Independent assurance program (IAP)
Double checks to make sure the testers and test equipment are working correctly. This includes contractor, state, county, city, and consultant staff and test equipment.
IAP is done by district and central laboratory personnel.
IAP double checks the testing of:
- Hot-mix asphalt mix, pavement, and ride quality.
- Portland cement concrete mix, pavement, and ride quality.
- Binder sampling.