HDD the environmental choice

The proposed project includes the construction of a 42 inch diameter gas transmission pipeline from the Surat and Bowen basins to a proposed LNG processing site located at Laird Point on Curtis Island, Gladstone.

The pipeline component comprises two lateral pipelines, 44 kilometres and 38 kilometres in length, connecting the Condabri and Woleebee developments, respectively, with the main pipeline. Beginning east of Wandoan at the junction of the two lateral pipelines, the main pipeline extends 362 kilometres north, veering east during the latter stages, with a marine crossing at The Narrows to arrive at the LNG facility.

Crossing the Narrows has two distinct sections – an inter-tidal and sub-tidal land section; and an open marine section. Each will be crossed using different methods.

APLNG considered many alternative methods for crossing the marine section of The Narrows, with HDD being the preferred method because the potential impacts are confined to the shoreline construction areas where workspace is required to set up the drilling rig and pipe-string. The pipe is then pulled into place through a hole drilled under the sea bed, then tied into the rest of the pipeline or capped awaiting the tie-in.

The State Department of Infrastructure and Planning will manage the Environmental Impact Statement (EIS) process on behalf of the Coordinator-General.

Public consultation will be held at venues around Queensland from 13 April 2010.

The EIS, prepared on the basis of the maximum potential size of the project, will be available in full from 29 March 2010. Submissions to the Coordinator-General can be made up until 4 May 2010.

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