[Federal Register Volume 67, Number 205 (Wednesday, October 23, 2002)]
[Rules and Regulations]
[Pages 65220-65253]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 02-23727]



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Part III





Environmental Protection Agency





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40 CFR Parts 136, 141, and 143



Guidelines Establishing Test Procedures for the Analysis of Pollutants 
Under the Clean Water Act; National Primary Drinking Water Regulations; 
and National Secondary Drinking Water Regulations; Methods Update; 
Final Rule

  Federal Register / Vol. 67, No. 205 / Wednesday, October 23, 2002 / 
Rules and Regulations  

[[Page 65220]]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 136, 141, and 143

[FRL-7379-6]
RIN 2040-AD59


Guidelines Establishing Test Procedures for the Analysis of 
Pollutants Under the Clean Water Act; National Primary Drinking Water 
Regulations; and National Secondary Drinking Water Regulations; Methods 
Update

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: This final rule revises wastewater and drinking water 
regulations to include updated versions of test procedures (i.e., 
analytical methods) for the determination of chemical, radiological, 
and microbiological pollutants and contaminants in wastewater and 
drinking water. The updated versions of analytical methods have been 
published by one or more of the following organizations: ASTM 
International (ASTM; formerly the American Society for Testing and 
Materials), United States Geological Survey (USGS), United States 
Department of Energy (DOE), American Public Health Association (APHA), 
American Water Works Association (AWWA), and Water Environment 
Federation (WEF). Previously approved versions of the methods remain 
approved.

DATES: This final rule is effective on November 22, 2002. The 
incorporation by reference of the publications listed in today's rule 
is approved by the Director of the Federal Register as of November 22, 
2002. For judicial review purposes, this final rule is promulgated as 
of 1 p.m. (Eastern time) on November 6, 2002 as provided at 40 CFR 23.2 
and 23.7.

ADDRESSES: The record for this rulemaking has been established under 
docket number W-99-21. Copies of the public comments received, EPA 
responses, and all other supporting documents (including references 
included in this document) are available for review at the U.S. 
Environmental Protection Agency, Water Docket, on Monday through 
Friday, excluding Federal holidays, between 9 a.m. and 3:30 p.m. 
Eastern Time. Please contact the Water Docket for an appointment. From 
August 12, 2002 through August 26, 2002, the Water Docket will be 
closed. Beginning on August 27, 2002, the Water Docket will be located 
at EPA West, 1301 Constitution Avenue, NW., Room B135, Washington, DC 
202-566-2426.

FOR FURTHER INFORMATION CONTACT: For information regarding wastewater 
methods contact Khouane Ditthavong, Engineering and Analysis Division 
(4303T), USEPA Office of Science and Technology, 1200 Pennsylvania 
Ave., NW., Washington, DC 20460, 202-566-1068 (e-mail: 
[email protected]). For information regarding the drinking 
water methods, contact Herbert J. Brass, Technical Support Center (MS 
140), USEPA, Office of Ground Water and Drinking, 26 West Martin Luther 
King Drive, Cincinnati, OH 45268 (e-mail: [email protected]).

SUPPLEMENTARY INFORMATION:

Potentially Regulated Entities

A. Clean Water Act

    EPA Regions, as well as States, Territories, and Tribes, are 
authorized to implement the National Pollutant Discharge Elimination 
System (NPDES) program, issue permits that comply with the technology-
based and water quality-based requirements of the Clean Water Act. In 
doing so, the NPDES permitting authorities, including authorized 
States, Territories, and Tribes, make a number of discretionary choices 
associated with permit writing, including the selection of pollutants 
to be measured and, in many cases, limited, in permits. If EPA has 
``approved'' (i.e., promulgated through rulemaking) standardized 
testing procedures for a given pollutant, the NPDES permit must specify 
that analysis of that pollutant be conducted in accordance with one of 
the approved testing procedures or an approved alternate test 
procedure. Permitting authorities may, at their discretion, require the 
use of any method approved at 40 CFR part 136 in the permits they 
issue. Therefore, NPDES permits may incorporate the testing procedures 
in today's rulemaking so dischargers with NPDES permits could be 
affected by the standardization of testing procedures in this 
rulemaking. In addition, States, Territories, or authorized Tribes 
responsible for providing certification of Federal licenses under Clean 
Water Act section 401, could be regulated by today's rulemaking because 
these organizations are directed to use the standardized testing 
procedures. Categories and entities that may ultimately be regulated 
include:

------------------------------------------------------------------------
                                      Examples of potentially regulated
             Category                             entities
------------------------------------------------------------------------
State, Territorial, and Tribal      States, Territories, and Tribes
 Governments.                        authorized to administer the NPDES
                                     permitting program; States,
                                     Territories, and Tribes providing
                                     certification under Clean Water Act
                                     section 401.
------------------------------------------------------------------------

B. Safe Drinking Water Act

    Public water systems are the regulated entities required to conduct 
analyses to measure for contaminants in water samples. However, EPA 
Regions, as well as States, and Tribal governments with primacy to 
administer the regulatory program for public water systems under the 
Safe Drinking Water Act, sometimes conduct analyses to measure for 
contaminants in water samples. If EPA has established a maximum 
contaminant level (``MCL'') for a given drinking water contaminant, the 
Agency also approves (i.e., promulgates through rulemaking) 
standardized testing procedures for analysis of the contaminant. Once 
EPA standardizes such test procedures, analysis using a standard (or 
approved alternate test procedures) is required. Public water systems 
required to test water samples must use one of the approved 
standardized test procedures. Categories and entities that may 
ultimately be regulated include:

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                                   Examples of potentially
           Category                  regulated entities        NAICS \a\
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State, Local, and Tribal       State, Local, and Tribal           924110
 Governments.                   Governments that analyze
                                water samples on behalf of
                                public water systems required
                                to conduct such analysis;
                                State, Local, and Tribal
                                Governments that operate
                                public water systems required
                                to conduct analytic
                                monitoring.
Industry.....................  Private operators of public        221310
                                water systems required to
                                conduct analytic monitoring.

[[Page 65221]]

 
Municipalities...............  Municipal operators of public     924110
                                water systems required to
                                conduct analytic monitoring.
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\a\ National American Industrial Classification System.

    These tables are not intended to be exhaustive, but rather provide 
a guide for readers regarding entities likely to be regulated by this 
action. The tables list the types of entities that EPA is now aware 
could potentially be regulated by this action. Other types of entities 
not listed in the tables could also be regulated. To determine whether 
your facility or organization is regulated by this action, you should 
carefully examine the applicability language at 40 CFR 136.1 (NPDES 
permits and CWA) and 40 CFR 141.2 (definition of public water system). 
If you have questions regarding the applicability of this action to a 
particular entity, consult the appropriate person listed in the 
preceding FOR FURTHER INFORMATION CONTACT section.

Information on Internet Access

    This Federal Register document has been placed on the Internet at 
the following location: http://www.epa.gov/fedrgstr.

Availability and Sources for Methods

    Copies of final methods published by ASTM are available for a 
nominal cost through ASTM International, 100 Barr Harbor Drive, West 
Conshohocken, PA 19428-2959. Copies of final methods published by USGS 
are available for a nominal cost through the United States Geological 
Survey, U.S. Geological Survey Information Services, Box 25286, Federal 
Center, Denver, CO 80225-0425. Copies of final methods published by DOE 
are available for a nominal cost through the Environmental Measurements 
Laboratory, U.S. Department of Energy, 376 Hudson Street, New York, NY 
10014-3621. Copies of Standard Methods are available for a nominal cost 
from the American Public Health Association, 1015 Fifteenth Street, 
NW., Washington, DC 20005.

I. Legal Authorities

A. Clean Water Act

    This regulation is promulgated under the authority of sections 301, 
304(h), 307, and 501(a) of the Clean Water Act (CWA), 33 U.S.C. 1311, 
1314(h), 1317, 1361(a) (the ``Act''). Section 301 of the Act prohibits 
the discharge of any pollutant into navigable waters unless the 
discharge complies with a National Pollutant Discharge Elimination 
System (NPDES) permit, issued under section 402 of the Act. Section 
304(h) of the Act requires the EPA Administrator to ``promulgate 
guidelines establishing test procedures for the analysis of pollutants 
that shall include the factors which must be provided in any 
certification pursuant to section 401 of this Act or permit 
applications pursuant to section 402 of this Act.'' Section 501(a) of 
the Act authorizes the Administrator to ``prescribe such regulations as 
are necessary to carry out his functions under this Act.'' EPA 
publishes CWA analytical method regulations at 40 CFR Part 136. The 
Administrator also has made these test procedures applicable to 
monitoring and reporting of NPDES permits (40 CFR part 122, Sec. Sec.  
122.21, 122.41, 122.44, and 123.25), and to implementation of the 
pretreatment standards issued under section 307 of the Act (40 CFR part 
403, Sec. Sec.  403.10 and 403.12).

B. Safe Drinking Water Act

    The Safe Drinking Water Act (SDWA), as amended in 1996, requires 
EPA to promulgate national primary drinking water regulations (NPDWRs) 
that specify maximum contaminant levels (MCLs) or treatment techniques 
for drinking water contaminants (SDWA section 1412 (42 U.S.C. 300g-1)). 
NPDWRs apply to public water systems pursuant to SDWA section 
1401(1)(A) (42 U.S.C. 300f(1)(A)). According to SDWA section 
1401(1)(D), NPDWRs include ``criteria and procedures to assure a supply 
of drinking water which dependably complies with such maximum 
contaminant levels; including accepted methods for quality control and 
testing procedures * * *'' (42 U.S.C. 300f(1)(D)). In addition, SDWA 
section 1445(a) authorizes the Administrator to establish regulations 
for monitoring to assist in determining whether persons are acting in 
compliance with the requirements of the SDWA (42 U.S.C. 300j-4). EPA's 
promulgation of analytical methods is authorized under these sections 
of the SDWA as well as the general rulemaking authority in SDWA section 
1450(a), (42 U.S.C. 300j-9(a)).

II. Regulatory Background and History

    EPA has promulgated analytical methods for all currently regulated 
wastewater and drinking water pollutants and contaminants. For most 
contaminants, EPA has promulgated regulations approving the use of more 
than one standardized analytical method, and regulated entities may use 
any one of these approved methods for determining compliance with an 
MCL, an NPDES permit or another monitoring requirement. After any 
regulation is published, EPA may amend the regulations to approve 
additional methods or modifications to existing approved methods, or 
withdraw approved methods that become obsolete.
    On January 16, 2001, EPA published a direct final rule that was to 
approve many updated methods published by non-EPA organizations for use 
in wastewater and drinking water compliance monitoring (66 FR 3466-
3497). On the same day, EPA published a companion proposal that 
proposed approval of all methods in the direct final rule methods (66 
FR 3526-3527). The proposal was to serve as the basis for a final rule 
if the direct final was withdrawn due to adverse comments. Because 
adverse comments were received from one commenter, EPA withdrew the 
direct final rule on May 15, 2001 (66 FR 26795) and deferred final 
action in order to respond to those comments. Today's rulemaking 
constitutes EPA's final action on the proposed rule.

III. Summary of Final Rule

    A. This rule amends the regulations at 40 CFR part 136 to:
    (1) Allow the use of 19 updated methods published by the ASTM 
International (ASTM; formerly the American Society for Testing and 
Materials) in the 1999 Annual Book of ASTM Standards, Vols. 11.01 and 
11.02.
    (2) Allow the use of 189 updated methods published by the Standard 
Methods Committee in Standard Methods for the Examination of Water and 
Wastewater, 19th edition, 1995, and 20th edition, 1998.
    (3) Allow the use of 22 methods published by the United States 
Geological Survey (USGS) in open file reports and method compendiums.
    (4) Correct minor editorial errors and update method source 
references.
    B. This rule amends the regulations at 40 CFR Part 141 to:
    (1) Allow the use of 12 updated methods published in the 1999 
Annual Book of ASTM Standards, Vols. 11.01 and 11.02.
    (2) Allow the use of 62 updated methods published by the Standard

[[Page 65222]]

Methods Committee in Standard Methods for the Examination of Water and 
Wastewater, 20th edition, 1998.
    (3) Allow the use of six updated methods published by the 
Department of Energy (DOE) in the document ``EML Procedures Manual,'' 
28th Edition, Volume 1, 1997, for determinations of radionuclide 
contaminants.
    (4) Correct minor editorial errors and update method source 
references.
    C. This rule amends the regulations at 40 CFR Part 143 to:
    (1) Recommend an updated version of a method (D 4327-97) published 
in the 1999 Annual Book of ASTM Standards, Vol. 11.01.
    (2) Recommend updated versions of 12 methods published by the 
Standard
    Methods Committee in Standard Methods for the Examination of Water 
and Wastewater, 20th edition, 1998.
    (3) Correct update method source references.

IV. Changes From the January 16, 2001 Rule Proposal

A. Editorial Corrections

    Standard Methods 6220 B, 6230 B, and 6200 C were correctly 
specified in the rule text of the January, 16, 2001, direct final rule, 
but they were incorrectly referenced in Table 3 (64 FR 3470) of the 
preamble to that rule. Corrections to the preamble errors are noted as 
follows:

               Standard Methods Number Changes (Corrected)
------------------------------------------------------------------------
      18th edition             19th edition            20th edition
------------------------------------------------------------------------
6220 B                   6220 B                   6200 C
6230 B                   6230 B                   6200 C
------------------------------------------------------------------------

Edits to 40 CFR Part 136
    Two errors in the rule section of the January 2001 direct final 
rule at 40 CFR part 136.3 are corrected in today's rule as follows:
    (1) A portion of a citation originally intended as a placeholder in 
footnote 45 to Table IB was inadvertently included. This citation is 
corrected to reference the correct USGS document number. ``98-xxx'' is 
changed to ``00-170.''
    (2) Footnote 44 to Table 1B is renumbered, and a new footnote 44 is 
added to conform with a final rule that was published on December 30, 
1999 (64 FR 73414). The December 1999 rule renumbered footnote 44 to 
footnote 51, and amended footnote 44 to specify information about a 
cyanide method that was the subject of the December 1999 rule. The 
direct final rule inadvertently overlooked these 1999 amendments.
Edits to 40 CFR Part 141
    A commenter noted an error and EPA noted an omission in the 
references to methods at 40 CFR part 141.21 for determination of E 
coli. in drinking water. The error and omission are addressed, in 
today's rule, by revising 40 CFR 141.21 as follows:
    (1) Footnote 1 to the table in paragraph (f)(3), paragraphs 
(f)(6)(i), (f)(6)(ii) and (f)(8) are revised to clarify instructions 
for the determining E coli. A commenter noted that the E coli. methods 
in the 19th and 20th editions of Standard Methods describe or reference 
procedures differently than the 18th edition version of these methods. 
These differences are editorial, not substantive, and all three 
versions of these methods provide equivalent results. Today's 
correction adds clarifying language to make the equivalency of the 
18th, 19th and 20th edition versions of these E coli. methods more 
apparent.
    (2) Sentence 6 of paragraph (f)(5) is revised to add a citation to 
the 20th edition of Standard Methods that was inadvertently omitted in 
the January 2001 direct final rule. The Agency's intent in the January 
16, 2001 direct final rulemaking was and is to allow use of more recent 
editions of Standard Methods, such as the 20th edition.

B. Additional Technical Edits to 40 CFR Part 136.3

    A commenter noted several editorial errors in the current 40 CFR 
part 136.3 tables. EPA is correcting these errors in today's rule. 
Correction of these errors is not a substantive change to EPA 
regulations. These are simple editorial corrections that improve the 
clarity and accuracy of the regulations.
Edits to Table 1C
    (1) A typographical error in the listing of the method for 
parameter 3 (acrolein) is corrected. Method ``604'' is changed to 
``624.''
    (2) An incorrect reference to Method 610 for parameter 4, 
acrylonitrile, is removed. Method 610 is not applicable to 
determinations of acrylonitrile.
    (3) An incorrect reference to Method 6410B for parameter 22, carbon 
tetrachloride is removed. Method 6410B is not applicable to 
determinations of carbon tetrachloride.
    (4) A misspelling of the analyte listing for parameter 27 is 
corrected, ``chloraform'' is changed to ``chloroform.'' Also, a missing 
number in the note specified in the ``Other'' column was inadvertently 
omitted, ``Note, p. 130.'' is changed to ``Note 3, p. 130.''
    (5) A missing reference to footnote 5 is added to parameter 82, N-
Nitrosodimethylamine, and removed for parameters 83 and 103, N-
Nitrosodi-n-propylamine, and 2,3,7,8-tetrachlorodibenzo-p-dioxin, 
respectively. Footnote 5 expands the analytical scope of Method 625 to 
include additional parameters. However, the annotation of these 
parameters in Table IC omitted parameter 82, and should not have 
included parameters 83 and 103.
    (6) A typographical error in the analyte listing for parameter 87 
is corrected, 2,2'-oxybis(1-chloropropane) is changed to 2,2'-oxybis(1-
chloropropane). In addition, an alternative analyte name, bis(2-
chloroisopropyl) ether, is added for parameter 87. These changes 
conform the CFR listing of parameter 87 with the dual, equivalent name 
designation of this parameter in the methods (EPA Methods 611, 625 and 
1625B) approved for compliance determinations of parameter 87.
    (7) A typographical error in the reference to the compliance method 
for parameter 105, tetrachloroethene, is corrected. Method ``6410 B 
[18th, 19th]'' is changed to ``6210 B [18th, 19th].'' Method 6410 B is 
not applicable to determinations of tetrachloroethene.
    (8) An incorrect reference to Method ``1625\5a\'' for parameter 103 
(2,3,7,8-tetrachlorodibenzo-p-dioxin) is removed along with the 
superfluous footnote 5a to table 1C. Method 1625 is not applicable to 
determinations of this parameter.
Edits to Table 1D
    A typographical error in the analyte listing for parameter 11 is 
corrected. ``[delta]-BHC'' is changed to ``[gamma]-BHC.''
Edits to Tables 1B and 1C
    To correctly specify the approved revision of listed EPA methods, a 
revision letter is added to the method

[[Page 65223]]

listings for EPA methods in Table 1C. References to EPA methods 
``1613,'' ``1624'' and ``1625'' are changed to ``1613B,'' ``1624B'' and 
``1625B,'' respectively. In Table IB, EPA Method ``1631'' is changed to 
``1631C.''

V. Response to Comments

    EPA proposed the method updates in today's rule on January 16, 2001 
(66 FR 3526). The public comment period closed on March 19, 2001. EPA 
received comments from one commenter. A discussion of the significant 
comments follows. A complete copy of the comments and EPA's responses 
are included in the Docket for today's final rule.

