Project pathway
The quickest route to the right decision.
Explosive ordnance assessment in the Arnsberg administrative district
An aerial photograph analysis is available, a survey has been requested or a suspected hazard requires further clarification: these stages mean different things for the construction programme. FONTANA-EOD helps clients, design consultancies and site management in the Arnsberg administrative district interpret existing results and describe the next specialist commission precisely.
Distinguish results from outstanding questions.
Provide a technical basis for the next step.
Clarify prerequisites before groundworks.
Assess the construction project
Clearly distinguish available results from outstanding steps
For your project in the Arnsberg administrative district, the actual investigation status is established first. We relate existing results to the proposed groundworks and identify outstanding questions. The next specialist commission is derived from this, with a defined area, a clear task and appropriate prerequisites.
Documented location references
Reference projects in the Arnsberg administrative district
Select a project location on the map or in the location list. The associated entries lead to the protected reference overview.
The points indicate place references of documented projects, not precise ordnance find or construction site coordinates. Several entries may belong to one project. References without a reliable place assignment are available in the complete reference overview.
Map bases: © BKG (2026), VG250 / GN250, Data licence Germany – attribution 2.0. Area outline projected for display. Selection and project assignment: FONTANA-EOD.
Project references
Selected project examples
Wetter (Ruhr) – Downhole magnetometry
Explosive ordnance survey – Wetter (Ruhr) – Noise barrier, railway/tramway project in Wetter (Ruhr)
Service period: 2026-07
Service areas:Downhole magnetometry / deep-ground survey
Project site
Connect the site with the specific construction task
Understand the Arnsberg service and its different tasks
The Arnsberg district government describes wartime aerial photograph analysis, detection, clearance and final disposal as separate tasks of the Westfalen-Lippe explosive ordnance disposal service. Local regulatory authorities remain responsible for hazard prevention. The existing status of your project is therefore described precisely. A recommendation from the state service is read together with its spatial scope and coordinated with the next proposed intervention. The Arnsberg administrative district is an administrative area in North Rhine-Westphalia. The state service also covers the Münster and Detmold administrative districts. For a specific construction section, the local contact is established through the city or municipality concerned. The administrative area, state specialist responsibilities and technical investigation area are therefore identified separately. Further planning depends on the findings already available for the actual project location and the permissible specialist work still required.
Information on explosive ordnance surveying in Dortmund, Bochum, Hagen, Hamm, Herne, Siegen, Lünen, Arnsberg, Lippstadt, Unna, Iserlohn and Lüdenscheid helps you prepare your project enquiry. The documents and proposed ground interventions on the particular property are decisive.
Local context
What has already been completed in the procedure
Distinguish the tasks of the state service
The Arnsberg administrative district comprises several districts and independent cities. For explosive ordnance disposal, the Arnsberg district government supports local regulatory authorities through the Westfalen-Lippe explosive ordnance disposal service. Its tasks range from wartime aerial photograph analysis and detection to clearance and final disposal. These stages must be distinguished on technical grounds.
The City of Arnsberg commemorates the air raid on Niedereimer in March 1945. Such local historical information is assigned to the location concerned. For a present-day construction task, existing indications, subsequent ground changes and proposed interventions are considered together. The history of one place does not establish a uniform state of knowledge for the entire administrative district. The investigation required follows the specific outstanding question and the actual conditions of the work area concerned.
Establish the status actually documented
For your project, it is therefore important to establish which results already exist and what they indicate for the proposed groundworks. An investigation requested is not an investigation completed. Equally, a recommendation for a further measure does not establish that it has already been carried out. Compile the documented status before relying on it for a construction commission or approval of a scheduled start.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For the commissioned activities, the relevant technical requirements and questions of permits, competence certification and responsibility are clarified. The actual planned service scope is decisive. A general company designation does not replace checking that the tasks and interfaces are described appropriately for the specific project.
