RAY COOK
Ray leads PTG Consulting’s Transport Advisory team in Western Australia and brings over 30 years of international experience in traffic, transport, and safety engineering. His career spans Australia, New Zealand, the UK, Middle East, and Asia, where he has delivered a wide range of transport projects across both urban and infrastructure settings.
JAMES RAYNER
James is an Environmental Engineer with over 17 years of experience spanning mine and asset closure, contaminated land remediation, decommissioning, and waste management. His expertise covers the full asset life cycle from early-stage feasibility and operations through to end-of-life planning and repurposing.
RICCARDO DIVITA
Riccardo is an skilled Hydrogeologist with broad experience in groundwater resource exploration and environmental monitoring. He is highly skilled in environmental sampling and monitoring techniques for soil, groundwater, surface water, and vapour, and is experienced in preparing environmental assessments, management plans, and technical reports.
ALEX PETTY
Alex is a Chartered Geotechnical Engineer with over 20 years of international experience across the UK, Australia, South America, and New Zealand. He is responsible for leading major geotechnical projects, overseeing multi-million dollar programs, managing teams, and driving business development and tendering efforts.
JUSTIN TAING
Justin leads our local geotechnical team and oversees all aspects of project delivery, team development, and business performance across the region. With a strong foundation as both a geotechnician and geotechnical engineer, Justin brings hands-on expertise and leadership to every stage of geotechnical investigation, testing, and reporting.
HARRISON HUGHES
Harrison is a skilled structural engineer, experienced in designing and managing successful projects. He is dedicated to building strong client relationships, continually setting new benchmarks for innovation and quality.
CRAIG GRAPES
Craig is an environmental specialist with 13 years of experience in contaminated site assessment, remediation, and waste and hazardous materials management. He has worked across consulting and resource industry roles, delivering projects from planning through to closure.
ALAN FOLEY
Alan is a Senior Principal Scientist with over 19 years of experience in environmental consulting and analytical chemistry. He specialises in acid sulfate soil (ASS) and contamination assessments, groundwater monitoring, and remediation planning for residential and infrastructure projects.
GERARD EDWARDS
Gerard has 20 years’ consulting experience and has worked on hundreds of mine site, infrastructure and urban development projects. Gerard specialises in stormwater drainage design, flood modelling, Water Sensitive Urban Design (WSUD), feasibility assessments, strategic planning, report writing, project management and obtaining agency approvals.
AARON O’MALLEY
Aaron is a senior engineering professional with over 25 years of experience in geotechnical, construction, and design engineering. He has led major infrastructure and containment projects across road, rail, earthworks, and storage sectors, and has overseen more than 4.5 million square metres of geosynthetic liner installations.











