with ``compliance
                                 date specified in
                                 Sec.   63.11875'' to
                                 clarify compliance
                                 dates.
40 CFR 63.11900(d)............  Replace ``startup date  40 CFR
                                 of the affected         63.11142(f)(4).
                                 source or the
                                 effective date of
                                 publication of the
                                 final rule in the
                                 Federal Register,
                                 whichever is later,''
                                 with ``compliance
                                 date specified in
                                 Sec.   63.11875'' to
                                 clarify compliance
                                 dates.
40 CFR 63.11920(a)(3)(iii)....  Change ``Appendix A''   40 CFR
                                 to ``Appendix B'' to    63.11142(f)(7).
                                 correct typographical
                                 error.
40 CFR 63.11920(g)............  Replace ``repair        40 CFR
                                 action level'' with     63.11142(f)(7).
                                 ``delay of repair
                                 action level'' in two
                                 instances to clarify
                                 the requirement.
40 CFR 63.11920(h)(4)(ii).....  Change the unit of      40 CFR
                                 measurement for         63.11142(f)(7).
                                 ``Ddelay'' from
                                 ``days'' to ``hours''
                                 to correct
                                 typographical error.
40 CFR 63.11925(b)............  Replace ``Each batch    40 CFR
                                 process vent,           63.11142(f)(8).
                                 continuous process
                                 vent and
                                 miscellaneous vent,''
                                 with ``Each process
                                 vent as defined in
                                 Sec.   63.12005,'' to
                                 clarify the
                                 requirement applies
                                 to all process vents.
40 CFR 63.11925(c)(1).........  Remove the phrase       40 CFR
                                 ``upon promulgation     63.11142(f)(8).
                                 of a performance
                                 specification for
                                 hydrogen chloride
                                 CEMS,'' because
                                 performance
                                 specification for
                                 hydrogen chloride
                                 continuous emission
                                 monitoring systems
                                 (CEMS) has been
                                 promulgated at 40 CFR
                                 part 60, appendix B,
                                 performance
                                 specification 18.
40 CFR 63.11925(d)(2) and (3),  Replace ``For each      40 CFR
 and (e)(2).                     CEMS and CPMS           63.11142(f)(8).
                                 required or that you
                                 elect . . .'' with
                                 ``For each CPMS
                                 required or CEMS that
                                 you elect . . .'' to
                                 clarify CEMS is an
                                 option.
40 CFR 63.11925(e)(2).........  Refer to 40 CFR         40 CFR
                                 63.11935 in its         63.11142(f)(8).
                                 entirety instead of
                                 only paragraphs (b)
                                 and (c) to correct
                                 typographical error.
40 CFR 63.11925(f)............  Add ``Toxic             40 CFR
                                 equivalency limit''     63.11142(f)(8).
                                 to clarify title of
                                 paragraph.
40 CFR 63.11925(g)............  Remove ``continuous     40 CFR
                                 process vent,           63.11142(f)(8).
                                 miscellaneous vent
                                 and batch'' to
                                 clarify the
                                 requirement applies
                                 to all process vents.
40 CFR                          Remove ``(CHAP)'' to    40 CFR
 63.11925(g)(2)(iii)(B)(2)(ii).  correct typographical   63.11142(f)(8).
                                 error and clarify
                                 vinyl chloride is
                                 excluded for purposes
                                 of compliance with
                                 the paragraph.
40 CFR 63.11935(b)(5).........  Remove the sentence     40 CFR
                                 ``CEMS must record      63.11142(f)(10)
                                 data at least once      .
                                 every 15 minutes.''
                                 because it is
                                 redundant with the
                                 requirement in 40 CFR
                                 63.11935(b)(2).
40 CFR 63.11935(b)(6)(i)......  Clarify the             40 CFR
                                 promulgated             63.11142(f)(10)
                                 performance             .
                                 specification for HCl
                                 CEMS is 40 CFR part
                                 60, appendix B,
                                 performance
                                 specification 18 as
                                 well as requirements
                                 of 40 CFR part 60,
                                 appendix F, procedure
                                 6.
40 CFR 63.11935(b)(7)(i)......  Replace ``continuous    40 CFR
                                 emissions monitoring    63.11142(f)(10)
                                 system'' with the       .
                                 proper acronym
                                 ``CEMS.''.
40 CFR 63.11935(b)(7)(ii).....  Replace ``continuous    40 CFR
                                 emissions monitoring    63.11142(f)(10)
                                 system'' with the       .
                                 proper acronym
                                 ``CEMS.''.
40 CFR 63.11935(d)(2)(iii)....  Replace ``of'' with     40 CFR
                                 ``explaining'' to       63.11142(f)(10)
                                 clarify requirement.    .
40 CFR 63.11935(d)(3).........  Replace ``of'' with     40 CFR
                                 ``explaining'' to       63.11142(f)(10)
                                 clarify requirement.    .
40 CFR 63.11940(b)(3)(ii).....  Replace ``problems''    40 CFR
                                 with ``any of the       63.11142(f)(11)
                                 aforementioned          .
                                 conditions'' to
                                 clarify requirement.
                                Replace first instance
                                 of ``like or better
                                 kind and quality as''
                                 with ``like type or
                                 manufacturer as the
                                 old catalyst or is
                                 not as efficient as''
                                 to clarify
                                 requirement.
                                Replace second
                                 instance of ``like or
                                 better kind and
                                 quality as'' with
                                 ``like type or
                                 manufacturer as the
                                 old catalyst or is as
                                 efficient as or more
                                 efficient than'' to
                                 clarify requirement.
40 CFR 63.11940(c)(2)(ii).....  Add ``(100.4 degrees    40 CFR
                                 Fahrenheit)'' to        63.11142(f)(11)
                                 clarify conversion of   .
                                 degrees Celsius in
                                 degrees Fahrenheit.

40 CFR 63.11940(d)(1).........  Include ``and,'' and    40 CFR
                                 replace ``mass'' with   63.11142(f)(11)
                                 ``mass flow'' in        .
                                 first sentence to
                                 clarify requirement
                                 and remove the last
                                 sentence because it
                                 is redundant with the
                                 first sentence.
40 CFR 63.11945(b)............  Add requirement to      40 CFR
                                 record the process      63.11142(f)(12)
                                 information that is     .
                                 necessary to document
                                 operating conditions
                                 during the test.
40 CFR 63.11955(d)(1).........  Clarify that each       40 CFR
                                 gasholder must be       63.11142(f)(14)
                                 vented back into the    .
                                 process for reuse or
                                 routed to a closed
                                 vent system and
                                 control device
                                 meeting the
                                 requirements of 40
                                 CFR 63.11925 through
                                 63.11950. Most
                                 gasholders return
                                 recovered gas back to
                                 an enclosed process
                                 for reuse in the
                                 manufacturing process.
40 CFR 63.11980(a)(1).........  Replace ``maximum       40 CFR
                                 operating               63.11142(f)(17)
                                 conditions'' with       .
                                 ``maximum
                                 representative
                                 operating
                                 conditions'' to
                                 correct typographical
                                 error.
40 CFR 63.11985(b)(6).........  Revise reference from   40 CFR
                                 40 CFR 63.11990(j) to   63.11142(f)(18)
                                 40 CFR 63.11990(j)(2).  .
40 CFR 63.11985(b)(8)(ii).....  Remove entire           40 CFR
                                 requirement to          63.11142(f)(18)
                                 correct typographical   .
                                 error.
40 CFR 63.11985(b)(10)........  Remove ``but'' to       40 CFR
                                 correct typographical   63.11142(f)(18)
                                 error.                  .
                                Change ``Sec.  Sec.
                                 63.11910(c)(4)'' to
                                 ``Sec.
                                 63.11910(c)(3)'' to
                                 correct typographical
                                 error..
40 CFR 63.11985(c)(1).........  Add ``storage vessel''  40 CFR
                                 to clarify the type     63.11142(f)(18)
                                 of equipment            .
                                 inspection that a
                                 delegated agency may
                                 waive the requirement
                                 for notifications.
40 CFR 63.11985(c)(8).........  Add comma to correct    40 CFR
                                 typographical error.    63.11142(f)(18)
                                                         .
40 CFR 63.11985(c)(9)(i) and    Replace entire          40 CFR
 (ii).                           paragraphs with         63.11142(f)(18)
                                 standardized            .
                                 performance test
                                 reporting language.
40 CFR 63.11990(i)(5).........  Remove entire           40 CFR
                                 requirement to          63.11142(f)(19)
                                 correct typographical   .
                                 error.
40 CFR 63.12005...............  Remove definition of    40 CFR
                                 ``Container,''          63.11144(b).
                                 ``Corrective action
                                 plan,'' ``Operating
                                 day,'' ``Root cause
                                 analysis,''
                                 ``Solution process,''
                                 and ``Unloading
                                 operations'' because
                                 the terms are not
                                 used in the rule.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Batch process         63.11144(b).
                                 vent'' and
                                 ``Continuous process
                                 vent'' to add ``be''
                                 between ``to'' and
                                 ``routed'' to correct
                                 typographical error.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Dispersion            63.11144(b).
                                 process'' to mean a
                                 process for producing
                                 polyvinyl chloride
                                 resin using either
                                 emulsion or
                                 microsuspension.
                                 Emulsion
                                 polymerization uses
                                 water soluble
                                 initiators and is
                                 distinguished by
                                 metering in
                                 surfactants as the
                                 reaction progresses.
                                 In microsuspension
                                 polymerization,
                                 homogenizers are
                                 first mixed with a
                                 monomer outside of
                                 the polymerization
                                 reactor and oil
                                 soluble initiators
                                 are then added before
                                 charging the reactor.
                                 These two
                                 polymerization
                                 techniques produce
                                 fine particles,
                                 typically less than
                                 10 microns, with
                                 little or no
                                 porosity. Emulsifier
                                 levels vary but
                                 agitation is very
                                 mild compared to
                                 other PVC
                                 polymerization
                                 processes. The final
                                 product is dried to
                                 powder form.
                                This change is being
                                 proposed to keep
                                 ``dispersion'' as a
                                 broad subcategory, as
                                 some facilities make
                                 resins using both
                                 types of processes.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``First attempt at      63.11144(b).
                                 repair'' to clarify
                                 that monitoring as
                                 specified in Sec.
                                 63.1023(b) and (c)
                                 may be applicable.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Polyvinyl chloride    63.11144(b).
                                 and copolymers
                                 production process
                                 unit or PVCPU'' to
                                 clarify that finished
                                 resin product is
                                 stored in a ``vessel
                                 or storage silo'' by
                                 removing the word
                                 ``tank.''.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Polyvinyl chloride    63.11144(b).
                                 copolymer'' to
                                 clarify that a
                                 copolymer is
                                 comprised of one or
                                 more monomers and
                                 also distinguishes
                                 these monomers from
                                 additives used for
                                 stabilization and/or
                                 particle size
                                 control. Also, remove
                                 the word ``emulsion''
                                 and ``solution'' from
                                 the definition and
                                 clarify each process.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Polyvinyl chloride    63.11144(b).
                                 homopolymer'' to
                                 remove the word
                                 ``emulsion'' from the
                                 definition and
                                 clarify each process.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Process component''   63.11144(b).
                                 to replace ``units
                                 operations'' with
                                 ``unit operation'' to
                                 correct typographical
                                 error.
                                Revise definition of
                                 ``Process component''
                                 to clarify that
                                 ``Process components
                                 include equipment,
                                 pressure vessels,
                                 process condensers,
                                 process tanks,
                                 recovery devices, and
                                 resin strippers, as
                                 defined in this
                                 section.''.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Process condenser''   63.11144(b).
                                 to clarify that can
                                 apply to batch or
                                 continuous processes.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Product'' to mean a   63.11144(b).
                                 polymer produced
                                 using vinyl chloride
                                 monomer and varying
                                 in additives (e.g.,
                                 initiators,
                                 terminators, etc.);
                                 catalysts; or in the
                                 relative proportions
                                 of vinyl chloride
                                 monomer with one or
                                 more other monomers,
                                 and that is
                                 manufactured by a
                                 process unit. With
                                 respect to polymers,
                                 more than one recipe
                                 may be used to
                                 produce the same
                                 product, and there
                                 can be more than one
                                 grade of a product.
                                 Product also means a
                                 chemical that is not
                                 a polymer, which is
                                 manufactured by a
                                 process unit. By-
                                 products, isolated
                                 intermediates,
                                 impurities, wastes,
                                 and trace
                                 contaminants are not
                                 considered products.
                                This change is being
                                 proposed to be
                                 consistent with the
                                 definitions of
                                 ``Polyvinyl chloride
                                 copolymer'' and
                                 ``Polyvinyl chloride
                                 homopolymer''.
40 CFR 63.12005...............  Revise definition of    40 CFR
                                 ``Repaired'' to         63.11144(b).
                                 clarify that
                                 inspections from
                                 another subpart may
                                 be applicable.
40 CFR 63.12005...............  Remove the word         40 CFR
                                 ``emulsion'' and        63.11144(b).
                                 ``solution
                                 processes'' from the
                                 definition of ``Type
                                 of resin'' because
                                 the term is not used
                                 in the rule.

