Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:4:p5
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 4 (pt 5/5)
Character Range: 1587975–1588849

change in the future if additional data becomes available. If, in the future, toxicity data can be expressed in terms of added concentrations, it is recommended that the method of Hamon et al. (2004) be used to derive ABC values. Examples of the ABC values generated by the Hamon et al. (2004) method are presented in Table 32. The soil-specific estimate of ABC could be added to a generic ACL (if toxicity data could be expressed as added As, but no normalisation relationships were suitable) or it could be added to a soil-specific ACL (if it were possible to express the toxicity data in terms of added As and if normalisation relationships could be applied to the data).
Table 32. Ambient background concentrations of arsenic (As) estimated using the method of Hamon et al. (2004) as a function of the iron content of the soil.
Soil iron (%)  As (mg/kg)
0.1            1