The symbols appear to be spray-painted. Each barrel has a green sticker pasted to it that says the barrels contain soil and “non-hazardous waste” and attribute the shipper to Shaub-Ellison ...

and disposes hazardous and non-hazardous waste, such as resource recovery, physical treatment, incineration, landfill disposal, wastewater treatment, lab chemicals disposal, and explosives ...

Their origin was unknown Tuesday afternoon and the symbols appeared to be spray-painted. Each barrel has a green sticker pasted to it that says the barrels contain soil and “non-hazardous waste ...