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Does your construction project in Trier require archaeological investigations or heritage-law approvals alongside the explosive ordnance investigation? Coordinate tasks and work areas before ground interventions. FONTANA-EOD supports clients, planning consultancies and site management, performs the agreed explosive ordnance investigation and documents its results. The tasks of other specialists and authorities remain separate.
Plan explosive ordnance investigation and archaeology separately.
Agree access, groundworks and sequence.
Assign reports and approvals to the work.
For a construction project in Trier, explosive ordnance investigation and heritage-law tasks may affect the same area. We coordinate the agreed investigation scope with the proposed groundworks. The bodies involved retain their respective tasks; the knowledge, approvals and area handovers required are assigned traceably before the next step.
Service period: 2026-03
Service areas:Surface surveys: GPR, TDEM and magnetometryMethod used in this project: Ground-penetrating radarSetting out and marking survey areasDocumentation and interpretation of survey data
Wallenbachstraße Trier
Fußgängerzone Dudweiler
Wellritzstraße Wiesbaden
Panzweiler
Singhofen
Mainz Hbf
Senheim
Kurfürst-Schönborn-Straße 124
Wiltingen
Oberhausen
Bensheim
Darmstadt
Freinsheim
Wincheringen
Bahnhof Trier-Ehrang
Saarbrücken
Service period: 2024-06
Service areas:Surface surveys: GPR, TDEM and magnetometryMethod used in this project: Ground-penetrating radar
The services and quantities stated relate to several project locations and are not itemised separately for each site.
Service period: 2025-09
Service areas:Ordnance specialist supervision of groundworks
View project details · Ordnance specialist supervision of groundworks

The city of Trier describes designated archaeological protection areas and the approval procedure for projects that may endanger hidden cultural monuments. The requirements applicable to your property are clarified according to its location and planned interventions. This coordination is scheduled alongside the explosive ordnance question. The respective specialist results and official decisions retain their own purpose. Trier is an independent city in Rhineland-Palatinate, Germany. Enquiries can identify Altstadt and Innenstadt, Nord and Nordallee, West and Euren, Süd and Heiligkreuz, Kürenz, Ehrang and Quint, Pfalzel or Zewen with the specific project address. For enquiries from Schweich, Konz, Wittlich, the Trier-Saarburg district or the Moselle-Eifel-Hunsrück area, the actual municipality and federal state are stated. The locally competent body is clarified using this project location.
The overview of the SGD Nord provides further local information for the regional context of your construction project.
The city of Trier provides information about designated archaeological protection areas. According to its explanation, projects there require approval from the lower heritage-protection authority if they may endanger hidden cultural monuments. The city names its Office for Municipal Culture and Heritage Protection for heritage-protection questions. Whether and which requirements affect a particular project must be clarified according to its location and proposed work.
The city of Trier commemorates the severe air raids of December 1944 and destruction in the city. For a current construction project, historical indications are related to its specific location and the documents available. An area's archaeological significance and possible wartime impacts are treated as different questions. Further investigations required for the construction area depend on existing knowledge and planned groundworks.
For Moselle bridges, bank protection, ramps and access routes, and rail and route corridors, the ground volume actually proposed is shown. This may include deep utilities, shoring or sheet-piling tasks, excavations and foundations. Known previous military, commercial or infrastructure uses, reconstruction, fill and subsequent utility or sewer works are considered as sources dependent on available records. A proposed change of use receives its own reference to current intervention planning.
The explosive ordnance investigation and heritage-law decision each answer their own specialist question. For explosive ordnance, existing knowledge and the investigation actually performed with its documented limits matter. The approvals required under heritage law are clarified with the responsible bodies. Identify the investigations proposed and their prerequisites for both tasks. On the plan, replace the blanket term ground clearance with the specific specialist purpose and processing status achieved.
For the commissioned activities, the relevant technical requirements and questions of permits, competence certification and responsibility are clarified. The actual planned service scope is decisive. A general company designation does not replace checking that the tasks and interfaces are described appropriately for the specific project.
