Western U.S. regional analysis - emissions inventories for Regional Haze planning
Overview
For western U.S. regional analysis using photochemical modeling for Regional Haze, WESTAR-WRAP is assisting state air agencies in their review of the 2014v2 NEI. The process will allow participants to review and provide updates to these inventories . Feedback and revisions to the inventories may be incorporated into air quality modeling by the WRAP for regional photochemical modeling.Meetings
June 28, 2018 Workgroup Call 1
July 26, 2018 Workgroup Call 2
Agenda- Recent updates from state NEI review
- Road Dust review needed (2011 vs 2014; border discontinuities)
- Point source stack parameter review (in progress)
- Minor-source inclusion needs (with nonpoint subtraction?)
- Recommendations for source-apportionment categories?
Materials
Process
The initial review step for EPA's 2014v2 NEI following a three phase process is described in this May 22, 2018 memo. The initial review aspects listed in the memo can be evaluated using 3 data review options below. Option 1 is a high level review will look at tabular state and county inventories for key pollutants. Option 2 will enable a more detailed review to examine additional inventory parameters, such as individual point sources. Option 3 will allow review of a map-based emissions inventory review tool provided by the IWDW. Additional description and materials for the review process are provided below. Subsequent memoranda for additional review of 2014NEIv2 and other base and projection inventories will be added over time.Option 1
Sector summary spreadsheet and charting tool. State and county level emissions totals for pollutants CO, NH3, NOx, PM10, PM2.5 and SO2.
2014v2_allsector_summary_WRAP_crosstab.xlsx (provided by Farren Herron-Thorpe, Washington State Dept. of Ecology)
Modified version of the above spreadsheet that includes state/tribal summaries and calculations of anthropogenic totals and 80% threshold. (see the "Readme" tab)
FHT2014NEIv2_summary.xlsx (provided by Roslyn Higgin, NMENV)
Facility emissions summaries from 2014 NEI v2. Excel spreadsheet with a list of all the facilities in each state, broken down by EI Sector, so that comparisons can be made to the sector summary if desired. There is also a sheet that lists all the facilities with a “Q” greater than 1 Ton.
WRAP_Facility_CAPs_Summary.xlsx (provided by Farren Herron-Thorpe)
Option 2
Data for individual point sources for 16 pollutants from EPA's 2014v2 modeling platform. The point data are for non-fire inputs (e.g. pt_oilgas, ptegu, ptnonipm, and cmv_c3 for California, Oregon and Washington). The Excel spreadsheets contain parameters such as annual emissions, facility name and ID, and stack parameters where applicable.
- Alaska (7Mb)
- Arizona (3Mb)
- California (150Mb csv file)
- Colorado (8Mb)
- Hawaii (1Mb)
- Idaho (2Mb)
- MT Dakotas (2Mb)
- Nevada (6Mb)
- New Mexico (2Mb)
- Oregon (3Mb)
- Tribes (0.5Mb)
- Utah (3Mb)
- Washington (4Mb)
- Wyoming (4Mb)
Option 3
Map-based emissions review tool on the IWDW (addition of 2014 NEIv2 and augmented inventories for regional haze modeling are pending)
Comment Memos from Reviewing Agencies
Comment memos from reviewing agencies are posted below by inventory reviewed. States may need to coordinate with tribes and local air agencies for review completeness. There may be multiple comment memos from an agency for the same inventory. These comments will be addressed in the processing of the inventories for regional haze modeling.
Note from Farren Herron-Thorpe regarding interpretation of the summary data spreadsheets under Phase 1, above:
For example, if you look at the emissions totals for “Industrial Processes – Petroleum Refineries”, it will be less than the total facility emissions for all petroleum refineries. All boiler emissions are added into the “Fuel Combustion – Industrial Boilers, xxxxx” category, even if they are at a refinery facility.
If you would like to see how your facilities have been split up amongst the sector summary categories, I can send you out a table for your state.
