1 / 12

Emission Inventory Issues

This document outlines the requirements for emission inventories under the PM Rule, including base year and projection year inventories, emission limits, and preparing a file for attainment modeling.

soverton
Download Presentation

Emission Inventory Issues

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Emission Inventory Issues Roy Huntley Emission Inventory & Analysis Group, US EPA, OAQPS June 20, 2007 Huntley.Roy@epa.gov

  2. What the PM Rule Requires States to Do Regarding Inventories • Base Year Inventory • Projection Year Inventory • Reasonable Further Progress

  3. Base Year Inventory • Used for Attainment Demonstration • 2002 is recommended for base year but could be other suitable year • Emission requirements • CERR Emission requirements are a minimum • (Consolidated Emission Reporting Rule) • http://www.epa.gov/ttn/chief/cerr/index.html

  4. Base Year Inventory • Report directly emitted PM plus all PM precursors • Includes VOC, NOx, SO2, and NH3 • Plus CO • Include PM condensables • Required by CERR • PM emissions limits in SIP don’t have to include condensables, but PM in the EI has to include condensables. • May want to more highly resolve emissions from certain nonpoint categories • Like ports, residential wood combustion

  5. Projection Year Inventory • Inventory projected to year prior to attainment • Ex. 2009 for 2010 attainment • Reason is that attainment date is April 5 • May have multiple projection years • Potentially 2009, 2012, 2014 • Same level of detail as base year inventory

  6. Overview of Preparing a File for Attainment Modeling

  7. Preparing Emission Inventory Data File for Modeling • AQ models need hourly emissions of model species • Temporally allocate emissions to hourly • Spatially allocate emissions to grid cells • Speciate PM + VOC • Do for base and future year(s)

  8. Some Things to Consider • Can use hourly EGU data from CAMD (EPA) for base year • Can spatially allocate onroad emissions to a road network

  9. Tools • PM resource center – Provides links to resources used for developing PM 2.5 emission inventories. • http://www.epa.gov/ttn/chief/eiip/pm25inventory/index.html • Getting Started • Introduction to PM2.5 inventories, standards, and data. • Inventory Preparation • Inventory concepts, guidance and procedures. • Tools • Emission Estimation Tools and Activity Data. • Emissions QC, Preprocessing and Projections • Quality Control (QC) and model preprocessing resources. • Emission Modeling Clearinghouse (later slide)

  10. Tools(continued) • Emission Factors • Webfire - http://www.epa.gov/ttn/chief/efpac/index.html • NEI documentation - http://www.epa.gov/ttn/chief/net/2002inventory.html#documentation • Nonpoint documentation, Appendix C: Emission Factors and County-Level Activity Data Used to Calculate 2002 Emissions by Category • SPECIATE • SPECIATE is the EPA's repository of total organic compound (TOC) and particulate matter (PM) speciation profiles of air pollution sources. • SPECIATE 4.0 replaces the prior version of the SPECIATE version 3.2 released November 2002. It includes a total of 4,080 PM and TOC profiles including 2,019 new profiles. • http://www.epa.gov/ttn/chief/software/speciate/index.html

  11. Tools (continued) • Mobile source models • MOBILE6.2 (http://www.epa.gov/otaq/mobile.htm) • Contact - mobile@epa.gov • NONROAD2005 (http://www.epa.gov/otaq/nonrdmdl.htm) • Contact - nonroad@epa.gov • PM augmentation • Creating PM10 data from PM data • Creating PM2.5 data from PM10 data. • Adding condensables • http://www.epa.gov/ttn/chief/net/2002inventory.html

  12. Tools (continued) • Emission Modeling Clearinghouse • http://www.epa.gov/ttn/chief/emch/invent/index.html • EI conference proceedings • http://www.epa.gov/ttn/chief/conferences.html • EIA/DOE – state level data on fuel consumption (distillate oil, kerosene, etc) by sector (industrial, commercial, etc) • http://www.eia.doe.gov/emeu/states/_seds.html

More Related