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Explosive ordnance surveying and disposal in Hildesheim
For project owners, planners and site management in Hildesheim, FONTANA-EOD coordinates explosive ordnance investigation with demolition and replacement construction. Old basements and foundations are considered alongside new construction boundaries, foundation depths and initially inaccessible areas. Send as-built plans, the demolition scope, new building plans and existing investigation reports so that the necessary specialist work can be clarified before each ground intervention.
Record the locations of basements and foundations.
Distinguish ground disturbance from other work.
Consider new locations and foundation depths.
Assess the construction project
Arrange coordinated investigation for demolition and new construction
For replacement construction in Hildesheim, removal of old foundations and basements may already affect additional ground volumes. Compare demolition and the new foundations with the existing explosive ordnance records and mark the ground works on the plan with locations and depths. The city’s information on explosive ordnance disposal identifies local contacts and what to do if an item is found. For proposed drilling and foundation points, we explain downhole and deep-ground survey. Previously investigated and additionally affected areas must remain separately identifiable.
Project site
Connect the site with the specific construction task
Site and existing requirements
Specify the actual project location with a site plan and the affected land parcels. Existing information, official conditions and reports are assigned to this area. Hildesheim is in Lower Saxony in the Leine-Weser administrative area. The City of Hildesheim is responsible for explosive ordnance hazard prevention within the city; information and existing reports are assigned to the specific site and ground works. For project addresses in the city centre and central districts, Moritzberg, Oststadt, Nordstadt, Himmelsthür, Drispenstedt or Bavenstedt, identify the available records. For enquiries from Harsum, Giesen, Sarstedt, Algermissen, Holle or other places in the Hildesheim district, the responsible body depends on the municipality and actual project location.
Local context
Assess earlier investigations for the new building
Local starting point
For the proposed new school building in Achtum, the draft of Amendment 4 to development plan AU 170, “Grundschule”, dated 14 February 2025 records a specific assessment: after aerial photograph analysis, no explosive ordnance contamination was suspected in the plan area. Ground investigations already carried out under the supervision of the explosive ordnance disposal service also found no indications that substantiated a suspicion. These findings concern the identified plan area and the investigations there. For your replacement building, have it assessed which areas and depths the existing results actually cover.
Implications for construction planning
On its explosive ordnance disposal information page, the City of Hildesheim identifies municipal bodies and the police as the responsible contacts. It also points out that found objects are not always recognisable as explosive ordnance. Before work, therefore, clarify both investigation needs and what to do if an unexpected item is found. Compare existing records of former buildings, reconstruction, rubble relocation and terrain changes with the present construction area. This also concerns repeatedly altered infrastructure and route corridors, main transport and utility routes and older operational and storage sites with changed uses. For residential districts, development and conversion sites, identify the proposed new ground works by location and depth. During demolition, existing results can then be assigned to the working areas that remain and those becoming accessible later.
The Hildesheim City Archive describes air raids on industrial and railway facilities in 1944 and 1945. The raid on the railway facilities on 22 February 1945 also hit Neustadt; on 22 March 1945, the historic old town in particular suffered severe destruction. For work in older built-up areas, this chronology is compared with the available aerial photographs, building files and later reconstruction records for the site concerned. Earlier building positions and the present ground works area must be spatially related for this purpose.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For the commissioned activities, the relevant technical requirements and questions of permits, competence certification and responsibility are clarified. The actual planned service scope is decisive. A general company designation does not replace checking that the tasks and interfaces are described appropriately for the specific project.
Link occupational safety to the construction sequence
Risk assessment, work areas and communication must suit the proposed activities. Ordnance specialist works are coordinated with the other construction activities. Operational organisation, traffic safety and other specialist technical inspections retain their own responsible parties. Joint coordination brings the information together without equating the different tasks.
Use technical findings correctly
A measurement anomaly first requires specialist assessment; its appearance alone does not identify it as explosive ordnance. If an object is genuinely suspected to be ordnance, the prescribed reporting procedures and the measures set by the responsible authorities apply. Investigation reports specify the work completed and its limitations, so that results are not extended to unexamined areas or later design changes.
Local procedures: City of Hildesheim: AU 170 “Grundschule”, Amendment 4, draft dated 14 February 2025, p. 14 · City of Hildesheim: explosive ordnance disposal.
