[Federal Register Volume 70, Number 164 (Thursday, August 25, 2005)]
[Rules and Regulations]
[Pages 50118-50136]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-16701]



[[Page 50117]]

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Part V





Environmental Protection Agency





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40 CFR Part 63



National Emissions Standards for Hazardous Air Pollutants: Reinforced 
Plastic Composites Production; Direct Final Rule

Federal Register / Vol. 70, No. 164 / Thursday, August 25, 2005 / 
Rules and Regulations

[[Page 50118]]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[OAR-2003-0003; FRL-7957-7]
RIN 2060-AM23


National Emissions Standards for Hazardous Air Pollutants: 
Reinforced Plastic Composites Production

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule; amendments.

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SUMMARY: The EPA is taking direct final action on amendments to the 
national emissions standards for hazardous air pollutants (NESHAP) for 
reinforced plastic composites production which were issued April 12, 
2003, under section 112 of the Clean Air Act (CAA). The direct final 
amendments revise compliance options for open molding, correct errors, 
and add clarification to sections of the rule. We are issuing the 
amendments as a direct final rule, without prior proposal, because we 
view the revisions as noncontroversial and anticipate no adverse 
comments. However, in the Proposed Rules section of this Federal 
Register notice, we are publishing a separate document that will serve 
as the proposal to amend the NESHAP for reinforced plastic composites 
production if adverse comments are filed.

DATES: The direct final rule is effective on October 24, 2005 without 
further notice, unless EPA receives adverse written comment by 
September 26, 2005 or if a public hearing is requested by September 6, 
2005. If adverse comments are received, EPA will publish a timely 
withdrawal in the Federal Register indicating which provisions will 
become effective and which provisions are being withdrawn due to 
adverse comment.

ADDRESSES: Submit your comments, identified by Docket ID No. OAR-2003-
0003, by one of the following methods:
    <bullet> Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the on-line instructions for submitting comments.
    <bullet> Agency Web site: http://www.epa.gov/edocket. EDOCKET, 
EPA's electronic public docket and comment system, is EPA's preferred 
method for receiving comments. Follow the on-line instructions for 
submitting comments.
    <bullet> E-mail: <a href="/cdn-cgi/l/email-protection#94f5b9f5faf0b9e6b9f0fbf7fff1e0d4f1e4f5baf3fbe2"><span class="__cf_email__" data-cfemail="4b2a662a252f6639662f2428202e3f0b2e3b2a652c243d">[email protected]</span></a> and <a href="/cdn-cgi/l/email-protection#046665766a6170702a6f616d706c446174652a636b72"><span class="__cf_email__" data-cfemail="d0b2b1a2beb5a4a4febbb5b9a4b890b5a0b1feb7bfa6">[email protected]</span></a>.
    <bullet> Fax: (202) 566-1741 and (919) 541-5600.
    <bullet> Mail: U.S. Postal Service, send comments to: HQ EPA Docket 
Center (6102T), Attention Docket ID No. OAR-2003-0003, 1200 
Pennsylvania Avenue, NW., Washington, DC 20460. Please include a total 
of two copies. We request that you also send a separate copy of each 
comment to the contact person listed below (see FOR FURTHER INFORMATION 
CONTACT).
    <bullet> Hand Delivery: In person or by courier, deliver comments 
to: HQ EPA Docket Center (6102T), Attention Docket ID No. OAR-2003-
0003, 1301 Constitution Avenue, NW., Room B-108, Washington, DC 20004. 
Such deliveries are only accepted during the Docket's normal hours of 
operation, and special arrangements should be made for deliveries of 
boxed information. Please include a total of two copies.
    Instructions: Direct your comments to Docket ID No. OAR-2003-0003. 
The EPA's policy is that all comments received will be included in the 
public docket without change and may be made available online at http://www.epa.gov/edocket, including any personal information provided, 
unless the comment includes information claimed to be confidential 
business information (CBI) or other information whose disclosure is 
restricted by statute. Do not submit information that you consider to 
be CBI or otherwise protected through EDOCKET, regulations.gov, or e-
mail. Send or deliver information identified as CBI only to the 
following address: Mr. Roberto Morales, OAQPS Document Control Officer, 
EPA (C404-02), Attention Docket ID No. OAR-2003-0003, Research Triangle 
Park, NC 27711. Clearly mark the part or all of the information that 
you claim to be CBI. The EPA EDOCKET and the Federal regulations.gov 
Web sites are ``anonymous access'' systems, which means EPA will not 
know your identity or contact information unless you provide it in the 
body of your comment. If you send an e-mail comment directly to EPA 
without going through EDOCKET or regulations.gov, your e-mail address 
will be automatically captured and included as part of the comment that 
is placed in the public docket and made available on the Internet. If 
you submit an electronic comment, EPA recommends that you include your 
name and other contact information in the body of your comment and with 
any disk or CD-ROM you submit. If EPA cannot read your comment due to 
technical difficulties and cannot contact you for clarification, EPA 
may not be able to consider your comment. Electronic files should avoid 
the use of special characters, any form of encryption, and be free of 
any defects or viruses. For additional information about EPA's public 
docket visit EDOCKET on-line or see the Federal Register of May 31, 
2002 (67 FR 38102).
    Docket: All documents in the docket are listed in the EDOCKET index 
at http://www.epa.gov/edocket. Although listed in the index, some 
information is not publicly available, i.e., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, is not placed on the Internet and will be 
publicly available only in hard copy form. Publicly available docket 
materials are available either electronically in EDOCKET or in hardcopy 
at the HQ EPA Docket Center, Docket ID No. OAR-2003-0003, EPA West 
Building, Room B-102, 1301 Constitution Ave., NW., Washington, DC. The 
Public Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through 
Friday, excluding legal holidays. The telephone number for the Public 
Reading Room is (202) 566-1744, and the telephone number for the HQ EPA 
Docket Center is (202) 566-1742. A reasonable fee may be charged for 
copying docket materials.

FOR FURTHER INFORMATION CONTACT: For further information contact Mr. 
Keith Barnett, EPA, Office of Air Quality Planning and Standards, 
Emission Standards Division, Minerals and Inorganic Chemicals Group 
(C504-05), Research Triangle Park, North Carolina 27711; telephone 
number (919) 541-5605; fax number (919) 541-5600; e-mail address: 
<a href="/cdn-cgi/l/email-protection#c6a4a7b4a8a3b2b2e8ada3afb2ae86a3b6a7e8a1a9b0"><span class="__cf_email__" data-cfemail="3755564559524343195c525e435f7752475619505841">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:
    Regulated Entities. Categories and entities potentially regulated 
by this action include:

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                                                          Examples of
            Category                 NAICS code\1\    regulated entities
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Industry........................  325211, 326122,     Reinforced plastic
                                   325991, 326191,     composites
                                   327991, 327993,     production
                                   332998, 33312,      facilities that
                                   33651, 335311,      manufacture
                                   335313, 335312,     intermediate and/
                                   33422, 336211,      or final products
                                   336112, 336211,     using styrene
                                   33651, 33635,       containing
                                   336399, 33612,      thermoset resins
                                   336213, 336413;     and gel coats.
                                   and 336214.

[[Page 50119]]

 
Federal Government..............  ..................  Federally owned
                                                       facilities that
                                                       manufacture
                                                       intermediate and/
                                                       or final products
                                                       using styrene
                                                       containing
                                                       thermoset resins
                                                       and gel coats.
------------------------------------------------------------------------
\1\ North American Industry Classification System.

    This table is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be regulated by this 
action. To determine whether your facility is regulated by this action, 
you should examine the applicability criteria in 40 CFR 63.5785 and 40 
CFR 63.5787 of the final NESHAP. If you have any questions regarding 
the applicability of this action to a particular entity, consult the 
person listed in the preceding FOR FURTHER INFORMATION CONTACT section.
    Worldwide Web (WWW). In addition to being available in the docket, 
an electronic copy of today's final NESHAP will also be available on 
the WWW through the Technology Transfer Network (TTN). Following the 
Administrator's signature, a copy of the NESHAP will be posted on the 
TTN's policy and guidance page for newly proposed or promulgated rules 
at http://www.epa.gov/ttn/oarpg/. The TTN provides information and 
technology exchange in various areas of air pollution control.
    Comments. We are publishing the direct final rule amendments 
without prior proposal because we view the amendments as 
noncontroversial and do not anticipate adverse comments. However, in 
the Proposed Rules section of this Federal Register notice, we are 
publishing a separate document that will serve as the proposal to amend 
the NESHAP for reinforced plastic composites production if adverse 
comments are filed. If we receive any adverse comments on one or more 
distinct amendments, we will publish a timely withdrawal in the Federal 
Register informing the public which provisions will become effective, 
and which provisions are being withdrawn due to adverse comment. We 
will address all public comments in a subsequent final rule, should the 
Agency determine to issue one. Any of the distinct amendments in 
today's direct final rule for which we do not receive adverse comment 
will become effective on the previously mentioned date. We will not 
institute a second comment period on the direct final rule amendments. 
Any parties interested in commenting must do so at this time.
    Judicial Review. Under section 307(b)(1) of the CAA, judicial 
review of the direct final rule amendments is available only by filing 
a petition for review in the U.S. Court of Appeals for the District of 
Columbia Circuit by October 24, 2005. Under section 307(d)(7)(B) of the 
CAA, only an objection to the direct final rule amendments that was 
raised with reasonable specificity during the period for public comment 
can be raised during judicial review. Moreover, under section 307(b)(2) 
of the CAA, the requirements established by the direct final rule 
amendments may not be challenged separately in any civil or criminal 
proceeding brought by EPA to enforce these requirements.
    Outline. The information presented in this preamble is organized as 
follows:

I. Background
II. Amendments to 40 CFR Part 63, Subpart WWWW
III. Statutory and Executive Order Reviews
    A. Executive Order 12866, Regulatory Planning and Review
    B. Paperwork Reduction Act
    C. Regulatory Flexibility Act
    D. Unfunded Mandates Reform Act
    E. Executive Order 13132, Federalism
    F. Executive Order 13175, Consultation and Coordination With 
Indian Tribal Governments
    G. Executive Order 13045, Protection of Children From 
Environmental Health Risks and Safety Risks
    H. Executive Order 13211, Actions Concerning Regulations that 
Significantly Affect Energy Supply, Distribution, or Use
    I. National Technology Transfer and Advancement Act
    J. Congressional Review Act

I. Background

    The EPA promulgated NESHAP for reinforced plastic composites 
production on April 21, 2003. The final rule (40 CFR part 63, subpart 
WWWW) includes standards for hazardous air pollutants (HAP), as well as 
monitoring, performance testing, recordkeeping, and reporting 
requirements related to those standards. After promulgation of the 
rule, EPA received numerous questions relating to rule interpretation. 
The questions pointed out minor inconsistencies in some of the tables 
and the rule language, areas where the rule requirements were not 
clear, and restrictions that would preclude most facilities using the 
least burdensome open molding compliance option. Today's action 
includes direct final rule amendments that resolve inconsistencies, 
clarify language, and add additional compliance flexibility. None of 
the amendments will have any discernable effect on the stringency of 
the rule.

