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*Coarse sand for LID construction shall be clean and free free of toxic materials.
[[File:PSD sand.jpg|thumb|Particle size distribution graph for ASTM C33 sand, as described in table]]
*The pH of the sand shall be ≤ 7.0. Manufactured sand from limestone or dolostone parent material is not acceptable.</li>
*Coarse sand for LID construction shall be washed clean and free of toxic materials.
*The pH of the sand shall be ≤ 7.0.
*The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to [https://www.astm.org/Standards/C33 ASTM C33/C33M], or otherwise meet the gradation below.
*The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to [https://www.astm.org/Standards/C33 ASTM C33/C33M], or otherwise meet the gradation below.
!style="background: darkcyan; color: white"|Sieve
!style="background: darkcyan; color: white"|Sieve
!style="background: darkcyan; color: white"|Percent passing
!style="background: darkcyan; color: white"|Percent passing
|-
|-
|9.5 mm||100
|9.5 mm||100
|-
|-
|4.75 mm (No.4)||95-100
|4.75 mm (No.4)||95 - 100
|-
|-
|2.36 mm (No.8)||80-100
|2.36 mm (No.8)||80 - 100
|-
|-
|1.18 mm (No.16)||50-85
|1.18 mm (No.16)||50 - 85
|-
|-
|0.60 mm (No.30)||25-85
|0.60 mm (No.30)||25 - 50
|-
|-
|0.30 mm (No.50)||5-30
|0.30 mm (No.50)||5 - 30
|-
|-
|0.15 mm (No.100)||0-10
|0.15 mm (No.100)||0 - 10
|-
|-
|0.075 mm (No.200)||≤ 3<
|0.075 mm (No.200)||≤ 3
|}
|}
[[category: materials]]
[[category: materials]]