Description of main environmental impacts and proposed mitigation

Air quality

Construction activities associated with the proposed works have the potential to temporarily cause local air quality impacts. Activities undertaken on site may cause dust and particulate matter to be emitted to the atmosphere. However, taking into account the nature and scale of the works and the following mitigation measures, the risk of significant impacts to the air are considered to be low.

Materials that have a potential to produce dust will be removed from site as soon as possible, and vehicles that remove waste from site will have sheeted covers.
Ancillary plant, vehicles, and non-road mobile machinery (NRMM) will be regularly maintained, paying attention to the integrity of exhaust systems and switched off when stationary to prevent exhaust emissions (e.g., there will be no idling vehicles).
Cutting, grinding, and sawing equipment (if required) will be fitted or used in conjunction with suitable dust suppression techniques e.g., local exhaust ventilation system that fits directly onto tools.
Regular monitoring (e.g., engineer or Clerk of Works) will take place when activities generating air pollution are occurring. In the unlikely event that unacceptable levels of air pollution are emanating from the site, the operation will, where practicable, be modified and re-checked to verify that the corrective action has been effective. Actions to be considered include: (a) minimising cutting and grinding on-site, (b) reducing operating hours, (c) changing the method of working, etc.
Good housekeeping will be employed throughout the work.

With the above mitigation measures in place, it is anticipated that any air quality effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this Record of Determination (RoD).

Cultural heritage

Although the works are not located within, or in close proximity to, cultural heritage features of statuary protection, they will be undertaken within the verge of the A82, where there is a theoretical potential for previously undiscovered artefacts to be encountered. However, such discoveries are considered unlikely due to the absence of excavation works. It is therefore assessed that the proposed works will not adversely affect the value of cultural heritage interests, provided the following mitigation measures are implemented:

In the event of any unexpected archaeological finds, all works will cease immediately, the area will be cordoned off, and a member of the BEAR Environment Team will be contacted for advice. Historic Environment Scotland (HES) will be contacted as required.
Laydown areas will be sensitively located (e.g., on areas of made ground) to avoid areas of cultural heritage interest where possible.
There will be no storage of plant, materials or equipment against buildings, bridges, walls or fences.

With the above mitigation measures in place, it is anticipated that any cultural heritage effects associated with the proposed scheme are unlikely to be significant. This receptor is not considered further in this RoD.

Landscape and visual effects

The works are located within the boundaries of LLTNP and the Loch Lomond NSA and will involve the felling of trees infected by ramorum disease. The works will result in a localised, medium to long-term change to landscape character along this section of the A82 due to the removal of woodland. However, the felling is required to prevent the further spread of disease and to safeguard the integrity and continuity of surrounding woodland that is not affected. As such, while there will be alteration to landscape character, the works are anticipated to contribute to the long-term conservation and resilience of the landscape within both the LLTNP and the Loch Lomond NSA. Both the National Park Authority and NatureScot will be notified prior to commencement of the works.

In addition, there will be a short-term effect on landscape character and visual amenity arising from the presence of construction plant, vehicles and traffic management. However, the works are of limited duration, will be undertaken in two discrete phases, and will be confined to land owned by Transport Scotland and the Scottish Ministers.

In addition, the following mitigation measures will be put in place during works:

Throughout all stages of the works, the site will be kept clean and tidy, with materials, equipment, plant and wastes appropriately stored, minimising the landscape and visual effects as much as possible.
Advice from both the National Park Authority and NatureScot will be sought, and all recommendations received will be fully implemented as part of the works.
Tree felling and vegetation clearance will be kept to the minimum amount necessary to ensure the spread of the disease is controlled and safety of the trunk road is maintained.
Works will avoid encroaching on land and areas where work is not required or not permitted. This includes general works, storage of equipment/containers and parking.
Where applicable, upon completion of the works, any damage to the local landscape will be reinstated as much as is practicable.
The site will be left clean and tidy following construction.

