[Federal Register Volume 81, Number 145 (Thursday, July 28, 2016)]
[Proposed Rules]
[Pages 49592-49598]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-17714]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[EPA-R10-OAR-2013-0004: FRL-9949-69-Region 10]
Partial Approval and Partial Disapproval of Attainment Plan for
Oakridge, Oregon PM2.5 Nonattainment Area
AGENCY: Environmental Protection Agency.
ACTION: Proposed rule.
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SUMMARY: On December 12, 2012, the Oregon Department of Environmental
Quality (ODEQ) submitted, on behalf of the Governor of Oregon, a State
Implementation Plan (SIP) submission to address violations of the
National Ambient Air Quality Standards (NAAQS) for particulate matter
with an aerodynamic diameter of less than or equal to a nominal 2.5
micrometers in diameter (PM2.5) for the Oakridge
PM2.5 nonattainment area (2012 SIP submission). The Lane
Regional Air Protection Agency (LRAPA) in coordination with ODEQ
developed the 2012 SIP submission for purposes of attaining the 2006
24-hour PM2.5 NAAQS. On February 22, 2016, the ODEQ withdrew
certain provisions of the 2012 SIP submission (2016 SIP withdrawal).
The Environmental Protection Agency (EPA) has evaluated whether the
remaining portions of the Oakridge 2012 SIP submission meet the
applicable Clean Air Act (CAA) requirements. Based on this evaluation,
the EPA is proposing to partially approve and partially disapprove the
remaining portions of the 2012 SIP submission.
DATES: Comments must be received on or before August 29, 2016.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R10-
OAR-2013-0004 at http://www.regulations.gov. Follow the online
instructions for submitting comments. Once submitted, comments cannot
be edited or removed from Regulations.gov. 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 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, the full EPA
public comment policy, information about CBI or multimedia submissions,
and general guidance on making effective comments, please visit http://www2.epa.gov/dockets/commenting-epa-dockets.
Docket: All documents in the electronic docket are listed in the
http://www.regulations.gov index. Although listed in the index, some
information is not publicly available, i.e., CBI or other information
that is restricted by statute from disclosure. 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 at http://www.regulations.gov or at EPA Region
10, Office of Air and Waste, 1200 Sixth Avenue, Seattle, Washington
98101. The EPA requests that you contact the person listed in the FOR
FURTHER INFORMATION CONTACT section to schedule your inspection. The
Regional Office's official hours of business are Monday through Friday,
8:30 a.m. to 4:30 p.m., excluding Federal holidays.
FOR FURTHER INFORMATION CONTACT: Christi Duboiski at (360) 753-9081,
[email protected], or the above EPA, Region 10 address.
SUPPLEMENTARY INFORMATION: Throughout this document, wherever ``we'',
``us'' or ``our'' are used, it is intended to refer to the EPA.
Table of Contents
I. Background for the EPA's Proposed Action
A. History of the PM2.5 NAAQS
B. January 4, 2013 D.C. Circuit Court Decision Regarding
PM2.5 Implementation Under Subpart 4
C. CAA PM2.5 Moderate Area Nonattainment SIP
Requirements
II. Content of 2012 SIP Submission and the EPA's Evaluation
III. Consequences of Disapproved SIP Provisions
IV. The EPA's Proposed Action
V. Statutory and Executive Order Reviews
I. Background for the EPA's Proposed Action
A. History of the PM2.5 NAAQS
On July 18, 1997, the EPA promulgated the 1997 PM2.5
NAAQS, including annual standards of 15.0 [micro]g/m\3\ based on a 3-
year average of annual mean PM2.5 concentrations, and 24-
hour (or daily) standards of 65 [micro]g/m\3\ based on a 3-year average
of the 98th percentile of 24-hour concentrations (62 FR 38652). The EPA
established the
[[Page 49593]]
1997 PM2.5 NAAQS based on significant evidence and numerous
health studies demonstrating the serious health effects associated with
exposures to PM2.5. To provide guidance on the CAA
requirements for state and tribal implementation plans to implement the
1997 PM2.5 NAAQS, the EPA promulgated the ``Final Clean Air
Fine Particle Implementation Rule'' (72 FR 20586, April 25, 2007)
(hereinafter, the ``2007 PM2.5 Implementation Rule'').
