Background

The Reilly Tar & Chemical site is located at 1500 S. Tibbs Ave. in the southwest quadrant of Indianapolis. Minnesota Street divides the 120-acre site into two parcels. The Oak Park property, which occupies approximately 40 acres, is located north of Minnesota Street. The Maywood property, which occupies approximately 80 acres and includes OU1, is located south of Minnesota Street and was the location of wood preserving operations from 1921- 1972.