Project pathway
The quickest route to the right decision.
Explosive ordnance surveys in Eschweiler
Piles, retaining structures and new foundations affect different volumes of ground. For a construction project in Eschweiler, clarify what the state ordnance investigation already covers and whether supplementary safety detection or specialist supervision during construction is required. FONTANA-EOD helps you prepare the commissioned specialist tasks.
Describe planned structures and ground interventions.
Clarify access and investigation conditions.
Clarify the commission and responsibilities before construction.
Assess the construction project
Link structure positions and investigation clearly
Piles and retaining structures need a traceable location and depth reference. For your Eschweiler project, we compare these details with existing results and operating conditions. A supplementary private task is prepared within the permissible framework and with clear limits on what it can establish.
Project references
Selected project examples
KMBS Eschweiler
Service period: 2023-06
Service areas:Ordnance specialist supervision of groundworks
View project details · Ordnance specialist supervision of groundworks
Project site
Connect the site with the specific construction task
Assign Eschweiler documents to the specific commission
Municipal processing and the private commission for the same property are documented traceably. Send official notifications with their maps and current specialist foundation engineering plans. For an operational site, identify the structures and volumes of ground actually affected. Planned ground interventions, existing results and the prerequisites applicable to the task are decisive.
Eschweiler is in the StädteRegion Aachen, within the Cologne administrative district in North Rhine-Westphalia. For a project enquiry in Innenstadt, Aue, Dürwiß, Weisweiler, Hehlrath, Röthgen, Stich, Kinzweiler or Hücheln, provide the precise address and cadastral plot. These details help assign existing maps and information. For surrounding projects, for example in Stolberg, Würselen, Alsdorf, Langerwehe, Inden or Düren, the responsible public order office is determined by the actual project location. Whether an area of suspected ordnance is affected is checked using the available historical and official findings for the identified area.
Local context
Link historical information to today's construction plans
Official processing as the starting point
The town of Eschweiler receives applications for aerial photograph analysis through its public order office and forwards them to the state explosive ordnance disposal service. This application route is part of official processing. When enquiring, tell us which results are already available and which official steps remain outstanding. This helps clarify what supplementary task may be commissioned privately.
The history of Eschweiler describes industrial development through mining and ironworking, and the severe destruction during fighting in 1944. The town was occupied by US troops on 22 November 1944. For a present-day project, available historical images and information on use at the time are related to the specific area required. Later reconstruction, demolition and documented ground changes are compared with today's locations and depths of ground interventions.
Foundations alongside installations that remain in use
If a new foundation is planned alongside installations that remain in use on an operational site, investigation conditions may differ from the later construction conditions. Describe new structures, necessary access routes, areas to keep clear and timing dependencies together.
For former industrial, power station, mining or railway sites, available records of use and subsequent changes are consulted. This also applies to documented fill, relocation of material, demolition and rebuilt residential or operational areas. A use category initially identifies the reason for reviewing documents. The indications actually available are established for the property and forthcoming construction section. New foundations may affect different areas from earlier work; older information therefore remains tied to its original boundaries.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For commissioned activities, clarify the applicable specialist requirements and matters of permits, qualifications and responsibility. The service scope actually planned is decisive. Tasks and interfaces are described for the specific project and checked against the authorisations required.
Link occupational safety to the construction sequence
The risk assessment, work areas and communication arrangements must suit the planned activities. Specialist explosive ordnance work is coordinated with the other construction activities. Site organisation, traffic safety and other technical assessments retain their own responsible parties. Joint coordination assigns the relevant specialist work and responsibilities to the affected construction sections.
Use technical findings correctly
A measurement anomaly first requires specialist assessment; its appearance alone does not identify it as explosive ordnance. If an object is genuinely suspected to be ordnance, the prescribed reporting procedures and the measures set by the responsible authorities apply. Investigation reports specify the work completed and its limitations, so that results are not extended to unexamined areas or later design changes.
The public order office of the town of Eschweiler describes the local application route. The KampfmittelVO NRW governs state duties and the conditions for certain private activities.
