[Federal Register Volume 64, Number 79 (Monday, April 26, 1999)]
[Rules and Regulations]
[Pages 20189-20198]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-10099]



[[Page 20189]]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[AD-FRL-6330-3]
RIN 2060-AC19


National Emission Standards for Hazardous Air Pollutants for 
Source Categories: Organic Hazardous Air Pollutants From the Synthetic 
Organic Chemical Manufacturing Industry and Other Processes Subject to 
the Negotiated Regulation for Equipment Leaks; Technical Amendments

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; technical amendments.

-----------------------------------------------------------------------

SUMMARY: This document amends certain portions of the final regulation 
``National Emission Standards for Hazardous Air Pollutants for Source 
Categories: Organic Hazardous Air Pollutants from the Synthetic Organic 
Chemical Manufacturing Industry and Other Processes Subject to the 
Negotiated Regulation for Equipment Leaks,'' which was published on 
January 17, 1997. This rule is commonly known as the Hazardous Organic 
NESHAP or the HON.
    These amendments to the rule will not change the basic control 
requirements of the rule or the level of health protection it provides. 
The rule requires new and existing major sources to control emissions 
of hazardous air pollutants to the level reflecting application of the 
maximum achievable control technology.

EFFECTIVE DATE: April 26, 1999.

ADDRESSES: Docket. Docket Numbers A-90-19, A-90-20, A-90-21, A-90-22, 
and A-90-23 contain the supporting information for the original NESHAP 
and this action. These dockets are available for public inspection and 
copying between 8:00 a.m. and 5:30 p.m., Monday through Friday, at the 
EPA's Air and Radiation Docket and Information Center, Waterside Mall, 
Room M-1500, first floor, 401 M Street SW, Washington, DC 20460, or by 
calling (202) 260-7548 or 260-7549. A reasonable fee may be charged for 
copying.

FOR FURTHER INFORMATION CONTACT: For questions, contact Dr. Janet S. 
Meyer, Coatings and Consumer Products Group, at telephone (919) 541-
5254 or e-mail [email protected], or contact Mary Tom Kissell, Waste 
and Chemical Processes Group, at telephone (919) 541-4516 or e-mail 
[email protected]. The mailing address for both contacts is Emission 
Standards Division (MD-13), U.S. Environmental Protection Agency, 
Research Triangle Park, North Carolina 27711.

SUPPLEMENTARY INFORMATION:

I. Regulated Entities and Background Information

A. Regulated Entities

    The regulated category and entities affected by this action 
include:

------------------------------------------------------------------------
                Category                  Examples of regulated entities
------------------------------------------------------------------------
Industry...............................  Synthetic organic chemical
                                          manufacturing industry (SOCMI)
                                          units, e.g., producers of
                                          benzene, toluene, or any other
                                          chemical listed in Table 1 of
                                          40 CFR part 63, subpart F.
------------------------------------------------------------------------

    This table is not intended to be exhaustive but, rather, provides a 
guide for readers regarding entities likely to be interested in the 
revisions to the regulation affected by this action. Entities 
potentially regulated by the HON are those which produce as primary 
intended products any of the chemicals listed in table 1 of 40 CFR part 
63, subpart F and are located at facilities that are major sources as 
defined in section 112 of the Clean Air Act. Potentially regulated 
entities generally are companies that manufacture industrial organic 
chemicals and cyclic organic crude and intermediates. To determine 
whether your facility is regulated by this action, you should carefully 
examine all of the applicability criteria in 40 CFR 63.100. If you have 
questions regarding the applicability of this action to a particular 
entity, consult the person listed in the preceding FOR FURTHER 
INFORMATION CONTACT section.

B. Background on the Rule

    On April 22, 1994 (59 FR 19402), and June 6, 1994 (59 FR 29196), 
the EPA published in the Federal Register the NESHAP for the SOCMI, and 
for several other processes subject to the equipment leaks portion of 
the rule. These regulations were promulgated as subparts F, G, H, and I 
in 40 CFR part 63, and are commonly referred to as the hazardous 
organic NESHAP, or the HON. Since the April 22, 1994 notice, there have 
been several amendments to clarify various aspects of the rule. Readers 
should see the following Federal Register documents for more 
information: September 20, 1994 (59 FR 48175); October 24, 1994 (59 FR 
53359); October 28, 1994 (59 FR 54131); January 27, 1995 (60 FR 5321); 
April 10, 1995 (60 FR 18020); April 10, 1995 (60 FR 18026); December 
12, 1995 (60 FR 63624); February 29, 1996 (61 FR 7716); June 20, 1996 
(61 FR 31435); August 26, 1996 (61 FR 43698); December 5, 1996 (61 FR 
64571); January 17, 1997 (62 FR 2721); August 22, 1997 (62 FR 44608); 
and December 9, 1998 (63 FR 67787).

II. Summary of Corrections

    Today's changes are described in Table 2 to this preamble for the 
convenience of the reader.

------------------------------------------------------------------------
   Section 40 CFR, part 63                       Change
------------------------------------------------------------------------
63.100(g)(4).................  Changes ``ceasing'' to ``ceases'' for
                                grammatical reasons and makes cross
                                reference correction by revising
                                ``(g)(2)(i) and (g)(2)(iii) of this
                                section'' to ``(g)(2)(i) and (g)(2)(ii)
                                of this section.''
63.100(h)(3).................  Makes cross reference correction.
63.100(i)(5).................  Makes cross reference correction.
63.116(c)(3)(iii)(B).........  Text currently reads ``[t]he
                                concentration corrected to 3 percent
                                oxygen (Cc) shall be computed using
                                either of the following equations . .
                                .'' Only one equation follows this text
                                and the sentence was changed to reflect
                                this.
63.129(a)(4)(ii).............  The first sentence was inadvertently
                                omitted from the final rule. Today's
                                amendments corrects this oversight.
63.133(h)....................  Delay of repair provisions are intended
                                to apply to any inspection done for the
                                section. Today's action removes cross
                                references to specific paragraphs.
63.134(b)(2)(ii)(B)..........  Makes cross reference correction.
63.139(d)(4).................  This paragraph exempted certain boilers,
                                process heaters, and incinerators from
                                performance test or design evaluation
                                requirements. Today's revisions adds an
                                exemption from the monitoring
                                requirements of Sec.  63.143 for these
                                cases.
63.145(d)(6).................  Removes an equation that is not used in
                                the compliance demonstration.

[[Page 20190]]

 
63.145(i)....................  Adds paragraph (i) introductory text.
                                This paragraph was inadvertently deleted
                                in the December 9, 1998 Federal Register
                                notice. This paragraph was previously
                                incorrectly designated as Sec.
                                63.145(h)(2)(iii).
63.145(c)(2).................  Replaces ``flow meter'' with ``flow
                                measurement device.'' This makes it
                                consistent with EPA's intent and
                                terminology used elsewhere.
63.146(b)(8) introductory      Makes cross reference corrections by
 text.                          revising ``Sec.  63.138(b)(1)(iii)(C),
                                (c)(1)(iii)(D), (d), or (e) of this
                                subpart'' to ``Sec.  63.138(b)(1),
                                (c)(1), (d), (e), (f), or (g) of this
                                subpart.''
63.146(b)(8)(i)..............  Adds a sentence clarifying that when
                                using the design steam stripper option
                                specified in Sec.  63.138(d) to comply,
                                some reports are not required.
63.147(b)(4).................  Makes cross reference corrections by
                                revising ``Item 1 and Item 2 of table 12
                                of this subpart'' to Item 1 and Item 3
                                of table 12 of this subpart.''
63.147(b)(5).................  Makes cross reference corrections by
                                revising ``paragraphs (e) and (g) of
                                this subpart'' to ``paragraph (e) of
                                this subpart'' and revising ``Item 3 of
                                table 12 of this subpart'' to Item 2 of
                                table 12 of this subpart.''
63.148(b)(3).................  Removes the requirement for a Method 21
                                initial inspection. Initial visual
                                inspection is still required. This makes
                                it consistent with the requirements in
                                Secs.  63.133 through 63.137 and EPA's
                                intent.
63.148(c), introductory text.  Removes words ``fixed roof,'' ``cover,''
                                and ``enclosure'' from text to remove
                                requirement for Method 21 initial
                                inspection. Amendments make the rule
                                text consistent with the requirements in
                                table 11 of subpart G.
63.148(c)(4)(ii).............  Makes cross reference corrections.
63.150(g)(5), (h)(5), and      Today's action:
 (j)(2).
                               --Makes cross reference corrections
                                throughout the wastewater portions of
                                this section.
                               --For consistency with the wastewater
                                sections, replaces: ``organic HAP'' with
                                ``table 9 HAP'; ``point of generation''
                                with ``point of determination''; and
                                ``VOHAP'' with ``table 9 HAP.''
                               --Replaces Sec.  63.150(g)(5)(i)(A)(1)
                                and (2) with a reference to the sampling
                                plan requirements in Sec.
                                63.144(b)(5)(ii).
                               --Replaces equation in Sec.
                                63.150(h)(5)(v)(A) with correct
                                equation. The Federal Register printed
                                the wrong equation; it printed the
                                equation in Sec.  63.150(h)(5)(v)(B)
                                twice.
                               --Adds reference to Sec.  63.145(a)(3)
                                and (a)(4) as to what is meant by
                                ``representative conditions.''
Sec.  63.151(j)(3)...........  Changes the reference to ``(e) of this
                                section'' to ``(e)(1) through (e)(5) of
                                this section'' and specifies the
                                information shall be submitted to the
                                EPA regional office where the source is
                                located.
Sec.  63.152(c)(2)(ii)(C)....  Makes no conceptual changes: revisions
                                are clarifying edits.
Sec.  63.152(d)(1)...........  Removes ``semi-annual'' from the second
                                sentence and makes the corresponding
                                cross reference change. This correction
                                clarifies the reporting obligations for
                                instances where a source does not follow
                                its start-up, shut-down, and malfunction
                                plan. The correction also makes this
                                paragraph consistent with Sec.
                                63.10(d)(5).
Table 4 to subpart G.........  Makes terms consistent with rule text by
                                replacing ``mass flow'' with ``mass or
                                volumeric flow.''
Table 7 to subpart G.........  Makes terms consistent with rule text by
                                replacing ``mass flow'' with ``mass or
                                volumeric flow.''
63.160(a)....................  Replaces the word ``systems'' with
                                ``closed vent systems.'' The change
                                revises the paragraph to use a defined
                                term and is the intended meaning of the
                                text.
63.163(b)(1).................  Makes cross reference correction.
63.164(h)....................  Makes cross reference correction.
63.173(j)....................  Makes cross reference correction.
63.181(b)(7).................  Makes cross reference correction and
                                corresponding grammatical change by
                                replacing ``through'' with ``and.''
63.181(g)(3).................  Makes cross reference correction and
                                corresponding grammatical change by
                                replacing ``through'' with ``and.''
------------------------------------------------------------------------

III. Administrative Requirements

A. Good Cause Finding

    By promulgating these technical corrections directly as a final 
rule, the EPA is foregoing an opportunity for public comment on a 
notice of proposed rulemaking. Section 553(b) of title 5 of the United 
States Code and section 307(b) of the CAA permit an agency to forego 
notice and comment when ``the agency for good cause finds (and 
incorporates the finding and a brief statement of reasons therefore in 
the rules issued) that notice and public procedure thereon are 
impracticable, unnecessary, or contrary to the public interest.'' The 
EPA finds that notice and comment regarding these minor technical 
corrections are unnecessary due to their noncontroversial nature and 
because they do not substantively change the requirements of the HON. 
The EPA finds that this constitutes good cause under 5 U.S.C. 553(b) 
for a determination that the issuance of a notice of proposed 
rulemaking is unnecessary.

B. Executive Orders 12866, 13045, 13083, 13084, Unfunded Mandates 
Reform Act, Regulatory Flexibility Act, and Administrative Procedure 
Act

    Under Executive Order 12866 (58 FR 51735, October 4, 1993), this 
action is not a ``significant regulatory action'' and is therefore not 
subject to review by the Office of Management and Budget. In addition, 
this action does not impose any enforceable duty, contain any unfunded 
mandate, or impose any significant or unique impact on small 
governments as described in the Unfunded Mandates Reform Act of 1995 
(Public Law 104-4). This rule also does not require prior consultation 
with State, local, and tribal government officials as specified by 
Executive Order 12875 (58 FR 58093, October 28, 1993) or Executive 
Order 13084 (63 FR 27655 (May 10, 1998), or involve special 
consideration of environmental justice related issues as required by 
Executive Order 12898 (59 FR 7629, February 16, 1994). Because this 
action is not subject to notice-and-comment requirements under the 
Administrative Procedure Act

[[Page 20191]]

or any other statute, it is not subject to the regulatory flexibility 
provisions of the Regulatory Flexibility Act (5 U.S.C. 601 et seq.). 
This rule also is not subject to Executive Order 13045 (62 FR 19885, 
April 23, 1997) because EPA interprets E.O. 13045 as applying only to 
those regulatory actions that are based on health or safety risks, such 
that the analysis required under section 5-501 of the Order has the 
potential to influence the regulation. This rule is not subject to E.O. 
13045 because it does not establish an environmental standard intended 
to mitigate health or safety risks. EPA's compliance with these 
statutes and Executive Orders for the underlying rule is discussed in 
the December 9, 1998 Federal Register document.
    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. Section 808 allows the issuing agency to make a good 
cause finding that notice and public procedure is impracticable, 
unnecessary or contrary to the public interest. This determination must 
be supported by a brief statement. 5 U.S.C. 808(2). As stated 
previously, EPA has made such a good cause finding, including the 
reasons therefor, and established an effective date of April 26, 1999. 
EPA will submit a report containing this rule and other required 
information to the U.S. Senate, the U.S. House of Representatives, and 
the Comptroller General of the United States prior to publication of 
the rule in the Federal Register. This action is not a ``major rule'' 
as defined by 5 U.S.C. 804(2).

C. National Technology Transfer and Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (the NTTAA), Public Law 104-113, section 12(d) (15 U.S.C. 
272 note), directs the 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, business practices, etc.) that are developed or 
adopted by voluntary consensus standard bodies. The NTTAA requires the 
EPA to provide Congress, through OMB, explanations when the Agency 
decides not to use available and applicable voluntary consensus 
standards.
    This regulatory action makes technical amendments, such as cross 
reference corrections and does not involve any technical standards that 
would require the Agency to consider voluntary consensus standards 
pursuant to section 12(d) of the NTTAA.

List of Subjects in 40 CFR Part 63

    Environmental protection, Air pollution control, Hazardous 
substances, Intergovernmental relations, Reporting and recordkeeping 
requirements.

    Dated: April 12, 1999.
Robert Perciasepe,
Assistant Administrator for Air and Radiation.

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

PART 63--[AMENDED]

    1. The authority citation for part 63 continues to read as follows:

    Authority: 42 U.S.C. 7401 et seq.

    2. Section 63.100 is amended as follows:
    a. By revising paragraph (g)(4);
    b. In paragraph (h)(3), by revising the reference to ``(h)(2)(iv) 
of this section'' to read ``(h)(2)(iii) of this section'; and
    c. In paragraph (i)(5), by revising the reference to ``(i)(2)(iv) 
of this section'' to read ``(i)(2)(iii) of this section.''
    The revision to paragraph (g)(4) reads as follows:


Sec. 63.100  Applicability and designation of source.

* * * * *
    (g) * * *
    (4) If the storage vessel begins receiving material from (or 
sending material to) another chemical manufacturing process unit, or 
ceases to receive material from (or send material to) a chemical 
manufacturing process unit, or if the applicability of this subpart F 
and subpart G of this part to a storage vessel has been determined 
according to the provisions of paragraphs (g)(2)(i) and (g)(2)(ii) of 
this section and there is a change so that the predominant use may 
reasonably have changed, the owner or operator shall reevaluate the 
applicability of this subpart to the storage vessel.
* * * * *
    3. Section 63.116 is amended by revising paragraph (c)(3)(iii)(B) 
to read as follows:


Sec. 63.116  Process vent provisions--performance test methods and 
procedures to determine compliance.

* * * * *
    (c) * * *
    (3) * * *
    (iii) * * *
    (B) The concentration corrected to 3 percent oxygen (Cc) 
shall be computed using the following equation:
[GRAPHIC] [TIFF OMITTED] TR26AP99.003

Where:

Cc=Concentration of TOC or organic HAP corrected to 3 
percent oxygen, dry basis, parts per million by volume.
Cm=Concentration of TOC (minus methane and ethane) or 
organic HAP, dry basis, parts per million by volume.
%02d=Concentration of oxygen, dry basis, percent by volume.
* * * * *
    4. Section 63.129 is amended by revising paragraph (a)(4)(ii) to 
read as follows:


Sec. 63.129  Transfer operations provisions--reporting and 
recordkeeping for performance tests and notification of compliance 
status.

    (a)* * *
    (4) * * *
    (ii) The percent reduction of total organic HAP or TOC achieved by 
the control device determined as specified in Sec. 63.128(a) of this 
subpart, or the concentration of total organic HAP or TOC (parts per 
million by volume, by compound) determined as specified in 
Sec. 63.128(a) of this subpart at the outlet of the control device. For 
combustion devices, the concentration shall be reported on a dry basis 
corrected to 3 percent oxygen.
* * * * *
    5. Section 63.133 is amended by revising the second sentence of 
paragraph (h) to read as follows:


Sec. 63.133  Process wastewater provisions--wastewater tanks.

* * * * *
    (h) * * * If a failure that is detected during inspections required 
by this section cannot be repaired within 45 calendar days and if the 
vessel cannot be emptied within 45 calendar days, the owner or operator 
may utilize up to 2 extensions of up to 30 additional calendar days 
each. * * *
    6. In Sec. 63.134, paragraph (b)(2)(ii)(B) is amended by revising 
the reference to ``(b)(2)(i) of this section'' to read ``(b)(2)(ii)(A) 
of this section.''

[[Page 20192]]

    7. Section 63.139 is amended by revising paragraph (d)(4) 
introductory text to read as follows:


Sec. 63.139  Process wastewater provisions--control devices.

* * * * *
    (d) * * *
    (4) An owner or operator using any control device specified in 
paragraphs (d)(4)(i) through (d)(4)(iv) of this section is exempt from 
the requirements in paragraphs (d)(1) through (d)(3) of this section 
and from the requirements in Sec. 63.6(f) of subpart A of this part, 
and from the requirements of paragraph (e) of this section.
* * * * *
    8. Section 63.145 is amended as follows:
    a. In paragraph (d)(6), by removing and reserving equation WW5;
    b. By adding paragraph (i) introductory text; and
    c. By revising paragraph (c)(2).
    The addition of paragraph (i) introductory text and the revision of 
paragraph (c)(2) read as follows:


Sec. 63.145  Process wastewater provisions--test methods and procedures 
to determine compliance.

