The tax shall be imposed in an amount equal to the value of the article used by the taxpayer multiplied by the rate in effect for the tax on the natural gas businesses under RCW 35.21.870 within the City of Moses Lake. The “value of the article used” does not include any amounts that are paid for the hire or use of a natural gas business in transporting the gas subject to tax under this subsection if those amounts are subject to tax under RCW 35.21.870. (Ord. 1441, 1990)