ENVIRONMENTAL FINAL GOVERNING STANDARDS ITALY

ITALY - 7 Solid Waste
Table 7.1. Parameter Limits for Sludge, after Composting
Parameter Unit of Measure Limit of Acceptability
C/N Ratio -- < 30
Cadmium mg/kg on a dry weight basis 10
Chromium mg/kg on a dry weight basis 1,000
Copper mg/kg on a dry weight basis 500
Glass (particle) mm 3
Glass (total) % on a dry weight basis 3
Inert materials % on a dry weight basis 3
Iron % on a dry weight basis 0.5
Humic Matter % on a dry weight basis < 20
Humidity % on a dry weight basis < 45
K2O % on a dry weight basis > 0.4
Lead mg/kg on a dry weight basis 500
Organic Matter % on a dry weight basis < 40
Mercury mg/kg on a dry weight basis 5
Nickel mg/kg on a dry weight basis 100
P2O5 % on a dry weight basis > 0.5
Particle Size mm 0.5 – 25
PCB mg/kg on a dry weight basis 1
Plastics % on a dry weight basis 1
Total Nitrogen % on a dry weight basis > 1
Zinc mg/kg on a dry weight basis 1,000
Table 7.2. Maximum Concentrations for Parameters in Soil, if Sludge is Applied for Agriculture
Parameter
Maximum Concentration in
Soil
(mg/kg of dry soil)
Maximum Amount That Can
Be Applied
(g/ha/yr)
Arsenic 10 100
Cadmium 3 15
Chromium VI 3 15
Chromium III 50 2,000
Copper 100 3,000
Lead 100 500
Mercury 2 15
Nickel 50 1,000
Zinc 300 10,000
September 2012 Italy FGS 7-17
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