I have worked as a civil and environmental engineer for almost 25 years—for contractors, for consultants, and in local government. I have worked on road and highway projects in Auckland and Wellington, and in Fiji I worked in some really difficult and remote conditions, building infrastructure there for the benefit of those communities. In local government, I managed investigation, design, and remediation of closed landfills, Auckland's most dangerous landfills, and some of the worst landfills in New Zealand. I worked to clean up toxic timber chemicals and the dioxins found in Agent Orange—that toxic defoliant sprayed all over Vietnam, half of which was manufactured in New Zealand. Now, those companies took a risk-based approach to the clean-up to demonstrate to those communities that contaminated sites would be safe after the clean-up. They cleaned up using technology not even considered by Government at that time. Those companies cleaned up because it was the right thing to do.