On October 17, 2006, the EPA strengthened the 24-hour
PM2.5 NAAQS to 35 [micro]g/m\3\ and retained the level of
the annual PM2.5 standard at 15.0 [micro]g/m\3\ (71 FR
61144). Following promulgation of a new or revised NAAQS, the EPA is
required by the CAA to promulgate designations for areas throughout the
United States; this designation process is described in section
107(d)(1) of the CAA. On November 13, 2009, the EPA designated areas
across the United States with respect to the revised 2006 24-hour
PM2.5 NAAQS (74 FR 58688). In that November 2009 action, the
EPA designated Oakridge, Oregon, and a small surrounding area as
nonattainment for the 2006 24-hour PM2.5 NAAQS (Oakridge
NAA), requiring Oregon to prepare and submit to the EPA an attainment
plan for the Oakridge NAA to meet the 2006 24-hour PM2.5
NAAQS. On March 2, 2012, the EPA issued ``Implementation Guidance for
the 2006 24-Hour Fine Particulate (PM2.5) National Ambient
Air Quality Standards (NAAQS)'' to provide guidance on the development
of SIPs to demonstrate attainment with the 24-hour standards (March
2012 Implementation Guidance). The March 2012 Implementation Guidance
explained that the overall framework and policy approach of the 2007
PM2.5 Implementation Rule provided effective and appropriate
guidance on statutory requirements for the development of SIPs to
attain the 2006 24-hour PM2.5 NAAQS. Accordingly, the March
2012 Implementation Guidance instructed states to rely on the 2007
PM2.5 Implementation Rule in developing SIPs to demonstrate
attainment with the 2006 24-hour PM2.5 NAAQS.
B. January 4, 2013 D.C. Circuit Court Decision Regarding
PM2.5 Implementation Under Subpart 4
On January 4, 2013, the D.C. Circuit Court issued a decision in
Natural Resources Defense Council v. EPA, 706 F.3d 428, holding that
the EPA erred in implementing the 1997 PM2.5 NAAQS pursuant
to the general implementation provisions of subpart 1 of Part D of
Title I of the CAA (subpart 1), rather than the particulate-matter-
specific provisions of subpart 4 of Part D of Title I (subpart 4). The
Court did not vacate the 2007 PM2.5 Implementation Rule but
remanded the rule with instructions for the EPA to promulgate new
implementation regulations for the PM2.5 NAAQS in accordance
with the requirements of subpart 4. On June 6, 2013, consistent with
the Court's remand decision, the EPA withdrew its March 2012
Implementation Guidance which relied on the 2007 PM2.5
Implementation Rule to provide guidance for the 2006 24-hour
PM2.5 NAAQS.
Prior to the January 4, 2013 NRDC decision, states had worked
towards meeting the air quality goals of the 2006 PM2.5
NAAQS in accordance with the EPA regulations and guidance derived from
subpart 1 of Part D of Title I of the CAA. The EPA considered this
history in issuing the PM2.5 Subpart 4 Nonattainment
Classification and Deadline Rule (79 FR 31566, June 2, 2014) that
identified the initial classification under subpart 4 for areas
currently designated nonattainment for the 1997 and/or 2006
PM2.5 NAAQS as ``moderate'' nonattainment areas. The final
rule also established December 31, 2014 as the new deadline for the
states to submit any additional SIP submissions related to attainment
for the 1997 or 2006 PM2.5 NAAQS.
The ODEQ submitted an attainment plan for the Oakridge NAA on
December 12, 2012. The plan included measures intended to demonstrate
attainment of the 2006 PM2.5 NAAQS by December 31, 2014. In
this notice the EPA evaluates the State's existing attainment plan
submission for the 2006 PM2.5 NAAQS to determine whether it
meets the applicable statutory requirements. The applicable statutory
requirements include not only the applicable requirements of subpart 1,
but also the applicable requirements of subpart 4. This interpretation
is consistent with the NRDC Court's decision that the EPA must
implement the PM2.5 NAAQS consistent with the requirements
of subpart 4.
C. CAA PM2.5 Moderate Area Nonattainment SIP Requirements
With respect to the requirements for attainment plans for the
PM2.5 NAAQS, the EPA notes that the general nonattainment
area planning requirements are found in subpart 1, and the moderate
area planning requirements specifically for particulate matter are
found in subpart 4. The EPA has a longstanding general guidance
document that interprets the 1990 amendments to the CAA commonly
referred to as the ``General Preamble'' (57 FR 13498, April 16, 1992).
