Iowa Admin. Code r. 561-17.11
All persons controlling or operating any oil and gas wells or pipelines, or receiving tanks, storage tanks, or receiving and storage receptacles into which crude oil is produced, received, or stored, or through which oil or gas is piped or transported, shall notify the department of fire, breaks, leaks or blowouts as soon as possible but not later than six hours after the incident occurs or is discovered, in accordance with Iowa Code section 455B.386. A written report, giving full details concerning all fires which occur at such oil or gas wells or tanks or receptacles on their property, all tanks or receptacles struck by lightning and any other fire which destroys oil or gas, and any breaks or leaks in or from tanks or receptacles and pipelines from which oil or gas is escaping or has escaped shall be submitted to the department within 30 days. In all reports of fires, breaks, leaks, or escapes, or other accidents of this nature, the location of the well, tank, receptacle, or line break shall be given by section, township, range, and property so that the exact location thereof can be readily located on the ground. The report shall likewise specify what steps have been taken or are in progress to remedy the situation reported, and shall detail the quantity of oil or gas lost, destroyed, or permitted to escape. In case any tank or receptacle is permitted to run over, the escape thus occurring shall be reported as in the case of a leak.
Iowa Admin. Code r. 561-17.11