Mas-Tek Engineering & Associates, Inc.
Dallas,
Texas
View Accreditation Certificate
Stephen
Mason
10625 Newkirk Street
Suite 800
Dallas
,
Texas
75220
Phone: (972) 709-7384
Fax:
smason@mas-tek.com
http://www.mas-tek.com
Quality Management System - accredited since 4/22/2019
R18, D3740 (Soil), E329 (Soil)
Soil - accredited since 4/6/2021
D558, D698, D1140, D1557, D2216, D4318, D4972, D6938
Aggregate - accredited since 7/15/2026
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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