42 Engineering services for building and property condition assessment, facility management, repair and restoration, building instrumentation and monitoring, and environmental consulting in the field of indoor environmental and air quality; technical consulting in the field of indoor environmental and air quality; engineering services in the field of environmental compliance; environmental testing and inspection services; technical air quality monitoring services; consulting services in the field of collection of evidence for forensic purposes; expert witness services in legal matters in the field of building inspection and environmental inspection