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Acronyms and Chemical Notations
1
Introduction
1.1
What data are included in the 2020 NEI release?
1.2
What is included in this documentation?
1.3
Where can I obtain the 2020 NEI data?
1.4
Why is the NEI created?
1.5
How is the NEI created?
1.6
Who are the target audiences for the 2020 NEI?
1.7
What are appropriate uses of the 2020 NEI and what are the caveats about the data?
2
2020 NEI contents overview
2.1
What are EIS sectors?
2.2
How is the NEI constructed?
2.3
What are the sources of data in the 2020 NEI?
2.4
What are the top sources of some key pollutants?
2.5
How does this NEI compare to past inventories?
3
Nonroad Mobile
3.1
Sector Description
3.2
Computing Nonroad emissions using MOVES
3.3
Additional Data: Nonroad County Databases (CDBs)
3.4
MOVES runs and Postprocessing Steps
3.5
Use of California Submitted Emissions
3.6
References
4
Onroad Mobile - All Vehicles and Refueling
4.1
Sector Description
4.2
Overview of Input Data Sources for 2023
4.3
Sources of Data and selection heirarchy
4.4
California-submitted onroad emissions
4.5
Agency-submitted MOVES inputs
4.6
Calculation of Emissions
4.7
Summary of quality assurance methods
4.8
Supporting data
4.9
References for onroad mobile
5
Vegetation and Soils (BEIS) Emissions: CO, NO, and VOC
5.1
EPA-developed emissions
5.2
References
6
Agricultural and Non-agricultural Lands (STAGE) Emissions: NH3
6.1
Sector Descriptions and Overview
6.2
EPA-developed estimates
6.3
EPA-developed Non-agricultural Land NH3 Emissions
6.4
NH3 Emission Summaries and Analysis
6.5
Improvements/Changes to 2023 NEI
6.6
References
7
Commercial Marine Vessels
7.1
Sector Descriptions and Overview
7.2
Sources of data
7.3
EPA-developed estimates
8
Locomotives
8.1
Sector Descriptions and Overview
8.2
Sources of data
8.3
EPA-developed estimates
9
Oil and Gas Exploration and Production
9.1
Sector Descriptions and Overview
9.2
Sources of data
9.3
EPA-developed estimates
9.4
References
10
Portable Fuel Containers
10.1
Sector Descriptions and Overview
10.2
EPA-developed estimates
10.3
References
11
Motor Vehicle and Structure Fires
11.1
Sector Description and Overview
11.2
EPA-developed estimates
11.3
References
12
Nonpoint Non-Combustion Mercury
12.1
Sector Descriptions and Overview
12.2
EPA-developed estimates
12.3
References
13
Nonpoint Gasoline Distribution
13.1
Sector Descriptions and Overview
13.2
Sources of data
13.3
EPA-developed estimates
13.4
References
14
Agricultural Silage
14.1
Sector Descriptions and Overview
14.2
EPA-developed estimates
14.3
References
15
Agriculture - Crops and Livestock Dust
15.1
Sector Descriptions and Overview
15.2
EPA-developed estimates
15.3
References
16
Dust: Residential Construction
16.1
Sector Descriptions and Overview
16.2
EPA-developed estimates
16.3
References
17
Dust - Paved and Unpaved Roads {#road dust}
17.1
Sector Descriptions and Overview
17.2
EPA-developed estimates
17.3
References
18
Mining and Quarrying
18.1
Sector Descriptions and Overview
18.2
EPA-developed estimates
18.3
References
19
Commercial and Residential Cooking
19.1
Sector Descriptions and Overview
19.2
EPA-developed estimates
19.3
References
20
Fuel Combustion – Residential Heating – Natural Gas, Oil, and Other
20.1
Sector Descriptions and Overview
20.2
EPA-Developed Estimates
20.3
References
21
Campfires
21.1
Sector Descriptions and Overview
21.2
EPA-developed estimates
21.3
References
22
Human and Animal Cremation
22.1
Sector Descriptions and Overview
22.2
EPA-developed estimates
22.3
References
23
Asphalt Paving and Roofing Asphalt
23.1
Sector Descriptions and Overview
23.2
EPA-developed estimates
23.3
References
24
Solvents
24.1
Sector Descriptions and Overview
24.2
EPA-developed estimates
24.3
References
25
Compost
25.1
Sector Descriptions and Overview
25.2
EPA-developed estimates
25.3
References
26
Waste Disposal - Open Burning – Land Clearing Debris
26.1
Sector Descriptions and Overview
26.2
EPA-developed estimates
26.3
References
27
Open Burning - Residential Household Waste
27.1
Sector Descriptions and Overview
27.2
EPA-developed estimates
27.3
References
28
Open Burning - Yard Waste
28.1
Sector Descriptions and Overview
28.2
EPA-developed estimates
28.3
References
29
Waste Disposal - Publicly-Owned Treatment Works
29.1
Sector Descriptions and Overview
29.2
EPA-developed estimates
29.3
References
30
Other NH3 Sources
30.1
Sector Descriptions and Overview
30.2
EPA-developed estimates
30.3
References
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Section 4
Onroad Mobile - All Vehicles and Refueling