Technical map view of the Stuttgart administrative district with Stuttgart marked for explosive ordnance assessment and surveying by FONTANA-EOD

Explosive ordnance surveying in Waiblingen

An aerial photograph assessment is already available for your Waiblingen property. FONTANA-EOD helps project owners, designers and site managers compare its conclusions with the earthworks planned today and define necessary additions. Send the complete report, its appendices and a current site plan showing the proposed ground disturbance and depths.

Report

Provide the complete report.

Planned works

Identify changes since the assessment.

Specialist commission

Plan only the additions required.

Assess the construction project

How is an existing aerial photograph assessment reused for Waiblingen?

For an explosive ordnance investigation before construction in Waiblingen, an existing report, including maps and limitations, is compared with the current design. The investigation area, construction task at the time and known subsequent changes are decisive. Usable findings are retained; outstanding questions determine the supplementary research or investigation commission. Document age alone does not establish the need for a new investigation.

Project site

Assign Waiblingen documents to the current construction area

Illustrated map of Baden-Württemberg with its three-lion coat of arms, a tablet, white FONTANA-EOD hard hat and notebook.

Use the complete Beinsteiner Straße assessment

The published aerial photograph assessment of 3 February 2021 contains a favourable result for its named investigation area and project. Further use also includes its maps and limitations. For your own construction area, these details are compared with present-day areas and ground disturbance; proximity alone is insufficient. According to the official municipality directory, Waiblingen is a major district town in the Rems-Murr district, Stuttgart administrative district, in Baden-Württemberg. The precise project address and cadastral plots determine the local assignment. For a location in another municipality, its contacts must be involved. The explosive ordnance disposal service at the Stuttgart regional authority is responsible statewide. Further locations are listed in the regional overview.

Local context

Wartime uses and the property investigated

Read the favourable result with its scope

For Beinsteiner Straße 163, an aerial photograph assessment by LBA Luftbildauswertung GmbH of 3 February 2021 has been published by the regional authority. It found no indications of increased potential explosive ordnance contamination. The conclusion is expressly limited to the investigation area shown and the period of the project described. The assessment applies within the stated information base and limits of the commission at that time.

The assessment published by the regional authority also describes the local Second World War background: Elma Fluggeräte relocated from Stuttgart-Bad Cannstatt to Waiblingen in 1941, where aircraft parts were manufactured and repaired. The report names bombing on 21 February 1944 and artillery fire before the town was captured in April 1945, which particularly affected its western part. During research, such information about uses and events is assigned to a specific property. The historical town-wide context and defined investigation area remain separate: the photographs assessed provided no indications of unexploded high-explosive bombs in the construction area investigated. For other areas and new ground disturbance, the findings available there are needed.

Connect the complete report with the current design

Preparing your own project therefore requires more than a report's final sentence. Which area was considered, what information was used and which works underlay the assessment? If you adopt a report, its maps and limitations should be handed over with it. A result for a neighbouring property cannot be transferred simply because the distance is short.

The Beinsteiner Straße report rates the image quality as moderate. It states that the immediate investigation area was poorly visible for high-explosive bomb craters and very poorly visible for unexploded bomb impacts. Read these details together with the favourable result. Post-war clearance or ground changes are not considered in the aerial photograph assessment described. A present-day enquiry therefore adds known later ground disturbance and its location. This specialist review determines which conclusion can be used for the new project and whether further supporting information is needed.

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 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 with its documented area, depth and service scope.

Investigation task

Which specialist task comes next?

Determine what can be concluded from the whole report

A historical assessment uses the photographs available for it and describes their limitations. The result, task and limitations are therefore read together. Specialists determine whether the current design requires further work. A favourable finding is neither discarded outright nor extended to other areas without review.

Assess historical documents

Relate supplementary investigations to the outstanding task

If the comparison identifies further needs, the area, objective and local conditions are defined. Known installed structures and access belong in preparation. The appropriate method must suit the outstanding question. The scope reached and remaining limitations are documented and coordinated with the subsequent construction sequence.

Method selection considers suspected target objects, the soil profile, necessary depth range and possible interfering objects together. Utilities, fill containing metal, reinforcement and foundations may affect measurement conditions. The investigation receives a defined specialist commission. A borehole clearance record is kept with its point location and documented depth range. For any required deep surveying or area clearance, the areas addressed and agreed scope of services are recorded. Locations that cannot be sufficiently assessed remain identifiable in the results with their locations and further needs so that subsequent works can be prepared technically. The Surveying is matched to this investigation objective.