The General Preamble addresses the relationship between subpart 1 and
subpart 4 requirements and provides recommendations to states for
meeting statutory requirements for particulate matter attainment
planning. Specifically, the General Preamble explains that requirements
applicable to moderate area attainment plan SIP submissions are set
forth in subpart 4, but such SIP submissions must also meet the general
attainment planning provisions in subpart 1, to the extent these
provisions ``are not otherwise subsumed by, or integrally related to,''
the more specific subpart 4 requirements (57 FR 13538). Additionally,
the EPA proposed the Fine Particulate Matter National Ambient Air
Quality Standards: State Implementation Plan Requirements rule (80 FR
15340, March 23, 2015), to clarify our interpretations of the statutory
requirements that apply to moderate and serious PM2.5
nonattainment areas (NAAs) under subparts 1 and 4.
The CAA requirements of subpart 1 for attainment plans include: (i)
The section 172(c)(1) requirements for reasonably available control
measures (RACM), reasonably available control technology (RACT) and
attainment demonstrations; (ii) the section 172(c)(2) requirement to
demonstrate reasonable further progress (RFP); (iii) the section
172(c)(3) requirement for emissions inventories; (iv) the section
172(c)(5) requirements for a nonattainment new source review (NSR)
permitting program; and (v) the section 172(c)(9) requirement for
contingency measures.
The CAA subpart 4 requirements for moderate areas are generally
comparable with the subpart 1 requirements and include: (i) The section
189(a)(1)(A) NSR permit program requirements; (ii) the section
189(a)(1)(B) requirements for attainment demonstration; (iii) the
section 189(a)(1)(C) requirements for RACM; and (iv) the section 189(c)
requirements for RFP and quantitative milestones. In addition, under
subpart 4 the moderate area attainment date is as expeditiously as
practicable but no later than the end of the 6th calendar year after
designation.
II. Content of 2012 SIP Submission and the EPA's Evaluation
The LRAPA, in coordination with ODEQ, developed the 2012 SIP
submission for the Oakridge NAA that was subsequently adopted by the
State and submitted by the ODEQ to the EPA. The following describes the
relevant contents of the 2012 SIP submission, the 2016 SIP withdrawal,
and the EPA's
[[Page 49594]]
evaluation of the remaining SIP provisions.
The 2012 SIP submission included provisions that address the
requirements of an attainment plan for a moderate PM2.5
nonattainment area including RACT/RACM, emissions inventories,
modeling, attainment demonstration, transportation conformity and motor
vehicle emissions budgets, RFP and contingency measures.
The 2016 SIP withdrawal included the State's withdrawal of the
following 2012 SIP submission provisions:
OAR 340-200-0040--General Air Pollution Procedures and
Definitions; the adopted and amended version of the rules and Redline/
strikeout version of the adopted and amended rules.
The LRAPA's Title 29--Designation of Air Quality Areas;
the adopted and amended version of the rules and redline/strikeout
version of the adopted and amended rules except:
[cir] 29-0010(10)--Oakridge PM2.5 Nonattainment Area
definition
[cir] 29-0030 Designation of Nonattainment Areas
Title 38--Major New Source Review
Smoke Management Directive
The state withdrew OAR-340-200-0040, portions of the LRAPA Title
29, Title 38 and the Smoke Management Directive because they were not
intended to be included in the SIP submission.
State Nonattainment Area Description and Designation
The 2012 SIP submission contained revised portions of the LRAPA
Title 29, ``Designation of Air Quality Areas'' (29-0010(10) and 29-
0030) adopted on October 18, 2012 that identify and describe the
Oakridge PM2.5 area and lists the Oakridge PM2.5
area as nonattainment. The area described as the Oakridge
PM2.5 nonattainment area in the LRAPA Title 29 is consistent
with the federal nonattainment area designated at 40 CFR 81.338. We
propose to approve the State's area description and listing as
nonattainment.
Emissions Inventory
Section 172(c)(3) of the CAA requires the development of emissions
inventories for nonattainment areas. In addition, the planning and
associated modeling requirements set forth in CAA section 189(a) make
the development of an accurate and up-to-date emissions inventory a
critical element of any viable attainment plan. EPA guidance specifies
the best practices for developing emission inventories for
PM2.5 nonattainment areas (see ``Emissions Inventory
Guidance for Implementation of Ozone and Particulate Matter National
Ambient Air Quality Standards (NAAQS) and Regional Haze Regulations'').
