Quality Assurance Program - Oregon Department Of Transportation Page 27
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28APPENDIX C
PRODUCT SPECIFIC QC/QA TESTING PLAN
The Quality Assurance Program consists of three distinct sub-programs. The Quality Control
Program, the Verification Program and the Independent Assurance Program. This appendix
provides specific details on how these programs work together to assure specification materials
are incorporated into ODOT projects. It also provides details on specific requirements of each
of the programs for each of the materials, which are utilized on ODOT projects.
In general, contractor’s quality control tests are obtained at the highest frequency. Agency
verification tests are run usually on a frequency of 10% minimum, of the QC testing frequency.
While the Independent Assurance program takes steps to assure the quality of both the QC and
the verification test results.
ODOT will accept materials based on the contractors QC test results only if verified by the
Agency verification testing.
Verification of QC test results will require all of the following
conditions to be met:
1. The Department's testing results show that the material meets the specified quality.
2. The split samples meet Independent Assurance parameters.
3. The Department's Verification test results compare reasonably to the ongoing Quality
.
Control data
If any of the above conditions are not met, an investigation will be conducted by the Project
Managers office to determine whether to reject the material or if the material is suitable for the
intended purpose according to section 150.25 and also what price adjustment might be applied.
See Investigation Criteria for details and requirements.
Step 2 in the above conditions compares the contractor’s test results on the split IA sample to
the agency results. The Independent Assurance Parameters to be used for the comparison are
listed in Table 1 of this appendix.
The following pages detail the Investigation Criteria, Quality Control, Verification and
Independent Assurance requirements for each of the specific materials used on ODOT projects.
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