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# 2002 National Emissions Inventory Data & Documentation

Inventory Documentation

Inventory Data

Explanation of File Formats

General Inventory Information

2002 National Emission Inventory (NEI) Preparation Plan - Final August 2004 (PDF 230K) 2002 National Emission Inventory (NEI) Briefing - March 2004 (PDF 1.15M)
Inventory Documentation

Point Documentation for the Final 2002 Point Source National Emissions Inventory - July 2006 (PDF 270K) Emission Inventory Quality Assurance and Data Augmentation for Point Sources - updated July 2006 (PDF 250K) Documentation for the 2002 Electric Generating Un it (EGU) National Emissions Inventory (NEI) - September 2004 (PDF 125K)

Revision of the PM emissions from natural ga s combustion in the final version of the 2002 NEI . - August 2005 (PDF 68K)

Point Source Augmentation Support Fi les (cited in Augmentation Report)

EIS Code Look up tables Updated October 6, 2008 Mercury Speciation (ZIP 30K) Updated December 19, 2006. Profiles were updated for 2002 NEI source categories including new data for mobile sources. NEI2005 Look up tables other than those in cluded in EIS Code Look up Tables Updated April 4, 2009 Toxicity weighting factors (MDB 290K) Updated January 10, 2007. Ratios to adjust PM (XLS 37K) Stack parameter defaults (MDB 1M) NEI Pollutant Codes with Chemical Identification Standard

- Readme file (PDF 13K) NEI Pollutant Codes with Chemical Identification Standard (MDB 520K) January 2007 CAP source category crosswalk (MDB 2.7M) HAP source category crosswalk (MDB 8M) PM augmentation ratios (ZIP 90MB) - Updated June 2007 SCC emission release point crosswalk (MDB 188K) SIC/NAICS 3km ERP acceptable (MDB 130K) ZIP code tables (MDB 10M)

Nonpoint Documentation For The Final 2002 Nonpoint Sector (Feb 06 Version) National Emission Inventory Describes how EPA created emission estimates for EGUs for th e draft 2002 NEI. These estimates remain in the Final 2002 point source fi le wherever State, Local, or Tribal submittals did not re p lace them. 

## Technology Transfer Network Clearinghouse for Inventor ies & Emissions Factors htt p : // www.e p a. g ov / ttn / chief / net / 2002inventor y .html Last u p dated on Frida y, March 05

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6/28/2011 htt p ://www.e p a. g ov/ttn/chief/net/2002inventor y .htmlFor Criteria And Hazardous Air Pollutants, including Appendix A: Criteria and HAP Emissions Estimation Methodology - Final, July 2006. (PDF 2.3M) Appendix B: Electronic Appendix Containing Data Sets Used to Spatially Allocate National Activity Data and Emissions to Counties (MDB 7.5M) Appendix C: Emission Factors and County

- Level Activity Data Used to Calculate 2002 Emissions by Category (ZIP 4.4M) Appendix D: Electronic Appendix Summary of C hanges Made to State, Local, and Tribal (S/L/T) Inventory Data to Prepare the Dr aft 2002 and the Final Nonpoint Source NEI (XLS 1M)

Review of Wood Heater and Fireplace Emissions Factors - December 2006 (PDF 135K) National Emission Inventory: Ammonia Emissions from Animal Agricu ltural Operations, Revised Draft Report - April 2005 (PDF 9K) Solvent Mass Balance Approach For Estimating VOC Emissions From Eleven Nonpoint Solvent Source Categories - Draft March 28, 2005. (PDF 3.5M)

Mobile Documentation Updates for 2002 Version 4 - November 2008. Documentation For The Final 2002 Mobile National Emissions Inventory

- Version 3 - September 2007. (PDF 986K) Documentation For The Onroad National Emissi ons Inventory for Base Years 1970

- 2002 - January 2004. (PDF 265K) Documentation For Aircraft, Commercial Marine Ve ssel, Locomotive, And Other Nonroad Components Of The National Em issions Inventory, Volume I

- Methodology - September 2005. (PDF 700K) Documentation For Aircraft, Commercial Marine Ve ssel, Locomotive, And Other Nonroad Components Of The National Em issions Inventory, Volume II

- Supporting Documentation (PDF 17K) General Aircraft References (PDF 11M) General Commercial Marine Vessel References (PDF 6.5M) General Locomotive References (PDF 4.7M) General Other Nonroad References (PDF 20M)

Inventory Data

Point Sector Data - Version 3 of the 2002 NEI - The foll owing zipped Access summary files were created in September 2007 and contain annual em issions in tons per year. if you have any questions, please contact Roy Huntley or (919) 541-1060. Questions on Hazardous Air Pollutants (HAPs) and the ALLNEI CAP file should be directed to Anne Pope or (919) 541-5373.

