Professional Service Industries, Inc. - an Intertek Group plc company
Seattle,
Washington
View Accreditation Certificate
Eric
Allen
2500 East Lake Washington Blvd
Special Project - SR520
Seattle
,
Washington
98112
Phone: (503) 260-8871
Fax:
Eric.allen@intertek.com
http://www.PSIUSA.com
Quality Management System - accredited since 12/17/2025
R18
Asphalt Mixture - accredited since 12/17/2025
R47, R97, T30, T166, T209, T269, T308, T312, T329
Soil - accredited since 12/17/2025
R58, T89, T90, T99, T180, T265
Aggregate - accredited since 12/17/2025
R76, R90, T11, T27, T84, T85, T176, T255, T304, T335
Concrete - accredited since 12/17/2025
M201, R60, R100 (Cylinders), T22, T119, T121, T152, T196, T309, C31 (Cylinders), C39, C138, C143, C172, C173, C231, C511, C1064, C1231 (7000 psi and below)
Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.
* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.
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