With the above mitigation measures in place, it is anticipated that any landscape and visual effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Biodiversity

The scheme is located in proximity to the Loch Lomond Woods SAC, Loch Lomond SPA and Loch Lomond Ramsar site. Consequently, a pre-application consultation with NatureScot and an HRA Proforma, have been undertaken to determine the effects of the proposed works on the qualifying features of these European Sites. Consultation with NatureScot and HRA Proforma concluded that that the proposed activities would not result in LSE on all qualifying features of Loch Lomond Woods SAC, Loch Lomond SPA and Ramsar site.

Vegetation clearance will be strictly confined to the area specified within the SPHN. While the works will result in the loss of vegetation, they are not expected to cause fragmentation or disrupt ecological connectivity with the surrounding woodland habitat. The SPHN area represents a small proportion of the wider woodland, and therefore habitat for species of conservation concern will largely be retained. Furthermore, ecological surveys undertaken on 13 February 2026 did not identify any permanent shelter or resting sites for species of conservation importance within the SPHN area.

Activities undertaken on site could potentially cause temporary adverse effects on local biodiversity due to increased vehicle presence, noise, and the potential for disturbance to protected species or pollution of habitats. However, the works are confined to a narrow strip of land along the A82 carriageway, and the number of construction vehicles and personnel required is low relative to the scale and scope of the works. Species in the surrounding area are likely to be habituated to typical noise and visual disturbance associated with traffic along the A82. Furthermore, the works will progress sequentially along the carriageway, allowing mobile species to move away from the active works area. Undertaking the works in two discrete stages also provides an opportunity for species to adapt to temporary disturbance. Considering the ecological survey data, the constrained location of the works, and the limited duration, the potential for significant disturbance to species within the construction area is therefore assessed to be low.

Rhododendron is prevalent within the scheme extents which will be treated as per BEAR Scotland NW Landscape Management Plan.

Pollution controls and good practice measures to reduce impacts of works on the local environment will be detailed in the Site Environment Management Plan (SEMP) and adhered to on site. Therefore, with the following mitigation measures in place, the risk of significant impacts on biodiversity are considered to be low:

No in-water works will be permitted. Works will be strictly limited to areas required for access and to carry out the works. Unnecessary encroachment onto terrestrial or aquatic areas will not be tolerated.
Pre-works protected species checks, such as nesting birds, will be undertaken prior to the works commencing.
Clearance will be strictly confined to the SPHN area. Should any trees outside the SPHN be discovered to be infected during the works, this will be reported immediately and managed in accordance with Scottish Forestry guidance under a new SPHN (if deemed to be required).
Trees to be removed will be recorded so that compensatory planting can be carried out in an appropriate area in future.
All construction operatives will be briefed through toolbox talks prior to works commencing, which will be included in the SEMP. The toolbox talks will provide information on the legislation, general ecology, and best practice measures for relevant protected species.
Site personnel will remain vigilant for the presence of any protected species, throughout the works period. Should a protected species be noted during construction, works will temporarily halt until the species has sufficiently moved on. Any sightings of protected species will be reported to the BEAR Scotland Environmental Team.
Artificial lighting (where required) will be directed away from areas outside of immediate working area as far as is safe and reasonably practicable.
Where works are undertaken during the general bird breeding season (March to August inclusive), nesting checks will be carried out 2 weeks and again 48 hours prior to the commencement of works.
If an active bird nest (e.g., eggs or young present, adult sitting on nest) is identified on site, all works within 30m of the nest will stop until the BEAR Scotland NW Environment Team can provide advice.
A ‘soft-start’ will be implemented on site each day. This will involve switching on vehicles and checking under/around vehicles and the immediate work area for mammals prior to works commencing to ensure none are present and that there is a gradual increase in noise.
Any excavations, exposed pipes/drains, or areas where an animal could become trapped (e.g. storage containers) will be covered over when not in use, at the end of each shift, and following completion of the works to avoid animals falling in and becoming trapped.
If fencing is utilised at any point during the works, a gap of 200mm from ground level will be provided, allowing free passage for mammals and preventing entrapment.