II. Amendments to 40 CFR Part 63, Subpart WWWW

    This subpart applies to facilities that manufacture reinforced 
plastic composites and are located at major sources of hazardous air 
pollutants. For more information on rule applicability see 40 CFR 
63.5785.
    The EPA received numerous questions relating to rule requirements 
for polymer casting and closed molding operations. These operations 
were mentioned in the rule or rule preamble so it would be clear that 
they were covered by the rule. However, we did not list any 
requirements for these operations in the rule, except for compression/
injection closed molding which has a work practice requirement. In 
order to make it clear these operations have no requirements, polymer 
casting and closed molding operations (except for compression/injection 
molding) have been added to the list of operations with no requirements 
in 40 CFR 63.5790(c). We also added language to that paragraph to 
clarify that though certain operations have no requirements, any 
requirements that apply to co-located operations are not affected.
    A question was raised concerning area sources that commenced 
construction prior to August 2, 2002, but did not become a major source 
until after August 2, 2002. The final rule language in 40 CFR 
63.5795(a)(2) appears to imply that any area source that became major 
due to an expansion or other type of construction after August 2, 2002, 
would be considered a new source because it was not an affected source 
prior to commencing construction. Our intent was that any existing 
source would not become a new source as the result of reconstruction. 
Therefore, we are changing the sentence ``You commence construction, 
and no other reinforced plastic composites production affected source 
exists at that site'' by removing the word affected from the sentence. 
The new language will now read ``You commence construction, and no 
other reinforced plastic composites production source exists at that 
site.'' Therefore, it will

[[Page 50120]]

now be clear that an area source that existed prior to August 3, 2002 
will not be considered a new source once it becomes major due to an 
expansion or other type of reconstruction.
    In 40 CFR 63.5799, the first sentence of paragraph (a) refers to 
paragraphs (b) and (d) of 40 CFR 63.5805. Paragraph (b) of 40 CFR 
63.5805 discusses existing source requirements. We should have 
referenced paragraph (c) of 40 CFR 63.5805, which discusses 
requirements for new facilities. We have changed the rule text to 
correct this.
    Also in 40 CFR 63.5799(b), we included a sentence that stated ``If 
an existing facility has accepted an enforceable permit limit of less 
than 100 tons per year of HAP, and can demonstrate that they will 
operate at that level subsequent to the compliance date, then they can 
be deemed to be below the 100 tons per year (tpy) threshold.'' We 
received a comment that this sentence implies that a facility that used 
process controls could not use a permit limit of 100 tons per year 
(tpy) to demonstrate they were below the 100 tpy threshold. Our intent 
was that any facility that could demonstrate, through its permit 
requirements, that it would be below the 100 tpy threshold would not 
have to perform emission calculations. Therefore, we have changed the 
sentence to read ``If an existing facility has accepted an enforceable 
permit limit that would result in emissions of less than 100 tpy of HAP 
measured prior to any add-on controls, and can demonstrate that they 
will operate at that level subsequent to the compliance date, they can 
be deemed to be below the 100 tpy threshold.'' This should make it 
clear that both restricted operation hours and use of process controls 
are acceptable methods to demonstrate through permit requirements that 
the facility will not meet nor exceed the 100 tpy threshold.
    We received numerous questions concerning 40 CFR 63.5805, 
specifically concerning when the 95 percent control requirement applied 
to existing sources, and which operations were potentially subject to 
95 percent control. We have revised the wording of 40 CFR 63.5805 to 
make it more clear by changing paragraphs (a) and (b). Paragraph 40 CFR 
63.5805(a) now discusses only the limits applicable to centrifugal 
casting and continuous lamination/casting operations, rather that all 
operations at existing sources. Paragraph 40 CFR 63.5805(b) discusses 
all operations at existing sources not covered in paragraph 40 CFR 
63.5805(a). No requirements have changed as result of this revision.
    We received several questions relating to the values for the 
highest organic HAP content for compliant materials shown in Table 3 to 
subpart WWWW of part 63. In one case, a local regulatory agency wanted 
to write the organic HAP limits in Table 3 to subpart WWWW as absolute 
permit limits. In another case, someone interpreted the organic HAP 
limits as absolute limits not to be exceeded.
    The purpose of the highest organic HAP content for compliant 
materials shown in Table 3 to subpart WWWW was only to provide examples 
of compliant materials, and these values are not emission limits or HAP 
content limits. The actual emission limits are the pounds per ton (lb/
ton) limits in the third column of Table 3 to subpart WWWW. If you meet 
the lb/ton limits in the third column of Table 3 to subpart WWWW, you 
are in compliance, regardless of the HAP content of the resin or gel 
coat.
    In order to clarify our intent, we have removed the fourth column 
from Table 3 to subpart WWWW and reorganized the discussion of 
compliance options in 40 CFR 63.5810. Paragraph (a) of 40 CFR 63.5810 
now covers how to determine if a specific resin or gel coat, as 
applied, meets its applicable emission limit. Paragraph (b) of 40 CFR 
63.5810 covers averaging within each individual combination of 
operation type and resin application method or gel coat type. Paragraph 
(c) of 40 CFR 63.5810 covers demonstrating compliance using a weighted 
average emission limit. Paragraph (d) of 40 CFR 63.5810 covers options 
where you can meet the organic HAP emissions limit for one resin 
application method and use the same resin for all application methods 
of that resin type.
    After promulgation, it was pointed out to EPA that for a facility 
to be able to use the compliant materials compliance option, all 
materials would have to be compliant. Therefore, even if a facility 
used numerous resin and gel coats, having one noncompliant material 
would require all materials be included in some type of averaging. This 
would not result in any additional emissions reductions, but would 
increase the amount of reporting and recordkeeping.
    A second comment concerned the use of the term ``compliant 
materials.'' It was pointed out that it is the combination of a 
specific resin or gel coat, the application method, and controls that 
determine compliance, not the resin or gel coat alone. For example, a 
38 percent HAP resin applied with nonatomized spray has an emission 
factor that is below its corresponding emission limit and, therefore, 
would comply with its applicable emission limit. However, if the same 
resin is applied manually, its emission factor would be above its 
corresponding emission limit, and to comply with the rule, this 
combination of resin and application method would have to be averaged 
with other operations. This specific resin, as applied, complies in one 
case, but not the other. Therefore, using the term compliant materials 
is misleading.
    For this reason, we have modified 40 CFR 63.5810 to clarify that 
when a specific resin or gel coat, as applied, meets the applicable 
emission limit, then it is in compliance, and we have dropped the term 
compliant materials from the rule. We are also modifying the rule to 
allow facilities to both demonstrate compliance for some resins and gel 
coats using averaging, and that some individual resins and gel coats, 
as applied, comply with their emission limits. This change will have no 
impact on the actual rule limits and should result in no change in HAP 
emissions, but may reduce the required reporting and recordkeeping. We 
have also revised paragraph (d) of 40 CFR 63.5895, which discusses 
collecting data to demonstrate continuous compliance, to reflect this 
change in compliance options. We are limiting this flexibility for a 
specific resin or gel coat to state that if a specific resin or gel 
coat is being used in any averaging calculations, then all of that 
specific resin or gel coat resin must be part of averaging, even if the 
resin, as applied, would meet its applicable emission limit. You must 
collect resin use data for any resin or gel coat that is involved in 
averaging.
    In paragraph (a) of 40 CFR 63.5810, we state that you may 
demonstrate compliance for an individual resin or gel coat based on the 
HAP content, application method, and any controls that reduce its 
emission factor. As an example, a non-corrosion resistant/high strength 
(non-CR/HS) resin with an organic HAP content of 38 percent, applied 
using nonatomized spray, would have an emission factor of 86 lb/ton 
calculated using Equation 1.c.i of table 1 to subpart WWWW of part 63. 
The emission limit for this operation as shown in table 3 to subpart 
WWWW of part 63 is 88 lb/ton. Therefore, this resin, as applied, 
complies with its emission limit. If the facility switches to atomized 
resin application, the emission factor would change to 183 lb/ton, and 
the resin would not comply with its emission limit.
    A second example of demonstrating compliance for an individual 
resin or

[[Page 50121]]

gel coat would be a 41 percent HAP resin that contains a vapor 
suppressant with a vapor suppressant effectiveness factor of 0.5 
applied using nonatomized spray. The emission factor calculated using 
Equation 1.c.i from table 1 to subpart WWWW of part 63 would be 74.2 
lb/ton. This is below the emission limit of 88 lb/ton. Therefore, this 
resin, as applied complies with its emission limit as long as 
nonatomized mechanical application and vapor suppressant continue to be 
used.
    If a facility required to meet the limits in table 3 to subpart 
WWWW of part 63 has some type of add-on control, the control efficiency 
may be used to show compliance. For example, a facility that uses a 35 
percent HAP white gel coat with atomized spray has an emission factor 
of 335.5 lb/ton, which is above the allowable emission limit of 267 lb/
ton. Therefore, this gel coat, as applied, does not comply with its 
emission limit. However, if the facility controlled the gel coat spray 
booth emissions by 47.5 percent overall (50 percent capture efficiency 
and 95 percent control), the emission factor would now be 176 lb/ton, 
and the gel coat does comply. This would require that the facility 
demonstrate the capture and control efficiency using the appropriate 
test methods in the NESHAP.
    We have also added a paragraph (d)(4) to 40 CFR 63.5810 that states 
if a facility elects to comply using the option in paragraph (d) of 40 
CFR 63.5810 and uses resins that meet the organic HAP limits in table 7 
to subpart WWWW of part 63, then those individual resins would be 
considered to be in compliance, and resin use records are not required.
    A commenter stated that some pultrusion machines have multiple 
preform and pre-wet areas prior to the die. This configuration is 
incompatible with the language of 40 CFR 63.5830(b)(4) because this 
language would only be correct for one pre-wet area. Therefore, we have 
revised the language so multiple preform and pre-wet areas can be used. 
This change does not affect the total amount of area allowed to be open 
and should not have any impact on control effectiveness.
    A commenter stated that some direct die injection systems do not 
recycle resin drip directly back to the resin injection chamber. It is 
recycled back to the process. We agree that recycling the resin back to 
the process would result in no additional emissions and have modified 
the description of direct die injection in 40 CFR 63.5830(c)(3) to 
reflect this.
    Another commenter stated that they manufactured large pultruded 
parts that currently do not meet the large parts definition of 1,000 
reinforcements and a cross sectional area of 60 inches or more shown in 
footnote 6 of table 3 to subpart WWWW of part 63. These parts were well 
over 60 inches of cross sectional area but contain large roving and 
stitched fabrics for reinforcement. They maintained that these parts 
should be included in the large parts definition because the factors we 
used to determine what made a part large, i.e., part size and 
complexity, were as relevant here as they would be if they replaced the 
fabric and larger roving with a smaller roving and more individual 
reinforcements to meet the 1,000 reinforcement requirement.
    We agree with this comment and have changed the definition of large 
pultruded parts for existing pultrusion operations in footnote 6 to 
table 3 of subpart WWWW of part 63 to 60 square inches or more and 
1,000 reinforcements, or 60 square inches or more and the glass 
equivalent of 1,000 ends of 113 yield roving. This change also includes 
correcting the cross sectional measure to 60 square inches, not 60 
inches. We also made corresponding changes to item 9 of table 9 to 
subpart WWWW of part 63.
    We received a comment that equation 2 in 40 CFR 63.5885 was in 
error because, based on the definition of uncontrolled wet-out area 
organic HAP emissions, the equation did not account for emissions that 
are captured and vented to a control device. We agreed with this 
comment and have revised equations 2 and 3 of 40 CFR 63.5885 to account 
for all emissions generated in the wet-out areas.
    A commenter noted that we did not specify how a source was to 
report changing compliance options. We have added paragraph (i) to 40 
CFR 63.5910 that requires the source to state if they changed 
compliance options in their next compliance report.
    We made several corrections to the definitions in 40 CFR 63.5935 in 
response to comments. In the definition for ``high performance gel 
coat,'' we had listed the National Science Foundation as a source of 
property testing standards. This should have been the National 
Sanitation Foundation. We changed the definition of ``mixing'' to 
include mixing of putties or polyputties. In the definition for ``neat 
resin plus,'' we had left the word ``plus'' out of the last sentence. 
In the definition of ``polymer casting,'' a commenter noted that 
sometimes polymer casters vibrate or smooth the material. We added 
language to the ``polymer casting'' definition to make it clear that 
vibrating or smoothing the resin is not considered rolling out or 
working the resin.
    We made several changes to table 1 to subpart WWWW of part 63. We 
corrected a typographical error in the column numbering. We also 
corrected equation 1.f where we had an error on the first term of the 
equation and added a new equation to calculate emissions from atomized 
spray gel coat using robotic or automated spray. Finally, we added a 
footnote to table 1 to subpart WWWW of part 63 stating that the 
equations presented are intended for use to determine compliance with 
the rule and do not preclude the use of other emission factors to 
calculate emissions for other purposes, such as reports required by 
their title V permit. The reason for this change was an industry 
concern that State and local regulators were requiring sources to use 
the equations in table 1 to subpart WWWW of part 63 in lieu of 
potentially more accurate factors. However, this footnote does not 
preclude a facility from using the equations in table 1 to subpart WWWW 
of part 63 if these equations are deemed to be the most accurate 
available.
    Several changes were made to table 3 to subpart WWWW of part 63 
based on comments and questions received after promulgation of the 
final rule. We received a comment that for three of the operations in 
table 1 to subpart WWWW of part 63, substituting the value for the 
highest HAP content for a compliant resin in column four into the 
equations in table 1 to subpart WWWW of part 63 resulted in a 
calculated emission factor that was above the corresponding emission 
limit. This should not happen if the resin or gel coat is considered 
compliant. On further review, we discovered that the error was due to 
the way we rounded the calculations during floor development. As a 
result, the facilities that set the floor for these three operations 
would not be in compliance. We do not believe that the rounding 
procedure should result in a floor-setting facility to now be out of 
compliance with the floor. Therefore, we changed the rounding technique 
used to calculate the emission limits for the open molding operations 
in table 3 to subpart WWWW of part 63. The result was the emission 
limits for the three operations noted by the commenter changed 
slightly. The limit for open molding, CR/HS resins, mechanical resin 
application changed from 112 to 113 lb/ton. The emission limit for non-
CR/HS resin, mechanical resin changed from 87 to 88 lb/ton. The 
emission limit for open molding, tooling gel coat changed from 437 to 
440 lb/ton. These changes will not affect the costs