Link occupational safety to the construction sequence
The risk assessment, working areas and communication must fit the planned activities. Explosive ordnance specialist works are coordinated with the other construction works. Operational organisation, traffic safety and other technical checks retain their own responsible parties. Joint coordination brings the information together and assigns tasks and decisions to the respective competent participants.
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.
Procedure at the site: Arnsberg district government: The administrative district · Arnsberg district government: Westfalen-Lippe explosive ordnance disposal service · Arnsberg district government: Wartime aerial photograph analysis for explosive ordnance detection.
Planning and documentation: BFR KMR: principles of clearance planning · BFR KMR: geophysics · BFR KMR: documentation
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.
Private works are subject to the exceptions under the KampfmittelVO and the requirements of the official guidance. The exceptions concern, in particular, downhole detection as part of specialist foundation engineering and explosive ordnance clearance during construction under the conditions laid down by law. Private explosive ordnance clearance during construction requires that prior investigation using recognised explosive ordnance detection methods is not possible. A relevant factor is also the state explosive ordnance disposal service's assessment that there are no specific indications of ordnance contamination on the site concerned. All further spatial, technical and organisational requirements are clarified for the specific activity. The competent authorities decide on the official appointment.
Working together
Allocate tasks within the construction project
Client and operator
The client describes the project and provides the available project documents. The operator adds requirements relating to use, access and scheduling. The participants agree their respective tasks and decision-making responsibilities. A coordinating contact person brings the project information together. Before an appointment, it is recorded clearly which information is missing, who will obtain it and which decision the result is intended to support.
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 company carries out the agreed permissible investigation and documentation scope. Authority requirements and decisions are clarified with the respective competent bodies. The documents needed for a specific procedure depend on the site and project. The technical report documents the specialist service performed, including areas, depths and limits of its conclusions. Its applicability to further groundworks is checked against the specific intervention.
Local regulatory authorities are responsible for hazard prevention. The state Westfalen-Lippe explosive ordnance disposal service at the Arnsberg district government supports them with official specialist tasks. Its remit covers the Arnsberg, Münster and Detmold administrative districts. Official aerial photograph analyses are requested through the relevant local regulatory authority. A private specialist service is agreed within the scope permitted under North Rhine-Westphalia requirements; official responsibilities remain unchanged.
Investigation task
Which specialist task comes next?
Define the investigation question before choosing the method
The appropriate method follows the findings required and the conditions of the area concerned. Existing knowledge is taken into account. Availability of a particular type of equipment does not, by itself, establish a suitable commission. First, a technical assessment defines the outstanding question, its spatial scope and the limitations expected when addressing it.
Assess historical documentsCoordinate further work with the competent authorities
If the technical assessment identifies additional tasks, they are assigned to the appropriate procedure. State and municipal responsibilities remain identifiable alongside private services. Permissions required and the prerequisites of the NRW procedure are checked for a private agreement. Technical feasibility or a reserved date does not replace that check.
Compare investigation methodsProject types
Establish the specialist status required from existing correspondence
Identify the function of each document
An enquiry, a recommendation and an investigation report serve different purposes. Classify the documents accordingly and link them to the relevant plan revision. The date of a message alone also says little about the specialist work completed. Further planning requires a clear indication of the specific area already assessed and the question still outstanding.
A technical report is supplied together with its maps and appendices. Identify the purpose considered, the areas concerned and the associated elevation reference. This allows the current construction task to be compared with the ground volume actually addressed. Missing appendices are requested from the issuer. Unclear statements remain identifiable as questions rather than being passed on unchecked as completed findings.
Document findings and their limitations
Identify the findings required for the next intervention
Describe the immediately proposed groundworks by location, depth and construction method. Compare this task with the documented status. This establishes which findings are still needed. A general expression such as investigation commissioned does not show whether the commission fully covers the work actually approaching, with appropriate prerequisites.
Show not only the structural element but also the working space, connecting pits and ancillary interventions needed to construct it. Additional depth or a changed location is marked on the relevant plan. Compare this geometry with existing result documents. Specialist planning assesses whether outstanding findings require additional work. The permissible commission and necessary prerequisites are coordinated with the responsible parties before the groundworks concerned.
