Twining, Inc.
Ventura,
California
View Accreditation Certificate
Jeff
Tawakoli
1879 Portola Road
Suite G
Ventura
,
California
93003
Phone: (805) 644-5100
Fax: (805) 644-5179
jtawakoli@twininginc.com
http://www.twininginc.com
Quality Management System - accredited since 7/6/2009
R18, C1077 (Aggregate), C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil)
Asphalt Mixture - accredited since 2/21/2013
T275 (Cores), T329, D2041, D2726 (Cores), D2950, D6307
Soil - accredited since 6/11/2010
T100, D421, D558, D698, D1140, D1557, D1633, D2216, D4318, D6938
Aggregate - accredited since 7/6/2009
C40, C117, C127, C128, C136, C566, C702, D2419, D3744
Concrete - accredited since 7/6/2009
C31 (Beams), C31 (Cylinders), C39, C78, 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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