The principles of clearance planning connect the investigation task with subsequent work. The specialist geophysical principles help with specialist method selection. The BFR KMR documentation requirements relate results to the areas addressed. Supplementary requirements for permissible private tasks are set out in the official North Rhine-Westphalia guidance. The DGUV FAQs on explosive ordnance clearance explain, among other things, the distinction between specialist planned supervision and mere visual observation.
The BFR KMR describe specialist work on federal properties. Requirements and responsibilities applicable locally are established separately for the specific Eschweiler project.
The permit, qualifications and responsibilities for the specific activity are assessed under the Explosives Act and the First Ordinance to the Explosives Act. The risk assessment under Section 5 of the Occupational Safety and Health Act relates to the planned activities. The DGUV Information 201-027 addresses preventive investigation and clearance of conventional explosive ordnance and defines its scope. The references it explains to DGUV Regel 113-003 concern specific activities involving explosives; they are not applied indiscriminately to every construction investigation.
For private activities in North Rhine-Westphalia, the specific requirements of the exceptions under the KampfmittelVO and the official guidance must be observed. The private contract connects technical suitability with the scope provided for in law. The authority's state of knowledge and the permissions required for the activity are checked before an agreement.
Working together
Distinguish the tasks of client, designers and specialist contractor
Client and operator
The client describes the project and provides the available project records. The operator adds requirements for use, access and timing. A coordinating contact brings the parties together; individual tasks remain assigned to the named parties. Before commissioning, it is clearly recorded what information is missing, who will obtain it and what decision the result is intended to prepare.
Planning and construction management
The specialist designers describe areas, depths, construction methods and changes. Site management coordinates the planned sequence with the construction contractors and agreed specialist works. Results are assigned to the respective intervention. A technical plan change is communicated early enough for its effect on the survey task to be assessed before construction. Organisational construction stage boundaries remain distinguishable from technical survey boundaries.
Specialist company and competent bodies
The private explosive ordnance specialist carries out the agreed investigation and documentation work. Requirements and decisions of public authorities are addressed with the responsible bodies. The documents needed for a particular procedure depend on the location and project. The technical report describes the work carried out, including its documented area, depth and scope. Decisions reserved for public authorities are made by those authorities.
The public order office of the town of Eschweiler receives applications for aerial photograph analysis and involves the explosive ordnance disposal service at the Düsseldorf District Government. This service supports the Cologne administrative district. State surface investigations and the processing of specific indications of ordnance contamination are handled through this responsible procedural route. Permissible private safety detection and supplementary specialist supervision during construction are commissioned subject to their state-law prerequisites. Notification and coordination duties are assigned to the respective activity. Area clearance and ordnance recovery are assigned to the specific finding and the permissible commissioning route for it.
Investigation task
Which specialist task comes next?
Clarify the scope of safety detection
The planned specialist foundation works are compared with the status of state processing and state-law prerequisites. This establishes the permissible private task. The service scope identifies the structures affected, planned ground interventions and expected findings. Authorisations and specialist prerequisites relate to that specific activity.
Assess historical documentsJustify any specialist supervision during construction separately
For possible specialist supervision during construction, assess the specific survey conditions, existing results and further work planned. The decision considers technically suitable prior detection methods and the conditions of the state-law exception. The specialist reason, local coordination and specific supervision scope are defined before commissioning. Such supervision supplements the approach prepared for the site where recognised methods have not enabled a result-oriented investigation because of local conditions.
Compare investigation methodsProject types
Prepare construction of the deep structures
Locate each structure on the current plan
Compile piles, retaining elements and other deep ground interventions in clearly identified plans. The intended depths and orientations must be traceable. A schematic hall outline does not replace this information. The investigation can then be assigned to the structures actually planned. Subsequent relocations remain identifiable as changes and are compared before construction.
Understand downhole surveys
Secure work areas during ongoing operations
On an operational site, routes, storage areas or installations may be available only at certain times. Describe which areas can be entered and used, and when. Necessary operational coordination forms part of scheduling preparation. Operational permissions are compared with specialist assessment of survey conditions and the status of official processing.
Coordinate the sequence and tasksPass on information about installations and survey limits
Existing utilities or old foundations can affect the investigation. Provide available plans and known limitations from earlier surveys. Unknown conditions are identified as outstanding points. A fully completed survey list is meaningful only together with its interpretation. Areas that cannot be interpreted need separate specialist assessment.
