The move by Home Affairs follows concerns expressed by local bomb disposal expert Ben Remfrey that a 2019 survey of the area did not probe deep enough.
After this had looked about 4m deep, Mr Remfrey warned that there was historic evidence to suggest that any unexploded ordnance could be at least 8m, or 26ft, underground.
The States has now announced that 6 Alpha Associates has been chosen to conduct the deep survey and it will start early next month.
The committee had gone out to tender after accepting Mr Remfrey’s argument back in February and four companies bid for the work.
It looked at the methodology to be used, the time frame for the work and the value for money offered, before selecting 6 Alpha.
The survey will look at a depth of up to 12m, said Home Affairs, and it is expected to cover the entire area in which bombs might be found.
Emergency planning officer Kevin Murphy said that it expected the company to tell it where the ordnance was located and how to deal with it.
‘We’ve kept our military liaison officer abreast of the situation and they continue to support our decision-making,’ he said.
‘I’d like to take this opportunity to thank everyone who has cooperated with us in preparing for this work to take place.’
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