Intrinsic Remediation Engineering Evaluation/Cost Analysis for Site SS27/XYZ Dover AFB, Dover, DE
Abstract
This report presents the results of the investigation performed by Parsons Engineering Science, Inc. (Parsons ES) at Dover Air Force Base (AFB), Delaware to evaluate the use of intrinsic remediation (natural attenuation) with long-term monitoring (LTM) as a remedial option for dissolved benzene, toluene, ethylbenzene, and total xylenes (BTEX) contamination in the shallow saturated zone. Parsons ES conducted the field investigation during April 1994 at Site SS27/XYZ (currently known as fueling pads AA, BB, and CC). The source of the contamination is assumed to be from leaking pipelines and associated equipment. BTEX and total volatile hydrocarbons (TVH) were determined to be dissolved in groundwater and adsorbed to soils. Residual light nonaqueous-phase liquid (LNAPL) was found throughout the soil column, both above and below the groundwater interface. Also, mobile LNAPL (free product) was observed at several existing wells and monitoring points. This study focused on the impact of the dissolved BTEX and residual and mobile LNAPL in the shallow groundwater system at the site. Potential electron acceptors were analyzed to quantify ongoing biodegradation. Site history and the results of soil and groundwater investigations conducted previously are also summarized in this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1996
- Accession Number
- ADA286957
Entities
Organizations
- Parsons Corporation