Roy Thun is an accomplished environmental portfolio manager and climate resiliency & sustainability thought leader with over 30-years' experience working in both environmental consulting and BP's Remediation Management group. Roy is a board member of the Sustainable Remediation Forum (SURF), and one of the founding members of the Los Angeles County Metropolitan Transit Authority's Sustainability Council. He has been a contributor to a variety of guidance documents, including: ITRC's Sustainable and Resilient Remediation, ITRC's Remediation Management of Complex Sites, and ASTM's Recognition and Derecognition of Environmental Liabilities.