A. Approving Multiple Editions of Standard Methods

    The commenter stated that approval of multiple editions of Standard 
Methods is a new requirement and an added burden to the regulatory 
authorities that must keep track of all approved methods. EPA disagrees 
that tracking multiple editions of Standard Methods is a new 
requirement or unduly burdensome. The Agency currently cites more than 
one edition of the same method, e.g. footnote 4 to the table of 
inorganic methods at 40 CFR 141.23 allows use of either the 18th or 
19th edition versions of all the Standard Methods listed in the table. 
For this reason, the Agency always cites an approved method by both 
method number and date (or edition) of publication to avoid confusion 
about which versions are approved, and to allow incorporation of the 
method by reference in the CFR in lieu of publication of the entire 
method in the CFR. This citation policy means that existing State 
databases would be designed to accommodate the edition as well as the 
number of an approved method so that multiple versions of an approved 
method can be tracked.
    EPA recognizes that there are tradeoffs between the current 
approach of allowing use of several versions of a test method, and the 
suggested revision (received in a comment) to allow only the most 
recent version of that method. Allowing use of only the 20th edition of 
Standard Methods may have more consequences than just the purchase of 
the 20th edition book. A laboratory may routinely use only a few 
methods that are published in Standard Methods, and these may be 
methods that have been reprinted in the 20th edition with no editorial 
or technical changes. Under the suggested revision to allow use of only 
the 20th edition of Standard Methods, a laboratory may be required to 
update method citations in existing quality assurance manuals and 
laboratory standard operating procedures as well as provide analysts 
with a copy of the 20th edition version of the method even when the 
methods have not changed from previous editions.
    Furthermore, withdrawal of previous editions of Standard Methods 
was not proposed for public comment in the January 2001 rule, and the 
suggestion to allow use of only the 20th edition of Standard Methods is 
outside the scope of today's regulatory amendments. Public comment on 
previous proposals to withdraw older versions of methods, indicated 
that most laboratories prefer the flexibility to use these versions if 
the methods have not changed significantly in new editions of the 
manuals. Thus, EPA continues to allow use of older editions of Standard 
Methods.

B. Technical Differences Between Methods

    The commenter suggested that some methods in the 18th edition of 
Standard Methods are obsolete because of technical and editorial 
updates in newer editions. EPA disagrees that the methods in the 18th 
edition of Standard Methods approved in today's rule are obsolete.
    The methods approved by today's rule are technically equivalent to 
previously approved versions. Only methods using time-tested 
technologies are approved by today's rule. For the purposes of 
compliance monitoring, however, none of these methods are obsolete and 
all methods provide the necessary technical information. Therefore, EPA 
believes the use of previously approved editions of Standard Methods 
continues to be appropriate.

C. Withdrawing Methods That Use Older Technology

    The commenter suggested colorimetric methods for trace metals 
analysis, with the exception of hexavalent chromium, be dropped from 
the list of approved methods at 40 CFR part 136, Table IB, arguing that 
these methods are obsolete. The commenter stated that many of these 
methods list interferences not encountered by atomic absorption, atomic 
emission, or mass spectrometry techniques. The commenter also stated 
that many of these methods also increase the amount of hazardous waste 
generated in the laboratory and that the detection limits attained by 
the colorimetric methods may not be low enough to meet permit 
requirements. EPA disagrees for several reasons.
    Colorimetric metals methods have been in use a long time, and 
explain how to handle the analytical difficulties noted by the 
commenter. Although many of the colorimetric methods have the potential 
to generate more laboratory wastes than some newer methods, these 
methods produce acceptable compliance monitoring information, and the 
commenter did not provide any data to demonstrate otherwise. 
Colorimetric methods often provide a low-cost alternative to high 
energy analysis methods that have high labor and equipment costs. 
Finally, withdrawal of these methods was not proposed for public 
comment and is outside the scope of today's amendments.

D. Digestion Preceding Sample Analysis

    The commenter noted that 40 CFR part 136.3, Table IB, parameter 31, 
referring to total Kjeldahl nitrogen (TKN), specifies ``digestion and 
distillation followed by'' one of several new techniques. The commenter 
asked if ``digestion and distillation followed by'' means that 
digestion and distillation are required prior to analysis of a sample 
for NPDES compliance monitoring. EPA requires the use of separate 
digestion and distillation procedures prior to TKN analysis by certain 
methods, as specified in Table IB. ``Digestion and distillation 
followed by,'' in the context of Table IB, requires the use of one of 
the listed digestion and distillation procedures for the Titration, 
Nesslerization and Electrode test methods. Today's rule reformats Table 
IB with appropriate indentation to reflect this requirement more 
clearly.
    Other TKN methods explicitly require alternate sample preparation 
procedures, such as the semiautomated block digestion (e.g., EPA Method 
351.2). For these methods, TKN analysis does not require the use the 
digestion and distillation procedures discussed in the preceding 
paragraph, because the alternate sample preparation procedures will 
provide the desired results.

E. Metals Methods in 20th Edition of Standard Methods

    The commenter inquired about the status of the graphite furnace and 
flame atomic absorption methods for metals analyses (GFAA and FLAA, 
respectively) that were revised in the 20th edition of Standard 
Methods, but not proposed for approval in the January 16, 2001 rule. 
The commenter recommended that EPA either approve or not approve all 
versions (18th, 19th and 20th edition) and not split approval of these 
methods by edition number. EPA did not propose, and today's rule does 
not approve, the 20th Edition versions of Methods 3111B, 3111D,

[[Page 65224]]

3112 B, 3113 B and 3114 B, which include the GFAA and FLAA methods 
noted by the commenter. These versions of the five methods are not 
acceptable because the method performance requirements specified in the 
20th edition are not equivalent or better than in the 18th and 19th 
edition versions of these methods. The 20th edition of Standard Methods 
introduces less stringent quality control (QC) acceptance criteria (in 
Section 3020 of each method) than in the older versions. Specifically, 
the 18th and 19th edition versions specify that a recovery of a check 
standard outside the range of 95% to 105% suggests a potential problem, 
and a recovery outside the range of 90% to 110% indicates that the 
system is out of control. The 20th edition weakened and increased these 
limits to 90% to 100% and 80% to 120%, respectively. The editors of 
Standard Methods did not provide a basis for weakening the QC 
requirements in these methods, and they did not suggest applying these 
less stringent criteria to previous editions of the methods.

VI. Administrative Requirements

A. Executive Order 12866: Regulatory Planning and Review

    Under Executive Order 12866 (58 FR 51735; October 4, 1993), the 
Agency must determine whether the regulatory action is ``significant'' 
and, therefore, subject to OMB review and the requirements of the 
Executive Order. The Order defines ``significant regulatory action'' as 
one that is likely to result in a rule that may:
    (1) Have an annual effect on the economy of $100 million or more, 
or adversely affect in a material way the economy, a sector of the 
economy, productivity, competition, jobs, the environment, public 
health or safety, or State, local, or Tribal governments or 
communities;
    (2) Create a serious inconsistency or otherwise interfere with an 
action taken or planned by another agency;
    (3) Materially alter the budgetary impact of entitlements, grants, 
user fees, or loan programs or the rights and obligations of recipients 
thereof; or
    (4) Raise novel legal or policy issues arising out of legal 
mandates, the President's priorities, or the principles set forth in 
the Executive Order.
    It has been determined that this rule is not a ``significant 
regulatory action'' under the terms of Executive Order 12866 and is 
therefore not subject to OMB review.

B. Regulatory Flexibility Act (RFA), as Amended by the Small Business 
Regulatory Enforcement Fairness Act of 1996 (SBREFA), 5 U.S.C. 601 et. 
seq.

    The RFA generally requires an agency to prepare a regulatory 
flexibility analysis of any rule subject to notice and comment 
rulemaking requirements under the Administrative Procedure Act or any 
other statute unless the agency certifies that the rule will not have a 
significant economic impact on a substantial number of small entities. 
Small entities include small businesses, small organizations, and small 
governmental jurisdictions.
    The RFA provides default definitions for each type of small entity. 
It also authorizes an agency to use alternative definitions for each 
category of small entity, ``which are appropriate to the activities of 
the agency'' after proposing the alternative definition(s) in the 
Federal Register and taking comment (5 U.S.C. 601(3)-(5).) In addition 
to the above, to establish an alternative small business definition, 
agencies must consult with the Small Business Administration's (SBA) 
Chief Counsel for Advocacy.
    For purposes of assessing the impacts of today's rule on small 
entities under the SDWA, EPA considered small entities to be public 
water systems serving fewer than 10,000 persons. This is the cut-off 
level specified by Congress in the 1996 Amendments to the SDWA for 
small system flexibility provisions. In accordance with the RFA 
requirements, EPA proposed using this alternative definition in the 
Federal Register (63 FR 7620, February 13, 1998), requested comment, 
consulted with the SBA, and expressed its intention to use the 
alternative definition for all future drinking water regulations in the 
Consumer Confidence Reports regulation (63 FR 44511, August 19, 1998). 
As stated in that final rule, the alternative definition would be 
applied to this regulation as well.
    For purposes of assessing the impacts of today's rule on small 
entities under the CWA, we defined: (1) Small businesses according to 
SBA size standards; (2) small governmental jurisdictions as governments 
of a city, county, town, school district or special district with a 
population of less than 50,000; and (3) small organizations as any not-
for-profit enterprise which is independently owned and operated and is 
not dominant in its field.
    After considering the economic impacts of today's final rule on 
small entities, I certify that this action will not have a significant 
economic impact on a substantial number of small entities. This final 
rule will not impose any requirements on small entities. Today's rule 
approves additional updated versions of ASTM Methods, Standard Methods, 
United States Geological Survey (USGS) methods, and United States 
Department of Energy (DOE) methods for compliance with wastewater 
monitoring and drinking water standards and monitoring requirements but 
does not require the use of these specific versions. Previous versions 
of these ASTM, Standard Methods, USGS, and DOE methods are not being 
withdrawn. State, territorial, Tribal, and local governments and public 
and privately owned public water systems and laboratories performing 
analyses on behalf of these systems may continue to use the previous 
versions after the promulgation of today's rule. The final rule merely 
provides additional options. Any of the testing procedures currently 
listed at 40 CFR parts 136, 141, or 143 can be used if monitoring is 
otherwise required for this pollutant under the CWA or SDWA. This rule 
also makes minor technical corrections and clarifications to the 
regulations.

C. Unfunded Mandates Reform Act

    Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), Public 
Law 104-4, establishes requirements for Federal agencies to assess the 
effects of their regulatory actions on State, local, and Tribal 
governments and the private sector. Under section 202 of the UMRA, EPA 
generally must prepare a written statement, including a cost-benefit 
analysis, for proposed and final rules with ``Federal mandates'' that 
may result in expenditures to State, local, and Tribal governments, in 
the aggregate, or to the private sector, of $100 million or more in any 
one year. Before promulgating an EPA rule for which a written statement 
is needed, section 205 of the UMRA generally requires EPA to identify 
and consider a reasonable number of regulatory alternatives and adopt 
the least costly, most cost-effective or least burdensome alternative 
that achieves the objectives of the rule. The provisions of section 205 
do not apply when they are inconsistent with applicable law. Moreover, 
section 205 allows EPA to adopt an alternative other than the least 
costly, most cost-effective or least burdensome alternative if the 
Administrator publishes with the final rule an explanation why that 
alternative was not adopted.
    Before EPA establishes any regulatory requirements that may 
significantly or uniquely affect small governments, including Tribal 
governments, it must

[[Page 65225]]

have developed under section 203 of the UMRA a small government agency 
plan. The plan must provide for notifying potentially affected small 
governments, enabling officials of affected small governments to have 
meaningful and timely input in the development of EPA regulatory 
proposals with significant Federal intergovernmental mandates, and 
informing, educating, and advising small governments on compliance with 
the regulatory requirements.
    Today's rule contains no Federal mandates (under the regulatory 
provisions of Title II of the UMRA) for State, local, or Tribal 
governments or the private sector. This rule imposes no enforceable 
duty on any State, local or Tribal governments or the private sector. 
EPA has determined that this rule contains no regulatory requirements 
that might significantly or uniquely affect small governments. Thus, 
today's rule is not subject to the requirements of sections 202, 203, 
and 205 of the UMRA.
    This rule provides additional analytical methods with which to 
conduct analyses for contaminants in wastewater and drinking water, and 
thus provides operational flexibility to laboratory analysts. Since the 
rule does not withdraw earlier versions of methods, EPA anticipates no 
increase in expenditure or burden.

D. Paperwork Reduction Act

    This action does not impose an information collection burden under 
the provisions of the Paperwork Reduction Act, 44 U.S.C. 3501 et seq. 
This action merely provides additional options on the selection of 
testing procedures when monitoring is otherwise required under the CWA 
or SDWA. Any of the testing procedures approved at 40 CFR parts 136, 
141, or 143 can be used if such monitoring is required for a pollutant 
or contaminant. Burden means the total time, effort, or financial 
resources expended by persons to generate, maintain, retain or disclose 
or provide information to or for a Federal agency. This includes the 
time needed to review instructions; develop, acquire, install, and 
utilize technology and systems for the purpose of collecting, 
validating, and verifying information processing and maintaining 
information, and disclosing and providing information; adjust the 
existing ways to comply with any previously applicable instructions and 
requirements; train personnel to be able to respond to a collection of 
information; search data sources; complete and review the collection of 
information; and transmit or otherwise disclose the information.
    An agency may not conduct or sponsor, and a person is not required 
to respond to a collection of information unless it displays a 
currently valid OMB control number. The OMB control numbers for EPA's 
regulations are listed in 40 CFR part 9 and 48 CFR Chapter 15.

E. National Technology Transfer and Advancement Act

    As noted in the proposed rule, Section 12(d) of the National 
Technology Transfer and Advancement Act of 1995, (``NTTAA''), Public 
Law 104-113, section 12(d) (15 U.S.C. 272 note), directs EPA to use 
voluntary consensus standards in its regulatory activities unless to do 
so would be inconsistent with applicable law or otherwise impractical. 
Voluntary consensus standards are technical standards (e.g., material 
specifications, test methods, sampling procedures, and business 
practices) that are developed or adopted by voluntary consensus 
standard bodies. The NTTAA directs EPA to provide Congress, through the 
Office of Management and Budget (OMB), explanations when the Agency 
decides not to use available and applicable voluntary consensus 
standards. In this rulemaking EPA is approving updated versions of 
previously approved voluntary consensus standards published by ASTM and 
Standard Methods for many wastewater and drinking water contaminants.

F. Executive Order 13045: Protection of Children From Environmental 
Health Risks and Safety Risks

    Executive Order 13045 (62 FR 19885, April 23, 1997) applies to any 
rule that: (1) Is determined to be ``economically significant'' as 
defined under Executive Order 12866, and (2) concerns an environmental 
health or safety risk that EPA has reason to believe may have a 
disproportionate effect on children. If the regulatory action meets 
both criteria, the Agency must evaluate the environmental health or 
safety effects of the planned rule on children, and explain why the 
planned regulation is preferable to other potentially effective and 
reasonably feasible alternatives considered by the Agency. This rule is 
not subject to Executive Order 13045 because it is neither 
``economically significant'' as defined under Executive Order 12866, 
nor does it concern an environmental health or safety risk that EPA has 
reason to believe may have a disproportionate effect on children.

G. Executive Order 13132: Federalism

    Executive Order 13132, entitled ``Federalism'' (64 FR 43255, August 
10, 1999), requires EPA to develop an accountable process to ensure 
``meaningful and timely input by State and local officials in the 
development of regulatory policies that have federalism implications.'' 
``Policies that have federalism implications'' is defined in the 
Executive Order to include regulations that have ``substantial direct 
effects on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.''
    This final rule does not have federalism implications. It will not 
have substantial direct effects on the States, on the relationship 
between the national government and the States, or on the distribution 
of power and responsibilities among the various levels of government, 
as specified in Executive Order 13132. Today's rule provides 
governmental and other public and private entities conducting analysis 
in wastewater and drinking water the option to use additional, updated 
analytical methods to monitor pollutants under the CWA or SDWA. Such 
regulated entities may choose any of these additional methods or 
continue to use the methods listed under 40 CFR parts 136, 141, and 
143. Thus, Executive Order 13132 does not apply to this rule.

H. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    Executive Order 13175, entitled ``Consultation and Coordination 
with Indian Tribal Governments'' (65 FR 67249, November 9, 2000), 
requires EPA to develop an accountable process to ensure ``meaningful 
and timely input by Tribal officials in the development of regulatory 
policies that have tribal implications.'' ``Policies that have tribal 
implications'' is defined in the Executive Order to include regulations 
that have ``substantial direct effects on one or more Indian tribes, on 
the relationship between the Federal government and the Indian tribes, 
or on the distribution of power and responsibilities between the 
Federal government and the Indian tribes.''
    This final rule does not have tribal implications. It will not have 
substantial direct effects on tribal governments, on the relationship 
between the Federal government and Indian tribes, or on the 
distribution of power and responsibilities between the Federal 
government and Indian tribes, as specified in Executive Order 13175.

[[Page 65226]]

Today's rule provides Tribes conducting analysis in wastewater and 
drinking water the option to use additional updated analytical methods 
to monitor pollutants under the CWA or SDWA. Tribes may choose any of 
these additional methods or continue to use the methods listed under 40 
CFR parts 136, 141, and 143. Thus, Executive Order 13175 does not apply 
to this rule.

I. Congressional Review Act

    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996 (SBREFA), 
generally provides that before a rule may take effect, the agency 
promulgating the rule must submit a rule report, which includes a copy 
of the rule, to each House of the Congress and to the Comptroller 
General of the United States. EPA will submit a report containing this 
rule and other required information to the U.S. Senate, the U.S. House 
of Representatives, and the Comptroller General of the United States 
prior to publication of the rule in the Federal Register. A major rule 
cannot take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2). This rule will be effective on November 22, 2002.

J. Executive Order 13211: Energy Effects

    This rule is not subject to Executive Order 13211, ``Actions 
Concerning Regulations That Significantly Affect Energy Supply, 
Distribution, or Use'' (66 FR 28355, May 22, 2001) because it is not a 
significant regulatory action under Executive Order 12866.

K. Plain Language Directive

    Executive Order 12866 requires each agency to write its rules in 
plain language. Readable regulations help the public find requirements 
quickly and understand them easily. They increase compliance, 
strengthen enforcement, and decrease mistakes, frustration, phone 
calls, appeals, and distrust of government. EPA made every effort to 
write this preamble to the final rule in as clear, concise, and 
unambiguous manner as possible. Today's final rule is mostly in a table 
format consistent with the format of the CFR sections we are amending.

List of Subjects

40 CFR Part 136

    Environmental protection, Incorporation by reference, Reporting and 
recordkeeping requirements, Water pollution control.

40 CFR Part 141

    Environmental protection, Chemicals, Incorporation by reference, 
Indians-lands, Intergovernmental relations, Radiation protection, 
Reporting and recordkeeping requirements, Water supply.

40 CFR Part 143

    Environmental protection, Chemicals, Indians-lands, Water supply.

    Dated: September 12, 2002.
Christine Todd Whitman,
Administrator.


    For the reasons set out in the preamble, title 40, chapter I of the 
Code of Federal Regulations, is amended as follows:

PART 136--GUIDELINES ESTABLISHING TEST PROCEDURES FOR THE ANALYSIS 
OF POLLUTANTS

    1. The authority citation for part 136 continues to read as 
follows:

    Authority: Secs. 301, 304(h), 307, and 501(a) Pub. L. 95-217, 91 
Stat. 1566, et seq. (33 U.S.C. 1251, et seq.) (The Federal Water 
Pollution Control Act Amendments of 1972 as amended by the Clean 
Water Act of 1977.)


    2. Section 136.3 is amended:
    a. In paragraph (a) by revising the introductory text and Tables 
IA, IB, IC, ID, and IE.
    b. In paragraph (b) by revising references (6) and (10), and adding 
references (44) through (51).


Sec.  136.3  Identification of test procedures.

    (a) Parameters or pollutants, for which methods are approved, are 
listed together with test procedure descriptions and references in 
Tables IA, IB, IC, ID, IE, and IF. The full text of the referenced test 
procedures are incorporated by reference into Tables IA, IB, IC, ID, 
IE, and IF. The incorporation by reference of these documents, as 
specified in paragraph (b) of this section, was approved by the 
Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 
1 CFR part 51. Copies of the documents may be obtained from the sources 
listed in paragraph (b) of this section. Information regarding 
obtaining these documents can be obtained from the EPA Office of Water 
Statistics and Analytical Support Branch at 202-566-1000. Documents may 
be inspected at EPA's Water Docket, EPA West, 1301 Constitution Avenue, 
NW., Room B135, Washington, DC (Telephone: 202-566-2426); or at the 
Office of the Federal Register, 800 North Capitol Street, NW., Suite 
700, Washington, DC. These test procedures are incorporated as they 
exist on the day of approval and a notice of anys change in these test 
procedures will be published in the Federal Register. The discharge 
parameter values for which reports are required must be determined by 
one of the standard analytical test procedures incorporated by 
reference and described in Tables IA, IB, IC, IE, and IF, or by any 
alternate test procedure which has been approved by the Administrator 
under the provisions of paragraph (d) of this section and Sec. Sec.  
136.4 and 136.5. Under certain circumstances (paragraph (b) or (c) of 
this section or 40 CFR 401.13) other test procedures may be more 
advantageous when such other test procedures have been previously 
approved by the Regional Administrator of the Region in which the 
discharge will occur, and providing the Director of the State in which 
such discharge will occur does not object to the use of such alternate 
test procedure.

                                                     Table IA.--List of Approved Biological Methods
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                        Standard Methods
       Parameter and units                 Method \1\                  EPA            18th, 19th, 20th ed.           ASTM                   USGS
--------------------------------------------------------------------------------------------------------------------------------------------------------
Bacteria:
    1. Coiform (fecal), number     Most Probable Number       p. 132 \3\...........  9221C E \4\
     per 100 mL.                    (MPN), 5 tube.            p. 124 \3\...........  9222D \4\              .....................  B-0050-85 \5\
                                   3 dilution, or Membrane
                                    filter (MF) \2\ single
                                    step.
    2. Coliform (fecal) in         MPN, 5 tube, 3 dilution,   p. 132 \3\...........  9221C E \4\
     presence of choline, number    or                        p. 124 \3\...........  9221D \4\
     per 100 mL.                   MF, single step \6\......
    3. Coliform (total), number    MPN, 5 tube, 3 dilution,   p. 114 \3\...........  9221B \4\
     per 100 mL.                    or                        p. 108 \3\...........  9222B \4\              .....................  B-0025-85 \5\
                                   MF \2\ single step or two
                                    step.

[[Page 65227]]

 
    4. Coliform (total), in        MPN, 5 tube, 3 dilution,   p. 114 \3\...........  9221B \4\
     presence of clorine, number    or.                       p. 111 \3\...........  9222 (B+B.5c) \4\
     per 100 mL.                   MF \2\ with enrichment...
    5. Fecal streptococci, number  MPN, 5 tube, 3 dilution..  p. 139 \3\...........  9230B \4\
     per 100 mL.                   MF \2\ or................  p. 136 \3\...........  9230C \4\              .....................  B-0055-85 \5\
                                   Plate count..............  p. 143 \3\...........  .....................  .....................
Aquatic Toxicity:
    6. Toxicity, acute, fresh      Daphnia, Ceriodaphnia,     Sec. 9 \7\
     water organisms, LC50,         Fathead Minnow, Rainbow
     percent effluent.              Trout, Brook Trout, or
                                    Bannerfish Shiner
                                    mortality.
    7. Toxicity, acute, estuarine  Mysid, Sheepshead Minnow,  Sec. 9 \7\
     and marine organisms, LC50,    or Menidia spp.
     percent effluent.              mortality.
    8. Toxicity, chromic, fresh    Fathead minnow larval      1000.0 \8\
     water organisms, NOEC or       survival and growth.
     IC25, percent effluent.
                                   Fathead minnow embryo-     1001.0 \8\
                                    larval survival and
                                    teratogenicity.
                                   Ceriodaphnia survival and  1002.0 \8\
                                    reproduction.
                                   Selenastrum growth.......  1003.0 \8\
    9. Toxicity, chronic           Sheepshead minnow larval   1004.0 \9\
     estuarine and marine           survival and growth.
     organisms, NOEC or IC25,
     percent effluent.
                                   Sheepshead minnow embryo-  1005.0 \9\
                                    larval survival and
                                    teratogenicity.
                                   Menidia beryllina larval   1006.0 \9\
                                    and growth.
                                   Mysidopsis bahia, growth,  1007.0 \9\
                                    and fecundity.
                                   Arbacia punctulata         1008.0 \9\
                                    fertilization.
                                   Champia parvula            1009.0 \9\
                                    reproduction.
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes to Table IA:
\1\ The method must be specified when results are reported.
\2\ A 0.45 [mu]m membrane filter (MF) or other pore size certified by the manufacturer to fully retain organisms to be cultivated and to be free of
  extractables which could interfere with their growth.
\3\ USEPA. 1978. Microbiological Methods for Monitoring the Environment, Water, and Wastes. Environmental Monitoring and Support Laboratory, U.S.
  Environmental Protection Agency, Cincinnati, Ohio. EPA/600/8-78/017.
\4\ APHA. 1998, 1995, 1992. Standard Methods for the Examination of Water and Wastewater. American Public Health Association. 20th, 19th, and 18th
  Editions. Amer. Publ. Hlth. Assoc., Washington, DC.
\5\ USGS. 1989. U.S. Geological Survey Techniques of Water-Resource Investigations, Book 5, Laboratory Analysis, Chapter A4, Methods for Collection and
  Analysis of Aquatic Biological and Microbiological Samples, U.S. Geological Survey, U.S. Department of the Interior, Reston, Virginia.
\6\ Because the MF technique usually yields low and variable recovery from chlorinated wastewaters, the Most Probable Number method will be required to
  resolve any controversies.
\7\ USEPA. 1993. Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms. Fourth Edition. Environmental Monitoring
  Systems Laboratory, U.S. Environmental Protection Agency, Cincinnati, Ohio. August 1993, EPA/600/4-90/027F.
\8\ USEPA. 1994. Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Third Edition.
  Environmental Monitoring Systems Laboratory, U.S. Environmental Protection Agency USEPA. 1994, Cincinnati, Ohio. (July 1994, EPA/600/4-91/002).
\9\ Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms. Second Edition.
  Environmental Monitoring Systems Laboratory, U.S. Environmental Protection Agency, Cincinnati, Ohio (July 1994, EPA/600/4-91/003). These methods do
  not apply to marine waters of the Pacific Ocean.


                                                                      Table 1B.--List of Approved Inorganic Test Procedures
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                 Reference (method number or page)
   Parameter, units and  method   --------------------------------------------------------------------------------------------------------------------------------------------------------------
                                              EPA 1, 35             Standard Methods [Edition(s)]               ASTM                          USGS \2\                         Other
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Acidity, as CaCO3, mg/L:
    Electrometric endpoint or      305.1.........................  2310 B(4a) [18th, 19th, 20th].  D1067-92......................  I-1020-85
     phenolphthalein endpoint.
                                                                                                                                   I-2030-85
2. Alkalinity, as CaCO3, mg/L:
    Electrometric of Colorimetric  310.1.........................  2320 B [18th, 19th, 20th].....  D1067-92......................  I-1030-85.....................  973.43 \3\
     titration to pH 4.5, manual   ..............................  ..............................  ..............................  ..............................
     or automatic.                 310.2.........................                                  ..............................  I-2030-85.....................

[[Page 65228]]

 
3. Aluminium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  202.1.........................  3111 D [18th, 19th]...........  ..............................  I-3051-85
    AA furnace...................  202.2.........................  3113 B [18th, 19th]...........
    Inductively Coupled Plasma/    200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\                  .............................
     Atomic Emission Spectrometry
     (ICP/AES) \36\.
    Direct Current Plasma (DCP)    ..............................  ..............................  D4190-94......................  ..............................  Note 34.
     \36\.
    Colorimetric (Eriochrome       ..............................  3500-Al B [20th] and 3500-Al D
     cyanine R).                                                    [18th, 19th].
 4. Ammonia (as N), mg/L:
    Manual, distillation (at pH    350.2.........................  4500-NH3 B [18th, 19th, 20th].  ..............................  ..............................  973.49 \3\
     9.5) \6\ followed by.
    Nesslerization...............  350.2.........................  4500-NH3 C [18th].............  D1426-98(A)...................  I-3520-85.....................  973.49 \3\
    Titration....................  350.2.........................  4500-NH3 C [19th, 20th] and
                                                                    4500-NH3 E [18th].
    Electrode....................  350.3.........................  4500-NH3 D or E [19th, 20th]    D1426-98(B)...................
                                                                    and 4500-NH3 F or G [18th].
    Automated phenate, or........  350.1.........................  4500-NH3 G [19th, 20th] and     ..............................  I-4523-85                       .............................
                                                                    4500-NH3 H [18th].
    Automated electrode..........  ..............................  ..............................  ..............................  ..............................  Note 7.
5. Antimony-Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  204.1.........................  3111 B [18th, 19th]
    AA furnace...................  204.2.........................  3113 B [18th, 19th]...........
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
6. Arsenic-Total\4\ mg/L:
    Digestion \4\ followed by....  206.5.........................
    AA gaseous hydride...........  206.3.........................  3114 B 4.d [18th, 19th].......  D2972-97(B)                     I-3062-85
    AA furnace...................  206.2.........................  3113 B [18th, 19th]...........  D2972-97(C)                     I-4063-98 \49\                  .............................
    ICP/AES \36\ or..............  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
    Colorimetric (SDDC)..........  206.4.........................  3500-As B [20th] and 3500-As C  D2972-97(A)                     I-3060-85                       .............................
                                                                    [18th, 19th].
7. Barium-Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \14\....  208.1.........................  3111 D [18th, 19th]...........  ..............................  I-3084-85                       .............................
    AA furnace...................  208.2.........................  3113 B [18th, 19th]...........  D4382-95
    ICP/AES \14\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
    DCP \14\.....................  ..............................  ..............................  ..............................  ..............................  Note 34.
8. Beryllium-Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  210.1.........................  3111 D [18th, 19th]...........  D3645-93(88)(A)...............  I-3095-85                       .............................
    AA furnace...................  210.2.........................  3113 B [18th, 19th]...........  D3645-93(88)(B)                                                 .............................
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\                  .............................
    DCP, or......................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric (aluminon.......  ..............................  3500-Be D [18th, 19th]........
9. Biochemical oxygen demand
 (BOD5), mg/L:
    Dissolved Oxygen Depletion...  405.1.........................  5210 B [18th, 19th, 20th].....  ..............................  I-1578-78 \8\.................  973.44,\3\ p. 17 \9\
10. Boron \37\-Total, mg/L:
    Colorimetric (curcumin)......  212.3.........................  4500-B B [18th, 19th, 20th]...  ..............................  I-3112-85
    ICP/AES, or..................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\                  .............................

[[Page 65229]]

 
    DCP..........................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
11. Bromide, mg/L:
    Titrimetric..................  320.1.........................  ..............................  D1246-95(C)...................  I-1125-85.....................  p. S44 \10\
12. Cadmium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  213.1.........................  3111 B or C [18th, 19th]......  D3557-95 (A or B).............  I-3135-85 or I-3136-85........  974.27,\3\ p. 37 \9\
    AA furnace...................  213.2.........................  3113 B [18th, 19th]...........  D3557-95(D)...................  I-4138-89 \51\
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-1472-85 or I-4471-97 \50\
    DCP \36\.....................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Voltametry \11\, or..........  ..............................  ..............................  D3557-95(C)...................
    Colorimetric (Dithizone).....  ..............................  3500-Cd D [18th, 19th]........
13. Calcium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  215.1.........................  3111 B [18th, 19th]...........  D511-93(B)....................  I-3152-85
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP, or......................  ..............................  ..............................  ..............................  ..............................  Note 34.
    Titrimetric (EDTA)...........  215.2.........................  3500-Ca B [20th] and 3500-Ca D  D511-93(A)....................
                                                                    [18th, 19th].
14. Carbonaceous biochemical
 oxygen demand (CBOD 3), mg/
 L\12\:
    Dissolved Oxygen Depletion     ..............................  5210 B [18th, 19th, 20th].....
     with nitrification inhibitor.
15. Chemical oxygen demand (COD),  410.1.........................  5220 C [18th, 19th, 20th].....  D1252-95(A)...................  I-3560-85.....................  973.46,\3\ p. 17 \9\
 mg/L; Titrimetric
    or...........................  410.2.........................  ..............................  ..............................  I-3562-85
                                   410.3.........................
    Spectrophotometric, manual or  410.4.........................  5220 D [18th, 19th, 20th].....  D1252-95(B)...................  I-3561-85.....................  Notes 13, 14.
     automatic.
16. Chloride, mg/L:
    Titrimetric (silver nitrate)   ..............................  4500-Cl-B [18th, 19th, 20th]..  D512-89(B)....................  I-1183-85
     or.
    (Mercuric nitrate)...........  325.3.........................  4500-Cl-C [18th, 19th, 20th]..  D512-89(A)....................  I-1184-85.....................  973.51 \3\
    Colorimetric, manual or......  ..............................  ..............................  ..............................  I-1187-85
    Automated (Ferricyanide).....  325.1 or 325.2................  4500-Cl-E [18th, 19th, 20th]..  ..............................  I-2187-85
17. Chlorine--Total residual, mg/
 L; Titrimetric:
    Amperometric direct..........  330.1.........................  4500-Cl D [18th, 19th, 20th]..  D1253-86(92)..................
    Iodometric direct............  330.3.........................  4500-Cl B [18th, 19th, 20th]..
    Back titration ether end-      330.2.........................  4500-Cl C [18th, 19th, 20th]..
     point \15\ or.
    DPD-FAS......................  330.4.........................  4500-Cl F [18th, 19th, 20th]..
    Spectrophotometric, DPD......  330.5.........................  4500-Cl G [18th, 19th, 20th]..
    Or Electrode.................  ..............................  ..............................  ..............................  ..............................  Note 16.
18. Chromium VI dissolved, mg/L;
 0.45 micron filtration followed
 by:
    AA chelation-extraction or...  218.4.........................  3111 C [18th, 19th]...........  ..............................  I-1232-85
    Colorimetric                   ..............................  3500-Cr B [20th] and 3500-Cr D  D1687-92(A)...................  I-1230-85
     (Diphenylcarbazide).                                           [18th, 19th].
19. Chromium-Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  218.1.........................  3111 B [18th, 19th]...........  D1687-92(B)...................  I-3236-85.....................  974.27 \3\
    AA chelation-extraction......  218.3.........................  3111 C [18th, 19th]...........

