Beddington Farmlands Landfill Site: Difference between revisions

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The previous use of the site was as a sewage farm associated with the adjoining sewage treatment plant. Sewage farms comprise areas of land used to process and treat sewage sludge to manufacture a soil fertiliser product. They were more commonly used in the 19th and early 20th century than they are nowadays.

Planning permission for mineral extraction and restoration by landfilling was granted in 1995 on appeal, site works commenced in 1998. This planning permission envisaged completion of landfilling by 2015. A subsequent application sought to extend the life of the site until 2023.

The Waste Management Licence was changed to an Environmental Permit in 2003/4 as required by the changing legislation at the time.

The capacity at the site as originally granted Planning Permission was circa xxxx cubic metres; this was subsequently increased upon approval of a revised Landfill Surcharge Allowance and set of Landfill Settlement Contours to around yyy cubic metres.

The ~~Waste Management Licence was changed to an Environmental Permit in 2003/4 as required~~ by the ~~changing legislation at~~ the ~~time~~.

==Geology==

The site is underlain by Quaternary-aged sands and gravels of the Hackney Gravel Member. These deposits are underalin by the London Clay Formation, which succesively is underlain by the Lambeth Group (sands, silts and clays), the Thanet Sand Formation and the Upper Chalk. The latter two are classified as Principal Aquifer, whilst the Lambeth Group is considered to be in hydraulic continuity with these.

~~The capacity~~ at the site ~~as originally granted Planning Permission~~ was ~~circa 2~~,~~500,000 cubic metres; this was subsequently increased upon approval~~ of ~~a revised Landfill Surcharge Allowance and set of Landfill Settlement Contours~~ to ~~around 3,800,000 cubic metres~~.

Mineral extraction at the site was principally the sands and gravels of the Hackney Gravel Member. In addition, clays of the London Clay were worked to provide engineering materials at the site.

~~Geology~~

==Engineering and Environmental Controls==

The ~~quarry~~ is ~~excavated into Triassic age Budleigh Salterton Pebble Beds. These constitute~~ a ~~Principal Aquifer, although due to the morphology~~ of the ~~deposit~~, ~~locally they are not water-bearing to any~~ significant ~~degree. The Pebble Beds are underlain by clays~~ of the ~~Keuper Marl~~.

The morphology of the site is a shallow landfill over most of the site area, with significant proportion of the void derived from landraise superimposed on the landfill.

~~Engineering and Environmental Controls~~

The landfill is constructed as a Containment Facility, utilizing the underlying 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 sidewalls.

The landfill is constructed as a Containment Facility, utilizing the underlying 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 30 meter deep quarry~~.

There is Landfill Gas power generation with electricity export to the National Grid. Installed capacity is 4.~~89MW~~. [1]

There is Landfill Gas power generation with electricity export to the National Grid. Installed capacity is 5.05W. [1]

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 discharge leachate to the local sewerage system which discharges to the adjoing sewage tretament works. In 2019, it was proposed to install a methane stripping plant to pre-treat the leachate prior to discharge.

Other Infrastructure

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 The previous use of the site was as a sewage farm associated with the adjoining sewage treatment plant. Sewage farms comprise areas of land used to process and treat sewage sludge to manufacture a soil fertiliser product. They were more commonly used in the 19th and early 20th century than they are nowadays.
+Planning permission for mineral extraction and restoration by landfilling was granted in 1995 on appeal, site works commenced in 1998. This planning permission envisaged completion of landfilling by 2015. A subsequent application sought to extend the life of the site until 2023.
+The Waste Management Licence was changed to an Environmental Permit in 2003/4 as required by the changing legislation at the time.
+The capacity at the site as originally granted Planning Permission was circa xxxx cubic metres; this was subsequently increased upon approval of a revised Landfill Surcharge Allowance and set of Landfill Settlement Contours to around yyy cubic metres.
-The Waste Management Licence was changed to an Environmental Permit in 2003/4 as required by the changing legislation at the time.
+==Geology==
+The site is underlain by Quaternary-aged sands and gravels of the Hackney Gravel Member. These deposits are underalin by the London Clay Formation, which succesively is underlain by the Lambeth Group (sands, silts and clays), the Thanet Sand Formation and the Upper Chalk. The latter two are classified as Principal Aquifer, whilst the Lambeth Group is considered to be in hydraulic continuity with these.
-The capacity at the site as originally granted Planning Permission was circa 2,500,000 cubic metres; this was subsequently increased upon approval of a revised Landfill Surcharge Allowance and set of Landfill Settlement Contours to around 3,800,000 cubic metres.
+Mineral extraction at the site was principally the sands and gravels of the Hackney Gravel Member. In addition, clays of the London Clay were worked to provide engineering materials at the site.
-Geology
+==Engineering and Environmental Controls==
-The quarry is excavated into Triassic age Budleigh Salterton Pebble Beds. These constitute a Principal Aquifer, although due to the morphology of the deposit, locally they are not water-bearing to any significant degree. The Pebble Beds are underlain by clays of the Keuper Marl.
+The morphology of the site is a shallow landfill over most of the site area, with significant proportion of the void derived from landraise superimposed on the landfill.
-Engineering and Environmental Controls
+The landfill is constructed as a Containment Facility, utilizing the underlying 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 sidewalls.
-The landfill is constructed as a Containment Facility, utilizing the underlying 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 30 meter deep quarry.
-There is Landfill Gas power generation with electricity export to the National Grid. Installed capacity is 4.89MW. [1]
+There is Landfill Gas power generation with electricity export to the National Grid. Installed capacity is 5.05W. [1]
-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 discharge leachate to the local sewerage system which discharges to the adjoing sewage tretament works. In 2019, it was proposed to install a methane stripping plant to pre-treat the leachate prior to discharge.
 Other Infrastructure