[[Page 50122]]

of compliance or emissions reductions of the rule. The changes simply 
make the floor emission limits consistent with the facilities setting 
the floors. The changes in table 3 to subpart WWWW of part 63 also 
slightly changed the calculated maximum HAP content for these processes 
shown in table 7 to subpart WWWW of part 63, and we have updated table 
7 to subpart WWWW of part 63 to reflect the changes in table 3 to 
subpart WWWW of part 63.
    One commenter stated that regulated sources were confused on which 
emission limit to use for shrinkage controlled resins when the resin is 
used to make tools. We added a footnote to clarify that a shrinkage 
controlled resin is subject to the emission limits in item 5 of table 3 
to subpart WWWW of part 63 regardless of whether it is used as a 
tooling or a production resin.
    In table 3 to subpart WWWW of part 63 we did not have emission 
limits for manually applied gel coat because we did not have data to 
develop specific limits. In the footnotes, we stated that for 
compliance purposes, manually applied gel coat should be treated as if 
it were applied using spray guns. In table 1 to subpart WWWW of part 
63, we had an equation to calculate an emission factor for manual gel 
coat application, but we stated not to use the equation for compliance 
purposes. We believe this has caused some confusion. Therefore, we have 
removed the manual gel coat equation from table 1 to subpart WWWW of 
part 63 because this equation is not necessary to show compliance with 
the NESHAP. We have also revised the footnote concerning manual gel 
coat application in table 3 to subpart WWWW of part 63 to make it more 
clear that to demonstrate compliance for manually applied gel coat you 
treat manually applied gel coat as if it were applied using spray 
equipment.
    A commenter noted that footnote 1 should apply to items 6 and 7 of 
table 4 to subpart WWWW of part 63, not just to item 8. We agree with 
this comment and have revised table 4 to subpart WWWW of part 63 
accordingly.
    A commenter noted that table 7 to subpart WWWW of part 63 as 
written implied that, for items 1.a and 4.a, it would be permissible to 
use atomized mechanical application. This was not our intent. The 
compliance options in table 7 were intended to provide additional 
flexibility to regulated sources by allowing the use of the same resin 
in different operations. The organic HAP limits based on mechanical 
resin application were all determined using nonatomized spray. 
Therefore, we have added a footnote to items 1.a and 4.a. of table 7 to 
subpart WWWW of part 63 to state that nonatomized resin application is 
required.
    A commenter noted that the language in item 5.a.ii of table 8 to 
subpart WWWW of part 63 implies that all pultrusion machines at 
existing sources must reduce emissions by 60 weight percent, while the 
language in 40 CFR 63.5830(e)(2) states that facilities may demonstrate 
compliance if the weighted average reduction based on resin throughput 
for all machines combined in 60 percent. We have revised item 5.a.ii of 
table 8 to subpart WWWW of part 63 to make the language consistent with 
40 CFR 63.5830(e)(2). We also changed 40 CFR 63.5830(e)(2) to correct a 
spelling error.
    We received several questions concerning the applicability of rule 
requirements to filler putties used to fill gaps or smooth sharp 
corners. We did not specifically investigate these materials in the 
rulemaking. Putties are sometimes made on site using production resin, 
but are also purchased as a separate product. We noted that the NESHAP 
for Boat Manufacturing exempted putties, polyputties, and adhesives 
from any requirements. Because we cannot say with certainty that filler 
putties could meet the emission limits for manual resin application, we 
are amending the rule to exclude putties, polyputties, and adhesives 
from any emission limits. This will make the Reinforced Plastic 
Composites Production NESHAP consistent with the Boat Manufacturing 
NESHAP. However, any emissions from mixing of putties and polyputties 
would be subject to the appropriate mixing emission limits or work 
practices. We do not believe this will result in any change in the 
stringency of the NESHAP for two reasons. First, most facilities use 
very small amounts of putty compared to their use of resin and gel 
coat. Second, the small amount of putty used will have a very small 
surface area relative to the volume and be highly filled, which will 
tend to result in less emissions than a comparable volume of resin or 
gel coat.
    We also have amended Sec. Sec.  63.5900, 63.5910, and 63.5915 of 40 
CFR part 63 to parallel changes in other sections and incorporate 
paragraph referencing changes.

III. Statutory and Executive Order Reviews

A. Executive Order 12866, Regulatory Planning and Review

    Under Executive Order 12866 (58 FR 51735, October 4, 1993), the EPA 
must determine whether this regulatory action is ``significant'' and, 
therefore, subject to Office of Management and Budget (OMB) review and 
the requirements of the Executive Order. The Executive Order defines 
``significant regulatory action'' as one that is likely to result in a 
rule that may:
    (1) Have an annual effect on the economy of $100 million or more or 
adversely affect in a material way the economy, a sector of the 
economy, productivity, competition, jobs, the environment, public 
health or safety, or State, local, or tribal governments or 
communities;
    (2) create a serious inconsistency or otherwise interfere with an 
action taken or planned by another agency;
    (3) materially alter the budgetary impact of entitlements, grants, 
user fees, or loan programs or the rights and obligations of recipients 
thereof; or
    (4) raise novel legal or policy issues arising out of legal 
mandates, the President's priorities, or the principles set forth in 
the Executive Order.
    It has been determined that this rule is not a ``significant 
regulatory action'' under the terms of Executive Order 12866 and is, 
therefore, not subject to OMB review.''

B. Paperwork Reduction Act

    This action does not impose any new information collection burden. 
This action adds clarifications and corrections to the final standards. 
However, the OMB has previously approved the information collection 
requirements contained in the existing regulations (68 FR 36982, June 
20, 2003) under the provisions of the Paperwork Reduction Act, 44 
U.S.C. 3501, et seq. and has assigned OMB control number 2060-0509 (EPA 
ICR No. 1976.02). A copy of the Information Collection Request (ICR) 
may be obtained from Susan Auby by mail at the Office of Environmental 
Information, Collection Strategies Division (2822), EPA, 1200 
Pennsylvania Avenue, NW., Washington, DC 20460, by e-mail at 
<a href="/cdn-cgi/l/email-protection#bddcc8dfc493cec8cedcd3fdd8cddc93dad2cb"><span class="__cf_email__" data-cfemail="79180c1b00570a0c0a1817391c0918571e160f">[email protected]</span></a>, or by calling (202) 566-1672. You also may download 
a copy from the Internet at http://www.epa.gov/icr. Include the ICR 
number in any correspondence.
    Burden means the total time, effort, or financial resources 
expended by persons to generate, maintain, retain, or disclose or 
provide information to or for a Federal agency. This includes the time 
needed to review instructions; develop, acquire, install, and utilize 
technology and systems for the purposes of collecting, validating, and 
verifying information, processing and maintaining information, and 
disclosing and providing information; adjust the

[[Page 50123]]

existing ways to comply with any previously applicable instructions and 
requirements; train personnel to be able to respond to a collection of 
information; search data sources; complete and review the collection of 
information; and transmit or otherwise disclose the information.
    An agency may not conduct or sponsor, and a person is not required 
to respond to a collection of information unless it displays a 
currently valid OMB control number. The OMB control numbers for EPA's 
regulations are listed in 40 CFR part 9.

C. Regulatory Flexibility Analysis

    EPA has determined that it is not necessary to prepare a regulatory 
flexibility analysis in connection with the direct final rule 
amendments.
    For purposes of assessing the impacts of today's final rule on 
small entities, small entity is defined as: (1) A small business as 
defined by the Small Business Administrations' regulations at 13 CFR 
121.201; (2) a small governmental jurisdiction that is a government of 
a city, county, town, school district or special district with a 
population of less than 50,000; and (3) a small organization that is 
any not-for-profit enterprise which is independently owned and operated 
and is not dominant in its field.
    After considering the economic impacts of today's direct final rule 
amendments on small entities, EPA has concluded that this action will 
not have a significant economic impact on a substantial number of small 
entities. We have determined that the direct final rule amendments will 
not impose any new requirements on small entities. Today's action 
includes direct final rule amendments that resolve inconsistencies, 
clarify language, and add additional compliance flexibility. None of 
the amendments will have any discernable effect on the stringency of 
the rule.

D. Unfunded Mandates Reform Act

    Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), Public 
Law 104-4, establishes requirements for Federal agencies to assess the 
effects of their regulatory actions on State, local, and tribal 
governments and the private sector. Under section 202 of the UMRA, EPA 
generally must prepare a written statement, including a cost-benefit 
analysis, for proposed and final rules with ``Federal mandates'' that 
may result in expenditures to State, local, and tribal governments, in 
the aggregate, or to the private sector, of $100 million or more in any 
1 year. Before promulgating a rule for which a written statement is 
needed, section 205 of the UMRA generally requires us to identify and 
consider a reasonable number of regulatory alternatives and adopt the 
least costly, most cost-effective, or least burdensome alternative that 
achieves the objectives of the rule. The provisions of section 205 do 
not apply when they are inconsistent with applicable law. Moreover, 
section 205 allows us to adopt an alternative other than the least 
costly, most cost-effective, or least burdensome alternative if the 
Administrator publishes with the final rule an explanation why that 
alternative was not adopted. Before EPA establishes any regulatory 
requirements that may significantly or uniquely affect small 
governments, including tribal governments, it must have developed under 
section 203 of the UMRA a small government agency plan. The plan must 
provide for notifying potentially affected small governments, enabling 
officials of affected small governments to have meaningful and timely 
input in the development of EPA regulatory proposals with significant 
Federal intergovernmental mandates, and informing, educating, and 
advising small governments on compliance with the regulatory 
requirements.
    The EPA has determined that the direct final rule amendments do not 
contain a Federal mandate that may result in expenditures of $100 
million or more for State, local, and tribal governments, in the 
aggregate, or the private sector in any 1 year. The direct final rule 
amendments apply only to affected sources in the reinforced plastic 
composites industry and clarify and correct errors in the final rule 
and, therefore, add no additional burden on sources. Thus, the direct 
final rule amendments are not subject to the requirements of sections 
202 and 205 of the UMRA.

