PES prepared an improved emission inventory for 1997 to support regional ozone air quality modeling in the Mid-Atlantic and Northeastern states. It builds on EPA's 1996 National Emission Trends (NET) Version inventory.

To better summarize and visualize the data, maps are generated from the MARAMA 1997 Ozone Precursors Emission Inventory. This inventory is in *.dbf format. To generate maps with ArcGIS software, it was necessary to convert the raw data files into a compatible format using Microsoft Access 1997. These converted files were then saved as *.dbf files and then used to create the maps below.

Feedback Requested: Please send an e-mail to MARAMA with your comments and requests concerning the emissions maps displayed below. Please state if you would like to see any other 4, 7, or 10 digit SCC source category maps, any other pollutants, if it would be helpful to see certain SCC maps in t/area or t/population basis. Please provide feedback on any unusal looking data.

Summary report on the 1997 Point Source Emissions and Comparison with OTAG Inventory (PDF format)

Summary report on the 1997 Area Source Emissions and Comparison with OTAG Inventory (PDF format)

1997 Point Source Maps

Quality Assurance/Quality Control Measures

1997 Area Source Maps

Quality Assurance/Quality Control Measures

1997 Non-Road Source Maps

Quality Assurance/Quality Control Measures


1996 Highway Mobile Source Maps

Quality Assurance/Quality Control Measures

 OSD Emission Inventory Summary (by State) Tables and Graphs


To obtain the QA/QC'd NEI data files used in GIS mapping, please send an e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it.. (July 12, 2002) (Highway: ne96m400.dbf, Area: areatprl.ar, Point: p97ac400_marama.dbf, p97ce400_marama.dbf, p97em400_marama.dbf, p97ep400_marama.dbf, p97eu400_marama.dbf, p97sj400_marama.dbf).

To obtain a copy of the foundation files, please send an e-mail to Eric Zalewsky.

Processing MARAMA's 1997 Area Emissions with EMS2001 and Smoke (PDF format)
Temporal Profile Codes Used by EMS2001 and Smoke (MS Excel format)
Area Source Emission Totals by State with EMS2001 and Smoke (MS Excel format)
Summary of Corrections made in the Foundation Files by Eric Zalewsky of New York (PDF format)

To obtain the Final Report (July 31, 2001), please send an e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it.. File contains an executive summary and sections on point, area, non-road and highway sources (in Adobe Acrobat format). The report documents the data sources, describes the QA/QC work undertaken and the final products, provides summary tables and recommendations of follow up efforts.

Summary of 1996 VOC emissions from Dry Cleaning by State (MS Excel format)

Auxillary NET 1996 Files containing VOC emissions from adhesives (MS Excel format)

List of (300+)_1996 Point Sources with Wrong Stack Parameters (corrected in MARAMA inventory) (MS Excel format)

National Air Pollution Emissions Trends Procedures Document 1900-1996  (section 4) (exit MARAMA)

Please note that all inventory (dbf) and foundation files are FoxPro compatible. Access should enable you to open and view all of the files as well. However, if you are using Excel (which has a maximum worksheet size of 65,536 rows by 256 columns) you will NOT be able to view some of the files completely (loosing some data when loading). To view those larger files use FoxPro, Access or Word.

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