[Federal Register Volume 85, Number 141 (Wednesday, July 22, 2020)]
[Rules and Regulations]
[Pages 44192-44206]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-14471]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R09-OAR-2019-0318; FRL-10011-44-Region 9]


Clean Air Plans; 2006 Fine Particulate Matter Nonattainment Area 
Requirements; San Joaquin Valley, California

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA or ``Agency'') is 
approving portions of three state implementation plan (SIP) revisions 
submitted by the State of California to meet Clean Air Act (CAA or 
``Act'') requirements for the 2006 fine particulate matter 
(PM2.5) national ambient air quality standards (NAAQS or 
``standards'') in the San Joaquin Valley (SJV) ``Serious'' 
nonattainment area. Specifically, the EPA is approving those portions 
of the ``2018 Plan for the 1997, 2006, and 2012 PM2.5 
Standards'' and the ``San Joaquin Valley Supplement to the 2016 State 
Strategy for the State Implementation Plan'' that pertain to the 2006 
PM2.5 NAAQS and address certain CAA requirements for Serious 
PM2.5 nonattainment areas. In addition, the EPA is approving 
the ``Revision to the California State Implementation Plan for 
PM2.5 Standards in the San Joaquin Valley'' 
(``PM2.5 Prior Commitment Revision'' or ``Revision'') and 
finding that the State has complied with this commitment. The EPA is 
also approving motor vehicle emission budgets and inter-pollutant 
trading ratios for use in transportation conformity analyses for the 
2006 PM2.5 NAAQS. Finally, as part of this action, the EPA 
is granting an extension of the Serious area attainment date for the 
2006 PM2.5 NAAQS in the San Joaquin Valley from December 31, 
2019, to December 31, 2024, based on a determination that the State has

[[Page 44193]]

satisfied the statutory criteria for this extension.

DATES: This rule is effective August 21, 2020.

ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-R09-OAR-2019-0318. All documents in the docket are 
listed on the https://www.regulations.gov website. Although listed in 
the index, some information is not publicly available, e.g., 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Certain other material, such as 
copyrighted material, is not placed on the internet and will be 
publicly available only in hard copy form. Publicly available docket 
materials are available through https://www.regulations.gov, or please 
contact the person identified in the FOR FURTHER INFORMATION CONTACT 
section for additional availability information.

FOR FURTHER INFORMATION CONTACT: Rory Mays, Air Planning Office (AIR-
2), EPA Region IX, (415) 972-3227, [email protected].

SUPPLEMENTARY INFORMATION: Throughout this document, ``we,'' ``us,'' 
and ``our'' refer to the EPA.

Table of Contents

I. Summary of Proposed Rules
II. Public Comments and EPA Responses
III. Final Action
IV. Statutory and Executive Order Reviews

I. Summary of Proposed Rules

    On March 27, 2020, the EPA proposed to approve portions of two SIP 
revisions submitted by the California Air Resources Board (CARB) to 
meet certain Serious nonattainment area requirements for the 2006 24-
hour PM2.5 NAAQS in the San Joaquin Valley.\1\ In our 
proposed rule, we provided background information on the 
PM2.5 standards, area designations and related SIP revision 
requirements under the CAA, relevant EPA guidance, and the EPA's 
implementing regulations for the PM2.5 standards, referred 
to as the ``PM2.5 SIP Requirements Rule.'' \2\
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    \1\ 85 FR 17382.
    \2\ ``Fine Particulate Matter National Ambient Air Quality 
Standards: State Implementation Plan Requirements.'' (August 24, 
2016).
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    The EPA proposed to act on certain portions of the following two 
plan submissions that pertain to the 2006 24-hour PM2.5 
NAAQS: The ``2018 Plan for the 1997, 2006, and 2012 PM2.5 
Standards,'' adopted by the San Joaquin Valley Unified Air Pollution 
Control District (SJVUAPCD or District'') on November 15, 2018, and by 
CARB on January 24, 2019 (``2018 PM2.5 Plan''), including a 
revised Appendix H submitted by CARB as a technical correction on 
February 11, 2020; and the ``San Joaquin Valley Supplement to the 2016 
State Strategy for the State Implementation Plan,'' adopted by CARB on 
October 25, 2018 (``Valley State SIP Strategy''). We refer to the 
relevant portions of these SIP submissions collectively as the ``SJV 
PM2.5 Plan'' or ``Plan.'' The SJV PM2.5 Plan 
addresses the Serious area attainment plan requirements for the 2006 
24-hour PM2.5 NAAQS in the San Joaquin Valley and includes a 
request under CAA section 188(e) for an extension of the Serious area 
attainment date for the area for this NAAQS. CARB submitted the SJV 
PM2.5 Plan to the EPA as a revision to the SIP on May 10, 
2019.\3\
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    \3\ Letter dated May 9, 2019, from Richard Corey, Executive 
Officer, CARB, to Mike Stoker, Regional Administrator, EPA Region 9.
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    The EPA proposed to approve, as a revision to the California SIP, 
the following portions of the SJV PM2.5 Plan for the 2006 
PM2.5 NAAQS:
     The 2013 base year emission inventories (CAA section 
172(c)(3));
     The demonstration that best available control measures 
(BACM), including best available control technology (BACT), for the 
control of direct PM2.5 and PM2.5 plan precursors 
will be implemented no later than 4 years after the area was 
reclassified (CAA section 189(b)(1)(B));
     The demonstration (including air quality modeling) that 
the Plan provides for attainment as expeditiously as practicable but no 
later than December 31, 2024 (CAA sections 189(b)(1)(A) and 188(e));
     Plan provisions that require reasonable further progress 
(RFP) toward attainment by the applicable date (CAA section 172(c)(2));
     Quantitative milestones that are to be achieved every 
three years until the area is redesignated attainment and that 
demonstrate RFP toward attainment by the applicable attainment date 
(CAA section 189(c));
     Motor vehicle emissions budgets for 2020, 2023, and 2024 
as shown in Table 14 of the EPA's proposed rule (CAA section 176(c) and 
40 CFR part 93, subpart A); \4\ and
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    \4\ In light of CARB's request to limit the duration of the 
approval of the budgets in the 2018 PM2.5 Plan and in 
anticipation of the EPA's approval, in the near term, of an updated 
version of CARB's EMFAC (short for EMission FACtor) model for use in 
SIP development and transportation conformity in California to 
include updated vehicle mix and emissions data, we proposed to limit 
the duration of our approval of the budgets to the period before 
replacement budgets have been found adequate. 85 FR 17382, 17428-
17430.
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     The inter-pollutant trading mechanism provided for use in 
transportation conformity analyses for the 2006 PM2.5 NAAQS, 
in accordance with 40 CFR 93.124(b).
    We did not propose any action on the contingency measure element of 
the SJV PM2.5 Plan.
    The EPA also proposed to grant the State's request for extension of 
the Serious area attainment date from December 31, 2019, to December 
31, 2024, based on a conclusion that the State has satisfied the 
requirements for such extensions in section 188(e) of the Act. To 
support this proposal, we proposed to find that the SJVUAPCD had 
complied with its aggregate commitment in the 2012 PM2.5 
Plan to achieve total emission reductions of 1.9 tons per day (tpd) of 
direct PM2.5 by 2017.\5\ We also noted, however, that the 
2018 PM2.5 Plan included updated emissions inventories for 
the residential wood burning source category that differed from 
previous inventory estimates and showed a 0.86 tpd reduction in winter 
season direct PM2.5 emissions from wood burning devices 
between 2013 and 2017.\6\ We sought comment as to whether the State and 
District had met their commitment. In response to the EPA's proposed 
finding and request for comment, CARB developed the PM2.5 
Prior Commitment Revision to revise the State's aggregate commitment in 
the 2012 PM2.5 Plan to reflect the updated inventories 
submitted in the 2018 PM2.5 Plan and submitted it to the EPA 
on April 24, 2020, for parallel processing. In a supplemental proposal 
published May 12, 2020, the EPA proposed to approve the 
PM2.5 Prior Commitment Revision via parallel processing and 
proposed to determine that the State has met the 0.86 tpd 
commitment.\7\
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    \5\ 85 FR 17382, 17409.
    \6\ Id. See also, 2018 PM2.5 Plan, App. C, C-257 and 
letter dated August 12, 2019, from Richard W. Corey, Executive 
Officer, CARB, to Mike Stoker, Regional Administrator, EPA Region 
IX, transmitting ``Attachment: Supplemental Information and 
Clarifications to 2017 Quantitative Milestones.''
    \7\ 85 FR 27976 (May 12, 2020).
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    On June 19, 2020, CARB submitted the final version of the 
PM2.5 Prior Commitment Revision. We have reviewed this 
submittal and find that it fulfills the SIP completeness criteria of 40 
CFR part 51, appendix V. The SIP submission also includes evidence that 
adequate public notice was given and that an opportunity for a public 
hearing was provided consistent with the EPA's implementing regulations 
in 40 CFR 51.102. Specifically, CARB provided public notice and 
opportunity for public

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comment prior to its May 28, 2020 public hearing on and adoption of the 
PM2.5 Prior Commitment Revision.\8\ The SIP submission 
includes proof of publication of notices for the public hearing and 
includes copies of the written and oral comments received during the 
State's public review processes and CARB's responses thereto.\9\ 
Therefore, we find that the PM2.5 Prior Commitment Revision 
meets the procedural requirements for public notice and hearing in CAA 
sections 110(a) and 110(l) and 40 CFR 51.102.
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    \8\ California Air Resources Board, ``Notice of Public Meeting 
to Consider Adoption of a Technical Revision to the San Joaquin 
Valley PM2.5 State Implementation Plan,'' dated April 24, 
2020.
    \9\ J&K Court Reporting, LLC, ``Videoconference Meeting, State 
of California Air Resources Board,'' May 28, 2020 (transcript of 
CARB's public hearing), and ``Responses to Comments Received on the 
Technical Revision to the San Joaquin Valley PM2.5 State 
Implementation Plan.''
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    Our proposed rule, supplemental proposal, and associated technical 
support documents (TSDs) \10\ provide a more detailed discussion of the 
rationale for our proposed actions.
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    \10\ The docket includes the following four technical support 
documents for the March 27, 2020 proposed rule: (1) ``Technical 
Support Document, General Evaluation, San Joaquin Valley 
PM2.5 Plan for the 2006 PM2.5 NAAQS,'' 
February 2020 (``EPA's General Evaluation TSD''); (2)``Technical 
Support Document, EPA Evaluation of PM2.5 Precursor 
Demonstration, San Joaquin Valley PM2.5 Plan for the 2006 
PM2.5 NAAQS,'' February 2020 (``EPA's PM2.5 
Precursor TSD''); (3) ``Technical Support Document, EPA Evaluation 
of BACM/MSM, San Joaquin Valley PM2.5 Plan for the 2006 
PM2.5 NAAQS,'' February 2020 (``EPA's BACM/MSM TSD''); 
and (4) ``Technical Support Document, EPA Evaluation of Air Quality 
Modeling, San Joaquin Valley PM2.5 Plan for the 2006 
PM2.5 NAAQS,'' February 2020 (``EPA's Modeling TSD'').
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II. Public Comments and EPA Responses

