McDowell and Associates, Inc.
Ferndale,
Michigan
View Accreditation Certificate
Benjamin
Stenzel
21355 Hatcher Ave.
Ferndale
,
Michigan
48220
Phone: (248) 399-2066
Fax: (248) 399-2157
ben.stenzel@mcdowasc.com
http://www.mcdowasc.com
Quality Management System - accredited since 5/12/2010
R18, C1077 (Aggregate), D3666 (Aggregate), D3666 (Asphalt Mixture), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Sprayed Fire-Resistive Material)
Asphalt Mixture - accredited since 5/12/2010
R47, R68, T30, T164, T166, T209, T245, T269, T308, D3549
Soil - accredited since 10/5/2018
T99, T180, T265, T310, D698, D1140, D1557
Aggregate - accredited since 5/12/2010
R76, T11, T21, T27, T84, T85, T96, T255, C117, C127, C128, C136, C535
Sprayed Fire-Resistive Material - accredited since 5/12/2010
E605, E736
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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