API PUBL 4410-1985

$43.55

Subsurface Venting of Hydrocarbon Vapors from an Underground Aquifer

Published By	Publication Date	Number of Pages
API	1985	185

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Description

This report presents the results of a study which was designed to evaluate the effectiveness of subsurface ventilation techniques in controlling and removing hydrocarbon vapors from a soil formation at the site of a gasoline spill. The spilled product had entered a shallow aquifer approximately five years earlier and conventional recovery methods had been used to recover a substantial quantity of the liquid product.

The purpose of this study was to design, install, operate, and evaluate a subsurface ventilation system which could be used to augment conventional recovery methods used to mitigate hydrocarbon spills. The main emphasis of this effort was to evaluate the effectiveness of forced venting in controlling and removing hydrocarbon vapors from the underground environment. In addition, sampling and analytical procedures were developed specifically for this study to measure the effectiveness of the hydrocarbon recovery and vapor control during venting. The data collected during this program will be useful in optimizing the design of subsurface ventilation systems used to mitigate spills of this type.

A brief summary of the results of this study are presented in Section 1.0. A description of the system design and installation procedures are provided in Section 3.0. Also summarized in Section 3.0 are the procedures employed to evaluate the effectiveness of the subsurface ventilation techniques used during this study. The results of this study are presented in Section 4.0. A summary of the results and the conclusions drawn from this study are presented in Section 5.0.

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