Specialist services and investigation tasksKeep different stages of work visible
Different parts of a project may be at different investigation stages. Record these differences in the project overview. Completed findings for one section are not automatically extended to the entire construction site. Site management instead needs a clear allocation of available findings and outstanding tasks to the respective proposed interventions.
Assign existing reports and findings still required to each subarea. Information on the depth investigated is linked to the ground surface relevant at the time. An excavated or filled area may have a different starting situation from that shown on an older plan. The technical assessment takes this change into account when comparing it with the new intervention. Areas addressed and areas still outstanding remain distinguishable on the results plan.
Coordinate the sequence and tasksPreparation
Prepare the scope and commission together
Historical preliminary assessment, technical investigation and specialist work during construction answer different project questions. The permissible private activity under the specific North Rhine-Westphalia procedure is clarified with the information objective and necessary authority involvement before an agreement.
Establish what needs to be known before commissioning the work
The actual documented specialist status is compiled first for the commission. Aerial photograph analysis, a requested survey, an investigation carried out and outstanding clarification of findings are assigned their respective documents. The proposed groundworks are described by location, depth and construction method. The next specialist task required can be derived from this. The permissible commissioned service and required findings are assigned this scope. A recommended or scheduled step is not recorded as already completed. Further work follows the specific knowledge available rather than a fixed overall sequence assumed for every property.
Define the specialist taskCoordinate preparatory work with the investigation
Before work is carried out, actual survey access, utility information and interfaces with other trades are clarified. Preparatory work required depends on the method, location and knowledge documented so far. Additional opening-up work or other interventions to create investigation access are prepared by specialists and are not undertaken independently. Outstanding prerequisites are linked to the area concerned and the next commission. The agreed deployment is checked against the results actually available before groundworks.
Clarify preparatory work in the programmeAgree a clear scope and schedule
The scope of private specialist work is agreed using the project documents, actual execution conditions and permissible activity. Necessary preparatory works, investigation, evaluation and documentation are described transparently. Costs and dates are related to these prerequisites and the required coordination. Changes to the construction plans are checked against the agreed contract before work is extended.
Discuss the scope and scheduleTasks at the site
Describe the next specialist commission correctly
01
Identify an outstanding question
Write down what still needs clarification, such as assessment of existing indications or coverage of a newly planned work area. Supply the existing documents. The general term explosive ordnance assessment can refer to different tasks. A clear commission therefore requires a specific question and the area and depth to which the findings are to relate.
02
Identify requests and results
Record separately in the project overview which documents have been requested and which have already arrived. Link reports received to the relevant plan revision. A forwarded form or appointment confirmation does not yet demonstrate specialist work on site. This distinction helps when site management, designers and the client receive different parts of the correspondence.
03
Communicate the construction task in full
Alongside location and depth, describe the proposed structural elements and working methods insofar as they are already established. A changed shaft or deeper foundation may raise different questions from the intervention previously considered. Specialist measures should be adapted to this task. An unchanged property address alone is too imprecise.
04
Distinguish service scope from responsibilities
A private quotation describes the permissible service scope proposed for commissioning. Permissions and prerequisites required for it are checked. Official decisions are made by the respective competent authorities. Record which coordination has already taken place and which conditions remain. The hazard-prevention duties of the local regulatory authority and the tasks of the state service remain unchanged when a private specialist is commissioned.
Project documents
Documents that establish the next step
Record the basis for each subsequent decision
Document the report, plan and work status to which a technical decision relates. All associated appendices remain available. This makes it possible to trace later why a particular next step was proposed. If the location or scope of groundworks changes, the part concerned can be checked again specifically.
Identify the version used for a decision, with its date and spatial reference. Documents added later indicate which earlier assumption they clarify. The original result documents remain traceable. A new specialist commission describes the findings still outstanding and the areas or points intended for that work. Clients and specialist planners can then check whether the work offered suits the construction task now approaching and the knowledge already available.
