes
    that for the reasons given in its May 6, 1999 opinion that the CCP requirements are within our IIS
    authority
    The final rule requires the Agency to render its determination in writing, as it would render
    a permit decision under Section 39 of the Act. See 415 ILCS 5/39 (1998). An Agency
    determination to impose the CCP requirement on a particular PWS is appealable to the Board
    under Section 40 of the Act, except in cases where a system is required to conduct a CPE under
    Section 611.745(b)(4). See 415 ILCS 5/39 (1998); See also PC 1, PC 2.
    The Board does not include the amendments to 40 C.F.R. 14216(g)(2) in the final rule.
    These amendments address State procedures only. The procedures include how the State will
    approve a more representative data set and method to calculate virus inactivation, evaluate
    modifications to disinfection practice, and approve alternate filtration technology.
    Revisions to the Text of the Proposed Amendments in Final Adoption
    Section Revised
    Source(s) of
    Revision(s)
    Revision(s)
    611.101 “CT” or
    “CT
    calc
    JCAR, Board
    Added period before closed parentheses in cross
    reference
    611.101 “Compliance
    cycle”
    JCAR
    Added a comma after “2002”
    611.101 “Disinfectant
    contact time”
    JCAR
    Added “the point” before “where”
    611.101 “Disinfection
    Byproduct”
    Board
    Removed hyphen from Byproduct
    611.101 “Groundwater
    under the direct
    influence of surface
    water”
    USEPA
    Added definition
    611.101 “Inorganic
    contaminant”
    Board
    Capitalized “BOARD NOTE”
    611.101 “Maximum
    contaminant level”
    JCAR
    Added parentheses to cross reference

    20
    611.101 “Maximum
    Contaminant Level
    Goal”
    USEPA, Board
    Added definition; added note explaining that the Board
    does not routinely adopt MCLGs
    611.101 “Maximum
    residual disinfectant
    level”
    USEPA,
    Board, JCAR
    Added statement explaining the enforcement of
    MRDLs; added parentheses to cross reference;
    capitalized “BOARD NOTE”
    611.101 “Maximum
    residual disinfectant
    level goal”
    Board
    Added definition
    611.101 “nm”
    JCAR
    Struck “th”
    611.101 “Paired
    sample”
    JCAR
    Added parentheses to cross reference; moved definition
    to alphabetical order
    611.101 “Radioactive
    contaminants”
    Board
    Capitalized “BOARD NOTE”
    611.101 “Special
    irrigation district”
    JCAR
    Changed “an” to “and”
    611.101 “Total
    trihalomethanes”
    JCAR
    Added parentheses to cross reference
    611.101 “Transient,
    non-community water
    system”
    JCAR
    Added parentheses to cross references (twice)
    611.101 “Treatment”
    JCAR
    Added comma after “to”
    611.101 “Total
    Trihalomethanes”
    JCAR
    Added parentheses to cross references (twice)
    611.101
    “Trihalomethane”
    JCAR
    Added comma to series
    611.101 “ug”
    JCAR
    Struck “th”
    611.102 “Technical
    Bulletin 601”
    JCAR
    Struck comma after month
    611.102(a) “USEPA
    Organic Methods”
    JCAR
    Struck comma after month (three times)

    21
    611.102(b) “Access
    Analytical Systems,
    Inc.”
    JCAR, Board
    Struck comma; added parentheses to cross reference
    611.102(b) “Advanced
    Polymer Systems, Inc.”
    Board
    Updated
    Code of Federal Regulations
    reference to
    1998 edition
    611.102(b) “ASTM
    Method D1688”
    Board
    Corrected spelling to “absorption”
    611.102(b) “ERDA
    Health and Safety
    Laboratory”
    Board
    Updated
    Code of Federal Regulations
    reference to
    1998 edition
    611.102(b) “Method
    6251 B”
    JCAR
    Removed hyphen from “byproducts”
    611.102(b)
    “Supplement to the
    19th Edition “
    JCAR
    Added colon after “1996;” struck quotation marks
    611.102(b) “NSF”
    JCAR, Board
    Added comma; struck “(telephone” and closing
    parentheses
    611.102(b) “NTIS”
    JCAR, Board
    Added comma; removed parentheses from telephone
    number
    611.102(b) “USGS”
    Board
    Corrected closing quotation mark to opening mark
    611.111
    Board
    Omitted “See Section 611.Table H.;” changed “an
    SDWA” to “a SDWA”
    611.111(a)(1)
    JCAR
    Added comma to offset a parenthetical
    611.111(b)
    Board
    Renumbered subsection; added “Relief from an MCL”
    611.111(b)(1)
    Board, JCAR
    Added “from an MCL;” omitted “that”
    611.111(b)(1)(B)
    USEPA
    Changed “Subpart G” to “Subpart F”
    611.111(b)(2)
    Board
    Changed “Section” to “subsection;” struck “or
    treatment technique” (twice);
    611.111(b)(2)(A)
    Board
    Struck “or;” removed “treatment technique”

    22
    611.111(b)(2)(B)
    Board, USEPA
    Struck “or;” removed “treatment technique;” removed
    overstrike to restore “during the period ending on the
    date compliance with such requirement is required”
    611.111(b)(3)
    Board
    Added “for relief from an MCL;” struck “or treatment
    technique”
    611.111(b)(3)(B)
    JCAR
    Changed “a” to “an;” added comma
    611.111(c)
    Board
    Added subsection
    611.111(d)
    Board
    Renumbered subsection; added comma to a series
    611.111(e)
    Board
    Renumbered subsection
    611.111(e)(1)
    JCAR, Board
    Added a period to form a sentence; capitalized
    “However;” deleted “that”
    611.111(e)(2)
    JCAR
    Changed “Or, from” to “From;” a
    611.111(f)
    Board
    Changed “variance” to “relief” (three times); changed
    “1416” to “1415”
    611.111(g)
    JCAR
    Reverted to singular “Section”
    611.112
    Board
    Omitted “See Section 611.Table H.;” changed “an
    SDWA” to “a SDWA”
    611.112(a)
    JCAR, Board
    Added “a” before “site-specific;” added “requirement,
    or from both”
    611.112(a)(1)
    Board
    Added comma to a series
    611.112(b)(1)
    USEPA
    Added “or to implement measures to develop an
    alternative source of water supply”
    611.112(b)(4)
    Board
    Added “or, if compliance cannot be achieved, improve
    the quality of the drinking water;” added Board note
    611.112(d)
    USEPA, Board
    Added “Schedule of compliance;” replaced semicolon
    with a comma; changed “other requirement” to
    “treatment technique requirement;” removed comma;
    changed “but no schedule . . . requested” to “but not”
    611.112(d)(1)
    USEPA,
    JCAR, Board
    Changed “the Board may . . . variance if” to “No relief
    . . . unless;” removed colons (twice)

    23
    611.112(d)(1)(C)
    Board
    Removed ending conjunction “and;” changed ending
    punctuation to a period
    611.112(d)(2)
    Board
    Changed “four years” to “six years”
    611.112(d)(3)
    USEPA
    Added subsection “A PWS may not . . . Section
    611.111 or 611.131.”
    611.112(e)
    Board
    Added comma to a series
    611.112(f)
    Board
    Deleted article “a;” changed “variance” to “relief”
    (three times)
    611.112(g)(1)
    Board; JCAR
    Added period to form sentence; capitalized “However;”
    deleted “that;” changed “a variance” to “relief”
    611.112(h)
    JCAR
    Reverted to singular “Section”
    611.131(b)
    JCAR
    Added “a” before “PWS”
    611.131(c)
    Board
    Used lower case “variance”
    611.131(c)(2)
    JCAR
    Changed ending semicolon to a colon
    611.131(d)(3)
    JCAR
    Added “of” before “more”
    611.131(e)
    JCAR
    Changed “Federal” to “federal”
    611.131(f)
    JCAR
    Removed Comma after “Section”
    611.131(f)(1)(D)
    JCAR
    Changed to lower case “federal”
    611.131(f)(2)(C)
    USEPA, Board
    Added explanatory Board note
    611.131(f)(2)(D)(ii)
    JCAR
    Changed to lower case “federal”
    611.131(g)(1)
    JCAR, USEPA
    Changed to numeric “30;” changed “billed” to “served”
    611.131(g)(2)
    Board, USEPA
    Omitted reference to subsection (g)(1)(B)
    611.131(g)(2)(A)
    JCAR
    Changed brackets to parentheses
    611.131(g)(2)(B)
    JCAR
    Changed brackets to parentheses; standardized cross-
    reference to Appendix; changed period to a semicolon
    611.131(g)(2)(E)
    JCAR
    Changed ending period to a semicolon

