Landfill: Difference between revisions

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As the waste mass decomposes, the fill material settles under its own weight to occupy less volume. This process is known as '''settlement'''. ~~The filling~~ of the ~~filling of~~ the site ~~is designed to achieve pre-agreed finals levels~~. ~~These levels are agreed with~~ the ~~Planning Authority~~ and ~~it is usual~~ to ~~agree two sets of levels - one~~ that ~~represents~~ the levels after the majority of the settlement ~~has taken place and the other at an elevated level intended~~ to ~~represent teh level to which waste will be placed prior to settlement taking place. The difference between~~ the ~~two sets of~~ levels is known as ~~'''surcharge'''~~.

As the waste mass decomposes, the fill material settles under its own weight to occupy less volume. This process is known as '''settlement'''.

Landfill Settlement Contours are the levels to which a surcharged landfill can filled.

Landfill sites operate under the terms of a Planning Permission. Amongst the matters controlled by the permission will be the final levels to which the site must be restored. As the waste ages and decomposes the final level will settle to a lower level. In order to ensure that the agreed final levels are achieved after the majority of the decomposition and related settlement have finished, it is common to agree that the final levels can be exceeded initially - known as surcharging.

Landfill Settlement Contours are the levels to which a surcharged landfill can filled.

The degree of surcharging permitted is agreed as a [[Landfill Surcharge Allowance]]. This figure is usually quoted as a percentage which relates to the depth of the site at each point. The percentage agreed between the planning authority and the developer will vary according to the nature of the waste accepted, the depth of fill and the morphology of the landfill void.

It is conventional to have two sets of contours agreed with the planning authority - pre-settlement and post-settlement. The latter represent the level to which the site can be surcharged, the latter represent the levels to which the site will settle. The post-settlement contours are sometimes also known as final levels.

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-As the waste mass decomposes, the fill material settles under its own weight to occupy less volume. This process is known as '''settlement'''. The filling of the filling of the site is designed to achieve pre-agreed finals levels. These levels are agreed with the Planning Authority and it is usual to agree two sets of levels - one that represents the levels after the majority of the settlement has taken place and the other at an elevated level intended to represent teh level to which waste will be placed prior to settlement taking place. The difference between the two sets of levels is known as '''surcharge'''.
+As the waste mass decomposes, the fill material settles under its own weight to occupy less volume. This process is known as '''settlement'''.<br>
-Landfill Settlement Contours are the levels to which a surcharged landfill can filled.
+Landfill sites operate under the terms of a Planning Permission. Amongst the matters controlled by the permission will be the final levels to which the site must be restored. As the waste ages and decomposes the final level will settle to a lower level. In order to ensure that the agreed final levels are achieved after the majority of the decomposition and related settlement have finished, it is common to agree that the final levels can be exceeded initially - known as surcharging.<br>
+Landfill Settlement Contours are the levels to which a surcharged landfill can filled.<br>
+The degree of surcharging permitted is agreed as a [[Landfill Surcharge Allowance]]. This figure is usually quoted as a percentage which relates to the depth of the site at each point. The percentage agreed between the planning authority and the developer will vary according to the nature of the waste accepted, the depth of fill and the morphology of the landfill void.<br>
 It is conventional to have two sets of contours agreed with the planning authority - pre-settlement and post-settlement. The latter represent the level to which the site can be surcharged, the latter represent the levels to which the site will settle. The post-settlement contours are sometimes also known as final levels.