Project pathway
The quickest route to the right decision.
Explosive ordnance surveys and disposal in Münster
Old foundations, utilities or metallic installations can impair a survey. Before groundworks in Münster, clarify which areas can be investigated and how informative the results are there. FONTANA-EOD supports preparation and documents the commissioned investigation, including its limits.
Record installations and earlier changes.
Check method suitability and survey limits.
Identify areas not conclusively investigated.
Assess the construction project
Explicitly record areas that cannot be interpreted
Metallic installations may affect investigation among existing buildings. For your Münster project, we consider survey conditions together with the area and depth of planned ground interventions. An area without sufficient interpretability is not treated as an investigation result without anomalies. The Münster fire service classifies the town as an area subjected to bombing and recommends an ordnance investigation application before construction involving ground intervention; actual property conditions are clarified under the local procedure.
Project site
Connect the site with the specific construction task
Link Münster's responsibilities and technical assessment
Münster is an independent town in the Münster administrative district in North Rhine-Westphalia. Identify the precise project address, for example in Innenstadt or Altstadtring, Kreuzviertel or Josefviertel, Gremmendorf, Hiltrup, Sentrup, Geistviertel, Coerde, Nienberge, Handorf or Roxel. For a project in Greven, Telgte, Senden, Havixbeck, Everswinkel, Altenberge or other Münsterland locations, identify the respective municipality separately. The location links your project with the responsible authorities. Specific ground interventions, existing knowledge and actual investigation conditions on the property remain decisive.
Local context
Applications and survey conditions in Münster
Münster fire service and state explosive ordnance disposal service
The town of Münster explains that applications reach the Westfalen-Lippe explosive ordnance disposal service through the fire service. Further investigations may be needed after aerial photograph analysis. Municipal guidance also identifies possible survey restrictions from high iron content on previously built-on or filled sites. Investigation planning must consider these conditions.
Consider interference and earlier buildings
If an excavation is planned between existing buildings, old foundations or utilities at its edges may affect investigation. Record these obstacles beforehand. Clarify which parts can be investigated, what findings are needed for construction and how outstanding questions are to be handled.
Münster town museum documents destruction in the town centre from the air raid of 10 October 1943. The historical images and reports help assess conditions at the time during preliminary research. For today's construction projects, documented wartime damage, reconstruction and later changes of use are linked spatially to the property. This also concerns available findings on station, track and bridge areas, transport and utility routes, and former industrial and conversion sites. For projects at service-sector sites, documented earlier remediation, compaction and soil relocation also inform document review. Today's investigation task is determined from the specific records available, ground intervention and actual survey conditions.
Requirements
Clarify technical requirements and responsibilities within the project
Relate requirements to the specialist task
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.
Link occupational safety to the construction sequence
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.
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.
Procedure at the site: Münster fire service: organisation of ordnance investigations · North Rhine-Westphalia KampfmittelVO: Section 3 in particular.
Planning and documentation: BFR KMR: principles of clearance planning · BFR KMR: geophysics · BFR KMR: documentation · KBD North Rhine-Westphalia: guidance for downhole detection and explosive ordnance clearance during construction · DGUV: explosive ordnance clearance FAQ
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.
Private works are subject to the exceptions under the KampfmittelVO and the requirements of the official guidance. The exceptions concern, in particular, downhole detection as part of specialist foundation engineering and explosive ordnance clearance during construction under the conditions laid down by law. Private explosive ordnance clearance during construction requires that prior investigation using recognised explosive ordnance detection methods is not possible. A relevant factor is also the state explosive ordnance disposal service's assessment that there are no specific indications of ordnance contamination on the site concerned. All further spatial, technical and organisational requirements are clarified for the specific activity. The competent authorities decide on the official appointment.
Working together
Allocate tasks within the construction project
Client and operator
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.
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 company carries out the agreed permissible investigation and documentation scope. Authority requirements and decisions are clarified with the respective competent bodies. The documents needed for a specific procedure depend on the site and project. The technical report documents the specialist service performed, including areas, depths and limits of its conclusions. Its applicability to further groundworks is checked against the specific intervention.
Within Münster's municipal administration, the fire service performs the tasks of the responsible special public order authority. It manages the local application procedure and works with the state explosive ordnance disposal service at the Arnsberg District Government. For a project outside the town, establish the respective municipal responsibility from the project address. Involvement of the authorities and all prerequisites for permissible private activities are assigned before work.