[[Page 65230]]

 
    AA furnace...................  218.2.........................  3113 B [18th, 19th]...........  D1687-92(C)...................  I-3233-93 \46\................
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
    DCP \36\ or..................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric                   ..............................  3500-Cr B [20th] and 3500-Cr D
     (Diphenylcarbazide).                                           [18th, 19th].
20. Cobalt--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  219.1.........................  3111 B or C [18th, 19th]......  D3558-94(A or B)..............  I-3239-85.....................  p. 37 \9\
    AA furnace...................  219.2.........................  3113 B [18th, 19th]...........  D3558-94(C)...................  I-4243-89 \51\................
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\................
    DCP..........................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
21. Color platinum cobalt units
 or dominant wavelength, hue,
 luminance purity:
    Colorimetric (ADMI), or......
    (Platinum cobalt), or........  110.1.........................  2120 E [18th, 19th, 20th].....  ..............................  ..............................  Note 18.
    Spectrophotometric...........  110.2.........................  2120 B [18th, 19th, 20th].....  ..............................  I-1250-85
                                   110.3.........................  2120 C [18th, 19th, 20th].....
22. Copper--Total,4 mg/L;
 Digestion 4 followed by:
    AA direct aspiration 36......  220.1.........................  3111 B or C [18th, 19th]......  D1688-95(A or B)..............  I-3270-85 or I-3271-85........  974.27 3 p. 37 9
    AA furnace...................  220.2.........................  3113 B [18th, 19th]...........  D1688-95(C)...................  I-4274-89 51
    ICP/AES 36...................  200.7 5.......................  3120 B [18th, 19th, 20th].....  ..............................  I--4471--97 50
    DCP 36 or....................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric (Neocuproine) or  ..............................  3500-Cu B [20th] and 3500-Cu D
                                                                    [18th, 19th].
    (Bicinchoninate).............  ..............................  3500-Cu C [20th] and 3500-As B  ..............................  ..............................  Note 19.
                                                                    [18th, 19th].
23. Cyanide--Total, mg/L:
    Manual distillation with       ..............................  4500-CN C [18th, 19th, 20th]..  D2036-98(A)
     MgCl2 followed by..
    Titrimetric, or..............  ..............................  4500-CN D [18th, 19th, 20th]..  ..............................  ..............................  p. 22 9
    Spectrophotometric, manual or  335.2 31......................  4500-CN E [18th, 19th, 20th]..  D2036-98(A)...................  I-3300-85
    Automated 20.................  335.3 31......................  ..............................  ..............................  I-4302-85
24. Available Cyanide, mg/L:
    Manual distillation with       335.1.........................  4500-CN G [18th, 19th, 20th]..  D2036-98(B)
     MgCl2 followed by
     titrimetric or
     Spectrophotometric.
    Flow injection and ligand      ..............................  ..............................  ..............................  ..............................  OIA-1677 44
     exchange, followed by
     amperometry.
25. Fluoride--Total, mg/L:
    Manual distillation 6          ..............................  4500-F B [18th, 19th, 20th]...
     followed by.
    Electrode, manual or.........  340.2.........................  4500-F C [18th, 19th, 20th]...  D1179-93(B)
    Automated....................  ..............................  ..............................  ..............................  I-4327-85                       .............................
    Colorimetric (SPADNS)........  340.1.........................  4500-F D [18th, 19th, 20th]...  D1179-93(A)
    Or Automated complexone......  340.3.........................  4500-F E [18th, 19th, 20th]...
26. Gold--Total,4 mg/L; Digestion
 4 followed by:

[[Page 65231]]

 
    AA direct aspiration.........  231.1.........................  3111 B [18th, 19th]...........
    AA furnace, or...............  231.2
    DCP..........................  ..............................  ..............................  ..............................  ..............................  Note 34.
27. Hardness--Total, as CaCO3, mg/
 L:
    Automated colorimetric,......  130.1
    Titrimetric (EDTA), or Ca      130.2.........................  2340 B or C [18th, 19th, 20th]  D1126-86(92)..................  I-1338-85.....................  973.52B 3
     plus Mg as their carbonates,
     by inductively coupled
     plasma or AA direct
     aspiration (See Parameters
     13 and 33).
28. Hydrogen ion (pH), pH units:
    Electrometric measurement, or  150.1.........................  4500-H+ B [18th, 19th, 20th]..  D1293-84 (90)(A or B).........  I-1586-85.....................  973.41 3
    Automated electrode..........  ..............................  ..............................  ..............................  I-2587-85.....................  Note 21.
29. Iridium--Total,4 mg/L;
 Digestion 4 followed by:
    AA direct aspiration or......  235.1.........................  3111 B [18th, 19th]...........
    AA furnace...................  235.2
30. Iron--Total,4 mg/L; Digestion
 4 followed by:
    AA direct aspiration 36......  236.1.........................  3111 B or C [18th, 19th]......  D1068-96(A or B)..............  I-3381-85.....................  974.27 3
    AA furnace...................  236.2.........................  3113 B [18th, 19th]...........  D1068-96(C)
    ICP/AES 36...................  200.7 5.......................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 50
    DCP 36 or....................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric (Phenanthroline)  ..............................  3500-Fe B [20th] and 3500-Fe D  D1068-96(D)...................  ..............................  Note 22.
                                                                    [18th, 19th].
31. Kjeldahl Nitrogen--Total, (as
 N), mg/L:
    Digestion and distillation     351.3.........................  4500-Norg B or C and 4500-NH3   D3590-89(A)
     followed by.                                                   B [18th, 19th, 20th].
    Titration....................  351.3.........................  ..............................  D3590-89(A)...................  ..............................  973.48 \3\
    Nesslerization...............  351.3.........................  4500-NH3 C [18th].............  D3590-89(A)...................
    Electrode....................  351.3.........................  4500-NH3 C [19th, 20th] and
                                                                    4500-NH3 E [18th].
Automated phenate colorimetric...  351.1.........................  ..............................  ..............................  I-4551-78\8\
Semi-automated block digestor      351.2.........................  ..............................  D3590-89(B)...................  I-4515-91 \45\................
 colorimetric.
Manual or block digestor           351.4.........................  ..............................  D3590-89(A)
 potentiometric.
Block digester, followed by Auto   ..............................  ..............................  ..............................  ..............................  Note 39.
 distillation and Titration, or.
Nesslerization, or...............  ..............................  ..............................  ..............................  ..............................  Note 40.
Flow injection gas diffusion.....  ..............................  ..............................  ..............................  ..............................  Note 41.
32. Lead--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  239.1.........................  3111 B or C [18th, 19th]......  D3559-96(A or B)..............  I-3399-85.....................  974.27 \3\
    AA furnace...................  239.2.........................  3113 B [18th, 19th]...........  D3559-96(D)...................  I-4403-89 \51\
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP 36.......................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Voltametry \11\ or...........                                                                  D3559-96(C)...................
    Colorimetric (Dithizone).....                                  3500-Pb B [ 20th] and 3500-Pb
                                                                    D [18th, 19th].
33. Magnesium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  242.1.........................  3111 B [18th, 19th]...........  D511-93(B)....................  I-3447-85.....................  974.27 \3\

[[Page 65232]]

 
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP or.......................  ..............................  ..............................  ..............................  ..............................  Note 34.
    Gravimetric..................  ..............................  3500-Mg D [18th, 19th]........
34. Manganese-Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  243.1.........................  3111 B [18th, 19th]...........  D858-95(A or B)...............  I-3454-85.....................  974.27 \3\
    AA furnace...................  243.2.........................  3113 B [18th, 19th]...........  D858-95(C)
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP \36\, or.................  ..............................  ..............................  D4190-94......................  ..............................  Note 34
    Colorimetric (Persulfate), or  ..............................  3500-Mn B [20th] and 3500-Mn D  ..............................  ..............................  920.203 \3\
                                                                    [18th, 19th].
    (Periodate)..................  ..............................  ..............................  ..............................  ..............................  Note 23.
35. Mercury--Total \4\, mg/L:
    Cold vapor, manual or........  245.1.........................  3112 B [18th, 19th]...........  D3223-91......................  I-3462-85.....................  977.22 \3\
    Automated....................  245.2
    Oxidation, purge and trap,     1631C \43\
     and cold vapor atomic
     fluorescence spectrometry
     (ng/L).
36. Molybdenum--Total \4\, mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  246.1.........................  3111 D [18th, 19th]...........  ..............................  I-3490-85
    AA furnace...................  246.2.........................  3113 B [18th, 19th]...........  ..............................  I-3492-96 \47\
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP..........................  ..............................  ..............................  ..............................  ..............................  Note 34.
37. Nickel--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  249.1.........................  3111 B or C [18th, 19th]......  D1886-90(A or B)..............  I-3499-85.....................
    AA furnace...................  249.2.........................  3113 B [18th, 19th]...........  D1886-90(C)...................  I-4503-89 \51\................
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\................
    DCP \36\, or.................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric (heptoxime).....  ..............................  3500-Ni D [17th]..............
38. Nitrate (as N), mg/L:
    Colorimetric (Brucine          352.1.........................  ..............................  ..............................  ..............................  973.50,\3\ 419D,\17\ p. 28
     sulfate), or Nitrate-nitrite                                                                                                                                   \9\
     N minus Nitrite N (See
     parameters 39 and 40).
39. Nitrate-nitrite (as N),
mg/L:
    Cadmium reduction, Manual or.  353.3.........................  4500-NO3-E [18th, 19th, 20th].  D3867-99(B)...................
    Automated, or................  353.2.........................  4500-NO3-F [18th, 19th, 20th].  D3867-99(A)...................  I-4545-85.....................
    Automated hydrazine..........  353.1.........................  4500-NO3-H [18th, 19th, 20th].
40. Nitrite (as N), mg/L;
 Spectrophotometric:
    Manual or....................  354.1.........................  4500-NO2-B [18th, 19th, 20th].  ..............................  ..............................  Note 25.
    Automated (Diazotization)....  ..............................  ..............................  ..............................  I-4540-85.....................
41. Oil and grease--Total
 recoverable, mg/L:
    Gravimetric (extraction).....  413.1.........................  5520B [18th, 19th, 20th] \38\.

[[Page 65233]]

 
    Oil and grease and non-polar   1664A \42\....................  5520B [18th, 19th, 20th] \38\.
     material, mg/L: Hexane
     extractable material (HEM):
     n-Hexane extraction and
     gravimetry.
    Silica gel treated HEM (SGT-   1664A \42\....................
     HEM): Silica gel treatment
     and gravimetry.
42. Organic carbon--Total (TOC),
 mg/L:
    Combustion or oxidation......  415.1.........................  5310 B, C, or D [18th, 19th,    D2579-93 (A or B).............  ..............................  973.47,\3\ p. 14 \24\
                                                                    20th].
43. Organic nitrogen (as N), mg/
 L:
    Total Kjeldahl N (Parameter
     31) minus ammonia N
     (Parameter 4).
44. Orthophosphate (as P), mg/L;
 Ascorbic acid method:
    Automated, or................  365.1.........................  4500-P F [18th, 19th, 20th]...  ..............................  I-4601-85.....................  973.56 \3\
    Manual single reagent........  365.2.........................  4500-P E [18th, 19th, 20th]...  D515-88(A)....................  ..............................  973.55 \3\
    Manual two reagent...........  365.3.........................
45. Osmium--Total \4\, mg/L;
 Digestion \4\ followed by:
    AA direct aspiration, or.....  252.1.........................  3111 D [18th, 19th]...........
    AA furnace...................  252.2.........................
46. Oxygen, dissolved, mg/L:
    Winkler (Azide modification),  360.2.........................  4500-O C [18th, 19th, 20th]...  D888-92(A)....................  I-1575-78 \8\.................  973.45B \3\
     or.
    Electrode....................  360.1.........................  4500-O G [18th, 19th, 20th]...  D888-92(B)....................  I-1576-78 \8\.................
47. Palladium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration, or.....  253.1.........................  3111 B [18th, 19th]...........  ..............................  ..............................  p. S27 \10\
    AA furnace...................  253.2.........................  ..............................  ..............................  ..............................  p. S28 \10\
    DCP..........................  ..............................  ..............................  ..............................  ..............................  Note 34.
48. Phenols, mg/L:
    Manual distillation \26\.....  420.1.........................  ..............................  ..............................  ..............................  Note 27.
    Followed by:.................
        Colorimetric (4AAP)        420.1.........................  ..............................  ..............................  ..............................  Note 27.
         manual, or.
        Automated \19\...........  420.2.........................
49. Phosphorus (elemental), mg/L:
    Gas-liquid chromatography....  ..............................  ..............................  ..............................  ..............................  Note 28.
50. Phosphorus--Total, mg/L:
    Persulfate digestion followed  365.2.........................  4500-P B, 5 [18th, 19th, 20th]  ..............................  ..............................  973.55 \3\
     by.
    Manual or....................  365.2 or 365.3................  4500-P E [18th, 19th, 20th]...  D515-88(A)
    Automated ascorbic acid        365.1.........................  4500-P F [18th, 19th, 20th]...  ..............................  I-4600-85.....................  973.56 \3\
     reduction.
    Semi-automated block digestor  365.4.........................  ..............................  D515-88(B)....................  I-4610-91 \48\................
51. Platinum--Total,\4\ mg/L:
 Digestion \4\ followed by:
    AA direct aspiration.........  255.1.........................  3111 B [18th, 19th]...........
    AA furnace...................  255.2.........................

[[Page 65234]]

 
    DCP..........................  ..............................  ..............................  ..............................  ..............................  Note 34
52. Potassium--Total,\4\ mg/L:
 Digestion \4\ followed by:
    AA direct aspiration.........  258.1.........................  3111 B [18th, 19th]...........  ..............................  I-3630-85.....................  973.53 \3\
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
    Flame photometric, or........  ..............................  3500-K B [20th] and 3500-K D
                                                                    [18th, 19th].
    Colorimetric.................  ..............................  ..............................  ..............................  ..............................  317 B \17\
53. Residue--Total, mg/L:
    Gravimetric, 103-105[deg]....  160.3.........................  2540 B [18th, 19th, 20th].....  ..............................  I-3750-85.....................
54. Residue--filterable, mg/L:
    Gravimetric, 180[deg]........  160.1.........................  2540 C [18th, 19th, 20th].....  ..............................  I-1750-85.....................
55. Residue--nonfilterable (TSS),
 mg/L:
    Gravimetric, 103-105[deg]      160.2.........................  2540 D [18th, 19th, 20th].....  ..............................  I-3765-85.....................
     post washing of residue.
56. Residue--settleable, mg/L:
    Volumetric, (Imhoff cone), or  160.5.........................  2540 F [18th, 19th, 20th].....
     gravimetric.
57. Residue--Volatile, mg/L:
    Gravimetric, 550[deg]........  160.4.........................  ..............................  ..............................  I-3753-85.....................
58. Rhodium-Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration, or.....  265.1.........................  3111 B [18th, 19th]...........
    AA furnace...................  265.2.........................
59. Ruthenium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration, or.....  267.1.........................  3111 B [18th, 19th]...........
    AA furnace...................  267.2.........................
60. Selenium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA furnace...................  270.2.........................  3113 B [18th, 19th]...........  D3859-98(B)...................  I-4668-98 \49\................
    ICP/AES,\36\ or..............  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
    AA gaseous hydride...........  ..............................  3114 B [18th, 19th]...........  D3859-98(A)...................  I-3667-85.....................
61. Silica \37\--Dissolved, mg/L;
 0.45 micron filtration followed
 by:
    Colorimetric, Manual or......  370.1.........................  4500-SiO2 C [20th] and 4500-Si  D859-94.......................  I-1700-85.....................
                                                                    D [18th, 19th].
    Automated (Molybdosilicate),   ..............................  ..............................  ..............................  I-2700-85.....................
     or.
    ICP..........................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\................
62. Silver--Total,\4\ mg/L:
 Digestion 4 29 followed by:
    AA direct aspiration.........  272.1.........................  3111 B or C [18th, 19th]......  ..............................  I-3720-85.....................  974.27,\3\ p. 37 \9\
    AA furnace...................  272.2.........................  3113 B [18th, 19th]...........  ..............................  I-4724-89 \51\
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP..........................  ..............................  ..............................  ..............................  ..............................  Note 34.
63. Sodium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  273.1.........................  3111 B [18th, 19th]...........  ..............................  I-3735-85.....................  973.54 \3\
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\
    DCP, or......................  ..............................  ..............................  ..............................  ..............................  Note 34.
    Flame photometric............  ..............................  3500 Na B [20th] and 3500 Na D
                                                                    [18th, 19th].

[[Page 65235]]

 
64. Specific conductance,
 micromhos/cm at 25 [deg]C:
    Wheatstone bridge............  120.1.........................  2510 B [18th, 19th, 20th].....  D1125-95(A)...................  I-2781-85.....................  973.40 \3\
65. Sulfate (as SO4), mg/L:
    Automated colorimetric         375.1.........................
     (barium chloranilate).
    Gravimetric..................  375.3.........................  4500-SO4-\2\C or D [18th,       ..............................  ..............................  925.54 \3\
                                                                    19th, 20th].
    Turbidimetric................  375.4.........................  ..............................  D516-90.......................  ..............................  426C \30\
66. Sulfide (as S), mg/L:
    Titrimetric (iodine), or.....  376.1.........................  4500-S-\2\F [19th, 20th] or     ..............................  I-3840-85.....................
                                                                    4500-S-\2\E [18th].
    Colorimetric (methylene blue)  376.2.........................  4500-S-\2\D [18th, 19th, 20th]
67. Sulfite (as SO3), mg/L:
    Titrimetric (iodine-iodate)..  377.1.........................  4500-SO3-\2\B [18th, 19th,
                                                                    20th].
68. Surfactants, mg/L:
    Colorimetric (methylene blue)  425.1.........................  5540 C [18th, 19th, 20th].....  D2330-88......................
69. Temperature, [deg]C:
    Thermometric.................  170.1.........................  2550 B [18th, 19th, 20th].....  ..............................  ..............................  Note 32.
70. Thallium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  279.1.........................  3111 B [18th, 19th]...........
    AA furnace...................  279.2.........................
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....
71. Tin--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  282.1.........................  3111 B [18th, 19th]...........  ..............................  I-3850-78 \8\.................
    AA furnace, or...............  282.2.........................  3113 B [18th, 19th]...........
    ICP/AES......................  200.7 \5\.....................
72. Titanium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  283.1.........................  3111 D [18th, 19th]...........
    AA furnace...................  283.2.........................
    DCP..........................  ..............................  ..............................  ..............................  ..............................  Note 34.
73. Turbidity, NTU:
    Nephelometric................  180.1.........................  2130 B [18th, 19th, 20th].....  D1889-94(A)...................  I-3860-85.....................
74. Vanadium--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration.........  286.1.........................  3111 D [18th, 19th]...........
    AA furnace...................  286.2.........................  ..............................  D3373-93......................
    ICP/AES......................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\................
    DCP, or......................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric (Gallic Acid)...  ..............................  3500-V B [20th] and 3500-V D
                                                                    [18th, 19th].
75. Zinc--Total,\4\ mg/L;
 Digestion \4\ followed by:
    AA direct aspiration \36\....  289.1.........................  3111 B or C [18th, 19th]......  D1691-95(A or B)..............  I-3900-85.....................  974.27,\3\ p. 37 \9\
    AA furnace...................  289.2.........................
    ICP/AES \36\.................  200.7 \5\.....................  3120 B [18th, 19th, 20th].....  ..............................  I-4471-97 \50\................
    DCP,\36\ or..................  ..............................  ..............................  D4190-94......................  ..............................  Note 34.
    Colorimetric (Dithizone) or..  ..............................  3500-Zn E [18th, 19th]........
    (Zincon).....................  ..............................  3500-Zn B [20th] and 3500-Zn F  ..............................  ..............................  Note 33.
                                                                    [18th, 19th].
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Table 1B Notes:

[[Page 65236]]