    The public comment period on the EPA's March 27, 2020 proposed rule 
closed on April 27, 2020. During this period, the EPA received two 
letters requesting a 30-day extension of the comment period on our 
proposed rule.\11\ The EPA denied these requests for extension of the 
comment period because our statutory timeframe for considering 
California's request for an extended attainment date under section 
188(e) of the CAA for the 2006 PM2.5 NAAQS for the San 
Joaquin Valley ends on June 30, 2020.\12\
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    \11\ Letter received April 6, 2020, from Mark Rose, Sierra 
Nevada Program Manager, National Parks Conservation Association 
(NPCA) and Nayamin Martinez, Executive Director, Central California 
Environmental Justice Network (CCEJN) to Rory Mays, EPA; and letter 
received April 15, 2020, from Catherina Garoupa White, Executive 
Director, CVAQ, et al. to Rory Mays, EPA.
    \12\ Email dated April 8, 2020, from Rory Mays, EPA to Mark 
Rose, Sierra Nevada Program Manager, NPCA and Nayamin Martinez, 
Executive Director, CCEJN; and email dated April 21, 2020, from Rory 
Mays, EPA to Catherine Garoupa White, Executive Director, CVAQ, et 
al.
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    The EPA received four comment submissions on the EPA's March 27, 
2020 proposed rule, from the following entities: (1) An anonymous 
commenter,\13\ (2) the SJVUAPCD,\14\ (3) a coalition of seven 
environmental and community organizations (collectively referred to 
herein as ``NPCA''),\15\ and (4) the California Safflower Growers 
Association (CSGA).\16\
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    \13\ Anonymous comment received March 29, 2020.
    \14\ Comment letter dated and received April 27, 2020, from 
Samir Sheikh, Executive Officer/APCO, SJVUAPCD to Administrator 
Wheeler, EPA.
    \15\ Comment letter dated and received April 27, 2020, from Mark 
Rose, NPCA, et al. to Rory Mays, EPA, including Appendices A through 
G. The seven environmental and community organizations, in order of 
appearance in the letter, are NPCA, Earthjustice, Central Valley Air 
Quality Coalition, Coalition for Clean Air, Central Valley 
Environmental Justice Network, The Climate Center, and Central 
Valley Asthma Collaborative (collectively ``NPCA'').
    \16\ Comment letter dated and received April 27, 2020, from 
Laura Brown, Executive Director, California Safflower Growers 
Association to Rory Mays, EPA.
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    The public comment period on the EPA's May 12, 2020 supplemental 
proposal closed on June 11, 2020. During this period, the EPA received 
one comment submission from a private citizen.\17\
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    \17\ Email dated June 10, 2020, from Thomas Menz to Rory Mays, 
EPA Region IX, with attachments.
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    We respond below to a selection of the most significant comments on 
our March 27, 2020 proposed rule. We respond to all other comments that 
are germane to the proposed rule and all comments on the supplemental 
proposal in our separate Response to Comments document available at 
https://www.regulations.gov, Docket ID No. EPA-R09-OAR-2019-0318.
    Comment 1: NPCA claims that the EPA's approval of the State's and 
District's aggregate commitments in the SJV PM2.5 Plan would 
be arbitrary and capricious. Specifically, NPCA states that, although 
the vast majority of these tonnage commitments are to be achieved 
through incentive programs to accelerate the turnover of mobile 
sources, most of the EPA's discussion for finding these commitments 
reasonable focuses on the rulemaking commitments that provide 
relatively little toward meeting these aggregate tons of emission 
reductions. NPCA also states that the bulk of the aggregate tonnage 
commitments rely on unfunded incentive measures that the EPA proposes 
to approve with no record to support their likelihood of success.
    Response 1: For the reasons provided in Response 2 through Response 
3.C below, and further in our Response to Comments document, we 
disagree with NPCA's claim that our approval of the aggregate 
commitments in the Plan would be arbitrary and capricious.
    We also disagree with NPCA's suggestion that the vast majority of 
the aggregate tonnage commitments must necessarily be achieved through 
incentive programs. As we explained in our proposed rule, CARB has 
committed to present to its Board each of 15 regulatory and incentive-
based control measures listed in Attachment A to the resolution of 
adoption (i.e., Resolution 18-49), according to the schedule set forth 
in Attachment A,\18\ and to achieve a total of 32 tpd of NOX 
emissions reductions and 0.9 tpd of PM2.5 emissions 
reductions in the San Joaquin Valley by 2024 either through the listed 
measures or through appropriate substitute measures.\19\ Although the 
Valley State SIP Strategy indicates that CARB anticipates achieving 23 
tpd of the necessary NOX emission reductions and 0.8 tpd of 
the necessary PM2.5 emissions reductions through 
implementation of the incentive-based measures listed in Attachment 
A,\20\ CARB has not specifically committed to adopt any of these listed 
measures and may ultimately achieve the required emission reductions 
through adoption and implementation of other enforceable control 
measures. By email dated November 12, 2019, CARB identified a number of 
potential additional State measures on which it intends to begin public 
rule development processes this year, including a Tier 5 offroad diesel 
engine standard, a ``state green contracting'' measure, and a 
``reduction in growth of single-occupancy vehicle travel'' measure.\21\ 
Under the terms of its commitment, CARB may adopt and implement any of 
these new control measures or other substitute measures to achieve its 
aggregate tonnage commitment.
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    \18\ The list of proposed SIP measures included in Attachment A 
to CARB Resolution 18-49 is also provided in tables 7 and 8 of the 
Valley State SIP Strategy and in tables 4-8 and 4-9 of the 2018 
PM2.5 Plan. See also, 85 FR 17382, 17413-17414 (Table 7).
    \19\ CARB Resolution 18-49 (October 25, 2018), 5. See also 85 FR 
17382, 17413.
    \20\ Valley State SIP Strategy, 38 (Table 8) (identifying 
expected emission reductions from proposed State measures).
    \21\ Email dated November 12, 2019, from Sylvia Vanderspek, CARB 
to Anita Lee, EPA Region IX, ``RE: SJV PM2.5 
information'' (attaching ``Valley State SIP Strategy Progress'').
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    Similarly, the District has committed to present to its Board each 
of 12 regulatory and incentive-based control measures listed in Table 
4-4 and Table 4-5 of the 2018 PM2.5 Plan, according to

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the schedule set forth in those tables,\22\ and to ``achieve the 
aggregate emissions reductions of 1.88 tpd of NOX and 1.3 
tpd of PM2.5 by 2024/2025'' through adoption and 
implementation of these listed measures or appropriate substitute 
control measures ``in the same implementation timeframes or in the 
timeframes needed to meet CAA milestones.'' \23\ The 2018 
PM2.5 Plan provides, in Table 4-3, anticipated emission 
reductions for each of the nine District rules listed in Table 4-4 but 
does not quantify the emission reductions anticipated from 
implementation of the incentive-based measures listed in Table 4-5. 
Like CARB, the District has not specifically committed to adopt any of 
the listed measures and may ultimately achieve the required emission 
reductions through adoption and implementation of other enforceable 
control measures.
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    \22\ See also 85 FR 17382, 17414-17415 (Table 8).
    \23\ SJVUAPCD Governing Board Resolution 18-11-16 (November 15, 
2018), 10-11. See also 85 FR 17382, 17413.
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    Thus, CARB and the SJVUAPCD will not necessarily achieve the 
aggregate tonnage commitments through incentive programs, as NPCA 
suggests. Instead, although both CARB and the SJVUAPCD must take action 
to develop and propose specific regulatory and incentive-based measures 
identified in the Plan, they may ultimately elect to meet the 
NOX and PM2.5 aggregate tonnage commitments 
through adoption and implementation of these listed measures or 
appropriate substitute control measures by January 1, 2024. See 
Response 2.
    Finally, NPCA states that the bulk of the aggregate tonnage 
commitments rely on unfunded incentive measures that the EPA ``proposes 
to approve with no record to support their likelihood of success.'' To 
the extent NPCA intended to assert that the EPA has proposed to approve 
all of the incentive-based measures listed in the State's and 
District's control measure commitments, this is factually incorrect. 
The EPA proposed to approve the State's and District's commitments to 
take action with respect to the listed measures, including the 
identified incentive-based measures, and to achieve emission reductions 
by 2024. To date, the EPA has proposed to approve only one of the three 
incentive-based measures listed in CARB's control measure commitment 
(i.e., the ``Agricultural Equipment Incentive Measure'' or ``Valley 
Incentive Measure'') \24\ and has not yet proposed action on any of the 
other incentive-based measures that CARB or the District have committed 
to develop and present to their respective boards, as neither agency 
has yet adopted and submitted any such additional measures.
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    \24\ 85 FR 16588 (March 24, 2020) (proposal to approve Valley 
Incentive Measure).
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    To the extent NPCA intended to argue, with respect to the Valley 
Incentive Measure, that the EPA is proposing to approve this measure 
with no record to support its likelihood of success, this comment is 
outside the scope of this action. The EPA proposed to approve the 
Valley Incentive Measure in a separate rulemaking \25\ and will respond 
to all comments received on that proposal, as appropriate, in a 
separate final rule.
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    \25\ Id.
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    Comment 2: NPCA states that the aggregate emission reduction 
commitments are not enforceable as required by section 110(a)(2)(A) of 
the CAA. Citing an EPA memorandum to the docket for a rulemaking 
entitled ``State Implementation Plans: Response to Petition for 
Rulemaking; Finding of Substantial Inadequacy; and SIP Calls to Amend 
Provisions Applying to Excess Emissions During Periods of Startup, 
Shutdown, and Malfunction,'' NPCA states that to be ``enforceable,'' a 
measure must be enforceable by the state, the EPA, and citizens. NPCA 
also states that the mere approval of a measure into the SIP does not 
convert an unenforceable provision into an enforceable one, and that 
the EPA's SIP rulemaking must explain how the aggregate emission 
reduction commitments can be enforced.
    Response 2: We agree with NPCA's statement that the mere approval 
of a measure into the SIP does not convert an unenforceable provision 
into an enforceable one, but we disagree with NPCA's claim that the 
aggregate commitments in the SJV PM2.5 Plan are not 
enforceable. We explain below how the EPA and citizens may enforce the 
provisions of CARB's and the District's respective SIP commitments in 
the SJV PM2.5 Plan. We respond to NPCA's more specific 
comments concerning enforceability in our responses to comments 2.A 
through 2.E, in the Response to Comments document.
    Under CAA section 110(a)(2)(A), SIPs must include enforceable 
emission limitations and other control measures, means or techniques 
necessary to meet the requirements of the Act, as well as timetables 
for compliance. Similarly, section 172(c)(6) provides that 
nonattainment area SIPs must include enforceable emission limitations 
and such other control measures, means or techniques as may be 
necessary or appropriate to provide for attainment of the NAAQS by the 
applicable attainment date.
    Control measures, including commitments in SIPs, are enforced 
through CAA section 304(a), which provides for citizen suits to be 
brought against any ``person,'' including a state,\26\ who is alleged 
``to be in violation of . . . an emission standard or limitation. . . 
.'' ``Emission standard or limitation'' is defined in subsection (f) of 
section 304.\27\ As observed in Conservation Law Foundation, Inc. v. 
James Busey et al., 79 F.3d 1250, 1258 (1st Cir. 1996):
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    \26\ CAA section 302(e) (defining ``person'' to include a State 
or political subdivision thereof).
    \27\ Section 304(f) of the CAA defines ``emission standard or 
limitation,'' in relevant part, to mean ``a schedule or timetable of 
compliance'' which is in effect under the Act ``or under an 
applicable implementation plan.'' Section 302(p) of the Act defines 
``schedule and timetable of compliance'' to mean ``a schedule of 
required measures including an enforceable sequence of actions or 
operations leading to compliance with an emission limitation, other 
limitation, prohibition, or standard.'' Section 302(q) of the Act 
defines ``[a]pplicable implementation plan,'' in relevant part, as 
``the portion (or portions) of the implementation plan, or most 
recent revision thereof, which has been approved under section 110 
of [title I of the Act]. . . and which implements the relevant 
requirements of [the Act].''

    Courts interpreting citizen suit jurisdiction have largely 
focused on whether the particular standard or requirement plaintiffs 
sought to enforce was sufficiently specific. Thus, interpreting 
citizen suit jurisdiction as limited to claims ``for violations of 
specific provisions of the act or specific provisions of an 
applicable implementation plan,'' the Second Circuit held that suits 
can be brought to enforce specific measures, strategies, or 
commitments designed to ensure compliance with the NAAQS, but not to 
enforce the NAAQS directly. See, e.g., Wilder, 854 F.2d at 613-14. 
Courts have repeatedly applied this test as the linchpin of citizen 
suit jurisdiction. See, e.g., Coalition Against Columbus Ctr. v. 
City of New York, 967 F.2d 764, 769-71 (2d Cir. 1992); Cate v. 
Transcontinental Gas Pipe Line Corp., 904 F. Supp. 526, 530-32 (W.D. 
Va. 1995); Citizens for a Better Env't v. Deukmejian, 731 F. Supp. 
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1448, 1454-59 (N.D. Cal.), modified, 746 F. Supp. 976 (1990).

    Thus, courts have found that the citizen suit provision cannot be 
used to enforce the aspirational goal of attaining the NAAQS but can be 
used to enforce specific strategies to achieve that goal.\28\
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    \28\ See also Committee for a Better Arvin, et al. v. EPA, 786 
F.3d 1169, 1181 (9th Cir. 2015) (finding that California's 
commitments to propose and adopt emission control measures and to 
achieve aggregate emission reductions are enforceable ``emission 
standards or limitations'' under the CAA).
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    SIP control measures and commitments may also be enforced by the 
EPA under section 113(a)(1) of the Act, which authorizes the EPA to 
issue notices and compliance orders, assess administrative penalties, 
and bring civil

[[Page 44196]]

actions against any ``person,'' including a state, who ``has violated 
or is in violation of any requirement or prohibition of an applicable 
implementation plan. . . .'' \29\
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    \29\ CAA section 113(a)(1)-(2) (establishing EPA's SIP 
enforcement authorities), section 302(e) (defining ``person'' to 
include a state or political subdivision thereof), and section 
302(q) (defining ``applicable implementation plan'' to include the 
portion(s) of the implementation plan approved under CAA section 110 
that implement relevant CAA requirements).
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    CARB's commitments are contained in CARB Resolution 18-49 (October 
25, 2018) and the Valley State SIP Strategy and consist of two parts: a 
control measure commitment and an aggregate tonnage commitment.\30\ 
CARB's control measure commitment is to ``begin the measure's public 
process and bring to the Board for consideration the list of proposed 
SIP measures outlined in the Valley State SIP Strategy and included in 
Attachment A, according to the schedule set forth.'' \31\ By email 
dated November 12, 2019, CARB clarified that it intended to begin the 
public process on each listed measure by discussing the proposed 
regulation or program at a public meeting (workshop, working group, or 
Board hearing) or in a publicly-released document, after which it would 
propose the regulation or program to its Board.\32\ CARB's aggregate 
tonnage commitment is ``to achieve the aggregate emissions reductions 
outlined in the Valley State SIP Strategy of 32 tpd of NOX 
and 0.9 tpd of PM2.5 emissions reductions in the San Joaquin 
Valley by 2024.'' \33\ In the Valley State SIP Strategy, CARB describes 
this commitment as a ``commitment for new emission reductions'' that 
the State must achieve by 2024 through implementation of control 
measures, incentive-based measures, or other enforceable measures.\34\ 
CARB further describes its aggregate tonnage commitment in the Valley 
State SIP Strategy as follows:
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    \30\ 85 FR 17382, 17413.
    \31\ CARB Resolution 18-49 (October 25, 2018), 5. The list of 
proposed SIP measures included in Attachment A to CARB Resolution 
18-49 is also provided in tables 7 and 8 of the Valley State SIP 
Strategy and in tables 4-8 and 4-9 of the 2018 PM2.5 
Plan.
    \32\ Email dated November 12, 2019, from Sylvia Vanderspek, CARB 
to Anita Lee, EPA Region IX, ``RE: SJV PM2.5 
information'' (attaching ``Valley State SIP Strategy Progress'') and 
CARB Staff Report, 14.
    \33\ CARB Resolution 18-49 (October 25, 2018), 5.
    \34\ Valley State SIP Strategy, 35 and 37.

