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OK Corporation Commission/PSTD

Four exams are available to meet the requirements for licensure through the Petroleum Storage Division at the Oklahoma Corporation Commission:

•    Environmental Consultant
•    Aboveground Storage Tank Installation
•    Aboveground Storage Tank Removal
•    Underground Storage Tank Installation
•    Underground Storage Tank Removal


Testing Fees

$100.00 per test

Testing Options

  • Register for an exam at a test site.
  • Register for an exam with an online proctor.
    :  Please allow 2 business days to process your registration.
  • For information on the online proctoring process, please review the following videos:

Candidate Resources

Required Documentation

  • Printed copy of the cover letter on official letterhead & Approval to Test letter (no longer on security paper)
  • Valid, current photo ID issued by a government entity within the U.S.

Allowed Resources

  • Calculator and/or scratch paper

Helpful Links

Last Modified on Sep 18, 2023
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