The risk assessment, working areas and communication must fit the planned activities. Explosive ordnance specialist works are coordinated with the other construction works. Operational organisation, traffic safety and other technical checks retain their own responsible parties. Joint coordination brings the information together and assigns tasks and decisions to the respective competent participants.
A measurement anomaly first requires specialist assessment; its appearance alone does not identify it as explosive ordnance. If an object is genuinely suspected to be ordnance, the prescribed reporting procedures and the measures set by the responsible authorities apply. Investigation reports specify the work completed and its limitations, so that results are not extended to unexamined areas or later design changes.
Procedure at the site: City of Trier: cultural monuments and approval of construction works · City of Trier: archaeological protection area.
Planning and documentation: BFR KMR: clearance planning – introduction and principles · BFR KMR: geophysics · BFR KMR: documentation · DGUV: explosive ordnance clearance FAQ · ADD Rhineland-Palatinate: tasks of the explosive ordnance clearance service · ADD Rhineland-Palatinate: explosive ordnance clearance service information sheet, June 2025
The BFR KMR are used as technical guidance; locally applicable requirements and responsibilities must be clarified separately.
The permit, qualifications and responsibilities for the specific activity are assessed under the Explosives Act and the First Ordinance to the Explosives Act. The risk assessment under Section 5 of the Occupational Safety and Health Act relates to the planned activities. The DGUV Information 201-027 addresses preventive investigation and clearance of conventional explosive ordnance and defines its scope. The references it explains to DGUV Regel 113-003 concern specific activities involving explosives; they are not applied indiscriminately to every construction investigation.
The client describes the project and provides the available project documents. The operator adds requirements relating to use, access and scheduling. The participants agree their respective tasks and decision-making responsibilities. A coordinating contact person brings the project information together. Before an appointment, it is recorded clearly which information is missing, who will obtain it and which decision the result is intended to support.
The specialist designers describe areas, depths, construction methods and changes. Site management coordinates the planned sequence with the construction contractors and agreed specialist works. Results are assigned to the respective intervention. A technical plan change is communicated early enough for its effect on the survey task to be assessed before construction. Organisational construction stage boundaries remain distinguishable from technical survey boundaries.
The private explosive ordnance specialist company addresses the agreed investigation and documentation scope. Official requirements and decisions are clarified with the respective competent authorities. Documents required for a specific procedure depend on the site and project. The technical report describes the specialist service carried out with its spatial scope and limits of findings. Its applicability to further groundworks is checked against the specific intervention. Official decisions are made by the competent authorities.
The ADD describes the Rhineland-Palatinate explosive ordnance clearance service as supporting the locally responsible hazard-prevention authorities with specific explosive ordnance hazards. The responsible local regulatory authorities, or the police where delay would create danger, initiate official steps. General preventive investigations before construction, historical research and aerial photograph analyses are commissioned as private specialist services. Necessary official decisions on recovery, render-safe procedures or destruction remain with the competent authorities.
The method follows the explosive ordnance question and actual conditions of the construction area. Groundworks and access required are included in coordination. Other specialist supervision does not remove the need for this assessment. The findings required and possible limits are described traceably for the agreed investigation.
Assess historical documentsIf an outstanding question requires an additional intervention, its scope is clarified before execution. The specialists affected and applicable requirements are considered. An approach initially agreed does not automatically cover a later change. The new task is added to planning with its location, prerequisites and expected result.
Compare investigation methods
Preparatory work may also affect the ground. Therefore describe its location and scope together with the subsequent construction work. The responsible parties can use this to check the prerequisites required for each step. Coordination concerning only the finished excavation may leave the investigation process unconsidered.
Alongside the future structural elements, show trial trenches, drilling positions, work areas and access required, as far as already planned. Each depth receives a traceable reference to the ground surface. Using this shared version, the investigations or approvals required are clarified before the work affected. Changes to a preparatory intervention are communicated just as changes to the later excavation are. The participants thus work with the same spatial task description.
