Project pathway
The quickest route to the right decision.
Prepare an explosive ordnance survey in Oberhausen
Preparation for an ordnance investigation in Oberhausen includes area, access and known utility information. FONTANA-EOD helps compare these details with the planned groundworks. This clarifies what investigation is to be commissioned and what preparation remains outstanding.
Clarify access routes and rights of entry.
Provide plans and identify unknown routes.
Mark groundworks and investigation areas.
Assess the construction project
Clarify access and utility information before the date
An accessible area is not yet a fully prepared investigation area. For your Oberhausen project, we consider entry, known utilities and planned ground interventions together. Missing information and unavailable areas remain explicitly identifiable before a specific specialist service is agreed. Coordinate the necessary applications and investigations before the first affected ground intervention.
Project site
Connect the site with the specific construction task
Assign Oberhausen documents to their respective purposes
The town of Oberhausen identifies its public order department as the receiving contact and the Düsseldorf District Government for aerial photograph analysis. Its documents address utility information and entry, among other matters. These prerequisites are linked to the actual commission for your project. They replace neither specialist investigation nor its documented result. Oberhausen is an independent town in North Rhine-Westphalia within the Düsseldorf administrative district.
For projects in Alt-Oberhausen and Innenstadt, Osterfeld, Sterkrade, Buschhausen, Lirich, Schmachtendorf, Holten or Neue Mitte, the project address and site plan are needed. Identify earlier and current use, planned groundworks and operational, traffic and utility areas affected. For development or conversion projects, assign available areas and outstanding access questions to the current construction section.
FONTANA-EOD has a presence in Wesseling. For projects in Duisburg, Mülheim an der Ruhr, Essen, Bottrop, Gladbeck or Dinslaken, state the respective municipality and specific project location. These neighbouring towns have their own municipal responsibilities. For further projects in the western Ruhr area and Lower Rhine, the procedure and specialist task are clarified according to the actual site and planned groundworks.
Local context
Local application and historical information in Oberhausen
Application documents and former uses
The town of Oberhausen identifies its public order department as the receiving contact for aerial photograph analysis applications; according to its guidance, the Düsseldorf District Government undertakes the analysis. The application requires a description of construction activity and a clearly identifiable investigation area. According to the town, an intention to buy alone is insufficient. The municipal yearbook documents increasing air raids from 1941 to 1944 and the protection of archive documents at that time. For today's projects, preserved use, construction and damage records are assigned to the specific ground intervention. Former mining, steelworks, chemical, operational or storage sites and railway or shunting areas may later have been filled, altered or converted to other uses. Town-centre densification, housing and mixed development, and today's retail, service or leisure use are therefore compared with existing records and current plans.
Assign entry permission and utility information correctly
The same page provides a declaration concerning the absence of utilities and permission to enter, among other documents. Clarify what utility information exists and who permits access to the working area. The entry permission there concerns the explosive ordnance disposal service or its commissioned contractor; it is not a general commission to FONTANA-EOD. The form asks about unrestricted access and the need to arrange an appointment. Assign these details to the property and working area actually needed. Utility documents are passed on with their origin and revision status; differences and unresolved routes are agreed with specialists before affected activities. Any ground investigation needed for this has its own clarified work sequence.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
For commissioned activities, the applicable specialist requirements and questions of permits, qualifications and responsibilities are clarified. The scope of services actually proposed is decisive. A general company description does not replace assessment of whether the respective tasks and interfaces are appropriately described for the specific project. Company authorisation, competence and appointment of responsible persons are assigned to activities requiring a permit. The prerequisites for the narrowly limited private North Rhine-Westphalia exceptions are checked before a corresponding agreement.
Link occupational safety to the construction sequence
Risk assessment, work areas and communication must fit the proposed activities. Specialist ordnance work is coordinated with the other construction work. Site organisation, traffic safety and further technical specialist assessments retain their own responsible parties. Joint coordination brings information together without equating different tasks. Employers assess the risks of their respective activities and agree the protective measures required at interfaces. If conditions change, the assessment is reviewed for the affected work. Information routes and contacts must be clear to those involved on site.
Use technical findings correctly
A measurement anomaly first requires specialist assessment; it is not identified as ordnance solely because of how it is displayed. For an actually suspicious object, the prescribed reporting routes and measures of the competent authorities apply. Investigation reports identify the scope investigated and its limitations so that results are not transferred to unassessed areas or later plan changes. If a suspicious object is found, work in the affected area stops and distance is maintained. The object remains untouched. Notify the local public order authority or police immediately; in an acute situation, call the police on 110. The competent authorities undertake further securing and specialist handling.
