IDPH recommends that IEPA:
- Restrict access to the site. Maintain fences around the tar pit.
- Collect data to assess the surface soil contamination adequately (less or equal to 3 inches deep) and the contaminant migration into the groundwater, especially downgradient of the tar pit.
- Collect data to assess the surface water quality and the status of buried scrap cylinders.
- Reduce the potential for migration of on-site contaminants to off-site areas.
Constanta E. Mosoiu
Illinois Department of Public Health