[Federal Register Volume 65, Number 175 (Friday, September 8, 2000)]
[Rules and Regulations]
[Pages 54419-54423]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-22974]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[AD-FRL-6866-3]


National Emission Standards for Halogenated Solvent Cleaning

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; corrections and clarifications.

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SUMMARY: This action promulgates corrections and several clarifications 
to the amendments to the ``National Emission Standards for Halogenated 
Solvent Cleaning'' promulgated on December 3, 1999 (64 FR 67793). The 
amendments finalized compliance options for continuous web cleaning. 
These corrections and clarifications ensure that all owners or 
operators of solvent cleaning machines have appropriate and 
understandable requirements for their cleaning machines.

EFFECTIVE DATE: September 8, 2000.

ADDRESSES: Interested parties may review items used to support these 
final rule amendments at: Air and Radiation Docket and Information 
Center (6102), Attention Docket Number A-92-39, Room M-1500, U.S. 
Environmental Protection Agency, 401 M Street, SW, Washington, DC 
20460.

FOR FURTHER INFORMATION CONTACT: For information concerning the 
standards, contact Mr. Paul Almodovar, Coatings and Consumer Products 
Group, Emission Standards Division (MD-13), U.S. Environmental 
Protection Agency, Research Triangle Park, North Carolina 27711, 
telephone number (919) 541-0283.
    For information regarding the applicability of this action to a 
particular entity, contact Ms. Acquanetta Delaney, Manufacturing 
Branch, Office of Compliance (2224A), U.S. Environmental Protection 
Agency, 1200 Pennsylvania Avenue, NW, Washington, DC 20460; telephone 
(202) 564-7061.

SUPPLEMENTARY INFORMATION: Docket. The docket number for this 
rulemaking is A-92-39. The docket is an organized file of information 
compiled by EPA in the development of this rulemaking. The docket is a 
dynamic file because material is added throughout the rulemaking 
development. The docketing system is intended to allow members of the 
public and industries involved to readily identify and locate documents 
so that they can effectively participate in the rulemaking process. 
Along with the proposed and promulgated standards and their preambles, 
the docket contains the record in the case of judicial review. (See 
section 307(d)(7)(A) of the Clean Air Act.)
    World Wide Web (WWW). In addition to being available in the docket, 
an electronic copy of this proposed rule is also available on the WWW 
through the Technology Transfer Network (TTN). Following signature, a 
copy of the rule will be posted on the TTN's policy and guidance page 
for newly proposed or promulgated rules at 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.
    Regulated Entities. The following entities are potentially 
regulated by this final rule.

----------------------------------------------------------------------------------------------------------------
                                                                           Examples of potentially regulated
                Category                           SIC codes                            entities
----------------------------------------------------------------------------------------------------------------
Industry................................  33, 34, 36, and 37.........  Facilities engaging in cleaning
                                                                        operations using halogenated solvent
                                                                        cleaning machines.
----------------------------------------------------------------------------------------------------------------

    This list is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be affected by this 
action. This list includes the types of entities that EPA is now aware 
could potentially be regulated by this action. Other types of entities 
not listed could also be affected. To determine whether your facility 
or company is regulated by this final rule, you should carefully 
examine the applicability criteria in Sec. 63.460 of the promulgated 
rule. If you have any questions regarding the applicability of this 
final rule to a particular entity, consult the person listed in the 
preceding FOR FURTHER INFORMATION CONTACT section.

I. What Is the Purpose of This Action?

    The purpose of this action is to provide corrections and several 
clarifications to the December 3, 1999 (64 FR 67793) final rule changes 
to the halogenated solvent cleaning national emission standards for 
hazardous air pollutants (NESHAP). The corrections fix an incorrect 
cross reference included

[[Page 54420]]

in the revised regulatory text and add regulatory language that was 
inadvertently omitted from the revised regulatory text. The 
clarifications ensure that the original intent of the revised language 
is clearly presented. These corrections and clarifications do not 
change any requirements for any sources.

