As used in the Oil and Gas Ad Valorem Production Tax Act:

A. “commission”, “department” or “division” means the taxation and revenue department, the secretary of taxation and revenue or any employee of the department exercising authority lawfully delegated to that employee by the secretary;

B. “production unit” means a unit of property designated by the department from which products of common ownership are severed;

C. “severance” means the taking from the soil any product in any manner whatsoever;

D. “value” means the actual price received for products at the production unit, except as otherwise provided in the Oil and Gas Ad Valorem Production Tax Act;

E. “product” or “products” means oil, including crude, slop or skim oil and condensate; natural gas; liquid hydrocarbon, including ethane, propane, isobutene, normal butane and pentanes plus, individually or any combination thereof; and non- hydrocarbon gases, including carbon dioxide and helium;

F. “operator” means any person:

(1)     engaged in the severance of products from a production unit; or

(2)     owning an interest in any product at the time of severance who receives a portion or all of such product for the person’s interest;

G. “purchaser” means a person who is the first purchaser of a product after severance from a production unit, except as otherwise provided in the Oil and Gas Ad Valorem Production Tax Act;

H. “person” means any individual, estate, trust, receiver, business trust, corporation, firm, copartnership, cooperative, joint venture, association or other group or combination acting as a unit, and the plural as well as the singular number;

I. “interest owner” means a person owning an entire or fractional interest of whatsoever kind or nature in the products at the time of severance from a production unit or who has a right to a monetary payment that is determined by the value of such products;

J. “assessed value” means the value against which tax rates are applied; K. “tax” means the oil and gas ad valorem production tax; and

L. “volume” means the quantity of product severed reported using: (1)     oil, condensate and slop oil in barrels; and

(2)     natural gas, liquid hydrocarbons, helium and carbon dioxide in thousand cubic feet at a pressure base of fifteen and twenty-five thousandths pounds per square inch.