Crews continue to work Monday to contain and recover diesel fuel from a spill near Towson, but officials said less fuel spilled than had been initially estimated.

Hazmat crews responded to the Baltimore County Detention Center on the 700 block of Bosley Avenue on Sunday morning after a reported fuel spill. A generator at the detention center was leaking over the weekend, according to a news release.

State and county officials originally said that nearly 6,000 gallons had entered the waterway at Long Quarter Branch, a tributary of the Loch Raven Reservoir. Now, officials said some fuel may have remained in a holding tank beneath the generator or in the drainage system.

“Responders are examining these locations and reconciling the amounts before determining how much reached Long Quarter Branch,” according to an update Monday. Crews are also inspecting underground storm drainage with a camera and walking along accessible portions of the Long Quarter Branch to search for fuel.

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There were no impacts to wildlife, residents or local drinking water, said Jay Apperson, a spokesperson for the Maryland Department of the Environment, which responded to the spill on Sunday. Those with respiratory conditions should avoid the area, he said, and people are urged to stay away from any water with diesel scent or a visible sheen.

The fuel did not reach water system pipes, according to a news release from Baltimore County officials. The county has an FAQ about the spill available for residents.