The town of Oberhausen explains the application and local procedure. Its declaration concerning the absence of utilities is completed using the documented status of utility information. The permission to enter identifies access for the explosive ordnance disposal service or its commissioned contractor; a commission to a private specialist contractor is clarified separately.
The investigation objective, area and method are compared with the principles of clearance planning and the specialist geophysical principles of the BFR KMR. Handover of results is prepared with reference to the BFR KMR documentation guidance. For task-specific occupational safety, the DGUV guidance on explosive ordnance clearance is consulted. Permissible private activities in North Rhine-Westphalia are related to the requirements of the KampfmittelVO NRW and official North Rhine-Westphalia guidance.
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.
For private activities, the requirements of the exceptions under the KampfmittelVO and the official guidance are related to the construction task. The narrowly defined exceptions concern downhole detection in specialist foundation engineering and explosive ordnance clearance during construction under the respective applicable conditions. The site conditions assessed by the state and authorisations required must be in place. Specific indications of ordnance contamination are handled through the responsible state procedure. Before opening up a location indicated as suspicious, the appointment is agreed with the responsible municipal authority; any notifications required under explosives legislation must also be observed.
Working together
Distinguish the tasks of client, designers and specialist contractor
Client and operator
The client describes the project and provides the existing project documents. The operator adds the requirements for use, access and timing. A named contact coordinates the assigned tasks with those responsible. Before commissioning, a clear record is made of which information is missing, who will obtain it and which decision the results are intended to inform.
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 ordnance specialist contractor undertakes the agreed investigation and documentation scope permissible for the activity. Official requirements are clarified with the public order department of the town of Oberhausen. The Rheinland explosive ordnance disposal service at the Düsseldorf District Government is involved for state aerial photograph analysis and other state specialist tasks. Entry permission, utility information and the private service commission are assigned to their respective purposes. FONTANA-EOD's report documents the specialist service performed with its purpose, areas addressed and remaining limits. Responsible project participants link this status to the next construction task and decisions required.
Investigation task
Which specialist task comes next?
Identify information gaps before defining the service
The planned ground intervention is compared with known utilities, available areas and existing ordnance documents. These documents serve different purposes. A utility plan is not a historical ordnance analysis. Missing information is identified separately so specialist task selection does not rely on assumptions without evidence.
Assess historical documentsAlso assess technical conditions
Even where entry is agreed, installations may affect investigation. The method and achievable findings are assessed according to the actual task. Organisational preparation does not remove technical limits. Before a private commission, the North Rhine-Westphalia prerequisites for the specific activity are also checked and necessary official steps considered.
Compare investigation methodsProject types
Show prerequisites for each work area
Distinguish the access route from the actual working area
An open access route does not mean every area needed is permitted or accessible. Describe the route to the investigation area and known restrictions within the property. Identify who must agree access. Additional areas are not implicitly included in existing permission. During ongoing operations, also identify access times and traffic routes to keep clear. Record who makes the area available on the investigation day and which sections become available only later. Changed routes are assigned to the intended working areas on the current plan.
Coordinate the sequence and tasksPass on utility documents with their status
The origin, date and spatial scope of available information matter for preparation. Different plan versions are assigned traceably. A missing entry does not, by itself, prove the absence of utilities. Unknown routes remain identifiable as outstanding questions and are clarified with those responsible before affected work.
Document findings and their limitationsIdentify areas occupied by operations
If an area is available only at certain times, this must be known during preparation. Describe the area concerned and coordination required. An agreed investigation date does not automatically make it available. Areas not addressed remain unresolved even if they belong to the same operational site.
Coordinate the sequence and tasksPreparation
Prepare the scope and commission together
For commissioning, the investigation objective, existing findings and local procedural status are brought together. Buildings, utility routes and connection excavations remain identifiable with their respective groundworks.
Establish what needs to be known before commissioning the work
The commission first needs to clarify which decision is to be prepared. Is the task an initial assessment of existing documents, investigation of a particular area, or further work on a finding already assessed? These tasks require different evidence. A general wish for safety does not yet describe an executable investigation scope. The enquiry therefore identifies the groundworks, location, depth and findings available. Suitable specialist work and results documents needed are agreed on this basis. For a quotation, provide complete reports with their plan attachments and the current construction design. Identify the findings required for the next contract award. Where building and infrastructure works are commissioned separately, shared connection points and outstanding investigation areas are explicitly assigned.