Document findings and their limitationsPreparation
Prepare the scope and commission together
Before commissioning, establish the investigation needed, the specific procedural status in North Rhine-Westphalia and the private activity permissible for it. Describe the planned ground intervention and finding required.
Establish what needs to be known before commissioning the work
First establish which decision the commission needs to support. Is the task an initial assessment of existing documents, an investigation of a specific area or examination of an anomaly that has already been assessed? These tasks require different evidence. A general wish for safety does not define an investigation that can be carried out. The enquiry therefore specifies the groundworks, location, depth and available findings. Suitable specialist work and the required reporting are then agreed on that basis.
Define the specialist taskCoordinate preparatory work with the investigation
Required access and survey conditions are clarified before the site visit. This may include keeping areas clear, obtaining service information and coordinating with other trades. The method and site determine which preparations are actually needed. Changes to the surface or additional groundworks are not undertaken unilaterally simply to prepare for a survey. Their sequence is agreed with the specialist designers and responsible parties.
Clarify preparatory work in the programmeAgree a clear scope and schedule
A realistic programme distinguishes technically resolved work from prerequisites that are still outstanding. If only part of a site will be accessible, the commission must take this into account. Handover and assessment of the results also need time in the construction programme. The schedule and effort are agreed once the scope, access and prerequisites are clear. This coordination brings together the specified scope, access, documents, site conditions and the date by which a decision is needed.
Discuss the scope and scheduleTasks at the site
Prepare specialist foundation works within existing operations
01
Piles, retaining structures and intervention depths
Mark planned piles, retaining elements or other deep ground interventions on a traceable plan. Add the relevant elevations and intended construction method. A general reference to a hall extension is not sufficient to understand the volumes of ground actually affected.
02
Utilities, foundations and earlier alterations
Compile available plans of utilities, old foundations and earlier alterations. If fill or soil removal is documented, include those records in preparation too. Unknown conditions remain identified as such; industrial use alone does not evidence particular ordnance contamination.
03
Access during ongoing operations
Describe which areas are available for investigation and which routes or installations remain in use. Clarify who may enter the area and how it can be reached. These organisational questions are distinct from the investigation result. Operational changes may require renewed coordination of the planned work area.
04
Areas where interpretation is not possible
If limitations are known from earlier surveys, provide them with a site plan and explanation. Merely labelling an area investigated is then insufficient. For the following construction section, it must be clear which areas could be assessed by specialists and which questions remain outstanding.
Project documents
Documents that establish the next step
Coordinate operations and site management
Operational managers often know access times and restrictions, while construction plans define the future structures. Bring both sets of information together for the same area. Report changes to storage, traffic or installations before the investigation date. This makes clear whether the agreed prerequisites still hold.
The initial file contains the current site plan, property or cadastral plot details, construction section affected and planned intervention depths. Existing aerial photograph analyses, official information and earlier reports are compiled with all maps and annexes. A dated plan version helps distinguish a later change from construction work already considered. For a route or several spatially separate structures, the respective sections remain clearly identified.
Provide results for the next construction decision
The agreed investigation has a defined specialist scope. Its results show which areas could be interpreted, what anomalies were found and which questions remain outstanding. Further investigations and coordination with the authorities are assigned according to each finding. Site management receives the finding together with the associated areas, depths and conditions.
Result documents include the investigation task described, method used, location of the areas addressed, specialist interpretation and associated plans. Measurements and assessment of findings must be assignable to the identified work area. Where further work is undertaken, its course and result are also documented. The report or clearance record is kept with the annexes it cites in the project file. A subsequent construction decision refers to this documented status.
Method selection
Select methods according to the task and survey conditions
Historical records and aerial photographs
Historical aerial photograph assessment and other old records help place the basis for suspicion in its spatial context. The available images, their evidential value and the limits of the area considered matter. The absence of an identifiable indication must be distinguished from a technically surveyed ground area. The assessment is considered together with the planned intervention and other available findings. It can support the choice of a survey, but is not a measurement of the present-day subsurface or confirmation for all future works.
