ABSTRACT
This chapter describes the kinds of measurements important to a bioremediation project and a relatively new approach for performing many of those measurements subsurface. The new method has been named SEAMIST. The purpose of the measurements falls into three time intervals: the initial information, the information needed for planning a bioremediation, and the data needed to monitor the progress of the remediation. Since the SEAMIST membrane can be installed in a horizontal hole as easily as a vertical hole, the same liner function is available for directionally drilled holes with washouts, slough piles, curves, or constricted cross section. The concerns of the common vertical sampling approach are isolation of the sampling horizon and the prevention of vertical flow in the boring outside of the casing. The ability to withdraw a gas sample from many elevations in the same hole, while the hole is entirely plugged by the pressurized membrane, allows very high spatial resolution pore gas samples.