Compare investigation methods
Project types

Use existing assessments selectively for new groundworks

Illustration: aerial photographs and maps on two screens and printed on a desk.

Hand over the complete report rather than an extract

Send the cover sheet, results text and all map appendices together. The date, commission and investigation area must be traceable. Information about the imagery used and its limitations also forms part of the assessment. An isolated favourable conclusion without its context is insufficient to define the usable scope for a new construction task.

Arrange specialist assessment of historical evidence
Illustration: two people review plans and documents at a table beside a construction vehicle.

Show differences from the project at the time

Draw new excavations, foundations and connections on the current plan. Add known subsequent filling, excavation or demolition. Specialists compare this information with the earlier assessment. An unchanged street name or address does not establish that all planned ground disturbance is unchanged too.

The respective elevation references are also needed for comparison. A depth measured from an earlier ground level can be related to today's works only with subsequent filling or excavation taken into account. Add existing as-built plans and known changes to ground layers. A laterally relocated utility trench may affect a volume of ground not previously considered even at the same depth. Mark such changes on the current plan. The specialist planner can then assign existing results to the area actually needed and justify any supplementary scope required.

Document findings and their limitations
Illustration: two people review plans and documents at a table beside a construction vehicle.

Assemble the conclusions used traceably

Record which reports continue to be used and what additions are made. Original limitations remain visible. New results receive their own reference to the current design. Site management and contractors can then identify which conclusion applies to their working area and which questions remain outstanding.

Document findings and their limitations
Preparation

Prepare the scope and commission together

Establish what needs to be known before commissioning the work

First establish which decision the commission needs to support. Is the task an initial assessment of existing documents, an investigation of a specific area or examination of an anomaly that has already been assessed? These tasks require different evidence. A general wish for safety does not define an investigation that can be carried out. The enquiry therefore specifies the groundworks, location, depth and available findings. Suitable specialist work and the required reporting are then agreed on that basis.

Define the specialist task

Coordinate 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 programme

Agree 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 schedule
Tasks at the site

What still applies from earlier planning

01

Locate the area investigated

Place the report's map alongside the current site plan. Plot divisions, changed access roads or a different building position may make comparison difficult. A traceable matching of boundaries is needed. An address helps locate the file but does not replace the spatial definition of the investigation commission at the time.

02

Describe the current project in full

Besides the excavation, identify planned utility trenches and preparatory ground investigation points. If these works were added later, this should be clear from your enquiry. The specialist assessment can then distinguish which parts are already covered and which ground disturbance needs further information or investigation.

03

Communicate subsequent ground changes

Where known, identify intervening excavation, filling and demolition. Not every historical report considers later changes. Information about alterations is not itself a new investigation result, but helps clarify whether earlier conclusions still match the existing ground and planned ground disturbance.

04

Include the appropriate plan version

Waiblingen refers to its geoportal for legally binding development plans and lists ongoing procedures separately. Record the plan revision in the documents handed over. A procedural draft and a legally binding development plan serve different purposes; both are also distinct from a specific explosive ordnance report.

Project documents

Documents that establish the next step

Compare plan boundaries and property changes

A later plot division or changed access road may make older maps difficult to assign. Include current property details and known earlier names. Unclear interfaces are identified as outstanding questions. Specialist assessment clarifies the location reference before a conclusion is used for new ground disturbance.

For historical plans, clarify whether their boundaries can be located using surviving reference points or other maps. Street names, buildings and cadastral plot names may have changed since the earlier investigation. Retain information about the location references at that time too. An area drawn on a plan remains marked unresolved while its relation to today's construction area cannot be traced reliably. The research still needed targets this gap. A favourable result statement is used for planning only together with the area to which it actually belongs.

Identify the planning-law status separately

The municipal documents distinguish ongoing procedures from legally binding development plans. State the version used when handing it over. This information helps orientation in the project but does not replace an explosive ordnance report. Read the various documents according to their respective tasks and consider them together for the sequence. A clearance record for clearance work actually carried out is assigned to the technical results status: areas addressed, methods, findings and outstanding tasks are compared with the current design.