Table 5.......................  Revise flow to/from     40 CFR
                                 the control device of   63.11142(f)(2),
                                 any control device to   (8), (10), and
                                 replace ``Flow to/      (18).
                                 from the control
                                 device'' to
                                 ``Presence or absence
                                 of flow to/for the
                                 control device if
                                 flow could be
                                 intermittent,'' ``N/
                                 A'' with ``Indication
                                 of absence of flow--
                                 note that absence of
                                 flow can be
                                 determined when
                                 process is not
                                 operating using
                                 simulated flow'',
                                 ``Continuous'' with
                                 ``Episodic,'' ``N/A
                                 to ``Date and time
                                 when flow stops
                                 during process
                                 operation and when
                                 flow begins after
                                 stopping during
                                 process operation,''
                                 and ``Date and time
                                 of flow start and
                                 stop'' to ``Time
                                 period between flow
                                 stop and start'' to
                                 clarify what
                                 operating limit to
                                 establish during the
                                 initial performance
                                 test, minimum data
                                 recording frequency,
                                 and data averaging
                                 period for
                                 compliance,
                                 respectively.
Table 5.......................  Revise regeneration     40 CFR
                                 stream flow to          63.11142(f)(2),
                                 regenerative adsorber   (8), (10), and
                                 to replace ``N/A''      (18).
                                 with ``Every 15
                                 minutes'' to clarify
                                 minimum data
                                 recording frequency.
Table 5.......................  Revise adsorber bed     40 CFR
                                 temperature, minimum    63.11142(f)(2),
                                 temperature of          (8), (10), and
                                 regenerative adsorber   (18).
                                 to replace ``N/A''
                                 with ``Every 15
                                 minutes during
                                 regeneration cycle''
                                 to clarify minimum
                                 data recording
                                 frequency.
Table 5.......................  Replace ``vacuum and    40 CFR
                                 duratio of              63.11142(f)(2),
                                 regeneration'' with     (8), (10), and
                                 ``vacuum and duration   (18).
                                 of regeneration'' to
                                 correct typographical
                                 error.
                                Revise vacuum and
                                 duration of
                                 regeneration of
                                 regenerative adsorber
                                 to replace ``N/A''
                                 with ``Every 15
                                 minutes during
                                 regeneration cycle''
                                 to clarify minimum
                                 data recording
                                 frequency.
Table 5.......................  Revise regeneration     40 CFR
                                 frequency of            63.11144(f)(2),
                                 regenerative adsorber   (8), (10), and
                                 to replace ``N/A''      (18).
                                 with ``Date and time
                                 of regeneration start
                                 and stop'' to clarify
                                 minimum data
                                 recording frequency.
Table 5.......................  Revise adsorber         40 CFR
                                 operation valve         63.11142(f)(2),
                                 sequencing and cycle    (8), (10), and
                                 time of regenerative    (18).
                                 adsorber to replace
                                 ``N/A'' with
                                 ``Daily'' to clarify
                                 data averaging period
                                 for compliance.
Table 5.......................  Revise average          40 CFR
                                 adsorber bed life of    63.11142(f)(2),
                                 non-regenerative        (8), (10), and
                                 adsorber to replace     (18).
                                 ``N/A'' with
                                 ``Adsorber bed change-
                                 out time [N/A for
                                 initial performance
                                 test],'' ``N/A'' with
                                 ``Outlet VOC
                                 concentration,'' and
                                 ``N/A'' with
                                 ``Average time for
                                 three adsorber bed
                                 change-outs'' to
                                 clarify what
                                 operating limit to
                                 establish, minimum
                                 data recording
                                 frequency, and data
                                 averaging period for
                                 compliance,
                                 respectively.
                                Replace ``Daily until
                                 breakthrough for 3
                                 absorber bed change-
                                 outs'' with ``Daily
                                 until breakthrough
                                 for three absorber
                                 bed change-outs'' to
                                 correct typographical
                                 error.
Table 5.......................  Revise Outlet VOC       40 CFR
                                 concentration of the    63.11142(f)(2),
                                 first adsorber bed in   (8), (10), and
                                 series of non-          (18).
                                 regenerative adsorber
                                 to replace ``N/A''
                                 with ``Outlet VOC
                                 concentration'' to
                                 clarify data
                                 recording frequency.
------------------------------------------------------------------------
\1\ Several of the proposed revisions described in this table for 40 CFR
  part 63, subpart HHHHHHH, are also being proposed for 40 CFR part 63,
  subpart DDDDDD, because the 40 CFR part 63, subpart HHHHHHH provision,
  is referenced in the 40 CFR part 63, subpart DDDDDD provision,
  identified in this column.

IV. Summary of Cost, Environmental, and Economic Impacts

    We estimate that the proposed amendments will result in HAP
emissions reductions of 34 tpy with an overall total capital savings of
$0.033 million and an associated total annualized cost of $0.39
million. These estimated emission reductions as well as the increase in
annualized costs are a result of the proposed revisions to emission
limits in the 2012 major source rule for process vents and process
wastewater (there is additional operations and maintenance costs of the
control equipment and steam strippers that are related to the proposed
emission limits). The estimated cost savings are a result of our
proposal to eliminate the process wastewater TOHAP emission limit in
the 2012 major source rule (there is a decrease in initial and annual
costs of testing and monitoring). The details of the cost analyses and
emissions reductions estimates are provided in the memorandum,
Technical Analysis and Documentation to Support EPA's Reconsideration
of 40 CFR part 63 Subpart HHHHHHH National Emission Standards for the
Polyvinyl Chloride and Copolymers (PVC) Production Source Category,
which is available in the docket for this rulemaking. Estimates of the
economic impacts for the proposal are estimated in terms of the
annualized cost of compliance as a percent of the revenues for the six
ultimate parent owners of the 14 facilities expected to incur impacts
as a result of this proposal. No ultimate parent owner is expected to
incur annualized cost of compliance of more than 0.003 percent of their
revenues. The median cost to revenue impact is about 0.001 percent. One
ultimate parent company is expected to experience a savings in
compliance costs associated with the proposal. For more information on
these economic impacts, refer to the Economic Impact Analysis for the
NESHAP for Polyvinyl Chloride and Copolymers Production:
Reconsideration Proposal, which is in the docket for this rulemaking.

V. Statutory and Executive Order Reviews

    Additional information about these statutes and Executive orders
can be found at https://www.epa.gov/laws-regulations/laws-and-executive-orders.

A. Executive Order 12866: Regulatory Planning and Review and Executive
Order 13563: Improving Regulation and Regulatory Review

    This action is not a significant regulatory action and was,
therefore, not submitted to the OMB for review.

B. Executive Order 13771: Reducing Regulations and Controlling
Regulatory Costs

    This action is not expected to be an Executive Order 13771
regulatory action because this action is not significant under
Executive Order 12866.

C. Paperwork Reduction Act (PRA)

    The information collection activities in these proposed rules have
been submitted for approval to OMB under the PRA, as discussed for each
rule

covered by this action in sections V.C.1 and 2 of this preamble.
1. PVC Major Source NESHAP
    The ICR document that the EPA prepared has been assigned EPA ICR
number 2432.05. You can find a copy of the ICR in the docket for this
rule (Docket ID No. EPA-HQ-OAR-2002-0037), and it is briefly summarized
here.
    The EPA is proposing amendments to 40 CFR part 63, subpart HHHHHHH,
to address petitions for reconsideration as described in section III of
this preamble. This ICR documents the recordkeeping and reporting
requirements and incremental burden imposed by the proposed amendments
only. In summary, there is a decrease in the burden hours and cost in
this ICR due to the elimination of wastewater TOHAP testing
requirements that are associated with our proposed revisions to
emission limits for process wastewater.
    Respondents/affected entities: Owners or operators of PVC
production major source facilities.
    Respondent's obligation to respond: Mandatory (40 CFR part 63,
subpart HHHHHHH).
    Estimated number of respondents: 14 (total).
    Frequency of response: Semiannual and annual.
    Total estimated burden: Reduction of 2,170 hours (per year). Burden
is defined at 5 CFR 1320.3(b).
    Total estimated cost: Savings of $388,000 (per year), which
includes a savings of $134,000 annualized capital or operation and
maintenance costs.
2. PVC Area Source NESHAP
    The ICR document that the EPA prepared has been assigned EPA ICR
number 2454.04. You can find a copy of the ICR in the docket for this
rule (Docket ID No. EPA-HQ-OAR-2002-0037), and it is briefly summarized
here.
    The EPA is proposing amendments to 40 CFR part 63, subpart DDDDDD,
to address petitions for reconsideration as described in section III of
this preamble. This ICR documents the recordkeeping and reporting
requirements and incremental burden imposed by the proposed amendments
only. In summary, there is a decrease in the burden hours and cost in
this ICR due to the elimination of wastewater TOHAP testing
requirements that are associated with our proposed revisions to
emission limits for process wastewater.
    Respondents/affected entities: Owners or operators of PVC
production area source facilities.
    Respondent's obligation to respond: Mandatory (40 CFR part 63,
subpart DDDDDD).
    Estimated number of respondents: Three (total).
    Frequency of response: Semiannual and annual.
    Total estimated burden: Reduction of 340 hours (per year). Burden
is defined at 5 CFR 1320.3(b).
    Total estimated cost: Savings of $61,000 (per year), which includes
a savings of $21,000 annualized capital or operation and maintenance
costs.
    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 the
EPA's regulations in 40 CFR are listed in 40 CFR part 9.
    Submit your comments on the Agency's need for this information, the
accuracy of the provided burden estimates, and any suggested methods
for minimizing respondent burden to the EPA using the docket identified
at the beginning of this rule. You may also send your ICR-related
comments to OMB's Office of Information and Regulatory Affairs via
email to<EMAIL_ADDRESS>Attention: Desk Officer for the
EPA. Since OMB is required to make a decision concerning the ICR
between 30 and 60 days after receipt, OMB must receive comments no
later than December 9, 2020. The EPA will respond to any ICR-related
comments in the final rule.

D. Regulatory Flexibility Act (RFA)

    I certify that this action will not have a significant economic
impact on a substantial number of small entities under the RFA. This
action will not impose any requirements on small entities. There are no
small entities among those affected by this proposal.

E. Unfunded Mandates Reform Act (UMRA)

    This action does not contain an unfunded mandate of $100 million or
more as described in UMRA, 2 U.S.C. 1531-1538, and does not
significantly or uniquely affect small governments. While this action
creates an enforceable duty on the private sector, the annual cost does
not exceed $100 million or more.

F. Executive Order 13132: Federalism

    This action does not have federalism implications. It 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.

G. Executive Order 13175: Consultation and Coordination With Indian
Tribal Governments

    This action does not have tribal implications as specified in
Executive Order 13175. It will not have substantial new 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, as
specified in Executive Order 13175. Thus, Executive Order 13175 does
not apply to this action.

H. Executive Order 13045: Protection of Children From Environmental
Health Risks and Safety Risks

    The EPA interprets Executive Order 13045 as applying to those
regulatory actions that concern environmental health or safety risks
that the EPA has reason to believe may disproportionately affect
children, per the definition of ``covered regulatory action'' in
section 2-202 of the Executive order. This action is not subject to
Executive Order 13045 because it does not concern an environmental
health risk or safety risk.

I. Executive Order 13211: Actions Concerning Regulations That
Significantly Affect Energy Supply, Distribution, or Use

    This action is not subject to Executive Order 13211, because it is
not a significant regulatory action under Executive Order 12866.

