Gasoline means any liquid product prepared, advertised, offered for sale or sold for use as, or commonly and commercially used as, motor fuel for use in a spark-ignition, internal combustion engine, and which meets the specifications provided in Iowa Code section 214A.2.
Aviation gasoline means fuel designed for use in the operation of aircraft other than jet aircraft,
Quarterly (1/Quarter) sampling frequency means the sampling shall be done in the months of March, June, August, and December, unless specifically identified otherwise in the Effluent Limitations and Monitoring Requirements table.
Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.