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Calumet Harbor, IN Mystery Bitumen; S Walton Dr, Chicago, IL 60617, USA

S Walton Dr, Chicago, IL 60617, USA | 2017-Aug-25

Initial Notification: On August 25th, 2017, USCG MSU Chicago contacted the Great Lakes SSC concerning a mystery bitumen that was discovered by the USACE during a rock removal project in the Calumet Harbor. The USACE requested assistance in determination of whether the material was naturally occurring.

Incident Details
Primary threat:Oil
Products of concern:Bitumen
Latitude (approximate): 41° 43.86′ North
Longitude (approximate): 87° 30.34′ West