    24
    611.131(g)(2)(G)
    JCAR
    Changed ending semicolon to period; omitted reference
    to subsection (g)(1)(B)
    611.131(g)(3)
    JCAR
    Changed to numeric “30”
    611.131(h)
    JCAR
    Changed to numeric “30”
    611.131(I)
    Board
    Changed “1416” to “1415”
    611.131(j)
    JCAR, Board
    Changed to singular “Section;” added comma to a
    series
    611.131 Board Note
    JCAR
    Deleted “Part”
    611.160(c)
    USEPA, Board
    Put requirement into active voice; added “to the
    Board;” moved “pursuant to . . . the Act and offset it in
    commas as a parenthetical; changed “a PWS” to “it;”
    added proviso “except when . . . Section
    611.745(b)(4)” offset by a comma
    611.212 Board note
    Board
    Updated
    Code of Federal Regulations
    reference to
    1998 edition
    611.220 Board note
    Board
    Updated
    Code of Federal Regulations
    reference to
    1998 edition
    611.232(b)
    JCAR
    Reorganized subsection numbering for clarity
    611.232(e)
    JCAR
    Changed to lower case “coliform”
    611.232(f)
    USEPA
    Changed date to “December 31, 2001” (twice)
    611.250
    JCAR
    Changed “of” to “after”
    611.250(d)
    USEPA
    Changed date to “ January 1, 2002”
    611.250(e)
    USEPA
    Changed date to “ January 1, 2002”
    611.310(c)(1)
    JCAR, USEPA
    Added comma after “persons;” changed date to
    “December 31, 2001”
    611.310(c)(2)
    USEPA
    Added comma after “persons;” changed date to
    “December 31, 2003”
    611.310(c)(3)
    USEPA
    Changed date to “December 31, 2003”

    25
    611.312(b)(1)
    USEPA
    Changed date to “January 1, 2002;” changed date to
    “December 31, 2004”
    611.312(b)(4)
    JCAR, USEPA
    Changed to numeric “24;” changed date to “December
    31, 2003”
    611.313(b)(1)
    USEPA
    Changed date to “January 1, 2002;” changed date to
    “December 31, 2004”
    611.313(b)(2)
    USEPA
    Changed date to “January 1, 2002;” changed date to
    “December 31, 2004”
    611.380(a)(1)
    USEPA
    Added “or which . . . disinfectant”
    611.380(a)(3)
    USEPA
    Added subsection
    611.380(b)(1)
    USEPA, JCAR
    Changed date to “January 1, 2002;” capitalized
    “Subpart;” changed date to “January 1, 2004”
    611.380(b)(2)
    USEPA
    Removed “and chlorite” (twice); changed date to
    “January 1, 2002;” changed date to “January 1, 2004”
    611.381(a)
    USEPA
    Removed parenthetical “or otherwise . . . this Subpart”
    611.381(b)(2)
    USEPA
    Added “except . . . this Section”
    611.380(b)(3)
    USEPA
    Added subsection
    611.381(d)(4)
    JCAR
    Added closing parentheses before “divided;” changed
    “(i)” to “(A);” changed “(ii)” to “(B)”
    611.382(a)(1)
    Board
    Added closing period
    611.382(b)(1)(A) table
    USEPA, JCAR
    Corrected cross reference to “Section
    611.382(b)(1)(D)” (twice); added closing period after
    “persons;” deleted “persons” after “temperature;”
    changed “10,000 or more” to “fewer than 10,000; in
    footnote added “with Agency approval”
    611.382(b)(1)(B) table
    USEPA, JCAR
    Added “serving; “ added closing period after “persons”
    611.382(b)(1)(C)
    USEPA
    Added sentence “For systems . . . this Section.”
    611.382(b)(1)(D)
    USEPA
    Added subsection
    611.382(b)(1)(E)
    USEPA
    Renumbered subsection

    26
    611.382(b)(2)(A)(ii)
    JCAR
    Added “(b)(2)(A)(ii)” reference`
    611.382(c)(1)(A)
    USEPA
    Added “community and nontransient noncommunity
    water;” added “that use chlorine or chloramines”
    611.382(d)(1)
    JCAR
    Changed “use” to “uses;” added “(d)(1)” after
    “subsections; changed “not later than” to “not past”
    611.382(f)
    JCAR, Board
    Used numeric “30;” deleted “All;” corrected cross-
    reference to “Section 611.384”
    611.383(a)(1)
    USEPA
    Changed “failure to monitor makes it impossible to
    determine compliance with the MCL” to “fails to
    monitor for”
    611.383(a)(3)
    Board
    Corrected reference to “Section 611.382”
    611.383(b)(1)(A)
    Board, USEPA
    Corrected reference to “Section 611.382(b)(1);” deleted
    sentences “If the running . . . Section 611.134. If a
    PWS . . . available data.”
    611.383(b)(1)(B)
    USEPA
    Changed “compliance must . . . Section 611.132(b)(1)”
    to “systems demonstrate . . . Section 611.312;” added
    “and is not . . . of that quarter;” added sentence
    “Systems required . . . three quarters of monitoring.”
    611.383(b)(1)(C)
    USEPA
    Replaced subsection relating to returning to routine
    monitoring with one relating to public notice
    611.383(b)(1)(D)
    USEPA
    Added subsection
    611.383(b)(2)
    Board
    Corrected reference to “Section 611.382(b)(3);”
    corrected reference to “Section 611.384”
    611.383(b)(3)
    Board
    Corrected reference to “Section 611.382(b)(2)(A)(ii);”
    corrected reference to “Section 611.382(b)(2)(B);”
    corrected reference to “Section 611.384”
    611.383(c)(1)(A)
    Board
    Corrected reference to “Section 611.382(c)(1);”
    corrected reference to “Section 611.384”
    611.383(c)(1)(B)
    Board
    Corrected reference to “Section 611.384”
    611.383(c)(2)(A)
    Board, JCAR,
    USEPA
    Corrected reference to “Section 611.382(c)(2);”
    changed “exceed” to “exceeds;” added “in addition to
    . . . Section 611.384” (twice)

