Project pathway
The quickest route to the right decision.
Ordnance assessment in Recklinghausen: coordinate utilities and ground interventions
If a utility lies at a planned investigation point, this must be clarified before ground intervention. For projects in Recklinghausen, FONTANA-EOD supports commissioned preparation and documentation of the ordnance investigation. Existing utility information is compared with the intended working areas. A utility plan does not replace ordnance evidence.
Record the origin, date and outstanding details.
Mark areas where ground intervention is not permitted on site.
Check whether the investigation still fulfils its task.
Assess the construction project
Prepare utilities and the planned investigation together
Known utilities may affect where an investigation can take place. For your Recklinghausen project, we compare planned ground interventions with available ordnance and utility documents. Excluded areas and outstanding questions remain clear so the specific specialist task is defined before an agreement.
Project site
Connect the site with the specific construction task
Link Recklinghausen's responsibilities and utility task
The town of Recklinghausen identifies the local public order authority and explosive ordnance disposal service at the Arnsberg District Government for the procedure. Its document on utility conditions expressly separates them from the ordnance investigation. Required details are brought together for your project without inferring an absence of utilities from an ordnance result.
The project address is linked to the cadastral plot, site plan and investigation points affected. On-site markings use the same reference as the plan. Where several areas or sections belong to the project, label them clearly. Local assignment helps compare utility documents with the planned ground intervention. If a starting point changes, consider its new location separately against the information available for it. For a property in another municipality, that municipality's own procedure remains applicable. Further project locations are listed in the regional overview.
The overview of the Münster administrative district provides further local information for the regional context of your construction project.
Local context
Clarify utility conditions before investigation
Official assessment and documents in Recklinghausen
For construction involving ground intervention, Recklinghausen first describes an application for aerial photograph analysis. Where relevant indications arise, an ordnance investigation application is required before construction starts. The town provides its own document declaring utility conditions. Ordnance documents and utility information are needed separately.
The chronicle of Recklinghausen describes destruction of the main station and much of the Nordviertel in the air raid of 23 March 1945. For investigation of a specific area, suitable historical images and records are assessed with their actual locations. They help trace earlier buildings, transport areas and later changes. Today's utilities are additionally clarified through appropriate current information. Historical analysis and assessment of existing utilities each provide their own information for groundworks preparation.
Clarify utility conditions before investigation
The declaration requires clear on-site marking of areas where ground intervention is not permitted, for example because of existing utilities. According to this document, the Westfalen-Lippe explosive ordnance disposal service does not establish utility conditions itself. Its contact for this is the local public order authority. Necessary utility information must therefore be clarified before investigation.
For former operational, storage, railway or commercial areas, documented alterations are compared with planned ground interventions. Wartime damage, reconstruction, demolition, fill and excavation may have shaped ground changes insofar as documents evidence this for the area affected. Earlier utility locations are compared with current installations. Newly laid routes or filled sections remain distinguishable by their respective dates. Investigation considers historical indications, current installations and the planned task together; a use category alone does not determine investigation needs.
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 town of Recklinghausen describes applications before planned ground interventions. Its declaration of utility conditions defines local marking duties and associated documentation. The KampfmittelVO NRW governs state tasks and the prerequisites for certain private activities.
The principles of clearance planning connect the investigation with its subsequent treatment. The geophysics guidance in the BFR KMR supports technical method selection. The documentation requirements relate results to the areas addressed. The North Rhine-Westphalia Ministry of the Interior explains state explosive ordnance disposal.
The BFR KMR describe specialist work on federal properties. Locally applicable requirements and responsibilities are established separately for the Recklinghausen project.
The permit, qualifications and responsibilities for the specific activity are assessed under the Explosives Act and the First Ordinance to the Explosives Act. The risk assessment under Section 5 of the Occupational Safety and Health Act relates to the planned activities. The DGUV Information 201-027 addresses preventive investigation and clearance of conventional explosive ordnance and defines its scope. The references it explains to DGUV Regel 113-003 concern specific activities involving explosives; they are not applied indiscriminately to every construction investigation.
For private activities in North Rhine-Westphalia, the specific requirements of the exceptions under the KampfmittelVO and the official guidance must be observed. The private contract connects technical suitability with the scope provided for in law. The authority's state of knowledge and the permissions required for the activity are checked before an agreement.
Working together
Distinguish the tasks of client, designers and specialist contractor
Client and operator
The client describes the project and provides the available project records. The operator adds requirements for use, access and timing. A coordinating contact brings the parties together; individual tasks remain assigned to the named parties. Before commissioning, it is clearly recorded what information is missing, who will obtain it and what decision the result is intended to prepare.
