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[Federal Register Volume 63, Number 76 (Tuesday, April 21, 1998)]
[Proposed Rules]
[Pages 19694-19699]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-10494]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 799

[OPPTS-42187N; FRL-5780-6]

RIN 2070-AC76

Amended Proposed Test Rule for Hazardous Air Pollutants; 
Extension of Comment Period

AGENCY: Environmental Protection Agency (EPA).

ACTION: Amended proposed rule; extension of comment period.

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SUMMARY: EPA is proposing additional amendments to the proposed test 
rule (61 FR 33178, June 26, 1996, as amended at 62 FR 67466, December 
24, 1997) that was issued under section 4(a) of the Toxic Substances 
Control Act (TSCA) that would require manufacturers (including 
importers) and processors to test the hazardous air pollutants (HAPs) 
specified in the amended proposed test rule for certain health effects. 
This second amended proposed test rule modifies the provisions 
identifying the persons that would be required to test under the HAPs 
rule, and provides additional guidance to persons in determining what 
their responsibilities would be

[[Page 19695]]

under the rule. In addition, EPA is extending the public comment period 
in order to provide interested persons with sufficient time to consider 
the changes described in this proposed rule and to comment accordingly.

DATES: Written comments on this proposed rule must be received by EPA 
on or before June 22, 1998. The public comment period on the June 26, 
1996, proposed rule and the December 24, 1997, amended proposed rule is 
being extended from May 11, 1998 to June 22, 1998.

ADDRESSES: Submit three copies of written comments on the second 
amended proposed HAPs test rule, identified by document control number 
(OPPTS-42187A; FRL-4869-1) to: U.S. Environmental Protection Agency, 
Office of Pollution Prevention and Toxics (OPPT), Document Control 
Office (7407), Rm. G-099, 401 M St., SW., Washington, DC 20460. See 
Unit IV. of this preamble for further instructions. The Document 
Control Office telephone number is (202) 260-7093.
    Comments and data may also be submitted electronically to 
[email protected]. Follow the instructions under Unit IV. of 
this document. No confidential business information (CBI) should be 
submitted through e-mail.

FOR FURTHER INFORMATION CONTACT: For general information: Susan B. 
Hazen, Director, Environmental Assistance Division (7408), Rm. ET-543B, 
Office of Pollution Prevention and Toxics, U.S. Environmental 
Protection Agency, 401 M St., SW., Washington, DC 20460; telephone: 
(202) 554-1404; TDD: (202) 554-0551; e-mail: TSCA-
H[email protected]. For technical information: Richard W. 
Leukroth, Jr. , Project Manager, Chemical Control Division (7405), 
Office of Pollution Prevention and Toxics, U.S. Environmental 
Protection Agency, 401 M St., SW., Washington, DC, 20460; telephone: 
(202) 260-0321; fax: (202) 260-1096; e-mail: 
[email protected].

SUPPLEMENTARY INFORMATION:

I. Electronic Availability:

    Internet: Electronic copies of this document and various support 
documents are available from the EPA Home Page at the Federal 
Register--Environmental Document service entry for this document under 
``Laws and Regulations'' (http://www.epa.gov/fedrgstr/EPA-TOX/1998/).
    Fax-On-Demand: Using a faxphone call 202-401-0527 and select item 
4640 for an index of available material and corresponding item numbers 
related to this document.

II. Background

    On June 26, 1996 (61 FR 33178), EPA issued a proposed test rule 
under TSCA section 4(a), 15 U.S.C. 2603(a), (the ``original HAPs 
proposal'') to require health effects testing of the following 
hazardous air pollutant chemicals: 1,1'-biphenyl (CAS No. 92-52-4), 
carbonyl sulfide (CAS No. 463-58-1), chlorine (CAS No. 7782-50-5), 
chlorobenzene (CAS No. 108-90-7), chloroprene (CAS No. 126-99-8), 
ortho-cresol (CAS No. 95-48-7), meta-cresol (CAS No. 108-39-4), para-
cresol (CAS No. 106-44-5), diethanolamine (CAS No. 111-42-2), 
ethylbenzene (CAS No. 100-41-4), ethylene dichloride (CAS No. 107-06-
2), ethylene glycol (CAS No. 107-21-1), hydrochloric acid (CAS No. 
7647-01-0), hydrogen fluoride (CAS No. 7664-39-3), maleic anhydride 
(CAS No. 108-31-6), methyl isobutyl ketone (CAS No. 108-10-1), methyl 
methacrylate (CAS No. 80-62-6), naphthalene (CAS No. 91-20-3), phenol 
(CAS No. 108-95-2), phthalic anhydride (CAS No. 85-44-9), 1,2,4-
trichlorobenzene (CAS No. 120-82-1), 1,1,2-trichloroethane (CAS No. 79-
00-5), and vinylidene chloride (CAS No. 75-35-4). The proposal also 
invited the submission of proposals for enforceable consent agreements 
(ECAs) for the HAPs chemicals which would include pharmacokinetics (PK) 
studies (61 FR 33178, 33189).
    The deadline for written comments on the proposed HAPs test rule 
contained in the June 26, 1996 Federal Register proposal was December 
23, 1996. EPA has successively extended the comment period on this 
proposed rule as follows: on October 18, 1996 (61 FR 54383) (FRL-5571-
3), the comment period was extended from December 23, 1996 to January 
31, 1997; on December 23, 1996 (61 FR 67516) (FRL-5580-6), it was 
extended from January 31, 1997 to March 31, 1997; on February 28, 1997 
(62 FR 9142) (FRL-5592-1), it was extended from March 31, 1997 to April 
30, 1997; on March 28, 1997 (62 FR 14850) (FRL-5598-4), it was extended 
from April 30, 1997 to June 30, 1997; on May 30, 1997 (62 FR 29318) 
(FRL-5831-6), it was extended from June 30, 1997 to August 15, 1997; on 
July 15, 1997 (62 FR 37833) (FRL-5732-2), it was extended from August 
15, 1997 to September 30, 1997; on September 26, 1997 (62 FR 50546) 
(FRL-5748-8), it was extended from September 30, 1997 to December 1, 
1997; on November 28, 1997 (62 FR 63299) (FRL-5759-2), it was extended 
from December 1, 1997 to January 9, 1998; and on February 5, 1998 (63 
FR 5915)(FRL-5769-3), it was extended from January 9, 1998 to May 11, 
1998. These extensions to the comment period were necessary to allow 
the Agency more time to finalize eleven TSCA health effects test 
guidelines to be cross-referenced in the amended HAPs test rule 
proposal, and to respond to the ECA proposals for PK studies submitted 
by industry.
    An amended proposed HAPs test rule was published on December 24, 
1997 (62 FR 67466) (FRL-5742-2) (the ``first amended proposal'') that: 
Used test guidelines codified at 40 CFR part 799, subpart H; removed 
the testing requirements for phenol; specified export notification 
requirements; reviewed the status of proposals for PK ECAs and invited 
ECA proposals for all HAPs chemicals for which proposals had not yet 
been received; discussed revisions to the economic assessment; 
referenced additional support documents in the rulemaking record; 
described modifications to the ``Persons Required To Test'' portion of 
the proposed rule; and made other changes and clarifications to the 
original proposal. The amended proposed HAPs test rule extended the 
comment period from January 9, 1998 to February 9, 1998. On February 5, 
1998 (63 FR 5915)(FRL-5769-3), the comment period was extended from 
February 9, 1998 to May 11, 1998. This extension was granted by the 
Agency in response to requests by the public for additional time in 
which to fully consider the changes effected by the first amended 
proposal and to adjust industry alliances. Also, in this document, the 
Agency clarified the ``Persons Required To Test'' section of the 
amended proposed HAPs preamble and the corresponding proposed 
regulatory text.
    In this second amended proposal, EPA is modifying the provision 
regarding the persons that would be required to test under the HAPs 
rule and is providing additional information to persons to assist them 
in determining what their responsibilities would be under the rule. The 
Agency is also extending the public comment period on the amended HAPs 
proposed rule from May 11, 1998 to June 22, 1998. This extension is 
needed to provide commenters with sufficient time to consider the 
changes described in this proposed rule, and to comment accordingly.
    For all aspects of the first amended HAPs test rule proposal that 
are not addressed by this second amendment to the HAPs proposal, the 
discussion in the preamble of the first amended HAPs test rule proposal 
continues to apply.

