Granite Construction Company
Yakima,
Washington
View Accreditation Certificate
Ethan
Clayton
80 Pond Road
Yakima
,
Washington
98901
Phone: 3607132819
Fax:
ethan.clayton@gcinc.com
http://https://www.graniteconstruction.com/
Quality Management System - accredited since 4/19/2013
R18, D3666 (Aggregate), D3666 (Asphalt Mixture)
Asphalt Mixture - accredited since 4/19/2013
R30, R35, R47, R97, T30, T166, T209, T269, T275, T305, T308, T312, T329, T355, D979, D2041, D2726, D2950, D3203, D3549, D4867, D5444, D6307, D6390, D6925, D6931
Soil - accredited since 9/18/2015
R58, T89, T90, T99, T180, D421, D698, D1557, D4318
Aggregate - accredited since 4/19/2013
R76, R90, T11, T19, T27, T84, T85, T100 (Mineral Filler), T112, T176, T255, T304, T335, C29, C117, C127, C128, C136, C142, C566, C702, C1252, D75, D2419, D4791, D5821
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 8/11/2026. Please visit https://aashtoresource.org for current accreditation status.
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