Associated Soils Engineering, Inc.
Signal Hill,
California
View Accreditation Certificate
Lawrence
Chang
2860 Walnut Avenue
Signal Hill
,
California
90755
Phone: (562) 426-7990
Fax:
lchang@associatedsoils.com
https://http://www.associatedsoils.com
Quality Management System - accredited since 12/30/2003
R18, C1077 (Concrete), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil)
Asphalt Mixture - accredited since 12/29/2005
T275, D1560 (Stability), D1561, D2726
Soil - accredited since 12/29/2005
D698, D1140, D1557, D2216, D4318
Aggregate - accredited since 12/29/2005
C40, C117, C127, C128, C566, C702, D2419
Concrete - accredited since 12/30/2003
C31 (Cylinders), C39, C138, C143, C172, C173, C231, C511, C617 (6000 psi and below), 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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