Project pathway
The quickest route to the right decision.
Explosive ordnance survey in Bonn
Who receives the official analysis, and who passes it to the planning team and site management? These routes must be clarified for a construction project in Bonn. FONTANA-EOD supports you in comparing existing evidence with the planned groundworks and preparing the specialist commission. Authorisation to act in the official procedure and commissioning an investigation are separate steps.
Clarify representation and points of contact.
Keep results together with their attachments.
Mark new structures, areas and depths.
Assess the construction project
Clarify representation and the specialist task separately
For the Bonn aerial imagery enquiry the correct map base is important: the city requires a suitable map showing plot boundaries, at least two legible street names and a clearly marked investigation area. According to the city's guidance, an ordinary construction or site plan is insufficient for this initial application. The later application for ordnance investigation, however, also requires a site plan of the proposed building.
Bring together the aerial imagery analysis, its maps and the current construction plans. If the result is to be sent to a planning office or other third parties, Bonn specifies a signed authorisation for this purpose. This entitlement to receive documents and the technical investigation commission serve different functions. We clarify with you which specialist service suits the proposed groundworks and existing results.
One local example is the ordnance specialist supervision of groundworks at Bonn-Beuel station. The specialist scope is explained under ordnance specialist supervision of excavation. For your project enquiry send the construction areas, depths of groundworks and existing investigation results with their attachments.
Project references
Selected project examples
Bonn Beuel station, 53225 Bonn
Service period: 2025-08
Service areas:Ordnance specialist supervision of groundworks
View project details · Ordnance specialist supervision of groundworks
Bonn, S 13
Service period: 2024-06
Service areas:Ordnance specialist supervision of groundworks
View project details · Ordnance specialist supervision of groundworks
Project site
Connect the site with the specific construction task
Keep the Bonn procedure tied to the full project context
The city of Bonn describes how aerial imagery analysis is passed to owners or authorised third parties. For subsequent project work, the findings, maps and current construction plans must correspond. Keep the roles involved and the proposed groundworks separately traceable. Entitlement to receive documents, the specialist investigation task and the documented result each remain identifiable with their own scope.
Bonn is an independent city in the Cologne administrative district in North Rhine-Westphalia. Project locations in the city centre and station area, Beuel, Bad Godesberg, Dottendorf, Kessenich, Poppelsdorf, Endenich, Tannenbusch, Buschdorf or Dransdorf are assigned to the specific project through the address and plot. Also state the exact location of structures and routes on the right bank of the Rhine. For projects in Alfter, Bornheim, Sankt Augustin, Königswinter, Siegburg or other places in the Rhein-Sieg area, the local authority responsible is determined by the actual project location. The place name supports comparison of documents and does not in itself indicate ordnance contamination. For a different project location, the regional allocation of ordnance investigation helps prepare the enquiry.
Local context
Connect historical evidence with present-day construction areas
Receiving results under the Bonn procedure
The Federal City of Bonn explains that aerial imagery analysis results are sent to property owners. If the result is to go to third parties, it requires a signed authorisation. The enquiry also needs a suitable map with identifiable plot boundaries and a clearly marked area. The city's current guidance determines the submission details.
The Bonn University Archive documents the severe air raid of 18 October 1944 and destruction of university buildings. Clearance of debris and reconstruction began after the war ended. For present-day groundworks, available historical imagery, building records and information on later changes are related to the area actually affected. The recorded historical context provides the basis for research; specific investigation needs follow from the property documents and planned groundworks.
Keep documents together when those involved change
When an administrative or commercial building is altered, the owner, user and planning office may have different contacts. Establish who provides the complete documents and answers questions. Also check whether the existing report and its attachments cover the current project.
Records of former industrial and commercial uses, railway and route corridors, bridge ramps or bank protection works are compared with present-day construction plans. This also applies to repurposed administrative buildings or former federal property, conversion sites and older housing. Documented relocation of rubble, filling, demolition or renewed infrastructure works may have changed the present ground composition. What matters is which of these events are documented for the specific property and which ground areas and volumes the new foundations, utilities, shafts or access routes affect. Outstanding questions for historical analysis and further investigation are derived from this.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For the commissioned work, the applicable technical requirements, permits, competence and responsibilities are clarified. The actual scope of work is what matters. Tasks and interfaces are described for the project and checked against the required authorisations.
