Superfund Innovative Technology Evaluation (SITE)
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|ETV Soil Gas Sampling Technology, Quadrel Services, Inc.- EMFLUX Soil Gas System
The EMFLUX system is a passive soil gas sampling system which predicts periods of maximum soil gas emissions in order to be able to select optimal sampling times. EMFLUX system allows simultaneous sample collection by multiple field collectors, eliminating the movement of equipment. EMFLUX system consists of cartridges, insertion tools, and sample analysis and computer modeling. The EMFLUX cartridge consists of a sorbent sealed in a fine mesh screen, which is placed in a glass vile for sample collection and shipped for analysis. The EMFLUX system was demonstrated in May and June 1997 at two sites: the Small Business Administration (SBA) site in Albert City, Iowa, and the Chemical Sales Company (CSC) site in Denver, Colorado. These sites were chosen because each has a wide range of volatile organic compound (VOC) concentrations and because each has a distinct soil type. The EMFLUX system was compared to a reference method, active soil gas sampling, in terms of the following parameters:
The demonstration data indicated the following performance characteristics: