Oceano, CA -- A San Luis Obispo County court judge has thrown out a lawsuit by the Sierra Club that could have made a portion of the Oceano Dunes off limits to off-road vehicles.  

The environmental group wanted the Parks and Recreation Department to abide by a County policy that prohibits off-road vehicles on 580 acres of the Dunes. The Local Coastal Plan written in 1982 says off road vehicles are not allowed on a portion of the Oceano Dunes between the entrance on the north and main riding area on the south.

The club vows to appeal the ruling.