ABSTRACT
This chapter presents a cross section of applied procedures for soil remediation. One option for remediation was to repair the line and allow natural rain infiltration to flush the brine from the soil. The initial remediation response was installation of several recovery wells to retrieve free phase gasoline and contaminated groundwater. Vapor testing of the unsaturated zone indicated that a significant quantity of gasoline was retained on the soil. A pilot vapor extraction test was performed to determine if soil venting would be effective. At sites where no immediate threat to human health and the environment exists, bioremediation by plant fixation is an economical alternative to excavation and disposal. The basic principle of landfarming, also called surface bioremediation, is to enhance naturally-occurring degradation. Often, areas used for on-site surface bioremediation are considered to be temporary treatment areas which, after the treatment is completed, will be returned to original use.
