AN application has been lodged for a $49 million upgrade to the SITA advanced waste treatment plant in Kemps Creek.
If approved, it will result in an increased capacity of 220,000 tonnes of waste being processed there every year.
It currently processes 120,000 tonnes of waste a year, including general solid waste and organic waste, and an additional 14,400 tonnes of bio-solids from sewerage treatment plants.
The waste comes from councils including Penrith, Campbelltown, Camden, Wollondilly, Wingecarribee, Liverpool and City of Sydney.
There is 46,000 tonnes of general solid waste coming from Liverpool and Penrith councils alone.
The expansion would also include an increase in indoor operating hours to 24 hours a day, seven days a week.
It would also include a new pre-treatment line, maturation hall, refinery machinery and the re-configuration of biofilters.
The application submitted by SITA said there would be an estimated 75 jobs generated during construction and another 20 full-time equivalent operational jobs.
When the environmental impact statement is lodged it will be placed on public exhibition.
Any submissions made will be considered and then the Planning Minister will make a decision.