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Explosive ordnance surveying in Esch-sur-Alzette
When a former industrial site is redeveloped, some buildings often remain while new excavations and connections are created beside them. Explosive ordnance assessment concerns which activities actually disturb the ground. FONTANA-EOD helps define the appropriate specialist services for your project in Esch-sur-Alzette. Send the ground works plans and complete records of earlier investigations for an initial technical discussion.
Distinguish retention from ground disturbance.
Include work between buildings too.
Read the scope of each investigation.
Assess the construction project
How are retained industrial buildings and new ground works prepared together?
Show which buildings and foundations will remain and where new ground works will take place. Add connections, utility routes and excavations with their depths. Soil remediation and explosive ordnance investigation records are read according to their respective technical purposes. For the next work, what matters is which specific findings already cover its area and depth.
Project site
Connect the site with the specific construction task
Identifying the project location and proposed ground works in Esch
Esch-sur-Alzette is in the south of the Grand Duchy of Luxembourg. For Rout Lëns, the municipal plan identifies the Grenz neighbourhood on the French border, with reference to rue d’Audun and the connection to Audun-le-Tiche. For construction near the border, the project address, property boundaries and work areas actually affected are clearly recorded. For work on the French side, the responsible bodies and prerequisites there are established separately.
The official records describe historic industrial buildings, environmental questions and development of a new neighbourhood. For your project, your own ground works and the investigation status actually available are brought together. A planning note from the time or the start of new building work does not replace appropriate results documentation. The specialist task needed is agreed according to the specific areas, depths and local requirements. Further locations are listed in the regional overview. Also identify access roads, spaces between buildings and connections outside the later building. Current ground works plans and their associated reports are compiled on the same spatial basis.
For the regional context of your construction project, the Minette and southern Luxembourg overview provides further local information.
Local context
Wartime history, former industrial land and today’s ground works
The industrial site and present neighbourhood development
The history of Esch describes its military use during the First World War as the German Crown Prince’s headquarters and a major military hospital. For the Second World War, it records the population’s flight on 11 May 1940 and liberation on 10 September 1944. Mining and steelmaking also shaped transport routes, operational sites and buildings. Historical research assesses these local periods alongside maps, aerial photographs and records for the specific property. What matters is which reliable indications can be assigned to today’s ground works area.
The municipal plan for the ‘Rout Lens’ PAG amendment dated 28 September 2018 proposed retaining individual industrial buildings and integrating them into the neighbourhood alongside new development. It also addressed environmental investigations and remediation of the former industrial site as prerequisites for development. In July 2024, the city reported the start of construction of the first buildings in cooperation with IKO Real Estate.
Distinguishing soil remediation from explosive ordnance assessment
These records describe different stages of neighbourhood development. Retention of a building, environmental remediation or a construction start announcement establishes nothing about a completed explosive ordnance investigation. Preparation of your own work depends on which reports actually exist and whether they cover the respective ground works.
The requirement at the time to coordinate with SEDAL
For the ‘Lentille Terres Rouges’ project, Luxembourg’s environment ministry explicitly required in its statement of 22 August 2019 that unexploded ammunition from the First World War be addressed in the environmental report, in close coordination with SEDAL. This was separate from the requirements to investigate and remediate soil contamination. The letter defines what the report at the time was to clarify; it does not document completed explosive ordnance clearance. When using older remediation records for new ground works, therefore, also ask for later statements and investigation results concerning explosive ordnance. Their spatial reference and scope must fit the proposed ground works. The requirement from this procedure cannot be applied to other properties in Esch.
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 municipal plan of 28 September 2018 describes the proposed retention of industrial buildings; the notice of 3 July 2024 documents the construction start at the time. The environment ministry statement of 2019 addresses explosive ordnance as a separate investigation need. The city’s PAP information explains the associated plan types and components.
The BFR KMR guidelines on clearance planning explain how the task and approach relate; the guidance on geophysics describes survey conditions and the limits of methods. The BFR documentation requirements relate the evidence to the actual scope of services. The Luxembourg Army describes the state’s handling of found ammunition.
The BFR KMR are used as technical guidance; locally applicable requirements and responsibilities must be clarified separately.
For work in Luxembourg, the locally applicable prerequisites for the specific activity are checked before it begins. The Guichet.lu portal explains occasional and temporary service provision in Luxembourg and the posting of employees. The necessary notifications and evidence relate to the type of service and personnel deployment. German technical guidance does not replace these Luxembourg requirements. German permits and certificates of competence under the Explosives Act belong to the German regulatory framework. The permitted scope of activity in Luxembourg is determined by the applicable local prerequisites and required coordination.