[[Page 19696]]

III. Modifications and Clarifications

    EPA is proposing to modify Unit III.C., the ``Persons Required To 
Test'' portion of the preamble to the first amended proposed rule (62 
FR 67466, 67469-72) and the corresponding section in the proposed 
regulatory text at 40 CFR 799.5053(a)(2), ``Persons required to submit 
study plans, conduct tests, and submit data'' (62 FR 67466, 67481). The 
Agency is also proposing to modify the clarification contained in the 
document published at 63 FR 5915, February 5, 1998, and is requesting 
comment on the modification. In addition, EPA is making clarifications 
concerning the physical states of the HAPs chemicals that are covered 
under the proposal, as amended. The clarifications and modifications 
are described in detail below.

A. Timeframe During Which Persons Would Be Subject to the Rule

    The original HAPs proposal stated that persons who manufacture 
(including import) or process, or who intend to manufacture (including 
import) or process, any of the HAPs chemicals included in the rule, 
other than as an impurity, would be subject to the rule (61 FR 33178, 
33189). The original proposal did not distinguish among persons subject 
to the rule based on low-volume production beyond the provisions of 40 
CFR 790.42(a). The regulations at 40 CFR 790.42(a) provide that, while 
legally subject to a test rule, processors, persons who manufacture 
less than 500 kg (1,100 lbs) of the chemical annually, and persons who 
manufacture small quantities of the chemical solely for research and 
development, are not required to comply with the rule unless directed 
to do so by EPA in a subsequent Federal Register document if no 
manufacturer has submitted a notice of its intent to conduct testing. 
Under the original HAPs proposal, all other manufacturers (including 
importers) of HAPs chemicals would have been required to comply with 
the rule when promulgated (``initially comply'') (61 FR 33178, 33189-
33190).
    In the first amended HAPs proposal, EPA specified the timeframe 
during which manufacturing and processing volume calculations would be 
made to determine who would be subject to the rule (both those who 
would have to initially comply and others). EPA stated in the preamble 
and in the proposed regulatory text (40 CFR 799.5053 (a)(2)(ii), 
(a)(2)(iv), and (a)(2)(v)) that this timeframe consisted of the last 
complete corporate fiscal year prior to the publication of the final 
rule (62 FR 67466, 67470, 67481). EPA now proposes that the timeframe 
be changed to the last complete calendar year prior to the publication 
of the final rule or any successive complete calendar year prior to the 
end of the reimbursement period, as defined in 40 CFR 791.3(h). The 
Agency would base its determination concerning which persons would be 
subject to the rule on the amount of manufacturing (including 
importing) or processing of a HAP chemical at a facility during the 
last complete calendar year prior to the publication of the final rule 
or during any complete calendar year until the expiration of the rule 
at the end of the reimbursement period. In the past, EPA has covered 
persons under test rules where they manufactured (including imported) 
or processed a test rule chemical between the effective date of the 
rule and the end of the reimbursement period. See, e.g., 40 CFR 
799.1053(b)(1); 40 CFR 799.1560(b); 40 CFR 799.1575(b); 40 CFR 
799.1645(b); 40 CFR 799.1700(b); 40 CFR 799.2155(b). The Agency 
believes that determining which persons would be subject to the test 
rule based on the period during which the rule is in effect is more 
appropriate for purposes of obtaining the needed testing and 
reimbursement than restricting the timeframe to one year alone, as 
would have been the result under the first amended proposal.
    EPA is proposing to use the calendar year as the time period within 
which to measure chemical manufacturing (including importing) and 
processing rather than the corporate fiscal year as a more convenient 
time period for potentially regulated persons to determine whether they 
are subject to the rule. This approach would be consistent with 
reporting requirements in other regulations, such as the Toxic Release 
Inventory reporting regulations (40 CFR 372.30(a)), under the Emergency 
Planning and Community Right-To-Know Act (EPCRA), 42 U.S.C. 11023. EPA 
invites comment on this modification to the ``Persons Required To 
Test'' provisions of the first amended proposed rule.