    While Table 8 [of the Valley State SIP Strategy] includes 
estimates of the emission reductions from each of the individual 
measures, final measures as proposed by staff to the Board or 
adopted by the Board may provide more or less than the initial 
emission reduction estimates. CARB's overall commitment is to 
achieve the total emission reductions necessary to attain the 
federal air quality standards while reflecting the combined 
reductions from the existing control strategy and new measures. 
Therefore, if a particular measure does not get its expected 
emission reductions, the State is still committed to achieving the 
total aggregate emission reductions. If actual emission decreases 
occur that exceed the projections reflected in the current emissions 
inventory and the Valley State SIP Strategy, CARB will submit an 
updated emissions inventory to U.S. EPA as part of a SIP revision. 
The SIP revision would outline the changes that have occurred and 
provide appropriate tracking to demonstrate that aggregate emission 
reductions sufficient for attainment are being achieved through 
enforceable emission reduction measures.\35\
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    \35\ Id. at 37.

    The District's commitments are contained in SJVUAPCD Governing 
Board Resolution 18-11-16 (November 15, 2018) and Chapter 4 of the 2018 
PM2.5 Plan and similarly consist of two parts: A control 
measure commitment and an aggregate tonnage commitment.\36\ The control 
measure commitment is to ``take action on the rules and measures 
committed to in Chapter 4 of the Plan by the dates specified therein, 
and to submit these rules and measures, as appropriate, to CARB within 
30 days of adoption for transmittal to EPA as a revision to the 
[SIP].'' \37\ By email dated November 12, 2019, the District clarified 
that it intended to take action on the rules and measures listed in 
Chapter 4 of the 2018 PM2.5 Plan by beginning the public 
process on each measure, i.e., discussing the proposed regulation or 
program at a public meeting, including a workshop, working group, or 
Board hearing, or in a publicly-released document, after which it would 
propose the rule or measure to the SJVUAPCD Governing Board.\38\ The 
District's aggregate tonnage commitment is to ``achieve the aggregate 
emissions reductions of 1.88 tpd of NOX and 1.3 tpd of 
PM2.5 by 2024/2025'' through adoption and implementation of 
these measures or, if the total emission reductions from these rules or 
measures are less than these amounts, ``to adopt, submit, and implement 
substitute rules and measures that achieve equivalent reductions in 
emissions of direct PM2.5 or PM2.5 precursors in 
the same implementation timeframes or in the timeframes needed to meet 
CAA milestones.'' \39\ Because the District's 2019 amendment to Rule 
4901 (``Wood Burning Fireplaces and Wood Burning Heaters'') achieves 
0.2 tpd of SIP-creditable direct PM2.5 emissions reductions 
in 2024, the District's remaining PM2.5 emissions reduction 
commitment for 2024 is 1.1 tpd.\40\
---------------------------------------------------------------------------

    \36\ 85 FR 17382, 17413.
    \37\ SJVUAPCD Governing Board Resolution 18-11-16 (November 15, 
2018), 10-11.
    \38\ Email dated November 12, 2019, from Jon Klassen, SJVUAPCD 
to Wienke Tax, EPA Region IX, ``RE: follow up on aggregate 
commitments in SJV PM2.5 plan'' (attaching ``District 
Progress In Implementing Commitments with 2018 PM2.5 
Plan''). Although neither this submission nor Table 4-3 of the 2018 
PM2.5 Plan quantifies expected emission reductions from 
the three proposed incentive-based measures listed in Table 4-5 of 
the 2018 PM2.5 Plan, these proposed incentive-based 
measures are also measures ``committed to in Chapter 4 of the Plan'' 
and are, therefore, covered by the District's control measure 
commitment. Thus, the District has committed to begin the public 
process on each regulatory measure listed in Table 4-4 and on each 
incentive-based measure listed in Table 4-5 by the relevant ``public 
process begins'' date specified in those tables, and to then propose 
each measure to the SJVUAPCD Governing Board by the relevant 
``action date'' specified in those tables.
    \39\ SJVUAPCD Governing Board Resolution 18-11-16 (November 15, 
2018), 10-11.
    \40\ 85 FR 17382, 17415. As shown in row C of Table 9 of our 
proposal, the EPA proposed to credit the District's Rule 4901 (as 
amended June 20, 2019) with 0.2 tpd of direct PM2.5 
reductions in 2024 and to credit the Valley Incentive Measure with 
5.9 tpd of NOX reductions and 0.3 tpd of direct 
PM2.5 reductions in 2024. Because we have not yet taken 
final action to approve the Valley Incentive Measure, however, we 
cannot credit this measure with emission reductions at this time. 
Accordingly, the only SIP-creditable control measure beyond baseline 
measures in the SJV PM2.5 Plan is the District's Rule 
4901 (as amended June 20, 2019). After crediting this rule with 0.2 
tpd of direct PM2.5 reductions in 2024 (i.e., subtracting 
0.2 tpd from the District's PM2.5 tonnage commitment for 
2024, which is 1.3 tpd), the District's remaining PM2.5 
tonnage commitment for 2024 is 1.1 tpd.
---------------------------------------------------------------------------

    Upon the EPA's approval of these commitments into the SIP under CAA 
section 110, the commitments will become federally enforceable 
requirements of an ``applicable implementation plan'' as defined in CAA 
section 302(q). Therefore, as discussed below, both citizens and the 
EPA may enforce these commitments under CAA sections 304(a)(1) and 
113(a)(1), respectively. The enforceable components of these 
commitments are as follows.
    First, both CARB and the District have committed to begin a public 
process on each of the proposed control measures listed in their 
respective control measure commitments \41\ by discussing

[[Page 44197]]

the proposed regulation or program at a public meeting (workshop, 
working group, or Board hearing) or in a publicly-released document. If 
CARB fails to begin a public process on any of its 15 proposed control 
measures by the date specified under the ``public process begins'' 
column in its control measure commitment, that failure would constitute 
a violation of the SIP commitment. Likewise, if the District fails to 
begin a public process on any of its 12 proposed control measures by 
the date specified under the ``public process begins'' column in its 
control measure commitment, that failure would constitute a violation 
of the SIP commitment.
---------------------------------------------------------------------------

    \41\ CARB's 15 proposed control measures and the related 
schedules for starting public process, action, and implementation 
are listed in Attachment A to Board Resolution 18-49 and in Table 7 
of the Valley State SIP Strategy. The SJVUAPCD's 12 proposed control 
measures and the related schedules for starting public process, 
action, and implementation are listed in tables 4-4 and 4-5 of the 
2018 PM2.5 Plan. We refer to these tables as CARB's and 
the District's ``control measure commitments.'' Table 7 of our 
proposed rule summarizes the information in CARB's control measure 
commitment, and Table 8 of our proposed rule summarizes the 
information in the SJVUAPCD's control measure commitment. 85 FR 
17382, 17413-17415.
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    Second, both the State and District have committed to propose, to 
their respective boards, each of the control measures listed in their 
respective control measure commitments by specific dates. If CARB fails 
to propose to its Board any of its 15 proposed control measures by the 
relevant ``action'' date specified in its control measure commitment, 
that failure would constitute a violation of the SIP commitment. 
Likewise, if the District fails to propose to its Board any of its 12 
proposed control measures by the relevant ``action'' date specified in 
its control measure commitment, that failure would constitute a 
violation of the SIP commitment.
    Finally, both the State and District have committed to an aggregate 
tonnage commitment--i.e., to ``achieve'' specific amounts of 
NOX and direct PM2.5 emissions reductions in the 
San Joaquin Valley by 2024, through implementation of either the 
measures listed in their respective control measure commitments or 
appropriate substitute measures. Because the deadline for 
implementation of all control measures necessary for attainment in this 
plan is January 1, 2024,\42\ we understand that both the State and 
District have committed to achieve the necessary emission reductions no 
later than January 1, 2024.\43\ To ``achieve'' specified amounts of 
emissions reductions through implementation of control measures, a 
regulatory agency must require compliance with measures designed to 
accomplish such reductions. To require such compliance by January 1, 
2024, in turn, necessitates a sequence of regulatory actions well in 
advance of that date, ultimately leading to full adoption of measures 
that achieve the requisite amounts of emission reductions, following 
adequate public process.\44\ Thus, all of the rules and other control 
measures that CARB or the SJVUAPCD adopt to satisfy their respective 
tonnage commitments will be subject to state rulemaking processes 
through which the EPA and the public may track the agencies' progress 
in achieving the requisite emissions reductions in the years leading up 
to 2024 and before the December 31, 2024 attainment date.
---------------------------------------------------------------------------

    \42\ 40 CFR 51.1011(b)(5) (requiring implementation of all 
control measures needed for attainment as expeditiously as 
practicable and no later than the beginning of the year containing 
the applicable attainment date).
    \43\ This interpretation is consistent with CARB's statement in 
its resolution of adoption that ``CARB's mobile source reduction 
schedule for the Valley provides measures to be considered 
throughout the years with all emissions reductions in place by 
January 1, 2024.'' CARB Resolution 18-49 (October 25, 2018), 4.
    \44\ The California Administrative Procedure Act (Cal. Gov't 
Code, section 11340 et seq.) requires all state agencies to provide, 
at minimum, a 45-day opportunity to comment in writing, by fax, or 
email on any new or revised regulation, with limited exceptions. 
Cal. Gov't Code, section 11346.4. The 45-day opportunity to submit 
comments starts with publication in the California Regulatory Notice 
Register of a notice of proposed rulemaking, which must be posted on 
the rulemaking agency's website and mailed to ``every person who has 
filed a request for notice of regulatory actions with the state 
agency,'' among others. Id. For proposed regulations involving 
``complex proposals'' or a large number of proposals, the state 
agency must involve the public in workshops or other public 
discussions well before the start of the formal rulemaking process. 
Cal. Gov't Code, section 11346.45.
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    CARB regularly informs the public of ways to participate in its 
rulemaking processes \45\ and provides guidelines for accessing public 
records under the State Public Records Act.\46\ Should either CARB or 
the SJVUAPCD fail to commence, prior to January 1, 2024, rulemaking 
proceedings as necessary to require full implementation of (i.e., 
compliance with) measures achieving the required tonnages of emission 
reductions by January 1, 2024, CARB or the District would be in 
violation of its SIP commitment.\47\ CARB must also submit each adopted 
measure to the EPA for approval into the SIP, after which the EPA 
determines, through notice-and-comment rulemaking, whether to approve 
the measure under CAA section 110 and the appropriate amounts of SIP 
emission reduction credit to attribute to the measure, if approved.
---------------------------------------------------------------------------

    \45\ See, e.g., CARB's rulemaking schedules at https://ww2.arb.ca.gov/rulemaking-activity.
    \46\ ``Guidelines for Accessing Public Records,'' available at 
http://www.arb.ca.gov/html/pubrecsguidelines.htm.
    \47\ Furthermore, if either agency fails to meet its 
commitments, the EPA could make a finding of failure to implement 
the SIP under CAA section 179(a), which starts an 18-month period 
for the State to correct the non-implementation before mandatory 
sanctions are imposed.
---------------------------------------------------------------------------

    These procedures mandated by the State and District commitments 
constitute a specific enforceable strategy designed to bring the San 
Joaquin Valley into attainment of the PM2.5 NAAQS by the end 
of 2024. The fact that CARB and the District may meet their SIP 
commitments by adopting measures that are not specifically identified 
in the SIP, or through one of several available techniques, does not 
render the requirement to achieve the aggregate emissions reductions 
unenforceable.\48\ For over 20 years, the EPA has approved aggregate 
tonnage commitments under which the state is required to achieve 
specified amounts of emission reductions through enforceable control 
measures to be adopted and implemented by a later date.\49\
---------------------------------------------------------------------------