II. What Corrections and Clarifications Are Included in This 
Action?

A. Corrected Cross Reference to Sec. 63.463(g)(3)(vii) and 
Clarification to Sec. 63.463(h)(2)(v)

    Section 63.463(g)(3)(vii), which outlines requirements for 
continuous web cleaning machines that use an exhaust within the 
machine, included an incorrect cross reference. The reference to the 
carbon adsorber requirements of paragraph (e)(2)(ii) is a typographical 
error and should read (e)(2)(vii). This error is being corrected in 
today's action.
    In addition, as stated in the December 3, 1999 Federal Register 
document preamble (64 FR 67795), EPA intended this section to allow for 
a carbon adsorption (CAD) system that meets either the 100 parts per 
million standard (i.e., Sec. 63.463(e)(2)(vii)) or the 70 percent 
efficient system (i.e., Sec. 63.463(g)(2)) requirement. Therefore, the 
reference to the 70 percent efficient system requirement has been added 
to Sec. 63.463(g)(3)(vii).
    Section 63.463(h)(2)(v) for remote reservoir continuous web 
cleaning machines was intended by EPA to be a parallel requirement to 
Sec. 63.463(g)(3)(vii) for other continuous web cleaning machines. The 
reference in Sec. 63.463(g)(3)(vii) to the CAD requirements was correct 
in the December 3, 1999 Federal Register amendments. However, the 
reference to the exhaust requirements could be misinterpreted. 
Therefore, EPA is making the same clarifying revisions to reference the 
70 percent efficient system requirements in Sec. 63.463(h)(2)(v) as 
discussed above.

B. Clarification That Sec. 63.463(e)(2)(vii) Applies to All Exhausts 
Within a Machine

    The language in Sec. 63.463(e)(2)(vii) is being modified to be 
parallel to the language in Sec. 63.463(g)(3)(vii) and 
Sec. 63.463(h)(2)(v). This clarifies EPA's intent that all exhausts 
within any cleaning machine are required to be vented to a properly 
operated and maintained CAD system.

C. Addition of Exemption for Steam-Heated Units

    In Section III.B of the December 3, 1999 Federal Register preamble 
(64 FR 67796), EPA stated that steam-heated units would no longer be 
required to have a device that shuts off the sump heat if the level 
drops to the sump heat coils. The EPA inadvertently omitted this change 
to Sec. 63.463(a)(4) from the promulgated changes. This omission has 
been corrected. In addition, a similar exclusion has been added to the 
parallel requirements for continuous web cleaning machines.

D. Clarification That the New Alternative Standard Applies to Entire 
Cleaning Systems

    When developing the alternative standard for continuous web 
cleaning machines in Sec. 63.463(d), EPA considered whether the option 
should apply to single or multiple continuous web cleaning machines. 
The EPA understood that some systems exist that would make compliance 
on an individual basis difficult or unnecessarily burdensome. For 
example, EPA learned of situations where more than one continuous web 
cleaning machine was routed through a single CAD system. The EPA did 
not want to preclude the use of such systems when they could comply 
with the maximum achievable control technology standard.
    The compliance method included in Sec. 63.465(g) was selected 
because it allowed for a determination of overall control efficiency of 
a system, whether that system comprised one or multiple continuous web 
cleaning machines. The ability to use Equation 8 in Sec. 63.465(h)(1) 
for an entire system is clarified in Sec. 63.464(d). In addition, the 
definitions of the variables for Equation 8 in Sec. 63.465(h)(1) have 
been corrected to read ``solvent cleaning system'' instead of ``solvent 
cleaning machine.''

E. Clarification of the Term Ri in Equation 8

    The term Ri in Equation 8 of Sec. 63.465 has been 
clarified in this action. The intent of the term, Ri, in the 
original equation was to represent the amount of chlorinated solvent 
recovered by the CAD system and recycled through the solvent cleaning 
system. This amount divided by the total usage in the system (i.e., the 
denominator of Equation 8 of Sec. 63.465) provides an overall cleaning 
system control efficiency.
    Through some questions from industry since the December 3, 1999 
amendments were published, it has become apparent to EPA that the term 
may be confusing. Some have questioned whether this term was meant to 
cover all solvent that is recirculated through the system, including 
liquid recycled through a distillation unit and solvent recovered from 
the CAD system. It was never EPA's intent that Ri be 
interpreted to be the total amount of solvent recirculated through a 
system. Therefore, EPA has clarified the definition of the term 
Ri by changing the phrase ``solvent recycled'' to the phrase 
``solvent recovered from the CAD system and recycled.''