B. Threshold and De Minimis Provisions

    As EPA discussed in its clarification of February 5, 1998 (63 FR 
5915, 5917), the language in both the preamble and proposed regulatory 
text of Sec. 799.5053 of the first amended proposal that indicates what 
persons would be subject to the HAPs test rule and when they would have 
to comply is ambiguous.
    Those persons who would be required to initially comply with the 
HAPs rule are: Any person who, during the last complete calendar year 
prior to the publication of the final rule in the Federal Register, and 
any person who, in any successive complete calendar year prior to the 
end of the reimbursement period, manufactures (including imports) at a 
particular facility any of the HAPs chemicals included in the first 
amended proposed rule in an amount of 25,000 lbs or more (regardless of 
the form of the HAP chemical, e.g., as a Class 1 substance, as a 
component of a mixture, as a byproduct, as an impurity, as a component 
of a Class 2 substance, or as an isolated intermediate). ``Naturally 
occurring substances,'' as described at 40 CFR 710.4(b), and non-
isolated intermediates, as defined at 40 CFR 704.3, are not to be 
considered in determining whether a person is responsible for HAP 
chemical testing. In determining whether the 25,000 lbs threshold has 
been met for a particular HAP chemical, persons are not to take into 
account the amount of a HAP chemical that is manufactured (including 
imported) as a component of a chemical substance or mixture at a 
concentration of less than 1 percent by weight of the chemical 
substance or mixture.
    For example, if a person manufactures 9,000,000 lbs of a petroleum 
refinery stream during a given calendar year at a particular facility, 
30,000 lbs of which is a HAP chemical that is a component of the 
stream, that person would not take into account this amount of HAP 
chemical when determining whether the 25,000 lbs threshold has been met 
for the year at that facility because the HAP chemical component 
consists of less than 1 percent by weight of the total stream. 
Similarly, if a person manufactures 500,000 lbs of a complex mixture 
during a given calendar year at a facility, 10,000 lbs of which is a 
HAP chemical byproduct that is a component of the complex mixture, that 
person would not be required to initially comply with the rule on the 
basis of its manufacture of the HAP chemical in the complex mixture 
alone. This result is due to the fact that, although the HAP chemical 
component consists of at least 1 percent by weight of the total complex 
mixture, the total amount of HAP chemical manufactured at that facility 
is less than 25,000 lbs. (Note that his answer assumes that the person 
is not manufacturing the same HAP in other forms at the same facility.) 
In this second amended proposal, EPA is proposing regulatory language 
(40 CFR 799.5053 (a)(2)(ii) and (a)(2)(iv)) that would replace the 
language that was proposed in the first amended proposed

[[Page 19697]]

rule at 40 CFR 799.5053 (a)(2)(ii), (a)(2)(iv) and (a)(2)(v) (62 FR 
67466, 67481).

C. Physical State of Chemical

    EPA is clarifying that the persons that would be subject to the 
proposed HAPs test rule, as amended, are those who manufacture 
(including import) or process a chemical included in the proposed rule, 
as amended, in any physical state (i.e., solid, liquid, or gas). 
Persons should refer to the Chemical Abstracts Service Registry Numbers 
in the proposed rule, as amended, to determine which chemicals would be 
covered under the rule.

