Schematic map of Baden-Württemberg with its coat of arms, alongside a tablet, hard hat, notebook and pen.

Explosive ordnance surveying in Baden-Württemberg

For a construction project in Baden-Württemberg, the site's history and planned groundworks matter. FONTANA-EOD reviews existing findings and plans the commissioned investigation. We consider the ground, depths required and accessibility of the construction area.

Preliminary investigation

Review existing aerial photograph assessments.

Terrain and access

Clarify access roads and working areas.

Results for construction planning

Document areas and depths investigated.

Assess the construction project

What belongs in preparation for an explosive ordnance investigation in Baden-Württemberg?

Assemble the site plan, planned groundworks and existing explosive ordnance documents. Information from the statewide KMBD and the commissioned specialist service are related to the specific area. Terrain, access and possible measurement obstacles inform technical planning; results remain traceable together with their actual scope.

Documented location references

Reference projects in Baden-Württemberg

Select a project location on the map or in the location list. The associated entries lead to the protected reference overview.

32 locations · 56 assigned reference entries

The markers identify locations associated with documented references, not precise find or construction-site coordinates. Several entries may belong to one project. References without a reliable location assignment are available in the complete reference overview.

Map data: © 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

Project site

Connect the site with the specific construction task

Schematic map of Baden-Württemberg with its coat of arms, alongside a tablet, hard hat, notebook and pen.

Plan with a single statewide responsibility

The explosive ordnance disposal service at the Stuttgart regional authority is responsible statewide. The specific ground disturbance remains decisive for technical preparation: area, depth, terrain and existing findings are considered together. Commissioned specialist services and the duties of the responsible authorities are distinguished traceably in the project record. For assignment, the municipality, property and planned groundworks are identified together. For a project spanning several municipalities, the respective contacts and documents are assigned to individual sections.

The existing overviews for Stuttgart administrative district, Karlsruhe administrative district, Freiburg administrative district, Tübingen administrative district lead to the associated local information. Select the area of your construction project; the specific municipality and properties affected remain decisive for the enquiry.

Local context

Historical information and duties in Baden-Württemberg

Locate local wartime history spatially

The city encyclopaedia of Karlsruhe City Archive documents air raids on Karlsruhe in both World Wars. For the First World War, it names military offices, Deutsche Waffen- und Munitionsfabrik and the railway junction as target contexts. For the Second World War, it describes heavy raids in 1942 and 1944, including damage to businesses in the Rhine port and in urban districts. For a present-day construction project, such historical findings are connected to the specific location, former uses and documented ground changes. Records, wartime aerial photographs and existing assessments help define the outstanding questions for the construction area. The investigation is prepared using this information and the planned ground disturbance.

Duties of the statewide KMBD

The explosive ordnance disposal service based at the Stuttgart regional authority is responsible for all of Baden-Württemberg. It supports police authorities and undertakes, in particular, rendering ordnance safe, transport of recovered ordnance and destruction. Aerial photograph analysis by the KMBD is subject to a charge.

Arrange searching and recovery

Property owners must arrange searching for and recovery of explosive ordnance themselves. The KMBD offers this work within its capacity, with costs reimbursed; if no capacity is available, private explosive ordnance clearance contractors must be commissioned. FONTANA-EOD plans the commissioned works according to investigation needs and coordinates the necessary steps with the responsible bodies.

Coordinate specialist services and the official procedure

For scheduling, check the official application documents and current processing times early. A planned construction start replaces neither necessary preliminary investigation nor specialist clarification of existing grounds for suspicion.

Official basis

Information from the KMBD Baden-Württemberg helps assign the responsible bodies and preliminary investigation required to the planned project.

Working together

Distinguish the tasks of client, designers and specialist contractor

Client and operator

The project owner describes the project and provides existing project documents. The operator adds requirements for use, access and timing. A coordinating contact agrees the tasks assigned to them with those responsible. Before commissioning, the missing information, who obtains it and the decision the result is intended to prepare are recorded clearly.

