Table 4

Combined Environment Agency and Water Research Centre sediment results: February and March 1998

SubstanceHighest recorded concentrations in sedimentsStandards
Soil: Dutch7Soil: UK6
Total cyanide (mg/kg)1.0504-150 2504-151
Benzo(a)pyrene (mg/kg)0.0011——
Arsenic (mg/kg)5.155104-152, 404-153
Iron (mg/kg)7652——

  • —No standard available.

  • ↵4-150 Complex cyanide (pH >5).

  • ↵4-151 Complex cyanide, for domestic gardens, allotments.

  • ↵4-152 For domestic gardens, allotments.

  • ↵4-153 For parks, playing fields, open space.