Certerra Southwest, LLC
Tucson,
Arizona
View Accreditation Certificate
Randall
Harris
3480 South Dodge Boulevard
Tucson
,
Arizona
85713-5435
Phone: (520) 748-2262
Fax:
rharris@certerra.com
http://www.wt-us.com
26-1449 : Accreditation has been suspended for Asphalt Mixture standard(s) T312, D6925
26-5719 : Accreditation has been suspended for Aggregate standard(s) T27, C136
26-5719 : Accreditation has been suspended for Quality Management System standard(s) C1077 (Aggregate)
Quality Management System - accredited since 9/1/1995
R18, C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil)
Asphalt Mixture - accredited since 9/1/1995
R47, R68, T30, T166, T209, T245, T269, T275, T287, T308, T329, D1188, D2041, D2726, D3203, D3549, D4125, D5444, D6307, D6926, D6927
Soil - accredited since 9/1/1995
R58, R74, T88, T89, T90, T99, T100, T134, T180, T191, T193, T217, T265, T288, T289, T310, D421, D422, D558, D698, D1556, D1557, D1883, D2216, D2487, D2488, D2844, D4318, D4718, D4829, D4944, D6938
Aggregate - accredited since 9/1/1995
R76, R90, T11, T19, T21, T84, T85, T96, T104, T112, T113, T176, T255, T304, T335, C29, C40, C88, C117, C123, C127, C128, C131, C142, C535, C566, C702, C1252, D75, D2419, D4791, D5821
Concrete - accredited since 9/1/1995
M201, R39, R60, R100 (Beams), R100 (Cylinders), T22, T24 (Testing Drilled Cores of Concrete), T97, T119, T121, T152, T196, T231 (7000 psi and below), T309, C31 (Beams), C31 (Cylinders), C39, C42 (Testing Drilled Cores of Concrete), C78, C138, C143, C172, C173, C192, C231, C511, C617 (7000 psi and below), C1064, C1140, C1231 (7000 psi and below), C1542, C1604
Masonry - accredited since 5/29/2008
C140 (Concrete Masonry Units) (Sampling and Testing Concrete Masonry Units and Related Units)
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C780 (Annex 1) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Consistency by Cone Penetration)
C780 (Annex 6 - Cubes) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cubes)
C1019 (Sampling and Testing Grout)
C1552 (Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing)
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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