Specialist services and investigation tasks
Record which document is required for which activity and who supplies it. General approval of the project does not automatically answer every specialist question. The project overview connects conditions and tasks with specific work areas. It then becomes clear which prerequisites are already met and which still require clarification.
Assign each existing communication its issuer, date, associated plan and work step affected. Record whether conditions are already met or specific clarification remains outstanding. If changed construction planning requires a new enquiry, it is submitted to the responsible body. A response remains available with its appendices. Site management can identify the coordination status actually achieved and the tasks still outstanding.
Coordinate the sequence and tasks
The sequence follows the prerequisites of the activities proposed. Agree which information must be available before the next intervention. A shared schedule helps but does not replace specialist assessment. If a method or area changes, the dependent handover is reconsidered too.
For scheduling, identify the work areas required and expected document flow between specialists. If two investigations share access or a work area, its use is specifically coordinated. Where a change occurs, the follow-up steps affected remain traceable. The responsible parties decide whether a later construction section can begin using the knowledge and conditions actually available. Outstanding specialist work receives a clear task and a responsible contact.
Coordinate the sequence and tasksIn your enquiry, identify the explosive ordnance findings required and archaeological work proposed in parallel. Each area, intervention depth and existing knowledge basis is assigned with the responsible parties. A commission may initially assess existing documents or already concern a field investigation or further clarification of an assessed finding. Specialist services, results required and workflow dependencies are specifically described for commissioning. The heritage-law decision retains its own responsibility and approval procedure.
Define the specialist taskCoordinate access and available work areas with specialists working at the same time. Existing open investigation points, utility information or remaining structures may affect measurement conditions. Preparatory work required is determined for the selected method and actual location. New ground interventions or surface changes are prepared with specialist planning and those responsible. Creating investigation access thus also receives an agreed sequence and the prerequisites required.
Clarify preparatory work in the programmeThe scope of private specialist work is agreed using the project documents, actual execution conditions and permissible activity. Necessary preparatory works, investigation, evaluation and documentation are described transparently. Costs and dates are related to these prerequisites and the required coordination. Changes to the construction plans are checked against the agreed contract before work is extended.
Discuss the scope and scheduleShow planned interventions on a site plan. Check with the responsible bodies whether heritage-law requirements apply at this location. A general description such as city centre is insufficient either to determine a protection-area boundary or to define the explosive ordnance investigation.
Connect the property, land parcel and construction section with a clearly identified plan version. Protection-area boundaries used and proposed investigation areas remain distinguishable on the drawing. If a boundary or structural element's location is unclear, clarify the information with the responsible body. Specialist planning then shows the affected ground volumes and transitions between areas. Access outside the excavation itself is also considered where groundworks are proposed.
A proposed investigation may itself require ground interventions. Therefore describe not only the later excavation but also planned preparatory work. Clarify specialist prerequisites and, where applicable, official prerequisites for this work in advance too.
If several specialists need the same area, their proposed work areas and handovers must fit together. A fixed sequence cannot be determined without project information. Instead, record which knowledge or approval is needed before each step and who provides it.
An archaeological statement, an official approval and a survey report contain different findings. Consider their respective conditions in further planning. None of these documents gives blanket answers to every subsurface question. If the excavation changes, each specialist question affected must be compared again against the new intervention.
For each document, the project file brings together its specialist purpose, spatial reference and relevant appendices. A file reference or report title helps with enquiries but does not replace the associated content. Where several plan options exist, the version to which the findings refer is identified. Removed and newly added interventions are listed separately. The respective responsible parties can then check which conditions apply to the execution now proposed.
Results of the explosive ordnance investigation are handed over with the investigation objective, area addressed and limitations. Archaeological documents and official decisions remain identifiable as separate documents. Site management can then understand the prerequisites for the next step. Shared filing does not extend an individual report's findings to every subsurface question.