With the above mitigation measures in place, it is anticipated that any biodiversity effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Geology and soils

The scheme is not located within a GCRS or geological SSSI. Although excavation is not required, the tree felling may result in localised and minor soil exposure or disturbance. The following measures will be applied on site:

Upon completion of the works, any damage to the local landscape will be reinstated as much as is practicable.
Mitigation measures to prevent contamination of soils through loss of containment will be strictly adhered to.
The parking of machinery/vehicles and storage of equipment on grass will be minimised as far as is reasonably practicable.
Additional pollution prevention measures as outlined in Road drainage and the water environment will be adhered to during construction.

With the above mitigation measures in place, it is anticipated that any geology and soils effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Material assets and waste

The main waste will consist of vegetation arisings which are to be disposed of in a licenced waste facility as per SPHN. Timber not affected by the disease may be left in a biodiversity pile within the scheme extents. However, there is potential for impacts as a result of resource depletion through use and transportation of new materials used to facilitate the works, such as fuels and oils. Though, materials will be sourced locally where possible and the following mitigation measures will be put in place:

Equipment and machinery will be sourced from recycled origins as far as reasonably practicable within the design specifications.

There is potential for impacts during works as a result of the improper storage or disposal of waste. The following mitigation measures will be put in place:

Felled vegetation material not affected by disease will be disposed of appropriately in line with the NW NMC (Schedule 5, Appendix 0/1, 3010SR Maintenance of Established Trees and Shrubs).
Any trees exceeding 5m³ that fall outside the scope of the SPHN, if felled on third-party land, will require a separate felling licence from Scottish Forestry.
The waste hierarchy (Reduce, Reuse, Recycle and Dispose) will be employed throughout the construction works.
The subcontractor will adhere to waste management legislation and ensure they comply with their Duty of Care.
Containment measures will be in place to prevent debris or pollutants from entering the surrounding environment.
All wastes and unused materials will be removed from site in a safe and legal manner by a licensed waste carrier upon completion of the works. The appointed waste carrier will have a valid SEPA waste carrier registration, a copy of which will be provided to and retained by BEAR Scotland as early as possible.
All appropriate waste documentation will be present on site and be available for inspection. A copy of the Duty of Care paperwork will be produced and filed appropriately in accordance with the Code of Practice (as made under Section 34 of Environmental Protection Act 1990 as amended).
Re-use and recycling of waste will be encouraged, and the subcontractor will be required to fully outline their plans and provide documentary evidence for waste arising from the works (e.g., waste carrier’s licence, transfer notes, and waste exemption certificates).
Staff will be informed that littering will not be tolerated. Staff will be encouraged to collect any litter seen on site.
Where applicable, all temporary signage will be removed from site on completion of the works.

With the above mitigation measures in place, it is anticipated that any material assets and waste effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Noise and vibration

Construction activities associated with the proposed scheme have the potential to generate noise and vibration from the use of plant, machinery, and construction vehicles. However, the works are not located within a CNMA, and the proximity to the A82 carriageway means that local residents are likely to have a degree of tolerance to typical road-related noise and disturbance. The works will be undertaken in two phases, with Phase 1 lasting up to three nights and Phase 2 approximately two weeks. Activities with the potential to produce worst-case noise and vibration impacts will be intermittent, temporary, and short-lived. In addition, properties near the scheme are screened from the works by intervening woodland. Given the short duration, localised nature, and transient character of the works, noise impacts are anticipated to be temporary and of minor significance.

