Ark. Code Ann. § 26-55-904: Measurement of vehicle tanks

(a) The Director of the State Plant Board shall gauge and determine the capacity of vehicle tanks used in the sale or delivery of petroleum products in this state and inspect and test, to ascertain if they are correct, the capacity indicators of the compartments of those vehicle tanks.

(b) The director is authorized to use the services of a recognized calibrating agency in determining the correctness of measurements whenever a difference of opinion exists between the owner or operator of a tank and the director as to the correctness of the gauging, and that determination shall be final.