E. Executive Order 13132, Federalism

    Executive Order 13132, entitled ``Federalism'' (64 FR 43255, August 
10, 1999), requires EPA to develop an accountable process to ensure 
``meaningful and timely input by State and local officials in the 
development of regulatory policies that have federalism implications.'' 
``Policies that have federalism implications'' is defined in the 
Executive Order to include regulations that have ``substantial direct 
effects on the States, on the relationship between the national 
government and the States, or on the distribution of power and 
responsibilities among the various levels of government.''
    The direct final rule amendments do not have federalism 
implications. They will not have substantial direct effects on the 
States, on the relationship between the national government and the 
States, or on the distribution of power and responsibilities among the 
various levels of government, as specified in Executive Order 13132. No 
reinforced plastic composites production facilities subject to the 
direct final rule amendments are owned by State or local governments. 
Therefore, State and local governments will not have any direct 
compliance costs resulting from the direct final rule amendments. 
Furthermore, the direct final rule amendments do not require these 
governments to take on any new responsibilities. Thus, Executive Order 
13132 does not apply to the direct final rule amendments.

F. Executive Order 13175, Consultation and Coordination With Indian 
Tribal Governments

    Executive Order 13175, entitled ``Consultation and Coordination 
with Indian Tribal Governments'' (65 FR 67249, November 9, 2000), 
requires EPA to develop an accountable process to ensure ``meaningful 
and timely input by tribal officials in the development of regulatory 
policies that have tribal implications.'' The direct final rule 
amendments do not have tribal implications as specified in Executive 
Order 13175. They will not have substantial direct effects on tribal 
governments, on the relationship between the Federal government and 
Indian tribes, or on the distribution of power and responsibilities 
between the Federal government and Indian tribes, because we are not 
aware of any Indian tribal governments or communities affected by the 
direct final rule amendments. Thus, Executive Order 13175 does not 
apply to the direct final rule amendments.
    The EPA specifically solicits additional comment on the direct 
final rule amendments from tribal officials.

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

    Executive Order 13045 (62 FR 19885, April 23, 1997) applies to any 
rule that: (1) Is determined to be ``economically significant'' as 
defined under Executive Order 12866, and (2) concerns an environmental 
health or safety risk that EPA has reason to believe may have a 
disproportionate effect on children. If the regulatory action meets 
both criteria, the Agency must evaluate the environmental health or 
safety effects of the planned rule on children, and explain why the 
planned regulation is preferable to other potentially effective and 
reasonably feasible alternatives

[[Page 50124]]

considered by the Agency. The EPA interprets Executive Order 13045 as 
applying only to those regulatory actions that are based on health or 
safety risks, such that the analysis required under section 5-501 of 
the Executive Order has the potential to influence the regulation. The 
direct final rule amendments are not subject to Executive Order 13045 
because they are based on technology performance and not on health or 
safety risks. They are also not considered ``economically significant'' 
as defined under Executive Order 12866.

H. Executive Order 13211, Actions That Significantly Affect Energy 
Supply, Distribution, or Use

    The direct final rule amendments are not subject to Executive Order 
13211 (66 FR 28355, May 22, 2001) because they are not a significant 
regulatory action under Executive Order 12866.

I. National Technology Transfer Advancement Act

    Section 12(d) of the National Technology Transfer Advancement Act 
(NTTAA) of 1995, Public Law 104-113, 12(d) (15 U.S.C. 272 note) directs 
EPA to use voluntary consensus standards (VCS) in its regulatory 
activities unless to do so would be inconsistent with applicable law or 
otherwise impractical. The VCS are technical standards (e.g., materials 
specifications, test methods, sampling procedures, and business 
practices) that are developed or adopted by VCS bodies. The NTTAA 
directs EPA to provide Congress, through the OMB, explanations when the 
Agency decides not to use available and applicable VCS.
    The direct final rule amendments do not involve technical 
standards. Therefore, EPA is not considering the use of any VCS.

J. Congressional Review Act

    The Congressional Review Act, 5 U.S.C. 801, et seq., as added by 
the Small Business Regulatory Enforcement Fairness Act of 1996, 
generally provides that before a rule may take effect, the agency 
promulgating the rule must submit a rule report, which includes a copy 
of the rule, to each House of the Congress and to the Comptroller 
General of the United States. The EPA will submit a report containing 
the direct final rule amendments and other required information to the 
United States Senate, the United States House of Representatives, and 
the Comptroller General of the United States prior to publication of 
the direct final rule amendments in the Federal Register. A major rule 
cannot take effect until 60 days after it is published in the Federal 
Register. The direct final rule amendments are not a ``major rule'' as 
defined by 5 U.S.C. 804(2). The direct final rule amendments are 
effective on October 24, 2005.

List of Subjects in 40 CFR Part 63

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

    Dated: August 16, 2005.
Stephen L. Johnson,
Administrator.

0
For the reasons stated in the preamble, title 40, chapter I, part 63 of 
the Code of the Federal Regulations is amended as follows:

PART 63--[AMENDED]

0
1. The authority citation for part 63 continues to read as follows:

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

Subpart WWWW--[Amended]

0
2. Section 63.5790 is amended by revising paragraph (c) to read as 
follows:


Sec.  63.5790  What parts of my plant does this subpart cover?

* * * * *
    (c) The following operations are specifically excluded from any 
requirements in this subpart: application of mold sealing and release 
agents; mold stripping and cleaning; repair of parts that you did not 
manufacture, including non-routine manufacturing of parts; personal 
activities that are not part of the manufacturing operations (such as 
hobby shops on military bases); prepreg materials as defined in Sec.  
63.5935; non-gel coat surface coatings; application of putties, 
polyputties, and adhesives; repair or production materials that do not 
contain resin or gel coat; research and development operations as 
defined in section 112(c)(7) of the CAA; polymer casting; and closed 
molding operations (except for compression/injection molding). Note 
that the exclusion of certain operations from any requirements applies 
only to operations specifically listed in this paragraph. The 
requirements for any co-located operations still apply.
* * * * *

0
3. Section 63.5795 is revised to read as follows:


Sec.  63.5795  How do I know if my reinforced plastic composites 
production facility is a new affected source or an existing affected 
source?

    (a) A reinforced plastic composites production facility is a new 
affected source if it meets all the criteria in paragraphs (a)(1) and 
(2) of this section.
    (1) You commence construction of the source after August 2, 2001.
    (2) You commence construction, and no other reinforced plastic 
composites production source exists at that site.
    (b) For the purposes of this subpart, an existing affected source 
is any affected source that is not a new affected source.

0
4. Section 63.5799 is amended by:
0
a. Revising paragraph (a); and
0
b. Revising the paragraph (b) introductory text to read as follows:


Sec.  63.5799  How do I calculate my facility's organic HAP emissions 
on a tpy basis for purposes of determining which paragraphs of Sec.  
63.5805 apply?

* * * * *
    (a) For new facilities prior to startup, calculate a weighted 
average organic HAP emissions factor for the operations specified in 
Sec.  63.5805(c) and (d) on a lbs/ton of resin and gel coat basis. Base 
the weighted average on your projected operation for the 12 months 
subsequent to facility startup. Multiply the weighted average organic 
HAP emissions factor by projected resin use over the same period. You 
may calculate your organic HAP emissions factor based on the factors in 
Table 1 to this subpart, or you may use any HAP emissions factor 
approved by us, such as factors from the ``Compilation of Air Pollutant 
Emissions Factors, Volume I: Stationary Point and Area Sources (AP-
42),'' or organic HAP emissions test data from similar facilities.
    (b) For existing facilities and new facilities after startup, you 
may use the procedures in either paragraph (b)(1) or (2) of this 
section. If the emission factors for an existing facility have changed 
over the period of time prior to their initial compliance date due to 
incorporation of pollution-prevention control techniques, existing 
facilities may base the average emission factor on their operations as 
they exist on the compliance date. If an existing facility has accepted 
an enforceable permit limit that would result in less than 100 tpy of 
HAP measured prior to any add-on controls, and can demonstrate that 
they will operate at that level subsequent to the compliance date, they 
can be deemed to be below the 100 tpy threshold.
* * * * *

0
5. Section 63.5805 is revised to read as follows:


Sec.  63.5805  What standards must I meet to comply with this subpart?

    You must meet the requirements of paragraphs (a) through (h) of 
this section

[[Page 50125]]

that apply to you. You may elect to comply using any options to meet 
the standards described in Sec. Sec.  63.5810 through 63.5830. Use the 
procedures in Sec.  63.5799 to determine if you meet or exceed the 100 
tpy threshold.
    (a) If you have an existing facility that has any centrifugal 
casting or continuous casting/lamination operations, you must meet the 
requirements of paragraph (a)(1) or (2) of this section:
    (1) If the combination of all centrifugal casting and continuous 
lamination/casting operations emit 100 tpy or more of HAP, you must 
reduce the total organic HAP emissions from centrifugal casting and 
continuous lamination/casting operations by at least 95 percent by 
weight. As an alternative to meeting the 95 percent by weight 
requirement, centrifugal casting operations may meet the applicable 
organic HAP emissions limits in Table 5 to this subpart and continuous 
lamination/casting operations may meet an organic HAP emissions limit 
of 1.47 lbs/ton of neat resin plus and neat gel coat plus applied. For 
centrifugal casting, the percent reduction requirement does not apply 
to organic HAP emissions that occur during resin application onto an 
open centrifugal casting mold using open molding application 
techniques.
    (2) If the combination of all centrifugal casting and continuous 
lamination/casting operations emit less than 100 tpy of HAP, then 
centrifugal casting and continuous lamination/casting operations must 
meet the appropriate requirements in Table 3 to this subpart.
    (b) All operations at existing facilities not listed in paragraph 
(a) of this section must meet the organic HAP emissions limits in Table 
3 to this subpart and the work practice standards in Table 4 to this 
subpart that apply, regardless of the quantity of HAP emitted.
    (c) If you have a new facility that emits less than 100 tpy of HAP 
from the combination of all open molding, centrifugal casting, 
continuous lamination/casting, pultrusion, SMC manufacturing, mixing, 
and BMC manufacturing, you must meet the organic HAP emissions limits 
in Table 3 to this subpart and the work practice standards in Table 4 
to this subpart that apply to you.
    (d)(1) Except as provided in paragraph (d)(2) of this section, if 
you have a new facility that emits 100 tpy or more of HAP from the 
combination of all open molding, centrifugal casting, continuous 
lamination/casting, pultrusion, SMC manufacturing, mixing, and BMC 
manufacturing, you must reduce the total organic HAP emissions from 
these operations by at least 95 percent by weight and meet any 
applicable work practice standards in Table 4 to this subpart that 
apply to you. As an alternative to meeting 95 percent by weight, you 
may meet the organic HAP emissions limits in Table 5 to this subpart. 
If you have a continuous lamination/casting operation, that operation 
may alternatively meet an organic HAP emissions limit of 1.47 lbs/ton 
of neat resin plus and neat gel coat plus applied.
    (2)(i) If your new facility manufactures large reinforced plastic 
composites parts using open molding or pultrusion operations, the 
specific open molding and pultrusion operations used to produce large 
parts are not required to reduce HAP emissions by 95 weight percent, 
but must meet the emission limits in Table 3 to this subpart.
    (ii) A large open molding part is defined as a part that, when the 
final finished part is enclosed in the smallest rectangular six-sided 
box into which the part can fit, the total interior volume of the box 
exceeds 250 cubic feet, or any interior sides of the box exceed 50 
square feet.
    (iii) A large pultruded part is a part that exceeds an outside 
perimeter of 24 inches or has more than 350 reinforcements.
    (e) If you have a new or existing facility subject to paragraph 
(a)(2) or (c) of this section at its initial compliance date that 
subsequently meets or exceeds the 100 tpy threshold in any calendar 
year, you must notify your permitting authority in your compliance 
report. You may at the same time request a one-time exemption from the 
requirements of paragraph (a)(1) or (d) of this section in your 
compliance report if you can demonstrate all of the following:
    (1) The exceedance of the threshold was due to circumstances that 
will not be repeated.
    (2) The average annual organic HAP emissions from the potentially 
affected operations for the last 3 years were below 100 tpy.
    (3) Projected organic HAP emissions for the next calendar year are 
below 100 tpy, based on projected resin and gel coat use and the HAP 
emission factors calculated according to the procedures in Sec.  
63.5799.
    (f) If you apply for an exemption in paragraph (e) of this section 
and subsequently exceed the HAP emission thresholds specified in 
paragraph (a)(2) or (c) of this section over the next 12-month period, 
you must notify the permitting authority in your semiannual report, the 
exemption is removed, and your facility must comply with paragraph 
(a)(1) or (d) of this section within 3 years from the time your organic 
HAP emissions first exceeded the threshold.
    (g) If you have repair operations subject to this subpart as 
defined in Sec.  63.5785, these repair operations must meet the 
requirements in Tables 3 and 4 to this subpart and are not required to 
meet the 95 percent organic HAP emissions reduction requirements in 
paragraph (a)(1) or (d) of this section.
    (h) If you use an add-on control device to comply with this 
subpart, you must meet all requirements contained in 40 CFR part 63, 
subpart SS.

