Chapter 7.42 LIEN AND ASSESSMENTS OF COSTS AND EXPENSES INCURRED IN PUBLIC NUISANCE ABATEMENTS 7.42.010 PURPOSE. 7.42.020 COSTS OF ABATEMENT. 7.42.030 NOTICE OF HEARING ON COSTS AND ASSESSMENT. 7.42.040 HEARING ON COSTS AND ASSESSMENT. 7.42.050 COLLECTION ON TAX ROLL.