A detailed assessment is generally carried out following a positive screening assessment or if you have a strong indication that the property is contaminated with methamphetamine. Both room-by-room meth testing and post-decontamination assessments are essentially detailed assessments (NZS8510:2017). The sampling and laboratory analysis processes are similar. The specific differences are outlined below.

Room-By-Room Meth Testing

$200 (plus gst) per sample

The purpose of a room-by-room meth test is to determine the extent and location of methamphetamine contamination in a property. Generally a screening assessment would have already been completed which gave us a combined reading for the whole property indicating the presence of methamphetamine. A detailed assessment goes one step further and gives us a reading for every area in the property.

According to the standard NZS8510:2017, at least one sample has to be taken in every room, including garages. Areas larger than 10m² require a separate sample for every ten square metres. For examples a double garage (6m x 6m), which is 36m² would require four samples.

Once this testing is completed you will receive a detailed report which should then be given to whoever is going to carry out the decontamination works on the property. The cleaners need this information to properly inform their work so they can apply the best methods needed depending on the level of contamination present.

For more information about detailed assessments click here.

Post-Decontamination Assessment

$200 (plus gst) per sample

A post-decontamination assessment is carried out following cleaning or decontamination works on a property. The purpose of a post-decontamination assessment is to evaluate the effectiveness of the decontamination works. Basically whether the all the contaminated areas in the property was successfully decontaminated to a safe level (<1.5μg/100cm²) according to NZS8510:2017.

According to the standard NZS8510:2017, at least one sample has to be taken in every room, including garages. Areas larger than 10m² require a separate sample for every ten square metres. For examples a double garage (6m x 6m), which is 36m² would require four samples.

Room-by-room testing is completed again and a report generated with the results. Depending on the results, one of two things can then happen:

1. Property is successfully decontaminated - our post-decontamination report should be given to the decontamination team. They will then issue you with a clearance report and a clearance certificate.
2. Property is still contaminated - clearance documents cannot be issued and the property will require further decontamination works. Following this, another post-decontamination assessment will need to be completed. This process continues until the property has been successfully decontaminated.

For more information about detailed assessments click here.