Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:20:p8
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 20 (pt 8/10)
Character Range: 1672167–1675409

ACLs                                 210             440  470  490  510   530
                                               pH
                                               4.5             5.5  6    6.5  7.5   8.0
pH -based ACLs                                 130             290  440  630  1300  1800

7.7.3.2         Calculation of ambient background concentration values
The ABC values for aged Cu contamination were calculated using the data from Olszowy et al. (1995), and are presented in Table 58.

7.7.3.3         Examples of soil quality guidelines for aged copper contamination in Australian soils based on lowest observed effect concentration and 30% effect concentration data
Four examples of SQGs that would apply to aged Cu contamination that represent the range (but not the extremes) of SQGs that would apply to urban residential/public open space and commercial/industrial land uses are presented below.
SQG(LOEC & EC30)—Example 1
Site descriptors  urban residential land/public open space use in an old Victorian suburb with a low traffic volume.
Soil descriptors – a sandy acidic soil (pH 5.5, CEC 10) with 1% iron content.
The resulting aged ACL(LOEC & EC30), ABC and SQG(LOEC & EC30) values are:
                      aged ACL(LOEC & EC30) CEC-based:  190 mg/kg
                      aged ACL(LOEC & EC30) pH-based: 130 mg/kg
                      aged ACL(LOEC & EC30): 130 mg/kg (the lower of the two ACLs that apply to this soil)
                      aged ABC:  10 mg/kg
                      aged SQG(LOEC & EC30):  140 mg/kg

SQG(LOEC & EC30)—Example 2
Site descriptors  commercial/industrial land use in an old South Australian suburb with a high traffic volume.
Soil descriptors – an alkaline clay soil (pH 7.5, CEC 40) with a 10% iron content.
The resulting ACL(LOEC & EC30), ABC and SQG(LOEC & EC30) values are:
                      aged ACL(LOEC & EC30) CEC-based: 330 mg/kg
                      aged ACL(LOEC & EC30) pH-based: 830 mg/kg
                      aged ACL(LOEC & EC30): 330 mg/kg (the lower of the two ACLs that apply to this soil)
                      aged ABC:  25 mg/kg
                      aged SQG(LOEC & EC30):  355 mg/kg, which would be rounded off to 350 mg/kg.

SQG(EC50)—Example 1
Site descriptors  urban residential land/public open space use in an old Victorian suburb with a low traffic volume.
Soil descriptors – a sandy acidic soil (pH 5.5, CEC 10) with 1% iron content.
The resulting ACL(EC50), ABC and SQG(EC50)  values are:
                      ACL(EC50) CEC based:  300 mg/kg
                      ACL(EC50) pH based:  200 mg/kg
                      ACL(EC50):  200 mg/kg (the lower of the two ACLs that apply to this soil)
                      ABC:  10 mg/kg
                      SQG(EC50):  210 mg/kg

SQG(EC50)—Example 2
Site descriptors  commercial/industrial land use in an old South Australian suburb with a high traffic volume.
Soil descriptors – an alkaline clay soil (pH 7.5, CEC 40) with a 10% iron content.
The resulting ACL(EC50), ABC and SQG(EC50) values are:
ACL(EC50) CEC based:   510 mg/kg
ACL(EC50) pH based:   1300 mg/kg
ACL(EC50):    510 mg/kg (the lower of the two ACLs that apply to this soil)
ABC:     25 mg/kg
SQG(EC50):    535 mg/kg,