0
6. Section 63.5810 is revised to read as follows:


Sec.  63.5810  What are my options for meeting the standards for open 
molding and centrifugal casting operations at new and existing sources?

    You must use one of the following methods in paragraphs (a) through 
(d) of this section to meet the standards for open molding or 
centrifugal casting operations in Table 3 or 5 to this subpart. You may 
use any control method that reduces organic HAP emissions, including 
reducing resin and gel coat organic HAP content, changing to 
nonatomized mechanical application, using covered curing techniques, 
and routing part or all of your emissions to an add-on control. You may 
use different compliance options for the different operations listed in 
Table 3 or 5 to this subpart. The necessary calculations must be 
completed within 30 days after the end of each month. You may switch 
between the compliance options in paragraphs (a) through (d) of this 
section. When you change to an option based on a 12-month rolling 
average, you must base the average on the previous 12 months of data 
calculated using the compliance option you are changing to, unless you 
were previously using an option that did not require you to maintain 
records of resin and gel coat use. In this case, you must immediately 
begin collecting resin and gel coat use data and demonstrate compliance 
12 months after changing options.
    (a) Demonstrate that an individual resin or gel coat, as applied, 
meets the applicable emission limit in Table 3 or 5 to this subpart. 
(1) Calculate your actual organic HAP emissions factor for each 
different process stream within each operation type. A process stream 
is defined as each individual combination of resin or gel coat, 
application technique, and control technique. Process streams within 
operations types are considered different from each other if any of the 
following four

[[Page 50126]]

characteristics vary: the neat resin plus or neat gel coat plus organic 
HAP content, the gel coat type, the application technique, or the 
control technique. You must calculate organic HAP emissions factors for 
each different process stream by using the appropriate equations in 
Table 1 to this subpart for open molding and for centrifugal casting, 
or site-specific organic HAP emissions factors discussed in Sec.  
63.5796. The emission factor calculation should include any and all 
emission reduction techniques used including any add-on controls. If 
you are using vapor suppressants to reduce HAP emissions, you must 
determine the vapor suppressant effectiveness (VSE) by conducting 
testing according to the procedures specified in appendix A to subpart 
WWWW of 40 CFR part 63. If you are using an add-on control device to 
reduce HAP emissions, you must determine the add-on control factor by 
conducting capture and control efficiency testing using the procedures 
specified in Sec.  63.5850. The organic HAP emissions factor calculated 
from the equations in Table 1 to this subpart, or a site-specific 
emissions factor, is multiplied by the add-on control factor to 
calculate the organic HAP emissions factor after control. Use Equation 
1 of this section to calculate the add-on control factor used in the 
organic HAP emissions factor equations.
[GRAPHIC] [TIFF OMITTED] TR25AU05.013


Where:
Percent Control Efficiency=a value calculated from organic HAP 
emissions test measurements made according to the requirements of 
Sec.  63.5850 to this subpart.

    (2) If the calculated emission factor is less than or equal to the 
appropriate emission limit, you have demonstrated that this process 
stream complies with the emission limit in Table 3 to this subpart. It 
is not necessary that all your process streams, considered 
individually, demonstrate compliance to use this option for some 
process streams. However, for any individual resin or gel coat you use, 
if any of the process streams that include that resin or gel coat are 
to be used in any averaging calculations described in paragraphs (b) 
through (d) of this section, then all process streams using that 
individual resin or gel coat must be included in the averaging 
calculations.
    (b) Demonstrate that, on average, you meet the individual organic 
HAP emissions limits for each combination of operation type and resin 
application method or gel coat type. Demonstrate that on average you 
meet the individual organic HAP emissions limits for each unique 
combination of operation type and resin application method or gel coat 
type shown in Table 3 to this subpart that applies to you.
    (1)(i) Group the process streams described in paragraph (a) to this 
section by operation type and resin application method or gel coat type 
listed in Table 3 to this subpart and then calculate a weighted average 
emission factor based on the amounts of each individual resin or gel 
coat used for the last 12 months. To do this, sum the product of each 
individual organic HAP emissions factor calculated in paragraph (a)(1) 
of this section and the amount of neat resin plus and neat gel coat 
plus usage that corresponds to the individual factors and divide the 
numerator by the total amount of neat resin plus and neat gel coat plus 
used in that operation type as shown in Equation 2 of this section.
[GRAPHIC] [TIFF OMITTED] TR25AU05.014

Where:
Actual Process Stream EF<INF>i</INF>=actual organic HAP emissions 
factor for process stream i, lbs/ton;
Material<INF>i</INF>=neat resin plus or neat gel coat plus used 
during the last 12 calendar months for process stream i, tons;
n=number of process streams where you calculated an organic HAP 
emissions factor.

    (ii) You may, but are not required to, include process streams 
where you have demonstrated compliance as described in paragraph (a) of 
this section, subject to the limitations described in paragraph (a)(2) 
of this section, and you are not required to and should not include 
process streams for which you will demonstrate compliance using the 
procedures in paragraph (d) of this section.
    (2) Compare each organic HAP emissions factor calculated in 
paragraph (b)(1) of this section with its corresponding organic HAP 
emissions limit in Table 3 or 5 to this subpart. If all emissions 
factors are equal to or less than their corresponding emission limits, 
then you are in compliance.
    (c) Demonstrate compliance with a weighted average emission limit. 
Demonstrate each month that you meet each weighted average of the 
organic HAP emissions limits in Table 3 or 5 to this subpart that apply 
to you. When using this option, you must demonstrate compliance with 
the weighted average organic HAP emissions limit for all your open 
molding operations, and then separately demonstrate compliance with the 
weighted average organic HAP emissions limit for all your centrifugal 
casting operations. Open molding operations and centrifugal casting 
operations may not be averaged with each other.
    (1) Each month calculate the weighted average organic HAP emissions 
limit for all open molding operations and the weighted average organic 
HAP emissions limit for all centrifugal casting operations for your 
facility for the last 12-month period to determine the organic HAP 
emissions limit you must meet. To do this, multiply the individual 
organic HAP emissions limits in Table 3 or 5 to this subpart for each 
open molding (centrifugal casting) operation type by the amount of neat 
resin plus or neat gel coat plus used in the last 12 months for each 
open molding (centrifugal casting) operation type, sum these results, 
and then divide this sum by the total amount of neat resin plus and 
neat gel coat plus used in open molding (centrifugal casting) over the 
last 12 months as shown in Equation 3 of this section.

[[Page 50127]]

[GRAPHIC] [TIFF OMITTED] TR25AU05.015

Where:
EL<INF>i</INF>=organic HAP emissions limit for operation type i, 
lbs/ton from Tables 3 or 5 to this subpart;
Material<INF>i</INF>=neat resin plus or neat gel coat plus used 
during the last 12-month period for operation type i, tons;
n=number of operations.

    (2) Each month calculate your weighted average organic HAP 
emissions factor for open molding and centrifugal casting. To do this, 
multiply your actual open molding (centrifugal casting) operation 
organic HAP emissions factors calculated in paragraph (b)(1) of this 
section and the amount of neat resin plus and neat gel coat plus used 
in each open molding (centrifugal casting) operation type, sum the 
results, and divide this sum by the total amount of neat resin plus and 
neat gel coat plus used in open molding (centrifugal casting) 
operations as shown in Equation 4 of this section.
[GRAPHIC] [TIFF OMITTED] TR25AU05.016

Where:
Actual Individual EF<INF>i</INF>=Actual organic HAP emissions factor 
for operation type i, lbs/ton;
Material<INF>i</INF>=neat resin plus or neat gel coat plus used 
during the last 12 calendar months for operation type i, tons;
n=number of operations.

    (3) Compare the values calculated in paragraphs (c)(1) and (2) of 
this section. If each 12-month rolling average organic HAP emissions 
factor is less than or equal to the corresponding 12-month rolling 
average organic HAP emissions limit, then you are in compliance.
    (d) Meet the organic HAP emissions limit for one application method 
and use the same resin(s) for all application methods of that resin 
type. This option is limited to resins of the same type. The resin 
types for which this option may be used are noncorrosion-resistant, 
corrosion-resistant and/or high strength, and tooling.
    (1) For any combination of manual resin application, mechanical 
resin application, filament application, or centrifugal casting, you 
may elect to meet the organic HAP emissions limit for any one of these 
application methods and use the same resin in all of the resin 
application methods listed in this paragraph (d)(1). Table 7 to this 
subpart presents the possible combinations based on a facility 
selecting the application process that results in the highest allowable 
organic HAP content resin. If the resin organic HAP content is below 
the applicable value shown in Table 7 to this subpart, the resin is in 
compliance.
    (2) You may also use a weighted average organic HAP content for 
each application method described in paragraph (d)(1) of this section. 
Calculate the weighted average organic HAP content monthly. Use 
Equation 2 in paragraph (b)(1) of this section except substitute 
organic HAP content for organic HAP emissions factor. You are in 
compliance if the weighted average organic HAP content based on the 
last 12 months of resin use is less than or equal to the applicable 
organic HAP contents in Table 7 to this subpart.
    (3) You may simultaneously use the averaging provisions in 
paragraph (b) or (c) of this section to demonstrate compliance for any 
operations and/or resins you do not include in your compliance 
demonstrations in paragraphs (d)(1) and (2) of this section. However, 
any resins for which you claim compliance under the option in 
paragraphs (d)(1) and (2) of this section may not be included in any of 
the averaging calculations described in paragraph (b) or (c) of this 
section.
    (4) You do not have to keep records of resin use for any of the 
individual resins where you demonstrate compliance under the option in 
paragraph (d)(1) of this section unless you elect to include that resin 
in the averaging calculations described in paragraph (d)(2) of this 
section.

