Programs that work for you

"They are rigorous, they’re about making sure our labs, personnel, and test methods conform, that they’re in compliance. They’re independent, not driven by a vendor or a construction company.”

California Department of Transportation

Philip Stolarski, Former Deputy Division Chief, DES-METS & GS 

55+ years of experience
PSP participants
samples shipped per year
laboratory assessments per year
accredited labs


Our commitment to consistently providing products and services that meet our customers’ requirements and needs is demonstrated by the fact that we are currently celebrating over seventeen years of certification to ISO 9001, Quality management systems – Requirements. AASHTO re:source’s quality management system (QMS) is certified to this standard, which is known internationally as the highest standard for quality for all types of organizations. The requirements in ISO 9001 are many and include a strong emphasis on continual improvement. Adhering to and implementing the requirements in this standard have resulted in countless improvements within our organization, many of which directly impact the quality of the services provided to our customers. The scope of our ISO 9001 certification includes our three major programs – the AASHTO Accreditation Program (AAP), the Laboratory Assessment Program (LAP), and the Proficiency Sample Program (PSP).

[View our ISO 9001 certificate.]

In addition to ISO 9001 certification, AASHTO re:source’s Proficiency Sample Program (PSP) has been accredited for ISO/IEC 17043, Conformity Assessment — General requirements for proficiency testing, since 2017. This accreditation requires that we operate our proficiency sample program in accordance with rigorous technical and management system requirements. The technical requirements relate to processes including competency of personnel, equipment performance, homogeneity and stability testing, reporting, and communication with participants. The management requirements relate to processes including document control, purchasing, customer feedback, internal audits, and corrective action.

[View our ISO/IEC 17O43 accreditation certificate.]

Organizational Principles


Our vision is a world in which the public can be confident in the quality and reliability of construction materials testing, inspection, and evaluation.


The mission of AASHTO re:source is to build confidence in the testing, inspection and evaluation of construction materials by elevating quality, encouraging continual improvement, and sharing knowledge.


PACT – Professionalism, Accuracy, Competency, and Timeliness AASHTO re:source is committed to the quality of our products and services by (1) maintaining a professional relationship with our customers, (2) providing accurate products and services, (3) maintaining a competent organization, and (4) providing timely services to our customers.


Respect: We treat our customers, and each other, with respect.

Diversity, Equity, and Inclusion: We are committed to building a diverse staff and maintaining a caring, supportive, and safe environment for all.

Transparency: We are committed to building trust through transparency of our successes, failures, and decisions.

Integrity: We act objectively and do the right thing, always.

Learning: We are passionate about learning and seek to continually improve and innovate.

These principles are applicable to AASHTO re:source staff and programs. AASHTO’s vision and mission statements are included in their 2021-2026 Strategic Plan on the About Us of the AASHTO website.