TEP acted as an environmental adviser to Wales & West Utilities for a proposed replacement gas pipeline between Derwenlas and Tywyn within Eryri/Snowdonia National Park. We provided multidisciplinary support to the project from the early feasibility and development of the pipeline route through to installation. The type of development and the sensitive environment gave rise to potential for effects on sensitive ecological, arboricultural, heritage and landscape receptors, requiring an integrated and solution-focused approach.
Our Ecology team undertook Extended Phase 1 habitat surveys and Ecological Impact Assessment, supported by detailed surveys for bats, breeding birds, dormouse and otter. We developed mitigation strategies and secured protected species licences for multiple European Protected Species. During construction, our Ecological Clerk of Works provided on-site support to ensure compliance and maintain programme confidence.
Arboricultural input included tree surveys, constraints mapping, impact assessment and method statements to safeguard retained trees along the route.
Our Historic Environment team assessed the potential for effects on above and below ground heritage and archaeological assets which included the commissioning and interpreting of geophysical surveys of the route.
Our Landscape Assessment team reviewed the 14.8km route through the Eryri/Snowdonia National Park considering the effects of the underground pipeline installation on landscape features and views and providing recommendations in relation to routeing, installation, mitigation and reinstatement within this sensitive landscape. We also included input to the siting, design and assessment of an above ground Pressure Reduction Station.
Through coordinated environmental input, proactive risk management and strong licensing expertise we inputted into EIA Screening and the planning process. Our involvement continued through delivery, ensuring environmental commitments were translated into practical action on site during the installation of the pipeline and the subsequent reinstatement.
This project demonstrates our experience supporting complex infrastructure within protected landscapes, guiding projects from early assessment to construction, and balancing environmental responsibility with the successful delivery of essential National infrastructure.
