Proposed Rule2024-14336
Air Plan Revisions; California; Sacramento Metropolitan Air Quality Management District; Reasonably Available Control Technology District
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
July 2, 2024
Issuing agencies
Environmental Protection Agency
Abstract
The Environmental Protection Agency (EPA) is proposing to approve state implementation plan (SIP) revisions from the Sacramento Metropolitan Air Quality Management District (SMAQMD or "District") to address Clean Air Act (CAA or "Act") requirements related to the 2008 8-hour ozone national ambient air quality standards (NAAQS or "standards"). These revisions concern emissions of oxides of nitrogen (NOX) from boilers, gas turbines, and miscellaneous (misc) combustion units and reasonably available control technology (RACT) requirements for major sources of NOX in the portion of the Sacramento Metro, CA, nonattainment area that is subject to SMAQMD jurisdiction. We are taking comments on this proposal and plan to follow with a final action.
Full Text
<html>
<head>
<title>Federal Register, Volume 89 Issue 127 (Tuesday, July 2, 2024)</title>
</head>
<body><pre>
[Federal Register Volume 89, Number 127 (Tuesday, July 2, 2024)]
[Proposed Rules]
[Pages 54748-54753]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-14336]
=======================================================================
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[EPA-R09-OAR-2024-0197; FRL-11981-01-R9]
Air Plan Revisions; California; Sacramento Metropolitan Air
Quality Management District; Reasonably Available Control Technology
District
AGENCY: Environmental Protection Agency (EPA).
ACTION: Proposed rule.
-----------------------------------------------------------------------
SUMMARY: The Environmental Protection Agency (EPA) is proposing to
approve state implementation plan (SIP) revisions from the Sacramento
Metropolitan Air Quality Management District (SMAQMD or ``District'')
to address Clean Air Act (CAA or ``Act'') requirements related to the
2008 8-hour ozone national ambient air quality standards (NAAQS or
``standards''). These revisions concern emissions of oxides of nitrogen
(NOX) from boilers, gas turbines, and miscellaneous (misc) combustion
units and reasonably available control technology (RACT) requirements
for major sources of NOX in the portion of the Sacramento Metro, CA,
nonattainment area that is subject to SMAQMD jurisdiction. We are
taking comments on this proposal and plan to follow with a final
action.
DATES: Comments must be received on or before August 1, 2024.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R09-
OAR-2024-0197 at <a href="https://www.regulations.gov">https://www.regulations.gov</a>. For comments submitted at
<a href="http://Regulations.gov">Regulations.gov</a>, follow the online instructions for submitting
comments. Once submitted, comments cannot be edited or removed from
<a href="http://Regulations.gov">Regulations.gov</a>. The EPA may publish any comment received to its public
docket. Do not submit electronically any information you consider to be
Confidential Business Information (CBI) or other information whose
disclosure is restricted by statute. Multimedia submissions (audio,
video, etc.) must be accompanied by a written comment. The written
comment is considered the official comment and should include
discussion of all points you wish to make. The EPA will generally not
[[Page 54749]]
consider comments or comment contents located outside of the primary
submission (i.e., on the web, cloud, or other file sharing system). For
additional submission methods, please contact the person identified in
the FOR FURTHER INFORMATION CONTACT section. For the full EPA public
comment policy, information about CBI or multimedia submissions, and
general guidance on making effective comments, please visit <a href="https://www.epa.gov/dockets/commenting-epa-dockets">https://www.epa.gov/dockets/commenting-epa-dockets</a>. If you need assistance in a
language other than English or if you are a person with a disability
who needs a reasonable accommodation at no cost to you, please contact
the person identified in the FOR FURTHER INFORMATION CONTACT section.
FOR FURTHER INFORMATION CONTACT: Eugene Chen, EPA Region IX, 75
Hawthorne Street (AIR-3-3), San Francisco, CA 94105. By phone: (415)
947-4304 or by email at <a href="/cdn-cgi/l/email-protection#dcbfb4b9b2f2b9a9bbb9b2b99cb9acbdf2bbb3aa"><span class="__cf_email__" data-cfemail="2a49424f44044f5f4d4f444f6a4f5a4b044d455c">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION: Throughout this document, ``we,'' ``us,''
and ``our'' refer to the EPA.
