Cost‑Efficient Remediation for Hydrocarbon Contamination — Newcastle & Wollongong, NSW

Contaminated Sites Evaluation

Targeted soil sampling at three sites identified shallow hydrocarbon contamination at two locations. iEnvi recommended a cost‑efficient program combining a biological treatment additive (S200 OilGone) with excavation and encapsulation to reduce health, ecological and transaction risk.

Soil Investigation and Potential Soil Reuse — Morningside, QLD

soil reuse environmental consulting

Shallow soil testing at a residential site in Morningside prior to construction of a childcare centre found concentrations below regulatory assessment criteria for human health and ecological receptors. Soil was considered low risk and no further action was required. Reuse options may now be considered prior to offsite removal.

Housing Development Application, Sydney NSW

housing development application

iEnvi completed a preliminary site investigation (PSI) and soil sampling for a Sydney property intended for residential redevelopment. A 253‑page technical report and site history review concluded the site is suitable for residential use and suitable to support a development application.

Recovered Aggregate Reuse — Inner West Sydney Council (NSW)

roadway contamination recovery

iEnvi supervised a 2019 resource-recovery program to reuse road asphalt millings as engineering fill for new sports fields. About 19,755 tonnes from 56 roads were reused under Recovered Aggregate Order requirements and assessed suitable for public open-space use.

Pre‑purchase due diligence: Limited soil investigation and waste classification, Rosehill NSW

environmental test for property purchase

A concise case study of a limited pre‑purchase soil investigation at an open car‑park in Rosehill NSW. Investigation identified historical fill with asbestos‑containing material (ACM), minor TRH and PAH in saturated soils, existing groundwater bores, and potential groundwater inflow to a proposed excavation pit. Practical risk management and next steps are summarised for developers and buyers.

Lease Renewal of Petrol Station: Baseline Environmental Investigation, Granville NSW

Baseline environmental investigation for lease renewal of a petrol station in Granville NSW. Two bores and two additional monitoring wells installed, groundwater and soil vapour assessed — low residual risk and no duty to report under NSW CLM Act Section 105.

Groundwater Sampling at Ski Lodge, Perisher Valley (NSW)

Snowy Mountains groundwater

Low‑flow groundwater monitoring was completed at a decommissioned underground petroleum storage site in Perisher Valley. Results identified no ecological or human‑health groundwater risk; recommendations and compliance notes provided for property transactions in Snowy Mountains National Park.