Yeh and Associates, Inc.
Durango,
Colorado
View Accreditation Certificate
Fred
Hampton
570 Turner Drive
Suite D
Durango
,
Colorado
81303
Phone: (970) 382-9590
Fax:
fhampton@yeh-eng.com
http://www.yeh-eng.com/
Quality Management System - accredited since 5/8/2019
R18, D3666 (Asphalt Mixture), D3740 (Soil), E329 (Asphalt Mixture), E329 (Soil), E329 (Sprayed Fire-Resistive Material)
Asphalt Mixture - accredited since 5/8/2019
R47, R97, T30, T166 (Cores), T209, T269, T287, T308, T329, D979, D2726 (Cores), D3203, D4125, D5444, D6307
Soil - accredited since 5/8/2019
R58, T88, T89, T90, T99, T100, T180, T265, T288, T289, T310, D421, D422, D698, D1140, D1557, D2216, D2487, D2488, D4318, D4546, D6938
Aggregate - accredited since 5/8/2019
R76, R90, T11, T27, T84, T85, T176, T255, T304, T335, C117, C127, C128, C136, C566, C702, C1252, D75, D2419, D4791, D5821
Sprayed Fire-Resistive Material - accredited since 1/6/2022
E605, E736
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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