Mono-well for soil sparging and soil vapor extraction

A method of decontaminating in-situ soil, said method comprising the steps of:

• drilling a bore hole from the surface of the earth to a depth below the surface of the earth to a depth to reach a targeted contaminated soil area;
• mounting an impervious casing whose diameter is greater than the bore hole concentrically outside the bore hole;
• inserting an injection tube within the bore hole to a depth where remedial fluid may be injected into the targeted contaminated soil area;
• filling a bottom area of the bore hole with granular material;
• filling a middle area of the bore hole above the bottom area with packing material that is substantially impervious to gas or liquid;
• filling a remaining upper area of the bore hole with permeable material whereby gas and liquid may pass;
• sealing said impervious casing with respect to the surface of the earth whereby an airtight seal is achieved;
• injecting remedial fluid through the injection tube wherein the remedial fluid is forced through the bottom area of the bore hole and into the surrounding targeted contaminated soil, the injected remedial fluid percolating upwards and outwardly around the middle area of the bore hole and through the contaminated soil;
• and
• drawing the remedial fluid back into the bore hole at the upper area of the bore hole located above the middle area and then through an outlet.

A method of decontaminating in-situ soil, said method comprising the steps of:

• providing a bore hole having an insertable injection tube;
• filling the bore hole at the bottom with granular material;
• filling the bore hole above the granular material with packing material substantially impervious to gas or liquid;
• filling the remaining upper portion of the bore hole above the packing material with permeable material;
• injecting remedial fluid through the injection tube so that the fluid passes through the granular material at the bottom of the bore hole, then upwardly around the exterior periphery of the packing material;
• drawing the remedial fluid back into the bore hole through the permeable material;
• and
• removing the remedial fluid from the bore hole for treatment.