Group Delta Consultants, Inc.
San Diego,
California
View Accreditation Certificate
Jan
Krehbiel
9245 Activity Road
Suite 103
San Diego
,
California
92126-4442
Phone: (858) 536-1000
Fax:
jan.krehbiel@nv5.com
http://www.groupdelta.com
Quality Management System - accredited since 4/15/2002
R18, C1077 (Aggregate), C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil), E329 (Sprayed Fire-Resistive Material)
Asphalt Mixture - accredited since 4/15/2002
R47, T275, D979, D1560 (Stability), D1561, D2041, D2726, D2950, D3203, D3549, D5444, D6307, D6926, D6927
Soil - accredited since 4/15/2002
D421, D422, D698, D1140, D1556, D1557, D1883, D2166, D2216, D2435, D2844, D3080 (3000 lb/ft-sq or Greater Normal Stress), D4318, D4546, D4718, D4829, D6913, D6938
Aggregate - accredited since 4/15/2002
C40, C88, C117, C127, C128, C136, C566, C702, D75, D2419, D3744
Sprayed Fire-Resistive Material - accredited since 8/25/2011
E605
Concrete - accredited since 6/28/2006
C31 (Beams), C31 (Cylinders), C39, C42 (Testing Drilled Cores of Concrete), C78, C138, C143, C172, C173, C174, C231, C511, C617 (7000 psi and below), C1064, C1140, C1231 (7000 psi and below), C1542, C1604
Masonry - accredited since 12/9/2024
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C1019 (Sampling and Testing Grout)
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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