Sonsub Inc.

John H Skaggs

William R Bath

Charles R Yemington

A removal apparatus which includes a container adapted to store removed soil, which is supported from the end of a crane, which applies a downward load on the container to keep it against the contaminated soil and advancing forward. The removal apparatus features a replaceable blade which is attached at the forward end of the container at a predetermined level to define the depth of the cut. Vertical cheek plates are attached at either side of the container to cut the end of the soil at the outer edges of the blade and to provide vertical side wall support to confine the soil within the container. Front and rear dust control chambers are provided which restrict the movement of airborne contaminants. The container includes a sensor to monitor the level of contaminated soil remaining after a cut. Prior to removal, an initial survey is made of the area is made using a sensor capable of determining the level of the contaminants in the soil. Contamination levels are recorded for a number of the positions, resulting in a map of the area. A display of the contamination levels is provided to the operator of the removal apparatus, which has its position monitored and shown on the display. The sensor on the container provides a sensor reading of the contamination level in the soil remaining after the cut. This sensor reading updates the contamination level value previously obtained, with the updated level being provided on the display.

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Houston, TX, United States of America

John H Skaggs