When a PSI is not enough: Detailed Site Investigation in Australia
When a PSI cannot close contamination questions, a DSI is required. NEPM Schedule B2 purpose, SAQP, CSM refinement, media and state practice.
detailed site investigation
NBN Trench and Pit Works, Brisbane QLD
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.
Environmental Delineation Investigation at Industrial Site in Northwest Sydney
iEnvi completed a Delineation Investigation (DI) at an aerosol and paint manufacturing site in northwest Sydney. The DI installed three groundwater monitoring wells, 13 soil bores and two stormwater points, collecting 8 groundwater, 39 soil and 2 stormwater samples. Findings showed minor soil hydrocarbons (one local exceedance), groundwater elevated dissolved metals likely related to background geochemistry, and isolated vapour-intrusion exceedances — prompting targeted sub‑slab vapour testing and further risk-management recommendations to meet NSW EPA expectations.
Confident Acquisition Backed by Targeted Environmental Checks
Targeted, NEPM‑aligned due diligence (PSI + simple tenant lines of enquiry) to give fast, proportionate assurance for acquisition and staged redevelopment of an industrial site in South Australia — reserving intrusive investigation for clearly observed triggers.
Compliance Investigation and Cost‑Effective Remediation of Asbestos‑Impacted Soil at a Northern Melbourne Industrial Site (VIC)
iEnvi investigated asbestos‑impacted soil and groundwater at an industrial site in northern Melbourne (VIC). Bonded asbestos in stockpiled soil was removed by hand‑picking (emu‑picking) and the remaining material verified for reuse as clean fill, avoiding costly landfill disposal while meeting EPA Victoria obligations under the General Environmental Duty.