Point Facility Summary - For both CAPs and HAPs (18 MB) SCC Summary - For both CAPs and HAPs at county, state and national level. (31 MB) ALLNEI_HAP_Annual_01232008 - Point stack summary data for HAPs only (129 MB) ALLNEICAP_A nnual_11302007 - Point stack summary data for CAPs only (174 MB) NEI_2002_Point_Facility_ID_History_01182008 - Faci lity identifiers, names and locations for sites in current and previous version of the NEI (Creat ed 1/2008) (22 MB) If you have any questions, please contact Anne Pope or (919) 541-5373.

Nonpoint Sector Data - Version 3 of the 2002 NEI - The following zipped Access summary file was created in September 2007 and contain annual emissions in tons per year. If you have any questions, please contact Roy Huntley or (919) 541-1060.

SCC Summary - For both CAPs and HAPs at the natio nal, state, and county level. (73 MB)

All Sector Data - Version 3 of the 2002 NEI - The following zipped Access file was created in October 2007 and contains Tier 1, Tier 2, an d Tier 3 summaries for criteria polluntants only. Annual emissions are in tons per year. If you have any questions, please contact Roy Huntley or (919) 541-1060.

Tier Summary - County, State and National Level (52 MB) 

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6/28/2011 htt p ://www.e p a. g ov/ttn/chief/net/2002inventor y .html

### Posted Updates to Data

If you would like to submit comments or recomme ndations, please send an email to the Info Chief Help Desk at info.chief@epa.gov . The subject should be " 2002 final NEI comment ." As time and resources permit the 2002 inventory will be updated and corrected. This information is also posted in the folder General_Inventory_Information on the FTP site.

February 23, 2006: Files related to the fo llowing areas of the NEI are not included in this release but will be available shortly: Emission estimates and documentation for CAP and HAP emissions from Wildfires and Managed Burns. Nonpoint sector documentation. Point sector documentation and QA augmentation report. March 1, 2006: Readmes were ad ded to national ASCII text files and reposted. SCC, SIC, and facility summary files for point sources were posted. CAP only. SCC summary files for nonroad and onroad mobile sources were posted. CAP only. SCC summary files for nonpoint so urces were posted. CAP only. All sector (sources) Tier 1, 2 and 3 summary files were posted (all_sector_summary_data folder). CAP only. March 9, 2006: The nonroad national ASCII zip file was repo sted. The EM table was too large and was divided into two tables. The onroad and nonroad county summary file s were reposted. Files containing the individual Count y -SCC-Pollutant Emissions values in tons p er y ear for 2002 are bein g Mobile Sector Data - Version 4 of the 2002 NEI - The foll owing zipped Access files were created in September 2008. Annual emissions are in tons pe r year with zero emi ssion values removed. Nonroad files include aircraft, lo comotive, and commerical marine ve ssels. No code description are added to these files to li mit the file size. SCC and pollutant de scriptions are provided at EIS Code Tables . Point of contact for the Mobi le Section is Laurel Driver or (919) 541-2859.

SCC Summary Nonroad County 9 of 9 (354.53 MB) Nonroad State and National (12.97 MB) Onroad County 5 of 5 (209.38 MB) Onroad National and State (17.98 MB)

Auxillary Files - NMIM National County Database (NCD) Fi les - The following fi les were created in July 2007. The zipped file contains the MySQL NC D tables and external f iles used to develop the 2002 NEI Version 3 emissions estimates.