J. National Technology Transfer and Advancement Act (NTTAA) and 1 CFR
Part 51

    This action does not involve any new technical standards from those
contained in the 2012 final rules. Therefore, the EPA did not consider
the use of any voluntary consensus standards.
    The SW-846 methods included in Sec.  63.11960 were previously
approved for incorporation in that section and no changes are proposed.

K. Executive Order 12898: Federal Actions To Address Environmental
Justice in Minority Populations and Low-Income Populations

    The EPA believes that this action does not have disproportionately
high and adverse human health or environmental effects on minority
populations, low-income populations, and/or indigenous peoples, as
specified in Executive Order 12898 (59 FR 7629, February 16, 1994).

    The environmental justice finding in the 2012 final major and area
source rules remains relevant in this action, which seeks comments on
proposed amendments to 40 CFR part 63, subparts DDDDDD and HHHHHHH,
that are mainly corrections to existing rule requirements and major
source emission limits raised by stakeholders.

List of Subjects in 40 CFR Part 63

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

Andrew Wheeler,
Administrator.

    For the reasons set forth in the preamble, the EPA proposes to
amend 40 CFR part 63 as follows:

PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
FOR SOURCE CATEGORIES

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

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

Subpart DDDDDD--National Emission Standards for Hazardous Air
Pollutants for Polyvinyl Chloride and Copolymers Production Area
Sources

0
2. Section 63.11140 is amended by revising paragraphs (b)(2)
introductory text, (b)(3) introductory text, and (c) to read as
follows:

Sec.  63.11140  Am I subject to this subpart?

* * * * *
    (b) * * *
    (2) Except as specified in paragraph (b)(3) of this section, an
affected source is new if you commenced construction, or reconstruction
of the affected source between October 6, 2006, and May 20, 2011.
* * * * *
    (3) If you are a new affected source as specified in paragraph
(b)(2) of this section that commenced construction or reconstruction
between October 6, 2006, and May 20, 2011, then after April 17, 2012,
you must comply with paragraphs (b)(3)(i) and (ii) of this section.
* * * * *
    (c) This subpart does not apply to research and development
facilities, as defined in section 112(c)(7) of the Clean Air Act.
* * * * *
0
3. Section 63.11141 is amended by adding paragraph (f) to read as
follows:

Sec.  63.11141  What are my compliance dates?

* * * * *
    (f) All affected sources that commenced construction or
reconstruction on or before May 20, 2011, must be in compliance with
Sec.  63.11142(g) by [date 3 years after date of publication of final
rule in the Federal Register]. All affected sources that commenced
construction or reconstruction after May 20, 2011, must be in
compliance with Sec.  63.11142(g) upon [date of publication of final
rule in the Federal Register] or initial startup, whichever is later.
0
4. Section 63.11142 is amended by revising paragraphs (b), (f)
introductory text, and (f)(2) and (9) and adding paragraph (g) to read
as follows:

Sec.  63.11142  What are the standards and compliance requirements for
new and existing sources?

* * * * *
    (b) Except as specified in paragraph (g) of this section, you must
comply with each emission limit and standard specified in Table 1 to
this subpart that applies to your existing affected source, and you
must comply with each emission limit and standard specified in Table 2
to this subpart that applies to your new affected source.
* * * * *
    (f) You must meet the requirements of the applicable sections of
subpart HHHHHHH of this part, as specified in paragraphs (f)(1) through
(19) of this section, except for the purposes of complying with this
subpart, where the applicable sections of subpart HHHHHHH of this part,
as specified in paragraphs (f)(1) through (19) of this section
reference Table 1, 1b, 2, or 2b to subpart HHHHHHH of this part,
reference is made to Table 1 or Table 2 to this subpart.
* * * * *
    (2) You must comply with the requirements of Sec.  63.11890(a)
through (d).
* * * * *
    (9) If you use a closed vent system to comply with paragraph (b) or
(g) of this section, or to comply with the requirements in Sec.
63.11910, Sec.  63.11915, or Sec.  63.11955, then you must meet the
requirements of Sec.  63.11930 for closed vent systems.
* * * * *
    (g) Beginning no later than the compliance dates specified in Sec.
63.11141(f), the emission limits for PVC-combined process vents in
Tables 1 and 2 to this subpart no longer apply; instead, you must
comply with the emission limits for PVC-combined process vents in
Tables 1b and 2b to subpart HHHHHHH of this part. At any time before
the compliance dates specified in Sec.  63.11141(f), you may choose to
comply with the emission limits for PVC-combined process vents in
Tables 1b and 2b to subpart HHHHHHH of this part in lieu of the
emission limits for PVC-combined process vents in Tables 1 and 2 to
this subpart.
0
5. Table 1 to subpart DDDDDD of part 63 is revised to read as follows:

        Table 1 to Subpart DDDDDD of Part 63--Emission Limits and Standards for Existing Affected Sources
----------------------------------------------------------------------------------------------------------------
                                                                  And for an affected
For this type of emission point . . .      And for this air      source producing this      You must meet this
                                           pollutant . . .      type of PVC resin . . .    emission limit . . .
----------------------------------------------------------------------------------------------------------------
PVC process vents \a\................  Vinyl chloride.........  All resin types........  5.3 parts per million
                                                                                by volume (ppmv).
                                       Total hydrocarbons.....  All resin types........  46 ppmv measured as
                                                                                propane.
                                       Total organic HAP \b\..  All resin types........  140 ppmv.
                                       Dioxins/furans (toxic    All resin types........  0.13 nanograms per dry
                                        equivalency basis).                               standard cubic meter
                                                                                (ng/dscm).
PVC-combined process vents \a\ \c\...  Vinyl chloride.........  All resin types........  0.56 ppmv.
                                       Total hydrocarbons.....  All resin types........  2.3 ppmv measured as
                                                                                propane.
                                       Total organic HAP \b\..  All resin types........  29 ppmv.
                                       Dioxins/furans (toxic    All resin types........  0.076 ng/dscm.
                                        equivalency basis).
Stripped resin.......................  Vinyl chloride.........  Bulk resin.............  7.1 parts per million
                                                                                by weight (ppmw); or
                                                                                0.0071 grams per
                                                                                kilogram of product
                                                                                resin, dry basis (g/
                                                                                kg).
                                                                Dispersion resin.......  1,500 ppmw; or 1.5 g/
                                                                                kg.
                                                                Suspension resin.......  36 ppmw; or 0.036 g/kg.
                                                                Suspension blending      140 ppmw; or 0.14 g/kg.
                                                                 resin.

                                                                Copolymer resin........  790 ppmw; or 0.79 g/kg.
                                       Total non-vinyl          Bulk resin.............  170 ppmw; or 0.17 g/kg.
                                        chloride organic HAP.
                                                                Dispersion resin.......  320 ppmw; or 0.32 g/kg.
                                                                Suspension resin.......  36 ppmw; or 0.036 g/kg.
                                                                Suspension blending      500 ppmw; or 0.50 g/kg.
                                                                 resin.
                                                                Copolymer resin........  1,900 ppmw; or 1.9 g/
                                                                                kg.
Process Wastewater...................  Vinyl chloride.........  All resin types........  2.1 ppmw.
----------------------------------------------------------------------------------------------------------------
\a\ Emission limits at 3-percent oxygen, dry basis.
\b\ Affected sources have the option to comply with either the total hydrocarbon limit or the total organic HAP
  limit.
\c\ Beginning on the date specified in Sec.   63.11141(f), these limits no longer apply; instead as specified in
  Sec.   63.11142(g), the limits in Table 1b to subpart HHHHHHH of this part apply.

0
6. Table 2 to subpart DDDDDD of Part 63 is revised to read as follows:

          Table 2 to Subpart DDDDDD of Part 63--Emission Limits and Standards for New Affected Sources
----------------------------------------------------------------------------------------------------------------
                                                                  And for an affected
For this type of emission point . . .      And for this air      source producing this      You must meet this
                                           pollutant . . .      type of PVC resin . . .    emission limit . . .
----------------------------------------------------------------------------------------------------------------
PVC process vents \a\................  Vinyl chloride.........  All resin types........  5.3 parts per million
                                                                                by volume (ppmv).
                                       Total hydrocarbons.....  All resin types........  46 ppmv measured as
                                                                                propane.
                                       Total organic HAP \b\..  All resin types........  140 ppmv.
                                       Dioxins/furans (toxic    All resin types........  0.13 nanograms per dry
                                        equivalency basis).                               standard cubic meter
                                                                                (ng/dscm).
PVC-combined process vents \a\ \c\...  Vinyl chloride.........  All resin types........  0.56 ppmv.
                                       Total hydrocarbons.....  All resin types........  2.3 ppmv measured as
                                                                                propane.
                                       Total organic HAP \b\..  All resin types........  29 ppmv.
                                       Dioxins/furans (toxic    All resin types........  0.076 ng/dscm.
                                        equivalency basis).
Stripped resin.......................  Vinyl chloride.........  Bulk resin.............  7.1 parts per million
                                                                                by weight (ppmw); or
                                                                                0.0071 grams per
                                                                                kilogram of product
                                                                                resin, dry basis (g/
                                                                                kg).
                                                                Dispersion resin.......  1,500 ppmw, or 1.5 g/
                                                                                kg.
                                                                Suspension resin.......  36 ppmw; or 0.036 g/kg.
                                                                Suspension blending      140 ppmw; or 0.14 g/kg.
                                                                 resin.
                                                                Copolymer resin........  790 ppmw; or 0.79 g/kg.
                                       Total non-vinyl          Bulk resin.............  170 ppmw; or 0.17 g/kg.
                                        chloride organic HAP.
                                                                Dispersion resin.......  320 ppmw; or 0.32 g/kg.
                                                                Suspension resin.......  36 ppmw; or 0.036 g/kg.
                                                                Suspension blending      500 ppmw; or 0.50 g/kg.
                                                                 resin.
                                                                Copolymer resin........  1,900 ppmw; or 1.9 g/
                                                                                kg.
Process Wastewater...................  Vinyl chloride.........  All resin types........  2.1 ppmw.
----------------------------------------------------------------------------------------------------------------
\a\ Emission limits at 3 percent oxygen, dry basis.
\b\ Affected sources have the option to comply with either the total hydrocarbon limit or the total organic HAP
  limit.
\c\ Beginning on the date specified in Sec.   63.11141(f), these limits no longer apply; instead as specified in
  Sec.   63.11142(g), the limits in Table 2b to subpart HHHHHHH of this part apply.

Subpart HHHHHHH--National Emission Standards for Hazardous Air
Pollutant Emissions for Polyvinyl Chloride and Copolymers
Production

0
7. Section 63.11865 is revised to read as follows:

Sec.  63.11865  Am I subject to the requirements in this subpart?

    You are subject to the requirements in this subpart if you own or
operate one or more polyvinyl chloride and copolymers production
process units (PVCPU) as defined in Sec.  63.12005 that are located at,
or are part of, a major source of hazardous air pollutants (HAP)
emissions as defined in Sec.  63.2. The requirements of this subpart do
not apply to research and development facilities, as defined in section
112(c)(7) of the Clean Air Act.
0
8. Section 63.11872 is revised to read as follows:

Sec.  63.11872  What is the relationship to other regulations?

    After the applicable compliance date specified in Sec.
63.11875(a), (b), or (c), an affected source that is also subject to
the provisions of other subparts in 40 CFR part 60 or this part is
required to comply with this subpart and any other applicable subparts
in 40 CFR part 60 or this part, except subpart J of this part does not
apply to any source that is subject to the requirements of this
subpart.
0
9. Section 63.11875 is amended by adding paragraph (e) to read as
follows:

Sec.  63.11875  When must I comply with this subpart?

* * * * *
    (e) All affected sources that commenced construction or
reconstruction on or before May 20, 2011, must be in compliance with
Sec.  63.11880(d) by [date 3 years after date of publication of final
rule in the Federal Register]. All affected sources that commenced
construction or reconstruction after May 20, 2011, must be in
compliance with Sec.  63.11880(d) upon [date of publication of final
rule in the Federal Register] or initial startup, whichever is later.

0
10. Section 63.11880 is amended by revising paragraph (a) and adding
paragraph (d) to read as follows:

Sec.  63.11880  What emission limits, operating limits and standards
must I meet?

