Product Overview

Summary: This Site Excavation Safe Operating Procedure sets out a clear, step-by-step method for planning and carrying out excavation works safely and efficiently on Australian worksites. It helps you control high‑risk hazards such as ground collapse, underground services strikes, and mobile plant interactions while demonstrating compliance with WHS legislation and client requirements.

Excavation is one of the highest‑risk activities on any construction or civil works site, with the potential for trench collapse, plant–personnel interaction, and damage to underground services leading to serious injury, fatalities and major project delays. This Site Excavation Safe Operating Procedure provides a structured, practical framework for managing these risks from initial planning through to reinstatement, tailored to Australian WHS expectations and local authority requirements. It translates legal and technical obligations into clear actions that supervisors and operators can follow on the ground.

The SOP covers the full lifecycle of excavation works, including site assessment, Dial Before You Dig / Before You Dig Australia (BYDA) checks, service location, traffic and pedestrian management, shoring and benching requirements, spoil placement, environmental protection, and site hand‑back. By adopting this procedure, businesses can standardise how excavations are planned and executed across multiple crews and locations, making it easier to train workers, demonstrate due diligence to regulators and clients, and reduce costly incidents such as service strikes, collapses, and near misses.

Key Benefits

• Ensure consistent, compliant excavation practices aligned with Australian WHS legislation and local council requirements.
• Reduce the risk of ground collapse, service strikes and plant–personnel interactions through clearly defined control measures.
• Streamline planning and permitting for excavation works, including BYDA requests, permits to excavate and isolation procedures.
• Improve worker competence and confidence with a step‑by‑step procedure that supports toolbox talks and on‑the‑job training.
• Demonstrate due diligence to regulators, principal contractors and clients through documented, repeatable excavation processes.

Who is this for?

• Site Supervisors
• Construction Project Managers
• Civil Engineers
• Excavator Operators
• Leading Hands
• WHS Managers
• Safety Advisors
• Utilities and Services Coordinators
• Principal Contractors
• Local Government Works Supervisors

Hazards Addressed

• Trench and excavation wall collapse leading to engulfment or crushing
• Contact with underground utilities (electricity, gas, water, sewer, communications)
• Struck-by or run-over incidents involving excavators, trucks and other mobile plant
• Falls into open excavations by workers or members of the public
• Falls of objects, tools or materials into excavations
• Exposure to hazardous atmospheres in deep or confined excavations (e.g. gases, low oxygen)
• Ground instability due to vibration, water ingress or adjacent loads (spoil piles, vehicles, structures)
• Manual handling injuries from handling shoring, trench shields, pipes and materials
• Noise, vibration and dust exposure from excavation activities
• Environmental impacts such as sediment run-off, erosion and contamination of stormwater

Included Sections

• 1.0 Purpose and Scope
• 2.0 References, Legislation and Standards
• 3.0 Definitions (Excavation, Trench, Competent Person, No-Go Zone, etc.)
• 4.0 Roles and Responsibilities (PCBU, Site Supervisor, Operators, Spotters, Workers)
• 5.0 Planning and Pre-Start Requirements
• 5.1 Site Assessment and Risk Assessment (SWMS/JSA)
• 5.2 Dial Before You Dig / BYDA and Service Location
• 5.3 Permits to Excavate and Approvals
• 5.4 Consultation with Utilities, Clients and Adjacent Property Owners
• 6.0 Plant, Equipment and PPE Requirements
• 6.1 Excavators, Attachments and Mobile Plant
• 6.2 Shoring, Shields, Benching and Batter Requirements
• 6.3 Personal Protective Equipment (PPE) and Safety Devices
• 7.0 Site Setup and Controls
• 7.1 Access, Egress and Emergency Escape
• 7.2 Barricading, Guard Rails and Edge Protection
• 7.3 Traffic and Pedestrian Management
• 7.4 Spoil Placement and Load Restrictions Near Excavations
• 8.0 Step-by-Step Excavation Procedure
• 8.1 Marking Out and Confirming Services
• 8.2 Trial Holes and Non-Destructive Digging
• 8.3 Excavation Near Underground Services
• 8.4 Working in and Around Trenches and Pits
• 8.5 Backfilling, Compaction and Reinstatement
• 9.0 Hazard Identification and Control Measures
• 9.1 Ground Conditions and Stability
• 9.2 Water Ingress, Dewatering and Weather Impacts
• 9.3 Hazardous Atmospheres and Confined Space Considerations
• 9.4 Working Adjacent to Structures, Roads and Public Areas
• 10.0 Monitoring, Inspection and Maintenance
• 10.1 Daily Pre-Start Inspections of Excavations
• 10.2 Inspection After Rain, Vibration or Change in Conditions
• 10.3 Record Keeping and Corrective Actions
• 11.0 Emergency Preparedness and Response
• 11.1 Trench Collapse Response
• 11.2 Underground Service Strike Response (Gas, Electricity, Water)
• 11.3 First Aid and Incident Reporting
• 12.0 Training, Competency and Induction Requirements
• 13.0 Environmental Management (Erosion, Sediment and Waste Control)
• 14.0 Review, Audit and Continuous Improvement
• 15.0 Document Control and Version History

Legislation & References

• Model Work Health and Safety Regulations (Safe Work Australia), including provisions for excavation work
• Safe Work Australia – Code of Practice: Excavation Work
• Work Health and Safety Act 2011 (as implemented in relevant Australian jurisdictions)
• AS 1742.3: Manual of uniform traffic control devices – Traffic control for works on roads
• AS/NZS 4801: Occupational health and safety management systems
• AS 2159: Piling – Design and installation (relevant where temporary support affects adjacent structures)
• Before You Dig Australia (BYDA) – Duty of care and service location requirements
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces