Farallon’s site characterization efforts resulted in identification of a second likely source of contamination at the Site, leading to the development of an independent remedial action plan to address soil and groundwater contamination. Farallon oversaw the excavation and disposal of approximately 4,000 tons of petroleum-contaminated soil. To remediate contamination left in-place at the site due to proximal active railroad lines and subsurface utilities that included a sensitive fiber-optic cable, Farallon designed and directed the installation of an LNAPL cut-off and recovery wall. Ongoing groundwater monitoring has demonstrated the effectiveness of the combined source-removal efforts and installation of the cutoff wall in mitigating migration of petroleum hydrocarbons in groundwater at the facility.