0
7. Section 63.5830 is amended by:
0
a. Revising paragraph (b)(4);
0
b. Revising paragraph (c)(3); and
0
c. Revising paragraph (e)(2) to read as follows.


Sec.  63.5830  What are my options for meeting the standards for 
pultrusion operations subject to the 60 weight percent organic HAP 
emissions reductions requirement?

* * * * *
    (b) * * *
    (4) For pultrusion lines with pre-wet area(s) prior to direct die 
injection, no more than 12.5 inches of open wet stock is permitted 
between the entrance of the first pre-wet area and the entrance to the 
die. If the pre-wet stock has any drip, it must be enclosed.
* * * * *
    (c) * * *
    (3) Resin drip is captured in a closed system and recycled back to 
the process.
* * * * *
    (e) * * *
    (2) The weighted average reduction based on resin throughput of all 
machines combined is 60 percent. For purposes of the average percent 
reduction calculation, wet area enclosures reduce organic HAP emissions 
by 60 percent, and direct die injection and preform injection reduce 
organic HAP emissions by 90 percent.

0
8. Section 63.5885 is revised to read as follows:


Sec.  63.5885  How do I calculate percent reduction to demonstrate 
compliance for continuous lamination/casting operations?

    You may calculate percent reduction using any of the methods in 
paragraphs (a) through (d) of this section.
    (a) Compliant line option. If all of your wet-out areas have PTE 
that meet the requirements of EPA Method 204 of appendix M of 40 CFR 
part 51, and all of your wet-out area organic HAP emissions and oven 
organic HAP emissions are vented to an add-on control device, use 
Equation 1 of this section to demonstrate compliance. In all other 
situations, use Equation 2 of this section to demonstrate compliance.

[[Page 50128]]

[GRAPHIC] [TIFF OMITTED] TR25AU05.017


Where:
PR=percent reduction;
Inlet+HAP emissions entering the control device, lbs per year;
Outlet=HAP emissions existing the control device to the atmosphere, 
lbs per year.

[GRAPHIC] [TIFF OMITTED] TR25AU05.018


Where:
PR=percent reduction;
WAEi<INF>ci</INF>=wet-out area organic HAP emissions, lbs per year, 
vented to a control device;
WAEi<INF>u</INF>=wet-out area organic HAP emissions, lbs per year, 
not vented to a control device;
Oj<INF>u</INF>=oven organic HAP emissions, lbs per year, not vented 
to a control device;
Oj<INF>ci</INF>=oven organic HAP emissions, lbs per year, vented to 
a control device;
WAEi<INF>co</INF>=wet-out area organic HAP emissions, lbs per year, 
from the control device outlet;
Oj<INF>co</INF>=oven organic HAP emissions, lbs per year, from the 
control device outlet.

    (b) Averaging option. Use Equation 3 of this section to calculate 
percent reduction.
[GRAPHIC] [TIFF OMITTED] TR25AU05.019


Where:
PR=percent reduction;
WAEi<INF>ci</INF>=wet-out area organic HAP emissions from wet-out 
area i, lbs per year, sent to a control device;
WAEi<INF>u</INF>=wet-out area organic HAP emissions from wet-out 
area i, lbs per year, not sent to a control device;
WAEi<INF>co</INF>=wet-out area organic HAP emissions from wet-out 
area i, lbs per year, at the outlet of a control device;
Oj<INF>u</INF>=organic HAP emissions from oven j, lbs per year, not 
sent to a control device;
Oj<INF>ci</INF>=organic HAP emissions from oven j, lbs per year, 
sent to a control device;
Oj<INF>co</INF>=organic HAP emissions from oven j, lbs per year, at 
the outlet of the control device;
m=number of wet-out areas;
n=number of ovens.

    (c) Add-on control device option. Use Equation 1 of this section to 
calculate percent reduction.
    (d) Combination option. Use Equations 1 through 3 of this section, 
as applicable, to calculate percent reduction.

0
9. Section 63.5895 is amended by revising paragraph (d) to read as 
follows:


Sec.  63.5895  How do I monitor and collect data to demonstrate 
continuous compliance?

* * * * *
    (d) Resin and gel coat use records are not required for the 
individual resins and gel coats that are demonstrated, as applied, to 
meet their applicable emission as defined in Sec.  63.5810(a). However, 
you must retain the records of resin and gel coat organic HAP content, 
and you must include the list of these resins and gel coats and 
identify their application methods in your semiannual compliance 
reports. If after you have initially demonstrated that a specific 
combination of an individual resin or gel coat, application method, and 
controls meets its applicable emission limit, and the resin or gel coat 
changes or the organic HAP content increases, or you change the 
application method or controls, then you again must demonstrate that 
the individual resin or gel coat meets its emission limit as specified 
in paragraph (a) of Sec.  63.5810. If any of the previously mentioned 
changes results in a situation where an individual resin or gel coat 
now exceeds its applicable emission limit in Table 3 or 5 of this 
subpart, you must begin collecting resin and gel coat use records and 
calculate compliance using one of the averaging options on a 12-month 
rolling average.
* * * * *

0
10. Section 63.5900 is amended by revising paragraphs (a)(2) and (3) to 
read as follows:


Sec.  63.5900  How do I demonstrate continuous compliance with the 
standards?

    (a) * * *
    (2) Compliance with organic HAP emissions limits is demonstrated by 
maintaining an organic HAP emissions factor value less than or equal to 
the appropriate organic HAP emissions limit listed in Table 3 or 5 to 
this subpart, on a 12-month rolling average, and/or by including in 
each compliance report a statement that individual resins and gel 
coats, as applied, meet the appropriate organic HAP emissions limits, 
as discussed in Sec.  63.5895(d).
    (3) Compliance with organic HAP content limits in Table 7 to this 
subpart is demonstrated by maintaining an average organic HAP content 
value less than or equal to the appropriate organic HAP contents listed 
in Table 7 to this subpart, on a 12-month rolling average, and/or by 
including in each compliance report a statement that resins and gel 
coats individually meet the appropriate organic HAP content limits in 
Table 7 to this subpart, as discussed in Sec.  63.5895(d).
* * * * *

0
11. Section 63.5910 is amended by:
0
a. Revising paragraph (f); and
0
b. Adding paragraph (i) to read as follows.


Sec.  63.5910  What reports must I submit and when?

* * * * *
    (f) You must report if you have exceeded the 100 tpy organic HAP 
emissions threshold if that exceedance would make your facility subject 
to Sec.  63.5805(a)(1) or (d). Include with this report any request for 
an exemption under Sec.  63.5805(e). If you receive an exemption under 
Sec.  63.5805(e) and subsequently exceed the 100 tpy organic HAP 
emissions threshold, you must

[[Page 50129]]

report this exceedance as required in Sec.  63.5805(f).
* * * * *
    (i) Where multiple compliance options are available, you must state 
in your next compliance report if you have changed compliance options 
since your last compliance report.

0
12. Section 63.5915 is amended by revising paragraph (e) introductory 
text to read as follows:


Sec.  63.5915  What records must I keep?

* * * * *
    (e) For a new or existing continuous lamination/ casting operation, 
you must keep the records listed in paragraphs (e)(1) through (4) of 
this section, when complying with the percent reduction and/or lbs/ton 
requirements specified in paragraphs (a) and (c) through (d) of Sec.  
63.5805.
* * * * *

0
13. Section 63.5935 is amended to revise the definitions of High 
performance gel coat, Mixing, Neat resin plus, and Polymer casting to 
read as follows:


Sec.  63.5935  What definitions apply to this subpart?

* * * * *
    High Performance gel coat means a gel coat used on products for 
which National Sanitation Foundation, United States Department of 
Agriculture, ASTM, durability, or other property testing is required.
* * * * *
    Mixing means the blending or agitation of any HAP-containing 
materials in vessels that are 5.00 gallons (18.9 liters) or larger, and 
includes the mixing of putties or polyputties. Mixing may involve the 
blending of resin, gel coat, filler, reinforcement, pigments, 
catalysts, monomers, and any other additives.
* * * * *
    Neat resin plus means neat resin plus any organic HAP-containing 
materials that are added to the resin by the supplier or the facility. 
Neat resin plus does not include any added filler, reinforcements, 
catalysts, or promoters. Neat resin plus does include any additions of 
styrene or methyl methacrylate monomer in any form, including in 
catalysts and promoters.
* * * * *
    Polymer casting means a process for fabricating composites in which 
composite materials are ejected from a casting machine or poured into 
an open, partially open, or closed mold and cured. After the composite 
materials are poured into the mold, they are not rolled out or worked 
while the mold is open, except for smoothing the material and/or 
vibrating the mold to remove bubbles. The composite materials may or 
may not include reinforcements. Products produced by the polymer 
casting process include cultured marble products and polymer concrete.
* * * * *

0
14. Table 1 to subpart WWWW of part 63 is revised to read as follows:

BILLING CODE 6560-50-P

[[Page 50130]]

[GRAPHIC] [TIFF OMITTED] TR25AU05.020


[[Page 50131]]


[GRAPHIC] [TIFF OMITTED] TR25AU05.021

BILLING CODE 6560-50-C

0
15. Table 3 to subpart WWWW of part 63 is revised to read as follows:
    As specified in Sec.  63.5805, you must meet the following organic 
HAP emissions limits that apply to you:

[[Page 50132]]



