Ignacio Valdivia, MBA, is the Sustainability Manager at Holliday Rock Co., Inc., where he leads the company's low carbon concrete strategy, material innovation initiatives, and Environmental Product Declaration (EPD) program. Working at the intersection of sustainability, engineering, and business development, Ignacio partners with owners, architects, engineers, contractors, and public agencies to implement practical solutions that reduce embodied carbon while balancing constructability, performance, and cost. Known for bridging technical innovation with real-world implementation, Ignacio translates emerging technologies and evolving regulations into actionable strategies that accelerate decarbonization across the built environment. His collaborative approach brings together material suppliers, designers, contractors, and project owners to advance practical, scalable solutions that support California's climate goals. Beyond Holliday Rock, Ignacio serves as Chair of the Los Angeles Regional Leadership Advisory Board for USGBC California and actively contributes to several industry organizations advancing sustainable construction. He is passionate about helping shape the future of low carbon building materials and believes lasting progress is achieved when innovation, collaboration, and practical execution come together.