    27
    611.383(c)(2)(B)
    Board, JCAR,
    USEPA
    Corrected reference to “Section 611.382(c)(2);” added
    “in addition to . . . Section 611.384” (twice)
    611.383(d)
    USEPA,
    JCAR, Board
    Corrected reference to “Section 611.385(c);” removed
    comma after “CaCO
    3
    ;” corrected reference to “Section
    611.385(b)(3);” added sentence “For systems . . .
    Section 611.384”
    611.384(b)
    Board, USEPA
    Corrected to plural “TTHMs;” corrected reference to
    “Section 611.382(b)” (five times); changed “quarter” to
    “monitoring period”
    611.384(c)
    Board
    Corrected reference to “Section 611.382(c)” (twice)
    611.384(d)
    Board
    Corrected reference to “Section 611.382(d)” (twice);
    corrected reference to “Section 611.385(b)(2);”
    corrected reference to “Section 611.385(c)(1);”
    corrected reference to “Section 611.385(b);” corrected
    reference to “Section 611.385(a)(2)(A);” corrected
    reference to “Section 611.385(a)(2)(B);” corrected
    reference to “Section 611.385(a)(2)(E);” corrected
    reference to “Section 611.385(a)(2)(F);” corrected
    reference to “Section 611.385(a)(2)(C)” (twice);
    corrected reference to “Section 611.385(a)(3)(A);”
    corrected reference to “Section 611.385(a)(3)(B);”
    corrected reference to “Section 611.385(a)(2)”
    611.385(a)(2)
    JCAR
    Change “Section” to “Part;” deleted “of” after “use”
    611.385(a)(2)(C)
    Board, USEPA
    Added commas to offset parenthetical “not later than
    . . . Section 611.380(b);” corrected date to “June 30,
    2005”
    611.385(b)(2)
    JCAR, Board
    Added “Step 1;” corrected reference to “611.381(d);”
    used lower case “source” added a space after “TOC;”
    changed less than sign to greater than sign
    611.385(b)(3)
    JCAR
    Changed “of” to “after”
    611.385(b)(4)
    JCAR
    Corrected reference to “subsection (b)(4)(B)”
    611.385(b)(4)(A)
    JCAR
    Corrected reference to “subsection (b)(4)(A)”
    611.385(b)(4)(B)
    JCAR
    Capitalized “Target”
    611.385(b)(4)(C)
    Board
    Corrected spelling of “equivalent”

    28
    611.385(b)(4)(D)
    JCAR
    Changed “Section” to “subsection”
    611.385(b)(4)(E)
    JCAR
    Renumbered subsection “(b)(5)” as “(b)(4)(E)”
    611.385(c)
    Board
    Used numeric “12”
    611.684
    Board
    Added amendments: added “or 611.312(a);” changed
    “supplier” to “PWS;” added comma to offset
    parenthetical “as provided . . .;” added comma after
    “standard” to offset the final element of a series
    611.685
    Board
    Added amendments: added comma to offset
    parenthetical “as directed . . .;” added “or 611.381(b);”
    changed to lower case “trihalomethanes”
    611.688
    USEPA
    Changed date to “December 31, 2001;” changed date to
    “December 31, 2003” (twice)
    611.740(a)
    USEPA
    Changed date to “January 1, 2002”
    611.740(a)(1)
    JCAR
    Changed comma to semicolon
    611.742(a)
    JCAR
    Changed to singular “subsection (a)(1)”
    611.742(a)(2)(C)
    Board
    Changed date to “March 31, 1999”
    611.742(a)(2)(C)(i)
    JCAR, USEPA
    Changed date to “March 31, 2000;” changed comma to
    semicolon
    611.742(a)(5)(A)
    USEPA
    Changed date to “March 31, 1999”
    611.742(a)(5)(B)
    Board
    Changed date to “April 30, 1999”
    611.742(a)(5)(C)
    USEPA
    Changed date to “March 31, 2000”
    611.742(a)(5)(D)
    JCAR, USEPA
    Changed to singular “subsection (a)(2)(C)(ii);” changed
    date to “December 31, 1999”
    611.742(a)(5)(E)
    USEPA
    Changed date to “December 31, 1999”
    611.742(b)
    USEPA
    Added comma and “with . . . 1 year”
    611.742(b)(2)
    JCAR, USEPA
    Changed CT99 to subscript;” standardized Appendix
    cross-reference; changed date to “April 1, 2000
    611.742(b)(3)(A)
    USEPA
    Changed date to “April 1, 2000

    29
    611.743
    USEPA
    Changed date to “December 31, 2001
    611.743(a)(1)
    JCAR
    Changed to plural “Sections”
    611.743(a)(2)
    JCAR
    Changed to plural “Sections”
    611.744(a)
    JCAR
    Changed to numerical “15”
    611.744(b)
    USEPA
    Changed “but shall conduct . . . failure of the
    equipment” to “until . . . back online. A system shall
    . . . after failure.”
    611.745
    USEPA, JCAR
    Changed date to “January 1, 2002” (twice); changed to
    plural “Sections”
    611.745(b)(1)
    JCAR
    Changed to numerical “15”
    611.745(b)(2)
    JCAR
    Changed to numerical “15;” changed “of” to “after”
    611.745(b)(3)
    JCAR
    Changed to numerical “15;” changed to numerical “14”
    611.745(b)(4)
    JCAR
    Changed to numerical “15;” changed to numerical “30;”
    changed to numerical “90”
    611.851(c)(3)
    JCAR
    Changed “its” to “is”
    611.882(c)(1)
    JCAR
    Changed ending punctuation to a semicolon followed
    by the conjunction “or” added subsection (c)(1)(A);
    renumbered subsection accordingly
    added subsection (c)(1)(A); renumbered subsection
    accordingly
    611.883(b)(2)
    USEPA
    Changed “supplier” to “PWS”
    611.883(c)(1)
    Board, USEPA
    Changed to plural “definitions;” Added subsection
    (c)(1)(A), designated existing text as subsection
    (c)(1)(B)
    611.883(c)(1)(B)
    USEPA
    Added “as close . . . using”
    611.883(d)(1)
    JCAR
    Added “(d)” after “subsection”
    611.883(d)(3)
    JCAR
    Added comma before “except”
    611.883(d)(4)(A)
    JCAR
    Standardized Appendix cross-reference

    30
    611.883(d)(4)(B)
    USEPA
    Added subsection
    611.883(d)(4)(C)
    Board
    Renumbered subsection
    611.883(d)(4)(C)
    Board
    Renumbered subsection
    611.883(d)(4) Board
    note
    JCAR, USEPA
    Changed “Board Note” to “BOARD NOTE;” changed
    cross reference to “subsection (d)(4)(D);” standardized
    Appendix cross-reference; used lower case “derived”
    611.883(d)(4)(F)(i)
    JCAR
    Changed to numerical “40”
    611.883(d)(4)(F)(ii)
    JCAR
    Changed to numerical “40”
    611.883(d)(4)(H)
    JCAR
    Standardized Appendix cross-reference
    611.883(d)(6)
    JCAR
    Standardized Appendix cross-reference
    611.883(e)(3)
    JCAR
    Added comma after “water”
    611.883(f)
    USEPA, JCAR
    Corrected cross-reference to “subsection (d)(6) of this
    Section”
    611.883(f)(3)
    JCAR
    Added “611.” to Section numbers (four times);
    standardized Appendix cross-reference
    611.883(f)(7)
    JCAR
    Deleted indefinite article “an” from before
    “administrative”
    611.883(h)(1)
    JCAR
    Added comma after “water;” changed “paragraph” to
    “subsection”
    611.883(h)(1)(B)(iv)
    JCAR
    Removed hyphen from byproduct
    611.884(b)
    JCAR
    Capitalized “L”
    611.884(c)
    JCAR
    Capitalized “L”
    611.884(d)
    USEPA
    Changed “but fewer that 10%” to “and up to and
    including 10%”
    611.884(e)
    JCAR
    Capitalized “L;” standardized Appendix cross-reference
    611.885(b)
    JCAR
    Added comma after “to;” used lower case “posting;”
    changed semicolon to comma after “Internet”

