Ventura City Fire units were dispatched to a report of a vegetation fire in the area of Peninsula St. and Harbor Blvd. Emergency personnel responded and arrived to find a growing fire in an encampment area and nearby vegetation that was best accessed from the southbound lanes of the 101 freeway, south of Seaward Ave. Fire crews made an aggressive attack on the fire and prevented it from spreading to a nearby eucalyptus windrow. The fire was contained and completely extinguished within an hour. CHP units were on scene to assist with needed traffic control on the freeway. The cause was determined to be an unattended cooking fire in the encampment.