The Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Sites includes a review of basic risk concepts related to environmental cleanup sites, a tiered process for evaluating risk and setting risk-based cleanup levels for petroleum contamination, a summary of program-specific options and requirements for evaluating risk in the UST Program and the Environmental Cleanup Program, a generic remedy for simple risk-based remedial actions, and a table of generic risk-based concentrations for petroleum constituents as well as product-specific total petroleum hydrocarbons.