Investigation task
Which specialist task comes next?
Assess survey conditions before selecting a method
Consider the finding needed and installations that may affect investigation together. A general method name is insufficient for this. The iron-related influences described in Münster prompt a specific review, rather than a blanket exclusion or evidence of success for a particular method.
Assess historical documentsDescribe a remaining question precisely
If an area cannot be interpreted sufficiently, describe the outstanding investigation question by location and finding needed. The specialist contractor agrees suitable next steps with the designers and responsible authorities involved. The permissible private commission is defined according to North Rhine-Westphalia prerequisites. Planned work accompanying construction is justified by specialists and incorporated into the programme with necessary investigation and protection prerequisites.
Compare investigation methodsProject types
Consider interpretability and the planned ground intervention together
Mark existing foundations on the site plan
Existing foundations and other known installations belong in the investigation documents. Their location may matter for assessment of survey conditions. Missing as-built plans are identified as an information gap. An accessible surface does not yet prove that the ground beneath can be sufficiently investigated for the finding needed.
Show structures retained and those to be demolished distinctly. An existing foundation needs its known location, associated documents and clarification of whether it will still be present during investigation. Show newly planned foundations and additional working areas alongside them. The specialist contractor assesses how these conditions affect the finding needed. If demolition changes local conditions, agree new investigation needs before further groundworks. Missing information remains identifiable as outstanding preparation points.
Specialist services and investigation tasks
Record peripheral areas separately
Conditions at building edges or beside existing installations may differ from the rest of the area. Show which planned work affects these locations. A report for a part of the site with good interpretability is not transferred to unchecked edges. Limitations remain visible in the results and handover to site management.
Identify a peripheral area with difficult interpretability so the work planned there can be assigned clearly. An adjacent excavation, shaft or lateral working area may have different requirements from the rest of the site. For investigation in sections, agree which areas are available first and what results are needed for the next work. Specialist assessment describes the volume of ground actually covered. Areas left unresolved are handed to site management with their locations and clarification still needed.
Document findings and their limitationsDescribe known fill
Pass on indications of earlier fill or ground changes with available documents. They do not establish what objects are present. The information helps assess the specialist task and possible effects on investigation. Unknown compositions are not replaced by assumed material properties.
For known fill, details of its location, date and origin help where traceable information is available. Provide earlier ground level plans, demolition records and reports with associated annexes. Areas of different materials are assigned spatially during investigation planning. Existing indications are distinguished from assumptions. If a planning area is extended or changed by later soil removal, its relationship to previous findings is checked again. The specialist task description identifies the finding still needed for this volume of ground.
Specialist services and investigation tasksPreparation
Prepare the scope and commission together
Historical preliminary assessment, technical investigation and specialist work during construction answer different project questions. The permissible private activity under the specific North Rhine-Westphalia procedure is clarified with the information objective and necessary authority involvement before an agreement.
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
The 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 scheduleTasks at the site
Record foundations, utilities and earlier earthworks
01
Retained structures and installations
Mark known foundations, utilities and other installations on the current plan. Their location may matter for measurement and assessment. Missing entries on a plan do not establish that the subsurface is free of obstacles.
02
Earlier ground changes
Compile existing information on fill, soil removal or earlier construction work. Identify what is evidenced and where a question remains open. These details help investigation planning. They do not, by themselves, establish specific ordnance contamination.
03
Excavation, shafts and lateral working areas
Alongside the main excavation, describe shafts, foundations and lateral working areas. Conditions beside retained structures may differ from those on open ground. Consider these differences when defining investigation scope.
04
Infrastructure in several sections
For utility or road works, installations and working conditions may change from section to section. Assign existing results to each area accordingly and record local limitations.
For a utility section, also describe crossings, shafts and connections outside the continuous route. The plan shows which areas can be investigated under the same conditions and where separate assessment is needed. If a traffic area remains in use during the first phase, identify its actual availability. Update changed utility information and construction conditions for later investigations. Result documents remain assigned to each section so completed and outstanding tasks are identifiable when work continues.
Project documents
Documents that establish the next step
Coordinate operations and investigation
For buildings remaining in use, clarify necessary access and known obstacles with operational management. Organisational availability and specialist interpretability are different prerequisites. A cleared working area may still be affected by existing structures. Actual conditions are considered before defining investigation scope.
