The manual outlines our requirements for best practice constructed wetland design, to support consistent delivery of high-quality constructed wetlands across the Port Phillip and Westernport region.

This describes the structural design requirements for drainage systems. It includes details on pipe drains and associated concrete structures.

Additional factors which should be considered during the preparation of the design include:

'As constructed' information for underground pipelines can be difficult to obtain due to the nature of Works involved

Loss coefficient for pits and junctions

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All plans for drainage works must be available in CAD, PDF and hard-copy formats at a scale drawn relevant to an A1 size plot of the drawing. The drawing must contain borders and title blocks that comply with our requirements.

Examples of notes which may be required on the drainage design plans.

Summary of changes to LDM Section 6.0 Construction Specifications, Nov 2009 6.2.1

These standards have been developed by Statewide River & Stream Management as part of the training notes for our Site Environmental Awareness Training (SEAT) for contractors