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.
  NOTE:  Please allow 2 business days to process your registration.

• For information on the online proctoring process, please review the following videos:

  • Process Walk-through

Candidate Resources

• HCP Test Sites

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

• Oklahoma Corporation Commission-Petroleum Storage Division