Understand aerial photograph assessmentMagnetometric survey
For a surface survey the area that can be investigated and the finding needed are described. Magnetic methods detect magnetic anomalies. Whether they can address the specific investigation task depends, among other things, on expected objects, ground conditions, interference and the required investigation area. Fences, utilities or existing structures may affect interpretation. A signal is therefore not identified as ordnance solely from its strength. The method, interpretation and any further clarification are planned as a coherent specialist task.
Understand the scope of magnetometryElectromagnetic methods
Electromagnetic investigations can be suitable for particular metallic targets and site conditions. Their suitability must be explained for the task, rather than inferred simply from the availability of equipment. Interfering installations, accessible areas and the findings required must also be considered. Results are documented with their location and survey conditions. The specialist assessment determines whether a supplementary method is needed; this remains a project-specific decision.
Understand electromagnetic surveyingGround-penetrating radar
Under suitable conditions, ground-penetrating radar can provide information about subsurface structures and reflections. Ground conditions, moisture, installations and the particular survey task affect interpretability. An anomaly is not automatically ordnance, and an area with no apparent anomalies is not general evidence for arbitrary depths. The specialist interpretation and its limits are documented with the instruction. A survey for another purpose is not adopted without checking as ordnance evidence.
GPR and limitationsDeep-ground and downhole surveys
For deeper groundworks, it may be necessary to establish whether a surface investigation can provide the required findings or another approach is needed. Preparation includes the location, depth, borehole layout and existing services. Creating access for the investigation must also be properly planned by specialists. A general depth figure or standard grid cannot replace that work. Findings remain limited to the areas actually investigated and the method used.
Prepare deep interventionsSurvey during construction
If a necessary preliminary investigation cannot be completed, the specialists assess whether a planned approach during construction is suitable. This includes coordinated investigation, interpretation and communication of findings within the intended work sequence. Visual observation of excavated material is not an interchangeable substitute for a necessary survey. Site management needs a clear description of when specialist work will take place, how new findings will be handled and which areas remain unresolved.
Agree the approach during constructionTechnical assessment
Commission safety detection and specialist supervision during construction
Safety detection for specialist foundation engineering
A downhole survey may be privately commissioned within the legally limited scope. The conditions of the North Rhine-Westphalia KampfmittelVO and the specialist relationship to the planned foundation works are decisive. Before agreeing a date, clarify the conditions in which the investigation can take place and what findings can be expected.
For piles and retaining elements, clearly identify the individual positions, numbers and planned final depths. Identify the ground or working level from which depths are measured. If the survey level differs from the later construction level, account for this difference in planning and the report. Inclined structures and laterally shifted starting points also need a clear reference. A change list links the new plans to the version last investigated. This allows a check, before installing a structure, of whether the existing finding covers the planned ground intervention.
Supplementary specialist supervision during construction
The town of Eschweiler stresses that explosive ordnance clearance during construction requires prior coordination and does not replace recognised detection methods. The supervision during construction is therefore not an option merely because of time pressure. Whether it is needed, which area it concerns and how it should be undertaken must be clarified by specialists.
Before planned supervision, describe the work sections, contractors involved and communication between site management and specialist staff. Any advance investigation already possible is considered during this preparation. The town of Eschweiler requires prior coordination with the local public order authority for explosive ordnance clearance during construction; a clearance plan is prepared by the person responsible for construction and provided where needed. Tasks are linked to the specific construction programme so new findings reach those responsible in good time.
Interpret results and clarify outstanding questions
A survey may produce usable results, indications of suspected ordnance or areas that cannot be interpreted. These findings must remain distinguishable. Further investigations and necessary coordination with the authorities are assigned to the respective finding. The scope interpreted and documented forms the basis for the next work step.
If installations or other local conditions restrict measurements, the report records the location affected and the specialist significance of the restriction. Planning can then distinguish an assessed area from an unresolved part of the intended ground intervention. If the next construction work needs further findings, define the objective and scope of the addition before that work. This also applies after piles are relocated, foundations deepened or retaining structures changed. Existing results continue to be used wherever their documented scope remains applicable.
