Standards New Zealand has today released a new standard for the testing and decontamination of methamphetamine-contaminated properties (NZS 8510). Ministry of Health was represented on the working group that developed the Standard.
The standard is available on the Standards New Zealand website.
The scope of NZS 8510 covers:
- measures to manage risks to health, well-being, safety, and the environment
- guidance on methods of screening, sampling and testing of properties and their contents
- best practice procedures and criteria, for decontaminating methamphetamine-contaminated properties and their contents. This includes providing for room-by-room, ie, only those rooms found to be contaminated need to be decontaminated, to avoid unnecessary costs and disruption for residents and home owners
- guidance on post-decontamination actions, including sampling and testing to verify decontamination has been achieved and reporting and documentation requirements.
The standard adopts a single level of 1.5 µg/100 cm2 (1.5 micrograms of methamphetamine per 100 square centimetres of surface sampled) that ‘high use areas’ of affected properties should be decontaminated to, regardless of whether the properties were involved in the production or use of methamphetamine. High use areas are defined as those areas that can be easily accessed and are regularly used by adults and children.
The Ministry of Health believes this new standard provides appropriate public health protection as well as giving clearer advice on the clearer advice and controls around the decontamination standards and processes.
The standard replaces the 2010 Ministry of Health Guidelines for the Remediation of Clandestine Methamphetamine Laboratory Sites. The superceded guidelines and a 2016 review of remediation standards are available in our library catalogue: