[Federal Register Volume 66, Number 5 (Monday, January 8, 2001)]
[Rules and Regulations]
[Pages 1263-1268]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 01-365]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[AD-FRL-6928-2]
RIN 2060-AH96


National Emission Standards for Hazardous Air Pollutants from 
Off-Site Waste and Recovery Operations

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; technical corrections and amendments.

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

SUMMARY: Under the Clean Air Act (CAA), the EPA promulgated the 
National Emission Standards for Hazardous Air Pollutants (NESHAP) from 
Off-Site Waste and Recovery Operations (OSWRO) on July 1, 1996 with 
subsequent amendments on July 20, 1999. The promulgated rule requires 
new and existing major sources to control emissions of hazardous air 
pollutants (HAP) to the level reflecting application of the maximum 
achievable control technology. The technical corrections and minor 
technical amendments in this action will not change the basic control 
requirements of the rule or the level of health protection it provides.
    Section 553 of the Administrative Procedure Act, 5 U.S.C. 
553(b)(B), provides that, when an agency for good cause finds that 
notice and public procedure are impracticable, unnecessary, or contrary 
to the public interest, the agency may issue a rule without providing 
notice and an opportunity for public comment. We have determined that 
there is good cause for making today's rule final without prior 
proposal and opportunity for comment because the changes to the rule 
are minor technical corrections, are noncontroversial in nature, and do 
not substantively change the requirements of the OSWRO rule. Thus, 
notice and public procedure are unnecessary. We find that this 
constitutes good cause under 5 U.S.C. 553(b)(B).
    Section 553(d)(3) allows an agency, upon finding good cause, to 
make a rule effective immediately. Because today's changes do not 
substantively change the requirements of the OSWRO rule, we find good 
cause to make these amendments effectively immediately.

EFFECTIVE DATE: January 8, 2001.

ADDRESSES: Docket No. A-92-16 contains the supporting information for 
the original OSWRO NESHAP and this action. The docket is located at the 
U.S. EPA in room M-1500, Waterside Mall (ground floor), 401 M Street 
SW, Washington, DC 20460, and may be inspected from 8:00 a.m. to 5:30 
p.m., Monday through Friday, excluding legal holidays. A reasonable fee 
may be charged for copying.

FOR FURTHER INFORMATION CONTACT: Ms. Elaine Manning, Waste and Chemical 
Processes Group, Emission Standards Division (MD-13), U.S. EPA, 
Research Triangle Park, NC, 27711, telephone number (919) 541-5499, 
facsimile number (919) 541-0246, electronic mail address 
<a href="/cdn-cgi/l/email-protection#b5d8d4dbdbdcdbd29bd0d9d4dcdbd0f5d0c5d49bd2dac3"><span class="__cf_email__" data-cfemail="3f525e5151565158115a535e56515a7f5a4f5e11585049">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION: Regulated Entities. Entities potentially 
regulated by this action include the following types of facilities if 
the facility receives ``off-site material'' as defined in the rule, and 
the facility is determined to be a major source of emissions of HAP as 
defined in 40 CFR 63.2.

[[Page 1264]]



------------------------------------------------------------------------
             Category                  Examples of regulated entities
------------------------------------------------------------------------
Industry..........................  Businesses that receive waste, used
                                     oil, or used solvent from off-site
                                     locations and manage this material
                                     in any of the following waste
                                     management or recovery operations:
                                     hazardous waste treatment, storage,
                                     and disposal facilities (TSDF);
                                     hazardous wastewater treatment
                                     operations exempted from air
                                     emission control requirements in 40
                                     CFR parts 264 or 265; nonhazardous
                                     wastewater treatment facilities
                                     other than publicly owned treatment
                                     works; used solvent recovery
                                     operations; recovery operations
                                     that recycle or reprocess hazardous
                                     waste and are exempted from
                                     regulation as a TSDF in 40 CFR
                                     parts 264 or 265; and used oil re-
                                     refineries.
Federal Government................  Federal agency facilities that
                                     operate any of the waste management
                                     or recovery operations that meet
                                     the description of the entities
                                     listed under the ``Industry''
                                     category in this table.
------------------------------------------------------------------------

    This table is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be regulated by this 
action. This table lists the types of entities that the EPA is now 
aware could potentially be regulated by this action.
    A comprehensive list of Standard Industrial Classification (SIC) 
codes cannot be compiled for businesses potentially regulated by this 
action due to the structure of the rule. The rule may be applicable to 
any business that receives waste, used oil, or used solvent from an 
off-site location and then manages this material in one of the 
operations or processes specified in the rule. Thus, for many 
businesses subject to the rule, the regulated sources (i.e., off-site 
waste management or recovery operations) are only a small part of the 
overall manufacturing process or service conducted at the facility. In 
these cases, the SIC code indicates the primary product produced or 
service provided at the facility rather than the presence of an off-
site waste management or recovery operation at the site which is 
operated to support the predominate function of the facility. For 
example, SIC code classifications likely to have off-site waste 
management or recovery operations at some (but not all) facilities 
include, but are not limited to, petroleum refineries (SIC code 2911), 
industrial organic chemical manufacturing (SIC code 286x), plastic 
materials and synthetics manufacturing (SIC code 282x), and 
miscellaneous chemical products manufacturing (SIC code 289x). The EPA 
is also aware of off-site waste management or recovery operations 
potentially subject to the rule being located at a few facilities 
listed under SIC codes for refuse systems, waste management, business 
services, miscellaneous services, and nonclassifiable. Thus, the SIC 
code alone for a given facility does not determine whether the facility 
is or is not potentially subject to this rule.
    To determine whether your facility is regulated by this action, you 
should carefully examine the applicability criteria in Sec. 63.680 of 
the rule. 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 of this document. 
World Wide Web (WWW). The text of today's document will also be 
available on the WWW through the Technology Transfer Network (TTN). 
Following signature, a copy of this action will be posted on the TTN's 
policy and guidance page for newly proposed or promulgated rules http//
www.epa.gov/ttn/oarpg. The TTN provides information and technology 
exchange in various areas of air pollution control. If more information 
regarding the TTN is needed, call the TTN HELP line at (919) 541-5384.

I. Background

    The EPA, under 40 CFR part 63, subpart DD, promulgated the OSWRO 
NESHAP on July 1, 1996 (61 FR 34140). The OSWRO NESHAP establish 
standards to control HAP emissions from certain waste management and 
recovery operations that are not subject to Federal air standards under 
other subparts in 40 CFR part 61 or 63. Subpart DD specifies the rule's 
applicability, standards for affected sources, compliance requirements, 
and reporting and recordkeeping provisions. In addition, subpart DD 
cross-references other subparts in 40 CFR part 63 for the specific air 
emissions control requirements to be used for affected tanks, surface 
impoundments, containers, individual drain systems, and oil-water and 
organic-water separators. The cross-referenced subparts are Subpart OO, 
National Emission Standards for Tanks, Level 1; Subpart PP, National 
Emission Standards for Containers; Subpart QQ, National Emission 
Standards for Surface Impoundments; Subpart RR, National Emission 
Standards for Individual Drain Systems; and Subpart VV, National 
Emission Standards for Oil-Water Separators and Organic-Water 
Separators. Amendments were made to the final rule on July 20, 1999.