    (a) Except as specified in paragraph (d) of this section, you must
comply with each emission limit and standard specified in Table 1 to
this subpart that applies to your existing affected source, and you
must comply with each emission limit and standard specified in Table 2
to this subpart that applies to your new affected source.
* * * * *
    (d) Beginning no later than the compliance dates specified in Sec.
63.11875(e), the emission limits specified in Tables 1 and 2 to this
subpart no longer apply. Instead, you must comply with each emission
limit and standard specified in Table 1b to this subpart that applies
to your existing affected source, and you must comply with each
emission limit and standard specified in Table 2b to this subpart that
applies to your new affected source. At any time before the compliance
dates specified in Sec.  63.11875(e), you may choose to comply with the
emission limits in Tables 1b and 2b to this subpart in lieu of the
emission limits in Tables 1 and 2 to this subpart.
0
11. Section 63.11890 is amended by revising paragraphs (d)(2) and (3)
and (d)(5)(iv) to read as follows:

Sec.  63.11890  What are my additional general requirements for
complying with this subpart?

* * * * *
    (d) * * *
    (2) When a performance test indicates that emissions of a pollutant
in Table 1, 1b, 2, or 2b to this subpart are exceeding the emission
standard for the pollutant specified in Table 1, 1b, 2, or 2b to this
subpart.
    (3) When a 3-hour block average from a continuous emissions
monitor, as required by Sec.  63.11925(c)(1) through (3), exceeds an
emission limit in Table 1, 1b, 2, or 2b to this subpart.
* * * * *
    (5) * * *
    (iv) A closure device and all other leaks on a pressure vessel.
* * * * *

Sec.  63.11895  [Removed and Reserved]

0
12. Section 63.11895 is removed and reserved.
0
13. Section 63.11896 is amended by revising paragraphs (a) and (b) to
read as follows:

Sec.  63.11896  What am I required to do if I make a process change at
my affected source?

* * * * *
    (a) You must demonstrate that the changed process unit or component
of the affected facility is in compliance with the applicable
requirements for an existing affected source. You must demonstrate
initial compliance with the emission limits and establish any
applicable operating limits in Sec.  63.11880 within 180 days of the
date of startup of the changed process unit or component of the
affected facility. You must demonstrate compliance with any applicable
work practice standards upon startup of the changed process unit or
component of the affected facility.
    (b) You must demonstrate that the changed process unit or component
of the affected facility is in compliance with the applicable
requirements for a new affected source. You must demonstrate initial
compliance with the emission limits and establish any applicable
operating limits in Sec.  63.11880 within 180 days of the date of
startup of the changed process unit or component of the affected
facility. You must demonstrate compliance with any applicable work
practice standards upon startup of the changed process unit or
component of the affected facility.
* * * * *
0
14. Section 63.11900 is amended by revising paragraphs (a), (c), and
(d) to read as follows:

Sec.  63.11900  By what date must I conduct initial performance testing
and monitoring, establish any applicable operating limits and
demonstrate initial compliance with my emission limits and work
practice standards?

    (a) For existing affected sources, you must establish any
applicable operating limits required in Sec.  63.11880 and demonstrate
initial compliance with the emission limits and standards specified in
Table 1 or 1b to this subpart and Table 3 to this subpart, as
applicable, no later than 180 days after the compliance date specified
in Sec.  63.11875 and according to the applicable provisions in Sec.
63.7(a)(2).
* * * * *
    (c) For new or reconstructed affected sources, you must establish
any applicable operating limits required in Sec.  63.11880, and
demonstrate initial compliance with the emission limits and standards
specified in Table 2 or 2b to this subpart and Table 3 to this subpart,
as applicable, no later than 180 days after the compliance date
specified in Sec.  63.11875 or within 180 days after startup of the
source, whichever is later, according to Sec.  63.7(a)(2)(ix).
    (d) For new and reconstructed affected sources, you must
demonstrate initial compliance with any applicable work practice
standards required in Sec.  63.11880 no later than the compliance date
specified in Sec.  63.11875 and according to the applicable provisions
in Sec.  63.7(a)(2).
* * * * *
0
15. Section 63.11910 is amended by:
0
a. Revising paragraphs (a) introductory text, (a)(1) heading,
(a)(1)(ii), and (a)(2)(ii);
0
b. Removing paragraph (a)(2)(iii);
0
c. Revising paragraph (a)(3)(ii);
0
d. Adding paragraph (a)(3)(iii);
0
e. Revising paragraphs (b), (c) introductory text, and (c)(1), (3), and
(4); and
0
f. Adding paragraphs (d) and (e).
    The revisions and additions read as follows:

Sec.  63.11910  What are my initial and continuous compliance
requirements for storage vessels?

* * * * *
    (a) Fixed roof storage vessels. Except as specified in paragraph
(d) of this section, for each fixed roof storage vessel used to comply
with the requirements specified in Table 3 to this subpart, you must
meet the requirements in paragraphs (a)(1) through (4) of this section.
    (1) Closure requirements. * * *
    (ii) Each opening in the fixed roof must be equipped with a cover
or other type of closure device designed to operate such that when the
closure device is secured in the closed position there are no visible
cracks, holes, gaps, or other open spaces in the closure device or
between the perimeter of the opening and the closure device.
    (2) * * *
    (ii) You may open closure devices or remove the fixed roof under
the conditions specified in paragraphs (a)(2)(ii)(A) and (B) of this
section.
    (A) A closure device may be opened or the roof may be removed when
needed to provide access for manual operations such as maintenance,
inspection, sampling, or cleaning.
    (B) Opening of a conservation vent or similar type of vent that
vents to the atmosphere (or allows air to enter the storage vessel) is
allowed during normal operating conditions to maintain the tank
internal operating pressure within tank design specifications. Normal
operating conditions that may require these devices to open are during
those times when the internal pressure of the storage vessel is outside
the internal pressure operating range for the storage

vessel as a result of loading or unloading operations or diurnal
ambient temperature fluctuations.
    (3) * * *
    (ii) If you determine parts of the roof are unsafe to inspect
because operating personnel would be exposed to an imminent or
potential danger as a consequence of such inspection, then the
requirements specified in paragraph (a)(3)(i) of this section do not
apply and you must comply with the requirements specified in paragraphs
(a)(3)(ii)(A) and (B) of this section.
    (A) You must prepare and maintain at the plant site written
documentation that identifies all parts of the fixed roof and any
closure devices that are unsafe to inspect and explains why such parts
are unsafe to inspect.
    (B) You must develop and implement a written plan and schedule to
conduct inspections the next time alternative storage capacity becomes
available and the storage vessel can be emptied or temporarily removed
from service, as necessary, to complete the inspection. The required
inspections must be performed as frequently as practicable, but do not
need to be performed more than once per calendar year. Keep a copy of
the written plan and schedule at the plant site, as specified in Sec.
63.11990(b).
    (iii) Keep records of the date of each inspection, as required in
paragraph (a)(3)(i) and (a)(3)(ii)(B) of this section. Provide
notification of each inspection as specified in Sec.  63.11985(c)(1).
* * * * *
    (b) Floating roof storage vessels. For each floating roof storage
vessel used to comply with the requirements specified in Table 3 to
this subpart, you must meet all requirements of Sec. Sec.  63.1060
through 63.1067 for internal floating roof storage vessels or external
floating roof storage vessels, as applicable.
    (c) Pressure vessels. For each pressure vessel used to comply with
the requirements specified in Table 3 to this subpart, you must meet
the requirements in paragraphs (c)(1) through (4) of this section.
    (1) You must operate the pressure vessel as a closed system without
emissions to the atmosphere. Vent streams sent to the process from
pressure vessels, or purged from pressure vessels, must meet the
requirements in paragraph (d)(4) of this section and Sec.  63.11925(a)
and (b). You may also elect to vapor balance the pressure vessel during
filling operations and comply with the requirements in paragraph (e) of
this section.
* * * * *
    (3) The pressure vessel must be designed to operate with no
detectable emissions, as indicated by an instrument reading of less
than 500 ppm above background, at all times. Any such release (e.g.,
leak) constitutes a violation. You must conduct annual monitoring of
each potential leak interface and each point on the pressure vessel
through which HAP could potentially be emitted, using the procedures
specified in Sec.  63.1023(b) and (c) and paragraphs (c)(3)(i) and (ii)
of this section.
    (i) When Sec.  63.1023(b)(5) refers to ``when the equipment is in
regulated material service or is in use with any other detectable
material,'' it means ``when the pressure vessel is in HAP service'' for
the purposes of this section.
    (ii) Section 63.1023(b)(6) does not apply for the purposes of this
section.
    (4) You must comply with the recordkeeping provisions specified in
Sec.  63.11990(b)(4) and the reporting provisions specified in Sec.
63.11985(a)(1) and (b)(1) and (10).
    (d) Fixed roof storage vessels vented to a closed vent system and
control device. For each fixed roof storage vessel that vents to a
closed vent system and control device to comply with the requirements
specified in Table 3 to this subpart, you must meet the requirements in
paragraphs (a)(1) and (3) and (d)(1) through (3) of this section. In
lieu of complying with the requirements specified in paragraphs (d)(1)
through (3) of this section, you may elect to route emissions back to
the process and comply with the requirements in paragraph (d)(4) of
this section. During filling operations, in lieu of complying with the
requirements specified in paragraphs (d)(1) through (3) of this
section, you may elect to vapor balance the storage vessel and comply
with the requirements in paragraph (e) of this section.
    (1) Except as specified in paragraph (d)(2) of this section, you
must develop a control device operating plan containing the information
listed in paragraphs (d)(1)(i) and (ii) of this section and meet the
requirements specified in Sec.  63.11930. You must then operate the
control device and monitor the parameters of the control device in
accordance with the operating plan. You must not use a flare to comply
with the 95 weight percent HAP reduction requirement in Table 3 to this
subpart.
    (i) The documentation demonstrating that the control device will
achieve the required control efficiency during maximum loading
conditions is to include a description of the gas stream which enters
the control device, including flow and HAP content under varying liquid
level conditions (dynamic and static) and manufacturer's design
specifications for the control device. If the control device or the
closed vent system receives vapors, gases, or liquids other than fuels
from sources that are not fixed roof storage vessels, then the
efficiency demonstration is to include consideration of all vapors,
gases, and liquids received by the closed vent capture system and
control device. If an enclosed combustion device with a minimum
residence time of 0.75 seconds and a minimum temperature of 816 degrees
Celsius (1,501 degrees Fahrenheit) is used to meet the 95-percent
requirement, documentation that those conditions will exist is
sufficient to meet the requirements of this paragraph (d)(1)(i).
    (ii) A description of the parameter or parameters to be monitored
to ensure that the control device will be operated in conformance with
its design and an explanation of the criteria used for selection of
that parameter (or parameters).
    (2) If the storage vessel is vented to a closed vent system and
control device that is also used to comply with the process vent
emission limits in Table 1, 1b, 2, or 2b to this subpart and you are
meeting the requirements in Sec. Sec.  63.11925 through 63.11950 for
the closed vent system and control device, then you are not required to
comply with the requirements specified in paragraph (d)(1) of this
section.
    (3) During periods of planned routine maintenance of a control
device, operate the storage vessel in accordance with paragraphs
(d)(3)(i) and (ii) of this section. You must keep the records specified
in Sec.  63.11990(b)(6).
    (i) Do not add material to the storage vessel during periods of
planned routine maintenance.
    (ii) Limit periods of planned routine maintenance for each control
device to no more than 360 hours per year.
    (4) If you route emissions from a storage vessel back to the
process to comply with the requirements specified in Table 3 to this
subpart, you must meet the requirements in paragraphs (d)(4)(i) through
(iii) of this section.
    (i) The HAP in the emissions must meet one or more of the
conditions specified in paragraphs (d)(4)(i)(A) through (D) of this
section.
    (A) Recycled and/or consumed in the same manner as a material that
fulfills the same function in that process;
    (B) Transformed by chemical reaction into materials that are not
HAP;
    (C) Incorporated into a product; and/or
    (D) Recovered.
    (ii) To demonstrate compliance with paragraph (d)(4)(i) of this
section, you

