Unless directed to do otherwise by the Department, an owner and an operator of a storage tank system and a responsible party shall assemble information about the site and the nature of the spill, release, or discharge that includes: Information gained while confirming the spill, release, or discharge and completing the initial abatement measures required in Regulations .02 and .03 of this chapter; Data on the nature and estimated quantity of a spill, release, or discharge; Data from available sources or site investigations, or both, concerning the following: Surrounding populations; Water quality; A map showing the use and approximate locations of wells potentially affected by the spill, release, or discharge; Subsurface soil conditions; Locations of subsurface utilities; Climatological conditions; and Land use at the site and surrounding area; The results of the site check performed in compliance with Regulation .03A(5) of this chapter; To determine whether free product must be recovered in accordance with Regulation .05 of this chapter, the results of the free product investigation performed in accordance with Regulation .03A(6) of this chapter; and Any other information required by the Department. An owner and an operator of a storage tank system and a responsible party shall: Prepare a written site characterization report that: Includes all of the information required under §A of this regulation regarding the site and the nature of the spill, release, or discharge; and Discusses the applicability, reliability, and validity of the information provided; and Submit the site characterization report required under §B(1) of this regulation to the Department within: 45 days of confirming the spill, release, or discharge; or Another reasonable time period required by the Department.