* * * * *
    (c) * * *
    (2) Flow rate. The flow rate of the entering and exiting wastewater 
streams shall be determined using inlet and outlet flow measurement 
devices, respectively. Where the outlet flow is not greater than the 
inlet flow, a flow measurement device shall be used, and may be used at 
either the inlet or outlet. Flow rate measurements shall be taken at 
the same time as the concentration measurements.
* * * * *
    (i) Performance tests for control devices other than flares. This 
paragraph applies to performance tests that are conducted to 
demonstrate compliance of a control device with the efficiency limits 
specified in Sec. 63.139(c). If complying with the 95-percent reduction 
efficiency requirement, comply with the requirements specified in 
paragraphs (i)(1) through (i)(9) of this section. If complying with the 
20 ppm by volume requirement, comply with the requirements specified in 
paragraphs (i)(1) through (i)(6) and (i)(9) of this section. The 20 ppm 
by volume limit or 95-percent reduction efficiency requirement shall be 
measured as either total organic hazardous air pollutants or as TOC 
minus methane and ethane.
* * * * *
    9. Section 63.146 is amended by revising paragraph (b)(8) 
introductory text and by adding two sentences to the end of paragraph 
(b)(8)(i) introductory text to read as follows:


Sec. 63.146  Process wastewater provisions--reporting.

* * * * *
    (8) For each treatment process used to comply with 
Sec. 63.138(b)(1), (c)(1), (d), (e), (f), or (g) of this subpart, the 
owner or operator shall submit the information specified in paragraphs 
(b)(8)(i) and (b)(8)(ii) of this section.
    (i) * * * An owner or operator using the design steam stripper 
compliance option specified Sec. 63.138(d) of this subpart does not 
have to submit the information specified in paragraph (b)(8)(i)(A) or 
(b)(8)(i)(B) of this section. However, the monitoring requirements 
specified in Item 2 of table 12 of this subpart still apply.
* * * * *
    10. Section 63.147 is amended by revising paragraphs (b)(4) and 
(b)(5) to read as follows:


Sec. 63.147  Process wastewater provisions--recordkeeping.

* * * * *
    (b) * * *
    (4) For Item 1 and Item 3 of table 12 of this subpart, the owner or 
operator shall keep the records approved by the Administrator.
    (5) Except as provided in paragraph (e) of this section, continuous 
records of the monitored parameters specified in Item 2 of table 12 and 
table 13 of this subpart, and in Sec. 63.143(e)(2) of this subpart.
* * * * *
    11. Section 63.148 is amended by revising paragraph (b)(3); 
revising paragraph (c) introductory text and revising the second 
sentence in paragraph (c)(4)(ii) to read as follows:


Sec. 63.148  Leak inspection provisions.

* * * * *
    (b) * * *
    (3) For each fixed roof, cover, and enclosure, the owner or 
operator shall conduct initial visual inspections and semi-annual 
visual inspections for visible, audible, or olfactory indications of 
leaks as specified in Secs. 63.133 through 63.137 of this subpart.
    (c) Each vapor collection system and closed vent system shall be 
inspected according to the procedures specified in paragraphs (c)(1) 
through (c)(5) of this section.
    (4) * * *
    (ii) * * * A calibration gas other than methane in air may be used 
if the instrument does not respond to methane or if the instrument does 
not meet the performance criteria specified in paragraph (c)(2)(i) of 
this section. * * *
* * * * *
12. Section 63.150 is amended as follows:

    a. By revising paragraphs (g)(5) and (h)(5);
    b. By adding a sentence to the end of the introductory text to 
paragraph (j)(2); and
    c. By revising paragraphs (j)(2)(ii)(B) and (m)(5)(i) to read as 
follows:


Sec. 63.150  Emissions averaging provisions.

* * * * *
    (g) * * *
    (5) Emissions from wastewater shall be calculated as follows:
    (i) The following equation shall be used for each wastewater stream 
i to calculate EWWic:

[GRAPHIC] [TIFF OMITTED] TR26AP99.004

where:
EWWic = Monthly wastewater stream emission rate if 
wastewater stream i is controlled by the reference control technology, 
megagrams per month.
Qi = Average flow rate for wastewater stream i, as 
determined by the procedure in Sec. 63.144(c)(3), liters per minute.
Hi = Number of hours during the month that wastewater stream 
i was generated, hours per month.
s = Total number of table 9 HAP in wastewater stream i.

[[Page 20193]]

Frm = Fraction removed of table 9 HAP m in wastewater, from 
table 9, dimensionless.
Fem = Fraction emitted of table 9 HAP m in wastewater, from 
table 34, dimensionless.
HAPim = Average concentration of table 9 HAP m in wastewater 
stream i, parts per million by weight.

    (A) HAPim shall be determined for the point of 
determination or, at a location downstream of the point of 
determination and adjusted according as specified in Sec. 63.144(b)(6) 
of this subpart, by developing and using the sampling plan specified in 
Sec. 63.144(b)(5)(ii) of this subpart. The samples collected may be 
analyzed by any of the methods specified in Sec. 63.144(b)(5)(i)(B) 
through (b)(5)(i)(F) of this subpart. Concentration measurements based 
on Method 305 shall be adjusted by dividing each concentration by the 
compound-specific Fm factor listed on table 34 of this subpart. 
Concentration measurements other than Method 305 shall not be adjusted 
by the compound-specific Fm factor listed in table 34 of this subpart.
    (B) Values for Qi, HAPim, and Cim 
shall be determined during a performance test conducted under 
representative conditions as specified in Sec. 63.145(a)(3) and (a)(4) 
of this subpart. The average value obtained from three test runs shall 
be used. The values of Qi, HAPim, and 
Cim shall be established in the Notification of Compliance 
Status and must be updated as provided in paragraph (g)(5)(i)(C) of 
this section.
    (C) If there is a change to the process or operation such that the 
previously measured values of Qi, HAPim, and 
Cim are no longer representative, a new performance test 
shall be conducted to determine new representative values of 
Qi, HAPim, and Cim. These new values 
shall be used to calculate debits and credits from the time of the 
change forward, and the new values shall be reported in the next 
Periodic Report.
    (ii) The following equation shall be used to calculate 
EWWiACTUAL for each wastewater stream i that is not managed 
according to the provisions for waste management units of Secs. 63.133 
through 63.137 of this subpart, as applicable, which specify equipment 
and work practices for suppressing and controlling vapors. 
Qi, Hi, s, Fem, and HAPim 
are as defined and determined according to paragraph (g)(5)(i) of this 
section.
[GRAPHIC] [TIFF OMITTED] TR26AP99.005

