The following is a range of case studies detailing ARC’s recent projects:

Detailed Site Investigations (DSI) / Phase 2 Environmental Site Assessments (ESA)

Environmental Site Assessment & Groundwater Investigation (Manjimup, .. Western Australia)

ARC originally undertook a lease-entry baseline Environmental Site Assessment (ESA) and subsequently a Groundwater Investigation of an active fuel depot.

The baseline ESA identified hydrocarbon impacts in shallow soils from the past handling and storage of fuels which required further investigation to assess impacts to the subsurface soils and groundwater.  Groundwater monitoring wells were installed to a depth of greater than 20 mbgl.

 

Environmental Site Assessment (Mansfield, Victoria)

ARC undertook an Environmental Site Assessment of a former public landfill to assess the suitability of the site for repurposing as a more sensitive land use.

The investigation included a desktop historical review, site inspection, landfill gas survey and soil assessment.  ARC led in-depth discussions with the shire council to obtain adequate information on the former landfilling operations which was backed up by a comprehensive historical aerial photograph review.  ARC could then design a sampling program to target the identified extent of the buried wastes.

 

Environmental Site Assessment (Devonport, Tasmania)

ARC undertook an Environmental Site Assessment (ESA) to form a baseline of existing soil quality prior to the commencement of a new tenant within the Devonport Ports Terminal.

A comprehensive health, safety and environment plan was developed to meet the requirement of working on the busy Ports Corporation property.  The scope of works included a drilling program to assess soil conditions targeting the areas considered to present the highest risk of contamination.

 

Environmental Audit Assessments

Detailed Site Investigation (Carnegie, Victoria)

ARC undertook a Detailed Site Investigation (DSI) of a former mixed industrial/commercial site to support completion of a statutory Environmental Audit.  The site was subject to an Environmental Audit Overlay with a planning permit in place to allow for high-density residential development.

The investigation included a thorough site history review followed by an assessment of soil and groundwater.  Geoprobe drilling rigs were used to drill soil bores and groundwater monitoring wells within existing site buildings.  A Statement of Environmental Audit was achieved within three months of commencement and ARC developed an Environmental Management Plan to manage residual contamination.

 

Detailed Site Investigation (Port Melbourne, Victoria)

ARC undertook a Detailed Site Investigation (DSI) of a former industrial/commercial site to support completion of a statutory Environmental Audit.  The site was subject to an Environmental Audit Overlay with a planning permit in place to allow for high-density residential development.

The investigation included a comprehensive a thorough site history review and an in depth review of completed environmental audits in the area followed by an assessment of soil. Due to the presence of an occupied commercial building, a hand auguer was used to advance soil bores within the site buildings. The Environmental Audit process is currently ongoing at the Site.

 

Property Transaction Environmental Assessments

Detailed Site Investigation .(Tullamarine,  Victoria)

ARC undertook a Detailed Site Investigation (DSI) of a former mixed industrial/commercial site to support completion of a statutory Environmental Audit.  The site was subject to an Environmental Audit Overlay with a planning permit in place to allow for high-density residential development.

The investigation included a thorough site history review followed by an assessment of soil and groundwater.  Geoprobe drilling rigs were used to drill soil bores and groundwater monitoring wells within existing site buildings.  A Statement of Environmental Audit was achieved within three months of commencement and ARC developed an Environmental Management Plan to manage residual contamination.

 

Environmental Site Assessment (Brunswick East, Victoria)

ARC undertook an Environmental Site Assessment of a textile warehouse subject to an Environmental Audit Overlay (EAO) prior to commencement of a sale campaign aimed at residential developers given the location of the site in a major growth corridor for high-density apartments.

The investigation included a desktop review of the site history and soil assessment scoped to provide suitable information to a prospective purchaser of the site.   Comprehensive analysis of soil samples was required to characterise fill materials identified within a former clay quarry covering the majority of the site.  Results were compared to both site suitability criteria and IWRG621 soil classification thresholds to provide information for potential redevelopment of the site for residential land use including construction of basement parking.

 

Preliminary Site Investigations (PSI) / Phase 1 Environmental Site Assessments (ESA)

Preliminary Site Investigation (Carnegie, Victoria)

ARC undertook a Preliminary Site Investigation (PSI) of a former cement and lime manufacturing facility to assess the future environmental assessment requirements to allow for a future residential development.

The investigation included a desktop review and site inspection with recommendations given for the level of environmental assessment in accordance with the Department of Sustainability and Environment’s (DSE) Potentially Contaminated Land, General Practice Note (2005).

 

Preliminary Site Investigation (Carnegie, Victoria)

ARC undertook a Preliminary Site Investigation (PSI) of a residential property prior to development as a Childcare Centre.

The investigation included a desktop review, site inspection as well as a limited surface soil assessment, in order to close out any potential issues identified.  The site was subsequently found to be suitable for the proposed childcare centre and a children’s services soil assessment summary report was submitted to the Department of Education and Training.