Table of Contents
I. The State's Submittal
A. What documents did the State submit?
B. Are there other versions of the submitted documents?
C. What is the purpose of the submitted documents?
II. The EPA's Evaluation and Proposed Action
A. How is the EPA evaluating the submitted documents?
B. Do the submitted documents meet the evaluation criteria?
1. Boilers
2. Gas Turbines
3. Miscellaneous Combustion Units
C. Public Comment and Proposed Action
III. Incorporation by Reference
IV. Statutory and Executive Order Reviews
I. The State's Submittal
A. What documents did the State submit?
Table 1 lists the documents addressed by this proposal with the
dates that they were adopted by the local air agency and submitted by
the California Air Resources Board (CARB).
Table 1--Submitted Documents
----------------------------------------------------------------------------------------------------------------
Document/rule
Local agency No. Document title Adopted Submitted
----------------------------------------------------------------------------------------------------------------
SMAQMD........................ .............. Reasonably Available Control 03/28/2024 04/11/2024
Technology (RACT) Permits for
Major Stationary Sources of
Nitrogen Oxides.
----------------------------------------------------------------------------------------------------------------
On March 28, 2024, SMAQMD adopted portions of several permits
issued under the District's SIP-approved New Source Review (NSR) permit
program for submittal into the SIP. These permits contain requirements
that regulate emissions of NO<INF>X</INF>, and the District adopted
these permits for SIP submission to ensure that its major sources of
NO<INF>X</INF> are subject to federally enforceable RACT requirements.
A list of the permits (``District Permits'') contained in this SIP
revision is included in Table 2 below. On April 11, 2024, CARB
submitted this SIP revision to the EPA for approval as a revision to
the California SIP. The EPA has reviewed this submittal and finds that
it fulfills the completeness criteria of appendix V.\1\
---------------------------------------------------------------------------
\1\ See Docket Item A-14, 40 CFR Appendix V to Part 51--Criteria
for Determining the Completeness of Plan Submissions.
Table 2--District Permits Included in April 11, 2024 Submittal
----------------------------------------------------------------------------------------------------------------
Unit size
Source name Permit No. Unit name/ID (MMBtu/hr) Unit type
----------------------------------------------------------------------------------------------------------------
Mitsubishi Chemical Carbon 24611 Oxidation Oven 1 2 Misc Combustion Unit.
Fiber and Composites. 25925 Oxidation Oven 2 2 Misc Combustion Unit.
24613 Oxidation Oven 3 2 Misc Combustion Unit.
24614 Oxidation Oven 4 2 Misc Combustion Unit.
25397 Oxidation Oven-- 3 Misc Combustion Unit.
Line 31.
25398 Oxidation Oven-- 3 Misc Combustion Unit.
Line 31.
25399 Cleaver Brooks 6 Boiler.
Boiler.
UC Davis Medical Center....... 17549 Combined Cycle 260 Gas Turbine.
Turbine.
20216 Boiler 1........ 32 Boiler.
20217 Boiler 2........ 32 Boiler.
20218 Boiler 3........ 32 Boiler.
20219 Boiler 4........ 32 Boiler.
Sacramento Metropolitan 27410 Babcock & Wilcox 109 Boiler.
Utility District (SMUD) 27141 Boiler. 583 Gas Turbine.
Procter & Gamble Power Plant. 27142 Gas Turbine 1A.. 583 Gas Turbine.
27143 Gas Turbine 1B.. 500 Gas Turbine.
27144 Gas Turbine 1C.. 109 Boiler.
Boiler 1B.......
SMUD Cosumnes Power Plant..... 25801 Turbine 2....... 2,200 Gas Turbine.
25800 Turbine 3....... 2,200 Gas Turbine.
SMUD Campbell Power Plant..... 27118 Gas Turbine..... 1,410 Gas Turbine.
SMUD Carson Power Plant....... 27151 Turbine 27151... 600 Gas Turbine.
27154 Cleaver Brooks 100 Boiler.
Boiler.
