[Federal Register Volume 59, Number 231 (Friday, December 2, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-28974]


[[Page Unknown]]

[Federal Register: December 2, 1994]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 9 and 63

[AD-FRL-5111-3]
RIN 2060-AC31

 

National Emission Standards for Hazardous Air Pollutants: 
Halogenated Solvent Cleaning

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule and test method.

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SUMMARY: This final rule promulgates national emission standards for 
hazardous air pollutants for halogenated solvent cleaners. These 
standards implement section 112 of the Clean Air Act (Act) and are 
based on the Administrator's determination that halogenated solvent 
cleaning machines emit halogenated organic chemicals identified in the 
Act list of 189 hazardous air pollutants (HAP). The halogenated solvent 
cleaner NESHAP requires batch vapor solvent cleaning machines and in-
line solvent cleaning machines to meet emission standards reflecting 
the application of the maximum achievable control technology for major 
and area sources; area source batch cold cleaning machines are required 
to achieve generally available control technology. The rule regulates 
the emissions of the following halogenated HAP solvents: methylene 
chloride (MC), perchloroethylene (PCE), trichloroethylene (TCE), 1,1,1-
trichloroethane (TCA), carbon tetrachloride (CT), and chloroform (C).
    The EPA is also finalizing Method 307 with the standard. This 
method can be used to demonstrate compliance with the idling standard.

EFFECTIVE DATE: December 2, 1994. See Supplementary Information section 
concerning judicial review.

ADDRESSES: Background Information Document. The background information 
document (BID) for the promulgated standards may be obtained from the 
U.S. EPA Library (MD-35), Research Triangle Park, North Carolina 27711, 
telephone number (919) 541-2777. Please refer to ``National Emission 
Standards for Hazardous Air Pollutants, Halogenated Solvent Cleaning--
Background Information for Final Standards,'' EPA No. 453/R-94-071. The 
BID contains: (1) a summary of all the public comments made on the 
proposed standards and the Administrator's response to the comments; 
and (2) a summary of the changes made to the standards since proposal. 
A reasonable fee may be charged for copying.
    Docket. A docket, No. A-92-39, containing information considered by 
the EPA in development of the promulgated standards, is available for 
public inspection between 8:00 a.m. and 4:00 p.m., Monday through 
Friday, at the following address: U.S. Environmental Protection Agency, 
Air and Radiation Docket and Information Center (formerly known as the 
Air Docket) (MC-6102), 401 M Street SW., Washington, DC 20460 [phone: 
(202) 260-7548]. The docket is located at the above address in Room M-
1500, Waterside Mall (ground floor). A reasonable fee may be charged 
for copying.

FOR FURTHER INFORMATION CONTACT: For information concerning the final 
standard, 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.

SUPPLEMENTARY INFORMATION: National emission standards for hazardous 
air pollutants (NESHAP) for halogenated solvent cleaners were proposed 
in the Federal Register on November 29, 1993 (58 FR 62566). This 
Federal Register action announces the EPA's final decisions on the 
rule. Under section 307(b)(1) of the Act, judicial review of the NESHAP 
is available only by the filing of a petition for review in the U.S. 
Court of Appeals for the District of Columbia Circuit within 60 days of 
today's publication of this rule. Under section 307(b)(2) of the Act, 
the requirements that are the subject of today's notice may not be 
challenged later in civil or criminal proceedings brought by the EPA to 
enforce these requirements.

I. The Standards

    National emission standards for major sources of hazardous air 
pollutants established under section 112 of the Act reflect:

    ``* * * the maximum degree of reduction in emissions of the HAP 
* * * that the Administrator, taking into consideration the cost of 
achieving such emission reduction, and any nonair quality health and 
environmental impacts and energy requirements, determine is 
achievable for new or existing sources in the category or 
subcategory to which such emission standards applies * * *'' (the 
Act section 112(d)(2)).

Area sources are regulated with a MACT standard, unless there is 
justification for regulating them under GACT.
    The promulgated standard includes multiple alternatives to allow 
owners or operators maximum compliance flexibility. These alternatives 
include an equipment standard, in conjunction with work practice 
requirements, and an alternative overall solvent emissions standard. 
The idling emission limit and the alternative overall solvent emission 
standard are not available to owners or operators of batch cold 
cleaning machines.
    If an owner or operator of a batch vapor or in-line cleaning 
machine elects to comply with the equipment standard, they must install 
one of the control combinations listed in the regulation, use an 
automated parts handling system to process all parts, and follow 
multiple work practices. As an alternative to selecting one of the 
equipment control combinations listed in the regulation, an owner or 
operator may demonstrate that the batch vapor or in-line cleaning 
machine can meet the idling mode emission limit specified in the 
standards. In addition to maintaining this idling mode emission limit, 
the owner or operator of a batch vapor or in-line solvent cleaning 
machine must use an automated parts handling system to process all 
parts and comply with the work practice standards. A third alternative 
for complying with these standards is to comply with the overall 
solvent emissions limit. An owner or operator complying with the 
overall solvent emissions limit is required to ensure that the 
emissions from each solvent cleaning machine are less than or equal to 
the solvent emission levels specified in the standard. Under this 
alternative standard, an owner or operator is not required to use an 
automated parts handling system or to comply with the work practice 
standards.
    The batch cold cleaning machine standard is an equipment standard. 
However, those owners or operators choosing the equipment options 
without the water layer must also comply with work practice 
requirements. There is no idling standard or overall solvent emissions 
standard for batch cold cleaning machines. Batch cold cleaning machines 
located at nonmajor sources are exempt from title V permit 
requirements.
    Section 114(a)(3) of the amended CAA requires enhanced monitoring 
and compliance certification of all major stationary sources. The 
annual compliance certifications certify whether compliance has been 
continuous or intermittent. Enhanced monitoring shall be capable of 
detecting deviations from each applicable emission limit or standard 
with sufficient representativeness, accuracy, precision, reliability, 
frequency and timeliness to determine if compliance is continuous 
during a reporting period. The monitoring in this regulation satisfies 
the requirements of enhanced monitoring.

II. Summary of Impacts

    These standards will reduce nationwide emissions of hazardous air 
pollutants (HAP) from halogenated solvent cleaning machines by 77,400 
Mg/yr (85,300 tons per year), or 63 percent by 1997 compared to the 
emissions that would result in the absence of the standards. No adverse 
secondary air impacts, water or solid waste impacts are anticipated 
from the promulgation of these standards.
    The national annual energy usage due to the installation of the 
required control devices is expected to increase from 12.9 million KWH/
yr to 66.9 million KWH/yr, which is equivalent to approximately 29.3 
thousand barrels of oil. These estimates do not include energy savings 
from reduced solvent use.
    The implementation of this regulation is expected to result in an 
overall annual national net savings of $19 million. This includes a net 
annualized savings from installation of control devices of $30.5 
million and a total monitoring, reporting, and recordkeeping costs of 
$11.6 million. These savings will come from the significant decrease in 
solvent emissions and, therefore, solvent consumption, which outweigh 
the overall cost of air pollution control equipment and monitoring and 
recordkeeping costs.
    The economic impact analysis done at proposal showed that the 
economic impacts from the proposed standard would be insignificant. The 
economic impact analysis has not been revised for promulgation because 
the changes in costs are not expected to have any effect on the results 
of the analysis. While the estimated annual costs for the regulation 
have increased since proposal, there are still cost savings for most 
affected entities. Only entities with small or medium-sized cleaning 
machines will not have cost savings, and the costs for the selected 
regulatory alternatives for these entities have changed very little 
since proposal. Since those entities that do not have cost savings were 
the only ones analyzed in the proposal, and these costs have changed 
little, the results from the economic impact analysis at proposal 
should still hold for promulgation.

III. Significant Changes to the Proposed Standards

A. Public Participation

    Prior to proposal of the standards, interested parties were advised 
by public notice in the Federal Register (57 FR 46854), of a meeting of 
the National Air Pollution Control Techniques Advisory Committee to 
discuss the halogenated solvent cleaner source recommended for 
proposal. This meeting was held on November 17 and 18, 1992. The 
meeting was open to the public and each attendee was given an 
opportunity to comment on the standards recommended for proposal.
    The standards were proposed and published in the Federal Register 
on November 29, 1993 (58 FR 62566). The preamble to the proposed 
standards discussed the availability of the BID, which described the 
regulatory alternatives considered and the impacts of those 
alternatives. Public comments were solicited at the time of proposal, 
and copies of the BID were distributed to interested parties.
    To provide interested persons the opportunity for oral presentation 
of data, views, or arguments concerning the proposed standards, a 
public hearing was offered at proposal; however, one was not requested. 
The public comment period was from November 29, 1993 to January 28, 
1994. Fifty-seven comment letters were received. The comments have been 
carefully considered, and changes have been made in the proposed 
standards when determined by the Administrator to be appropriate.

B. Comments on the Proposed Standards

    Comments on the proposed standards were received from 57 commenters 
composed mainly of States, solvent cleaning machine users, solvent 
cleaning machine vendors, industry and industry trade associations. A 
detailed discussion of these comments and responses can be found in the 
promulgation BID, which is referenced in the ADDRESSES section of this 
preamble. The summary of comments and response in the BID serve as the 
basis for the revisions that have been made to the standards between 
proposal and promulgation. Most of the comment letters contained 
multiple comments. The comments have been divided into the following 
areas:
     Selection of pollutants and source categories for 
regulation.
     Emission control options.
     Regulatory alternatives.
     Benefits analysis/economics.
     Equipment, idling, work practice and overall solvent 
emission limit standards.
     Modification and reconstruction considerations.
     Monitoring requirements.
     Recordkeeping and reporting requirements.
     Operating permit program.
     Clarifications.
     Miscellaneous.

C. Significant Changes

    Several changes have been made since the proposal of these 
standards. The majority of the changes have been made to clarify 
portions of the rule that were unclear to the commenters. Other changes 
include adding additional control combinations and an equation that 
allows cleaning machines that do not have a solvent vapor/air interface 
area to comply with the standard by meeting a solvent emission limit 
based on cleaning capacity. A summary of the major changes is presented 
below.
    (1) Several comments were made about the complexity of the rule, 
with many commenters offering suggested changes to clarify different 
sections. Many of these recommendations have been incorporated into the 
final rule. For example, the standards for batch cold cleaning machines 
have been moved to a separate section, the operator test has been 
included as appendix B, and a table summarizing the applicability of 
the General Provisions to this rule has been included in appendix C.
    (2) The applicability section of the rule has been clarified to 
ensure that the standard regulates only those solvents originally 
intended for inclusion; namely, MC, PCE, TCE, TCA, CT, and C. Several 
commenters were concerned that, as proposed, the rule could be 
interpreted to regulate non-halogenated solvents contaminated by trace 
amounts of halogenated solvent. The EPA never intended for these 
solvents to be included in these standards.
    (3) An equation and table have been added to allow solvent cleaning 
machines that do not have a solvent vapor/air interface area to comply 
with these standards. Several new cleaning machines are currently being 
developed by industry that cannot install the equipment control devices 
included in this final rule, do not have an idling mode, and do not 
have a solvent vapor/air interface area to relate to the solvent 
emission limit. The equation and table in the rule allow owners or 
operators of halogenated solvent cleaning machines without a solvent 
vapor/air interface area to comply with the standard by meeting an 
overall solvent emissions limit based on cleaning capacity that is 
equivalent to the overall solvent emissions limit for machines with a 
solvent vapor/air interface.
    (4) The list of equipment combinations has been modified to remove 
overlapping controls and to add carbon adsorbers to the control 
combinations.
    There are multiple control combinations available for meeting the 
rule, many of which are pollution prevention measures. Many of these 
options also reduce worker exposure. However, some sources may rely on 
lip exhausts instead in order to meet OSHA requirements. Use of a lip 
exhaust without any controls, while reducing worker exposure on the one 
hand, would dramatically increase the overall emissions to air. Thus, 
if lip exhausts are used on solvent cleaning machines, the rule 
requires carbon adsorption controls (which have been added explicitly 
as a control option in the final rule). Although the lip exhaust-carbon 
adsorption combination reduces worker exposure and overall emissions to 
air, it may impose additional cost and burden on sources as well as on 
the environment for a number of reasons. First, carbon adsorption units 
are generally more expensive than other controls listed in the options. 
Second, these units may present cross-media impacts such as effluent 
discharges if not properly operated and maintained, and spent carbon 
beds that have to be disposed of as hazardous waste. Thus, when making 
decisions about what controls to install on halogenated solvent 
cleaning machines to meet the requirements of this rule, all of these 
factors should be weighed and pollution prevention measures are 
encouraged wherever possible.
    The EPA acknowledges that data show little additional benefit is 
achieved by the use of a working-mode cover in the presence of reduced 
room draft. Therefore, these controls are no longer included in the 
same control combination.
    (5) Some changes have also been made to the compliance and 
reporting schedules. The initial notification report deadline for 
existing sources has been extended from 90 to 270 days after 
promulgation. This overrides the 120 day deadline in the final part 63 
General Provisions. This was done to allow more time for the delegation 
of this rule to the States and to allow more time to process the 
reports from the large number of facilities affected by this rule. The 
initial statement of compliance report deadline for new and existing 
sources has been extended from 30 days to 150 days after the compliance 
date to allow time for owners or operators to determine compliance with 
the 3-month rolling average emission limit. The compliance time for 
existing sources has been extended from 2 to 3 years. This extension 
has been provided to allow sources the maximum flexibility in complying 
with these standards, including allowing time to consider alternative 
cleaning technologies. This change is consistent with the General 
Provisions (Sec. 63.6(b)(3)). The exceedance report schedule has been 
changed to include a biannual exceedance report if there is not an 
exceedance. This change is consistent with the General Provisions 
(Sec. 63.10(e)). Exceedance reports must still be submitted quarterly 
if there is an exceedance.
    (6) Several commenters stated that the rule was complex and 
difficult to understand. They stated that additional guidance should be 
provided, particularly for small businesses. The EPA agrees that 
guidance would be helpful and has developed a brochure summarizing the 
rule, and will be developing a guidance manual that is scheduled for 
publication in January 1995. This guidance manual includes a detailed 
summary of the rule, example forms that can be used for reporting and 
recordkeeping, and additional assistance for evaluating alternative 
cleaning technologies.
    (7) Several commenters recommended that the EPA reduce the 
monitoring frequency of the emission control equipment. The EPA 
evaluated the monitoring frequencies and has added a provision to the 
final rule that allows the hoist monitoring frequency to decrease from 
monthly to quarterly if, the owner or operator has operated the hoist 
for one year without an exceedance in the hoist speed. The EPA has also 
changed the reduced room draft (RRD) monitoring frequency from weekly 
to quarterly with weekly monitoring of the parameters used to obtain 
the RRD.
    (8) Several comments were received on the batch cold cleaning 
machine equipment requirement provisions. A number of commenters 
reported the use of TCA, MC, and TCE in noncarburetor batch cold 
cleaning machine operations. The commenters stated that the proposed 
water layer control option was not always possible for these cleaning 
machines, particularly when TCA or TCE solvents are used. In order to 
address this issue, alternative control equipment options were added to 
the final rule to allow for the use of an increased freeboard ratio and 
cover, or remote-reservoir and cover, in lieu of a water layer and 
cover. An owner or operator complying with these alternative options 
must also comply with work practice requirements. The final rule also 
allows an owner or operator of a batch cold cleaning machine to use 
alternative control equipment, if demonstrated to be equivalent to the 
equipment requirements cited in the final rule and approved by the 
Administrator.