F. Clarification of Sec. 63.465(b)

    The EPA is modifying Sec. 63.465(b) to remove an unnecessary cross 
reference to Sec. 63.465(f). This reference is unnecessary since 
Sec. 63.465(b) only refers to sources complying with the alternative 
standards of Sec. 63.464, while paragraph (f) of Sec. 63.465 includes 
requirements that only apply to sources complying with the standards in 
Sec. 63.463.

G. Addition of References to Sec. 63.463(h) in Sec. 63.463(e)

    The EPA inadvertently excluded references to paragraph 
Sec. 63.463(h), which includes the requirements for remote-reservoir 
continuous web cleaning machines, in the paragraphs that discussed the 
requirements for squeegee systems, air-knife systems, and combine 
squeegee and air-knife systems in Sec. 63.463(e). The EPA has corrected 
this oversight in today's action by revising the introductory paragraph 
to Sec. 63.463(e)(ix), (x), and (xi) to include a reference to 
Sec. 63.463(h).

III. Impacts

    The changes contained in these final rule amendments are 
corrections and clarifications and do not change the intended coverage 
of the halogenated solvent cleaning NESHAP (40 CFR part 63, subpart T). 
These changes will not affect the estimated emissions reductions or the 
control costs for these standards. These clarifications and corrections 
should make it easier for owners and operators of affected sources and 
for local and State authorities to understand and implement the 
requirements in 40 CFR part 63, subpart T.

IV. Administrative Requirements

A. Executive Order 12866, Regulatory Planning and Review

    Under Executive Order 12866 (58 FR 51735, October 4, 1993), EPA 
must determine whether the regulatory action is ``significant'' and 
therefore subject to review by the Office of Management and Budget 
(OMB) and the requirements of

[[Page 54421]]

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

B. Executive Order 13132 (Federalism)

    Executive Order 13132, entitled ``Federalism'' (64 FR 43255, August 
10, 1999), requires EPA to develop an accountable process to ensure 
``meaningful and timely input by State and local officials in the 
development of regulatory policies that have federalism implications.'' 
``Policies that have federalism implications'' is defined in the 
Executive Order to include regulations that have ``substantial direct 
effects on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.''
    Under section 6 of Executive Order 13132, EPA may not issue a 
regulation that has federalism implications, that imposes substantial 
direct compliance costs, and that is not required by statute, unless 
the Federal government provides the funds necessary to pay the direct 
compliance costs incurred by State and local governments, or EPA 
consults with State and local officials early in the process of 
developing the proposed regulation. The EPA also may not issue a 
regulation that has federalism implications and that preempts State law 
unless the Agency consults with State and local officials early in the 
process of developing the proposed regulation.
    This final rule will not have substantial direct effects on the 
States, on the relationship between the national government and the 
States, or on the distribution of power and responsibilities among the 
various levels of government, as specified in Executive Order 13132. 
This final rule only provides amendments to ensure that all owners or 
operators of solvent cleaning machines have appropriate and attainable 
requirements for their cleaning machines. Thus, the requirements of 
section 6 of the Executive Order do not apply to this rule.

