Con Edison is cleaning up non-hazardous insulating fluid similar to mineral oil that leaked out of a transmission feeder in Yonkers on April 1.

A portion of an estimated 1,000 gallons of oil passed through a storm drain that has an outfall on Nereid Avenue.

“[Department of Environmental Conservation] spill response is directing the clean-up operation and Con Edison has placed a series of fluid absorbing booms spread across the river from McLean Avenue in Yonkers down to Fordham Road in the Bronx,” Con Edison Spokesperson Alfonso Quiroz told News 12.

He added, "The booms should prevent any significant amount of fluid traveling farther south."

Quiroz also told News 12 that the cleanup should be complete by Friday.

News 12 also reached out the DEC but had not heard back as of Sunday evening.