 
\1\ ``Methods for Chemical Analysis of Water and Wastes,'' Environmental Protection Agency, Environmental Monitoring Systems Laboratory--Cincinnati (EMSL-CI), EPA-600/4-79-020, Revised March
  1983 and 1979 where applicable.
\2\ Fishman, M.J., et al. ``Methods for Analysis of Inorganic Substances in Water and Fluvial Sediments, ''U.S. Department of the Interior, Techniques of Water-Resource Investigations of the
  U.S. Geological Survey, Denver, CO, Revised 1989, unless otherwise stated.
\3\ ``Official Methods of Analysis of the Association of Official Analytical Chemists,'' methods manual, 15th ed. (1990).
\4\ For the determination of total metals the sample is not filtered before processing. A digestion procedure is required to solubilize suspended material and to destroy possible organic-metal
  complexes. Two digestion procedures are given in ``Methods for Chemical Analysis of Water and Wastes, 1979 and 1983''. One (Section 4.1.3), is a vigorous digestion using nitric acid. A less
  vigorous digestion using nitric and hydrochloric acids (Section 4.1.4) is preferred; however, the analyst should be cautioned that this mild digestion may not suffice for all samples types.
  Particularly, if a colorimetric procedure is to be employed, it is necessary to ensure that all organo-metallic bonds be broken so that the metal is in a reactive state. In those situations,
  the vigorous digestion is to be preferred making certain that at no time does the sample go to dryness. Samples containing large amounts of organic materials may also benefit by this
  vigorous digestion, however, vigorous digestion with concentrated nitric acid will convert antimony and tin to insoluble oxides and render them unavailable for analysis. Use of ICP/AES as
  well as determinations for certain elements such as antimony, arsenic, the noble metals, mercury, selenium, silver, tin, and titanium require a modified sample digestion procedure and in all
  cases the method write-up should be consulted for specific instructions and/or cautions.
Note to Table 1B Note 4: If the digestion procedure for direct aspiration AA included in one of the other approved references is different than the above, the EPA procedure must be used.
  Dissolved metals are defined as those constituents which will pass through a 0.45 micron membrane filter. Following filtration of the sample, the referenced procedure for total metals must
  be followed. Sample digestion of the filtrate for dissolved metals (or digestion of the original sample solution for total metals) may be omitted for AA (direct aspiration or graphite
  furnace) and ICP analyses, provided the sample solution to be analyzed meets the following criteria:
a. has a low COD (<20)
b. is visibly transparent with a turbidity measurement of 1 NTU or less
c. is colorless with no perceptible odor, and
d. is of one liquid phase and free of particulate or suspended matter following acidification.
\5\ The full text of Method 200.7, ``Inductively Coupled Plasma Atomic Emission Spectrometric Method for Trace Element Analysis of Water and Wastes,'' is given at Appendix C of this Part 136.
\6\ Manual distillation is not required if comparability data on representative effluent samples are on company file to show that this preliminary distillation step is not necessary: however,
  manual distillation will be required to resolve any controversies.
\7\ Ammonia, Automated Electrode Method, Industrial Method Number 379-75 WE, dated February 19, 1976, Bran & Luebbe (Technicon) Auto Analyzer II, Bran & Luebbe Analyzing Technologies, Inc.,
  Elmsford, NY 10523.
\8\ The approved method is that cited in ``Methods for Determination of Inorganic Substances in Water and Fluvial Sediments'', USGS TWRI, Book 5, Chapter A1 (1979).
\9\ American National Standard on Photographic Processing Effluents, Apr. 2, 1975. Available from ANSI, 25 West 43rd Street, New York, NY 10036.
\10\ ``Selected Analytical Methods Approved and Cited by the United States Environmental Protection Agency'', Supplement to the Fifteenth Edition of Standard Methods for the Examination of
  Water and Wastewater (1981).
\11\ The use of normal and differential pulse voltage ramps to increase sensitivity and resolution is acceptable.
\12\ Carbonaceous biochemical oxygen demand (CBOD5) must not be confused with the traditional BOD5 test method which measures ``total BOD''. The addition of the nitrification inhibitor is not
  a procedural option, but must be included to report the CBOD5 parameter. A discharger whose permit requires reporting the traditional BOD5 may not use a nitrification inhibitor in the
  procedure for reporting the results. Only when a discharger's permit specifically states CBOD5 is required can the permittee report data using a nitrification inhibitor.
\13\ OIC Chemical Oxygen Demand Method, Oceanography International Corporation, 1978, 512 West Loop, PO Box 2980, College Station, TX 77840.
\14\ Chemical Oxygen Demand, Method 8000, Hach Handbook of Water Analysis, 1979, Hach Chemical Company, PO Box 389, Loveland, CO 80537.
\15\ The back titration method will be used to resolve controversy.
\16\ Orion Research Instruction Manual, Residual Chlorine Electrode Model 97-70, 1977, Orion Research Incorporated, 840 Memorial Drive, Cambridge, MA 02138. The calibration graph for the Orion
  residual chlorine method must be derived using a reagent blank and three standard solutions, containing 0.2, 1.0, and 5.0 mL 0.00281 N potassium iodate/100 mL solution, respectively.
\17\ The approved method is that cited in Standard Methods for the Examination of Water and Wastewater, 14th Edition, 1976.
\18\ National Council of the Paper Industry for Air and Stream Improvement, Inc. Technical Bulletin 253, December 1971.
\19\ Copper, Biocinchoinate Method, Method 8506, Hach Handbook of Water Analysis, 1979, Hach Chemical Company, PO Box 389, Loveland, CO 80537.
\20\ After the manual distillation is completed, the autoanalyzer manifolds in EPA Methods 335.3 (cyanide) or 420.2 (phenols) are simplified by connecting the re-sample line directly to the
  sampler. When using the manifold setup shown in Method 335.3, the buffer 6.2 should be replaced with the buffer 7.6 found in Method 335.2.
\21\ Hydrogen ion (pH) Automated Electrode Method, Industrial Method Number 378-75WA, October 1976, Bran & Luebbe (Technicon) Autoanalyzer II. Bran & Luebbe Analyzing Technologies, Inc.,
  Elmsford, NY 10523.
\22\ Iron, 1,10-Phenanthroline Method, Method 8008, 1980, Hach Chemical Company, PO Box 389, Loveland, CO 80537.
\23\ Manganese, Periodate Oxidation Method, Method 8034, Hach Handbook of Wastewater Analysis, 1979, pages 2-113 and 2-117, Hach Chemical Company, Loveland, CO 80537.
\24\ Wershaw, R.L., et al, ``Methods for Analysis of Organic Substances in Water,'' Techniques of Water-Resources Investigation of the U.S. Geological Survey, Book 5, Chapter A3, (1972 Revised
  1987) p. 14.
\25\ Nitrogen, Nitrite, Method 8507, Hach Chemical Company, PO Box 389, Loveland, CO 80537.
\26\ Just prior to distillation, adjust the sulfuric-acid-preserved sample to pH 4 with 1 + 9 NaOH.
\27\ The approved method is cited in Standard Methods for the Examination of Water and Wastewater, 14th Edition. The colorimetric reaction is conducted at a pH of 10.0+/-0.2. The approved
  methods are given on pp 576-81 of the 14th Edition: Method 510A for distillation, Method 510B for the manual colorimetric procedure, or Method 510C for the manual spectrometric procedure.
\28\ R.F. Addison and R.G. Ackman, ``Direct Determination of Elemental Phosphorus by Gas-Liquid Chromatography,'' Journal of Chromatography, Vol. 47, No. 3, pp. 421-426, 1970.
\29\ Approved methods for the analysis of silver in industrial wastewaters at concentrations of 1 mg/L and above are inadequate where silver exists as an inorganic halide. Silver halides such
  as the bromide and chloride are relatively insoluble in reagents such as nitric acid but are readily soluble in an aqueous buffer of sodium thiosulfate and sodium hydroxide to pH of 12.
  Therefore, for levels of silver above 1 mg/L, 20 mL of sample should be diluted to 100 mL by adding 40 mL each of 2 M Na2S2O3 and NaOH. Standards should be prepared in the same manner. For
  levels of silver below 1 mg/L the approved method is satisfactory.
\30\ The approved method is that cited in Standard Methods for the Examination of Water and Wastewater, 15th Edition.
\31\ EPA Methods 335.2 and 335.3 require the NaOH absorber solution final concentration to be adjusted to 0.25 N before colorimetric determination of total cyanide.
\32\ Stevens, H.H., Ficke, J.F., and Smoot, G.F., ``Water Temperature--Influential Factors, Field Measurement and Data Presentation,'' Techniques of Water-Resources Investigations of the U.S.
  Geological Survey, Book 1, Chapter D1, 1975.
\33\ Zinc, Zincon Method, Method 8009, Hach Handbook of Water Analysis, 1979, pages 2-231 and 2-333, Hach Chemical Company, Loveland, CO 80537.
\34\ ``Direct Current Plasma (DCP) Optical Emission Spectrometric Method for Trace Elemental Analysis of Water and Wastes, Method AES0029,'' 1986--Revised 1991, Thermo Jarrell Ash Corporation,
  27 Forge Parkway, Franklin, MA 02038.
\35\ Precision and recovery statements for the atomic absorption direct aspiration and graphite furnace methods, and for the spectrophotometric SDDC method for arsenic are provided in Appendix
  D of this part titled, ``Precision and Recovery Statements for Methods for Measuring Metals''.

[[Page 65237]]

 
\36\ ``Closed Vessel Microwave Digestion of Wastewater Samples for Determination of Metals'', CEM Corporation, PO Box 200, Matthews, NC 28106-0200, April 16, 1992. Available from the CEM
  Corporation.
\37\ When determining boron and silica, only plastic, PTFE, or quartz laboratory ware may be used from start until completion of analysis.
\38\ Only use Trichlorotrifluorethane (1,1,2-trichloro-1,2,2-trifluoroethane; CFC-113) extraction solvent when determining Total Recoverable Oil and Grease (analogous to EPA Method 413.1).
  Only use n-hexane extraction solvent when determining Hexane Extractable Material (analogous to EPA Method 1664A). Use of other extraction solvents is strictly prohibited.
\39\ Nitrogen, Total Kjeldahl, Method PAI-DK01 (Block Digestion, Steam Distillation, Titrimetric Detection), revised 12/22/94, OI Analytical/ALPKEM, PO Box 9010, College Station, TX 77842.
\40\ Nitrogen, Total Kjeldahl, Method PAI-DK02 (Block Digestion, Steam Distillation, Colorimetric Detection), revised 12/22/94, OI Analytical/ALPKEM, PO Box 9010, College Station, TX 77842.
\41\ Nitrogen, Total Kjeldahl, Method PAI-DK03 (Block Digestion, Automated FIA Gas Diffusion), revised 12/22/94, OI Analytical/ALPKEM, PO Box 9010, College Station, TX 77842.
\42\ Method 1664, Revision A ``n-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel Treated n-Hexane Extractable Material (SGT-HEM; Non-polar Material) by Extraction and
  Gravimetry'' EPA-821-R-98-002, February 1999. Available at NTIS, PB-121949, U.S. Department of Commerce, 5285 Port Royal, Springfield, Virginia 22161.
\43\ USEPA. 2001. Method 1631, Revision C, ``Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry.'' March 2001. Office of Water, U.S. Environmental
  Protection Agency (EPA-821-R-01-024). The application of clean techniques described in EPA's draft Method 1669: Sampling Ambient Water for Trace Metals at EPA Water Quality Criteria Levels
  (EPA-821-R-96-011) are recommended to preclude contamination at low-level, trace metal determinations.
\44\ Available Cyanide, Method OIA-1677 (Available Cyanide by Flow Injection, Ligand Exchange, and Amperometry), ALPKEM, A Division of OI Analytical, PO Box 9010, College Station, TX 77842-
  9010.
\45\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Ammonia Plus Organic Nitrogen by a Kjeldahl Digestion Method'', Open File Report
  (OFR) 00-170.
\46\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Chromium in Water by Graphite Furnace Atomic Absorption Spectrophotometry'', Open
  File Report (OFR) 93-449.
\47\ ''Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Molybdenum by Graphite Furnace Atomic Absorption Spectrophotometry'', Open File
  Report (OFR) 97-198.
\48\ ''Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Total Phosphorus by Kjeldahl Digestion Method and an Automated Colorimetric Finish
  That Includes Dialysis'' Open File Report (OFR) 92-146.
\49\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Arsenic and Selenium in Water and Sediment by Graphite Furnace-Atomic Absorption
  Spectrometry'' Open File Report (OFR) 98-639.
\50\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Elements in Whole-water Digests Using Inductively Coupled Plasma-Optical Emission
  Spectrometry and Inductively Coupled Plasma-Mass Spectrometry'', Open File Report (OFR) 98-165.
\51\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Inorganic and Organic Constituents in Water and Fluvial Sediment'', Open File
  Report (OFR) 93-125.


                                     Table 1C.--List of Approved Test Procedures for Non-Pesticide Organic Compounds
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                     EPA method number 2, 7                                      Other approved methods
                                ------------------------------------------------------------------------------------------------------------------------
         Parameter \1\                                                                           Standard Methods
                                          GC                 GC/MS                 HPLC            [Edition(s)]            ASTM              Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Acenaphthene................  610................  625, 1625B.........  610................  6440 B [18th,       D4657-92.........  Note 9, p.27.
                                                                                                 19th, 20th].
2. Acenaphthylene..............  610................  625, 1625B.........  610................  6440 B, 6410 B      D4657-92.........  Note 9, p.27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
3. Acrolein....................  603................  624\4\, 1624B......                                                              .................
4. Acrylonitrile...............  603................  624\4\, 1624B......                                                              .................
5. Anthracene..................  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
6. Benzene.....................  602................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6220 B
                                                                                                 [18th, 19th].
7. Benzidine...................  ...................  625\5\, 1625B......  605................  ..................  .................  Note 3, p.1.
8. Benzo(a)anthracene..........  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
9. Benzo(a)pyrene..............  610,...............  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
10. Benzo(b)fluoranthene.......  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
11. Benzo(g, h, i)perylene.....  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
12. Benzo(k)fluoranthene.......  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
13. Benzyl chloride............  ...................  ...................  ...................  ..................  .................  Note 3, p 130:
                                                                                                                                        Note 6, p. S102.

[[Page 65238]]

 
14. Benzyl butyl phthalate.....  606................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
15. Bis(2-chloroethoxy) methane  611................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
16. Bis(2-chloroethyl) ether...  611................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
17. Bis(2-ethylhexyl) phthalate  606................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
18. Bromodichloromethane.......  601................  624, 1624B.........  ...................  6200 C [20th] and
                                                                                                 6230 B [18th,
                                                                                                 19th], 6200 B
                                                                                                 [20th] and 6210 B
                                                                                                 [18th, 19th].
19. Bromoform..................  601................  624, 1624B.........  ...................  6200 C [20th] and
                                                                                                 6230 B [18th,
                                                                                                 19th], 6200 B
                                                                                                 [20th] and 6210 B
                                                                                                 [18th, 19th].
20. Bromomethane...............  601................  624, 1624B.........  ...................  6200 C [20th] and
                                                                                                 6230 B [18th,
                                                                                                 19th], 6200 B
                                                                                                 [20th] and 6210 B
                                                                                                 [18th, 19th].
21. 4-Bromophenylphenyl ether..  611................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
22. Carbon tetrachloride.......  601................  624, 1624B.........  ...................  6200 C [20th] and   .................  Note 3, p. 130.
                                                                                                 6230 B [18th,
                                                                                                 19th].
23. 4-Chloro-3-methylphenol....  604................  625,1625B..........  ...................  6410 B, 6420 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
24. Chlorobenzene..............  601, 602...........  624, 1624B.........  ...................  6200 B [20th] and   .................  Note 3, p. 130.
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6220 B
                                                                                                 [18th, 19th],
                                                                                                 6200 C [20th] and
                                                                                                 6230 B [18th,
                                                                                                 19th],.
25. Chloroethane...............  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
26. 2-Chloroethylvinyl ether...  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
27. Chloroform:................  601................  624, 1624B.........  ...................  6200 B [20th] and   .................  Note 3, p 130.
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
28. Chloromethane..............  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th] 6200C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
29. 2-Chloronaphthalene........  612................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].

[[Page 65239]]

 
30. 2-Chlorophenol.............  604................  625, 1625B.........  ...................  6410 B, 6420 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
31. 4-Chlorophenylphenyl ether.  611................  625, 1625B.........  ...................  6410 B, [18th,      .................  Note 9, p. 27.
                                                                                                 19th, 20th].
32. Chrysene...................  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
33. Dibenzo(a,h)anthracene.....  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
34. Dibromochloromethane.......  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th] 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
35. 1,2-Dichlorobenzene........  601, 602, 612......  624, 625, 1625B....  ...................  6200 C [20th] and   .................  Note 9, p 27.
                                                                                                 6220 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th],
                                                                                                 6410 B [18th,
                                                                                                 19th, 20th].
36. 1,3-Dichlorobenzene........  601, 602, 612......  624, 625, 1625B....  ...................  6200 C [20th] and   .................  Note 9, p. 27.
                                                                                                 6220 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th],
                                                                                                 6410 B [18th,
                                                                                                 19th, 20th].
37. 1,4-Dichlorobenzene........  601, 602, 612......  624, 625, 1625B....  ...................   6200 C [20th] and  .................  Note 9, p. 27.
                                                                                                 6220 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th],
                                                                                                 6410 B [18th,
                                                                                                 19th, 20th].
38. 3,3-Dichlorobenzidine......  ...................  625, 1625B.........  605................  6410 B [18th,                          .................
                                                                                                 19th, 20th].
39. Dichlorodifluoromethane....  601................  ...................  ...................  6200 C [20th] and                      .................
                                                                                                 6230 B [18th,
                                                                                                 19th].
40. 1,1-Dichloroethane.........  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
41. 1,2-Dichloroethane.........  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
42. 1,1-Dichloroethene.........  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].

[[Page 65240]]

 
43. trans-1,2-Dichloroethene...  601................  624, 1624B.........  ...................  6200 B [20th] and                      .................
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
44. 2,4-Dichlorophenol.........  604................  625, 1625B.........  ...................  6410 B, 6420 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
45. 1,2-Dichloropropane........  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
46. cis-1,3-Dichloropropene....  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
47. trans-1,3-Dichloropropene..  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
48. Diethyl phthalate..........  606................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
49. 2,4-Dimethylphenol.........  604................  625, 1625B.........  ...................  6410 B, 6420 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
50. Dimethyl phthalate.........  606................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
51. Di-n-butyl phthalate.......  606................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
52. Di-n-octyl phthalate.......  606................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
53. 2,3-Dinitrophenol..........  604................  625, 1625B.........  ...................  6410 B, 6420 B
                                                                                                 [18th, 19th,
                                                                                                 20th].
54. 2,4-Dinitrotoluene.........  609................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
55. 2,6-Dinitrotoluene.........  609................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
56. Epichlorohydrin............  ...................  ...................  ...................  ..................  .................  Note 3, p. 130;
                                                                                                                                        Note 6, p. S102.
57. Ethylbenzene...............  602................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6220 B
                                                                                                 [18th, 19th].
58. Fluoranthene...............  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
59. Fluorene...................  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
60. 1,2,3,4,6,7,8-Heptachloro-   ...................  1613B
 dibenzofuran.
61. 1,2,3,4,7,8,9-Heptachloro-   ...................  1613B                                                                            .................
 dibenzofuran.
62. 1,2,3,4,6,7,8-Heptachloro-   ...................  1613B                                                                            .................
 dibenzo-p-dioxin.
63. Hexachlorobenzene..........  612................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].