C. Executive Order 13084, Consultation and Coordination With Indian 
Tribal Governments

    Under Executive Order 13084, EPA may not issue a regulation that is 
not required by statute, that significantly or uniquely affects the 
communities of Indian tribal governments, and that imposes substantial 
direct compliance costs on those communities, unless the Federal 
government provides the funds necessary to pay the direct compliance 
costs incurred by the tribal governments, or EPA consults with those 
governments.
    If EPA complies by consulting, Executive Order 13084 requires EPA 
to provide to OMB, in a separately identified section of the preamble 
to the rule, a description of the extent of EPA's prior consultation 
with representatives of affected tribal governments, a summary of the 
nature of their concerns, and a statement supporting the need to issue 
the regulation.
    In addition, Executive Order 13084 requires EPA to develop an 
effective process permitting elected officials and other 
representatives of Indian tribal governments ``to provide meaningful 
and timely input in the development of regulatory policies on matters 
that significantly or uniquely affect their communities.''
    These final rule amendments do not impose any duties or compliance 
costs on Indian tribal governments. Further, the final rule amendments 
provided herein do not significantly alter the control standards 
imposed by the halogenated solvent cleaning NESHAP for any source, 
including any that may affect communities of the Indian tribal 
governments. Hence, today's final rule amendments do not significantly 
or uniquely affect the communities of Indian tribal governments. 
Accordingly, the requirements of section 3(b) of Executive Order 13084 
do not apply.

D. Executive Order 13045, Protection of Children From Environmental 
Health Risks and Safety Risks

    Executive Order 13045, ``Protection of Children from Environmental 
Health Risks and Safety Risks'' (62 FR 19885, April 23, 1997) applies 
to any rule that: (1) Is determined to be ``economically significant'' 
as defined under Executive Order 12866; and (2) concerns an 
environmental health or safety risk that EPA has reason to believe may 
have a disproportionate effect on children. If the regulatory action 
meets both criteria, EPA must evaluate the environmental health or 
safety effects of the planned rule on children, and explain why the 
planned regulation is preferable to other potentially effective and 
reasonably feasible alternatives considered by the Agency.
    The EPA interprets Executive Order 13045 as applying only to those 
regulatory actions that are based on health or safety risks, so that 
the analysis required under section 5-501 of the Executive Order has 
the potential to influence the regulation. These final rule amendments 
are not subject to Executive Order 13045 because they are not an 
``economically significant'' regulatory action as defined by Executive 
Order 12866 and are based on technology performance rather than health 
or risks that may disproportionately affect children.

E. Unfunded Mandates Reform Act of 1995

    Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), Pub. 
L. 104-4, establishes requirements for Federal agencies to assess the 
effects of their regulatory actions on State, local, and tribal 
governments and the private sector. Under section 202 of the UMRA, EPA 
generally must prepare a written statement, including a cost-benefit 
analysis, for proposed and final rules with ``Federal mandates'' that 
may result in expenditures to State, local, and tribal governments, in 
aggregate, or by the private sector, of $100 million or more in any 1 
year.
    Before promulgating an EPA rule for which a written statement is 
needed, section 205 of the UMRA generally requires EPA to identify and 
consider a reasonable number of regulatory alternatives and adopt the 
least-costly, most cost-effective, or least-burdensome alternative that 
achieves the objectives of the rule. The provisions of section 205 do 
not apply when they are inconsistent with applicable law. Moreover, 
section 205 allows EPA to adopt an alternative other than the least-
costly, most cost-effective, or least-burdensome alternative if the 
Administrator publishes with the final rule an explanation why that 
alternative was not adopted.
    Before EPA establishes any regulatory requirements that may 
significantly or

[[Page 54422]]

uniquely affect small governments, including tribal governments, it 
must have developed under section 203 of the UMRA a small government 
agency plan. The plan must provide for notifying potentially affected 
small governments, enabling officials of affected small governments to 
have meaningful and timely input in the development of EPA regulatory 
proposals with significant Federal intergovernmental mandates, and 
informing, educating, and advising small governments on compliance with 
the regulatory requirements.
    The EPA has determined that these final rule amendments do not 
contain a Federal mandate that may result in expenditures of $100 
million or more for State, local, and tribal governments, in the 
aggregate or the private sector in any 1 year, and that these final 
rule amendments do not significantly or uniquely impact small 
governments, because they contain no requirements that apply to such 
governments or impose obligations upon them. The EPA has not prepared a 
budgetary impact statement or specifically addressed the selection of 
the least-costly, most cost-effective, or least-burdensome alternative.
    In addition, because small governments will not be significantly or 
uniquely affected by these final rule amendments, the EPA is not 
required to develop a plan with regard to small governments. Therefore, 
the requirements of the UMRA do not apply.

