Sand FilterConstruction Specifications

Parameter Specification Size

Sand ASTM C-33 concrete, medium agg. .02-.04in.

Peat Ash content: ᝿% Reed-sedge

pH range: 5.2-4.9 hemic peat

Bulk density: .12-.15 g/cc

Leaf Compost CFS Treatment Systems

Underdrain

gravel AASHTO M-43 1/2-2 in.

Geotextile

fabric ASTM D-751, D-1117, and D-1682

Imperm. Liner ASTM D-751, D-412, D-624, and D-471 30 mil thick

PVC Piping AASHTO M-278 4-6 in. (Sch. 40)

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Specifications are listed in this slide for many materials frequently used in sand and organic filters. These are typically specifications for materials required for filter practices, alternative localized specifications are available in different jurisdictions.