    31
    611.885(g)(2)
    JCAR
    Changed “less” to “fewer;” corrected the spelling of
    “forgo”
    611.Appendix A(14)
    Board
    Removed hyphen from “byproduct”
    611.Appendix A(78)
    JCAR
    Changed “Section” to “Appendix;” changed “Section”
    to “of this Appendix”
    611.Appendix F
    heading
    JCAR,
    Added “Maximum Contaminant Level;” added
    parentheses around “MCL”
    611.Appendix F key of
    abbreviations
    JCAR,
    Capitalized “L” (three times); capitalized “L” (twice);
    capitalized “Including;” added MCLGs
    611.Appendix F table
    JCAR,
    Added a column containing MCLGs
    611.Appendix F table
    row 1
    USEPA
    Added parenthetical “systems . . . month;” added are
    positive . . . monthly sample”
    611.Appendix F table
    row 5
    JCAR,
    Capitalized “L” (twice)
    611.Appendix F table
    row 6
    JCAR,
    Capitalized “L” (twice)
    611.Appendix F table
    heading after row 22
    JCAR,
    Capitalized “Including”
    611.Appendix G key
    of abbreviations
    JCAR,
    Capitalized “L” (three times)
    611.Appendix G
    Board
    Added column setting forth MCLGs
    611.Appendix G row 1
    USEPA
    Added parenthetical “systems . . . month;” added “are
    positive . . . sample”
    611.Appendix G row 5
    JCAR
    Capitalized “L”
    611.Appendix G row 6
    JCAR
    Capitalized “L”
    611.Appendix G row 7
    JCAR
    Capitalized “Fire;” capitalized “Ceramics;” capitalized
    “Electronics;” capitalized “Solder”

    32
    611.Appendix G row
    12
    JCAR, Board,
    USEPA
    Capitalized “Runoff;” capitalized “Including;”
    capitalized “L;” removed space before “
    adipate;” added
    hyphen; removed hyphen from “Byproduct;” changed
    “ylenes” to “Xylenes;” added MCLGs
    611.Appendix G
    heading after row 22
    JCAR, Board,
    USEPA
    Capitalized “Including”
    611.Appendix G row
    28
    JCAR, Board,
    USEPA
    Capitalized “L”
    611.Appendix G row
    32
    JCAR
    Removed space before “adipate”
    611.Appendix G row
    46
    JCAR
    Added hyphen to chemical name to break appropriately
    at the end of the line
    611.Appendix G row
    76
    JCAR
    Corrected spelling to “Xylenes”
    611.Appendix H(2)
    JCAR
    Changed “E. Coli” to “E. coli;” removed excess spaces
    Requested Revisions to the Text of the Proposed Amendments Not Made in Final
    Adoption
    Section Affected
    Source(s) of Request:
    Requested Revision(s)
    Explanation
    611.101 “Subpart B
    system”
    JCAR
    Definition was is alphabetical order in
    Notice of Proposed Amendments
    611.102(a) “USGS
    Methods”
    JCAR
    Method was is alphabetical order in
    Notice of Proposed Amendments
    611.385(c)(2)(A)
    JCAR
    Closed parentheses was present in
    Notice of Proposed Amendments
    Revisions to the Text of the Proposed Amendments in Proposal for Public Comment
    Illinois Section
    40 C.F.R. Section
    Revision(s)
    611.101
    Comprehensive
    performance
    141.2
    Added quotation marks to defined term; added
    “or;” changed “Subpart P” to “Subpart R;” added
    Board Note;

    33
    evaluation
    611.101 Disinfection
    profile
    141.2
    Added quotation marks to defined term; referenced
    new Section 611.742; added Board Note;
    611.101 Enhanced
    coagulation
    141.2
    Added quotation marks to defined term; added
    “(DBP);” added Board Note
    611.101 Enhanced
    softening
    141.2
    Added quotation marks to defined term; added
    “(DBP);” added Board Note
    611.101 Filter profile
    141.2
    Added quotation marks to defined term; added
    Board Note
    611.101 GAC10
    141.2
    Added quotation marks to defined term; added
    “(GAC);” added Board Note
    611.101
    Groundwater under
    the direct influence
    of surface water
    141.2
    Added “and 40 CFR 141.2 (1998)” to Board Note
    611.101 Haloacetic
    acids (five)
    141.2
    Added quotation marks to added term; placed
    HAA5 in quotations; added an “s” to “means;”
    added “(mg/L);” removed comma after
    “monobromoacetic acid;” added Board Note
    611.101 Maximun
    residual disinfectant
    level
    141.2
    Added quotation marks to added term; placed
    MRDL in quotations; added “the maximum
    permissible;” deleted “a;” added reference to
    611.313 and 611.383; deleted remaining federal
    text; added Board Note
    611.101 Uncovered
    finished water
    storage facility
    141.2
    Added quotation marks to defined term; added
    Board Note;
    611.101 Subpart B
    systems
    141.2
    Added quotation marks to defined term; changed
    “Subpart H” to “Subpart B;” added reference to
    Sections of the Ill. Adm. Code that are
    requirements on Subpart B systems; added Board
    Note
    611.101 SUVA
    141.2
    Added quotation marks to defined term; added
    “which is;” deleted “(DOC);” added Board Note
    611.101 Total
    Organic Carbon
    141.2
    Added quotation marks to defined term; placed
    TOC in quotations; removed comma after
    “chemical oxidants;” added Board Note
    611.111 (d)
    142.20 (a)
    Changed “a State” to “the Board;” deleted
    “pursuant to section 1415(a) of the Act;” changed
    “contaminant level” to “MCL;” changed “State” to
    “Board;” changed “must” to “will”
    611.112 (b)(4)
    1416 SDWA
    Added “Management or restructuring changes
    cannot reasonably be made that will result in
    compliance with the NPDWR.”

    34
    611.112 (d)
    1416 SDWA
    Added “and relief may not be requested later than
    three years after the otherwise applicable
    compliance date established in Section 1412(b)(10)
    of the SDWA”
    611.112 (d)
    142.20
    Deleted “with 500 or fewer service connections”
    and added “which serves 3,300 or fewer persons;”
    changed “but not to exceed a total of 6 additional
    years” to “not to exceed a total of four years”
    611.131 (a)
    142.301
    Rendered entire federal section as subsection;
    changed “Section 1415(e) of the Act authorizes
    the issuance of” to “Variances may be obtained
    from;” changed “maximum contaminant level” to
    “MCL;” changed “system” to “a PWS;” added “in
    this Section;” did not include the remainder of the
    federal text; added “The PWS shall file a variance
    petition . . .”
    611.131 (b)
    142.303
    Rendered entire federal section as subsection;
    changed “A State exercising . . .” to “The Board
    will;” changed “Public water system” to “a PWS;”
    changed “With the approval . . . may” to “The
    Board will;” changed “Public water system” to “a
    PWS;” added “with the approval of the USEPA;”
    changed “Public water system” to “ PWS;”
    changed “the State . . .” to “the Board will;”
    changed “Public water system would also” to “a
    PWS also applies”
    611.131 (c)
    142.304
    Rendered entire federal section as subsection,
    renumbering subsections accordingly; changed
    “subpart” to “Section;” abbreviated NPDWR;
    changed “subpart” to “Section;” deleted
    “otherwise available;” abbreviated MCL;
    abbreviated NPDWR; changed “Administrator” to
    “USEPA;” abbreviated PWS; abbreviated MCL
    (twice);
    611.131 (d)
    142.305
    Rendered entire federal section as subsection,
    renumbering subsections accordingly; changed
    “can be granted by a State” to “will be in effect;”
    changed “State” to “Board” (twice); abbreviated
    PWS; changed “Administrator” to “USEPA;”
    changed “State” to “Board” (twice); abbreviated
    PWS; changed “Administrator” to “USEPA;” did
    not include the remainder of the federal text
    611.131 (e)
    142.306
    Rendered entire federal section as subsection,
    renumbering subsections accordingly; abbreviated
    PWS; changed “must” to “shall;” changed “State”

