Project pathway
The quickest route to the right decision.

In road reconstruction, the deepest ground interventions are not necessarily beneath the carriageway. A shaft, retaining wall foundation or new planting area may also matter for ordnance assessment. FONTANA-EOD helps projects in Lüdenscheid define the location and depth of the planned work.
Describe the planned build-up and material removal.
Add point-specific and lateral ground interventions.
Distinguish existing ground levels from new plans.
For road reconstruction in Lüdenscheid, the carriageway, shafts, retaining walls and further groundworks are considered within their actual scope. We compare the planned ground interventions with existing findings. Specialist preparation traceably includes ancillary areas, depths and construction changes.

The town of Lüdenscheid identifies its legal, public safety and public order department as the contact for ordnance matters and recommends assessment before the building application. Its service page requires clear property identification on the Deutsche Grundkarte. Actual groundworks and associated plan versions are added for specialist coordination; road design alone is not ordnance evidence. Lüdenscheid is in the Märkischer Kreis district, within the Arnsberg administrative district in North Rhine-Westphalia. For the local enquiry route, identify the road section affected, cadastral plots and work requested. For a project crossing a municipal boundary, assign the separate areas to the respective local authorities. The shared construction organisation brings responses together with their actual spatial references.
The town of Lüdenscheid recommends an ordnance investigation for construction properties before the building application. The application should include a site plan from the Deutsche Grundkarte at a scale of 1:5000, with cadastral section and plot labels. The municipal legal, public safety and public order department is responsible for coordination. The map extract for the application and a detailed construction drawing serve different purposes. The extract identifies the property clearly; supplementary drawings describe the location and scope of groundworks. For a longer road section, cadastral plots and construction sections are linked traceably. Existing information and reports are included with file references, dates and the respective areas considered.
For historical preparation, maps, plans, files and newspapers from Lüdenscheid town archive can supplement documents on earlier street conditions. Their dates and the areas actually depicted are compared with existing aerial photograph analyses and property documents. Later alterations, utility works or fill remain identifiable as a separate period. The relevance of historical findings to today's construction task is assessed against the specific working area. The official town history dates street paving and the expansion of routes to Altena and Halver to the beginning of the 19th century. It describes Lüdenscheid as largely spared fighting during the Second World War; after the war, the town was in the British occupation zone. This historical context does not replace property-specific ordnance assessment.
A local planning example is Schlittenbacher Straße: the site plan published by the town, marked as a preliminary drawing dated 18 September 2025, shows retaining walls, relocation of manhole covers and planting areas alongside traffic surfaces. Decision paper 316/2025 describes constraints within the street, including existing trees and property boundaries. It divides the plans into sections from Loher Straße to Breslauer Straße and from Breslauer Straße to Schützenstraße. For the ordnance task, identify the actual individual activities within such a section. The sections of a road project and an area investigated by specialists must be compared spatially. A plan version retains its date even when further drawings are added for later work.
These documents describe the road plans at that time. They are not an ordnance investigation report and evidence neither contamination nor a completed assessment. For your own reconstruction project, they suggest a practical planning question: which individual activities alter the ground, and which existing results actually cover these interventions?
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.
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.
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.
Procedure at the site: Town of Lüdenscheid: Schlittenbacher Straße site plan, preliminary drawing dated 18 September 2025 · Town of Lüdenscheid: decision paper 316/2025 on Schlittenbacher Straße development plans.
Planning and documentation: BFR KMR: principles of clearance planning · BFR KMR: geophysics · BFR KMR: documentation · North Rhine-Westphalia Ministry of the Interior: explosive legacy
The BFR KMR are used as technical guidance; locally applicable requirements and responsibilities must be clarified separately.
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. Technical suitability alone does not establish that a private commission is permissible. The information held by the authorities and the authorisations required for the activity are checked before an agreement is made.
The client describes the project and provides the existing project documents. The operator adds the requirements for use, access and timing. A coordinating contact agrees the assigned tasks with those responsible. Before commissioning, a clear record is made of which information is missing, who will obtain it and which decision the results are intended to inform.
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.
The private explosive ordnance specialist carries out the agreed investigation and documentation scope. Official requirements and decisions are clarified with the competent authorities concerned. The documents needed for a particular procedure depend on the location and project. The technical report describes the specialist service performed; its conclusions are not presented unchecked as general authorisation for further groundworks or as an authority's decision.
A continuous road section may have locally different investigation conditions. Utilities, installations and restricted access are considered for each task. The decision links existing findings with the evidential scope required. A single road construction commission therefore does not automatically justify the same investigation method for every wall, shaft and peripheral area.
Assess historical documentsFirst clarify what findings are needed before the planned ground interventions. Any possible supervision then has a defined task and clear limits. The mere presence of specialist staff does not replace missing advance investigations. Before a private commission, prerequisites and authorisations under the specific North Rhine-Westphalia procedure are also checked.
Compare investigation methods
Road, drainage and other installation plans may depict the same area differently. Bring the information relevant to groundworks together in a traceable plan version. Individual structures and their depths remain identifiable. A road centreline alone describes neither the entire working area nor all point-specific interventions along the planned scheme.
Document findings and their limitations
A relocated shaft or changed wall connection may affect a different volume of ground. Compare such changes with the existing investigation scope. A structure's small size does not replace this comparison. Even where the road alignment remains unchanged, it must be clear whether existing findings still cover the location actually constructed.
Document investigation scope and changes
For specialist assessment, consider the groundworks planned, including necessary working areas. Temporary construction stages may affect different areas from the completed structure. Identify these areas where planned. Further investigation can then align with actual construction, rather than being limited to visible final dimensions.
Specialist services and investigation tasksThe investigation objective and suitable methods are determined from the planned construction task and existing findings. Which activity may be commissioned privately under the specific North Rhine-Westphalia procedure is clarified separately before an agreement. For the quotation, the information required, affected area and contributions of other parties are identified. Where a project involves several specialist questions, the ordnance commission is described with its own intended results. Specialist preparation establishes which details are already sufficient and what information is still needed before the work.
For the Lüdenscheid commission, break road reconstruction down into its actual groundworks. Alongside the carriageway, describe shafts, retaining wall foundations and planting areas with their location and required depth. Existing ordnance documents are assigned to these volumes. This establishes whether documents first need assessment, further areas need investigation or already assessed findings need further work. The permissible commissioned specialist service and results required are defined by this scope. A plan title such as road reconstruction does not replace a description of individual interventions.
Define the specialist taskBefore the work begins, clarify actual survey access, utility information and interfaces with individual road construction activities. Also identify lateral working areas where groundworks are planned. Necessary preparatory work depends on the method and site. Additional breaking out or other interventions to create investigation access are prepared with specialist input and the responsible parties, rather than undertaken independently. Existing trees, property boundaries and installations are considered according to actual conditions. Missing access remains linked to the structure affected.
Clarify preparatory work in the programmeThe commission describes the groundworks planned first and the finding needed for them. Assessment and handover of results form part of the process. Effort and dates depend on actual access, documents and coordination. A road section boundary is compared with the investigation volume needed by specialists. New drawings are checked for their content, rather than assumed to fit the previous scope merely because the project name is unchanged. Site management receives a clear account of which finding is needed before carriageway work and which before separate shaft or foundation construction.
Discuss the scope and scheduleShow whether only the surface will be renewed or work will extend deeper into the road build-up. Identify the respective boundaries. The general term road rehabilitation is too vague for specialist comparison where sections are treated differently. An existing investigation must be comparable with the actual work. For an excavation, for example, show the foundation area, planned shafts and lateral utility connections separately. An alignment shifted later has a clear revision status. The specialists involved can then identify which new area needs assessment and which earlier details still describe the same ground intervention.
A manhole cover shown on a site plan does not describe all work planned beneath it. State whether only an elevation adjustment or more extensive intervention is planned. For new shafts and connections, location and planned depth are needed. A result for the carriageway build-up cannot automatically answer this additional question. Use a traceable reference for existing and planned elevations. A geotechnical report may provide strata information but must be assigned to the correct location. If elevations differ or the ground has been investigated only partly, identify the outstanding question and clarify it before using the documents together.
If a wall is to be removed or a retaining wall built, include foundation work in the documents. Also state necessary working areas and their relationship to adjacent areas. Visible wall height alone does not describe the ground intervention. Outstanding structural details should be clarified or explicitly identified before defining the investigation scope. The overview gives each document's date, commission and associated plans. An earlier assessment of another structure is not assigned solely through the shared address. Specialist planners compare the volume actually addressed with the new work and record what finding can be used for the next decision.
New tree locations, road gullies or lighting foundations may require their own ground interventions. Mark these points even if they appear in another specialist drawing. If positions are defined only later, comparison with existing investigation results remains outstanding. A rough mark on a road plan does not establish an investigated depth. The published site plan leaves precise street-lighting locations to be determined for construction. For a comparable project, a foundation position still open therefore remains identifiable as outstanding planning information. Once settled, its ground intervention is compared with the existing investigation. The contractor receives the appropriate version before this work step.
Documentation links findings and maps to the associated section and ground interventions considered. An overview shows structures already covered and questions remaining. Complete annexes remain part of handover. After clearance work, the clearance record with its scope and results is assigned to the section treated with its site plan. Site management thus receives a traceable status for the planned work rather than a blanket statement for the entire street. The handover identifies the plans used and spatially relevant findings for each construction section. Site management receives the limitations affecting its immediately forthcoming work. Outstanding conditions are recorded with the responsible participant and next step needed. This status is passed on in full if the contractor changes.
If a structure's location or depth changes, compare the affected area specifically again. Original results retain their previous scope. Additional findings are assigned to the same overview. Even shortly before construction, it must be clear which plan version actually underlies specialist assessment. A deeper foundation may raise different questions from a relocation on the site plan alone. State the changed geometry and documents affected in each case. Responsible participants assess the change within their specialist remit and bring results together with the current design. An earlier quotation is related to its scope actually agreed.
Provide the road plan and supplementary drawings with a common revision status. Mark shafts, walls, utilities, planting areas and other planned groundworks. Identify depths still outstanding. The enquiry can then cover actual ground interventions even where details are in different specialist plans or detail drawings. For the service description, clearly distinguish preparation, possible investigation, interpretation and handover. Identify who provides access, utility information and existing reports. Responses still missing are also identified by their actual processing status. The enquiry can then address the outstanding specialist task and intended construction section.
Assign the next section to existing reports and official responses. Mark changed structures specifically. Unresolved areas remain identifiable as separate tasks before construction. Completed work on the first section is not transferred to the rest of the road without spatial and specialist comparison. Before resuming, compare the plan and report versions together. New site management receives the information relevant to its task on investigated, uninvestigated and partially assessed areas. The handover note identifies outstanding questions and the body with which further work is coordinated.
Historical aerial photograph analysis and other older documents help locate the basis for suspected ordnance. Images, interpretability and area boundaries are linked to the planned road reconstruction. The absence of a visible indication is not a technical investigation of today's ground. Other existing findings are considered. Older road or utility conditions retain their respective dates. For structures located to the side, check whether the existing analysis also covers their actual intervention areas, rather than using only the eventual carriageway as the project area.
Understand aerial photograph assessmentMagnetic methods detect magnetic anomalies. Suitability is assessed according to expected objects, ground conditions, interference and the volume requiring investigation. Utilities, fences and existing structures can affect interpretation. Signal strength alone does not identify explosive ordnance. Measurement, assessment and further clarification are linked to the specific specialist task. Before a carriageway result is used for a lateral retaining wall foundation, its location and coverage are checked. The proximity of the two activities does not replace this comparison.
Understand the scope of magnetometryElectromagnetic investigations may suit certain metallic targets and site conditions. Selection considers the finding required, accessible survey areas and interfering installations, rather than instrument availability alone. Results are documented with their locations and actual investigation conditions. Any necessary addition follows from specialist assessment. Areas addressed are assigned to the structures of the road reconstruction. A narrow accessible survey area is not used as evidence for further ground interventions solely because they share a street name.
Understand electromagnetic surveyingUnder suitable conditions, ground-penetrating radar can provide information about subsurface structures and reflections. Ground conditions, moisture and installations affect interpretability. A reflection is not automatically ordnance; an area without notable signals does not confirm any arbitrary depth. Specialist interpretation and limits are documented with the commission. An existing survey is read according to its purpose and coverage. For a new shaft or planting area, check whether the finding needed actually exists and fits today's elevation reference.
GPR and limitationsFor deeper ground interventions, it may be necessary to assess whether a surface investigation can establish what is needed or whether another approach is required. Positions, depths, reference elevations, borehole layout and known utilities are prepared for this purpose. Suitable investigation access is also planned by specialists. A standard grid or general depth figure does not replace this task. The elevations of individual structures are related to the existing ground surface. The carriageway build-up alone does not describe the full depth of an adjacent foundation or shaft.
