Preliminary Site Investigation

Conceptual Site Models in Contaminated Land Assessment: A Practical Guide for Australian Sites

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Conceptual Site Models in Contaminated Land Assessment: A Practical Guide for Australian Sites - iEnvi project image

What is a Conceptual Site Model in contaminated land assessment? A Conceptual Site Model (CSM) is a written and graphical representation of an environmental system. It links contamination sources to exposure pathways and sensitive receptors. Australia’s National Environment Protection (Assessment of Site Contamination) Measure 1999 (amended 2013) requires a CSM at every stage of contaminated … Read more

Proof in the Soil: PSI and Screening for a Former Sawmill

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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.

Fresh Lease, Clean Start: Baseline Check at a Busy Brisbane Logistics Hub

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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.

Ensuring Safe School Development: Soil and Asbestos Investigations in Wollert

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Proposed school site with stockpiles in distance

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.

Compliance Investigation and Cost-Effective Remediation of Asbestos-Impacted Soil, Coolaroo Industrial Site, VIC

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industrial site land

EPA Victoria compliance investigation and remediation of asbestos-impacted soil and groundwater at an industrial site in Coolaroo, including source removal, verification and reuse-focused outcomes.

Orchard Preliminary Site Investigation and Soil Sampling, Griffith NSW

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iEnvi conducted a preliminary site investigation, soil sampling, and a geotechnical classification on an orchard to determine whether the site was suitable for a low density residential development. All requested tasks had to be completed quickly and to a high standard for the client to obtain financing.

iEnvi completed a rapid preliminary site investigation (PSI), soil sampling (60 samples) and geotechnical site classification for a 75‑lot low‑density residential proposal on former citrus orchard land in Griffith LGA. Soils met NSW Excavated Natural Material criteria and the site was classified as moderately reactive (20–40 mm movement potential).

South Australia: 2 x PSI on Agricultural Land for 70- and 50-Lot Residential Developments

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iEnvi can conduct preliminary site investigations and soil sampling anywhere in Australia. Recently we undertook such work in South Australia, for a developer who required fast turnaround on preliminary site investigations and soil sampling for two potential housing developments.

iEnvi completed two fast-turnaround Preliminary Site Investigations (PSI) near Adelaide, SA. One site showed significant risk from past loam mining and fill and requires a larger investigation, remediation and auditor sign-off; the second was suitable for a 50‑lot subdivision after limited sampling.

Preliminary Site Investigation for Child Care Centre — Sydney Northern Beaches

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Desktop (Phase 1) preliminary site investigation for a proposed child care centre in Sydney’s Northern Beaches. The desktop study identified low contamination potential from on‑site history but recommended targeted soil sampling and an asbestos hazardous‑materials inspection before council proceeds with a development application.

Townhouse Development Preliminary Site Investigation, Sebastopol (Vic)

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Case study: PSI, combined geotechnical and environmental drilling, 30 soil bores to 5 m, 15 primary soil samples. Delivered reporting for planning permit in ~2 weeks; cost reported just over $10,000. Practical takeaways for developers on compliance, demolition hazards and cost efficiencies.

iEnvi

National environmental consultancy with direct senior involvement.

Offices in Brisbane, Sydney and Melbourne, South Australia field support, and practical delivery across contaminated land, remediation, groundwater, ecology, environmental management and expert advisory matters.

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