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 contractor addresses the agreed investigation and documentation scope. Official requirements and decisions are clarified with the respective responsible bodies. The documents needed for a specific procedure depend on the location and project. The technical report describes the specialist work carried out; its conclusions are not presented without review as general permission for further groundworks or as an authority's decision. In Baden-Württemberg, the KMBD at the Stuttgart regional authority is responsible statewide. The responsible police and local police authorities are involved through the designated reporting procedures. For an actual find, KMBD specialists determine its further handling. The private specialist contractor and those responsible for the project coordinate their respective commissioned works with these state duties.

Investigation task

Which specialist task comes next?

Define the conclusion needed before the method

The available findings and planned ground disturbance determine the specialist task. The technical approach follows the conclusion needed for the specific groundworks. A slope or surfaced area alone does not determine a method. Local conditions are considered together with the objective and scope.

Compare methods according to the task and conditions

Consider limits of conclusions on site

Installed structures, terrain and accessible areas may affect execution and interpretation. The specialist planner describes these conditions. Areas not sufficiently covered remain identifiable in the results, with further work agreed for them. A general location or merely watching earthworks does not replace the specialist evidence required.

Compare investigation methods
Project types

Plan terrain and the investigation task together

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

Provide the historical findings in full

Existing aerial photograph assessments and associated statements are read together with the current construction plan. Conclusions for the specific area and their prerequisites remain identifiable. An older record may contain important supporting information. For the current task, check whether it matches the proposed construction project and what updating or further clarification is needed.

Arrange specialist assessment of historical evidence
Two people with a tablet beside a marked construction area; plans lie in the foreground.

Describe the actual groundworks precisely

Show excavations, trenches, boreholes and preparatory ground disturbance with their depths. Terrain and accessibility also belong in the enquiry. The specialist planner connects these details with existing findings. A general landscape description determines neither suspicion of explosive ordnance nor the appropriate investigation method for an individual area.

Compare specialist services
Illustration: two people review plans and documents at a table beside a construction vehicle.

Assign results to the next construction phase

Documentation shows which areas were addressed, to what extent and what limitations remain. It is handed over with the associated site plans. Additional works are compared with it. Site management thus receives a traceable basis for the specific section and can coordinate outstanding tasks selectively.

Document findings and their limitations
From the Rhine valley to sloping sites

Investigations on developed and sloping sites

Existing development and terrain help determine how an area can be investigated. Whether there are grounds to suspect explosive ordnance must be checked separately. A sloping site or proximity to a river alone does not establish them.

Rhine-Neckar and Upper Rhine

For industrial, commercial and logistics projects in the Mannheim, Heidelberg and Karlsruhe areas, existing utilities, foundations and filled working areas may affect measurement conditions. Historical documents and current site plans should be considered together.

For long routes or phased development, define which areas will be accessible when and actually need investigating.

Stuttgart and the Neckar region

Infill development, underground car parks and infrastructure in densely developed areas require a precise description of ground disturbance. Neighbouring buildings, reinforcement, shoring and existing traffic areas may restrict surveying.

Planning and investigation must therefore also cover the depths and peripheral areas later affected by foundations, anchors or excavation support.

Black Forest, Swabian Alb and southern parts of the state

On uneven or terraced ground, safe access, measurement paths and elevation references need particularly careful planning. Machinery selection and area productivity depend heavily on the specific conditions.

For projects around Freiburg, Ulm or Lake Constance, possible grounds for suspicion are assessed for the individual property just as in a major city.

Tasks at the site

Connect the statement to the specific groundworks

01

Establish a clear location reference

Show the property affected with its boundaries and the ground disturbance actually proposed. A shared file reference helps assignment but does not replace a complete spatial description. Preparatory works and additional construction areas also belong in the comparison.

02

Distinguish requirements from results

The statement may identify further work required. Check which of those tasks have already been carried out and documented. The associated reports remain available with their appendices. A stated requirement and evidence of it being addressed are different parts of the project information.

03

Define construction phases traceably

Determine which next work needs a conclusion. Different sections may have different access and depths of ground disturbance. Keep the investigation status separately identifiable for each area, even where commissioned together.

04

Compare new plan revisions selectively

Mark changes from the project already considered. Additional areas, greater depths or different preparatory activities may require a fresh comparison. Existing results are considered within their actual scope.

Our services

Services for preliminary investigation, surveying and clearance

The investigation needed depends on existing information and planned groundworks. Methods and scope of work are defined on this basis.

Aerial photograph analysis and assessment of grounds for suspicion

Historical wartime aerial photographs and supplementary documents help locate anomalies spatially. Existing KMBD assessments are compared with the present-day construction project.

Surface survey

For development and conversion sites, a method suited to the measurement environment is selected. Accessibility, conductivity, metal installations and possible interference affect interpretation.

Deep-ground and downhole surveys

For pile foundations, sheet piling or deep excavations, investigation needs are clarified for the depth range affected. A shared location and elevation reference is essential, particularly where terrain varies.

Area clearance

For defined suspected areas, the clearance objective, accessibility and working boundaries are specified. Later documentation must show the area actually addressed.

Excavation supervision

Where preliminary investigation is restricted, coordinated monitoring of earthworks may be required. Site management, equipment operators and technical supervisors need clear communication and decision procedures.

Recovery and further handling of finds

If anomalies are identified during investigation, the next steps are agreed with the responsible bodies. The agreed and permissible commission scope remains decisive. The responsible organisation undertakes rendering ordnance safe and destruction.

Project documents

Documents that establish the next step

Clarify access before work

Describe available access roads, working areas and visible obstacles. Specialist planners and contractors agree the prerequisites needed for the proposed service. Access not yet available remains visible in the sequence. A planned date is considered together with the prerequisites actually met for the section concerned. The results file connects the site plan, areas and depths with methods, measurement conditions and findings assessed by specialists. Volumes addressed and still outstanding remain distinguishable. For commissioned clearance works, the clearance record with associated location and results information belongs in the evidence file. Designers and site management can compare the next activity with this documented scope.

Bring official processing and specialist commissions together

Clarify which documents are already available and which response is still outstanding. The commissioned service receives a defined task and traceable prerequisites. Official responsibilities remain separately identifiable. Assumed dates are coordinated with the respective procedure without treating general information as a binding commitment for your own project. During phased handover, the report and plan appendices are passed on with outstanding tasks. Limitations caused by access or interference remain assigned to the respective volume of ground. Newly involved contractors receive the stage actually reached for their next task.

Construction sequence

Coordinate investigation and construction sections

Assemble the documents at the start

Send the current site plan with proposed depths and existing assessments and reports. Identify the planned sequence and outstanding information. Joint coordination defines the specialist task. Necessary prerequisites and further steps are thereby connected to the specific construction project.

Compare again if delays or changes occur

Check with those responsible whether existing documents still match the project and require updating. New areas or deeper ground disturbance are identified. The specialist planner compares the previous coverage. Existing results continue to be considered within their actual scope and documented limitations.

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

Distinguish historical assessment from technical investigation

Understand the historical findings available

Existing aerial photograph assessments and official statements are read with the current ground disturbance plan. Their tasks and spatial coverage remain identifiable. Technical planning builds on these findings and describes the further conclusion needed for the proposed groundworks.

Consider measurement conditions in specialist planning

Available access, installed structures and local interference affect the investigation. The appropriate approach is matched to the investigation objective. An earlier method or general area name does not automatically determine the method for a new task.

Identify the remaining needs specifically

Areas not sufficiently covered remain documented as outstanding tasks. Supplementary steps receive a defined spatial and technical scope. A partial report thus becomes usable for further planning without extending its conclusions to areas not yet investigated.

