Environmental/Contamination Investigation

hydraulic-conductivity-slug

‘Slug tests’ are are commonly used as part of a risk assessment to help us determine groundwater contaminant flows. In this case groundwater and dissolved petroleum hydrocarbon horizontal flow velocity and contaminant transport risk offsite from a facility to the north of Sydney. Our graduate Jessica showed her handy skills by putting together this beautifully

read more
ALGA Australasian_Land_and_Groundwater_Association

  Many thanks to ALGA (Australian Land and Water Group and Michal) for providing the recent seminar on using Willowstick for high resolution groundwater flow modelling, presented by the good folks at Hydroterra. As a former geophysicist (humping back packs of gear across mine sites and glacial flows alike) I enjoyed both the summary on geophysical

read more

iEnvi was engaged by a client to complete an acid sulfate soil management plan (ASSMP) of a residential property in Sydney, NSW. The client proposed the development of a granny flat at the rear of the existing residential property and required an ASSMP to satisfy the conditions of a development application. A desktop review was

read more

  When is a Soil Stockpile ‘Waste’, and Can a Hotspot of Asbestos or ACM in a Stockpile be Removed and the Soil be reclassified? Generally as consultants we have had a slight confusion on the strict regulation and guidelines information, and information received by NSW EPA in seminars, advice etc, on when contaminated soil

read more
Leachate-Treatment

The Little Bushy Warren waste collection site is used for the gathering of green garden waste for Hampshire. The green waste is composted in windrows, and turned into soil and lawn conditioners, woodchip mulch or pine bark. Two lagoons collect rainwater runoff from a four hectare hard-standing area for the compost windrows. Veolia asked for

read more

  iEnvi was engaged by a private client to complete a Preliminary Site and Further Delineation Investigation (PSI and FDI) for a Section 53V Audit of a residential property to provide additional site information that would address data gaps identified by an Auditor in a previous contamination assessment for the site which would assist in

read more
auto recycling environmental site investigation

iEnvi was engaged by an automotive recycling company to undertake a preliminary site investigation at a recycling facility in Melbourne, Victoria. The company wished to refinance the site and require an assessment of the level of environmental and human health risk associated with the automotive recycling processes and chemicals at the site. iEnvi completed historical

read more

  Large consistent volumes of landfill leachate emanating from a restored landfill site. The landfill had been used for many years, for the disposal of domestic and vehicle batteries and it was believed other wastes were also tipped. This leachate posed a threat to local surface and groundwater. Domestic landfill leachates can display a variety

read more
UPSS abandonment underground fuel tank

iEnvi was engaged by a local restaurant owner to manage the decommissioning and abandonment of three underground storage tanks (USTs) at a restaurant in Hervey Bay, QLD. The site is currently on the QLD Environmental Management Register (EMR) for historical use of the site as a commercial service station. The client wished to have the

read more
mixed wastewater reedbed systems

The wastewater was highly contaminated with amines and phenols (COD up to 5000mg/l). The facility used a batch processing method, which meant the water was highly variable, and very difficult to treat by conventional methods.  Starting with demonstration that soil based reed beds were the ideal solution as they were versatile enough to handle the

read more