Abstract: A method of constructing a well into which conduit is inserted to inject air or to withdraw contaminated fluid from an underground plume. The method involves forming a borehole of a specified depth and partially filling the hole with a material of high fluid porosity. After the conduit is inserted into the borehole, the remainder of the hole is filled with the high porosity material and the well is surface capped to prevent leakage.

Abstract: A process for removing and disposing of or neutralizing volatile contaminants existing in the vadose zone of earth and also in a below ground aquifer. The process includes the injection of substantially oxygen free air into the aquifer to retard the formation of aerobic bacteria and injection of oxygen rich air into the vadose zone to stimulate bacterial growth which aids contaminant recovery. Volatilized contaminants are pulled out of the soil through withdrawal wells which terminate in the vadose zone.

Abstract: Treatment apparatus for contaminated soils which includes a plurality of interconnected vessels which are cyclically connected to a pumping station and a treatment station. Contaminated soil is excavated and placed in the treatment vessels which are then sealed prior to activation of the pump, which may circulate a variety of compounds through the vessels depending upon the type of contaminants present in the soil.

Abstract: 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.

Abstract: A method and apparatus of collecting volatile contaminants from the vadose 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.