Howell Asphalt Company
Effingham,
Illinois
View Accreditation Certificate
Adam
Probst
600 E Rickelman
Effingham
,
Illinois
62401
Phone: (217) 258-5315
Fax: (217) 347-7504
aprobst@howellco.com
http://howellco.com
Quality Management System - accredited since 7/23/2018
R18, D3666 (Aggregate), D3666 (Asphalt Mixture)
Asphalt Mixture - accredited since 7/23/2018
R30, R35, R47, T30, T166, T209, T269, T308, T312, T324, T329, D3549, D4867
Aggregate - accredited since 7/23/2018
R76, T11, T27, T84, T85, T100 (Mineral Filler)
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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