must prepare a design evaluation (or engineering assessment) that
demonstrates that one or more of the conditions specified in paragraphs
(d)(4)(i)(A) through (D) of this section are being met.
    (iii) You must comply with the requirements of Sec.  63.11930.
    (e) Vapor balancing. For each storage vessel you elect to vapor
balance during filling operations to comply with the requirements
specified in Table 3 to this subpart, you must meet the requirements in
paragraphs (e)(1) through (7) of this section.
    (1) The vapor balancing system must be designed and operated to
route HAP vapors displaced from loading of the storage vessel to the
railcar, tank truck, or barge from which the storage vessel is filled
without emissions to the atmosphere. You may depressurize the railcar,
tank truck, or barge by sending the HAP vapors back to the process and
meet the requirements of paragraphs (d)(4)(i) through (iii) of this
section.
    (2) Tank trucks and railcars must have a current certification in
accordance with the U.S. Department of Transportation (DOT)
qualification and maintenance requirements of 49 CFR part 180, subparts
E (for cargo tanks) and F (for tank cars). Barges must have a current
certification of vapor-tightness through testing in accordance with
Sec.  63.565.
    (3) HAP must only be unloaded from tank trucks, railcars, or barges
when vapor collection systems are connected to the storage vessel's
vapor collection system.
    (4) Pressure relief devices on the storage vessel, railcar, tank
truck, barge, and vapor return line must not open during storage vessel
loading or as a result of diurnal temperature changes (breathing
losses). You must comply with the requirements in Sec.  63.11915(c) for
each pressure relief device.
    (5) The vapor balancing system must be designed to operate with no
detectable emissions, as indicated by an instrument reading of less
than 500 ppm above background, at all times. Any such release (e.g.,
leak) constitutes a violation of this rule. You must conduct annual
monitoring of each potential leak interface and each point on the vapor
balancing system through which HAP could potentially be emitted, using
the procedures specified in Sec.  63.1023(b) and (c) and paragraphs
(e)(5)(i) and (ii) of this section.
    (i) When Sec.  63.1023(b)(5) refers to ``when the equipment is in
regulated material service or is in use with any other detectable
material,'' it means ``when the vapor balancing system is in HAP
service'' for the purposes of this section.
    (ii) Section 63.1023(b)(6) does not apply for the purposes of this
section.
    (6) Railcars, tank trucks, or barges that deliver HAP to a storage
vessel must be reloaded or cleaned at a facility that utilizes one of
the control techniques specified in paragraphs (e)(6)(i) through (iii)
of this section.
    (i) The railcar, tank truck, or barge must be connected to a closed
vent system with a non-flare control device that reduces inlet
emissions of HAP by 95 percent by weight or greater. Railcars, tank
trucks, or barges that have materials with a maximum true vapor
pressure greater than 11.1 psia must not use the option in this
paragraph (e)(6)(i).
    (ii) A vapor balancing system designed and operated to collect HAP
vapor displaced from the tank truck, railcar, or barge during reloading
must be used to route the collected HAP vapor to the storage vessel
from which the liquid being transferred originated.
    (iii) The railcar, tank truck, or barge must route its emissions
back to the process.
    (7) The owner or operator of the facility where the railcar, tank
truck, or barge is reloaded or cleaned must comply with paragraphs
(e)(7)(i) through (v) of this section.
    (i) Submit to the owner or operator of the storage vessel and to
the Administrator a written certification that the reloading or
cleaning facility will meet the requirements of paragraphs (e)(7)(i)
through (iv) of this section. The certifying entity may revoke the
written certification by sending a written statement to the owner or
operator of the storage vessel giving at least 90 days' notice that the
certifying entity is rescinding acceptance of responsibility for
compliance with the requirements of paragraph (e)(7) of this section.
    (ii) If complying with paragraph (e)(6)(i) of this section, comply
with the requirements for closed vent systems and control devices
specified in paragraph (d)(1) of this section. The notification and
reporting requirements in Sec.  63.11985 do not apply to the owner or
operator of the offsite cleaning or reloading facility.
    (iii) If complying with paragraph (e)(6)(ii) of this section, keep
the records specified in Sec.  63.11990(b)(7)(ii).
    (iv) If complying with paragraph (e)(6)(iii) of this section,
comply with the requirements in paragraphs (d)(4)(i) and (iii) only and
keep the records specified in Sec.  63.11990(b)(7)(iii).
    (v) After the compliance dates specified in Sec.  63.11875 at an
offsite reloading or cleaning facility subject to paragraph (e) of this
section, compliance with the monitoring, recordkeeping, and reporting
requirements of any other subpart of this part constitutes compliance
with the monitoring, recordkeeping, and reporting requirements of
paragraphs (e)(7)(ii) through (iv) of this section. You must identify
in your Notification of Compliance Status report required by Sec.
63.11985(a) the subpart to this part with which the owner or operator
of the reloading or cleaning facility complies.
0
16. Section 63.11915 is revised to read as follows:

Sec.  63.11915  What are my compliance requirements for equipment
leaks?

    For equipment in HAP service (as defined in Sec.  63.12005), you
must comply with the requirements in paragraphs (a) through (e) of this
section.
    (a) Except as specified in paragraphs (c) through (e) of this
section, you must comply with Sec. Sec.  63.1019(a) and (c) through (f)
and 63.1020 through 63.1039.
    (b) [Reserved]
    (c) For pressure relief devices in HAP service, as defined in Sec.
63.12005, you must meet the requirements of this paragraph (c) in
addition to the requirements specified in paragraph (a) of this
section. You must also comply with the recordkeeping requirements in
Sec.  63.11990(c) and the reporting requirements in Sec.
63.11985(a)(2), (b)(2), and (c)(7).
    (1) For pressure relief devices in HAP service that discharge
directly to the atmosphere without first meeting the process vent
emission limits in Table 1, 1b, 2, or 2b to this subpart by routing the
discharge to a closed vent system and control device designed and
operated in accordance with the requirements in Sec. Sec.  63.11925
through 63.11950, you must install, maintain, and operate release
indicators as specified in paragraphs (c)(1)(i) and (ii) of this
section. Any release to the atmosphere without meeting the process vent
emission limits in Table 1, 1b, 2, or 2b to this subpart, constitutes a
violation. You must submit the report specified in Sec.
63.11985(c)(7), as described in paragraph (c)(1)(iii) of this section.
    (i) A release indicator must be properly installed on each pressure
relief device or associated process or piping system in such a way that
it will indicate when an emission release has occurred. Examples of
these types of devices and systems include, but are not limited to, a
rupture disk indicator, magnetic sensor, motion detector on the
pressure relief valve stem, flow monitor,

or pressure monitor. A release indicator does not include any
monitoring system used to meet the requirements of Sec.  63.11956.
    (ii) Each indicator must be equipped with an alert system that will
notify an operator immediately and automatically when the pressure
relief device is open. The alert must be located such that the signal
is detected and recognized easily by an operator.
    (iii) For any instance that the release indicator indicates that a
pressure relief device is open, you must notify operators that a
pressure release has occurred, and, within 10 days of the release, you
must submit to the Administrator the report specified in Sec.
63.11985(c)(7).
    (2) Pressure relief devices in HAP service that discharge directly
to a closed vent system and control device designed and operated in
accordance with the requirements in Sec. Sec.  63.11925 through
63.11950, are required to meet process vent emission limits in Table 1,
1b, 2, or 2b to this subpart. Any release to the atmosphere without
meeting the process vent emission limits in Table 1, 1b, 2, or 2b to
this subpart, constitutes a violation. You must notify operators that a
pressure release has occurred, and, within 10 days of the release, you
must submit to the Administrator the report specified in Sec.
63.11985(c)(7).
    (d) If you route emissions from equipment in HAP service through a
closed vent system to a control device, or back into the process or a
fuel gas system, then you must comply with paragraph (d)(1) or (2) of
this section.
    (1) Comply with Sec.  63.1034, except you must comply with Sec.
63.11930 in lieu of the closed vent system requirements specified in
Sec.  63.983, and the recordkeeping and reporting requirements
associated with Sec.  63.983 do not apply.
    (2) If emissions from equipment are vented to a closed vent system
and control device that is also used to comply with the process vent
emission limits in Table 1, 1b, 2, or 2b to this subpart and you are
meeting the requirements in Sec. Sec.  63.11925 through 63.11950 for
the closed vent system and control device, then you are not required to
comply with the closed vent system and control device requirements
specified in Sec.  63.1034.
    (e) The referenced provisions specified in paragraphs (e)(1)
through (6) of this section do not apply when demonstrating compliance
with this section.
    (1) The phrase ``except during periods of start-up, shutdown and
malfunction as specified in the referencing subpart'' in Sec.
63.984(a)(1).
    (2) Section 63.998(d)(3).
    (3) The phrase ``may be included as part of the startup, shutdown,
and malfunction plan, as required by the referencing subpart for the
source, or'' from Sec.  63.1024(f)(4)(i).
    (4) The phrase ``(except periods of startup, shutdown, or
malfunction)'' from Sec.  63.1026(e)(1)(ii)(A).
    (5) The phrase ``(except during periods of startup, shutdown, or
malfunction)'' from Sec.  63.1028(e)(1)(i)(A).
    (6) The phrase ``(except during periods of startup, shutdown, or
malfunction)'' from Sec.  63.1031(b)(1).
0
17. Section 63.11920 is amended by revising paragraphs (a)(3)(iii) and
(g) introductory text and revising parameter ``Ddelay'' of
Equation 1 in paragraph (h)(4)(ii) to read as follows:

Sec.  63.11920  What are my initial and continuous compliance
requirements for heat exchange systems?

    (a) * * *
    (3) * * *
    (iii) Determine the vinyl chloride concentration (in parts per
billion by weight) in the cooling water using Method 107 at 40 CFR part
61, appendix B.
* * * * *
    (g) The delay of repair action level is defined as either a total
strippable volatile organic compounds concentration (as methane) in the
stripping gas of 39 parts per million by volume or a total strippable
volatile organic compounds concentration in the cooling water of 500
parts per billion by weight or a vinyl chloride concentration in the
cooling water of 500 parts per billion by weight. While you remain
below the delay of repair action level, you may delay the repair of a
leaking heat exchanger only if one of the conditions in paragraph
(g)(1) or (2) of this section is met. If you exceed the delay of repair
action level you must repair according to paragraph (e) of this
section. You must determine if a delay of repair is necessary as soon
as practicable, but no later than 45 days after first identifying the
leak.
* * * * *
    (h) * * *
    (4) * * *
    (ii) * * *

Ddelay = Expected duration of the repair delay, hours.

0
18. Section 63.11925 is amended by revising paragraphs (a), (b), (c)
introductory text, (c)(1), (d) introductory text, (d)(2) through (4),
(d)(5) introductory text, (d)(5)(i), (e) introductory text, (e)(2),
(e)(3)(ii), (e)(4)(i), (e)(5), (f) introductory text, (g) introductory
text, (g)(2)(iii)(B)(2)(ii), (g)(3), and (h) to read as follows:

Sec.  63.11925  What are my initial and continuous compliance
requirements for process vents?