The report and plan appendices for the explosive ordnance specialist service are passed on as a consistent set. Areas addressed, investigation depths, relevant measurement conditions and limitations assessed by specialists remain identifiable. For work by section, usable findings are assigned to each section. Later supplements are connected with the original question. After explosive ordnance clearance work, the clearance record, stating scope, results and remaining limits, is assigned to the explosive ordnance documents for the section actually addressed and its plan appendices. The document set needed for the next activity is supplied to agreed recipients before it begins; outstanding points remain explicitly identified.
If different site management or a new specialist consultancy takes over, outstanding approvals and unresolved work areas belong in the handover. Identify the body handling clarification. Communications already issued are passed on with their appendices. The distinction between existing knowledge and a decision still pending is thus not lost as the project proceeds.
When participants change, previous contacts in the disciplines involved and responses still outstanding are also passed on. Identify the areas affected by an outstanding prerequisite and the construction phase dependent on it. Incoming planners receive the original documents used together with the current coordination status. They can then pursue specific enquiries rather than infer completion of individual tasks from a general project status.
Compile the intervention plan, existing specialist reports and official communications. Identify other participants and planned preparatory work. Joint coordination can then become specific. For each activity, it remains clear who carries it out, which result is required and which prerequisites need clarification first.
Compare the results received with the requirements of the following work step. Any conditions from other disciplines continue to be considered. A completed explosive ordnance investigation answers its agreed question. For further planning, it must also be clear whether the other knowledge and approvals required for this intervention are available.
Historical aerial photographs and old records are analysed for the wartime question concerning the specific ground volume required. Available photographic periods, spatial coverage and identifiable limits determine their findings. Archaeological inventory information may supplement the documents but answers a different specialist question. Historical analysis is combined with current intervention planning and existing investigation results. It supports planning of further specialist work; the actual measurement status of the present ground and its spatial limits are documented separately.
Understand aerial photograph assessmentWhether magnetometry can answer the explosive ordnance question required is also assessed under the conditions of shared investigation areas. Magnetic anomalies may be influenced by existing structures, utilities and other interference. Expected objects, ground conditions and the required ground volume therefore help determine selection and interpretation. Specialist assessment classifies the signal and identifies further clarification required; signal strength alone does not identify explosive ordnance. Magnetometry measures the magnetic field passively. The magnetic effect of the target object is decisive; electrical conductivity alone does not establish its detectability by this method.
Understand the scope of magnetometryFor an electromagnetic investigation, suitability for the metallic target objects and proposed work area is justified. Actual accessibility and interfering installations are compared with the findings required. Recorded data receive positional references and information about investigation conditions so that other specialists can identify the areas addressed. A supplementary method follows the outstanding explosive ordnance question and measurement conditions, not merely the equipment available. In transient electromagnetic methods, TDEM, the time-dependent electromagnetic response of conductive objects is evaluated. The method is selected according to the investigation objective and actual measurement conditions.
Understand electromagnetic surveyingGround-penetrating radar can provide interpretable subsurface structures and reflections. Where specialist tasks overlap, the report must identify the investigation purpose and ground volume considered. Ground conditions, moisture and existing structures affect the findings possible. Before an investigation obtained for archaeological or construction purposes is used for the explosive ordnance question, specialists assess its suitability. Anomalies require interpretation; unremarkable data do not provide general evidence for arbitrary depths or additional work areas.
GPR and limitationsFor deep excavations or foundations, the findings obtainable from the surface and whether a deep-ground or borehole survey is needed are assessed. Proposed drilling positions, depths and existing utilities are compared with the other investigation areas. Access required and its preparation form part of specialist planning and are coordinated with other participants. The actual layout, method used and areas interpreted remain decisive, rather than a blanket depth or grid figure.
Prepare deep interventionsFor groundworks staggered over time, an explosive ordnance investigation during construction may need consideration if the advance investigation required cannot be completed. Its suitability and specialist work are determined before the relevant work step. The workflow distinguishes investigation, interpretation and communication of findings from archaeological tasks proposed in parallel. Merely observing excavation does not replace the survey required. For each stage, site management needs the specialist status achieved, outstanding areas and prerequisites of subsequent work.
