Global Synthetics Supplies Lining Systems to Protect Red Hill Landfill

Project snapshot

Situated on the fringe of the Perth metropolitan area within the Darling Escarpment, the Red Hill Waste Management Facility is an example of one of the more progressive and highly developed waste facilities in Australia.

Red Hill adopts the more modern principles of award-winning sanitary landfill design, including leachate collection and methane gas capture, which have enabled the site to maintain its operating status within the DEC (Department of Environment & Conservation) guidelines for the last 22 years.

Eastern Metropolitan Regional Council which owns and runs the facility designed the latest waste cell with stringent criteria in mind given its Class III classification.

How Global Synthetics supported this project

ProLiner® HDPE geomembrane

Farm Stage 1 incorporated a special ‘high asperity’ textured ProLiner® HDPE geomembrane enabling a higher friction coefficient on the steeper batters than standard textured liners.

Global Synthetics supplied over 50,000m2 of 2.00mm ProLiner HDPE geomembrane which can be custom manufactured to specific project parameters including high asperity, along with provisions for onerous chemical and UV requirements.

ProLiner’s 8m roll width also allows faster deployment and fewer longitudinal seaming than the more common HDPE liners in the market.

ProFab AS680 heavyweight geotextile

Paramount in all high profile lining applications is the use of a high-performance cushion geotextile. Farm Stage 1 incorporated ProFab AS680 heavyweight geotextile which carries a minimum of 600g/m2 of nonwoven fibre, designed to protect the ProLiner HDPE from the underlying coarse subgrade and overlying fill material.

ProFab® cushion geotextiles are needled with staple fibre to produce a tightly oriented structure. Independent tests have proven that these higher density geotextiles perform better than the looser structured geotextiles under puncture and compression loads which are typical in cushioning applications.

ProFab AS680 was also utilised as a filter and separation layer for the lateral leachate collection channels at the base of the cell. The dense fibre structure of ProFab enables superior fines retention whilst still allowing a generous permeability due to its staple fibre orientation.

The principal contractor and specialist lining installer delivered the Farm Stage 1 scope to its client on time and on budget. For more information on this project or to find out more about our product range for landfill applications, contact the team at Global Synthetics.