The following mitigation measures will be put in place:

Local residents which are affected by the works will be notified in advance of the works, likely by a letter drop, which will contain details of the proposed timings and duration of the works, in addition to contact details for the Site Supervisor.
The local authority Argyll and Bute Environmental Health Officer (EHO) will be notified of the works.
Where possible, noisy activities will be completed by 23:00.
The Best Practicable Means, as defined in Section 72 of the Control of Pollution Act 1874, will be employed at all times to reduce noise to a minimum. On-site construction tasks will be programmed to be as efficient as possible, with a view to limiting noise disruption to local sensitive receptors.
All site staff will receive the ‘Being a Good Neighbour’ toolbox talk.
All site personnel will be fully briefed in advance of works regarding the need to minimise noise during works and of the site-specific sensitivities.
Drop heights from vehicles and NRMM will be kept to a minimum to minimise noise when unloading.
All plant, machinery and vehicles will be switched off when not in use.
All plant will be operated in such a way that minimises noise emissions and will have been maintained regularly to the appropriate standards.
Where fitted, and where permitted under Health and Safety requirements, white noise reversing alarms will be utilised during construction.
Where ancillary plant such as generators are required, they will be positioned so as to cause minimum noise disturbance. Where deemed necessary, acoustic screens will be utilised.

With the above mitigation measures in place, it is anticipated that any noise and vibration effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Population and human health

During construction, activities undertaken on site have the potential to have temporary adverse impacts on local residents, vehicle travellers, and NMUs. TM will utilise off-peak full A82 closure with amnesties. Access to emergency vehicles and NMU facilities which lie within 300m of the schemes will be maintained.

Properties nearest to the scheme lie 210m from the works and are screened by woodland. However, the works are undertaken during the nighttime hours which may disrupt local residents.

With the following mitigation measures in place, the risk of significant impacts on population and human health is considered to be low:

The works schedule and any changes to this will be communicated to local residents prior to and throughout the programme.
Construction lighting will consider the need to avoid illuminating surrounding environment and properties to avoid a nuisance at times of low light levels, and non-essential lighting will be switched off.
Local access will be granted as required.
Appropriate provisions / measures will be implemented within the traffic management to allow the safe passage of NMUs of all abilities through the site.
Journey planning information will be available for drivers online at the trafficscotland.org website. Journey planning information will also be available for drivers online through BEAR’s social media platforms.

With the above mitigation measures in place, it is anticipated that any population and human health effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Road drainage and the water environment

There is potential for temporary impacts on the water environment due to operation of plant within and within proximity to watercourses and/or drainage systems, which may lead to potential changes in water quality from pollution events (either by accidental spillage of sediments, particulate matter, chemicals, fuels or by mobilisation of these in surface water caused by rain).

No in-water works will take place and there is no requirement for the abstraction or transfers of water from, or discharges to, a waterbody. As such, the potential for a direct pollution incident within a waterbody is unlikely. Experience gained from BEAR maintenance schemes elsewhere on the network has shown that where standard good working practice is adopted (e.g., adherence to SEPA good practice guidance, utilisation of drain covers or similar, etc.), water quality is protected.

The works may result in potential direct or indirect effects on surrounding waterbodies. The following mitigation measures will be put in place to reduce the risk of pollution incidents as a result of works:

