This slide presentation summarizes the results or streamlined, risk-based corrective action (RBCA) assessments performed at nine Air Force sites with fuel-contaminated groundwater. The goal of this risk-based remediation approach was to find the most cost-effective method of reducing current and future potential risk by combining chemical source reduction, chemical migration control, and receptor restriction risk-reduction techniques.

This document summarizes the results or streamlined, risk-based corrective action (RBCA) assessments performed at nine Air Force sites with fuel-contaminated groundwater. The goal of this risk-based remediation approach was to find the most cost-effective method for reducing current and future potential risk by combining chemical source reduction, chemical migration control, and receptor restriction risk-reduction techniques.

The Air Force is responsible for thousands of sites throughout the United States and abroad that are contaminated with petroleum hydrocarbons such as jet fuel, diesel fuel, gasoline, and heating oil. Despite significant improvements in fuels management over the past 20 years, equipment failures and human error will continue to create new spills which may require remediation. The purpose of this handbook is to provide Air Force environmental managers and their supporting technical specialists with a comprehensive strategy for cost-effectively cleaning up soils and groundwater contaminated by petroleum releases.

The Air Force is responsible for thousands of sites throughout the United States and abroad that are contamnated with petroleum hydrocarbons such as jet fuel, diesel fuel, gasoline, and heating oil. Despite significant improvements in fuels management over the past 20 years, equipment failures and human error will continue to create new spills which may require remediation. The purpose of this handbook is to provide Air Force environmental managers and their supporting technical specialists with a comprehensive strategy for cost-effectively cleaning up soils and groundwater contaminated by petroleum releases. The original Air Force Handbook for Remediation of Petroleum Contaminated Sites, which was published in 1993, has been updated to include the most recent advances in site investigation techniques and remedial approaches and technologies. In addition, since publication of the 1993 handbook, positive regulatory changes have taken place as the United States Environmental Protection Agency (USEPA) and a majority of state regulatory agencies have adopted more flexible, risk-based regulations for petroleum release sites. In addition, many states now recognize natural attenuation as a viable treatment alternative for petroleum-contaminated groundwater. These regulatory changes have had significant impacts on the remediation process, and have been fully incorporated into this new handbook.

This work plan was prepared by Engineering-Science, Inc. (ES) and describes the scope of work required for the collection and analysis of data to complete an engineering evaluation/cost analysis (BE/CA) in support of a risk-based remediation decision for soil and ground water contaminated with JP-4 fuel hydrocarbons at Site STl4 at Carswell Air Force Base (AFB), Fort Worth, Texas. Site STl4 consists of two separate sites: Site STl4A, the Fuel Loading Area, and Site STl4B, the petroleum, oil, and lubricant (POL) tank farm. This work plan is the equivalent of a treatability study test design (TSTD) for the field test of the risk-based approach for the remediation of Site ST 14. This innovative technology demonstration is sponsored by the Air Force Center for Environmental Excellence (AFCEE) at Brooks AFB, Texas, under contract F41624-93-C-8044, "Risk-Based Approach to Fuel Spill Remediation." The Site STl4 demonstration is a component of a multi-site initiative being sponsored by AFCEE to demonstrate how quantitative fate and transport calculations and risk information based on site-specific data can be integrated to quickly determine the type and magnitude of remedial action required at a site to minimize contaminant migration and receptor risks.