Life cycle assessment (LCA) is a powerful tool established by the International Organization for Standardization (ISO) that can be used to assess the environmental impacts of a product or process from cradle-to-grave. Many studies utilize the LCA methodology within the site remediation field to compare various decontamination methods, including bioremediation, thermal remediation and excavation for off-site treatment and disposal. However, limited information is available in the literature on a sustainability tool that can be used to help assess and select the optimal remediation technology at any given site. Accordingly, this project was undertaken to develop a tool to assist with the selection of the most sustainable technology with the focus of contaminated gasoline sites. Preliminary LCA results show decreased environmental impacts for the remediation of a contaminated gasoline site for each technology when compared to a no remediation alternative. Sensitivity analyses are now being completed on site parameters to determine how environmental impacts fluctuate at other contaminated locations based on parameters such as transportation distances or soil type. Additionally, the social and economic impacts associated with the technology are being reviewed to complete a full sustainability assessment. Utilizing the environmental, economic and social results, a sustainability tool will be developed to help to assist in the selection of the best remediation option.