OHE is a multidisciplinary firm that specializes in providing high quality services in the field of environmental, occupational hygiene and building science consulting. The many consulting services offered by OHE include occupational and environmental hygiene, environmental site assessments and remediation, building condition assessments and restoration design, tendering and management, asbestos and building hazardous materials management and control, indoor air quality, building microbiological contamination (mould) management and control, environment and health and safety training and the development and implementation of environmental and health and safety management systems. Additional specialty engineering services include risk management, forensic engineering, confined space management, water/wastewater engineering, pollution prevention, auditing, structural, pre-construction surveys, building envelope (walls, windows/doors, roofs) performance investigation.