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

    The RFA requires EPA to give special consideration to the effect of 
Federal regulations on small entities and to consider regulatory 
options that might mitigate any such impacts. The EPA must prepare a 
regulatory flexibility analysis unless EPA certifies that the rule will 
not have a ``significant impact on a substantial number of small 
entities.'' Small entities include small businesses, small not-for-
profit enterprises, and small government jurisdictions.
    These final rule amendments would not have a significant impact on 
a substantial number of small entities because they clarify and make 
corrections to the promulgated halogenated solvent cleaning NESHAP, but 
impose no additional regulatory requirements on owners or operators of 
affected sources.

G. Paperwork Reduction Act

    The Information Collection Request (ICR) was submitted to the OMB 
under the Paperwork Reduction Act (44 U.S.C. 3501, et seq.) at the time 
this rule was originally promulgated. These final rule amendments to 
the halogenated solvent cleaning NESHAP will have no impact on the 
information collection burden estimates made previously. Therefore, the 
ICR has not been revised.

H. National Technology Transfer and Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (NTTAA), Pub. L. 104-113, section 12(d) (15 U.S.C. 272 
note), directs all Federal agencies 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., material 
specifications, test methods, sampling procedures, business practices, 
etc.) that are developed or adopted by one or more voluntary consensus 
standards bodies. The NTTAA directs EPA to provide Congress, through 
annual reports to OMB, with explanations when EPA does not use 
available and applicable voluntary consensus standards. This action 
does not involve the proposal of any new technical standards.

I. Congressional Review Act

    The Congressional Review Act, 5 U.S.C. 801, et seq., as added by 
the SBREFA, generally provides that before a rule may take effect, the 
agency promulgating the rule must submit a rule report, which includes 
a copy of the rule, to each House of the Congress and to the 
Comptroller General of the United States. The EPA will submit a report 
containing this final rule and other required information to the United 
States Senate, the United States House of Representatives, and the 
Comptroller General of the United States prior to publication of this 
rule in the Federal Register. A major rule cannot take effect until 60 
days after it is published in the Federal Register. These final 
amendments are 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, Continuous web 
cleaning, Film cleaning, Halogenated solvent cleaning machines, 
Hazardous substances.

    Dated: August 29, 2000.
Robert D. Brenner,
Acting 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 for part 63 continues to read as follows:

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

Subpart T--National Emission Standards for Halogenated Solvent 
Cleaning

    2. Section 63.463 is amended by:
    a. Revising paragraph (a)(4);
    b. Revising paragraph (d)(10);
    c. Revising paragraphs (e) introductory text, (e)(2)(vii) 
introductory text, (ix) introductory text, (x) introductory text, and 
(xi) introductory text;
    d. Revising paragraphs (g)(3)(iv) and (vii); and
    e. Revising paragraph (h)(2)(v).
    The revisions read as follows:


Sec. 63.463  Batch vapor and in-line cleaning machine standards.

    (a) * * *
    (4) Each vapor cleaning machine shall be equipped with a device 
that shuts off the sump heat if the sump liquid solvent level drops to 
the sump heater coils. This requirement does not apply to a vapor 
cleaning machine that uses steam to heat the solvent.
* * * * *
    (d) * * *
    (10) Each operator of a solvent cleaning machine shall complete and 
pass the applicable sections of the test of solvent cleaning procedures 
in appendix A to this part if requested during an inspection by the 
Administrator.
* * * * *
    (e) Each owner or operator of a solvent cleaning machine complying 
with paragraph (b), (c), (g), or (h) of this section shall comply with 
the requirements specified in paragraphs (e)(1) through (4) of this 
section.
* * * * *
    (2) * * *
    (vii) If a carbon adsorber in conjunction with a lip exhaust or 
other exhaust internal to the cleaning machine is used to comply with 
these standards, the owner or operator shall comply with the following 
requirements:
* * * * *
    (ix) If a squeegee system is used to comply with the continuous web