For administrative, university and other buildings remaining in use, coordinate investigation with the working areas actually available. Identify necessary access permissions and operational restrictions. Temporary access routes and set-up areas are also included in preparation. If these areas require breaking out or other ground interventions, clarify investigation and protection prerequisites beforehand. The specialist contractor assesses the finding achievable under these conditions. Areas accessible only later remain marked on the plan with their outstanding task.
Carry limitations forward to the next construction phase
Subsequent site management needs not only a result summary but also the map of covered and restricted areas. Relate it to the planned construction. A different contractor or later date does not change the report's limits. Unresolved areas are clarified before the affected ground interventions. Measurements, survey results and assessment of findings belonging to the commission remain linked to the complete report and associated plans. After clearance work, the clearance record with its scope, results and remaining limits is assigned to the areas actually treated.
Construction sequence
Coordinate investigation and construction sections
Before investigation on an existing site
Send details of known foundations, utilities, earlier alterations and current ground interventions. Identify missing plans and restricted access. These details help assess the investigation scope needed. Actual conditions are checked by specialists; unrestricted interpretability is not inferred from a general property description.
Before using a result with limitations
Assign the documented limits to the planned structures. Clarify which work is affected before construction. Pass the complete report to the specialist planners involved. An unresolved area is not treated as complete merely because other parts of the site have already been assessed.
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 investigation task depends, among other things, on the expected objects, subsurface conditions, interference and investigation area required. Fences, utilities or existing structures can affect interpretation. A signal is therefore not classified as explosive ordnance solely on its strength. The method, interpretation and any further investigation are planned as a connected specialist task. 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 magnetometryElectromagnetic methods
Electromagnetic investigations may be suitable for certain metallic target objects and site conditions. Suitability is justified for the particular task rather than inferred from the mere availability of an instrument. Interfering installations, accessible areas and the required conclusion must also be considered. Results are documented with their locations and investigation conditions. Whether a supplementary method is needed follows from technical assessment and remains a specific project decision. Transient electromagnetic methods, or TDEM, evaluate the time-dependent electromagnetic response of conductive objects. The method is selected according to the investigation objective and actual measurement conditions.
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 an investigation can establish under the given conditions
Compare aerial photograph analysis with construction plans
A historical aerial photograph analysis helps assess existing knowledge. For planning, then clarify which question the technical investigation is to answer. Analysis, current ground intervention and existing documents must be considered together; a general site description is insufficient.
Compare the area considered in an older analysis with the current construction plan. A new shaft location or larger excavation footprint may affect additional volumes of ground. Provide the complete report with associated plans, original assumptions and limitations. Specialist preparation checks which findings can continue to be used for the present project. Missing information is identified with its source and responsible designer. The subsequent investigation has a specific spatial task.
Metallic installations and survey interference
For the surface survey metallic installations or other interference sources may affect the detectability of relevant signals. Method selection and interpretation must consider this. If measurements have been taken but the data cannot be interpreted sufficiently, the area is not yet conclusively assessed.
The report distinguishes recorded measurements from the assessment actually possible from them. Limited areas are linked on the plan to the applicable investigation task. The specialist contractor describes relevant interference and remaining questions so subsequent participants can identify the evidential scope. A supplementary investigation considers changed local conditions and newly available information. Further construction is coordinated with the documented results and outstanding tasks. The report and annexes are passed on together.
Approach to outstanding investigation questions
If the chosen approach cannot answer a question, further steps need clarification by specialists and with the responsible authorities. A specialist supervision service during construction is not an interchangeable substitute method. In North Rhine-Westphalia, statutory prerequisites for private activities and state tasks must still be observed.
Next steps
From enquiry to documented investigation
Compile existing conditions
Record plans, earlier reports and known installations. At first contact, identify the project address, cadastral plots, construction task and contact. Existing information, reports and complete annexes are checked for revision status, area and depth references, and outstanding details. Necessary local procedural steps are assigned to the project.
Define the finding needed
Relate the investigation to planned groundworks. Where historical findings are missing for specialist clarification, we undertake the necessary source research and aerial photograph analysis within the agreed permissible commission. Results receive a spatial reference to today's intervention areas and are assessed for investigation planning. Necessary official analyses are coordinated with the responsible authority.
Assess conditions
Assess access, interference and possible limitations. Method selection considers the investigation objective, expected objects, ground conditions, interference and accessible areas. The permissible activity scope and necessary involvement of the authorities are clarified before work begins.