IV. Public Record and Electronic Submissions

    The official record for this rulemaking, including the public 
version, which does not include any information claimed as CBI, has 
been established for this rulemaking under document control number 
(OPPTS-42187A; FRL-4869-1). This docket also includes all material and 
submissions filed under docket number OPPTS-42193 (FRL-5719-5), the 
record for the rulemaking for the TSCA test guidelines, and all 
material and submissions filed under docket number OPPTS-42187B (FRL-
4869-1), the record for the receipt of proposals for developing ECAs 
for alternative testing of HAPs chemicals. This record contains the 
basic information considered by EPA in developing this second amended 
proposed rule and appropriate Federal Register documents. The public 
version of this record, including printed, paper versions of electronic 
comments, is available for inspection from 12 noon to 4 p.m., Monday 
through Friday, excluding legal holidays. The public record is located 
in the TSCA Nonconfidential Information Center, Rm. NE-B607, 401 M St., 
SW., Washington, DC 20460.
    Electronic comments can be sent directly to EPA at:
    [email protected]
Electronic comments must be submitted as an ASCII file avoiding the use 
of special characters and any form of encryption. Comments and data 
will also be accepted on disks in WordPerfect 5.1/6.1 file format or 
ASCII file format. All comments and data in electronic form must be 
identified by document control number (OPPTS-42187A; FRL-4869-1). 
Electronic comments on this second amended proposal may be filed online 
at many Federal Depository Libraries.
    All comments which contain information claimed as CBI must be 
clearly marked as such. Three sanitized copies of any comments 
containing information claimed as CBI must also be submitted and will 
be placed in the public record for this rulemaking. Persons submitting 
information any portion of which they believe is entitled to treatment 
as CBI by EPA must assert a business confidentiality claim in 
accordance with 40 CFR 2.203(b) for each such portion. This claim must 
be made at the time that the information is submitted to EPA. If a 
submitter does not assert a confidentiality claim at the time of 
submission, EPA will make the information available to the public 
without further notice to the submitter. No CBI should be submitted 
electronically.

V. Regulatory Assessment Requirements

    EPA's analysis in the first amended proposed rule of the regulatory 
assessment requirements for the HAPs rulemaking (62 FR 67466, 67477-81) 
is not altered by the amendments proposed in this second amended 
proposed rule. The discussion provided in the first amended proposed 
rule regarding the applicable regulatory assessment requirements is 
still applicable. This second amended proposed rule includes new 
sections to address the requirements of Executive Order 12875 and the 
National Technology Transfer Advancement Act.

A. Economic Assessment

    In conjunction with the issuance of the first amended HAPs 
proposal, EPA prepared a revised economic assessment entitled 
``Economic Assessment for the Amended Proposed TSCA Section 4(a) Test 
Rule for 21 Hazardous Air Pollutants,'' OPPT/EETD/EPAB, November 14, 
1997. (See document referenced in Unit V.H.1 of the preamble to the 
first amended HAPs proposal (62 FR 67466, 67476), located in the docket 
for this rulemaking). This report evaluates the potential for 
significant economic impacts as a result of the testing on the HAPs 
chemicals required under the first amended HAPs proposal, which is 
identical to the testing required under this second amended HAPs 
proposal. Although the number of manufacturers (including importers) 
and processors subject to the HAPs test rule under the second amended 
proposal may be greater than under the first amended proposal, the 
conclusions of the economic assessment are not affected. The economic 
assessment analyzes the economic effect of testing on a chemical-by-
chemical basis by comparing unit test costs to the chemical sales 
price. (The analysis for carbonyl sulfide is similar, but uses the 
sales price of a related chemical. See U.S. EPA, ``Economic Assessment 
for the Amended Proposed TSCA Section 4(a) Test Rule for 21 Hazardous 
Air Pollutants.'') This measure of economic impact depends on total 
annualized test costs, total supply of the chemical, and the sales 
price of the chemical (none of which is affected by the second amended 
HAPs proposal). This measure is unrelated to the number of persons 
subject to the rule. Therefore, the Agency continues to believe that 
the HAPs test rule, if finalized according to this second amended 
proposal, will not impose any significant economic impact.

B. Executive Order 12866 and Executive Order 12898; Unfunded Mandates 
Reform Act; Executive Order 12875

    Because the overall costs associated with testing under this second 
amended HAPs proposal are expected to be the same as those associated 
with testing under the first amended proposal, the second amended 
proposal does not contain any provisions that would require additional 
consideration by the Office of Management and Budget (OMB) under 
Executive Order 12866, entitled ``Regulatory Planning and Review'' (58 
FR 51735, October 4, 1993) or Executive Order 12898, entitled ``Federal 
Actions to Address Environmental Justice in Minority Populations and 
Low-Income Populations'' (59 FR 7629, February 16, 1994). Similarly, 
the second amended proposal does not require any actions under Title II 
of the Unfunded Mandates Reform Act of 1995 (UMRA) (Pub. L. 104-4). The 
Agency's activities related to these regulatory assessment requirements 
are discussed in the original proposed rule (61 FR 33178, 33195-96). In 
addition, the obligations imposed by Executive Order 12875, entitled 
``Enhancing the Intergovernmental Partnership'' (58 FR 58093, October 
28, 1993) are addressed in the discussion of UMRA in the original 
proposed rule (61 FR 33178, 33196).

