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[[File:Wentworth-Grain-Size-Chart.pdf|thumb|Wentworth-Grain-Size-Chart]]+
__NOTOC__
__NOTOC__
−<pdf>Wentworth-Grain-Size-Chart.pdf</pdf>
[[File:SoilComposition.png|thumb|SoilComposition]]
[[File:SoilComposition.png|thumb|SoilComposition]]
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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.
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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.
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+==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==