Where:
EWWiACTUAL = Monthly wastewater stream emission rate if 
wastewater stream i is uncontrolled or is controlled to a level less 
stringent than the reference control technology, megagrams per month.
    (iii) The following equation shall be used to calculate 
EWWiACTUAL for each wastewater stream i that is managed 
according to the requirements of Secs. 63.133 through 63.137 of this 
subpart, as applicable, and wastewater stream i is uncontrolled or is 
controlled to a level less stringent than the reference control 
technology (for the purposes of the wastewater emissions averaging 
provisions, the term control is used to mean treatment). Qi, 
Hi, s, Fem, and HAPim are as defined 
and determined according to paragraph (g)(5)(i) of this section.
[GRAPHIC] [TIFF OMITTED] TR26AP99.006

Where:

EWWiACTUAL = Monthly wastewater stream emission rate if 
wastewater stream i is uncontrolled or is controlled to a level less 
stringent than the reference control technology, megagrams per month.
PRim = The efficiency of the treatment process, or series of 
treatment processes, which treat wastewater stream i, in reducing the 
emission potential of table 9 HAP m in wastewater, dimensionless, as 
calculated by:
[GRAPHIC] [TIFF OMITTED] TR26AP99.007

Where:
HAPim-in = Average concentration of table 9 HAP m, parts per 
million by weight, as defined and determined according to paragraph 
(g)(5)(i) of this section, in the wastewater entering the first 
treatment process in the series.
HAPim-out = Average concentration of table 9 HAP m, parts 
per million by weight, as defined and determined according to paragraph 
(g)(5)(i) of this section, in the wastewater exiting the last treatment 
process in the series.
Ri = Reduction efficiency of the device used to control any 
vapor streams emitted and collected from wastewater stream i during 
treatment, dimensionless, as determined according to the procedures in 
Sec. 63.145(i) or (j) of this subpart.
* * * * *
    (h) * * *
    (5) Emissions from wastewater shall be determined as follows:
    (i) EWW1ic shall be calculated according to the equation 
for EWWic in paragraph (g)(5)(i) of this section.
    (ii) EWW2iBASE shall be calculated according to the 
equation for EWWiACTUAL in paragraph (g)(5)(ii) of this 
section for each Group 2 wastewater stream i, which on November 15, 
1990, was not managed according to the requirements of Secs. 63.133 
through 63.137 of this subpart, as applicable.
    (iii) EWW2iBASE shall be calculated according to the 
equation for EWWiACTUAL in paragraph (g)(5)(iii) of this 
section for each Group 2 wastewater stream i, which on November 15, 
1990, was managed according to the requirements of Secs. 63.133 through 
63.137 of this subpart, as applicable, and was uncontrolled or 
controlled to a level less stringent than the reference control 
technology.

[[Page 20194]]

    (iv) For Group 2 wastewater streams that are managed according to 
the requirements of Secs. 63.133 through 63.137 of this subpart, as 
applicable, EWW2iACTUAL shall be calculated as follows:
    (A) EWW2iACTUAL shall be calculated according to the 
equation for EWWiACTUAL in paragraph (g)(5)(iii) of this 
section for each Group 2 wastewater stream i that is controlled to a 
level less stringent than, or equivalent to, the reference control 
technology.
    (B) EWW2iACTUAL shall be calculated according to the 
procedures for calculating EWW1iACTUAL in paragraph 
(h)(5)(v) of this section for each Group 2 wastewater stream that is 
controlled to a level more stringent than the reference control 
technology.
    (v) The following equations for EWW1iACTUAL shall be used to 
calculate emissions from each Group 1 wastewater stream i that is 
managed according to the requirements of Secs. 63.133 through 63.137 of 
this subpart, as applicable, and is controlled to a level more 
stringent than the reference control technology.
    (A) If the Group 1 wastewater stream i is controlled using a 
treatment process or series of treatment processes with an approved 
nominal reduction efficiency in the concentration of table 9 HAP for 
stream i greater than that of the design steam stripper specified in 
Sec. 63.138(d) of this subpart, and the control device used to reduce 
table 9 HAP emissions from the vapor stream(s) vented from the 
treatment process(es) achieves a percent reduction equal to 95 percent, 
the following equation shall be used. All terms in this equation are as 
defined and determined in paragraph (g)(5) of this section.
[GRAPHIC] [TIFF OMITTED] TR26AP99.008

    (B) If the Group 1 wastewater stream i is not controlled using a 
treatment process or series of treatment processes with a nominal 
reduction efficiency in the table 9 HAP concentration greater than that 
of the design steam stripper specified in Sec. 63.138(d) of this 
subpart, but the vapor stream(s) vented from the treatment process(es) 
are controlled using a device with an approved nominal efficiency 
greater than 95 percent, the following equation shall be used. All 
terms other than nominal efficiency are as defined and determined in 
paragraph (g)(5) of this section.
[GRAPHIC] [TIFF OMITTED] TR26AP99.009

    (C) If the Group 1 wastewater stream i is controlled using a 
treatment process or series of treatment processes with an approved 
nominal reduction efficiency in the table 9 HAP concentration greater 
than that of the design steam stripper specified in Sec. 63.138(d) of 
this subpart, and the vapor stream(s) vented from the treatment process 
are controlled using a device with an approved nominal efficiency 
greater than 95 percent, the following equation shall be used. All 
terms other than nominal efficiency are as defined and determined in 
paragraph (g)(5) of this section.
[GRAPHIC] [TIFF OMITTED] TR26AP99.010

* * * * *
    (j) * * *
    (2) * * * When the term ``organic HAP'' is used in 
Sec. 63.150(j)(2) in reference to wastewater emission points, the term 
``table 9 HAP'' shall apply for the purposes of this paragraph.
* * * * *
    (ii) * * *
    (B) For wastewater, EB shall be calculated as follows:
    [GRAPHIC] [TIFF OMITTED] TR26AP99.011
    