    \48\ Citizens for a Better Environment v. Deukmejian, 731 F. 
Supp. 1448, 1454-59 (N.D. Cal.) (``the basic commitment to adopt and 
implement additional measures, should the identified conditions 
occur, constitutes a specific strategy, fully enforceable in a 
citizens action, although the exact contours of those measures are 
not spelled out''), modified, 746 F. Supp. 976 (1990) (holding state 
and district liable for failing to satisfy SIP commitment).
    \49\ See, e.g., ``http://www.lexis.com/research/
buttonTFLink?_m=b8271650ac023d9ce93fab43ee478a8f&_xfercite=%3ccite%20
cc%3d%22USA%22%3e%3c%21%5bCDATA%5b66%20FR%2057160%5d%5d%3e%3c%2fcite%
3e&_butType=3&_butStat=2&_butNum=24&_butInline=1&_butinfo=%3ccite%20c
c%3d%22USA%22%3e%3c%21%5bCDATA%5b62%20FR%201150%2cat%201187%5d%5d%3e%
3c%2fcite%3e&_fmtstr=FULL&docnum=1&_startdoc=1&wchp=dGLbVzB-
zSkAW&_md5=6d0b8c64e7cb22f330ae9f1798feea9b'' 62 FR 1150, 1187 (Jan. 
8, 1997) (approving ozone attainment demonstration for the South 
Coast Air Basin); ``http://www.lexis.com/research/
buttonTFLink?_m=b8271650ac023d9ce93fab43ee478a8f&_xfercite=%3ccite%20
cc%3d%22USA%22%3e%3c%21%5bCDATA%5b66%20FR%2057160%5d%5d%3e%3c%2fcite%
3e&_butType=3&_butStat=2&_butNum=25&_butInline=1&_butinfo=%3ccite%20c
c%3d%22USA%22%3e%3c%21%5bCDATA%5b65%20FR%2018903%5d%5d%3e%3c%2fcite%3
e&_fmtstr=FULL&docnum=1&_startdoc=1&wchp=dGLbVzB-
zSkAW&_md5=6721a3f19a584849c189d2c9f3765afa'' 65 FR 18903 (Apr. 10, 
2000) (approving revisions to ozone attainment demonstration for the 
South Coast Air Basin); 66 FR 57160 (Nov. 14, 2001) (approving ozone 
attainment demonstration for Houston/Galveston, Texas); 67 FR 5170 
(Feb. 4, 2002) (approving ozone attainment demonstration for New 
York); 69 FR 30005 (May 26, 2004) (approving PM10 
attainment demonstration for San Joaquin Valley); and 76 FR 69896 
(Nov. 9, 2011) (approving PM2.5 attainment demonstration 
for San Joaquin Valley).
---------------------------------------------------------------------------

    For all of these reasons, we conclude that these enforceable 
commitments to adopt and implement additional control measures to 
achieve aggregate emission reductions on a fixed schedule are 
appropriate means, techniques, or schedules for compliance under 
sections 110(a)(2)(A) and 172(c)(6) of the Act.
    Comment 3: NPCA states that approval of the aggregate commitments 
under the EPA's three-factor test is unreasonable, and that the EPA's

[[Page 44198]]

analysis of these factors is conclusory and contrary to the record.
    Response 3: For the reasons provided in Response 3.A through 
Response 3.C below, we disagree with the commenter's claim that our 
approval of the commitments in the Plan is unreasonable and that our 
analysis of the commitments under the three-factor test is unsupported.
    Comment 3.A: With respect to the first factor, NPCA states that the 
EPA acknowledges that 13.8 percent (%) of the necessary NOX 
reductions and over a quarter of the necessary PM2.5 
reductions will supposedly come from these new aggregate commitments. 
NPCA asserts that the level of these commitments is unprecedented and 
far from ``limited,'' and that the EPA offers no record of support for 
its conclusion, pointing instead to the difficulty in identifying 
additional measures and suggesting that it is reasonable for the State 
and District to seek additional time to adopt the last increment of 
emission reductions. NPCA claims that the EPA's conclusion regarding 
the need for more time has nothing to do with whether the commitments 
represent a limited portion of the needed reductions. NPCA states that 
these percentages far exceed guidance on the use of voluntary measures, 
and that the ton per day levels of aggregate tonnage are beyond the 
levels of commitments approved in any prior SIP.
    NPCA also states that the ``expectation that even larger tonnage 
reductions than have previously been approved in a SIP can magically be 
found is inconsistent with EPA's own conclusion that additional 
measures are more difficult to find,'' and that the EPA's conclusion is 
an admission that the State and District have not identified the 
necessary measures. NPCA states that, unlike plans for ozone, the CAA 
does not allow PM2.5 plans to include this sort of ``black 
box'' that permits plans to put off identification of measures, and 
that the EPA's approval undermines the Act's basic planning 
requirements by suggesting that a plan need only include ``a blanket 
commitment to achieve necessary reductions, even if there is no 
identified path to actually doing so.''
    Response 3.A: The commenters correctly note that the percentages of 
needed emission reductions that are addressed by the aggregate tonnage 
commitments in the SJV PM2.5 Plan are higher than those we 
have approved in any prior SIP. We disagree, however, with NPCA's claim 
that the EPA's approval of these commitments ``undermines the Act's 
basic planning requirements'' and suggests that a plan need only 
include ``a blanket commitment to achieve necessary reductions, even if 
there is no identified path to actually doing so.''
    Our proposed rule stated that the emission reductions remaining as 
aggregate tonnage commitments in the Plan (after crediting Rule 4901 
and the Valley Incentive Measure toward the attainment demonstration) 
would be 28 tpd of NOX emission reductions and 1.7 tpd of 
direct PM2.5 emission reductions, which equate to 
approximately 13.8% of the NOX reductions and 26.6% of the 
direct PM2.5 reductions needed to attain the 2006 
PM2.5 NAAQS in the San Joaquin Valley by the end of 
2024.\50\ Because the EPA has not yet taken final action to approve the 
Valley Incentive Measure, however, we cannot credit this measure with 
emission reductions at this time and have added the NOX and 
direct PM2.5 reductions attributed to this measure back to 
the aggregate tonnage commitments. Thus, the emission reductions 
remaining as aggregate tonnage commitments are now 33.9 tpd of 
NOX emission reductions and 2.0 tpd of direct 
PM2.5 emission reductions, which equate to approximately 
16.8% of the NOX reductions and 31.3% of the direct 
PM2.5 reductions necessary for attainment. See Table 1 in 
section III of this final rule.
---------------------------------------------------------------------------

    \50\ 85 FR 17382, 17415 (Table 9). As shown in row C of Table 9 
of our proposal, the EPA proposed to credit the District's Rule 4901 
(as amended June 20, 2019) with 0.2 tpd of direct PM2.5 
reductions in 2024 and to credit the Valley Incentive Measure with 
5.9 tpd of NOX reductions and 0.3 tpd of direct 
PM2.5 reductions in 2024.
---------------------------------------------------------------------------

    Whether a particular aggregate tonnage commitment constitutes a 
``limited'' portion of the required emission reductions is a question 
that the EPA must evaluate in light of the facts and circumstances of 
the nonattainment area at issue. Given the nature of the 
PM2.5 challenge in the San Joaquin Valley, the significant 
reductions in NOX and direct PM2.5 emission 
levels achieved through implementation of baseline measures over the 
past several decades, and the difficulty of identifying additional 
control measures that are feasible for implementation in the area, we 
find it reasonable for the State and District to seek additional time 
to adopt the last increment of emission reductions necessary for 
attainment by 2024.\51\ Therefore, we find that the aggregate tonnage 
commitments in the Plan constitute a limited portion of the required 
control strategy for the 2006 PM2.5 NAAQS in the San Joaquin 
Valley and that the first factor of our three-factor test is met.
---------------------------------------------------------------------------

    \51\ 85 FR 17382, 17416.
---------------------------------------------------------------------------

    NPCA's statement that ``the Plan's aggregate commitments far exceed 
guidance on the use of voluntary measures'' appears to be in reference 
to the EPA's longstanding guidance recommending certain presumptive 
limits on the amounts of emission reductions from voluntary and other 
nontraditional (e.g., incentive-based) measures that may be credited in 
a SIP.\52\ For example, the EPA has recommended that SIPs rely on 
voluntary mobile source emission reduction programs for no more than 
three percent of the total projected future year emission reductions 
required to attain the relevant NAAQS, except where the state provides 
a ``clear and convincing justification'' for a higher limit.\53\ These 
guidance documents and the presumptive limits discussed therein do not 
apply to our evaluation of the enforceable commitments in the SJV 
PM2.5 Plan because the commitments are not voluntary or 
incentive-based measures. Although our proposed rule discusses one 
incentive-based measure (the Valley Incentive Measure) as a component 
of the attainment demonstration in the Plan,\54\ we have not yet taken 
final action on the Valley Incentive Measure and are not considering it 
as part of our final action on the SJV PM2.5 Plan. Thus, the 
SJV PM2.5 Plan does not rely on any voluntary or incentive-
based measure to achieve emission reductions necessary for attainment, 
and the EPA's guidance documents on the use of voluntary measures in 
SIPs therefore do not apply to this action.
---------------------------------------------------------------------------

    \52\ 85 FR 17382, 17412 (describing EPA guidance on SIP credit 
for voluntary measures).
    \53\ EPA, ``Guidance on Incorporating Voluntary Mobile Source 
Emission Reduction Programs in State Implementation Plans (SIPs),'' 
October 24, 1997, 5; EPA, ``Incorporating Emerging and Voluntary 
Measure in a State Implementation Plan (SIP),'' October 4, 2004, 9; 
EPA, ``Guidance on Incorporating Bundled Measures in a State 
Implementation Plan,'' August 16, 2005, 8, n. 6; and EPA, ``Diesel 
Retrofits: Quantifying and Using Their Emission Benefits in SIPs and 
Conformity: Guidance for State and Local Air and Transportation 
Agencies,'' March 2018, 12.
    \54\ 85 FR 17382, 17412-17413 (discussing justification for SJV 
PM2.5 Plan's reliance on Valley Incentive Measure) and 85 
FR 16588 (March 24, 2020) (proposed rule to approve Valley Incentive 
Measure).
---------------------------------------------------------------------------

    To the extent NPCA intended to argue that the EPA's presumptive 
limits on use of voluntary measures in SIPs should apply to our 
evaluation because of the extent to which CARB anticipates fulfilling 
its tonnage commitments through adoption and implementation of 
incentive-based measures, we disagree. As explained in Response 1

[[Page 44199]]

and Response 2, although the Valley State SIP Strategy indicates that 
CARB anticipates achieving 23 tpd of the necessary NOX 
emission reductions and 0.8 tpd of the necessary PM2.5 
emissions reductions through implementation of the incentive-based 
measures listed in Table 8 of the Valley State SIP Strategy,\55\ CARB 
has not specifically committed to adopt any of these listed measures 
and may ultimately achieve the required emission reductions through 
adoption and implementation of other enforceable control measures. 
Thus, the SJV PM2.5 Plan does not specifically rely on any 
voluntary or incentive-based measure to achieve emission reductions 
necessary for attainment. If and when CARB submits to the EPA a 
voluntary or incentive-based measure to achieve a portion of its 
aggregate tonnage commitments in the SJV PM2.5 Plan, the EPA 
will evaluate the submitted measure in accordance with the applicable 
CAA requirements as interpreted in EPA guidance and will take action on 
it following notice and comment rulemaking. We encourage NPCA to 
participate in any such rulemaking and to submit its comments on the 
applicability of the EPA's presumptive limits at that time.
---------------------------------------------------------------------------

    \55\ Valley State SIP Strategy, 38 (Table 8) (identifying 
expected emission reductions from proposed State measures).
---------------------------------------------------------------------------

