Okla. Stat. tit. 52 § 420.29-2
Any purchaser who pays a fee to a loading rack operator or owner of LP gas at the time of import on a load of LP gas that is exempt under the provisions of this act may apply to the loading rack operator or owner of the LP gas at the time of import for a refund of the amount paid. To apply for a refund, the purchaser must complete a refund request form provided by the Commission, and return it to the loading rack operator or owner of the LP gas at the time of import who collected the fee. Any loading rack operator or owner of LP gas at the time of import required to refund a fee to a purchaser shall report the amount of the refund to the Commission. All amounts refunded and reported according to the provisions of this act may be deducted from the total amount of fees collected to arrive at the total amount of fees to be remitted to the Commission. All refund amounts reported must be supported by refund request forms kept on file by the loading rack operator and be available for inspection by the Commission for a period of four (4) years.
Okla. Stat. tit. 52, § 420.29-2