Redruth Landfill Cell 2.3 & 2.4 LFG & Capping Works 2023/2024
Tender ID: 544353
Tender Details
Tender Description
The Works comprise the Cells 2.3/2.4 landfill gas (LFG) system and associated final capping in accordance with the Drawings and this Specification. The work includes but is not limited to: Cell 2.3/2.4 Capping and LFG System
- Site clearance and removal of existing obstructions.
-Test pitting where required by the Engineer.
- Supply and install gas collection pipes trenched into the waste and existing cap material.
- Removal of existing solar spark flares from Stage 2 and construction of a new solar spark metal frame to allow for unit to be moved by existing Enviro NZ equipment (i.e. loader or excavator).
- Moving to final position gas collection and leachate pipelines from the existing leachate well and Stage 1 leachate riser pipeline.
- Relocate gas cross connector pipe to the crest of the landfill within the capping materials.
- Supply and install gas ring main.
- Excavate and place existing SW06 pipeline into a trench.
- Construction of leachate cleanout riser anchor block and gas connections.
- Supply, cart and construct compacted Clay Capping Layer.
- Cart Growth Medium from stockpile and place on compacted Clay Capping Layer.
- Supply, cart, and construct Topsoil layer on Growth Medium.
- Topsoil preparation and grassing.
- Clean up on completion.
Stage 3 leachate rising main pipeline
- Supply and install new leachate storage tank and associated connection.
Supply and install new alternative leachate rising main pipeline and associated connections.