Prepare deep interventionsIf a necessary advance investigation cannot be completed in full, specialists assess whether a planned approach accompanying construction is suitable. Investigation, interpretation and communication of findings are linked to the groundworks actually planned. Visual observation of excavated material alone does not replace a necessary survey. Site management receives the allocation of specialist work and unresolved areas within the programme. If work moves from the carriageway section to a separate structure, check the scope agreed for it beforehand. The supervision has a traceable spatial reference for its results.
Agree the approach during constructionThe historical aerial photograph analysis and other available documents are analysed for the areas actually affected. These may also include lateral working areas. An investigation only along a road centreline does not automatically answer questions about every adjacent structure. The scope evidenced by each document remains decisive.
Existing utilities, metallic installations and buildings may affect the survey. Specialist preparation must therefore clarify what finding is achievable under actual site conditions. An area carrying traffic or densely occupied is neither automatically surveyable nor excluded in principle. The method and necessary preparation must be agreed for the project.
A clearance plan describes, where needed, how necessary measures fit the planned construction work. The sequence must account for necessary investigations before each ground intervention. Merely observing excavation does not replace this preparation. Whether professional clearance accompanying construction is suitable requires its own specialist justification.
Compare road, drainage and foundation plans on a shared basis. Identify versions and differences rather than passing on different outdated drawings for the same location. Ordnance assessment must identify where the deepest interventions and additional working areas are planned. At first contact, identify the project address, proposed work and current plan version. Specialist planners check existing ordnance reports for area and depth references, limitations and identifiable gaps. They assign official notes and investigations already performed according to their respective functions. The document register shows which results can be used for the new construction task and which question still needs an answer.
Existing aerial imagery analyses and historical indications are related to the present-day project area. Where the basis is incomplete, the necessary supplementary research or aerial imagery analysis is carried out through the appropriate specialist or official route with its question defined. The findings obtained are assessed together with previous use and current plans to determine investigation needs. An entry in the town's history is first checked for its actual relevance to the property.
State whether a depth is measured from existing ground level or the planned new surface. If road elevation changes, these figures may concern different ground layers. Comparison with older results needs the same traceable reference. A depth figure without a starting elevation cannot be assigned reliably. Investigation planning defines suitable methods according to the finding needed, intervention depth and actual local conditions. Existing utilities, installations and interference are considered. The commission describes spatial scope and execution prerequisites. The drawn area remains linked to the specific construction task when the foundation or utility route changes.
If a gully or foundation must move because of existing conditions, check coverage of the new position before the ground intervention. Even short lateral shifts may extend beyond the documented work area. The need for an addition is decided from existing findings, rather than the size of the plan change alone. On the clarified basis, specialist staff undertake the investigation permissible within the relevant legal and technical scope, or the agreed supervision. Data are recorded with locations, local survey conditions and limitations. If conditions change, further action is agreed. A suspicious find triggers the applicable reporting and hazard response routes.
The data and findings collected are professionally assessed in the context of the investigation objective, method and site conditions. Interference and areas that cannot be investigated remain identifiable. The report documents the work carried out, results, location and depth references, and limitations; maps and attachments remain connected to it. Any further clarification required is assigned to the affected area. A measurement anomaly is professionally assessed and is not identified as a particular object solely on the basis of the measurement signal.
Site management needs a clear link between the report and section ready for work. Identify unresolved or uncovered areas and changes from the assessed drawing. This keeps clear across changing phases which prerequisites for the next work have been clarified and which remain outstanding. For the next phase, hand over the assessed report and associated plans together. Site management compares its forthcoming work with the investigated area and documented limitations. Outstanding tasks receive a responsible contact and reference to the next ground intervention. The plan and report versions used remain traceable for later additions.
A result document should show the areas addressed so carriageway, ancillary installations and point-specific ground interventions can be located again. Record methods, depths investigated and limitations with the associated plan version. If individual installations are added later, their investigation needs can be checked specifically using these documents, without assuming a blanket finding for the entire road.
FONTANA-EOD undertakes the agreed specialist commission for investigation and documentation. The tasks of local public order authorities and state explosive ordnance disposal services in North Rhine-Westphalia remain unaffected. The BFR Kampfmittelräumung apply directly to federal properties; their planning and documentation principles provide specialist guidance for other projects.