* * * * *
    (a) Emission limits. Each process vent must meet the emission
limits in Table 1, 1b, 2, or 2b to this subpart prior to the vent
stream being exposed to the atmosphere. The emission limits in Table 1,
1b, 2, or 2b to this subpart apply at all times. The emission limits in
Table 1, 1b, 2, or 2b to this subpart must not be met through dilution.
If an applicable process vent stream at a PVCPU is comingled with a
vent stream from one or more non-PVCPU sources and the comingled
streams are vented through a shared control device, then each emission
standard (and subsequent control device, monitoring, recordkeeping,
reporting, and other requirements) to which the comingled vent stream
is subject applies.
    (b) Closed vent systems and control devices. Each process vent as
defined in Sec.  63.12005, that is in HAP service must be routed
through a closed vent system to a control device. All gas streams
routed to the closed vent system and control device must be for a
process purpose and not for the purpose of diluting the process vent to
meet the emission limits in Table 1, 1b, 2, or 2b to this subpart. Each
control device used to comply with paragraph (a) of this section must
meet the requirements of Sec. Sec.  63.11925 and 63.11940, and all
closed vent systems must meet the requirements in Sec.  63.11930. You
must not use a flare to comply with the emission limits in Table 1, 1b,
2, or 2b to this subpart.
    (c) General monitoring requirements. Except as provided in
paragraphs (c)(1) through (3) of this section, for each control device
used to comply with the process vent emission limit specified in Table
1, 1b, 2, or 2b to this subpart, you must install and operate a
continuous parameter monitoring system (CPMS) to monitor each operating
parameter specified in Sec.  63.11940(a) through (h) to comply with
your operating limit(s) required in Sec.  63.11880(b).
    (1) Hydrogen chloride continuous emission monitoring system (CEMS).
In lieu of establishing operating limits in Sec.  63.11880(b) and using
CPMS to comply with the operating limits, as specified in Sec.
63.11940(a) through (h), new and existing sources have the option to
install a hydrogen chloride CEMS to demonstrate initial and continuous
compliance with the hydrogen chloride emission limit for process vents,
as specified in paragraphs (d) and (e) of this section.
* * * * *

    (d) Initial compliance. To demonstrate initial compliance with the
emission limits in Table 1, 1b, 2, or 2b to this subpart, you must
comply with paragraphs (d)(1) through (5) of this section.
* * * * *
    (2) For each CPMS required, or CEMS that you elect to use as
specified in paragraph (c) of this section, you must prepare the
quality control program and site-specific performance evaluation test
plan as specified in Sec.  63.11935(b) and site-specific monitoring
plan specified in Sec.  63.11935(c), respectively.
    (3) For each CPMS required, or CEMS that you elect to use as
specified in paragraph (c) of this section, you must install, operate,
and maintain the CEMS and CPMS as specified in Sec.  63.11935(b) and
(c), respectively, and you must conduct an initial site-specific
performance evaluation test according to your site-specific monitoring
plan and Sec.  63.11935(b)(3) and (c)(4), respectively.
    (4) For each emission limit for which you use a CEMS to demonstrate
compliance, you must meet the requirements specified in Sec.
63.11890(c), and you must demonstrate initial compliance with the
emission limits in Table 1, 1b, 2, or 2b to this subpart based on 3-
hour block averages of CEMS data collected at the minimum frequency
specified in Sec.  63.11935(b)(2) and calculated using the data
reduction method specified in Sec.  63.11935(e). For a CEMS used on a
batch operation, you may use a data averaging period based on an
operating block in lieu of the 3-hour averaging period.
    (5) For each emission limit in Table 1, 1b, 2, or 2b to this
subpart for which you do not use a CEMS to demonstrate compliance, you
must meet the requirements of paragraphs (d)(5)(i) and (ii) of this
section.
    (i) You must conduct an initial performance test according to the
requirements in Sec.  63.11945 to demonstrate compliance with the total
hydrocarbons or total organic HAP emission limit, vinyl chloride
emission limit, hydrogen chloride emission limit, and dioxin/furan
emission limit in Table 1, 1b, 2, or 2b to this subpart.
* * * * *
    (e) Continuous compliance. To demonstrate continuous compliance
with the emission limits in Table 1, 1b, 2, or 2b to this subpart for
each process vent, you must comply with paragraphs (e)(1) through (5)
of this section.
* * * * *
    (2) You must operate and maintain each CPMS required, or CEMS that
you elect to use in paragraph (c) of this section, as specified in
Sec.  63.11935.
    (3) * * *
    (ii) You must demonstrate continuous compliance with the emission
limits in Table 1, 1b, 2, or 2b to this subpart based on 3-hour block
averages of CEMS data collected at the minimum frequency specified in
Sec.  63.11935(b)(2), and calculated using the data reduction method
specified in Sec.  63.11935(e). You must meet the requirements
specified in Sec.  63.11890(c). For a CEMS used on a batch operation,
you may use a data averaging period based on an operating block in lieu
of the 3-hour averaging period.
    (4) * * *
    (i) You must conduct a performance test once every 5 years
according to the requirements in Sec.  63.11945 for each pollutant in
Table 1, 1b, 2, or 2b to this subpart.
* * * * *
    (5) Each closed vent system and control device used to comply with
an emission limit in Table 1, 1b, 2, or 2b to this subpart must be
operated at all times when emissions are vented to, or collected by,
these systems or devices.
    (f) Toxic equivalency limit. To demonstrate compliance with the
dioxin/furan toxic equivalency emission limit specified in Table 1, 1b,
2, or 2b to this subpart, you must determine dioxin/furan toxic
equivalency as specified in paragraphs (f)(1) through (3) of this
section.
* * * * *
    (g) Emission profile. You must characterize each process vent by
developing an emissions profile for each contributing process vent
according to paragraphs (g)(1) through (3) of this section.
* * * * *
    (2) * * *
    (iii) * * *
    (B) * * *
    (2) * * *
    (ii) The total organic HAP concentration shall be computed
according to Equation 1 of this section except that only the organic
HAP species shall be summed. The list of organic HAP is provided in
Table 2 to subpart F of this part, except vinyl chloride shall be
excluded for purposes of compliance with this paragraph
(g)(2)(iii)(B)(2)(ii).
* * * * *
    (3) For miscellaneous process vents, the emissions profile must be
determined according to paragraph (g)(2)(iv) of this section.
    (h) Process changes. Except for temporary shutdowns for maintenance
activities, if you make a process change such that, as a result of that
change, you are subject to a different process vent limit in Table 1,
1b, 2, or 2b to this subpart, then you must meet the requirements of
Sec.  63.11896.
0
19. Section 63.11930 is amended by revising paragraphs (a), (b), (c)
introductory text, (c)(1)(iv), (c)(2)(i), (c)(2)(ii)(A), and (h)(3) to
read as follows:

Sec.  63.11930  What requirements must I meet for closed vent systems?

    (a) General. If you use a closed vent system to comply with an
emission limit in Table 1, 1b, 2, 2b, or 3 to this subpart, or to
comply with the requirements in Sec.  63.11910, Sec.  63.11915, or
Sec.  63.11955, then you must comply with the requirements in this
section. However, if you operate and maintain your closed vent system
in vacuum service as defined in Sec.  63.12005, you must meet the
requirements in paragraph (h) of this section and are not required to
meet the requirements in paragraphs (a) through (g) of this section.
    (b) Collection of emissions. Each closed vent system must be
designed and operated to collect HAP vapors and route the collected
vapors to a control device, a fuel gas system, or process.
    (c) Bypass. For each closed vent system that contains a bypass as
defined in Sec.  63.12005 (e.g., diverting a vent stream away from the
control device), you must not discharge to the atmosphere through the
bypass. Any such release constitutes a violation. The use of any bypass
diverted to the atmosphere during a performance test invalidates the
performance test. You must comply with the provisions of either
paragraph (c)(1) or (2) of this section for each closed vent system
that contains a bypass that could divert a vent stream to the
atmosphere. Any open-ended valve or line in the closed vent system that
is equipped with a cap, blind flange, plug, or second valve and that
operates to seal the open end at all times is not subject to either
paragraph (c)(1) or (2) of this section.
    (1) * * *
    (iv) For any instances where the flow indicator alarm is triggered,
you must submit to the Administrator as part of your compliance report,
the information specified in Sec.  63.11985(b)(9) and (10).
    (2) * * *
    (i) You must visually inspect the seal or closure mechanism at
least once every month to verify that the valve is maintained in the
non-diverting position, and the vent stream is not diverted through the
bypass. A broken seal or closure mechanism or a diverted valve
constitutes a violation. You must

maintain the records specified in paragraph (g)(1)(ii) of this section.
    (ii) * * *
    (A) For each instance that you change the bypass valve to the
diverting position, you must submit to the Administrator as part of
your compliance report, the information specified in Sec.
63.11985(b)(9) and (10).
* * * * *
    (h) * * *
    (3) In vacuum service alarm records and reports. For any incidences
where a closed vent system designed to be in vacuum service is not in
vacuum service, you must submit to the Administrator as part of your
compliance report, the information specified in Sec.  63.11985(b)(10).
0
20. Section 63.11935 is amended by revising paragraphs (a), (b)(5),
(b)(6)(i), (b)(7)(i) and (ii), (d) introductory text, (d)(1),
(d)(2)(iii), and (d)(3) to read as follows:

Sec.  63.11935  What CEMS and CPMS requirements must I meet to
demonstrate initial and continuous compliance with the emission
standards for process vents?

    (a) General requirements for CEMS and CPMS. You must meet the
requirements in paragraph (b) of this section for each CEMS specified
in Sec.  63.11925(c) used to demonstrate compliance with the emission
limits for process vents in Table 1, 1b, 2, or 2b to this subpart. You
must meet the CPMS requirements in paragraph (c) of this section and
establish your operating limits in paragraph (d) of this section for
each operating parameter specified in Table 5 to this subpart for each
process vent control device specified in Sec.  63.11925(b) that is used
to comply with the emission limits for process vents in Table 1, 1b, 2,
or 2b to this subpart, except that flow indicators specified in Sec.
63.11940(a) are not subject to the requirements of this section.
    (b) * * *
    (5) You must operate and maintain the CEMS in continuous operation
according to the quality control program and performance evaluation
test plan.
    (6) * * *
    (i) A hydrogen chloride CEMS must meet the requirements of 40 CFR
part 60, appendix B, performance specification 18, as well as the
requirements of 40 CFR part 60, appendix F, procedure 6. A dioxin/furan
CEMS must meet the requirements of the promulgated performance
specification for the CEMS.
* * * * *
    (7) * * *
    (i) You must notify the Administrator 1 month before starting use
of the CEMS.
    (ii) You must notify the Administrator 1 month before stopping use
of the CEMS, in which case you must also conduct a performance test
within 60 days of ceasing operation of the system.
* * * * *
    (d) Establish operating limit. For each operating parameter that
must be monitored in Sec.  63.11925(c) for process vent control
devices, you must establish an operating limit as specified in
paragraphs (d)(1) through (4) of this section. You must establish each
operating limit as an operating parameter range, minimum operating
parameter level, or maximum operating parameter level as specified in
Table 7 to this subpart. Where this subpart does not specify which
format to use for your operating limit (e.g., operating range or
minimum operating level), you must determine which format is best to
establish proper operation of the control device such that you are
meeting the emission limits specified in Table 1, 1b, 2, or 2b to this
subpart.
    (1) For process vent control devices, the operating limit
established for each monitored parameter specified in Sec.  63.11940
must be based on the operating parameter values recorded during any
performance test conducted to demonstrate compliance as required by
Sec.  63.11925(d)(4) and (e)(4) and may be supplemented by engineering
assessments and/or manufacturer's recommendations. You are not required
to conduct performance tests over the entire range of allowed operating
parameter values. The established operating limit must represent the
conditions for which the control device is meeting the emission limits
specified in Table 1, 1b, 2, or 2b to this subpart.
    (2) * * *
    (iii) The rationale for the established operating limit, including
any data and calculations used to develop the operating limit and a
description explaining why the operating limit indicates proper
operation of the control device.
* * * * *
    (3) For batch processes, you may establish operating limits for
individual batch emission episodes, including each distinct episode of
process vent emissions or each individual type of batch process that
generates wastewater, if applicable. You must provide rationale in a
batch pre-compliance report as specified in Sec.  63.11985(c)(2)
instead of the notification of compliance status for the established
operating limit. You must include any data and calculations used to
develop the operating limits and a description explaining why each
operating limit indicates proper operation of the control device during
the specific batch emission episode.
* * * * *
0
21. Section 63.11940 is amended by revising the introductory text and
paragraphs (b) introductory text, (b)(3)(ii), (c) introductory text,
(c)(2)(ii), (d) introductory text, (d)(1), (e) introductory text, (f),
and (g) introductory text to read as follows:

Sec.  63.11940  What continuous monitoring requirements must I meet for
control devices required to install CPMS to meet the emission limits
for process vents?

    As required in Sec.  63.11925(c), you must install and operate the
applicable CPMS specified in paragraphs (a) through (g) of this section
for each control device you use to comply with the emission limits for
process vents in Table 1, 1b, 2, or 2b to this subpart. You must
monitor, record, and calculate CPMS data averages as specified in Table
7 to this subpart. Paragraph (h) of this section provides an option to
propose alternative monitoring parameters or procedures.
* * * * *
    (b) Thermal oxidizer monitoring. If you are using a thermal
oxidizer to meet an emission limit in Table 1, 1b, 2, or 2b to this
subpart and you are required to use CPMS as specified in Sec.
63.11925(c), you must equip the thermal oxidizer with the monitoring
equipment specified in paragraphs (b)(1) through (3) of this section,
as applicable.
* * * * *
    (3) * * *
    (ii) You must conduct annual internal inspections of the catalyst
bed to check for fouling, plugging, or mechanical breakdown. You must
also inspect the bed for channeling, abrasion, and settling. If any of
the aforementioned conditions are found during the annual internal
inspection of the catalyst, you must replace the catalyst bed or take
other corrective action consistent with the manufacturer's
recommendations within 15 days or by the next time any process vent
stream is collected by the control device, whichever is later. If the
catalyst bed is replaced and is not of like type or manufacturer as the
old catalyst or is not as efficient as the old catalyst then you must
conduct a new performance test according to Sec.  63.11945 to determine
destruction efficiency. If a catalyst bed is replaced and the
replacement catalyst is of like type or manufacturer as the old
catalyst or is as efficient as or more efficient than the old catalyst,
then a new performance test to determine destruction efficiency is not
required.

