California Code, Streets and Highways Code - SHC § 1485

If the encroachment is not denied, but is not removed within five days from and after service or posting of the notice, the road commissioner may remove the encroachment at the expense of the owner or occupant of the land, or the person causing, owning or controlling the encroachment.  The commissioner may recover from the owner, occupant, or person, in an action brought in the name of the county for that purpose, the commissioner's court costs and the expense of removal and also a penalty of three hundred fifty dollars ($350) for each day the encroachment remained after service or posting of the notice, as provided in Section 1496.