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Toggle navigation Home Labs Testers Staff Login -- Home Lab Tester -- Lab Lab Search Tester Tester Search Staff Login -- Statewide Independent Assurance Database (SIAD) -- The Statewide Independent Assurance Database (SIAD) is a web application developed by the California Department of Transportation, Materials Engineering & Testing Services (METS) to allow IA staff the ability to easily submit tester and laboratory information into Caltrans' database via the internet. The SIAD serves as a central repository for statewide Independent Assurance (IA) data pertaining to IA staff, testing personnel, and laboratories. The database provides instant access to statewide IA accreditations, certifications and proficiencies. Project staff no longer needs to rely on paper records, phone calls and emails to verify tester or lab qualification. For more information about the Caltrans Independent Assurance Program (IAP), please see the Independent Assurance Manual and associated documents on the IAP webpage . -- Quick Links Search Labs Search Testers IA Staff List IA Staff List PDF -- Help District Map -- Alternate text if the iframe cannot be rendered -- For concerns with missing or erroneous data, please contact your Independent Assurance personnel Please submit any comments or questions to the SIAD Task Manager: Seree Yenjai seree.yenjai@dot.ca.gov 916-247-1911 Accessibility Information © 2020 by California Department of Transportation (Caltrans)...