IV. Administrative Requirements

A. Docket

    The docket is an organized and complete file of all the information 
considered by the EPA in the development of this rulemaking. The docket 
is a dynamic file, since 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 statement of basis and purpose of the proposed and 
promulgated standards and the EPA responses to significant comments, 
the contents of the docket will serve as the record in case of judicial 
review (section 307(d)(7)(A)).

B. Paperwork Reduction Act

    Information collection requirements associated with this regulation 
(those included in 40 CFR Part 63, Subpart A and Subpart T) have been 
approved by the Office of Management and Budget (OMB) under the 
provisions of the Paperwork Reduction Act of 1980, 44 U.S.C. 3501 et 
seq. and have been assigned OMB control number (2060-0273). An 
Information Collection Request (ICR) document has been prepared by the 
EPA (ICR No. 1652.02) to reflect the changed information requirements 
of the final rule and has been submitted to OMB for review. A copy may 
be obtained from Sandy Farmer, Information Policy Branch, EPA 2136, 401 
M St., SW, Washington, DC 20460, or by calling (202) 260-2740.
    The annual respondent burden and costs averaged over the first 3 
years for batch vapor and in-line cleaning machine subcategories are 
359,000 hours and $12.0 million. Since the reporting burden for some of 
the required activities will be incurred only once, the average annual 
burden for batch vapor and in-line cleaning machine subcategories will 
decrease after the first two years of implementation. For the batch 
cold cleaning machine subcategory, the annual respondent burden and 
costs averaged over the first 3 years are 33,000 hours and $1.1 
million. The batch cold cleaning machine subcategory is not expected to 
incur costs after the initial activities.
    This collection of information is estimated to have an annual 
public reporting and recordkeeping burden averaging 42 hours per 
facility over the first 3 years. These burden estimates include time 
for reviewing instructions, searching existing data sources, gathering 
and maintaining the data needed, and completing and reviewing the 
collection of information.
    Several commenters to the proposed rule in recognizing this burden 
noted that the rule was complex and difficult to understand, and 
suggested that additional guidance be provided, particularly for small 
businesses. To address these concerns the Emission Standards Division 
and the Small Business Assistance Program are developing a brochure to 
summarize this rule, and will be developing a guidance manual scheduled 
to be published in January 1995. This manual will include a detailed 
summary of the rule, example forms for reporting and recordkeeping, to 
alleviate at least in part the paperwork burden, and additional 
material for evaluating alternative cleaning technologies.
    Send comments regarding the burden estimate or any other aspects of 
this collection of information, including suggestions for reducing this 
burden to Chief, Information Policy Branch (2/36), U.S. Environmental 
Protection Agency, 401 M St. SW., Washington, DC 20460; and to the 
Office of Information and Regulatory Affairs, Office of Management and 
Budget, Washington, DC 20503, marked ``Attention: Desk Officer for the 
EPA.''

C. Executive Order 12866

    Under Executive Order 12866 (58 FR 51735 (October 4, 1993)) the 
Agency must determine whether the regulatory action is ``significant'' 
and therefore subject to OMB review and the requirements of the 
Executive Order. The 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 the Executive Order, OMB has notified EPA 
that it considers this a ``significant regulatory action'' within the 
meaning of the Executive Order. The EPA has submitted this action to 
OMB for review. Changes made in response to OMB suggestions or 
recommendations will be documented in the public record.

D. Regulatory Flexibility Act

    The Regulatory Flexibility Act (or RFA, Pub. L. 96-354, September 
19, 1980) requires Federal agencies to give special consideration to 
the impact of regulation on small businesses. The RFA specifies that a 
final regulatory flexibility analysis must be prepared if a proposed 
regulation will have a significant economic impact on a substantial 
number of small entities. To determine whether a final RFA is required, 
a screening analysis, otherwise known as an initial RFA, is necessary.
    Regulatory impacts are considered significant if:
    (1) Annual compliance costs increase total costs of production by 
more than 5 percent; or
    (2) Annual compliance costs as a percent of sales are at least 20 
percent (percentage points) higher for small entities; or
    (3) Capital cost of compliance represents a significant portion of 
capital available to small entities; or
    (4) The requirements of the regulation are likely to result in 
closures of small entities. A ``substantial number'' of small entities 
is generally considered to be more than 20 percent of the small 
entities in the affected industry. Since the economic analysis deals 
only with small entities (in this case, facilities), it is also an 
initial RFA, and conclusions about the impacts on small entities can be 
drawn from what was done there already. Each of the criteria for 
significant impacts will be considered in turn.
    The largest increase in total cost of production from increased 
emission control is 0.61 percent (SIC 359--Industrial Machinery, 
n.e.c.). This figure is well below the significant-impact threshold of 
five percent.
    Assessing the differential impacts, measured by a comparison of 
compliance costs as a percent of sales for small and large entities, is 
more difficult as large model facilities were not analyzed in the 
economic impact analysis. Treatment of this small business impacts 
criterion involves creating two large model facilities.
    It is assumed that large facilities use large solvent cleaning 
machines, then compliance costs for large cleaning machines are 
negative, and are thus savings. To be conservative, it is assumed here 
that large model facilities possess five very large solvent cleaning 
machines, so that a ``maximum savings'' case is modelled. This case is 
important as it models the maximum cost differential between large and 
small facilities.
    Large model facilities were created for SICs 359 (Industrial 
Machinery, n.e.c.) and 254 (Partitions and Fixtures). SIC 359 was 
chosen because the small model facilities in this group experience the 
highest cost absorption impacts when compared with other small model 
facilities. SIC 254 was used because it had the smallest average per-
facility revenue of facilities with greater than 100 employees. Thus, 
if they incur the same absolute savings as other large facilities, 
their relative percentage savings will be the highest, and they will 
experience the greatest cost savings in percentage terms as a result of 
the standard. The cost differentials are in no case larger than one 
percentage point. Thus, by this criterion, small business impacts are 
not deemed significant.
    The third criterion focuses on the amount of capital available to 
small businesses or facilities. Since the capital costs incurred as a 
result of investment in control equipment needed for small businesses 
to meet the standard was less than 10 percent of the businesses' total 
assets in all 39 affected SIC codes, it was concluded that the total 
assets of small facilities will not be so adversely affected as to 
prohibit the procurement of outside financing. (Examining an increase 
in capital costs as a percentage of total assets is a measure of the 
ability of a firm or facility to meet this capital costs increase.) The 
conclusion, then, is that lack of available capital will not be an 
obstacle for small facilities in complying with the regulation.
    Criterion number four stipulates that small business impacts are 
significant if compliance leads to closure. The only implication of 
closure in the economic impact analysis is found in the section on 
earnings impacts. Here it was found that, under worst-case assumptions, 
closures might occur in only two SIC codes, 254 and 259 (Miscellaneous 
Furniture and Fixtures), given their low rate of profitability in the 
baseline. If this indeed occurs, the question of whether or not these 
closures make up a substantial portion of small entities must be 
addressed. The actual number of impacted facilities in the 39 impacted 
SICs is unknown. If it can be assumed that each SIC is impacted in the 
same proportion, a proxy for the share of impacted facilities 
represented by SIC codes 254 and 259 is the total number of facilities 
in these SIC codes as a share of the total number of potentially 
impacted firms. SIC codes 254 and 259 hold a combined total 3,194 small 
facilities. This makes up 3.4 percent of the total 93,121 small 
facilities in all 39 SIC codes. Thus, in the extreme case that some 
closures result, the number of closures is estimated to be far less 
than the amount required to impact a substantial number of facilities.
    In conclusion, and pursuant to section 605(b) of the Regulatory 
Flexibility Act, 5 U.S.C. 605(b), the Administrator certifies that this 
rule will not have a significant economic impact on a substantial 
number of small entities. The basis for the certification is that the 
economic impacts for small entities do not meet or exceed the four 
criteria in the Guidelines to the Regulatory Flexibility Act of 1980, 
as shown above. Further information on the initial RFA is available in 
the background information package (see Background Information Document 
section near the beginning of this preamble).

List of Subjects in 40 CFR Parts 9 and 63

    Environmental Protection, Air pollution control, Hazardous 
substances, Halogenated solvent cleaning machines, Reporting and 
recordkeeping requirements.

    Dated: November 15, 1994.
Carol M. Browner,
Administrator.

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

PART 9--[AMENDED]

    1. The authority citation for part 9 continues to read as follows:

    Authority: 7 U.S.C. 135 et seq., 135-136y; 15 U.S.C. 2001, 2003, 
2005, 2006, 2601-2671; 21 U.S.C. 331j, 346a, 348; 31 U.S.C. 9701; 33 
U.S.C. 1251 et seq., 1311, 1313d, 1314, 1321, 1326, 1330, 1344, 
1345(d) and (e), 1361; E.O. 11735, 38 FR 21243, 3 CFR, 1971-1975 
Comp. p. 973; 42 U.S.C. 241, 242b, 243, 246, 300f, 300g, 300g-1, 
300g-2, 300g-3, 300g-4, 300g-5, 300g-6, 300j-1, 300j-2, 300j-3, 
300j-4, 300j-9, 1857 et seq., 6901-6992k, 7401-7671q, 7542, 9601-
9657, 11023, 11048.

    2. Section 9.1 is amended by adding in numerical order a new entry 
to the table under the indicated heading to read as follows:


Sec. 9.1  OMB approvals under the Paperwork Reduction Act.

* * * * *

------------------------------------------------------------------------
                                                             OMB control
                      40 CFR citation                            No.    
------------------------------------------------------------------------
                                                                        
                                  *****                                 
National Emission Standards for Hazardous Air Pollutants                
 for Source Categories:                                                 
                                                                        
                                                                        
                                  *****                                 
63.467-63.468..............................................    2060-0273
                                                                        
                                                                        
                                  *****                                 
------------------------------------------------------------------------

PART 63--[AMENDED]

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

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

    2. Part 63 is amended by adding subpart T to read as follows:
Subpart T--National Emission Standards for Halogenated Solvent Cleaning
Secs.
63.460 Applicability and designation of source.
63.461 Definitions.
63.462 Batch cold cleaning machine standards.
63.463 Batch vapor and in-line cleaning machine standards.
63.464 Alternative standards.
63.465 Test methods.
63.466 Monitoring procedures.
63.467 Recordkeeping requirements.
63.468 Reporting requirements.
63.469 Equivalent methods of control.

Subpart T--National Emission Standards for Halogenated Solvent 
Cleaning


Sec. 63.460  Applicability and designation of source.

    (a) The provisions of this subpart apply to each individual batch 
vapor, in-line vapor, in-line cold, and batch cold solvent cleaning 
machine that uses any solvent containing methylene chloride (CAS No. 
75-09-2), perchloroethylene (CAS No. 127-18-4), trichloroethylene (CAS 
No. 79-01-6), 1,1,1-trichloroethane (CAS No. 71-55-6), carbon 
tetrachloride (CAS No. 56-23-5) or chloroform (CAS No. 67-66-3), or any 
combination of these halogenated HAP solvents, in a total concentration 
greater than 5 percent by weight, as a cleaning and/or drying agent. 
The concentration of these solvents may be determined using EPA test 
method 18, material safety data sheets, or engineering calculations.
    (b) Except as noted in appendix C (General Provisions Applicability 
to Subpart T) of this subpart, the provisions of subpart A of this part 
(General Provisions) apply to owners or operators of any solvent 
cleaning machine meeting the applicability criteria of paragraph (a) of 
this section.
    (c) Each solvent cleaning machine subject to this subpart that 
commences construction or reconstruction after November 29, 1993, shall 
achieve compliance with the provisions of this subpart immediately upon 
startup or by December 2, 1994, whichever is later.
    ``(d) Each solvent cleaning machine subject to this subpart that 
commenced construction or reconstruction on or before November 29, 
1993, shall achieve compliance with the provisions of this subpart no 
later than.
    (e) In delegating implementation and enforcement authority to a 
State under section 112(d) of the Act, the authority contained in 
paragraph (f) of this section shall be retained by the Administrator 
and not transferred to a State.
    (f) The authority conferred in Sec. 63.463(d)(9) and Sec. 63.469 
will not be delegated to any State.


Sec. 63.461  Definitions.

    Unless defined below, all terms used in this subpart are used as 
defined in the 1990 Clean Air Act, or in subpart A of 40 CFR part 63:
    Administrator means the Administrator of the United States 
Environmental Protection Agency or his or her authorized representative 
(e.g., State that has been delegated the authority to implement the 
provisions of this part.)
    Air blanket means the layer of air inside the solvent cleaning 
machine freeboard located above the solvent/air interface. The 
centerline of the air blanket is equidistant between the sides of the 
machine.
    Automated parts handling system means a mechanical device that 
carries all parts and parts baskets at a controlled speed from the 
initial loading of soiled or wet parts through the removal of the 
cleaned or dried parts. Automated parts handling systems include, but 
are not limited to, hoists and conveyors.
    Batch cleaning machine means a solvent cleaning machine in which 
individual parts or a set of parts move through the entire cleaning 
cycle before new parts are introduced into the solvent cleaning 
machine. An open-top vapor cleaning machine is a type of batch cleaning 
machine. A solvent cleaning machine, such as a ferris wheel cleaner, 
that cleans multiple batch loads simultaneously and is manually loaded 
is a batch cleaning machine.
    Carbon adsorber means a bed of activated carbon into which an air-
solvent gas-vapor stream is routed and which adsorbs the solvent on the 
carbon.
    Clean liquid solvent means fresh unused solvent, recycled solvent, 
or used solvent that has been cleaned of soils (e.g., skimmed of oils 
or sludge and strained of metal chips).
    Cleaning capacity means, for a cleaning machine without a solvent/
air interface, the maximum volume of parts that can be cleaned at one 
time. In most cases, the cleaning capacity is equal to the volume 
(length times width times height) of the cleaning chamber.
    Cold cleaning machine means any device or piece of equipment that 
contains and/or uses liquid solvent, into which parts are placed to 
remove soils from the surfaces of the parts or to dry the parts. 
Cleaning machines that contain and use heated, nonboiling solvent to 
clean the parts are classified as cold cleaning machines.
    Consumption means the amount of halogenated hazardous air pollutant 
solvent added to the solvent cleaning machine.
    Cover means a lid, top, or portal cover that shields the solvent 
cleaning machine openings from air disturbances when in place and is 
designed to be easily opened and closed without disturbing the vapor 
zone. Air disturbances include, but are not limited to, lip exhausts, 
ventilation fans, and general room drafts. Types of covers include, but 
are not limited to, sliding, biparting, and rolltop covers.
    Downtime mode means the time period when a solvent cleaning machine 
is not cleaning parts and the sump heating coils, if present, are 
turned off.
    Dwell means the technique of holding parts within the freeboard 
area but above the vapor zone of the solvent cleaning machine. Dwell 
occurs after cleaning to allow solvent to drain from the parts or parts 
baskets back into the solvent cleaning machine.
    Dwell time means the required minimum length of time that a part 
must dwell, as determined by Sec. 63.465(d).
    Emissions means halogenated hazardous air pollutant solvent 
consumed (i.e., halogenated hazardous air pollutant solvent added to 
the machine) minus the liquid halogenated hazardous air pollutant 
solvent removed from the machine and the halogenated hazardous air 
pollutant solvent removed from the machine in the solid waste.
    Existing means any solvent cleaning machine the construction or 
reconstruction of which was commenced on or before November 29, 1993.
    Freeboard area means; for a batch cleaning machine, the area within 
the solvent cleaning machine that extends from the solvent/air 
interface to the top of the solvent cleaning machine; for an in-line 
cleaning machine, it is the area within the solvent cleaning machine 
that extends from the solvent/air interface to the bottom of the 
entrance or exit opening, whichever is lower.
    Freeboard height means; for a batch cleaning machine, the distance 
from the solvent/air interface, as measured during the idling mode, to 
the top of the cleaning machine; for an in-line cleaning machine, it is 
the distance from the solvent/air interface to the bottom of the 
entrance or exit opening, whichever is lower, as measured during the 
idling mode.
    Freeboard ratio means the ratio of the solvent cleaning machine 
freeboard height to the smaller interior dimension (length, width, or 
diameter) of the solvent cleaning machine.
    Freeboard refrigeration device (also called a chiller) means a set 
of secondary coils mounted in the freeboard area that carries a 
refrigerant or other chilled substance to provide a chilled air blanket 
above the solvent vapor. A primary condenser capable of meeting the 
requirements of Sec. 63.463(e)(2)(i) is defined as both a freeboard 
refrigeration device and a primary condenser for the purposes of these 
standards.
    Halogenated hazardous air pollutant solvent or halogenated HAP 
solvent means methylene chloride (CAS No. 75-09-2), perchloroethylene 
(CAS No. 127-18-4), trichloroethylene (CAS No. 79-01-6), 1,1,1-
trichloroethane (CAS No. 71-55-6), carbon tetrachloride (CAS No. 56-23-
5), and chloroform (CAS No. 67-66-3).
    Hoist means a mechanical device that carries the parts basket and 
the parts to be cleaned from the loading area into the solvent cleaning 
machine and to the unloading area at a controlled speed. A hoist may be 
operated by controls or may be programmed to cycle parts through the 
cleaning cycle automatically.
    Idling mode means the time period when a solvent cleaning machine 
is not actively cleaning parts and the sump heating coils, if present, 
are turned on.
    Idling-mode cover means any cover or solvent cleaning machine 
design that allows the cover to shield the cleaning machine openings 
during the idling mode. A cover that meets this definition can also be 
used as a working-mode cover if that definition is also met.
    Immersion cold cleaning machine means a cold cleaning machine in 
which the parts are immersed in the solvent when being cleaned. A 
remote reservoir cold cleaning machine that is also an immersion cold 
cleaning machine is considered an immersion cold cleaning machine for 
purposes of this subpart.
    In-line cleaning machine or continuous cleaning machine means a 
solvent cleaning machine that uses an automated parts handling system, 
typically a conveyor, to automatically provide a continuous supply of 
parts to be cleaned. These units are fully enclosed except for the 
conveyor inlet and exit portals. In-line cleaning machines can be 
either cold or vapor cleaning machines.
    Leak-proof coupling means a threaded or other type of coupling that 
prevents solvents from leaking while filling or draining solvent to and 
from the solvent cleaning machine.
    Lip exhaust means a device installed at the top of the opening of a 
solvent cleaning machine that draws in air and solvent vapor from the 
freeboard area and ducts the air and vapor away from the solvent 
cleaning area.
    Monthly reporting period means any calendar month in which the 
owner or operator of a solvent cleaning machine is required to 
calculate and report the solvent emissions from each solvent cleaning 
machine.
    New means any solvent cleaning machine the construction or 
reconstruction of which is commenced after November 29, 1993.
    Open-top vapor cleaning machine means a batch solvent cleaning 
machine that has its upper surface open to the air and boils solvent to 
create solvent vapor used to clean and/or dry parts.
    Part means any object that is cleaned in a solvent cleaning 
machine. Parts include, but are not limited to, discrete parts, 
assemblies, sets of parts, and continuous parts (i.e., continuous 
sheets of metal).
    Primary condenser means a series of circumferential cooling coils 
on a vapor cleaning machine through which a chilled substance is 
circulated or recirculated to provide continuous condensation of rising 
solvent vapors and, thereby, create a concentrated solvent vapor zone.
    Reduced room draft means decreasing the flow or movement of air 
across the top of the freeboard area of the solvent cleaning machine to 
meet the specifications of Sec. 63.463(e)(2)(ii). Methods of achieving 
a reduced room draft include, but are not limited to, redirecting fans 
and/or air vents to not blow across the cleaning machine, moving the 
cleaning machine to a corner where there is less room draft, and 
constructing a partial or complete enclosure around the cleaning 
machine.
    Remote reservoir cold cleaning machine means any device in which 
liquid solvent is pumped to a sink-like work area that drains solvent 
back into an enclosed container while parts are being cleaned, allowing 
no solvent to pool in the work area.
    Soils means contaminants that are removed from the parts being 
cleaned. Soils include, but are not limited to, grease, oils, waxes, 
metal chips, carbon deposits, fluxes, and tars.
    Solvent/air interface means, for a vapor cleaning machine, the 
location of contact between the concentrated solvent vapor layer and 
the air. This location of contact is defined as the mid-line height of 
the primary condenser coils. For a cold cleaning machine, it is the 
location of contact between the liquid solvent and the air.
    Solvent/air interface area means; for a vapor cleaning machine, the 
surface area of the solvent vapor zone that is exposed to the air; for 
an in-line cleaning machine, it is the total surface area of all the 
sumps; for a cold cleaning machine, it is the surface area of the 
liquid solvent that is exposed to the air.
    Solvent cleaning machine means any device or piece of equipment 
that uses halogenated HAP solvent liquid or vapor to remove soils from 
the surfaces of materials. Types of solvent cleaning machines include, 
but are not limited to, batch vapor, in-line vapor, in-line cold, and 
batch cold solvent cleaning machines.
    Solvent vapor zone means; for a vapor cleaning machine, the area 
that extends from the liquid solvent surface to the level that solvent 
vapor is condensed. This condensation level is defined as the midline 
height of the primary condenser coils.
    Sump means the part of a solvent cleaning machine where the liquid 
solvent is located.
    Sump heater coils means the heating system on a cleaning machine 
that uses steam, electricity, or hot water to heat or boil the liquid 
solvent.
    Superheated vapor system means a system that heats the solvent 
vapor, either passively or actively, to a temperature above the 
solvent's boiling point. Parts are held in the superheated vapor before 
exiting the machine to evaporate the liquid solvent on them. Hot vapor 
recycle is an example of a superheated vapor system.
    Vapor cleaning machine means a batch or in-line solvent cleaning 
machine that boils liquid solvent generating solvent vapor that is used 
as a part of the cleaning or drying cycle.
    Water layer means a layer of water that floats above the denser 
solvent and provides control of solvent emissions. In many cases, the 
solvent used in batch cold cleaning machines is sold containing the 
appropriate amount of water to create a water cover.
    Working mode means the time period when the solvent cleaning 
machine is actively cleaning parts. Working-mode cover means anycover 
or solvent cleaning machine design that allows the cover to shield the 
cleaning machine openings from outside air disturbances while parts are 
being cleaned in the cleaning machine. A cover that is used during the 
working mode is opened only during parts entry and removal. A cover 
that meets this definition can also be used as an idling-mode cover if 
that definition is also met.


Sec. 63.462  Batch cold cleaning machine standards.

    (a) Each owner or operator of an immersion batch cold solvent 
cleaning machine shall comply with the requirements specified in 
paragraph(a)(1) or (a)(2) of this section.
    (1) Employ a tightly fitting cover that shall be closed at all 
times except during parts entry and removal, and a water layer at a 
minimum thickness of 2.5 centimeters (1.0 inch) on the surface of the 
solvent within the cleaning machine, or
    (2) Employ a tightly fitting cover that shall be closed at all 
times except during parts entry and removal and a freeboard ratio of 
0.75 or greater.
    (b) Each owner or operator of a remote-reservoir batch cold solvent 
cleaning machine shall employ a tightly fitting cover over the solvent 
sump that shall be closed at all times except during the cleaning of 
parts.
    (c) Each owner or operator of a batch cold solvent cleaning machine 
complying with paragraphs (a)(2) or (b) of this section shall comply 
with the work and operational practice requirements specified in 
paragraphs (c)(1) through (c)(8) of this section.
    (1) All waste solvent shall be collected and stored in closed 
containers. The closed container may contain a device that allows 
pressure relief, but does not allow liquid solvent to drain from the 
container.
    (2) If a flexible hose or flushing device is used, flushing shall 
be performed only within the freeboard area of the solvent cleaning 
machine.
    (3) The owner or operator shall drain solvent cleaned parts for 15 
seconds or until dripping has stopped, whichever is longer. Parts 
having cavities or blind holes shall be tipped or rotated while 
draining.
    (4) The owner or operator shall ensure that the solvent level does 
not exceed the fill line.
    (5) Spills during solvent transfer shall be wiped up immediately. 
The wipe rags shall be stored in covered containers meeting the 
requirements of paragraph (c)(1) of this section.
    (6) When an air- or pump-agitated solvent bath is used, the owner 
or operator shall ensure that the agitator is operated to produce a 
rolling motion of the solvent but not observable splashing against tank 
walls or parts being cleaned.
    (7) The owner or operator shall ensure that, when the cover is 
open, the cold cleaning machine is not exposed to drafts greater than 
40 meters per minute (132 feet per minute), as measured between 1 and 2 
meters (3.3 and 6.6 feet) upwind and at the same elevation as the tank 
lip.
    (8) Sponges, fabric, wood, and paper products shall not be cleaned.
    (d) Each owner or operator of a batch cold cleaning machine shall 
submit an initial notification report as described in Sec. 63.468(a) 
and a compliance report as described in Sec. 63.468(b). No further 
reporting or recordkeeping is required.


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

    (a) Except as provided in Sec. 63.464, each owner or operator of a 
solvent cleaning machine subject to the provisions of this subpart 
shall ensure that each existing or new batch vapor or in-line solvent 
cleaning machine subject to the provisions of this subpart conforms to 
the design requirements specified in paragraphs (a)(1) through (a)(7) 
of this section.
    (1) Each cleaning machine shall be designed or operated to meet the 
control equipment or technique requirements in paragraph (a)(1)(i) or 
(a)(1)(ii) of this section.
    (i) An idling and downtime mode cover, as described in 
Sec. 63.463(d)(1)(i), that may be readily opened or closed, that 
completely covers the cleaning machine openings when in place, and is 
free of cracks, holes, and other defects.
    (ii) A reduced room draft as described in Sec. 63.463(e)(2)(ii).
    (2) Each cleaning machine shall have a freeboard ratio of 0.75 or 
greater.
    (3) Each cleaning machine shall have an automated parts handling 
system capable of moving parts or parts baskets at a speed of 3.4 
meters per minute (11 feet per minute) or less from the initial loading 
of parts through removal of cleaned parts.
    (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.
    (5) Each vapor cleaning machine shall be equipped with a vapor 
level control device that shuts off sump heat if the vapor level in the 
vapor cleaning machine rises above the height of the primary condenser.
    (6) Each vapor cleaning machine shall have a primary condenser.
    (7) Each cleaning machine that uses a lip exhaust shall be designed 
and operated to route all collected solvent vapors through a properly 
operated and maintained carbon adsorber that meets the requirements of 
paragraph (e)(2)(vii) of this section.
    (b) Except as provided in Sec. 63.464, each owner or operator of an 
existing or new batch vapor cleaning machine shall comply with either 
paragraph (b)(1) or (b)(2) of this section.
    (1) Each owner or operator of a batch vapor cleaning machine with a 
solvent/air interface area of 1.21 square meters (13 square feet) or 
less shall comply with the requirements specified in either paragraph 
(b)(1)(i) or (b)(1)(ii) of this section.
    (i) Employ one of the control combinations listed in table 1 of 
this subpart or other equivalent methods of control as determined using 
the procedure in Sec. 63.469, equivalent methods of control.

