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Line 1: − + − *Sand manufactured from crushed recycled glass is available locally, and is a viable alternative. Line 15:
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[[File:PSD sand.png|thumb|Particle size distribution graph, as described in table]]
[[File:PSD sand.jpg|thumb|Particle size distribution graph for C33 sand, as described in table]]
*Coarse sand for LID construction shall be washed clean and free free of toxic materials.
*Coarse sand for LID construction shall be washed clean and free free of toxic materials.
*The pH of the sand shall be ≤ 7.0.
*The pH of the sand shall be ≤ 7.0.
*Manufactured sand from limestone or dolostone parent material is not acceptable.
*Manufactured sand from limestone or dolostone parent material is not acceptable.
*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.
|9.5 mm||100
|9.5 mm||100
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|4.75 mm (No.4)||95-100
|4.75 mm (No.4)||95 - 100
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|2.36 mm (No.8)||80-100
|2.36 mm (No.8)||80 - 100
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|1.18 mm (No.16)||50-85
|1.18 mm (No.16)||50 - 85
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|0.60 mm (No.30)||25-50
|0.60 mm (No.30)||25 - 50
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|0.30 mm (No.50)||5-30
|0.30 mm (No.50)||5 - 30
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|0.15 mm (No.100)||0-10
|0.15 mm (No.100)||0 - 10
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|0.075 mm (No.200)||≤ 3
|0.075 mm (No.200)||≤ 3