Johansen and Tuttle Engineering Inc
Castle Dale,
Utah
View Accreditation Certificate
Lynn
Tuttle
100 East 90 South
Castle Dale
,
Utah
84513
Phone: (435) 749-0144
Fax:
lynnlori2004@yahoo.com
http://jandtengineering.com/
Quality Management System - accredited since 12/15/2001
R18, C1077 (Concrete), D3666 (Aggregate), D3740 (Soil)
Asphalt Mixture - accredited since 12/15/2001
R97, T30, T308, T355
Soil - accredited since 12/15/2001
R58, T89, T90, T99, T180, T265, T310, D421, D698, D1557, D2216, D4318, D6938
Aggregate - accredited since 12/15/2001
R76, R90, T11, T27, T255, C117, C136, C566, C702, D75
Concrete - accredited since 7/29/2003
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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