S. L. Williamson Company, Incorporated
Charlottesville,
Virginia
View Accreditation Certificate
Kimberly
Holloway
1230 River Road
Charlottesville
,
Virginia
22901
Phone: (434) 295-7623
Fax:
kholloway@slwilliamson.com
http://www.slwilliamson.com
Quality Management System - accredited since 1/29/2013
R18, D3666 (Aggregate), D3666 (Asphalt Mixture)
Asphalt Mixture - accredited since 1/29/2013
R30, R47, R97, T30, T166, T209, T269, T283, T308, T312, T329, T355, D979, D2041, D2726, D3203, D3549, D4867, D5444, D6307, D6925
Aggregate - accredited since 12/15/2015
R76, R90, T11, T27, T37, T84, T85, T176, T255, T304, C117, C127, C128, C136, C566, C702, C1252, 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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