Sutherland Shire Local Environmental Plan 2015

Fill must not be more than 0.6m above ground level (existing).

Fill, for the purpose of erecting a new dwelling house, must be contained within the footprint of the dwelling house.

The maximum depth of an excavation below ground level (existing) is as follows—

if within 1m of a property boundary—0.3m,

if 1m or more from the closest property boundary—0.6m,

if within the footprint of a swimming pool—

2m, or

1m, if the land is identified as class 3 or class 4 on the Acid Sulfate Soils Map or within 40m of a waterbody (natural).

Fill more than 150mm above ground level (existing) must not cover more than 50% of the landscaped area of a lot.

If the fill is imported to the site—be free of building and other demolition waste, and only contain virgin excavated natural material (VENM) as defined in Part 3 of Schedule 1 to the Protection of the Environment Operations Act 1997.

If fill is to be placed on fill that was previously placed on land under this clause, a reference in this clause to ground level (existing) is the ground level (existing) immediately before any fill was placed on the land under this clause.

Natural rock outcrops greater than 5m² in area must be retained on any lot on which development is carried out.

Earthworks must be contained by a retaining wall or structural support.

The retaining wall or structural support—

must not be more than 1.2m high, measured vertically from the base to its uppermost portion, and

must be at least 1.5m from each property boundary, and

if more than 0.6m high, must be certified as structurally sound by a professional engineer, including in relation to (but not limited to) the ability to withstand the forces of lateral soil load, and

must have adequate drainage lines connected to the existing stormwater drainage system for the site, and

be designed so as not to redirect the flow of any surface water or ground water, or cause sediment to be transported, onto an adjoining property, and

must be separated from any retaining wall existing building foundations or other structural support on the site by at least 2m, measured horizontally, and

must be installed in accordance with any manufacturer’s specifications, and

if the structural support is a sloping embankment or batter—

must not have a slope of more than 20^o from horizontal, and

must include erosion protection and soil stabilisation measures to permanently hold the slope in place.