Federal Register - September 24, 2021
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Source: Federal Register
Federal Register / Vol. 86, No. 183 / Friday, September 24, 2021 / Proposed Rules hour PM2.5 NAAQS, i.e., the 2013 base year inventory, forecasted inventories for the RFP milestone years of 2017, 2020 attainment year, and 2023 postattainment milestone year, and additional forecasted emissions inventories for 2018 and 2019 to support the five percent annual emissions reduction demonstration as required by CAA section 189d. Each inventory includes emissions from stationary, area, on-road, and non-road sources.
CARB developed the base year inventories for stationary sources using actual emissions reports from facility operators. The State developed the base year emissions inventory for area sources using the most recent models and methodologies available at the time the State was developing the Plan.78 The Plan also includes background, methodology, and inventories of condensable and filterable PM2.5
emissions from stationary point and non-point combustion sources that are expected to generate condensable PM2.5.79 CARB used EMFAC2014 to estimate on-road motor vehicle emissions based on transportation activity data from the 2014 Regional Transportation Plan 2014 RTP adopted by the transportation planning agencies in the San Joaquin Valley.80 Reentrained paved road dust emissions were calculated using a CARB
methodology consistent with the EPAs AP42 road dust methodology.81
CARB developed the emissions forecasts by applying growth and control profiles to the base year inventory. CARBs mobile source emissions projections take into account predicted activity rates and vehicle fleet turnover by vehicle model year and adopted controls.82 In addition, the Plan states that the District is providing for use of pre-base year ERCs as offsets by
53157
accounting for such ERCs in the projected 2025 emissions inventory.83
The 2018 PM2.5 Plan identifies growth factors, control factors, and estimated offset use between 2013 and 2025 for direct PM2.5, NOX, SOX, and VOC
emissions by source category and lists all pre-base year ERCs issued by the District for PM10, NOX, SOX, and VOC
emissions, by facility.84
Table 1 provides a summary of the winter 24-hour average inventories in tons per day tpd of direct PM2.5 and PM2.5 precursors for the 2013 base year.
Table 2 provides a summary of annual average inventories of direct PM2.5 and PM2.5 precursors for the 2013 base year.
These annual average inventories provide the basis for the control measure analysis and the RFP and attainment demonstrations in the SJV
PM2.5 Plan.
TABLE 1SAN JOAQUIN VALLEY WINTER AVERAGE EMISSIONS INVENTORY FOR DIRECT PM2.5 AND PM2.5 PRECURSORS
FOR THE 2013 BASE YEAR tpd Category
Direct PM2.5
NOX
SOX
VOC
Ammonia
Stationary Sources
Area Sources
On-Road Mobile Sources
Non-Road Mobile Sources
8.5
41.4
6.4
4.4
35.0
11.5
188.7
65.3
6.9
0.5
0.6
0.3
86.6
156.8
51.1
27.4
13.9
291.5
4.4
0.0
Totals a
60.8
300.5
8.4
321.9
309.8
Source: 2018 PM2.5 Plan, Appendix B, tables B1 to B5.
a Totals reflect disaggregated emissions and may not add exactly as shown here due to rounding.
TABLE 2SAN JOAQUIN VALLEY ANNUAL AVERAGE EMISSIONS INVENTORY FOR DIRECT PM2.5 AND PM2.5 PRECURSORS
FOR THE 2013 BASE YEAR tpd Category
Direct PM2.5
NOX
SOX
VOC
Ammonia
Stationary Sources
Area Sources
On-Road Mobile Sources
Non-Road Mobile Sources
8.8
41.5
6.4
5.8
38.6
8.1
183.1
87.4
7.2
0.3
0.6
0.3
87.1
153.4
49.8
33.8
13.9
310.9
4.4
0.0
Totals a
62.5
317.2
8.5
324.1
329.2
Source: 2018 PM2.5 Plan, Appendix B, tables B1 to B5.
a Totals reflect disaggregated emissions and may not add exactly as shown here due to rounding.
3. The EPAs Review of the States Submission We have reviewed the emissions inventories in the SJV PM2.5 Plan that pertain to the 1997 24-hour PM2.5
NAAQS and the emissions inventory estimation methodologies used by California for consistency with CAA
requirements and the EPAs guidance.
We find that the inventories are based on the most current and accurate information available to the State and 78 2018 PM
2.5 Plan, Appendix B, section B.2
Emissions Inventory Summary and Methodology.
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District at the time they were developing the Plan and inventories, including the latest version of Californias mobile source emissions model that had been approved by the EPA at the time, EMFAC2014. The inventories comprehensively address all source categories in the San Joaquin Valley PM2.5 nonattainment area and are consistent with the EPAs inventory guidance.
at B42 to B44.
at B37.
81 Id. at B28.
In accordance with 40 CFR
51.1008b1, the 2013 base year is one of the three years of monitored data with which the EPA reclassified the San Joaquin Valley area to Serious.
Furthermore, in accordance with 40
CFR 51.1008c1, the 2013 base year is one of the three years of monitored data with which the EPA determined that the San Joaquin Valley area failed to attain the PM2.5 NAAQS by the applicable Serious area attainment date for the
79 Id.
82 Id.
80 Id.
83 2018
PO 00000
Frm 00009
Fmt 4701
at B18 and B19.
PM2.5 Plan, Appendix I, I1 to I5.
84 Id. at tables I1 to I5.
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