State Environmental Planning Policy (Transport and Infrastructure) 2021

Excavation must be structurally sound.

Excavation must not be carried out—

more than 1m below ground level (existing), for land identified as “Class 3” or “Class 4” on an Acid Sulfate Soils Map, or

more than 3m below ground level (existing), for other land.

Excavation on land not specified in subsection (2) must not be more than 3m below ground level (existing).

Excavation must be—

carried out at least 40m from a waterbody (natural), and

if carried out on a lot adjacent to a rail corridor—set back at least 3m from the corridor.

Fill must—

not raise the ground level (existing) more than 2m, and

be structurally sound, and

be located at least 40m from a waterbody (natural).

Excavation and fill are structurally sound for subsections (1) and (5)(b) if the earthworks have structural support that—

has been certified as structurally sound by a professional engineer, including in relation to the ability to withstand the forces of lateral soil load, and

has adequate drainage lines connected to an existing stormwater drainage system for the site, and

does not redirect the flow of water or cause sediment to be transported onto an adjoining property, and

is not higher than 3m.