    (c) Absorber and acid gas scrubber monitoring. If you are using an
absorber or acid gas scrubber to meet an emission limit in Table 1, 1b,
2, or 2b to this subpart and you are required to use CPMS as specified
in Sec.  63.11925(c), you must install the monitoring equipment
specified in paragraphs (c)(1) through (3) of this section.
* * * * *
    (2) * * *
    (ii) If the difference in the inlet gas stream temperature and the
inlet liquid stream temperature is greater than 38 degrees Celsius
(100.4 degrees Fahrenheit), you may install and operate a temperature
monitoring device at the scrubber gas stream exit.
* * * * *
    (d) Regenerative adsorber monitoring. If you are using a
regenerative adsorber to meet an emission limit in Table 1, 1b, 2, or
2b to this subpart and you are required to use CPMS as specified in
Sec.  63.11925(c), you must install and operate the applicable
monitoring equipment listed in paragraphs (d)(1) through (5) of this
section, and comply with the requirements in paragraphs (d)(6) and (7)
of this section. If the adsorption system water is wastewater as
defined in Sec.  63.12005, then it is subject to the requirements of
Sec.  63.11965.
    (1) For non-vacuum regeneration systems, an integrating
regeneration stream flow monitoring device having an accuracy of 10 percent and capable of recording the total regeneration stream
mass flow for each regeneration cycle.
* * * * *
    (e) Non-regenerative adsorber monitoring. If you are using a non-
regenerative adsorber, or canister type system that is sent off site
for regeneration or disposal, to meet an emission limit in Table 1, 1b,
2, or 2b to this subpart and you are required to use CPMS as specified
in Sec.  63.11925(c), you must install a system of dual adsorber units
in series and conduct the monitoring and bed replacement as specified
in paragraphs (e)(1) through (4) of this section.
* * * * *
    (f) Condenser monitoring. If you are using a condenser to meet an
emission limit in Table 1, 1b, 2, or 2b to this subpart and you are
required to use CPMS as specified in Sec.  63.11925(c), you must
install and operate a condenser exit gas temperature monitoring device.
    (g) Other control devices. If you use a control device other than
those listed in this subpart to comply with an emission limit in Table
1, 1b, 2, or 2b to this subpart and you are required to use CPMS as
specified in Sec.  63.11925(c), you must comply with the requirements
as specified in paragraphs (g)(1) and (2) of this section.
* * * * *
0
22. Section 63.11945 is amended by revising paragraphs (a) and (b)
introductory text to read as follows:

Sec.  63.11945  What performance testing requirements must I meet for
process vents?

    (a) General. For each control device used to meet the emission
limits for process vents in Table 1, 1b, 2, or 2b to this subpart, you
must conduct the initial and periodic performance tests required in
Sec.  63.11925(d) and (e) and as specified in Sec.  63.11896 using the
applicable test methods and procedures specified in Table 8 to this
subpart and paragraphs (b) through (d) of this section.
    (b) Process operating conditions. You must conduct performance
tests under the conditions specified in paragraphs (b)(1) through (3)
of this section, as applicable. You must record the process information
that documents operating conditions during the test and include in such
record an explanation to support how such conditions represent the
conditions specified in paragraphs (b)(1) through (3) of this section.
Upon request, the owner or operator shall make available to the
Administrator such records as may be necessary to determine the
conditions of performance tests. In all cases, a site-specific plan
must be submitted to the Administrator for approval prior to testing in
accordance with Sec.  63.7(c). The test plan must include the emission
profiles described in Sec.  63.11925(g).
* * * * *
0
23. Section 63.11955 is amended by revising paragraph (d)(1) to read as
follows:

Sec.  63.11955  What are my initial and continuous compliance
requirements for other emission sources?

* * * * *
    (d) * * *
    (1) Each gasholder must be vented back into the process for reuse
or routed to a closed vent system and control device meeting the
requirements of Sec. Sec.  63.11925 through 63.11950.
* * * * *
0
24. Section 63.11960 is amended by:
0
a. Revising paragraphs (a), (b) introductory text, and (b)(1)
introductory text;
0
b. Adding paragraph (b)(2);
0
c. Revising paragraphs (c)(1)(iii) and (iv), (c)(2) introductory text,
(c)(2)(i), and (c)(2)(ii) introductory text;
0
d. Revising parameter ``CGi'' of Equation 1 in paragraph
(c)(2)(ii)(A);
0
e. Revising paragraphs (c)(2)(ii)(B), (d)(3), (e)(1)(i) through (iv),
and (f) introductory text;
0
f. Revising parameter ``Ci'' of Equation 2 in paragraph (f);
and
0
g. Adding paragraphs (g) and (h).
    The revisions and additions read as follows:

Sec.  63.11960  What are my initial and continuous compliance
requirements for stripped resin?

    (a) Emission limits. You must meet the applicable vinyl chloride
and total non-vinyl chloride organic HAP emission limits for stripped
resin specified in Table 1, 1b, 2, or 2b to this subpart.
    (b) Determination of total non-vinyl chloride organic HAP. You must
develop a facility-specific list of HAP that are expected to be present
in each grade of resin produced by your PVCPU using the procedures
specified for resin concentration in paragraph (b)(1) of this section
or the alternative mass emission rate limit as specified in paragraph
(b)(2) of this section. This list must be kept current and must be
available for inspection by the Administrator. This list must include
the identification of each grade of resin produced, each HAP expected
to be present in that grade of resin, and the CAS number for each HAP.
    (1) For the purposes of demonstrating initial and continuous
compliance as required in paragraphs (c) and (d) of this section, you
must meet the requirements specified in paragraphs (b)(1)(i) and (ii)
of this section.
* * * * *
    (2) For the purposes of demonstrating initial and continuous
compliance with the alternative mass emission rates as specified in
paragraphs (g) and (h) of this section, you must meet the requirements
specified in paragraphs (b)(2)(i) through (iii) of this section.
    (i) The process components associated with the stripped resin
process must be enclosed and routed through a closed vent system
meeting the requirements in Sec. Sec.  63.11925 through 63.11950 for
the closed vent system and control device.
    (ii) You must sample the stack emissions for all Table 10 HAP (as
defined in Sec.  63.12005) using the appropriate test methods specified
in Table 8 to this subpart and the procedures specified in Sec.
63.11945.
    (iii) You must also sample the stack emissions for any HAP that are
not Table 10 HAP but are expected to be present based on your facility-
specific list of HAP using the appropriate test methods specified in
Table 8 to this

subpart and the procedures specified in Sec.  63.11945.
    (c) * * *
    (1) * * *
    (iii) For continuous processes, during a 24-hour sampling period,
collect one grab sample at intervals of 8 hours or per grade of PVC
produced, whichever is more frequent. Each sample must be taken as the
resin flows out of the stripper.
    (iv) For batch processes, during a 24-hour sampling period, for
each batch of each resin grade produced, collect one grab sample. Each
sample must be taken immediately following the completion of the
stripping operation.
    (2) Demonstrate initial compliance with the vinyl chloride and
total non-vinyl chloride organic HAP emission limits in Table 1, 1b, 2,
or 2b to this subpart as specified in paragraphs (c)(2)(i) and (ii) of
this section.
    (i) Calculate the vinyl chloride 24-hour arithmetic average for
each stripper using the vinyl chloride measured for the grab samples
collected as specified in paragraphs (c)(1)(iii) and (iv) of this
section and the calculation procedure specified in either paragraph
(c)(2)(ii)(A) or (B) of this section.
    (ii) Calculate the total non-vinyl chloride organic HAP 24-hour
arithmetic average for each stripper by first using the total non-vinyl
chloride organic HAP measured for the grab samples collected as
specified in paragraphs (c)(1)(iii) and (iv) of this section and the
calculation procedure specified in paragraph (f) of this section to
determine the total non-vinyl chloride organic HAP concentration of
each sample (CTNVCH). Then, use the CTNVCH and
the calculation procedure specified in either paragraph (c)(2)(ii)(A)
or (B) of this section to calculate the total non-vinyl chloride
organic HAP 24-hour arithmetic average.
    (A) * * *

CGi = 24-hour average concentration of vinyl chloride or
total non-vinyl chloride organic HAP in resin grade Gi,
ppmw. For non-vinyl chloride organic HAP, CTNVCH from
paragraph (f) of this section is used as CGi for each
resin grade.

* * * * *
    (B) If only one resin grade was produced during the 24-hour
sampling event, use the 24-hour arithmetic average vinyl chloride and
total non-vinyl chloride organic HAP concentrations for the one resin
grade calculated as specified in paragraphs (c)(2)(i) and (ii) of this
section for each stripper or calculate the 24-hour arithmetic average
vinyl chloride and total non-vinyl chloride organic HAP concentrations
for all strippers used to process the one grade of resin.
    (d) * * *
    (3) You must demonstrate continuous compliance with the vinyl
chloride and total non-vinyl chloride organic HAP emission limit for
stripped resin in Table 1, 1b, 2, or 2b to this subpart as specified in
paragraphs (c)(2)(i) and (ii) of this section.
    (e) * * *
    (1) * * *
    (i) SW-846-8260B (incorporated by reference, see Sec.  63.14) for
analysis of volatile organic compounds listed in Table 10 of this
subpart or the site-specific HAP list.
    (ii) SW-846-8270D (incorporated by reference, see Sec.  63.14) for
analysis of semivolatile organic compounds listed in Table 10 of this
subpart or the site-specific HAP list.
    (iii) SW-846-8315A (incorporated by reference, see Sec.  63.14) for
analysis of aldehyde compounds listed in Table 10 of this subpart or
the site-specific HAP list.
    (iv) SW-846-8015C (incorporated by reference, see Sec.  63.14) for
analysis of alcohol compounds listed in Table 10 of this subpart or the
site-specific HAP list.
* * * * *
    (f) Method for calculating total non-vinyl chloride organic HAP
concentration. For each stripped resin sample analyzed using the
methods specified in paragraph (e) of this section, calculate the sum
of the measured concentrations of each HAP analyzed as required in
paragraph (b)(1) of this section by using Equation 2 to this section.
* * * * *

Ci = Concentration of individual HAP present in the
stripped resin sample analyzed pursuant to paragraph (b)(1) of this
section excluding vinyl chloride, in ppmw, where a value of zero
should be used for any HAP concentration that is below the detection
limit.

    (g) Method for calculating alternative mass emission rates. If you
elect to demonstrate initial or continuous compliance with the
alternative mass emissions rates (g/kg) in Tables 1b and 2b of this
subpart, calculate the mass of the HAP emitted to the atmosphere of
vinyl chloride and each HAP analyzed as required in paragraph (b)(2) of
this section by using Equation 3 of this section.
[GRAPHIC] [TIFF OMITTED] TP09NO20.002

Ei = HAP emissions for individual HAP i, g/kg (lb/lb)
product.
Ci = Concentration of HAP i according to methods found in
Table 8 to this subpart and the procedures specified in Sec.
63.11945, in ppmv. A value of zero should be used for any HAP
concentration that is below the detection limit.
Di = Density of HAP i at standard conditions, kg/m\3\ (lb/ft\3\).
Q = Volumetric flow rate as determined by Method 2 of appendix A to
part 60 of this chapter, at standard conditions, m\3\/hr (ft\3\/hr).
K = Unit conversion factor, 1,000 g/kg (1 lb/lb).
10\-6\ = Conversion factor for ppm.
Z = Production rate of dry resin, kg/hr (lb/hr).

    (h) Method for calculating total non-vinyl chloride organic HAP
mass emission rates. If you elect to demonstrate initial or continuous
compliance with the alternative total non-vinyl chloride organic HAP
mass emissions rates (g/kg) in Tables 1b and 2b of this subpart,
calculate the sum of the mass emission rates of each HAP required in
paragraph (b)(2) of this section using the results from paragraph (g)
and Equation 4 of this section.
[GRAPHIC] [TIFF OMITTED] TP09NO20.005

ETNVCH = Mass emission rate of total non-vinyl chloride
organic HAP compounds in the stripped resin sample, in g/kg product
(lb/lb product).
Ei = Mass emission rate of individual HAP present in the
stripped resin sample analyzed pursuant to paragraph (b)(1) of this
section excluding vinyl chloride, in g/kg product (lb/lb product).