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. Documents needed for an official procedure are determined by the site, project and requirements of the competent body. The technical report describes the specialist service completed with its documented area, depth and service scope. The respective competent bodies make official decisions.
In Luxembourg, the Service de déminage de l’Armée luxembourgeoise, SEDAL, deals with found ammunition. The army identifies its tasks as identification, assessment, neutralisation and destruction. The police receive urgent danger reports on 113. For the planned specialist investigation, tasks, contacts and necessary prerequisites are agreed before work begins. Site management keeps these contacts available to those involved and refers any find to the responsible state authorities.
Investigation task
Which specialist task comes next?
Accounting for survey conditions on an existing site
Metal installations and known foundation remains may affect the investigation. A suitable method is therefore defined from the investigation objective and actual conditions. Provide available as-built plans and identify uncertainties. Limitations are discussed before work and documented in the results so that site management can understand the scope of the findings for its next activities.
Compare suitable specialist servicesPreparing the involvement of responsible bodies
For the private technical service, Luxembourg prerequisites and the permitted scope are clarified before commissioning. SEDAL is responsible for found ammunition; state guidance also identifies the police on 113 as a contact. Planned project coordination and an urgent find report retain their different purposes. The intended contacts are communicated clearly to those carrying out the work.
Compare investigation methodsProject types
Coordinating existing structures, remediation and new ground works clearly
Identify what each earlier investigation covers
A former industrial site may have several reports prepared for different purposes. Collect the complete reports and identify the subject of each. Historical evidence, soil contamination and explosive ordnance need to be distinguished. A shared project name or an earlier remediation phase does not establish that every ground intervention planned today is already covered by the necessary assessment.
Record the commission, date and investigation area for each report. A soil remediation plan may describe excavation and fill, whereas an ordnance survey report defines its own measurement areas and interpretation limits. The technical planning needs both sets of information if today's excavation reaches different soil layers or adjoins retained foundations.
Sort reports by the purpose of the investigation
Describe the working areas beside retained buildings
New utility lines or connection pits may occupy areas used differently when the earlier buildings were in place. Show their positions and depths together with known foundations. The investigation is tailored to the specific task, taking account of access, buried structures and interference. Retaining a building does not, by itself, support a general assessment of the ground around it.
For an investigation between retained halls, record paved surfaces, available passageways and neighbouring areas still in use. State which obstacles are known and which dimensions still need to be established. The investigation can then be specified for the accessible areas and the findings that can be obtained there.
Compare specialist servicesHand over results with their actual scope
The documentation should identify the technical question addressed and the area investigated. The planning and site management teams receive the maps, appendices and limitations together. Results from soil remediation and ordnance investigation can then be used in the same project file while retaining their separate meanings and documented limits.
At handover, bring together the drawing revision, the area covered and the intended subsequent ground intervention. If, for example, a connection route changes after the investigation, assess what additional work the revised section requires and record that assessment. Results that remain applicable are retained; outstanding areas are identified together with the technical work still needed.
Document findings and their limitationsPreparation
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 programme distinguishes tasks already technically resolved from prerequisites still outstanding. If an area will be only partly accessible, account for this when commissioning work. Results handover and assessment also need time in the construction programme. Agree timing and the work required once scope, access, documents, construction conditions and the date a decision is needed are clarified.
Discuss the scope and scheduleTasks at the site
Where groundworks may be needed even when buildings are retained
01
Connections outside the building
A retained building may need new utility connections. The associated trenches and shafts may lie outside previously investigated areas. Show their routes separately and specify the planned depths. An investigation for a neighbouring excavation cannot be applied to these works without checking its coverage.
02
Work on the foundations
State whether the alterations affect only above-ground components or also foundations, basements and deeper connections. The term “renovation” alone is too imprecise. Existing construction drawings can help; unknown dimensions must be recorded as unresolved planning matters rather than assumed facts in the commission.
03
New excavations beside existing structures
Access between retained structures may be restricted. Foundations and other metal installations may also affect measurements. The investigation must be planned around these conditions. This does not justify independently exposing or removing components that have not yet been identified.
04
Identify what remediation reports actually cover
A report on soil contamination answers different questions from an ordnance assessment. Check the subject of each document. Even where they cover the same area, their findings are not interchangeable. Site management must be able to see which works and risks each report addresses.