27156 Turbine 27156... 450 Gas Turbine.
----------------------------------------------------------------------------------------------------------------
[[Page 54750]]
B. Are there other versions of the submitted documents?
We have not previously approved district permits into the SIP for
any of the sources listed in Table 2. The District Permits were
submitted to address our June 30, 2023 action that finalized a partial
approval and partial disapproval of the District's ``Demonstration of
Reasonably Available Control Technology for the 2008 Ozone NAAQS''
(``2017 RACT SIP''). The District's 2017 RACT SIP was submitted to
demonstrate that its stationary sources are subject to RACT rules for
the 2008 8-hour ozone NAAQS.\2\ Our partial disapproval related solely
to the RACT element for major sources of NO<INF>X</INF> that relied
upon three district rules: Rule 411 (NO<INF>X</INF> from Boilers,
Process Heaters and Steam Generators), Rule 413 (Stationary Gas
Turbines), and Rule 419 (NO<INF>X</INF> from Miscellaneous Combustion
Units). Rules 411 and 413 have previously been approved into the SIP,
but Rule 419 was locally adopted and submitted to the EPA as part of
the 2017 RACT SIP development process and has not been approved into
the SIP. As part of our June 30, 2023 final action, we identified
deficiencies with the submitted version of Rule 419 but did not act to
approve or disapprove that rule. As discussed in greater detail below,
the District elected to submit source-specific permits, rather than
submitting rule revisions, to address the deficiencies we identified in
our June 30, 2023 final action.
---------------------------------------------------------------------------
\2\ 88 FR 42248.
---------------------------------------------------------------------------
C. What is the purpose of the submitted documents?
Emissions of NO<INF>X</INF> contribute to the production of ground-
level ozone, smog and particulate matter (PM), which harm human health
and the environment. Section 110(a) of the CAA requires states to
submit plans that provide for implementation, maintenance, and
enforcement of the NAAQS. In addition, CAA sections 182(b)(2) and (f)
require that SIPs for ozone nonattainment areas classified as
``Moderate'' or higher implement RACT for any category of sources
covered by a control techniques guidelines (CTG) document and for any
major stationary source of volatile organic compounds (VOCs) or
NO<INF>X</INF>. The SMAQMD regulates the Sacramento County portion of
the Sacramento Metro, CA, ozone nonattainment area that is classified
as ``Severe'' nonattainment for the 2008 ozone NAAQS.\3\ Therefore, the
SMAQMD must, at a minimum, ensure that all categories of sources
covered by a CTG document and all major stationary sources of VOCs or
NO<INF>X</INF> within the District implement RACT-level controls. In a
Severe ozone nonattainment area, any stationary source that emits or
has the potential to emit at least 25 tons per year (tpy) of VOCs or
NO<INF>X</INF> is considered a major stationary source.
---------------------------------------------------------------------------
\3\ 40 CFR 81.305.
---------------------------------------------------------------------------
The SMAQMD relies upon several district rules to implement RACT for
major sources of NO<INF>X</INF>, including Rule 411 (NO<INF>X</INF>
from Boilers, Process Heaters and Steam Generators), Rule 413
(Stationary Gas Turbines), and Rule 419 (NO<INF>X</INF> from
Miscellaneous Combustion Units). As we explained in our June 30, 2023
final action on the 2017 RACT SIP, Rule 413 contains a provision that
explicitly exempts affected units from complying with emission
limitations during periods of startup and shutdown and does not provide
for an alternative emission limitation during such periods. Rules 411
and 419 contain monitoring provisions that preclude the use of
specified data for determining compliance with emission limitations
during periods of startup and shutdown. These provisions are
inconsistent with the EPA's Startup, Shutdown, and Malfunction (SSM)
Policy as established in the EPA's 2015 SSM SIP Action.\4\ The
deficiencies with these three rules were the basis for our disapproval
of the major source NO<INF>X</INF> element of the 2017 RACT SIP.
---------------------------------------------------------------------------
\4\ ``State Implementation Plans: Response to Petition for
Rulemaking; Restatement and Update of EPA's SSM Policy Applicable to
SIPs; Findings of Substantial Inadequacy; and SIP Calls To Amend
Provisions Applying to Excess Emissions During Periods of Startup,
Shutdown and Malfunction,'' 80 FR 33840 (June 12, 2015).