C. Regulatory Flexibility Act

    For the original proposed HAPs test rule, EPA determined under 
section 605(b) of the Regulatory Flexibility Act (RFA), 5 U.S.C. 601 et 
seq., that the HAPs test rule, if finalized as proposed, would not 
result in a significant impact on small businesses. See Unit XI.B. of 
the preamble to the original HAPs proposal (61 FR 33178, 33196). An 
additional document was prepared under the first amended proposal to 
provide information on small entity impacts. (See document referenced 
at

[[Page 19698]]

Unit V.H.3 of the preamble to the first amended HAPs proposal (62 FR 
67466, 67476-77)). The analysis contained in that document, which is in 
the record for this proposed rule, also applies to this second amended 
proposed rule. This analysis used the most recent single year of data 
available at the time of the analysis to provide further information on 
the potential economic impact of the proposed test rule on small 
entities. EPA believes that these data are representative of the 
universe of manufacturers and importers of the HAPs chemicals that 
would be subject to the second amended proposed rule.
    As indicated in the first amended proposal (62 FR 67466, 67479), 
EPA does not believe that the impacts described in the analysis 
constitute a significant economic impact on a substantial number of 
small entities. The analysis states that the worst-case estimate shows 
that, on a HAP chemical by HAP chemical basis, a total of 8 
manufacturers/importers (out of 365 manufacturers/importers initially 
burdened) may be affected by the rule. No manufacturers/importers for 
whom revenue data were available would be impacted by test costs that 
exceed 1 percent of their sales. For 8 manufacturers/importers whose 
revenues could not be determined, the size of the testing burden could 
not be determined and, therefore, the potential for impacts at greater 
than 1 percent of sales could not be ruled out. Nevertheless, in this 
context the rule would not likely have a significant economic impact on 
a substantial number of small entities because any impacts of 1 percent 
or greater would affect fewer than 100 small entities. While some small 
entities not identified in EPA's analysis may become subject in 
subsequent years as a result of the changes made in the second amended 
HAPs proposal, EPA believes that it is unlikely that sufficient numbers 
of small entities would begin manufacturing or importing the HAPs 
chemicals in sufficient amounts to alter the conclusions of this 
analysis.
    Therefore, the Agency continues to certify that the HAPs test rule, 
if finalized according to this second amended proposal, will not have a 
significant economic impact on a substantial number of small entities.
    Any comments regarding the impacts that this proposed rule may 
impose on small entities should be transmitted to the Agency in the 
manner specified under ``ADDRESSES'' at the beginning of this document.

D. Paperwork Reduction Act

    The information collection requirements associated with test rules 
under TSCA section 4(a) in general have been approved by OMB pursuant 
to the Paperwork Reduction Act, 44 U.S.C. 3501 et seq. (PRA), under OMB 
control number 2070-0033 (EPA Information Collection Request (ICR) No. 
1139). The information collection requirements contained in this second 
amended proposed rule, however, are not effective until the final rule 
is published, at which point the total estimated burden hours will be 
added to the total burden approved by OMB under control number 2070-
0033. An Agency may not conduct or sponsor, and a person is not 
required to respond to, a collection of information subject to OMB 
approval under the PRA, unless it has been approved by OMB and displays 
a currently valid OMB control number. The OMB control numbers for EPA's 
regulations, after initial display in the preamble of the final rules, 
are listed in 40 CFR part 9.
    The list of public reporting burdens for the collection of 
information for chemical substances under the first amended proposed 
HAPs test rule, as well as the figures for the total public reporting 
burden and the overall average per chemical (see Unit VI.D. of the 
preamble, ``Paperwork Reduction Act,'' 62 FR 67466, 67479-80), were 
different from the figures used in the original HAPs proposal (see Unit 
XI.C. of the preamble, ``Paperwork Reduction Act,'' 61 FR 33178, 
33196). However, the public reporting burdens under the first amended 
proposed HAPs test rule and the second amended proposed HAPs test rule 
are anticipated by EPA to be the same. The burdens calculated for the 
first amended proposal were based on the tests required for each 
chemical. The testing requirements are not changed by the second 
amended proposed rule.
    Comments are requested on the Agency's need for the information set 
out in the first amended HAPs proposal, the accuracy of the provided 
burden estimates, and any suggested methods for minimizing respondent 
burden, including through the use of automated collection techniques. 
Send comments to EPA as part of your overall comments on this proposed 
rule in the manner specified under ``ADDRESSES'' at the beginning of 
this document, or to the Director, OPPE Regulatory Information 
Division, U.S. Environmental Protection Agency (Mail Code 2137), 401 M 
Street, SW., Washington, DC 20460, with a copy to the Office of 
Information and Regulatory Affairs, Office of Management and Budget, 
725 17th St., N.W., Washington, DC 20503, marked ``Attention: Desk 
Officer for EPA.'' Please remember to include the OMB control number in 
any correspondence. In developing the final rule, the Agency will 
address any comments received regarding the information collection 
requirements contained in this proposal, as amended.