No work has been identified that would require entering any surface waterbodies. If such a need were identified onsite, BEAR Scotland’s Environmental Team will be contacted (before the works commence) to allow consideration of potential environmental effects.
Standard working practices to comply with the Environmental Authorisations (Scotland) Regulations 2018 (EASR) for works in or near water will be detailed in the SEMP and adhered to on site.
No discharges into any watercourses or drainage systems will be permitted. Appropriate containment measures will be in place to prevent any loss of construction materials into the water environment.
Chipping (if required) will be conducted at least 10m away from watercourses, drains and waterbodies. If left on site, chippings and habitat piles will remain 10m away from any watercourse, drain or waterbody
Appropriate measures will be implemented during vegetation removal works to limit the potential for wastes and materials (i.e., vegetation arisings) to enter any gullies present on site. On completion of works, any gullies present on site will be visually checked to ensure they have not become blocked as a result of the scheme.
An incident response (contingency) plan will be put in place to reduce the risk from pollution incidents or accidental spillages. All necessary containment equipment, including suitable spill kits (for oil and chemicals) will be available on site, quickly accessible if needed, and staff trained in their use.
All spills will be logged and reported. In the event of any spills into the water environment, all works will stop, and the incident will be reported to the project manager and the BEAR Scotland Environmental Team. SEPA will be informed of any such incident as soon as possible using the SEPA Pollution Hotline.
All plant and equipment will be regularly inspected for any signs of damage and leaks. A checklist will be present to make sure that the checks have been carried out.
Storage of hazardous material, oil and fuel containers will be distanced more than 10m away from any watercourses.
If required, a designated refuelling area will be identified. Fuel bowsers will be stored on an impermeable area and be fully bunded. This will be distanced more than 10m from any watercourses.
During refuelling of smaller mobile plant, a funnel will be used, and drip trays will be in place. Care will be taken to reduce the chance of spillages. Spill kits will be quickly accessible to capture any spills should they occur. The ground/stone around the site of a spill shall be removed, double bagged and taken off site as special contaminated waste.
Generators and static plant may have the potential to leak fuel and/or other hydrocarbons and will have bunding with a capacity of 110%. If these are not bunded then drip trays will also be supplied beneath the equipment with a capacity of 110%.

With the above mitigation measures in place, it is anticipated that any road drainage and the water environment effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Climate

Activities associated with the proposed scheme works have the potential to cause local air quality impacts as a result of the emission of greenhouse gases through the use of vehicles and machinery, material use and production and transportation of materials to and from site. Although works will involve removal of a large number of trees, the majority are of a small size, and the impact on climate and local carbon storage is considered minimal. Additionally, trees to be felled will be recorded to inform future compensatory planting, which will help offset any loss of carbon storage resulting from the scheme. The following mitigation measures will be put in place:

BEAR Scotland will adhere to its Carbon Management Policy.
All mitigation measures detailed within ‘Air Quality’ and ‘Material Assets and Waste’ will be adhered to.
Local contractors and suppliers will be used as far as practicable to reduce fuel use and greenhouse gas emitted as part of the works.
Where possible, materials will be sourced locally to reduce greenhouse gas emissions associated with materials movement, and waste will be removed to a local facility, where required.

With the above mitigation measures in place, it is anticipated that any climate effects associated with the proposed works are unlikely to be significant. This receptor is not considered further in this RoD.

Vulnerability of the project to risks

Areas within the scheme extents are recorded as being at high likelihood (e.g., each year this area has 10% likelihood of flooding) of surface water (and small watercourse) flooding each year. Works will be programmed as far as is reasonably practicable to avoid periods of adverse weather or heavy rainfall.

TM will utilise off-peak full A82 closures with amnesties. In addition, diversion route will be in place. Local residents will be notified of working hours and provided with appropriate contact information. Emergency vehicles and pedestrians or other NMUs will be accommodated within the traffic management setup. Considering the above the potential risk of impact to local road users is considered to be low.

A Traffic Management Plan (TMP), which includes measures to avoid or reduce disruption to road traffic, will be produced in accordance with the Traffic Signs Manual (Department of Transport 2009). The TMP will ensure that there is no severance of community assets, access routes or residential development.

The works are expected to deliver a beneficial outcome for both road users, by reducing the risk of tree failure adjacent to the carriageway. As the works will be limited to removal of trees along the A82 carriageway, there is no change to the vulnerability of the road to the risk or severity of major accidents/disasters that would impact the environment.

These measures along with mitigation measures and standard working practices will be detailed in the SEMP and adhered to on site. The vulnerability of the project to risks of major accidents and disasters is considered to be low.

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