ILLINOIS POLLUTION CONTROL BOARD
    September- 13, 1990
    IN THE MATTER OF:
    SAFE DRINKING WATER ACT
    )
    R90-21
    CORRECTIONS
    )
    (Rulemaking)
    PROPOSAL FOR PUBLIC COMMENT
    PROPOSED OPINION AND ORDER OF THE BOARD (by J. Anderson):
    On August 9, 1990, the Board enter-ed a final Opinion and Order- in R88—26,
    which involved adoption of regulations which are identical in substance to
    USEPA regulations implementing the Safe Drinking Water Act (SDWA). The Board
    will utilize this Docket to make needed corrections to the regulations adopted
    in R88-26. The Board will receive public comment on this Proposal until 45
    days after the date of publication in the Illinois Register.
    Section 17.5 of the Act provides for quick adoption of regulations which
    are “identical in substance” to federal regulations; Section 17.5 provides
    that Title VII of the Act and Section 5 of the Illinois Administrative
    Procedure Act (APA) shall not apply. Because this rulemaking is not subject
    to Section 5 of the APA, it is not subject to first notice or to second notice
    review by the Joint Committee on Administrative Rules (JCAR).
    The SDWA program was drawn from 40 CFR 141, 142 and 143 (1989).
    The Board is aware of two areas in the R88-26 Order which may require
    correction. First, on August 6, 1990, the Environmental Protection Agency
    (Agency) filed a supplemental post—adoption comment, which included the text
    of the materials it asked to be incorporated by reference in its July 20,
    1990, comment. (PC 14 in R88-26) The August 6 comment did not arrive in time
    to be reviewed in advance of the August 9 meeting. However, it will be
    necessary to revise the titles of the incorporations by reference to conform
    with the actual titles in the documents.
    Second, on September 2, 1990, the Board received a request from Access
    Analytical Systems, Inc. (Access) for inclusion of the “MHO-N1UG~ or “Colilert”
    methods for bacterial analysis. As was discussed on page 47 of the August 9,
    1990, Opinion in R88-26, these were omitted since 40 CFR 141.21(f) references
    only journal articles which do not actually set forth the methods. Access has
    provided supplemental materials which actually describe the methods.
    The Board will make the August 6, 1990, Agency comment in R88—26 PC 2 in
    this Docket, and the September 2, 1990, Access coment PC 1. Also, on
    September 12, 1990, the Board received a letter from the Agency requesting
    inclusion of the
    MMO-MUG
    test. (PC 3)
    PROCEDURAL HISTORY OF R88-26 and R9O-4
    115—57

    —2—
    The SDWA rules were recently adopted in Docket R88-26. The Board entered
    a Proposed Opinion and Order on October 5, 1989. The proposal appeared on
    December 1, 1989, at 13 Ill. Reg. 18690. Following the public comment period,
    the Board adopted a “Final” Opinion and Order on May 24, 1990. The Board then
    allowed a post—adoption coment period. On August 9, 1990, the Board withdrew
    the May 24 Opinion and Order, and substituted a new Opinion and Order. The
    final rules will appear in the Illinois Register in the near future.
    In R88—26 the Board adopted regulations to correspond with USEPA rules
    adopted through June 30, 1989. The Board reserved Docket R9O-4 to update the
    rules through December 31, 1989. However, on June 21, 1990, the Board
    dismissed R90—4, after determining that the USEPA amendments affected only
    language which was not to be adopted in R88-26.
    APA
    AND
    INCORPORATIONS BY REFERENCE
    The rulemaking concerns mainly mainly ‘incorporations by reference”. In
    Part 611 these are mainly references to analytical methods published by a
    variety of sources. The Illinois Administrative Procedure Act (APA), and
    derived regulations, restrict the use of such references in rules. (Ill. Rev.
    Stat. 1989, ch. 127, par. 1006.02) An Illinois agency may incorporate such
    standards or guidelines into a rule without publishing the standard or
    guideline in full if:
    1. The standard is from a federal agency or a nationally recognized
    organi zati on.
    2. The rule contains the address of the agency or organization for
    purposes of ordering the standard.
    3. The agency or organization makes copies readily available to the
    public.
    4. The rule includes the date of the standard.
    5.
    The rule states that it does not include later editions or
    amendments.
    6.
    The agency maintains a copy of the standard in its files for
    public
    inspection and copying.
    Incorporations by reference have been a major issue in several identical
    in substance rulemakings, including the underground storage tank program
    adopted in R88—27 (April 27, 1989; 13 Ill. Reg. 9519, effective June 12,
    1989.
    Section 7.2(a)(4) authorizes the Board to incorporate USEPA rules by
    reference where it is possible to do so without causing confusion. to the
    public. Section 7.2(a)(4) concerns “normal’ incorporations by reference, in
    which the Board references a USEPA rule rather than adopting the verbatim
    text. “Normal” incorporations are usually placed at the appropriate point in
    the verbatim text. Section 611.102 concerns “abnormal” ir,corporations by
    reference. These mainly consist of technical documents which are
    referenced
    11’~—58

    in the body of the verbatim text. ‘Abnormal’ incorporatior’s also include
    USEPA rules which are referenced in the verbatim text, but which are not a
    part of the program the Board is supposed to adopt. For example, in the
    drinking water rules, !JSEPA may cite to analytical standards for wastewater.
    The APA requirements on incorporation by reference are “enforced” by way
    of JCAR ‘eview of the documents during the first and second notice periods
    pursuant to Section 5 of the APA. Because Section 17.5 of the Act provides
    that Section 5 of the APA does rot apply to identical in substance rulemaking,
    the Board is not required to obtain JCAR prior approval of these documents.
    However, Section 17.5 does not include a specific exemption from the APA
    limitations on incorporation by refererce.
    There is a potential conflict between the
    requirements
    of the APA and the
    identical
    in substance mandate if
    a USEPA rule cites to a document which the
    APA prohibits.
    In such a situation
    the
    Board balances the requirements of the
    APA and the Act. The Board
    considers: whether the
    reference is really
    necessary to the identical in substance
    program; whether the APA violation
    amounts to a due process question;
    and,
    whether- there are alternative ways,
    such
    dS
    setting forth the substance of the standard in
    the rule.
    tt’iO-MUG TEST
    40 CER 141.21(f)(3)(iv) allows the
    use of the
    “MMO—IIUG test” (“minimal
    medium ortho-nitrophenyl—beta-d—galactopyranoside
    - 4-methyl—umbelliferyl-
    beta-d-glucuronide test”) or “Autoanalysis
    Colilert System” as a method for
    total coliform analysis. The corresponding Board rule is
    35 Ill. Adm. Code
    611.526. USEPA cites to a series of journal articles for these methods. The
    initial problem was that the APA authorizes incorporation by reference of
    “standards or guidelines”, but not journal articles. This
    was
    discussed
    in
    the R88—26 Proposed Opinion as follows:
    The fifth category is journal articles. These relate
    to two articles concerning P-A Coliform tests in the
    AWWA journal “Applied and Environmental
    Microbiology”. The
    APA
    definitely does not authorize
    incorporation
    by reference of journal articles.
    Hopefully the contents of these will be in the 17th
    Edition of Standard Methods. If not, the Agency and
    USEPA will need to obtain permission from the
    authors
    and publisher to reprint the articles in the rules.
    (R88-26 Proposed Opinion, October 5, 1989, p. 13)
    The Board received no
    response whatsoever to this issue in the Proposed
    Opinion.
    (See PC 5 in R88—26, items 25 through 27) The Board therefore
    undertook to find the journal articles and attempt to obtain permission from
    the publisher. This led to several discoveries: First, the the journal is in
    fact published by the American Society for Microbiology (ASM), rather than
    AWWA as implied in the USEPA rule. Second, al though the journal articles
    discuss the “MMO—MUG’ test, they do not tell a person how
    to perform
    the
    test. Therefore, in the May 24, 1990, Opinion and Or-dc—, the Board dropped
    this method from the
    ~~U1CS.
    The
    discussion
    was as follows:
    115—59

