Michigan Aggregates Association

MDOT Aggregate Source Approval Testing Frequency – Reminder

MAA was recently reminded about MDOT’s frequency of sampling and testing for source approval of aggregates for use on MDOT and federally funded projects.  A May 17, 2012 letter from MDOT to MAA detailing the testing frequency can be found by  clicking here.


If you have any questions, please contact the MAA office at 517-381-1732