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Regional Contacts for SIP Mobile Source Programs

U.S. EPA Region 1: 
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont
Areas CoveredContact Information
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont

Eric Rackauskas at 617-918-1628 or Rackauskas.eric@epa.gov 

Ayla Martinelli 617-918-1057 or Martinelli.ayla@epa.gov  

U.S. EPA Region 2: Air Programs Branch
New Jersey, New York, the territories of Puerto Rico and the U.S. Virgin Islands 
Areas CoveredContact Information
New Jersey, New York, The territories of Puerto Rico and the U.S. Virgin IslandsDaniel Birkett at 212-637-3701 or birkett.daniel@epa.gov  
U.S. EPA Region 3:
Delaware, the District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia 
Areas CoveredContact Information
Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia

Brian Rehn at 215-814-2176 or rehn.brian@epa.gov

Greg Becoat at 410-305-3026 or Becoat.gregory@epa.gov  

U.S. EPA Region 4:
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee 
Areas CoveredContact Information
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, TennesseeGillian Walshe-Langford, Ph.D. at 404-562-9583 or walshelangford.gillian@epa.gov 
U.S. EPA Region 5:
Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Air and Radiation Division 
Areas CoveredContact Information
Ohio, Indiana, Illinois, Michigan, Minnesota, Wisconsin 

Neena Nallaballi at (312) 353-1770, or Nallaballi.neena@epa.gov 

Tyler Salamasick at (312) 886-6206, or Salamasick.tyler@epa.gov 

U.S. EPA Region 6:
Arkansas, Louisiana, New Mexico, Oklahoma, and Texas 
Areas CoveredContact Information
Arkansas, Louisiana, New Mexico, Oklahoma, TexasClovis Steib at 214-665-7566, or steib.clovis@epa.gov  
U.S. EPA Region 7:
Iowa, Kansas, Missouri, and Nebraska
Areas CoveredContact Information
Iowa, Kansas, Missouri, Nebraska

Jed Wolkins at 913-551-7588, or wolkins.jed@epa.gov 

Jason Heitman at 913-551-7664 or Heitman.jason@epa.gov 

U.S. EPA Region 8:
Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming 
Areas CoveredContact Information
Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming Greg Lohrke at 303-312-6396, or lohrke.gregory@epa.gov  
U.S. EPA Region 9:
Arizona, California, Hawaii, Nevada, and the territories of Guam and American Samoa 
Areas CoveredContact Information
Arizona, California, NevadaJeff Buss at 415-947-4152 or buss.jeffrey@epa.gov 
U.S. EPA Region 10:
Alaska, Idaho, Oregon, and Washington 
Areas CoveredContact Information
Alaska, Idaho, Oregon, Washington Tess Bloom at 206-553-6362, or bloom.tess@epa.gov 

State and Local Transportation

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Contact Us About State and Local Transportation
Contact Us About State and Local Transportation to ask a question, provide feedback, or report a problem.
Last updated on October 15, 2026
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