Yeh and Associates, Inc.
Colorado Springs,
Colorado
View Accreditation Certificate
Joe
DeHeart
627 Elkton Drive
Colorado Springs
,
Colorado
80917
Phone: (719) 434-1643
Fax:
jdeheart@yeh-eng.com
http://www.yeh-eng.com
Quality Management System - accredited since 2/8/2018
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 9/16/2020
R47, T30, T166 (Cores), T209, T308, T329, T355, D2726 (Cores), D2950, D5444, D6307
Soil - accredited since 9/16/2020
R58, T89, T90, T99, T180, T265, T310, D421, D698, D1140, D1557, D2216, D4318, D6938
Aggregate - accredited since 6/2/2020
R76, R90, T11, T27, T112, T255, C117, C127, C128, C136, C142, C566, C702, D75
Concrete - accredited since 2/8/2018
M201, R60, R100 (Cylinders), T22, T119, T121, T152, T309, C31 (Cylinders), C39, C138, C143, C172, 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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