Planning and documentation: BFR KMR: principles of clearance planning · BFR KMR: geophysics · BFR KMR: documentation · LGLN: explosive ordnance contamination on sites – who does what? · DGUV: explosive ordnance clearance FAQ
The BFR KMR guidelines are used as technical guidance; the applicable local requirements and responsibilities must be clarified separately. Their defined remit concerns federal projects; their application to other projects is clarified for the specific project.
For work in Germany, the permit, certificate of competence and responsibilities for the specific activity are assessed under the Explosives Act and the First Ordinance to the Explosives Act. The risk assessment under Section 5 of the Occupational Safety and Health Act relates to the planned activities. The DGUV Information 201-027 covers preventive investigation and clearance of conventional explosive ordnance and defines its scope. Its explanations concerning DGUV Rule 113-003 relate to specific activities involving explosives; they are not applied indiscriminately to every investigation for construction. § 7 SprengG concerns the commercial permit for activities requiring authorisation, and § 20 SprengG the certificate of competence of responsible persons. Under § 1b SprengG, searching for munitions that have been found also counts as handling.
Working together
Distinguish the tasks of client, designers and specialist contractor
Client and operator
The client describes the project and provides the available project records. The operator adds requirements for use, access and timing. A coordinating contact brings the parties together; individual tasks remain assigned to the named parties. Before commissioning, it is clearly recorded what information is missing, who will obtain it and what decision the result is intended to prepare.
Planning and construction management
The specialist designers describe areas, depths, construction methods and changes. Site management coordinates the planned sequence with the construction contractors and agreed specialist works. Results are assigned to the respective intervention. A technical plan change is communicated early enough for its effect on the survey task to be assessed before construction. Organisational construction stage boundaries remain distinguishable from technical survey boundaries.
Specialist company and competent bodies
The private explosive ordnance specialist contractor performs the agreed investigation and documentation work. Official requirements and decisions are clarified with the respective responsible bodies. The records needed for a specific procedure depend on the location and project. The technical report documents the specialist work carried out and its area, depth and limits of conclusions. The responsible bodies make official decisions concerning subsequent groundworks.
As the municipality, the City of Hildesheim is responsible for local hazard prevention. For explosive ordnance questions, the city identifies its Public Order and Trade service and the police as contacts. Lower Saxony’s explosive ordnance disposal service supports the municipality with hazard investigation, recovery and disposal. Commercial specialist contractors carry out the commissioned technical investigations. Contacts, official conditions, reporting channels and handover of assessed findings are agreed for demolition and new construction.
Investigation task
Which specialist task comes next?
First assess the existing findings
Aerial photograph analyses, official correspondence and earlier technical reports are related to the current project. What matters is which question each document answers and which spatial area it covers. Analysis of historical imagery must be distinguished from technical investigation of the present ground. If findings are missing or do not match the planned construction task, the further investigation needed is agreed with the specialists.
Assess historical documentsRelate the investigation to the area and depth
For the technical investigation, a suitable method is selected according to the objective, depth, ground and interference. A standard device alone does not define an appropriate service. The agreed scope identifies accessible areas and required results documentation. Even for a partial investigation, it must remain clear which area is actually investigated and which questions still require clarification afterwards.
Compare investigation methodsProject types
Use existing investigation results for replacement construction in Hildesheim
Demolition before the new structure
Replacement construction often begins with work on the existing building. If foundations, basements or underground utilities are removed, these ground works belong in the specialist task definition. The later building may affect different depths. Describe both phases separately and assign existing investigation results. Findings for the new building footprint do not automatically cover every preceding demolition activity.
The plan of the existing building identifies known underground structures and their proposed removal. Alongside it, the new structure’s ground volume is shown with depths and working areas. The specialist planners assign the existing reports to these two tasks. Different level references, for example before and after terrain changes, are also identified. Each construction phase records the investigation results needed before the respective work. If the demolition sequence changes, those involved receive the updated version. Further coordination can then address the actual next ground works and schedule the specialist work still needed for them in good time.
Provide specialist supervision of excavation
Negative assessment with supplementary preliminary investigations
A negative aerial photograph assessment and the results of supervised ground investigations must each be read within their actual scope. The respective results documents, together with their maps and explanations, are related to the property concerned. Your project requires the original reports identifying the respective areas, points and depths investigated.