Define the specialist taskCoordinate preparatory work with the investigation
The access and measurement conditions required are clarified before the appointment. These may include areas to be kept clear, available utility information and coordination with other trades. The preparatory work actually needed follows from the chosen method and site. Surface changes or additional ground interventions are not undertaken independently merely to prepare a measurement. Their sequence is agreed with specialist planning and those responsible. Identify foundations retained, utilities and the areas actually available at the appointment. The type and scope of preparatory services needed are agreed with those responsible. If additional working areas are required, their location is compared with the plans before investigation. Changes to the ground follow the specialist sequence clarified for them.
Clarify preparatory work in the programmeAgree a clear scope and schedule
A reliable sequence distinguishes work already clarified by specialists from outstanding prerequisites. If an area will be only partially accessible, account for this when commissioning. Handover and assessment of results also need time in the construction programme. Costs and dates are agreed for the specific specialist task and actual execution conditions. Coordination links the described scope with access, documents, work conditions and the date a decision is needed. Costing particularly considers area, depth, method, access, interpretation and documentation. The town gives approximately 15 working days for an enquiry to the District Government. This figure is compared with current official status and complete documents. Dates for fieldwork, necessary preparation and handover of results are coordinated separately with the construction phase.
Discuss the scope and scheduleTasks at the site
Clarify access, utilities and preparation
01
Access to the property
Describe the access route to the planned working area and whether an appointment is needed. Also record if only certain parts are accessible. Clarify entry rights for all areas required even if the access route is open. Assign consent and organisational provision to the actual working area needed. Where several owners or users are involved, identify the respective areas and contacts. Scheduling considers operational routes and areas remaining in use during investigation.
02
Compile utility information
Provide available as-built plans and information with their status. Known routes, unclear sections and already documented differences should be distinguishable. Identify information gaps and clarify further action. Do not declare an area free of utilities without sufficient grounds. Assign each statement to the area concerned and intended work stage. Conflicts between plans and known local differences are clarified with those responsible. The agreed investigation scope considers what information is still needed before execution.
03
Consider operational and traffic areas
If a business or transport route remains in use during the project, identify the areas and restrictions concerned. Investigation planning can then clarify which areas are available when. Uninvestigated areas must remain identifiable in the later report.
04
Define preparatory groundworks separately
Describe necessary preparation separately and clarify its prerequisites. Earthworks do not become safe merely because they prepare an ordnance investigation. Their scope and necessary protection and coordination measures must be clarified by specialists before they start.
Project documents
Documents that establish the next step
Involve owners and operational management together
Consent to entry and operational organisation may involve different contacts. Record who clarifies each question and what documents exist for this. The agreement must fit the actual specialist task. A form intended for the state explosive ordnance disposal service is not used as a general commission to another contractor. For factory and operational sites, identify owners, the occupying organisation and responsible project participants with their tasks. Record who grants permission, who provides access and who is told about date changes. Link this assignment to the investigation area described.
Describe preparation as a task in its own right
Necessary preparation is expressly identified and agreed before it begins. It is not safe merely because an investigation is to follow. Responsibilities, existing information and prerequisites for the planned activity are checked. The investigation commission should identify what work and information actually belong to its service. For coordination, document the working area, information needed and responsible participants. Agreed preparatory services are linked to the construction phase and investigation date. Changes to the surface, use or accessibility are compared with specialist plans before each affected activity.
The project file includes initial data and existing historical documents with a site plan and clear cadastral plot, route or construction-area reference. The report assigns measurements, survey results and their specialist assessment to the areas actually investigated. After clearance work, the clearance record adds the actual scope and results. Conclusions derived and outstanding tasks are provided with the applicable plan version for the operational construction sequence.
Construction sequence
Coordinate investigation and construction sections
Before agreeing the investigation date
Compile the site plan, known utility information and intended access routes. Identify unavailable areas and permissions or information still outstanding. Those involved can identify preparation still needed. A date is agreed on this basis without treating missing prerequisites as already fulfilled.
Before handover to site management
The report is handed over with the areas actually investigated and remaining limitations. Assign inaccessible areas to the current construction plans. Further action must be clarified separately for later ground interventions there. A shared property address does not extend the documented investigation scope.
Method selection
Select methods according to the task and survey conditions
Historical records and aerial photographs
Historical aerial photograph assessment and other old records help place the basis for suspicion in its spatial context. The available images, their evidential value and the limits of the area considered matter. The absence of an identifiable indication must be distinguished from a technically surveyed ground area. The assessment is considered together with the planned intervention and other available findings. It can support the choice of a survey, but is not a measurement of the present-day subsurface or confirmation for all future works.
