AMEC Geomatrix was retained to perform a critical reassessment of the remediation approach for a 210-acre site located in a very sensitive ecological area adjacent to Chesapeake Bay. Soil and groundwater at the site are impacted by creosote DNAPL, pentachlorophenol, PAHs, and BTEX. At the time, a pump and treat remedy had been implemented at considerable cost, and more than 50 monitoring wells were in place at the site. An integrated, site-wide approach was taken to completing the remedial design. The final solution included a subsurface, low-permeability barrier (approximately 1 mile long); hydraulic control systems including an area of phytoremediation; in situ bioremediation of groundwater affected with PAHs and BTEX; DNAPL recovery wells using groundwater recirculation technology; and a surface cover system for affected surface sediments. As some wetland habitat was impacted during construction, the project also included the creation of approximately 5 acres of tidal wetlands and 6 acres of non-tidal wetlands. This project was finished on time and under budget. The project team also received an award for this project from the State of Maryland for the innovative and effective implementation of the remediation program.