Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:1850:p65
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 1850 (pt 65/117)
Character Range: 528271–531726

to measure. Representative data can be difficult to obtain in low organic carbon aquifers, in which case, reasonable default values should be selected based on geological records.
Infiltration                                                                                                       Meteorological data is easy and relatively inexpensive to obtain.
Degradation                                                                   (not for metals)                     Relatively difficult and expensive to measure and requires long-term monitoring but is essential to provide confidence in outcomes.
Contaminant concentrations                                                                                         Cost dependent on analytical suite and number of samples.
Redox conditions                                                                                                   Cost dependent on analytical suite and number of samples (DO, pH and redox inexpensive and easy to measure).

Adapted from EA (2000a)

    11              Assessment of asbestos soil contamination

11.1          Introduction
The recommended general process for assessment of site contamination, including for assessment of asbestos, is shown in Schedule A to the NEPM. The process starts with a Preliminary Site Investigation (PSI), which may lead to a Detailed Site Investigation (DSI) and/or an appropriate management strategy if required. Where remediation is required, appropriate validation should be carried out to verify the effectiveness of the measures undertaken. All soil asbestos investigation and management work should be conducted by a competent person.
A competent person in the context of asbestos and the NEPM is a person who has acquired, through training or experience and qualification, the knowledge and skills to identify, investigate and assess asbestos in the context of an environmental site assessment. This includes identifying the potential for asbestos contamination from site history information.

The site-specific assessment of sites contaminated by asbestos in soil should be aimed at describing the nature and quantity of asbestos present in sufficient detail to enable a site management plan to be developed for the current and/or proposed land use as relevant for the site. The site management plan should consider what action would be necessary in circumstances where asbestos fibres could become airborne and pose a human health risk.

This guidance is designed to be used in combination with the guidance on asbestos in Schedule B1 and with reference to Guidelines for the Assessment, Remediation and Management of Asbestos-Contaminated Sites in Western Australia published by the Western Australia Departments of Health in 2009 (WA DoH 2009a). The latter and related publications on asbestos, including a summary of the guidelines, which is updated annually, may be downloaded from
 http://www.public.health.wa.gov.au/3/1144/2/contaminated_sites.pm.

The types of asbestos referred to in this guidance include:
    * bonded ACM
    * fibrous asbestos, FA
    * asbestos fines, AF.
These terms are defined in Schedule B1 Section 4.4.

11.2          Preliminary site investigation
As for all site assessments, the PSI should include a desktop study (including assessment of site history) and a site inspection. This should be carried out by a qualified and experienced assessor/competent person.

As noted in WA DoH