Carry outstanding tasks forward at handover
A handover includes unanswered questions and documented limitations alongside existing results. Their spatial reference is retained. A change of design consultancy, client or site management must not remove these items from the overview. The next party thus receives the actual state of knowledge rather than isolated completion notices without context.
At handover, indicate which questions have already been answered and which responsible parties still need to provide responses. The new site management receives the complete report with plan appendices and limitations. A proposed supplementary investigation is identified separately from a measure already carried out. After clearance work, the clearance record, including its scope, results and remaining limitations, is assigned to the area actually addressed and its site plan. Changes to construction are identified on the shared plan revision. Investigations and protective measures required are clarified before further ground interventions. Subsequent work can thus be related to the knowledge actually available.
Construction sequence
Coordinate investigation and construction sections
Compile the available status before commissioning
Compile assessments, reports, maps and relevant responses together with the current plans. Identify documents requested but not yet available. This allows the specialist task to be defined precisely. The next commission can build on existing results without treating an enquiry or recommendation as an investigation already carried out.
Check the documents supplied for completeness and relevance to the current project. An earlier investigation commission may have addressed different depths or a different construction stage. Specialist planners therefore compare the documented scope with the groundworks now proposed. Information still required is identified specifically and requested from the appropriate parties. The quotation describes the outstanding specialist task, its limits and prerequisites. Existing usable results are taken into account with their respective scope of validity.
Check the original question after the work
Check what findings the new result actually provides and the area to which it relates. Planning incorporates this information together with its limitations. Remaining needs are described specifically. An investigation appointment attended can only be assessed technically once its documented result can be assigned to the proposed construction task.
Assign new results to the agreed investigation questions. A report explains the specialist service carried out and the areas reached; maps and appendices show their spatial reference. Uninvestigated subareas, interference and limited interpretability remain identifiable. For the subsequent intervention, it is assessed whether further work or an adjustment to the planned works is needed. The respective responsible parties coordinate this follow-on task. Outstanding conditions are handed to the construction site management together with the appropriate document revision.
Method selection
Select methods according to the task and survey conditions
Historical records and aerial photographs
Historical aerial photograph analysis and other earlier records help establish the spatial basis of a suspected hazard. Images, interpretive capability and area boundaries are related to the current groundworks. An absence of visible findings is not a technical investigation of the present-day ground. Other existing knowledge is incorporated. Any resulting recommended investigation step is recorded with its actual work status. Only the corresponding service and result documents show whether and within what ground volume it was carried out. The historical basis remains distinguishable from technical knowledge obtained later.
Understand aerial photograph assessmentMagnetometric survey
Magnetometric methods detect magnetic anomalies. Suitability is assessed in relation to expected objects, ground conditions and the ground volume requiring investigation. Utilities, fences and existing structures can affect interpretation. A survey result is assigned its actual location and work scope; a detected anomaly does not yet constitute conclusive identification of an object. Signal strength alone does not identify explosive ordnance. Surveying, assessment and further clarification are planned as specialist tasks. Magnetometry measures the magnetic field passively. The magnetic effect of the object sought is decisive; electrical conductivity alone does not establish its detectability by this method.
Understand the scope of magnetometryElectromagnetic methods
Electromagnetic investigations may be suitable for certain metallic target objects and site conditions. Selection considers the findings required, accessible survey areas and interfering installations, rather than equipment availability alone. Results are documented with their location and actual investigation conditions. Any additional work required follows from the assessment and the outstanding question for the particular work area. Time-domain electromagnetic methods, TDEM for short, assess the electromagnetic response of conductive objects over time. The method is selected according to the investigation objective and actual survey conditions.
Understand electromagnetic surveyingGround-penetrating radar
Under 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 explosive ordnance; an area without anomalies does not confirm any arbitrary depth. Specialist interpretation and limitations are documented with the commission. The knowledge obtained is distinguished from any further clarification still needed. A survey report alone is not used as evidence of other specialist work not documented in it.