    -4-
    The fifth category is Journal articles. These
    relate to two articles concerning Coliform tests in
    the ASM
    journal “Applied and Environmental
    ~icrobiology”.These are referenced in 40 CF~
    141.21(f) (Section 611.526). The API\ does
    rot
    uothoni ze incorporation by reference of
    journal
    irticles. In the Proposed Opinion, the Board
    u~pressedhope that the contents of these
    will ~e in
    the
    17th Edition of Standard Methods.
    They do not
    ~ppearto be present. The Board indicated tnat if
    standard methods were not available, the Agercy or
    USEPA
    would need to obtain permission from the authors
    c~fld
    publisher to reprint the articles in the rules.
    one obtained permission.
    These journal articles are reporting the results
    field trials of
    new
    methods. The articles do not
    iude the details of the
    methods themselves, such
    ~t a person read the articles and carry out the
    ethod. As such, they are not “standards or
    ~uidelines” which can be incorporated pursuant to
    ~ection 6.02(a) of the APA.
    The USEPA rule indicates that these journal
    ~rtjclesare available from the AWWA. The Board
    called AWWA. They had never heard of them. The
    jou-nal is in fact published by the American Society
    for
    Microbiology, ASM Publications Department, 1913 1
    ~t.,N.W., Washington, D.C. 20006 (202) 833-9680.
    They make reprints available, but in minimum orders of
    100 copies.
    54 Fed. Peg. 29998, July 17, 1989, appears to be
    ~:he only USEPA action during the first update period
    or these rules. (July 1 through December 31,
    1989.) This adds to this reference additional journal
    ~rticles,which suffer the sane flaws. The Board
    requests clarification of th~agencies’ position
    (luring the final comment period. (P88—26 Opinion of
    May 24, 1990, p. 30)
    The Bou~d
    received no response whatsoever to this issue during the post—
    adoption coinent period. (See PC
    14 in P88—26, p. 18
    21, 47)
    Or’ August 9,
    1990, the 3o~cc therefore adopted the rules without
    reference
    to the TO-MUG
    test. (kUd-US Opinion of August 9, 1990, p. 47)
    As is discussed in the final paragraph of the above quotation, on July
    17, 1989, 1JSEPA added additional journal articles discussing the lIMO—MUG
    test. TIii.s was the only USEPA action during the July 1
    -
    December 31, 1989
    update pe-~~o.On June 21, 1990, the Board dismissed P90-4, after determining
    that the jou~nai articles would not appear in the Board rules in the first
    place. The
    hoard received no comment whatsoever on P90-4.
    115—60

    r
    Following
    the final adoption
    of P83—26, the Board
    was contacted by
    Access. The t~~10-NIUGtest is a pro~ietary method in which
    Access sells tubes
    containing the a culture medium and the “Colilert reagent”. Coliform bacteria
    metabolize the ortho—nitrophenyl-beta—d-galactopyranosiie, freeing o—nitro—
    phenol, which
    is detected through color- change.
    Access has provided the Board with a
    number
    of documents describing the
    test. As noted above, the journal articles cited by USEPA discuss the MMO—MUG
    test, but do not describe it. Rather, they start with the assumption that tne
    reader is already familiar with the test itself. Access has also provided an
    article describing the test, entitled “Rapid specific environmental coliform
    monitoring”, by S. Stratman, American Laboratory, July, 1983. Howeve, this
    is still a journal article. The better reference appears to be the
    instruction sheet
    which Access provides with the culture medium
    and reagent.
    Although the instruction sheet has the format of a “standard or
    guideline”,
    it comes from a private company. However, in view of USEPA’s
    incorporation by reference of this method, the Board will accept Access as a
    “nationally recognized organization.” for purposes of this identical in
    substance rulemaking.
    There are two types of colilert test: a presence absence (P/A) test and
    a most probable number (MPH) test. The latter actually exists in at least
    three variations. All appear to be encompassed within the USEPA references.
    A possible conflict exists between 40 CFR 141 and the colilert methods.
    While the former requires sample collection in accordance with the 16th
    Edition of Standard Methods, the latter requires the 17th Edition.
    As discussed above, USEPA added additional references to the MMO-MUG test
    in the July 17, 1989, Federal Registe—. However, these amendments appear to
    amend USEPA language which had been repealed on June 29, 1990. Since the
    repealed language does not appear in the Board rules, there is no place to
    insert these additional references. The Board has therefore proposed no
    changes in response to the July 17, 1989, USEPA amendments, but solicits
    comen t.
    OTHER INCORPORATION BY REFERENCE QUESTIONS
    In PC 14 in. P88-26, the Agency indicated that certain out-of-date
    analytical methods had to be referenced in Part 611. Or August 6, 1990, the
    Agency provided the Board with a collection of many of the methods it wanted
    referenced, hut this was not received in time to aid in preparing the Order in
    R88—26. The Board attempted to follow the Agency’s
    reconinended Methods, but
    many of the references were inaccurate or incomplete, since the Board did not
    yet have the documents in front of it at the time the Order was drafted.
    The Board has below corrected and completed the references to correspond
    with the documents received from the Agency. The follo~irg items referenced
    in P88—26 are still missing:
    AST~-1 (lethod 0992-71
    611.6O6(g)(1)(B)
    115—6 1

    —6-
    ASTII Method 01688—340
    611.606(rn)(.
    Standard Methods, 13th Edition:
    Methods 302, 303, 304, 305 and 306
    611.720(a)(2)
    Standard Methods, 14th Edition:
    Methods 4OaA
    and 3(4)
    611.6O6)a)~2):B)
    Methods 419C and B
    6i1.6O6(q~(2(3)
    Method 605
    611.606(g)(?)(C)
    Standard iethuds, 16th Edition:
    Metiod 43A and C
    611.6O6(j—.~
    A)
    Methods 408C, 0, E and F
    611.531(e)
    Method 412D
    611.6O6(~)~)
    Methods 413 B and E
    6ii.606(j)(2)
    Method 908D
    611.531(a) and (b)
    Method 909C
    611.531(a)
    The Board has left these in the proposal
    on the assumption that copies
    will be forthcoming from the Agency. However, the Board emphasizes that,
    unless it receives copies of these documents, the documents and analytical
    ~nethodswill be deleted from the rules.
    SECTION-BY—SECTION DISCUSSION
    Section 611.102
    This is the incorporations by reference Section. it include~ the
    comp~ete “library-type” reference to the documents
    which are
    used in
    subsequent Sections.
    As is discussed
    in general above, the Board
    has added a defirition of
    ‘MMO—TIUG
    test”, the term which will be used in che rules. The
    tert
    is
    avai 1 able from Access, whose address and phone number are
    r’Ov,’
    tile Ii
    ~st entry
    in subsection (b).
    Most
    of
    the
    ASTM
    and Standard Methods references have
    beer ore~Jedto
    colforci with the numbers and titles in toe documents submi ttec by the
    Agency. The Board
    has
    proposed to delete ASTI
    Methods D1367, D112G and
    D1293. These were used in the corrosivity monitoring in Proposed Sections
    611.621 et seq. in the R88—26 Proposal. Corrosivity monitoring was dropped,
    as was discussed on page 92 of the August 9, 1990 Opinion in R33—25. In that
    tnis appears to have been the only use made of these references, the Board has
    115—62

    7
    proposed to delete them.
    The Board has proposed to delete the reference to Standard Methods, 16th
    Edition, Method 912K. As was discussed on page 62 of the August 9, 1990,
    Opinion in R88-26, this reference was used in the draft Guidance Manual for
    the determination of “groundwater under the direct influence of surface
    water”, which is reflected in Section 611.212. However, in that the reference
    was dropped from the final version of the Guidance Manual, the Board dropped
    it from Section 611.212. In that this appears to be the only use of Method
    912K, the Board has proposed do delete it from the incorporation by reference
    Section.
    Section 611.526
    To this Section is added the reference to the t1MO—MUG
    test discussed
    above.
    Section 611.606
    In subsection (a), the reference to “ASTM 2972” has been modified to
    “ASTM 2972A or B”, to conform with the Agercy documentation.
    Section 611.610
    In subsection (d), Standard Methods, 14th Edition, “Method 3258” has been
    modified to “Method 320 and 32OA” to conform with the Agency documentation.
    Section 611.720
    In subsection (b)(1), “NTIS” has been specified as the source of
    “Procedures for Radiochemical Analysis...”, to conform with Section 611.102.
    ORDER
    The Board proposes to amend 35 Ill. Adm. Code
    611 to read as follows.
    The Board will receive written public comment for a period of 45 days after
    the date of publication in the Illinois Register.
    TITLE 35: ENVIRONMENTAL PROTECTION
    SUBTITLE F: PUBLIC WATER SUPPLIES
    CHAPTER I:
    POLLUTION CONTROL BOARD
    PART 611
    PRIMARY DRINKING WATER STANDARDS
    SUBPART A: GENERAL
    Section
    611.100
    Purpose, Scope and Applicability
    611.101
    Definitions
    611.102
    Incorporations by Reference
    611.103
    Severability
    611.108
    Delegation to Local Government
    611.109
    Enforcement
    115—63

    -8-
    611.110
    Special Exception Permits
    611.111
    Section 1415 Variances
    611.112
    Section 1416 Vdriances
    611.113
    Alternative Treatment Techniques
    611.114
    Siting requirements
    611.115
    Source Water Quality
    611.120
    Effective dates
    611.121
    Maximum Contaminant Level s
    611.125
    Fluoridation
    Requirement
    611.126
    P-ohibition on Use of Lead
    SUBPART B: FILTRATION AND
    DISINFECTIOIU
    Secti on
    611.201
    Requiring a Demonstation
    511.202
    Procedurea for Agency Determinations
    611.211
    Filtration Required
    611.2J2
    Groundwater under Direct Influence of Surface Water.
    611.213
    No Method of HPC Analysis
    611.220
    General Requirements
    611.230
    Filtration Effective Dates
    611.231
    Source Water Quality Conditions
    611.232
    Site—specific Conditions
    611.233
    Treatment Technique Violations
    611.240
    Disinfection
    611.241
    Unfiltered PWSs
    611.242
    Filtered PWSs
    611.250
    Filtration
    611.261
    Unfiltered PWSs: Reporting and Recordkeeping
    611.262
    Filtered PUSs:
    Reporting and Recordkeeping
    611.271
    Protection during Repair Work
    611.272
    Disinfection following Repair-
    SUBPART C:
    USE OF NON-CENTRALIZED TREATMENT DEVICES
    Secti
    on
    611.280
    Point-of-Entry Devices
    611.290
    Use of other Non—centralized Treatment Devices
    SUBPART F:
    MAXIMUM CONTAMINANT LEVELS (MCL ‘s)
    Section
    611.300
    irorganic Chemicals
    611.310
    Organic Chemicals
    611.311
    VOCs
    611.320
    Turbidity
    611.325
    Microbiological Contaminants
    611.330
    Radium and Gross Alpha Particle Activity
    611.331
    Beta Particle and Photon Radioactivity
    SUBPART K:
    GENERAL MONI TURING AND ANALYTI CAL REQUI REMENTS
    Section
    611.480
    Alternative Analytical Techniques
    611.490
    Certified Laboratories
    611.491
    Laboratory Testing Equipment
    611.500
    Consecutive PWSs
    115—64

    —9-
    SUBPART L:
    MICROBIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS
    Section
    611.521
    Routine Coliform
    Monitoring
    611.522
    Repeat Coliform Monitoring
    611.523
    Invalidation of Total Coliform Samples
    611.524
    Sanitary Surveys
    611.525
    Fecal Coliform and E. Coli Testing
    611.526
    Analytical Methodology
    611.527
    Response to Violation
    611.531
    Analytical Requirements
    611.532
    Unfiltered PUSs
    611.533
    Filtered PWSs
    SUBPART H: TURBIDITY MONITORING AND ANALYTICAL REQUIREMENTS
    Section
    611.560
    Turbidity
    SUBPART N: INORGANIC MONITORING
    AND ANALYTICAL REQUIREMENTS
    Section
    611.601
    Requirements
    611.602
    Violation of State MCL
    611.603
    Frequency of State Monitoring
    611.606
    Analytical Methods
    611.607
    Fluoride Monitoring
    611.610
    Special Monitoring for Sodium
    SUBPART 0: ORGANIC MONITORING AND ANALYTICAL REQUIREMENTS
    Section
    611.641
    Sampling and Analytical Requirements
    611.645 .
    Analytical Methods
    611.648
    Sampling for VOCs
    611.650
    Monitoring for 36 Contaminants
    611.657
    Analytical Methods for 36 Contaminants
    SUBPART P:
    THM MON I TURING AND ANALYTI CAL REQUIREMENTS
    Section
    611.680
    Sampling, Analytical and other Requirements
    611.683
    Reduced Monitoring Frequency
    611.684
    Averaging
    611.685
    Analytical Methods
    611.686
    Modification to System
    SUBPART Q: RADIOLOGICAL MONITORING AND
    ANALYTICAL REQUIREMENTS
    Section
    611.720
    Analytical Methods
    611.731
    Gross Alpha
    611.732
    Manmade Radioactivity
    SUBPART T: REPORTING, PUBLIC NOTiFICATION
    AND RECORDKEEPING
    Section
    611.830
    Applicability
    611.831
    Monthly Operating Report
    115—65 /

    -10-
    611.832
    Notice by Agency
    611.833
    Cross Connection Reporting
    611.840
    Reporting
    611.851
    Reporting
    MCL
    and other- Violations
    611.852
    Reporting other Violations
    611.853
    Notice to New Billing Units
    611.854
    General Content of Public Notice
    611.855
    Mandatory Health Effects Language
    611.856
    Fluo~ioeNotice
    611.853
    Fluoride Secondary Standard
    611.860
    Record Maintenance
    611.870
    List of 36 Contaminants
    Appendix A
    Mandatory Health Effects Information
    Appendix B
    Percent Inactivation. of G. Lamblia Cysts
    Appendic C Common Names of Organic Chemicals
    Table A
    Total.Coliform Monitoring Frequency
    Table B
    Fecal or Total Col iforn Density Measurements
    Table C
    Frequency of RDC Measurement
    AUTHORITY: Implementing Sections 17 and 17.5 and authorized by Section 27 of
    the Environmental Protection Act (Ill. Rev. Stat. 1989, ch. 111 1/2, par-s.
    1317, 1017.5 and 1027.
    SOURCE: Adopted in P88—26 at 14 Ill. Peg.
    ,
    effective
    amended in P90—21 at 14 Ill. Reg.
    ,
    effective
    SUBPART A: GENERAL
    Section 611.102 incorporations by Reference
    a) Abbreviations. The following abbreviated names are used for
    materials incorporated by
    reference:
    “AEPA—l Polymer”
    is available from Advanced Polymer- Systems.
    “ASTM” means Amer-i can Soci
    ety
    for Testing and Materials
    “Indigo method” is as described in “Standard Methods”, 17th
    Edition, Method 4500-03 B.
    “inductively Coupled Plasma Method” means “inductively Coupled
    Plasma-Atomic Emission Spectrometric Method for Trace Element
    Analysis in Water and Wastes —— Method 200.7, with appendix”
    See
    40
    CFR 136, Appendix C.
    ‘Inorganic Methods” means “Methods for Chemical Analysis of
    Water
    and Wastes”, available from NTIS
    ‘Microbiological Methods” means “Microbiological Methods for
    iloni to’~ing the Env i ronment, Water and Wastes”, avail able from
    N TI S.
    115—66

    —ii—
    “MMO-MUG Test”
    means ‘mi nimal medium ortho-nitrophenyl -beta-d—
    galactopyr-anoside — 4—methyl—unbelliferyl—beta—d—glucur-onide
    test”, available from Access Analytical Systems, Inc.
    “NCRP” means “National Council on Radiation Protection”.
    “NTIS” means “National Technical Information Service”.
    “Organic Methods” means “Methods for the Determination of
    Organic Compounds in Dr-inking Water-”, available from USEPA.
    “Pesticide Methods” means “Methods for- Or-ganochlorine Pesticides
    and Chloro-phenoxy Acid Herbicides in Dr-inking Water and
    Raw
    Source Water”, available from USEPA.
    “Radiochemical Methods” means “Interim Radiochemical Methodology
    for Dr-inking Water”, available from NTIS.
    “SPE Test Method” means “Solid Phase Extraction Test Method”,
    available from J.T. Baker Chemical Company.
    “Standard Methods”, means “Standard Methods for the Examination
    of Water and Wastewater”, available from the American Water-works
    Associ ati on.
    “Technicon Methods” means “Fluoride in Water and Wastewater”,
    available from Technicon.
    “USGS Method” means “United States Geological Survey Method”
    b) The Board incorporates the following publications by reference:
    Access Analytical Systems, Inc., 21 Business Park Drive,
    Branford, CT 06405 800/321-0207
    MIIO-MUG
    tests: Colilert P/A or Colilert MPN.
    ASTM. American Society for Testing and Materials, 1976 Race
    Street, Philadelphia, PA 19103
    ASTM Method 0858-88, “Standard Test Methods for Manganese
    in Water”, approved August 19, 1988.
    ASTM Method D992—71
    —ASIW t~4ethe~ 9~—8~~taRdaFd est ~4et~eds~ Aei~44y
    eF A~ka~~4~ye~WateF~ appFeve~A~ig~ist~ 1988~-
    AS~4~4et~e~
    91~2~~86T
    ~
    es~We~hedfeF~4aFdRess4E~
    WateF~ap~Feve~A~~st29~
    l-988r—
    ASTM Method D1179—72A or B “Standard Test Methods for
    Fluoride in Water”, approved July 28, 1972, reapproved
    115—67

    -12-
    C
    7(
    -ASTl~
    ~1et~e~P~29~-84 ta~~a~Test P4ethe~s
    ~eF ~k e~
    W~eF~ap~~e~e~Qete~eF2?~~9~4~-
    PSTU
    Method 01428—64, “Standard Test Methods for
    Sodium and
    PoLass~um in Water
    and Water—Formed Deposits by Flame
    Hoconetry”, approved August 31, 1964, r-eapproved :977.
    .HTM Method D1637—77D, “Standard Test Methods for Chromium
    in Uecer”~~~vedFebrua~y18, 1977.
    11Th Method D1683-84D or E, “Standard Test Methods for
    Co:pe~ in Water”.
    Method D1389-88a, “Standard Test Method for Turbidity
    ~ter”, approved June 24, 1988.
    I Method D2459-72, “Standard Test Method for Gamma
    ct~ometry in Water-,” 1975, reapproved 1981, discontinued
    0S’l Method D29O7—83, “Standard Test Methods for
    Mic~oquantities of Uranium in Water- by Fluorometry”,
    approved May
    27, 1983.
    RYM Method D2972—78A or B, “Standard Test Methods fo~
    ~$;erit in Water”~~y~Au~ust18,i978.
    l~3TMMethod D3086-79, “Standard Test Methods for
    Hgarochlorine Pesticides
    in Water”, approved Novembe’~ 30,
    1979.
    ASM Method
    D3223—79, “Standard Test Method for Total
    Mercury
    in Water-”, approved November 30, 1979.
    AS~V
    Method D3478—85, “Standard Test Method for Chlorinated
    Pheroxy
    Acid Herbicides in Water”, approved November 29,
    1935.
    ASTM Method D3557-78A or B, “Standard Test Methods for
    ;admium in Water-”~ roved July 28, 1978.
    S M Method D3559—78A or B, “Standard Test Methods for Lead
    in Water”, approved July 28, 1978.
    AS~M Method 03859-79, “Standard Test Methods for Selenium
    ir’ Water”, approved November 30, 1979.
    eSM Method D3867—79A or B, “Standard Test Methods for
    Ni~rite—Nitrate in Water”, approved November 30, 1979.
    American
    Waterworks Association et al., 6666
    West
    Quincy Ave.,
    115—68

    1-’
    Denver, CD 80235
    (303) 794-7711
    Standard Methods for the Examination of Water- and
    Wastewater, 13th Edition, 1971.
    Methods 302, 303, 304, 305 and 306
    Standard tletnods for- the Examination of Water and
    Wastewater,
    14th Edition, 1976.
    Method—s— 3014 II, —~F~
    ~VT
    V~a~
    V~I-—Determination
    of Cadmium, etc. by Direct Aspiration into an Air--
    Acetylene Flame.
    Method 3014 III, Determination of
    Low Concentrations
    of Cadmium, etc. by Chelation with Amonium
    Pyrr-olidine Dithiocar-bamate, and Extraction into
    Methyl Isobutyl Ketone
    Method 3014 IV, Determination of Aluminum, etc. by
    Direct Aspiration into a Nitrous Oxide Acetylene Flame
    Method 3O1A VI, Determination of Mercury by Cold Vapor-
    (Flameless) Atomic Absorption
    Method 3OIA VII, Determination of Arsenic and Selenium
    by Conversion to their Hydrides and Aspiration of the
    Gas into the Argon-Hydrogen. Flame
    Method -~2SB—32Oand 3204, Sodium, Flame Photometric
    Method
    Method 4044 and 3(4)
    Method 4130, Cyanide, Color-imetnic Method
    Method 419C and D
    Method 5094- a~dB-, Organochlorine Pesticides
    (TENTATI
    VE)
    Method
    509B, Chlorinated Phenoxy Acid Herbicides
    (TENTATIVE)
    Method 605
    Standard Methods for the Examination of Water and
    Wastewater, 16th Edition, 1985.
    Method 434 and C
    Method 212, Temperature
    115—69

    -14-
    Method 2144, T’urbidity,
    Nephelomet~ic Method--
    Nephelometric Turbidity Units
    Method—s— 3034— a~ B-, Determination of Artinaj,
    etc. by Direct ~
    Method 3038,
    Deter-mi nation of
    Low Concer:rcltars of
    Cadmium, ~
    Chel
    atiorwithThmo~umPyrroH~ine
    Dithiocarbaniate ~P~TT~nd ExtracflRy into
    M~tr;T
    ~b~itl~ei3K~
    -
    Method 304, Deter-mi nation of Micro Quanci tier H
    Al uniinuni, etc.
    by Electrothermal Atomic Absorpti ~L
    Spectrometry
    Method 408C, 0, E and F
    Method
    Method
    4108— a~G—, Chlorine Dioxide, Anperome
    Method 410C, Chlorine Dioxide, DPD Method (TENT. JE)
    Method 412D
    Method
    413 B and E
    Method 423, pH Value
    Method 9074, Pour Plate Method
    Method 938~T
    Fermentati~
    99g4~B~ 9 ~
    B—, MHtiple lit:
    efliue for Members Ot)1i~
    Group
    Method 908A, Standard Coliform Multiple—Tube
    (~iH)
    Tests
    Method 9088, Application of Tests to Routine
    Exami nations
    Method 908C, Fecal Col iform
    NPN Procedure
    Method 9080
    Method 908E,
    (TEN TATI VE)
    Presence-Absence (P-A) Col i for-H: Test
    Method 9O9—~ 99AT B a~ G—, Membrane Filter Tecdr’ique
    for Members of the Colifor-m
    Gro~
    Method 9094, Standard Total Col
    i form Membrone Fi leer
    Procedure
    11 5—70

    -15-
    Method
    9098, Delayed Incubation Total Coliform
    Procedure
    Method 909C,
    Fecal Coliform Membrane Filter- Procedure
    —~e~hed9~2K—
    Standard Methods for the Examination of Water and
    Wastewater,
    17th
    Edition, 1989.
    Advanced Polymer Systems,
    3696 Haven Avenue, Redwood City, CA
    94063 415,’ 366—2626:
    AEPA—1 Polymer-. See 40 CFR 141.22(a). Also,
    as
    referenced
    in
    ASTM
    01839.
    ERDA Health and Safety Laboratory, New
    York, NY
    HASL Procedure Manual, HASL 300, 1973. See 40 CFR
    141. 25(b) (2)
    J.T. Baker Chemical Company, 22 Red
    School Lane, Phillipsbur-g,
    NJ 08865:
    Solid Phase Extract (SPE) Test Method Number SPE-55O.
    See
    40 CFR 141.24(e), footnote 6.
    NCRP. National Council on Radiation Protection, 7910 Woodmont
    Ave., Bethesda, MD (301) 657—2652.
    “Maximum Permissible Body Burdens and Maximum Permissible
    Concentrations of Radionuclides in Air and in Water- for
    Occupational Exposure”, NCRP Report Number- 22, June 5,
    1959.
    NTIS. National Technical Information Service, 5235 Port Royal
    Road, Springfield, VA 22161 (703) 487-4600.
    “Methods of
    for Chemical Analysis of Water and Wastes”, J.
    Kopp and D. McGee, Third Edition, March, 1979. EPA-600/4-
    79—020, Doc. No. P884—128677
    “Microbiological Methods for Monitoring the Environment:
    Water and Wastes”, P. Bodner- and J. Winter, 1978. EPA-
    600/8-78-017, Dec. No. P329O—329/LP
    “Procedures for- Radiochenical Analysis of Nuclear Reactor
    Aqueous Sol utions”, H.L. Krieger and S. Gold, EPA-R4-73—
    014, May, 1973, Dec. No. P8222-154/704
    Technicon Industrial Systems, Tarrytown, NY 10591
    “Fluoride in Water- and Wastewater”, Industrial Method d129—
    115—7 1

    -
    i6_
    71W, December, 1972 See 40 CFR 141.23(f)(i0), footnotes 6
    and 7.
    “Fluoride in Water arc Wastewater”, ~380—75WE,February,
    1976. See 40
    CFR 141.23(f)(1O), footnotes 6 and 7.
    United States Environmental Protection Agency, (202) 382—4359
    “The Analysis of Trihalomethanes in Drinking Waters by the
    Purge ana Trap Mecnod”, Methoc 501.1. Sec 40 CFR 141,
    Subpart C,
    Appendix C.
    “The Analysis of Trihalomethanes in Drinking Water by
    Liquid/Liquid Extraction,” Method 501.2 See 40 CR 141,
    Subpart C, Appendix C.
    ‘~Inductively Coupled Plasma—Atomic Emission Spectrometric
    Method
    for Trace Element
    Analysis in Water and Wastes ——
    rIetnod 200.7,
    with Appendix to Method 200.7” entitled,
    “Inductively Coupled Plasma-Atomic Emission Analysis of
    Dr-inking Water’,
    Ma~cn 1987. See 40 CFR 136, Appendix C.
    “Interim Radiochemical Methodology for Drinking Water”,
    EPA—600/4-75-008
    (Revised) Ma~ch,1976.
    “Methods for
    the Determination of Organic Compounds in
    Dr-inking Water-’, EPA/600/4—88/039, December, 1988.
    “Methods for Organochlorine Pesticides and Chloro—phenoxy
    Acid Herbicides in D’ inking Water- and Rai Sour-ce Water”
    “Methods of for Chemical Analysis of Water and Wastes”.
    See NTIS
    Microbiological Methods for Monitoring the Environment,
    Water and Wastes”. See
    NTIS
    “Procedures for Radiochemical Analysis of Nuclear Reactor
    Aqueous Solutions”.
    See NTIS
    United States
    Environmental Protection Agency,
    Science and
    Technology Branch, Criteria and Standards Division, Office of
    Drinking Water, Washington D.C. 20460
    “Guidance Manual for Compliance with the Filtration
    and
    Disinfection Requi rerrents for Public Water Systems using
    Surface Water Sources”, October, 1939
    USGS. United States Geological Survey.
    Techniques of Water—Resources Investigation of the United
    States Geological Survey:
    1 1 ~~7’)
    lU
    i~-

    -I I
    -
    Book 5, Chapter A—i, “Methods for Determination of
    inorganic substances in Water and Fluvial Sediments”,
    1979
    Book 5, Chapter
    4—3, “Methods for Analysis of Organic
    Substances in Water-,” 1971
    c) The Board incorporates the following federal regulations by
    reference:
    40 CFR 136, Appendix B and C (1989)
    40 CFR 141.22(a) (1989)
    40 CFR 141.23(f)(10), footnotes 6 and 7 (1989)
    40 CFR 141.24(e), footnote 6 (1989)
    40 CFR 141.25(b)(2) (1989)
    40 CFR 141, Subpart C, Appendix C (1989).
    d) This Part incorporates no future amendments or editions.
    (Source: Amended at 14 Ill. Peg.
    ,
    effective
    SUBPART L:
    MICROBIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS
    Section 611.526 Analytical Methodology
    a)
    The
    standard sample volume required for total colifor-m analysis,
    regardless of analytical method used, is 100 ml.
    b) Suppliers need only determine the presence or absence of total
    coliforms, a determination of total colifor-m density is not required.
    c) Suppliers shall conduct total coliform analyses in accordance with
    one of the following analytical methods, incorporated by reference in
    Section 611.102:
    1)
    Multiple—Tube Fermentation (MTF) Technique, as set forth in:
    A)
    Standard Methods, 16th Edition, Method 908, 9084 and 9088,
    except that 10 fermentation tubes must be used; or
    B) Microbiological Methods, Part III, Section. B 4.1—4.6.4, pp.
    114-118, (Most Probable Number Method), except that 10
    fermentation tubes must be used; or
    2)
    Membrane Filter (HF) Technique, as set forth in:
    A) Standard Methods, 16th Ed i ti on, Method 909, 909A and 9093;
    or
    115—73

