How do I find someone to remediate (clean) chemical
contamination?
As the remediation of clan labs involves specialist techniques (which extend beyond a general
clean), it is important that remediation service providers (specialist industrial cleaners) are
sufficiently knowledgeable and experienced to undertake the work required as per the
remediation recommendations made by the assessor. Suitable remediation service providers
can be found through an internet search.
To prevent conflicts of interest, remediation service providers should have no association with
the assessor(s) and should not be engaged by the assessor. Similarly, remediation service
providers should not engage the assessor to perform post remediation validation sampling.
How is contamination of my property assessed?
To assist in determining the presence and degree of any chemical contamination, there are
National Guidelines that outline the sampling program that must be undertaken by an assessor.
In summary, the sampling program must include (as a minimum):
taking at least five surface samples from within the premises and submitting them to a
suitable laboratory for quantitative assessment.
taking and testing surface samples from areas that show evidence of contamination,
surfaces used in the drug manufacturing process and any room inhabited by a child less
than 16 years of age.
testing for volatile organic compounds throughout the premises.
taking at least two soil samples from areas where there is evidence of soil contamination or
near well-travelled paths.
Assessors must follow the sampling program described in the National Guidelines and provide
the premises owner with a written report which outlines the results and the remediation steps to
be implemented to reduce the health risks to acceptable levels. To assist in the development of
the sampling plan, local council officers and premises owners are encouraged to provide the
assessment service provider with any relevant available background information on the clan lab
(e.g., the notice and attachments issued by the local health authority).
What services should I expect from an assessor?
Preliminary assessment – At least five surface samples from within the premises will be
taken and tested, testing will be undertaken for volatile organic compounds (VOCs)
throughout the premises and soil samples (minimum of two) will be taken for testing from
areas where there is evidence of soil contamination or near well-travelled paths. Indoor and
outdoor areas of the property will be assessed, after which a detailed preliminary
assessment report will be provided.
Remediation action plan (RAP) – When a preliminary assessment report shows that
investigation levels have not been exceeded, remediation is not required. However, it is
recommended that the property is generally cleaned. If the preliminary assessment report
shows investigation levels (detailed on page 28 of the National Guidelines) have been
exceeded, a RAP will be developed by the assessor detailing all the actions recommended
to reduce risks to acceptable levels and establish safeguards to complete the remediation
in an environmentally acceptable manner.
Post clean/remediation assessment – Once the clean has been completed, the assessor
will conduct a site validation to ensure that the objectives stated in the RAP have been
achieved. The assessment will include but not be limited to the following: a general
inspection of the site, re-sampling of all surfaces from which initial samples were taken
where results exceeded investigation levels, sampling of areas which are expected to have
frequent contact (for example kitchens and bathrooms) and sampling for VOCs where
required. Ideally, the same assessor will conduct the pre and post remediation
assessments.