II. Summary of Corrections

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

Table 2

------------------------------------------------------------------------
             Citation                              Change
------------------------------------------------------------------------
Sec.  63.681......................  Add definition ``Off-site material
                                     service'' to amendatory paragraph.
Sec.  63.684(b)(1)(ii)(A)&(B).....  Add the letters ``A'' and ``B''
                                     which were inadvertently left out
                                     of July 20, 1999 amendments.
Sec.  63.685(i) and (i)(4)........  Add reference to (i)(4) in (i),
                                     intro paragraph, and add (i)(4),
                                     which was left out of July 1, 1996
                                     final rule and the July 20, 1999
                                     amendments.
Sec.  63.691(a)...................  In the July 20, 1999 amendments,
                                     Sec.  63.683(b)(3) was eliminated
                                     and Sec.  63.683(d) was added to
                                     take its place. The cite in Sec.
                                     63.691(a) referencing Sec.  63.683
                                     was not corrected in the July 1999
                                     amendments to cite Sec.  63.683(d).
                                     Today's action corrects this
                                     oversight.
Sec.  63.693(d)(3)(ii),             The change to the rule removes the
 (e)(3)(ii), (f)(3)(iii), and        <plus-minus>1 percent accuracy
 (g)(3)(ii).                         requirement and replaces it with
                                     reference to part 60, appendix B,
                                     Performance Specification 8 or 9.
                                     The EPA received comments that the
                                     monitoring requirements in the rule
                                     were too vague, in that they did
                                     not define what type of monitoring
                                     device was acceptable, nor did it
                                     establish procedures for
                                     determining the accuracy
                                     requirement (<plus-minus>1 percent)
                                     cited in the rule. The addition of
                                     part 60, appendix B, Performance
                                     Specification 8 or 9 to the rule
                                     will aid sources in choosing and
                                     certifying appropriate monitors, as
                                     well as establishing quality
                                     assurance procedures for
                                     maintaining, calibrating and
                                     auditing the monitors.

[[Page 1265]]

 
Sec.  63.693 (d)(3), (d)(4)(i) and  This change adds another option to
 (iii).                              the carbon canister monitoring and
                                     replacement requirements consistent
                                     with those allowed under other
                                     related NESHAP and Resource
                                     Conservation and Recovery Act
                                     (RCRA) air rules.
Sec.  63.694(b)(2)(iii)...........  Correction to subscript of the
                                     ``Q<INF>T</INF>'' term.
Sec.  63.694(1)(3)(ii)(A).........  Correction to misprinted equation in
                                     July 1, 1996 final rule.
Table 2. Applicability of           Sec.  63.10(b)(2)(xi) inadvertently
 Paragraphs in Subpart A of Part     left off table. The ``yes'' for
 63--General Provisions to Subpart   this section was added.
 DD.
Sec.  63.924(c)(2)................  Change reference of Sec.  63.692 to
                                     Sec.  63.693. Section 63.692 is
                                     reserved.
Sec.  63.962(b)(3)(ii)............  Corrected typographical error ``in
                                     accordance.''
Sec.  63.965(b)...................  Corrected typographical error
                                     ``Standards.''
Sec.  63.966......................  Corrected typographical error
                                     ``Standards.''
Sec.  63.1045.....................  Corrected typographical error
                                     ``Standards.''
------------------------------------------------------------------------