    —13-
    B)
    Microbiological Methods, Part III, Section 8.2.1—2.6, pp.
    108-112; or
    3) P-A Coliform Test, as set forth in: Standard Methods, 16th
    Edition, Method 9O8E—~—; or
    !L
    MMO-MUG test.
    d) In IICU of the 10—tube MTF Technique specified in subsection (c)(1),
    a supplier- may use the MIF Technique using
    either five tubes (20—mnl
    sample portions or
    a single culture bottle containing the culture
    medium for the NITF
    Technique, i.e., lauryl tryptose broth (formulated
    as described in Standard Methods, 16th Edition, Method 9084,
    ir-corporoted by reference in Sectior 611.102) as long as a 100—ml
    water sample is used in the analysis.
    e) Suppliers shall conduct fecal colifor-m analysis in accordance with
    the following procedure:
    1)
    When the MTF Technique
    or P—A Coliform
    Test is used to test for
    total coliforms, shake the lactose—positive presumptive tube or
    P—A bottle vigorously and transfer the growth with a sterile 3—
    mm loop or sterile applicator stick into brilliant green lactose
    bile broth and EC medium, defined below, to determine the
    presence of total and fecal coliforms, respectively.
    2)
    For
    Microbiological Methods, referenced above, which use a
    nembrance filter, remove the mnembrone containing the total
    col i for-Hi cci onies from
    the
    substrate with a sterile forceps arc
    carefully curl and insert
    the membrane into a tube of EC
    medium. (The laboratory may first remove a small portion of
    selected colonies for verification). Gently shake the
    inoculated EC
    tubes to insure adequate mixing and incubate in a
    waterbath at 44.5
    +/—
    0.2 degrees C for 24
    +/-
    2 hours. Gas
    production of any amount in the inner- fermentation tiuhe of the
    BC medium indicates a positive fecal coliform test.
    3)
    The preparation of EC medium is described in Standard Methods,
    16th Edition, Method 908C.
    4)
    Supplier-s need only determine the presence or absence of fecal
    coliforms, a detemnination of fecal coliform density is not
    roqui red.
    BOARD NOTE: Derived from 40 CFR 141.21(f) (1989), as amended at
    54 Fed. Reg. 27562,
    June 29, 1989.
    (Source: Amended
    at
    14 111. Peg.
    ,
    effective
    SUBPART N: I ~l0RGANICMONITORING AND
    ANALYTICAL REQUIREMENTS
    Section
    611.606 Analytical Methods
    115—74

    —19—
    Analyses conducted to determine compliance with Section 611.300 must be made
    in accordance with the following methods, incorporated by reference in Section
    611.102. For approved analytical procedures for metals, the technique
    applicable to total metals must be used.
    a) Arsenic:
    1)
    _______
    2)
    ASTM Method D2972A or B or
    Standard Methods, 14th Edition:
    A)
    Method 301A VII ; or
    B) Method 4044 and 4043(4); or
    3)
    USGS
    Methods, Method 1-1062-78, pp. 61-63, Atomic Absorption
    Gaseous Hydride; or
    4) Inorganic Methods:
    A) Method 206.2, Atomic Absorption Furnace Technique; or
    B) Method 206.3; or
    C)
    Method 206.4; or
    Inductively Coupled Plasma Method 200.7.
    Standard Methods, 14th Edition, Method 301A IV; or
    Inorganic Methods:
    A) Method 208.1; or
    B) Method 208.2, Atomic Absorption Furnace Technique; or
    3) Inductively Coupled Plasma Method 200.7.
    c) Cadmium:
    1) ASTM Method 03557 A or B; or
    2) Standard Methods, 14th Edition, Methods 301A II or III; or
    3) Inorganic Methods:
    A) Method 213.1; or
    B) Method 213.2, Atomic Absorption Furnace Technique; or
    5)
    b) Barium:
    1)
    2)
    115—75

    -20-
    4)
    1 n’luc ti
    vOiy Poupi
    ~l asriio
    Method 200. 7.
    i; Coroni urn:
    :1
    45Th
    ~1~ehoo7 II 7: or
    2) SconJa~i M~nocs. IILb Edition, Methods Lj10, :1 or-
    III; or
    3) 1 no~ju~iclorjs:
    A) t1o~ooJ 2~.1
    3)
    iC2roJ 213.?,
    H
    Induc~ tip’ C~uplo
    e) Lead:
    1)
    ASIM M~:hoj1) 355
    2)
    Standa~dMe:ouds,
    3)
    1 no~ganic ~1ech’oJs:
    ,~)
    i1~iu~P79. I
    3)
    1
    1
    H’
    c
    AbsoThtior Furr ice Teror iue
    4) I
    nductivoly Cu~p ~1asim rlethoc
    200.7.
    f;
    Mercury:
    1
    2)
    ASIA ~kthoJ1 PHi :
    Stardci~J Merhoas, H)
    Edition, Method 3014 VI, Cold Vapor
    Te~Fill .l1’~ ~
    3)
    1
    nor-gani
    2
    Metilo)
    1:
    A)
    M~tiio: edh. 1:
    3)
    ieLhc’d 2-15.1, no
    onated Cold Vapor Techni que.
    9) litrate:
    A) Me2noo P 370 7 or
    B; or
    II) i1e~uoJ P en
    or
    2) Standad
    Methods,
    L~ifl
    Edition:
    o Aosorpt ion Fu~raceTechni
    que; or
    asna Method 200.7.
    U-,
    -3
    D,
    0
    en
    Edition, Methods LilA II or- Ill;
    or
    1)
    ASIA
    11 5-76

    -
    A) Method 419C, Spectrometric, Cadmium Reduction;
    B) Method 419D, Colorimetric Brucine; or
    C) Method 605, Automated Cadmium Reduction.
    3) Inorganic Methods:
    A) Method 352.1; or
    B) Method 353.1, Automated Hydrazine Reduction; or
    C) Method 353.2; or
    D) Method 353.3; or
    h) Selenium:
    1) Inorganic Methods
    A) Method 270.2, Atomic Absorption Furnace Technique; or
    B) Method 270.3; or
    3) USGS Methods, Method 1-1667—78, pp. 237—239; or
    4) ASTM Method D 3859; or
    5) Standard methods, 14th Edition, Method 3011 VII, Hydride
    Generation
    Atomic Absorption Spectrophotometry.
    i) Silver:
    1) Standard Methods, 14th Edition, Methods 3011 II; or
    2) Inorganic Methods:
    A) Method 272.1; or
    B)
    Method 272.2, Atomic Absorption Furnace Technique; or
    3) Inductively Coupled Plasma Method 200.7.
    j)
    Fluoride:
    1) ASTM 0 1179 A or 8; or
    2) Standard Methods, 16th Edition:
    A) Methods 43A and 43C;
    B) 4138; or
    115—7 7

    -
    -22-
    C)
    413E; cr-
    3) rorgCnic Metnods:
    j\ )
    Method 340.1;
    3)
    Method 340.2;
    7
    Methoc
    340.3;
    or
    4)
    Techni con Methods, Methods 129-Pin
    or 330-PSI/S
    3:j53)
    NOTE: Derived from 40 Cr7 141 .23(f) (1989).
    ~,\
    ~
    I)
    ASTri ~
    35:3;
    -
    2)
    Standaru Methods, 16th Edition,
    ‘lechod
    3334.
    3)
    7 noThanic
    Met-nods:
    Methods
    243.1 or 243.2;
    or
    4)
    indutively Coupled Plasma Method 200.7.
    B0A-:D 1015:
    These methods are
    isci for
    aaj~ti opel State
    raqul rLnents
    1)
    1
    roi~:
    1)
    Ino’gaaic MeLbods: 236.1 or
    233.2;
    or
    I r4~j~j~-~y
    Coupled P1-es
    a
    Metnol 200.7.
    3)
    Standard Methods, 6tc di ti or, Metnod 3037
    70420 NUIE: These methods are used for —additional Stata
    requi remnents.
    H)
    Copper:
    1)
    ASI~11) 1588 1) or 5;
    2)
    Standa~JMethods, lGtn Edition:
    .5)
    Meohods 3034
    or 3;
    13;
    Method 304;
    or
    3Qi,R9 ILTE : These
    methods era
    oslO f-or .-‘~ditiara State
    ~equ -i re;nents.
    3)
    norgaric
    Methods: 220.1 or 220.2;
    or
    115—78

