Route 50 was closed at Interstate 97 in Anne Arundel County for three to four hours Sunday evening while hazmat crews cleaned up a spill from a leaking tanker-truck, an Anne Arundel County fire spokesman said.
A truck driver from New Jersey noticed a vapor cloud coming from his vehicle and called for help at about 5:04 p.m., said the spokesman, Capt. James Rostek.
Medics treated the 50-year-old driver for inhalation and took him to the Maryland Shock Trauma Center for potential hyperbaric therapy, Rostek said.
The tanker carried liquid isopathalol chloride, a Dupont chemical used in manufacturing, he said.
A crew from Dupont came down from New Jersey to address the leak, Rostek said. The truck was ultimately moved to the Park and Ride lot on Route 524, he said, and the Dupont staff deemed the truck to be safe.
It's unclear how the leak occurred, the spokesman said.