Shannon & Wilson, Inc.
Seattle,
Washington
View Accreditation Certificate
Dan
Brenneman
400 North 34th Street
Suite 100
Seattle
,
Washington
98103
Phone: (206) 695-6921
Fax:
daniel.brenneman@shanwil.com
http://www.shannonwilson.com
Quality Management System - accredited since 4/24/2008
R18, D3740 (Soil)
Soil - accredited since 4/24/2008
R58, T88, T89, T90, T99, T180, T265, T288, T289, D421, D422, D698, D854, D1140, D1557, D2166, D2216, D2435, D2487, D2488, D2850, D2974, D4318, D4767, D5084, D6913, D7928
Rock - accredited since 6/6/2013
D5731
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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