Next steps

From the current plan to documented investigation

01

Compare the project enquiry and documents

Provide the statement, existing reports and current ground disturbance design with their appendices. Unclear spatial references and missing documents are identified. Initial contact includes the project address, construction phase and forthcoming groundworks. Existing information and specialist reports are reviewed with their appendices against the current plan revision, spatial coverage and outstanding questions. The first coordination clarifies the conclusion needed for the next ground disturbance and which documents are still missing.

02

Supplement historical information

Where supporting information is missing, the necessary historical research or aerial photograph analysis is carried out for the specific construction area. Available records, wartime aerial photographs and earlier maps are connected to today's location and the investigation question. Recorded war impacts, changes of use and documented ground changes are located spatially. The findings are analysed for further investigation planning; existing information that is already sufficient may continue to be used.

03

Agree the investigation objective and method

Describe which conclusion is needed for which ground disturbance. Investigation scope, prerequisites and the tasks of those involved are agreed traceably. The appropriate method is defined using the investigation objective, ground disturbance plan, existing findings and local conditions. Access, installed structures and possible interference are considered. The specialist contractor, designers and site management agree preparation, scope of services and the handover timing needed. Necessary official notifications are assigned to the specific activity.

04

Compare design changes and carry out the investigation

Clarify access, construction phases and necessary notifications before the proposed start. Design changes are passed to those affected in good time. Specialist personnel carry out the agreed surveying or technically defined monitoring using the coordinated method. Data and findings are recorded with their locations and actual scope of work. Limitations caused by access or interference remain documented. Unexpected conditions are communicated through the agreed contacts and assessed by specialists before any departure from the planned work.

05

Have recorded data and findings assessed by specialists

The specialist contractor assesses recorded data and findings according to the investigation objective, method and actual conditions. A measurement anomaly is interpreted without identifying it as a particular object solely because it occurs. The stage reached, interference, outstanding areas and additions required are documented in the report with associated plans. The assessment describes the technical conclusions reached and questions needing further clarification.

06

Hand over the results file and clarify the next decision

Reports and site plans show the scope actually addressed. Outstanding areas or those with restricted interpretation remain identifiable for the next works. The report and site plans connect methods, assessed results, volumes addressed and limitations. Designers and site management compare the next groundworks with this status. Additions needed or further official coordination are clarified before the ground disturbance affected. Documentation remains available for later design changes and newly involved contractors.

Planning status and evidence

Which documents your construction project needs

The site plan, preliminary investigation and investigation report must describe the same construction project. If the design or construction area changes, the documents must be supplemented accordingly.

Define the whole construction area

Mark the whole construction area, including site establishment and planned ground disturbance. For routes, bridges or retaining structures, individual points and peripheral areas also belong in the description where actually affected.

Check whether preliminary investigation is current

According to the KMBD, preliminary investigation generally applies to the construction project for which it was issued. If delays occur, an update should be obtained after three years at the latest. A material design change must also be assessed for its implications for investigation scope.

Document areas and depths investigated

Reports, plans and records should identify the investigation method, working boundaries and limitations. A blanket conclusion for the whole property would be insufficient if only specific areas or depths had been investigated.

Evidence for the project

The KMBD forms and information on updating explain how preliminary investigation relates to the planned construction project. If the design revision changes, the areas affected and outstanding questions are identified for further coordination.

Documentation

Assign findings, specialist services and official duties traceably

Findings and their scope

The results report records the task carried out with its spatial scope and limitations identified. The explosive ordnance clearance service's statement remains identifiable as a separate basis. Handover makes clear which requirements have been addressed and which questions remain outstanding for the next groundworks.

Project responsibilities

The agreed private specialist service is connected to the proposed ground disturbance and respective prerequisites. Official duties remain with the responsible bodies. Changes to the construction plan are reviewed to determine whether existing results still apply and what additional coordination is required for the areas affected.

