A waste oil spill Friday afternoon on the Pt. Reyes-Petaluma Road has shut down a portion of the road, Marin County fire officials said.
The incident occurred when a hazardous waste truck carrying 5,000 pounds of recycled oil lost control on a curve and veered off the road in the 5900 block Pt. Reyes Road.
About 100 pounds spilled and crews were working Friday to mop up the spill, including building an earthen dam to stop the flow of the waste oil on the pavement and the side of the road.
The incident occurred near McEvoy Ranch, although it was not immediately clear whether the oil was from the facility.
As of 2 p.m., about eight miles of Point Reyes-Petaluma Road were closed to traffic between Hicks Valley and the southern area of Petaluma.
The road is expected to be closed until at least 4pm. No injuries were reported.
Four engine companies from Marin County Fire were at the scene with two chief officers. Petaluma Fire and Novato Fire were assisting.