    35
    to “Board;” did not include the remainder of the
    federal text of (a); changed “subpart” to “Section;”
    changed “the State or Administrator must find . . .”
    to “the PWS shall prove and document the
    following to the Board;” abbreviated PWS; did not
    include the parenthetical federal text (twice);
    abbreviated PWS; changed “State” to “Board;” did
    not include the parenthetical federal text;
    abbreviated NPDWR; abbreviated PWS; changed
    “Act” to “SDWA;” abbreviated PWS; changed
    “Act” to “SDWA;” changed “Act” to “SDWA;”
    abbreviated PWS; did not include “as developed
    through compliance with § 142.307;” abbreviated
    PWS
    611.131 (f)
    142.307
    Rendered entire federal section as subsection,
    renumbering subsections accordingly; changed “A
    State or . . .” to “The Board will set;” added
    “issued under this Section;” changed “must” to
    “will;” changed Administrator” to “USEPA;” did
    not include “pursuant to section 1412(b)(15) of the
    Act; did not include “as specified in 40 CFR part
    141;” changed “The State or Administrator must”
    to “The Board will;” abbreviated PWS; changed
    “must” to “will;” abbreviated PWS; changed “State
    or Administrator” to “Agency;” abbreviated PWS;
    changed “State or Administrator” to “Board;”
    changed “3” to “three;” changed “State or
    Administrator” to “Board;” changed “2” to “two;”
    changed “State or Administrator” to “Board;”
    abbreviated PWS; changed “Act” to “SDWA;”
    changed “Administrator or State” to “Board;”
    changed “must” to “will;” changed “5” to “five;”
    abbreviated PWS (twice); changed “Administrator
    or State” to “Board;” changed “must” to “will;”
    changed “Administrator or State” to “Board;”
    changed “must” to “will”
    611.131 (g)
    142.308
    Rendered entire federal section as subsection,
    renumbering subsections accordingly; added “The
    Board will provide notice and opportunity for a
    public hearing as provided in 35 Ill. Admin. Code
    104, except as modified or supplemented by this
    Section.;” did not include “At least fifteen (15)
    days before the date of proposal, and;” did not
    include “(30);” changed “prior to” to “before a;”
    changed “the State, Administrator, or public water

    36
    system as directed by the State or Administrator,
    must” to “the PWS shall;” did not include “served
    by the public water system;” did not include
    “identified in paragraph (a)(1) of this section;” did
    not include “identified in paragraph (a)(2) of this
    section;” changed “system” to “PWS;” did not
    include the federal text of subsection (b); changed
    “EPA” to “USEPA;” changed “primacy agency” to
    “Board;” did not include the federal text of
    subsections (d) and (e); changed “Administrator or
    State” to “Board;” changed “must” to “will”
    (twice)
    611.131 (g)(3)
    142.309
    Rendered entire federal section as
    subsection(g)(3); changed “Administrator or
    State” to “Board;” changed “must” to “will;” did
    not include “(1);” did not include the remaining
    federal text in (a) or the federal text in (b); added
    “The PWS must provide notice in the manner
    required under subsection (g)(1) of this Section at
    least thirty days prior to the public meeting.;” did
    not include the remainder of federal text in (c);
    added the Board Note
    611.131 (h)
    142.310
    Rendered entire federal section as subsection(h);
    changed “public water system” to “PWS;” changed
    Administrator” to “USEPA;” changed “30” to
    “thirty;” changed “State” to “Board;” changed
    “public water system” to “PWS”
    611.131 (i)
    142.312
    Rendered entire federal section as subsection(i);
    changed “State must submit . . .” to “Agency shall
    promptly send . . .;” did not include the remainder
    of the federal text; changed “If the Administrator
    disapproves . . .” to “The Board will . . .”
    611.160
    142.15 (g)(1)
    Added subsection (g)(1) as Section 611.160;
    changed “Enforceable requirements. States must
    have the authority to” to “The Agency may;”
    added “in writing;” did not include “and to assure
    that PWSs implement . . ..;” added “shall;”
    changed “is conducted to” to “must;” changed
    “system” to “PWS;” changed “must” to “shall;”
    added “A PWS shall implement any followup
    recommendations made in writing by the Agency
    that result as part of the CCP.”
    611.310 (c)
    141.12
    Abbreviated “MCL;” abbreviated “TTHM;” did
    not include parenthetical sum of TTHM; changed
    “subpart H’ to “Subpart B;” changed “which” to

    37
    “that;” changed “a population of 10,000 people or
    more” to “10,000 or more persons;” changed “This
    level” to “The MCL of 0.10 mg/L for TTHM;”
    changed “this section” to “the MCL for TTHM in
    this Section;” did not include the remainder of the
    federal text
    611.312
    141.64
    Added new section; added “(MCLs)” and
    “(DBPs)” to section heading; added “(DBPs);”
    changed “must” to “shall” (twice); changed
    “system” to “PWS;” changed “State” to “Board;”
    spelled out “twenty four;” changed “In granting
    the extension, States must” to “The Board shall
    grant the extension;” changed “must” to “shall;”
    changed “system” to “PWS;” changed “The
    Administrator, pursuant to Section 1412 of the
    Act, hereby identifies” to “The following are
    identified;” added “(DBPs)”
    611.313
    141.65
    Added new section; capitalized Section heading;
    added “(MRDLs);” changed “must” to “shall”
    (twice); changed “Subpart H” to “Subpart B”
    (twice); changed “must” to “shall” (twice);
    changed “Subpart H” to “Subpart B” (twice);
    deleted “The Administrator, pursuant to Section
    1412 of the Act, hereby identifies” and added “are
    identified”
    SUBPART I:
    Subpart L:
    Changed “Subpart L” to “SUBPART I”
    611.380 (a)
    141.130 (a)
    Abbreviated “NPDWRs;” changed “subpart L” to
    “Subpart I;” changed “criteria” to “standards;”
    changed “which” to “that;”
    hyphenated “non-
    transient, non-community;” abbreviated “DBP;”
    changed “criteria” to “standards;”
    changed
    “transient NCWSs” to “transient non-community
    water systems (transient non-CWSs);” did not
    include the remainder of the federal text
    611.380 (b)
    141.130 (b)
    Changed “Subpart H” to “
    Subpart B” (four times);
    changed “must” to “shall” (four times); changed
    “Transient NCWSs” to “Transient non-CWSs”
    611.380 (c)
    141.130 (c)
    Deleted “by the State and are included in a State
    register of qualified operators.” and replaced it
    with reference to “35 Ill. Admin. Code 680.”
    611.381 (a)
    141.131(a)
    Deleted “General;” changed “must” to “shall;”
    deleted “or otherwise approved by the EPA for
    monitoring under this subpart;” deleted “These
    methods are effective for compliance monitoring
    February 16, 1999.;” did not include the remainder

    38
    of the federal text; the incorporations by reference
    are found in Section 611.102
    611.381 (b)
    141.131(b)
    Added “(DPS)” (three times); changed “must” to
    “shall;” abbreviated “DBP;” changed “must” to
    “shall;” changed “EPA or the State” to “USEPA
    or the Agency” (twice);
    611.381(c)
    141.131(c)
    Changed “must” to “shall;” changed “State” to
    “Agency;” changed “EPA” to “USEPA;” changed
    “State” to “Agency”
    611.381(d)
    141.131(d)
    Deleted “Additional analytical methods.;” changed
    “must” to “shall;” changed “EPA” to “USEPA;”
    changed “State” to “Agency;” changed “must” to
    “shall;” “EPA” to “USEPA” (twice); deleted “or”
    and added comma to offset final element of a series
    (twice)
    611.382 (a)
    141.132 (a)
    Changed “must” to shall;” changed “State” to
    “Agency;” deleted federal text “in accordance with
    criteria developed under Sec. 142.16(f)(5) of this
    chapter.;” changed the structure of the federal
    sentence in (a)(4); changed “may” to “shall” ;
    added “under the Information Collection Rule (40
    CFR 141 Subpart M)”
    611.382 (b)
    141.132 (b)
    Added “(DBPs);” changed “must” to “shall;”
    changed “Subpart H” to “Subpart B” in chart
    (three times); changed “Subpart H” to “Subpart B”
    in chart (three times); changed “must” to “shall;”
    changed “State” to “Agency;” changed “must” to
    “shall;” changed “must” to “shall;” changed “must”
    to “shall;” changed “is required” to “shall;”
    changed “must” to “shall;” changed “must” to
    “shall” (three times)
    611.382 (c)
    141.132 (c)
    Changed “must” to “shall;” changed “Subpart H”
    to “Subpart B;” changed “must” to “shall” (twice);
    changed “is required” to “shall;” changed “must”
    to “shall” (twice);
    611.382 (d)
    141.132 (d)
    Changed “(DBPP)” to “(DBP);” changed “Subpart
    H” to “Subpart B;” changed “must” to “shall”
    (four times); changed “Subpart H” to “Subpart B;”
    changed “must” to “shall”
    611.382 (e)
    141.132 (e)
    Changed “must” to “shall”
    611.382 (f)
    141.132 (f)
    Changed “must” to “shall” (twice); changed
    “State” to “Agency” ; changed “30” to “thirty;”
    changed “Subpart H” to “Subpart B;” changed
    “must” to “shall;” changed “State” to “Agency”
    (twice)