Construction sequence

Coordinate investigation and construction sections

Start with complete earlier documents and a current plan

Send the report with its maps and identify the next planned works. Mark differences from the earlier project. Specialist comparison can then use existing findings selectively. Missing appendices are identified, and additional investigation questions follow actual needs.

A specialist commission may initially concern obtaining and assessing missing appendices. For a new technical investigation, by contrast, the area, depth and results documents needed are described. The specification separates these tasks traceably and gives all bidders the same plans and conditions. These include known installations, access options, proposed construction sections and dependencies on other trades. Agree which supporting information the clients provide and which works the specialist contractor carries out. If the design changes before deployment, the investigation preparation receives the new version.

Hand over additions with existing results

New reports are brought together with documents still in use. Each conclusion retains its plan and area references. Site management receives the current status, including outstanding tasks. If the design changes again later, compare the changed ground disturbance with this status before construction.

In the project file, the original commission and associated site plan remain connected to the results report. A survey report describes methods, investigation areas, measurement limitations and assessment of findings. A clearance record documents the scope of clearance work actually carried out. For phased construction, usable results and outstanding tasks are handed over for each section. This information remains available if the designer or construction contractor changes. Subsequent use of a report follows its documented area, depth and scope of services and the conditions of the new ground disturbance. The Clearance documentation records this documented scope.

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 assessment

Magnetometric 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 magnetometry

Electromagnetic 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 surveying

Ground-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 limitations

Deep-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 interventions

Survey 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 construction
Technical assessment

Add work where existing findings are insufficient

Have the historical assessment reviewed by specialists

A Historical aerial photograph analysis answers questions using the imagery available to it. It does not measure the present-day ground. If an existing assessment is usable, it is considered in further planning. Whether supplementary work is required depends on outstanding questions; a document's age alone does not determine the next method.

If an area suspected of containing explosive ordnance in Waiblingen is to be examined, the commission describes the specific outstanding question. Where supporting information is missing, historical research and aerial photograph analysis are carried out using appropriate records and imagery dates. Existing maps and investigation results may narrow the scope of new work. An old report for an excavation, for example, does not answer a question about a utility connection added later without comparison. For each area needed, record the findings available, investigations required and the decision their results are to prepare.

Define a technical commission precisely

If the assessment identifies a need for on-site investigation, the Surveying must suit the objective and construction-area conditions. These include known installations and possible interference. Agree how areas that cannot be sufficiently investigated are documented and which questions may still need addressing after the site work.

Coordinate preparation with construction

If a Clearance plan is needed, it should bring together the planned groundworks and investigation steps required for them. This also applies to works intended to make access to the area possible in the first place. Visual inspection during excavation alone does not replace proper specialist clarification; an approach during construction must be suitable for the specific case.

For excavation monitoring, the suitable working method and on-site prerequisites are defined. Agreed monitoring describes which areas are addressed and how findings are handed to those responsible. Working areas, traffic safety and other specialist tasks are coordinated with the construction trades. For investigation of a finding, access, the approach and protective measures required are agreed. A suspicious object actually found is reported to the police, who arrange the next steps. Results and prerequisites still outstanding are provided to site management for the subsequent works affected. Any necessary Ordnance recovery is coordinated with the respective specialist task and responsibility.

Next steps

How to prepare an enquiry using an existing report

01

Send the report and appendices together

Where possible, send the complete assessment including maps. If only individual pages are available, identify this gap. A summary may help initial orientation, but comparison of investigation boundaries often needs details found only in the appendices. The initial contact records the location, construction task and decision sought. The document review assigns existing reports and maps to the current ground disturbance design.

02

Mark differences from the old design

Draw new areas or changed ground disturbance on the current plan. A brief explanation of the change helps clarify the reason for the enquiry. You do not yet need to derive a technical solution from it. First assess whether and to what extent the existing state of knowledge needs supplementing. Where supporting information is missing, historical research and aerial photograph analysis are carried out. Method selection considers their results, target objects, the volume of ground, sources of interference and access.

03

Clarify outstanding points before construction begins

When agreeing the specialist commission, the services needed and their prerequisites are defined. Consider existing official requirements. A scheduled date should not lead to work starting on an unresolved area. The sequence follows specialist assessment of the proposed works. The agreed surveying or suitable monitoring addresses the defined areas. Analysis assesses findings together with their measurement limitations and assigns them to the planned groundworks.