Understand aerial photograph assessmentMagnetometric survey
Magnetometric methods detect magnetic anomalies. Whether they can address the specific survey task depends, among other things, on the expected objects, ground conditions, interference and required survey area. Fences, utilities or existing structures may affect interpretation. A measurement signal is therefore not described as ordnance solely because of its strength. Method, interpretation and any further investigation are planned as a connected specialist task.
Understand the scope of magnetometryElectromagnetic methods
Electromagnetic investigations can be suitable for particular metallic targets and site conditions. Their suitability must be explained for the task, rather than inferred simply from the availability of equipment. Interfering installations, accessible areas and the findings required must also be considered. Results are documented with their location and survey conditions. The specialist assessment determines whether a supplementary method is needed; this remains a project-specific decision.
Understand electromagnetic surveyingGround-penetrating radar
Under suitable conditions, ground-penetrating radar can provide information about subsurface structures and reflections. Ground conditions, moisture, installations and the particular survey task affect interpretability. An anomaly is not automatically ordnance, and an area with no apparent anomalies is not general evidence for arbitrary depths. The specialist interpretation and its limits are documented with the instruction. A survey for another purpose is not adopted without checking as ordnance evidence.
GPR and limitationsDeep-ground and downhole surveys
For deeper groundworks, it may be necessary to establish whether a surface investigation can provide the required findings or another approach is needed. Preparation includes the location, depth, borehole layout and existing services. Creating access for the investigation must also be properly planned by specialists. A general depth figure or standard grid cannot replace that work. Findings remain limited to the areas actually investigated and the method used.
Prepare deep interventionsSurvey during construction
If a necessary preliminary investigation cannot be completed, the specialists assess whether a planned approach during construction is suitable. This includes coordinated investigation, interpretation and communication of findings within the intended work sequence. Visual observation of excavated material is not an interchangeable substitute for a necessary survey. Site management needs a clear description of when specialist work will take place, how new findings will be handled and which areas remain unresolved.
Agree the approach during constructionTechnical assessment
What to consider before measurement and during interpretation
Ordnance documents and utility plans
A historical aerial photograph analysis is related to the planned ground intervention together with existing reports and official notifications. It does not replace information on current utilities. Conversely, a utility plan does not answer whether suspected ordnance requires investigation.
Installations and restricted survey conditions
The surface survey needs preparation suited to the task. Above-ground and underground installations may affect interpretability. Record where measurements are restricted and what findings remain possible. Permission to enter does not change these technical limits.
Prerequisites for private specialist services
The survey takes place within the commissioned and permissible service scope. North Rhine-Westphalia specifies particular prerequisites for private downhole detection and explosive ordnance clearance during construction. Coordination of entry or utilities does not replace them; nor is visual observation alone sufficient as a substitute for planned detection.
Next steps
Documents for the investigation date
Mark the area
Mark property boundaries, groundworks and investigation areas on the plan. The initial project enquiry discusses the construction task, areas, depths and next decision needed. Alongside new buildings, demolition, connections and temporary construction stages are included. Known utilities and the respective current plan version are assigned.
Describe working conditions
Describe access, utility information and operational restrictions in full. Information, aerial photograph analyses and investigation reports are checked for plan version, spatial coverage, depth reference and outstanding questions relating to today's task. The scope actually documented is decisive. Missing or conflicting details are identified with their relationship to the planned ground intervention.
Supplement historical information
The required state aerial imagery analysis is initiated through the municipal procedure provided locally. If the available findings need supplementation, further historical research is carried out for the specific question. Available aerial imagery, maps and records of use are professionally analysed and related to the present-day construction site. The findings feed into further investigation planning.
Agree preparation
Record the preparation needed, responsible parties and outstanding prerequisites. The specialist contractor selects the technically suitable approach according to the investigation objective, basis for suspected ordnance, ground build-up, interference and access. Preparatory services and permissible activity scope are clarified. Investigation areas and interfaces are coordinated with the construction sequence.
Investigate and assess results
Within the agreed and permissible scope, the defined areas or points are investigated using a suitable method. The data collected are recorded with location, depth reference and site conditions. Specialist personnel assess results and anomalies according to the investigation objective, method and interference. A measurement anomaly is not yet identified ordnance. Further clarification required and areas not adequately investigated are identified; local reporting procedures apply if ordnance is found.
Assign results
Hand over areas addressed and remaining gaps with the project plan. Work performed and its specialist assessment are documented in a report with associated location drawings and plans. Methods, areas addressed, depth references and limitations remain traceable. The client and designers compare this status with the next construction phase. Additional specialist work or official steps are identified before the ground interventions affected.
