NWCEL Northwest Council of Engineering Labs

Become a
Special Inspector

›› Introduction
›› License Types
›› Types of Work


Inspection Courses

Reinforced Concrete:
›› Batch Plant
›› Concrete II
›› Concrete Intensive
›› Pre/Post-Tension
›› Shotcrete Intro.
›› Shotcrete Recert.

Steel & Welding:

›› Steel & Welding I
›› Steel & Welding II
›› Steel & Welding Intensive

Masonry Inspection

Ultrasonic Technician
›› Certification Program

Magnetic Particle Testing Level II

Special Inspector Certification Renewal

Lateral Framing Special Inspection

Proprietary Anchors Inspection

Plan Reading

›› In-Place Density
›› Embankment and Base
›› Aggregate
›› Asphalt II

WAQTC In-Place Density Technician

WAQTC In-Place Density Technician

Class Dates: Nov 17th
Class Time: 8:00 AM to 4:00 PM
Classroom Location: Lake Washington Institute of Technology (11605 132 nd Ave NE, Kirkland, WA 98034)
Laboratory Training Dates: Nov 18th
Laboratory Training Times: 8:00 AM - 12:00 PM or 12:00 PM - 4:00 PM (to be assigned)
Laboratory Location: AAR Testing Laboratory (7126 180th Ave. NE C101 Redmond, WA)
Written Exam Date: Dec 3rd
Written Exam Time: 8:00 AM or 10:00 AM
Written Exam Location: WSDOT Corson Facility Seattle, WA
Practical Exam Dates: Dec 4th, 6th, 8th, or 9th
Practical Exam Times: TBD (each examinee will be assigned a time slot on one of the exam days)
Practical Exam Location: AAR Testing Laboratory (7126 180th Ave. NE C101 Redmond, WA)

Laboratory (L)
EXAM Written (W)
Performance (P)
T 99 Standard Proctor C W
T 180 Modified Proctor C W
R 75 Family of Curves C, L  
T 272 One Point Proctor C, L W, P
T 255/T 265 Moisture of Aggregate/Soil C, L W, P
T 85 Specific Gravity of Coarse Aggregate C, L  
T 310 Nuclear In-Place Density of Soil/Aggregate C, L W, P
T 209 Theoretical Maximum Density of Asphalt C  
T 166 Bulk Specific Gravity of Asphalt C  
T 355 Nuclear In-Place Density of Asphalt C, L W, P
  • Attendance of training sessions is required prior to taking the written and practical exams.
  • Students must pass the written exam before taking the practical exam.
  • After successfully passing both the written and practical exams, WAQTC certification numbers will be issued by WSDOT.
  • WAQTC certification is accepted in the following states: AK, CO, HI, ID, NM, OR, TX, UT, and WA

You will receive an In-Place Density manual with the WAQTC FOP procedures for the test methods listed above. You can also download these test procedures at www.waqtc.org

Instructor:  Chris Christensen, PE. Senior Project Manager, AAR Testing. Chris is a registered professional engineer in Washington, Alaska, Nevada and Utah. He has been a WAQTC examiner for the past 13 years. He has worked on dozens of airport and highway projects during his 25 years of experience in the construction testing and inspection industry.


Module Member Member Exam only * Non-Member Non-Member Exam only *
In-Place Density Technician $400.00 $225.00 $480.00 $250.00
Embarkment & Base Technician $400.00 $225.00 $480.00 $250.00
In-Place Density Technician AND
Embarkment & Base Technician
$450.00 $275.00 $540.00 $300.00

* Challenging an exam without completing the classroom instruction is allowed, but is strongly discouraged unless the technician is renewing their certification.

Registration:  Please email Chris Christensen at chris@nwcel.org with student name and company affiliation. Class size is limited to a maximum of 24 students.