The 2012 SIP submission contains planning inventories of emission
sources and emission rates for the base year of 2008 and the projected
attainment year of 2014. The LRAPA chose the year 2008 as the base year
because it is one of the three years used to designate the area as
nonattainment as well as the middle year of the five year period, 2006-
2010, used for the determining the base year design value.
Additionally, the LRAPA determined that high-quality emission
information was already available from the National Emission Inventory
for 2008. The LRAPA developed the base year emissions inventory for the
nonattainment area. Table 1 provides information on the worst case
winter season day, most relevant to attainment planning, as well as the
typical winter season day. Annual emissions for primary
PM2.5, NOX, SO2, VOC, and
NH3 can be found in the docket in the LRAPA's SIP
submission. The LRAPA determined the precursor emissions for a typical
winter day accounted for less than 6 percent of the total PM. The 2012
SIP submission listed total emissions of direct PM2.5 on a
typical winter day at 525 pounds per day (lbs/day). The source
categories contributing to the typical winter day total were identified
as follows: Area sources, primarily RWC, emit 479 pounds per day (lbs/
day); mobile sources, including railroads and re-entrained road dust
emit 44.7 lbs/day; and permitted stationary sources emit 0.5 lbs/day.
Table 1--2008 Oakridge; Typical Season Day and Worst-Case Day PM2.5
Emissions
[lbs/day]
------------------------------------------------------------------------
PM2.5 lbs/per day
-------------------------------
Source sector Typical season
day Worst case day
------------------------------------------------------------------------
Permitted Point......................... 0.5 0.9
Stationary Area......................... 479.5 480
Onroad.................................. 38.7 65.1
Nonroad................................. 6.0 6.0
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Total............................... 525 552
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The EPA has reviewed the base year emission inventory and believes
it satisfies the CAA section 172(c)(3) requirement for a comprehensive,
accurate and current inventory of actual 2008 emissions of the relevant
pollutants in the Oakridge NAA. Thus, the EPA proposes to approve the
base year emission inventory in the 2012 SIP submittal.
2014 Projected Attainment Inventory for the Nonattainment Area
The 2012 SIP submittal included a projected 2014 attainment year
emissions inventory that supported attainment by December 2014. The
2014 attainment year emissions inventory included the same source
categories as the 2008 base year. Emissions in the 2014 attainment year
inventory were adjusted to account for emissions increases due to
anticipated growth between 2008 and 2014 and emissions decreases from
implementation of the control strategies identified in the RACM
analysis.
Due to the fact that the Oakridge NAA failed to attain the
PM2.5 NAAQS by the December 31, 2014 attainment date
projected in the 2012 SIP submission, the EPA presumes that the
attainment year emission inventory was not accurate. The quality-
assured and certified ambient air monitoring data from the Willamette
Activity Center monitoring site from 2012 through 2014, yields a design
value of 40 [micro]g/m\3\ and confirms that the area did not attain the
2006 24-hour PM2.5 NAAQS by December 31, 2014. Thus, the EPA
proposes to disapprove the projected 2014 attainment year inventory in
the 2012 SIP submission.
[[Page 49595]]
Federal Requirement for RACM, Including RACT
The general SIP planning requirements for nonattainment areas under
subpart 1 include section 172(c)(1), which requires implementation of
all RACM (including RACT). The language of section 172(c) requires that
attainment plans provide for the implementation of RACM (including
RACT) to provide for attainment of the NAAQS. Therefore, what
constitutes RACM and RACT is related to what is necessary for
attainment in a given area.
Subpart 4 also requires states to develop attainment plans that
evaluate potential control measures and impose RACM and RACT on sources
within a moderate nonattainment area that are necessary to
expeditiously attain the NAAQS. Section 189(a)(1)(C) requires that
moderate nonattainment plans provide for implementation of RACM and
RACT no later than four years after the area is designated as
nonattainment. As with subpart 1, the terms RACM and RACT are not
defined within subpart 4. Nor do the provisions of subpart 4 specify
how states are to meet the RACM and RACT requirements. However, the
EPA's longstanding guidance in the General Preamble provides
recommendations for determining which control measures constitute RACM
and RACT for purposes of meeting the statutory requirements of subpart
4. 57 FR 13540-41.