---------------------------------------------------------------------------
In Environ. Comm. Fl. Elec. Power v. EPA, 94 F.4th 77 (D.C. Cir.
2024), the D.C. Circuit held that the EPA impermissibly issued a SIP
call, under CAA section 110(k)(5), in its 2015 SSM SIP Action \5\ for
certain SIP provisions applicable to emissions during SSM events,
including certain automatic exemption type provisions that the EPA had
previously approved.\6\ While the D.C. Circuit vacated certain SIP
calls in EPA's 2015 SSM SIP Action, that vacatur was premised on the
view that the Agency did not make a predicate determination that the
specific provisions at issue were emissions limitations or that it was
``necessary or appropriate'' under CAA 110(a)(2)(A) that the SIP
provisions must be emission limitations. EPA continues to interpret its
longstanding interpretation that, pursuant to CAA section 302(k),
emission limitations must be continuous and apply at all times,
consistent with the decision in Environ. Comm. Fl. Elec. Power v. EPA.
The Court did not vacate EPA's longstanding guidance for developing
alternative emission limitations (AELs), should a state or air
jurisdiction choose to develop and submit AELs into their SIP as a
means to ensuring they are meeting the applicable CAA requirement that
emission limitations must be continuous.\7\ States and/or air
jurisdictions are not precluded from submitting a SIP revision that
establishes AELs, as SMAQMD did so here.
---------------------------------------------------------------------------
\5\ See 80 FR 33840.
\6\ See Environ. Comm. Fl. Elec. Power v. EPA, 94 F.4th 77 (D.C.
Cir. 2024).
\7\ See 80 FR 33912-33914 and State Implementation Plans: Policy
Regarding Excess Emissions During Malfunction, Startup, and Shutdown
(1999 SSM Guidance).
---------------------------------------------------------------------------
Following our June 30, 2023 final action disapproving the major
source NO<INF>X</INF> RACT element, SMAQMD examined the permits issued
under the District's SIP-approved NSR permit program for each of the
NO<INF>X</INF> major sources that rely upon Rule 411, 413, or 419 for
RACT. The District identified conditions in each district permit that
established NO<INF>X</INF> emission limits that apply at all times.
SMAQMD also identified monitoring, recordkeeping, and reporting
conditions from each district permit to determine compliance with the
rule and permit requirements. These District Permits are intended to
remedy the SSM deficiencies, in combination with Rule 411 and Rule 413
requirements, and are intended to implement RACT for major sources of
NO<INF>X</INF> in the District. Our technical support document (TSD)
has more detailed information about these District Permits.
In addition, we note that the locally-adopted NSR permits that
served as the basis of the submitted District Permits contain emission
limits and other requirements unrelated to NO<INF>X</INF> RACT that the
District is not seeking to approve into the SIP. As a result, the
District has redacted those portions of the submitted permits, such as
conditions related to carbon monoxide (CO), particulate matter (PM),
state toxics, and other requirements that are not necessary for
implementing NO<INF>X</INF> RACT.
II. The EPA's Evaluation and Proposed Action
A. How is the EPA evaluating the submitted documents?
Rules in the SIP must be enforceable (see CAA section 110(a)(2))
and must not interfere with applicable requirements concerning
attainment and
[[Page 54751]]
reasonable further progress or other CAA requirements (see CAA section
110(l)). Generally, SIP rules must require the implementation of RACT
for each category of sources covered by a CTG, as well as each major
source of NO<INF>X</INF> or VOC in ozone nonattainment areas classified
as Moderate or higher (see CAA section 182(b)(2)). The SMAQMD regulates
a portion of an ozone nonattainment area classified as Severe for the
2008 ozone NAAQS and is therefore responsible for ensuring that the
applicable sources implement RACT-level controls for that ozone
standard. The District Permits were submitted to be incorporated into
the SIP to implement RACT-level controls and to fulfill the
requirements associated with the major source NO<INF>X</INF> element
for the 2008 ozone NAAQS.
Guidance and policy documents that we used to evaluate
enforceability, revision/relaxation, and stringency requirements for
the applicable criteria pollutants include the following:
1. ``State Implementation Plans; General Preamble for the
Implementation of Title I of the Clean Air Act Amendments of 1990,'' 57
FR 13498 (April 16, 1992); 57 FR 18070 (April 28, 1992).
