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Contact Us About DERA

Mailing Address:
1200 Pennsylvania Ave
Mail Code 6406A
Room 5358K (Overnight)
Washington, DC 20450

Report a Violation
Report possible violations
of environmental laws and regulations

Report an environmental violation

Report possible violations of environmental laws and regulations.

DERA Helpline

For information about DERA funding or diesel technologies, contact our helpline.
Phone: 1-877-623-2322
Email: DERA Helpline (


Receive email updates on DERA funding, issues, and resources.

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Diesel Emission Quantifier (DEQ) Helpline

For information about the Diesel Emission Quantifier, contact our helpline.
Email: Diesel Emission Quantifier Helpline (

Questions and Comments

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