Where:

n = Number of wastewater streams.
QBi = Average flow rate for wastewater stream i before the 
pollution prevention measure, defined and determined according to 
paragraph

[[Page 20195]]

(g)(5)(i) of this section, liters per minute, before implementation of 
the pollution prevention measure.
HBi = Number of hours per month that wastewater stream i was 
discharged before the pollution prevention measure, hours per month.
s = Total number of table 9 HAP in wastewater stream i.
Fem = Fraction emitted of table 9 HAP m in wastewater of 
this subpart, dimensionless.
HAPBim = Average concentration of table 9 HAP m in 
wastewater stream i, defined and determined according to paragraph 
(g)(5)(i) of this section, before the pollution prevention measure, 
parts per million by weight, as measured before the implementation of 
the pollution measure.
* * * * *
    (m) * * *
    (5) * * *
    (i) For wastewater treatment processes, conduct tests as specified 
in Sec. 63.138(j) of this subpart.
* * * * *
    13. Section 63.151 is amended by revising paragraph (j)(3) to read 
as follows:


Sec. 63.151  Initial notification.

* * * * *
    (j) * * *
    (3) Whenever an emission point or a chemical manufacturing process 
unit is added to a source, written information specified under 
paragraphs (e)(1) through (e)(5) of this section, containing 
information on the new emission point(s) shall be submitted to the EPA 
regional office where the source is located.
    14. Section 63.152 is amended by revising paragraphs (c)(2)(ii)(C) 
and (d)(1) to read as follows:


Sec. 63.152  General reporting and continuous records.

* * * * *
    (c) * * *
    (2) * * *
    (ii) * * *
    (C) A monitored parameter that is outside its established range or 
monitoring data that are not collected are excursions. However, if the 
conditions in paragraph (c)(2)(ii)(C)(1) or (c)(2)(ii)(C)(2) of this 
section are met, these excursions are not violations and do not count 
toward the number of excused excursions for determining compliance.
    (1) Periods of start-up, shutdown, or malfunction. During periods 
of start-up, shutdown, or malfunction when the source is operated 
during such periods in accordance with the source's start-up, shutdown, 
and malfunction plan as required by Sec. 63.6(e)(3) of subpart A.
    (2) Periods of nonoperation. During periods of nonoperation of the 
chemical manufacturing process unit, or portion thereof, that results 
in cessation of the emissions to which the monitoring applies.
* * * * *
    (d) * * *
    (1) Reports of start-up, shutdown, and malfunction required by 
Sec. 63.10(d)(5) of subpart A. The start-up, shutdown and malfunction 
reports may be submitted on the same schedule as the Periodic Reports 
required under paragraph (c) of this section instead of the schedule 
specified in Sec. 63.10(d)(5) of subpart A.
* * * * *
    15. The appendix to subpart G is amended by revising tables 4 and 7 
to read as follows:

Appendix to Subpart G--Tables and Figures

* * * * *

 Table 4. Process Vents--Monitoring, Recordkeeping, and Reporting Requirements For Maintaining a TRE Index Value
                                                  >1.0 and 4.0
----------------------------------------------------------------------------------------------------------------
                                                                   Recordkeeping and reporting requirements for
       Final recovery device          Parameters to be monitored               monitored parameters
--------------------------------------------------a-------------------------------------------------------------
Absorber b.........................  Exit temperature of the      1. Continuous records c.
                                      absorbing liquid            2. Record and report the exit temperature of
                                      [63.114(b)(1)], and.         the absorbing liquid averaged over the full
                                                                   period of the TRE determination--NCS d.
                                                                  3. Record the daily average exit temperature
                                                                   of the absorbing liquid for each operating
                                                                   day e.
                                                                  4. Report all the daily average exit
                                                                   temperatures of the absorbing liquid that are
                                                                   outside the range established in the NCS or
                                                                   operating permit--PR f.
                                     Exit specific gravity        1. Continuous records.
                                      [63.114(b)(1)].             2. Record and report the exit specific gravity
                                                                   averaged over the full period of the TRE
                                                                   determination--NCS.
                                                                  3. Record the daily average exit specific
                                                                   gravity for each operating day e.
                                                                  4. Report all daily average exit specific
                                                                   gravity values that are outside the range
                                                                   established in the NCS or operating permit--
                                                                   PR.
Condenser d........................  Exit (product side)          1. Continuous records.
                                      temperature [63.114(b)(2)]. 2. Record and report the exit temperature
                                                                   averaged over the full period of the TRE
                                                                   determination--NCS.
                                                                  3. Record the daily average exit temperature
                                                                   for each operating day e.
                                                                  4. Report all daily average exit temperatures
                                                                   that are outside the range established in the
                                                                   NCS or operating permit--PR.
Carbon adsorber d..................  Total regeneration stream    1. Record of total regeneration stream mass or
                                      mass or volumetric flow      volumetric flow for each carbon bed
                                      during carbon bed            regeneration cycle.
                                      regeneration cycle(s)       2. Record and report the total regeneration
                                      [63.114(b)(3)], and.         stream mass or volumetric flow during each
                                                                   carbon bed regeneration cycle during the
                                                                   period of the TRE determination--NCS.
                                                                  3. Report all carbon bed regeneration cycles
                                                                   when the total regeneration stream mass or
                                                                   volumetric flow is outside the range
                                                                   established in the NCS or operating permit--
                                                                   PR.
                                     Temperature of the carbon    1. Records of the temperature of the carbon
                                      bed after regeneration       bed after each regeneration.
                                      [and within 15 minutes of   2. Record and report the temperature of the
                                      completing any cooling       carbon bed after each regeneration during the
                                      cycle(s)] [63.114(b)(3)].    period of the TRE determination--NCS.

