If the owner, lessee or occupant of such premises does not abate the nuisance and remove the vehicle or parts thereof within ten days after notice mentioned in Section 6.80.080 of this chapter, a public hearing shall be held on the question of abatement and removal of the vehicle or parts thereof as an abandoned, wrecked, dismantled or inoperative vehicle and the assessment of the administrative costs and the cost of removal of the vehicle or part thereof against the property on which it is located. Notice of hearing shall be mailed at least ten days before the hearing by certified mail, with a five day return requested, to the owner of the land as shown on the last equalized County assessment roll and to the last registered and legal owner of record unless the vehicle is in such condition that identification numbers are not available to  determine ownership. If any of the foregoing notices are returned undelivered by the United States Post Office, the hearing shall be continued to a date not less than ten days from the date of such return. The failure to receive the mailed notices required herein shall not affect in any manner the validity of any abatement proceeding hereunder providing a notice of the proceeding has been posted on the vehicle or parts thereof sought to be removed, at least ten days before the hearing. (Ord. 2631 § 1 (part); January 21, 1969.)