We were recently contacted, as we often are by a previous client to assist them with a Housing Development project which resulted in them saving approximately $450,000. They had a SEPP 55 Preliminary Site Investigation, a Detailed Site Investigation (DSI), and a Remedial Action Plan (RAP) undertaken by another company and were very concerned with the expected cost for the Contaminated Site Remediation which was in excess of $600,000. As the project was to supply a lower cost housing alternative for the less privileged the cost was of particular concern. Upon review of the documentation in the previous reports it became apparent that the site had not been characterised correctly in relation to the extent of the potential contamination along with its waste classification in relation to the leachate potential of the contaminant (in this case Lead). This resulted in an overestimation of the amount of material to be disposed of from the site and an incorrect waste classification of the material to disposed of which placed it in the highest waste category of Hazardous. These two factors resulted in the very high estimated cost for the site remediation.
Anderson Environmental undertook Geotechnical Drilling of the site with a combination of solid flight and direct push techniques to characterise the lateral and vertical extent of the contaminated material which was present. Laboratory analysis utilised the Toxicity Characteristic Leaching Procedure (TCLP) to determine the leachability of the contaminant. This test is to determine the Waste Classification of the material which resulted in it being classified as Restricted Solid Waste resulting in a much lower site remediation cost than Hazardous Waste.
With the accurate information from the Geotechnical Drilling and Site Characterisation along with the correct Waste Classification a Phase 2 Environmental Site Assessment (Detailed Site Investigation) report and Remedial Action Plan (RAP) was written. This resulted in less contaminated material to be disposed of at a lower waste classification rating thus significantly reducing the site remediation cost.
The client was extremely pleased with the project outcome and the saving of $450k which resulted in a huge cost saving for an extremely viable project outcome.
As Environmental Consultants servicing Sydney, Brisbane and Melbourne we have full time experience since 1992. We assist clients with providing services covering SEPP 55 (Preliminary and Detailed Site Investigations) Remedial Action Plans (RAP), on-site Remediation and Site Validation and Closure. We are often undertaking Risk Assessments for Pre-Purchase Inspections for clients before the purchase of development sites. Please give us a call or contact us via the “Contact Us” page of our website so we can address your specific project requirements.
At Anderson Environmental we are often asked by our clients to provide advice early on in the development assessment process. Often this commences even before a client decides to purchase a property and it is generally the larger and more experienced property developers who know the value of getting a thorough Due Diligence Pre-Purchase Inspection undertaken. Often we are advising client’s on properties in the millions and have recently advised a client on a 10 million dollar property before they decided to purchase. The viability of any project is critical to assess early on in the project planning process.
With the implementation of the new Biodiversity Conservation Act 2016 (BC Act 2016) there can be significant offset costs for offsetting the clearance of native vegetation and these costs are significantly higher than they have been previously. In certain cases where there are Critically Endangered Ecological Communities or Critical Habitat for Endangered Species there may be a Significant And Irreversible Impact (SAII) which cannot be offset thus leasing to a significant limitation for any development. In addition consideration must be given to if the site contains mapped areas of Outstanding Biodiversity Values.
So what is the role of a Pre-Purchase Ecological Inspection ?
Most often a Due Diligence Pre-Purchase Inspection for potential Ecological issues can involve background searches and a scoping site inspection to identify any potential issues. Many clients however request a more detailed assessment of the site by way of a 5-part Test of Significance and/or Biodiversity Development Assessment Report (BDAR). These are more detailed reports which can form part of a Statement of Environmental Effects to support the development application. The more detailed the assessment, the more accurate the information available for planning.
Project success starts very early on by determining whether a project is a “Go” or “No Go” and Due Diligence early on (often even before the purchase of the property) is critical in such a determination. It is important for working out risks and to provide a sound cost benefit analysis.
As experienced Environmental Consultants with experience since 1992 we assist our clients with a wide range of Ecological Assessments.
Why not give us a call on 1300 302 507 to discuss your next project.
As of the 24th November 2019 the “Seven-Part Test Significance” will no longer exist. The new “Five-Part Test” of Significance” will be in place as of 24th of November 2019. The last of the Interim Designated areas will no longer apply and the Biodiversity Conservation Act (2016) will be the legislation applying to all Local Government Areas. It is important for clients to keep this in mind when they are preparing their development applications as there is a limited time to lodge under the old legislation. The last of the Interim Designated Areas are;
City of Campbelltown;
City of Penrith;
City of Fairfield;
City of Hawkesbury;
City of LIverpool;
City of Wollondilly.
The final date for lodgement of all development applications in these Local Government Areas under the old legislation will be the 24th of November 2019.
As fully qualified and certified BAM Assessors we can assist you with your next project. Please give us a call on 1300 302 507 to discuss your project as careful planning is important early on in the project plan.
At Anderson Environmental we are often asked by our clients to provide advice early on in the development assessment process. Often this commences even before a client decides to purchase a property and it is generally the larger and more experienced property developers who know the value of getting a thorough Due Diligence Pre-Purchase Inspection undertaken. Often we are advising client’s on properties in the millions and have recently advised a client on a 10 million dollar property before they decided to purchase.
So what is the role of a Pre-Purchase Due Diligence Inspection for potential contamination ?
Most often a Due Diligence Pre-Purchase Inspection involves a combination of reviews of existing records from both the site and its surrounds combined with a walk over site inspection. For the assessment of contamination risk in accordance with State Environmental Planning Policy (SEPP 55) and to manage potential risks when purchasing a property it is important to consider the history of a site before purchase. Many sites will not have a known history however this does not result in no risk of contamination. As such it it important to utilise experienced professionals to undertake a site visit and background searches as part of a formal Preliminary Site Investigation (PSI). Neighbouring sites also have to be considered as contamination can migrate from neighbouring sites as above ground, through the soil or from groundwater contamination. Generally the assessment area should be an area of 300 metres from the property boundary in all directions. This is due to the potential for contamination to migrate off adjoining sites which have been used for potentially contaminating activities or underground by way of the groundwater table.
Often due to the potential risk from contamination it is important to undertake sampling of the soil or groundwater prior to purchase for high risk sites.
Please give us a call before completing your next purchase for your Due Diligence Contamination Risk Assessment.