Explosive Remnants of War (ERW) and Unexploded Ordnance (UXO) are among the most common and most dangerous forms of industrial contamination in the world today. This legacy of both conflict and training has contaminated large areas, including valuable agricultural lands and significant areas on the fringes of urban centres. This land requires assessment and remediation to allow it to be fully utilised to meet the production, housing, environmental and social needs of the affected land users.

G-tek provides a full range of services for UXO detection and Remediation, including:

• Historic research;
• Assessment of the nature and levels of UXO contamination;
• High definition surveys to identify and precisely locate UXO and other military waste;
• Validation of detected items to establish whether they are UXO;
• Remediation of UXO contaminated areas;
• Quality control of the detection and remediation processes; and
• Quality assurance of de-contaminated areas.

G-tek staff and associates have extensive experience in historic research, as well as the ability to access historic records related to military conflicts and training activity over the past 100 years.

Historic research can establish the probable usage and potential existence of UXO or other explosive ordnance waste (EOW) over former conflict and training areas.

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To determine the extent and possible levels of contamination, G-tek uses a number of techniques, including:

• Ground geophysical surveys (digital and analogue) to gain either precise or statistically valid information about the type and density of contamination;
• Visual reconnaissance of sites to precisely identify the nature and types of contamination.

Site assessment can accurately predict the level and type of contamination, as well as the likely cost of survey and remediation.

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G-tek uses high precision geophysical equipment and methodologies, developed over more than 30 years of working with UXO.

G-tek’s Magnetometers and Electromagnetic Detectors are among the most sensitive, efficient and ergonomic digital instruments for sub-surface detection, three vital components in achieving UXO detection. G-tek’s advanced data processing and geological noise rejection technologies, highly skilled staff, experienced project managers and over 30 years experience in UXO detection consistently achieve extremely high detection and low false alarm rates

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Once the survey results have been processed and interpreted, G-tek’s military trained personnel conduct a physical excavation and examination to safely identify UXO and other contamination.

G-tek’s highly qualified staff identify, mark and record UXO, or suspected UXO, removing and disposing of inert items of EOW and related material.

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G-tek employs extensive quality control procedures to ensure that:

• The instruments are functioning properly and recording in accordance with their specification;
• The maximum possible level of UXO is detected by using “blind” seeding of a site with UXO representative of the items likely to be found and the depths they might penetrate;
• Professional interpretation of the collected data meets the highest possible quality standards;and
• Assessment and investigation includes systematic internal quality checks and supervisory practices.

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Where required, G-tek’s digital imaging systems and staff also conduct QA surveys of previously remediated areas. In many cases it is not necessary to remove all metal from the site - so this process delivers an accurate representation of what objects remain in the sub-surface and provides a final digital audit trail of the remediation process.

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