Work Plan for Engineering Evaluations/Cost Analyses at Hangar 10 and Site ST41, Elmendorf Air Force Base, Anchorage, Alaska

摘要

This work plan was prepared by Engineering-Science, Inc. (ES) and presents the scope of work required for the collection of data necessary to conduct an engineering evaluation/cost analysis (EE/CA) for remediation of fuel- hydrocarbon-contaminated ground water at two sites at Elmendorf Air Force Base (AFB), Anchorage, Alaska. The two sites to be addressed are the Hangar 10 site and site ST4l (locally known as Four Million Gallon Hill). Several remedial options will be evaluated during the EE/CA, including free product removal; ground water extraction, treatment, and re-injection (i.e., pump and treat); air sparging; and intrinsic remediation with long-term monitoring (intrinsic remediation). All hydrogeologic and ground water chemical data necessary to evaluate the various remedial options will be collected under this program; however, this work plan is oriented toward the collection of hydrogeologic data to be used as input into the Bioplume II ground water model in support of the intrinsic remediation (intrinsic remediation) with long-term monitoring remedial option for restoration of fuel hydrocarbon-contaminated ground water.