Planning and construction management
The specialist designers describe areas, depths, construction methods and changes. Site management coordinates the planned sequence with the construction contractors and agreed specialist works. Results are assigned to the respective intervention. A technical plan change is communicated early enough for its effect on the survey task to be assessed before construction. Organisational construction stage boundaries remain distinguishable from technical survey boundaries.
Specialist company and competent bodies
The private explosive ordnance specialist carries out the agreed investigation and documentation work. Requirements and decisions of public authorities are addressed with the responsible bodies. The documents needed for a particular procedure depend on the location and project. The technical report describes the work carried out, including its documented area, depth and scope. Decisions reserved for public authorities are made by those authorities.
The town of Recklinghausen is the local contact for ordnance clarification before ground interventions. It involves the state explosive ordnance disposal service at the Arnsberg District Government. For that service, the local public order authority is the contact for utility conditions. The responsible person clarifies details in the utility declaration before confirming it. Permissible private specialist tasks are agreed with their specific investigation and documentation scope. For project locations outside the town, the responsible municipality is determined from the actual address. A need for ordnance recovery is coordinated with the permissible task and the competent authorities.
Investigation task
Which specialist task comes next?
First identify the different specialist questions
The current construction project establishes the findings needed on utilities and ordnance. Check which existing document answers which question. Historical aerial photograph analysis does not describe a current utility route. Further investigation selection follows the remaining specialist need and actual site conditions.
Assess historical documentsRelate achievable findings to limitations
Known installations may restrict investigation and interpretability. Consider these conditions before defining the service. Necessary additions and remaining gaps are described traceably. For a private commission, also check prerequisites for the specific North Rhine-Westphalia activity and the authorities' state of knowledge.
Compare investigation methodsProject types
Relate utility information to each location affected
State plan version and origin
Compile available utility plans with issuer, date and spatial scope. Also identify known differences between the plan and local conditions. A missing entry does not replace clarification of actual installations. Those involved must be able to identify established information and where a statement or coordination is still missing.
Document findings and their limitationsShow excluded areas clearly
Areas where no ground intervention is permitted are assigned traceably in documents and on site. Record the basis of the boundary and who clarifies outstanding questions. A marked restriction is not a finding about ordnance conditions. It initially describes a prerequisite to consider during further work.
Coordinate the sequence and tasksAssign relocated investigation points again
If a planned point is to change because of a utility, clarify the specialist effect before execution. A neighbouring point does not automatically answer the same question. Document the original location, proposed change and reason. Compare the finding achievable from it with the actual investigation objective.
Document location changes and limits of findingsPreparation
Prepare the scope and commission together
Before commissioning, define the investigation needed, utility information available and task permissible for the Recklinghausen project. Describe the ground intervention, working area and information still outstanding 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 realistic programme distinguishes technically resolved work from prerequisites that are still outstanding. If only part of a site will be accessible, the commission must take this into account. Handover and assessment of the results also need time in the construction programme. The schedule and effort are agreed once the scope, access and prerequisites are clear. This coordination brings together the specified scope, access, documents, site conditions and the date by which a decision is needed.
Discuss the scope and scheduleTasks at the site
Compare utility information with planned ground interventions
01
Origin and status of information
Record the origin and status of every plan and statement. Identify contradictions and missing details. If several statements are brought together in an overview, their original documents must remain assignable.
02
Location and depth of groundworks
Mark the location and depth of planned groundworks. A property outline is insufficient for individual investigation points or separate areas. Show where utilities or other restrictions affect the planned work.
03
Areas where ground intervention is not permitted
Mark areas where no intervention is permitted. The plan and on-site markings must agree. If this leaves an area uninvestigated, the result plan must show that too.
04
Responsibility for outstanding utility questions
Define who clarifies outstanding utility questions and passes on changes. Unconfirmed assumptions on a plan must not be treated as another responsible person's declaration. Identify the responsible people before investigation.
Project documents
Documents that establish the next step
Keep utility evidence as separate documents
Utility information and ordnance reports serve different purposes. Both belong in preparation with their respective status. A shared overview helps spatial assignment but does not replace the underlying documents. Unknown routes or missing details are recorded separately and clarified with those responsible before affected work.
The utility declaration provided by Recklinghausen requires complete, clear on-site marking of areas where ground intervention is not permitted at the time of work. The person confirming it must prepare the existing-utility clarification and local assignment needed. According to the document, work must not start if required markings are missing. The markings are photographed together with the ground interventions. The photograph is assigned to the plan used and work section so its purpose remains clear later.
