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Heavy metal concentrations in wood chips

Heavy metal concentrations (mg/kg) in wood chips (New York State Energy Research and Development Authority, 2013).
Metal Mean1 Median1 SRV – residential2 SRV – commercial SLV3
Vanadium 0.02 0.57 1.08 16 8
Chromium (III) 0.24 7.36 23160 100000 >100000
Manganese 70.6 272 2104 26000 260.4
Iron 18.1 345 10808 100000 na
Cobalt 0.03 0.14 4.62 69 54.1
Nickel 0.36 1.98 170 2600 352
Copper 1.32 3.41 2192 33000 1404
Zinc 5.93 17 4632 70000 6008
Arsenic 0.05 1.17 0.08 1.2 11.64
Cadmium 0.005 0.079 1.59 23 17.62
Lead 0.25 1.12 300 700 5401
Antimony 0.005 0.397 93 6.2 1.82
Barium 17.4 45.9 41000 3000 3368
Selenium 0.04 0.09 1200 77 5.28
1 13 samples
2SRV=Soil Reference Value (mg/kg)
3SLV=Soil Leaching Value (mg/kg); assumes 3-foot-thick media and 3-foot separation from groundwater