Two-Year Soil Gas Sampling and Respiration Testing Results Report for Full-Scale Bioventing at the POL Yard, Sites SS-06 and ST-40, Wurtsmith AFB, Michigan

摘要

This letter report presents the results of the static soil gas sampling and respiration testing performed by Parsons Engineering Science, Inc. (Parsons ES) for the full-scale bioventing system at the former Petroleum, Oils, and Lubricants, (POL) Yard, Sites SS-06 and ST-40, Wurtsmith AFB, Michigan. Soil gas samples were collected and in situ respiration testing was performed by Parsons ES from 13 to 17 October 1998 to assess the extent of remediation completed during approximately 2 years of air injection bioventing. The purpose of this letter is to summarize site and bioventing activities to date, present the results of the most recent respiration testing and soil gas sampling event, and to compare these results with previous pilot testing and monitoring results. A site layout and two tables are attached. The as-built bioventing system and sampling/respiration testing locations are illustrated on Figure 1. Table 1 provides initial, 1-year, and 2-year soil gas sampling results. Table 2, provides results of respiration testing performed prior to bioventing system startup, and after 1 and 2 years of air injection bioventing.