E. Executive Order 13045

    As stated in the first amended HAPs proposal (62 FR 67466, 67480-
81), the proposed HAPs test rule does not require special consideration 
by OMB pursuant to the terms of Executive Order 13045, entitled 
``Protection of Children from Environmental Health Risks and Safety 
Risks'' (62 FR 19885, April 23, 1997).

F. National Technology Transfer and Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (NTTAA), Pub. L. No. 104-113, section 12(d) (15 U.S.C. 272 
note), directs EPA to use voluntary consensus standards in its 
regulatory activities unless to do so would be inconsistent with 
applicable law or otherwise impractical. Voluntary consensus standards 
are technical standards (e.g., materials specifications, test methods, 
sampling procedures and business practices) that are developed or 
adopted by voluntary consensus standards bodies. The NTTAA requires EPA 
to provide Congress, through OMB, explanations when the Agency decides 
not to use available and applicable voluntary consensus standards.
    EPA is required under section 4 of TSCA to impose prescriptive test 
requirements in test rules developed under section 4 and to review 
their adequacy periodically. The testing that would be required under 
this rulemaking would be conducted according to enforceable test 
standards based on the health effects test guidelines (40 CFR part 799, 
subpart H) that are cross-referenced in the first amended HAPs proposal 
(62 FR 67466, 67467-67469, December 24, 1997). These guidelines are 
based on harmonized guidelines that were developed through a process 
that included informal opportunity for public input, and that are, in 
some cases, internationally accepted. The guidelines were issued on 
August 15, 1997 (62 FR 43820). Both the August 15, 1997 and the 
December 24, 1997 Federal Register documents discuss the background to 
the guidelines.
    The acute testing guideline is modified in the proposed regulatory 
text at Sec. 799.5053(b)(2) (62 FR 67466, 67484-

[[Page 19699]]

67485) to require the appraisal of pulmonary irritation during exposure 
to a HAP chemical through the use of the mouse respiratory sensory 
irritation assay method developed by the American Society for Testing 
and Materials (ASTM), a voluntary consensus standard body (ASTM. 
``Standard Test Method for Estimating Sensory Irritancy of Airborne 
Chemicals'' In: 1984 Annual Book of ASTM Standards. Water and 
Environmental Technology. Section 11. Volume 11.04 Designation E-981-
84, pp. 572-584 (1984)). This method assesses the breathing patterns of 
test animals.
    The testing of bronchoalveolar lavage fluid under the subchronic 
testing guideline is modified as described in the proposed regulatory 
text at Sec. 799.5053(b)(3)(ii) (62 FR 67466, 67485) to include a 
phagocytosis assay using the procedure of Burleson (Burleson, G.R. et 
al. ``Poly (I): poly (C)-enhanced alveolar peritoneal macrophage 
phagocytosis: Quantification by a new method utilizing fluorescent 
beads.'' Proceedings of the Society for Experimental Biology and 
Medicine. 184:468-476 (1987)) or Gilmour and Selgrade (Gilmour, G.I., 
and Selgrade, M.K. ``A Comparison of the Pulmonary Defenses against 
Streptococcal Infection in Rats and Mice Following O3 Exposure: 
Differences in Disease Susceptibility and Neutrophil Recruitment.'' 
Toxicology and Applied Pharmacology. 123:211-218 (1993)) to determine 
macrophage activity.
    EPA is not aware of any other potentially applicable voluntary 
consensus standards which needed to be considered in lieu of the 
guidelines at 40 CFR part 799, subpart H, that are cross-referenced in 
this rulemaking. The Agency invites comment on the potential use of 
voluntary consensus standards in this rulemaking, including the 
identification of and information about other standards which the 
Agency could consider.

