Treatability Study in Support of Remediation by Natural Attenuation for Groundwater at Zone 1. Westover Air Reserve Base, Chicopee, Massachusetts

摘要

This report was prepared by Parsons Engineering Science, Inc. (Parsons ES), formerly Engineering-Science Inc. (ES) and presents the results of a treatability study (TS) conducted to evaluate remediation by natural attenuation (RNA) of fuel-hydrocarbon- and chlorinated-solvent-contaminated groundwater in Zone 1 at Westover Air Reserve Base (ARB), Chicopee, Massachusetts. Zone 1 encompasses sites SS-16, SS-19, and WP-15. The main emphasis of the work described herein was to evaluate the effectiveness of RNA with long-term monitoring (LTM) for restoration of groundwater contaminated with benzene, toluene, ethylbenzene, and xylenes (BTEX). Additional fuel hydrocarbon and chlorinated solvent compounds were identified as chemicals of concern (COCs) for Zone 1; therefore, the potential for natural attenuation mechanisms to effectively reduce low, dissolved concentrations of these compounds in site groundwater also was qualitatively considered.