Hunua 4 Pipe was a 1.6 to 2.0 metres diameter Pipeline running 32 kilometres ,installed running from Redout Road Manukau to Burleigh Street Grafton.
At the request of Watercare, SSD applied the latest technology Multi-Array GPR unit to help determine utilities at the site of what is one of Auckland oldest Reservoirs. This surveying was completed within very tight timeframes and the Stream C was applied afterhours within TMP to enable carriageway cover of both Burleigh Street and Khyber Pass.





