Stage 1:

Preliminary UXO Risk Assessment

There is a very low likelihood of encountering buried explosive ordnance / unexploded ordnance (UXO) at the majority of UK sites. The first step in the risk management process - Stage 1 Preliminary Risk Assessment (PRA) - is the ideal way to quickly identify a low risk and avoid further action at additional cost.

The main objective of a PRA is to confirm whether or not further research is required to verify the risk. If a low risk cannot be concluded at Stage 1, a Stage 2 Detailed Risk Assessment (DRA) will be recommended.

Our PRA service is a desktop study service. Every bespoke PRA is researched and written by an experienced risk analyst. We do not use online tools to automatically generate partially site-specific reports.

The availability of historical records will differ depending on the site's location. As an absolute minimum, all our PRAs involve analysis of:

Aerial photography
Historic OS mapping
Local WW2 bombing density
WW1 air raid records
Our PIEO (potential indicators of explosive ordnance) GIS map. PIEO plots our vast database, the result of over a decade of research.

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In accordance with CIRIA C681 / C785 guidelines, our PRAs consider the following:

The Site: location, history and occupancy
Wartime UXO: enemy action (German bombing and shelling) and British anti-aircraft artillery fire
Domestic Military Activity: British and Allied armed forces activity, both wartime and peacetime
Mitigating Factors: previous ground works and explosive ordnance clearance (EOC) tasks
Proposed Works: the degree of planned soil disturbance

Standard Delivery: 24 - 48 hours from order confirmation

Standard Fee: £130* + VAT

*Non-standard fees are also available.

For extremely large sites, multiple sites, or if you have a very tight time-frame, get in touch and we will be happy to discuss your specific requirement.

Can I see an example PRA before I order one?

Of course. Your free sample PRA is available on request.

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Preliminary UXO Risk Assessment