R315-101-4. Site Characterization

The following information shall be collected to characterize the site, and define site boundaries and Area(s) of Contamination:

(a) A legal description of the site;

(b) Historical land use and ownership of the site;

(c) Topographical map(s) of sufficient detail, scale, and accuracy to depict and locate all past and current physical structures including all building(s) and waste activities at the site;

(d) Information and maps of sufficient detail, scale, and accuracy to describe regional, local, and site geology, surface water, and hydrogeological conditions;

(e) An inventory of all current and past wastestreams managed at the site, including process descriptions and suspected contamination source information;

(f) Background levels of suspected hazardous constituents based on the inventory as determined in R315-101-4(e) in media of concern, e.g. sediments, soil, groundwater, surface water, and air which are representative of the site; and

(g) Location and boundaries of all Area(s) of Contamination, including concentrations, types and extent of hazardous constituents. Media to be sampled may include sediments, soil, groundwater, surface water, and air, as applicable.