Engineering Evaluation/Cost Analysis for the Risk-Based Remediation of Pumphouse Number 2

摘要

Parsons Engineering Science, Inc. (Parsons ES), formerly Engineering- Science, Inc. (ES), was retained by the United States (US) Air Force Center for Environmental Excellence (AFCEE) to prepare an engineering evaluation/cost analysis (EE/CA) in support of a risk-based remediation decision for soil and groundwater contaminated with fuel hydrocarbons at Pumphouse Number 2, a former fuel storage and pumping facility at Malmstrom Air Force Base (AFB), in Great Falls, Montana (the Base). Risk-based remediation is designed to combine natural physical, chemical, and biological processes with low-cost source removal technologies such as in situ bioventing, as necessary, to economically reduce potential risks posed by subsurface petroleum fuel spills. A decision diagram for the risk-based process is shown in Figure 1.1.