Next steps
From investigation to the next construction section
Initial contact and document review
At first contact, state the project location, planned specialist foundation works and date by which a decision is needed. Official notifications, existing analyses and all annexes are compared with current plans. If reliable historical information is missing, the necessary aerial photograph analysis is initiated through the Eschweiler public order office with the state explosive ordnance disposal service. It is intended to assign available historical indications to the area affected. Existing results and outstanding questions remain distinguishable in the documents.
Define the method and structures
Piles, retaining structures and other deep ground interventions are described by location, orientation and depth. The finding needed and a suitable method are then determined, considering ground conditions, installations, interference and access. Existing state results and the prerequisites for the permissible private activity inform the service description. Method selection is justified by specialists; the specific investigation area follows the planned structures and required working areas.
Investigation and assessment of findings
The agreed survey or permissible supplementary specialist supervision during construction is undertaken in the work conditions described. Collected data and observations are interpreted by specialists. Usable results, anomalous findings and areas that cannot be interpreted are recorded separately with their locations. Additional investigations and possible supervision during construction are clarified using these findings and the respective prerequisites. Responsible authorities are involved through the applicable reporting and coordination routes.
Report for the next construction section
The report identifies the areas actually addressed, depths, methods, results and limitations. Associated plans and evidence are handed over in full. Before the next step, site management compares the planned ground intervention with this documented scope. Further specialist tasks are identified and necessary official decisions are clarified through the responsible authorities. If plans change, the comparison is repeated for the changed construction work; an applicable existing investigation remains usable as a basis.
Documentation
What site management needs to know from the report
Findings and their scope
Site management should be able to identify which planned structures the investigation covers and the conditions on which it was based. Also pass on the investigation limitations. If piles are relocated or additional ground interventions planned, check this change against the documented scope before construction.
Project responsibilities
The state-law exception describes specific private activities with defined prerequisites. Statutory tasks, required notifications and official decisions remain assigned to the competent authorities. The commission and report document the specialist service performed and its applicable conditions. Those responsible for construction can identify the specialist finding available and any additional official steps for the project.
Working approach
How FONTANA-EOD works
Document the agreed specialist service clearly
We assess the planned groundworks against the available documents and their design revision. Before attending site, we agree with you what needs to be investigated, which areas are accessible and what findings are required. If the design or site conditions change, we check whether the agreed scope remains appropriate. The report states what was actually investigated and the limits of the findings. This allows designers and site management to see which findings they can use and where questions remain.
Discuss the investigation taskThe task before the equipment
We first establish the investigation objective: which question must it answer? We then select a technically suitable method. The availability of a particular device or experience on a similar neighbouring site is not enough to justify the choice of method on its own.
Keep limitations visible
Inaccessible areas and limited conclusions are identified. They do not disappear into a total area figure. Designers and site management can then decide specifically which areas still need attention and when a suitable survey becomes possible.
Clarify changes before intervening in the ground
A new location, additional depth or different construction method is compared with previous results. A familiar project name does not replace this comparison. Feedback is provided before the affected work so that an outstanding question can be included in the sequence.
Hand over the report and plan together
The technical conclusion remains connected to its location references and appendices. A brief summary helps orientation but does not replace the documented survey scope. This basis is retained even if site management or contractors change.
Understand the results
Use technical statements for the next decision
Distinguish point-specific findings from area-wide findings
An investigation for specific structures refers to its documented scope. It does not automatically establish findings for further foundations or the whole operational site. The report must identify location, depth reference and limitations. The next construction phase compares its own ground interventions with these details.
Understand investigation reports and their limitationsDescribe the commissioned service clearly
Record which investigation need will be addressed privately and which state steps exist alongside it. The necessary documents and work prerequisites form part of the agreement. A clear commission makes subsequent assessment of the results easier. Outstanding official decisions explicitly remain outside a private scheduling commitment.
Understand the service scopeConstruction sequence
Coordinate investigation and construction sections
Before setting the construction sequence
Compare the locations of deep structures with existing results. Keep unresolved areas and necessary further coordination visible in scheduling. Operational permission to use the working area does not answer these specialist questions. Only a complete task description allows the private service scope to be defined meaningfully.