[[Page 65241]]

 
64. Hexachlorobutadiene........  612................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
65. Hexachlorocyclopentadiene..  612................   \5\625, 1625B.....  ...................  6410 [18th, 19th,   .................  Note 9, p. 27.
                                                                                                 20th].
66. 1,2,3,4,7,8-Hexachloro-      ...................  1613B..............
 dibenzofuran.
67. 1,2,3,6,7,8-Hexachloro-      ...................  1613B..............
 dibenzofuran.
68. 1,2,3,7,8,9-Hexachloro-      ...................  1613B..............
 dibenzofuran.
69. 2,3,4,6,7,8-Hexachloro-      ...................  1613B..............
 dibenzofuran.
70. 1,2,3,4,7,8-Hexachloro-      ...................  1613B..............
 dibenzo-p-dioxin.
71. 1,2,3,6,7,8-Hexachloro-      ...................  1613B..............
 dibenzo-p-dioxin.
72. 1,2,3,7,8,9-Hexachloro-      ...................  1613B..............
 dibenzo-p-dioxin.
73. Hexachloroethane...........  616................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
74. Ideno(1,2,3-cd) pyrene.....  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
75. Isophorone.................  609................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27.
                                                                                                 19th, 20th].
76. Methylene chloride.........  601................  624, 1624B.........  ...................  6200 C [20th] and   .................  Note 3, p. 130.
                                                                                                 6230 B [18th,
                                                                                                 19th].
77. 2-Methyl-4,6-dinitrophenol.  604................  625, 1625B.........  ...................  6420 B, 6410 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
78. Naphthalene................  610................  625, 1625B.........  610................  6440 B, 6410 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].
79. Nitrobenzene...............  609................  625, 1625B.........  ...................  6410 B [18th,       D4657-92.........  Note 9, p. 27.
                                                                                                 19th, 20th].
80. 2-Nitrophenol..............  604................  625, 1625B.........  ...................  6410 B, 6420 B      .................  Note 9, p. 27
                                                                                                 [18th, 19th,
                                                                                                 20th].
81. 4-Nitrophenol..............  604................  625, 1625B.........  ...................  6410 B, 6420 B      .................  Note 9, p. 27
                                                                                                 [18th, 19th,
                                                                                                 20th].
82. N-Nitrosodimethylamine.....  607................  625\5\, 1625B......  ...................  6410 B [18th,       .................  Note 9, p. 27
                                                                                                 19th, 20th].
83. N-Nitrosodi-n-propylamine..  607................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 9, p. 27
                                                                                                 19th, 20th].
84. N-Nitrosodiphenylamine.....  607................  625\5\, 1625B......  ...................  6410 B [18th,       .................  Note 9, p. 27
                                                                                                 19th, 20th].
85. Octachlorodibenzofuran.....  ...................  1613B..............
86. Octachlorodibenzo-p-dioxin.  ...................  1613B..............
87. 2,2'-Oxybis(2-               611................  625, 1625B.........  ...................  6410 B [18th,
 chloropropane) [also known as                                                                   19th, 20th].
 bis(2-chloroisopropyl) ether].
88. PCB-1016...................  608................  625................  ...................  6410 B [18th,       .................  Note 3, p. 43
                                                                                                 19th, 20th].
89. PCB-1221...................  608................  625................  ...................  6410 B [18th,       .................  Note 3, p. 43
                                                                                                 19th, 20th].
90. PCB-1232...................  608................  625................  ...................  6410 B [18th,       .................  Note 3, p. 43
                                                                                                 19th, 20th].
91. PCB-1242...................  608................  625................  ...................  6410 B [18th,       .................  Note 3, p. 43
                                                                                                 19th, 20th].
92. PCB-1248...................  608................  625................
93. PCB-1254...................  608................  625................  ...................  6410 B [18th,       .................  Note 3, p. 43
                                                                                                 19th, 20th].
94. PCB-1260...................  608................  625................  ...................  6410 B, 6630 B      .................  Note 3, p. 43
                                                                                                 [18th, 19th,
                                                                                                 20th].
95. 1,2,3,7,8-Pentachloro-       ...................  1613B..............
 dibenzofuran.

[[Page 65242]]

 
96. 2,3,4,7,8-Pentachloro-       ...................  1613B..............
 dibenzofuran.
97. 1,2,3,7,8,-                  ...................  1613B..............
 Pentachlorodibenzo-p-dioxin.
98. Pentachlorophenol..........  604................  625, 1625B.........  ...................  6410 B, 6630 B      .................  Note 3, p. 140;
                                                                                                 [18th, 19th,                           Note 9, p. 27
                                                                                                 20th].
99. Phenanthrene...............  610................  625, 1625B.........  610................  6410 B, 6440 B      D4657-92.........  Note 9, p. 27
                                                                                                 [18th, 19th,
                                                                                                 20th].
100. Phenol....................  604................  625, 1625B.........  ...................  6420 B, 6410 B      .................  Note 9, p. 27
                                                                                                 [18th, 19th,
                                                                                                 20th].
101. Pyrene....................  610................  625, 1625B.........  610................  6440 B, 6410 B       D4675-92........  Note 9, p. 27
                                                                                                 D4675-92 [18th,
                                                                                                 19th, 20th].
102. 2,3,7,8-Tetrachloro-        ...................  1613B..............
 dibenzofuran.
103. 2,3,7,8-Tetrachlorodibenzo- ...................  613, 1613B.........
 p-dioxin.
104. 1,1,2,2-Tetrachloroethane.  601................  624, 1624B.........  ...................  6200 B [20th] and   .................  Note 3, p. 130
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
105. Tetrachloroethene.........  601................  624, 1624B.........  ...................  6200 B [20th] and   .................  Note 3, p. 130
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
106. Toluene...................  602................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6220 B
                                                                                                 [18th, 19th].
107. 1,2,4-Trichlorobenzene....  612................  625, 1625B.........  ...................  6410 B [18th,       .................  Note 3, p. 130;
                                                                                                 19th, 20th].                           Note 9, p. 27.
108. 1,1,1-Trichloroethane.....  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
109. 1,1,2-Trichloroethane.....  601................  624, 1624B.........  ...................  6200 B [20th] and   .................  Note 3, p. 130
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
110. Trichloroethene...........  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
111. Trichlorofluoromethane....  601................  624................  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
112. 2,4,6-Trichlorophenol.....  604................  625, 1625B.........  ...................  6420 B, 6410 B      .................  Note 9, p. 27.
                                                                                                 [18th, 19th,
                                                                                                 20th].

[[Page 65243]]

 
113. Vinyl chloride............  601................  624, 1624B.........  ...................  6200 B [20th] and
                                                                                                 6210 B [18th,
                                                                                                 19th], 6200 C
                                                                                                 [20th] and 6230 B
                                                                                                 [18th, 19th].
--------------------------------------------------------------------------------------------------------------------------------------------------------
 Table IC notes:
\1\ All parameters are expressed in micrograms per liter ([mu]g/L) except for Method 1613B in which the parameters are expressed in picograms per liter
  (pg/L).
\2\ The full text of Methods 601-613, 624, 625, 1624B, and 1625B, are given at Appendix A, ``Test Procedures for Analysis of Organic Pollutants,'' of
  this Part 136. The full text of Method 1613B is incorporated by reference into this Part 136 and is available from the National Technical Information
  Services as stock number PB95-104774. The standardized test procedure to be used to determine the method detection limit (MDL) for these test
  procedures is given at Appendix B, ``Definition and Procedure for the Determination of the Method Detection Limit,'' of this Part 136.
\3\ ``Methods for Benzidine: Chlorinated Organic Compounds, Pentachlorophenol and Pesticides in Water and Wastewater,'' U.S. Environmental Protection
  Agency, September, 1978.
\4\ Method 624 may be extended to screen samples for Acrolein and Acrylonitrile. However, when they are known to be present, the preferred method for
  these two compounds is Method 603 or Method 1624B.
\5\ Method 625 may be extended to include benzidine, hexachlorocyclopentadiene, N-nitrosodimethylamine, and N-nitrosodiphenylamine. However, when they
  are known to be present, Methods 605, 607, and 612, orMethod 1625B, are preferred methods for these compounds.
\6\ ``Selected Analytical Methods Approved and Cited by the United States Environmental Protection Agency,'' Supplement to the Fifteenth Edition of
  Standard Methods for the Examination of Water and Wastewater (1981).
\7\ Each Analyst must make an initial, one-time demonstration of their ability to generate acceptable precision and accuracy with Methods 601-603, 624,
  625, 1624B, and 1625B (See Appendix A of this Part 136) in accordance with procedures each in Section 8.2 of each of these Methods. Additionally, each
  laboratory, on an on-going basis must spike and analyze 10% (5% for Methods 624 and 625 and 100% for methods 1624B and 1625B) of all samples to
  monitor and evaluate laboratory data quality in accordance with Sections 8.3 and 8.4 of these Methods. When the recovery of any parameter falls
  outside the warning limits, the analytical results for that parameter in the unspiked sample are suspect and cannot be reported to demonstrate
  regulatory compliance.
 Note: These warning limits are promulgated as an ``interim final action with a request for comments.''
\8\ ``Organochlorine Pesticides and PCBs in Wastewater Using Empore TM Disk'' 3M Corporation Revised 10/28/94.
\9\ USGS Method 0-3116-87 from ``Methods of Analysis by U.S. Geological Survey National Water Quality Laboratory--Determination of Inorganic and Organic
  Constituents in Water and Fluvial Sediments'' U.S. Geological Survey, Open File Report 93-125.


                                             Table 1D.--List of Approved Test Procedures for Pesticides \1\
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                       Standard Methods
             Parameter                      Method                 EPA 2, 7          18th, 19th, 20th Ed.            ASTM                   Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Aldrin.........................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410 B
2. Ametryn........................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p S68.
3. Aminocarb......................  TLC...................  ......................  ......................  ......................  Note 3, p. 94; Note
                                                                                                                                     6, p. S16.
4. Atraton........................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68.
5. Atrazine.......................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68; Note 9.
6. Azinphos methyl................  GC....................  ......................  ......................  ......................  Note 3, p. 25; Note
                                                                                                                                     6, p. S51.
7. Barban.........................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
8. [agr]-BHC......................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     8.
                                    GC/MS.................  625 \5\...............  6410 B................
9. [beta]-BHC.....................  GC....................  608...................  6630 C................  D3086-90..............  Note 8.
                                    GC/MS.................  625 \5\...............  6410 B................
10. [delta]-BHC...................  GC....................  608...................  6630 C................  D3086-90..............  Note 8.
                                    GC/MS.................  625 \5\...............  6410 B................
11. [gamma]-BHC (Lindane).........  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410 B................
12. Captan........................  GC....................  ......................  6630 B................  D3086-90..............  Note 3, p. 7.
13. Carbaryl......................  TLC...................  ......................  ......................  ......................  Note 3, p. 94, Note
                                                                                                                                     6, p. S60.
14. Carbophenothion...............  GC....................  ......................  ......................  ......................  Note 4, p. 27; Note
                                                                                                                                     6, p. S73.
15. Chlordane.....................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410 B................
16. Chloropropham.................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
17. 2,4-D.........................  GC....................  ......................  6640 B................  ......................  Note 3, p. 115; Note
                                                                                                                                     4, p. 40.
18. 4,4'-DDD......................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410 B................

[[Page 65244]]

 
19. 4,4'-DDE......................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410 B................
20. 4,4'-DDT......................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................   6410 B...............
21. Demeton-O.....................  GC....................  ......................  ......................  ......................  Note 3, p. 25; Note
                                                                                                                                     6, p. S51.
22. Demeton-S.....................  GC....................  ......................  ......................  ......................  Note 3, p. 25; Note
                                                                                                                                     6, p. S51.
23. Diazinon......................  GC....................  ......................  ......................  ......................  Note 3, p. 25; Note
                                                                                                                                     4, p. 27; Note 6,
                                                                                                                                     p. S51.
24. Dicamba.......................  GC....................  ......................  ......................  ......................  Note 3, p. 115.
25. Dichlofenthion................  GC....................  ......................  ......................  ......................  Note 4, p. 27; Note
                                                                                                                                     6, p. S73.
26. Dichloran.....................  GC....................  ......................  6630 B & C............  ......................  Note 3, p. 7.
27. Dicofol.......................  GC....................  ......................  ......................  D3086-90..............
28. Dieldrin......................  GC....................  608...................  6630 B & C............  ......................  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................   6410 B...............
29. Dioxathion....................  GC....................  ......................  ......................  ......................  Note 4, p. 27; Note
                                                                                                                                     6, p. S73.
30. Disulfoton....................  GC....................  ......................  ......................  ......................  Note 3, p. 25; Note
                                                                                                                                     6 p. S51.
31. Diuron........................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
32. Endosulfan I..................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625 \5\...............  6410 B................
33. Endosulfan II.................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     8.
                                    GC/MS.................  625 \5\...............  6410 B................
34. Endosulfan Sulfate............  GC....................  608...................  6630 C................  ......................  Note 8.
                                    GC/MS.................  625...................   6410 B...............
35. Endrin........................  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                    ......................  ......................  ......................                           4, p. 27; Note 8.
                                    GC/MS.................  625 \5\...............  6410 B................
36. Endrin aldehyde...............  GC....................  608...................  ......................  ......................  Note 8.
                                    GC/MS.................  625...................
37. Ethion........................  GC....................  ......................  ......................  ......................  Note 4, p. 27; Note
                                                                                                                                     6, p. S73.
38. Fenuron.......................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
39. Fenuron-TCA...................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
40. Heptachlor....................  GC....................  608...................  6630 B & C............  3086-90...............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410 B................
41. Heptachlor epoxide............  GC....................  608...................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                    ......................  ......................  ......................                           4, p. 27; Note 6,
                                    GC/MS.................  625...................  6410 B................                           p. S73; Note 8.
42. Isodrin.......................  GC....................  ......................  ......................  ......................  Note 4, p. 27; Note
                                                                                                                                     6, p. S73.
43. Linuron.......................  GC....................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
44. Malathion.....................  GC....................  ......................  6630 C................  ......................  Note 3, p. 25; Note
                                                                                                                                     4, p. 27; Note 6,
                                                                                                                                     p. S51
45. Methiocarb....................  TLC...................  ......................  ......................  ......................  Note 3, p. 94; Note
                                                                                                                                     6, p. S60.
46. Methoxychlor..................  GC....................  ......................  6630 B & C............  D3086-90..............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
47. Mexacarbate...................  TLC...................  ......................  ......................  ......................  Note 3, p. 94; Note
                                                                                                                                     6, p. S60.
48. Mirex.........................  GC....................  ......................  6630 B & C............  ......................  Note 3, p. 7; Note
                                                                                                                                     4, p. 27.
49. Monuron.......................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
50. Monuron.......................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
51. Nuburon.......................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
52. Parathion methyl..............  GC....................  ......................  6630 C................  ......................  Note 3, p. 25; Note
                                                                                                                                     4, p. 27.
53. Parathion ethyl...............  GC....................  ......................  6630 C................  ......................  Note 3, p. 25; Note
                                                                                                                                     4, p. 27.
54. PCNB..........................  GC....................  ......................  6630 B & C............  ......................  Note 3, p. 7.
55. Perthane......................  GC....................  ......................  ......................  D3086-90..............  Note 4, p. 27.
56. Prometron.....................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68; Note 9.
57. Prometryn.....................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68; Note 9.
58. Propazine.....................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68; Note 9.
59. Propham.......................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
60. Propoxur......................  TLC...................  ......................  ......................  ......................  Note 3, p. 94; Note
                                                                                                                                     6, p. S60.
61. Secbumeton....................  TLC...................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68.
62. Siduron.......................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
63. Simazine......................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68; Note 9.

[[Page 65245]]

 
64. Strobane......................  GC....................  ......................  6630 B & C............  ......................  Note 3, p. 7.
65. Swep..........................  TLC...................  ......................  ......................  ......................  Note 3, p. 104; Note
                                                                                                                                     6, p. S64.
66. 2,4,5-T.......................  GC....................  ......................  6640 B................  ......................  Note 3, p. 115; Note
                                                                                                                                     4, p. 40.
67. 2,4,5-TP (Silvex).............  GC....................  ......................  6640 B................  ......................  Note 3, p. 115; Note
                                                                                                                                     4, p. 40.
68. Terbuthylazine................  GC....................  ......................  ......................  ......................  Note 3, p. 83; Note
                                                                                                                                     6, p. S68.
69. Toxaphene.....................  GC....................  608...................  6630 B & C............  D3086--90.............  Note 3, p. 7; Note
                                                                                                                                     4, p. 27; Note 8.
                                    GC/MS.................  625...................  6410B.................
70. Trifluralin...................  GC....................  ......................  6630 B................  ......................  Note 3, p. 7; Note
                                                                                                                                     9.
--------------------------------------------------------------------------------------------------------------------------------------------------------
 Table ID notes:
\1\ Pesticides are listed in this table by common name for the convenience of the reader. Additional pesticides may be found under Table 1C, where
  entries are listed by chemical name.
\2\ The full text of Methods 608 and 625 are given at Appendix A. ``Test Procedures for Analysis of Organic Pollutants,'' of this Part 136. The
  standardized test procedure to be used to determine the method detection limit (MDL) for these test procedures is given at Appendix B, ``Definition
  and Procedure for the Determination of the Method Detection Limit,'' of this Part 136.
\3\ ``Methods for Benzidine, Chlorinated Organic Compounds, Pentachlorophenol and Pesticides in Water and Wastewater,'' U.S. Environmental Protection
  Agency, September 1978. This EPA publication includes thin-layer chromatography (TLC) methods.
\4\ ``Methods for Analysis of Organic Substances in Water and Fluvial Sediments,'' Techniques of Water-Resources Investigations of the U.S. Geological
  Survey, Book 5, Chapter A3 (1987).
\5\ The method may be extended to include [alpha]-BHC, [gamma]-BHC, endosulfan I, endosulfan II, and endrin. However, when they are known to exist,
  Method 608 is the preferred method.
\6\ ``Selected Analytical Methods Approved and Cited by the United States Environmental Protection Agency.'' Supplement to the Fifteenth Edition of
  Standard Methods for the Examination of Water and Wastewater (1981).
\7\ Each analyst must make an initial, one-time, demonstration of their ability to generate acceptable precision and accuracy with Methods 608 and 625
  (See Appendix A of this Part 136) in accordance with procedures given in Section 8.2 of each of these methods. Additionally, each laboratory, on an on-
  going basis, must spike and analyze 10% of all samples analyzed with Method 608 or 5% of all samples analyzed with Method 625 to monitor and evaluate
  laboratory data quality in accordance with Sections 8.3 and 8.4 of these methods. When the recovery of any parameter falls outside the warning limits,
  the analytical results for that parameter in the unspiked sample are suspect and cannot be reported to demonstrate regulatory compliance. These
  quality control requirements also apply to the Standard Methods, ASTM Methods, and other Methods cited.
Note: These warning limits are promulgated as an ``Interim final action with a request for comments.''
\8\ ``Organochlorine Pesticides and PCBs in Wastewater Using Empore TM Disk'', 3M Corporation, Revised 10/28/94.
\9\ USGS Method 0-3106-93 from ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Triazine and
  Other Nitrogen-containing Compounds by Gas Chromatography with Nitrogen Phosphorus Detectors'' U.S. Geological Survey Open File Report 94-37.


