Willmott Dixon has reduced its carbon footprint on construction waste disposal using GIS mapping software to create an isochrone map.
The contractor said it would normally select a waste management company based on the postcodes it covered, but this does not guarantee that it is the closest option and therefore the lowest in terms of carbon emissions.
Taking the isochrone map, Willmott Dixon transposed data from the Environment Agency onto it, which was then used to find a waste management firm that was based closer to the site, offering lower carbon emissions.
This showed that the company selected under the standard procedure was travelling 16km each way with around 18kg of CO2e released with each round trip.
The isochrone map then found a recycling facility just 3km away, which Willmott Dixon switched over to. The company said this switch resulted in a reduction of 15kgCO2e per round trip.