Quick answer: Stump grinding commonly requires one or more SWMS because it involves High Risk Construction Work triggers including the use of mobile plant and the risk of striking underground services. The specific SWMS you need will depend on the equipment used, site conditions, proximity to utilities, and whether the work is near roads or public access areas.
Last reviewed: June 2026 by the BlueSafe Technical Team. Reflects current Australian WHS requirements.
Stump grinding is often treated as a routine clean-up task at the end of an arborist job, but its hazard profile is distinct and can be significant. The grinding wheel generates high-velocity projectiles, the machine operates close to buried services, the noise levels are considerable, and public bystanders are frequently nearby. Getting the SWMS documentation right for stump grinding is just as important as it is for the tree removal work that precedes it.
At a glance
| Item | Summary |
|---|---|
| SWMS required? | Commonly yes — mobile plant and underground services HRCW triggers typically apply |
| Licence required? | No specific high risk work licence for stump grinder operation, but operators must be trained and competent |
| HRCW triggers | Mobile plant operation, risk of striking underground services or utilities |
| Typical tasks | Stump grinder operation, chainsaw use to cut large stumps, manual handling of debris, site cleanup |
| Main SWMS focus | Flying debris exclusion zones, underground services location, machine guarding, public access control |
| Main risk | Underground utility strike, flying debris injury to workers or public, machine entanglement, hearing damage |
Recommended SWMS set
The table below lists SWMS that are commonly needed for stump grinding work. The exact combination will depend on the job scope, site conditions, and work method.
| SWMS | Why it may be needed |
|---|---|
| Stump Grinder SWMS | Covers the operation of the stump grinder itself — the primary mobile plant on site with its own hazard profile including flying debris, entanglement, noise, and vibration |
| Chain Saw SWMS | Where a chainsaw is used to pre-cut large stumps, reduce stump height, or remove surface roots before grinding commences |
| Mobile Plant SWMS | Where tracked or wheeled stump grinders, skid steers, or other mobile plant are used for access, positioning, or debris handling |
| Undertaking Arborist Activities SWMS | Where stump grinding forms part of a broader arborist scope — covers the overall arborist activity framework including assessment and ground operations |
| Manual Handling SWMS | Where workers are manually moving stump grindings, mulch, surface debris, or equipment across the site — particularly relevant on uneven or sloped ground |
| Location of Underground Services SWMS | Required wherever services may be present beneath or adjacent to stumps — covers the DBYD process, potholing, and service marking before grinding |
| Traffic Control SWMS | Where stump grinding is in or adjacent to a road, footpath, driveway, or any area with vehicle or pedestrian traffic |
When does stump grinding need a SWMS?
Under Australian WHS legislation, a SWMS is required for High Risk Construction Work (HRCW) on a construction project. Stump grinding commonly triggers HRCW for two primary reasons.
Work involving mobile plant
A stump grinder — whether self-propelled, tracked, or tow-behind — is mobile plant. Its use on a construction project triggers the mobile plant HRCW category under the model WHS Regulations. The SWMS must address the machine operating area, exclusion zones for bystanders and other workers, pre-start inspection requirements, and procedures for safely shutting the machine down.
Risk of striking underground services
Working in an area where there is the potential to strike underground services is an HRCW trigger under the model WHS Regulations. Stump grinding is directly at ground level — and often below it — placing the grinding wheel in close proximity to buried gas lines, electrical cables, water mains, telecommunications conduits, and stormwater or sewer infrastructure. This trigger applies wherever services may be present, and in residential, commercial, and urban environments that is almost always the case.
Note on jurisdiction
Requirements vary across states and territories. Victoria operates under separate WHS legislation to the model WHS framework used in NSW, Queensland, South Australia, Western Australia, Tasmania, the ACT, and the Northern Territory. In all jurisdictions, duty holders should check applicable regulations, codes of practice, and any utility protection requirements before commencing stump grinding. Some jurisdictions have specific obligations around notification to service authorities before excavation or grinding near known services.
Common hazards in stump grinding
Stump grinding has a concentrated hazard profile. The machine generates significant force at ground level in an environment that is often constrained by fences, buildings, vehicles, and members of the public.
