Kleinfelder, Inc.
Tulsa,
Oklahoma
View Accreditation Certificate
Steve
Symsack
12727 East 61st Street
Suite A
Tulsa
,
Oklahoma
74146
Phone: (918) 627-6161
Fax: (918) 627-6262
ssymsack@kleinfelder.com
https://http://www.kleinfelder.com
Quality Management System - accredited since 2/1/2002
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 2/1/2002
R47, R68, T30, T166, T209, T245, T269, T308, T312, T331, D2041, D2726, D3203, D3549, D5444, D6307, D6752, D6925, D6926, D6927
Soil - accredited since 7/10/2003
R58, T88, T89, T90, T99, T134, T180, T193, T208, T265, T310, D421, D422, D558, D698, D1140, D1557, D1883, D2166, D2216, D2487, D2488, D4318, D4718, D6938
Aggregate - accredited since 7/10/2003
R76, T11, T19, T27, T84, T85, T255, C29, C117, C127, C128, C136, C566, C702
Concrete - accredited since 3/1/2002
M201, R39, R60, R100 (Beams), R100 (Cylinders), T22, T24 (Drilling Cores of Concrete), T24 (Testing Drilled Cores of Concrete), T97, T119, T121, T148, T152, T196, T231 (8000 psi and below), T309, C31 (Beams), C31 (Cylinders), C39, C42 (Drilling Cores of Concrete), C42 (Testing Drilled Cores of Concrete), C78, C138, C143, C172, C173, C174, C192, C231, C511, C617 (8000 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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