Arch Engineers took a challenging scope of work to explore the sheet-pile isolation of a salmon-bearing river. This facilitated the excavation of the riverbed for pipe installation rather than tunneling. This project involved significant environmental challenges, stringent regulatory requirements, and intense schedule pressure from owners, contractors, and other stakeholders. Our goal was to ensure the protection of the delicate river ecosystem while meeting all project demands efficiently and effectively. We worked with Coastal Gaslink.
Additionally, the project required planning and coordination with multiple federal ministries and regulatory bodies to ensure compliance with environmental protection standards for the Endako. Heavy sheet piles were specified to create an isolated section of the riverbed. A crane pad was designed on both embankments with a sufficient operating radius to facilitate the installation. Furthermore, the design included two channels for pumping water over the walls, allowing for effective dewatering between the sheet piles. This setup enabled the safe and dry excavation of the riverbed for the pipe installation, mitigating the impact on the salmon habitat.
One of the significant constraints was the need to balance environmental protection with project schedule pressures for Coastal Gaslink. Arch Engineers worked closely with all stakeholders to adhere to the intended timeline without compromising regulatory compliance. Our designs met the requirements of several regulatory bodies, ensuring that the project’s environmental impact was minimized. Through this approach, Arch Engineers successfully navigated the complex challenges of this project. This demonstrated our expertise in delivering environmentally sensitive and technically demanding engineering solutions.