[[Page 20196]]

 
                                                                  3. Report all carbon bed regeneration cycles
                                                                   during which temperature of the carbon bed
                                                                   after regeneration is outside the range
                                                                   established in the NCS or operating permit--
                                                                   PR.
All recovery devices (as an          Concentration level or       1. Continuous records.
 alternative to the above).           reading indicated by an     2. Record and report the concentration level
                                      organic monitoring device    or reading averaged over the full period of
                                      at the outlet of the         the TRE determination--NCS.
                                      recovery device [63.114
                                      (b)].
                                                                  3. Record the daily average concentration
                                                                   level or reading for each operating day e.
                                                                  4. Report all daily average concentration
                                                                   levels or readings that are outside the range
                                                                   established in the NCS or operating permit--
                                                                   PR.
----------------------------------------------------------------------------------------------------------------
aRegulatory citations are listed in brackets.
b Alternatively, these devices may comply with the organic monitoring device provisions listed at the end of
  this table under ``All Recovery Devices.''
c ``Continuous records'' is defined in Sec.  63.111 of this subpart.
d NCS = Notification of Compliance Status described in Sec.  63.152 of this subpart.
e The daily average is the average of all values recorded during the operating day. If all recorded values
  during an operating day are within the range established in the NCS or operating permit, a statement to this
  effect can be recorded instead of the daily average.
f PR= Periodic Reports described in Sec.  63.152 of this subpart.

* * * * *

   Table 7.--Transfer Operations--Monitoring, Recordkeeping, and Reporting Requirements for Complying With 98
 Weight-Percent Reduction of Total Organic Hazardous Air Pollutants Emissions or a Limit of 20 Parts Per Million
                                                    by Volume
----------------------------------------------------------------------------------------------------------------
                                                                   Recordkeeping and reporting requirements for
           Control device            Parameters to be monitoreda               monitored parameters
----------------------------------------------------------------------------------------------------------------
Thermal incinerator................  Firebox temperature b        1. Continuous records c during loading.
                                      [63.127(a)(1)(i)].          2. Record and report the firebox temperature
                                                                   averaged over the full period of the
                                                                   performance test--NCS.d
                                                                  3. Record the daily average firebox
                                                                   temperature for each operating day e
                                                                  4. Report daily average temperatures that are
                                                                   outside the range established in the NCS or
                                                                   operating permit and all operating days when
                                                                   insufficient monitoring data are collected f--
                                                                   PRg
Catalytic incinerator..............  Temperature upstream and     1. Continuous records during loading.
                                      downstream of the catalyst  2. Record and report the upstream and
                                      bed [63.127(a)(1)(ii)].      downstream temperatures and the temperature
                                                                   difference across the catalyst bed averaged
                                                                   over the full period of the performance test--
                                                                   NCS.
                                                                  3. Record the daily average upstream
                                                                   temperature and temperature difference across
                                                                   catalyst bed for each operating day.e
                                                                  4. Report all daily average upstream
                                                                   temperatures that are outside the range
                                                                   established in the NCS or operating permit--
                                                                   PR.
                                                                  5. Report all daily average temperature
                                                                   differences across the catalyst bed that are
                                                                   outside the range established in the NCS or
                                                                   operating permit--PR.
                                                                  6. Report all operating days when insufficient
                                                                   monitoring data are collected.f
Boiler or process heater with a      Firebox temperature b        1. Continuous records during loading.
 design heat input capacity less      [63.127(a)(3)].             2. Record and report the firebox temperature
 than 44 megawatts and vent stream                                 averaged over the full period of the
 is not introduced with or as the                                  performance test--NCS.
 primary fuel.
                                                                  3. Record the daily average firebox
                                                                   temperature for each operating day.e
                                                                  4. Report all daily average firebox
                                                                   temperatures that are outside the range
                                                                   established in the NCS or operating permit
                                                                   and all operating days when insufficient data
                                                                   are collectedf--PR.
Flare..............................  Presence of a flame at the   1. Hourly records of whether the monitor was
                                      pilot light [63.127(a)(2)].  continuously operating and whether the pilot
                                                                   flame was continuously present during each
                                                                   hour.
                                                                  2. Record and report the presence of a flame
                                                                   at the pilot light over the full period of
                                                                   the compliance determination--NCS.
                                                                  3. Record the times and durations of all
                                                                   periods when all pilot flames are absent or
                                                                   the monitor is not operating.
                                                                  4. Report the duration of all periods when all
                                                                   pilot flames of a flare are absent--PR.

[[Page 20197]]