                                                 Table 1E.--List of Approved Radiologic Test Procedures
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                       Reference (method number or page)
                                                     ---------------------------------------------------------------------------------------------------
       Parameter and units              Method                                  Standard Methods 18th,
                                                               EPA\1\               19th, 20th Ed.                ASTM                   USGS \2\
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Alpha-Total, pCi per liter...  Proportional or     900                      7110 B                   D1943-90                 pp. 75 and 78 \3\
                                   scintillation
                                   counter.
2. Alpha-Counting error, pCi per  Proportional or     Appendix B               7110 B                   D1943-90                 p. 79
 liter.                            scintillation
                                   counter.
3. Beta-Total, pCi per liter....  Proportional        900.0                    7110 B                   D1890-90                 pp. 75 and 78 \3\
                                   counter.
4. Beta-Counting error, pCi.....  Proportional        Appendix B               7110 B                   D1890-90                 p. 79
                                   counter.
5. (a) Radium Total pCi per       Proportional        903.0                    7500Ra B                 D2460-90                 .......................
 liter.                            counter.
    (b) Ra, pCi per liter.......  Scintillation       903.1                    7500Ra C                 D3454-91                 p. 81
                                   counter.
--------------------------------------------------------------------------------------------------------------------------------------------------------
Table 1E notes:
\1\ ``Prescribed Procedures for Measurement of Radioactivity in Drinking Water,'' EPA-600/4-80-032 (1980), U.S. Environmental Protection Agency, August
  1980.
\2\ Fishman, M.J. and Brown, Eugene, ``Selected Methods of the U.S. Geological Survey of Analysis of Wastewaters,'' U.S. Geological Survey, Open-File
  Report 76-177 (1976).
\3\ The method found on p. 75 measures only the dissolved portion while the method on p. 78 measures only the suspended portion. Therefore, the two
  results must be added to obtain the ``total''.

* * * * *
    (b) * * *
    References, Sources, Costs, and Table Citations:
* * * * *
    (6) American Public Health Association. 1992, 1995, and 1998. 
Standard Methods for the Examination of Water and Wastewater. 18th, 
19th, and 20th Edition (respectively). Available from: Amer. Publ. 
Hlth. Assoc., 1015 15th Street, NW., Washington, DC 20005. Table IA, 
Note 4. Tables IB, IC, ID, IE.
* * * * *
    (10) Annual Book of ASTM Standards, Water, and Environmental 
Technology, Section 11, Volumes 11.01 and 11.02, 1994, 1996, and 1999. 
Available from: ASTM International, 100 Barr Harbor Drive, P.O. Box C-
700, West Conshohocken, PA 19428-2959. Tables IB, IC, ID, and IE.
* * * * *
    (44) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory Determination of

[[Page 65246]]

Ammonium Plus Organic Nitrogen by a Kjeldahl Digestion Method and an 
Automated Photometric Finish that Includes Digest Cleanup by Gas 
Diffusion'', Open File Report (OFR) 00-170. Available from: U.S. 
Geological Survey, Denver Federal Center, Box 25425, Denver, CO 80225. 
Table IB, Note 45.
    (45) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Chromium in Water by 
Graphite Furnace Atomic Absorption Spectrophotometry'', Open File 
Report (OFR) 93-449. Available from: U.S. Geological Survey, Denver 
Federal Center, Box 25425, Denver, CO 80225. Table IB, Note 46.
    (46) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Molybdenum in Water by 
Graphite Furnace Atomic Absorption Spectrophotometry'', Open File 
Report (OFR) 97-198. Available from: U.S. Geological Survey, Denver 
Federal Center, Box 25425, Denver, CO 80225. Table IB, Note 47.
    (47) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Total Phosphorus by Kjeldahl 
Digestion Method and an Automated Colorimetric Finish That Includes 
Dialysis'' Open File Report (OFR) 92-146. Available from: U.S. 
Geological Survey, Denver Federal Center, Box 25425, Denver, CO 80225. 
Table IB, Note 48.
    (48) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Arsenic and Selenium in 
Water and Sediment by Graphite Furnace--Atomic Absorption 
Spectrometry'' Open File Report (OFR) 98-639. Table IB, Note 49.
    (49) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Elements in Whole-Water 
Digests Using Inductively Coupled Plasma-Optical Emission Spectrometry 
and Inductively Coupled Plasma-Mass Spectrometry'' , Open File Report 
(OFR) 98-165. Available from: U.S. Geological Survey, Denver Federal 
Center, Box 25425, Denver, CO 80225. Table IB, Note 50.
    (50) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Triazine and Other Nitrogen-
containing Compounds by Gas Chromatography with Nitrogen Phosphorus 
Detectors'' U.S.Geological Survey Open File Report 94-37. Available 
from: U.S. Geological Survey, Denver Federal Center, Box 25425, Denver, 
CO 80225. Table ID, Note 9.
    (51) ``Methods of Analysis by the U.S. Geological Survey National 
Water Quality Laboratory--Determination of Inorganic and Organic 
Constituents in Water and Fluvial Sediments'', Open File Report (OFR) 
93-125. Available from: U.S. Geological Survey, Denver Federal Center, 
Box 25425, Denver, CO 80225. Table IB, Note 51; Table IC, Note 9.
* * * * *

PART 141--NATIONAL PRIMARY DRINKING WATER REGULATIONS

    1. The authority citation for Part 141 continues to read as 
follows:

    Authority: 42 U.S.C. 300f, 300g-1, 300g-2, 300g-3, 300g-4, 300g-
5, 300g-6, 300j-4, 300j-9, and 300j-11.

    2. Section 141.21 is amended:
    a. By revising footnote 1 to the table in paragraph (f)(3).
    b. By revising the 6th sentence in paragraph (f)(5).
    c. By revising paragraphs (f)(6)(i) and (f)(6)(ii).
    d. By removing the third sentence in paragraph (f)(8), and by 
removing the second sentence and adding two sentences in its place.


Sec.  141.21  Coliform sampling.

* * * * *
    (f) * * *
    (3) * * *

    \1\ Standard Methods for the Examination of Water and 
Wastewater, 18th edition (1992), 19th edition (1995), or 20th 
edition (1998). American Public Health Association, 1015 Fifteenth 
Street, NW, Washington, DC 20005. The cited methods published in any 
of these three editions may be used.

    (5) * * * The preparation of EC medium is described in Method 9221E 
(paragraph 1a) in Standard Methods for the Examination of Water and 
Wastewater, 18th edition (1992), 19th edition (1995), and 20th edition 
(1998); the cited method in any one of these three editions may be 
used. * * *
    (6) * * *
    (i) EC medium supplemented with 50 [mu]g/mL of 4-
methylumbelliferyl-beta-D-glucuronide (MUG) (final concentration), as 
described in Method 9222G in Standard Methods for the Examination of 
Water and Wastewater, 19th edition (1995) and 20th edition (1998). 
Either edition may be used. Alternatively, the 18th edition (1992) may 
be used if at least 10 mL of EC medium, as described in paragraph 
(f)(5) of this section, is supplemented with 50 [mu]g/mL of MUG before 
autoclaving. The inner inverted fermentation tube may be omitted. If 
the 18th edition is used, apply the procedure in paragraph (f)(5) of 
this section for transferring a total coliform-positive culture to EC 
medium supplemented with MUG, incubate the tube at 44.5 +/- 0.2[deg]C 
for 24 +/- 2 hours, and then observe fluorescence with an ultraviolet 
light (366 nm) in the dark. If fluorescence is visible, E. coli are 
present.
    (ii) Nutrient agar supplemented with 100 [mu]g/mL of 4-
methylumbelliferyl-beta-D-glucuronide (MUG) (final concentration), as 
described in Method 9222G in Standard Methods for the Examination of 
Water and Wastewater, 19th edition (1995) and 20th edition (1998). 
Either edition may be used for determining if a total coliform-positive 
sample, as determined by a membrane filter technique, contains E. coli. 
Alternatively, the 18th edition (1992) may be used if the membrane 
filter containing a total coliform-positive colony(ies) is transferred 
to nutrient agar, as described in Method 9221B (paragraph 3) of 
Standard Methods (18th edition), supplemented with 100 [mu]g/mL of MUG. 
If the 18th edition is used, incubate the agar plate at 35[deg]C for 4 
hours and then observe the colony(ies) under ultraviolet light (366 nm) 
in the dark for fluorescence. If fluorescence is visible, E. coli are 
present.
* * * * *
    (8) * * * Copies of the analytical methods cited in Standard 
Methods for the Examination of Water and Wastewater (18th, 19th, and 
20th editions) may be obtained from the American Public Health 
Association et al.; 1015 Fifteenth Street, NW., Washington, DC 20005-
2605. Copies of the MMO-MUG Test, as set forth in the article 
``National Field Evaluation of a Defined Substrate Method for the 
Simultaneous Enumeration of Total Coliforms and Escherichia coli from 
Drinking Water: Comparison with the Standard Multiple Tube Fermentation 
Method'' (Edberg et al.) may be obtained from the American Water Works 
Association Research Foundation, 6666 West Quincy Avenue, Denver, CO 
80235. * * *
* * * * *

    3. Section 141.23 is amended by revising the table and the 
footnotes in paragraph (k)(1) to read as follows:


Sec.  141.23  Inorganic chemical sampling and analytical requirements.

* * * * *
    (k) * * *
    (l) * * *

[[Page 65247]]



------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Contaminant and  methodology \13\                EPA                          ASTM \3\                SM \4\  (18th, 19th ed.)           SM \4\  (20th ed.)                    Other
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Alkalinity:
    Titrimetric..................  ..............................  D1067--92B....................  2320 B........................  2320 B
    Electrometric titration......  ..............................  ..............................  ..............................  ..............................  I-1030-85 \5\
2. Antimony:
    Inductively Coupled Plasma     200.8 \2\.....................
     (ICP)--Mass Spectrometry.
    Hydride-Atomic Absorption....  ..............................  D3697-92
    Atomic Absorption; Platform..  200.9 \2\
    Atomic Absorption; Furnace...  ..............................  ..............................  3113 B
3. Arsenic: \14\
    Inductively Coupled Plasma     200.7 \2\.....................  ..............................  3120 B........................  3120 B
     \15\.
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
    Atomic Absorption; Furnace...  ..............................  D2972-97C.....................  3113 B
    Hydride Atomic Absorption....  ..............................  D2972-97B.....................  3114 B
4. Asbestos:
    Transmission Electron          100.1 \9\.....................
     Microscopy.
    Transmission Electron          100.2 \10\....................
     Microscopy.
5. Barium:
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Direct....  ..............................  ..............................  3111 D
    Atomic Absorption; Furnace...  ..............................  ..............................  3113 B
6. Beryllium:
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
    Atomic Absorption; Furnace...  ..............................  D3645--97B....................  3113 B
7. Cadmium:
    Inductively Coupled Plasma...  200.7 \2\
    ICP-Mass Spectrometry........  200.8 \2\
    Atomic Absorption; Platform..  200.9 \2\
    Atomic Absorption; Furnace...  ..............................  ..............................  3113 B........................
8. Calcium:
    EDTA titrimetric.............  ..............................  D511--93A.....................  3500-Ca D.....................  3500-Ca B.....................
    Atomic Absorption; Direct      ..............................  D511--93B.....................  3111 B........................
     Aspiration.
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B........................
9. Chromium:
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B........................
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
    Atomic Absorption; Furnace...  ..............................  ..............................  3113 B........................
10. Copper:
    Atomic Absorption; Furnace...  ..............................  D1688-95C.....................  3113 B........................
    Atomic Absorption; Direct      ..............................  D1688-95A.....................  3111 B........................
     Aspiration.
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B........................

[[Page 65248]]

 
    ICP-Mass spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
11. Conductivity:
    Conductance..................  ..............................  D1125-95A.....................  2510 B........................  2510 B........................
12. Cyanide:
    Manual Distillation followed   ..............................  D2036-98A.....................  4500-CN- C....................  4500-CN- C....................
     by.
        Spectrophotometric,        ..............................  D2036-98B.....................  4500-CN- G....................  4500-CN- G....................
         Amenable.
        Spectrophotometric Manual  ..............................  D2036-98A.....................  4500-CN- E....................  4500-CN- E....................  I-3300-85 \5\
        Spectrophotometric Semi-   335.4 \6\.....................
         automated.
    Selective Electrode..........  ..............................  ..............................  4500-CN- F....................  4500-CN- F....................
13. Fluoride:
    Ion Chromatography...........  300.0 \6\.....................  D4327-97......................  4110 B........................  4110 B........................
    Manual Distill.; Color.        ..............................  ..............................  4500-F- B,D...................  4500-F- B,D...................  .............................
     SPADNS.
    Manual Electrode.............  ..............................  D1179-93B.....................  4500-F- C.....................  4500-F- C.....................  .............................
    Automated Electrode..........  ..............................  ..............................  ..............................  ..............................  380-75WE \11\
    Automated Alizarin...........  ..............................  ..............................  4500-F- E.....................  4500-F- E.....................  29-71W \11\
14. Lead:
    Atomic Absorption; Furnace...  ..............................  D3559-96D.....................  3113 B........................
    ICP-Mass spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
    Differential Pulse Anodic      ..............................  ..............................  ..............................  ..............................  Method 1001 \16\
     Stripping Voltammetry.
15. Magnesium:
    Atomic Absorption............  ..............................  D511-93 B.....................  3111 B........................
    ICP..........................  200.7 \2\.....................  ..............................  3120 B........................  3120 B........................
    Complexation Titrimetric       ..............................  D511-93 A.....................  3500-Mg E.....................  3500-Mg B.....................
     Methods.
16. Mercury:
    Manual, Cold Vapor...........  245.1 \2\.....................  D3223-97......................  3112 B........................
    Automated, Cold Vapor........  245.2 \1\.....................
    ICP-Mass Spectrometry........  200.8 \2\.....................
17. Nickel:
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B........................
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
    Atomic Absorption; Direct....  ..............................  ..............................  3111 B........................
    Atomic Absorption; Furnace...  ..............................  ..............................  3113 B........................
18. Nitrate:
    Ion Chromatography...........  300.0 \6\.....................  D4327-97......................  4110 B........................  4110 B........................  B-1011 \8\
    Automated Cadmium Reduction..  353.2 \6\.....................  D3867-90A.....................  4500-NO3- F...................  4500-NO3- F...................
    Ion Selective Electrode......  ..............................  ..............................  4500-NO3- D...................  4500-NO3- D...................  601 \7\
    Manual Cadmium Reduction.....  ..............................  D3867-90B.....................  4500-NO3- E...................  4500-NO3- E...................
19. Nitrite:
    Ion Chromatography...........  300.0 \6\.....................  D4327-97......................  4110 B........................  4110 B........................  B-1011 \8\
    Automated Cadmium Reduction..  353.2 \6\.....................  D3867-90A.....................  4500-NO3-.....................  4500-NO3- F...................
    Manual Cadmium Reduction.....  ..............................  D3867-90B.....................  4500-NO3- E...................  4500-NO3- E...................  .............................
    Spectrophotometric...........  ..............................  ..............................  4500-NO2- B...................  4500- NO2- B..................
20. Ortho-phosphate: \12\
    Colorimetric, Automated,       365.1 \6\.....................  ..............................  4500-P F......................  4500-P F......................
     Ascorbic Acid.
    Colorimetric, ascorbic acid,   ..............................  D515-88A......................  4500-P E......................  4500-P E......................
     single reagent.
    Colorimetric                   ..............................  ..............................  ..............................  ..............................  I-1601-85 \5\
     Phosphomolybdate;.
        Automated-segmented Flow;  ..............................  ..............................  ..............................  ..............................  I-2601-90 \5\

[[Page 65249]]

 
        Automated Discrete.......  ..............................  ..............................  ..............................  ..............................  I-2598-85 \5\
    Ion Chromatography...........  300.0 \6\.....................  D4327-97......................  4110 B........................  4110 B........................
21. pH:
    Electrometric................  150.1 \1\.....................  D1293-95......................  4500-H+ B.....................  4500-H+ B.....................
                                   150.2 \1\.....................
22. Selenium:
    Hydride-Atomic Absorption....  ..............................  D3859-98A.....................  3114 B........................
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
    Atomic Absorption; Furnace...  ..............................  D3859-98B.....................  3113 B........................
23. Silica:
    Colorimetric, Molybdate Blue;  ..............................  ..............................  ..............................  ..............................  I-1700-85 \5\
        Automated-segmented Flow.  ..............................  ..............................  ..............................  ..............................  I-2700-85 \5\
    Colorimetric.................  ..............................  D859-95.......................
    Molybdosilicate..............  ..............................  ..............................  4500-Si D.....................  4500-SiO2 C...................
    Heteropoly Blue..............  ..............................  ..............................  4500-Si E.....................  4500-SiO2 D...................
    Automated for Molybdate-       ..............................  ..............................  4500-Si F.....................  4500-SiO2 E...................
     reactive Silica.
    Inductively Coupled Plasma...  200.7 \2\.....................  ..............................  3120 B........................  3120 B........................
24. Sodium:
    Inductively Coupled Plasma...  200.7 \2\.....................
    Atomic Absorption; Direct      ..............................  ..............................  3111 B........................
     Aspiration.
25. Temperature:
    Thermometric.................  ..............................  ..............................  2550..........................  2550..........................
26. Thallium:
    ICP-Mass Spectrometry........  200.8 \2\.....................
    Atomic Absorption; Platform..  200.9 \2\.....................
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
The procedures shall be done in accordance with the documents listed below. The incorporation by reference of the following documents listed in footnotes 1-11 and 16 was approved by the
  Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the documents may be obtained from the sources listed below. Information regarding obtaining
  these documents can be obtained from the Safe Drinking Water Hotline at 800-426-4791. Documents may be inspected at EPA'sDrinking Water Docket, EPA West, 1301 Constitution Avenue, NW, Room
  B135, Washington, DC (Telephone: 202-566-2426); or at the Office of the Federal Register, 800 North Capitol Street, NW., Suite 700, Washington, DC.
\1\ ``Methods for Chemical Analysis of Water and Wastes'', EPA/600/4-79/020, March 1983. Available at NTIS, PB84-128677.
\2\ ``Methods for the Determination of Metals in Environmental Samples--Supplement I'', EPA/600/R-94/111, May 1994. Available at NTIS, PB95-125472.
\3\ Annual Book of ASTM Standards, 1994, 1996, or 1999, Vols. 11.01 and 11.02, ASTM International; any year containing the cited version of the method may be used. The previous versions of
  D1688-95A, D1688-95C (copper), D3559-95D (lead), D1293-95 (pH), D1125-91A (conductivity) and D859-94 (silica) are also approved. These previous versions D1688-90A, C; D3559-90D, D1293-84,
  D1125-91A and D859-88, respectively are located in the Annual Book of ASTM Standards, 1994, Vol. 11.01. Copies may be obtained from ASTM International, 100 Barr Harbor Drive, West
  Conshohocken, PA 19428.
\4\ Standard Methods for the Examination of Water and Wastewater, 18th edition (1992), 19th edition (1995), or 20th edition (1998). American Public Health Association, 1015 Fifteenth Street,
  NW, Washington, DC 20005. The cited methods published in any of these three editions may be used, except that the versions of 3111 B, 3111 D, 3113 B and 3114 B in the 20th edition may not be
  used.
\5\ Method I-2601-90, Methods for Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Inorganic and Organic Constituents in Water and Fluvial Sediment,
  Open File Report 93-125, 1993; For Methods I-1030-85; I-1601-85; I-1700-85; I-2598-85; I-2700-85; and I-3300-85 See Techniques of Water Resources Investigation of the U.S. Geological Survey,
  Book 5, Chapter A-1, 3rd ed., 1989; Available from Information Services, U.S. Geological Survey, Federal Center, Box 25286, Denver, CO 80225-0425.
\6\ ``Methods for the Determination of Inorganic Substances in Environmental Samples'', EPA/600/R-93/100, August 1993. Available at NTIS, PB94-120821.
\7\ The procedure shall be done in accordance with the Technical Bulletin 601 ``Standard Method of Test for Nitrate in Drinking Water'', July 1994, PN 221890-001, Analytical Technology, Inc.
  Copies may be obtained from ATI Orion, 529 Main Street, Boston, MA 02129.
\8\ Method B-1011, ``Waters Test Method for Determination of Nitrite/Nitrate in Water Using Single Column Ion Chromatography,'' August 1987. Copies may be obtained from Waters Corporation,
  Technical Services Division, 34 Maple Street, Milford, MA 01757.
\9\ Method 100.1, ``Analytical Method For Determination of Asbestos Fibers in Water'', EPA/600/4-83/043, EPA, September 1983. Available at NTIS, PB83-260471.
\10\ Method 100.2, ``Determination of Asbestos Structure Over 10[mu]m In Length In Drinking Water'', EPA/600/R-94/134, June 1994. Available at NTIS, PB94-201902.
\11\ Industrial Method No. 129-71W, ``Fluoride in Water and Wastewater'', December 1972, and Method No. 380-75WE, ``Fluoride in Water and Wastewater'', February 1976, Technicon Industrial
  Systems. Copies may be obtained from Bran & Luebbe, 1025 Busch Parkway, Buffalo Grove, IL 60089.
\12\ Unfiltered, no digestion or hydrolysis.
\13\ Because MDLs reported in EPA Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion, MDLs determined when samples are analyzed by direct analysis
  (i.e., no sample digestion) will be higher. For direct analysis of cadmium and arsenic by Method 200.7, and arsenic by Method 3120 B sample preconcentration using pneumatic nebulization may
  be required to achieve lower detection limits. Preconcentration may also be required for direct analysis of antimony, lead, and thallium by Method 200.9; antimony and lead by Method 3113 B;
  and lead by Method D3559-90D unless multiple in-furnace depositions are made.

[[Page 65250]]

 
\14\ If ultrasonic nebulization is used in the determination of arsenic by Methods 200.7, 200.8, or SM 3120 B, the arsenic must be in the pentavalent state to provide uniform signal response.
  For methods 200.7 and 3120 B, both samples and standards must be diluted in the same mixed acid matrix concentration of nitric and hydrochloric acid with the addition of 100 [mu]L of 30%
  hydrogen peroxide per 100ml of solution. For direct analysis of arsenic with method 200.8 using ultrasonic nebulization, samples and standards must contain one mg/L of sodium hypochlorite.
\15\ After January 23, 2006 analytical methods using the ICP-AES technology, may not be used because the detection limits for these methods are 0.008 mg/L or higher. This restriction means
  that the two ICP-AES methods (EPA Method 200.7 and SM 3120 B) approved for use for the MCL of 0.05 mg/L may not be used for compliance determinations for the revised MCL of 0.01 mg/L.
  However, prior to 2005 systems may have compliance samples analyzed with these less sensitive methods.
\16\ The description for Method Number 1001 for lead is available from Palintest, LTD, 21 Kenton Lands Road, P.O. Box 18395, Erlanger, KY 41018. Or from the Hach Company, P.O. Box 389,
  Loveland, CO 80539.

* * * * *

    4. Section 141.24 is amended by revising the 11th, 12th and last 
sentences in paragraph (e)(1), before the Table, to read as follows:


Sec.  141.24  Organic chemicals, sampling and analytical requirements.

* * * * *
    (e) * * *
    (1) * * * Method 6651 shall be followed in accordance with Standard 
Methods for the Examination of Water and Wastewater, 18th edition 
(1992), 19th edition (1995), or 20th edition (1998), American Public 
Health Association (APHA); any of these three editions may be used. 
Method 6610 shall be followed in accordance with Standard Methods for 
the Examination of Water and Wastewater, (18th Edition Supplement) 
(1994), or with the 19th edition (1995) or 20th edition (1998) of 
Standard Methods for the Examination of Water and Wastewater; any of 
these three editions may be used. * * * ASTM Method D 5317-93 is 
available in the Annual Book of ASTM Standards (1999), Vol. 11.02, ASTM 
International, 100 Barr Harbor Drive, West Conshohocken, PA 19428, or 
in any edition published after 1993.
* * * * *
    5. Section 141.25 is amended by revising the Table and footnotes in 
paragraph (a) to read as follows:


Sec.  141.25  Analytical methods for radioactivity.

    (a) * * *

[[Page 65251]]



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                                                                                                         Reference (method or page number)
          Contaminant              Methodology    ----------------------------------------------------------------------------------------------------------------------------------------------
                                                      EPA \1\       EPA \2\       EPA \3\       EPA \4\              SM \5\               ASTM \6\         USGS \7\       DOE \8\       Other
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Naturally occurring:
    Gross alpha\11\ and beta..  Evaporation......  900.0.......  p 1.........  00-01.......  p 1.........  302, 7110 B..............  ...............  R-1120-76......               ...........
    Gross alpha\11\...........  Co-precipitation.  ............  ............  00-02.......  ............  7110 C...................                                                 ...........
    Radium 226................  Radon emanation..  903.1.......  p 16........  Ra-04.......  p 19........  305,7500-Ra C............  D 3454-97......  R-1141-76......  Ra-04......  N.Y.\9\
                                Radiochemi- cal..  903.0.......  p 13........  Ra-03.......  ............  304,7500-Ra B............  D 2460-97......  R-1140-76......               ...........
    Radium 228................  Radiochemi- cal..  904.0.......  p 24........  Ra-05.......  p 19........  7500-Ra D................  ...............  R-1142-76......  ...........  N.Y.\9\,
                                                                                                                                                                                      N.J.\10\
    Uranium\12\...............  Radiochemi- cal..  908.0.......  ............  ............  ............  7500-U B
                                Fluorometric.....  908.1.......  ............  ............  ............  7500-U C (17th Ed.)......  D2907-97.......  R-1180-76, R-    U-04
                                                                                                                                                        1181-76.
                                Alpha              ............  ............  00-07.......  p 33........  7500-U C (18th, 19th or    D 3972-97......  R-1182-76......  U-02
                                 spectrometry.                                                              20th Ed.).
                                Laser              ............  ............  ............  ............  .........................  D 5174-97......                                ...........
                                 Phosphorimetry.
Man-made:
    Radioact-.................  Radiochemi-......  901.0.......  p 4.........  ............  ............  7500-CsB.................  D 2459-72......  R-1111-76......               ...........
    ive cesium................  cal..............
                                Gamma ray          901.1.......  ............  ............  p 92........  7120.....................  D 3649-91......  R- 1110-76.....  4.5.2.3....  ...........
                                 spectrometry.
    Radioact-.................  Radiochemi-......  902.0.......  p 6, p 9....  ............  ............  7500-I B, 7500-I C, 7500-  D 3649-91......
    ive iodine................  cal..............                                                           I D.
                                Gamma ray          901.1.......  ............  ............  p 92........  7120.....................  D 4785-93......  ...............  4.5.2.3....  ...........
                                 spectrometry.
    Radioact-.................  Radiochemi-......  905.0.......  p 29........  Sr-04.......  p 65........  303, 7500-Sr B...........  ...............  R-1160-76......  Sr-01, Sr-   ...........
    ive Strontium 89, 90......  cal..............                                                                                                                        02
    Tritium...................  Liquid             906.0.......  p 34........  H-02........  p 87........  306, 7500-3H B...........  D 4107-91......  R-1171-76......
                                 scintillation.
    Gamma emitters............  Gamma ray........  901.1.......  ............  ............  p 92........  7120.....................  D 3649-91......  R-1110-76......  Ga-01-R....  ...........
                                Spectrometry.....  902.0, 901.0  ............  ............  ............  7500-Cs B, 7500-I B......  D 4785-93......
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The procedures shall be done in accordance with the documents listed below. The incorporation by reference of documents 1 through 10 was approved by the Director of the Federal Register in
  accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the documents may be obtained from the sources listed below. Information regarding obtaining these documents can be obtained from
  the Safe Drinking Water Hotline at 800-426-4791. Documents may be inspected at EPA's Drinking Water Docket, EPA West, 1301 Constitution Avenue, NW., Room B135, Washington, DC (Telephone: 202-
  566-2426); or at the Office of the Federal Register, 800 North Capitol Street, NW., Suite 700, Washington, DC.
\1\ ``Prescribed Procedures for the Measurement of Radioactivity in Drinking Water'', EPA 600/4-80-032, August 1980. Available at the U.S. Department of Commerce, National Technical
  Information Service (NTIS), 5285 Port Royal Road, Springfield, VA 22161 (Telephone 800-553-6847), PB 80-224744.
\2\ ``Interim Radiochemical Methodology for Drinking Water'', EPA 600/4-75-008(revised), March 1976. Available NTIS, ibid. PB 253258.
\3\ ``Radiochemistry Procedures Manual'', EPA 520/5-84-006, December, 1987. Available NTIS, ibid. PB 84-215581.
\4\ ``Radiochemical Analytical Procedures for Analysis of Environmental Samples'', March 1979. Available at NTIS, ibid. EMSL LV 053917.
\5\ ``Standard Methods for the Examination of Water and Wastewater'', 13th, 17th, 18th, 19th Editions, or 20th edition, 1971, 1989, 1992, 1995, 1998. Available at American Public Health
  Association, 1015 Fifteenth Street NW., Washington, DC 20005 . Methods 302, 303, 304, 305 and 306 are only in the 13th edition. Methods 7110B, 7500-Ra B, 7500-Ra C, 7500-Ra D, 7500-U B, 7500-
  Cs B, 7500-I B, 7500-I C, 7500-I D, 7500-Sr B, 7500-3H B are in the 17th, 18th, 19th and 20th editions. Method 7110 C is in the 18th, 19th and 20th editions. Method 7500-U C Fluorometric
  Uranium is only in the 17th Edition, and 7500-U C Alpha spectrometry is only in the 18th, 19th and 20th editions. Method 7120 is only in the 19th and 20th editions. Methods 302, 303, 304,
  305 and 306 are only in the 13th edition.
\6\ Annual Book of ASTM Standards, Vol. 11.01 and 11.02, 1999; ASTM International any year containing the cited version of the method may be used. Copies may be obtained from ASTM
  International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.
\7\ ``Methods for Determination of Radioactive Substances in Water and Fluvial Sediments'', Chapter A5 in Book 5 of Techniques of Water-Resources Investigations of the United States Geological
  Survey, 1977. Available at U.S. Geological Survey (USGS) Information Services, Box 25286, Federal Center, Denver, CO 80225-0425.
\8\ ``EML Procedures Manual'', 28th (1997) or 27th (1990) Editions, Volumes 1 and 2; either edition may be used. In the 27th Edition Method Ra-04 is listed as Ra-05 and Method Ga-01-R is
  listed as Sect. 4.5.2.3. Available at the Environmental Measurements Laboratory, U.S. Department of Energy (DOE), 376 Hudson Street, New York, NY 10014-3621.
\9\ ``Determination of Ra-226 and Ra-228 (Ra-02)'', January 1980, Revised June 1982. Available at Radiological Sciences Institute for Laboratories and Research, New York State Department of
  Health, Empire State Plaza, Albany, NY 12201.

[[Page 65252]]

 
\10\ ``Determination of Radium 228 in Drinking Water'', August 1980. Available at State of New Jersey, Department of Environmental Protection, Division of Environmental Quality, Bureau of
  Radiation and Inorganic Analytical Services, 9 Ewing Street, Trenton, NJ 08625.
\11\ Natural uranium and thorium-230 are approved as gross alpha calibration standards for gross alpha with co-precipitation and evaporation methods; americium-241 is approved with co-
  precipitation methods.
\12\ In uranium (U) is determined by mass, a 0.67 pCi/[mu]g of uranium conversion factor must be used. This conversion factor is based on the 1:1 activity ration of U-234 and U-238 that is
  characteristic of naturally occurring uranium.

* * * * *

    6. Section 141.74 is amended by revising the footnote 1 to the 
Table in paragraph (a)(1) and by revising the first three sentences of 
paragraph (a)(2) to read as follows:


Sec.  141.74  Analytical and monitoring requirements.

    (a) * * *
    (1) * * *

    \1\ Except where noted, all methods refer to Standard Methods 
for the Examination of Water and Wastewater, 18th edition (1992), 
19th edition (1995), or 20th edition (1998), American Public Health 
Association, 1015 Fifteenth Street NW, Washington, D.C. 20005. The 
cited methods published in any of these three editions may be used.
* * * * *
    (2) Public water systems must measure residual disinfectant 
concentrations with one of the analytical methods in the following 
table. Except for the method for ozone residuals, the disinfectant 
residual methods are contained in the 18th, 19th, and 20th editions of 
Standard Methods for the Examination of Water and Wastewater, 1992, 
1995, and 1998; the cited methods published in any of these three 
editions may be used. The ozone method, 4500-O3 B, is 
contained in both the 18th and 19th editions of Standard Methods for 
the Examination of Water and Wastewater, 1992, 1995; either edition may 
be used. * * *
* * * * *

PART 143--NATIONAL SECONDARY DRINKING WATER REGULATIONS

    1. The authority citation for Part 143 continues to read as 
follows:

    Authority: 42 U.S.C. 300f et seq.


    2. Section 143.4 is amended by revising the Table and footnotes in 
paragraph (b) to read as follows:


Sec.  143.4  Monitoring.

* * * * *
    (b) * * *

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                                                                                   SM \4\  18th and 19th
          Contaminant                     EPA                    ASTM \3\                   ed.              SM \4\  20th ed.              Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Aluminum...................  200.7 \2\..............  .......................  3120 B................  3120 B................
                                200.8 \2\..............  .......................  3113 B................
                                200.9 \2\..............  .......................  3111 D................
2. Chloride...................  300.0 \1\..............  D4327-97...............  4110 B................  4110 B................
                                .......................  .......................  4500-Cl- D............  4500--Cl- D...........
                                .......................  D512-89B...............  4500-Cl- B............  4500-Cl- B............
3. Color......................  .......................  .......................  2120 B................  2120 B................
4. Foaming Agents.............  .......................  .......................  5540 C................  5540 C................
5. Iron.......................  200.7 \2\..............  .......................  3120 B................  3120 B................
                                200.9 \2\..............  .......................  3111 B................
                                .......................  .......................  3113 B................
6. Manganese..................  200.7 \2\..............  .......................  3120 B................  3120 B................
                                200.8 \2\..............  .......................  3111 B................
                                200.9 \2\..............  .......................  3113 B................
7. Odor.......................  .......................  .......................  2150 B................  2150 B................
8. Silver.....................  200.7 \2\..............  .......................  3120 B................  3120 B................  I-3720-85 \5\
                                200.8 \2\..............  .......................  3111 B................
                                200.9 \2\..............  .......................  3113 B................
9. Sulfate....................  300.0 \1\..............  D4327-97...............  4110 B................  4110 B................
                                375.2 \1\..............  .......................  4500-SO42- F..........  4500-SO42- F..........
                                                                                  4500-SO42-C, D........  4500-SO42-C, D........
                                                         D516-90................  4500-SO42- E..........  4500-SO42- E..........
10. Total Dissolved Solids....  .......................  .......................  2540 C................  2540 C................
11. Zinc......................  200.7 \2\..............  .......................  3120 B................  3120 B................
                                200.8 \2\..............  .......................  3111 B ...............
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The procedures shall be done in accordance with the documents listed below. The incorporation by reference of the following documents was approved by
  the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the documents may be obtained from the sources
  listed below. Information regarding obtaining these documents can be obtained from the Safe Drinking Water Hotline at 800-426-4791. Documents may be
  inspected at EPA's Drinking Water Docket, EPA West, 1301 Constitution Avenue, NW, Room B135, Washington, DC (Telephone: 202-566-2426); or at the
  Office of Federal Register, 800 North Capitol Street, NW, Suite 700, Washington, DC 20408.
\1\ ``Methods for the Determination of Inorganic Substances in Environmental Samples'', EPA/600/R-93-100, August 1993. Available at NTIS, PB94-120821.
\2\ ``Methods for the Determination of Metals in Environmental Samples--Supplement I'', EPA/600/R-94-111, May 1994. Available at NTIS, PB 95-125472.
\3\ Annual Book of ASTM Standards, 1994, 1996, or 1999, Vols. 11.01 and 11.02, ASTM International; any year containing the cited version of the method
  may be used. Copies may be obtained from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.
 

[[Page 65253]]

 
\4\ Standard Methods for the Examination of Water and Wastewater, 18th edition (1992), 19th edition (1995), or 20th edition (1998). American Public
  Health Association, 1015 Fifteenth Street, NW, Washington, DC 20005. The cited methods published in any of these three editions may be used, except
  that the versions of 3111 B, 3111 D, and 3113 B in the 20th edition may not be used.
\5\ Method I-3720-85, Techniques of Water Resources Investigation of the U.S. Geological Survey, Book 5, Chapter A-1, 3rd ed., 1989; Available from
  Information Services, U.S. Geological Survey, Federal Center, Box 25286, Denver, CO 80225-0425.

[FR Doc. 02-23727 Filed 10-22-02; 8:45 am]
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