Corranure Landfill - Cell 2 Capping Contract | Cleantech Civils and P & S Civils

Corranure Landfill – Cell 2 Capping Contract

Client

Cavan County Council

February 2007 – May 2007

Duration

Background

Corranure Landfill is located approximately 3km North-East of Cavan Town.

It is located adjacent to the Cavan-Cootehill Road (R188), in the townlands of Corranure and Lismagratty.

The total footprint of the landfill covers an area of 11 hectares.

Scope of Work

This €700,000 project involved the installation of 55,000m2 uniaxial geogrids (on side slopes only), 80,000m2 of surface water drainage geo composite layer LLDPE liner and geo composite gas collection layer. The placement of 45,000m3 of subsoil and 15,000m3 of topsoil layers and finished with seeding. The works included extension of gas and leachate lines and upgrade of 25nr existing well heads.
The site works included the construction of a 650m haul road and provision of fencing and gates at the entrance to the cell. The work was carried out on an operational landfill site and all works were planned to segregate landfill and construction traffic and minimise impacts on landfill operations.

Challenges

Operating plant and equipment on the existing slopes of the landfill and profiling the slopes so the LDPE line and geo grid could be laid on a even surface. Due to the gradient of the slopes the excavators that we placing the subsoil were anchored to winches and heavy equipment to enable the work to be carried our safely.

The Outcome

The odour which was originally eminating prior to the works was successfully brought under control. The gas collection system has provided a route to the flares, which burn off the odours/gas thus improving the living environment for locals.