Blackburn Consulting
Escondido,
California
View Accreditation Certificate
Sean
Donovan
450 States Place
Escondido
,
California
92029
Phone: (626) 840-9661
Fax:
seand@blackburnconsulting.com
http://www.blackburnconsulting.com
Quality Management System - accredited since 5/28/2026
R18, C1077 (Aggregate), C1077 (Concrete), D3666 (Aggregate), D3740 (Soil), E329 (Aggregate), E329 (Concrete), E329 (Soil)
Soil - accredited since 5/28/2026
D421, D422, D698, D1140, D1556, D1557, D2216, D2435, D2487, D2488, D3080 (3000 lb/ft-sq or Greater Normal Stress), D4318, D4718, D4829, D6913, D6938, D7928
Aggregate - accredited since 5/28/2026
C117, C127, C128, C136, C566, C702, D2419
Concrete - accredited since 6/2/2026
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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