04890673 is referenced by 39 patents and cites 13 patents.

A method and apparatus of collecting volatile contaminants from a contaminated layer of earth. The apparatus is a closed-loop device which includes one or more contaminant withdrawal wells surrounded by multiple air reinjection wells connected by a conduit. One or more pumps serve to draw volatilized contaminant through the withdrawal well to the connecting conduit where it is captured or neutralized. Residual air from the withdrawal well is urged back into the ground through the air reinjection wells to encourage further contaminant to move toward the withdrawal well for collection.

Title
Method of removing volatile contaminants from contaminated earth strata
Application Number
22105
Publication Number
4890673
Application Date
February 1, 1988
Publication Date
January 2, 1990
Inventor
Frederick C Payne
Charlotte
MI, US
Agent
Thomas J Dodd
Assignee
Midwest Water Resource
MI, US
IPC
E21B 43/40
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