- Flying debris and wood chips — the grinding wheel can eject wood chips, stones, soil, and fragments at high velocity over a considerable distance, creating a serious risk to workers and bystanders who are not behind adequate barriers or shielding
- Underground services strike — contact with a buried gas line, electrical cable, or water main during grinding can have fatal or serious consequences — this is the highest consequence risk in stump grinding work
- Machine entanglement — contact with the rotating grinding wheel or drive components can cause severe or fatal injuries — machine guarding and exclusion zone disciplines are critical controls
- Noise and hearing damage — stump grinders typically operate at noise levels exceeding 85 dB(A) at the operator position, requiring hearing protection and hearing conservation controls
- Whole-body and hand-arm vibration — prolonged operation of vibrating plant creates cumulative health risks — operator rotation, machine maintenance, and exposure time monitoring are relevant controls
- Public access and bystander risk — stump grinding is frequently carried out in residential settings with pedestrians, children, and neighbouring properties in the immediate area
- Manual handling injuries — moving grinding waste, surface debris, and equipment across uneven ground and slopes contributes to strain and musculoskeletal injury risk
- Slips, trips, and falls — loose grindings, uneven ground, exposed roots, and wet conditions create a high slip and trip hazard around the working area
- Dust exposure — fine wood dust generated during grinding may contain silica or other hazardous materials depending on the species and any treatment history of the tree
- Equipment transport hazards — towing and manoeuvring stump grinders on public roads or through access gates presents its own vehicle and pedestrian interaction risks
Controls that should be addressed in your SWMS
Effective controls for stump grinding should be documented clearly in the relevant SWMS. Key control areas include the following.
Exclusion zones
An exclusion zone of at least 15 metres in all directions from the grinding wheel is commonly recommended during operation, though the appropriate distance depends on the machine type, grinding conditions, and the presence of physical barriers. Barriers such as heavy-duty protective matting, hoarding, or solid fencing significantly reduce the required exclusion distance. The SWMS should specify the exclusion zone dimensions, how it will be established, and who is responsible for maintaining it.
Underground services location
Before any grinding commences, a Dial Before You Dig (DBYD) enquiry must be lodged and the response reviewed. Site-specific services plans should be obtained, and any services identified in the vicinity of the stump should be physically located and marked. Where service plans are unclear or indicate services may be in the grinding path, non-destructive potholing or hand digging to expose and confirm service depth and position is required before machine work begins. The Location of Underground Services SWMS should document this entire process.
Machine guarding and pre-start inspection
The grinding wheel enclosure and all other machine guards must be in place and in good condition before starting. A documented pre-start inspection should confirm the condition of the grinding wheel teeth, the guard integrity, fluid levels, and operator controls. Any defects identified during pre-start must be rectified before the machine is used.
Personal protective equipment
PPE for stump grinding should at minimum include a full-face shield or safety glasses, hearing protection rated to reduce exposure below the action level, a hard hat, steel-capped footwear, and heavy-duty gloves. Where dust generation is significant, respiratory protection may also be required. PPE requirements should be listed in the SWMS and confirmed at the pre-start toolbox talk.
Other documents you may need
A SWMS is not the only document that should be in place for stump grinding work. Depending on the job scope and site, the following supporting documents are typically also required or expected.
| Document | When typically needed |
|---|---|
| Dial Before You Dig (DBYD) enquiry records | Before any grinding commences — must be lodged and response reviewed for every job where services may be present |
| Site-specific services search and marking record | Where services are identified near the stump — documents the physical location and marking of services before grinding |
| Plant pre-start checklist | For the stump grinder and any other mobile plant on site — completed before each operational period |
| Site risk assessment | Before work commences — identifies site-specific hazards including stump condition, access constraints, proximity to structures and services, and public access |
| Toolbox talk record | Pre-start safety discussion with the crew covering the site-specific hazards, exclusion zones, services location results, and emergency arrangements for that day |
| Traffic management plan | Where work affects a road, footpath, or driveway — often required by council or local authority conditions |
| Worker training and competency records | Evidence that operators are trained and competent on the specific machine being used |
Example scenario
A two-person arborist crew is completing a residential job following tree removal. Three stumps remain — one in the back garden near the property boundary, one in the front verge adjacent to the footpath and street, and one close to the house where an irrigation system is suspected. A self-propelled stump grinder has been brought to site.
For this job, the crew should consider having in place:
- A Stump Grinder SWMS covering machine setup, exclusion zone establishment, pre-start inspection, grinding procedure, and shutdown
- A Location of Underground Services SWMS covering the DBYD enquiry already lodged, the services plan review, and the specific process for the stump adjacent to the house where irrigation and potentially other services may be present
- A Traffic Control SWMS covering the verge stump work, pedestrian management on the footpath, and any temporary traffic controls needed on the street
- A Manual Handling SWMS covering the movement of grindings and debris across the site, particularly around the back garden where access is constrained
- A Chain Saw SWMS if any of the stumps need to be reduced in height or pre-cut before the grinder can be applied
- A site-specific risk assessment identifying the location of known services, the proximity of the house and boundary structures, and the public access exposure on the front verge
- Completed DBYD enquiry documentation and a services marking plan for the front verge and the house-adjacent stump
- A pre-start checklist for the stump grinder completed before the machine is first used on site
- A pre-start toolbox talk record confirming that both crew members understand the exclusion zones, services locations, and emergency arrangements for the day
This combination ensures that each distinct element of the job — the machine operation, the services risk, the traffic exposure, and the physical labour — has clear documented controls that the crew can refer to throughout the day.
Frequently asked questions
Does stump grinding require a SWMS?
In many cases yes. Stump grinding commonly involves HRCW triggers including the use of mobile plant and the risk of striking underground services. Both of these independently require a SWMS on a construction project under the model WHS Regulations. Even where the work falls outside the formal definition of a construction project, the hazard profile of stump grinding — particularly flying debris and underground utility risk — means that documented safe work methods are expected by WHS regulators across all Australian jurisdictions.
Do I need to locate underground services before stump grinding?
Yes. Locating underground services before grinding is a legal obligation under WHS legislation and the relevant utility protection requirements in all Australian jurisdictions. A Dial Before You Dig enquiry must be submitted and the response reviewed before any grinding commences. Where services are indicated near the stump, physical marking and in some cases non-destructive exposure of the service is required before the machine is used. The Location of Underground Services SWMS should document the entire process from DBYD enquiry through to confirmed service positions and any depth or clearance constraints.
What PPE is required for stump grinding?
Stump grinding generates high-velocity wood chip and debris ejection and operates at noise levels that commonly exceed 85 dB(A) at the operator position. Required PPE typically includes a full-face shield or safety glasses rated for high-impact debris, hearing protection with a suitable noise reduction rating, a hard hat, steel-capped footwear, and cut-resistant or heavy-duty gloves. Where dust generation is significant — particularly for hardwoods or treated timber — respiratory protection should also be assessed. All PPE requirements should be specified in the SWMS and confirmed during the pre-start toolbox talk.
Can one SWMS cover stump grinding and the rest of the arborist job?
Not reliably. Stump grinding has a distinct hazard profile — particularly flying debris, underground services strike, machine entanglement, and noise and vibration — that is different from tree removal, climbing, or chipping work. Attempting to cover all arborist activities in a single document typically results in a SWMS that is too broad to be practically useful or to consult during the work. Purpose-built SWMS for each major activity produce clearer documents that workers can actually refer to on site and that can be updated when equipment, methods, or conditions change.
Need help choosing the right SWMS?
The right SWMS set for your stump grinding job will depend on the equipment you are using, the site conditions, what services may be present, and whether the work is in or near traffic. Browse the individual SWMS products below or use the links to find out more.
Stump grinding and arborist SWMS:
Plant and equipment SWMS:
Site and services SWMS:
Not sure which combination is right for your job? Use the SWMS selector to find products based on your trade and tasks, or work through the WHS self-check to identify gaps in your current documentation.
This guide provides general information only and does not replace project-specific risk assessment, legal advice or consultation with the relevant WHS regulator. Duty holders should assess the actual work, site conditions, workers, plant, substances and applicable state or territory requirements before selecting or using a SWMS.