Granite Rock Company
South San Francisco,
California
View Accreditation Certificate
Thanh
Ngo
1321 Lowrie Ave.
South San Francisco
,
California
94080
Phone: (650) 869-3319
Fax:
tngo@graniterock.com
http://https://www.graniterock.com/location/south_sf
Quality Management System - accredited since 7/8/2013
R18, D3666 (Aggregate), D3666 (Asphalt Mixture)
Asphalt Mixture - accredited since 7/8/2013
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 7/8/2013
R76, R90, T11, T27, T37, T84, T85, T176, T255, C117, C127, C128, C136, C566, C702, D75, D546, 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.
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