GPR and limitationsDeep-ground and downhole surveys
For deeper interventions, it may be necessary to assess whether investigation from the surface can provide the findings required or whether another approach is needed. Positions, depths, reference elevations, borehole layouts and known utilities are prepared for this purpose. Creation of suitable investigation access is also planned by specialists. A standard grid or general depth figure does not replace this task. An earlier recommendation is compared with the investigations actually carried out and the ground volume covered by their results. The next commission addresses the outstanding question rather than repeating a documented step without checking.
Prepare deep interventionsSurvey during construction
If a necessary advance investigation cannot be completed in full, it is assessed whether a specialist-planned approach accompanying construction is suitable. Investigation, interpretation and communication of findings are linked to the groundworks actually proposed. Visual observation of excavated material alone does not replace a necessary survey. Site management receives the allocation of specialist work and outstanding areas to the work sequence. Planned supervision is documented with its actual implementation. Its name alone establishes neither complete treatment of the property nor completion of other measures.
Agree the approach during constructionTechnical assessment
From indications to a justified measure
Take preliminary investigation results into account
In the state wartime aerial photograph analysis the result is communicated to the local regulatory authority together with a recommendation for action. This recommendation and the area considered form part of the initial documents. Establish which parts are relevant to the current construction project. A resulting investigation task must not be defined solely from an abbreviated sentence in an email.
Where historical questions remain, the research needed is undertaken. Any required official wartime aerial photograph analysis is arranged through the local regulatory authority and undertaken by the state service. In Westfalen-Lippe, the available images from different wartime periods are assessed together. Their findings are compared with present-day intervention areas and subsequent ground changes. The resulting recommendation describes a possible further task. Whether and how it has already been addressed is established from actual result documents.
Plan detection to suit the question
A survey should investigate the respective outstanding question under the actual conditions. The suitable method and its limitations must be determined by specialists. Not every anomalous survey reading already indicates explosive ordnance. Conversely, a survey with limited interpretability does not mean that the area concerned has been sufficiently clarified. Method selection considers the investigation objective, intervention depth, ground structure, existing utilities, interfering objects and actual survey feasibility. Additional work required is related to the specific findings still outstanding and the permissible service scope.
Coordinate proposed further work
If indications of possible explosive ordnance become more substantial, further work may be required. The approach must be coordinated with the competent authorities and the proposed specialist commission. Where a clearance plan is required, it records measures, prerequisites and sequence. Construction personnel should not replace such clarification by independently uncovering or moving suspicious objects. The results documentation records the work status actually achieved.
For a permissible specialist task accompanying construction, the work areas concerned are compared with existing knowledge and the proposed construction work. Surveys, areas addressed and observations are allocated traceably. The technical report documents the service carried out, its assessment and the limits of its findings. Visual observation alone is not an equivalent substitute for proper specialist explosive ordnance clearance accompanying construction. Where further investigations, area clearance or recovery tasks are required, their scope and permissible commissioning are clarified with the competent authorities.
Next steps
Incorporate the specialist status into the construction programme
Identify the documents needed before starting
Establish which specialist records are needed for the approaching groundworks. The areas concerned and proposed depths should be identifiable. A blanket note such as assessment in progress is of little help when a specific excavation date is approaching. Identify the outstanding answer and the parties responsible. Initial contact provides the project location, construction task and clarification sought. Existing documents are checked for plan revision, spatial reference and gaps. Where historical knowledge is lacking, the research needed is carried out; any required official aerial photograph analysis is arranged through the local regulatory authority and undertaken by the state service.
Review the commission when changes occur
If a structural element is relocated or excavation extended, compare the change with the existing specialist commission. It must be established whether the new area and depth are already covered. Present the revised plans before work begins in the additional area. An ongoing investigation should not remain aligned with an outdated plan unnoticed. The appropriate investigation method is selected using the objective, intervention depth, ground structure, utilities, interfering objects and actual survey conditions. Outstanding prerequisites and permissible commissioning are coordinated with the respective responsible parties.
