Granite Rock Company
Redwood City,
California
View Accreditation Certificate
Thanh
Ngo
365 Blomquist Street
Redwood City
,
California
94063
Phone: (650) 869-3319
Fax:
tngo@graniterock.com
http://https://www.graniterock.com/
Quality Management System - accredited since 3/20/2014
R18, D3666 (Aggregate), D3666 (Asphalt Mixture)
Asphalt Mixture - accredited since 3/20/2014
R30, R47, R68, R97, T30, T166, T209, T245, T269, T275, T308, T312, T329, D979, D2041, D2726, D3203, D3549, D5444, D6307, D6925, D6926, D6927
Aggregate - accredited since 3/20/2014
R76, R90, T11, T27, T84, T85, T176, T255, C117, C127, C128, C136, C566, C702, D75, D2419
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.
|