04

Pass on the supplementary results

Site management and contractors need the documents relevant to their working areas. Pass on new reports together with earlier versions still in use and identify where each conclusion applies. This helps prevent later reliance solely on an outdated summary from an earlier planning stage. The report and location appendices document the scope carried out. The decision on subsequent steps defines further investigations or coordination for outstanding areas; those responsible receive the results.

Documentation

Keep specialist services and state duties distinct

Findings and their scope

In Baden-Württemberg, the explosive ordnance disposal service at the Stuttgart regional authority operates statewide. It offers advice, searching and recovery within available capacity, with costs reimbursed. If these services cannot be undertaken there, private specialist contractors must be commissioned. The state service renders recovered explosive ordnance safe.

Project responsibilities

FONTANA-EOD discusses the investigation needs for your Waiblingen construction project and suitable specialist services with you. Your design and existing findings are the starting point. Outside their direct federal scope, the BFR KMR provide technical guidance; they do not establish an additional blanket approval or investigation requirement for every property.

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 task

The 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

Distinguish historical assessment from current on-site investigation

A historical aerial photograph assessment describes findings from its imagery. An on-site technical investigation has its own task and documented scope. Specialist comparison determines which conclusions the project needs. The mere existence of an older report does not determine the next service.

Understand investigation reports and their limitations

Communicate known subsequent changes

Filling, excavation and demolition may be relevant to the current assessment. Describe known changes with their locations and available documents. This does not automatically determine a particular method. The specialist planner assesses how these details affect use of the existing state of knowledge. Conclusions from the old report that remain usable are handed over with their original limitations together with the new results.

Understand the service scope
Design and findings

Documents for the next construction decision

Illustration: aerial photographs and maps on two screens and printed on a desk.

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 assessment
Illustration: two people review plans and documents at a table beside a construction vehicle.

Specialist 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
Four people in orange high-visibility vests in front of two excavators on a construction site.
Person with a yellow survey cart on a footpath in front of a hedge.
Questions from planning

Questions about older reports and new earthworks

Must an older report always be replaced by a new investigation?

No. First check what the existing report covers and whether its conclusions are usable for the current design. Outstanding questions may require supplementary work; document age alone does not decide this.

Does the Beinsteiner Straße result also apply to other properties?

No. The published assessment relates to its named investigation area and project. Another construction area requires its own available findings and planned ground disturbance.

Which documents help with comparison?

The complete report with maps, a current site plan and details of proposed ground disturbance. In particular, mark changes from the design at the time and identify known later ground changes. Agree the needs before the groundworks affected. For preliminary investigation by the KMBD at the Stuttgart regional authority, the application and precisely defined site plan are submitted in accordance with its documentation. The sequence connects document review, necessary historical assessment and method selection with investigation or suitable monitoring, assessment and documentation.

Is a development plan explosive ordnance clearance?

No. Planning-law documents and explosive ordnance reports have different tasks. The specific conclusions of the specialist documents, their investigation areas and limitations are decisive.

What applies if a suspicious object is found in the ground?

Stop work. Do not touch or move the object, and keep others away. From a safe distance, call the police on 110 and follow official instructions.

Why does information about the imagery belong in the complete report?

It helps explain the reach and limitations of the historical conclusion. The result and limitations are assessed together. Restricted visibility or image quality remains part of the assessment. For technical investigations, the respective measurement conditions and areas that cannot be assessed are documented in the report with their locations and further needs.

Should later filling be mentioned even without a separate report?

Yes, where known. Identify which details are evidenced and where the precise work remains unclear.

What determines the cost of supplementary work?

The research needed, areas and depths required, accessibility and interference determine the work involved. This also includes analysis, documentation and any further investigation of findings. Complete, usable earlier documents help define additional work. KMBD services and charges are considered separately from private specialist commissions.

Project enquiry

Prepare the first technical discussion

Send the complete report

Include results, maps, information about the imagery and limitations together. Add the project address, cadastral plots, conditions, existing aerial photograph assessments and utility and as-built plans with their respective revision status.

Make changes identifiable

Show new ground disturbance and known subsequent ground changes on the site plan. Identify the construction area, routes, boreholes, depths of ground disturbance and planned construction dates. Explain the project status, works due first and decision needed. For several sections, assign the respective documents and contacts.

Project enquiry

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.