    —23-
    4) Inductively Coupled Plasma Method 200.7.
    n) Zinc:
    1) Inorganic Methods 289.1 or 289.2; or
    2)
    Standard Methods, 16th Edition, Method 303A
    BOARD NOTE: These methods are used for additional State
    requi rements.
    o) Cyanide:
    1) Inorganic Method 335.2; or
    2) Standard Methods, 16th Edition, Method 4120
    BOARD NOTE: These methods are used for additional State
    -
    requirements.
    (Source: Amended at 14 Ill.
    Peg.
    ,
    effective
    Section 611.610 Special Monitoring for Sodium
    a) CWS suppliers shall collect and analyze one sample per plant at the
    entry point of the distribution system for the determination of
    sodium concentration levels; samples must be collected and analyzed
    annually for CWSs utilizing surface water sources in whole or in
    part, and at least every three years for CWSs utilizing solely
    groundwater sources. The minimum number of samples required to be
    taken by the supplier is based on the number of treatment plants used
    by the supplier, except that multiple wells drawing raw water from a
    single aquifer may, with the Agency approval, be considered one
    treatment plant for determining the minimum number of samples. The
    Agency shall require the supplier to collect and analyze water
    samples for sodium more frequently in locations where the sodium
    content is variable.
    b) The CWS supplier shall report to the Agency the results of the
    analyses for sodium within the first 10 days of the month following
    the month in which the sample results were received or within the
    first 10 days following the end of the required monitoring period as
    specified by special exception permit,-whichever of these is first.
    If more than annual sarnpling is required the supplier shall report
    the average sodium concentration within 10 days of the month
    following the month in which the analytical results of the last
    sample used for the annual average was received.
    c) The CWS supplier shall notify the Agency and appropriate local public
    health officials of the sodium levels by written notice by direct
    mail within three months. A copy of each notice required to be
    provided by this subsection must be sent to the Agency within 10 days
    of its issuance.
    115—79

    -24-
    di
    Analyses for sodi urn nose
    be performed by the foIl
    o-oi r~methods,
    incorporated by reference in Section :PH.102:
    1)
    Standard Metnods, l4tn Edition, Metnod — ~—320 and 3?OA, flame
    photomoetrdc method;
    2)
    inorganic Methods:
    A)
    Method 273.1, Atomic Abs-optioc —
    77r~eCO
    4spi~at~or; or
    B) Method
    273.2,
    Atomnic Absorpti n~
    -
    G
    :roi to
    Furnace;
    or-
    3)
    ASIM Method D1423.
    BOAR) NOTE:
    Derived from 40 mF.7 141.41 1939’;.
    (Source:
    Amended
    at
    14 111. Peg.
    ,
    effective-
    SUSPART Q:
    RADI OLOjI CML MON 1 IOPHr 4-ID AL -~YI~
    l
    dii
    Section 611.720 Analytical i1ethods
    a)
    The methods specified be
    ow,
    incorporate-P by rHe~ence in Se-:;ti on
    611. 102,
    dr-C -to
    be used to determine
    cor~p
    I acue 100 Sections 611. 330
    and 611.331, except in
    cases where clte’rati ye
    .retbods nu ie beer
    approved in accordance with Section 611. 439.
    1)
    Radiochemical Methods;
    2)
    Standard Methods, 13th Edition:
    A)
    Gross A pha and Beta:
    Met.nod 3 H;
    B)
    Total Radium: iletnod 304;
    C)
    Radiurn-226:
    Method :305;
    D)
    Stronti
    um—89, 90: Method 303;
    E)
    Tnitiun:
    Method 306.
    3)
    1SSTM Methods:
    A) Cesiun-134: ASIA D-2459;
    B)
    Uranium:
    4.3101 D—2907.
    b;
    When
    the i ~entifi cation and
    macso
    remnant
    ~f ~ao jnu~l ides ot ~- than
    Hose listed in subsection
    (d)
    is ~equirec,tn-a
    following maccoos,
    incorporated by refer-er’ce in Section 611.102, era to he used, except
    in cases where alternative methods
    have
    been ape roved in accordance
    witn
    Section 611.480:
    1l5—Sfl

    -25-
    1)
    “Procedures for- Radiochemnical Analysis of Nuclear Reactor
    Aqueous Solutions’, available from —~S~PA-NT1S.
    2) HASL Procedure Manual, HASL 300.
    c) For- the purpose of monitoring radioactivity concentrations in
    drinking water,
    the
    required sensitivity of
    the radioanaysis is
    defined in terms of a detection limit. The detection limit must be
    that concentration which can be counted with
    a precision of plus or
    minus 100 per-cent at the
    95 per-cent confidence lev~i (1.96 sigma
    where sigma is
    the
    standard deviation of
    the
    net counting
    rate
    of the
    sample)
    1) - To determine compliance with
    Section 611.330(a) the detection
    limit must not exceed I pCi/L. To
    deter-mine compliance
    with
    Section 611.330(b) the detection limit float not exceed 3 pCi/L.
    2)
    To deter-mine comnpliance with Section 611.331
    the detection
    limits must not exceed the concentrations listed in that
    Section.
    d)
    To judge compliance with the UCLs listed in Sections 611.330 and
    611.331, averages of
    data must be used and must be rounded to
    the
    sane number- of significant figures as the
    MCL
    for the substance
    in
    question.
    BOARD NOTE: Derived from 40 CFR 141.25 (1989).
    (Source:
    Amended at 14 Il. Reg.
    ,
    effective
    IT IS SO ORDERED.
    I, Dorothy A. Gunn, Clerk of the Illinois Pollution Control Board, hereby
    certify that the above Opinion and Order
    was adopted on the/; ~ day
    of
    ~--1~-~
    ~‘,
    1990, by a vote of
    7
    -
    /
    .--
    Dorothy A. Corn, Clerk
    illinois Pollution Control Board
    115—81

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