    39
    611.383
    141.133
    Changed “must” to “shall;” changed “State” to
    “Agency;” changed “must” to “shall;” changed
    “will” to “shall;” changed “must” to “shall;”
    changed “State” to “Agency;” changed “12” to
    “twelve;” changed “must” to “shall;” changed
    “State” to “Agency;” changed “must” to “shall”
    (three times); changed “must” to “shall” (three
    times); changed “(DBP)” to “(DBP) precursors;”
    changed “12” to “twelve” (twice); added violation
    “of a NPDWR”
    611.384
    141.134
    Changed “must” to “shall;” changed “State” to
    “Agency;” changed “10” to “ten;” changed “must”
    to “shall;” changed “State” to “Agency;” changed
    “10” to “ten;” added “(
    DBPs);” changed “must”
    to “shall;” changed “3” to “three” in table under
    (b); added the body of footnote number 1 under
    the table; added Board Note; changed “must” to
    “shall;” changed “12” to “twelve” (twice);
    changed “State” to “Agency” in footnote; added
    Board Note; added “(DBP);” changed “must” to
    “shall;” changed “State” to “Agency” in footnote;
    added Board Note
    611.385 (a)
    141.135 (a)
    Changed “Subpart H” to “Subpart B;” changed
    “must” to “shall;” changed “Subpart H” to
    “Subpart B;” changed “must” to “shall” (twice);
    changed “State” to “Agency;” changed “must” to
    “shall;” abbreviated “NPDWR”
    611.385 (b)
    141.135 (b)
    Changed “must” to “shall;” changed “State” to
    “Agency;” changed “are required” to “shall;”
    changed “must” to “shall” in footnote; changed
    “Subpart H” to “Subpart B;” changed “State” to
    “Agency;” added “I
    f the PWS cannot achieve the
    Step 1 TOC removal requirement due to water
    quality parameters or operational constraints, the
    Agency shall approve the use of the Step 2 TOC
    removal requirement.”; changed “State” to
    “Agency” (three times); changed “must” to
    “shall;” changed “State” to “Agency;” changed
    “as” to “at;” placed
    Alternate enhanced
    coagulation level in quotations; changed “State”
    to “Agency” (twice); changed “must” to “shall;”
    changed “State” to “Agency;” added “If the TOC
    removal is consistently less than 0.3 mg/L of TOC
    per 10 mg/L of incremental alum dose (as
    aluminum) at all dosages of alum (or equivalent

    40
    addition of iron coagulant), the Agency shall grant
    the waiver of enhanced coagulation
    requirements.”
    611.385 (c)
    141.135 (c)
    Changed “Subpart H” to “Subpart B;” changed
    “must” to “shall” (twice); changed “12” to
    “twelve;” did not include parenthetical federal text
    in (c)(ii); changed “12” to “twelve” (twice);
    changed “Subpart H” to “Subpart B”
    611.385 (d)
    141.135 (d)
    Added “disinfection byproduct;” did not include
    “The Administrator identifies . . .” and added
    “are”
    611.684
    141.30 (d)
    Did not include the change to the federal text
    611.686
    141.30 (f)
    Did not include the change to the federal text
    611.688
    141.30 (h)
    Added new section “611.688 Applicable Dates;”
    replaced “paragraphs (a) through (g) of this
    section” with “Sections 611.680 through 611.686”
    (twice); replaced subpart H with “Subpart B” ;
    changed this Section is no longer applicable to
    “Sections 611.680 through 611.688 are no longer
    applicable.”
    611.740
    141.170
    Changed “subpart P” to “Subpart R;” changed
    “subpart H” to “Subpart B;” added “(
    MCLs)”
    (twice); changed “must” to “shall;” changed “are
    not permitted” to “shall not;” changed “beginning”
    to “after”
    611.741
    141.171
    Changed “must” to “shall” (twice); changed “State
    must” to “Agency shall;” deleted “and/;”
    611.742 (a)
    141.172 (a)
    Changed “must” to “shall;” changed “must” to
    “shall” (three times); changed “must” to “shall;”
    changed “those” to “that;” changed “must” to
    “shall;” changed “State” to “Agency” (twice);
    changed “must” to “shall;” changed “State” to
    “Agency;” changed “must” to “shall;” changed
    “those” to “that;” changed “State” to “Agency”
    (twice); changed “must” to “shall” (three times);
    changed “State” to “Agency;” changed “must” to
    “shall” (twice)
    611.742 (b)
    141.172 (b)
    Changed “must” to “shall;” added “
    The Agency
    shall determine the period of the disinfection
    profile.;” changed “must” to “shall;” changed “12”
    to “twelve;” changed “must” to “shall” (four
    times); changed “those” to that;” changed “State”
    to “Agency” (twice); changed “must” to “shall;”
    changed “are” to “is;” changed “These” to “The” ;
    added “If the Agency determines that the

    41
    operational data is substantially equivalent, the
    Agency shall approve the request.;” changed
    “State” to “Agency;” changed “those” to “that;”
    changed “State” to “Agency;” changed “must” to
    “shall;” changed “these” to “the;” changed “are” to
    “is;” changed “these” to “the;” added “If the
    Agency determines that the operational data is
    substantially equivalent, such systems may use
    these additional yearly disinfection profiles to
    develop a benchmark under the provisions of
    subsection (c) of this Section.;” changed “must” to
    “shall” (five times); changed “State” to “Agency;”
    changed “must” to “shall;” changed “State” to
    “Agency” (twice)
    611.742 (c)
    141.172 (c)
    Changed “must” to “shall;” changed “State” to
    “Agency” (twice); changed “must” to “shall;”
    changed “must” to “shall” (twice); changed “must”
    to “shall;” changed “State” to “Agency;” changed
    “must” to “shall;” changed “State” to “Agency”
    611.743
    141.173
    Changed “subpart H” to “Subpart B;” changed
    “must” to “shall;”
    611.743 (a)
    141.173 (a)
    Changed “State” to “Agency”
    611.743 (b)
    141.173 (b)
    Changed “State” to “Agency;” deleted “and/;”
    changed “State” to “Agency” (twice); changed
    “must” to “shall” (twice); changed “may not” to
    “shall not”
    611.744
    141.174
    Changed “must” to “shall” (three times); changed
    “15” to “fifteen;” changed “must” to “shall;” added
    “shall conduct grab sampling”
    611.745
    141.175
    Changed “must” to “shall;” changed “State” to
    “Agency;” changed “must” to “shall;” changed
    “State” to “Agency;”
    611.745 (a)
    141.175 (a)
    Changed “10” to “ten;” changed “includes” to “is;”
    deleted “by the State”
    611.745 (b)
    141.175 (b)
    Changed “must” to “shall” (twice); changed “10”
    to “ten;” changed “must” to “shall;” changed “10”
    to “ten;” changed “State” to “Agency;” changed
    “15” to “fifteen;” changed “must” to “shall”
    (twice); changed “7” to “seven;” changed “must”
    to “shall” (twice); changed “7” to “seven;”
    changed “15” to “fifteen;” changed “must” to
    “shall” (twice); changed “14” to “fourteen;”
    changed “15” to “fifteen;” changed “must” to
    “shall” (twice); changed “State” to “Agency”
    (twice); changed “30” to “thirty;” changed “State”

