Hydraulic and earth engineering – Subterranean waste disposal – containment – or treatment – Waste barrier – containment – or monitoring
Reexamination Certificate
2005-04-19
2005-04-19
Kreck, John (Department: 3673)
Hydraulic and earth engineering
Subterranean waste disposal, containment, or treatment
Waste barrier, containment, or monitoring
C405S129650, C405S129700, C210S747300
Reexamination Certificate
active
06881010
ABSTRACT:
A system for the onsite storage, treatment and disposal of contaminated soils and sediments includes a trench that is excavated at the site. The trench is formed with a bottom surface that includes a sump reservoir and a sloped portion oriented to feed liquids into the sump reservoir. An impervious liner is positioned in the trench to prevent leakage into the surroundings. A sump system that includes the sump reservoir, drain tubes and geotextile netting is disposed in the trench to transfer fluids between the sump reservoir and the contaminated material. A geotextile filter sheet is positioned over the sump system allowing fluid transfer between the sump system and the contaminated material while preventing solids from entering the sump system. An access pipe allows fluids to be introduced into and withdrawn from the sump reservoir to accomplish various treatment methods including de-watering, vapor extraction, bioremediation, surfactant washing and solvent extraction.
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Kreck John
Nydegger & Associates
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