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__NOTOC__
__NOTOC__
<pdf>Wentworth-Grain-Size-Chart.pdf</pdf>
[[File:SoilComposition.png|thumb|SoilComposition]]
[[File:SoilComposition.png|thumb|SoilComposition]]
Many of the physical and chemical properties of soil are affected by texture.
Many of the physical and chemical properties of soil are affected by texture.
If the media texture is too coarse (i.e., contains more [[sand]] than specified) it will have higher permeability and may drain too quickly to provide adequate treatment of run-off, and may not retain enough water between storm events to sustain healthy vegetation cover.
If the media texture is too coarse (i.e., contains more [[sand]] than specified) it will have higher permeability and may drain too quickly to provide adequate treatment of run-off, and may not retain enough water between storm events to sustain healthy vegetation cover.
==Native soil classifications==
{{plainlist|
*A – well drained sands and gravel, high infiltration capacity, high leaching potential and low runoff potential;
*B – Moderately drained fine to coarse grained soils, moderate infiltration capacity, moderate leaching potential and moderate runoff potential;
*C – Fine grained, low infiltration capacity, low leaching potential and high runoff potential;
*D – Clay soils, very low infiltration capacity, very low leaching potential and very high runoff potential.}}
==Testing==
==Testing==