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This page provides information on wood chips. While providing extensive information on wood chips, there is a section focused specifically on stormwater applications for wood chips.

Properties of wood chips

This section includes a discussion of chemical and physical properties of wood chips, and potential contaminants in wood chips,

Chemical-physical properties of wood chips

Chemical and physical properties of wood chips

Potential contaminants in wood chips

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Effects of wood chips on physical and chemical properties of soil and bioretention media

In this section we provide information on effects of wood chips on pollutant attenuation and on physical properties of soil and engineered media.

Standards, classification, testing, and distributors

Wood chip standards and specifications

Recommended values for wood chips used in a growth media (Source: see reference list in this section)
pH
Electrical conductivity (ms/cm)
Cation exchange capacity (meq/100g)
Nitrogen (%)
Phosphorus (%)
Potassium (%)
Copper (% minimum)
C:N ratio (minimum)
Lignin (%)
Total organic matter (% minimum)
Moisture (%)
Ash content (%)
Impurities
Fiber content
Expansion	l/kg
Water holding capacity	l/kg

Effects of aging

Prabhu and Thomas (2002) provide an extensive discussion of wood chips decomposition.