Reviewing Agency | 2014NEIv2 Inventory | Comments | Attachments | Date |
---|---|---|---|---|
Alaska | Airport, marine, dust, wildfires, O&G | See attachment | Alaska comments | 7/25/2018 |
Arizona | All sectors | No substitutions needed | 6/27/2018 | |
Albuquerque | All sectors | No need for any changes | 5/17/2018 | |
California | Mobile Sources | Email thread regarding use of CA's EMFAC vs. EPA's MOVES model for mobile source emissions | CARB Comments | 5/1/2018 |
" | Facility point sources | Correction data file for point source emissions from 13 facilities | Facilities correction data file, Facilities correction memo | 7/18/18 |
" | Nonpoint, Nonroad | see attachment | CARB Comments Huth | 7/20/2018 |
Colorado | All sectors | Sectors appear consistent with [Colorado] data | Colorado Comments | 5/16/2018 |
Hawaii | See comments and data attachments | See attached comments | Hawaii comments; Hawaii Comparison of Phase 1 spreadsheet to HI SLEIS; HI Data Pt Src review | 6/13/2018 |
Idaho | Residential wood combustion | Updates to 2014v2 RWC inventories for Idaho | Idaho Comments; 2014 NEIv2 RWC Corrected | 5/30/2018 |
Montana | All sectors | No changes to 2014 NEI; potential issues with O&G inventories in Big Horn Basin (review pending) | Montana Comments | 6/14/2018 |
Nevada | All sectors, emphasis on major point sources | No changes at this time; Washoe County indicated their MOVES inputs were not included | Nevada comments | 6/20/2018 |
New Mexico | All sectors | EPA’s change in methodology from 2011 to 2014 reduced road dust emissions by 50%. In 2014, VMT was obtained from a MOVES run instead of an NMIM run, and separated into paved and unpaved values based on census-region level ratios. | 7/19/2018 | |
North Dakota | Point sources and other sectors | Inventories look reasonable | North Dakota Comments | 5/30/2018 |
Oregon | nonpoint nonroad onroad | See attached | Oregon Comments | 7/25/2018 |
South Dakota | All sectors | No changes | 6/28/2018 | |
Utah | ||||
Washington | Construction Dust | EPA's emissions calculation methodology for construction dust is over-generalized for Washington state | Washington Comments WA_2014_ConstructionDust_EI_Revisions.xlsx | 4/24/2018 |
" | Fireplace emissions | Updated fireplace emissions for four counties in the Puget Sound area | WA_2014_Fireplace_EI_Revisions.xlsx WA_2014_Fireplace_EI_Revisions.docx | 6/27/2018 |
Wyoming | Unpaved road; point sources | Raised concerns for Unpaved Road Emission; recommendations for representativeness of point source emissions | Wyoming Comments | 6/14/2018 |
" | Facilities emissions not in NEI | See attached | 50 Buttes and House Creek Emissions | 7/6/2014 |
Resources
- Now available! *2014 National Emissions Inventory (NEI) Report* This new highly visual and interactive Report shows graphs, tables, and maps that summarize national and state emission trends and emission profiles for states and counties based on the 2014 NEI v2 data. With this tool, users can explore the emissions data and answer basic questions they have about the NEI and emission trends by looking at what the data shows for national, state, and local areas. The Report distills a considerable amount of data detail inherent to the NEI and provides emission summaries for the criteria pollutants, black carbon, and 5 select HAPs. It is not a query tool for accessing all details of the entire 2014 NEI data. NEI data access query tools and detailed data files remain available on the EPA NEI program website. Please explore the 2014 NEI Report and bookmark it on https://gispub.epa.gov/neireport/2014/. The Report is also posted on the NEI program website https://www.epa.gov/air-emissions-inventories.
- The 2014v2 NEI Technical Support Document is posted on the 2014. NEI website
- SCC to emissions sector mapping table SCC Codes (Obtained from EPA's SCC download site, July 1, 2018)
Future 2016 Modeling Platform Review
- Corrections to 2016 alpha nonroad emissions (May 31, 2018) (see 2016fd_inputs_nonroad_corrected.zip) ftp://newftp.epa.gov/Air/emismod/2016/alpha/2016fd/emissions/