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| Number | Title | Issue Date |
| 7976241 | Soil remediation method and composition A method for in-situ reduction of contaminants in soil. ... | 07/12/2011 |
| 7427177 | Method of using pulsed ozone to treat soils containing organic contaminants A method of treating a solid matrix containing organic contaminants is provided. The method comprises the steps of a) injecting ozone into the solid matrix for a period of time known as the pulse duration; b) interrupting the injection of ozone into the solid matrix... | 09/23/2008 |
| 7364386 | In-situ surfactant and chemical oxidant flushing for complete remediation of contaminants and methods of using same The present invention relates to removal of subsurface contaminants and methods of same. In more particular, but not by way of limitation, the present invention relates to an integrated method for remediating subsurface contaminants through the use of a low concentr... | 04/29/2008 |
| 7344337 | Geomorphology environmental remediation process and systems According to the methods, a site is investigated for possible selective removal of sediment containing a contaminant. An adjusted contaminant concentration is calculated for sediment zones on the site. The site preferably contains a water course. A determination may... | 03/18/2008 |
| 7264419 | System and method for remediating contaminated soil and groundwater in situ A system and method for the in-situ removal or remediation of contaminants in a soil formation containing a subsurface groundwater aquifer, the method comprising the steps of: injecting a first oxidant into the aquifer at an injection point to create a volume of inf... | 09/04/2007 |
| 7264747 | Coated microbubbles for treating an aquifer or soil formations A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall ha... | 09/04/2007 |
| 7230347 | Corrosion protection for wind turbine units in a marine environment A corrosion protected wind turbine unit includes a wind turbine unit support structure or foundation implanted in water and an impressed current anode electrochemically coupled to the wind turbine unit support structure or foundation through the water. Also included... | 06/12/2007 |
| 7150583 | Electro kinetic geosynthetic structure An EKG structure comprising geosynthetic material associated with at least one conducting element wherein the structure comprises at least one core element substantially enclosed by at least one sheath, one or both comprising the geosynthetic material; the use there... | 12/19/2006 |
| 7128841 | Dispersed zero-valent iron colloids Stable dispersions of zero-valent iron particles are produced by milling of micro- and nano-scale iron particles (colloids) in the presence of a dispersant or dispersants. ... | 10/31/2006 |
| 7074330 | Plant biomass management system and method A method for managing plant biomass in a wetland containing floating macrophytes includes the steps of draining a body of water having wetland plants growing thereon and permitting the plants to dry. The dried plant matter is then tilled into the bed of the water bo... | 07/11/2006 |
| 7021863 | In-situ surfactant and chemical oxidant flushing for complete remediation of contaminants and methods of using same The present invention relates to removal of subsurface contaminants and methods of same. In more particular, but not by way of limitation, the present invention relates to an integrated method for remediating subsurface contaminants through the use of a low concentr... | 04/04/2006 |
| 7021862 | Method for remediation of contaminated ground at oil or gas facility The present invention is a mobile, in situ applicator system and method for remediating contaminated soils at a site without the removal of those soils. The applicator system comprises a vehicle, preferably a chemical treatment vehicle used in the oil and gas indust... | 04/04/2006 |
| 7011766 | Capping and treating a metal-contaminated sediment A method of treating a metal-contaminated sediment includes capping the sediment with a capping product containing sulfur and at least one component selected from the group consisting of clays, clay-sized materials, bulking agents, sand, sand-sized materials, aggreg... | 03/14/2006 |
| 7001105 | Method of in situ blending of soil to reduce concentration of toxic residue in the soil An in situ method of reducing concentrations of contaminates in contaminated soil, where contaminated soil positioned in a first horizontal location is in situ mixed with clean soil in vertical proximity to the contaminated soil. The mixed soil is blended under cond... | 02/21/2006 |
| 6979150 | In-situ containment and extraction of volatile soil contaminants The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using diffe... | 12/27/2005 |
| 6971820 | Microblower assisted barometric valve A gas exchange apparatus is provided which provides for both passive fluid flow and blower associated fluid flow through a barometric valve. A battery powered blower is provided which allows for operation of the barometric valve during times when the barometric valv... | 12/06/2005 |
| 6955501 | In-situ process for detoxifying hexavalent chromium in soil and groundwater Inexpensive, highly effective methods for the in-situ reduction of hexavalent chromium to the non-toxic trivalent oxidation state in soil and groundwater containing hexavalent chromium are provided, which may reduce hexavalent chromium concentration in soil to as lo... | 10/18/2005 |
| 6939085 | Soil aerating machine A soil aerating machine includes in combination a skid-steer and a basket resembling a loader bucket adapted for attachment to the skid-steer boom. An air pressure tank, an elongate air nozzle pipe, an air hammer, and air control valves for the air nozzle pipe and a... | 09/06/2005 |
| 6916136 | Aerobic bioreduction of municipal solid waste landfill mass A process for converting municipal solid waste landfills to aerobic conditions that will allow for a highly accelerated and enhanced bioreduction of landfill mass, followed by the optional excavation of the landfill cell materials subsequent to the bioreduction proc... | 07/12/2005 |
| 6913420 | Fluid movement apparatus Apparatus suitable for venting and dispensing gas from an area of ground. The apparatus comprising a passage arrangement locatable in the ground extending generally horizontally and formed from a plurality of self-supporting open units. One or more columns extends d... | 07/05/2005 |
| 6911570 | Method for fixating sludges and soils contaminated with mercury and other heavy metals The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material such that the metals will not leach from the particulate material. The method generally involves the application of a metal ... | 06/28/2005 |
