This from Dave Weaver:
7/11/18 CHICAGO – CFD, Peoples Gas Control 2″ Gas Main Break – Video by Dave Weaver
A 2″ natural gas main was ruptured in front of 10124 S. Ewing Ave. by a construction crew. The Chicago FD was summoned with a Level 1 HazMat response. Workers from Peoples Gas scrambled to dig a hole next to the hissing rupture in order to clamp it off and get it shut down as quickly as possible. Residents of the building adjacent to the leak were evacuated. Truck 17 and Engine 46 stretched and charged hose lines. Special Operations team members on Hazardous Incident Team 5-1-1 (Using the squad rig formerly loaned to the ‘Chicago Fire’ TV show) and Squad 5 monitored the air quality above ground and in the sewer. It took workers about 45 minutes to stop the leak before Batt 24 could secure the Level 1.