Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Emergency

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History
    • Staff Directory

Breadcrumb

  1. Home
  2. Air Emissions Inventories

Air Emissions Points of Contact

Points of Contact
Name  Email  Responsibilities
Marc Houyoux houyoux.marc@epa.gov Group Leader and Emissions Inventory Guidance
Rich Mason mason.rich@epa.gov

NEI Team Lead, Emission Trends, Nonpoint: RWC, ICI Fuel Combustion, Mercury, Dust, and all other nonpoint sources not covered by others

Alison Eyth eyth.alison@epa.gov Emissions Modeling Team Lead, temporal allocation, spatial allocation
Tesh Rao rao.venkatesh@epa.gov Emissions Methods Lead, Agricultural Fertilizer, Livestock
Ron Ryan ryan.ron@epa.gov All Point sectors except Airports and Rail Yards
Janice Godfrey godfrey.janice@epa.gov

Source Classification Codes (SCCs), and all Onroad and Nonroad Mobile Sources, including Point Airports and Rail Yards, and Nonpoint Commercial Marine Vessels and Rail

Jeff Vukovich vukovich.jeffrey@epa.gov Fires, Oil and Gas, Biogenics, emissions projections
Jennifer Snyder snyder.jennifer@epa.gov Training, Website Development and Maintenance
Julia Gamas gamas.julia@epa.gov Combined Air Emissions Reporting (CAER) Project 
Caroline Farkas farkas.caroline@epa.gov 2023 Emission Inventory Conference Technical Chair, Air Toxics Data Updates, emissions projections
Lindsay Dayton dayton.lindsay@epa.gov Quality Assurance, Sharepoint Access, EIS Access
Art Diem diem.art@epa.gov SPECIATE, HAP emissions
Karl Seltzer seltzer.karl@epa.gov Solvents, Asphalt Paving

For questions or information regarding air emissions factors for criteria and hazardous air pollutants, contact info.chief@epa.gov.

If you have a specific air quality problem or complaint, see the Report Environmental Violations website to contact the EPA.

Air Emissions Inventories

  • Get Data
    • 2020 NEI
      • 2020 NEI Technical Support Document (TSD)
      • 2020 NEI Online Retrieval Tool
      • 2020 Supporting Data and Summaries
      • 2020 Plan
      • 2020 NEI and Trends Report
    • All Emissions Data
    • Air Pollutants Emissions Trends Data
    • Air Emissions Modeling
  • Report Data
    • 2023 NEI Documentation
    • CAERS
      • CAERS Login
      • CAERS User Guide
    • EIS
      • Emissions Inventory System (EIS) Gateway
      • EIS User's Manual and How To's
      • Emissions Inventory System (EIS) Bridge Tools
    • Air Emissions Reporting Requirement (AERR)
  • Other Resources
    • Frequent Questions
    • Training
    • Emissions Inventory Guidance
    • Conference
      • 2023 International Emissions Inventory Conference
    • Methods and Science
  • Emissions Inventory Listservs
  • Points of Contact
Contact Us About Air Emissions Inventories
Contact Us About Air Emissions Inventories to ask a question, provide feedback, or report a problem.
Last updated on May 31, 2024
  • Assistance
  • Ayuda
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • Aide
  • Asistans
  • Korean
  • Assistência
  • Russian
  • Tulong
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.