The form distinguishes areas, indications of suspected ordnance and suspected unexploded bomb points. Existing numbers are linked to the site plan and applicable investigation information. The utility conditions to clarify locally concern this actual working area. Those responsible agree who obtains the information needed and updates the markings. Before a changed ground intervention, this reference is checked again. Plan changes are passed to those preparing access, local briefing and execution. Everyone must be able to use the same clearly identified version when work starts.
Pass changes through to site management
Changed points, excluded areas and investigations not performed must remain traceable in the result. Site management receives the actual processing status and associated limits. Earlier plans are not used as evidence of execution. For unresolved areas, the next step needed is expressly identified and agreed.
Before handover of results, compare planned and actual scope. Identify measurements not performed, relocated points and areas with restricted interpretability. Specialist interpretation describes the question answered and further work needed. Complete maps and annexes remain linked to the report. After clearance work, the clearance record with its scope, results and limitations supplements the evidence chain for points or areas actually treated and the associated plan version. If construction plans change later, site management compares the new intervention with these details. A new phase uses existing results within their documented area and clarifies additional requirements separately.
Construction sequence
Coordinate investigation and construction sections
Before the planned investigation date
Hand over the site plan, planned ground interventions and available utility information together. Identify areas that cannot be addressed and outstanding statements. Agree who clarifies local assignment and outstanding prerequisites. Scheduling builds on these details without treating unresolved points as already complete.
After a change in the construction area
Changed utility conditions or a new investigation location are passed to the specialists involved. Compare the actual sequence with the original commission. Documentation can then distinguish the question answered from those still outstanding. Additional work is coordinated with specialist and organisational input before execution.
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
What to check for a relocated investigation point
Historical indication and current installations
A historical aerial photograph analysis may provide the reason for an investigation. Actual site conditions must additionally be known for execution. A utility plan does not establish ordnance findings; a historical indication does not describe a precise utility position.
For each investigation point, identify its label on the plan, intended depth and reason for investigation. Associated utility documents retain their origin and date. Conflicting statements or differences from visible site conditions are clarified with those responsible before intervention. A current plan version is handed to the specialist contractor and site management. The historical ordnance question remains expressly distinguishable from the existing-utility clarification needed for safe execution.
Influence of existing infrastructure
For a survey metallic installations and existing infrastructure may affect the method or interpretability. Check the significance of known utilities for the specific investigation. This can be assessed only from the task and local conditions.
Metallic utilities, reinforcement and other installations may affect measurements. Their significance depends on the method, target, distance and local conditions. Investigation planning describes what finding is achievable under these conditions. Where areas have restricted interpretability, document their locations and remaining questions. A suitable supplementary method or other investigation step is assessed from this specific need. Selection remains linked to specialist assessment and state-law prerequisites.
Alternative point and unresolved investigation areas
If an investigation point must be omitted or relocated, check whether the task can still be fulfilled. The clearance plan or the investigation plan must record the change. An accessible alternative point does not necessarily provide the same finding as the originally planned point.
For a necessary point change, show original and new positions on the same site plan. Record the reason and specialist assessment of its effect on the investigation objective. For a suspected location, the investigation must remain related to its actual position and the finding needed. Clarify access and existing utilities at the alternative location separately. An omitted area remains visible on the result plan. Site management receives the actual processing status to assess steps still needed before the groundworks planned there.
Next steps
From utility documents to on-site markings
Initial contact and assessment of the evidence
At first contact, describe planned groundworks and the outstanding ordnance question. Available ordnance reports, official notifications and utility documents are compiled in full with their origins and dates. If historical information is missing, the necessary aerial photograph analysis is initiated through the local public order authority. For unresolved use or ground information, supplementary records and images are researched and assessed by specialists. Information gaps are assigned to the investigation area concerned.
Coordinate working areas and methods
Compare the location and depth of planned ground interventions with available utility information. Excluded areas receive clear assignment on the plan and on site. The suitable investigation method is determined according to ground conditions, targets, interference and access. Official measures and permissible private tasks are assigned to their respective responsibilities. The responsible person clarifies details needed for the utility declaration. Necessary preparation is identified before the investigation date.
Perform the work and assess changes
The planned survey or suitable supplementary specialist supervision is undertaken under the defined conditions. Changes to points or local prerequisites are agreed and added to the plan. Measurements and observations are interpreted by specialists and assigned to areas addressed. Assessment identifies what finding was achieved and where further investigations or coordination are needed. Markings and ground interventions are photographed in accordance with the utility declaration.
Document findings and prepare the subsequent decision
The result plan distinguishes investigated areas, those with restricted interpretability and omitted areas. The report, maps and relevant changes are handed over in full to further planning. Before the next ground intervention, site management compares planned work with the documented scope and official status. Outstanding tasks have a clear spatial reference and responsible person. Changed areas, depths or investigation points are compared again before execution.