Link occupational safety to the construction sequence
The risk assessment, work areas and communication arrangements must suit the planned activities. Specialist explosive ordnance work is coordinated with the other construction activities. Site organisation, traffic safety and other technical assessments retain their own responsible parties. Joint coordination assigns the relevant specialist work and responsibilities to the affected construction sections.
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.
The Federal City of Bonn explains the application route, map documents and receipt of results. The KampfmittelVO NRW governs state duties and the conditions for certain private activities.
The principles of clearance planning connect the investigation task with subsequent work. The specialist geophysical principles help with specialist method selection. The BFR KMR documentation requirements assign results to the areas treated. The official North Rhine-Westphalia guidance explains supplementary requirements for permissible private activities. The DGUV FAQs on explosive ordnance clearance distinguish professionally planned explosive ordnance clearance from visual observation alone.
The BFR KMR describe specialist work on federal property. The locally applicable requirements and responsibilities are determined separately for the Bonn project.
The permit, qualifications 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 addresses preventive investigation and clearance of conventional explosive ordnance and defines its scope. The references it explains to DGUV Regel 113-003 concern specific activities involving explosives; they are not applied indiscriminately to every construction investigation.
For private activities in North Rhine-Westphalia, the specific requirements of the exceptions under the KampfmittelVO and the official guidance must be observed. The private contract connects technical suitability with the scope provided for in law. The authority's state of knowledge and the permissions required for the activity are checked before an agreement.
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 carries out the agreed investigation and documentation work. Requirements and decisions of public authorities are addressed with the responsible bodies. The documents needed for a particular procedure depend on the location and project. The technical report describes the work carried out, including its documented area, depth and scope. Decisions reserved for public authorities are made by those authorities.
In Bonn, the local public order authority is responsible for hazard prevention. It is supported by the state explosive ordnance disposal service (KBD) at the Düsseldorf District Government, which serves the administrative districts of Düsseldorf and Cologne.
The local authority receives the enquiry for aerial imagery analysis and arranges the state work required. For the subsequent project, the result notification received and the measures specified in it are considered together. A private specialist contractor receives a separate commission for the task actually permissible. Checking authorisations, service scope and existing state findings forms part of this preparation. For a project outside Bonn, municipal responsibility follows the specific municipality. The need for further ordnance recovery is clarified with the competent authorities according to the findings.
Investigation task
Which specialist task comes next?
Assign existing results first
The starting point is the complete report and the area actually covered. An owner's details or address alone do not establish the scope. Compare existing maps with the current site plan and proposed depths. Unclear boundaries are clarified before the service scope is defined and are not assumed to be an area already investigated.
Assess historical documentsDescribe the supplementary commission specifically
Only the comparison identifies which specialist question remains outstanding. For this task, possible methods, accessibility and known installations are considered. The permissibility of private activity in North Rhine-Westphalia is checked separately. Authorisation for communication with the authorities replaces neither this assessment nor the agreed service scope.
Compare investigation methodsProject types
Retain documents across changes in responsibility
Complete handover when ownership changes
When a property is handed over, existing reports with their maps and attachments should remain available. An extract or brief note in the handover record often does not identify the investigated area. Assign each report to the project and plan revision used at that time. Only then is it assessed whether the present construction plans lie within its scope of findings.
Document findings and their limitationsIdentify authorised representatives and specialist planners
The person entitled to receive the official result must be distinguished from the person preparing a technical task. Record both roles clearly. The authorisation specified for Bonn enables third parties to receive results. It establishes neither an agreed investigation scope nor an official decision on the current construction work.
Coordinate the sequence and tasksDo not separate attachments from the report
A results notification without its associated map may lose essential area boundaries. Send the complete version, including attached plans. Missing attachments are identified as outstanding and requested. A newly drawn property outline does not replace the original mapping basis and must not implicitly extend its findings.
Document findings and their limitationsPreparation
Prepare the scope and commission together
Before commissioning, the investigation required, the specific stage of the Bonn procedure and the private activity permissible for it are determined. Describe the planned groundworks and the findings required for this purpose.
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 realistic programme distinguishes technically resolved work from prerequisites that are still outstanding. If only part of a site will be accessible, the commission must take this into account. Handover and assessment of the results also need time in the construction programme. The schedule and effort are agreed once the scope, access and prerequisites are clear. This coordination brings together the specified scope, access, documents, site conditions and the date by which a decision is needed.
Discuss the scope and scheduleTasks at the site
Coordinate representation, documents and construction
01
Owner and representation
Identify the responsible contacts and clarify who submits official enquiries or is entitled to receive results. A private specialist commission and representation before the authority are different processes. Clarify these tasks with the planning office appointed before the enquiry.
02
Existing property documents
Bring together earlier analyses and investigation reports, including maps, attachments and file references. Check whether each report is complete and note missing attachments. A shortened summary may omit important limitations. A report from an earlier project phase must be assessed according to its actual investigation scope.
03
Changed use and new structures
If, for example, an existing building is extended or given different infrastructure connections, describe the groundworks being added. Additional foundations, shafts or service connections may extend beyond the earlier task. Even where use changes, it must be clear which work actually enters the ground.
04
Handover for construction
Establish which documents the next contractor needs and which tasks remain outstanding. At handover, explicitly identify parts of the site still unresolved. State the plan revision and findings applicable to each work area.
Project documents
Documents that establish the next step
Give planners the same document revision
Architects, specialist planning and site management need a common basis. Identify the relevant files by date and plan revision, and communicate changes explicitly. Central filing helps allocation but does not replace specialist assessment of the findings contained. Different versions remain identifiable until their relationship is clarified.
A common document list identifies report titles, dates, file references, plan revisions and associated attachments. The relevant results map stays with the report and is compared with the current groundworks drawing. Amended documents are passed on with dates; superseded plan revisions remain identifiable as such. New project management can then trace the evidence on which an earlier decision was based. A missing attachment is identified specifically and requested from the issuing or supplying authority or party. The further investigation commission is prepared on the findings actually available. Measurement data, survey results and assessment of findings belonging to the commission are brought together with the complete report and its plan attachments. After clearance work has been carried out, the clearance record, including its scope, results and remaining limitations, supplements the documents for the construction phase actually treated.
Update project representation
If the person handling the work changes, availability and authorisation for further communication must be clarified. Official results already available are handed over in full. Such an organisational change does not alter an investigation boundary. New structures or depths are independently checked against existing results on specialist grounds.
When ownership or the planning office changes, entitlement to receive documents and specialist responsibility are updated. The city of Bonn requires a hand-signed authorisation to send aerial imagery analysis to third parties. For a property acquired only recently, it also specifies a relevant extract from the purchase contract as evidence of current ownership. These documents are compiled specifically for the municipal procedure. Specialist reports, survey plans and outstanding tasks are additionally passed to those entrusted with further construction planning. Organisational change and a change in the investigation task remain distinguishable.
Construction sequence
Coordinate investigation and construction sections
Before taking over an ongoing project
Prepare an overview of existing official letters, technical reports and missing attachments. Identify who can answer questions and obtain the documents required. New site management also receives the documented limitations. A brief note that a procedure has been completed is insufficient preparation for groundworks.
Before a new service agreement
Define the actual groundworks and the scope of findings wanted. Identify available results and their gaps. A specific specialist task is agreed under the applicable conditions. Assuming that previous owners arranged everything does not replace a traceable assessment of the present-day project.
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 can be suitable for particular metallic targets and site conditions. Their suitability must be explained for the task, rather than inferred simply from the availability of equipment. Interfering installations, accessible areas and the findings required must also be considered. Results are documented with their location and survey conditions. The specialist assessment determines whether a supplementary method is needed; this remains a project-specific decision.
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 survey task affect interpretability. An anomaly is not automatically ordnance, and an area with no apparent anomalies is not general evidence for arbitrary depths. The specialist interpretation and its limits are documented with the instruction. A survey for another purpose is not adopted without checking as ordnance evidence.
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, the specialists assess whether a planned approach during construction is suitable. This includes coordinated investigation, interpretation and communication of findings within the intended work sequence. Visual observation of excavated material is not an interchangeable substitute for a necessary survey. Site management needs a clear description of when specialist work will take place, how new findings will be handled and which areas remain unresolved.
Agree the approach during constructionTechnical assessment
Compare existing results with the new groundworks
Which area the aerial imagery analysis covers
The historical aerial photograph analysis is a source of information with a spatial reference. Compare this area with the proposed excavation, foundations and infrastructure works. If property boundaries are crossed or additional structures are planned, these differences must be apparent during preparation.
For the official enquiry, Bonn requires an extract from the cadastral map or a comparable map showing plot boundaries. The scales specified by the city range from 1:1000 to 1:5000; at least two street names should be legible and the area covered by the enquiry clearly marked. A postal address alone is insufficient for this spatial allocation. The current construction plan supplements the specialist enquiry, while the map type required for the official procedure is compiled separately. Several spatially separate parts of the site each receive a clear reference.
Define survey methods and investigation scope
The survey depends on the findings required and actual conditions. Existing installations, sources of interference and depths of groundworks must be considered. An earlier notification does not automatically determine the survey method. What matters is the findings it contains and the information the planned investigation is intended to provide.
Existing results are compared with present-day construction plans: where are new piles, retaining elements, footings or utilities located, and from which surface is the depth stated? A changed ground level or working platform is identified on the plan. Borehole starting positions shifted sideways may also affect additional ground areas and volumes. If a part of the site has limited investigability because of dense installations, its location and specialist significance are documented. Method selection considers ground conditions, interference sources, target objects and the findings required. Investigation and interpretation are described as a connected specialist task.
Distinguish authorisation from the specialist commission
An ordnance specialist supervision of excavation does not replace an investigation required by the authorities. Responsibilities and the limited private activities under the North Rhine-Westphalia KampfmittelVO must be considered before commissioning. Even a complete authorisation changes neither these specialist prerequisites nor the statutory boundaries of responsibility.
Ordnance specialist supervision of excavation is prepared according to the specific findings available and the permissible conditions under state law. A professionally justified scope of supervision describes work sections, investigation, interpretation and communication of findings. The person responsible for construction connects contractors with the competent authorities. Existing opportunities for an advance investigation directed at the required findings are taken into account. For the forthcoming construction decision, it must remain clear which question the supervision answers, which results are available and what further investigation or coordination needs follow. Changes to the programme are communicated before the affected work.
Next steps
What is needed for the enquiry
Initial contact and document review
At initial contact, identify the property, planned groundworks and the date by which a decision is needed. The owner, representative and specialist project contact are assigned their respective tasks. Existing analyses and reports are assessed in full with maps and attachments. If substantiated historical evidence is missing, the aerial imagery analysis required is initiated through the local authority with the state KBD. Where questions about use or ground conditions remain outstanding, supplementary historical records and available imagery are researched and analysed. They assign existing indications to the actual project area.
Define the investigation task and method
The proposed structures, areas and depths are identified on the current plan and compared with existing results. This establishes which further findings are needed. A suitable method is selected according to ground conditions, target objects, interference and accessibility. State measures and permissible private tasks are assigned to the respective procedure. The private commission describes the specific investigation and expected results documents. Authorisation for contact with the authorities retains its separate function.
Carry out and assess the investigation
The agreed survey or professionally justified supplementary supervision is carried out under the conditions specified. Data and observations are interpreted and assigned to the area investigated. Anomalies, usable results and parts of the site with limited interpretability remain distinguishable. Further clarification is agreed according to the findings with those responsible and, where necessary, the competent authorities. Plan changes or changed access are communicated before the affected work. The previous state of knowledge remains traceable in the project record.
Document findings and prepare the subsequent decision
The report and plan attachments identify the areas, depths, methods, findings and limitations actually investigated. The complete documents are passed to those responsible for further planning and site management. Before the next construction phase, its groundworks are compared with the documented scope. Specialist additions and official steps required are assigned to the areas still unresolved. Attachments remain together when the parties involved or ownership change. A suitable existing investigation can continue to provide a basis; new structures are compared separately.
