The document discusses how design-build strategies can optimize cost effectiveness in abandoned mine remediation projects. It provides several case studies where the design-build approach allowed for modifications and innovations that reduced costs and schedules. This included utilizing on-site materials, modifying designs to address unforeseen conditions, using real-time testing to reduce laboratory costs, and conducting projects as design-build to eliminate pre-design costs. Across the various case studies, the design-build approach is estimated to have saved hundreds of thousands of dollars in costs and weeks in schedules.