Table 1.--Control Combinations for Batch Vapor Solvent Cleaning Machines
With a Solvent/Air Interface Area of 1.21 Square Meters (13 Square Feet)
                                 or Less                                
------------------------------------------------------------------------
  Option                        Control combinations                    
------------------------------------------------------------------------
1.........  Working-mode cover, freeboard ratio of 1.0, superheated     
             vapor.                                                     
2.........  Freeboard refrigeration device, superheated vapor.          
3.........  Working-mode cover, freeboard refrigeration device.         
4.........  Reduced room draft, freeboard ratio of 1.0, superheated     
             vapor.                                                     
5.........  Freeboard refrigeration device, reduced room draft.         
6.........  Freeboard refrigeration device, freeboard ratio of 1.0.     
7.........  Freeboard refrigeration device, dwell.                      
8.........  Reduced room draft, dwell, freeboard ratio of 1.0.          
9.........  Freeboard refrigeration device, carbon adsorber.            
10........  Freeboard ratio of 1.0, superheated vapor, carbon adsorber. 
------------------------------------------------------------------------
Note: Unlike most of the control techniques available for complying with
  this rule, carbon adsorbers are not considered to be a pollution      
  prevention measure. Use of such units may impose additional cost and  
  burden for a number of reasons. First, carbon adsorption units are    
  generally more expensive than other controls listed in the options.   
  Second, these units may present cross-media impacts such as effluent  
  discharges if not properly operated and maintained, and spent carbon  
  beds have to be disposed of as hazardous waste. When making decisions 
  about what controls to install on halogenated solvent cleaning        
  machines to meet the requirements of this rule, all of these factors  
  should be weighed and pollution prevention measures are encouraged    
  wherever possible.                                                    

    (ii) Demonstrate that their solvent cleaning machine can achieve 
and maintain an idling emission limit of 0.22 kilograms per hour per 
square meter (0.045 pounds per hour per square foot) of solvent/air 
interface area as determined using the procedures in Sec. 63.465(a) and 
appendix A to this part.
    (2) Each owner or operator of a batch vapor cleaning machine with a 
solvent/air interface area greater than 1.21 square meters (13 square 
feet) shall comply with the requirements specified in either paragraph 
(b)(2)(i) or (b)(2)(ii) of this section.
    (i) Employ one of the control combinations listed in table 2 of 
this subpart or other equivalent methods of control as determined using 
the procedure in Sec. 63.469, equivalent methods of control.

Table 2.--Control Combinations for Batch Vapor Solvent Cleaning Machines
  With a Solvent/Air Interface Area Greater than 1.21 Square Meters (13 
                              Square Feet)                              
------------------------------------------------------------------------
  Option                        Control combinations                    
------------------------------------------------------------------------
1.........  Freeboard refrigeration device, freeboard ratio of 1.0,     
             superheated vapor.                                         
2.........  Dwell, freeboard refrigeration device, reduced room draft.  
3.........  Working-mode cover, freeboard refrigeration device,         
             superheated vapor.                                         
4.........  Freeboard ratio of 1.0, reduced room draft, superheated     
             vapor.                                                     
5.........  Freeboard refrigeration device, reduced room draft,         
             superheated vapor.                                         
6.........  Freeboard refrigeration device, reduced room draft,         
             freeboard ratio of 1.0.                                    
7.........  Freeboard refrigeration device, superheated vapor, carbon   
             adsorber.                                                  
------------------------------------------------------------------------
Note: Unlike most of the control techniques available for complying with
  this rule, carbon adsorbers are not considered to be a pollution      
  prevention measure. Use of such units may impose additional cost and  
  burden for a number of reasons. First, carbon adsorption units are    
  generally more expensive than other controls listed in the options.   
  Second, these units may present cross-media impacts such as effluent  
  discharges if not properly operated and maintained, and spent carbon  
  beds have to be disposed of as hazardous waste. When making decisions 
  about what controls to install on halogenated solvent cleaning        
  machines to meet the requirements of this rule, all of these factors  
  should be weighed and pollution prevention measures are encouraged    
  wherever possible.                                                    

    (ii) Demonstrate that their solvent cleaning machine can achieve 
and maintain an idling emission limit of 0.22 kilograms per hour per 
square meter (0.045 pounds per hour per square foot) of solvent/air 
interface area as determined using the procedures in Sec. 63.465(a) and 
appendix A of this part.
    (c) Except as provided in Sec. 63.464, each owner or operator of an 
in-line cleaning machine shall comply with paragraph (c)(1) or (c)(2) 
of this section as appropriate.
    (1) Each owner or operator of an existing in-line cleaning machine 
shall comply with the requirements specified in either paragraph 
(c)(1)(i) or (c)(1)(ii) of this section.
    (i) Employ one of the control combinations listed in table 3 of 
this subpart or other equivalent methods of control as determined using 
the procedure in Sec. 63.469, equivalent methods of control.

  Table 3.--Control Combinations for Existing In-Line Solvent Cleaning  
                                Machines                                
------------------------------------------------------------------------
  Option                        Control combinations                    
------------------------------------------------------------------------
1.........  Superheated vapor, freeboard ratio of 1.0.                  
2.........  Freeboard refrigeration device, freeboard ratio of 1.0.     
3.........  Dwell, freeboard refrigeration device.                      
4.........  Dwell, carbon adsorber.                                     
------------------------------------------------------------------------
Note: Unlike most of the control techniques available for complying with
  this rule, carbon adsorbers are not considered to be a pollution      
  prevention measure. Use of such units may impose additional cost and  
  burden for a number of reasons. First, carbon adsorption units are    
  generally more expensive than other controls listed in the options.   
  Second, these units may present cross-media impacts such as effluent  
  discharges if not properly operated and maintained, and spent carbon  
  beds have to be disposed of as hazardous waste. When making decisions 
  about what controls to install on halogenated solvent cleaning        
  machines to meet the requirements of this rule, all of these factors  
  should be weighed and pollution prevention measures are encouraged    
  wherever possible.                                                    

    (ii) Demonstrate that their solvent cleaning machine can achieve 
and maintain an idling emission limit of 0.10 kilograms per hour per 
square meter (0.021 pounds per hour per square foot) of solvent/air 
interface area as determined using the procedures in Sec. 63.465(a) and 
appendix A to this part.
    (2) Each owner or operator of a new in-line cleaning machine shall 
comply with the requirements specified in either paragraph (c)(2)(i) or 
(c)(2)(ii) of this section.
    (i) Employ one of the control combinations listed in table 4 of 
this subpart or other equivalent methods of control as determined using 
the procedure in Sec. 63.469, equivalent methods of control section.

Table 4.--Control Combinations for New In-Line Solvent Cleaning Machines
------------------------------------------------------------------------
  Option                        Control combinations                    
------------------------------------------------------------------------
1.........  Superheated vapor, freeboard refrigeration device.          
2.........  Freeboard refrigeration device, carbon adsorber.            
3.........  Superheated vapor, carbon adsorber.                         
------------------------------------------------------------------------
Note: Unlike most of the control techniques available for complying with
  this rule, carbon adsorbers are not considered to be a pollution      
  prevention measure. Use of such units may impose additional cost and  
  burden for a number of reasons. First, carbon adsorption units are    
  generally more expensive than other controls listed in the options.   
  Second, these units may present cross-media impacts such as effluent  
  discharges if not properly operated and maintained, and spent carbon  
  beds have to be disposed of as hazardous waste. When making decisions 
  about what controls to install on halogenated solvent cleaning        
  machines to meet the requirements of this rule, all of these factors  
  should be weighed and pollution prevention measures are encouraged    
  wherever possible.                                                    

    (ii) Demonstrate that their solvent cleaning machine can achieve 
and maintain an idling emission limit of 0.10 kilograms per hour per 
square meter (0.021 pounds per hour per square foot) of solvent/air 
interface area as determined using the procedures in Sec. 63.465(a) and 
appendix A to this part.
    (d) Except as provided in Sec. 63.464, each owner or operator of an 
existing or new batch vapor or in-line solvent cleaning machine shall 
meet all of the following required work and operational practices 
specified in paragraph (d)(1) through (d)(12) of this section as 
applicable.
    (1) Control air disturbances across the cleaning machine opening(s) 
by incorporating the control equipment or techniques in paragraph 
(d)(1)(i) or (d)(1)(ii) of this section.
    (i) Cover(s) to each solvent cleaning machine shall be in place 
during the idling mode, and during the downtime mode unless either the 
solvent has been removed from the machine or maintenance or monitoring 
is being performed that requires the cover(s) to not be in place.
    (ii) A reduced room draft as described in Sec. 63.463(e)(2)(ii).
    (2) The parts baskets or the parts being cleaned in an open-top 
batch vapor cleaning machine shall not occupy more than 50 percent of 
the solvent/air interface area unless the parts baskets or parts are 
introduced at a speed of 0.9 meters per minute (3 feet per minute) or 
less.
    (3) Any spraying operations shall be done within the vapor zone or 
within a section of the solvent cleaning machine that is not directly 
exposed to the ambient air (i.e., a baffled or enclosed area of the 
solvent cleaning machine).
    (4) Parts shall be oriented so that the solvent drains from them 
freely. Parts having cavities or blind holes shall be tipped or rotated 
before being removed from any solvent cleaning machine unless an 
equally effective approach has been approved by the Administrator.
    (5) Parts baskets or parts shall not be removed from any solvent 
cleaning machine until dripping has stopped.
    (6) During startup of each vapor cleaning machine, the primary 
condenser shall be turned on before the sump heater.
    (7) During shutdown of each vapor cleaning machine, the sump heater 
shall be turned off and the solvent vapor layer allowed to collapse 
before the primary condenser is turned off.
    (8) When solvent is added or drained from any solvent cleaning 
machine, the solvent shall be transferred using threaded or other 
leakproof couplings and the end of the pipe in the solvent sump shall 
be located beneath the liquid solvent surface.
    (9) Each solvent cleaning machine and associated controls shall be 
maintained as recommended by the manufacturers of the equipment or 
using alternative maintenance practices that have been demonstrated to 
the Administrator's satisfaction to achieve the same or better results 
as those recommended by the manufacturer.
    (10) Each operator of a solvent cleaning machine shall complete and 
pass the applicable sections of the test of solvent cleaning operating 
procedures in appendix B to this part if requested during an inspection 
by the Administrator.
    (11) Waste solvent, still bottoms, and sump bottoms shall be 
collected and stored in closed containers. The closed containers may 
contain a device that would allow pressure relief, but would not allow 
liquid solvent to drain from the container.
    (12) Sponges, fabric, wood, and paper products shall not be 
cleaned.
    (e) Each owner or operator of a solvent cleaning machine complying 
with either paragraph (b) or (c) of this section shall comply with the 
requirements specified in paragraphs (e)(1) through (e)(4) of this 
section.
    (1) Conduct monitoring of each control device used to comply with 
Sec. 63.463 of this subpart as provided in Sec. 63.466.
    (2) Determine during each monitoring period whether each control 
device used to comply with these standards meets the requirements 
specified in paragraphs (e)(2)(i) through (e)(2)(vii) of this section.
    (i) If a freeboard refrigeration device is used to comply with 
these standards, the owner or operator shall ensure that the chilled 
air blanket temperature (in  deg.F or  deg.C), measured at the center 
of the air blanket, is no greater than 30 percent of the solvent's 
boiling point.
    (ii) If a reduced room draft is used to comply with these 
standards, the owner or operator shall comply with the requirements 
specified in paragraphs (e)(2)(ii)(A) and (e)(2)(ii)(B) of this 
section.
    (A) Ensure that the flow or movement of air across the top of the 
freeboard area of the solvent cleaning machine or within the solvent 
cleaning machine enclosure does not exceed 15.2 meters per minute (50 
feet per minute) at any time as measured using the procedures in 
Sec. 63.466(d).
    (B) Establish and maintain the operating conditions under which the 
wind speed was demonstrated to be 15.2 meters per minute (50 feet per 
minute) or less as described in Sec. 63.466(d).
    (iii) If a working-mode cover is used to comply with these 
standards, the owner or operator shall comply with the requirements 
specified in paragraphs (e)(2)(iii)(A) and (e)(2)(iii)(B) of this 
section.
    (A) Ensure that the cover opens only for part entrance and removal 
and completely covers the cleaning machine openings when closed.
    (B) Ensure that the working-mode cover is maintained free of 
cracks, holes, and other defects.
    (iv) If an idling-mode cover is used to comply with these 
standards, the owner or operator shall comply with the requirements 
specified in paragraphs (e)(2)(iv)(A) and (e)(2)(iv)(B) of this 
section.
    (A) Ensure that the cover is in place whenever parts are not in the 
solvent cleaning machine and completely covers the cleaning machine 
openings when in place.
    (B) Ensure that the idling-mode cover is maintained free of cracks, 
holes, and other defects.
    (v) If a dwell is used to comply with these standards, the owner or 
operator shall comply with the requirements specified in paragraphs 
(e)(2)(v)(A) and (e)(2)(v)(B) of this section.
    (A) Determine the appropriate dwell time for each type of part or 
parts basket, or determine the maximum dwell time using the most 
complex part type or parts basket, as described in Sec. 63.465(d).
    (B) Ensure that, after cleaning, each part is held in the solvent 
cleaning machine freeboard area above the vapor zone for the dwell time 
determined for that particular part or parts basket, or for the maximum 
dwell time determined using the most complex part type or parts basket.
    (vi) If a superheated vapor system is used to comply with these 
standards, the owner or operator shall comply with the requirements 
specified in paragraphs (e)(2)(vi)(A) through (e)(2)(vi)(C) of this 
section.
    (A) Ensure that the temperature of the solvent vapor at the center 
of the superheated vapor zone is at least 10 deg.F above the solvent's 
boiling point.
    (B) Ensure that the manufacturer's specifications for determining 
the minimum proper dwell time within the superheated vapor system is 
followed.
    (C) Ensure that parts remain within the superheated vapor for at 
least the minimum proper dwell time.
    (vii) If a carbon adsorber in conjunction with a lip exhaust is 
used to comply with these standards, the owner or operator shall comply 
with the requirements specified in paragraphs (e)(2)(vii)(A) through 
(e)(2)(vii)(C) of this section.
    (A) Ensure that the concentration of organic solvent in the exhaust 
from this device does not exceed 100 parts per million of any 
halogenated HAP compound as measured using the procedure in 
Sec. 63.466(e). If the halogenated HAP solvent concentration in the 
carbon adsorber exhaust exceeds 100 parts per million, the owner or 
operator shall adjust the desorption schedule or replace the disposable 
canister, if not a regenerative system, so that the exhaust 
concentration of halogenated HAP solvent is brought below 100 parts per 
million.
    (B) Ensure that the carbon adsorber bed is not bypassed during 
desorption.
    (C) Ensure that the lip exhaust is located above the solvent 
cleaning machine cover so that the cover closes below the lip exhaust 
level.
    (3) If any of the requirements of paragraph (e)(2) of this section 
are not met, determine whether an exceedance has occurred using the 
criteria in paragraphs (e)(3)(i) and (e)(3)(ii) of this section.
    (i) An exceedance has occurred if the requirements of paragraphs 
(e)(2)(ii)(B), (e)(2)(iii)(A), (e)(2)(iv)(A), (e)(2)(v), (e)(2)(vi)(B), 
(e)(2)(vi)(C), (e)(2)(vii)(B), or (e)(2)(vii)(C) of this section have 
not been met.
    (ii) An exceedance has occurred if the requirements of paragraphs 
(e)(2)(i), (e)(2)(ii)(A), (e)(2)(iii)(B), (e)(2)(iv)(B), (e)(2)(vi)(A), 
or (e)(2)(vii)(A) of this section have not been met and are not 
corrected within 15 days of detection. Adjustments or repairs shall be 
made to the solvent cleaning system or control device to reestablish 
required levels. The parameter must be remeasured immediately upon 
adjustment or repair and demonstrated to be within required limits.
    (4) The owner or operator shall report all exceedances and all 
corrections and adjustments made to avoid an exceedance as specified in 
Sec. 63.468(h).
    (f) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the idling emission limit standards in 
paragraphs (b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) of this 
section shall comply with the requirements specified in paragraphs 
(f)(1) through (f)(5) of this section.
    (1) Conduct an initial performance test to comply with the 
requirements specified in paragraphs (f)(1)(i) and (f)(1)(ii) of this 
section.
    (i) Demonstrate compliance with the applicable idling emission 
limit.
    (ii) Establish parameters that will be monitored to demonstrate 
compliance. If a control device is used that is listed in paragraph 
(e)(2) of this section, then the requirements for that control device 
as listed in paragraph (e)(2) of this section shall be used unless the 
owner or operator can demonstrate to the Administrator's satisfaction 
that an alternative strategy is equally effective.
    (2) Conduct the periodic monitoring of the parameters used to 
demonstrate compliance as described in Sec. 63.466(f).
    (3) Operate the solvent cleaning machine within parameters 
identified in the initial performance test.
    (4) If any of the requirements in paragraphs (f)(1) through (f)(3) 
of this section are not met, determine whether an exceedance has 
occurred using the criteria in paragraphs (f)(4)(i) and (f)(4)(ii) of 
this section.
    (i) If using a control listed in paragraph (e) of this section, the 
owner or operator shall comply with the appropriate parameter values in 
paragraph (e)(2) and the exceedance delineations in paragraphs 
(e)(3)(i) and (e)(3)(ii) of this section.
    (ii) If using a control not listed in paragraph (e) of this 
section, the owner or operator shall indicate whether the exceedance of 
the parameters that are monitored to determine the proper functioning 
of this control would be classified as an immediate exceedance or 
whether a 15 day repair period would be allowed. This information must 
be submitted to the Administrator for approval.
    (5) The owner or operator shall report all exceedances and all 
corrections and adjustments made to avoid an exceedance as specified in 
Sec. 63.468(h).