Documentation
Photograph markings and document results
Document markings and investigation scope together
The utility declaration requires photographs showing markings together with ground interventions. Assign images to the plan used. Photographs replace neither utility information nor specialist interpretation of the ordnance investigation.
Project responsibilities
The BFR Kampfmittelräumung provide specialist guidance for planning and documentation. Private activities are subject to the limits of the North Rhine-Westphalia KampfmittelVO. FONTANA-EOD supports the commissioned task permissible in each case. Official decisions and declarations by people responsible for utilities remain separate.
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
A marking needs an explained purpose
A visible marking may serve different tasks. Its colour or location alone does not establish its specialist meaning. Assign markings to their associated plan and responsible body. Photographs can record conditions but replace neither utility information nor assessment of the planned investigation.
Understand investigation reports and their limitationsUninvestigated areas remain identifiable in the report
If a location could not be addressed because of a utility, document its position and the reason. Results from neighbouring areas are not automatically transferred to it. Construction planning depends on the finding actually available. The further handling needed for the unresolved location is clarified separately.
Understand the service scopeDesign and findings
Documents for the next construction decision
Historical evidence and the current design
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessmentSpecialist reports for site management
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports
Further technical topics
Further technical information for your project
Determine the specialist service from the planned groundworks
Historical assessment, technical investigation and subsequent work answer different questions. In your enquiry, identify the planned groundworks and the information needed to prepare them.
Compare servicesCoordinate the project sequence with everyone involved
Preparation connects the commission, site work and handover of findings. Changes to the project can then be incorporated into technical coordination in good time.
Process and documentationQuestions from planning
Questions about utility conditions before an ordnance investigation
Does the explosive ordnance disposal service also clarify utility conditions?
No. According to the declaration linked by Recklinghausen, the Westfalen-Lippe explosive ordnance disposal service is not responsible for this. Its contact for utility questions is the local public order authority. Before ground interventions, agree what information and documents your project must provide. Clarify these prerequisites early before planned groundworks so applications, preparation and investigations needed are included in the programme.
Is a utility plan without on-site markings sufficient?
The declaration additionally requires clear on-site markings: areas where ground intervention is not permitted must be identifiable. A plan alone does not fulfil this requirement. Clarify uncertainties with those responsible before work.
Can an investigation point simply be relocated?
Not without specialist review. A relocated point may provide a different finding. Check whether it still fulfils the intended task and which areas remain unresolved. Record the change in the agreed plans and later report. The method and achievable finding are assessed according to ground conditions, targets, depth and interference. Document original and new locations, reason for change and specialist effect.
Is a utility clearance also ordnance evidence?
No. Utility information and ordnance investigations answer different questions. What matters is what each document confirms and for which area. The word clearance alone does not make it evidence for other specialist questions. The sequence links document review and necessary historical analysis with method selection, investigation or suitable supervision, assessment and documentation. Results are compared with the plans before the next ground intervention.
What should happen if a suspicious object is encountered during work?
Stop work in the affected area, do not touch or move the object and keep your distance. Keep other people away. Notify the local public order authority or police on 110 immediately and follow the authorities' instructions.
What information helps with conflicting utility plans?
The origin, date and scope of each plan, and the specific location of the conflict. Clarify the difference before affected work rather than resolving it by arbitrarily choosing a plan. Complete reports, official notifications, current ground intervention plans and available utility documents are handed over according to their respective purpose.
Which factors determine effort and costs?
The method, investigation scope, depth, interference and access determine the effort required. Preparatory, accompanying and follow-up work and possible difficult circumstances are considered in the specific process. Unresolved utility routes, omitted points or additional investigations may affect further work. The service agreement identifies the permissible specialist task and its evidence; cost responsibilities are clarified with those involved.
Does a visible marking evidence investigation of a location?
A marking alone evidences neither a method nor a result. Its assigned meaning and complete documents for the investigation actually performed are decisive.
Project enquiry
Utilities in the planned investigation area?
Assign utility information
Send available plans with their dates and origins, and known differences or outstanding information. Add the project address, cadastral plot, construction phase, schedule and decision requested. Different plan versions are assigned traceably. The sector overview explains typical interventions and the documents they require.
Show working areas
Mark planned ground interventions, excluded areas and point changes already under consideration on the current site plan. Identify the ground intervention due first and people responsible for outstanding utility questions.
Survey methods and limits
Survey methods and limitsSteps from planning to report
Steps from planning to report
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.
