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[[File:Particle void ratio.png|thumb|Highest void ratio comes from having uniformly graded aggregate.]][[File:Particle permeability.png|thumb|Higher permeability comes from larger, angular, uniformly graded aggregate]] The important characteristics of the stone within the reservoir or [[underdrain]] are the lack of fines, the void ratio and (to a lesser extent) the permeability.
Porosity and permeability are directly influenced by the size, gradation and angularity of the particles <ref>Judge, Aaron, "Measurement of the Hydraulic Conductivity of Gravels Using a Laboratory Permeameter and Silty Sands Using Field Testing with Observation Wells" (2013). Dissertations. 746. http://scholarworks.umass.edu/open_access_dissertations/746</ref>
This is a collection of three articles with the common theme of being aggregate products for various applications in LID.
{{TOClimit|2}}
==Underground construction aggregates==
===For reservoirs===
{{:Reservoir aggregate}}
===For choking/choker layers===
{{:Choking layer}}
----
===OPS Aggregates===
{{:OPS Aggregates}}
For more information see [[OPS aggregates]]
==Reservoir Stone==
==Landscaping aggregates==
{{:Stone}}
==On-site verification==
{{:Jar test}}