2. ``Issues Relating to VOC Regulation Cutpoints, Deficiencies, and
Deviations,'' EPA, May 25, 1988 (the Bluebook, revised January 11,
1990).
3. ``Guidance Document for Correcting Common VOC & Other Rule
Deficiencies,'' EPA Region 9, August 21, 2001 (the Little Bluebook).
4. State Implementation Plans: Response to Petition for Rulemaking;
Restatement and Update of EPA's SSM Policy Applicable to SIPs; Findings
of Substantial Inadequacy; and SIP Calls to Amend Provisions Applying
to Excess Emissions During Periods of Startup, Shutdown and
Malfunction,'' 80 FR 33839, June 12, 2015.
5. ``Guidance Memorandum: Withdrawal of the October 9, 2020,
Memorandum Addressing Startup, Shutdown, and Malfunctions in State
Implementation Plans and Implementation of the Prior Policy,''
September 30, 2021.
B. Do the submitted documents meet the evaluation criteria?
We have grouped our evaluation of the submitted documents into
three categories corresponding to the three types of units that
comprise the major NO<INF>X</INF> sources listed in Table 2.
1. Boilers
The SMAQMD is relying upon requirements contained in the current
SIP-approved version of Rule 411 and in the submitted District Permits
to implement RACT for the boilers listed in Table 2. In our June 30,
2023 final action on the 2017 RACT SIP, we evaluated the stringency of
applicable Rule 411 NO<INF>X</INF> limits, which vary from 9 parts per
million (ppm) to 15 ppm, and do not apply during periods of startup and
shutdown.\8\ We determined that the emission limits in SIP-approved
Rule 411 achieve RACT-level stringency, but we disapproved based on the
Agency's SSM policy. We have not identified any information since our
June 30, 2023 final action to alter our evaluation that the stringency
of the NO<INF>X</INF> emission limits are RACT.
---------------------------------------------------------------------------
\8\ 88 FR 42248. See TSD for that action, which is also included
in the docket for this rulemaking.
---------------------------------------------------------------------------
The District Permits contain source-specific pound per day (lb/day)
NO<INF>X</INF> limits for each boiler listed in Table 2. These lb/day
mass emission limits are continuous and apply at all times. They were
developed by converting the allowable short-term pound per hour (lb/hr)
emission limit applicable during normal operations for each source to a
24-hr average basis. The allowable lb/hr emission limit for each source
was established pursuant to the control technology determinations made
via the NSR permitting process and is based upon a concentration limit
that varies by district permit between 5 to 9 ppm.\9\ Submitting these
lb/day limits into the SIP will ensure that mass emissions during
startup and shutdown do not exceed the mass emissions allowed during
periods of normal operation on a 24-hour average basis. As discussed
above, we consider the Rule 411 NO<INF>X</INF> limits to achieve RACT-
level stringency, and these lb/hr District Permit limits achieve or
exceed this same level of stringency on a mass basis, and they are
applicable at all times. As a result, when combined with Rule 411
limits, these District permit limits will ensure that the affected
units are subject to limits with RACT-level stringency at all times. In
addition, we determined that the emission limits contained in these
District Permits are consistent with the criteria recommended in the
EPA's SSM Policy as appropriate considerations for developing emission
limitations in the SIP provisions applicable during startup and
shutdown. Additional information regarding our evaluation of District
Permit limits, including their consistency with SSM policy criteria, is
included in our TSD for this action. Based on the existing SIP-approved
NO<INF>X</INF> limits in Rule 411, combined with the NO<INF>X</INF>
limits that apply at all times contained in the submitted District
Permits, we propose to determine that the District has established
requirements in the SIP that are consistent with the EPA's SSM policy
and implement RACT for the boilers listed in Table 2.
---------------------------------------------------------------------------
\9\ In no case is any source's short term lb/hr emission limit
based on a concentration higher than 9 ppm, which is also the most
stringent NO<INF>X</INF> emission standard established in Rule 411.
