Item 19 - Agreement for Pavement Managment Program Update

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o' CTA &GO Countywide Pavement Management Plan Guidelines Local Tax Dollars at Work Any findings that may compromise data integrity and consistency should be discussed and corrected. Examples of these include differences in survey methods from the last update (e.g. changing from windshield to walking surveys), collecting additional distress types and unique situations that may not lend themselves to existing condition survey procedures (e.g. gap -graded mixes, edge cracking with unpaved shoulders). Prior to performing any work, local jurisdictions must review the QA/QC plan with inspection personnel. A copy of the QA/QC plan must be submitted to OCTA together with the PMP certification. Re -inspections As part of any QA/QC process, it is essential to re -inspect portions of the network with different personnel than those performing the condition surveys. Re -inspections should be performed within one month of the original date of collection as pavement data will change with time, and during the winter, may change very rapidly. The data to be re -inspected should include distress types, severities and quantities collected during the survey. At least 5% of the pavement sections should be re -inspected. The selected sections for re -inspections should be representative of the local agency's network. This should include sections from: • All functional classifications (i.e. MPAH and residential/local) All surface types (i.e. AC and PCC) • Entire range of pavement conditions ( i.e. good, fair, poor) • All significant changes in PCI (i.e. sections with more than ±10 PCI points a year with no plausible explanations should be targeted for re -inspections) • All inspectors • Different geographical areas Acceptability Criteria In general, inspectors should identify distress types accurately 95% of the time. Linear measurements should be considered accurate when they are within ±10% if re -measured, and area measurements should be considered accurate when they are within ±20% if re -measured. For the data to be acceptable, 90% of the re -inspected sections must be within ±10 PCI points. If the results of the re -inspections do not meet the above criteria, all inspections should be immediately halted and any differences should be identified and discussed. Corrective actions should be taken immediately. The local jurisdiction should then perform re -inspections of an additional 5% of the pavement sections. Effective March 2024 2-6