Perform the agreed investigation
The survey or investigation during construction appointed under North Rhine-Westphalia's requirements is carried out in the agreed areas and points. Measurement data and observations receive traceable location and elevation references. Uninvestigated areas, restricted access and relevant interference are recorded.
Assess survey data and findings
The collected data and findings are evaluated against the investigation objective. The technical assessment considers interference, the areas reached and remaining limits of the conclusions. It establishes which further investigation or work is needed for the planned groundworks.
Bring the report and plan appendices together
The report and plan attachments document the specialist works performed and their assessment. Worked areas, investigation depths, the relevant ground surface and limitations remain assigned. Reused older results and newly investigated areas are recorded distinctly. The agreed recipients receive the related documents together.
Hand over limitations explicitly
Document subareas that were not addressed or permit only limited conclusions. Site management needs this information as well as the results for investigated areas. A single green marking for the whole property can conceal these differences. Therefore refer to the complete report and its plans.
Derive further tasks from the result
After an investigation, it is assessed whether the specific question has been answered and which conditions still need attention. Any additional step should follow from this technical status. It is not scheduled solely because it already appears provisionally in the programme. Equally, necessary clarification must not be omitted because a construction date has already been agreed. The respective responsible parties use the related reports and plan appendices to decide on additions or adjustments needed for the next specific ground intervention.
Documentation
Records must show the status achieved
Findings and their scope
Keep enquiries, assessments and investigation reports with clear allocations. Further planning depends not only on the existence of a document but also on the work it describes and the area to which it applies. Transition to construction should be based on the specialist status actually achieved.
Project responsibilities
FONTANA-EOD carries out the agreed permissible specialist commission and documents its results. The report's findings remain bound to the task, area and depth addressed and the limitations recorded; their applicability is checked against subsequent specific groundworks. Official decisions are made by the competent authorities. The BFR Kampfmittelräumung provide a technical framework for federal properties. For other projects, their principles serve as guidance alongside the respective applicable local and statutory requirements.
Working approach
How FONTANA-EOD works
Document the agreed specialist service clearly
FONTANA-EOD addresses the permissible agreed specialist task for the defined work area in the Arnsberg administrative district. Before work begins, existing results are compared with findings still required. Accessible areas and prerequisites are coordinated. Changes to plans or site conditions are checked before the work concerned. The report documents the work actually carried out and its limitations. Site management can identify which step is demonstrably complete and which further task still needs clarification with the responsible parties.
Discuss the investigation taskThe task before the equipment
Method selection starts with the knowledge still lacking for the current intervention. Specialist planning considers existing results, the ground and actual conditions. Available equipment or a general recommendation for further investigation does not suffice as the sole basis. The selection is justified for the ground volume concerned. A completed partial commission is taken into account according to the findings it actually provides. The next specialist task receives a defined objective rather than merely carrying forward the name of an earlier measure.
Keep limitations visible
Inaccessible areas and areas with limited interpretability are identified with their actual boundaries. Site management can allocate outstanding specialist work and necessary additions to them. A general overall area figure does not replace this distinction. Planning and construction teams coordinate when a suitable investigation will be possible. Completion of a partial commission is recorded with these limitations. An area not yet addressed remains identifiable as an outstanding task even if other project steps are already documented as complete.
Clarify changes before intervening in the ground
A new location, additional depth or different construction method is compared with existing results before the work concerned. Specialist planners receive the identifiable change from the previous status. Their response and necessary additions are assigned to the ground volume concerned. An earlier report is used according to the findings that actually apply; a further step recommended at the time is checked for its present status. An unchanged project name does not, by itself, confirm an unchanged need for information.
Hand over the report and plan together
At handover, reports and associated plan appendices are supplied with the specialist task, area and work status identified. An overview may list existing results, recommended steps and outstanding questions separately. It does not replace the documented investigation scope. When designers, site management or companies change, the work actually carried out remains traceable. Other responsible parties receive the information relevant to their task. A requested or recommended step is not passed to the next construction phase as a completed result.
