A practical Australian field guide to low-flow groundwater sampling: equipment, flow rates, stabilisation criteria, PFAS-safe tubing, holding times and QA that stands up to regulatory audit.
What environmental investigations does a Queensland wastewater treatment plant upgrade need? How a contaminated land investigation, HBM survey and PFAS assessment gave one council cost certainty before construction.
EPBC Act reforms and the new NEPA took effect on 1 July 2026. Here is what Australia’s independent federal environmental regulator means for developers: referrals, audits, tougher penalties and next steps.
Found unexpected contamination on site? Stop work, secure the area, document the find and check your state EPA notification duty. A practical step-by-step guide for NSW, Victoria, Queensland and South Australia.
When a PSI cannot close contamination questions, a DSI is required. NEPM Schedule B2 purpose, SAQP, CSM refinement, media and state practice.
iEnvi provided an independent asbestos source assessment and post-removal clearance at a greenfield development in south-west Sydney. The assessment determined the fragment originated from a historic stockpile, verification testing returned no asbestos detected, and the site was cleared to progress with development.
iEnvi supported a Tier 1 contractor delivering NBN trenching and pit works across a major Brisbane infrastructure precinct, managing PFAS and asbestos risk with in‑situ waste classification and immediate backfill to meet Commonwealth safety requirements and avoid costly hazardous disposals.
A concise, defensible Preliminary Site Investigation (PSI) and targeted soil screening at a former regional Queensland sawmill clarified contamination risk (timber-treatment residues, unknown fill, petroleum), updated the conceptual site model and set clear triggers for any further DSI or groundwater work — supporting sale, planning and due diligence.
iEnvi completed a targeted, construction‑friendly Baseline Contamination Investigation at a large southern Brisbane warehouse and logistics facility to provide a defensible contamination snapshot for lease handover. The program combined desktop records review, GPR service clearing, targeted drilling (8 locations to ~8 m), 16 primary soil samples plus QA/QC for TRH, BTEXN, PAHs, metals and asbestos, and a Baseline Contamination Report signed by a CEnvP Site Contamination specialist.
Practical groundwater monitoring that confirms monitored natural attenuation, meets regulator expectations, and supports a safe transition from quarterly to biannual sampling with clear triggers and contingency planning.