For both RACM and RACT, the EPA notes that an overarching principle
is that if a given control measure is not needed to attain the relevant
NAAQS in a given area as expeditiously as practicable, then that
control measure would not be required as RACM or RACT because it would
not be reasonable to impose controls that are not in fact needed for
attainment purposes. Accordingly, a RACM and RACT analysis is a process
to identify emissions sources, evaluate potential emissions controls,
and impose those control measures and technologies that are reasonable
and necessary to bring the area into attainment as expeditiously as
practicable, but by no later than the applicable attainment date for
the area. However, the EPA has long-applied a policy that states
evaluate the combined effect of reasonably available control measures
that were not necessary to demonstrate attainment by the statutory
attainment, and if they collectively advance the attainment date by at
least one-year the measures should be adopted to satisfy the statutory
requirement that attainment be as expeditious as practicable (80 FR
15369).
Identification of RACM and RACT
The LRAPA provided a RACM and RACT analysis in Appendix J of the
2012 SIP submission. The submission explained that residential wood
combustion (RWC) sources (e.g., woodstoves, fireplaces, pellet stoves)
account for 86% of emissions on worst-case winter days when exceedance
of the NAAQS is most likely to occur. The other contributing sources
were identified as road dust (5%), transportation (7.9%) and industrial
and other unidentified area sources (1.1%). The LRAPA also conducted a
speciation analysis, included in Appendix E of the 2012 SIP submission,
which demonstrated that 96% of total particulate matter is from organic
and elemental carbon, with significantly smaller amounts of secondary
inorganic aerosols including nitrate (0.4%), sulfate (1%) and ammonium
(.03%). Based on these and other analyses, the LRAPA concluded that RWC
was the major contributor to PM2.5 concentrations on worst-
case winter days and focused its RACM analysis on this source category.
Emissions from RWC for winter home heating has been a long-standing
air pollution problem for the Oakridge NAA, first identified when EPA
designated the area nonattainment for the PM10 NAAQS. The
Oakridge nonattainment area PM10 SIP adopted a control
strategy that specifically addressed emissions from RWC (64 FR 12751).
In the 2012 SIP submission for the 2006 PM2.5 NAAQS, the
LRAPA likewise focused on RWC emissions and described a suite of
control measures that included measures in effect from the previous
approved PM10 attainment plan as well as new measures
specifically intended to address PM2.5. While the LRAPA
described several control measures in the 2012 PM2.5 SIP
submission, it only relied on emission reductions from measures
implemented after the base year of 2008. These measures are:
RWC curtailment during adverse meteorological conditions
and air quality advisories are issued: Oakridge City ordinance 889;
Motor vehicle emission reductions due to federal emissions
requirements; and,
Woodstove change outs of uncertified stoves to EPA
certified stoves since 2008.
In its RACT analysis, the LRAPA identified two industrial
stationary sources in the nonattainment area, a rock crusher and ready-
mix concrete plant, which are described as minor sources of direct and
precursor emissions for purposes of PM2.5. The LRAPA asserts
that these two small sources together emit less than one ton per year
of PM2.5 emissions and contribute less than 1% to the 2008
base year emission inventory. The EPA National Emission Inventory data
for the Oakridge NAA as presented in Appendix D of the 2012 SIP
submission (attachment 3.3d, pages 207-210) identified precursor
emissions for the base year of 2008. That data show there are no
precursor emissions from industrial sources in the Oakridge NAA.
In the 2012 SIP submission, the LRAPA reviewed the two stationary
sources and determined that the air pollution control technology
installed on these sources are the current standard for the industry.
The rock crusher controls emissions of PM2.5 using water
spray. The concrete batch plant uses baghouse controls to reduce
PM2.5 emissions. The SIP submission did not propose or
contain any additional control technologies for purposes of meeting
RACT based on the existing particulate matter control measures and the
minimal contribution to PM2.5 concentrations from the two
small stationary sources. Operating permits for these two sources were
not included in the 2012 SIP submission.
The EPA's Evaluation of RACM Including RACT
The measures selected and implemented by the LRAPA to meet RACM
including RACT requirements did not provide for attainment of the
PM2.5 NAAQS by the attainment date in the 2012 SIP
submission of December 31, 2014. In addition, the RWC curtailment
program included in the 2012 SIP submission, identified as Oakridge
City Ordinance 889, was rescinded and is no longer in effect. A new
replacement ordinance, Oakridge City Ordinance 914 has not yet been
submitted to EPA for incorporation into the SIP. Based on the
foregoing, the suite of control measures in the 2012 SIP submission do
not represent RACM and RACT and fail to meet the requirements of
section 172(c)(1) and section 189(a)(1)(C) of the CAA. Accordingly, we
are proposing to disapprove the RACM and RACT provisions of the 2012
SIP submission.