  Table 3 to Subpart WWWW of Part 63.--Organic HAP Emissions Limits for
  Specific Open Molding, Centrifugal Casting, Pultrusion and Continuous
                      Lamination/Casting Operations
------------------------------------------------------------------------
                                                       \1\ Your organic
 If your operation type is . . .   And you use . . .     HAP emissions
                                                        limit is . . .
------------------------------------------------------------------------
1. open molding--corrosion-       a. mechanical       113 lb/ton.
 resistant and/or high strength    resin application. 171 lb/ton.
 (CR/HS).                         b. filament         123 lb/ton.
                                   application.
                                  c. manual resin
                                   application.
---------------------------------
2. open molding--non-CR/HS......  a. mechanical       88 lb/ton.
                                   resin application. 188 lb/ton.
                                  b. filament         87 lb/ton.
                                   application.
                                  c. manual resin
                                   application.
---------------------------------
3. open molding--tooling........  a. mechanical       254 lb/ton.
                                   resin application. 157 lb/ton.
                                  b. manual resin
                                   application.
---------------------------------
4. open molding--low-flame        a. mechanical       497 lb/ton.
 spread/low-smoke products.        resin application. 270 lb/ton.
                                  b. filament         238 lb/ton.
                                   application.
                                  c. manual resin
                                   application.
---------------------------------
5. open molding--shrinkage        a. mechanical       354 lb/ton.
 controlled resins \2\.            resin application. 215 lb/ton.
                                  b. filament         180 lb/ton.
                                   application.
                                  c. manual resin
                                   application.
---------------------------------
6. open molding--gel coat \3\...  a. tooling gel      440 lb/ton.
                                   coating.           267 lb/ton.
                                  b. white/off white  377 lb/ton.
                                   pigmented gel      605 lb/ton.
                                   coating.           854 lb/ton.
                                  c. all other        522 lb/ton.
                                   pigmented gel
                                   coating.
                                  d. CR/HS or high
                                   performance gel
                                   coat.
                                  e. fire retardant
                                   gel coat.
                                  f. clear
                                   production gel
                                   coat.
---------------------------------
7. centrifugal casting--CR/HS...  a. resin            25 lb/ton.\4\
                                   application with   NA--this is
                                   the mold closed,    considered to be
                                   and the mold is     a closed molding
                                   vented during       operation.
                                   spinning and cure. 25 lb/ton.\4\
                                  b. resin            Use the
                                   application with    appropriate open
                                   the mold closed,    molding emission
                                   and the mold is     limit.\5\
                                   not vented during
                                   spinning and cure.
                                  c. resin
                                   application with
                                   the mold open,
                                   and the mold is
                                   vented during
                                   spinning and cure.
                                  d. resin
                                   application with
                                   the mold open,
                                   and the mold is
                                   not vented during
                                   spinning and cure.
---------------------------------
8. centrifugal casting--non-CR/   a. resin            20 lb/ton.\4\
 HS.                               application with   NA--this is
                                   the mold closed,    considered to be
                                   and the mold is     a closed molding
                                   vented during       operation.
                                   spinning and cure. 20 lb/ton.\4\
                                  b. resin            Use the
                                   application with    appropriate open
                                   the mold closed,    molding emission
                                   and mold is not     limit.\5\
                                   vented during the
                                   spinning and cure.
                                  c. resin
                                   application with
                                   the mold open,
                                   and the mold is
                                   vented during
                                   spinning and cure.
                                  d. resin
                                   application with
                                   the mold open,
                                   and the mold is
                                   not vented during
                                   spinning and cure.
---------------------------------
9. pultrusion \6\...............  N/A...............  reduce total
                                                       organic HAP
                                                       emissions by at
                                                       least 60 weight
                                                       percent.
---------------------------------
10. continuous lamination/        N/A...............  reduce total
 casting.                                              organic HAP
                                                       emissions by at
                                                       least 58.5 weight
                                                       percent or not
                                                       exceed a organic
                                                       HAP emissions
                                                       limit of 15.7 lbs
                                                       of organic HAP
                                                       per ton of neat
                                                       resin plus and
                                                       neat gel coat
                                                       plus.
------------------------------------------------------------------------
\1\ Organic HAP emissions limits for open molding and centrifugal
  casting are expressed as lb/ton. You must be at or below these values
  based on a 12-month rolling average.
\2\ This emission limit applies regardless of whether the shrinkage
  controlled resin is used as a production resin or a tooling resin.
\3\ If you only apply gel coat with manual application, for compliance
  purposes treat the gel coat as if it were applied using atomized spray
  guns to determine both emission limits and emission factors. If you
  use multiple application methods and any portion of a specific gel
  coat is applied using nonatomized spray, you may use the nonatomized
  spray gel coat equation to calculate an emission factor for the
  manually applied portion of that gel coat. Otherwise, use the atomized
  spray gel coat application equation to calculate emission factors.
\4\ For compliance purposes, calculate your emission factor using only
  the appropriate centrifugal casting equation in item 2 of Table 1 to
  this subpart, or a site specific emission factor for after the mold is
  closed as discussed in Sec.   63.5796.
\5\ Calculate your emission factor using the appropriate open molding
  covered cure emission factor in item 1 of Table 1 to this subpart, or
  a site specific emission factor as discussed in Sec.   63.5796.
\6\ Pultrusion machines that produce parts that meet the following
  criteria: 1,000 or more reinforcements or the glass equivalent of
  1,000 ends of 113 yield roving or more; and have a cross sectional
  area of 60 square inches or more are not subject to this requirement.
  Their requirement is the work practice of air flow management which is
  described in Table 4 to this subpart.


[[Page 50133]]


0
16. Table 4 to subpart WWWW of part 63 is revised to read as follows:
    As specified in Sec.  63.5805, you must meet the work practice 
standards in the following table that apply to you:

      Table 4 to Subpart WWWW of Part 63.--Work Practice Standards
------------------------------------------------------------------------
            For . . .                          You must . . .
------------------------------------------------------------------------
1. a new or existing closed        uncover, unwrap or expose only one
 molding operation using            charge per mold cycle per
 compression/injection molding.     compression/injection molding
                                    machine. For machines with multiple
                                    molds, one charge means sufficient
                                    material to fill all molds for one
                                    cycle. For machines with robotic
                                    loaders, no more than one charge may
                                    be exposed prior to the loader. For
                                    machines fed by hoppers, sufficient
                                    material may be uncovered to fill
                                    the hopper. Hoppers must be closed
                                    when not adding materials. Materials
                                    may be uncovered to feed to slitting
                                    machines. Materials must be
                                    recovered after slitting.
----------------------------------
2. a new or existing cleaning      not use cleaning solvents that
 operation.                         contain HAP, except that styrene may
                                    be used as a cleaner in closed
                                    systems, and organic HAP containing
                                    cleaners may be used to clean cured
                                    resin from application equipment.
                                    Application equipment includes any
                                    equipment that directly contacts
                                    resin.
----------------------------------
3. a new or existing materials     keep containers that store HAP-
 HAP-containing materials storage   containing materials closed or
 operation.                         covered except during the addition
                                    or removal of materials. Bulk HAP-
                                    containing materials storage tanks
                                    may be vented as necessary for
                                    safety.
----------------------------------
4. an existing or new SMC          close or cover the resin delivery
 manufacturing operation.           system to the doctor box on each SMC
                                    manufacturing machine. The doctor
                                    box itself may be open.
----------------------------------
5. an existing or new SMC          use a nylon containing film to
 manufacturing operation.           enclose SMC.
----------------------------------
6. all mixing or BMC               use mixer covers with no visible gaps
 manufacturing operations\1\.       present in the mixer covers, except
                                    that gaps of up to 1 inch are
                                    permissible around mixer shafts and
                                    any required instrumentation.
----------------------------------
7. all mixing or BMC               close any mixer vents when actual
 manufacturing operations\1\.       mixing is occurring, except that
                                    venting is allowed during addition
                                    of materials, or as necessary prior
                                    to adding materials or opening the
                                    cover for safety. Vents routed to a
                                    95 percent efficient control device
                                    are exempt from this requirement.
----------------------------------
8. all mixing or BMC               keep the mixer covers closed while
 manufacturing operations\1\.       actual mixing is occurring except
                                    when adding materials or changing
                                    covers to the mixing vessels.
----------------------------------
9. a new or existing pultrusion    i. not allow vents from the building
 operation manufacturing parts      ventilation system, or local or
 that meet the following            portable fans to blow directly on or
 criteria: 1,000 or more            across the wet-out area(s),
 reinforcements or the glass       ii. not permit point suction of
 equivalent of 1,000 ends of 113    ambient air in the wet-out area(s)
 yield roving or more; and have a   unless that air is directed to a
 cross sectional area of 60         control device,
 square inches or more that is     iii. use devices such as deflectors,
 not subject to the 95 percent      baffles, and curtains when practical
 organic HAP emission reduction     to reduce air flow velocity across
 requirement.                       the wet-out area(s),
                                   iv. direct any compressed air
                                    exhausts away from resin and wet-out
                                    area(s),
                                   v. convey resin collected from drip-
                                    off pans or other devices to
                                    reservoirs, tanks, or sumps via
                                    covered troughs, pipes, or other
                                    covered conveyance that shields the
                                    resin from the ambient air,
                                   vi. cover all reservoirs, tanks,
                                    sumps, or HAP-containing materials
                                    storage vessels except when they are
                                    being charged or filled, and
                                   vii. cover or shield from ambient air
                                    resin delivery systems to the wet-
                                    out area(s) from reservoirs, tanks,
                                    or sumps where practical.
------------------------------------------------------------------------
\1\ Containers of 5 gallons or less may be open when active mixing is
  taking place, or during periods when they are in process (i.e., they
  are actively being used to apply resin). For polymer casting mixing
  operations, containers with a surface area of 500 square inches or
  less may be open while active mixing is taking place.


0
17. The title and introductory text to Table 5 to subpart WWWW of part 
63 are revised to read as follows:

Table 5 to Subpart WWW of Part 63.--Alternative Organic HAP Emissions 
Limits for Open Molding, Centrifugal Casting, and SMC Manufacturing 
Operations Where the Standards are Based on a 95 Percent Reduction 
Requirement

    As specified in Sec.  63.5805, as an alternative to the 95 percent 
organic HAP emissions reductions requirement, you may meet the 
appropriate organic HAP emissions limits in the following table:
* * * * *

0
18. Table 7 to subpart WWWW of part 63 is revised to read as follows:
    As specified in Sec.  63.5810(d), when electing to use the same 
resin(s) for multiple resin application methods, you may use any 
resin(s) with an organic HAP content less than or equal to the values 
shown in the following table, or any combination of resins whose 
weighted average organic HAP content based on a 12-month rolling 
average is less than or equal to the values shown the following table:

[[Page 50134]]



 Table 7--to Subpart WWWW of Part 63.--Options Allowing Use of the Same
     Resin Across Different Operations That Use the Same Resin Type
------------------------------------------------------------------------
                                      The highest resin
                                       weight is* * *
                                     percent organic HAP
If your facility has the following  content, or weighted
 resin type and application method     average weight        is . . .
               . . .                 percent organic HAP
                                    content, you can use
                                          for . . .
------------------------------------------------------------------------
1. CR/HS resins, centrifugal        a. CR/HS mechanical.    \3\ 48.0
 casting 1 2.
                                    b. CR/HS filament           48.0
                                     application.
                                    c. CR/HS manual.....        48.0
-----------------------------------
2. CR/HS resins, nonatomized        a. CR/HS filament           46.4
 mechanical.                         application.
                                    b. CR/HS manual.....        46.4
-----------------------------------
3. CR/HS resins, filament           CR/HS manual........        42.0
 application.
-----------------------------------
4. non-CR/HS resins, filament       a. non-CR/HS            \3\ 45.0
 application.                        mechanical.
                                    b. non-CR/HS manual.        45.0
                                    c. non-CR/HS                45.0
                                     centrifugal casting
                                     1 2.
-----------------------------------
5. non-CR/HS resins, nonatomized    a. non-CR/HS manual.        38.5
 mechanical.
                                    b. non-CR/HS                38.5
                                     centrifugal casting
                                     1 2.
6. non-CR/HS resins, centrifugal    non-CR/HS manual....        37.5
 casting 1 2.
7. tooling resins, nonatomized      tooling manual......        91.4
 mechanical.
8. tooling resins, manual.........  tooling atomized            45.9
                                     mechanical.
------------------------------------------------------------------------
\1\ If the centrifugal casting operation blows heated air through the
  molds, then 95 percent capture and control must be used if the
  facility wishes to use this compliance option.
\2\ If the centrifugal casting molds are not vented, the facility may
  treat the centrifugal casting operations as if they were vented if
  they wish to use this compliance option.
\3\ Nonatomized mechanical application must be used.