Perform the agreed investigation
The survey or investigation during construction appointed under North Rhine-Westphalia's requirements is carried out in the agreed areas and points. Measurement data and observations receive traceable location and elevation references. Uninvestigated areas, restricted access and relevant interference are recorded.
Assess survey data and findings
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.
Bring the report and plan appendices together
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 outstanding tasks
Keep areas not conclusively assessed identifiable in the project. Those involved agree the next specialist tasks from the results and their limits. Competent authorities make necessary official decisions. New areas, depths or construction methods are compared with the documented scope before further groundworks.
Documentation
Document investigated areas and remaining limitations
Findings and their scope
The report must identify which areas were addressed, what results are available and where limitations remain. Site management must be able to check whether its work area is covered. Pass on the site plan with associated explanations; a short status message is insufficient.
Project responsibilities
FONTANA-EOD records results within the agreed specialist service. If different structures, greater depths or additional sections are planned later, compare the existing report with them. Also consider the limitations of the earlier report. They continue to apply until clarified by specialists.
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
Interference is not an identified object
An influence on measurements initially describes a limitation or particular feature of the investigation. It must not lead to a conclusion about a specific object without further specialist grounds. Nor does the inability to interpret data reliably establish the object's absence. Results are documented within their actual evidential scope and with remaining questions.
Understand investigation reports and their limitationsA report needs spatial boundaries
A total area description may obscure local differences. Covered parts of the site and limitations should be assignable to the planned ground intervention. Site plans and depth references therefore remain linked to the report. A short statement without this basis is often insufficient for a later construction plan change.
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. 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 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 investigation conditions in Münster
Where is an ordnance investigation requested in Münster?
The town identifies the fire service as the local contact. It forwards the investigation application to the Westfalen-Lippe explosive ordnance disposal service. Use the current municipal forms and guidance for the application.
Does interference with measurements mean ordnance is present?
No. Different installations or other influences may impair measurements. This establishes neither specific ordnance evidence nor an assurance of safety. Its significance must be assessed by specialists in the context of method, existing knowledge and investigation task.
Is a measurement without anomalies always sufficient?
No. Method suitability, investigation scope and actual interpretability are also decisive. Areas with limited findings must be documented as such and considered in further planning.
How is a peripheral area not conclusively investigated handled?
It remains identifiable on the plan and in the documentation until further action is clarified. Whether additional investigation, different preparation or further coordination is needed depends on the specific task. A result for the neighbouring area does not automatically apply to this edge.
What should I do about a suspicious object during construction?
Stop work in the affected area, keep your distance and leave the object untouched. Notify the fire service immediately on 112 and follow the authorities' instructions. Do not touch the object or attempt to investigate or recover it yourself.
Does a cleared surface establish good interpretability?
No. Installations beneath or beside it may still affect investigation. Access and specialist interpretability are therefore assessed separately.
How are restricted peripheral areas passed on?
With their locations, documented evidential scope and relationship to the planned work. The limitation remains part of the complete report and is clarified before affected ground interventions.
What information determines investigation scope and costs?
Existing plans, reports and traceable indications of location and origin help assess known fill. Unknown compositions are explicitly identified as unknown, rather than inferred from today's surface. Costing private specialist work particularly considers area and depth, the permissible method, interference, access, preparation and documentation scope. Official and private services are assigned separately under the respective applicable cost rules or contractual agreement.
Project enquiry
Clarify survey conditions for your Münster project
Show known installations
Include available as-built plans for foundations and utilities, and indications of earlier alterations. Also describe known ground changes and their origin where traceable. According to municipal guidance, the official application includes a site plan at a scale of 1:250 showing the project and a cadastral extract at a scale of 1:500. Clarify current requirements with the fire service early. If area clearance or recovery tasks are needed, agree the specific area, information sought and permissible commission with the responsible authority.
Pass on the limits of findings
Send earlier reports in full and mark current ground interventions, particularly affected peripheral areas. State the next construction phase, earthworks due first and areas temporarily not yet accessible. Necessary preparation and handover of results can then be included in the programme. For another project in Aachen, Eschweiler or Cologne local responsibility and investigation needs are assigned separately.
Prepare the investigation task
Prepare the investigation taskRecord results and limits
Record results and limitsAssign the region and project location
Assign the region and project locationUnderstand the construction task and project setting
Understand the construction task and project settingCoordinate the necessary recovery task
Coordinate the necessary recovery task
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.