 

Preliminary Site Investigation.. (Coburg North, Victoria)

ARC undertook a Preliminary Site Investigation (PSI) of a commercial/industrial property prior to development as a commercial food processing facility.

The investigation included a desktop review and site inspection, and the site was subsequently found to be suitable for the proposed commercial food processing facility and the report was submitted to the Council.

 

Coburg North PSI

Waste Soil Classification

Soil Categorisation (Preston, Victoria)

ARC undertook soil characterisation of stockpiled soils generated from Underground Petroleum Storage System (UPSS) upgrade works at an operating service station.

ARC had previously undertaken an ESA at the site to assist in characterising the subsurface.  The soil characterisation works included sampling of on-site stockpiles in accordance with the IWRG702 Soil Sampling guidance for off-site soil disposal.  Laboratory results were compared to the IWRG621 Fill threshold and a classification letter was prepared for the receiving facility within 24 hours of sampling.

 

Soil Characterisation (Somerton, Victoria)

ARC undertook soil characterisation of stockpiled soils generated from utility excavations during construction works at a commercial/industrial development Site.

The soil characterisation works included sampling of on-site stockpiles with no concentrations above the IWRG621 Fill threshold identified. The stockpiled soils were classified as ‘Fill Material’ for off-site disposal in accordance with EPA Publication IWRG621.

 

Acid Sulphate Soil (ASS) Assessments

Environmental Site Assessment (Berwick, Victoria)

ARC undertook an Environmental Site Assessment (ESA) of a rural property to meet the council planning permit conditions for a mixed residential and commercial development with childcare facility.

The scope of works included a soil and groundwater assessment with a comprehensive Acid Sulfate Soils (ASS) undertaken.  ARC were required to assess and characterise fly tipped soil/rubble stockpiles for future removal from the site.

 

Validation and Remediation

PSI and Site Remediation and Validation (Yalgoo, Western Australia)

ARC initially undertook a Preliminary Site Assessment (PSI) at an active DAFWA depot for divestment which identified unacceptable soil contamination.  Subsequently, ARC completed Site Remediation and Validation works which provided a “Decontaminated” classification by the Department of Environment Regulation (DER).

The project included an initial desktop review, site inspection and limited soil investigation that identified hydrocarbon impacts in two localised areas of waste oil stained soils.  ARC supervised removal of the impacted soils and undertook sampling to validate the decontamination.

 

Asbestos Assessment & Site Management Plan (SMP)

ARC consultants have undertaken several asbestos assessments including a former timber mill that a recently completed ESA confirmed that asbestos was present and indicated that the asbestos posed an unacceptable health risk. Prior to the light industrial redevelopment of the site and in accordance with WA Department of Health (DOH) guidelines, a Site Management Plan (SMP) was completed. The SMP detailed the excavation, removal and validation of asbestos-containing materials (ACM) in one portion of the site, and geo-fabric capping of non-friable ACM in a separate portion. In accordance with the SMP, a memorial was added to the land title for future management of capped areas.

Emergency Response

ARC consultants undertook an assessment of soil, groundwater and explosive atmospheres following a release from a high-pressure underground hydrocarbon fuel pipeline in a residential/commercial setting.

The installation of groundwater monitoring wells delineated the Light Non-Aqueous Phase Liquid (LNAPL) and dissolved phase hydrocarbon plumes. LNAPL hydrocarbon removal was undertaken through multi-phase extraction and a mobile and permanent skimmer system.

UPSS Assessment & Management

ARC consultants have undertaken multiple Environmental Site Assessments (ESAs) for the major Australian petroleum retailers in every state in Australia.

One example involved supporting a retail operator in assessing impacts from historical Underground Storage Tank (UST) losses. This was a long-term, ongoing project where we undertook soil and groundwater investigations, the delineation of Light Non-Aqueous Phase Liquid (LNAPL) and dissolved-phase petroleum plumes, as well as soil vapour sampling and quantitative risk assessment. We also undertook soil validation upon the removal of the primary source UST and associated pipe works.

UPSS Tank Removal & Validation

ARC has undertaken multiple Tank Excavation Assessments (TEAs) for Australia’s major petroleum retailers and other industrial operators across all states of Australia.

One example involved soil validation, waste soil classification and clean fill material verification during the replacement of a retail site’s Underground Storage Tanks (UST) and its associated pipe works. This was a long-term, ongoing project also involving soil and groundwater investigations, the delineation of Light Non-Aqueous Phase Liquid (LNAPL) and dissolved-phase petroleum plumes, soil vapour sampling and quantitative risk assessment.

Environmental Licence Compliance

ARC consultants conducted annual groundwater monitoring and reporting requirements at multiple fertiliser distribution facilities for an international commodities company.

We provided training, procedures and on-going support for site personnel to conduct surface water sampling. ARC consultants also assisted in Works Approvals and development of Environmental Improvement Plans (EIPs) to assist the client in complying with licence conditions.