Why it matters
Without AI, unreported disturbances, service strikes, and overlooked discoveries can stall works, trigger unsafe conditions, or delay post-excavation analysis and archive deposition.
From design to safety
Design
AI supports written scheme of investigation
The AI reads the WSI, desk-based assessment data, survey data, and site evaluation inputs to validate trench design against context lists, sampling plans, and expected feature zones.
- Watching Brief Protocol
- Discovery Protocol Registry
- Groundworks Monitoring Sensor
Build
real-time trench and service monitoring
During groundworks, it reads strip maps, plan views, service trench layouts, and utility corridor data to confirm alignment, detect deviations, and trigger immediate alerts for misalignment and exposure.
- Watching Brief Protocol
- Groundworks Monitoring Sensor
- Service Trench Scanner
- Discovery Protocol Registry
Operation
continuous recording and client reporting
Field recording integrates context sheets, photos, and photogrammetry outputs, while AI flags missing records, prompts staff to complete entries, and auto-synchronizes with the archive deposition plan.
- Discovery Protocol Registry
- Records Archiving Router
- Stop-Work Flag System
- Watching Brief Protocol
Maintenance
record integrity and post-excavation readiness
Post-excavation assessment inputs, archive deposition checks, and digital backups are verified against HER requirements, CIfA standards, and post-excavation review schedules.
- Records Archiving Router
- Discovery Protocol Registry
- Groundworks Monitoring Sensor
Safety
risk detection and compliance checks
AI scans for trench stability, buried services, contamination signals, and UXO indications, triggering stop-work, welfare updates, and compliance notifications to the project team and regulator as required.
- Stop-Work Flag System
- Service Trench Scanner
- Groundworks Monitoring Sensor
Part by part
- 1
Watching Brief Protocol
- Watch for
- unreported feature, disturbance, or cross-cut in context sheets and Harris matrix across multiple contexts
- AI action
- flag entry, generate alert, prompt field note update, and assign verification task to senior archaeologist
- 2
Groundworks Monitoring Sensor
- Watch for
- variation in soil color, texture, moisture, or stratification indicating disturbance or feature
- AI action
- log coordinate with time stamp, issue alert to supervisor, and trigger temporary stop if thresholds exceeded
- 3
Service Trench Scanner
- Watch for
- unrecorded buried service risk, excavation overlap, or proximity beyond safe threshold
- AI action
- pause excavation, issue stop-work notice, route service disturbance report to utility planner
- 4
Discovery Protocol Registry
- Watch for
- new feature discovered during strip map and sample collection
- AI action
- draft discovery report, populate context linkages, notify HER officer, and assign curator review task
- 5
Stop-Work Flag System
- Watch for
- significant safety hazard detected including unstable walling or water ingress
- AI action
- initiate stop-work workflow, emergency welfare briefing, and broadcast actionable instructions to crew
- 6
Records Archiving Router
- Watch for
- incomplete context sheets, missing site plan sheets, or post-excavation record gaps
- AI action
- queue archive deposition prep, verify digital backups, and align with HER submission timelines
Worked example
Watching Brief Trigger on Utility Intersection at 2.8 hectares
Illustrative scenario with sample data.
A utility trench crosses a suspected earlier feature; AI flags potential feature for immediate recording and decision on further sectioning.
Signal in
context_sheet_id=CS-217, trench_id=T-18, grid_ref=TL-45-NT, feature_guess=F4, time=2026-11-08T10:15:00Z, soil_type=reworked, depth=0.9m
System out
alert to field team; stop-work proposed within 15 minutes; discovery note drafted for archive deposition; next context sheet updated with F4 coordinates; curator notified.
Human sign-off: Project manager reviews the alert, validates the discovery note, and approves either continuation with containment or stop-work escalation; curator signs off on discovery report; HER officer reviews archival entry for completeness.
How to roll it out
Phase 1
Weeks 1 to 4: Baseline
Deploy sensing layer on watching briefs, initial service trench checks, and discovery protocol wiring for automatic alerts; validate routing to the site control room.
Phase 2
Weeks 5 to 8: Calibration
Calibrate thresholds for soil movement, utility proximity, and incomplete records; verify alert routing to supervisors and HER contacts; document calibration results.
Phase 3
Weeks 9 to 12: Full Operation
Operational AI monitors all zones, auto-generates reports, and integrates with HER and post-excavation workflows; conduct quarterly reviews with planning archaeologist and curator.
Where people stay in charge
- All trench stability decisions remain sign-off by the site engineer or qualified person within the formal chain of responsibility.
- No stop-work action may proceed without affirmative clearance from the supervising archaeologist after safety briefing and on-site inspection.
- All data handling and archive deposition actions must meet HER retention rules and CIfA standards with documented authorizations.
Questions owners and crews ask
What triggers a watching brief alert and who approves it?
An alert triggers when a predefined threshold for disturbance, service proximity, or missing record is met, and a qualified person signs off before any further action. Approval must occur within the site control room and be recorded in the incident log.
How does AI handle a potential buried service risk during trenching?
AI pauses work, notifies the supervisor, routes a danger assessment to the service planners and utility finders for confirmation, and logs the action as a formal stop-work event with a remediation plan.
What records are required for post-excavation archiving?
Context sheets, strip maps, plan and section drawings, photographs, discovery notes, and investigative logs are compiled for archive deposition; ensure cross-referencing with the HER entry and CIfA standard checks.
Who verifies the discovery alerts with the heritage authority?
The project manager coordinates with the curator or planning archaeologist to verify and approve discovery reports before deposition; the HER officer signs off the archival record after validation.
Sources and further reading
- Chartered Institute for ArchaeologistsProfessional standards and guidance for archaeological practice, covering records, archiving, and verification expectations for projects.
- CIfA: Standards and GuidanceStandards and guidance for post-excavation assessment, review stages, and archive preparation that set out expected timings and outputs.
- Archaeology Data ServiceGuidance on digital archive deposition, data formats, and keeping backed-up copies of excavation records safe for the long term.
- HSE: ExcavationsHSE guidance on trench collapse prevention, shoring, and safe working practice for excavations on construction sites.
- HSE: ConstructionHSE construction guidance on site welfare facilities, duties on sites, and keeping workers informed about safety arrangements.
- HSE: AsbestosHSE asbestos guidance on risks in made ground and contaminated sites that archaeologists may encounter while excavating.
- HSE: RIDDORHSE guidance on which injuries and dangerous occurrences, including service strikes, must be reported to the regulator.
- Historic EnglandHistoric England guidance on Historic Environment Records, their content, and how archaeological information is passed to them.
- MOLA: ServicesCommercial archaeology service pages covering desk-based assessment, evaluation, excavation, and post-excavation work in practice.
- OSHA: Trenching and ExcavationOSHA rules on trenching and excavation hazards, protective systems, and inspections, including underground utility dangers.