HMN-Baltimore County fire officials stated that the evacuation came after an unknown odor tipped them off to the hazmat release.
Baltimore County Fire officials said 21 homes in Halethorpe were evacuated following reports of an unknown odor in the area.
Fire officials said crews responded shortly after 6 p.m. to a home in the 4440 block of Fenor Road in Halethorpe for reports of an unknown odor.
Arriving crews tested the home and found low levels of an unknown gas. Crews then tested nearby homes and found they also displayed low levels of an unknown gas.
Officials determined that 21 homes needed to be evacuated.
“The Fire Department’s meters led them to the storm drains, which also had a reading of gas. To mitigate that situation, the firefighters took copious amounts of water and flushed the storm drain out settle that odor of gas or whatever was in there,” said Nick Tyson, of the Baltimore County Fire Department.
Following the storm drain flush, crews returned to the homes to test for gas again and deemed them to be safe. The majority of homeowners were allowed back inside late Tuesday night.
One resident was taken to the hospital as a precaution, but no one was seriously hurt.
Crews left the scene around 10:30 p.m.
Hazmat crews are working to determine what kind of gas it was.