    NPCA's claim that the CAA does not allow PM2.5 plans to 
include a `` `black box' that permits plans to put off identification 
of measures'' appears to be in reference to the provisions in CAA 
section 182(e)(5) that allow the EPA to approve, for extreme ozone 
nonattainment areas, plan provisions that ``anticipate development of 
new control techniques or improvement of existing control 
technologies.'' This provision, often referred to as the ``black box'' 
or ``new technology'' provision of the Act, applies only to ozone 
nonattainment areas classified as ``extreme'' nonattainment under 
subpart 2 of part D, title I of the Act. Although we agree with NPCA's 
assertion that the CAA does not contain an analogous provision for 
PM2.5 nonattainment area plans, we disagree with NPCA's 
suggestion that the CAA prohibits states from including provisions in 
PM2.5 nonattainment area plans that anticipate adoption and 
implementation of necessary control measures at a later date. The 
inclusion of the new technology provision in section 182(e)(5), 
applicable for different purposes in extreme ozone nonattainment areas, 
does not preclude the authority of the Agency to approve appropriately 
structured enforceable commitments for purposes of PM2.5 
nonattainment area plans. As we explained in our proposed rule, 
sections 110(a)(2)(A) and 172(c)(6) of the CAA allow for approval of 
enforceable commitments that are limited in scope where circumstances 
exist that warrant the use of such commitments in place of adopted 
measures.\56\ Courts have confirmed that the agency has this 
authority.\57\
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    \56\ 85 FR 17382, 17416 (noting that the express allowance in 
CAA sections 110(a)(2)(A) and 172(c)(6) for ``schedules and 
timetables'' demonstrates that Congress understood that all required 
controls might not have to be in place before a SIP could be fully 
approved).
    \57\ The Fifth Circuit Court of Appeals upheld the EPA's 
interpretation of CAA sections 110(a)(2)(A) and 172(c)(6) and the 
Agency's use and application of the three factor test in approving 
enforceable commitments in the 1-hour ozone SIP for Houston-
Galveston. BCCA Appeal Group et al. v. EPA et al., 355 F.3d 817 (5th 
Cir. 2003). More recently, the Ninth Circuit Court of Appeals upheld 
the EPA's approval of enforceable commitments in ozone and 
PM2.5 SIPs for the San Joaquin Valley, based on the same 
three factor test. Committee for a Better Arvin, et al. v. EPA, 786 
F.3d 1169 (9th Cir. 2015).
---------------------------------------------------------------------------

    Finally, we disagree with NPCA's claim that the Plan's aggregate 
commitment is a ``blanket commitment to achieve necessary reductions'' 
with no identified path to fulfill it. As explained in Response 2, both 
CARB and the SJVUAPCD have submitted specific control measure 
commitments \58\ in addition to aggregate tonnage commitments, all of 
which necessitate a sequence of regulatory actions ultimately leading 
to full adoption of measures that achieve the requisite amounts of 
emission reductions by January 1, 2024, following adequate public 
process. These procedures mandated by the State and District 
commitments constitute a specific enforceable strategy designed to 
bring the San Joaquin Valley into attainment of the PM2.5 
NAAQS by the end of 2024. See Response 2.
---------------------------------------------------------------------------

    \58\ Together, CARB's and the District's control measure 
commitments identify a total of 21 regulatory measures (12 for 
mobile sources and nine for stationary sources) and six incentive-
based measures (three each for mobile and stationary sources) that 
the agencies must develop and propose to their respective boards on 
a fixed schedule. See Response 2.
---------------------------------------------------------------------------

    Comment 3.B: NPCA asserts that the EPA's analysis of the second 
factor regarding the State's capacity to fulfill its commitments is 
unreasonable. According to NPCA, the bulk of the EPA's discussion 
focuses on the progress to adopt the identified control measures, while 
the bulk of the commitment strategy relies on incentives to achieve 
voluntary turnover in specified categories of mobile sources. NPCA 
asserts that, for the EPA to conclude that the State is capable of 
fulfilling its commitment, the EPA must conclude that this incentive-
dependent strategy is reasonable. NPCA states that for this strategy to 
work, CARB and the District must first be able to find the necessary 
funding, must then be able to use that money to achieve the level of 
turnover described, and finally must demonstrate that the specified 
level of turnover will result in the emission reductions anticipated. 
NPCA claims that the EPA cannot reasonably conclude that the State is 
capable of achieving any of this.
    According to NPCA, the EPA acknowledges that the Plan identifies a 
total funding need of $5 billion (including $3.3 billion for heavy-duty 
trucks and buses and $1.4 billion for agricultural equipment) and 
characterizes the various funding programs as ``well-funded'' but 
provides no analysis of how these programs line up with the funding 
need, or any assessment of whether the State is capable of fulfilling 
the targets. NPCA claims that the 2018 CARB Staff Report shows 
incentive funding streams providing roughly $350 million per year over 
the next seven years, far below the roughly $850 million per year 
needed, and that the gap between what CARB and the District asked for 
in incentives and what they are likely to receive is on track to grow 
to billions of dollars short of what the Plan specifies is needed for 
the San Joaquin Valley to attain the NAAQS by 2024. NPCA asserts that 
CARB offers no strategy for making up that shortfall, and that the 
shortfall has only grown over time.
    Moreover, NPCA claims, in light of the current COVID-19 crisis and 
anticipated economic fallout, the California Legislature will likely 
have significantly less funding available over the next five years due 
to funding shortfalls in CARB's greenhouse gas reduction fund (GGRF), 
general budget, and other sources that these incentive grant programs 
rely upon. NPCA argues that, because there is no reason to think that 
all new sources of funding would go to the San Joaquin Valley, the EPA 
must explain why it is reasonable to believe that CARB is capable of 
finding an additional $1.3 billion per year in new incentive funding--
nearly three times as much as currently achieved by CARB's existing 
programs.
    Citing the EPA's reference to a September 2019 CARB meeting at 
which incentive funding shortfalls were discussed, NPCA claims that the 
EPA ``suggests that the Board's recommendation to develop a `Plan B' is 
evidence that CARB is capable of fulfilling its commitment.'' But 
according to NPCA, this Board meeting is ``evidence of the recognition 
that the

[[Page 44200]]

strategy outlined in the Plan is already failing and will not work,'' 
and the EPA can point to no new plan that came out of the Board's 
directive to staff. NPCA also states that neither CARB nor the District 
have held or scheduled any workshops to ``discuss additional reduction 
opportunities'' despite Board direction to do so. NPCA claims that the 
EPA proposes to approve a Plan that has no strategy that the State is 
capable of fulfilling.
    NPCA asserts that the scale of voluntary replacement that CARB's 
commitment assumes is equally absurd. For example, NPCA claims, CARB's 
plan is to use $3.3 billion over six years (2019-2024) to achieve 10 
tpd of NOX reductions from the accelerated turnover of 
trucks and buses, and the Plan suggests incentives will replace 33,000 
heavy-duty vehicles with newer technologies to achieve that level of 
emission reductions. NPCA claims that this means over a dozen truck 
owners per day, every day for the next seven years, will voluntarily 
choose to retire their trucks and replace them with advanced 
technology. If thousands of pieces of agricultural and other off-road 
equipment are also replaced every year, NPCA claims, it is not even 
clear that the agencies could process this many applications. According 
to NPCA, over the entire life of the Proposition 1B program and the 
District's Truck Voucher Program, the District has replaced 4,500 
trucks (roughly 300 per year, or less than one per day). NPCA asserts 
that the ``best year'' for South Coast's passenger vehicle scrappage 
program was 2,600 vehicles. NPCA states that the EPA ``should have at 
least compared these numbers to truck population numbers and turnover 
rates in the Valley to see if an additional 15,000 trucks per year is 
plausible,'' and that the EPA needs to provide a rational basis for 
concluding that CARB can fulfill its strategy for achieving this level 
of voluntary turnover, even if it obtained the necessary funding.
    According to NPCA, the District has a demonstrated track record of 
failing to use funds to achieve emissions reduction commitments. Citing 
a 2015 Environmental Impact Report for Kern County's revised oil and 
gas ordinance and an accompanying agreement signed by the county and 
District, NPCA states that the District received almost $89 million in 
fee monies to be spent on pollution reduction projects intended to 
compensate for otherwise unregulated oil and gas emissions but that the 
District has struggled to spend these funds, and that its shortfalls in 
spending and encumbrances have left the District with ending 
unencumbered balances of more than $6.4 million for 2017, $13.6 million 
for 2018, and $48 million for 2019. NPCA asserts that these shortfalls 
in spending mean that air pollution from new oil and gas drilling is 
increasing unabated and worsening air quality.
    Finally, NPCA states that CARB and the District have been using 
incentive money for years to replace old mobile sources, and that as 
turnover occurs, the remaining mobile sources are cleaner and cleaner 
and emission reductions achieved by additional turnovers become smaller 
and smaller per vehicle. NPCA claims that the EPA ``needs to provide 
some analysis showing that the targeted level of turnover can fulfill 
the aggregate emission reductions assuming lower marginal reductions 
and higher marginal costs.''
    Response 3.B: We disagree with NPCA's claim that the EPA has no 
reasonable basis for finding CARB capable of fulfilling its 
commitments.
    First, both the State and District have made substantial progress 
in developing and adopting the regulatory measures listed in their 
respective control measure commitments. The SJV PM2.5 Plan 
indicates that CARB and the SJVUAPCD anticipate achieving approximately 
32% of their combined aggregate tonnage commitments for NOX 
reductions and 52% of their combined aggregate tonnage commitments for 
direct PM2.5 reductions through adoption and implementation 
of regulatory control measures.\59\ As we explained in the proposed 
rule, CARB has adopted or begun the public process on all but one of 
the 12 regulatory control measures listed in its control measure 
commitment, and the District has adopted or begun the public process on 
six of the nine regulatory measures listed in its control measure 
commitment.\60\ The substantial progress that both agencies have made 
in the regulatory processes that they have committed to undertake, for 
purposes of achieving a sizable portion of the aggregate tonnage 
commitments in the Plan (i.e., 30 and 52% of the NOX and 
PM2.5 reductions, respectively), supports our conclusion 
that the State and District are capable of fulfilling their respective 
commitments.
---------------------------------------------------------------------------

    \59\ The Valley State SIP Strategy indicates that CARB 
anticipates achieving 9 tpd of its 32 tpd NOX emission 
reduction commitment and 0.1 tpd of its 0.9 tpd PM2.5 
emission reduction commitment through adoption and implementation of 
regulatory control measures (Valley State SIP Strategy, 38 (Table 
8), and the 2018 PM2.5 Plan indicates that the SJVUAPCD 
anticipates achieving all or most of its 1.9 tpd NOX 
emission reduction commitment and 0.94 tpd of its 1.1 tpd 
PM2.5 emission reduction commitment through adoption and 
implementation of regulatory control measures (2018 PM2.5 
Plan, 4-12 (Table 4-3) and 2019 Rule 4901 Staff Report). Thus, the 
total NOX tonnage attributed to regulatory measures is 
10.9 tpd of the 33.9 tpd aggregate commitment (approximately 32%), 
and the total PM2.5 tonnage attributed to regulatory 
measures is 1.04 tpd of the 2.0 tpd aggregate commitment 
(approximately 52%).
    \60\ 85 FR 17382, 17416-17417.
---------------------------------------------------------------------------

    Second, CARB has also made significant progress in developing and 
implementing the Valley Incentive Measure, one of three incentive-based 
measures listed in its control measure commitment.\61\ CARB adopted and 
submitted the Valley Incentive Measure to the EPA in February 2020, 
consistent with the 2020 ``action'' date specified in its control 
measure commitment, and the EPA proposed to approve this measure into 
the SIP on March 24, 2020.\62\ CARB's SIP submission for the Valley 
Incentive Measure indicates that the identified incentive projects, 
most of which have already been funded and are currently being 
implemented, would achieve a total of 5.9 tpd of NOX 
emission reductions and 0.3 tpd of PM2.5 emission reductions 
in the San Joaquin Valley by 2024.\63\ Although the EPA has not yet 
taken final action to approve this measure, CARB's timely adoption and 
submission of this measure, together with extensive documentation to 
address the CAA's requirements for crediting incentive-based measures 
in a SIP, supports our conclusion that the State is capable of adopting 
and implementing incentive-based measures to achieve its aggregate 
tonnage commitments.
---------------------------------------------------------------------------

    \61\ Valley State SIP Strategy, 36, 38 (tables 7 and 8).
    \62\ 85 FR 16588 (March 24, 2020).
    \63\ EPA, ``Technical Support Document for EPA's Rulemaking for 
the California State Implementation Plan, California Air Resources 
Board Resolution 19-26, San Joaquin Valley Agricultural Equipment 
Incentive Measure,'' February 2020.
---------------------------------------------------------------------------

    Third, the Plan's identified funding need of $5 billion (including 
$3.3 billion for heavy-duty trucks and buses and $1.4 billion for 
agricultural equipment) to incentivize the necessary level of vehicle 
and equipment turnover represents a projection of the potential amount 
of incentive funds needed to achieve the aggregate tonnage commitments, 
and is not necessarily the amount that will ultimately be required. For 
example, as explained below, it is possible that the agricultural 
equipment replacement projects could be implemented with less funding 
than stated in the Plan. Based on information about the cost of 
agricultural equipment replacement projects provided in CARB's SIP 
submission for the Valley Incentive Measure, the EPA developed 
alternative estimates of the additional funding necessary to implement