Sec. 63.464  Alternative standards.

    (a) As an alternative to meeting the requirements in Sec. 63.463, 
each owner or operator of a batch vapor or in-line solvent cleaning 
machine can elect to comply with the requirements of Sec. 63.464. An 
owner or operator of a solvent cleaning machine who elects to comply 
with Sec. 63.464 shall comply with the requirements specified in either 
paragraph (a)(1) or (a)(2) of this section.
    (1) If the cleaning machine has a solvent/air interface, as defined 
in Sec. 63.461, the owner or operator shall comply with the 
requirements specified in paragraphs (a)(1)(i) and (a)(1)(ii) of this 
section.
    (i) Maintain a log of solvent additions and deletions for each 
solvent cleaning machine.
    (ii) Ensure that the emissions from each solvent cleaning machine 
are equal to or less than the applicable emission limit presented in 
table 5 of this subpart as determined using the procedures in 
Sec. 63.465(b) and (c).

 Table 5.--Emission Limits for Batch Vapor and In-Line Solvent Cleaning 
                  Machines With a Solvent/Air Interface                 
------------------------------------------------------------------------
                                                               3-month  
                                                               rolling  
                                                               average  
                                                               monthly  
                                                               emission 
                  Solvent cleaning machine                      limit   
                                                             (kilograms/
                                                                square  
                                                               meters/  
                                                                month)  
------------------------------------------------------------------------
Batch vapor solvent cleaning machines......................         150 
Existing in-line solvent cleaning machines.................         153 
New in-line solvent cleaning machines......................          99 
------------------------------------------------------------------------

    (2) If the cleaning machine is a batch vapor cleaning machine and 
does not have a solvent/air interface, the owner or operator shall 
comply with the requirements specified in paragraphs (a)(2)(i) and 
(a)(2)(ii) of this section.
    (i) Maintain a log of solvent additions and deletions for each 
solvent cleaning machine.
    (ii) Ensure that the emissions from each solvent cleaning machine 
are equal to or less than the appropriate limits as described in 
paragraphs (a)(2)(ii)(A) and (a)(2)(ii)(B) of this section.
    (A) For cleaning machines with a cleaning capacity, as reported in 
Sec. 63.468(d), that is less than or equal to 2.95 cubic meters, the 
emission limit shall be determined using table 6 or equation 1. If 
using table 6, and the cleaning capacity of the cleaning machine falls 
between two cleaning capacity sizes, then the lower of the two emission 
limits applies.
    (B) For cleaning machines with a cleaning capacity as reported in 
Sec. 63.468(d), that is greater than 2.95 cubic meters, the emission 
limit shall be determined using equation 1.
EL = 330 * (Vol)0.6    (1)
where:

EL = the 3-month rolling average monthly emission limit (kilograms/
month).

  Table 6.--Emission Limits for Cleaning Machines Without a Solvent/Air 
                                Interface                               
------------------------------------------------------------------------
                                       3-month rolling average monthly  
 Cleaning capacity (cubic meters)     emission limit (kilograms/month)  
------------------------------------------------------------------------
0.00..............................                        0             
0.05..............................                       55             
0.10..............................                       83             
0.15..............................                      106             
0.20..............................                      126             
0.25..............................                      144             
0.30..............................                      160             
0.35..............................                      176             
0.40..............................                      190             
0.45..............................                      204             
0.50..............................                      218             
0.55..............................                      231             
0.60..............................                      243             
0.65..............................                      255             
0.70..............................                      266             
0.75..............................                      278             
0.80..............................                      289             
0.85..............................                      299             
0.90..............................                      310             
0.95..............................                      320             
1.00..............................                      330             
1.05..............................                      340             
1.10..............................                      349             
1.15..............................                      359             
1.20..............................                      368             
1.25..............................                      377             
1.30..............................                      386             
1.35..............................                      395             
1.40..............................                      404             
1.45..............................                      412             
1.50..............................                      421             
1.55..............................                      429             
1.60..............................                      438             
1.65..............................                      446             
1.70..............................                      454             
1.75..............................                      462             
1.80..............................                      470             
1.85..............................                      477             
1.90..............................                      485             
1.95..............................                      493             
2.00..............................                      500             
2.05..............................                      508             
2.10..............................                      515             
2.15..............................                      522             
2.20..............................                      530             
2.25..............................                      537             
2.30..............................                      544             
2.35..............................                      551             
2.40..............................                      558             
2.45..............................                      565             
2.50..............................                      572             
2.55..............................                      579             
2.60..............................                      585             
2.65..............................                      592             
2.70..............................                      599             
2.75..............................                      605             
2.80..............................                      612             
2.85..............................                      619             
2.90..............................                      625             
2.95..............................                      632             
------------------------------------------------------------------------

Vol = the cleaning capacity of the solvent cleaning machine (cubic 
meters).

    (b) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with Sec. 63.464(a) shall demonstrate 
compliance with the applicable 3-month rolling average monthly emission 
limit on a monthly basis as described in Sec. 63.465(b) and (c).
    (c) If the applicable 3-month rolling average emission limit is not 
met, an exceedance has occurred. All exceedances shall be reported as 
required in Sec. 63.468(h).


Sec. 63.465  Test methods.

    (a) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with an idling emission limit standard in 
Sec. 63.463(b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) shall 
determine the idling emission rate of the solvent cleaning machine 
using Reference Method 307 in appendix A to this part.
    (b) 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 Sec. 63.465(c). 
The solvent cleaning machine does not have to be emptied and filled 
with fresh unused solvent prior to the calculations.
    (c) 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 the month comply with the requirements specified in 
paragraphs (c)(1) through (c)(3) of this section.
    (1) Using the records of all solvent additions and deletions for 
the previous monthly reporting period required under Sec. 63.464(a), 
determine solvent emissions (Ei) using equation 2 for cleaning machines 
with a solvent/air interface and equation 3 for cleaning machines 
without a solvent/air interface:

TR02DE94.000


TR02DE94.001

where:

Ei=the total halogenated HAP solvent emissions from the solvent 
cleaning machine during the most recent monthly reporting period i, 
(kilograms of solvent per square meter of solvent/air interface area 
per month).
En=the total halogenated HAP solvent emissions from the solvent 
cleaning machine 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 machine during the most recent monthly reporting 
period i, (kilograms of solvent per month).
LSRi=the total amount of halogenated HAP liquid solvent removed 
from the solvent cleaning machine 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 machine 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).
AREAi=the solvent/air interface area of the solvent cleaning 
machine (square meters).

    (2) Determine SSRi using the method specified in paragraph 
(c)(2)(i) or (c)(2)(ii) of this section.
    (i) From tests conducted using EPA reference method 25d.
    (ii) By engineering calculations included in the compliance report.
    (3) Determine the monthly rolling average, EA, for the 3-month 
period ending with the most recent reporting period using equation 4 
for cleaning machines with a solvent/air interface or equation 5 for 
cleaning machines without a solvent/air interface:

TR02DE94.002

      

TR02DE94.003

Where:

EAi=the average halogenated HAP solvent emissions over the 
preceding 3 monthly reporting periods, (kilograms of solvent per square 
meter of solvent/air interface area per month).
EAn=the average halogenated HAP solvent emissions over the 
preceding 3 monthly reporting periods (kilograms of solvent per month).
Ei=halogenated HAP solvent emissions for each month (j) for the 
most recent 3 monthly reporting periods (kilograms of solvent per 
square meter of solvent/air interface area).
En=halogenated HAP solvent emissions for each month (j) for the 
most recent 3 monthly reporting periods (kilograms of solvent per 
month).
j=1 = the most recent monthly reporting period.
j=2 = the monthly reporting period immediately prior to j=1.
j=3 = the monthly reporting period immediately prior to j=2.

    (d) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine using a dwell to comply with Sec. 63.463 shall 
determine the appropriate dwell time for each part or parts basket 
using the procedure specified in paragraphs (d)(1) and (d)(2) of this 
section.
    (1) Determine the amount of time for the part or parts basket to 
cease dripping once placed in the vapor zone. The part or parts basket 
used for this determination must be at room temperature before being 
placed in the vapor zone.
    (2) The proper dwell time for parts to remain in the freeboard area 
above the vapor zone is no less than 35 percent of the time determined 
in paragraph (d)(1) of this section.
    (e) An owner or operator of a source shall determine their 
potential to emit from all solvent cleaning operations, using the 
procedures described in paragraphs (e)(1) through (e)(3) of this 
section. A facility's total potential to emit is the sum of the HAP 
emissions from all solvent cleaning operations, plus all HAP emissions 
from other sources within the facility.
    (1) Determine the potential to emit for each individual solvent 
cleaning using equation 6.

PTEi=Hi x Wi x SAIi (6)
Where:

PTEi=the potential to emit for solvent cleaning machine i 
(kilograms of solvent per year).
Hi=hours of operation for solvent cleaning machine i (hours per 
year).
    =8760 hours per year, unless otherwise restricted by a Federally 
enforceable requirement.
Wi=the working mode uncontrolled emission rate (kilograms per 
square meter per hour).
    =1.95 kilograms per square meter per hour for batch vapor and cold 
cleaning machines.
    =1.12 kilograms per square meter per hour for in-line cleaning 
machines.
SAIi = solvent/air interface area of solvent cleaning machine i 
(square meters). Section 63.461 defines the solvent/air interface area 
for those machines that have a solvent/air interface. Cleaning machines 
that do not have a solvent/air interface shall calculate a solvent/air 
interface area using the procedure in paragraph (e)(2) of this section.