 
Scrubber for halogenated vent        pH of scrubber effluent      1. Continuous records during loading.
 streams (Note: Controlled by a       [63.127(a)(4)(i)], and.     2. Record and report the pH of the scrubber
 combustion device other than a                                    effluent averaged over the full period of the
 flare).                                                           performance test--NCS.
                                                                  3. Record the daily average pH of the scrubber
                                                                   effluent for each operating day.e
                                                                  4. Report all daily average pH values of the
                                                                   scrubber effluent that are outside the range
                                                                   established in the NCS or operating permit
                                                                   and all operating days when insufficient
                                                                   monitoring data are collected f--PR.
                                     Scrubber liquid and gas      1. Continuous records during loading of
                                      flow rates                   scrubber liquid flow rate.
                                      [63.127(a)(4)(ii)].         2. Record and report the scrubber liquid/gas
                                                                   ratio averaged over the full period of the
                                                                   performance test--NCS.
                                                                  3. Record the daily average scrubber liquid/
                                                                   gas ratio for each operating day.e
                                                                  4. Report all daily average scrubber liquid/
                                                                   gas ratios that are outside the range
                                                                   established in the NCS or operating permit
                                                                   and all operating days when insufficient
                                                                   monitoring data are collected f--PR.
Absorber h.........................  Exit temperature of the      1. Continuous records during loading.
                                      absorbing liquid            2. Record and report the exit temperature of
                                      [63.127(b)(1)], and.         the absorbing liquid averaged over the full
                                                                   period of the performance test--NCS.
                                                                  3. Record the daily average exit temperature
                                                                   of the absorbing liquid for each operating
                                                                   day.e
                                                                  4. Report all daily average exit temperatures
                                                                   of the absorbing liquid that are outside the
                                                                   range established in the NCS or operating
                                                                   permit and all operating days when
                                                                   insufficient monitoring data are collected f--
                                                                   PR.
                                     Exit specific gravity        1. Continuous records during loading.
                                      [63.127(b)(1)].             2. Record and report the exit specific gravity
                                                                   averaged over the full period of the
                                                                   performance test--NCS.
                                                                  3. Record the daily average exit specific
                                                                   gravity for each operating day.e
                                                                  4. Report all daily average exit specific
                                                                   gravity values that are outside the range
                                                                   established in the NCS or operating permit
                                                                   and all operating days when insufficient
                                                                   monitoring data are collected f--PR.
Condenser h........................  Exit (product side)          1. Continuous records during loading.
                                      temperature [63.127(b)(2)]. 2. Record and report the exit temperature
                                                                   averaged over the full period of the
                                                                   performance test--NCS.
                                                                  3. Record the daily average exit temperature
                                                                   for each operating day.e
                                                                  4. Report all daily average exit temperatures
                                                                   that are outside the range established in the
                                                                   NCS or operating permit and all operating
                                                                   days when insufficient monitoring data are
                                                                   collected f--PR.
Carbon adsorberh...................  Total regeneration stream    1. Record of total regeneration stream mass or
                                      mass or volumetric or        volumetric flow for each carbon bed
                                      volumetric flow during       regeneration cycle.
                                      carbon bed regeneration     2. Record and report the total regeneration
                                      cycle(s) [63.127(b)(3)],     stream mass or volumetric flow during each
                                      and.                         carbon bed regeneration cycle during the
                                                                   period of the performance test--NCS.
                                                                  3. Report all carbon bed regeneration cycles
                                                                   when the total regeneration stream mass or
                                                                   volumetric flow is outside the range
                                                                   established in the NCS or operating permit
                                                                   and all operating days when insufficient
                                                                   monitoring data are collectedf--PR.
                                     Temperature of the carbon    1. Records of the temperature of the carbon
                                      bed after regeneration       bed after each regeneration.
                                      [and within 15 minutes of   2. Record and report the temperature of the
                                      completing any cooling       carbon bed after each regeneration during the
                                      cycle(s)] [63.127(b)(3)].    period of the performance test--NCS.
                                                                  3. Report all the carbon bed regeneration
                                                                   cycles during which the temperature of the
                                                                   carbon bed after regeneration is outside the
                                                                   range established in the NCS or operating
                                                                   permit and all operating days when
                                                                   insufficient monitoring data are collectedf--
                                                                   PR.
All recovery devices (as an          Concentration level or       1. Continuous records during loading.
 alternative to the above).           reading indicated by an     2. Record and report the concentration level
                                      organic monitoring device    or reading averaged over the full period of
                                      at the outlet of the         the performance test--NCS.
                                      recovery device
                                      [63.127(b)].
                                                                  3. Record the daily average concentration
                                                                   level or reading for each operating day.d

[[Page 20198]]

 
                                                                  4. Report all daily average concentration
                                                                   levels or readings that are outside the range
                                                                   established in the NCS or operating permit
                                                                   and all operating days when insufficient
                                                                   monitoring data are collected f--PR.
All control devices and vapor        Presence of flow diverted    1. Hourly records of whether the flow
 balancing systems.                   to the atmosphere from the   indicator was operating and whether a
                                      control device               diversion was detected at any time during
                                      [63.127(d)(1)] or.           each hour.
                                                                  2. Record and report the duration of all
                                                                   periods when the vent stream is diverted
                                                                   through a bypass line or the monitor is not
                                                                   operating--PR.
                                     Monthly inspections of       1. Records that monthly inspections were
                                      sealed valves                performed.
                                      [63.127(d)(2)].             2. Record and report all monthly inspections
                                                                   that show the valves are moved to the
                                                                   diverting position or the seal has been
                                                                   changed.
----------------------------------------------------------------------------------------------------------------
a Regulatory citations are listed in brackets.
b Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any
  substantial heat exchange is encountered.
c ``Continuous records'' is defined in Sec.  63.111 of this subpart.
d NCS = Notification of Compliance Status described in Sec.  63.152 of this subpart.
e The daily average is the average of all recorded parameter values for the operating day. If all recorded
  values during an operating day are within the range established in the NCS or operating permit, a statement to
  this effect can be recorded instead of the daily average.
f The periodic reports shall include the duration of periods when monitoring data are not collected for each
  excursion as defined in Sec.  63.152(c)(2)(ii)(A) of this subpart.
g PR = Periodic Reports described in Sec.  63.152 of this subpart.
h Alternatively, these devices may comply with the organic monitoring device provisions listed at the end of
  this table under ``All Recovery Devices.''

    16. Section 63.160 is amended by revising paragraph (a) to read as 
follows:


Sec. 63.160  Applicability and designation of source.

    (a) The provisions of this subpart apply to pumps, compressors, 
agitators, pressure relief devices, sampling connection systems, open-
ended valves or lines, valves, connectors, surge control vessels, 
bottoms receivers, instrumentation systems, and control devices or 
closed vent systems required by this subpart that are intended to 
operate in organic hazardous air pollutant service 300 hours or more 
during the calendar year within a source subject to the provisions of a 
specific subpart in 40 CFR part 63 that references this subpart.
* * * * *


Sec. 63.163  [Amended]

    17. Paragraph (b)(1) of Sec. 63.163 is amended by revising the 
reference to ``(e) through (i) of this section'' to read ``(e) through 
(j) of this section.''


Sec. 63.164  [Amended]

    18. Paragraph (h) of Sec. 63.164 is amended by revising the 
reference to ``(a) through (f) of this section'' to read ``(a) through 
(g) of this section.''


Sec. 63.173  [Amended]

    19. In Sec. 63.173, paragraph (j) introductory text is amended by 
revising the reference to `` (b) through (d) of this section'' to read 
`` (a) through (d) of this section.''
    20. Section 63.181 is amended by revising paragraph (b)(7) 
introductory text and revising paragraph (g)(3) introductory text to 
read as follows:


Sec. 63.181  Recordkeeping requirements.

* * * * *
    (b) * * *
    (7) The following information pertaining to all pumps subject to 
the provisions of Sec. 63.163(j), valves subject to the provisions of 
Sec. 63.168(h) and (i) of this subpart, agitators subject to the 
provisions of Sec. 63.173(h) through (j), and connectors subject to the 
provisions of Sec. 63.174(f) and (g) of this subpart shall be recorded:
* * * * *
    (g) * * *
    (3) Records of inspections of closed-vent systems subject to the 
provisions of Sec. 63.172 of this subpart, as specified in paragraphs 
(g)(3)(i) and (g)(3)(ii) of this section.
* * * * *
[FR Doc. 99-10099 Filed 4-23-99; 8:45 am]
BILLING CODE 6560-50-P