Attainment Demonstration and Modeling
Section 189(a)(1)(B) requires that a PM2.5 moderate area
SIP contain either a demonstration that the plan will provide for
attainment by the applicable attainment date, or a demonstration that
attainment by such date is
[[Page 49596]]
impracticable. In the attainment demonstration of the 2012 SIP
submission, the LRAPA described how the attainment plan would provide
the emissions reductions needed to bring the Oakridge NAA into
attainment with the 2006 24-hour PM2.5 NAAQS no later than
December 31, 2014.
All attainment demonstrations must project air quality below the
standard using air quality modeling. The ODEQ submitted a modeled
demonstration that is consistent with the recommendations contained in
the EPA's modeling guidance document ``Guidance on the Use of Models
and Other Analyses for Demonstrating Attainment of Air Quality Goals
for Ozone, PM2.5, and Regional Haze'' (EPA-454/B-07-002,
April 2007) and the June 28, 2011, memorandum from Tyler Fox to
Regional Air Program Managers, ``Update to the 24-hour PM2.5
Modeled Attainment Test.'' States should base modeling on national
(e.g., EPA), regional (e.g., Western Regional Air Partnership) or local
modeling, or a combination thereof, if appropriate. The April 2007
guidance indicates that states should review supplemental analyses, in
combination with the modeling analysis, in a ``weight of evidence''
assessment to determine whether each area is likely to achieve timely
attainment.
The LRAPA used a proportional ``roll-forward'' model to project air
quality levels into the future. The linear model the LRAPA used for the
Oakridge NAA considered the concentrations of individual chemical
species analyzed from the PM2.5 filters. The model does not
account for secondary chemistry because inert species comprise more
than 97% of the total PM2.5 in the Oakridge NAA. The EPA
believes that the roll-forward model is an appropriate approach for the
Oakridge NAA due to the limited number of emission sources and source
categories, the limited contribution of secondary aerosol, and the even
dispersal of emission sources across the area. The LRAPA determined the
emission changes of each species from the base year to a future
attainment year based on emissions growth or emissions reduction from
trends in technology and population, and considering both national
control measures (such as Tier 2 gasoline vehicle standards), and
control measures included as part of the SIP submission. These emission
changes and resulting changes in ambient chemical species levels were
summed to estimate future year projected PM2.5
concentrations.
The attainment demonstration starts with estimating the baseline
design value for PM2.5. The procedure for its calculation is
presented in Appendix N to 40 CFR 50, ``Interpretation of the National
Ambient Air Quality Standards for Particulate Matter,'' EPA Guidance on
the Use of Models and Other Analyses for Demonstrating Attainment of
Air Quality Goals for O3, PM2.5, and Regional Haze,'' and
the June 28, 2011, memorandum from Tyler Fox to Regional Air Program
Managers, ``Update to the 24-hour PM2.5 Modeled Attainment
Test.'' Ambient PM2.5 concentrations from 2006 to 2010 were
used to calculate a baseline design value of 39.5 [micro]g/m\3\.
Detailed methods on the baseline design value calculation are in
Appendix G of the 2012 SIP submission.
Quality-assured and certified ambient air monitoring data from the
Willamette Activity Center monitoring site from 2012 through 2014,
yields a design value of 40 [micro]g/m\3\ and confirms that the area
did not attain the 2006 24-hour PM2.5 NAAQS by December 31,
2014. Therefore, EPA is proposing to disapprove the attainment
demonstration portion of the 2012 SIP submission because the area
failed to attain by the projected attainment date.
Reasonable Further Progress and Quantitative Milestones
For PM2.5 nonattainment areas, two statutory provisions
apply regarding RFP and quantitative milestones. First, under subpart
1, CAA section 172(c)(2) requires attainment plans to provide for RFP,
which is defined in CAA section 171(l) as ``such annual incremental
reductions in emissions of the relevant air pollutant as are required
by [Part D of Title I] or may reasonably be required by the
Administrator for the purpose of ensuring attainment of the applicable
national ambient air quality standard by the applicable date.''