| 6910829 | In situ retreival of contaminants or other substances using a barrier system and leaching solutions and components, processes and methods relating thereto Processes and methods relating to treating contaminants and collecting desired substances from a zone of interest using subterranean collection and containment barriers. Tubular casings having interlock structures are used to create subterranean barriers for contain... | 06/28/2005 |
| 6814866 | Heating a leach field The leach field of a septic type sewage system is heated by various means, to raise the temperature and increase biochemical activity in the influence zone of leach field conduits. The capacity for waste water treatment is thus increased or restored. Heating is achi... | 11/09/2004 |
| 6746180 | Remediation of contaminates including low bioavailability hydrocarbons A method of treatment of a contaminated material contaminated with an organic compound. The method includes treating the contaminate with a chemical oxidation step and a bioremediation step. The chemical oxidation step includes treating the contaminate with the foll... | 06/08/2004 |
| 6742962 | Infiltration and gas recovery systems for landfill bioreactors A trench located in a landfill including the combination of a liquid infiltration piping system and a horizontal gas withdrawal piping system, the combination allowing for simultaneous liquid infiltration and gas withdrawal from a landfill. ... | 06/01/2004 |
| 6729801 | System and method for detecting contamination using vegetation sampling A method for performing exploration of the vadose soil zone first obtains samples of the surface vegetation from a region, next the samples are analyzed to determine if a contaminant is present in any of the analyzed samples, and, finally, a determination is made if... | 05/04/2004 |
| 6726406 | In situ formation of reactive barriers for pollution control A method of treating soil contamination by forming one or more zones of oxidized material in the path of percolating groundwater is disclosed. The zone or barrier region is formed by delivering an oxidizing agent into the ground for reaction with an existing soil co... | 04/27/2004 |
| 6718660 | Motorized road-going vehicle for making trenches in the ground A motorized road-going vehicle for making trenches may include on its chassis a device for digging a trench using a trenching wheel and a device for sucking and collecting the spoil produced while the trench is being dug. The trenching wheel is mounted so that it ca... | 04/13/2004 |
| 6648551 | Method for stabilizing and reducing permeability of geologic or waste materials Methods for inducing the precipitation of substantially water insoluble mineral carbonates in pores, spaces and fractures by conveying a carbon-dioxide (ie. CO2) bearing gaseous phase or an oxidised-carbon-bearing aqueous phase into spaces wher... | 11/18/2003 |
| 6644890 | Treatment of oxidable gas generated from waste at a dumping area A method for treating oxidable gas generated from waste at a dumping area and to the structure of the dumping area. The dumping area has an organic waste layer covered with a sealing layer that prevents the absorption of water, with a drying layer and a s... | 11/11/2003 |
| 6632047 | Heater element for use in an in situ thermal desorption soil remediation system An in situ thermal desorption (ISTD) soil remediation system may be used to remove or reduce contamination within soil. Heat may be transferred to the soil from resistively heated, bare metal heater elements. The heater elements may be placed directly wit... | 10/14/2003 |
| 6623211 | Remediation of contaminates including low bioavailability hydrocarbons A method of treatment of a contaminated material contaminated with an organic compound is provided. The method includes treating the contaminate with a chemical oxidation step. The chemical oxidation step includes treating the contaminate with a transitio... | 09/23/2003 |
| 6561733 | Method and apparatus for treating landfills A method for treating a landfill formation. The method includes the steps of preparing a water soluble resin solution, preparing a catalyst solution, and introducing separate streams of the resin and the catalyst into the landfill formation in a manner th... | 05/13/2003 |
| 6558081 | Composite particles and methods for their application and implementation In a method of creating a seal in a subsurface environment, a plurality of manufactured composite particles are placed in the subsurface environment, the composite particles including a sealant material. The sealant material is hydrated to create a cohesi... | 05/06/2003 |
| 6547490 | Coated metal peroxides Coated metal peroxides, their preparation and use, in which metal peroxides are coated with silicone compounds from selected from the group siliconates, hydrogen-polysiloxanes, siloxanes, silicone resin emulsions, silane/siloxane emulsions, silane/siloxan... | 04/15/2003 |
| 6546341 | Technique for rapid prediction of long-term hydrophobic organic contaminant desorption rates A laboratory technique for rapidly predicting the long-term hydrophobic organic contaminant (HOC) desorption behavior in a contaminated soil or sediment useful for planning remediation schemes and/or assessing alternative remediation endpoint decisions em... | 04/08/2003 |
| 6543963 | Apparatus for high-volume in situ soil remediation An apparatus for high volume in-situ treatment of contaminated soil is a mobile vehicle with a chain trenching tool an excavator drums attached to the idler wheel to extend the width of soil cutting and increase the volume of soil being churned and treate... | 04/08/2003 |
| 6497534 | Reduction of soil contamination The method of treating hydrocarbon contamination, in soil, that includes providing and operating a rotary tiller having tilling elements that rotate into and out of the soil to till and loosen the soil, and to elevate soil upwardly so that loosened elevat... | 12/24/2002 |
| 6485232 | Low cost, self regulating heater for use in an in situ thermal desorption soil remediation system An in situ thermal desorption soil remediation system may be used to remove contamination from soil. Heat may be applied to the soil by metallic strip heaters that have large cross sectional areas as compared to conventional heater elements. The strip hea... | 11/26/2002 |
| 6481929 | Aerobic bioreduction of municipal solid waste landfill mass A process for converting municipal solid waste landfills to aerobic conditions that will allow for a highly accelerated and enhanced bioreduction of landfill mass, followed by the optional excavation of the landfill cell materials subsequent to the biored... | 11/19/2002 |
