Reusing remediated or clean excavated soil on-site or between nearby projects can save hundreds of thousands of dollars, reduce landfill and quarry demand, and speed delivery — if managed with appropriate soil science and EPA approvals.
iEnvi completed a rapid Preliminary Site Investigation (PSI) to support a developer converting a post‑war residence to a childcare facility in Western Sydney. The PSI followed NEPM guidance and NSW child‑care planning requirements, found low contamination risk, and recommended asbestos inspection prior to renovation.
iEnvi provided a site-specific, commercially focused remediation program for a Western Sydney coatings manufacturer, combining UST removal, source-zone treatment and a four-month Multiphase Vapour Extraction campaign to manage solvent impacts and restore asset value.
iEnvi conducted a targeted soil, sediment and surface water sampling programme near a scheelite mine and municipal water intake in Tasmania to assess potential human health risks from mercury. Results indicated likely minimal risk in sampled areas but limited sampling and incomplete site history mean follow-up actions were recommended.
Remediation program for Cr6+ impacted soils and fractured-basalt groundwater at a long‑running steel processing facility. Summary of contamination, in‑situ treatment techniques trialled, pilot results and commercial considerations for redevelopment and liability management.
Overview of a multi‑site sediment and soil remediation programme in Southern China (from 2012). Remediation combined delineation, in‑the‑dry excavation, solidification/stabilisation and beneficial reuse of treated material as engineered fill.
Practical environmental and regulatory advice provided during a NSW Government drainage dam construction project where impacted fill, asbestos and waste tyres were exposed on Crown Land. Advice focused on safe legal waste management, maintaining construction progress and proposing a long‑term Environmental Management Plan.
Urgent PSI (Phase 1) for an oil depot in Bowen, QLD: fieldwork started within three days to assess above‑ground tanks and diesel‑impacted soil, clarify leasing liabilities and support contract negotiation after an oil company acquisition.
Practical, cost‑conscious remediation and long‑term management of petroleum contamination at Council depots using a monitored natural attenuation (MNA)‑led strategy supported by targeted product removal, hydrogeological testing and fate‑and‑transport modelling.
Pilot-scale agricultural soil remediation in Gansu/Baiyin addressing Hg, As and Cd in root-zone soils. Combined excavation, mobile Matrix Enhanced Treatment System (METS) soil washing and targeted soil amendments to restore agricultural use and manage human health risk.