RGH Geotechnical and Environmental Consultants
Santa Rosa,
California
View Accreditation Certificate
Sean
Flinn
3501 Industrial Drive
Suite A
Santa Rosa
,
California
95403
Phone: (707) 591-5727
Fax:
sflinn@rghgeo.com
https://http://rghgeo.com
Quality Management System - accredited since 10/23/2007
R18, C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Soil)
Asphalt Mixture - accredited since 8/23/2012
D1560 (Stability), D1561, D2041, D2726, D3203, D3549, D5444, D6307, D6926, D6927
Soil - accredited since 10/23/2007
D421, D422, D1557, D2216, D2850, D4318, D4829
Aggregate - accredited since 8/20/2013
C117, C127, C128, C136
Concrete - accredited since 5/11/2021
C31 (Cylinders), C39, C138, C143, C172, C231, C511, C1064, C1231 (7000 psi and below)
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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