Installation of 1.3km of DN500 HDPE pipe in tidal areas, this included the welding of all pipe, pressure testing, management of ASS & PASS. Anchor blocks were cast to allow the pipe to be installed through 2 creeks, the anchor blocks were a two half clamp arrangement. ASS & PASS treatment pads were constructed so that the material could be treated and then reused for backfill material. All plant, equipment, sand and gravel had to be barged to the island and stockpiled prior to use on the project.