Duties also include, supervision and mentorship of the laboratory staff, maintaining proper and complete laboratory data, lab certification and maintenance, maintain/purchase equipment, responsible for budget control, work flow and clear communications with the Project Manager regarding all aspects of the laboratory operations including providing of neat and orderly project documentations. Required Certifications: ACI certifications as follows: Concrete Strength Testing Technician, Concrete Field Testing Technician – Grade I, Aggregate Testing Technician – Level 1, Aggregate Base Testing Technician, Aggregate Testing Technician – Level 2, and.