Reasonable further progress is a requirement to assure that states make
steady, incremental progress toward attaining air quality standards,
rather than deferring implementation of control measures and thereby
emission reductions until before the date by which the standard is to
be attained. Second, CAA section 189(c) requires that attainment plans
for the PM2.5 NAAQS to include ``quantitative milestones
which are to be achieved every 3 years until the area is redesignated
to attainment and which demonstrate reasonable further progress . . .
toward attainment by the applicable date.''
In the 2012 SIP submission, the LRAPA did not address RFP and
quantitative milestone requirements. The 2012 SIP submission projected
attainment of the 2006 PM2.5 NAAQS within five years of
designation, or by December 31, 2014. However, the Oakridge NAA failed
to attain by December 31, 2014. The attainment plan control measures
therefore did not achieve the necessary emission reductions that would
have been necessary to demonstrate RFP or meet quantitative milestones,
assuming such requirements were addressed in the 2012 SIP submittal.
Accordingly, the EPA is proposing to disapprove the RFP and
quantitative milestones elements for the 2012 SIP submission.
Contingency Measures
Section 172(c)(9) of the CAA requires that an attainment plan
provide for implementation of specific contingency measures in the
event that an area fails to attain a standard by its applicable
attainment date, or fails to meet RFP. These measures should consist of
other available control measures not included in the control strategy
and must be fully adopted rules or measures that take effect without
any further action by the state or the EPA. Contingency measures should
also contain trigger mechanisms and an implementation schedule, and
should provide for emission reductions equivalent to one year's worth
of RFP (57 FR 13498).
While the LRAPA discussed contingency measures in the 2012 SIP
submission, the ordinance enacting the contingency measures was not
included in the SIP submission. Because the regulatory text of the
contingency measures was not included in the 2012 SIP submission, the
EPA is proposing to disapprove the 2012 SIP submission with respect to
the contingency measure requirements of the CAA.
Motor Vehicle Emissions Budget
Section 176(c) of the CAA requires federal actions in nonattainment
and maintenance areas to ``conform to'' the goals of SIPs. This means
that such actions will not cause or contribute to violations of a
NAAQS, worsen the severity of an existing violation, or delay timely
attainment of any NAAQS or any interim milestone. Actions involving
Federal Highway Administration (FHWA) or Federal Transit Administration
(FTA) funding or approval are subject to the transportation conformity
rule (40 CFR part 93, subpart A). Under this rule, metropolitan
planning organizations (MPOs) in nonattainment and maintenance areas
coordinate with state air quality and transportation agencies, the EPA,
and the FHWA and the FTA to demonstrate that their long-range
transportation plans and transportation improvement programs (TIPs)
conform to applicable SIPs. This demonstration
[[Page 49597]]
is typically determined by showing that estimated emissions from
existing and planned highway and transit systems are less than or equal
to the motor vehicle emissions budgets (budgets) contained in a SIP.
For budgets to be approvable, they must meet, at a minimum, the
EPA's adequacy criteria (40 CFR 93.118(e)(4)). One of the adequacy
criteria requires that motor vehicle emissions budgets when considered
together with all other emissions sources, are consistent with the
applicable requirements for reasonable further progress, attainment or
maintenance (40 CFR 93.118(e)(4)(iv)). In this case the applicable
requirement is attainment of the 2006 24-hour PM2.5 NAAQS.
The Oakridge NAA failed to attain the 2006 24-hour PM2.5
NAAQS by December 31, 2014, and the submitted motor vehicle emissions
budgets therefore do not meet the aforementioned adequacy criterion.
Accordingly, EPA is proposing to disapprove the submitted budgets.
III. Consequences of a Disapproved SIP
This section explains the consequences of a disapproval of a SIP
under the CAA. The Act provides for the imposition of sanctions and the
promulgation of a federal implementation plan (FIP) if a state fails to
submit and the EPA approve a plan revision that corrects the
deficiencies identified by the EPA in its disapproval.
The Act's Provisions for Sanctions
If the EPA finalizes disapproval of a required SIP submission, such
as an attainment plan submission, or a portion thereof, CAA section
179(a) provides for the imposition of sanctions unless the deficiency
is corrected within 18 months of the final rulemaking of disapproval.