Project documents
Documents that establish the next step
Record foundation connections and new excavations separately
Continued use of a building may still require new ground interventions. Specify underpinning, connections and pits with their actual planned depths. Compare these works with the existing findings. A drawing of the final arrangement alone often does not fully capture the additional groundworks needed during the conversion when preparing the investigation.
Coordinate the sequence of technical work
Soil remediation, recording existing conditions and ordnance investigation can affect one another's access and working areas. Provide the proposed sequence and identify the responsible technical planners. Before each intervention, establish what information must be available. The sequence used on another project does not provide general authorisation to carry out earlier groundworks without considering the evidence for this site. The ordnance survey report links the investigation brief, measurement data, assessment of findings and results plan. Where clearance work has actually been carried out, the clearance record documents its areas, depths and scope. The conclusion relates the usable results and unresolved questions to the next groundworks.
Construction sequence
Coordinate investigation and construction sections
Submit the as-built plan and reports together
Provide the current design showing retained structures, new utility lines and all ground interventions. Include the existing reports and their maps. State which works are to take place first. The initial coordination relates the available findings to the specific task and identifies missing documents or additional technical work that must be clarified before those works.
Begin the next construction phase with the complete results
Match the reports to the actual planned working areas. Check coverage again if connections change or depths increase. Site management receives the relevant appendices and remaining limitations together. An earlier remediation or construction phase remains useful as a documented record, without extending its conclusions to further areas or new ground interventions without checking them.
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
Determine the investigation needed from the planned works
Review former use and existing records
A historical aerial photograph analysis can contribute to the assessment of a site alongside existing drawings and reports. Former industrial use alone does not establish the presence of explosive ordnance. Further planning depends on the evidence reviewed and the technical questions that follow from it. Existing findings should be used where they cover the intended working area.
If reliable historical evidence is missing, commission the necessary research, including suitable aerial photographs, as a separate technical task. Consider the origin, capture date and spatial resolution of the material. Record demolition, fill and later utility installations as additional stages in the site's history. An assessment of suspected explosive ordnance contamination explains which indications need to be followed up and where the information available is insufficient for a conclusion.
Account for existing structures when planning measurements
For surveying, access, interference and the investigation objective are among the deciding factors. Agree which areas can be assessed under the existing conditions. Areas that were not investigated or could not be interpreted must be identifiable in the report. A limited investigation cannot support a general conclusion for the whole neighbourhood.
Method selection relates target objects and intervention depth to soil structure, moisture, utility lines and interfering metal objects. Geomagnetic surveys, electromagnetic methods and ground-penetrating radar measure different physical properties. Deep foundations may require additional investigations or a deep survey. Clearance for a borehole relates to its position, depth and the technical service agreed for it. The scope documented for that point remains identifiable even if the design later changes.
Coordinate the investigation with the conversion sequence
A clearance plan can link the necessary technical work to the conversion and new-build sequence. It should clearly identify each ground intervention and the limitations that remain. General observation of earthworks does not replace an investigation required beforehand. The procedure and responsibilities must be agreed specifically for the project in Luxembourg. The technical scope of explosive ordnance recovery is coordinated with the responsible authorities for the project in Luxembourg.
For area clearance, recovery and ordnance supervision during excavation, clarify the tasks that may actually be performed and the responsibilities of the public authorities in advance. Agree the technical supervision specified for the earthworks with site management and the contractors. If a suspicious object is discovered, stop work in the affected area and inform the police or SEDAL. Record the authorities' handling of the find alongside the company's investigation results and subsequent construction progress so the sequence remains traceable.
Next steps
What helps with initial coordination in Esch
Identify retained and new components
A combined site plan should show which buildings will remain and where new ground interventions are planned. Include sections, planned connections and known underground structures. This shows where conversion and new construction affect the same area and where separate technical tasks arise. At first contact, agree the project location, the next groundworks and the date by which a decision is needed.
Include the right plans for the property
The City of Esch distinguishes PAP plans for existing neighbourhoods from those for new neighbourhoods. A PAP NQ comprises written and graphical sections together with an explanatory report. Use the documents applicable to your property. A general project description replaces neither that check nor a technical investigation. Existing ordnance records are checked for their origin, areas and depths. Where the historical evidence is incomplete, arrange the necessary research, including suitable aerial photograph interpretation.
