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==Sub-surface components==

==Sub-surface components==

Most LID practices use sub-surface features--gravel storage reservoirs, liners, underdrains, monitoring wells, etc. The construction process for sub-surface components works from the ground up. While some LID practices include all the sub-surface components listed below, most designs will not include one or more of these layers. Permeable pavements can have different construction requirements at this stage, mostly regarding compaction of sub-surface layers. '''Installing infiltration chambers also requires guidance specific to that LID type.'''   

Most LID practices use a combination of sub-surface features such as gravel storage reservoirs, liners, underdrains, monitoring wells, and other components to meet their design objectives. The construction process for sub-surface components works from the ground up. While some LID practices include all the sub-surface components listed below, most designs will not include one or more of these layers. Permeable pavements can have different construction requirements at this stage, mostly regarding compaction of sub-surface layers. '''Installing infiltration chambers also requires guidance specific to that LID type.'''   

The '''backfill granular, utilities, and pipes / [[sub-surface components]]''' page gives guidance on:  

The '''backfill granular, utilities, and pipes / [[sub-surface components]]''' page gives guidance on: