[Federal Register Volume 87, Number 68 (Friday, April 8, 2022)]
[Rules and Regulations]
[Pages 20721-20761]
[FR Doc No: 2022-07541]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 302

[EPA-HQ-OLEM-2022-0299; FRL-9335-01-OLEM]

Addition of 1-Bromopropane to the List of CERCLA Hazardous
Substances; List of Hazardous Substances; Technical Corrections

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The U.S. Environmental Protection Agency (EPA or the Agency)
is issuing a technical amendment to modify the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) list
of hazardous substances, to be consistent with the statutory provisions
that currently comprise this list. These modifications include adding
the Clean Air Act (CAA) HAP 1-Bromopropane and removing the Resource
Conservation and Recovery Act (RCRA) vacated K-Code Wastes: K064, K065,
K066, K090, and K091. The Agency is also adding clarifying language,
correcting a Chemical Abstract Service Registry Number (CASRN), and
modifying the formatting of hazardous substance isomers and homologs
that are listed with parent substances.

DATES: This final rule is effective on April 8, 2022.

FOR FURTHER INFORMATION CONTACT: Jennifer Barre, U.S. Environmental
Protection Agency, Office of Emergency Management, (MC: 5104A), 1200
Pennsylvania Avenue NW, Washington,

DC 20460;<PHONE_NUMBER>; [email protected].

SUPPLEMENTARY INFORMATION:

I. General Information

    Entities that may be affected by this action include: (a) Industry:
Manufacturers, handlers, transporters, and other users of Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA)
hazardous substances, (b) State, local, or Tribal governments: State
Emergency Response Commissions (SERCs), Tribal Emergency Response
Commissions (TERCs), Local Emergency Planning Committees (LEPCs),
Tribal Emergency Planning Committees (TEPCs), (c) First responders:
fire departments, (d) Federal government: National Response Center, any
federal agency that has regulations based on the CERCLA regulation, and
any federal agency that may release or respond to releases of these
substances.
    This technical amendment is modifying 40 CFR 302.4 and Table 302.4
``List of Hazardous Substances and Reportable Quantities.'' Table 302.4
provides a list of hazardous substances as defined by the statute
[CERCLA section 101(14); 42 U.S.C. 9601(14)] to include the following
substances: (1) Clean Water Act (CWA) Hazardous Substances per section
311(b)(2) of the CWA [40 CFR 116.4; 33 U.S.C. 1321(b)(2)(A)], (2) CWA
Toxic Pollutants per section 307(a) of the CWA [40 CFR 401.15, 40 CFR
part 423 Appendix A, and 40 CFR 131.36; 33 U.S.C. 1317(a)], (3) Clean
Air Act (CAA) Hazardous Air Pollutants (HAPs) per section 112(b) of the
CAA [42 U.S.C. 7412(b); Pub. L. 101-549 November 15, 1990] \1\, and (4)
Resource Conservation and Recovery Act (RCRA) Hazardous Wastes per
section 3001 of the RCRA [40 CFR part 261 Subpart D--Lists of Hazardous
Wastes; 42 U.S.C. 6921].
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    \1\ The original list of HAPs has been modified by the EPA in
the following Federal Register Notices: 70 FR 75047, December 19,
2005; 69 FR 69320, November 29, 2004; 61 FR 30816, June 18, 1996; 65
FR 47342, August 2, 2000, and 87 FR 393, January 5, 2022.
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II. What does this amendment do?

    This technical amendment is revising the list of CERCLA hazardous
substances in 40 CFR part 302, Table 302.4 to be consistent with the
statutory provisions that currently comprised this list (CWA Hazardous
Substances, CWA Toxic Pollutants, CAA HAPs, and RCRA Hazardous Wastes).
As further described below, the EPA is updating various CASRNs in this
action so that they are consistent with the hazardous substance listing
authorities and align with the Chemical Abstract Service, which is a
division of the American Chemical Society and is the authoritative
source for CASRNs. The entire Table 302.4 is being reprinted in this FR
notice due to the complexity of transcribing the technical changes. The
following is a list of the technical amendments that are being made
within Table 302.4:
    (a) Adding the CAA HAP 1-Bromopropane (1-BP) (CASRN 106-94-5) and
its synonym n-Propyl bromide (nPB), pursuant to CERCLA section 101(14)
and the establishment of a one-pound reportable quantity (RQ), per the
statutory default set in CERCLA section 102(b). Also, adding the
statutory code ``3'' indicating that this is a CAA HAP. This technical
amendment is due to 1-Bromopropane being added as a CAA HAP. [87 FR
393, January 5, 2022]
    (b) Deleting the RCRA Hazardous Waste vacated K-Code substances:
K064, K065, K066, K090, and K091. This technical amendment is due to
removal of these five waste codes from the list of RCRA Hazardous
Wastes. [75 FR 12993, March 18, 2010; 64 FR 56470, October 20, 1999; 63
FR 28599, May 26, 1998]
    (c) Removing the CWA Toxic Pollutants Statutory Code ``2'' for
Dichloromethyl ether (CASRN 542-88-1) and its synonyms: Methane,
oxybis(chloro- and Bis(chloromethyl) ether. This technical correction
is being made due to a clerical error; Dichloromethyl ether is not and
has not been listed as a CWA Toxic Pollutant. [40 CFR 401.15, 40 CFR
part 423 Appendix A, and 40 CFR 131.36]
    (d) Removing the CWA Toxic Pollutants Statutory Code ``2'' for
``4,6-Dinitro-o-cresol, and salts'' and its synonym ``Phenol, 2-methyl-
4,6-dinitro-, & salts'' (CASRN 534-52-1). And, adding the CWA Priority
Toxic Pollutant ``4,6-Dinitro-o-cresol'' and its synonym ``Phenol, 2-
methyl-4,6-dinitro-.'' These technical corrections are being made due
to a clerical error; the words ``, & salts'' do not and have not
appeared in the CWA Toxic Pollutants lists. [40 CFR 401.15, 40 CFR part
423 Appendix A, and 40 CFR 131.36]
    (e) Adding the CWA Toxic Pollutants Statutory Code ``2'' for the
CWA Toxic Pollutants: Dichlorobenzene (25321-22-6), Dichloropropane
(CASRN 26638-19-7), Dichloropropene (CASRN 26952-23-8), and
Trichlorophenol (CASRN 25167-82-2). This technical correction is due to
a clerical error; these substances are CWA Toxic Pollutants. [44 FR
44503, July 30, 1979; 40 CFR 401.15, 40 CFR part 423 Appendix A, and 40
CFR 131.36]
    (f) Removing the CAA HAP statutory Code ``3'' for Methyl ethyl
ketone (CASRN 78-93-3), its entry under F005, and its synonyms: 2-
Butanone and MEK. This technical correction is being made because
Methyl ethyl ketone was removed from the list of HAPs. [70 FR 75047,
December 19, 2005]
    (g) Removing the RCRA Hazardous Waste Code ``4'' and the RCRA waste
number ``U204'' from Selenium oxide (CASRN 12640-89-0). These technical
corrections are due to a technical error. Selenium oxide is not
considered a RCRA Hazardous Waste. [40 CFR part 261 subpart D]
    (h) Adding the RCRA Hazardous Waste Code ``4'' for ``4,4'-DDE''
(72-55-9) and its synonym ``DDE.'' This technical correction is due to
a clerical error. 4,4-DDE is a RCRA Hazardous Waste. [40 CFR part 261
subpart D]
    (i) Adding CASRNs for ``Chlordane, alpha & gamma isomers'' (5103-
71-9) and (5103-74-2), Dichlorobenzidine (1331-47-1), Diphenylhydrazine
(38622-18-3), and Nitrophenols (25154-55-6). These CASRNs are provided
in Table 302.4 and Appendix A to Table 302.4 to facilitate
identification of substances.
    (j) Correcting CASRNs for the following substances: Updating
``Arsenic disulfide'' 1303-32-8 to 12044-79-0; removing ``Chromic
acid'' 11115-74-5 as it has been replaced with 7738-94-5, which is
already listed; updating ``Cupric oxalate'' 5893-66-3 to 55671-32-4;
and removing ``Lead stearate'' 52652-59-2 as it has been replaced with
56189-09-4, which is already listed. These technical corrections align
Table 302.4 with the current CASRNs for these substances.
    (k) Reordering the following hazardous substances, that are names
of categories of chemicals, prior to the names of hazardous substances
that fit into these broader categories: ``ANTIMONY AND COMPOUNDS'',
``Antimony Compounds'', ``Aroclors'', ``ARSENIC AND COMPOUNDS'',
``Arsenic Compounds (inorganic including arsenic)'', ``BERYLLIUM AND
COMPOUNDS'', ``CADMIUM AND COMPOUNDS'', ``CHLORDANE (TECHNICAL MIXTURE
AND METABOLITES)'', ``CHROMIUM AND COMPOUNDS'', ``Chromium Compounds'',
``COPPER AND COMPOUNDS'', ``CYANIDES'', ``ENDOSULFAN AND METABOLITES'',
``ENDRIN AND METABOLITES'', ``HEPTACHLOR AND METABOLITES'', ``LEAD AND
COMPOUNDS'', ``MERCURY AND COMPOUNDS'', ``Mercury Compounds'', ``NICKEL
AND COMPOUNDS'', ``NITROPHENOLS'', ``SELENIUM AND COMPOUNDS'',
``Selenium Compounds'', ``SILVER AND COMPOUNDS'', ``THALLIUM AND

COMPOUNDS'', ``Xylene (mixed)'', ``Xylenes (isomers and mixture)'', and
``ZINC AND COMPOUNDS''. These technical corrections make the list
easier to read.
    (l) Reordering the following hazardous substances grouped as
isomers and homologs to be in alphabetical and numerical order: 1,2-
Dichloropropane, 1,3-Dichloropropene, 2,4-Dinitrophenol, and 3,4-
Dinitrotoluene. These technical corrections make the list easier to
read.
    (m) Indenting hazardous substances that are isomers, homologs, or
formulations under their parent compounds, where they were not already
indented [Aroclors 1016, 1221, 1232, 1242, 1248, 1254, and 1260;
Cresols m-, o-, and p-; Dichlorobenzenes 1,2- (o-), 1,3- (m-), and 1,4-
(p-); 3,3-Dichlorobenzidine; Dichloropropanes 1,1- and 1,3-; 3-
Dichloropropene; 2,4-Dinitrophenol; Dinitrotoluenes 2,4- and 2,6-;
Endosulfans alpha- and beta; Nitrophenols 2- (o-) and 4- (p-);
Trichlorophenols 2,4,5- and 2,4,6-; and m-Xylenes m-, o-, and p-].
These technical corrections make the list easier to read.
    (n) Providing isomers that were already indented with the statutory
codes, RCRA waste numbers, and the reportable quantity values of their
parent hazardous substance (Amyl acetates iso-, sec-, and tert-; Butyl
acetates iso-, sec-, and tert-; Butylamines iso-, sec-, and tert-; iso-
Butyric acid, 2,3-Dichloropropene; Dinitrobenzenes m-, o-, and p-;
Dinitrophenols 2,5- and 2,6-; 3,4-Dinitrotoluene; m-Nitrophenol;
Nitrotoluenes m-, o-, and p-; and Trichlorophenols 2,3,4-, 2,3,5-,
2,3,6-, and 3,4,5-). These technical corrections make the list easier
to read.
    (o) Reformatting the CASRNs to add hyphens where they are missing.
Hyphens were added to the hazardous substances in Table 302.4 on July
9, 2002 (67 FR 45316). On August 16, 2016 (71 FR 47106), 57 hazardous
substances were added to Table 302.4 without hyphens. Adding hyphens to
the CASRNs for those 57 hazardous substances as follows: A2213 (30558-
43-1); Aldicarb sulfone (1646-88-4); Barban (101-27-9); Bendiocarb
(22781-23-3); Bendiocarb phenol (22961-82-6); Benomyl (17804-35-2);
1,3-Benzodioxol-4-ol, 2,2-dimethyl- (22961-82-6); 1,3-Benzodioxol-4-ol,
2,2-dimethyl-, methyl carbamate (22781-23-3); 7-Benzofuranol, 2,3-
dihydro-2,2-dimethyl- (1563-38-8); Benzoic acid, 2-hydroxy-, compd.
with (3aS-cis)-1,2,3,3a,8,8a-hexahydro-1,3a,8-trimethylpyrrolo[2,3-
b]indol-5-yl methylcarbamate ester (1:1) (57-64-7); Carbamic acid, 1H-
benzimidazol-2-yl, methyl ester (10605-21-7); Carbamic acid, [1-
[(butylamino)carbonyl]-1H-benzimidazol-2-yl]-,methyl ester (17804-35-
2); Carbamic acid, (3-chlorophenyl)-, 4-chloro-2-butynyl ester (101-27-
9); Carbamic acid, [(dibutylamino)-thio]methyl-, 2,3-dihydro-2,2-
dimethyl-7-benzofuranyl ester (55285-14-8); Carbamic acid, dimethyl-,1-
[(dimethyl-amino)carbonyl]-5-methyl-1H-pyrazol-3-yl ester (644-64-4);
Carbamic acid, dimethyl-, 3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl
ester (119-38-0); Carbamic acid, methyl-, 3-methylphenyl ester (1129-
41-5); Carbamic acid, [1,2-phenylenebis(iminocarbonothioyl)]bis-,
dimethyl ester (23564-05-8); Carbamic acid, phenyl-, 1-methylethyl
ester (122-42-9); Carbamothioic acid, bis(1-methylethyl)-, S-(2,3,3-
trichloro-2-propenyl) ester (2303-17-5); Carbamothioic acid, dipropyl-,
S-(phenylmethyl) ester (52888-80-9); Carbendazim (10605-21-7);
Carbofuran phenol (1563-38-8); Carbosulfan (55285-14-8); m-Cumenyl
methylcarbamate (64-00-6); Diethylene glycol, dicarbamate (5952-26-1);
Dimetilan (644-64-4); 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-,
O-[(methylamino)-carbonyl]oxime (26419-73-8); Ethanimidothioic acid, 2-
(dimethylamino)-N-hydroxy-2-oxo-, methyl ester (30558-43-1);
Ethanimidothioic acid, 2-(dimethylamino)-N-
[[(methylamino)carbonyl]oxy]-2-oxo-, methyl ester (23135-22-0);
Ethanimidothioic acid, N,N'- [thiobis[(methylimino) carbonyloxy]]bis-,
dimethyl ester (59669-26-0); Ethanol, 2,2'-oxybis-, dicarbamate (5952-
26-1); Formetanate hydrochloride (23422-53-9); Formparanate (17702-57-
7); Isolan (119-38-0); 3-Isopropylphenyl N-methylcarbamate (64-00-6);
Manganese, bis (dimethylcarbamodithioato-S,S')- (15339-36-3); Manganese
dimethyldithiocarbamate (15339-36-3); Methanimidamide, N,N-dimethyl-N'-
[3-[[(methylamino)-carbonyl]oxy]phenyl]-, monohydrochloride (23422-53-
9); Methanimidamide, N,N-dimethyl-N'-[2-methyl-4- [[(methylamino)
carbonyl]oxy]phenyl]- (17702-57-7); Metolcarb (1129-41-5); Oxamyl
(23135-22-0); Phenol, 3-(1-methylethyl)-, methyl carbamate (64-00-6);
Phenol, 3-methyl-5-(1-methylethyl)-, methyl carbamate (2631-37-0);
Physostigmine (57-47-6); Physostigmine salicylate (57-64-7); Promecarb
(2631-37-0); Propanal, 2-methyl-2-(methyl- sulfonyl)-, O-
[(methylamino)carbonyl] oxime (1646-88-4); Propham (122-42-9);
Prosulfocarb (52888-80-9); Pyrrolo[2,3-b]indol-5-ol, 1,2,3,3a,8,8a-
hexahydro-1,3a,8-trimethyl-, methylcarbamate (ester), (3aS-cis)- (57-
47-6); Thiodicarb (59669-26-0); Thiophanate-methyl (23564-05-8);
Tirpate (26419-73-8); Triallate (2303-17-5); Zinc,
bis(dimethylcarbamodithioato-S,S')- (137-30-4); and Ziram (137-30-4).
Also, the EPA is updating the entire Appendix A to Table 302.4 to add
the CASRNs throughout the appendix. These technical corrections make
the list easier to read.
    (p) Removing the duplicate entries for Zinc cyanide (CASRN 557-21-
1) and ``Phenol, 3-(1-methylethyl)-, methyl carbamate (m-Cumenyl
methylcarbamate)'' (CASRN 64-00-6) from Appendix A to Table Sec.
302.4. This is a technical correction to make the list easier to read.
    (q) Moving the Final RQ for Propionaldehyde (CASRN 123-38-6) ``1000
(454)'' from the ``RCRA waste No.'' column to the ``Final RQ [pounds
(kg)]'' column. This technical correction is being made due to a
clerical error that placed the value in the wrong column.
    (r) Removing ``1,2,4'' from the Final RQ column in Table 302.4 for
Titanium tetrachloride (CASRN 7550-45-0). This technical correction is
being made due to a clerical error, these values do not belong in this
column, nor are they statutory codes for this hazardous substance.
    (s) Correcting the spelling of ``Dichloromethoxy ethane'' from
``Dichloromethoxyethane'' to be consistent with the listing for the
substance as a RCRA Hazardous Waste. [40 CFR part 261 subpart D]
    In addition to these technical amendments, the EPA is making six
other technical corrections:
    (1) Revising the heading title of 40 CFR 302.4 from ``Designation
of Hazardous Substances'' to ``Hazardous Substances and Reportable
Quantities.'' This technical correction to the title accurately
represents the contents of the section; section 302.4 does not
designate hazardous substances, but rather provides a list of hazardous
substances as defined by the statute [CERCLA 101(14)].
    (2) Revising the language in the note preceding Table 302.4 to add
guidance on the applicability of the CASRNs that are provided in Table
302.4 and to provide citations to the regulatory lists that comprise
the table, in addition to their statutory sources. These technical
corrections are being made to provide a clear understanding of the
usefulness of CASRNs and to provide a direct reference for users of the
lists that comprise Table 302.4.

    (3) Deleting one of the duplicate notes with the single dagger note
symbol ([dagger]). This technical correction is being made due to a
clerical error.
    (4) Replacing the dagger note symbols ([dagger], [dagger][dagger],
and [dagger][dagger][dagger]) with roman numeric superscripts (\II\,
\III\, and \IV\). This technical correction is being made to allow for
the addition of notes and to make the notes easier to identify and
read.
    (5) Revising the language in the note preceding Table 302.4 to
provide a clarifying statement regarding CASRN limitations, adding the
numeric note reference symbol ``\I\'' to the header for ``CASRN,'' and
adding the numeric note reference ``\II\'' to the notes at the end of
the table. These technical corrections are being made to clarify the
limitations of CASRNs.
    (6) Revising the header ``Final RQ pounds (Kg)'' to ``Final RQ
[pounds (kg)].'' This technical correction is being made to add clarity
to the table by separating the title of the column from the units of
the values within the column.

III. Rulemaking Procedures and Findings of Good Cause

    Section 553 of the Administrative Procedure Act (APA), 5 U.S.C.
553(b)(3)(B), provides that, when an agency for good cause finds that
notice and public procedure are impracticable, unnecessary, or contrary
to the public interest, the agency may issue a final rule without
providing notice and an opportunity for public comment. EPA has
determined that there is good cause for making this technical amendment
final without prior proposal and opportunity for comment, because such
notice and opportunity for comment is unnecessary for the following two
reasons. First, 40 CFR 302.4 contains substances that are listed or
designated as provided in CERCLA section 101(14). [48 FR 23554, May 25,
1983] These statutory provisions are currently (1) CWA Hazardous
Substances, (2) CWA Toxic Pollutants, (3) CAA HAPs, and (4) RCRA
Hazardous Wastes. Technically, once substances are added to or removed
under these four statutory provisions, they are automatically
considered or not considered as CERCLA hazardous substances. Of note,
no revisions or changes are being made in this action under CERCLA
section 9602 listing authority. Therefore, the addition and removal of
substances from 40 CFR 302.4 is merely administrative and does not
affect any substantive requirements. Secondly, the other modifications
in this action are minor and non-substantive technical corrections. EPA
finds that this constitutes good cause under 5 U.S.C. 553(b)(3)(B).

IV. Effective Date

    Section 553(d)(3) of the APA provides that final rules shall not
become effective until 30 days after publication in the Federal
Register ``except . . . as otherwise provided by the Agency for good
cause.'' The purpose of this provision is to ``give affected parties a
reasonable time to adjust their behavior before the final rule takes
effect.'' Omnipoint Corp. v. Fed. Commc'n Comm'n, 78 F.3d 620, 630
(D.C. Cir. 1996); see also United States v. Gavrilovic, 551 F.2d 1099,
1104 (8th Cir. 1977) (quoting legislative history). Thus, in
determining whether good cause exists to waive the 30-day delay, an
agency should ``balance the necessity for immediate implementation
against principles of fundamental fairness which require that all
affected persons be afforded a reasonable amount of time to prepare for
the effective date of its ruling.'' Gavrilovic, 551 F.2d at 1105. EPA
has determined that there is good cause for making this final rule
effective immediately because it merely modifies 40 CFR 302.4 to be
consistent with the list of substances from the statutes it is
comprised of, corrects CASRN numbers to be accurate, and adjusts the
formatting to make the lists easier to read. For this reason, the
Agency finds that good cause exists under APA section 553(d)(3) to make
this rule effective immediately upon publication.

V. Do any of the statutory and Executive Order reviews apply to this
action?

    Under Executive Order 12866 (58 FR 51735, October 4, 1993) and
Executive Order 13563 (76 FR 3821, January 21, 2011), this action is
not a ``significant regulatory action'' and is therefore not subject to
the Office of Management and Budget (OMB) review. Additionally, this
action is not an Executive Order 13771 regulatory action because this
action is not significant under Executive Order 12866. Because this
action is not subject to notice and comment requirements under the
Administrative Procedure Act or any other statute, it is not subject to
the Regulatory Flexibility Act (5 U.S.C. 601 et seq.) or Sections 202
and 205 of the Unfunded Mandates Reform Act (2 U.S.C. 1531-1538). In
addition, this action does not significantly or uniquely affect small
governments. This action does not create new binding legal requirements
that substantially and directly affect tribes under Executive Order
13175 (65 FR 67249, November 9, 2000). This action does not have
significant Federalism implications under Executive Order 13132 (64 FR
43255, August 10, 1999). Because this final rule is not subject to
review under Executive Order 12866, this final rule is not subject to
Executive Order 13211, entitled, ``Actions Concerning Regulations That
Significantly Affect Energy Supply, Distribution, or Use'' (66 FR
28355, May 22, 2001) or Executive Order 13045, entitled, ``Protection
of Children from Environmental Health Risks and Safety Risks'' (62 FR
19885, April 23, 1997). Continuous release reporting is covered under
OMB Control Number 2050-0086. This final rule does not contain any
changes to the information collections subject to OMB approval under
the Paperwork Reduction Act (PRA), 44 U.S.C. 3501 et seq., nor does it
require any special considerations under Executive Order 12898,
entitled, ``Federal Actions to Address Environmental Justice in
Minority Populations and Low-Income Populations'' (59 FR 7629, February
16, 1994). This action does not involve technical standards; thus, the
requirements of Section 12(d) of the National Technology Transfer and
Advancement Act of 1995 (15 U.S.C. 272 note) do not apply.
    This action is subject to the Congressional Review Act (CRA), and
the EPA will submit a rule report to each House of Congress and to the
Comptroller General of the United States. The CRA allows the issuing
agency to make a rule effective sooner than otherwise provided by the
CRA if the agency makes a good cause finding that notice and comment
rulemaking procedures are impracticable, unnecessary, or contrary to
the public interest (5 U.S.C. 808(2)). The EPA has made a good cause
finding for this rule as discussed in Section III of the preamble,
including the basis for that finding.

List of Subjects for 40 CFR Part 302

    Environmental protection, Air Pollution control, Chemicals,
Hazardous substances, Hazardous wastes, Water pollution control.

    Dated: March 31, 2022.
Barry N. Breen,
Acting Assistant Administrator, Office of Land and Emergency
Management.

    For the reasons stated in the preamble, the EPA amends title 40,
chapter I of the Code of Federal Regulations as follows:

PART 302--DESIGNATION, REPORTABLE QUANTITIES, AND NOTIFICATION

0
1. The authority citation for Part 302 continues to read as follows:

    Authority:  33 U.S.C. 1251 et seq., 42 U.S.C. 9601 et seq., 42
U.S.C. 9602, 42 U.S.C. 9603.

0
2. Amend Sec.  302.4 by:
0
a. Revising the section heading;
0
b. Removing the ``note'' after Paragraph (b)
0
c. Adding Notes I and II to Table 302.4;
0
d. Revising Table 302.4;
0
e. Revising Appendix A to Sec.  302.4--Sequential CAS Registry Number
List of CERCLA Hazardous Substances.
    The revisions and additions read as follows:

Sec.  302.4   Hazardous substances and reportable quantities.

* * * * *

Note I to Table 302.4

    The numbers under the column headed ``CASRN'' are the Chemical
Abstracts Service Registry Numbers for each hazardous substance. CASRNs
are unique numeric identifiers for specific substances. CASRNs are
updated by the Chemical Abstract Service and are sometimes deleted or
replaced. This list of CERCLA hazardous substances relies on
information provided in the statutory lists that comprise the table.
CASRNs are provided for convenience only to aid in the identification
of the designated hazardous substance. Some CASRNs are given only for
parent compounds. In some cases, a chemical name may have more than one
CASRN associated with it due to the chemical's various forms; however,
each CAS Registry Number is a unique numeric identifier and designates
only one substance. That is, two substances, or two forms of a
substance, do not have the same CAS Registry Number. If there is a
discrepancy between the hazardous substance name and the listed CAS
Registry Number, the hazardous substance names appearing in Table 302.4
should be used as the official means to determine if a given chemical
or substance is reportable.

Note II to Table 302.4

    Hazardous substances are given a Statutory Code based on their
statutory source. The ``Statutory Code'' column indicates the statutory
source for designating each substance as a CERCLA hazardous substance.
Statutory Code ``1'' indicates a Clean Water Act (CWA) Hazardous
Substance [40 CFR 116.4; 33 U.S.C. 1321(b)(2)(A)]. Statutory Code ``2''
indicates a CWA Toxic Pollutant [40 CFR 401.15, 40 CFR part 423
Appendix A, and/or 40 CFR 131.36; 33 U.S.C. 1317(a)]. Statutory Code
``3'' indicates a CAA HAP [42 U.S.C. 7412(b); Pub. L. 101-549 November
15, 1990; 70 FR 75047 December 19, 2005; 69 FR 69320 November 29, 2004;
61 FR 30816 June 18, 1996; 65 FR 47342 August 2, 2000; 87 FR 393
January 5, 2022]. Statutory Code ``4'' indicates Resource Conservation
and Recovery Act (RCRA) Hazardous Wastes [40 CFR part 261 Subpart D--
Lists of Hazardous Wastes; 42 U.S.C. 6921]. The ``RCRA waste No.''
column provides the waste identification numbers assigned by RCRA
regulations. The ``Final RQ [pounds (kg)]'' column provides the
reportable quantity for each hazardous substance in pounds and
kilograms.

                       Table 302.4--List of Hazardous Substances and Reportable Quantities
                            [All comments/notes are located at the end of the table.]
----------------------------------------------------------------------------------------------------------------
                                                           Statutory                                 Final RQ
           Hazardous substance               CASRN \I\     code \II\        RCRA  waste No.       [pounds (kg)]
----------------------------------------------------------------------------------------------------------------
A2213...................................      30558-43-1            4  U394....................      5000 (2270)
Acenaphthene............................         83-32-9            2  ........................       100 (45.4)
Acenaphthylene..........................        208-96-8            2  ........................      5000 (2270)
Acetaldehyde............................         75-07-0        1,3,4  U001....................       1000 (454)
Acetaldehyde, chloro-...................        107-20-0            4  P023....................       1000 (454)
Acetaldehyde, trichloro-................         75-87-6            4  U034....................      5000 (2270)
Acetamide...............................         60-35-5            3  ........................       100 (45.4)
Acetamide, N-(aminothioxomethyl)-.......        591-08-2            4  P002....................       1000 (454)
Acetamide, N-(4-ethoxyphenyl)-..........         62-44-2            4  U187....................       100 (45.4)
Acetamide, N-9H-fluoren-2-yl-...........         53-96-3          3,4  U005....................        1 (0.454)
Acetamide, 2-fluoro-....................        640-19-7            4  P057....................       100 (45.4)
Acetic acid.............................         64-19-7            1  ........................      5000 (2270)
Acetic acid, (2,4-dichlorophenoxy)-,             94-75-7        1,3,4  U240....................       100 (45.4)
 salts & esters.
Acetic acid, ethyl ester................        141-78-6            4  U112....................      5000 (2270)
Acetic acid, fluoro-, sodium salt.......         62-74-8            4  P058....................        10 (4.54)
Acetic acid, lead(2 +) salt.............        301-04-2          1,4  U144....................        10 (4.54)
Acetic acid, thallium(1 +) salt.........        563-68-8            4  U214....................       100 (45.4)
Acetic acid, (2,4,5-trichlorophenoxy)-..         93-76-5          1,4  See F027................       1000 (454)
Acetic anhydride........................        108-24-7            1  ........................      5000 (2270)
Acetone.................................         67-64-1            4  U002....................      5000 (2270)
Acetone cyanohydrin.....................         75-86-5          1,4  P069....................        10 (4.54)
Acetonitrile............................         75-05-8          3,4  U003....................      5000 (2270)
Acetophenone............................         98-86-2          3,4  U004....................      5000 (2270)
2-Acetylaminofluorene...................         53-96-3          3,4  U005....................        1 (0.454)
Acetyl bromide..........................        506-96-7            1  ........................      5000 (2270)
Acetyl chloride.........................         75-36-5          1,4  U006....................      5000 (2270)
1-Acetyl-2-thiourea.....................        591-08-2            4  P002....................       1000 (454)
Acrolein................................        107-02-8      1,2,3,4  P003....................        1 (0.454)
Acrylamide..............................         79-06-1          3,4  U007....................      5000 (2270)
Acrylic acid............................         79-10-7          3,4  U008....................      5000 (2270)
Acrylonitrile...........................        107-13-1      1,2,3,4  U009....................       100 (45.4)
Adipic acid.............................        124-04-9            1  ........................      5000 (2270)
Aldicarb................................        116-06-3            4  P070....................        1 (0.454)
Aldicarb sulfone........................       1646-88-4            4  P203....................       100 (45.4)
Aldrin..................................        309-00-2        1,2,4  P004....................        1 (0.454)
Allyl alcohol...........................        107-18-6          1,4  P005....................       100 (45.4)
Allyl chloride..........................        107-05-1          1,3  ........................       1000 (454)
Aluminum phosphide......................      20859-73-8            4  P006....................       100 (45.4)
Aluminum sulfate........................      10043-01-3            1  ........................      5000 (2270)
4-Aminobiphenyl.........................         92-67-1            3  ........................        1 (0.454)

5-(Aminomethyl)-3-isoxazolol............       2763-96-4            4  P007....................       1000 (454)
4-Aminopyridine.........................        504-24-5            4  P008....................       1000 (454)
Amitrole................................         61-82-5            4  U011....................        10 (4.54)
Ammonia.................................       7664-41-7            1  ........................       100 (45.4)
Ammonium acetate........................        631-61-8            1  ........................      5000 (2270)
Ammonium benzoate.......................       1863-63-4            1  ........................      5000 (2270)
Ammonium bicarbonate....................       1066-33-7            1  ........................      5000 (2270)
Ammonium bichromate.....................       7789-09-5            1  ........................        10 (4.54)
Ammonium bifluoride.....................       1341-49-7            1  ........................       100 (45.4)
Ammonium bisulfilte.....................      10192-30-0            1  ........................      5000 (2270)
Ammonium carbamate......................       1111-78-0            1  ........................      5000 (2270)
Ammonium carbonate......................        506-87-6            1  ........................      5000 (2270)
Ammonium chloride.......................      12125-02-9            1  ........................      5000 (2270)
Ammonium chromate.......................       7788-98-9            1  ........................        10 (4.54)
Ammonium citrate, dibasic...............       3012-65-5            1  ........................      5000 (2270)
Ammonium fluoborate.....................      13826-83-0            1  ........................      5000 (2270)
Ammonium fluoride.......................      12125-01-8            1  ........................       100 (45.4)
Ammonium hydroxide......................       1336-21-6            1  ........................       1000 (454)
Ammonium oxalate........................       6009-70-7            1  ........................      5000 (2270)
                                               5972-73-6
                                              14258-49-2
Ammonium picrate........................        131-74-8            4  P009....................        10 (4.54)
Ammonium silicofluoride.................      16919-19-0            1  ........................       1000 (454)
Ammonium sulfamate......................       7773-06-0            1  ........................      5000 (2270)
Ammonium sulfide........................      12135-76-1            1  ........................       100 (45.4)
Ammonium sulfite........................      10196-04-0            1  ........................      5000 (2270)
Ammonium tartrate.......................      14307-43-8            1  ........................      5000 (2270)
                                               3164-29-2
Ammonium thiocyanate....................       1762-95-4            1  ........................      5000 (2270)
Ammonium vanadate.......................       7803-55-6            4  P119....................       1000 (454)
Amyl acetate............................        628-63-7            1  ........................      5000 (2270)
    iso-Amyl acetate....................        123-92-2            1  ........................      5000 (2270)
    sec-Amyl acetate....................        626-38-0            1  ........................      5000 (2270)
    tert-Amyl acetate...................        625-16-1            1  ........................      5000 (2270)
Aniline.................................         62-53-3        1,3,4  U012....................      5000 (2270)
o-Anisidine.............................         90-04-0            3  ........................       100 (45.4)
Anthracene..............................        120-12-7            2  ........................      5000 (2270)
ANTIMONY AND COMPOUNDS..................            N.A.          2,3  ........................               **
Antimony Compounds......................            N.A.          2,3  ........................               **
Antimony \III\..........................       7440-36-0            2  ........................      5000 (2270)
Antimony pentachloride..................       7647-18-9            1  ........................       1000 (454)
Antimony potassium tartrate.............      28300-74-5            1  ........................       100 (45.4)
Antimony tribromide.....................       7789-61-9            1  ........................       1000 (454)
Antimony trichloride....................      10025-91-9            1  ........................       1000 (454)
Antimony trifluoride....................       7783-56-4            1  ........................       1000 (454)
Antimony trioxide.......................       1309-64-4            1  ........................       1000 (454)
Argentate(1-), bis(cyano-C)-, potassium.        506-61-6            4  P099....................        1 (0.454)
Aroclors................................       1336-36-3        1,2,3  ........................        1 (0.454)
    Aroclor 1016........................      12674-11-2        1,2,3  ........................        1 (0.454)
    Aroclor 1221........................      11104-28-2        1,2,3  ........................        1 (0.454)
    Aroclor 1232........................      11141-16-5        1,2,3  ........................        1 (0.454)
    Aroclor 1242........................      53469-21-9        1,2,3  ........................        1 (0.454)
    Aroclor 1248........................      12672-29-6        1,2,3  ........................        1 (0.454)
    Aroclor 1254........................      11097-69-1        1,2,3  ........................        1 (0.454)
    Aroclor 1260........................      11096-82-5        1,2,3  ........................        1 (0.454)
ARSENIC AND COMPOUNDS...................            N.A.          2,3  ........................               **
Arsenic Compounds (inorganic including              N.A.          2,3  ........................               **
 arsine).
Arsenic \III\...........................       7440-38-2          2,3  ........................        1 (0.454)
Arsenic acid H3AsO4.....................       7778-39-4            4  P010....................        1 (0.454)
Arsenic disulfide.......................      12044-79-0            1  ........................        1 (0.454)
Arsenic oxide As2O3.....................       1327-53-3          1,4  P012....................        1 (0.454)
Arsenic oxide As2O5.....................       1303-28-2          1,4  P011....................        1 (0.454)
Arsenic pentoxide.......................       1303-28-2          1,4  P011....................        1 (0.454)
Arsenic trichloride.....................       7784-34-1            1  ........................        1 (0.454)
Arsenic trioxide........................       1327-53-3          1,4  P012....................        1 (0.454)
Arsenic trisulfide......................       1303-33-9            1  ........................        1 (0.454)
Arsine, diethyl-........................        692-42-2            4  P038....................        1 (0.454)
Arsinic acid, dimethyl-.................         75-60-5            4  U136....................        1 (0.454)
Arsonous dichloride, phenyl-............        696-28-6            4  P036....................        1 (0.454)
Asbestos \IV\...........................       1332-21-4          2,3  ........................        1 (0.454)
Auramine................................        492-80-8            4  U014....................       100 (45.4)
Azaserine...............................        115-02-6            4  U015....................        1 (0.454)
Aziridine...............................        151-56-4          3,4  P054....................        1 (0.454)
Aziridine, 2-methyl-....................         75-55-8          3,4  P067....................        1 (0.454)
Azirino[2',3':3,4]pyrrolo[1,2-a]indole-          50-07-7            4  U010....................        10 (4.54)
 4,7-dione, 6-amino-8-
 [[(aminocarbonyl)oxy]methyl]-
 1,1a,2,8,8a,8b- hexahydro-8a-methoxy-5-
 methyl-,[1aS- (1aalpha,8beta,8aalpha,
 8balpha)]-.
Barban..................................        101-27-9            4  U280....................        10 (4.54)
Barium cyanide..........................        542-62-1          1,4  P013....................        10 (4.54)
Bendiocarb..............................      22781-23-3            4  U278....................       100 (45.4)

Bendiocarb phenol.......................      22961-82-6            4  U364....................       1000 (454)
Benomyl.................................      17804-35-2            4  U271....................        10 (4.54)
Benz[j]aceanthrylene, 1,2-dihydro-3-             56-49-5            4  U157....................        10 (4.54)
 methyl-.
Benz[c]acridine.........................        225-51-4            4  U016....................       100 (45.4)
Benzal chloride.........................         98-87-3            4  U017....................      5000 (2270)
Benzamide, 3,5-dichloro-N-(1,1-dimethyl-      23950-58-5            4  U192....................      5000 (2270)
 2propynyl)-.
Benz[a]anthracene.......................         56-55-3          2,4  U018....................        10 (4.54)
1,2-Benzanthracene......................         56-55-3          2,4  U018....................        10 (4.54)
Benz[a]anthracene, 7,12-dimethyl-.......         57-97-6            4  U094....................        1 (0.454)
Benzenamine.............................         62-53-3        1,3,4  U012....................      5000 (2270)
Benzenamine, 4,4'-carbonimidoylbis (N,N         492-80-8            4  U014....................       100 (45.4)
 dimethyl-.
Benzenamine, 4-chloro-..................        106-47-8            4  P024....................       1000 (454)
Benzenamine, 4-chloro-2-methyl-,               3165-93-3            4  U049....................       100 (45.4)
 hydrochloride.
Benzenamine, N,N-dimethyl-4-(phenylazo)-         60-11-7          3,4  U093....................        10 (4.54)
Benzenamine, 2-methyl-..................         95-53-4          3,4  U328....................       100 (45.4)
Benzenamine, 4-methyl-..................        106-49-0            4  U353....................       100 (45.4)
Benzenamine, 4,4'-methylenebis [2-chloro-       101-14-4          3,4  U158....................        10 (4.54)
 .
Benzenamine, 2-methyl-,hydrochloride....        636-21-5            4  U222....................       100 (45.4)
Benzenamine, 2-methyl-5-nitro-..........         99-55-8            4  U181....................       100 (45.4)
Benzenamine, 4-nitro-...................        100-01-6            4  P077....................      5000 (2270)
Benzene \a\.............................         71-43-2      1,2,3,4  U019....................        10 (4.54)
Benzeneacetic acid, 4-chloro-[alpha]-(4-        510-15-6          3,4  U038....................        10 (4.54)
 chlorophenyl)-[alpha]-hydroxy-, ethyl
 ester.
Benzene, 1-bromo-4-phenoxy-.............        101-55-3          2,4  U030....................       100 (45.4)
Benzenebutanoic acid, 4-[bis(2-                 305-03-3            4  U035....................        10 (4.54)
 chloroethyl)amino]-.
Benzene, chloro-........................        108-90-7      1,2,3,4  U037....................       100 (45.4)
Benzene, (chloromethyl)-................        100-44-7        1,3,4  P028....................       100 (45.4)
Benzenediamine, ar-methyl-..............         95-80-7          3,4  U221....................        10 (4.54)
                                                496-72-0
                                                823-40-5
                                              25376-45-8
1,2-Benzenedicarboxylic acid, bis(2-            117-81-7        2,3,4  U028....................       100 (45.4)
 ethylhexyl) ester.
1,2-Benzenedicarboxylic acid, dibutyl            84-74-2      1,2,3,4  U069....................        10 (4.54)
 ester.
1,2-Benzenedicarboxylic acid, diethyl            84-66-2          2,4  U088....................       1000 (454)
 ester.
1,2-Benzenedicarboxylic acid, dimethyl          131-11-3        2,3,4  U102....................      5000 (2270)
 ester.
1,2-Benzenedicarboxylic acid, dioctyl           117-84-0          2,4  U107....................      5000 (2270)
 ester.
Benzene, 1,2-dichloro-..................         95-50-1        1,2,4  U070....................       100 (45.4)
Benzene, 1,3-dichloro-..................        541-73-1          2,4  U071....................       100 (45.4)
Benzene, 1,4-dichloro-..................        106-46-7      1,2,3,4  U072....................       100 (45.4)
Benzene, 1,1'-(2,2-dichloroethylidene)           72-54-8        1,2,4  U060....................        1 (0.454)
 bis[4-chloro-.
Benzene, (dichloromethyl)-..............         98-87-3            4  U017....................      5000 (2270)
Benzene, 1,3-diisocyanatomethyl-........         91-08-7          3,4  U223....................       100 (45.4)
                                                584-84-9
                                              26471-62-5
Benzene, dimethyl-......................       1330-20-7        1,3,4  U239....................       100 (45.4)
1,3-Benzenediol.........................        108-46-3          1,4  U201....................      5000 (2270)
1,2-Benzenediol,4-[1-hydroxy-2-(methyl           51-43-4            4  P042....................       1000 (454)
 amino)ethyl]-.
Benzeneethanamine, alpha,alpha-dimethyl-        122-09-8            4  P046....................      5000 (2270)
Benzene, hexachloro-....................        118-74-1        2,3,4  U127....................        10 (4.54)
Benzene, hexahydro-.....................        110-82-7          1,4  U056....................       1000 (454)
Benzene, methyl-........................        108-88-3      1,2,3,4  U220....................       1000 (454)
Benzene, 1-methyl-2,4-dinitro-..........        121-14-2      1,2,3,4  U105....................        10 (4.54)
Benzene, 2-methyl-1,3-dinitro-..........        606-20-2        1,2,4  U106....................       100 (45.4)
Benzene, (1-methylethyl)-...............         98-82-8          3,4  U055....................      5000 (2270)
Benzene, nitro-.........................         98-95-3      1,2,3,4  U169....................       1000 (454)
Benzene, pentachloro-...................        608-93-5            4  U183....................        10 (4.54)
Benzene, pentachloronitro-..............         82-68-8          3,4  U185....................       100 (45.4)
Benzenesulfonic acid chloride...........         98-09-9            4  U020....................       100 (45.4)
Benzenesulfonyl chloride................         98-09-9            4  U020....................       100 (45.4)
Benzene,1,2,4,5-tetrachloro-............         95-94-3            4  U207....................      5000 (2270)
Benzenethiol............................        108-98-5            4  P014....................       100 (45.4)
Benzene,1,1'-(2,2,2-trichloroethylidene)         50-29-3        1,2,4  U061....................        1 (0.454)
 bis[4-chloro-.
Benzene,1,1'-(2,2,2-trichloroethylidene)         72-43-5        1,3,4  U247....................        1 (0.454)
 bis[4-methoxy-.
Benzene, (trichloromethyl)-.............         98-07-7          3,4  U023....................        10 (4.54)
Benzene, 1,3,5-trinitro-................         99-35-4            4  U234....................        10 (4.54)
Benzidine...............................         92-87-5        2,3,4  U021....................        1 (0.454)
Benzo[a]anthracene......................         56-55-3          2,4  U018....................        10 (4.54)
1,3-Benzodioxole, 5-(1-propenyl)-1......        120-58-1            4  U141....................       100 (45.4)
1,3-Benzodioxole, 5-(2-propenyl)-.......         94-59-7            4  U203....................       100 (45.4)
1,3-Benzodioxole, 5-propyl-.............         94-58-6            4  U090....................        10 (4.54)
1,3-Benzodioxol-4-ol, 2,2-dimethyl-.....      22961-82-6            4  U364....................       1000 (454)
1,3-Benzodioxol-4-ol, 2,2-dimethyl-,          22781-23-3            4  U278....................       100 (45.4)
 methyl carbamate.
Benzo[b]fluoranthene....................        205-99-2            2  ........................        1 (0.454)
Benzo(k)fluoranthene....................        207-08-9            2  ........................      5000 (2270)
7-Benzofuranol, 2,3-dihydro-2,2-dimethyl-      1563-38-8            4  U367....................        10 (4.54)
 .
7-Benzofuranol, 2,3-dihydro-2,2-               1563-66-2          1,4  P127....................        10 (4.54)
 dimethyl-, methylcarbamate.
Benzoic acid............................         65-85-0            1  ........................      5000 (2270)
Benzoic acid, 2-hydroxy-, compd. with            57-64-7            4  P188....................       100 (45.4)
 (3aS-cis)-1,2,3,3a,8,8a-hexahydro-
 1,3a,8-trimethylpyrrolo[2,3-b]indol-5-
 yl methylcarbamate ester (1:1).
Benzonitrile............................        100-47-0            1  ........................      5000 (2270)

Benzo[rst]pentaphene....................        189-55-9            4  U064....................        10 (4.54)
Benzo[ghi]perylene......................        191-24-2            2  ........................      5000 (2270)
2H-1-Benzopyran-2-one, 4-hydroxy-3-(3-           81-81-2            4  P001....................       100 (45.4)
 oxo-1-phenylbutyl)-, & salts.                                         U248....................
Benzo[a]pyrene..........................         50-32-8          2,4  U022....................        1 (0.454)
3,4-Benzopyrene.........................         50-32-8          2,4  U022....................        1 (0.454)
[rho]-Benzoquinone......................        106-51-4          3,4  U197....................        10 (4.54)
Benzotrichloride........................         98-07-7          3,4  U023....................        10 (4.54)
Benzoyl chloride........................         98-88-4            1  ........................       1000 (454)
Benzyl chloride.........................        100-44-7        1,3,4  P028....................       100 (45.4)
BERYLLIUM AND COMPOUNDS.................            N.A.          2,3  ........................               **
Beryllium \III\.........................       7440-41-7        2,3,4  P015....................        10 (4.54)
Beryllium chloride......................       7787-47-5            1  ........................        1 (0.454)
Beryllium compounds.....................            N.A.          2,3  ........................               **
Beryllium fluoride......................       7787-49-7            1  ........................        1 (0.454)
Beryllium nitrate.......................      13597-99-4            1  ........................        1 (0.454)
                                               7787-55-5
Beryllium powder \III\..................       7440-41-7        2,3,4  P015....................        10 (4.54)
alpha-BHC...............................        319-84-6            2  ........................        10 (4.54)
beta-BHC................................        319-85-7            2  ........................        1 (0.454)
delta-BHC...............................        319-86-8            2  ........................        1 (0.454)
gamma-BHC...............................         58-89-9      1,2,3,4  U129....................        1 (0.454)
2,2'-Bioxirane..........................       1464-53-5            4  U085....................        10 (4.54)
Biphenyl................................         92-52-4            3  ........................       100 (45.4)
[1,1'-Biphenyl]-4,4'-diamine............         92-87-5        2,3,4  U021....................        1 (0.454)
[1,1'-Biphenyl]-4,4'-diamine,3,3'-               91-94-1        2,3,4  U073....................        1 (0.454)
 dichloro-.
[1,1'-Biphenyl]-4,4'-diamine,3,3'-              119-90-4          3,4  U091....................       100 (45.4)
 dimethoxy-.
[1,1'-Biphenyl]-4,4'-diamine,3,3'-              119-93-7          3,4  U095....................        10 (4.54)
 dimethyl-.
Bis(2-chloroethoxy) methane.............        111-91-1          2,4  U024....................       1000 (454)
Bis(2-chloroethyl) ether................        111-44-4        2,3,4  U025....................        10 (4.54)
Bis(chloromethyl) ether.................        542-88-1          3,4  P016....................        10 (4.54)
Bis(2-ethylhexyl) phthalate.............        117-81-7          3,4  U028....................       100 (45.4)
Bromoacetone............................        598-31-2            4  P017....................       1000 (454)
1-Bromopropane (1-BP)...................        106-94-5            3  ........................        1 (0.454)
Bromoform...............................         75-25-2        2,3,4  U225....................       100 (45.4)
Bromomethane............................         74-83-9        2,3,4  U029....................       1000 (454)
4-Bromophenyl phenyl ether..............        101-55-3          2,4  U030....................       100 (45.4)
Brucine.................................        357-57-3            4  P018....................       100 (45.4)
1,3-Butadiene...........................        106-99-0            3  ........................        10 (4.54)
1,3-Butadiene, 1,1,2,3,4,4-hexachloro-..         87-68-3        2,3,4  U128....................        1 (0.454)
1-Butanamine, N-butyl-N-nitroso-........        924-16-3            4  U172....................        10 (4.54)
1-Butanol...............................         71-36-3            4  U031....................      5000 (2270)
2-Butanone..............................         78-93-3            4  U159....................      5000 (2270)
2-Butanone, 3,3-dimethyl-1(methylthio)-,      39196-18-4            4  P045....................       100 (45.4)
 O-[(methylamino)carbonyl] oxime.
2-Butanone peroxide.....................       1338-23-4            4  U160....................        10 (4.54)
2-Butenal...............................        123-73-9          1,4  U053....................       100 (45.4)
                                               4170-30-3
2-Butene, 1,4-dichloro-.................        764-41-0            4  U074....................        1 (0.454)
2-Butenoic acid, 2-methyl-, 7-[[2,3-            303-34-4            4  U143....................        10 (4.54)
 dihydroxy-2-(1-methoxyethyl)-3- methyl-
 1-oxobutoxy] methyl]-2,3, 5,7a-
 tetrahydro- 1H-pyrrolizin-1-yl ester,
 [1S-[1alpha(Z), 7(2S*,3R*),7aalpha]]-.
Butyl acetate...........................        123-86-4            1  ........................      5000 (2270)
    iso-Butyl acetate...................        110-19-0            1  ........................      5000 (2270)
    sec-Butyl acetate...................        105-46-4            1  ........................      5000 (2270)
    tert-Butyl acetate..................        540-88-5            1  ........................      5000 (2270)
n-Butyl alcohol.........................         71-36-3            4  U031....................      5000 (2270)
Butylamine..............................        109-73-9            1  ........................       1000 (454)
    iso-Butylamine......................         78-81-9            1  ........................       1000 (454)
    sec-Butylamine......................        513-49-5            1  ........................       1000 (454)
                                              13952-84-6
    tert-Butylamine.....................         75-64-9            1  ........................       1000 (454)
Butyl benzyl phthalate..................         85-68-7            2  ........................       100 (45.4)
n-Butyl phthalate.......................         84-74-2      1,2,3,4  U069....................        10 (4.54)
Butyric acid............................        107-92-6            1  ........................      5000 (2270)
    iso-Butyric acid....................         79-31-2            1  ........................      5000 (2270)
Cacodylic acid..........................         75-60-5            4  U136....................        1 (0.454)
CADMIUM AND COMPOUNDS...................            N.A.          2,3  ........................               **
Cadmium \III\...........................       7440-43-9            2  ........................        10 (4.54)
Cadmium acetate.........................        543-90-8            1  ........................        10 (4.54)
Cadmium bromide.........................       7789-42-6            1  ........................        10 (4.54)
Cadmium chloride........................      10108-64-2            1  ........................        10 (4.54)
Cadmium compounds.......................            N.A.          2,3  ........................               **
Calcium arsenate........................       7778-44-1            1  ........................        1 (0.454)
Calcium arsenite........................      52740-16-6            1  ........................        1 (0.454)
Calcium carbide.........................         75-20-7            1  ........................        10 (4.54)
Calcium chromate........................      13765-19-0          1,4  U032....................        10 (4.54)
Calcium cyanamide.......................        156-62-7            3  ........................       1000 (454)
Calcium cyanide Ca(CN)2.................        592-01-8          1,4  P021....................        10 (4.54)
Calcium dodecylbenzenesulfonate.........      26264-06-2            1  ........................       1000 (454)
Calcium hypochlorite....................       7778-54-3            1  ........................        10 (4.54)

Captan..................................        133-06-2          1,3  ........................        10 (4.54)
Carbamic acid, 1H-benzimidazol-2-yl,          10605-21-7            4  U372....................        10 (4.54)
 methyl ester.
Carbamic acid, [1-[(butylamino)carbonyl]-     17804-35-2            4  U271....................        10 (4.54)
 1H-benzimidazol-2-yl]-,methyl ester.
Carbamic acid, (3-chlorophenyl)-, 4-            101-27-9            4  U280....................        10 (4.54)
 chloro-2-butynyl ester.
Carbamic acid, [(dibutylamino)-               55285-14-8            4  P189....................       1000 (454)
 thio]methyl-, 2,3-dihydro-2,2-dimethyl-
 7-benzofuranyl ester.
Carbamic acid, dimethyl-,1-[(dimethyl-          644-64-4            4  P191....................        1 (0.454)
 amino)carbonyl]-5-methyl-1H-pyrazol-3-
 yl ester.
Carbamic acid, dimethyl-, 3-methyl-1-(1-        119-38-0            4  P192....................       100 (45.4)
 methylethyl)-1H-pyrazol-5-yl ester.
Carbamic acid, ethyl ester..............         51-79-6          3,4  U238....................       100 (45.4)
Carbamic acid, methyl-, 3-methylphenyl         1129-41-5            4  P190....................       1000 (454)
 ester.
Carbamic acid, methylnitroso-, ethyl            615-53-2            4  U178....................        1 (0.454)
 ester.
Carbamic acid, [1,2-                          23564-05-8            4  U409....................        10 (4.54)
 phenylenebis(iminocarbonothioyl)]bis-,
 dimethyl ester.
Carbamic acid, phenyl-, 1-methylethyl           122-42-9            4  U373....................       1000 (454)
 ester.
Carbamic chloride, dimethyl-............         79-44-7          3,4  U097....................        1 (0.454)
Carbamodithioic acid, 1,2-ethanediylbis-        111-54-6            4  U114....................      5000 (2270)
 , salts & esters.
Carbamothioic acid, bis(1-methylethyl)-,       2303-16-4            4  U062....................       100 (45.4)
 S-(2,3-dichloro-2- propenyl) ester.
Carbamothioic acid, bis(1-methylethyl)-,       2303-17-5            4  U389....................       100 (45.4)
 S-(2,3,3-trichloro-2-propenyl) ester.
Carbamothioic acid, dipropyl-, S-             52888-80-9            4  U387....................      5000 (2270)
 (phenylmethyl) ester.
Carbaryl................................         63-25-2        1,3,4  U279....................       100 (45.4)
Carbendazim.............................      10605-21-7            4  U372....................        10 (4.54)
Carbofuran..............................       1563-66-2          1,4  P127....................        10 (4.54)
Carbofuran phenol.......................       1563-38-8            4  U367....................        10 (4.54)
Carbon disulfide........................         75-15-0        1,3,4  P022....................       100 (45.4)
Carbonic acid, dithallium(1 +) salt.....       6533-73-9            4  U215....................       100 (45.4)
Carbonic dichloride.....................         75-44-5        1,3,4  P095....................        10 (4.54)
Carbonic difluoride.....................        353-50-4            4  U033....................       1000 (454)
Carbonochloridic acid, methyl ester.....         79-22-1            4  U156....................       1000 (454)
Carbon oxyfluoride......................        353-50-4            4  U033....................       1000 (454)
Carbon tetrachloride....................         56-23-5      1,2,3,4  U211....................        10 (4.54)
Carbonyl sulfide........................        463-58-1            3  ........................       100 (45.4)
Carbosulfan.............................      55285-14-8            4  P189....................       1000 (454)
Catechol................................        120-80-9            3  ........................       100 (45.4)
Chloral.................................         75-87-6            4  U034....................      5000 (2270)
Chloramben..............................        133-90-4            3  ........................       100 (45.4)
Chlorambucil............................        305-03-3            4  U035....................        10 (4.54)
CHLORDANE (TECHNICAL MIXTURE AND                 57-74-9      1,2,3,4  U036....................        1 (0.454)
 METABOLITES).
Chlordane...............................         57-74-9      1,2,3,4  U036....................        1 (0.454)
Chlordane, alpha & gamma isomers........         57-74-9      1,2,3,4  U036....................        1 (0.454)
                                               5103-71-9
                                               5103-74-2
CHLORINATED BENZENES....................            N.A.            2  ........................               **
Chlorinated camphene....................       8001-35-2      1,2,3,4  P123....................        1 (0.454)
CHLORINATED ETHANES.....................            N.A.            2  ........................               **
CHLORINATED NAPHTHALENE.................            N.A.            2  ........................               **
CHLORINATED PHENOLS.....................            N.A.            2  ........................               **
Chlorine................................       7782-50-5          1,3  ........................        10 (4.54)
Chlornaphazine..........................        494-03-1            4  U026....................       100 (45.4)
Chloroacetaldehyde......................        107-20-0            4  P023....................       1000 (454)
Chloroacetic acid.......................         79-11-8            3  ........................       100 (45.4)
2-Chloroacetophenone....................        532-27-4            3  ........................       100 (45.4)
CHLOROALKYL ETHERS......................            N.A.            2  ........................               **
p-Chloroaniline.........................        106-47-8            4  P024....................       1000 (454)
Chlorobenzene...........................        108-90-7      1,2,3,4  U037....................       100 (45.4)
Chlorobenzilate.........................        510-15-6          3,4  U038....................        10 (4.54)
p-Chloro-m-cresol.......................         59-50-7          2,4  U039....................      5000 (2270)
Chlorodibromomethane....................        124-48-1            2  ........................       100 (45.4)
1-Chloro-2,3-epoxypropane...............        106-89-8        1,3,4  U041....................       100 (45.4)
Chloroethane............................         75-00-3          2,3  ........................       100 (45.4)
2-Chloroethyl vinyl ether...............        110-75-8          2,4  U042....................       1000 (454)
Chloroform..............................         67-66-3      1,2,3,4  U044....................        10 (4.54)
Chloromethane...........................         74-87-3        2,3,4  U045....................       100 (45.4)
Chloromethyl methyl ether...............        107-30-2          3,4  U046....................        10 (4.54)
beta-Chloronaphthalene..................         91-58-7          2,4  U047....................      5000 (2270)
2-Chloronaphthalene.....................         91-58-7          2,4  U047....................      5000 (2270)
2-Chlorophenol..........................         95-57-8          2,4  U048....................       100 (45.4)
o-Chlorophenol..........................         95-57-8          2,4  U048....................       100 (45.4)
4-Chlorophenyl phenyl ether.............       7005-72-3            2  ........................      5000 (2270)
1-(o-Chlorophenyl)thiourea..............       5344-82-1            4  P026....................       100 (45.4)
Chloroprene.............................        126-99-8            3  ........................       100 (45.4)
3-Chloropropionitrile...................        542-76-7            4  P027....................       1000 (454)
Chlorosulfonic acid.....................       7790-94-5            1  ........................       1000 (454)
4-Chloro-o-toluidine, hydrochloride.....       3165-93-3            4  U049....................       100 (45.4)
Chlorpyrifos............................       2921-88-2            1  ........................        1 (0.454)
Chromic acetate.........................       1066-30-4            1  ........................       1000 (454)
Chromic acid............................       7738-94-5            1  ........................        10 (4.54)
Chromic acid H2CrO4, calcium salt.......      13765-19-0          1,4  U032....................        10 (4.54)
Chromic sulfate.........................      10101-53-8            1  ........................       1000 (454)
CHROMIUM AND COMPOUNDS..................            N.A.          2,3  ........................               **
Chromium Compounds......................            N.A.          2,3  ........................               **
Chromium \III\..........................       7440-47-3            2  ........................      5000 (2270)

Chromous chloride.......................      10049-05-5            1  ........................       1000 (454)
Chrysene................................        218-01-9          2,4  U050....................       100 (45.4)
Cobalt Compounds........................            N.A.            3  ........................               **
Cobaltous bromide.......................       7789-43-7            1  ........................       1000 (454)
Cobaltous formate.......................        544-18-3            1  ........................       1000 (454)
Cobaltous sulfamate.....................      14017-41-5            1  ........................       1000 (454)
Coke Oven Emissions.....................            N.A.            3  ........................        1 (0.454)
COPPER AND COMPOUNDS....................            N.A.            2  ........................               **
Copper \III\............................       7440-50-8            2  ........................      5000 (2270)
Copper cyanide Cu(CN)...................        544-92-3            4  P029....................        10 (4.54)
Coumaphos...............................         56-72-4            1  ........................        10 (4.54)
Creosote................................             N.A            4  U051....................        1 (0.454)
Cresol (cresylic acid)..................       1319-77-3        1,3,4  U052....................       100 (45.4)
    m-Cresol............................        108-39-4            3  ........................       100 (45.4)
    o-Cresol............................         95-48-7            3  ........................       100 (45.4)
    p-Cresol............................        106-44-5            3  ........................       100 (45.4)
Cresols (isomers and mixture)...........       1319-77-3        1,3,4  U052....................       100 (45.4)
Cresylic acid (isomers and mixture).....       1319-77-3        1,3,4  U052....................       100 (45.4)
Crotonaldehyde..........................  123-73-9 4170-          1,4  U053....................       100 (45.4)
                                                    30-3
Cumene..................................         98-82-8          3,4  U055....................      5000 (2270)
m-Cumenyl methylcarbamate...............         64-00-6            4  P202....................        10 (4.54)
Cupric acetate..........................        142-71-2            1  ........................       100 (45.4)
Cupric acetoarsenite....................      12002-03-8            1  ........................        1 (0.454)
Cupric chloride.........................       7447-39-4            1  ........................        10 (4.54)
Cupric nitrate..........................       3251-23-8            1  ........................       100 (45.4)
Cupric oxalate..........................      55671-32-4            1  ........................       100 (45.4)
Cupric sulfate..........................       7758-98-7            1  ........................        10 (4.54)
Cupric sulfate, ammoniated..............      10380-29-7            1  ........................       100 (45.4)
Cupric tartrate.........................        815-82-7            1  ........................       100 (45.4)
CYANIDES................................            N.A.          2,3  ........................               **
Cyanide Compounds.......................            N.A.          2,3  ........................               **
Cyanides (soluble salts and complexes)              N.A.            4  P030....................        10 (4.54)
 not otherwise specified.
Cyanogen................................        460-19-5            4  P031....................       100 (45.4)
Cyanogen bromide (CN)Br.................        506-68-3            4  U246....................       1000 (454)
Cyanogen chloride (CN)Cl................        506-77-4          1,4  P033....................        10 (4.54)
2,5-Cyclohexadiene-1,4-dione............        106-51-4          3,4  U197....................        10 (4.54)
Cyclohexane.............................        110-82-7          1,4  U056....................       1000 (454)
Cyclohexane, 1,2,3,4,5,6-hexachloro-,            58-89-9      1,2,3,4  U129....................        1 (0.454)
 (1[alpha], 2[alpha], 3[beta]-,
 4[alpha], 5[alpha], 6[beta]).
Cyclohexanone...........................        108-94-1            4  U057....................      5000 (2270)
2-Cyclohexyl-4,6-dinitrophenol..........        131-89-5            4  P034....................       100 (45.4)
1,3-Cyclopentadiene, 1,2,3,4,5,5-                77-47-4      1,2,3,4  U130....................        10 (4.54)
 hexachloro-.
Cyclophosphamide........................         50-18-0            4  U058....................        10 (4.54)
2,4-D Acid..............................         94-75-7        1,3,4  U240....................       100 (45.4)
2,4-D Ester.............................         94-11-1            1  ........................       100 (45.4)
                                                 94-79-1
                                                 94-80-4
                                               1320-18-9
                                               1928-38-7
                                               1928-61-6
                                               1929-73-3
                                               2971-38-2
                                              25168-26-7
                                              53467-11-1
2,4-D, salts and esters.................         94-75-7        1,3,4  U240....................       100 (45.4)
Daunomycin..............................      20830-81-3            4  U059....................        10 (4.54)
DDD.....................................         72-54-8        1,2,4  U060....................        1 (0.454)
4,4'-DDD................................         72-54-8        1,2,4  U060....................        1 (0.454)
DDE \b\.................................         72-55-9          2,4  ........................        1 (0.454)
DDE \b\.................................       3547-04-4            3  ........................      5000 (2270)
4,4'-DDE................................         72-55-9          2,4  ........................        1 (0.454)
DDT.....................................         50-29-3        1,2,4  U061....................        1 (0.454)
4,4'-DDT................................         50-29-3        1,2,4  U061....................        1 (0.454)
DDT AND METABOLITES.....................            N.A.            2  ........................               **
DEHP....................................        117-81-7        2,3,4  U028....................       100 (45.4)
Diallate................................       2303-16-4            4  U062....................       100 (45.4)
Diazinon................................        333-41-5            1  ........................        1 (0.454)
Diazomethane............................        334-88-3            3  ........................       100 (45.4)
Dibenz[a,h]anthracene...................         53-70-3          2,4  U063....................        1 (0.454)
1,2:5,6-Dibenzanthracene................         53-70-3          2,4  U063....................        1 (0.454)
Dibenzo[a,h]anthracene..................         53-70-3          2,4  U063....................        1 (0.454)
Dibenzofuran............................        132-64-9            3  ........................       100 (45.4)
Dibenzo[a,i]pyrene......................        189-55-9            4  U064....................        10 (4.54)
1,2-Dibromo-3-chloropropane.............         96-12-8          3,4  U066....................        1 (0.454)
Dibromoethane...........................        106-93-4        1,3,4  U067....................        1 (0.454)
Dibutyl phthalate.......................         84-74-2      1,2,3,4  U069....................        10 (4.54)
Di-n-butyl phthalate....................         84-74-2      1,2,3,4  U069....................        10 (4.54)
Dicamba.................................       1918-00-9            1  ........................       1000 (454)
Dichlobenil.............................       1194-65-6            1  ........................       100 (45.4)

Dichlone................................        117-80-6            1  ........................        1 (0.454)
Dichlorobenzene.........................      25321-22-6          1,2  ........................       100 (45.4)
    1,2-Dichlorobenzene.................         95-50-1        1,2,4  U070....................       100 (45.4)
    1,3-Dichlorobenzene.................        541-73-1          2,4  U071....................       100 (45.4)
    1,4-Dichlorobenzene.................        106-46-7      1,2,3,4  U072....................       100 (45.4)
    m-Dichlorobenzene...................        541-73-1          2,4  U071....................       100 (45.4)
    o-Dichlorobenzene...................         95-50-1        1,2,4  U070....................       100 (45.4)
    p-Dichlorobenzene...................        106-46-7      1,2,3,4  U072....................       100 (45.4)
DICHLOROBENZIDINE.......................       1331-47-1            2  ........................               **
    3,3'-Dichlorobenzidine..............         91-94-1        2,3,4  U073....................        1 (0.454)
Dichlorobromomethane....................         75-27-4            2  ........................      5000 (2270)
1,4-Dichloro-2-butene...................        764-41-0            4  U074....................        1 (0.454)
Dichlorodifluoromethane.................         75-71-8            4  U075....................      5000 (2270)
1,1-Dichloroethane......................         75-34-3        2,3,4  U076....................       1000 (454)
1,2-Dichloroethane......................        107-06-2      1,2,3,4  U077....................       100 (45.4)
1,1-Dichloroethylene....................         75-35-4      1,2,3,4  U078....................       100 (45.4)
1,2-Dichloroethylene....................        156-60-5          2,4  U079....................       1000 (454)
Dichloroethyl ether.....................        111-44-4        2,3,4  U025....................        10 (4.54)
Dichloroisopropyl ether.................        108-60-1          2,4  U027....................       1000 (454)
Dichloromethane.........................         75-09-2        2,3,4  U080....................       1000 (454)
Dichloromethoxy ethane..................        111-91-1          2,4  U024....................       1000 (454)
Dichloromethyl ether....................        542-88-1          3,4  P016....................        10 (4.54)
2,4-Dichlorophenol......................        120-83-2          2,4  U081....................       100 (45.4)
2,6-Dichlorophenol......................         87-65-0            4  U082....................       100 (45.4)
Dichlorophenylarsine....................        696-28-6            4  P036....................        1 (0.454)
Dichloropropane.........................      26638-19-7          1,2  ........................       1000 (454)
    1,1-Dichloropropane.................         78-99-9          1,2  ........................       1000 (454)
    1,2-Dichloropropane.................         78-87-5      1,2,3,4  U083....................       1000 (454)
    1,3-Dichloropropane.................        142-28-9          1,2  ........................       1000 (454)
Dichloropropane--Dichloropropene               8003-19-8            1  ........................       100 (45.4)
 (mixture).
Dichloropropene.........................      26952-23-8          1,2  ........................       100 (45.4)
    1,3-Dichloropropene.................        542-75-6      1,2,3,4  U084....................       100 (45.4)
    2,3-Dichloropropene.................         78-88-6          1,2  ........................       100 (45.4)
2,2-Dichloropropionic acid..............         75-99-0            1  ........................      5000 (2270)
Dichlorvos..............................         62-73-7          1,3  ........................        10 (4.54)
Dicofol.................................        115-32-2            1  ........................        10 (4.54)
Dieldrin................................         60-57-1        1,2,4  P037....................        1 (0.454)
1,2:3,4-Diepoxybutane...................       1464-53-5            4  U085....................        10 (4.54)
Diethanolamine..........................        111-42-2            3  ........................       100 (45.4)
Diethylamine............................        109-89-7            1  ........................       100 (45.4)
N,N-Diethylaniline......................         91-66-7            3  ........................       1000 (454)
Diethylarsine...........................        692-42-2            4  P038....................        1 (0.454)
1,4-Diethyleneoxide.....................        123-91-1          3,4  U108....................       100 (45.4)
Diethylene glycol, dicarbamate..........       5952-26-1            4  U395....................      5000 (2270)
Diethylhexyl phthalate..................        117-81-7        2,3,4  U028....................       100 (45.4)
N,N'-Diethylhydrazine...................       1615-80-1            4  U086....................        10 (4.54)
O,O-Diethyl S-methyl dithiophosphate....       3288-58-2            4  U087....................      5000 (2270)
Diethyl-p-nitrophenyl phosphate.........        311-45-5            4  P041....................       100 (45.4)
Diethyl phthalate.......................         84-66-2          2,4  U088....................       1000 (454)
O,O-Diethyl O-pyrazinyl phosphorothioate        297-97-2            4  P040....................       100 (45.4)
Diethylstilbestrol......................         56-53-1            4  U089....................        1 (0.454)
Diethyl sulfate.........................         64-67-5            3  ........................        10 (4.54)
Dihydrosafrole..........................         94-58-6            4  U090....................        10 (4.54)
Diisopropylfluorophosphate (DFP)........         55-91-4            4  P043....................       100 (45.4)
1,4:5,8-Dimethanonaphthalene,                   309-00-2        1,2,4  P004....................        1 (0.454)
 1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-
 hexahydro-,
 (1alpha,4alpha,4abeta,5alpha,
 8alpha,8abeta)-.
1,4:5,8-Dimethanonaphthalene,                   465-73-6            4  P060....................        1 (0.454)
 1,2,3,4,10,10-hexachloro- 1,4,4a,5,8,8a-
 hexahydro-, (1alpha,4alpha,4abeta,
 5beta,8beta,8abeta)-.
2,7:3,6-Dimethanonaphth[2,3-                     60-57-1        1,2,4  P037....................        1 (0.454)
 b]oxirene,3,4,5,6,9,9- hexachloro-
 1a,2,2a,3,6,6a,7,7a- octahydro-
 ,(1aalpha,2beta,
 2aalpha,3beta,6beta,6aalpha,
 7beta,7aalpha)-.
2,7:3,6-Dimethanonaphth[2, 3-                    72-20-8        1,2,4  P051....................        1 (0.454)
 b]oxirene,3,4,5,6,9,9- hexachloro-
 1a,2,2a,3,6,6a,7,7a- octahydro-
 ,(1aalpha,2beta, 2abeta,3alpha,6alpha,
 6abeta,7beta,7aalpha)-, & metabolites.
Dimethoate..............................         60-51-5            4  P044....................        10 (4.54)
3,3'-Dimethoxybenzidine.................        119-90-4          3,4  U091....................       100 (45.4)
Dimethylamine...........................        124-40-3          1,4  U092....................       1000 (454)
Dimethyl aminoazobenzene................         60-11-7          3,4  U093....................        10 (4.54)
p-Dimethylaminoazobenzene...............         60-11-7          3,4  U093....................        10 (4.54)
N,N-Dimethylaniline.....................        121-69-7            3  ........................       100 (45.4)
7,12-Dimethylbenz[a]anthracene..........         57-97-6            4  U094....................        1 (0.454)
3,3'-Dimethylbenzidine..................        119-93-7          3,4  U095....................        10 (4.54)
alpha,alpha-Dimethylbenzylhydroperoxide.         80-15-9            4  U096....................        10 (4.54)
Dimethylcarbamoyl chloride..............         79-44-7          3,4  U097....................        1 (0.454)
Dimethylformamide.......................         68-12-2            3  ........................       100 (45.4)
1,1-Dimethylhydrazine...................         57-14-7          3,4  U098....................        10 (4.54)
1,2-Dimethylhydrazine...................        540-73-8            4  U099....................        1 (0.454)
alpha,alpha-Dimethylphenethylamine......        122-09-8            4  P046....................      5000 (2270)
2,4-Dimethylphenol......................        105-67-9          2,4  U101....................       100 (45.4)
Dimethyl phthalate......................        131-11-3        2,3,4  U102....................      5000 (2270)
Dimethyl sulfate........................         77-78-1          3,4  U103....................       100 (45.4)

Dimetilan...............................        644-64-4            4  P191....................        1 (0.454)
Dinitrobenzene (mixed)..................      25154-54-5            1  ........................       100 (45.4)
    m-Dinitrobenzene....................         99-65-0            1  ........................       100 (45.4)
    o-Dinitrobenzene....................        528-29-0            1  ........................       100 (45.4)
    p-Dinitrobenzene....................        100-25-4            1  ........................       100 (45.4)
4,6-Dinitro-o-cresol....................        534-52-1        2,3,4  P047....................        10 (4.54)
4,6-Dinitro-o-cresol, and salts.........        534-52-1          3,4  P047....................        10 (4.54)
Dinitrophenol...........................      25550-58-7            1  ........................        10 (4.54)
    2,4-Dinitrophenol...................         51-28-5      1,2,3,4  P048....................        10 (4.54)
    2,5-Dinitrophenol...................        329-71-5            1  ........................        10 (4.54)
    2,6-Dinitrophenol...................        573-56-8            1  ........................        10 (4.54)
Dinitrotoluene..........................      25321-14-6          1,2  ........................        10 (4.54)
    2,4-Dinitrotoluene..................        121-14-2      1,2,3,4  U105....................        10 (4.54)
    2,6-Dinitrotoluene..................        606-20-2        1,2,4  U106....................       100 (45.4)
    3,4-Dinitrotoluene..................        610-39-9          1,2  ........................        10 (4.54)
Dinoseb.................................         88-85-7            4  P020....................       1000 (454)
Di-n-octyl phthalate....................        117-84-0          2,4  U107....................      5000 (2270)
1,4-Dioxane.............................        123-91-1          3,4  U108....................       100 (45.4)
DIPHENYLHYDRAZINE.......................      38622-18-3            2  ........................               **
1,2-Diphenylhydrazine...................        122-66-7        2,3,4  U109....................        10 (4.54)
Diphosphoramide, octamethyl-............        152-16-9            4  P085....................       100 (45.4)
Diphosphoric acid, tetraethyl ester.....        107-49-3          1,4  P111....................        10 (4.54)
Dipropylamine...........................        142-84-7            4  U110....................      5000 (2270)
Di-n-propylnitrosamine..................        621-64-7          2,4  U111....................        10 (4.54)
Diquat..................................         85-00-7            1  ........................       1000 (454)
                                               2764-72-9
Disulfoton..............................        298-04-4          1,4  P039....................        1 (0.454)
Dithiobiuret............................        541-53-7            4  P049....................       100 (45.4)
1,3-Dithiolane-2-carboxaldehyde, 2,4-         26419-73-8            4  P185....................       100 (45.4)
 dimethyl-, O-[(methylamino)-
 carbonyl]oxime.
Diuron..................................        330-54-1            1  ........................       100 (45.4)
Dodecylbenzenesulfonic acid.............      27176-87-0            1  ........................       1000 (454)
ENDOSULFAN AND METABOLITES..............            N.A.            2  ........................               **
Endosulfan..............................        115-29-7        1,2,4  P050....................        1 (0.454)
    alpha-Endosulfan....................        959-98-8            2  ........................        1 (0.454)
    beta-Endosulfan.....................      33213-65-9            2  ........................        1 (0.454)
Endosulfan sulfate......................       1031-07-8            2  ........................        1 (0.454)
Endothall...............................        145-73-3            4  P088....................       1000 (454)
ENDRIN AND METABOLITES..................            N.A.          2,4  P051....................               **
Endrin, & metabolites...................         72-20-8        1,2,4  P051....................        1 (0.454)
Endrin..................................         72-20-8        1,2,4  P051....................        1 (0.454)
Endrin aldehyde.........................       7421-93-4            2  ........................        1 (0.454)
Epichlorohydrin.........................        106-89-8        1,3,4  U041....................       100 (45.4)
Epinephrine.............................         51-43-4            4  P042....................       1000 (454)
1,2-Epoxybutane.........................        106-88-7            3  ........................       100 (45.4)
Ethanal.................................         75-07-0        1,3,4  U001....................       1000 (454)
Ethanamine, N,N-diethyl-................        121-44-8        1,3,4  U404....................      5000 (2270)
Ethanamine, N-ethyl-N-nitroso-..........         55-18-5            4  U174....................        1 (0.454)
1,2-Ethanediamine, N,N-dimethyl-N'-2-            91-80-5            4  U155....................      5000 (2270)
 pyridinyl-N'-(2- thienylmethyl)-.
Ethane, 1,2-dibromo-....................        106-93-4        1,3,4  U067....................        1 (0.454)
Ethane, 1,1-dichloro-...................         75-34-3        2,3,4  U076....................       1000 (454)
Ethane, 1,2-dichloro-...................        107-06-2      1,2,3,4  U077....................       100 (45.4)
Ethanedinitrile.........................        460-19-5            4  P031....................       100 (45.4)
Ethane, hexachloro-.....................         67-72-1        2,3,4  U131....................       100 (45.4)
Ethane, 1,1'-[methylenebis(oxy)]bis[2-          111-91-1          2,4  U024....................       1000 (454)
 chloro-.
Ethane, 1,1'-oxybis-....................         60-29-7            4  U117....................       100 (45.4)
Ethane, 1,1'-oxybis[2-chloro-...........        111-44-4        2,3,4  U025....................        10 (4.54)
Ethane, pentachloro-....................         76-01-7            4  U184....................        10 (4.54)
Ethane, 1,1,1,2-tetrachloro-............        630-20-6            4  U208....................       100 (45.4)
Ethane, 1,1,2,2-tetrachloro-............         79-34-5        2,3,4  U209....................       100 (45.4)
Ethanethioamide.........................         62-55-5            4  U218....................        10 (4.54)
Ethane, 1,1,1-trichloro-................         71-55-6        2,3,4  U226....................       1000 (454)
Ethane, 1,1,2-trichloro-................         79-00-5        2,3,4  U227....................       100 (45.4)
Ethanimidothioic acid, 2-(dimethylamino)-     30558-43-1            4  U394....................      5000 (2270)
 N-hydroxy-2-oxo-, methyl ester.
Ethanimidothioic acid, 2-(dimethylamino)-     23135-22-0            4  P194....................       100 (45.4)
 N-[[(methylamino)carbonyl]oxy]-2-oxo-,
 methyl ester.
Ethanimidothioic acid, N-[[(methylamino)      16752-77-5            4  P066....................       100 (45.4)
 carbonyl]oxy]-, methyl ester.
Ethanimidothioic acid, N,N'-                  59669-26-0            4  U410....................       100 (45.4)
 [thiobis[(methylimino) carbonyloxy]]bis-
 , dimethyl ester.
Ethanol, 2-ethoxy-......................        110-80-5            4  U359....................       1000 (454)
Ethanol, 2,2'-(nitrosoimino)bis-........       1116-54-7            4  U173....................        1 (0.454)
Ethanol, 2,2'-oxybis-, dicarbamate......       5952-26-1            4  U395....................      5000 (2270)
Ethanone, 1-phenyl-.....................         98-86-2          3,4  U004....................      5000 (2270)
Ethene, chloro-.........................         75-01-4        2,3,4  U043....................        1 (0.454)
Ethene, (2-chloroethoxy)-...............        110-75-8          2,4  U042....................       1000 (454)
Ethene, 1,1-dichloro-...................         75-35-4      1,2,3,4  U078....................       100 (45.4)
Ethene, 1,2-dichloro-(E)................        156-60-5          2,4  U079....................       1000 (454)
Ethene, tetrachloro-....................        127-18-4        2,3,4  U210....................       100 (45.4)
Ethene, trichloro-......................         79-01-6      1,2,3,4  U228....................       100 (45.4)
Ethion..................................        563-12-2            1  ........................        10 (4.54)
Ethyl acetate...........................        141-78-6            4  U112....................      5000 (2270)
Ethyl acrylate..........................        140-88-5          3,4  U113....................       1000 (454)

Ethylbenzene............................        100-41-4        1,2,3  ........................       1000 (454)
Ethyl carbamate.........................         51-79-6          3,4  U238....................       100 (45.4)
Ethyl chloride..........................         75-00-3          2,3  ........................       100 (45.4)
Ethyl cyanide...........................        107-12-0            4  P101....................        10 (4.54)
Ethylenebisdithiocarbamic acid, salts &         111-54-6            4  U114....................      5000 (2270)
 esters.
Ethylenediamine.........................        107-15-3            1  ........................      5000 (2270)
Ethylenediamine-tetraacetic acid (EDTA).         60-00-4            1  ........................      5000 (2270)
Ethylene dibromide......................        106-93-4        1,3,4  U067....................        1 (0.454)
Ethylene dichloride.....................        107-06-2      1,2,3,4  U077....................       100 (45.4)
Ethylene glycol.........................        107-21-1            3  ........................      5000 (2270)
Ethylene glycol monoethyl ether.........        110-80-5            4  U359....................       1000 (454)
Ethylene oxide..........................         75-21-8          3,4  U115....................        10 (4.54)
Ethylenethiourea........................         96-45-7          3,4  U116....................        10 (4.54)
Ethylenimine............................        151-56-4          3,4  P054....................        1 (0.454)
Ethyl ether.............................         60-29-7            4  U117....................       100 (45.4)
Ethylidene dichloride...................         75-34-3        2,3,4  U076....................       1000 (454)
Ethyl methacrylate......................         97-63-2            4  U118....................       1000 (454)
Ethyl methanesulfonate..................         62-50-0            4  U119....................        1 (0.454)
Famphur.................................         52-85-7            4  P097....................       1000 (454)
Ferric ammonium citrate.................       1185-57-5            1  ........................       1000 (454)
Ferric ammonium oxalate.................       2944-67-4            1  ........................       1000 (454)
                                              55488-87-4
Ferric chloride.........................       7705-08-0            1  ........................       1000 (454)
Ferric fluoride.........................       7783-50-8            1  ........................       100 (45.4)
Ferric nitrate..........................      10421-48-4            1  ........................       1000 (454)
Ferric sulfate..........................      10028-22-5            1  ........................       1000 (454)
Ferrous ammonium sulfate................      10045-89-3            1  ........................       1000 (454)
Ferrous chloride........................       7758-94-3            1  ........................       100 (45.4)
Ferrous sulfate.........................       7720-78-7            1  ........................       1000 (454)
                                               7782-63-0
Fine mineral fibers \c\.................            N.A.            3  ........................               **
Fluoranthene............................        206-44-0          2,4  U120....................       100 (45.4)
Fluorene................................         86-73-7            2  ........................      5000 (2270)
Fluorine................................       7782-41-4            4  P056....................        10 (4.54)
Fluoroacetamide.........................        640-19-7            4  P057....................       100 (45.4)
Fluoroacetic acid, sodium salt..........         62-74-8            4  P058....................        10 (4.54)
Formaldehyde............................         50-00-0        1,3,4  U122....................       100 (45.4)
Formetanate hydrochloride...............      23422-53-9            4  P198....................       100 (45.4)
Formic acid.............................         64-18-6          1,4  U123....................      5000 (2270)
Formparanate............................      17702-57-7            4  P197....................       100 (45.4)
Fulminic acid, mercury(2 +)salt.........        628-86-4            4  P065....................        10 (4.54)
Fumaric acid............................        110-17-8            1  ........................      5000 (2270)
Furan...................................        110-00-9            4  U124....................       100 (45.4)
2-Furancarboxaldehyde...................         98-01-1          1,4  U125....................      5000 (2270)
2,5-Furandione..........................        108-31-6        1,3,4  U147....................      5000 (2270)
Furan, tetrahydro-......................        109-99-9            4  U213....................       1000 (454)
Furfural................................         98-01-1          1,4  U125....................      5000 (2270)
Furfuran................................        110-00-9            4  U124....................       100 (45.4)
Glucopyranose, 2-deoxy-2-(3-methyl-3-         18883-66-4            4  U206....................        1 (0.454)
 nitrosoureido)-,D-.
D-Glucose, 2-deoxy-2-                         18883-66-4            4  U206....................        1 (0.454)
 [[(methylnitrosoamino)-carbonyl]amino]-.
Glycidylaldehyde........................        765-34-4            4  U126....................        10 (4.54)
Glycol ethers \d\.......................            N.A.            3  ........................               **
Guanidine, N-methyl-N'-nitro-N-nitroso-.         70-25-7            4  U163....................        10 (4.54)
Guthion.................................         86-50-0            1  ........................        1 (0.454)
HALOETHERS..............................            N.A.            2  ........................               **
HALOMETHANES............................            N.A.            2  ........................               **
HEPTACHLOR AND METABOLITES..............            N.A.            2  ........................               **
Heptachlor..............................         76-44-8      1,2,3,4  P059....................        1 (0.454)
Heptachlor epoxide......................       1024-57-3            2  ........................        1 (0.454)
Hexachlorobenzene.......................        118-74-1        2,3,4  U127....................        10 (4.54)
Hexachlorobutadiene.....................         87-68-3        2,3,4  U128....................        1 (0.454)
HEXACHLOROCYCLOHEXANE (all isomers).....        608-73-1            2  ........................               **
Hexachlorocyclopentadiene...............         77-47-4      1,2,3,4  U130....................        10 (4.54)
Hexachloroethane........................         67-72-1        2,3,4  U131....................       100 (45.4)
Hexachlorophene.........................         70-30-4            4  U132....................       100 (45.4)
Hexachloropropene.......................       1888-71-7            4  U243....................       1000 (454)
Hexaethyl tetraphosphate................        757-58-4            4  P062....................       100 (45.4)
Hexamethylene-1,6-diisocyanate..........        822-06-0            3  ........................       100 (45.4)
Hexamethylphosphoramide.................        680-31-9            3  ........................        1 (0.454)
Hexane..................................        110-54-3            3  ........................      5000 (2270)
Hexone..................................        108-10-1          3,4  U161....................      5000 (2270)
Hydrazine...............................        302-01-2          3,4  U133....................        1 (0.454)
Hydrazinecarbothioamide.................         79-19-6            4  P116....................       100 (45.4)
Hydrazine, 1,2-diethyl-.................       1615-80-1            4  U086....................        10 (4.54)
Hydrazine, 1,1-dimethyl-................         57-14-7          3,4  U098....................        10 (4.54)
Hydrazine, 1,2-dimethyl-................        540-73-8            4  U099....................        1 (0.454)
Hydrazine, 1,2-diphenyl-................        122-66-7        2,3,4  U109....................        10 (4.54)
Hydrazine, methyl-......................         60-34-4          3,4  P068....................        10 (4.54)
Hydrochloric acid.......................       7647-01-0          1,3  ........................      5000 (2270)

Hydrocyanic acid........................         74-90-8          1,4  P063....................        10 (4.54)
Hydrofluoric acid.......................       7664-39-3        1,3,4  U134....................       100 (45.4)
Hydrogen chloride.......................       7647-01-0          1,3  ........................      5000 (2270)
Hydrogen cyanide........................         74-90-8          1,4  P063....................        10 (4.54)
Hydrogen fluoride.......................       7664-39-3        1,3,4  U134....................       100 (45.4)
Hydrogen phosphide......................       7803-51-2          3,4  P096....................       100 (45.4)
Hydrogen sulfide H2S....................       7783-06-4          1,4  U135....................       100 (45.4)
Hydroperoxide, 1-methyl-1-phenylethyl-..         80-15-9            4  U096....................        10 (4.54)
Hydroquinone............................        123-31-9            3  ........................       100 (45.4)
2-Imidazolidinethione...................         96-45-7          3,4  U116....................        10 (4.54)
Indeno(1,2,3-cd)pyrene..................        193-39-5          2,4  U137....................       100 (45.4)
Iodomethane.............................         74-88-4          3,4  U138....................       100 (45.4)
1,3-Isobenzofurandione..................         85-44-9          3,4  U190....................      5000 (2270)
Isobutyl alcohol........................         78-83-1            4  U140....................      5000 (2270)
Isodrin.................................        465-73-6            4  P060....................        1 (0.454)
Isolan..................................        119-38-0            4  P192....................       100 (45.4)
Isophorone..............................         78-59-1          2,3  ........................      5000 (2270)
Isoprene................................         78-79-5            1  ........................       100 (45.4)
Isopropanolamine dodecylbenzenesulfonate      42504-46-1            1  ........................       1000 (454)
3-Isopropylphenyl N-methylcarbamate.....         64-00-6            4  P202....................        10 (4.54)
Isosafrole..............................        120-58-1            4  U141....................       100 (45.4)
3(2H)-Isoxazolone, 5-(aminomethyl)-.....       2763-96-4            4  P007....................       1000 (454)
Kepone..................................        143-50-0          1,4  U142....................        1 (0.454)
Lasiocarpine............................        303-34-4            4  U143....................        10 (4.54)
LEAD AND COMPOUNDS......................            N.A.          2,3  ........................               **
Lead \III\..............................       7439-92-1            2  ........................        10 (4.54)
Lead acetate............................        301-04-2          1,4  U144....................        10 (4.54)
Lead arsenate...........................       7784-40-9            1  ........................        1 (0.454)
                                               7645-25-2
                                              10102-48-4
Lead, bis(acetato-O)tetrahydroxytri-....       1335-32-6            4  U146....................        10 (4.54)
Lead chloride...........................       7758-95-4            1  ........................        10 (4.54)
Lead compounds..........................            N.A.          2,3  ........................               **
Lead fluoborate.........................      13814-96-5            1  ........................        10 (4.54)
Lead fluoride...........................       7783-46-2            1  ........................        10 (4.54)
Lead iodide.............................      10101-63-0            1  ........................        10 (4.54)
Lead nitrate............................      10099-74-8            1  ........................        10 (4.54)
Lead phosphate..........................       7446-27-7            4  U145....................        10 (4.54)
Lead stearate...........................       1072-35-1            1  ........................        10 (4.54)
                                               7428-48-0
                                              56189-09-4
Lead subacetate.........................       1335-32-6            4  U146....................        10 (4.54)
Lead sulfate............................       7446-14-2            1  ........................        10 (4.54)
                                              15739-80-7
Lead sulfide............................       1314-87-0            1  ........................        10 (4.54)
Lead thiocyanate........................        592-87-0            1  ........................        10 (4.54)
Lindane.................................         58-89-9      1,2,3,4  U129....................        1 (0.454)
Lindane (all isomers)...................         58-89-9      1,2,3,4  U129....................        1 (0.454)
Lithium chromate........................      14307-35-8            1  ........................        10 (4.54)
Malathion...............................        121-75-5            1  ........................       100 (45.4)
Maleic acid.............................        110-16-7            1  ........................      5000 (2270)
Maleic anhydride........................        108-31-6        1,3,4  U147....................      5000 (2270)
Maleic hydrazide........................        123-33-1            4  U148....................      5000 (2270)
Malononitrile...........................        109-77-3            4  U149....................       1000 (454)
Manganese, bis (dimethylcarbamodithioato-     15339-36-3            4  P196....................        10 (4.54)
 S,S')-.
Manganese Compounds.....................            N.A.            3  ........................               **
Manganese dimethyldithiocarbamate.......      15339-36-3            4  P196....................        10 (4.54)
MDI.....................................        101-68-8            3  ........................      5000 (2270)
MEK.....................................         78-93-3            4  U159....................      5000 (2270)
Melphalan...............................        148-82-3            4  U150....................        1 (0.454)
Mercaptodimethur........................       2032-65-7          1,4  P199....................        10 (4.54)
MERCURY AND COMPOUNDS...................            N.A.          2,3  ........................               **
Mercury Compounds.......................            N.A.          2,3  ........................               **
Mercuric cyanide........................        592-04-1            1  ........................         1(0.454)
Mercuric nitrate........................      10045-94-0            1  ........................        10 (4.54)
Mercuric sulfate........................       7783-35-9            1  ........................        10 (4.54)
Mercuric thiocyanate....................        592-85-8            1  ........................        10 (4.54)
Mercurous nitrate.......................      10415-75-5            1  ........................        10 (4.54)
Mercury.................................       7782-86-7        2,3,4  U151....................        1 (0.454)
                                               7439-97-6
Mercury, (acetato-O)phenyl-.............         62-38-4            4  P092....................       100 (45.4)
Mercury fulminate.......................        628-86-4            4  P065....................        10 (4.54)
Methacrylonitrile.......................        126-98-7            4  U152....................       1000 (454)
Methanamine, N-methyl-..................        124-40-3          1,4  U092....................       1000 (454)
Methanamine, N-methyl-N-nitroso-........         62-75-9        2,3,4  P082....................        10 (4.54)
Methane, bromo-.........................         74-83-9        2,3,4  U029....................       1000 (454)
Methane, chloro-........................         74-87-3        2,3,4  U045....................       100 (45.4)
Methane, chloromethoxy-.................        107-30-2          3,4  U046....................        10 (4.54)
Methane, dibromo-.......................         74-95-3            4  U068....................       1000 (454)

Methane, dichloro-......................         75-09-2        2,3,4  U080....................       1000 (454)
Methane, dichlorodifluoro-..............         75-71-8            4  U075....................      5000 (2270)
Methane, iodo-..........................         74-88-4          3,4  U138....................       100 (45.4)
Methane, isocyanato-....................        624-83-9          3,4  P064....................        10 (4.54)
Methane, oxybis(chloro-.................        542-88-1          3,4  P016....................        10 (4.54)
Methanesulfenyl chloride, trichloro-....        594-42-3            4  P118....................       100 (45.4)
Methanesulfonic acid, ethyl ester.......         62-50-0            4  U119....................        1 (0.454)
Methane, tetrachloro-...................         56-23-5      1,2,3,4  U211....................        10 (4.54)
Methane, tetranitro-....................        509-14-8            4  P112....................        10 (4.54)
Methanethiol............................         74-93-1          1,4  U153....................       100 (45.4)
Methane, tribromo-......................         75-25-2        2,3,4  U225....................       100 (45.4)
Methane, trichloro-.....................         67-66-3      1,2,3,4  U044....................        10 (4.54)
Methane, trichlorofluoro-...............         75-69-4            4  U121....................      5000 (2270)
Methanimidamide, N,N-dimethyl-N'-[3-          23422-53-9            4  P198....................       100 (45.4)
 [[(methylamino)-carbonyl]oxy]phenyl]-,
 monohydrochloride.
Methanimidamide, N,N-dimethyl-N'-[2-          17702-57-7            4  P197....................       100 (45.4)
 methyl-4- [[(methylamino)
 carbonyl]oxy]phenyl]-.
6,9-Methano-2,4,3-benzodioxathiepin,            115-29-7        1,2,4  P050....................        1 (0.454)
 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-
 hexahydro-, 3-oxide.
4,7-Methano-1H-indene, 1,4,5,6,7,8,8-            76-44-8      1,2,3,4  P059....................        1 (0.454)
 heptachloro-3a,4,7,7a-tetrahydro-.
4,7-Methano-1H-indene, 1,2,4,5,6,7,8,8-          57-74-9      1,2,3,4  U036....................        1 (0.454)
 octachloro-2,3,3a,4,7,7a-hexahydro-.
Methanol................................         67-56-1          3,4  U154....................      5000 (2270)
Methapyrilene...........................         91-80-5            4  U155....................      5000 (2270)
1,3,4-Metheno-2H-cyclobuta[cd]pentalen-2-       143-50-0          1,4  U142....................        1 (0.454)
 one, 1,1a,3,3a,4,5,5,5a,5b,6-
 decachlorooctahydro-.
Methiocarb..............................       2032-65-7          1,4  P199....................        10 (4.54)
Methomyl................................      16752-77-5            4  P066....................       100 (45.4)
Methoxychlor............................         72-43-5        1,3,4  U247....................        1 (0.454)
Methyl alcohol..........................         67-56-1          3,4  U154....................      5000 (2270)
2-Methyl aziridine......................         75-55-8          3,4  P067....................        1 (0.454)
Methyl bromide..........................         74-83-9        2,3,4  U029....................       1000 (454)
1-Methylbutadiene.......................        504-60-9            4  U186....................       100 (45.4)
Methyl chloride.........................         74-87-3        2,3,4  U045....................       100 (45.4)
Methyl chlorocarbonate..................         79-22-1            4  U156....................       1000 (454)
Methyl chloroform.......................         71-55-6        2,3,4  U226....................       1000 (454)
3-Methylcholanthrene....................         56-49-5            4  U157....................        10 (4.54)
4,4'-Methylenebis(2-chloroaniline)......        101-14-4          3,4  U158....................        10 (4.54)
Methylene bromide.......................         74-95-3            4  U068....................       1000 (454)
Methylene chloride......................         75-09-2        2,3,4  U080....................       1000 (454)
4,4'-Methylenedianiline.................        101-77-9            3  ........................        10 (4.54)
Methylene diphenyl diisocyanate.........        101-68-8            3  ........................      5000 (2270)
Methyl ethyl ketone.....................         78-93-3            4  U159....................      5000 (2270)
Methyl ethyl ketone peroxide............       1338-23-4            4  U160....................        10 (4.54)
Methyl hydrazine........................         60-34-4          3,4  P068....................        10 (4.54)
Methyl iodide...........................         74-88-4          3,4  U138....................       100 (45.4)
Methyl isobutyl ketone..................        108-10-1          3,4  U161....................      5000 (2270)
Methyl isocyanate.......................        624-83-9          3,4  P064....................        10 (4.54)
2-Methyllactonitrile....................         75-86-5          1,4  P069....................        10 (4.54)
Methyl mercaptan........................         74-93-1          1,4  U153....................       100 (45.4)
Methyl methacrylate.....................         80-62-6        1,3,4  U162....................       1000 (454)
Methyl parathion........................        298-00-0          1,4  P071....................       100 (45.4)
4-Methyl-2-pentanone....................        108-10-1          3,4  U161....................      5000 (2270)
Methyl tert-butyl ether.................       1634-04-4            3  ........................       1000 (454)
Methylthiouracil........................         56-04-2            4  U164....................        10 (4.54)
Metolcarb...............................       1129-41-5            4  P190....................       1000 (454)
Mevinphos...............................       7786-34-7            1  ........................        10 (4.54)
Mexacarbate.............................        315-18-4          1,4  P128....................       1000 (454)
Mitomycin C.............................         50-07-7            4  U010....................        10 (4.54)
MNNG....................................         70-25-7            4  U163....................        10 (4.54)
Monoethylamine..........................         75-04-7            1  ........................       100 (45.4)
Monomethylamine.........................         74-89-5            1  ........................       100 (45.4)
Naled...................................        300-76-5            1  ........................        10 (4.54)
5,12-Naphthacenedione, 8-acetyl-10-[(3-       20830-81-3            4  U059....................        10 (4.54)
 amino-2,3,6-trideoxy-alpha-L-lyxo-
 hexopyranosyl)oxy]-7,8,9,10-tetrahydro-
 6,8,11-trihydroxy-1-methoxy-, (8S-cis)-.
1-Naphthalenamine.......................        134-32-7            4  U167....................       100 (45.4)
2-Naphthalenamine.......................         91-59-8            4  U168....................        10 (4.54)
Naphthalenamine, N,N'-bis(2-chloroethyl)-       494-03-1            4  U026....................       100 (45.4)
 .
Naphthalene.............................         91-20-3      1,2,3,4  U165....................       100 (45.4)
Naphthalene, 2-chloro-..................         91-58-7          2,4  U047....................      5000 (2270)
1,4-Naphthalenedione....................        130-15-4            4  U166....................      5000 (2270)
2,7-Naphthalenedisulfonic acid, 3,3'-            72-57-1            4  U236....................        10 (4.54)
 [(3,3'-dimethyl-(1,1'-biphenyl)-4,4'-
 diyl)-bis(azo)]bis(5-amino-4-hydroxy)-
 tetrasodium salt.
1-Naphthalenol, methylcarbamate.........         63-25-2        1,3,4  U279....................       100 (45.4)
Naphthenic acid.........................       1338-24-5            1  ........................       100 (45.4)
1,4-Naphthoquinone......................        130-15-4            4  U166....................      5000 (2270)
alpha-Naphthylamine.....................        134-32-7            4  U167....................       100 (45.4)
beta-Naphthylamine......................         91-59-8            4  U168....................        10 (4.54)
alpha-Naphthylthiourea..................         86-88-4            4  P072....................       100 (45.4)
NICKEL AND COMPOUNDS....................            N.A.          2,3  ........................               **
Nickel \III\............................       7440-02-0            2  ........................       100 (45.4)
Nickel ammonium sulfate.................      15699-18-0            1  ........................       100 (45.4)
Nickel carbonyl Ni(CO)4, (T-4)-.........      13463-39-3            4  P073....................        10 (4.54)
Nickel chloride.........................       7718-54-9            1  ........................       100 (45.4)
                                              37211-05-5

Nickel compounds........................            N.A.          2,3  ........................               **
Nickel cyanide Ni(CN)2..................        557-19-7            4  P074....................        10 (4.54)
Nickel hydroxide........................      12054-48-7            1  ........................        10 (4.54)
Nickel nitrate..........................      14216-75-2            1  ........................       100 (45.4)
Nickel sulfate..........................       7786-81-4            1  ........................       100 (45.4)
Nicotine, & salts.......................         54-11-5            4  P075....................       100 (45.4)
Nitric acid.............................       7697-37-2            1  ........................       1000 (454)
Nitric acid, thallium (1 +) salt........      10102-45-1            4  U217....................       100 (45.4)
Nitric oxide............................      10102-43-9            4  P076....................        10 (4.54)
p-Nitroaniline..........................        100-01-6            4  P077....................      5000 (2270)
Nitrobenzene............................         98-95-3      1,2,3,4  U169....................       1000 (454)
4-Nitrobiphenyl.........................         92-93-3            3  ........................        10 (4.54)
Nitrogen dioxide........................      10102-44-0          1,4  P078....................        10 (4.54)
                                              10544-72-6
Nitrogen oxide NO.......................      10102-43-9            4  P076....................        10 (4.54)
Nitrogen oxide NO2......................      10102-44-0          1,4  P078....................        10 (4.54)
                                              10544-72-6
Nitroglycerine..........................         55-63-0            4  P081....................        10 (4.54)
NITROPHENOLS............................      25154-55-6            2  ........................               **
Nitrophenol (mixed).....................      25154-55-6            1  ........................       100 (45.4)
    m-Nitrophenol.......................        554-84-7            1  ........................       100 (45.4)
    o-Nitrophenol.......................         88-75-5          1,2  ........................       100 (45.4)
    p-Nitrophenol.......................        100-02-7      1,2,3,4  U170....................       100 (45.4)
    2-Nitrophenol.......................         88-75-5          1,2  ........................       100 (45.4)
    4-Nitrophenol.......................        100-02-7      1,2,3,4  U170....................       100 (45.4)
2-Nitropropane..........................         79-46-9          3,4  U171....................        10 (4.54)
NITROSAMINES............................            N.A.            2  ........................               **
N-Nitrosodi-n-butylamine................        924-16-3            4  U172....................        10 (4.54)
N-Nitrosodiethanolamine.................       1116-54-7            4  U173....................        1 (0.454)
N-Nitrosodiethylamine...................         55-18-5            4  U174....................        1 (0.454)
N-Nitrosodimethylamine..................         62-75-9        2,3,4  P082....................        10 (4.54)
N-Nitrosodiphenylamine..................         86-30-6            2  ........................       100 (45.4)
N-Nitroso-N-ethylurea...................        759-73-9            4  U176....................        1 (0.454)
N-Nitroso-N-methylurea..................        684-93-5          3,4  U177....................        1 (0.454)
N-Nitroso-N-methylurethane..............        615-53-2            4  U178....................        1 (0.454)
N-Nitrosomethylvinylamine...............       4549-40-0            4  P084....................        10 (4.54)
N-Nitrosomorpholine.....................         59-89-2            3  ........................        1 (0.454)
N-Nitrosopiperidine.....................        100-75-4            4  U179....................        10 (4.54)
N-Nitrosopyrrolidine....................        930-55-2            4  U180....................        1 (0.454)
Nitrotoluene............................       1321-12-6            1  ........................       1000 (454)
    m-Nitrotoluene......................         99-08-1            1  ........................       1000 (454)
    o-Nitrotoluene......................         88-72-2            1  ........................       1000 (454)
    p-Nitrotoluene......................         99-99-0            1  ........................       1000 (454)
5-Nitro-o-toluidine.....................         99-55-8            4  U181....................       100 (45.4)
Octamethylpyrophosphoramide.............        152-16-9            4  P085....................       100 (45.4)
Osmium oxide OsO4, (T-4)-...............      20816-12-0            4  P087....................       1000 (454)
Osmium tetroxide........................      20816-12-0            4  P087....................       1000 (454)
7-Oxabicyclo[221]heptane-2,3-                   145-73-3            4  P088....................       1000 (454)
 dicarboxylic acid.
Oxamyl..................................      23135-22-0            4  P194....................       100 (45.4)
1,2-Oxathiolane, 2,2-dioxide............       1120-71-4          3,4  U193....................        10 (4.54)
2H-1,3,2-Oxazaphosphorin-2-amine, N,N-           50-18-0            4  U058....................        10 (4.54)
 bis(2-chloroethyl)tetrahydro-, 2-oxide.
Oxirane.................................         75-21-8          3,4  U115....................        10 (4.54)
Oxiranecarboxyaldehyde..................        765-34-4            4  U126....................        10 (4.54)
Oxirane, (chloromethyl)-................        106-89-8        1,3,4  U041....................       100 (45.4)
Paraformaldehyde........................      30525-89-4            1  ........................       1000 (454)
Paraldehyde.............................        123-63-7            4  U182....................       1000 (454)
Parathion...............................         56-38-2        1,3,4  P089....................        10 (4.54)
PCBs....................................       1336-36-3        1,2,3  ........................        1 (0.454)
PCNB....................................         82-68-8          3,4  U185....................       100 (45.4)
Pentachlorobenzene......................        608-93-5            4  U183....................        10 (4.54)
Pentachloroethane.......................         76-01-7            4  U184....................        10 (4.54)
Pentachloronitrobenzene.................         82-68-8          3,4  U185....................       100 (45.4)
Pentachlorophenol.......................         87-86-5      1,2,3,4  See F027................        10 (4.54)
1,3-Pentadiene..........................        504-60-9            4  U186....................       100 (45.4)