    (2) Cleaning machines that do not have a solvent/air interface 
shall calculate a solvent/air interface area using equation 7.

SAI=2.20 * (Vol)0.6    (7)
Where:

SAI=the solvent/air interface area (square meters).
Vol=the cleaning capacity of the solvent cleaning machine (cubic 
meters).

    (3) Sum the PTEi for all solvent cleaning operations to obtain 
the total potential to emit for solvent cleaning operations at the 
facility.


Sec. 63.466  Monitoring procedures.

    (a) Except as provided in paragraph (g) of this section, each owner 
or operator of a batch vapor or in-line solvent cleaning machine 
complying with the equipment standards in Sec. 63.463 (b)(1)(i), 
(b)(2)(i), (c)(1)(i), or (c)(2)(i) shall conduct monitoring and record 
the results on a weekly basis for the control devices, as appropriate, 
specified in paragraphs (a)(1) and (a)(2) of this section.
    (1) If a freeboard refrigeration device is used to comply with 
these standards, the owner or operator shall use a thermometer or 
thermocouple to measure the temperature at the center of the air 
blanket during the idling mode.
    (2) If a superheated vapor system is used to comply with these 
standards, the owner or operator shall use a thermometer or 
thermocouple to measure the temperature at the center of the 
superheated solvent vapor zone while the solvent cleaning machine is in 
the idling mode.
    (b) Except as provided in paragraph (g) of this section, each owner 
or operator of a batch vapor or in-line solvent cleaning machine 
complying with the equipment standards of Sec. 63.463 (b)(1)(i), 
(b)(2)(i), (c)(1)(i), or (c)(2)(i) shall conduct monitoring and record 
the results on a monthly basis for the control devices, as appropriate, 
specified in paragraphs (b)(1) and (b)(2) of this section.
    (1) If a cover (working-mode, downtime-mode, and/or idling-mode 
cover) is used to comply with these standards, the owner or operator 
shall conduct a visual inspection to determine if the cover is opening 
and closing properly, completely covers the cleaning machine openings 
when closed, and is free of cracks, holes, and other defects.
    (2) If a dwell is used, the owner or operator shall determine the 
actual dwell time by measuring the period of time that parts are held 
within the freeboard area of the solvent cleaning machine after 
cleaning.
    (c) Except as provided in paragraph (g) of this section, each owner 
or operator of a batch vapor or in-line solvent cleaning machine 
complying with the equipment or idling standards in Sec. 63.463 shall 
monitor the hoist speed as described in paragraphs (c)(1) through 
(c)(4) of this section.
    (1) The owner or operator shall determine the hoist speed by 
measuring the time it takes for the hoist to travel a measured 
distance. The speed is equal to the distance in meters divided by the 
time in minutes (meters per minute).
    (2) The monitoring shall be conducted monthly. If after the first 
year, no exceedances of the hoist speed are measured, the owner or 
operator may begin monitoring the hoist speed quarterly.
    (3) If an exceedance of the hoist speed occurs during quarterly 
monitoring, the monitoring frequency returns to monthly until another 
year of compliance without an exceedance is demonstrated.
    (4) If an owner or operator can demonstrate to the Administrator's 
satisfaction in the initial compliance report that the hoist cannot 
exceed a speed of 3.4 meters per minute (11 feet per minute), the 
required monitoring frequency is quarterly, including during the first 
year of compliance.
    (d) Except as provided in paragraph (g) of this section, each owner 
or operator of a batch vapor or in-line solvent cleaning machine 
complying with the equipment standards in Sec. 63.463 (b)(1)(i), 
(b)(2)(i), (c)(1)(i), or (c)(2)(i) using a reduced room draft shall 
conduct monitoring and record the results as specified in 
paragraph(d)(1) or (d)(2) of this section.
    (1) If the reduced room draft is maintained by controlling room 
parameters (i.e., redirecting fans, closing doors and windows, etc.), 
the owner or operator shall conduct an initial monitoring test of the 
windspeed and of room parameters, quarterly monitoring of windspeed, 
and weekly monitoring of room parameters as specified in paragraphs 
(d)(1)(i) and (d)(1)(ii) of this section.
    (i) Measure the windspeed within 6 inches above the top of the 
freeboard area of the solvent cleaning machine using the procedure 
specified in paragraphs (d)(1)(i)(A) through (d)(1)(i)(D) of this 
section.
    (A) Determine the direction of the wind current by slowly rotating 
a velometer or similar device until the maximum speed is located.
    (B) Orient a velometer in the direction of the wind current at each 
of the four corners of the machine.
    (C) Record the reading for each corner.
    (D) Average the values obtained at each corner and record the 
average wind speed.
    (ii) Monitor on a weekly basis the room parameters established 
during the initial compliance test that are used to achieve the reduced 
room draft.
    (2) If an enclosure (full or partial) is used to achieve a reduced 
room draft, the owner or operator shall conduct an initial monitoring 
test and, thereafter, monthly monitoring tests of the windspeed within 
the enclosure using the procedure specified in paragraphs (d)(2)(i) and 
(d)(2)(ii) of this section and a monthly visual inspection of the 
enclosure to determine if it is free of cracks, holes and other 
defects.
    (i) Determine the direction of the wind current in the enclosure by 
slowly rotating a velometer inside the entrance to the enclosure until 
the maximum speed is located.
    (ii) Record the maximum wind speed.
    (e) Except as provided in paragraph (g) of this section, each owner 
or operator using a carbon adsorber to comply with this subpart shall 
measure and record the concentration of halogenated HAP solvent in the 
exhaust of the carbon adsorber weekly with a colorimetric detector 
tube. This test shall be conducted while the solvent cleaning machine 
is in the working mode and is venting to the carbon adsorber. The 
exhaust concentration shall be determined using the procedure specified 
in paragraphs (e)(1) through (e)(3) of this section.
    (1) Use a colorimetric detector tube designed to measure a 
concentration of 100 parts per million by volume of solvent in air to 
an accuracy of  25 parts per million by volume.
    (2) Use the colorimetric detector tube according to the 
manufacturer's instructions.
    (3) Provide a sampling port for monitoring within the exhaust 
outlet of the carbon adsorber that is easily accessible and located at 
least 8 stack or duct diameters downstream from any flow disturbance 
such as a bend, expansion, contraction, or outlet; downstream from no 
other inlet; and 2 stack or duct diameters upstream from any flow 
disturbance such as a bend, expansion, contraction, inlet or outlet.
    (f) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the idling emission limit standards of 
Sec. 63.463 (b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) shall 
comply with the requirements specified in paragraphs (f)(1) and (f)(2) 
of this section.
    (1) If using controls listed in paragraphs (a) through (e) of this 
section, the owner or operator shall comply with the monitoring 
frequency requirements in paragraphs (a) through (e) of this section.
    (2) If using controls not listed in paragraphs (a) through (e) of 
this section, the owner or operator shall establish the monitoring 
frequency for each control and submit it to the Administrator for 
approval in the initial test report.
    (g) Each owner or operator using a control device listed in 
paragraphs (a) through (e) of this section can use alternative 
monitoring procedures approved by the Administrator.


Sec. 63.467  Recordkeeping requirements.

    (a) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the provisions of Sec. 63.463 shall 
maintain records in written or electronic form specified in paragraphs 
(a)(1) through (a)(5) of this section for the lifetime of the machine.
    (1) Owner's manuals, or if not available, written maintenance and 
operating procedures, for the solvent cleaning machine and control 
equipment.
    (2) The date of installation for the solvent cleaning machine and 
all of its control devices. If the exact date for installation is not 
known, a letter certifying that the cleaning machine and its control 
devices were installed prior to, or on, November 29, 1993, or after 
November 29, 1993, may be substituted.
    (3) If a dwell is used to comply with these standards, records of 
the tests required in Sec. 63.465(d) to determine an appropriate dwell 
time for each part or parts basket.
    (4) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the idling emission limit standards of 
Sec. 63.463(b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) shall 
maintain records of the initial performance test, including the idling 
emission rate and values of the monitoring parameters measured during 
the test.
    (5) Records of the halogenated HAP solvent content for each solvent 
used in a solvent cleaning machine subject to the provisions of this 
subpart.
    (b) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with Sec. 63.463 shall maintain records 
specified in paragraphs (b)(1) through (b)(4) of this section either in 
electronic or written form for a period of 5 years.
    (1) The results of control device monitoring required under 
Sec. 63.466.
    (2) Information on the actions taken to comply with Sec. 63.463(e) 
and (f). This information shall include records of written or verbal 
orders for replacement parts, a description of the repairs made, and 
additional monitoring conducted to demonstrate that monitored 
parameters have returned to accepted levels.
    (3) Estimates of annual solvent consumption for each solvent 
cleaning machine.
    (4) If a carbon adsorber is used to comply with these standards, 
records of the date and results of the weekly measurement of the 
halogenated HAP solvent concentration in the carbon adsorber exhaust 
required in Sec. 63.466(e).
    (c) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the provisions of Sec. 63.464 shall 
maintain records specified in paragraphs (c)(1) through (c)(3) of this 
section either in electronic or written form for a period of 5 years.
    (1) The dates and amounts of solvent that are added to the solvent 
cleaning machine.
    (2) The solvent composition of wastes removed from cleaning 
machines as determined using the procedure described in 
Sec. 63.465(c)(2).
    (3) Calculation sheets showing how monthly emissions and the 
rolling 3-month average emissions from the solvent cleaning machine 
were determined, and the results of all calculations.
    (d) Each owner or operator of a solvent cleaning machine without a 
solvent/air interface complying with the provisions of Sec. 63.464 
shall maintain records on the method used to determine the cleaning 
capacity of the cleaning machine.


Sec. 63.468  Reporting requirements.