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.

Enquiries from across the state

Project enquiries from towns, cities and districts in Baden-Württemberg

You can enquire about projects in Stuttgart, Mannheim, Karlsruhe, Freiburg, Heidelberg, Heilbronn, Pforzheim, Reutlingen and Ulm, and in the surrounding districts. These include, for example, Rhein-Neckar, Karlsruhe, Ortenau, Böblingen, Esslingen, Rems-Murr, Alb-Donau, Konstanz and Bodenseekreis.

A former garrison site requires different documents from development of a new residential neighbourhood. Describe the location and proposed works and include existing reports. Further investigation needs can be determined from this.

Understand the results

Use technical statements for the next decision

Preliminary investigation remains tied to the construction project

The official validity information relates the assessment to the planned project for which it was issued. When changes or delays occur, the plan revision and updating needs are therefore reviewed. The existing document is passed on with its appendices. Its conclusions are not extended to other ground disturbance solely because the address is the same.

Understand investigation reports and their limitations

Assess terrain and grounds for suspicion separately

Terrain affects access and technical execution. Suspicion of explosive ordnance is assessed using the findings available for that purpose. Both questions are brought together during preparation but retain their respective purposes. The project describes specific groundworks rather than deriving a blanket investigation conclusion from a landscape description.

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
Person wearing an orange high-visibility vest on a marked construction area with small piles of soil
Person wearing an orange high-visibility vest with a MALÅ survey cart on grass
Questions from planning

Questions about terrain, preliminary investigation and explosive ordnance finds

Here you will find answers about the influence of terrain, use of earlier assessments and conduct when something is found.

Does a sloping site establish grounds to suspect explosive ordnance?

No. Terrain affects accessibility, surveying and technical execution. Suspicion of explosive ordnance is based on historical or other specific indications; terrain and contamination must be assessed separately by specialists.

Can an old assessment be adopted?

It should be reviewed for spatial coverage, relation to the project and currency. In your enquiry, identify earlier file references and include existing documents so that duplication and outstanding areas can be recognised.

What should you do in the event of a possible find?

Do not touch or move it, keep your distance and notify the police or local police authority immediately. Do not take suspicious objects to a police station yourself. The police arrange involvement of the KMBD.

Who is responsible for official preliminary explosive ordnance investigation?

The KMBD, responsible statewide, is based at the Stuttgart regional authority. Its current information describes the application, assessment and further duties.

Who arranges searching and recovery?

According to the official information, property owners arrange this work. The KMBD may act within its capacity with costs reimbursed; otherwise, private specialist contractors must be commissioned.

Which details help where access is difficult?

Describe the terrain, available access roads and working areas, and visible obstacles. These details are compared with the investigation objective and prerequisites needed.

What should happen if the construction plan changes?

Provide new areas, relocated ground disturbance and changed depths. Existing assessments and results are checked for coverage and any updating needed.

Which documents determine the work involved, costs and next works?

An assessment and a report on completed work have different tasks. Construction preparation considers the complete documents with their respective scopes and limitations. The work involved and costs depend on area or number of points, depth of ground disturbance, documents available, access and measurement conditions. Preparatory works and results documents needed are described in the scope of services. Scheduling identifies the section needed first and the prerequisites to be met before work.

The KMBD rules of conduct when ammunition is found explain reporting and protection of others. Suspicious objects remain untouched where found; the police or local police authority are notified.

Project enquiry

Your documents for an explosive ordnance investigation in Baden-Württemberg

Send the construction area and depths

Describe the site plan and proposed groundworks clearly.

Add findings and access details

Identify existing reports, terrain and possible obstacles. Also state which earthworks are to begin first and which areas are not yet accessible. Necessary preparatory works and results handover can then be coordinated in good time.

Next step

Discuss your construction project in Baden-Württemberg with us

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.