NCD Files (181 MB)

2002 Nonroad Supplement GIS Data - For nonroad source categories , activity or fuel use data are not readily available for all counties in the U. S. Therefore, emissions often are calculated at the national level and allocated to individual counties based on ap propriated surrogates. Often the surrogate data are available as Geographic Informat ion System (GIS) data sets. Three sets of files are provided here which contain the GIS data us ed to spatially allocate emissions for aircraft, commerical marine vessels (CMV), and locomotives. All of the 2002 data used in this inventory effort were obtained from the Department of Tr ansportation's Bureau of Transportation Statistics (BTS) or the FAA's Emissions Disper sion and Modeling System (EDMS)

2002 Nonroad Supplement GIS Data
Biogenic Sector Data Biogenic Sector Data and Readme for biogenic data - The biogenic emissions data has not been updated since it was originally posted in March 2004. It has been moved to the Final 2002 NEI FTP site for your convenience.

National Emissions Inventory Input Format

NEI Code Tables 

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6/28/2011 htt p ://www.e p a. g ov/ttn/chief/net/2002inventor y .htmlprovided in a set of five tab-delimited ASCII format files, because a sin g le file for the entire US is too large to be readable in most systems. The CAP nonroad and onroad SCC summary files were updated. The CAP point SCC and SIC summary files were updated. The CAP nonpoint SCC summary file was updated. The Tier 1 through Tier 3 CAP al l sector files were updated. March 15, 2006: Biogenic data from March 2004 was moved to 2002 NEI final FTP si te. No changes were made to the data. A point source facility file was added to th e point_sector_data which includes facility IDs and history from 1999 to 20 02. A readme file is included with the zipped MS Access file. The augmentation report, NEI Quality Assurance and Data Augmentation for Point Sources , dated February 2005, was added to th e inventory_documentation folder. Links to the NIF code tables and NOF stru cture specifications were added to this webpage in the table above. March 22, 2006: The following point sector files were updated: nei2002_point_state_summary.zip nei2002_point_national_summary.zip nei2002_point_county_summary.zip nei2002_cap_sicsummary.zip nei2002_cap_point_sccsummary.zip nei2002_cap_facilitysummary.zip The following all sector files were updated: nei2002_cap_all_ sector_tier3annual_summary.zip nei2002_cap_all_ sector_tier2annual_summary.zip nei2002_cap_all_ sector_tier1annual_summary.zip April 12, 2006: The following file was updated: nei2002_point_detailed_data_040506.zip. Deta iled national ASCII files prepared in NEI Output Format (NOF) - Data updated. May 31, 2006: The following regional MS Access files pr epared in NEI Output Format (NOF) were posted: nofv3_msaccess2002_jan05_pointregion1.zip nofv3_msaccess2002_jan05_pointregion2.zip nofv3_msaccess2002_jan05_pointregion3.zip nofv3_msaccess2002_jan05_pointregion4.zip nofv3_msaccess2002_jan05_pointregion5.zip nofv3_msaccess2002_jan05_pointregion6.zip nofv3_msaccess2002_jan05_pointregion7.zip nofv3_msaccess2002_jan05_pointregion8.zip nofv3_msaccess2002_jan05_pointregion9.zip nofv3_msaccess2002_jan05_pointregion10.zip Oct 20, 2006: Summaries of changes between ve rsion 1 and version 2. August 2, 2007 2002 Aircraft emission estimates have been revise d for lead, arsenic, and mercury and to place all airports at lati tude/longitude (point source ) locations. Pl ease see the README file posted with the data. October 15, 2007 Point Facility Summary file for b oth CAPS and HAPs was posted Point SCC Summary file for both CAPs and HA Ps at the county, state, and national level was posted Nonpoint SCC Summary file for both CAPs and HAPs at the county, state, and national level was posted Tier Summary file for CAP was posted Onroad/nonroad SCC summaries for CAP and HAP were posted. October 22, 2008 2002 Lead emissions at airp orts have been revised . The Technical Support Document (TSD) posted here provides the methodology used to esti mate airport-specific lead emissions. The airport-specific lead estimates for 2002 are also provided in this TSD. The 2002 NEI does not include these upda tes. Subsequent NEI base years will incor p orate the methods documented here. 

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6/28/2011 htt p ://www.e p a. g ov/ttn/chief/net/2002inventor y .htmlNovember 18, 2008 Onroad and Nonroad documentation up dates for 2002 V4 were added. SCC Summaries for 2002 V4 re p laced V3 Onroad and Nonroad 

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