0
25. Section 63.11965 is amended by revising paragraphs (a), (b)(1)(i),
(b)(2), (c) through (e), (f) introductory text, and (f)(1)(i) and (ii)
to read as follows:

Sec.  63.11965  What are my general compliance requirements for
wastewater?

    (a) Emission limits. You must meet the emission limits specified in
Table 1, 1b, 2, or 2b to this subpart for each process wastewater
stream before being mixed with any other process wastewater stream,
before being exposed to the atmosphere, and before being discharged
from the affected source.
    (b) * * *
    (1) * * *
    (i) For treated process wastewater streams, you must collect
process wastewater samples at the outlet of the treatment process and
before the process wastewater stream is mixed with any other process
wastewater stream containing vinyl chloride or total non-vinyl chloride
organic HAP concentrations less than the applicable emission limits
specified in Table 1, 1b, 2, or 2b to this subpart, before being
exposed to the atmosphere, and before being discharged from the
affected source.
* * * * *

    (2) You must measure the concentration of vinyl chloride, and if
applicable, total non-vinyl chloride organic HAP, using the test
methods and procedures specified in Sec.  63.11980.
    (c) Requirements for process wastewater streams that must be
treated. You must treat each process wastewater stream that has a vinyl
chloride or total non-vinyl chloride organic HAP concentration equal to
or greater than the applicable emission limits specified in Table 1,
1b, 2, or 2b to this subpart as determined pursuant to paragraph (b) of
this section, to reduce the concentration below the applicable emission
limits specified in Table 1, 1b, 2, or 2b to this subpart. You must
route wastewater streams through hard-piping to the treatment process
and route the vent stream from the treatment process to a closed vent
system and control device meeting the requirements of Sec. Sec.
63.11925 through 63.11950. You must also meet the initial and
continuous compliance requirements specified in Sec. Sec.  63.11970(a)
and 63.11975(a) and (b).
    (d) Requirements for process wastewater streams that do not need to
be treated. For each process wastewater stream that has a vinyl
chloride or total non-vinyl chloride organic HAP concentration less
than the applicable emission limits specified in Table 1, 1b, 2, or 2b
to this subpart as determined pursuant to paragraph (b) of this
section, you must meet the initial and continuous compliance
requirements specified in Sec. Sec.  63.11970(b) and 63.11975(c).
    (e) Maintenance wastewater. You must comply with the requirements
specified in Sec.  63.105(b) and (c) for maintenance wastewater
containing Table 10 HAP (as defined in Sec.  63.12005).
    (f) Determination of total non-vinyl chloride organic HAP. If you
are subject to the emission limits specified in Table 1 or 2 to this
subpart, then you must develop a facility-specific list of HAP that are
expected to be present in each process wastewater stream at your PVCPU
and comply with paragraph (f)(1) of this section. This list must be
continuously updated and must be available for inspection by the
Administrator. This list must include the identification of each HAP
expected to be present in each process wastewater stream, and the CAS
number for each HAP.
    (1) * * *
    (i) You must analyze each process wastewater sample for all Table
10 HAP using the test methods specified in Sec.  63.11980(a)(2) and
(3).
    (ii) You must also analyze each process wastewater sample for any
HAP that are not Table 10 HAP but are expected to be present in that
sample based on your facility-specific list of HAP using the
appropriate test method specified in Sec.  63.11980(a)(2).
* * * * *
0
26. Section 63.11970 is revised to read as follows:

Sec.  63.11970  What are my initial compliance requirements for process
wastewater?

    (a) Demonstration of initial compliance for process wastewater
streams that must be treated. For each process wastewater stream that
must be treated as specified in Sec.  63.11965(b) and (c), you must
conduct an initial performance test for the wastewater treatment
process, measuring the concentration of vinyl chloride, and if
applicable, total non-vinyl chloride organic HAP, in the wastewater
stream at the outlet of the wastewater treatment process before the
wastewater is exposed to the atmosphere, mixed with any other process
stream, and before being discharged from the affected facility, using
the test method and procedures specified in Sec.  63.11980(a).
    (b) Demonstration of initial compliance for process wastewater
streams that are not required to be treated. For each process
wastewater stream that has a vinyl chloride or total non-vinyl chloride
organic HAP concentration less than the applicable emission limits
specified in Tables 1, 1b, 2, or 2b to this subpart, you must use the
collection and measurement procedures specified in Sec.
63.11965(b)(1)(ii) and (b)(2) to demonstrate initial compliance.
0
27. Section 63.11975 is revised to read as follows:

Sec.  63.11975  What are my continuous compliance requirements for
process wastewater?

    (a) For each process wastewater stream that must be treated as
specified in Sec.  63.11965(b) and (c), you must demonstrate continuous
compliance as specified in paragraph (b) of this section. For each
process wastewater stream for which you initially determine in Sec.
63.11970(b) that treatment is not required, you must demonstrate
continuous compliance as specified in paragraph (c) of this section.
    (b) For each process wastewater stream that must be treated
according to Sec.  63.11965(b) and (c), you must demonstrate continuous
compliance with the emission limits specified in Table 1, 1b, 2, or 2b
to this subpart by following the procedures specified in paragraphs
(b)(1) and (2) of this section.
    (1) Following your demonstration of initial compliance in Sec.
63.11970(a), make monthly measurements of the vinyl chloride, and if
applicable, total non-vinyl chloride organic HAP, concentrations using
the procedures and methods specified in Sec.  63.11965(b)(1)(i) and
(b)(2).
    (2) You must demonstrate continuous compliance with the emission
limits in Table 1, 1b, 2, or 2b to this subpart on a monthly basis,
using the monthly concentration measurement specified in paragraph
(b)(1) of this section.
    (c) For each wastewater stream for which you initially determine in
Sec.  63.11970(b) that treatment is not required, you must demonstrate
continuous compliance as specified in paragraphs (c)(1) and (2) of this
section.
    (1) Conduct annual performance tests, measuring the vinyl chloride,
and if applicable, total non-vinyl chloride organic HAP concentrations
using the procedures and methods specified in Sec.  63.11965(b)(1)(ii)
and (b)(2).
    (2) If any annual performance test conducted as specified in
paragraph (c)(1) of this section results in a concentration of vinyl
chloride or total non-vinyl chloride organic HAP in the process
wastewater stream that is greater than or equal to the applicable
emission limits in Table 1, 1b, 2, or 2b to this subpart, then you must
meet the requirements of Sec.  63.11965(c) and you must demonstrate
initial and continuous compliance as specified in Sec.  63.11970 and
this section.
0
28. Section 63.11980 is amended by revising paragraphs (a) introductory
text, (a)(1), and (b) introductory text to read as follows:

Sec.  63.11980  What are the test methods and calculation procedures
for process wastewater?

    (a) Performance test methods and procedures. You must determine the
concentration of vinyl chloride, and if applicable, total non-vinyl
chloride organic HAP, using the test methods and procedures specified
in paragraphs (a)(1) through (4) of this section. Upon request, the
owner or operator shall make available to the Administrator such
records as may be necessary to determine the conditions of performance
tests.
    (1) You must conduct performance tests during worst-case operating
conditions for the PVCPU when the process wastewater treatment process
is operating as close as possible to maximum representative operating
conditions. If the wastewater treatment process will be operating at
several different sets of operating conditions, you must supplement the
testing with

additional testing, modeling, or engineering assessments to demonstrate
compliance with the emission limits.
* * * * *
    (b) Method for calculating total non-vinyl chloride organic HAP
concentration. If you are subject to the emission limits specified in
Table 1 or 2 to this subpart, then for each process wastewater stream
analyzed using the methods specified in paragraph (a) of this section,
calculate the sum of the measured concentrations of each HAP analyzed
as required in Sec.  63.11965(f)(1) by using Equation 1 to this
section.
* * * * *
0
29. Section 63.11985 is amended by:
0
a. Revising paragraphs (a)(4), (a)(7)(ii), (a)(8)(i) and (ii),
(b)(4)(i) introductory text, (b)(4)(i)(A), (b)(6) through (8), (b)(10)
introductory text, and (b)(10)(v);
0
b. Removing and reserving paragraph (b)(11); and
0
c. Revising paragraphs (b)(12), (c)(1), (2), and (8) and (c)(9)(i) and
(ii).
    The revisions read as follows:

Sec.  63.11985  What notifications and reports must I submit and when?

* * * * *
    (a) * * *
    (4) You must include the operating limit for each monitoring
parameter identified for each control device used to meet the emission
limits in Table 1, 1b, 2, or 2b to this subpart, as determined pursuant
to Sec.  63.11935(d). This report must include the information in Sec.
63.11935(d)(2), as applicable.
* * * * *
    (7) * * *
    (ii) You must include results of the initial testing used to
determine initial compliance with the stripped resin limits in Table 1,
1b, 2, or 2b to this subpart.
    (8) * * *
    (i) You must include an identification of each process wastewater
stream subject to the requirements of this subpart, and the results of
your determination for each stream as to whether it must be treated to
meet the limits of Table 1, 1b, 2, or 2b to this subpart. You must also
include a description of the treatment process to be used for each
process wastewater stream that requires treatment.
    (ii) You must include results of the initial sampling used to
determine initial compliance with the vinyl chloride limits in Table 1,
1b, 2, or 2b to this subpart.
* * * * *
    (b) * * *
    (4) * * *
    (i) Deviations using CEMS or CPMS. For each deviation from an
emission limit or operating limit where a CEMS or CPMS is being used to
comply with the process vent emission limits in Table 1, 1b, 2, or 2b
to this subpart, you must include the information in paragraphs
(b)(4)(i)(A) through (E) of this section.
    (A) For CEMS, the 3-hour block average value calculated for any
period when the value is higher than an emission limit in Table 1, 1b,
2, or 2b to this subpart or when the value does not meet the data
availability requirements defined in Sec.  63.11890(c).
* * * * *
    (6) You must include the records specified in Sec.  63.11990(j)(2)
for other emission sources.
    (7) For resin stripper operations, you must include the daily vinyl
chloride and/or monthly total non-vinyl chloride organic HAP
concentration or alternative mass emission rate results for each resin
type produced within the PVCPU that did not meet the stripped resin
emission limits in Table 1, 1b, 2, or 2b to this subpart, as
applicable.
    (8) For wastewater operations, you must include the results of
monthly vinyl chloride and, if applicable, monthly total non-vinyl
chloride organic HAP concentration results for each process wastewater
stream discharged from the affected source that did not meet the
process wastewater emission limits in Tables 1, 1b, 2, or 2b to this
subpart.
* * * * *
    (10) If any pressure vessel closure device or closed vent system
that contains a bypass has directly discharged to the atmosphere, or
any closed vent system that is designed to be in vacuum service and is
operating and not in vacuum service, as specified in Sec.
63.11910(c)(3) or Sec.  63.11930(c) or (h), you must submit to the
Administrator the following information:
* * * * *
    (v) The measures adopted to prevent future such discharges.
* * * * *
    (12) Information required by this subpart, which is submitted with
a Title V periodic report, does not need to be included in a subsequent
compliance report required by this subpart or subpart referenced by
this subpart. The Title V report must be referenced in the compliance
report required by this subpart.
* * * * *
    (c) * * *
    (1) Notification of inspection. To provide the Administrator the
opportunity to have an observer present, you must notify the
Administrator at least 30 days before an inspection required by Sec.
63.11910(a)(3). If an inspection is unplanned and you could not have
known about the inspection 30 days in advance, then you must notify the
Administrator at least 7 days before the inspection. Notification must
be made by telephone immediately followed by written documentation
demonstrating why the inspection was unplanned. Alternatively, the
notification including the written documentation may be made in writing
and sent so that it is received by the Administrator at least 7 days
before the inspection. If a delegated state or local agency is
notified, you are not required to notify the Administrator. A delegated
state or local agency may waive the requirement for notification of
storage vessel inspections.
    (2) Batch pre-compliance report. You must submit a batch pre-
compliance report at least 6 months prior to the compliance date of
this subpart (see Sec.  63.11875) that includes a description of the
test conditions, data, calculations and other information used to
establish operating limits according to Sec.  63.11935(d) for all batch
operations. If you use an engineering assessment as specified in Sec.