This publication of the U.S. Environmental Protection Agency (EPA), is intended as a tool to help states, tribes, EPA Brownfields Assessment grant recipients, and others develop an inventory of relatively low-risk, petroleum-contaminated brownfield properties. The publication has three sections. Section I identifies petroleum brownfields inventories as a tool for building and promoting a brownfields program. Section II outlines considerations for building an inventory, and Section III discusses best practices from stakeholders that have implemented a petroleum brownfields inventory. The Small Business Liability Relief and Brownfields Revitalization Act ('Brownfields Law') defines a brownfield site as 'real property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.' There are continuing challenges for the future success of the revitalization of petroleum sites, including the relatively small size of petroleum sites, which may impact the sites' marketability; liability concerns associated with site redevelopment; and the unique assessment and cleanup approaches for petroleum contamination. This publication intends to enhance communication among stakeholders and facilitate opportunities for the redevelopment of petroleum brownfield sites to help overcome these challenges.