    42
    to “Agency;” changed “90” to “ninety”
    611.851
    141.32
    Added “MRDLs” to heading; did not include the
    remainder of the federal text;
    611.851 (a)
    141.32 (a)
    Added “or MRDLs of disinfectants;” did not
    include the remainder of the federal text; added
    new subsection (a)(1)(E) “Violation of the MRDL
    for chlorine dioxide as defined in Section 611.313
    and determined according to Section 611.383
    (c)(2).”
    611.853
    141.32 (c)
    Abbreviated and added “MRDL” to section; did
    not include the remainder of the federal text;
    611.881
    141.151
    Capitalized “Subpart” (twice); added abbreviation
    “(CWSs);” abbreviated “CWSs;” capitalized
    “Subpart;” placed “customers” in quotation marks
    and removed italics; abbreviated “CWS;”
    capitalized “Subpart;” placed “detected” in
    quotation marks and removed italics; changed the
    federal citations for contaminants to the applicable
    Illinois citations; did not include the remainder of
    the federal text of subsections (e) and (f)
    611.882
    141.152
    Changed Section heading “Effective dates” to
    “Compliance dates;” did not include the federal
    text of subsection (a); abbreviated “CWS” (twice);
    changed “must” to “shall” (twice); abbreviated
    “CWS” (twice); changed “must” to “shall;” did not
    include date of April 19, 1999 as such date has
    passed
    611.883
    141.153
    Abbreviated “CWS;” changed “must” to “shall;”
    abbreviated “CWS;” changed “primacy agency” to
    “Agency” (twice); changed “operator” to
    “supplier;” did not include definition of “MCLG;”
    changed “as close as possible to the MCLGs as
    feasible using” to “considering;” abbreviated
    “CWS;” changed “a variance or exemption” to
    “relief from a NPDWR;” changed definition of
    “Variance s and Exemptions” to “
    Variances,
    Adjusted Standards, and Site-specific Rules;”
    “deleted “or EPA;” changed “which” to “that;”
    changed “EPA” to “USEPA;” changed “sub-
    section” to “subsection;” changed “by-products” to
    “byproducts” ; abbreviated “CWS;” deleted “EPA
    and State;” changed “5” to “five” (twice); did not
    include the federal text of (d)(4)(ii); deleted
    “and/;” changed “should” to “must” (twice);
    changed “40” to “forty” (twice); changed

    43
    “operator’s” to “supplier’s;” changed “should” to
    “must;” changed “operator” to “supplier” (twice);
    changed “system” to “CWS;” abbreviated “CWS;”
    changed “should” to “must” (twice); changed
    “systems could” to “a CWS may;” changed
    “system” to “CWS” (twice); changed “must” to
    “shall;” changed “system” to “CWS” (four times);
    did not include the federal text “EPA strongly
    encourages . . .” and added the requirement “the
    report must include;” added “an” NPDWR;
    changed “system” to “CWS;” changed “subpart H”
    to “Subpart B;” capitalized “Part;” changed
    “systems” to “
    CWSs;” changed “subpart I” to
    “Subpart G;” did not capitalize “
    acrylamide and
    epichlorohydrin;” changed “variance, and
    exemption” to “variance, adjusted standard, site-
    specific rule;” changed “Variance and Exemption”
    to “Variances, adjusted standards, and site-specific
    rules” (three times); changed system” to “CWS;”
    changed “variance, and exemption” to “variance,
    adjusted standard, site-specific rule” (twice);
    changed “systems” to “
    CWSs;” did not italicize
    listed contaminants; changed “EPA” to “USEPA;”
    changed “FDA” to “United States Food and Drug
    Administration (USFDA);” changed
    “Environmental Protection Agency’s” to
    “USEPA;” abbreviated “CWS;” changed “Primacy
    Agency” to “Agency;” did not include federal text
    “(e.g., time and place of regularly scheduled board
    meetings);” changed “systems” to “the CWS;”
    changed “they deem” to “it deems”
    611.884
    141.154
    Added “the USEPA;” changed “system” to
    “CWS;” changed “must” to “shall;” added “the
    following language;” deleted “such as;” changed
    “EPA” to “USEPA;” changed “Primacy Agency”
    to “Agency;” changed “system” to “CWS;”
    changed “must” to “shall;” added “the following
    language;” deleted “such as;” changed “Primacy
    Agency” to “Agency;” changed “Systems” to “A
    CWS;” changed “must” to “shall;” added “the
    following language;” deleted “such as;” added
    “USEPA;” changed “Primacy Agency” to
    “Agency;” changed “Systems” to “A CWS;”
    changed “must” to “shall;” added “the following
    language;” deleted “such as;” added “USEPA;”

    44
    changed “Primacy Agency” to “Agency”
    611.884 (e)
    141.154 (e)
    Changed “must” to “shall;” added “the”
    611.885
    141.155
    Abbreviated “CWS;” changed “must” to “shall;”
    changed “system” to “CWS;” changed “must” to
    “shall;” did not include the remainder of the federal
    text of “good faith effort;” changed “system” to
    “CWS;” abbreviated “CWS;” changed “primacy
    agency” to “Agency;” changed “must” to “shall;”
    changed “primacy agency” to “Agency;” changed
    “3” to “three;” changed “primacy agency” to
    “Agency;” changed “system” to “CWS;”
    abbreviated “CWS;” changed “must” to “shall;”
    changed “primacy agency” to “Agency;”
    abbreviated “CWS;” changed “must” to “shall;”
    abbreviated “CWS;” changed “must” to “shall;”
    abbreviated “CWS (three times); deleted the
    federal text referencing tribes in subsection (g);
    changed “must” to “shall;” changed “5” to “five”
    611.Appendix A
    141.32 (e)(10)
    Changed “subpart P” to Subpart R”
    611.Appendix A
    141.32 (e)(76)
    Abbreviated “USEPA;” changed “EPA” to
    “USEPA” (twice)
    611.Appendix A
    141.32 (e)(77)
    Abbreviated “USEPA;” changed “EPA” to
    “USEPA” (twice)
    611.Appendix A
    141.32 (e)(78)
    Abbreviated “USEPA;” changed “EPA” to
    “USEPA” (twice); changed “paragraph (e) 78” to
    “Section” in Note; changed EPA to “USEPA”
    611.Appendix A
    141.32 (e)(79)
    Added “(DBPs);” abbreviated USEPA; changed
    EPA to “USEPA” (twice);
    611.Appendix A
    141.32 (e)(80)
    Abbreviated “USEPA;” changed “EPA” to
    “USEPA”
    611.Appendix A
    141.32 (e)(80)
    Abbreviated “USEPA;” changed “EPA” to
    “USEPA”
    611.Appendix F
    Appendix A to
    Subpart O
    Did not include federal information or column
    “MCLG in CCR units”
    611.Appendix G
    Appendix B to
    Subpart O
    Did not include federal information or column
    “MCLG”
    611.Appendix H
    Appendix C to
    Subpart O
    Board Amendments Not Federally Derived in the Text of the Proposed Amendments in Proposal
    for Public Comment
    Section
    Revision(s)
    611.101 Definitions
    Updated CFR edition cited to all definitions

