Terra Mentis staff provided risk assessment and clean up support and guidance to consulting engineers on a Voluntary Action Program project in Ohio at an active industrial facility where a wide range of chemicals had been identified in soil and groundwater. High levels of PCB in soil were found and required remediation. The PCB were primarily Aroclor 1254 and Aroclor 1016 and were of potential concern for worker exposure on-site. Project activities required Terra Mentis to select constituents of potential concern, estimate risk and summed risk clean up goals for soil and groundwater.