Agree the approach during constructionThe historical aerial photograph analysis serves the specific explosive ordnance question and must be read alongside other available knowledge. Information about building history or cultural monuments may serve other purposes. It replaces neither the required specialist analysis nor its traceable limits of findings for the planned construction area. Where knowledge gaps remain, a suitable specialist company carries out historical research and the aerial photograph analysis required. Results receive a reference to present areas and planned interventions; limitations of the imagery are documented.
For a survey, existing installations, metal objects and accessibility may affect interpretation. An anomalous measurement signal cannot be identified as a particular object merely because it is in Trier. Describe the investigation objective and chosen method in the commission. Also record the limits of the investigation. The investigation objective, intervention depth and target objects are compared with ground structure, existing utilities and interfering objects. Magnetometry records magnetic anomalies; active electromagnetic methods and ground-penetrating radar each have different operating conditions. For ground-penetrating radar, propagation conditions in the ground must be considered in particular. For deeper interventions, the deep-ground or borehole survey required is planned by specialists. Borehole clearance certification or the associated technical evidence remains assigned to the ground volume actually investigated and its documented scope.
An explosive ordnance survey during construction has its own specialist investigation scope. Neither archaeological supervision nor merely observing excavated material replaces this detection. DGUV explicitly distinguishes mere observation. Which approach is suitable depends on the task and respective investigation conditions.
Compile the location, interventions and preparatory work traceably. At first contact, provide the project location, construction task and clarification sought. Existing plans, reports and official communications are checked for currency, spatial reference, completeness and gaps.
Address the explosive ordnance question and, where applicable, heritage protection separately. Where historical questions remain open, a suitable specialist company carries out the research and aerial photograph analysis required. The investigation method is chosen according to the knowledge sought, intervention depth, ground structure, utilities, interfering objects and actual measurement conditions.
Assign the knowledge, approvals and area handovers required. The specialist commission, work areas, access, preparatory work and necessary protective measures are clarified with the respective responsible parties before the affected ground interventions.
The agreed survey or proper specialist investigation accompanying construction is carried out within the permissible specialist commission on the coordinated areas and points. Survey data and observations receive a traceable spatial and elevation reference. Uninvestigated areas, restricted access and relevant interference are recorded.
The collected data and findings are evaluated against the investigation objective. The technical assessment considers interference, the areas reached and remaining limits of the conclusions. It establishes which further investigation or work is needed for the planned groundworks.
The report and plan attachments document the specialist works performed and their assessment. Worked areas, investigation depths, the relevant ground surface and limitations remain assigned. Reused older results and newly investigated areas are recorded distinctly. The agreed recipients receive the related documents together.
Pass on reports and approvals with the respective scope of their findings. The responsible parties use the associated documents to decide on additions or adjustments required for the next specific ground intervention.
The explosive ordnance investigation report describes the area actually addressed, investigation objective, method and findings achieved. Documents from other disciplines retain their respective scope of findings. Site management and planners must be able to identify which documents exist for the next work step and which prerequisites are still missing.
FONTANA-EOD handles the agreed private investigation and documentation commission. Archaeological specialist tasks and official decisions are handled by the responsible parties. In Rhineland-Palatinate, ADD distinguishes precautionary private investigations from official prevention of specific hazards. The BFR KMR apply directly to construction and operation of federal properties; outside that scope, their specialist planning principles provide guidance alongside local requirements.
FONTANA-EOD documents the commissioned explosive ordnance investigation with the document version used and areas actually addressed. For joint construction planning, its results remain distinguishable from heritage-law approvals and other specialist evidence. Changes to planning, access or work sequence are compared with the agreed investigation scope. The report identifies the findings possible and limits remaining so that participants can base their next tasks on traceable information.
Discuss the investigation taskMethod selection follows the outstanding explosive ordnance question in the planned work area. Investigations taking place in parallel are considered with their prerequisites. Neither equipment already in use there nor the method on an adjoining construction site automatically determines the appropriate approach for this task.
