The amount of such assessment shall constitute a lien against any property for which the assessment has not been paid by the date it is due, as provided in RCW 17.10.240. A notice of lien shall be sent to each owner of such property.

All liens created shall be collected by the Clallam County Treasurer in the same manner as delinquent real property taxes pursuant to RCW 17.10.240(1), if within thirty (30) days from the date of when the owner is sent notice of the lien, including the amount thereof, the lien remains unpaid and an appeal has not been made pursuant to RCW 17.10.180.

All liens created shall bear interest at the rate of twelve (12) percent per annum and such interest shall accrue as of the date notice of the lien is sent to the property owner.