NORTH ANDOVER — Between 700 and 800 gallons of oil spilled into Mosquito Brook on Monday afternoon when a delivery truck overturned on Foster Street, Deputy Chief Graham Rowe of the North Andover Fire Department said.
“When we got there we noticed a tear in the tank and fuel was leaking down the road,” he said.
The driver told firefighters his truck, which holds 3,000 gallons when full, was down to about 25% capacity when the rollover happened, Rowe said.
While the driver was being treated for minor injuries, firefighters lowered the hazmat booms and created natural barriers to stem the flow of oil into the water.
“At that point, we requested more devices, called the chief, and informed the DEP (Department of Environmental Protection),” Rowe said. “They immediately dispatched their crews.”
The truck’s owners, Hilton Oil Company, also contacted an environmental cleanup company, Clean Harbors Environmental and Industrial Services, Rowe said.
Clean Harbors responded Monday afternoon and was still working at the spill site Wednesday morning, at the point where Foster Street crosses the creek, near an intersection with Bridges Lane.
The smell of oil was potent from the road, and there was a large puddle of oil in the ice-covered surface of the creek on the west side of the road. Several workers concentrated their efforts under the east side of the road, while two men worked on the ice about 50 meters away.
Mosquito Brook crosses 48 acres of conserved wetlands that were donated to the city in 1971 and eventually joins the Ipswich River at Topsfield, according to the Friends of North Andover Trails website.
“The cause of the crash is still undetermined and is being investigated,” said Detective Lt. Eric Foulds of the North Andover Police Department.