Across the nation, treatment technologies are being applied to clean up soil and groundwater contaminated with petroleum hydrocarbons from leaking underground storage tanks (UST). Site assessment (developing an accurate understanding of subsurface conditions at a site) increases the likelihood that a given treatment system or train will be effective at the site. The paper describes a preliminary screening methodology to help decision makers evaluate the likely effectiveness of various remediation technologies that may be applicable to cleaning up releases of petroleum products from underground storage tanks. The methodology is based on two recent EPA publications. The overall focus of the approach is on making a preliminary screening of what treatment technologies may be effective at a given release site. To facilitate the screening process, worksheets are provided to aid in the evaluation of alternative technologies.