Friday, 30 July 2021, 1:42 pm People in the Whangaparāoa /Silverdale area may notice an uptake in activity over the coming weeks as we start geotechnical investigations which are critical in ensuring we protect the unique landscape surrounding the Penlink corridor when we begin construction in 2022. A helicopter will be used to carry special machinery into areas around the corridor where road access isn’t possible. “Ground conditions can have a significant impact on the scope and design of projects, which is why we are making sure we investigate every part of the proposed project site,” says Andy Thackwray Waka Kotahi National