The Michigan Department of Transportation has revised the requirements for Aggregate Inspection Certification. Beginning in 2013, two different levels of aggregate inspection training and certification will be offered, Aggregate Inspection Certification Level One and Aggregate Inspection Certification Level Two, see descriptions below. Technicians that are currently Certified for Aggregate Inspection are eligible to enroll in Aggregate Inspection Level Two. Technicians that are NOT currently Certified for Aggregate Inspection are required to complete the Aggregate Inspection Level One Training before enrolling into the Aggregate Inspection Level Two Training. The MDOT is currently drafting a Construction Advisory (December 2012) to clarify the pre-qualification requirements for consultants, producers, and local agencies. Please contact our office by phone; 231-591-5826, or by email; firstname.lastname@example.org, with any questions about this change in the Aggregate Certification requirements.
To download the 2013 Aggregate Manuals:
Technicians applying to take the certification courses and examination should have experience and/or working knowledge of the listed course topics before undertaking the examination. Basic math skills in the use of fractions, decimals, ratios, and percentages are also required. The successful completion of Aggregate Inspection Level One or the Michigan Aggregate Inspection Certification (issued before 2013) is required before enrollment into the Aggregate Inspection Level Two Training.
Aggregate Inspection Certification Level One
This three day training course satisfies the requirements of the Michigan Department of Transportation and the Federal Highways Administration for technicians involved in aggregate sampling, washing, sieving, and determining crush content of aggregates for quality control during aggregate production and placement. Level One Certification is required for technicians inspecting road gravels and fine aggregates.
Aggregate Inspection Certification Level One Learning Outcomes Include:
Endorsement B – Sieving and Washing
Endorsement C – Crush Content
All learning outcomes achieved in this Level One Certification include the following:
Aggregate Inspection Level One Training and Certification Fee $615.00 (at Ferris Campus)
To register for Aggregate Level 1, please click here
Aggregate Inspection Certification Level Two
This four day training course satisfies the requirements of the Michigan Department of Transportation and the Federal Highways Administration for technicians involved in determining the deleterious content, flat and elongated content, coarse aggregate specific gravity and absorption, fine aggregate specific gravity and absorption, un-compacted void content, and LA Abrasion testing of aggregates for quality control during aggregate production and placement. The aggregate technician enrolling in this course should have at least three years of practical experience performing aggregate testing in a quality control laboratory. Level Two Certification is required for technicians inspecting concrete aggregates and asphalt aggregates.
Aggregate Inspection Certification Level Two Learning Outcomes Include:
All learning outcomes achieved in this Level Two Certification include the following:
Aggregate Inspection Level Two Training and Certification Fee $765.00 (at Ferris Campus)
To register for Aggregate Level 2, please click here
Aggregate Sampling Certification – Endorsement A
This one day training course satisfies the requirements of the Michigan Department
of Transportation and the Federal Highways Administration for technicians involved
in the sampling of aggregates for quality control tests during aggregate production
and placement. This class is only if you need endorsement A. If you are signed up for the Aggregate
Level 1 Re-certification, you do not need to take this class as well. If you have
questions about this, please call our office.
Aggregate Sampling Learning Outcomes Include:
The Aggregate Sampling Technician earning a score above 80% on the written exam and a score above 90% on the practical exam will be certified to sample aggregates for five years.
Aggregate Sampling Training and Certification Fee $265.00 (at Ferris Campus)
To register for Aggregate Sampling, please click here
The Board of Examiners shall administer an examination for certification. The examination is composed of two parts:
Part 1 - Open Book Written examination
Minimum Score 80%
Part 2 - Practical examination
The practical exam candidates must demonstrate their competency in meeting aggregate testing standards. The candidate is monitored while completing the actual field tests, using the proper methods, procedures and documentation for the specified aggregate tests.
Applicants failing any part of the exam will be allowed to retake that portion of
written or practical. However, if an applicant fails a second time, the entire course will
need to be repeated. Options for retaking exams will be explained at the notification of
failure. All retests must be completed within thirty days and participants will be responsible to pay $150 for a written exam retake and $250 for a practical exam retake.
Recertification is required every five years. It is the responsibility of the practicing
technician to maintain an active certification. For recertification, the technician
must pass both a written and practical examination similar in format to the original
certification tests. Failure to achieve a passing score will require the candidate to retake
the failed portion of the exam, written or practical. A fee will be charged on all retests.
Failure to pass a second time will require the candidate to attend the entire certification
course. If a Certified Aggregate Technician fails to become recertified from the
date of certificate expiration, at a minimum, the refresher course must be taken to
The refresher course includes a one day review of test methods and a written examination, followed on the second day by the practical exam. The refresher course gives technicians an opportunity to review the certification test requirements, to be provided with updated MDOT regulations. The refresher course is limited to individuals who have already received Aggregate Technician Certification. The re-certification course does not allow sufficient time for technicians to practice test methods and reports. Previously certified technicians that need to practice test methods before the practical exam should enroll in the full 3 day course.
Cost: $415 each session (at Ferris Campus)
To register for re-certification please click here