Lean Quarry Landfill Site: Difference between revisions
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Lean Quarry landfill was granted [[Planning_Permission|planning permission]] in 2002 by Cornwall County Council. At the time, the site was owned and operated by Roseland Plant Hire Limited who were acquired by [[Viridor]] later in 2002. An [[Environmental Permit|environmental permit]] for the site was granted in 2003 and construction of the site commenced thereafter. | Lean Quarry landfill was granted [[Planning_Permission|planning permission]] in 2002 by Cornwall County Council. At the time, the site was owned and operated by Roseland Plant Hire Limited who were acquired by [[Viridor]] later in 2002. An [[Environmental Permit|environmental permit]] for the site was granted in 2003 and construction of the site commenced thereafter. | ||
Geology | ==Geology== | ||
The quarry is excavated into Devonian and Carboniferous deposits comprising basalt pillow lavas extruded on to slate and siltstone country rocks. These are defined by the Environment Agency as a Secondary Aquifer, although due to the lithology, locally they are not water-bearing to any significant degree. | The quarry is excavated into Devonian and Carboniferous deposits comprising basalt pillow lavas extruded on to slate and siltstone country rocks. These are defined by the Environment Agency as a Secondary Aquifer, although due to the lithology, locally they are not water-bearing to any significant degree. | ||
Engineering and Environmental Controls | ==Engineering and Environmental Controls== | ||
The landfill is constructed as a Containment Facility, utilizing the re-worked siltstone and slate derived clay materials as the principal barrier. The landfill lining system is augmented with a flexible membrane liner of High Density Polyethylene (HDPE) on the base and the lower part of the sidewalls. The sidewalls are steeply graded and required buttressing to enable construction within the 40+ metre deep quarry. | The landfill is constructed as a Containment Facility, utilizing the re-worked siltstone and slate derived clay materials as the principal barrier. The landfill lining system is augmented with a flexible membrane liner of High Density Polyethylene (HDPE) on the base and the lower part of the sidewalls. The sidewalls are steeply graded and required buttressing to enable construction within the 40+ metre deep quarry. | ||
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Viridor have been unable to secure a connection to the local sewerage system, principally due to a lack of local treatment capacity at the receiving Sewage Treatment Works. Consequently, Leachate produced by the site is removed by tanker to appropriately permitted Sewage Treatment Works. | Viridor have been unable to secure a connection to the local sewerage system, principally due to a lack of local treatment capacity at the receiving Sewage Treatment Works. Consequently, Leachate produced by the site is removed by tanker to appropriately permitted Sewage Treatment Works. | ||
Other Infrastructure | ==Other Infrastructure== | ||
Elsewhere within the quarry complex, Viridor also developed a [[Materials Recovery Facility]] to deal with locally derived recyclable waste streams. This facility was covered by the same planning consent as the landfill. | Elsewhere within the quarry complex, Viridor also developed a [[Materials Recovery Facility]] to deal with locally derived recyclable waste streams. This facility was covered by the same planning consent as the landfill. | ||