III. Administrative Requirements

    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 (OMB). Because 
the EPA has made a ``good cause'' finding that this action is not 
subject to notice and comment requirements under the Administrative 
Procedure Act or any other statute, it is not subject to the regulatory 
flexibility provisions of the Regulatory Flexibility Act (5 U.S.C. 601 
et seq.), or to sections 202 and 205 of the Unfunded Mandates Reform 
Act of 1995 (UMRA) (Public Law 104-4). In addition, this action does 
not significantly or uniquely affect small governments or impose a 
significant intergovernmental mandate, as described in sections 203 and 
204 of the UMRA. This action also does not significantly or uniquely 
affect the communities of tribal governments, as specified by Executive 
Order 13084 (63 FR 27655, May 10, 1998). This action does not have 
substantial direct effects on the States, on the relationship between 
the national government and the States, as specified in Executive Order 
13132 (64 FR 43255, August 10, 1999). This action also is not subject 
to Executive Order 13045 (62 FR 19885, April 23, 1997) because it is 
not economically significant.
    Section 12(d) of the National Technology Transfer and Advancement 
Act (NTTAA) of 1995 (Public Law No. 104-113), directs EPA to use 
voluntary consensus standards in their regulatory and procurement 
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) developed or adopted by one or more 
voluntary consensus bodies. The NTTAA directs EPA to provide Congress, 
through annual reports to OMB, with explanations when an agency does 
not use available and applicable voluntary consensus standards.
    These final rule amendments provide technical corrections and minor 
technical amendments to the Off-Site Waste and Recovery Operations 
NESHAP (Subpart DD). These amendments include two technical standards: 
Performance Specification 8 (PS-8), Performance Specification for 
Volatile Organic Compound Continuous Emission Monitoring Systems in 
Stationary Sources; and Performance Specification 9 (PS-9), Performance 
Specification for Gas Chromatograph Continuous Emission Monitoring 
Systems in Stationary Sources which are cited in Sec. 63.693.
    Consistent with the NTTAA, the EPA conducted a search for EPA's 
Performance Specifications 8 and 9. No candidate consensus standards 
were identified for either performance specification applicable for 
these amendments. Therefore, EPA is not proposing/adopting any 
voluntary consensus standards in this rulemaking. Nevertheless, under 
Sec. 63.8, sources are allowed to apply to EPA for permission to use 
alternative monitoring in lieu of PS-8 and PS-9.
    This technical correction action does not involve special 
consideration of environmental justice related issues as required by 
Executive Order 12898 (59 FR 7629, February 16, 1994). In issuing these 
rule amendments, the EPA has taken the necessary steps to eliminate 
drafting errors and ambiguity, minimize potential litigation, and 
provide a clear legal standard for affected conduct, as required by 
section 3 of Executive Order 12988 (61 FR 4729, February 7, 1996). The 
EPA has complied with Executive Order 12630 (53 FR 8859, March 15, 
1988) by examining the takings implications of these rule amendments in 
accordance with the ``Attorney General's Supplemental Guidelines for 
the Evaluation of Risk and Avoidance of Unanticipated Takings'' issued 
under the executive order. These rule amendments do not impose an 
information collection burden under the provisions of the Paperwork 
Reduction Act of 1995 (44 U.S.C. 3501 et seq.). The EPA's compliance 
with these statutes and Executive Orders for the underlying rule is 
discussed in the July 20, 1999 amendments to the final OSWRO rule.
    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 rule effective sooner than otherwise provided by the 
Congressional Review Act if the agency makes 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, the EPA has made 
such a good cause finding, including the reasons therefor, and 
established an effective date of January 8, 2001. The 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).

List of Subjects in 40 CFR Part 63

    Environmental protection, Air pollution control, Off-site waste and 
recovery operations.

    Dated: December 27, 2000.
Carol M. Browner,
Administrator.

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

[[Page 1266]]

PART 63--[AMENDED]

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

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

Subpart DD--National Emission Standards for Hazardous Air 
Pollutants from Off-Site Waste and Recovery Operations

    2. Section 63.684 is amended by revising paragraph (b)(1)(ii) to 
read as follows:


Sec. 63.684  Standards: Off-site material treatment.

* * * * *
    (b) * * *
    (1) * * *
    (ii) In the case when off-site material streams entering the 
treatment process are a mixture of off-site material streams having an 
average VOHAP concentration equal to or greater than 500 ppmw at the 
point-of-delivery with off-site material streams having average VOHAP 
concentrations less than 500 ppmw at the point-of-delivery, then the 
VOHAP concentration of the off-site material must be reduced to a level 
at the point-of-treatment that meets the performance level specified in 
either paragraph (b)(1)(ii)(A) or (B) of this section.
    (A) Less than the VOHAP concentration limit (C<INF>R</INF>) 
established for the treatment process using the procedure specified in 
Sec. 63.694(d); or
    (B) Less than the lowest VOHAP concentration determined for each of 
the off-site material streams entering the treatment process as 
determined by the VOHAP concentration of the off-site material at the 
point-of-delivery.
* * * * *

    3. Section 63.685 is amended by revising paragraph (i) introductory 
text and adding paragraph (i)(4) to read as follows:


Sec. 63.685  Standards: Tanks.

