Cheryl Halim is an environmental engineer with over 15 years of experience. She has managed various sized environmental assessment, remediation, landfill, risk assessment and site audit projects. Cheryl has also assisted contaminated site auditors in undertaking many contaminated land site audits in various states in Australia. She also serves as one of Zoic's in-house risk assessment specialists. Some of Cheryl's areas of expertise include: environmental assessment, remediation, landfill, risk assessment, site audit, clandestine drug laboratory, asbestos, and leaching tests.

Mara K. Warwick is the World Bank Country Director for Brunei, Malaysia, Philippines and Thailand. Trained as an environmental engineer, she has expertise in flood management, urban development, urban environmental services and disaster risk management. She manages a portfolio of more than US$ 3 billion in loans, grants and trust funds in these countries. She also leads the World Bank analytics and advisory services – including technical assistance and reimbursable advisory services – to support poverty reduction and promote shared prosperity in said countries.