Documentation
Document investigated and unresolved areas
Findings and their scope
Record in the project file which plan version was used, what task was commissioned and which areas were actually investigated. Identify areas that were inaccessible or had restricted measurability. Pass these limitations on with the report.
Project responsibilities
FONTANA-EOD's specialist documents record the commissioned service and its results. Official notifications, access agreements and utility information remain identifiable as separate source documents. The BFR Kampfmittelräumung can provide specialist guidance outside their direct federal-property scope; local decisions and specific contractual limits must be observed separately.
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
Accessibility and permission are different details
An area may be physically accessible without entry for the specific activity being agreed. Conversely, permission may exist while an actual obstacle remains. Identify both questions during preparation. This keeps clear which prerequisite is missing and who addresses it.
Understand investigation reports and their limitationsA declaration needs a traceable basis
Documents on existing utilities are considered with their origin and revision status. Uncertainty is not concealed by a blanket declaration. Necessary additional clarification is agreed before the affected work. The later investigation result remains a separate form of evidence from these preparatory details.
Understand the service scopeDesign and findings
Documents for the next construction decision
Historical evidence and the current design
Aerial photograph interpretation is related to the actual groundworks. Its purpose and geographical scope remain distinct from a technical investigation of the ground as it is today.
Understand aerial photograph assessmentSpecialist reports for site management
The findings, their locations and limitations are handed over together. This makes clear to those carrying out the work which area has been investigated and which task remains outstanding.
Assess investigation reports
Further technical topics
Further technical information for your project
Determine the specialist service from the planned groundworks
Historical assessment, technical investigation and further work answer different questions. For the enquiry, the investigation objective, available results and outstanding decision are assigned to the appropriate specialist task.
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 preparation in Oberhausen
Is an intention to buy sufficient for municipal aerial photograph analysis?
According to the town of Oberhausen's published guidance, an intention to buy alone is insufficient. The application describes the planned construction activity and clearly defines the area concerned. Check the specific application against current municipal requirements.
Does permission to enter replace a commission to FONTANA-EOD?
No. The form provided by the town concerns the explosive ordnance disposal service or a contractor it commissions. For FONTANA-EOD, the service commission, permissible activity scope and access needed for that commission must be clarified separately.
What should I do if utility information is incomplete?
Identify the gaps and provide available documents with their respective status. Further action is agreed before the affected work. Unknown routes should not be concealed by a declaration of no utilities without evidence.
Does the evidence also apply to inaccessible areas?
No. Evidence applies to the areas actually investigated within its stated limits. It is not extended by a shared property number or neighbouring investigation. Further action must be clarified for the uninvestigated part.
What should I do if I find possible ordnance?
Stop work in the affected area, do not touch or move the object and keep your distance. The town specifies immediate notification to the public order department or police. In an acute situation, contact the police on 110; follow the responsible authorities' instructions.
Why are the access route and investigation area described separately?
Because access to the route does not establish availability of every working area. Necessary routes, areas and restrictions are assigned to the specific commission.
What details belong with a utility plan?
Its origin, revision and identifiable area of applicability. Known differences and unresolved sections are identified additionally, rather than treated as an absence of utilities.
Which costs and lead times need clarification before commissioning?
The town describes application processing as free of charge and notes possible costs for ordnance clearance. Necessary preparatory, accompanying and follow-up measures, and a private specialist commission, are assigned separately. The private scope considers area, depth, method, access, interpretation and documentation. The town gives approximately 15 working days for an enquiry to the District Government. Coordinate current status, complete documents and preparatory services needed with the proposed investigation date.
Project enquiry
Coordinate access and utilities before investigation
Describe entry precisely
Identify access routes, contacts and restrictions for each area needed. The municipal application describes planned construction activity and presents a clearly defined investigation area. The town requires a suitable map at a scale of 1:5,000 with identifiable plot boundaries and at least two legible street names. An intention to buy alone is excluded by the town as an application basis. For specialist coordination, add the construction phase, depths and official notifications available.
Provide complete documents
Send the site plan, ordnance documents and utility information with their dates and known gaps. For areas available only at certain times, agree availability before investigation. If not addressed, they remain identifiable in the documentation with their locations and outstanding tasks. Also state which earthworks begin first and what finding is needed for them. The project address, cadastral plots, route or borehole list and existing geotechnical documents are assigned to the current construction area.
Preparation and project process
Preparation and project processInvestigation planning and documentation
Investigation planning and documentationUnderstand regional responsibilities
Understand regional responsibilitiesClarify further investigation of findings
Clarify further investigation of findingsDefine the construction task and application
Define the construction task and applicationCoordinate area-based work on specialist grounds
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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.
