Michigan’s Attorney General Dana Nessel recently announced that two technicians, formerly responsible for the maintenance and calibration of hundreds of breath testing devices used throughout Michigan, have been charged with multiple felony counts for allegedly falsifying records. Their names are Andrew Clark and David John.
Mr. Clark and Mr. John were both “Class IV” operators of the DMT. Class IV is the highest of the four operator classes, and this level of certification allows the operator to perform 120-day inspections. During the 120-inspection the operator checks for linearity and if problems arise, it is possible for the inspector to re-calibrate the DMT. If done improperly, this could result in inaccurate breath test results, wrongful DUI arrests and wrongful DUI convictions. The criminal cases against them allege that Mr. Clark and Mr. John committed forgery in producing false documents indicating, among other things, that they had performed 120-day inspections when none had occurred.
The breath test device used to test drivers arrested for DUI in Michigan is called the DataMaster DMT. Michigan currently has more than 200 DMTs in service, and all of them are serviced by 3 technicians. The State was essentially divided in half north to south, creating an Eastern and Western side each of which was handled by a separate technician. The northern part of the State, including the upper peninsula, was handled by a third operator.