The plan identifies the areas covered by the aerial photograph assessment and the investigation points actually supervised. The identifiers of these points remain linked to the corresponding reports. The complete appendices and descriptions of the investigation tasks are provided for this purpose. If any parts are missing, the author of the relevant report is contacted. The specialist planners compare the documented volumes with the demolition and new construction. They then identify which additional areas or depths need to be investigated for the planned ground interventions. The next results handover supplements this specific status with the specialist work newly carried out.
Understanding historical aerial photograph assessments
Areas newly accessible after demolition
Investigation conditions beneath existing structures may initially differ from those on open ground. If these areas become accessible later, further specialist work is coordinated with the construction sequence. Areas not investigated remain explicitly identified as such until then. A general project summary must not present them as areas already investigated.
After a change in the construction condition, the specialist company receives current information about the accessible area and remaining structures. Plans and photographs can show how the condition differs from earlier assumptions. For the investigation now possible, the volume of ground to be assessed in the next step is defined. The associated commission also specifies the prerequisites for access and execution. Site management keeps the boundaries with areas still inaccessible clearly identifiable. After the investigation, the results are assigned to the condition actually investigated. Before the next ground intervention, it is checked whether the planned work corresponds to this documented scope or requires further coordination.
Coordinate the sequence and tasksPreparation
Prepare the scope and commission together
Establish what needs to be known before commissioning the work
First establish which decision the commission needs to support. Is the task an initial assessment of existing documents, an investigation of a specific area or examination of an anomaly that has already been assessed? These tasks require different evidence. A general wish for safety does not define an investigation that can be carried out. The enquiry therefore specifies the groundworks, location, depth and available findings. Suitable specialist work and the required reporting are then agreed on that basis.
Define the specialist taskCoordinate preparatory work with the investigation
Required access and survey conditions are clarified before the site visit. This may include keeping areas clear, obtaining service information and coordinating with other trades. The method and site determine which preparations are actually needed. Changes to the surface or additional groundworks are not undertaken unilaterally simply to prepare for a survey. Their sequence is agreed with the specialist designers and responsible parties.
Clarify preparatory work in the programmeAgree a clear scope and schedule
A reliable process distinguishes work already technically clarified from prerequisites still unresolved. If an area will only be partly accessible, this must be taken into account when commissioning the work. Handover and assessment of results also need time in the construction programme. Specific coordination connects the described scope with access, records, execution conditions and the date by which a decision is needed.
Discuss the scope and scheduleTasks at the site
Groundworks required for demolition and new construction
01
Existing basements and foundations
Compare their known position and depth with the new construction plan. Existing construction documents can provide a basis for this, but must be identifiable as information about the existing structures. A previously constructed basement does not establish a general conclusion about the ground beside it or beneath its base.
02
Removal of underground structures
Removing foundations, services or basement structures can expose ground that was previously inaccessible. Describe these activities explicitly. Before execution, clarify when these areas can be investigated and what preliminary work is needed. Describe the work more precisely than simply calling it demolition.
03
Extension or greater depth
If the new building extends beyond the former footprint or has deeper foundations, these areas must be identified separately. A report relating to the former construction condition does not automatically cover the change. New chambers and connection trenches may also require supplementary investigation.
04
Working space beside remaining buildings
Where space is restricted, access, structures remaining in place and known services must be taken into account when carrying out the work. Identify these conditions early. The investigation method must be suited to accessibility, installations and the investigation objective.
Project documents
Documents that establish the next step
Distinguish the planning explanatory statement from original reports
A planning explanatory statement may summarise earlier investigations. For a new commission, the associated complete reports and appendices should be obtained where available. Only these allow the methods, spatial references and limitations to be understood more precisely. The complete specialist reports relate the summary statement to the investigations actually carried out.
Provide demolition and new construction plans together
As-built plans, the scope of demolition and the new foundation design together show where the first ground interventions will take place. Identify structures that remain unclear and planned investigation openings. The specialist planners can then assess which findings are needed before each task and which parts can only be investigated suitably at a later stage.
Construction sequence
Coordinate investigation and construction sections
Preparatory investigation and initial ground works
The sequence is planned around the ground works actually proposed. Drilling, service diversions or temporary foundations may already be planned before the main excavation. For each affected area, it is clarified what must be established beforehand and which records are available. Construction plans already submitted may need additional construction details later. These additions are submitted for specialist assessment before the work concerned begins.
Further construction phases and changed plans
At the transition to the next construction phase, it is checked which results still apply. The location, depth and limitations described in the report are decisive. Additional working areas or changed methods are explicitly included. An interim release of an area for operational use and the technical findings of an investigation report are different matters. Site management receives the clarified status together with the associated plans and outstanding next steps.
Method selection
Select methods according to the task and survey conditions
Historical records and aerial photographs
Historical aerial photograph assessment and other old records help place the basis for suspicion in its spatial context. The available images, their evidential value and the limits of the area considered matter. The absence of an identifiable indication must be distinguished from a technically surveyed ground area. The assessment is considered together with the planned intervention and other available findings. It can support the choice of a survey, but is not a measurement of the present-day subsurface or confirmation for all future works.
Understand aerial photograph assessmentMagnetometric survey
Magnetometric methods detect magnetic anomalies. Whether they can address the specific survey task depends, among other things, on the expected objects, ground conditions, interference and required survey area. Fences, utilities or existing structures may affect interpretation. A measurement signal is therefore not described as ordnance solely because of its strength. Method, interpretation and any further investigation are planned as a connected specialist task.
Understand the scope of magnetometryElectromagnetic methods
Electromagnetic investigations may be suitable for certain metallic target objects and site conditions. Suitability is justified for the particular task, rather than inferred from equipment availability alone. Interfering installations, accessible areas and the conclusion required must also be considered. Results are documented with their location and investigation conditions. Whether a supplementary method is needed follows from the technical assessment and remains a specific project decision. TDEM records time-dependent electromagnetic responses from electrically conductive objects.
Understand electromagnetic surveyingGround-penetrating radar
Under suitable conditions, ground-penetrating radar can provide information about subsurface structures and reflections. Ground conditions, moisture, installations and the particular investigation task affect interpretation. An anomaly is not automatically explosive ordnance, and an area without anomalies is not general evidence for arbitrary depths. The technical interpretation and limitations are documented with the commission. An investigation for other purposes is not adopted as explosive ordnance evidence without assessment. Highly conductive ground can limit its range.
GPR and limitationsDeep-ground and downhole surveys
For deeper groundworks, it may be necessary to establish whether a surface investigation can provide the required findings or another approach is needed. Preparation includes the location, depth, borehole layout and existing services. Creating access for the investigation must also be properly planned by specialists. A general depth figure or standard grid cannot replace that work. Findings remain limited to the areas actually investigated and the method used.
Prepare deep interventionsSurvey during construction
If a necessary preliminary investigation cannot be completed, it is assessed whether a technically planned approach during construction is suitable. This includes coordinated investigation, interpretation and communication of findings within the planned workflow. Visual observation during excavation is not an interchangeable substitute for a necessary survey. Site management needs a clear description of when specialist work takes place, how new findings are handled and which areas remain unresolved. Where the method is suitable, each working layer is technically surveyed and assessed before controlled removal in layers. Visual checks supplement the survey. The process continues to the agreed excavation base and, where necessary, along walls or slopes; the stop signal, authority to issue instructions and reporting channels are agreed beforehand.
Agree the approach during constructionTechnical assessment
Assess investigation possibilities for each construction condition
Compare existing reports with the as-built plans
The historical aerial photograph analysis and existing technical reports are compared with the known construction conditions. Not every statement relates to the same area or depth. Identify missing documents. Long use or previous alterations do not in themselves demonstrate that the ground is safe.
A document register links each report to its date, associated maps and the construction condition at that time. The current design shows the planned changes alongside these. Former and current building identifiers are matched spatially, as are changed property boundaries or differing elevation references. This enables the specialist planners to identify precisely which statement is to be used for an upcoming ground intervention. An unresolved correspondence is clarified using the relevant map or passage. The complete documents remain available to those involved in demolition and new construction. New findings from a construction phase are added with their area and status before being incorporated into further planning.
Check areas newly accessible after demolition
A surface survey may take place under different conditions when an area becomes accessible later. Whether this is sufficient depends, among other things, on remaining installations, interference and the investigation objective. The exposed area must be assessed by specialists and investigated where necessary; demolition alone provides no investigation result.
For the changed construction condition, the remaining surfaces, known installations and accessible investigation areas are described. The planned investigation objective remains tied to the actual depths and working volumes of the subsequent ground intervention. Using this information, the specialist company explains which approach is suitable and which prerequisites still need clarification. Work in stages is identified by its respective areas. The results report records which areas were investigated under the conditions actually encountered and what conclusion was achieved. Site management receives this spatial assignment together with the associated plan appendices so that it can relate the results to the upcoming work.