Understand the results
Use technical statements for the next decision
An appointment initially describes an organisational status
An appointment confirmation states when an activity is scheduled. It does not yet contain the technical result. Construction planning records these two pieces of information separately. The area actually addressed and possible limitations are established by the documentation. Only those findings can be compared with the scope of the approaching groundworks.
Understand investigation reports and their limitationsA survey anomaly requires specialist assessment
An anomalous signal is initially a survey result, not unambiguous identification of an object. Assessment considers the method, site conditions and specific question. Further coordinated steps may follow. The project overview should identify this status without presenting an outstanding assessment as clarification already completed.
Understand the service scopeDesign and findings
Documents for the next construction decision
Historical evidence and the current design
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessmentSpecialist reports for site management
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports
Further technical topics
Further technical information for your project
Determine the specialist service from the planned groundworks
Historical assessment, technical investigation and further work answer different questions. The enquiry describes the outstanding task, affected areas and depths, and the results required. The permissible scope of services is agreed in line with the actual conditions and responsibilities.
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 the procedure in the Arnsberg administrative district
Is a requested aerial photograph analysis already evidence?
An application initially documents only the procedural step initiated. Only the available assessment, together with its spatial scope, can be read for further planning. The measures that follow must be clarified for the specific project.
Does every aerial photograph analysis automatically lead to clearance?
Clearance is not a blanket next step for every enquiry. Existing knowledge, any investigation required and its results must be distinguished. Further work needed follows from specialist assessment and coordination with the competent authorities.
Does a survey signal mean that a bomb has been found?
An anomalous survey signal alone is not unambiguous identification of explosive ordnance. It must be assessed by specialists. Further steps required depend on the results and conditions of the specific investigation area.
May an old investigation report be used for revised plans?
It may remain an important basis. However, compare the location, depth and conditions of the new works with its scope of validity. If it does not clearly cover the change, this gap must be clarified by specialists before the ground interventions concerned.
How should we respond to a suspicious object during work?
Stop the affected work immediately and neither touch nor move the object. Leave the immediate area, warn others and report the find to the police on 110 from a safe distance. Further steps follow official instructions.
Which document demonstrates the area actually addressed?
The relevant results report with maps, investigation scope and limitations. An enquiry or appointment confirmation documents a different procedural status.
Why may different subareas need different next steps?
Their existing knowledge, interventions and investigation conditions may differ. Further needs are determined for each area from the existing specialist status.
Which cost factors matter for the next specialist commission?
Effort depends on usable earlier documents, preparatory work and access required, area size or the number and depth of investigation points, the suitable method, survey conditions, interpretation and documentation. Identify the specialist status already achieved and the findings still outstanding. Services still required are offered for the specific task within their permissible scope.
Project enquiry
Prepare the first technical discussion
Show the existing specialist status
Attach complete results and outstanding enquiries with their plan references. Send the current site plan, existing assessments and the latest investigation report. Also identify the next proposed groundworks and the outstanding specialist question. This enables a focused discussion of the commission required in the Arnsberg administrative district. A newly received result is assigned to the appropriate plan revision and intervention. Answered questions and remaining limitations remain traceable in the shared overview. Identify the project address, cadastral parcels and current work status. Missing appendices or responses are identified with their purpose so that specialist coordination can build specifically on existing knowledge.
Identify the next intervention
Describe the approaching groundworks and the findings required for them. Identify the construction area, route and borehole positions on the site plan, together with the respective proposed intervention depths. Add construction dates, known conditions, utility plans and existing aerial photograph analyses. State the decision or specialist clarification you now require. Known interfering objects and access limitations form part of the initial information. Investigations and protective measures required are clarified before preparatory or further ground interventions; the next commission is coordinated with its specific permissible scope.
Specialist measures in the project sequence
Specialist measures in the project sequenceInvestigation methods and limitations
Investigation methods and limitationsAssign the region and project location
Assign the region and project locationUnderstand the construction task and project setting
Understand the construction task and project settingCoordinate the necessary recovery task
Coordinate the necessary recovery task
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.
