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Optimised Development Footprint

Under the original Project design, the development would have potentially affected the upper reaches of a drainage line that runs across the southern end of the site (see figure below). This drainage eventually feeds into the Wollongambe River.

Sydney Construction Materials is committed to safeguarding the high quality of water that flows into this important river, and subsequently amended its development plan to ensure that there will be no uncontrolled untreated discharges into this drainage. It is proposed that prior to the commencement of Stage 2 of the development, the flow of water into this drainage will be diverted around the southern end of the development and back into the drainage, ensuring continuity of supply. Any surface water outside the area of the development draining towards the western edge of the development will also be directed around the southern end and into this southern drainage.

This drainage also contains plant species that show some affinity for the Newnes Plateau Shrub Swamp (NPSS), a community for which protection under the Environmental Protection and Biodiversity Act 1999 (Cth) was recently granted. Although not true NPSS (it does not contain some of the required dominant species, and does contain other non-"shrub swamp" species, thereby excluding its classification under this nomenclature), Sydney Cronstruction Materials nevertheless believes that it is an important environment, and as such, amended the development plan to ensure its protection. The measures taken, as described above, will ensure the safety and integrity of this area.

On the left-hand side of the above figure, the southern drainage can be seen at the bottom of the picture, cutting across the site from east to west (end of Stage 1 - year 5). On the right-hand side of the above (end of Stage 2 - year 10), the new course of the southern drainage can be seen diverted around the southern end of the site and back into its original course.

Further details on water management, and in particular the diversion of the southern drainage, can be found in the Surface Water Management Plan (Hughes Trueman, 2004) (231 kB pdf) and the Soil and Water Management Plan (GSS Environmental, 2004) (1,741 kB pdf) in the Supplementary Information section under Project Credentials.