Emission Inventory Input Format Eastern Canadian Premiers/New England Governors Conference Data Exchange Workgroup Gregory Stella U.S. Environmental Protection Agency

Data Transfer Management & Access n Need Common System for Emissions and Modeling Data Exchange –Single Repository –Ozone, PM, Toxics Emissions Data –Regional Scale AQ Modeling Data –International Coverage –Annual / Episode Specific

Data Sharing Needs n Mass and Modeling Emissions Data –Consistency Data Standards Source Category Coverage Pollutant Coverage Geographic Coverage Episodic Information Data Elements Transfer Formats Confidentiality

Data Transfer Flow Chart U.S. Data Preparation Canadian Data Preparation Data Holding Tank QA and Data Integration Emissions Database Output Internet, etc. OutputData Management Data Input/Processing

Data Sharing System Selection n Existing Data Management Systems n Similar Data Systems n Easy Access by All Entities –Summary Emissions Information –Output of AQ Modeling Input Files n Ability to Update/Revise Data n Familiarity (Ease of Use) –Training Needs

Development of National Emission Trends (NET) Database n EIIP Data Management Committee –EIIP Data Model –EPA’s NET Database Redesigned to Use NET Input Format –Data Transfer Options NET Input Format Electronic Data Interchange (EDI X12) –Supported by EPA’s Office of Information

NET Input Format n Data Submission Information –User Instructions File Organization, File Terms, Definitions –Appendix A Conventions for Reporting Specific Data –Code Tables Valid Values for Coded Data Elements –Units Conversion Table Decouples SCC from Process Throughput

NET Input Format Sectors n Point Sources –EGU and Non-EGU Facilities n Area / Nonroad Mobile Sources n Highway Mobile Sources n Biogenic Sources

Current Data Input System n National Emission Trends Input Format –Used for Criteria/PM Data Transfer –Under Modification for Toxic Data Use –Future Models-3 Input Format Tool –Used by State/Local/Tribal Agencies – Under “Data Submission”

Data Incorporation n Quality Control –Data Formats –Mandatory Elements –Coverage Geographic Source Category Pollutant

Data Incorporation (cont.) n Data Integration / Augmentation –Complete Coverage of Emissions Calculate Alternate Emission Estimates –Blend of State and Agency Data Allocation of Nationally Derived Activity EGU, Nonroad and Onroad Mobile

Data Incorporation (cont.) n Quality Assurance –Checks for Questionable Data Out of Range Double Counting –Q/A Reports to Reporting Agencies Source Category and Facility Level –Regional Office Review Matches With Other Reported Data

Next Steps n Define What’s Needed –Data Management System –Common Emissions Data –Shared Modeling Surrogate Files –Easy Data Access / Modification –Modularity Inputs for Multiple AQ Models

Future Plans n Merging of Canadian and U.S. Emissions –Data Available at End of October 1995 Canadian Emissions 1996 U.S. Emissions Modeling Surrogate Files Use in Models-3 Framework –8 to 12 Month Effort Including Confidentiality Issues

Future Plans (cont.) n Canada-U.S. PM Modeling Workshop for Transboundary Impacts Assessment –Support of Anticipated Negotiations for a PM Annex Under the Canada / U.S. Air Quality Accord –Assess the Regional Scale Air Quality Impact of Reducing Precursor Pollutant Emissions