Plan investigation during groundworks
If ordnance surveying during construction is required, it must be coordinated with the groundworks as a technical specialist task. Visual observation during excavation alone is not equivalent to this. The DGUV explains this distinction; a suitable method and the necessary protective measures must be defined for the specific project.
The agreed sequence identifies the respective specialist tasks and the groundworks dependent on them, with their spatial references. For replacement construction in stages, it shows which area should be ready when and which feedback is needed for the next step. Those involved identify their contacts and provide the relevant plans. If the construction condition changes, the affected task is coordinated again before the next execution. The results handover describes both the areas actually investigated and investigations still outstanding. This keeps the respective status traceable when the executing company changes and makes it usable for subsequent work.
Next steps
Coordinate demolition, investigation and new construction
Compare existing structures and new construction
Show existing structures, new construction boundaries and differing depths together. Existing aerial photograph assessments, survey reports and official correspondence are checked with their complete plan appendices and related to the current areas and depths.
Define the scope of demolition
Identify activities involving contact with the ground and areas initially inaccessible. Where historical questions remain unresolved, supplementary records of past use are researched and suitable wartime aerial photographs assessed, where available. The indications and assessment limitations are assigned to the planned demolition and ground intervention areas.
Agree the investigation
Define when each area can be investigated and what preliminary work is needed. Method selection depends on the investigation objective, intervention depth, ground conditions, existing services, sources of interference and accessibility. Suitability and required preliminary work are explained for each area.
Investigate the agreed area
The specialist contractor carries out the commissioned investigation. Survey grids, necessary borehole locations and access for investigation are coordinated with the area, level reference, ground works depth and local conditions. Survey data and findings are spatially referenced; inaccessible sections and interference are recorded.
Assess findings and agree further work
The results are compared with the construction task. Anomalies, assessed findings and unresolved areas are identified separately. For confirmed explosive ordnance, recovery and further handling are agreed with the responsible bodies in accordance with the division of responsibilities in Lower Saxony.
Pass on the documentation
Hand over the results and unresolved areas to site management before subsequent groundworks.
Documentation
The report must identify the construction condition investigated
Findings and their scope
Document which area was investigated, when and under what conditions. Structures remaining in place and areas not covered must remain traceable. If these structures are removed later, it must be checked which conclusions need to be supplemented as a result. A report on accessible open areas must not appear to provide evidence for the entire developed property.
Project responsibilities
In Lower Saxony, municipalities are responsible for statutory hazard response; the state explosive ordnance disposal service supports them within its remit. The investigation commissioned from FONTANA-EOD must be distinguished from these official tasks. FONTANA-EOD documents the commissioned technical investigation scope. The competent authorities make the official decisions; additional hazards during demolition are assessed by the respective responsible specialists.
Working approach
How FONTANA-EOD works
Document the agreed specialist service clearly
We assess the planned groundworks against the available documents and their design revision. Before attending site, we agree with you what needs to be investigated, which areas are accessible and what findings are required. If the design or site conditions change, we check whether the agreed scope remains appropriate. The report states what was actually investigated and the limits of the findings. This allows designers and site management to see which findings they can use and where questions remain.
Discuss the investigation taskThe task before the equipment
We first establish the investigation objective: which question must it answer? We then select a technically suitable method. The availability of a particular device or experience on a similar neighbouring site is not enough to justify the choice of method on its own.
Keep limitations visible
Inaccessible areas and limited conclusions are identified. They do not disappear into a total area figure. Designers and site management can then decide specifically which areas still need attention and when a suitable survey becomes possible.
Clarify changes before intervening in the ground
A new location, additional depth or different construction method is compared with previous results. A familiar project name does not replace this comparison. Feedback is provided before the affected work so that an outstanding question can be included in the sequence.
Hand over the report and plan together
The technical conclusion remains connected to its location references and appendices. A brief summary helps orientation but does not replace the documented survey scope. This basis is retained even if site management or contractors change.
Understand the results
Use technical statements for the next decision
Read results together with their scope
A statement is understandable only with its investigation task. Check the area and depth described, methods used and restrictions. A report title or single result line is insufficient. For new work, these details are compared with the current plan to establish which knowledge remains usable and which question is unresolved.
Understand investigation reports and their limitationsUse project terminology unambiguously
Document review, surveying, construction-phase specialist work and recovery are different tasks. An enquiry need not identify the correct method in advance. An accurate description of the intervention and required decision is more useful. This establishes the appropriate technical scope and prevents a general term from meaning different things in design, procurement and execution.
Understand the service scopeDesign and findings
Documents for the next construction decision
Historical evidence and the current design
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessmentSpecialist reports for site management
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports
Further technical topics
Further technical information for your project
Determine the specialist service from the planned groundworks
Historical assessment, technical investigation and further work answer different questions. The service overview helps distinguish these tasks in an enquiry.
Compare servicesCoordinate the project sequence with everyone involved
Preparation connects the commission, site work and handover of findings. Changes to the project can then be incorporated into technical coordination in good time.
Process and documentationQuestions from planning
Questions about demolition and replacement construction in Hildesheim
Is the ground beneath an old building automatically investigated?
No. Whether an investigation took place and what it establishes must be clarified from the records. Earlier buildings, an existing basement or long-term use alone are not documented explosive ordnance evidence.
When must removal of old foundations be considered?
Already when preparing demolition. Location, depth and proposed working method affect which ground is disturbed. Explosive ordnance assessment should therefore not concern only the later excavation for the new building.
Can surveying take place only after demolition?
Demolition may make areas accessible that could not be investigated previously. But also clarify investigation needs for earlier work if that already disturbs the ground. Which investigation belongs to which demolition step must be agreed for your project.
What applies if the new building extends deeper than the old basement?
The additional depth affected must be compared with the existing investigation scope. The old basement outline alone does not answer this question. A sideways extension or deeper chamber may also create a supplementary task.
What should I do if I encounter an unknown object resembling munitions?
If possible explosive ordnance is found, stop work at the location immediately. Do not touch, move or expose the object further. Leave the immediate area, keep your distance and keep others away without putting yourself at risk. In Germany, notify the police immediately on 110 and follow their instructions. Inform site management and the client; internal reporting must not delay the emergency call. An enquiry form for planned construction projects is not an emergency reporting channel.
Can the negative result from a neighbouring school project be used for my site?
It describes the area investigated or assessed in the associated records. It does not automatically establish findings for another site. Even nearby, your own ground works plans and associated findings are decisive.
Is the summary in a development plan explanatory statement sufficient?
It can provide important initial orientation. Specific investigation planning requires the available original reports and associated plans. They show more precisely the areas, points, depths and methods underpinning the summarised findings.
Which factors determine the investigation scope and costs?
The demolition scope, size and depth of the new building, existing investigation reports, ground structure and metal interference determine the specialist task. Access, retained structures, investigation timing and required results documentation must also be considered. Areas not yet accessible are assigned to the later work step. When agreeing the quotation, investigations already carried out, outstanding quantities and necessary follow-up services are described separately.
Project enquiry
Discuss as-built plans and demolition planning
Plan revision and decision deadline
State whether the enquiry concerns early planning, preparation of procurement or an imminent ground intervention. The date by which a specialist assessment is needed helps coordination. Information still unresolved is explicitly identified rather than replaced with assumed values. Specify the groundworks starting first, construction time windows, maximum intervention depths and investigations already commissioned. Identify planned underpinning and foundation depths that remain unclear.
Assign records to their locations
Send a site plan and available reports with their associated appendices. For several construction phases, identify which document belongs to which area. Photographs supplement descriptions of access and existing structures; they do not replace information about underground structures or planned depths. Include official correspondence, conditions, service plans and ground investigation records or records of existing structures. Identify contacts and areas that are not yet accessible.
Investigation and construction sequence
Investigation and construction sequenceDocumentation for the next ground intervention
Documentation for the next ground interventionPut further project regions in context
Put further project regions in contextAgree investigation of anomalies and recovery
Agree investigation of anomalies and recoverySelect the specialist assessment for the project type
Select the specialist assessment for the project type
Have your project assessed
Whether historical aerial photograph analysis, explosive ordnance surveying, surface surveying using GPR, magnetometry or TDEM, deep-ground surveys, downhole surveys, excavation supervision, area clearance or ordnance recovery is needed depends on the location, ground disturbance, depth, ground and existing documents. An early ordnance assessment provides clarity for tendering, programming, occupational safety and construction.
FONTANA-EOD combines its Section 7 SprengG licence, specialists holding Section 20 SprengG certificates of competence, suitable survey and clearance methods, and traceable documentation. Send the site plan, depth of ground disturbance, construction phase and existing documents for an initial technical assessment.
