Materials Lab
- Contacts
- TL-543
- NEW! Section 39, HMA "Hot Mix Asphalt" and Associated SSPs
- Rubberized Hot Mix Asphalt
- HMA and Concrete Plant Certification CTM 109
- Independent Assurance Program (IAP)
- Structural Section Request Information
- Check List for Construction Sampling
- Pavement Deflection Study
- Pavement coring
- Resistance to Deformation of Aggregates and Soils Under Traffic Loads (R-Value)
- Culvert Studies
- Certified Materials Testers List
- Materials Delivery Timeline (PDF 208K)
Laboratory Policies and Procedures
- 2006 Standard Specifications
- 2006 Standard Plans
- 2006 Standard Specifications Digest of Major Changes
- California Test Methods
- Lab Procedures
- Highway Design Manual
- Construction Manual
- Acceptance Testing Turnaround Times
- Aggregate Process Testing
- HMA Acceptance Testing
- Lab Workload Priority
- Correcting Errors in TL-101s and/or Submitted Samples
- Disposal of Test Samples
- Nuclear Density and Asphalt Gauge Procedures
- Laboratory Safety Manual
District 01 Field Labs
Independent Assurance Program
For Caltrans Qualification of Laboratories and Testers
The purpose of the Independent Assurance Program (IAP) is to provide departmental guidelines for the Independent Assurance requirements on roadway construction projects. The IAP Manual, available from any IAP Staff, outlines the procedures and roles for statewide uniformity in certification of Independent Assurance staff, Caltrans Qualification of Testers, test equipment calibration, and management of related records.
Independent Assurance Manual (PDF 2.2M)
The Independent Assurance Manual replaces the "Quality Assurance Program Manual" (1994).
Regulatory Requirements
The implementation and enforcement of the Independent Assurance Program (IAP), in conjunction with the Construction Program, ensures that the Department is in compliance with the Federal Highway Administration's (FHWA) Federal Aid Policy Guide, 23 Code of Federal Regulations, Part 637, which requires that each State Highway Agency (SHA) develop and adhere to a quality assurance program. This program together with a rigorous quality assurance inspection, sampling, and testing program ensures that the materials and workmanship incorporated into each Caltrans and National Highway System (NHS) construction project are in conformity with the requirements of the approved plans and specifications. See appendix D of the IAP Manual for the complete text of 23 CFR Part 637.
District 01 IAP Roles and Responsibilities
- Maintain an adequate staff to administer the IA Program at the District level
- Maintain a secure IA location for confidential records and materials
- Qualify, re-qualify and disqualify Caltrans, Public Agency, and Private Sector Testers
- Qualify, re-qualify and disqualify Caltrans, Public Agency, and Private Sector Laboratories
- Maintain records and files in accordance with the IAP Manual
IAP Staff
(707) 445-6374, 445-6375