FONTANA-EOD undertakes the agreed specialist task for the identified Lüdenscheid road reconstruction and its individual groundworks. Accessible areas and results needed are agreed before the work begins. Changes to plans or local conditions are reviewed before the affected work proceeds. The report documents the work actually undertaken and its limits. Site management can identify the finding available for the carriageway, shaft, retaining wall or further working area. The technical task description remains linked to the respective plan version.
Discuss the investigation taskMethod selection starts with the information missing for the next structure. Specialist planning considers existing results, ground conditions and actual circumstances. An available instrument or investigation of a neighbouring carriageway is not sufficient as the sole basis. Selection is justified for the volume of ground required. Narrow lateral spaces and point-specific deeper work are considered within their actual scope. A general road cross-section does not replace this assignment.
Inaccessible areas and areas with restricted interpretability are identified with their actual boundaries. Site management can assign the roadworks affected and necessary additions to them. A general total area figure does not replace this distinction. Planning and construction teams agree when a suitable investigation can be undertaken. A peripheral area not yet addressed remains identifiable with its planned structures. The result of an adjacent survey is not implicitly extended to this volume.
New locations, additional depths or different construction methods are compared with existing results before the affected work begins. A changed retaining wall, additional shaft or changed planting pit is described according to its actual ground intervention. Specialist planners receive a clear account of the difference from the previous version. Their response and necessary additions are assigned to the volume of ground affected. The same road-section label does not, by itself, confirm an unchanged investigation scope.
At handover, reports and associated plans are provided with the road areas and individual structures actually addressed. An overview can list usable findings and outstanding tasks by construction section. It does not replace the documented investigation scope. When designers, site management or contractors change, location, elevation reference and plan version remain traceable. The next construction phase receives the information needed for its own groundworks, including limits at lateral areas or those previously omitted.
The surface shows only part of the construction task. Work planned beneath and alongside the visible structure also matters for ordnance assessment. Location, depth and working area are therefore considered together. A finding for an adjacent carriageway area cannot be transferred to the shaft merely because it appears on the same plan.
Understand investigation reports and their limitationsThe drawing describes planned construction. The report documents a question actually addressed, with its scope and limits. Both are brought together for further planning. A plan note about construction work replaces neither a result nor comparison with your project's specific groundworks.
Understand the service scope
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 assessment
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


Historical assessment, technical investigation and further work answer different questions. The service overview helps distinguish these tasks in an enquiry.
Compare services
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 documentationNo. The published preliminary drawing from September 2025 is a road design. It shows planned structures but replaces no ordnance report and confirms no current construction status. The associated actual investigation results must be consulted separately for a project. Clarify the required sequence with the responsible parties before the affected groundworks.
If ground intervention is planned for shafts, foundations or planting areas, show the work with its location and depth. A structure's small visible size says nothing about coverage by existing results. Specific investigation needs are agreed with specialist input.
If road elevation changes, a depth beneath existing ground level may refer to a different volume from the same figure beneath the planned surface. A report can be assigned appropriately only if its elevation reference is traceable. Record ground level changes and plan versions.
It is not a blanket substitute. Whether professional explosive ordnance clearance during construction is suitable must be assessed according to the task and conditions. Visual observation of excavated material alone does not replace a necessary investigation before each ground intervention.
Stop the affected work, leave the object untouched and move away. Keep other people away. Notify the police immediately on 110 from a safe distance and follow the authorities' instructions; do not attempt recovery or further investigation yourself.
Because planned groundworks may extend beyond the dimensions of the completed structure. The actual ground intervention is compared with the documented investigation scope.
Yes, its new location and depth are compared with existing findings. The need for additional steps follows from this comparison.
A current overview plan and complete results for the individual sections. Changes, unresolved areas and the next ground intervention should be clearly assigned. Effort also depends on the size and accessibility of the area, planned intervention depth, suitable methods, interference and usable previous findings. Necessary preparatory services, interpretation and documentation are agreed with their scope for the specific task. Costs for statutory hazard response are distinguished from privately commissioned services.
Include detail plans and depth information for the structures affected. For the planned road reconstruction in Lüdenscheid, a current site plan and details of individual ground interventions are useful. Include drawings of shafts, foundations and ancillary installations, together with existing ordnance reports. Identify unclear depths or positions still subject to change so the necessary specialist commission can be prepared appropriately.
Identify relocated ground interventions and added working areas with their current status. Also state which earthworks are due to start first and which areas are not yet accessible. This allows necessary preparation and handover of results to be coordinated in good time.
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.