Characteristics of Natural and Urban Soils - Dealing with Contaminated Sites: From Theory Towards Practical Application - page 132

Cr levels detected in topsoil and subsoil collected at Location A, showing the
ANZECC Investigation level ( note sample 87 has a value of 130 mg/kg, it also
contained 37 mg/kg of Ni, more than any other samples from the area )

60

Surface samples
Subsurface samples

40

20

0

1 11 21 31 41 51 61 71 81 91

Sample No.

Fig. 2.16 Cr levels detected in topsoil and subsoil collected at the above locations, showing the
ANZECC Investigation level for 2-composite samples (25 mg kg − 1 ). Note: sample 87 has a value
of 130 mg kg − 1 . It also contained 37 mg kg − 1 nickel, more than any other sample from the area

Fe and Cr content in soils at Broadford

140

120

100

y = 0.6207x + 20.554
R 2 = 0.7816

80

Series1
Linear (Series1)

60

40

20

0

0 20 40 60 80 100 120 140 160 180 200

Fe (mg/kg)

Fig. 2.17 Cr and Fe are closely related in soil samples containing many ferruginous nodules as
shown by acid extractable Cr versus Fe contents collected at a location near Seymour, Victoria

2.7.4 Vanadium in Soils

Vanadium has accumulated preferentially in secondary ferruginous deposits in a
weathering profile in sedimentary rocks in Heidelberg, a suburb of Melbourne to a
level where some samples of this material exceeded the 50 mg kg dw − 1 EIL for soils.

Once again the redevelopment of the site came to a halt until the risk associated with
the vanadium could be assessed.

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