An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Fuels Registration, Reporting, and Compliance Help

User Guide for Engineering Review Web Forms in OTAQREG

This guide can be used by independent third-party professional engineers (PEs) who will be submitting the engineering review (ER) report using the ER web form in OTAQREG. This method of ER submission is only available for renewable fuel or foreign ethanol producers that have already been issued a company ID in the OTAQREG system.
PLEASE NOTE:  As of April 1, 2018, all updated ERs must be submitted to EPA by the PE using the OTAQREG ER web form.