Zapata Incorporated

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Geophysical Applications

UXO Detection and Removal

ZAPATA has performed Unexploded Ordnance (UXO) detection, mapping and remediation projects in all regions of the United States and in Europe and Asia.  Using the latest technology, ranging from the Geonics EM61-MK2 to the Geometrics MetalMapper multi-component, multi-sensor platform with discrimination capability, ZAPATA is experienced in all phases of UXO investigation and clearance.  Mapping is performed using the industry-standard Geosoft Oasis Montaj™  software, and results can be delivered in any form including Microsoft Access as per USACE DID MR-005-05.01.

 

The workhorse of our UXO detection projects is the Geonics EM61-MK2.

Of special interest is the new 3-component Geometrics MetalMapper, capable of modeling and discrimination.

Also used by ZAPATA on UXO projects are the Geonics EM31-Mk2 frequency-domain EM system, the Geometrics G-882 Magnetometer, and the TVG-882 Marine Magnetometer.

UXO Discrimination with MetalMapper

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ZAPATA has carried out a series of  four UXO detection and discrimination demos using the new MetalMapper EM platform from Geometrics.  These projects have demonstrated the ability of the instrument and the associated modeling and classification software to markedly decrease the number of digs required to retrieve a very high percentage (up to 100% depending on the chosen parameters) of Targets of Interest (UXO).

Tonopah Test Range Autonomous UXO

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ZAPATA completed electromagnetic surveys at the Tonopah Test Range near Tonopah, Nevada using an Autonomous Remote Controlled Vehicle designed to cover large areas without exposing personnel to potential hazards from Unexploded Ordnance. The geophysical surveys, conducted with a towed array of three Geonics EM61 coils, sought the locations of a buried rocket, depleted uranium rings, and scattered buried sub-munitions. The remote controlled vehicle successfully completed the geophysical surveys in a rapid and cost effective manner.

Pat Mayse Lake Mag & EM UXO

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ZAPATA performed a water-borne UXO survey on Pat Mayse Lake, Camp Maxey, Texas.  The survey was carried out using a submersible Geometrics TVG-882 magnetometer and underwater Geonics EM61-Mk2, and a Lowrance bathymetry system.  Additionally,  an Edgetech 4125-P side-scan sonar system provided high-resolution imagery of the lake floor.

Oklahoma Salt Plains UXO

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An electromagnetic survey was conducted over 288 acres by ZAPATA at the Oklahoma Salt Plains National Wildlife Refuge, in Cherokee, Oklahoma. The objective of the work, completed for the United States Geological Survey, was to identify the presence of potential disposal pits containing metallic debris. All the electromagnetic geophysical surveys were conducted using Dual Coil and Triple Coil Geonics EM61-MK2 systems, and real-time kinematic (RTK) GPS navigation.

 
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