[[Page 44201]]

additional agricultural equipment replacement projects in the San 
Joaquin Valley. Specifically, based on the amounts of incentive funds 
secured or disbursed to implement the projects identified in the Valley 
Incentive Measure (a total of approximately $328 million) and emission 
reductions summed from those projects, we calculated the average cost-
effectiveness values for 1) projects that have already been fully 
funded and 2) all projects relied upon in the Valley Incentive 
Measure.\64\ We then used the average cost-effectiveness values to 
estimate a range of total incentive funds that could achieve an 
additional 5.1 tpd of NOX reductions and 0.5 tpd of direct 
PM2.5 reductions from agricultural equipment replacement 
projects (i.e., the additional reductions necessary to achieve the 
total emission reductions attributed to CARB's proposed ``Accelerated 
Turnover of Agricultural Equipment'' measure).\65\
---------------------------------------------------------------------------

    \64\ Memorandum dated June 22, 2020, from Rebecca Newhouse, EPA 
Region IX, Air and Radiation Division, Rules Office to docket number 
EPA-R09-OAR-2019-0318, Subject: ``Cost-effectiveness of Emission 
Reductions from the Valley Incentive Measure and Estimated Future 
Funding Needs for Additional Agricultural Equipment Replacements'' 
(``EPA Cost-Effectiveness Memo'').
    \65\ The SJV PM2.5 Plan indicates that, in addition 
to the 5.9 tpd of NOX reductions and 0.3 tpd of 
PM2.5 reductions to be achieved by the Valley Incentive 
Measure, CARB anticipates achieving an additional 5.1 tpd of 
NOX reductions and 0.5 tpd of PM2.5 reductions 
from other agricultural equipment replacement measures in the San 
Joaquin Valley. Valley State SIP Strategy, 38 (Table 8) (identifying 
a total of 11 tpd NOX reductions and 0.8 tpd 
PM2.5 reductions to be achieved by ``Accelerated Turnover 
of Agricultural Equipment'').
---------------------------------------------------------------------------

    These calculations resulted in a low estimate of $480 million and a 
high estimate of $547 million to achieve both an additional 5.1 tpd of 
NOX reductions and an additional 0.5 tpd of direct 
PM2.5 reductions from CARB's proposed ``Accelerated Turnover 
of Agricultural Equipment'' measure,\66\ both significantly less than 
the approximately $1 billion identified in the Plan as necessary to 
achieve these remaining emission reductions.\67\ Although our 
calculations are based on a number of assumptions that may differ from 
those used by CARB and the District in the SJV PM2.5 Plan, 
they provide some indication that the emission reductions attributed in 
the Plan to agricultural equipment replacement projects may be 
achievable with less than $1.4 billion in incentive funds and, by 
extension, that the emission reductions attributed to all of the 
incentive-based measures in the Plan may be achievable with less than 
$5 billion.
---------------------------------------------------------------------------

    \66\ EPA Cost-Effectiveness Memo, 6 (Table 4). The higher 
funding estimates for PM2.5 reductions would be adequate 
to also achieve the identified NOX reductions, for which 
the EPA calculated significantly lower cost-effectiveness values and 
funding needs.
    \67\ The 2018 PM2.5 Plan identifies a total of $1.4 
billion in funding needed to implement the ``Accelerated Turnover of 
Agricultural Equipment'' measure. 2018 PM2.5 Plan, App. 
E, Table E-4 (page E-22). Because CARB has already secured $328 
million in incentive funds to implement the Valley Incentive 
Measure, which is expected to achieve 5.9 of the 11 tpd of 
NOX reductions and 0.3 of the 0.8 tpd PM2.5 
reductions attributed to the ``Accelerated Turnover of Agricultural 
Equipment'' measure, the remaining amount of incentive funds that 
the Plan identifies as needed to fully implement this measure (i.e., 
to achieve the remaining 5.1 tpd NOX reductions and 0.5 
tpd PM2.5 reductions) is approximately $1.07 billion.
---------------------------------------------------------------------------

    CARB's Staff Report for the SJV PM2.5 Plan indicates 
that, of the $5 billion estimated to be necessary from 2019 to 2024 to 
achieve the needed emission reductions identified in the Plan, over $2 
billion is ``identified or anticipated'' ($338 million each year from 
2019 to 2024), leaving a total ``incentive funding gap'' of 
approximately $2.6 billion over the 2019-2024 period.\68\ That is, the 
Plan indicates that over 40% of the needed incentive funds are 
identified or anticipated, leaving a ``funding gap'' of less than 60% 
of the needed funds. If we assume a 60% funding gap would result in a 
failure to achieve 60% of the emission reductions that the Plan 
attributes to CARB's incentive-based measures (23 tpd NOX 
reductions and 0.8 tpd PM2.5 reductions),\69\ the funding 
gap would result in emission reduction shortfalls of approximately 13.8 
tpd for NOX and 0.5 tpd for PM2.5, which equate 
to approximately 7% of the total NOX reductions and 8% of 
the total PM2.5 reductions necessary for attainment.\70\ We 
believe it is reasonable to provide the State and District additional 
time to identify the specific measures that will achieve these amounts 
of reductions.
---------------------------------------------------------------------------

    \68\ CARB, ``Staff Report, Review of the San Joaquin Valley 2018 
Plan for the 1997, 2006, and 2012 PM2.5 Standards,'' 
release date December 21, 2018 (``CARB Staff Report''), 27 (Table 
9).
    \69\ Valley State SIP Strategy, 38 (Table 8).
    \70\ 2018 PM2.5 Plan, App. H, Table H-6 (identifying 
totals of 202.2 tpd NOX reductions and 6.4 tpd 
PM2.5 reductions necessary for attainment of the 2006 
PM2.5 NAAQS in the San Joaquin Valley by December 
31,2024).
---------------------------------------------------------------------------

    Fifth, we disagree with NPCA's suggestion that anticipated economic 
constraints render the State unable to achieve its tonnage commitments 
and its claim that the EPA must explain ``why it is reasonable to 
believe that CARB is capable of finding an additional $1.3 billion per 
year in new incentive funding'' in order to find that CARB is capable 
of fulfilling its commitments. Although it is possible that CARB and 
the District will have significantly less funding available over the 
next several years to implement the incentive-based measures identified 
in the Plan, it is also possible that the State and District will 
achieve their respective aggregate tonnage commitments with less than 
$5 billion in incentive funds, as suggested by our alternative 
estimates of the cost-effectiveness and estimated funding needs for 
additional agricultural equipment replacement projects. Neither CARB 
nor the District has committed to secure $5 billion in funding for its 
incentive programs, nor does the Plan establish definitively that this 
amount is necessary to achieve the identified tonnage commitments. For 
example, CARB and the District may be able to fulfill a substantial 
portion of their aggregate tonnage commitments through other measures 
not identified in the SJV PM2.5 Plan, in lieu of or in 
addition to the identified incentive programs. Although the Valley 
State SIP Strategy indicates that CARB anticipates achieving 23 tpd of 
the necessary NOX emission reductions (68% of the total 33.9 
tpd NOX commitment from both agencies) and 0.8 tpd of the 
necessary PM2.5 emissions reductions (40% of the total 2.0 
tpd PM2.5 commitment from both agencies) through 
implementation of the incentive-based measures listed in CARB's control 
measure commitment,\71\ CARB has not specifically committed to adopt 
any of these listed measures and may ultimately satisfy its tonnage 
commitments through adoption and implementation of other enforceable 
control measures. See Response 1 and Response 2. Indeed, CARB has 
recently fulfilled the aggregate tonnage commitments in a previous plan 
to provide for attainment of the 1997 PM2.5 NAAQS in the San 
Joaquin Valley, in part through adoption and implementation of both 
regulatory and incentive-based control measures not specifically 
identified in the approved attainment plan.\72\
---------------------------------------------------------------------------

    \71\ Valley State SIP Strategy, 36, 38 (tables 7 and 8).
    \72\ 85 FR 17382, 17406-17407. See also, the EPA's General 
Evaluation TSD, 3-12.
---------------------------------------------------------------------------

    CARB has identified a number of potential additional State measures 
on which it intends to begin public rule development processes this 
year, including a Tier 5 off-road diesel engine standard, a ``state 
green contracting'' measure, a ``reduction in growth of single-
occupancy vehicle travel'' measure, and a locomotive emission reduction 
measure.\73\ In addition, as

[[Page 44202]]

explained in our proposed rule, emission reductions from certain 
measures in the Plan's control strategy, such as zero emission airport 
shuttle buses and transportation refrigeration units used for cold 
storage, have yet to be quantified but are expected to further reduce 
NOX and direct PM2.5 emissions by 2024.\74\ 
Finally, CARB implements a number of highly successful incentive 
programs designed to accelerate turnover to cleaner vehicles, including 
the Hybrid and Zero-Emission Truck and Bus Voucher Incentive Project 
(HVIP), which accelerates the adoption of cleaner, more-efficient 
trucks and buses.\75\ All of these potential additional control 
measures or incentive programs are candidate measures that CARB may 
adopt, implement, and submit to the EPA to achieve its aggregate 
tonnage commitments.
---------------------------------------------------------------------------

    \73\ Email dated November 12, 2019, from Sylvia Vanderspek, CARB 
to Anita Lee, EPA Region IX, ``RE: SJV PM2.5 
information'' (attaching ``Valley State SIP Strategy Progress'').
    \74\ 85 FR 17382, 17417.
    \75\ CARB, ``Public Health: HVIP Metrics (Draft),'' April 16. 
2020, slide 3 (showing significant increases in annual HVIP vouchers 
for zero-emission and low-NOX vehicles from 2017 to 
2019).
---------------------------------------------------------------------------

    Finally, although NPCA correctly notes that the District has not 
fully expended the funds it received from the Kern County Oil and Gas 
Emission Reduction Agreement (OGERA) during the last several years,\76\ 
the EPA does not agree that this equates to ``a demonstrated track 
record of failing to use funds to achieve emissions reduction 
commitments.'' For example, the District has fulfilled its SIP-approved 
aggregate tonnage commitment in the 2008 PM2.5 Plan for the 
1997 PM2.5 NAAQS, through adoption and implementation of 
both regulatory and incentive-based control measures.\77\ Additionally, 
the District's latest annual financial reports indicate that both its 
revenues and its expenditures for incentive grant programs have 
significantly increased in the past several years, and that grant funds 
received and appropriated for a given fiscal year may be expended on 
incentive contracts in subsequent fiscal years.\78\ Both the District's 
track record to date in fulfilling its SIP-approved aggregate tonnage 
commitments and the information concerning funds available for 
incentive grant programs in the District's annual financial reports 
support our conclusion that the District is capable of fulfilling its 
aggregate tonnage commitments in the SJV PM2.5 Plan.\79\ 
NPCA fails to substantiate its claim that the District's ``shortfalls 
in spending mean that air pollution from new oil and gas drilling is 
increasing unabated and worsening air quality.''
---------------------------------------------------------------------------

    \76\ The SJVUAPCD's 2019 annual report on its indirect source 
review (ISR) program states that $48.5 million of the FY2018-2019 
Voluntary Emission Reduction Agreement (VERA) program balances were 
not encumbered as of June 30, 2019, and that $29.7 million of this 
unencumbered balance was from the Kern County OGERA. SJVUAPCD, 
``2019 Annual Report, Indirect Source Review Program, July 1, 2018 
to June 30, 2019'' (December 19, 2019), 9. The revenues from the 
Kern County OGERA may be applied to incentive projects to replace 
residential wood burning devices, trucks, buses, and diesel-powered 
off-road equipment, among others. SJVUAPCD, ``Item Number 7: Approve 
Emission Reduction Agreement with Kern County to Fully Mitigate 
Construction and Operational Air Quality Impacts from Future Growth 
in the Oil and Gas Industry in Kern County,'' August 18, 2016.
    \77\ 85 FR 17382, 17406-17407. See also, the EPA's General 
Evaluation TSD, 3-12.
    \78\ The ``non-operating budget'' revenues and expenditures 
identified in the SJVUAPCD's annual financial reports, which 
represent the grant funds received and disbursed by the District to 
implement emission reduction incentive programs, have increased from 
$99.9 million (revenues) and $81.6 million (expenditures) for the 
fiscal year ending June 30, 2017 to $289.8 million (revenues) and 
$139.7 million (expenditures) for the fiscal year ending June 30, 
2019. SJVUAPCD, ``Comprehensive Annual Financial Report, Fiscal Year 
Ended June 30, 2017,'' 16-17, ``Comprehensive Annual Financial 
Report, Fiscal Year Ended June 30, 2018,'' 16-17, and 
``Comprehensive Annual Financial Report, Fiscal Year Ended June 30, 
2019,'' 16-17, available at https://www.valleyair.org/General_info/budget.htm.
    \79\ The District's aggregate tonnage commitments do not 
indicate that the District anticipates achieving any portion of the 
required emission reductions through incentive-based control 
measures. See Response 2.
---------------------------------------------------------------------------

