Crews at scene of radioactive material leak in Antioch

Crews are at the site of a potential hazmat situation in Contra Costa County. 

Robert Marshall Fire Marshall with Contra Costa Fire says at 9 a.m. they received a call about a piece of construction equipment that was damaged during the work they were doing.

The equipment contained a small amount of radioactive material, which was exposed to the environment. 

Crews are trying to determine how severe of a problem this is. 

An apartment complex next to the construction site has been evacuated. 

Stay with for updates.