---------------------------------------------------------------------------
2. Gas Turbines
For the gas turbines listed in Table 2, the SMAQMD is relying upon
requirements contained in the current SIP-approved version of Rule 413
and in the submitted District Permits to implement RACT. In our June
30, 2023 final action on the 2017 RACT SIP, we evaluated the stringency
of the 9 ppm NO<INF>X</INF> limit established by the SIP-approved
version of Rule 413.\10\ We determined that the emission limit in SIP-
approved Rule 413 achieves RACT-level stringency but disapproved based
on the Agency's SSM policy because the emission limits in the rule do
not apply during periods of startup and shutdown. We have not
identified any information since our June 30, 2023 final action to
alter our evaluation that the stringency of the NO<INF>X</INF> emission
limits comprise RACT.
---------------------------------------------------------------------------
\10\ 88 FR 42252. See also TSD for that action, which is
available in the docket for this rulemaking.
---------------------------------------------------------------------------
The District Permits contain source-specific lb/day NO<INF>X</INF>
limits for each gas turbine listed in Table 2. These lb/day mass
emission limits are continuous and apply at all times. The source-
specific lb/day NO<INF>X</INF> limits for the gas turbines were
developed by examining the maximum number of hours of each mode of
operation is allowed in a single day, the maximum lb/hr emission rate
for each mode of operation (either startup or normal operation), and
summing the 24 hourly mass emission values corresponding to each hour's
mode of operation to develop a total lb/day emission limit. The maximum
lb/hr emission limit during normal operations for each source was
established pursuant to the control technology determinations made via
the NSR permitting process and is based on a concentration limit that
varies by district permit between 2.5 to 5 ppm.\11\ As a result, the
lb/day limits in each source's district permit, which apply at all
times, will constrain mass emissions of NO<INF>X</INF> to a level
consistent with maximum permitted frequency and duration of shutdown
events and also to a level of normal operations that is more stringent
than Rule 413 concentration
[[Page 54752]]
limits. In other words, we consider the Rule 413 NO<INF>X</INF> limits
to achieve RACT-level stringency because these District Permit limits
achieve or exceed the most stringent level of control in these limits
on a mass basis and they are applicable at all times. Thus, when
combined with Rule 413 emission limits, the District permit limits will
ensure that the affected units are subject to RACT-level stringency at
all times. We have determined that the lb/day emission limits contained
in these District Permits are consistent with the criteria recommended
in the EPA's SSM Policy as appropriate considerations for developing
emission limitations in SIP provisions applicable during startup and
shutdown. Further details regarding our evaluation of District Permit
limits, including their consistency with SSM policy criteria, are
included in our TSD for this action.
---------------------------------------------------------------------------
\11\ In all cases, each source's short term lb/hr emission limit
during normal operations is based on a concentration limit that is
more stringent than 9 ppm, which is the most stringent
NO<INF>X</INF> emission standard established in Rule 413.
---------------------------------------------------------------------------
Based on the existing SIP-approved NO<INF>X</INF> limits in Rule
413, combined with the NO<INF>X</INF> limits that apply at all times
contained in the submitted District Permits, we propose to determine
that the District has established requirements in the SIP that are
consistent with the EPA's SSM policy and implement RACT for the gas
turbines listed in Table 2.
3. Miscellaneous Combustion Units
Unlike for boilers and gas turbines, the SMAQMD is not relying upon
Rule 419 requirements to implement RACT for the miscellaneous
combustion units (carbon fiber oxidation ovens) listed in Table 2.
Instead, it is only relying upon the requirements contained in the
submitted District Permits. As discussed in our June 30, 2023 final
action on the 2017 RACT SIP, the ovens listed in Table 2 are subject to
Rule 419, which was submitted to the EPA for incorporation into the SIP
on January 31, 2019. We have not yet proposed action on Rule 419, and
no version of it has been previously approved into the SIP.
The District Permits establish NO<INF>X</INF> concentration limits
of 30 ppm for each oven. These limits are continuous and apply at all
times. The EPA has not published a CTG document or Alternative Control
Techniques (ACT) document that is relevant for the control of
NO<INF>X</INF> emissions for units such as the carbon fiber oxidation
ovens. As a result, we have evaluated the District Permit limits
through comparison with NO<INF>X</INF> limits established in
miscellaneous combustion unit rules from other California air
districts. We have summarized these values in Table 3 below.