* * * * *
    (i) The owner or operator who elects to control air emissions by 
using an enclosure vented through a closed-vent system to an enclosed 
combustion control device shall meet the requirements specified in 
paragraphs (i)(1) through (4) of this section.
* * * * *
    (4) The owner or operator shall inspect and monitor the closed-vent 
system and control device as specified in Sec. 63.693.

    4. Section 63.691 is amended by revising paragraph (a) to read as 
follows:


Sec. 63.691  Standards: Equipment leaks.

    (a) The provisions of this section apply to the control of air 
emissions from equipment leaks for which Sec. 63.683(d) references the 
use of this section for such air emissions control.
* * * * *

    5. Section 63.693 is amended by:
    a. Revising paragraphs (d)(3) introductory text and (d)(3)(ii);
    b. Revising paragraph (d)(4)(i);
    c. Adding paragraph (d)(4)(iii)
    d. Revising paragraph (e)(3)(ii);
    e. Revising paragraph (f)(3)(iii); and
    f. Revising paragraph (g)(3)(ii).
    The revisions and addition read as follows:


Sec. 63.693  Standards: Closed-vent systems and control devices.

* * * * *
    (d) * * *
    (3) The owner or operator must monitor the operation of the carbon 
adsorption system in accordance with the requirements of Sec. 63.695(e) 
using one of the continuous monitoring systems specified in paragraphs 
(d)(3)(i) through (iii) of this section. Monitoring the operation of a 
nonregenerable carbon adsorption system (e.g., a carbon canister) using 
a continuous monitoring system is not required when the carbon canister 
or the carbon in the control device is replaced on a regular basis 
according to the requirements in paragraph (d)(4)(iii) of this section.
* * * * *
    (ii) A continuous monitoring system to measure and record the daily 
average concentration level of organic compounds in the exhaust gas 
stream from the control device. The organic monitoring system must 
comply either with Performance Specification 8 or 9 in 40 CFR part 60, 
appendix B. The relative accuracy provision of Performance 
Specification 8, Sections 2.4 and 3 need not be conducted.
* * * * *
    (4) * * *
    (i) Following the initial startup of the control device, all carbon 
in the control device shall be replaced with fresh carbon on a regular, 
predetermined time interval that is no longer than the carbon service 
life established for the carbon adsorption system. The provisions of 
this paragraph (d)(4)(i) do not apply to a nonregenerable carbon 
adsorption system (e.g., a carbon canister) for which the carbon 
canister or the carbon in the control device is replaced on a regular 
basis according to the requirements in paragraph (d)(4)(iii) of this 
section.
* * * * *
    (iii) As an alternative to meeting the requirements in paragraphs 
(d)(3) and (d)(4)(i) of this section, an owner or operator of a 
nonregenerable carbon adsorption system may choose to replace on a 
regular basis the carbon canister or the carbon in the control device 
using the procedures in either paragraph (d)(4)(iii)(A) or 
(d)(4)(iii)(B) of this section. For the purpose of complying with this 
paragraph (d)(4)(iii), a nonregenerable carbon adsorption system means 
a carbon adsorption system that does not regenerate the carbon bed 
directly onsite in the control device, such as a carbon canister. The 
spent carbon removed from the nonregenerable carbon adsorption system 
must be managed according to the requirements in paragraph (d)(4)(ii) 
of this section.
    (A) Monitor the concentration level of the organic compounds in the 
exhaust vent from the carbon adsorption system on a regular schedule, 
and when carbon breakthrough is indicated, immediately replace either 
the existing carbon canister with a new carbon canister or replace the 
existing carbon in the control device with fresh carbon. Measurement of 
the concentration level of the organic compounds in the exhaust vent 
stream must be made with a detection instrument that is appropriate for 
the composition of organic constituents in the vent stream and is 
routinely calibrated to measure the organic concentration level 
expected to occur at breakthrough. The monitoring frequency must be 
daily or at an interval no greater than 20 percent of the time required 
to consume the total carbon working capacity established as a 
requirement of paragraph (d)(2)(ii)(B) of this section, whichever is 
longer.
    (B) Replace either the existing carbon canister with a new carbon 
canister or replace the existing carbon in the control device with 
fresh carbon at a regular, predetermined time interval that is less 
than the design carbon replacement interval established as a 
requirement of paragraph (d)(2)(ii)(B) of this section.
    (e) * * *
    (3) * * *
    (ii) A continuous monitoring system to measure and record the daily 
average concentration level of organic compounds in the exhaust gas 
stream from the control device. The organic monitoring system must 
comply either with Performance Specification 8 or 9 in 40 CFR part 60, 
appendix B. The relative accuracy provision of Performance 
Specification 8, Sections 2.4 and 3 need not be conducted.
* * * * *
    (f) * * *

