"Under a contract with U.S. Army Corps of Engineers - Huntsville Division (CEHND), Parsons Engineering Science, Inc. (Parsons ES) will prepare an Engineering Evaluation and Cost Analysis (EE/CA) for the former Camp Grant Rifle Range in New Milford, Illinois. The project includes an unexploded ordnance survey, soil sampling, and unexploded ordnance sampling to a depth of 2 feet, preparation of an EE/CA and EE/CA Action Memorandum. This document is the Final Work Plan for the EE/CA field investigation. Preceding the Parsons ES work, UXB International, Inc. (UXB), under a separate contract with CEHND, will perform a Time-Critical Removal Action (TCRA) to a depth of 6 inches for the entire Camp Grant Rifle Range site. In January 1995, UXB prepared a TCRA Work Plan." --Preface.

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.

A field Investigation will be conducted at IRP Sites No. 7 (Dry Well off Corrosion Control Building) and No. 8 (Dry Well off Composite Maintenance Building), Montana Air National Guard, Great Falls International Airport, Great Falls, Montana. The Remedial Investigation (RI), completed in May 1997, recommended that an Engineering Evaluation/Cost Analysis be performed at Sites 7 and 8 to determine the significance of the groundwater contamination, and what remedial measures, if any, should be taken. The field investigation will consist of installing four (4) monitoring wells at each site, collecting and analyzing groundwater from each well, and measuring hydraulic properties of the groundwater. The objectives of this investigation will be to assess the extent of groundwater contamination, to determine the potential risk of the contamination to human health and the environment, and to evaluate removal action alternatives.