The site investigation report shall include the following site background information:

1. (a) The department site identification number;
2. (b) The site name, address, property deed reference by county book and page, and property tax map and lot numbers;
3. (c) The name, mailing address, and daytime telephone number of the site owner and of a contact person for the site;
4. (d) A history of site ownership and operation based on documented land use, in accordance with “Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process”, ASTM International (ASTM) document ASTM E1527-21, dated 2021, available as noted in Appendix B;
5. (e) Copies of historical site plans and Sanborn Fire Insurance maps for the site, where available;
6. (f) A list of any aerial photographs reviewed, including the date and source for each photograph and a description of observations;

7. (g) A description of possible past or present contamination sources such as the following:

   1. (1) Underground or above ground storage tank systems including pumps, piping, and appurtenances;
   2. (2) Dry wells and floor drains including discharge locations, if known;
   3. (3) Areas of stained soil or stressed or dead vegetation;
   4. (4) Landfills;
   5. (5) Lagoons;
   6. (6) Septic systems;
   7. (7) Areas of surface discharges or spills;
   8. (8) Drum storage areas;
   9. (9) Areas used to store, treat, or dispose of hazardous wastes or hazardous substances;
   10. (10) Stockpiled soils;
   11. (11) Buried drum areas; and
   12. (12) Herbicide and pesticide use, storage, or disposal areas;

8. (h) A description of all known discharges of regulated contaminants, including the following information:

   1. (1) The date and a description of the discharge, including estimated quantities lost and recovered, the location of the discharge, and the party responsible for the discharge;
   2. (2) The date the discharge was reported to the department, if reported; and
   3. (3) A description of all response actions taken;
9. (i) A list of any previous investigations and reports pertinent to the site relating to a discharge of regulated contaminants, including a brief summary of findings;
10. (j) A copy of any previous investigation or report relating to a discharge of regulated contaminants, if not already on file with the department;
11. (k) A list of governmental records reviewed relating to discharges at the site;
12. (l) A locus plan using a color photocopy of a U.S. Geological Survey (USGS) map, 7-1/2 minute series if available, which clearly identifies the site location;

13. (m) A site plan drawn to scale on an 8-1/2 inches by 11 inches or 11 inches by 17 inches sheet, that clearly shows the following:

    1. (1) A title, a legend, and a true north arrow;
    2. (2) A graphic scale bar;
    3. (3) Source(s) from which the site plan was derived, if applicable;
    4. (4) The location, elevation, and datum of a permanent and recoverable bench mark;
    5. (5) Surface topography using ground spot elevations, contours, or noted changes in slope;
    6. (6) The location of the site’s property boundaries;
    7. (7) The areas of known and possible contaminant sources past or present on the site including but not limited to current or former possible sources listed in (g)(1)-(12), above;
    8. (8) Any paved areas on the site;
    9. (9) Monitoring wells, test pits, and borings; and

    10. (10) Identification of the following on and within 100 feet of the site:

        1. a. Surface water bodies;
        2. b. Water supply wells;
        3. c. Surface water sampling stations;
        4. d. Structures and buildings;
        5. e. Drainage swales; and
        6. f. Potential preferential migration pathways including but not limited to underground utilities; and
14. (n) Any additional information including the source(s) from which the site background information was obtained.

Source. (See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07; ss by #10831, eff 6-1-15; ss by #14419, eff 11-4-25, EXPIRES: 11-4-35