Table 3--Comparison of Miscellaneous Combustion Unit Emission Limits (Gaseous Fuel Only)
--------------------------------------------------------------------------------------------------------------------------------------------------------
San Joaquin
Valley unified
Sacramento (SJVU) air
metro AQMD pollution Imperial county APCD rule Ventura county APCD rule
Equipment category district control South coast AQMD rule 1147 400.4 74.34
permits district
(APCD) rule
4309
--------------------------------------------------------------------------------------------------------------------------------------------------------
NOX emission limit in parts per mission by volume (ppmv)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Asphalt Manufacturing............... .............. 40 40........................ .......................... 40.
Incinerator/Crematory............... .............. .............. 60........................
Metal Heat Treating/Metal Melting .............. .............. 60........................ .......................... 60.
Furnace.
Oven, Dehydrator, Dryer, Heater, or 30 .............. 30 or 60 \a\.............. 30 \c\.................... 80.
Kiln.
Other Miscellaneous combustion unit. .............. 40 30........................ .......................... 30 or 60.\a\
All miscellaneous combustion units .............. 40-110 40 or 60.\a\
when liquid fuel-fired.
Cooking Unit........................ .............. .............. .......................... 40 or 60.\b\
--------------------------------------------------------------------------------------------------------------------------------------------------------
\a\ 60 ppm if process temperature >=1,200 deg F.
\b\ 60 ppm if process temperature >=500 deg F.
\c\ Imperial County APCD Rule 400.4 applies to wallboard kilns only.
As seen in Table 3 above, the 30 ppm limit established in the
District Permits is equal to or exceeds the NO<INF>X</INF> emission
limit established for ovens in other examined ozone nonattainment
areas. In particular, the limit established in the District Permits
could be considered the most stringent limit among all of those
evaluated, since it does not provide a separate limit when a unit is
operating above specific process temperatures.
The District Permits also contain source-specific lb/day
NO<INF>X</INF> limits for each oven. These lb/day mass emission limits
are continuous and apply at all times. They were developed by
converting the allowable short-term lb/hr emission limit applicable
during normal operations for each source to a 24-hr average basis. The
allowable lb/hr emission limit for each source was established pursuant
to the control technology determinations made via the NSR permitting
process and corresponds to the 30 ppm NO<INF>X</INF> concentration
limit. Submitting these lb/day limits into the SIP will provide an
additional constraint to ensure that mass emissions during startup and
shutdown do not exceed the mass emissions allowed during periods of
normal operation on a 24-hour average basis. As a result, we propose to
determine that the District has established requirements in the SIP
that implement RACT for the miscellaneous combustion units listed in
Table 2.
Finally, for each of the boilers, gas turbines, and miscellaneous
combustion units listed in Table 2, we are proposing to determine that
our approval of the District Permits for each of the sources would
comply with CAA section 110(l), because the proposed SIP revision would
strengthen the SIP by adding new requirements and would not interfere
with any applicable CAA requirements, including requirements for RFP
and attainment of the NAAQS. CAA section 193 does not apply to this
action because the District Permit conditions have not previously been
approved into the SIP and were therefore not in effect before November
15, 1990.
C. Public Comment and Proposed Action
As authorized in section 110(k)(3) of the Act, the EPA proposes to
approve the District Permits, as adopted on March 28, 2024, into the
California SIP. Based on our discussion in Section II.B of this
document, we propose to determine that the District Permits will comply
with the EPA's SSM policy and other applicable CAA requirements and
will, in conjunction with the SIP-approved NO<INF>X</INF> limits
already established in Rule 411 and 413,
[[Page 54753]]
implement RACT for each major NO<INF>X</INF> source in the District.
In addition, as discussed in our June 30, 2023 final action, the
absence of emission limits that apply at all times was the basis for
our disapproval of the major source NO<INF>X</INF> element of the 2017
RACT SIP. Since we are proposing to determine that the District
Permits, in conjunction with the SIP-approved NO<INF>X</INF> limits
already established in Rule 411 and 413, implement RACT for each major
NO<INF>X</INF> source in the District, we are also proposing to approve
the major source NO<INF>X</INF> element of the District's 2017 RACT
SIP.