    We therefore find that CARB and the SJVUAPCD are capable of 
fulfilling their respective aggregate tonnage commitments in the SJV 
PM2.5 Plan and that the second factor of our three-factor 
test is met.
    Comment 3.C: With respect to the third factor, NPCA states that the 
scale of the funding shortfall and the turnover required undermine the 
EPA's conclusion that the commitment is for a reasonable and 
appropriate period of time. NPCA claims that the EPA's conclusory 
analysis looks only at specific rule commitments with no discussion of 
the main part of the Plan's strategy, and that any such analysis would 
have shown that CARB and the District are already falling short on 
their funding targets and will need even more funding and even greater 
levels of turnover in the years that remain until 2024. NPCA asserts 
that there is not enough time to make up the ground that has been lost, 
nor is it reasonable to believe that CARB and the District can wait any 
longer to develop a Plan B to achieve the emission reduction 
commitment. According to NPCA, rulemaking must be occurring now to 
achieve the required emission reductions by 2024, and a disapproval of 
the aggregate commitments will trigger that required effort.
    NPCA asserts that the EPA has provided none of the necessary 
analysis to reasonably conclude that the Plan provides any strategy for 
achieving the massive aggregate emission reduction commitments in the 
SIP, and that no such support exists in the record. NPCA claims that 
CARB has submitted an unenforceable promise with no basis for believing 
it can be kept. NPCA asserts that the EPA should disapprove the Plan 
and direct CARB and the District to submit a plan that outlines a 
strategy that does not rely on unrealistic voluntary incentives, and 
that if accelerated turnover is required, CARB and the District should 
``adopt rules to mandate that turnover and use their limited funds to 
assist with that compliance burden rather than making people who 
deserve clean air and the success of the plan the ones to pay for any 
funding shortfall.''
    Response 3.C: We disagree with NPCA's claim that ``the scale of the 
funding shortfall and the turnover required'' undermine the EPA's 
conclusion that the Plan's aggregate commitments are for a reasonable 
and appropriate period of time. As we explained in Response 3.B, the 
SJV PM2.5 Plan identifies an ``incentive funding gap'' over 
the 2019-2024 period of approximately $2.6 billion, almost 60% of the 
funds needed to implement the incentive projects that the Plan 
identifies as necessary for attainment.\80\ If we assume a 60% funding 
gap would result in a failure to achieve 60% of the emission reductions 
that the Plan attributes to CARB's incentive-based measures,\81\ the 
funding gap would result in emission reduction shortfalls of 
approximately 13.8 tpd for NOX and 0.5 tpd for 
PM2.5, which equate to approximately 7% of the total 
NOX reductions and 8% of the total PM2.5 
reductions necessary for attainment by 2024.\82\ We believe it is 
reasonable to provide CARB and the District several years to identify 
the specific measures that will achieve these relatively small amounts 
of reductions by January 1, 2024.
---------------------------------------------------------------------------

    \80\ CARB Staff Report, 27 (Table 9).
    \81\ Valley State SIP Strategy, 38 (Table 8) (attributing 23 tpd 
NOX reductions and 0.8 tpd PM2.5 reductions to 
incentive-based measures).
    \82\ 2018 PM2.5 Plan, Appendix H, Table H-6 
(identifying totals of 202.2 tpd NOX reductions and 6.4 
tpd PM2.5 reductions necessary for attainment of the 2006 
PM2.5 NAAQS in the San Joaquin Valley by December 31, 
2024).
---------------------------------------------------------------------------

    Additionally, it is possible that the State and District will 
achieve their respective aggregate tonnage commitments with less than 
$5 billion in incentive funds, as suggested by our alternative 
estimates of the cost-

[[Page 44203]]

effectiveness of agricultural equipment replacement projects and 
related funding needs. See Response 3.B. Neither CARB nor the District 
has committed to secure $5 billion in funding for its incentive 
programs, nor does the Plan establish definitively that this amount is 
necessary to achieve the identified tonnage commitments. As CARB notes 
in the CARB Staff Report, ``[t]he ultimate goal of the Plan is to 
achieve the emissions reductions needed to reach attainment, and 
incentive monies raised and equipment turned over are a critical part 
of this effort, but not in and of themselves precise targets that must 
be met.'' \83\ Given the uncertainties about the levels of incentive 
funding and the numbers of vehicle or equipment replacement projects 
that are necessary to achieve the aggregate tonnage commitments in the 
Plan, the time needed by the State and District to develop and adopt 
new or revised control measures (whether regulatory or incentive-
based), and the January 1, 2024 deadline for implementation of all 
control measures needed for attainment by December 31, 2024, we find 
the State's and District's commitments to adopt and implement 
enforceable control measures that achieve the necessary emission 
reductions by January 1, 2024 both reasonable and appropriate.
---------------------------------------------------------------------------

    \83\ CARB Staff Report, 26.
---------------------------------------------------------------------------

    We also disagree with the commenter's claim that we provided none 
of the necessary analysis to reasonably conclude that the Plan provides 
a strategy for achieving the aggregate emission reduction commitments 
in the SIP, and that CARB has submitted ``an unenforceable promise with 
no basis for believing it can be kept.'' As explained in the proposed 
rule \84\ and further in Response 2, both CARB and the SJVUAPCD have 
submitted specific control measure commitments in addition to aggregate 
tonnage commitments, all of which necessitate a sequence of regulatory 
actions ultimately leading to full adoption of measures that achieve 
the requisite amounts of emission reductions by January 1, 2024, 
following adequate public process. These procedures mandated by the 
State and District commitments constitute a specific enforceable 
strategy designed to bring the San Joaquin Valley into attainment of 
the PM2.5 NAAQS by the end of 2024. See Response 2.
---------------------------------------------------------------------------

    \84\ 85 FR 17382, 17418.
---------------------------------------------------------------------------

    As we explained in the proposed rule, both CARB and the District 
have made progress in developing and adopting the measures listed in 
their respective control measure commitments. Specifically, CARB has 
adopted 5 measures and begun the public process on 7 of the remaining 
10 measures listed in its control measure commitment.\85\ One of the 
adopted measures is the Valley Incentive Measure, which CARB adopted 
and submitted to the EPA in February 2020, consistent with the 2020 
``action'' date specified in its control measure commitment. The EPA 
proposed to approve this measure into the SIP on March 24, 2020.\86\ 
The District has adopted one measure (SJVUAPCD Rule 4901) by the 
``action'' date specified in its control measure commitment and begun 
the public process on 5 of the remaining 11 measures listed in its 
control measure commitment.\87\ The EPA has approved Rule 4901, as 
amended June 20, 2019, into the SIP.\88\ The State has made tangible 
progress to date in developing, adopting, and submitting these control 
measures for the EPA's approval, and we find the remaining steps of the 
strategy reasonable and appropriate given the January 1, 2024 deadline 
for implementation of the control measures needed for attainment.
---------------------------------------------------------------------------

    \85\ 85 FR 17382, 17413-17414 (Table 7).
    \86\ 85 FR 16588 (March 24, 2020).
    \87\ 85 FR 17382, 17414 (Table 8).
    \88\ EPA, ``Air Plan Approval; California; San Joaquin Valley 
Unified Air Pollution Control District'' (final rule to approve Rule 
4901 (``Wood Burning Fireplaces and Wood Burning Heaters'')), signed 
June 26, 2020.
---------------------------------------------------------------------------

    We agree with NPCA's statement that the State's rulemaking process 
needs to occur now to achieve the required emission reductions by 
January 1, 2024. The control measure commitments in the Plan obligate 
both CARB and the District to do precisely that: all but one of the 
potential control measures identified in the State's and District's 
control measure commitments are scheduled for ``action'' by 2021.\89\ 
In addition to the 5 listed measures that CARB has already adopted, 
CARB must also develop and propose to its Board 10 additional control 
measures (8 regulatory measures and 2 incentive-based measures) by 2021 
to fully satisfy its control measure commitment.\90\ Similarly, in 
addition to the one listed regulatory measure that the SJVUAPCD has 
adopted and submitted to the EPA, the District must also develop and 
propose to its Board 11 additional control measures (8 regulatory 
measures and 3 incentive-based measures) by 2022 to fully satisfy its 
control measure commitment.\91\ Finally, both CARB and the SJVUAPCD 
must ultimately adopt enforceable control measures, whether listed 
measures or substitutes, that achieve a total of 33.9 tpd of 
NOX reductions and 2.0 tpd of direct PM2.5 
reductions by January 1, 2024. Upon the EPA's approval of these 
commitments into the SIP, citizens or the EPA may bring enforcement 
actions under sections 304(a) or 113(a) of the CAA, respectively, to 
compel action by the State or District if either agency fails to begin 
a public process or to propose a specific measure to its board in 
accordance with the deadline in its control measure commitment, or 
fails to adopt enforceable control measures sufficient to fulfill its 
aggregate tonnage commitments. We therefore disagree with NPCA's 
suggestion that disapproval of the SJV PM2.5 Plan is the 
only way to trigger the rulemaking effort necessary to meet the 2024 
attainment deadline.
---------------------------------------------------------------------------

    \89\ The only potential control measure scheduled for ``action'' 
by a later date is SJVUAPCD Rule 4550 (``Conservation Management 
Practices''), which is scheduled for action in 2022. 85 FR 17382, 
17414 (Table 8).
    \90\ Id. at 17413-17414 (Table 7).
    \91\ Id. at 17414 (Table 8).
---------------------------------------------------------------------------

    With respect to NPCA's suggestion that CARB and the District should 
adopt rules to mandate turnover and use their limited funds to assist 
with that compliance burden, we note that the Plan indicates CARB's and 
the District's intent to take this approach for certain key emission 
sources in the San Joaquin Valley. For example, for heavy-duty trucks, 
one of the largest sources of NOX emissions in the San 
Joaquin Valley,\92\ CARB's control measure commitment obligates it to 
develop and propose several regulatory control measures by 2020 (e.g., 
the ``Heavy-Duty Vehicle Inspection and Maintenance (I/M) Program'' and 
the ``Heavy-Duty Low-NOX Engine Standard'') followed by an 
incentive-based measure in 2021 (i.e., the ``Accelerated Turnover of 
Trucks and Buses Incentive Projects'' measure) to assist with the 
compliance burden.\93\ Similarly, for the residential wood burning and 
commercial cooking source categories, among the largest sources of 
direct PM2.5 emissions in the San Joaquin Valley,\94\ the 
District's control measure commitment obligates it to develop and 
propose regulatory control measures (i.e., District Rule 4901 and 
District Rule 4692 (``Commercial Charbroiling'')) in 2019 and 2020, 
respectively, in addition to incentive-based measures (i.e., the 
``Residential Wood Burning Devices Incentive Projects'' measure and the 
``Commercial Under-fired Charbroiling Incentive Projects'' measure) in 
2020, to assist

[[Page 44204]]

with the compliance burden.\95\ We find these timetables for 
development of regulatory and incentive-based measures reasonable.
---------------------------------------------------------------------------

    \92\ 2018 PM2.5 Plan, App. B (Table B-2).
    \93\ 85 FR 17382, 17413-17414 (Table 7).
    \94\ 2018 PM2.5 Plan, App. B (Table B-1).
    \95\ 85 FR 17382, 17414 (Table 8).
---------------------------------------------------------------------------

    We therefore find that the State's and District's commitments in 
the SJV PM2.5 Plan are for a reasonable and appropriate 
period of time and that the third factor of our three-factor test is 
met.

III. Final Action

    For the reasons discussed in this final rule, the associated 
Response to Comment document, and further in our proposed rule, 
supplemental proposal, and related TSDs, under CAA section 110(k)(3), 
the EPA is approving the following portions of the SJV PM2.5 
Plan as meeting CAA requirements for implementation of the 2006 
PM2.5 NAAQS:
     The 2013 base year emission inventories (CAA section 
172(c)(3));
     The demonstration that BACM, including BACT, for the 
control of direct PM2.5 and PM2.5 plan precursors 
will be implemented no later than 4 years after the area was 
reclassified (CAA section 189(b)(1)(B));
     The demonstration (including air quality modeling) that 
the Plan provides for attainment as expeditiously as practicable but no 
later than December 31, 2024 (CAA sections 189(b)(1)(A) and 188(e));
     Plan provisions that require RFP toward attainment by the 
applicable date (CAA section 172(c)(2));
     Quantitative milestones that are to be achieved every 
three years until the area is redesignated attainment and that 
demonstrate RFP toward attainment by the applicable attainment date 
(CAA section 189(c));
     Motor vehicle emissions budgets for 2020, 2023, and 2024 
as shown in Table 3 of this final rule (CAA section 176(c) and 40 CFR 
part 93, subpart A); and
     The inter-pollutant trading mechanism provided for use in 
transportation conformity analyses for the 2006 PM2.5 NAAQS, 
in accordance with 40 CFR 93.124(b).
    With respect to the Plan's attainment demonstration and control 
strategy, the EPA proposed to credit the District's Rule 4901 (as 
amended June 20, 2019) with 0.2 tpd of direct PM2.5 
reductions in 2024 and to credit the Valley Incentive Measure with 5.9 
tpd of NOX reductions and 0.3 tpd of direct PM2.5 
reductions in 2024.\96\ Because we have not yet taken final action to 
approve the Valley Incentive Measure, however, we cannot credit this 
measure with emission reductions at this time. Accordingly, the only 
SIP-creditable control measure beyond baseline measures in the SJV 
PM2.5 Plan is the District's Rule 4901 (as amended June 20, 
2019). After crediting this rule with 0.2 tpd of direct 
PM2.5 reductions in 2024 (i.e., subtracting 0.2 tpd from the 
District's PM2.5 tonnage commitment for 2024, which is 1.3 
tpd), the District's remaining tonnage commitments for 2024 are 1.88 
tpd of NOX and 1.1 tpd of direct PM2.5. CARB's 
aggregate tonnage commitments for 2024 are 32 tpd of NOX and 
0.9 tpd of direct PM2.5.
---------------------------------------------------------------------------

    \96\ 85 FR 27976, Table 9, row C.
---------------------------------------------------------------------------

    Table 1 provides a summary of the total NOX and direct 
PM2.5 emission reductions necessary for attainment in the 
San Joaquin Valley by December 31, 2024, the emission reductions 
attributed to baseline measures and new control strategy measures, and 
the emission reductions remaining as aggregate tonnage commitments.

