In Situ Vapour Extraction of Soil Gas in a Clay/Shale Profile

Environmental & Earth Sciences Environmental & Earth Sciences Pty Ltd have designed and installed an insitu vapour extraction system which has been designed to effectively achieve the following: Volatilise and vent petroleum hydrocarbon vapour contaminant present on the site (can apply to groundwater rather than soils if the situation requires); To target contaminants present in the interface drainage layer between the shale and clay at between 0.8 a...

Soil and Groundwater Remediation Tips

Soil and Groundwater Remediation Tips Remediation is the management of contaminated sites via various methods such as treatment, containment and removal of chemical substances or waste to prevent, minimise or mitigate potential effects to human health, property or the environment. There are several methods and processes used in remediation. These can range from relatively straight forward earthworks and dig and dump for soil, or pump and treat for groundwater, to comple...

Groundwater monitoring

Environmental & Earth Sciences All mine processes require water for the extraction and concentration of ore. No matter how good the liner/capture system or the environmental management, spillage and leakage will eventually occur. Groundwater monitoring is usually undertaken to detect leaks, although the nature of the leachate can make detection difficult. The recent trend towards using statistical methods leads to confusion and concentration on deleterious contaminants rather th...

Groundwater remediation, particularly under infrastructure

Environmental & Earth Sciences\ 1.0     Introduction Groundwater contamination may be of three different types: SOLUBLE: includes metals, inorganics, organics (includes miscible); sources: Tailings dams, pickled liquor solutions, baths, pots, stockpiles of product and waste. LNAPL: light non-aqueous phase liquid: also known as free product or phase separated hydrocarbons (PSH), essentially is limited to hydrocarbons and can ...

Beneficial reuse of treated soil

HOW WILL TREATED SOIL BE BENEFICIALLY REUSED Soil, compost and B grade quarry material sustainably produced by the Skipton Soil Recycling Facility will be used and blended to create a range of products such as engineered fill, sub base, sands, gravel, landscape material and soil. These products will be beneficially reused in a variety of applications by the construction and landscaping industries. The requirement for soil and fill in these infrastructure...

Asbestos assessment & management

Environmental Earth Sciences was appointed to undertake an environmental investigation at a public school and to provide advice for the management on the audit and approval process for the client in preparation for site development.   THE SOLUTION Fill material had been found onsite consisting of asbestos and other contaminants. Environmental Earth Sciences carried out a detailed investigation of the site and developed a remedial action plan (RAP) and remedial wor...

Landfill monitoring

Sydney Olympic Park is one of the most significant landfill remediation projects in Australia. As the land has a variety of uses, the main concern for the landfills is the management of exposure pathways and receptors to ensure human safety and the health of the surrounding environment.   THE SOLUTION Prior to Environmental Earth Sciences’ involvement, large portions of the site were found to contain wastes such as asbestos, domestic garbage and power station as...

Reusing waste

A Tile Manufacturing Facility had an ongoing waste stream of slurry and dried marble cake from tile production. The client was facing significant cost to dispose of the waste material in landfill. Environmental Earth Sciences was engaged to develop the most cost-effective method of disposal and any options for reusing waste.   THE SOLUTION As a means of lowering waste disposal costs for the client, Environmental Earth Sciences carried out a review of all material ...

Soil & land suitability assessment

Environmental Earth Sciences was engaged to conduct a soil & land suitability assessment and a Strategic Cropping Land (SCL) assessment at a proposed coal mine in QLD.   THE SOLUTION The works included a desktop assessment of cropping history and landscape units across the site followed by field validation, which involved a soil and landscape survey, subsurface investigations and chemical and physical analysis of soil samples. The project assessed soil type...

Acid Sulfate – Sumatra, Indonesia

Environmental Earth Sciences were engaged to provide technical advice, as well as input to the development of control and management systems for a 10,000 hectare agricultural plantation in Sumatra which was completely underlain by acid sulfate soils.   THE SOLUTION Environmental Earth Sciences carried out site inspections to gain a solid understanding of the site. From these inspections, mitigation strategies and monitoring programs were developed to manage the po...