The California Department of Transportation (Caltrans), which had said it would spray herbicides along Highway 84 west of Skyline Boulevard on March 17 and March 24, now says the job was completed in one day and has cancelled the second spray date.
Caltrans spokesperson Allyn Amsk said on March 19, "herbicide spraying was completed on Tuesday."
Caltrans had said it planned to spray between Skyline Boulevard and Stage Road, about one mile east of Highway 1, on the westbound side of 84 (also known as La Honda Road), with no spraying between Hildebrand and Pescadero roads.
Local residents, who have formed a group called "Protect Our Watershed," have protested Caltrans' spraying, saying they fear it will pollute local water sources and harm the health of local residents and others who use the roads, such as cyclists, and animals who come in contact with the spray.
They have asked Caltrans to honor San Mateo County's 2012 ban of broadcast spraying of herbicides everywhere on county property except at its two airports.
The group has a petition at Change.org, which had 233 signatures as of March 19.
Caltrans spokeswoman Gidget Navarro earlier said the herbicide spraying takes place only once a year. She issued a statement from Caltrans saying the state agency would continue spraying because Caltrans could not safely mow the weeds that needed to be removed for safety purposes.
Caltrans does not spray herbicides in several other counties where it had been asked to use alternative weed removal methods.