When plans change during construction preparation
If a pile moves or the retaining structure changes, pass on the new plan version before construction. Check the earlier investigation report against its spatial boundaries. Changed access and new installations may also matter. Where necessary, supplement the original commission traceably rather than extending its findings implicitly.
Design and findings
Documents for the next construction decision
Historical evidence and the current design
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessmentSpecialist reports for site management
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports
Further technical topics
Further technical information for your project
Determine the specialist service from the planned groundworks
Historical assessment, technical investigation and subsequent work answer different questions. In your enquiry, identify the planned groundworks and the information needed to prepare them.
Compare servicesCoordinate the project sequence with everyone involved
Preparation connects the commission, site work and handover of findings. Changes to the project can then be incorporated into technical coordination in good time.
Process and documentationQuestions from planning
Questions about specialist foundation engineering and supervision during construction in Eschweiler
When and where do I apply for aerial photograph analysis?
The town identifies its public order office, which forwards the application to the state explosive ordnance disposal service. Use the current municipal forms and guidance. The procedural status and documents received help a subsequent specialist enquiry. Submit the application before the planned ground intervention, preferably during permitting or planning. Following the analysis, the investigations needed and permissible commission are defined. Results are assessed by specialists, documented and compared with the plans before the next construction section.
How do state investigation and private safety detection complement each other?
State area investigations and the processing of specific indications of ordnance contamination are handled through the responsible authorities and explosive ordnance disposal service. Private safety detection concerns the specialist foundation engineering commission permitted by law and its prerequisites. The commission defines the structures affected, depths and authorisations and conditions required under Section 3 of the North Rhine-Westphalia KampfmittelVO. Outstanding state tasks remain identifiable in the procedural status.
Is having someone watch the excavated soil sufficient?
Purely visual observation is not professionally planned explosive ordnance clearance during construction. The DGUV explicitly distinguishes the two. Where such a measure is necessary and permissible, it needs specialist planning and agreed protective measures for the specific work situation. A suitable detection method is selected according to ground conditions, metallic installations, interference, targets and depth required. Areas with restricted interpretability are documented with their limits.
Why are old as-built plans needed for a conversion?
They may help locate foundations, utilities and earlier changes. This information supports assessment of investigation conditions. It does not replace ordnance evidence; missing or unclear information should be identified as outstanding points. State results, a current plan of the deep structures and information on existing installations are needed. Known survey limits and temporarily closed areas should be explicitly identified.
What happens if suspected ordnance is found?
Stop work in the affected area immediately, keep your distance and leave the object untouched. Notify the police on 110. The responsible authorities determine the next steps; do not attempt to investigate or recover the object yourself. Warn others without putting yourself at risk and follow the responsible authorities' instructions.
What changes if a planned pile is relocated?
The new position is compared with the documented investigation scope. Location, depth and orientation may matter for the finding. An earlier report is not automatically transferred to the changed construction work.
Can ongoing operations affect the investigation scope?
Ongoing operations may affect access, available work areas and investigation conditions. These circumstances are described during preparation. The investigation objective required by specialists remains clear. Unresolved areas and further access needed are recorded separately and planned for the forthcoming construction work.
Which factors determine effort and costs?
Effort and costs depend on the location and number of structures, investigation depth, suitable method, access, interference, necessary preparation and result documents. For a quotation, specify the tasks that may be privately commissioned and the status of official processing. If plans change or investigation results remain unresolved, additional needs are coordinated separately.
Project enquiry
Plan specialist foundation works in Eschweiler
Send structure plans and earlier reports
Send current pile and retaining structure plans with depths. Include official notifications, earlier investigations and available as-built plans in full. Add the project address, cadastral plot, construction area, route or borehole plans, construction phase and schedule. Existing aerial photograph analyses, conditions and complete earlier reports make the previous state of knowledge traceable. Also identify the sector and use of the operational area affected.
Describe operational conditions
Identify accessible working areas, routes still needed and time restrictions. Mark changed structure positions and investigation areas not yet resolved. State which earthworks are due to start first and what specialist finding is needed by then. Planned preparation and handover of results are coordinated accordingly. Further project locations: Düren.
Clearance plan and documentation
Clearance plan and documentationProject sequence and responsibilities
Project sequence and responsibilities
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.
