Shell Oil Comapny

George M Deeley

Paul C Johnson

Charles C Chou

David A Weingaertner

Arnold R Marsden, Jr

Arthur L Otermat

Stephen Merle Stearns

Dallas Lea Byers

James D Colthart

An improved process for the remediation of soil contaminated by the presence therein of organic or semi-volatile inorganic contaminants which comprises (1) supplying thermal energy to the soil at one or more locations under the surface of the soil, (2) collecting the vapors resulting from contaminant vaporization or decomposition under the influence of the thermal energy, after passage horizontally through the soil, at one or more locations under the surface of the soil and separating from the collected vapors the environmentally undesirable components thereof.

Soil decontamination

The primary purpose of the present invention is to preseal a pit by adding a specially designed sealing material to the pit bottom prior to putting other materials, e.g., waste material, into the pit, e.g., a disposal pit.

Sealing of pits

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Houston, TX, United States of America

George M Deeley