    (a) Each owner or operator of an existing solvent cleaning machine 
subject to the provisions of this subpart shall submit an initial 
notification report to the Administrator no later than August 29, 1995. 
This report shall include the information specified in paragraphs 
(a)(1) through (a)(6) of this section.
    (1) The name and address of the owner or operator.
    (2) The address (i.e., physical location) of the solvent cleaning 
machine(s).
    (3) A brief description of each solvent cleaning machine including 
machine type (batch vapor, batch cold, vapor in-line or cold in-line), 
solvent/air interface area, and existing controls.
    (4) The date of installation for each solvent cleaning machine or a 
letter certifying that the solvent cleaning machine and its control 
devices were installed prior to, or after, November 29, 1993.
    (5) The anticipated compliance approach for each solvent cleaning 
machine.
    (6) An estimate of annual halogenated HAP solvent consumption for 
each solvent cleaning machine.
    (b) Each owner or operator of a new solvent cleaning machine 
subject to the provisions of this subpart shall submit an initial 
notification report to the Administrator. New sources for which 
construction or reconstruction had commenced and initial startup had 
not occurred before December 2, 1994, shall submit this report as soon 
as practicable before startup but no later than January 31, 1995. New 
sources for which the construction or reconstruction commenced after 
December 2, 1994, shall submit this report as soon as practicable 
before the construction or reconstruction is planned to commence. This 
report shall include all of the information required in Sec. 63.5(d)(1) 
of subpart A (General Provisions), with the revisions and additions in 
paragraphs (b)(1) through (b)(3) of this section.
    (1) The report shall include a brief description of each solvent 
cleaning machine including machine type (batch vapor, batch cold, vapor 
in-line, or cold-line), solvent/air interface area, and existing 
controls.
    (2) The report shall include the anticipated compliance approach 
for each solvent cleaning machine.
    (3) In lieu of Sec. 63.5(d)(1)(ii)(H) of subpart A of this part, 
the owner or operator must report an estimate of annual halogenated HAP 
solvent consumption for each solvent cleaning machine.
    (c) Each owner or operator of a batch cold solvent cleaning machine 
subject to the provisions of this subpart shall submit a compliance 
report to the Administrator. For existing sources, this report shall be 
submitted to the Administrator no later than 150 days after the 
compliance date specified in Sec. 63.460(d). For new sources, this 
report shall be submitted to the Administrator no later than 150 days 
after startup or May 1, 1995, whichever is later. This report shall 
include the requirements specified in paragraphs (c)(1) through (c)(4) 
of this section.
    (1) The name and address of the owner or operator.
    (2) The address (i.e., physical location) of the solvent cleaning 
machine(s).
    (3) A statement, signed by the owner or operator of the solvent 
cleaning machine, stating that the solvent cleaning machine for which 
the report is being submitted is in compliance with the provisions of 
this subpart.
    (4) The compliance approach for each solvent cleaning machine.
    (d) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the provisions of Sec. 63.463 shall 
submit to the Administrator an initial statement of compliance for each 
solvent cleaning machine. For existing sources, this report shall be 
submitted to the Administrator no later than 150 days after the 
compliance date specified in Sec. 63.460(d). For new sources, this 
report shall be submitted to the Administrator no later than 150 days 
after startup or May 1, 1995, whichever is later. This statement shall 
include the requirements specified in paragraphs (d)(1) through (d)(6) 
of this section.
    (1) The name and address of the owner or operator.
    (2) The address (i.e., physical location) of the solvent cleaning 
machine(s).
    (3) A list of the control equipment used to achieve compliance for 
each solvent cleaning machine.
    (4) For each piece of control equipment required to be monitored, a 
list of the parameters that are monitored and the values of these 
parameters measured on or during the first month after the compliance 
date.
    (5) Conditions to maintain the wind speed requirements of 
Sec. 63.463(e)(2)(ii), if applicable.
    (6) Each owner or operator of a solvent cleaning machine complying 
with the idling emission limit standards of Sec. 63.463(b)(1)(ii), 
(b)(2)(ii), (c)(1)(ii), and (c)(2)(ii) shall submit a test report for 
tests of idling emissions meeting the specifications in Method 307 of 
appendix A to this subpart. This report shall comply with the 
requirements specified in paragraphs (d)(6)(i) through (d)(6)(iv) of 
this section.
    (i) This test must be on the same specific model cleaner used at 
the source. The test can be done by the owner or operator of the 
affected machine or can be supplied by the vendor of that solvent 
cleaning machine or a third party.
    (ii) This report must clearly state the monitoring parameters, 
monitoring frequency and the delineation of exceedances for each 
parameter.
    (iii) If a solvent cleaning machine vendor or third party test 
report is used to demonstrate compliance, it shall include the 
following for the solvent cleaning machine tested: Name of person(s) or 
company that performed the test, model name, the date the solvent 
cleaning machine was tested, serial number, and a diagram of the 
solvent cleaning machine tested.
    (iv) If a solvent cleaning machine vendor or third party test 
report is used, the owner or operator of the solvent cleaning machine 
shall comply with the requirements specified in either paragraphs 
(d)(6)(iv)(A) and (d)(6)(iv)(B) of this section.
    (A) Submit a statement by the solvent cleaning machine vendor that 
the unit tested is the same as the unit the report is being submitted 
for.
    (B) Demonstrate to the Administrator's satisfaction that the 
solvent emissions from the solvent cleaning machine for which the test 
report is being submitted are equal to or less than the solvent 
emissions from the solvent cleaning machine in the vendor test report.
    (7) If a carbon adsorber is used to comply with these standards, 
the date and results of the weekly measurement of the halogenated HAP 
solvent concentration in the carbon adsorber exhaust required in 
Sec. 63.466(e).
    (e) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the provisions of Sec. 63.464 shall 
submit to the Administrator an initial statement of compliance for each 
solvent cleaning machine. For existing sources, this report shall be 
submitted to the Administrator no later than 150 days after the 
compliance date specified in Sec. 63.460(d). For new sources, this 
report shall be submitted to the Administrator no later than 150 days 
after startup or May 1, 1995, whichever is later. The statement shall 
include the information specified in paragraphs (e)(1) through (e)(4) 
of this section.
    (1) The name and address of the solvent cleaning machine owner or 
operator.
    (2) The address of the solvent cleaning machine(s).
    (3) The solvent/air interface area for each solvent cleaning 
machine or, for cleaning machines without a solvent/air interface, a 
description of the method used to determine the cleaning capacity and 
the results.
    (4) The results of the first 3-month average emissions calculation.
    (f) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the provisions of Sec. 63.463 shall 
submit an annual report by February 1 of the year following the one for 
which the reporting is being made. This report shall include the 
requirements specified in paragraphs (f)(1) through (f)(3) of this 
section.
    (1) A signed statement from the facility owner or his designee 
stating that, ``All operators of solvent cleaning machines have 
received training on the proper operation of solvent cleaning machines 
and their control devices sufficient to pass the test required in 
Sec. 63.463(d)(10).''
    (2) An estimate of solvent consumption for each solvent cleaning 
machine during the reporting period.
    (3) The reports required under paragraphs (f) and (g) of this 
section can be combined into a single report for each facility.
    (g) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine complying with the provisions of Sec. 63.464 shall 
submit a solvent emission report every year. This solvent emission 
report shall contain the requirements specified in paragraphs (g)(1) 
through (g)(4) of this section.
    (1) The size and type of each unit subject to this subpart 
(solvent/air interface area or cleaning capacity).
    (2) The average monthly solvent consumption for the solvent 
cleaning machine in kilograms per month.
    (3) The 3-month monthly rolling average solvent emission estimates 
calculated each month using the method as described in Sec. 63.465(c).
    (4) The reports required under paragraphs (f) and (g) of this 
section can be combined into a single report for each facility.
    (h) Each owner or operator of a batch vapor or in-line solvent 
cleaning machine shall submit an exceedance report to the Administrator 
semiannually except when, the Administrator determines on a case-by-
case basis that more frequent reporting is necessary to accurately 
assess the compliance status of the source or, an exceedance occurs. 
Once an exceedance has occurred the owner or operator shall follow a 
quarterly reporting format until a request to reduce reporting 
frequency under paragraph (i) of this section is approved. Exceedance 
reports shall be delivered or postmarked by the 30th day following the 
end of each calendar half or quarter, as appropriate. The exceedance 
report shall include the applicable information in paragraphs (h) (1) 
through (3) of this section.
    (1) Information on the actions taken to comply with Sec. 63.463 (e) 
and (f). This information shall include records of written or verbal 
orders for replacement parts, a description of the repairs made, and 
additional monitoring conducted to demonstrate that monitored 
parameters have returned to accepted levels.
    (2) If an exceedance has occurred, the reason for the exceedance 
and a description of the actions taken.
    (3) If no exceedances of a parameter have occurred, or a piece of 
equipment has not been inoperative, out of control, repaired, or 
adjusted, such information shall be stated in the report.
    (i) An owner or operator who is required to submit an exceedance 
report on a quarterly (or more frequent) basis may reduce the frequency 
of reporting to semiannual if the conditions in paragraphs (i)(1) 
through (i)(3) of this section are met.
    (1) The source has demonstrated a full year of compliance without 
an exceedance.
    (2) The owner or operator continues to comply with all relevant 
recordkeeping and monitoring requirements specified subpart A (General 
Provisions) and in this subpart.
    (3) The Administrator does not object to a reduced frequency of 
reporting for the affected source as provided in paragraph (e)(3)(iii) 
of subpart A (General Provisions).
    (j) The Administrator has determined, pursuant to the criteria 
under section 502(a) of the Act, that an owner or operator of any batch 
cold solvent cleaning machine that is not itself a major source and 
that is not located at a major source, as defined under 40 CFR 70.2, is 
exempt from part 70 permitting requirements for that source.
    An owner or operator of any other solvent cleaning machine subject 
to the provisions of this subpart is subject to part 70 permitting 
requirements, such sources, if not major or located at major sources, 
may be exempted by the State from applying for a part 70 permit until 
42 months after the EPA first approves a part 70 program or such other 
date established by the permitting authority that assures that such 
sources obtain a permit by 5 years after the EPA first approves a part 
70 program.
    (k) Each owner or operator of a solvent cleaning machine requesting 
an equivalency determination, as described in Sec. 63.469 shall submit 
an equivalency request report to the Administrator. For existing 
sources, this report must be submitted to the Administrator no later 
than June 3, 1996. For new sources, this report must be submitted and 
approved by the Administrator prior to startup.


Sec. 63.469  Equivalent methods of control.

    Upon written application, the Administrator may approve the use of 
equipment or procedures after they have been satisfactorily 
demonstrated to be equivalent, in terms of reducing emissions of 
methylene chloride, perchloroethylene, trichloroethylene, 1,1,1-
trichloroethane, carbon tetrachloride or chloroform to the atmosphere, 
to those prescribed for compliance within a specified paragraph of this 
subpart. The application must contain a complete description of the 
equipment or procedure and the proposed equivalency testing procedure 
and the date, time, and location scheduled for the equivalency 
demonstration.
    3. Appendix A is amended by adding Method 307 to read as follows:

Appendix A to Part 63--Test Methods

* * * * *

Method 307--Determination of Emissions From Halogenated Solvent Vapor 
Cleaning Machines Using a Liquid Level Procedure

1. Applicability and Principle

    1.1  Applicability. This method is applicable to the 
determination of the halogenated solvent emissions from solvent 
vapor cleaners in the idling mode.
    1.2  Principle. The solvent level in the solvent cleaning 
machine is measured using inclined liquid level indicators. The 
change in liquid level corresponds directly to the amount of solvent 
lost from the solvent cleaning machine.

2. Apparatus

    Note: Mention of trade names or specific products does not 
constitute endorsement by the Environmental Protection Agency.

    2.1  Inclined Liquid Level Indicator. A schematic of the 
inclined liquid level indicators used in this method is shown in 
figure 307-1; two inclined liquid level indicators having 0.05 
centimeters divisions or smaller shall be used. The liquid level 
indicators shall be made of glass, Teflon, or any similar material 
that will not react with the solvent being used. A 6-inch by 1-inch 
slope is recommended; however the slope may vary depending on the 
size and design of the solvent cleaning machine.

    Note: It is important that the inclined liquid level indicators 
be constructed with ease of reading in mind. The inclined liquid 
level indicators should also be mounted so that they can be raised 
or lowered if necessary to suit the solvent cleaning machine size.

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BILLING CODE 6560-50-C

    2.2  Horizontal Indicator. Device to check the inclined liquid 
level indicators orientation relative to horizontal.
    2.3  Velocity Meter. Hotwire and vane anemometers, or other 
devices capable of measuring the flow rates ranging from 0 to 15.2 
meters per minute across the solvent cleaning machine.

3. Procedure

    3.1  Connection of the Inclined Liquid Level Indicator. Connect 
one of the inclined liquid level indicators to the boiling sump 
drain and the other inclined liquid level indicator to the immersion 
sump drain using Teflon tubing and the appropriate fittings. A 
schematic diagram is shown in figure 307-2.

BILLING CODE 6560-50-P

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BILLING CODE 6560-50-C

    3.2  Positioning of Velocity Meter. Position the velocity meter 
so that it measures the flow rate of the air passing directly across 
the solvent cleaning machine.
    3.3  Level the Inclined Liquid Level Indicators.
    3.4  Initial Inclined Liquid Level Indicator Readings. Open the 
sump drainage valves. Allow the solvent cleaning machine to operate 
long enough for the vapor zone to form and the system to stabilize 
(check with manufacturer). Record the inclined liquid level 
indicators readings and the starting time on the data sheet. A 
sample data sheet is provided in figure 307-3.

Date-------------------------------------------------------------------

Run--------------------------------------------------------------------

Solvent type-----------------------------------------------------------

Solvent density, g/m\3\ (lb/ft\3\)-------------------------------------

Length of boiling sump (SB), m (ft)-------------------------------

Width of boiling sump (WB), m (ft)--------------------------------

Length of immersion sump (SI), m (ft)-----------------------------

Width of immersion sump (WI), m (ft)------------------------------

Length of solvent vapor/air interface (SV), m (ft) ____________

Width of solvent vapor/air interface (WV), m (ft) ____________

------------------------------------------------------------------------
                                          Boiling   Immersion           
               Clock time                   sump       sump    Flow rate
                                          reading    reading    reading 
------------------------------------------------------------------------
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
------------------------------------------------------------------------

Figure 307-3. Data sheet.

    3.5  Final Inclined Liquid Level Indicator Readings. At the end 
of the 16-hour test run, check to make sure the inclined liquid 
level indicators are level; if not, make the necessary adjustments. 
Record the final inclined liquid level indicators readings and time.
    3.6  Determination of Solvent Vapor/Air Interface Area for Each 
Sump. Determine the area of the solvent/air interface of the 
individual sumps. Whenever possible, physically measure these 
dimensions, rather than using factory specifications. A schematic of 
the dimensions of a solvent cleaning machine is provided in figure 
307-4.

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BILLING CODE 6560-50-C

4. Calculations

    4.1   Nomenclature.

AB = area of boiling sump interface, m\2\ (ft\2\).
AI = area of immersion sump interface, m\2\ (ft\2\).
AV = area of solvent/air interface, m\2\ (ft\2\).
E = emission rate, kg/m\2\-hr (lb/ft\2\-hr).
K = 100,000 cm . g/m . kg for metric units.
    = 12 in./ft for English units.
LBF = final boiling sump inclined liquid level indicators 
reading, cm (in.).
LBi = initial boiling sump inclined liquid level indicators 
reading, cm (in.).
LIf = final immersion sump inclined liquid level indicators 
reading, cm (in.).
LIi = initial immersion sump inclined liquid level indicators 
reading, cm (in.).
SB = length of the boiling sump, m (ft).
SI = length of the immersion sump, m (ft).
SV = length of the solvent vapor/air interface, m (ft).
WB = width of the boiling sump, m (ft).
WI = width of the immersion sump, m (ft).
WV = width of the solvent vapor/air interface, m (ft).
     = density of solvent, g/m3 (lb/ft3).
     = test time, hr.

    4.2  Area of Sump Interfaces. Calculate the areas of the boiling 
and immersion sump interfaces as follows:

AB = SB WB    Eq. 307-1
AI = SI WI    Eq. 307-2

    4.3  Area of Solvent/Air Interface. Calculate the area of the 
solvent vapor/air interface as follows:

AV = SV WV    Eq. 307-3

    4.4  Emission Rate. Calculate the emission rate as follows:

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    4. Appendix B to Part 63 is revised to read as follows:

Appendix B--Test of Solvent Cleaning Procedures

General Questions

______ 1. What is the maximum allowable speed for parts entry and 
removal?
    A. 8.5 meters per minute (28 feet per minute).
    B. 3.4 meters per minute (11 feet per minute).
    C. 11 meters per minute (36 feet per minute).
    D. No limit.
______ 2. How do you ensure that parts enter and exit the solvent 
cleaning machine at the speed required in the regulation?
    A. Program on computerized hoist monitors speed.
    B. Can judge the speed by looking at it.
    C. Measure the time it takes the parts to travel a measured 
distance.
______ 3. Identify the sources of air disturbances.
    A. Fans
    B. Open doors
    C. Open windows
    D. Ventilation vents
    E. All of the above
______ 4. What are the three operating modes?
    A. Idling, working and downtime
    B. Precleaning, cleaning, and drying
    C. Startup, shutdown, off
    D. None of the above
______ 5. When can parts or parts baskets be removed from the 
solvent cleaning machine?
    A. When they are clean
    B. At any time
    C. When dripping stops
    D. Either A or C is correct
______ 6. How must parts be oriented during cleaning?
    A. It does not matter as long as they fit in the parts basket.
    B. So that the solvent pools in the cavities where the dirt is 
concentrated.
    C. So that solvent drains from them freely.
______ 7. During startup, what must be turned on first, the primary 
condenser or the sump heater?
    A. Primary condenser
    B. Sump heater
    C. Turn both on at same time
    D. Either A or B is correct
______ 8. During shutdown, what must be turned off first, the 
primary condenser or the sump heater?
    A. Primary condenser
    B. Sump heater
    C. Turn both off at same time
    D. Either A or B is correct
______ 9. In what manner must solvent be added to and removed from 
the solvent cleaning machine?
    A. With leak proof couplings
    B. With the end of the pipe in the solvent sump below the liquid 
solvent surface.
    C. So long as the solvent does not spill, the method does not 
matter.
    D. A and B
______ 10. What must be done with waste solvent and still and sump 
bottoms?
    A. Pour down the drain
    B. Store in closed container
    C. Store in a bucket
    D. A or B
______ 11. What types of materials are prohibited from being cleaned 
in solvent cleaning machines using halogenated HAP solvents?
    A. Sponges
    B. Fabrics
    C. Paper
    D. All of the above

