Resources Contact Us Home
Remediation method

Image Number 4 for United States Patent #6464005.

A method of remediating a site of earth and groundwater contamination includes the steps of drilling at least one injection well, and preferably a plurality of injection wells, into the groundwater in a contaminated area. At least one, and preferably a plurality of extraction wells, are drilled into the earth above the groundwater, the vadose zone, in the contaminated area. The surface of the earth above the contaminated area is sealed, such as by a layer of concrete, asphalt, or plastic sheeting. Air and nutrients are injected into the contaminated area through the injection wells. The air is injected on a substantially continuous basis while the nutrients are injected on a batch basis. Air and vapor is extracted on a substantially continuous basis from the contaminated area by the extraction wells, which may be either vertically or horizontally positioned.

  Recently Added Patents
Adapter plate for use in mounting an audio/visual device or the like to a surface
Obviation of recovery of data store consistency for application I/O errors
System and method for hybrid risk modeling of turbomachinery
Method and apparatus for wireless transmission of diagnostic information
Parasitic element compensation circuit and method for compensating for the parasitic element
Triazole derivatives as ghrelin analogue ligands of growth hormone secretagogue receptors
Fabrication of thin pellicle beam splitters
  Randomly Featured Patents
Arrangement of data input/output circuits for use in a semiconductor memory device
Punch device and system comprising same
Preselected releasable threaded coupling member
Braking control system for vehicle
Wiper blade assembly clip
Process and device for the manufacture of a particularly heat-resistant hollow body
Pen/pencil holder
Fuel injection nozzle with compressible valve
Textile substrate with polymer foam coating