Environmental Management for High Voltage Substation Development in Kintore

Arthian has been supporting a major multi-phase construction project for the development of a high voltage electricity substation in Kintore, part of a strategic reinforcement of overhead line infrastructure along Scotland’s east coast. Since the project began in 2021, Arthian has played a key role in environmental management on behalf of the Principal Contractor.

The site presented a range of environmental challenges due to its scale, ecological sensitivity, and operational complexity. Arthian initially undertook the on-site Environmental/Ecological Clerk of Works (ECoW) role, which has since been subcontracted under Arthian’s continued oversight.

A significant challenge was the need to produce and regularly update Construction Environmental Management Plans (CEMPs) for each phase of development. These plans were written in accordance with the Decision Notice and adapted at key stages to reflect evolving site conditions and construction activities.

Ecological sensitivities also required careful management. A badger sett located within 30 metres of the CDM area prompted the erection of a temporary exclusion zone and the acquisition of a disturbance licence from NatureScot. A permanent exclusion zone was later established to prevent future disruption.

Heavy rainfall and extensive earthworks early in the project raised concerns about silt-laden surface water entering nearby watercourses. Arthian specified and oversaw the installation of mitigation measures including check-dams, straw bales, sedi-mats, silt fences, and settlement ponds to manage runoff and protect local water quality.

Arthian’s environmental management extended to addressing hydrocarbon pollution, a legacy issue due to the site’s historical use as a substation. During drainage excavation, hydrocarbons were observed in surface waters. Arthian responded by conducting a geo-environmental investigation, progressing boreholes and collecting soil and groundwater samples for chemical analysis.

The results provided the client with a detailed understanding of subsurface conditions and identified potential pollution sources. This enabled targeted management strategies to be implemented, reducing environmental risk and ensuring regulatory compliance.

Through proactive planning, ecological sensitivity, and technical expertise, Arthian has helped ensure the safe, compliant, and sustainable delivery of this nationally significant infrastructure project.