Insights & Technical Articles

Overview If land in Queensland is listed on the Environmental Management Register (EMR) or Contaminated Land Register (CLR), removing it is not a simple letter to the department. Under the Environmental Protection Act 1994, removal normally requires a Contaminated Land Investigation Document (CLID) prepared by a suitably qualified person, certified by an approved contaminated land …

PFAS NEMP 3.1 (May 2026) updates drinking water PFOS limits, freshwater PFOS ecological DGVs and marine interim values. Soil, recreational water and most investigation logic are unchanged. Here is what practitioners need to re-screen.

How law firms, property managers and acquirers scope environmental due diligence before settlement: desktop review, PSI, vendor report critique and red-flag advice.

Find out when a contaminated land site audit is legally required in Australia – NSW, VIC, QLD and SA regulatory obligations explained for practitioners.

How to compare excavation, in-situ treatment, containment and validation for soil and site remediation on contaminated properties in Australia.

When councils, regulators and transactions require a suitably qualified person or CEnvP Site Contamination Specialist on contaminated land projects.

What UPSS validation and tank pit validation involve for service station and petroleum sites in NSW and QLD, and common mistakes to avoid.

A practical guide to preliminary and detailed site investigations in Australia: when a PSI is enough, when a DSI is required, and how to scope the work.

What is Site Investigation? Site investigation is the process of gathering information about the physical characteristics of a construction site to ensure its suitability for a…

You see lots of building developments going up, and large construction sites.

When is a Soil Stockpile ‘Waste’, and Can a Hotspot of Asbestos or ACM in a Stockpile be Removed and the Soil be reclassified?

Blanks are artificial samples (made up of ultra-pure MilliQ water) used to trace sources of contamination which may be introduced to samples: During handling and transportation;…

As contaminated land consultants, a large part of what we do involves the investigation and remediation of soil and groundwater that has been exposed to liquids that are…

The Australian and New Zealand governments have collectively established and promoted guidelines to manage both countries water quality for over 25 years.

iEnvi has undertaken soil vapour sampling, using the implementation of the ASC NEPM, to identify potential risks of vapour intrusion regarding human exposure on various sites.

The NSW Environmental Protection Agency (EPA) updated the Contaminated Land Management Compliance Statement in July 2018.

BEWARE: Sometimes excavated natural material (ENM) or virgin excavated natural material (VENM) classification and reporting isn’t done right, or it is done correctly but other…

One uncertainty regarding per‐ and polyfluoroalkyl substances ( PFAS) is the total oxidisable precursor assay (TOPA).

Construction environmental management plans (CEMP) are basically the who, what, when and where of on-site environmental management during construction activities.

Dense nonaqueous phase liquids (DNAPL) are a group of halogenated semi-volatiles, non-halogenated semi-volatiles, and halogenated volatiles with a greater density than water.

iEnvi receive frequent requests from clients to help manage disposal of impacted materials, products, land or groundwater contaminated by per- and poly-fluoroalkyl substances…

The NSW EPA released new Guidelines on the Duty to Report Contamination in July 2015, replacing the 2009 version.