Excavation works form a large portion of civil engineering projects worldwide. The most common practice is to dispose of the material excavated and to purchase virgin material for backfill purposes.
Ferrovial Agroman is leading the way in sustainable construction on our Heathrow site in line with the airport’s sustainability strategy “Heathrow 2.0”. With a total of 354,000m3 of material required to be excavated for the site’s development, Ferrovial Agroman has used CL:AIRE, an independent body that promotes sustainable remediation of contaminated land. CL:AIRE has developed a Code of Practice which provides a clear, consistent and efficient process to enable the re-use of excavated material without it being classified as a waste. This avoids following costly and time consuming waste controls such as applying for a Waste Permit.
In order to implement the Code of Practice, we have created a Materials Management Plan (MMP) which is based on an appropriate risk assessment. The plan demonstrates that use of material will not harm human health or pollute the environment.
On approval of the MMP, material loads are tracked from site to the storage area and upon return to site. As the material is stored off site, we visit the storage location regularly to ensure it is well maintained and segregated.
As a result, Ferrovial Agroman has eliminated 35,000m3 of waste material and therefore the purchase of the equivalent material along with saving over 9,000 tonnes of CO2 emissions.
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