Documentation
Pass complete reports to those involved next
Findings and their scope
FONTANA-EOD documents the agreed investigation and its results. Pass on the report with its associated plans so that companies joining later can also identify its findings and limitations. A change of owner or a new commission does not extend the investigated area.
Project responsibilities
Assign official notifications and technical reports to the respective plan revisions and construction phases. Record outstanding questions separately. The evidence can then be found again and professionally assessed when questions or plan changes arise.
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
An authorisation has a specific purpose
Entitlement to receive documents and a commission for specialist investigation concern different matters. Describe each task explicitly. This makes it clear which communication is possible and which service still needs agreement. An arrangement for representation is not understood as general clearance for construction work.
Understand investigation reports and their limitationsCompleteness before summary
A short summary helps with orientation, but must be based on the complete documents. Maps, investigation boundaries and limitations remain available. Those continuing the planning later need this evidence. Passing on a shortened statement about earlier groundworks does not turn it into a broader statement about the entire property.
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 subsequent work answer different questions. In your enquiry, identify the planned groundworks and the information needed to prepare them.
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 documents and commissioning in Bonn
Can the planning office receive the Bonn aerial imagery analysis directly?
The city requires a signed authorisation from the property owners to send it to third parties. The city's current requirements are decisive. Before the enquiry, clarify who is to receive the result and use it for further project work. The enquiry is submitted early during planning, before the proposed groundworks; the local public order authority arranges involvement of the state KBD.
Is a report without maps and attachments sufficient?
Without the attachments, it may not be possible to identify which areas were investigated and what the results relate to. Obtain missing parts or explicitly identify the gap before using the report to plan further investigations. Complete results are needed for the specialist comparison. A summary can explain their content, but replaces neither maps nor documented boundaries and limitations.
Is an authorisation also a commission for FONTANA-EOD?
Representation before the authority and the private specialist commission each have their own function. FONTANA-EOD's service scope is aligned with the task actually permissible and necessary. Document assessment is followed by specialist method selection, investigation or suitable supervision, assessment and documentation. Before the next groundworks, the results are compared with the proposed construction work.
Does old evidence remain valid after a change of owner?
A change of owner alone does not change the documented content. Whether existing evidence can be used for a new project depends on location, depths, previous limitations and current plans. A new construction project therefore requires a comparison of the substance of the evidence.
What should I do if I find a possible item of ordnance?
Stop work in the affected area, keep your distance and leave the object untouched. Report the suspected find immediately to the police by calling 110 and follow the authorities' instructions. A project enquiry to the company does not replace reporting the find. Warn others without putting yourself in danger and keep the affected area clear.
What should be handed over to new site management?
Complete official and technical documents with maps, attachments and plan revisions. Outstanding questions, planned changes and contacts for further clarification are also identified.
Which factors determine effort and costs?
The decisive factors are the investigation area, depth of groundworks, suitable method, accessibility, sources of interference, preparatory work and results documents required. Existing complete reports help define the additional information needed. A quotation describes the permissible private tasks and their conditions. Changed structures or additional areas are compared with the agreed scope and coordinated separately if further work is needed.
What is agreed first if attachments are missing?
First, it is clarified which documents are missing and who can obtain them. A specific investigation is prepared according to the information actually available and the current construction task. The method is defined according to ground conditions, target objects, depth and interference. Areas with limited interpretability remain documented with their boundaries.
Project enquiry
Prepare ordnance investigation for your Bonn project
Identify recipients and representation
Identify the owner, authorised person and specialist contacts with their respective tasks. Add the address, plot, construction phase, timeframe and decision required. For a route or list of borehole positions, identify the location and respective depth of groundworks.
Send complete results
Include official letters, reports and all map attachments, together with the current location and depth plan. Describe the earthworks due first, obstacles and parts of the site not yet accessible. Existing utility, ground investigation and as-built documents form part of the comparison. Describe your operational or infrastructure project context with its access and operating conditions. Further project locations: Aachen, Cologne.
Ordnance investigation process
Ordnance investigation processHand over documentation with its attachments
Hand over documentation with its attachments
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.