The first sanction would apply 18 months after the EPA disapproves the
SIP submission, or portion therefore. Under EPA's sanctions
regulations, 40 CFR 52.31, the first sanction imposed would be 2:1
offsets for sources subject to the new source review requirements under
section 173 of the Act. If the state has still failed to submit a SIP
submission to correct the identified deficiencies for which the EPA
proposes full or conditional approval 6 months after the first sanction
is imposed, the second sanction will apply. The second sanction is a
prohibition on the approval or funding certain highway projects.\1\
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\1\ On April 1, 1996 the US Department of Transportation
published a notice in the Federal Register describing the criteria
to be used to determine which highway projects can be funded or
approved during the time that the highway sanction is imposed in an
area. (See 61 FR 14363).
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Federal Implementation Plan Provisions That Apply if a State Fails To
Submit an Approvable Plan
In addition to sanctions, if the EPA finds that a state failed to
submit the required SIP revision or finalizes disapproval of the
required SIP revision, or a portion thereof, the EPA must promulgate a
FIP no later than 2 years from the date of the finding if the
deficiency has not been corrected within that time period.
Ramifications Regarding Conformity
One consequence if EPA finalizes disapproval of a control strategy
SIP submission is a conformity freeze.\2\ If we finalize the
disapproval of the attainment demonstration SIP without a protective
finding, a conformity freeze will be in place as of the effective date
of the disapproval (40 CFR 93.120(a)(2)).\3\ The Oakridge NAA is an
isolated rural area as defined in the transportation conformity rule
(40 CFR 93.101). As such it does not have a metropolitan planning
organization (MPO), and there is no long range transportation plan or
TIP that would be subject to a freeze. However the freeze does mean
that no projects in the Oakridge NAA may be found to conform until
another attainment demonstration SIP is submitted and the motor vehicle
emissions budgets are found adequate or the attainment demonstration is
approved.
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\2\ Control strategy SIP revisions as defined in the
transportation conformity include reasonable further progress plans
and attainment demonstrations (40 CFR 93.101).
\3\ EPA would give a protective finding if the submitted control
strategy SIP contains adopted control measures or written
commitments to adopt enforceable control measures that fully satisfy
the emissions reductions requirements relevant to the statutory
provision for which the implementation plan revision was submitted,
such as reasonable further progress or attainment (40 CFR 93.101 and
93.120(a)(2) and (3)). The submitted attainment plan for the
Oakridge NAA does not contain all necessary controls to attain the
2006 24-hour PM2.5 NAAQS and therefore is not eligible
for a protective finding.
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IV. The EPA's Proposed Action
Proposed Approval
We propose to approve the following elements of the 2012 SIP
submission:
Description of the Oakridge NAA and listing as
nonattainment, and
The base year 2008 emission inventory to meet the section
172(c)(3) requirement for emissions inventories.
Proposed Disapproval
We propose to disapprove the following elements of the 2012 SIP
submission:
The attainment year emission inventory to meet the section
172(c)(3) requirement for emissions inventories,
the section 172(c)(1) requirement for reasonably available
control measures (RACM), including reasonably available control
technology (RACT),
the section 189(a)(1)(B) requirement for an attainment
demonstration,
Transportation conformity and MVEB,
Section 172(c)(2) and section 189(c) requirements for RFP
and quantitative milestones, and
Section 172(c)(9) requirement for contingency measures.
V. Statutory and Executive Order Reviews
Under the CAA, 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 CAA. Accordingly, this
proposed action merely approves state law as meeting Federal
requirements and does not impose additional requirements beyond those
imposed by state law. For that reason, this action:
Is not a ``significant regulatory action'' subject to
review by the Office of Management and Budget under Executive Order
12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21,
2011);
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
[[Page 49598]]
be inconsistent with the Clean Air Act; and
does not provide the EPA with the discretionary authority
to address, as appropriate, disproportionate human health or
environmental effects, using practicable and legally permissible
methods, under Executive Order 12898 (59 FR 7629, February 16, 1994).
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).
List of Subjects in 40 CFR Part 52
Environmental protection, Air pollution control, Incorporation by
reference, Nitrogen dioxide, Ozone, Particulate matter, Reporting and
recordkeeping requirements, Sulfur oxides, Volatile organic compounds.
Dated: July 18, 2016.
Michelle L. Pirzadeh,
Acting Regional Administrator, Region 10.
[FR Doc. 2016-17714 Filed 7-27-16; 8:45 am]
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