    45
    611.101 “Best available technology”
    Changed U.S. EPA to “USEPA”
    611.101 “U.S. EPA” or “USEPA”
    Added “or “USEPA””
    Section 611.111 and 611.111 (a)
    Added “Relief Equivalent to SDWA” in section heading;
    added Section 1415”(a);” added “to describe how the
    Board grants State relief;” added “to that available from
    USEPA under;” added “See Section 611.Table H.
    SDWA Section 1415 variances do not require ultimate
    compliance within five years in every situation.
    Variances under Sections 35-37 of the Act do require
    compliance within five years in every case.
    Consequently, a PWS may have the option of seeking
    state regulatory relief equivalent to an SDWA Section
    1415 variance through one of three procedural
    mechanisms: a variance under Sections 35-37 of the Act
    and 35 Ill. Adm. Code 104; a site-specific rule under
    Sections 27-28 of the Act and 35 Ill. Adm. Code 102; or
    an adjusted standard under Section 28.1 of the Act and
    35 Ill. Adm. Code 106.;” changed “may” to “will;”
    changed “supplier” to “PWS;” added “ a site-specific rule
    or an adjusted standard;” changed “a NPDWR in this
    Part” to “an MCL or a treatment technique pursuant to
    this Section;” changed “supplier” to “PWS;” deleted
    “variance;” added “102, 104, or 106 as applicable;”
    deleted remainder of text in (a)(1); added “If a State
    requirement does not have a federal counterpart, the”
    and deleted “The;” changed “a variance” to “relief;”
    deleted “additional;” deleted “in this Part;”
    611.111 (b)
    Changed “ showing of arbitrary or unreasonable
    hardship” to “justification for relief under this Section;”
    changed “supplier” to “PWS;” changed “that” to “the
    following;” added “and alternative sources;” changed
    “supplier” to “PWS;” added “or that the treatment
    technique is not necessary to protect the health of
    persons served;” deleted “or other requirement;”
    changed “The system has applied BAT as identified in
    Subpart G of this Part.” to “The PWS will install or has
    installed the best available technology (BAT) (as
    identified in Subpart G of this Part), treatment technique,
    or other means which the Agency finds available.;”
    deleted “as defined in subsection (g) below”
    611.111 (c)
    Added “In any order granting relief under this Section,;”
    changed “supplier” to “PWS;” changed “other
    requirement” to “treatment technique;” changed
    “variance” to “relief;” changed “supplier” to “PWS;”
    changed “or other requirement, during the period ending

    46
    on the date compliance with such requirement is
    required” to “or treatment technique with respect to
    which the relief is granted”
    611.111 (d)
    Added “Schedule of compliance;” deleted “A schedule of
    compliance will require compliance with each MCL or
    other requirement with respect to which the variance was
    granted as expeditiously as practicable;” added the
    remainder of the text in (d) (1) and (2)
    611.111 (e)
    Changed “provide notice and opportunity” to “hold at
    least one;” added “In addition the Board will accept
    comments as appropriate pursuant to;” deleted “as
    provided in;” added “102” and “104”
    611.111 (f)
    Changed “a variance” to “relief;” changed “demonstrate”
    to “prove;” added “From the residual disinfectant
    concentration (RDC) requirements of Sections
    611.241(c) and 611.242(b).”
    611.111 (g)
    Added “The Agency shall promptly send USEPA the
    Opinion and Order of the Board granting a variance
    pursuant to this Section. The Board may reconsider and
    modify a grant of variance, or variance conditions, if
    USEPA notifies the Board of a finding pursuant to
    Section 1416 of the SDWA.;” deleted remainder of text
    in (g)
    611.111 (h)
    Added “In addition to the requirements of this Section,;”
    added “611.131 may;” changed “determinations made”
    to “relief granted;” added “and (B) in Board Note;
    changed “U.S. EPA” to “USEPA”
    Section 611.112 and 611.112 (a)
    Added “Relief Equivalent to SDWA;” changed
    “Variances” to “Exemptions” in section heading;
    changed “as a State” to “to describe how the Board
    grants State relief;” added “to that available from
    USEPA under;” deleted “of;” added “See 611.Table H.
    SDWA Section 1416 exemptions do not require ultimate
    compliance within five years in every situation.
    Variances under Sections 35-37 of the Act do require
    compliance within five years in every case.
    Consequently, a PWS may have the option of seeking
    state regulatory relief equivalent to an SDWA Section
    1416 exemption through one of three procedural
    mechanisms: a variance under Sections 35-37 of the Act
    and 35 Ill. Adm. Code 104; a site-specific rule under
    Sections 27-28 of the Act and 35 Ill. Adm. Code 102; or
    an adjusted standard under Section 28.1 of the Act and
    35 Ill. Adm. Code 106.;” changed “may” to “will;”
    changed “supplier” to “PWS;” added “, site-specific rule,

    47
    or an adjusted standard;” deleted “any requirement
    respecting;” added “pursuant to this Section;” deleted
    “requirement of an NPDWR in this Part;” changed
    “supplier” to “PWS;” deleted “variance;” added “102”
    and “or 106 as applicable;” deleted “except as modified
    or supplemented by this Section;” added “If a State
    requirement does not have a federal counterpart;”
    changed “a variance” to “relief;” deleted “additional;”
    deleted “in this Part”
    611.112 (b)
    Changed “showing of arbitrary or unreasonable
    hardship” to “justification for relief under this Section;”
    changed “supplier” to “PWS;” changed “that” to “the
    following;” changed “supplier” to “PWS” (three times);
    changed “variance” to “relief;”
    611.112 (c)
    Added “In any order granting relief under this Section;”
    changed “supplier” to “PWS;” changed “variance” to
    “relief;” changed “supplier” to “PWS;” deleted “during
    the period ending on the date when compliance is
    required;” added “with respect to which relief is granted”
    611.112 (d)
    Changed “variance” to “relief” (three times); changed
    “supplier” to “PWS;” changed “standard” to “NPDWR;”
    changed “supplier” to “PWS;” changed “standard” to
    “NPDWR;” changed “supplier” to “PWS” (three times);
    changed “a variance under subsections (d)(1)(A) or
    (d)(1)(B) above” to “relief;” changed “supplier” to
    “PWS”
    611.112 (e)
    Changed “provide notice and opportunity for a” to “hold
    at least one;” added “In addition the Board will accept
    comments as appropriate pursuant to;” deleted “as
    provided in;” added “102” and “, or 106”
    611.112 (f)
    Changed “U.S. EPA” to “USEPA” (twice)
    611.112 (g)
    Changed “a variance” to “relief;” changed “demonstrate”
    to “prove”
    611.112 (h)
    Added “In addition to the requirements of this Section;”
    added “or 611.131 may;” changed “determinations
    made” to “relief granted;” in Board Note changed
    “1994” to “1998” (twice) and “U.S. EPA” to “USEPA”
    611.160
    Added “For purposes of compliance with Subpart R of
    this Part, the comprehensive performance evaluation
    must consist of at least the following components:
    Assessment of plant performance; evaluation of major
    unit processes; identification and prioritization of
    performance limiting factors; assessment of the
    applicability of comprehensive technical assistance; and
    preparation of the CPE report.;” added “Agency

    48
    requirements that a PWS conduct a CCP or any followup
    recommendations made in writing by the Agency that
    result as part of the CCP are appealable by a PWS
    pursuant to Section 40 of the Act.”
    611.310
    Added “Maximum Contaminant Levels” to heading;
    placed “MCLs” in parenthesis; changed “U.S. EPA” to
    “USEPA” (three times)
    611.851
    Changed “supplier” to “PWS;” updated citation to
    corresponding federal provision;
    611.232 (f)
    Updated citation to corresponding federal provision
    The rule text is contained in a separate order adopted today.
    IT IS SO ORDERED.
    I, Dorothy M. Gunn, Clerk of the Illinois Pollution Control Board, do hereby certify that
    the above opinion was adopted on the 22nd day of July 1999 by a vote of 5-0.
    Dorothy M. Gunn, Clerk
    Illinois Pollution Control Board

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