An area may be accessible to one specialist yet still present limitations for the explosive ordnance investigation required. Such areas and limits of findings are identified in the results. Further planning assigns the investigation required, its access and timing prerequisite to the construction section affected.
If an excavation moves or greater depth is required, previous explosive ordnance results are checked before the affected intervention. The agreed work sequence and specialist coordination needed in parallel are also related to the change. Current planning identifies the additional ground volume and outstanding tasks.
The explosive ordnance investigation report and plan appendices remain linked to the processing status achieved. Other specialist reports and approvals are assigned with their respective purpose. This complete handover also enables new site management or another contractor to understand the limits of findings and outstanding tasks within the shared workflow.
Identify the next activity for which a work area is handed over. This includes reports available and conditions still applicable. The blanket designation cleared area may conceal different circumstances. Specific allocation to the intervention, specialist task and documentation helps participants interpret the status achieved correctly.
Understand investigation reports and their limitationsA shared site plan can compare investigation areas, protection-area boundaries and planned interventions. Use clear designations for each item of information. The drawing replaces neither a specialist report nor an approval. Its purpose is to make spatial relationships visible to participants and prepare targeted enquiries.
Understand the service scope
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessment
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports


Historical assessment, technical investigation and further work answer different questions. The enquiry describes the outstanding task, affected areas and depths, and the results required. The permissible scope of services is agreed in line with the actual conditions and responsibilities.
Compare services
Preparation connects the commission, site work and handover of findings. Changes to the project can then be incorporated into technical coordination in good time.
Process and documentationSuch a blanket statement is incorrect. The city provides information on the designated areas. The project's location and planned interventions are decisive. Specific heritage-law requirements must be clarified with the responsible body.
No, the two tasks concern different questions. Approval for dealing with cultural monuments is not evidence that an explosive ordnance investigation has been performed. Conversely, its result does not replace any heritage-law approval required.
The sequence depends on the specific project. Existing knowledge, proposed investigation methods, interventions required and official requirements must be considered. Participants must coordinate the prerequisites for each planned work step.
A shared site plan can help coordination if tasks, areas and processing status remain clearly distinguishable. The respective reports and decisions retain their own scope of findings. A shared drawing is not comprehensive clearance of the property.
Stop the affected work and keep your distance. Do not touch, move or further uncover the object. Notify the police on 110 and follow their instructions. Do not attempt investigation or recovery yourself; ongoing supervision by other specialists does not replace this notification either.
Yes. Their location and scope should be shown alongside the later construction work so that specialist prerequisites and, where applicable, official prerequisites required can be clarified.
It follows from the agreed task, investigations actually performed and their documented limits. Other specialist reports do not automatically extend that scope.
Work involved in the explosive ordnance specialist service depends on usable preliminary documents, preparatory work and access required, area size or number and depth of investigation points, suitable method, measurement conditions, interpretation and documentation. Identify confirmed requirements and coordination still outstanding with other participants. Work in other disciplines remains separately identifiable with its respective tasks. The precautionary specialist service required is offered with its specific permissible scope.
Identify the bodies involved and communications and requirements already available. Send the current intervention plan, existing explosive ordnance reports and official project communications. FONTANA-EOD coordinates the explosive ordnance investigation required, work areas and handovers with you. Provide the project address, land parcels, current plan version and processing status of the different specialist tasks. Existing decisions and specialist reports are supplied with all relevant appendices. State which documents are still missing and who is to provide them. Outstanding approvals remain identifiable with the area affected and proposed work step. Identify the next project decision sought together with the result needed for it.
Also show preparatory interventions and the work areas required for each. Add location, depths and elevation reference of the excavation, utilities, drilling and other groundworks. State planned construction periods, known existing installations and possible access restrictions. For bridge, riverbank or hydraulic engineering tasks, explicitly describe the ground volume to be investigated and the conditions governing its accessibility. Investigations and protective measures required are agreed before preparatory or subsequent ground interventions. If plans change, we receive the new version with the specific areas affected.
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.