Michael Nicholls 
How a targeted investigation, waste classification testing and a pragmatic remediation strategy closed data gaps for asbestos‑contaminated imported fill in north‑west Sydney — turning a NSW EPA Clean‑Up Notice into a compliant, cost‑efficient remediation pathway.
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.
Targeted landfill gas and groundwater assessment at an operating bus depot adjacent to two closed municipal landfills. No methane detected; EPA Victoria action levels not exceeded. Planning condition satisfied — no further LFG controls recommended.
Clear, practical guidance for site owners, developers and environmental managers on recognising a hydrocarbon sheen versus measurable LNAPL in groundwater, when a risk-based duty to notify regulators can be triggered in Australia, and how to manage next steps to reduce transaction, development and compliance risk.
iEnvi conducted a Preliminary Site Investigation and soil testing across two lots (≈9.9 ha) in Wollert, Victoria. Eleven surface samples and stockpile checks found no asbestos or contaminant levels above NEPM Tier 1 screening criteria for sensitive land uses, supporting school development approval with a small set of practical recommendations for construction-phase controls.
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.
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…
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.
How a lean, risk‑focused contaminated‑land approach gave a community sports club a construction‑ready landfill gas assessment and a practical Construction Environmental Management Plan (CEMP) so the clubhouse could be built safely, on time and on budget.
iEnvi completed a Baseline Environmental Condition Investigation (BECI) at an established western Melbourne bus depot to meet Department of Transport & Planning requirements. Targeted soil and groundwater testing (10 soil bores and monitoring wells) found no significant contamination; a Fuel System Operating Plan (FSOP) was recommended and reporting provided regulator‑defensible documentation under Victoria’s Environment Protection Act 2017.