(1) Plan holders and responsible parties are required to document their initial spill actions and the plan shall include the forms that will be used for such documentation.

(2) The plan shall describe what equipment will be used to conduct initial spill assessment, including equipment effective during darkness and low visibility conditions, such as visual methods, tracking buoys, trajectory modeling, aerial overflights, thermal or infrared imagery.

(3) The plan must state how safety assessment including initial air monitoring will be conducted for all types of spills, including spills to groundwater.

(4) The plan must list procedures that will be used to confirm the occurrence, and estimate the quantity and nature of the spill. An updated report is required if the initially reported estimated quantity or the extent of the contamination changes significantly.