[[Page 1267]]

    (3) * * *
    (iii) For either type of vapor incinerator, a continuous monitoring 
system to measure and record the daily average concentration of organic 
compounds in the exhaust vent stream from the control device. The 
organic monitoring system must comply either with Performance 
Specification 8 or 9 in 40 CFR part 60, appendix B. The relative 
accuracy provision of Performance Specification 8, Sections 2.4 and 3 
need not be conducted.
* * * * *
    (g) * * *
    (3) * * *
    (ii) A continuous monitoring system to measure and record the daily 
average concentration of organic compounds in the exhaust vent stream 
from the control device. The organic monitoring system must comply 
either with Performance Specification 8 or 9 in 40 CFR part 60, 
appendix B. The relative accuracy provision of Performance 
Specification 8, Sections 2.4 and 3 need not be conducted.
* * * * *
    6. Section 63.694 is amended by revising paragraphs (b)(2)(iii) and 
(l)(3)(ii)(A) to read as follows:


Sec. 63.694  Testing methods and procedures.

* * * * *
    (b) * * *
    (2) * * *
    (iii) Calculations. The average VOHAP concentration (C) on a mass-
weighted basis shall be calculated by using the results for all samples 
analyzed in accordance with paragraph (b)(2)(ii) of this section and 
the following equation. An owner or operator using a test method that 
provides species-specific chemical concentrations may adjust the 
measured concentrations to the corresponding concentration values which 
would be obtained had the off-site material samples been analyzed using 
Method 305. To adjust these data, the measured concentration for each 
individual HAP chemical species contained in the off-site material is 
multiplied by the appropriate species-specific adjustment factor 
(f<INF>m305</INF>) listed in Table 1 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR08JA01.000

Where:

C = Average VOHAP concentration of the off-site material at the 
point-of-delivery on a mass-weighted basis, ppmw.
i = Individual sample ``i'' of the off-site material.
n = Total number of samples of the off-site material collected (at 
least 4) for the averaging period (not to exceed 1 year).
Q<INF>i</INF> = Mass quantity of off-site material stream 
represented by C<INF>i</INF>, kg/hr.
Q<INF>T</INF> = Total mass quantity of off-site material during the 
averaging period, kg/hr.
C<INF>i</INF> = Measured VOHAP concentration of sample ``i'' as 
determined in accordance with the requirements of Sec. 63.694(a), 
ppmw.
* * * * *
    (l) * * *
    (3) * * *
    (ii) * * *
    (A) The following equations shall be used:
    [GRAPHIC] [TIFF OMITTED] TR08JA01.001
    
Where:

C<INF>ij</INF>, C<INF>oj</INF> = Concentration of sample component j 
of the gas stream at the inlet and outlet of the control device, 
respectively, dry basis, parts per million by volume.
E<INF>i</INF>, E<INF>o</INF> = Mass rate of TOC (minus methane and 
ethane) or total HAP at the inlet and outlet of the control device, 
respectively, dry basis, kilogram per hour.
M<INF>ij</INF>, M<INF>oj</INF> = Molecular weight of sample 
component j of the gas stream at the inlet and outlet of the control 
device, respectively, gram/gram-mole.
Q<INF>i</INF>, Q<INF>o</INF> = Flow rate of gas stream at the inlet 
and outlet of the control device, respectively, dry standard cubic 
meter per minute.
K<INF>2</INF> = Constant, 2.494 x 10 <SUP>-</SUP>\6\ (parts per 
million) <SUP>-</SUP>\1\ (gram-mole per standard cubic meter) 
(kilogram/gram) (minute/hour), where standard temperature (gram-mole 
per standard cubic meter) is 20 deg.C.
* * * * *

    7. In Table 2 of Subpart DD, the entry ``63.10(b)(2)(x)'' is 
revised to read as follows:

 Table 2 to Subpart DD--Applicability of Paragraphs in Subpart A of this
                Part 63--General Provisions to Subpart DD
------------------------------------------------------------------------
                                    Applies to
           Subpart A                Subpart DD          Explanation
------------------------------------------------------------------------
 
*                  *                  *                  *
                  *                  *                  *
63.10(b)(2)(x)-(xi)...........  Yes..............
 
*                  *                  *                  *
                  *                  *                  *
------------------------------------------------------------------------

Subpart PP--National Emission Standards for Containers

    8. Section 63.924 is amended by revising paragraph (c)(2) to read 
as follows:


Sec. 63.924  Standards--Container Level 3 Controls.

* * * * *
    (c) * * *
    (2) The closed-vent system and control device shall be designed and 
operated in accordance with the requirements of Sec. 63.693.
* * * * *

Subpart RR--National Emission Standards for Individual Drain 
Systems

    9. Section 63.962 is amended by revising paragraph (b)(3)(ii)(A) to 
read as follows:


Sec. 63.962  Standards.

* * * * *
    (b) * * *
    (3) * * *
    (ii) * * *
    (A) The junction box shall be vented through a closed vent system 
to a control device except as provided for in paragraph (b)(3)(ii)(B) 
of this section. The closed vent system and control device shall be 
designed and operated in accordance with the standards specified in 
Sec. 63.693.
* * * * *

    10. Section 63.965 is amended by revising paragraph (b) to read as 
follows:


Sec. 63.965  Recordkeeping requirements.

* * * * *
    (b) Owners and operators that use a closed-vent system and a 
control device in accordance with the provisions of Sec. 63.962 shall 
prepare and maintain the records required for the closed-vent system 
and control device in accordance with the requirements of Sec. 63.693.

    11. Section 63.966 is revised to read as follows:

[[Page 1268]]

Sec. 63.966  Reporting requirements.

    Owners and operators that use a closed-vent system and a control 
device in accordance with the provisions of Sec. 63.962 shall prepare 
and submit to the Administrator the reports required for closed-vent 
systems and control devices in accordance with the requirements of 
Sec. 63.693.

Subpart VV--National Emission Standards for Oil-Water Separators 
and Organic-Water Separators

    12. Section 63.1045 is amended by revising paragraph (b)(3)(ii) to 
read as follows:


Sec. 63.1045  Standards--Pressurized separator.

* * * * *
    (b) * * *
    (3) * * *
    (ii) At those times when purging of inerts from the separator is 
required, and the purge stream is routed to a closed-vent system and 
control device designed and operated in accordance with the applicable 
requirements of Sec. 63.693.

[FR Doc. 01-365 Filed 1-5-01; 8:45 am]
BILLING CODE 6560-50-P


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