We will accept comments from the public on this proposal until
August 1, 2024. If we take final action to approve the District Permits
as proposed, our final action will incorporate these District Permits
into the federally enforceable SIP. In addition, it will permanently
stop the sanctions and Federal implementation plan (FIP) clocks started
by our June 30, 2023 final action, and it will address the EPA's
obligation to promulgate a FIP arising from our February 3, 2017
finding of failure to submit.\12\
---------------------------------------------------------------------------
\12\ 82 FR 9158. The sanctions clock triggered by this finding
of failure to submit was permanently stopped by a finding of
completeness made by the EPA on August 23, 2018 for the District's
2017 RACT SIP submittal.
---------------------------------------------------------------------------
III. Incorporation by Reference
In this rule, the EPA is proposing to include in a final EPA rule
regulatory text that includes incorporation by reference. In accordance
with requirements of 1 CFR 51.5, the EPA is proposing to incorporate by
reference the District Permits listed in Table 2, as adopted on March
28, 2024, which regulate NO<INF>X</INF> emissions from boilers, gas
turbines, and miscellaneous combustion units. The EPA has made, and
will continue to make, these materials available through <a href="https://www.regulations.gov">https://www.regulations.gov</a> and at the EPA Region IX Office (please contact the
person identified in the FOR FURTHER INFORMATION CONTACT section of
this preamble for more information).
IV. Statutory and Executive Order Reviews
Under the CAA, the Administrator is required to approve a SIP
submission that complies with the provision of the Act and applicable
federal regulations. 42 U.S.C. 740(k); 40 CFR 52.02(a). Thus, in
reviewing SIP submissions, the EPA's role is to review state choices,
and approve those choices if they meet the minimum criteria of the Act.
Accordingly, this proposed action merely proposes to approve state law
as meeting federal requirements and does not impose additional
requirements beyond those imposed by state law. For that reason, this
proposed action:
<bullet> 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 14094 (88 FR 21879, April 11, 2023);
<bullet> Does not impose an information collection burden under the
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
<bullet> 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.);
<bullet> 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);
<bullet> Does not have federalism implications as specified in
Executive Order 13132 (64 FR 43255, August 10, 1999);
<bullet> Is not subject to Executive Order 13045 (62 FR 19885,
April 23, 1997) because it proposes to approve a state program;
<bullet> Is not a significant regulatory action subject to
Executive Order 13211 (66 FR 28355, May 22, 2001); and
<bullet> 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 CAA.
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 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).
Executive Order 12898 (Federal Actions To Address Environmental
Justice in Minority Populations and Low-Income Populations, 59 FR 7629,
Feb. 16, 1994) directs Federal agencies to identify and address
``disproportionately high and adverse human health or environmental
effects'' of their actions on minority populations and low-income
populations to the greatest extent practicable and permitted by law.
The EPA defines environmental justice (EJ) as ``the fair treatment and
meaningful involvement of all people regardless of race, color,
national origin, or income with respect to the development,
implementation, and enforcement of environmental laws, regulations, and
policies.'' The EPA further defines the term fair treatment to mean
that ``no group of people should bear a disproportionate burden of
environmental harms and risks, including those resulting from the
negative environmental consequences of industrial, governmental, and
commercial operations or programs and policies.''
The State did not evaluate EJ considerations as part of its SIP
submittal; the CAA and applicable implementing regulations neither
prohibit nor require such an evaluation. The EPA did not perform an EJ
analysis and did not consider EJ in this action. Consideration of EJ is
not required as part of this action, and there is no information in the
record inconsistent with the stated goal of E.O. 12898 of achieving EJ
for people of color, low-income populations, and Indigenous peoples.
List of Subjects in 40 CFR Part 52
Environmental protection, Air pollution control, Incorporation by
reference, Intergovernmental relations, Nitrogen oxides, Ozone,
Reporting and recordkeeping requirements.
Dated: June 25, 2024.
Martha Guzman Aceves,
Regional Administrator, Region IX.
[FR Doc. 2024-14336 Filed 7-1-24; 8:45 am]
BILLING CODE 6560-50-P
</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>Indexed from Federal Register on July 2, 2024.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.