Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:5:p3
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 5 (pt 3/10)
Character Range: 153021–156055

walkover or during test pitting and trenching) contain asbestos.
       * soil sampling for the detection of asbestos fibres released from fragments of bonded ACM is not required where the bonded ACM is in good/reasonable condition.
       * if fibrous asbestos (such as severely weathered bonded ACM or insulation materials) is not observed during the field sampling program or indicated by the laboratory analysis of the selected suspect materials, no further consideration or action for this form of asbestos is required
       * if asbestos fibres are detected by qualitative laboratory analysis, appropriate remediation and management action will be required (a conservative management approach which does not rely on extensive soil sampling for the presence/absence of asbestos fibres is recommended).
   3           Intrusive investigation to delineate impacted area
       * gravimetric analysis of each fill area will be required and the bonded ACM results for each area compared with the relevant screening level
       * a weight-of-evidence approach should be adopted for the assessment with consideration given to the distribution of different fill types, the heterogeneity of the contamination (including condition of bonded ACM) and the uncertainty associated with the sampling methodology
       * if there is uncertainty that the screening level is exceeded, additional systematic sampling and gravimetric determination could be undertaken or a conservative approach to management adopted
       * areas where the screening levels are not exceeded require no further action or assessment in relation to asbestos other than ensuring that no visible asbestos is present at surface.
   4           Management/remediation of areas of elevated levels of bonded ACM and/or fibrous asbestos by
       * bulk screening of impacted site soils to remove bonded ACM (only feasible for sandy soils)
       * on-site containment in accordance with jurisdictional requirements1 or
       * disposal to an appropriate waste facility
       * no visible asbestos should be present at the completion of remediation works.
  1 These requirements will consider human health risks arising from current and potential future land uses.  They may include mandating of barrier layers, containment cells, depth of burial, ongoing monitoring and other statutory conditions of site use (e.g. as listed in a site management plan).

Case study 3 - Application of petroleum hydrocarbon screening levels  – redevelopment of an industrial site for residential use

Site Scenario - Former small-scale regional fuel depot proposed for low-density residential use
After the site ceased to operate as a fuel depot in the mid-1980s, all tanks were removed and the site is understood to have been filled with clean silt to 2 m depth shortly after the depot was decommissioned. For the past 15 years the site has been used for storage of motor vehicles and agricultural equipment.
Response
A PSI was carried out and an initial CSM developed. The site has