Application of Health Risk Assessment to Derive Cleanup Levels at a Fuel-Oil Spill Site

Abstract

Risk-based corrective action (RBCA) has been becoming an accepted approach for the remediation of contaminated sites. This paper described the application of four different risk assessment approaches, including the North Carolina risk analysis framework (Framework), Illinois tiered approach to correction objectives, RBCA tool kit for chemical releases (RBCA tool kit), and exposure and risk assessment decision support system, to conduct a risk evaluation task and demonstrate the application strategy at a fuel-oil spill site. After the risk evaluation processes, the soil and groundwater remediation goals for target compounds (total petroleum hydrocarbon, benzene, toluene, ethylbenzene, and xylenes) were determined. The calculated remediation levels met with the requirements for minimum target risk levels (i.e., cancer risk of