                   Table 1--Reductions Needed for Attainment and Aggregate Tonnage Commitments
                                                   [Tpd, 2024]
----------------------------------------------------------------------------------------------------------------
                                                                                                   Direct PM2.5
                                                                                        NOX
----------------------------------------------------------------------------------------------------------------
A.....................................  Total reductions needed from baseline              202.2             6.4
                                         and control strategy measures.
B.....................................  Reductions from baseline measures.......           168.3             4.2
C.....................................  Total reductions from approved measures.             0.0             0.2
D.....................................  Total reductions remaining as                       33.9             2.0
                                         commitments (A-B-C).
E.....................................  Percent (%) of total reductions needed             16.8%           31.3%
                                         remaining as commitments (D/A).
----------------------------------------------------------------------------------------------------------------
Sources: 2018 PM2.5 Plan, Ch. 4, Tables 4-3 and 4-7, and Appendix B, Tables B-1 and B-2; and 2019 Rule 4901
  Staff Report, 34.

    With respect to the motor vehicle emissions budgets, we are taking 
final action to limit the duration of the approval of the motor vehicle 
emissions budgets to last only until the effective date of the EPA's 
adequacy finding for any subsequently submitted budgets. We are doing 
so at CARB's request and in light of the benefits of using EMFAC2017-
derived budgets prior to our taking final action on the future SIP 
revision that includes the updated budgets.

                             Table 2--Motor Vehicle Emission Budgets for the San Joaquin Valley for the 2006 PM2.5 Standard
                                                                  [Winter average, tpd]
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                          2017                  2020                  2023                  2024
                           Budget year                           ---------------------------------------------------------------------------------------
                                                                    PM2.5       NOX       PM2.5       NOX       PM2.5       NOX       PM2.5       NOX
--------------------------------------------------------------------------------------------------------------------------------------------------------
Fresno..........................................................        0.9       29.3        0.9       25.9        0.8       15.5        0.8       15.0
Kern............................................................        0.8       28.7        0.8       23.8        0.7       13.6        0.7       13.4
Kings...........................................................        0.2        5.9        0.2        4.9        0.2        2.9        0.2        2.8
Madera..........................................................        0.2        5.5        0.2        4.4        0.2        2.6        0.2        2.5
Merced..........................................................        0.3       11.0        0.3        9.1        0.3        5.5        0.3        5.3
San Joaquin.....................................................        0.7       15.5        0.6       12.3        0.6        7.9        0.6        7.6
Stanislaus......................................................        0.4       12.3        0.4        9.8        0.4        6.2        0.4        6.0
Tulare \a\......................................................        0.4       11.2        0.4        8.7        0.4        5.3        0.4        5.1
--------------------------------------------------------------------------------------------------------------------------------------------------------
Source: 2018 PM2.5 Plan, Appendix D, Table 3-2. Budgets are rounded to the nearest tenth of a ton.
\a\ In Table 14 of the EPA's proposed rule, we inadvertently omitted the last row of motor vehicle emission budgets, for Tulare County, although these
  budgets were included on page 20 of the EPA's General Evaluation TSD.


[[Page 44205]]

    The EPA is also granting the State's request for extension of the 
Serious area attainment date in the San Joaquin Valley from December 
31, 2019, to December 31, 2024, based on a conclusion that the State 
has satisfied the requirements for such extensions in section 188(e) of 
the Act.
    Finally, the EPA is approving the PM2.5 Prior Commitment 
Revision and determining that the State has met the 0.86 tpd 
PM2.5 emission reduction commitment in the SIP.

IV. Statutory and Executive Order Reviews

    Under the Clean Air Act, the Administrator is required to approve a 
SIP submission that complies with the provisions of the Act and 
applicable federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). 
Thus, in reviewing SIP submissions, the EPA's role is to approve state 
choices, provided that they meet the criteria of the Clean Air Act. 
Accordingly, this final action merely approves state plans as meeting 
federal requirements and does not impose additional requirements beyond 
those imposed by state law.
    For these reasons, this final action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Orders 
12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 
2011);
     Is not an Executive Order 13771 (82 FR 9339, February 2, 
2017) regulatory action because SIP approvals are exempted under 
Executive Order 12866;
     Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     Does not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     Is not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the Clean Air Act; and
     Does not provide the EPA with the discretionary authority 
to address disproportionate human health or environmental effects with 
practical, appropriate, and legally permissible methods under Executive 
Order 12898 (59 FR 7629, February 16, 1994).
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where the EPA or an Indian tribe 
has demonstrated that a tribe has jurisdiction. In those areas of 
Indian country, the proposed rule does not have tribal implications and 
will not impose substantial direct costs on tribal governments or 
preempt tribal law as specified by Executive Order 13175 (65 FR 67249, 
November 9, 2000).
    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. The EPA will submit a report containing this action and 
other required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller General of the United States prior 
to publication of the rule in the Federal Register. A major rule cannot 
take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2).
    Under section 307(b)(1) of the Clean Air Act, petitions for 
judicial review of this action must be filed in the United States Court 
of Appeals for the appropriate circuit by September 21, 2020. Filing a 
petition for reconsideration by the Administrator of this final rule 
does not affect the finality of this action for the purposes of 
judicial review nor does it extend the time within which a petition for 
judicial review may be filed, and shall not postpone the effectiveness 
of such rule or action. This action may not be challenged later in 
proceedings to enforce its requirements. (See section 307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Ammonia, Carbon 
monoxide, Incorporation by reference, Intergovernmental relations, 
Nitrogen dioxide, Ozone, Particulate matter, Reporting and 
recordkeeping requirements, Sulfur dioxide, Volatile organic compounds.

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

    Dated: June 30, 2020.
John W. Busterud,
Regional Administrator, Region IX.

    For the reasons started in the preamble, EPA amends Chapter I, 
title 40 of the Code of Federal Regulations as follows:

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

0
1. The authority citation for part 52 continues to read as follows:

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

Subpart F--California

0
2. Section 52.220 is amended by adding paragraphs (c)(478)(ii)(A)(4), 
(c)(536), (c)(537), and (c)(538) to read as follows:


Sec.  52.220  Identification of plan--in part.

* * * * *
    (c) * * *
    (478) * * *
    (ii) * * *
    (A) * * *
    (4) SJVUAPCD's commitments to adopt, submit, and implement 
substitute rules that will achieve equivalent reductions in emissions 
of direct PM2.5 or PM2.5 precursors in the same 
adoption and implementation timeframes or in the timeframes needed to 
meet CAA milestones, as stated on p. 4 of SJVUAPCD Governing Board 
Resolution 2012-12-19, dated December 20, 2012 were revised by CARB 
Resolution 20-15, dated May 28, 2020, in paragraph (c)(539)(ii)(A)(2) 
of this section.
* * * * *
    (536) The following plan was submitted on May 10, 2019 by the 
Governor's designee as an attachment to a letter dated May 9, 2019.
    (i) [Reserved]
    (ii) Additional materials. (A) California Air Resources Board.
    (1) San Joaquin Valley Supplement to the 2016 State Strategy for 
the State Implementation Plan, adopted October 25, 2018 (portions 
relating to the 2006 PM2.5 NAAQS, only) (``Valley State SIP 
Strategy'').
    (2) CARB Resolution No. 18-49 with Attachments A and B, October 25, 
2018. Commitments to begin the public process on, and bring to the 
Board for consideration, the list of proposed SIP measures outlined in 
the Valley State SIP Strategy according to the schedule set forth 
therein, and commitments to

[[Page 44206]]

achieve the aggregate emissions reductions outlined in the Valley State 
SIP Strategy of 32 tpd of NOX and 0.9 tpd of 
PM2.5 emissions reductions in the San Joaquin Valley by 
2024.
    (B) [Reserved]
    (537) The following plan was submitted on May 10, 2019 by the 
Governor's designee as an attachment to a letter dated May 9, 2019.
    (i) [Reserved]
    (ii) Additional materials. (A) California Air Resources Board.
    (1) CARB Resolution No. 19-1, January 24, 2019.
    (2) ``Staff Report, Review of the San Joaquin Valley 2018 Plan for 
the 1997, 2006, and 2012 PM2.5 Standards,'' December 21, 
2018.
    (3) ``Attachment A, Clarifying information for the San Joaquin 
Valley 2018 Plan regarding model sensitivity related to ammonia and 
ammonia controls.''
    (4) ``Staff Report, ARB Review of San Joaquin Valley 
PM2.5 State Implementation Plan,'' including Appendix B 
(``San Joaquin Valley 2015 PM2.5 SIP, Additional Emission 
Reductions Achieved Towards Meeting Aggregate Commitment''), April 20, 
2015.
    (5) ``Technical Clarifications to the 2015 San Joaquin Valley 
PM2.5 State Implementation Plan.''
    (6) ``Appendix H, RFP, Quantitative Milestones, and Contingency, 
2018 Plan for the 1997, 2006, and 2012 PM2.5 Standards, 
Appendix H Revised February 11, 2020,'' (portion pertaining to the 2006 
PM2.5 NAAQS, only, and excluding section H.3 (``Contingency 
Measures'')).
    (B) San Joaquin Valley Unified Air Pollution Control District.
    (1) 2018 Plan for the 1997, 2006, and 2012 PM2.5 
Standards (``2018 PM2.5 Plan''), adopted November 15, 2018 
(portions pertaining to the 2006 PM2.5 NAAQS only), 
excluding Chapter 5 (``Demonstration of Federal Requirements for 1997 
PM2.5 Standards''), Chapter 7 (``Demonstration of Federal 
Requirements for 2012 PM2.5 Standards''), Appendix H, 
section H.3 (``Contingency Measures''), and Appendix I (``New Source 
Review and Emission Reduction Credits'').
    (2) SJVUAPCD Governing Board, In the Matter of: Adopting the San 
Joaquin Valley Unified Air Pollution Control District 2018 Plan for the 
1997, 2006, and 2012 PM2.5 Standards, Resolution No. 18-11-
16, November 15, 2018. Commitments to take action on the rules and 
measures committed to in Chapter 4 of the Plan by the dates specified 
therein, and to submit these rules and measures, as appropriate, to 
CARB within 30 days of adoption for transmittal to EPA as a revision to 
the State Implementation Plan. Commitments to achieve the aggregate 
emissions reductions of 1.88 tpd of NOX and 1.3 tpd of 
PM2.5 by 2024 and, if the total emission reductions from the 
adopted rules or measures are less than those committed to in Chapter 4 
of the 2018 PM2.5 Plan, to adopt, submit, and implement 
substitute rules and measures that achieve equivalent reductions in 
emissions of direct PM2.5 or PM2.5 precursors in 
the same implementation timeframes or in the timeframes needed to meet 
CAA milestones.
    (538) The following plan was submitted on June 19, 2020, by the 
Governor's designee as an attachment to a letter dated June 12, 2020.
    (i) [Reserved]
    (ii) Additional materials. (A) California Air Resources Board.
    (1) Revision to the California State Implementation Plan for 
PM2.5 Standards in the San Joaquin Valley, adopted May 28, 
2020.
    (2) CARB Resolution 20-15, dated May 28, 2020, revising the 
aggregate emissions reductions commitment in 40 CFR 
52.220(c)(478)(ii)(A)(3) to 0.86 tpd of PM2.5.
    (B) [Reserved]

0
3. Section 52.244 is amended by adding paragraph (f) to read as 
follows:


Sec.  52.244  Motor vehicle emissions budgets.

* * * * *
    (f) Approval of the motor vehicle emissions budgets for the 
following PM2.5 reasonable further progress and attainment 
SIP will apply for transportation conformity purposes only until new 
budgets based on updated planning data and models have been submitted 
and EPA has found the budgets to be adequate for conformity purposes.
    (1) San Joaquin Valley, for the 2006 PM2.5 NAAQS only 
(but excluding 2026 budgets), approved August 21, 2020.
    (2) [Reserved]

[FR Doc. 2020-14471 Filed 7-21-20; 8:45 am]
BILLING CODE 6560-50-P