Patent ID: 8082981

Claim:
A multiple point adjustable depth air sparging system for removing volatile contaminants from a saturated zone within a soil subsurface comprising: (a) a vertically oriented well casing extending downward into the saturated zone within the soil subsurface, said well casing having a screened portion at a lower end thereof positioned within the saturated zone of the soil subsurface; (b) a blower having an outlet port, said blower generating pressurized air for said adjustable depth air sparging system; (c) a plurality of air sparge flow-through packers slidably mounted and vertically positioned in the screened portion of said well case, wherein each of said plurality of air sparge flow-through packers includes an inflatable elastomeric material covering said air sparge flow-through packer, the elastomeric material for each of said air sparge flow-through packers when inflated locking said air sparge flow-through packers locking said air sparge flow-through packer in a fixed position within the well casing when inflatable elastomeric material is inflated; (d) an air supply line having one end connected to an outlet port of said blower, said air supply line extending downward into said well casing, said air supply line being centrally located within an interior of said well casing, said air supply line having have an opposite end connected to one of said plurality of air sparge flow-through packers positioned at an upper end of the screened portion of said well casing, said air supply line providing pressurized air to each of said air sparge flow-through packers to inflate each of said air sparge flow-through packers; (e) a plurality of pressure regulators positioned within the screened portion of said well casing at a plurality of pre-selected depths, each of said plurality of pressure regulators injecting said pressurized air from said blower through the screened portion of said well casing into said saturated zone at one of said plurality of pre-selected depths, wherein said plurality of pressure regulators form air channels at said pre-selected depths through which said pressurized air injected into said saturated zone flows to remove said volatile contaminants from said saturated zone; and (f) each of said plurality of pressure regulators being connected to a lower end of an associated one of said plurality of air sparge flow-through packers to receive said pressurized air from said associated one of the air sparge flow-through packers and maintain said pressure regulator at said pre-selected depth within the saturated zone when said associated one of the air sparge flow-through packers is inflated.