Obtain previous results in full
Obtain existing ordnance reports with their site plans, results and limitations. Keep them available separately from contamination and geotechnical records. For each earlier service, it should be clear which area and question were investigated. Missing maps or appendices make comparison with the new ground intervention harder. On this basis, select the appropriate method for the investigation objective, soil and interference. Carry out the agreed survey or technical supervision and assess what its findings establish and which limitations remain.
Resolve outstanding questions before work starts
Discuss which questions must be answered before the first ground intervention. If new connections or deeper components are added during planning, check the investigation scope against them again. Usable earlier work remains an important basis; a change does not automatically require a complete repeat. Hand over the report, maps and, where applicable, clearance record for the documented scope. These establish which results can be used and what further technical steps are needed before the next intervention.
Documentation
Technical services in Luxembourg and the authorities' handling of finds
Findings and their scope
For your project in Esch-sur-Alzette, FONTANA-EOD agrees with you which investigation services are needed and which it can undertake in the specific case. Preparation includes the local requirements and necessary coordination. A private technical service must be distinguished from a decision or action by the public authorities.
Project responsibilities
The Luxembourg Army describes SEDAL's tasks as including the identification, neutralisation and destruction of found ammunition. If a suspicious object is found, safe reporting is essential. Neither a contamination report nor general construction planning alters that responsibility. Germany's BFR KMR may explain technical principles but do not apply directly in Luxembourg.
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 reports in light of the question investigated
Check whether a report addresses soil contamination, ground conditions, existing structures or explosive ordnance. Consider its geographical scope and supporting appendices. A general description as an expert report or remediation certificate is insufficient for the next construction task. Keep each technical conclusion available with its purpose so it can be used appropriately in the coordinated planning.
Understand investigation reports and their limitationsKeep retained components identifiable throughout the project
Use consistent identifiers for buildings, foundations and connections in the as-built plan, ground intervention design and results report. If an identifier changes, retain a traceable link to older records. Different parties can then base their work on the same locations and identify which investigation already covers their task and what further work is needed.
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, describe the planned groundworks and the investigation results needed for them. Operating conditions for industrial and infrastructure projects are coordinated with the technical planners involved.
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 redevelopment sites in Esch-sur-Alzette
Does former industrial use establish suspected ordnance contamination?
No. The site's history may inform the assessment, but it does not prove ordnance contamination of the particular property. The deciding factors are the professionally assessed information and its geographical relevance. The process combines a review of existing records and any necessary research with method selection, investigation, assessment and documentation.
Does soil remediation replace an ordnance investigation?
Not automatically. It depends on which question the work investigated. A report on soil pollutants must be distinguished from an ordnance report. Check existing results against the scope they actually cover.
Are retained buildings excluded from the planning?
Retaining them does not, in itself, exclude them. New connections or foundation work may affect the ground. Describe these interventions separately and distinguish them from work carried out entirely above ground.
Can an older report be used for new connections?
Yes, if its conclusions cover the new route and the planned depths. The complete report and current design are needed. Where areas or limitations differ, clarify the additional work required. Before the planned ground interventions, agree the investigation requirements with the specialist contractor and the local requirements with the responsible authorities.
What should you do if ammunition is found in Esch?
Do not touch or move the object and stop work in the affected area. From a safe distance, notify the Luxembourg police on 113 or SEDAL. Do not take the object to a recycling centre. Follow the authorities' instructions.
How are areas that could not be interpreted shown in the results?
The report must identify areas that were not investigated or could not be interpreted. These limitations remain visible during subsequent redevelopment planning. A limited investigation does not support a general conclusion for the whole neighbourhood; the further findings needed must relate to the specific next intervention. Paving, utility lines and metal installations can restrict measurement and interpretation. Explain what can be established under these conditions for the planned works.
What determines the amount of investigation work?
Area, depth, research needs, access and interference determine the work involved. Method selection, interpretation and documentation also contribute, as does further investigation of findings where necessary. Agree scope and costs against the specific construction task and existing results. Usable earlier reports help limit additional work to the questions that actually remain unresolved.
Does the start of new construction establish the investigation status of the whole site?
No. The deciding evidence is the complete set of technical results for the specific planned ground intervention.
Project enquiry
Prepare the first technical discussion
Show existing structures and planned interventions
Define the locations of retained structures, new connections and excavations. Include the address, plot, depths, existing investigation appendices and applicable drawing revision.
Organise reports by technical subject
Provide the respective soil contamination, geotechnical and ordnance reports. Identify known utility lines, access, construction dates and the decision needed before the ground intervention.
Project process and documents
Project process and documentsMethods and technology
Methods and technology
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.
