Risk-Based Characterization of Site ST-08 (Building 41105), Pope Air Force Base, North Carolina
Abstract
The objective of risk-based remediation is to reduce the risk of specific chemicals to human health and/or ecological receptors such as animals or plant life. The goal of this risk-based remediation approach is to assist the Base and its primary environmental contractors in finding the most cost-effective method of reducing present and future risk by combining three risk reduction techniques: (1) Chemical Source Reduction - Achieved by natural attenuation processes over time or by engineered removals such as free product recovery, soil vapor extraction (SVE), or in situ bioventing; (2) Chemical Migration Control - Examples include natural attenuation of a groundwater plume, and SVE to prevent migration of hazardous vapors to a receptor exposure point; (3) Receptor Restriction - Examples include land use controls and site fencing to eliminate chemical exposure until natural attenuation and/or engineered remediation reduce the chemical source and/or eliminate the potential for chemical migration to an exposure point. The major tasks of this risk-based project are: (1) Assessing available data and collecting any supplemental site characterization data necessary to define the nature, magnitude, and extent of soil, soil gas, surface water and groundwater contamination and to document to what degree natural attenuation processes are operating at the site; and (2) Determining whether an unacceptable risk to human health or the environment currently exists or may exist in the foreseeable future using reasonable exposure scenarios, quantitative contaminant fate and transport models, and exposure concentration estimates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1999
- Accession Number
- ADA381543
Entities
Organizations
- Parsons Corporation