Land use and Planning

This section contains information about environmentally managing land use and planning.  For more information please click on the following highlighted links:


Acid sulphate soils

As with salinity, the soils in Western Sydney are potential Acid Sulphate Soils (ASS) due to their nature and formation.  They are also directly affected by development.

Acid sulphate soils are widespread in our estuarine floodplains and coastal lowlands (including mangrove tidal flats, salt marshes and tea-tree swamps).  At this stage, they are termed potential acid sulphate soils.  Actual acid sulphate soils are formed when the naturally occurring iron sulphides (pyrite) in the soil become exposed to air (through drainage or excavation) and subsequently oxidise, forming sulphuric acid.

It has been estimated that actual ASS generate 50,000 tonnes of acid in NSW every year as a direct result of past over-drainage for agricultural activity and urban development in coastal, urban and rural areas.  This has caused $2.2 - $23 million annually damage to the State's fishing industry alone, not to mention the effect it has had on agriculture, tourism and the environment.


Erosion and sediment control policy

 

The purpose of this policy is to plan erosion and sediment control guidelines to be used during the engineering design process and in advance of any works.  A copy can be downloaded.


Salinity

Salinity can potentially affect almost all of the Liverpool area.  It can result in the death of vegetation, affecting trees, gardens, lawns and playing fields.  It can also damage bricks, concrete, roads and buildings. What is salinity?

Salinity is often the result of changes in the way the land is used, which alters the way water moves through the environment.

Salt that is normally stored in the soil and rocks can be dissolved and carried to the surface by the increased water used in residential areas.  When the water evaporates, the salt is left behind and concentrates over time.  The salt can build up to a level that causes damage.  

The type of damage will depend on which type of salt thst is in the soil (such as sulphates or chlorides).  Salt is also added from leaking pipes, stormwater, sewage pipes and watering gardens and playing fields. What is Council doing about salinity?

Liverpool City Council has been an active participant in the development of the Western Sydney Salinity Code of Practice, which is a detailed management strategy for urban salinity.  Based on this Code of Practice, Council is developing a Development Control Plan for salinity. 

While the DCP is being composed, development applications are assessed for salinity hazard and conditioned accordingly.  Large new release areas and developments are required to undertake detailed geotechnical studies including salinity testing.

There is also a NSW Salinity Strategy.  This is reported by the NSW Premier's Office each year, and is for download from the Department of Natural Resources. Smart growth 

The Smart Growth approach is used to guide master planning and the delivery of urban development in Liverpool. The aim of Smart Growth is to stem urban sprawl and to create healthy and vibrant communities through the integration of economy, the community and the environment.