List of Subjects in 40 CFR Part 799

    Environmental protection, Chemicals, Hazardous substances, 
Incorporation by reference, Reporting and recordkeeping requirements.

    Dated: April 13, 1998.

Lynn R. Goldman,
Assistant Administrator for Prevention, Pesticides and Toxic 
Substances.

    Accordingly, EPA is extending the comment period on the proposed 
rule and the first amended proposed rule from May 11, 1998 to June 22, 
1998.
    Therefore, it is proposed that 40 CFR chapter I, subchapter R, be 
amended as follows:

PART 799--[AMENDED]

    1. The authority citation for part 799 would continue to read as 
follows:

    Authority: 15 U.S.C. 2603, 2611, 2625.

    2. Section 799.5053, as proposed to be added at 62 FR 67481-67485, 
December 24, 1997, is amended by revising paragraphs (a)(2)(ii) and 
(a)(2)(iv) and removing paragraph (a)(2)(v) as follows:
    (Note: The regulatory text changes proposed in this second 
amended proposal supersede the corresponding changes proposed in the 
first amended proposal. All other regulatory text changes proposed 
in the first amended proposal that are not changed by this second 
amended proposal continue to apply to this rulemaking.)

Sec. 799.5053  Chemical testing requirements for hazardous air 
pollutants.

    (a) General testing provisions. * * *
*        *        *        *        *
    (2) Persons required to submit study plans, conduct tests, and 
submit data. * * *
*        *        *        *        *
    (ii) All persons who, during the last complete calendar year prior 
to the effective date specified in Table 1 in paragraph (a)(6) of this 
section or in any successive complete calendar year prior to the end of 
the reimbursement period, as defined at 40 CFR 791.3(h), manufacture 
(including import, manufacture as a byproduct as defined in 40 CFR 
791.3(c), and manufacture, including import, as an impurity as defined 
in 40 CFR 790.3) or process or intend to manufacture or process any 
chemical substance specified in Table 1 in the form of a Class 1 
substance (as described in 40 CFR 720.45(a)(1)(i)), or a component of a 
Class 2 substance (as described in 40 CFR 720.45(a)(1)(i)) or mixture 
(as defined in TSCA section 3(8)), but not as a component of a 
naturally-occurring substance (as defined in 40 CFR 710.4(b)) or a non-
isolated intermediate (as defined in 40 CFR 704.3), at a facility 
shall, with respect to such substance: submit letters of intent to 
conduct testing, submit study plans, conduct testing under TSCA Good 
Laboratory Practice Standards, and submit data, as specified in this 
section and part 792 of this chapter, or submit exemption applications, 
as specified in part 790 of this chapter.
*        *        *        *        *
    (iv) Manufacturers (including importers) of a chemical substance 
specified in Table 1 who, during the last complete calendar year prior 
to the effective date specified in Table 1 or in any successive 
complete calendar year prior to the end of the reimbursement period, at 
no facility manufactured (including imported) such substance in an 
amount equal to or in excess of 25,000 lbs must comply with the 
requirements of the rule with regard to such substance only if directed 
to do so by EPA in a subsequent notice if no manufacturer has submitted 
a notice of its intent to conduct testing. A chemical substance 
specified in Table 1 that is manufactured (including imported) as a 
component of another chemical substance or mixture in which the 
proportion of the substance specified in Table 1 is less than one 
percent by weight is not to be taken into account in determining 
whether the 25,000 lbs threshold specified in this paragraph has been 
met.
*        *        *        *        *

[FR Doc. 98-10494 Filed 4-20-98; 8:45 am]
BILLING CODE 6560-50-F
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