The following individuals support DFOG member stations by monitoring the listserv to provide technical guidance and attending meetings. For more information, please see this list for contact information and additional details regarding their expertise.

Southwest Research Institute (SWRI)
Mr. John Gomez

• Diesel fuel testing services and member of ASTM D02 Committee

SGS Herguth Labs
Ms. Mindy Villalba

• Chemical testing services and QA of diesel fuel programs

Fuel Tank Maintenance Co., LLC
Mr. Jerry Hahn

• Tank cleaning/maintenance services and fuel filtering support

National Biodiesel Board
Mr. Scott Fenwick

• Technical director of the US biodiesel industry's central coordinating entity
• Chair of the ASTM D02 Committee

Biodeterioration Control Associates, Inc.
Dr. Fred Passman

• More than 45 years of experience in environmental-industrial microbiology
• Chair of the ASTM D02 Subcommittee 14's Fuel Microbiology Working Group

Fuel Quality Services, Inc. (FQS)
Mr. Edward English

• fuel system biocides, stability additives, microbial test kits, and add-on site services
• Vice-chair of the ASTM D02 Subcommittee 14 on the stability and cleanliness of fuels and chairs the ASTM D02 Subcommittee 14's Fuel Corrosivity Working Group

Tennessee Department of Agriculture
Mr. Randy Jennings

• former Director of Operations of the division of the TN Department of Agriculture dealing with Fuel Quality