Dr Petrozzi has specialist experience in source-and-cause matters including source identification and source attribution across a wide range of contaminants, industries and environmental settings. His recent work has focused on the application of environmental geostatistics and 2D/3D geostatistical modelling to quantify the origin, mass and extent of impacts from single, multiple, distributed and diffuse sources. His PhD on contaminant transport and attenuation, undertaken in collaboration with the Australian Nuclear Science and Technology Organisation (ANSTO) and Waste Service NSW, provides a sound research foundation in contaminant dynamics. He has since applied a range of methods to complex contamination problems involving PFAS, hydrocarbons, chlorinated compounds, metals, landfill leachate and hazardous ground gases, across industry, government and the Courts for more than 25 years. He is a Certified Environmental Practitioner (No. 1176) and an accredited Site Contamination Specialist (No. SC40121).