Control Device Specific Questions

[  ] Freeboard Refrigeration Device

______ 1. What temperature must the FRD achieve?
    A. Below room temperature
    B. 50 deg.F
    C. Below the solvent boiling point
    D. 30 percent below the solvent boiling point

[  ] Working-Mode Cover

______ 2. When can a cover be open?
    A. While parts are in the cleaning machine
    B. During parts entry and removal
    C. During maintenance
    D. During measurements for compliance purposes
    E. A and C
    F. B, C, and D
______ 3. Covers must be maintained in what condition?
    A. Free of holes
    B. Free of cracks
    C. So that they completely seal cleaner opening
    D. All of the above

[  ] Dwell

______ 4. Where must the parts be held for the appropriate dwell 
time?
    A. In the vapor zone
    B. In the freeboard area above the vapor zone
    C. Above the cleaning machine
    D. In the immersion sump

Answers

General Questions

 1. B
 2. A or C
 3. E
 4. A
 5. C
 6. C
 7. A
 8. B
 9. D
10. B
11. D

Control Device Specific Questions

 1. D
 2. F
 3. D
 4. B
    5. Appendix C is added to Part 63 to read as follows:

                            Appendix C--General Provisions Applicability to Subpart T                           
----------------------------------------------------------------------------------------------------------------
                                  Applies to subpart T                                                          
          Reference           ----------------------------                        Comments                      
                                    BCC           BVI                                                           
----------------------------------------------------------------------------------------------------------------
63.1(a) (1)-(3)..............  Yes.........  Yes.........                                                       
63.1(a)(4)...................  Yes.........  Yes.........  Subpart T (this appendix) specifies applicability of 
                                                            each paragraph in subpart A to subpart T.           
63.1(a)(5)...................  No..........  No..........                                                       
63.1(a) (6)-(8)..............  Yes.........  Yes.........                                                       
63.1(a)(9)...................  No..........  No..........                                                       
63.1(a)(10)..................  Yes.........  Yes.........                                                       
63.1(a)(11)..................  No..........  No..........  Subpart T allows submittal of notifications and      
                                                            reports through the U.S. mail, fax, and courier.    
                                                            Subpart T requires that the postmark for            
                                                            notifications and reports submitted through the U.S.
                                                            mail or other non-Governmental mail carriers be on  
                                                            or before deadline specified in an applicable       
                                                            requirement.                                        
63.1(a) (12)-(14)............  Yes.........  Yes.........                                                       
63.1(b)(1)...................  No..........  No..........  Subpart T specifies applicability.                   
63.1(b)(2)...................  No..........  Yes.........                                                       
63.1(b)(3)...................  No..........  No..........  Subpart T requires that a record of halogenated      
                                                            cleaning machine applicability determination be kept
                                                            on site for 5 years, or until the cleaning machine  
                                                            changes its operations. The record shall be         
                                                            sufficiently detailed to allow the Administrator to 
                                                            make a finding about the source's applicability     
                                                            status with regard to subpart T.                    
63.1(c)(1)...................  Yes.........  Yes.........                                                       
63.1(c)(2)...................  Yes.........  Yes.........  Subpart T, section 63.46(8)(h), indicates a Title V  
                                                            permit exemption for halogenated HAP batch cold     
                                                            solvent cleaning machines that are not major sources
                                                            and not located at a major source. This section also
                                                            specifies a deferral from the requirement of a Title
                                                            V permit for owners or operators of solvent cleaning
                                                            machines subject to subpart T provisions, other than
                                                            halogenated HAP batch cold solvent cleaning         
                                                            machines, that are not major sources, and not       
                                                            located at a major source.                          
63.1(c)(3)...................  No..........  No..........                                                       
63.1(c)(4)...................  Yes.........  Yes.........                                                       
63.1(c)(5)...................  Yes.........  Yes.........  Subpart T does not require continuous monitoring     
                                                            systems (CMS) or continuous opacity monitoring      
                                                            systems. Therefore, notifications and requirements  
                                                            for CMS and COMS specified in subpart A do not apply
                                                            to subpart T.                                       
63.1(d)......................  No..........  No..........                                                       
63.1(e)......................  No..........  Yes.........                                                       
63.2.........................  Yes.........  Yes.........  Subpart T definitions (section 63.461) for existing  
                                                            and new overlap with the definitions for existing   
                                                            source and new source in subpart A (section 63.2).  
                                                            Both subpart A and T also define Administrator.     
63.3(a)-(c)..................  Yes.........  Yes.........                                                       
63.4(a) (1)-(3)..............  Yes.........  Yes.........                                                       
63.4(a)(4)...................  No..........  No..........                                                       
63.4(a)(5)...................  Yes.........  Yes.........                                                       
63.4(b)-(c)..................  Yes.........  Yes.........                                                       
63.5(a)(1)...................  Yes.........  Yes.........                                                       
63.5(a)(2)...................  Yes.........  Yes.........                                                       
63.5(b)(1)...................  Yes.........  Yes.........                                                       
63.5(b)(2)...................  No..........  No..........                                                       
63.5(b)(3)...................  No..........  No..........  Subpart T overrides the requirement for approval     
                                                            prior to constructing a new or reconstructing an    
                                                            existing major source.                              
63.5(b)(4)-(6)...............  Yes.........  Yes.........                                                       
63.5(c)......................  No..........  No..........                                                       
63.5 (d)-(f).................  No..........  No..........  Subpart T overrides the requirement to submit an     
                                                            application for approval of construction or         
                                                            reconstruction of a halogenated solvent cleaning    
                                                            machine.                                            
63.6(a)......................  Yes.........  Yes.........                                                       
63.6(b) (1)-(5)..............  Yes.........  Yes.........  Subpart T, section 63.460, specifies compliance      
                                                            dates.                                              
63.6(b)(6)...................  No..........  No..........                                                       
63.6(b)(7)...................  No..........  No..........  Subpart T has the same requirements for affected     
                                                            halogenated HAP solvent cleaning machine            
                                                            subcategories that are located at area sources as it
                                                            does for those located at major sources.            
63.6(c)(1)-(2)...............  Yes.........  Yes.........  Subpart T allows 3 years from the date of            
                                                            promulgation for both area and major existing       
                                                            sources to comply.                                  
63.6(c) (3)-(4)..............  No..........  No..........                                                       
63.6(c)(5)...................  Yes.........  Yes.........  Subpart T has the same requirements for affected     
                                                            halogenated HAP solvent cleaning machine            
                                                            subcategories that are located at area sources as it
                                                            does for those located at major sources.            
                                                           Subpart T allows 3 years from the date of            
                                                            promulgation for both area and major existing       
                                                            sources to comply.                                  
63.6(d)......................  No..........  No..........                                                       
63.6(e)(1)-(2)...............  Yes.........  Yes.........                                                       
63.6(e)(3)...................  No..........  No..........  Subpart T overrides the requirement of a startup,    
                                                            shutdown, and malfunction plan. Subpart T specifies 
                                                            startup and shutdown procedures to be followed by an
                                                            owner or operator for batch vapor and in-line       
                                                            cleaning machines.                                  
63.6(f)-(g)..................  Yes.........  Yes.........                                                       
63.6(h)......................  No..........  No..........  Subpart T does not require compliance with an opacity
                                                            or visible emission standard.                       
63.6(i) (1)-(14).............  Yes.........  Yes.........                                                       
63.6(i)(15)..................  No..........  No..........                                                       
63.6(i)(16)..................  Yes.........  Yes.........                                                       
63.6(j)......................  Yes.........  Yes.........                                                       
63.7(a)......................  No..........  Yes.........  Subpart T gives owners or operators the option to    
                                                            perform an idling emission performance test as a way
                                                            of demonstrating compliance. Other options are also 
                                                            available that do not require a performance test.   
63.7(b)......................  No..........  Yes.........  This is only required for those owners or operators  
                                                            that choose the idling emission standard as their   
                                                            compliance option.                                  
63.7(c)(1)...................  No..........  Yes.........  This is only required for those owners or operators  
                                                            that choose the idling emission standard as their   
                                                            compliance option.                                  
63.7(c) (2)-(3)..............  No..........  No..........  Subpart T does not require a site-specific test plan 
                                                            for the idling emission performance test.           
63.7(c)(4)...................  No..........  No..........  Subpart T does not require a performance test that   
                                                            involves the retrieval of gas samples, and therefore
                                                            this does not apply.                                
63.7(d)......................  No..........  No..........  Requirements do not apply to the idling emission     
                                                            performance test option.                            
63.7(e)......................  No..........  Yes.........                                                       
63.7(f)......................  No..........  Yes.........                                                       
63.7(g)......................  No..........  Yes.........  Subpart T specifies what is required to demonstrate  
                                                            idling emission standard compliance through the use 
                                                            of the Environmental Protection Agency test method  
                                                            307 and control device monitoring. Reports and      
                                                            records of testing and monitoring are required for  
                                                            compliance verification. Three runs of the test are 
                                                            required for compliance, as specified in section    
                                                            63.7(e) of subpart A.                               
63.7(h)......................  No..........  No..........  Subpart T does not require the use of a performance  
                                                            test to comply with the standard. The idling        
                                                            emission standard option (which requires an idling  
                                                            emission performance test) is an alternative option 
                                                            offered to owners or operators of batch vapor and in-
                                                            line cleaning machines for compliance flexibility.  
63.8 (a)-(b).................  Yes.........  Yes.........                                                       
63.8 (c)-(e).................  No..........  No..........  Subpart T does not require the use of continuous     
                                                            monitoring systems to demonstrate compliance.       
63.8(f)......................  Yes.........  Yes.........                                                       
63.8(g)......................  No..........  No..........  Subpart T does not require continuous opacity        
                                                            monitoring systems and continuous monitoring systems
                                                            data.                                               
63.9(a) (1)-(4)..............  Yes.........  Yes.........                                                       
63.9(b)(1)...................  Yes.........  Yes.........                                                       
63.9(b)(2)...................  Yes.........  Yes.........  Subpart T includes all of those requirements stated  
                                                            in subpart A, except that subpart A also requires a 
                                                            statement as to whether the affected source is a    
                                                            major or an area source, and an identification of   
                                                            the relevant standard (including the source's       
                                                            compliance date). Subpart T also has some more      
                                                            specific information requirements specific to the   
                                                            affected source (see subpart T, sections 63.468(a)- 
                                                            (b)).                                               
63.9(b)(3)...................  Yes.........  Yes.........  The subpart A and subpart T initial notification     
                                                            reports differ (see above).                         
63.9(b)(4)...................  No..........  No..........  Subpart T does not require an application for        
                                                            approval of construction or reconstruction.         
63.9(b)(5)...................  Yes.........  Yes.........  .....................................................
63.9(c)......................  Yes.........  Yes.........  .....................................................
63.9(d)......................  Yes.........  Yes.........  .....................................................
63.9(e)......................  Yes.........  Yes.........  Under subpart T, this requirement only applies to    
                                                            owners or operators choosing to comply with the     
                                                            idling emissions standard.                          
63.9(f)......................  No..........  No..........  Subpart T does not require opacity or visible        
                                                            emission observations.                              
63.9(g)(1)...................  No..........  No..........  Subpart T does not require the use of continuous     
                                                            monitoring systems or continuous opacity monitoring 
                                                            systems.                                            
63.9(h)......................  No..........  No..........  Section 63.468 of subpart T requires an initial      
                                                            statement of compliance for existing sources to be  
                                                            submitted to the Administrator no later than 150    
                                                            days after the compliance date specified in section 
                                                            63.460(d) of subpart T. For new sources, this report
                                                            is to be submitted to the Administrator no later    
                                                            than 150 days from the date specified in section    
                                                            63.460(c).                                          
63.9(i)......................  Yes.........  Yes.........                                                       
63.9(j)......................  Yes.........  Yes.........                                                       
63.10(a).....................  Yes.........  Yes.........                                                       
63.10(b).....................  No..........  No..........  Recordkeeping requirements are specified in subpart  
                                                            T.                                                  
63.10(c) (1)-(15)............  No..........  No..........  Subpart T does not require continuous monitoring     
                                                            systems.                                            
63.10(d)(1)..................  Yes.........  Yes.........                                                       
63.10(d)(2)..................  No..........  No..........  Reporting requirements are specified in subpart T.   
63.10(e) (l)-(2).............  No..........  No..........  Subpart T does not require continuous emissions      
                                                            monitoring systems.                                 
63.10(e)(3)..................  No..........  No..........  Subpart T does not require continuous monitoring     
                                                            systems.                                            
63.10(e)(4)..................  No..........  No..........  Subpart T does not require continuous opacity        
                                                            monitoring systems.                                 
63.10(f).....................  Yes.........  Yes.........                                                       
63.11(a).....................  Yes.........  Yes.........                                                       
63.11(b).....................  No..........  No..........  Flares are not a control option under subpart T.     
63.12 (a)-(c)................  Yes.........  Yes.........                                                       
63.13 (a)-(c)................  Yes.........  Yes.........                                                       
63.14........................  No..........  No..........  Subpart T requirements do not require the use of the 
                                                            test methods incorporated by reference in subpart A.
63.15(a)-(b).................  Yes.........  Yes.........                                                       
----------------------------------------------------------------------------------------------------------------
BCC=Batch Cold Cleaning Machines.                                                                               
BVI=Batch Vapor and In-line Cleaning Machines.                                                                  

[FR Doc. 94-28974 Filed 12-01-94; 8:45 am]
BILLING CODE 6560-50-P