0
19. Table 8 to subpart WWWW of part 63 is revised to read as follows:
    As specified in Sec.  63.5860(a), you must demonstrate initial 
compliance with organic HAP emissions limits as specified in the 
following table:

Table 8 to Subpart WWWW of Part 63.--Initial Compliance With Organic HAP
                            Emissions Limits
------------------------------------------------------------------------
                                  That must meet the
                                   following organic       You have
            For . . .                HAP emissions       demonstrated
                                      limit . . .     initial compliance
                                                            if . . .
------------------------------------------------------------------------
1. open molding and centrifugal   a. an organic HAP   i. you have met
 casting operations.               emissions limit     the appropriate
                                   shown in Tables 3   organic HAP
                                   or 5 to this        emissions limits
                                   subpart, or an      for these
                                   organic HAP         operations as
                                   content limit       calculated using
                                   shown in Table 7    the procedures in
                                   to this subpart.    Sec.   63.5810 on
                                                       a 12-month
                                                       rolling average 1
                                                       year after the
                                                       appropriate
                                                       compliance date,
                                                       and/or
                                                      ii. you
                                                       demonstrate that
                                                       any individual
                                                       resins or gel
                                                       coats not
                                                       included in (i)
                                                       above, as
                                                       applied, meet
                                                       their applicable
                                                       emission limits,
                                                       or
                                                      iii. you
                                                       demonstrate using
                                                       the appropriate
                                                       values in Table 7
                                                       to this subpart
                                                       that the weighted
                                                       average of all
                                                       resins and gel
                                                       coats for each
                                                       resin type and
                                                       application
                                                       method meet the
                                                       appropriate
                                                       organic HAP
                                                       contents.
---------------------------------
2. open molding centrifugal       a. reduce total     total organic HAP
 casting, continuous lamination/   organic HAP         emissions, based
 casting, SMC and BMC              emissions by at     on the results of
 manufacturing, and mixing         least 95 percent    the capture
 operations.                       by weight.          efficiency and
                                                       destruction
                                                       efficiency
                                                       testing specified
                                                       in Table 6 to
                                                       this subpart, are
                                                       reduced by at
                                                       least 95 percent
                                                       by weight.
---------------------------------
3. continuous lamination/casting  a. reduce total     total organic HAP
 operations.                       organic HAP         emissions, based
                                   emissions, by at    on the results of
                                   least 58.5 weight   the capture
                                   percent, or         efficiency and
                                                       destruction
                                                       efficiency in
                                                       Table 6 to this
                                                       subpart and the
                                                       calculation
                                                       procedures
                                                       specified in Sec.
                                                        Sec.   63.5865
                                                       through 63.5890,
                                                       are reduced by at
                                                       least 58.5
                                                       percent by
                                                       weight.
                                  b. not exceed an    total organic HAP
                                   organic HAP         emissions, based
                                   emissions limit     on the results of
                                   of 15.7 lbs of      the capture
                                   organic HAP per     efficiency and
                                   ton of neat resin   destruction
                                   plus and neat gel   efficiency
                                   coat plus.          testing specified
                                                       in Table 6 to
                                                       this subpart and
                                                       the calculation
                                                       procedures
                                                       specified in Sec.
                                                        Sec.   63.5865
                                                       through 63.5890,
                                                       do not exceed
                                                       15.7 lbs of
                                                       organic HAP per
                                                       ton of neat resin
                                                       plus and neat gel
                                                       coat plus.
---------------------------------

[[Page 50135]]

 
4. continuous lamination/casting  a. reduce total     total organic HAP
 operations.                       organic HAP         emissions, based
                                   emissions by at     on the results of
                                   least 95 weight     the capture
                                   percent or          efficiency and
                                                       destruction
                                                       efficiency
                                                       testing specified
                                                       in Table 6 to
                                                       this subpart and
                                                       the calculation
                                                       procedures
                                                       specified in Sec.
                                                        Sec.   63.5865
                                                       through 63.5890,
                                                       are reduced by at
                                                       least 95 percent
                                                       by weight
                                  b. not exceed an    total organic HAP
                                   organic HAP         emissions, based
                                   emissions limit     on the results of
                                   of 1.47 lbs of      the capture
                                   organic HAP per     efficiency and
                                   ton of neat resin   destruction
                                   plus and neat gel   efficiency
                                   coat plus.          testing specified
                                                       in Table 6 and
                                                       the calculation
                                                       procedures
                                                       specified in Sec.
                                                        Sec.   63.5865
                                                       through 63.5890,
                                                       do not exceed
                                                       1.47 lbs of
                                                       organic HAP of
                                                       per ton of neat
                                                       resin plus and
                                                       neat gel coat
                                                       plus.
---------------------------------
5. pultrusion operations........  a. reduce total     i. total organic
                                   organic HAP         HAP emissions,
                                   emissions by at     based on the
                                   least 60 percent    results of the
                                   by weight.          capture
                                                       efficiency and
                                                       add-on control
                                                       device
                                                       destruction
                                                       efficiency
                                                       testing specified
                                                       in Table 6 to
                                                       this subpart, are
                                                       reduced by at
                                                       least 60 percent
                                                       by weight, and/or
                                                      ii. as part of the
                                                       notification of
                                                       initial
                                                       compliance
                                                       status, the owner/
                                                       operator submits
                                                       a certified
                                                       statement that
                                                       all pultrusion
                                                       lines not
                                                       controlled with
                                                       an add-on control
                                                       device, but for
                                                       which an emission
                                                       reduction is
                                                       being claimed,
                                                       are using direct
                                                       die injection,
                                                       and/or wet-area
                                                       enclosures that
                                                       meet the criteria
                                                       of Sec.
                                                       63.5830.
---------------------------------
6. pultrusion operations........  a. reduce total     i. total organic
                                   organic HAP         HAP emissions,
                                   emissions by at     based on the
                                   least 95 percent    results of the
                                   by weight.          capture
                                                       efficiency and
                                                       add-on control
                                                       device
                                                       destruction
                                                       efficiency
                                                       testing specified
                                                       in Table 6 to
                                                       this subpart, are
                                                       reduced by at
                                                       least 95 percent
                                                       by weight.
------------------------------------------------------------------------


0
20. Table 9 to subpart WWWW of part 63 is revised to read as follows:
    As specified in Sec.  63.5860(a), you must demonstrate initial 
compliance with work practice standards as specified in the following 
table:

    Table 9 To Subpart WWWW of Part 63.--Initial Compliance With Work
                           Practice Standards
------------------------------------------------------------------------
                               That must meet the         You have
          For . . .            following standards  demonstrated initial
                                      . . .          compliance if . . .
------------------------------------------------------------------------
1. a new or existing closed   uncover, unwrap or    the owner or
 molding operation using       expose only one       operator submits a
 compression/injection         charge per mold       certified statement
 molding.                      cycle per             in the notice of
                               compression/          compliance status
                               injection molding     that only one
                               machine. For          charge is
                               machines with         uncovered,
                               multiple molds, one   unwrapped, or
                               charge means          exposed per mold
                               sufficient material   cycle per
                               to fill all molds     compression/
                               for one cycle. For    injection molding
                               machines with         machine, or prior
                               robotic loaders, no   to the loader,
                               more than one         hoppers are closed
                               charge may be         except when adding
                               exposed prior to      materials, and
                               the loader. For       materials are
                               machines fed by       recovered after
                               hoppers, sufficient   slitting.
                               material may be
                               uncovered to fill
                               the hopper. Hoppers
                               must be closed when
                               not adding
                               materials.
                               Materials may be
                               uncovered to feed
                               to slitting
                               machines. Materials
                               must be recovered
                               after slitting.
-----------------------------
2. a new or existing          not use cleaning      the owner or
 cleaning operation.           solvents that         operator submits a
                               contain HAP, except   certified statement
                               that styrene may be   in the notice of
                               used in closed        compliance status
                               systems, and          that all cleaning
                               organic HAP           materials, except
                               containing            styrene contained
                               materials may be      in closed systems,
                               used to clean cured   or materials used
                               resin from            to clean cured
                               application           resin from
                               equipment.            application
                               Application           equipment, contain
                               equipment includes    no HAP.
                               any equipment that
                               directly contacts
                               resin between
                               storage and
                               applying resin to
                               the mold or
                               reinforcement.
-----------------------------

[[Page 50136]]

 
3. a new or existing          keep containers that  the owner or
 materials HAP-containing      store HAP-            operator submits a
 materials storage operation.  containing            certified statement
                               materials closed or   in the notice of
                               covered except        compliance status
                               during the addition   that all HAP-
                               or removal of         containing storage
                               materials. Bulk HAP-  containers are kept
                               containing            closed or covered
                               materials storage     except when adding
                               tanks may be vented   or removing
                               as necessary for      materials, and that
                               safety.               any bulk storage
                                                     tanks are vented
                                                     only as necessary
                                                     for safety.
-----------------------------
4. an existing or new SMC     close or cover the    the owner or
 manufacturing operation.      resin delivery        operator submits a
                               system to the         certified statement
                               doctor box on each    in the notice of
                               SMC manufacturing     compliance status
                               machine. The doctor   that the resin
                               box itself may be     delivery system is
                               open.                 closed or covered.
-----------------------------
5. an existing or new SMC     use a nylon           the owner or
 manufacturing operation.      containing film to    operator submits a
                               enclose SMC.          certified statement
                                                     in the notice of
                                                     compliance status
                                                     that a nylon-
                                                     containing film is
                                                     used to enclose
                                                     SMC.
-----------------------------
6. an existing or new mixing  use mixer covers      the owner or
 or BMC manufacturing          with no visible       operator submits a
 operation.                    gaps present in the   certified statement
                               mixer covers,         in the notice of
                               except that gaps of   compliance status
                               up to 1 inch are      that mixer covers
                               permissible around    are closed during
                               mixer shafts and      mixing except when
                               any required          adding materials to
                               instrumentation.      the mixers, and
                                                     that gaps around
                                                     mixer shafts and
                                                     required
                                                     instrumentation are
                                                     less than 1 inch.
-----------------------------
7. an existing mixing or BMC  not actively vent     the owner or
 manufacturing operation.      mixers to the         operator submits a
                               atmosphere while      certified statement
                               the mixing agitator   in the notice of
                               is turning, except    compliance status
                               that venting is       that mixers are not
                               allowed during        actively vented to
                               addition of           the atmosphere when
                               materials, or as      the agitator is
                               necessary prior to    turning except when
                               adding materials      adding materials or
                               for safety.           as necessary for
                                                     safety.
-----------------------------
8. a new or existing mixing   keep the mixer        the owner or
 or BMC manufacturing          covers closed         operator submits a
 operation.                    during mixing         certified statement
                               except when adding    in the notice of
                               materials to the      compliance status
                               mixing vessels.       that mixers closed
                                                     except when adding
                                                     materials to the
                                                     mixing vessels.
-----------------------------
9. a new or existing          i. Not allow vents    the owner or
 pultrusion operation          from the building     operator submits a
 manufacturing parts that      ventilation system,   certified statement
 meet the following            or local or           in the notice of
 criteria: 1,000 or more       portable fans to      compliance status
 reinforcements or the glass   blow directly on or   that they have
 equivalent of 1,000 ends of   across the wet-out    complied with all
 113 yield roving or more;     area(s),              the requirements
 and have a cross sectional   ii. not permit point   listed in 9.i
 area of 60 square inches or   suction of ambient    through 9.vii.
 more that is not subject to   air in the wet-out
 the 95 percent organic HAP    area(s) unless that
 emission reduction            air is directed to
 requirement.                  a control device,.
                              iii. use devices
                               such as deflectors,
                               baffles, and
                               curtains when
                               practical to reduce
                               air flow velocity
                               across the wet-out
                               area(s),.
                              iv. direct any
                               compressed air
                               exhausts away from
                               resin and wet-out
                               area(s),.
                              v. convey resin
                               collected from drip-
                               off pans or other
                               devices to
                               reservoirs, tanks,
                               or sumps via
                               covered troughs,
                               pipes, or other
                               covered conveyance
                               that shields the
                               resin from the
                               ambient air,.
                              vi. clover all
                               reservoirs, tanks,
                               sumps, or HAP-
                               containing
                               materials storage
                               vessels except when
                               they are being
                               charged or filled,
                               and.
                              vii. cover or shield
                               from ambient air
                               resin delivery
                               systems to the wet-
                               out area(s) from
                               reservoirs, tanks,
                               or sumps where
                               practical..
------------------------------------------------------------------------

[FR Doc. 05-16701 Filed 8-24-05; 8:45 am]
BILLING CODE 6560-50-P


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