[[Page 54423]]

cleaning requirements of paragraph (g)(3)(iii) or (h)(2)(i) of this 
section, the owner or operator shall comply with the following 
requirements.
* * * * *
    (x) If an air knife system is used to comply with the continuous 
web cleaning requirements of paragraph (g)(3)(iii) or (h)(2)(i) of this 
section, the owner or operator shall comply with the following 
requirements.
* * * * *
    (xi) If a combination squeegee and air knife system is used to 
comply with the continuous web cleaning requirements of paragraph 
(g)(3)(iii) or (h)(2)(i) of this section, the owner or operator shall 
comply with the following requirements.
* * * * *
    (g) * * *
    (3) * * *
    (iv) Each vapor cleaning machine shall be equipped with a device 
that shuts off the sump heat if the sump liquid solvent level drops to 
the sump heater coils. This requirement does not apply to a vapor 
cleaning machine that uses steam to heat the solvent.
* * * * *
    (vii) Each cleaning machine that uses a lip exhaust or any other 
exhaust within the solvent cleaning machine shall be designed and 
operated to route all collected solvent vapors through a properly 
operated and maintained carbon adsorber that meets the requirements of 
either paragraph (e)(2)(vii) or (g)(2) of this section.
* * * * *
    (h) * * *
    (2) * * *
    (v) Each cleaning machine that uses a lip exhaust or any other 
exhaust within the solvent cleaning machine shall be designed and 
operated to route all collected solvent vapors through a properly 
operated and maintained carbon adsorber that meets the requirements of 
either paragraph (e)(2)(vii) or (g)(2) of this section.
* * * * *

    3. Section 63.464 is amended by revising paragraph (d) to read as 
follows:


Sec. 63.464  Alternative standards.

* * * * *
    (d) As an alternative to meeting the requirements in Sec. 63.463, 
each owner or operator of a continuous web cleaning machine can 
demonstrate an overall cleaning system control efficiency of 70 percent 
or greater using the procedures in Sec. 63.465(g). This demonstration 
can be made for either a single cleaning machine or for a solvent 
cleaning system that contains one or more cleaning machines and 
ancillary equipment, such as storage tanks and distillation units. If 
the demonstration is made for a cleaning system, the facility must 
identify any modifications required to the procedures in Sec. 63.465(g) 
and they must be approved by the Administrator.

    4. Section 63.465 is amended by revising paragraph (b) and (h)(1) 
to read as follows:


Sec. 63.465  Test methods.

* * * * *
    (b) Except as provided in paragraph (g) of this section for 
continuous web cleaning machines, each owner or operator of a batch 
vapor or in-line solvent cleaning machine complying with Sec. 63.464 
shall, on the first operating day of every month ensure that the 
solvent cleaning machine system contains only clean liquid solvent. 
This includes, but is not limited to, fresh unused solvent, recycled 
solvent, and used solvent that has been cleaned of soils. A fill line 
must be indicated during the first month the measurements are made. The 
solvent level within the machine must be returned to the same fill-line 
each month, immediately prior to calculating monthly emissions as 
specified in paragraph (c) of this section. The solvent cleaning 
machine does not have to be emptied and filled with fresh unused 
solvent prior to the calculations.
* * * * *
    (h) * * *
    (1) Using the records of all solvent additions, solvent deletions, 
and solvent recovered from the carbon adsorption system for the 
previous monthly reporting period required under Sec. 63.467(e), 
determine the overall cleaning system control efficiency 
(Eo) using Equation 8 of this section as follows:
[GRAPHIC] [TIFF OMITTED] TR08SE00.003


Where:

Eo = overall cleaning system control efficiency.
Ri = the total amount of halogenated HAP liquid solvent 
recovered from the carbon adsorption system and recycled to the solvent 
cleaning system during the most recent monthly reporting period, i, 
(kilograms of solvent per month).
Sai = the total amount of halogenated HAP liquid solvent 
added to the solvent cleaning system during the most recent monthly 
reporting period, i, (kilograms of solvent per month).
SSRi = the total amount of halogenated HAP solvent removed 
from the solvent cleaning system in solid waste, obtained as described 
in paragraph (c)(2) of this section, during the most recent monthly 
reporting period, i, (kilograms of solvent per month).

[FR Doc. 00-22974 Filed 9-7-00; 8:45 am]
BILLING CODE 6560-50-P