Our fleet emissions were reduced by 16% in 2020. Since 2010, we have reduced GHG emissions from our total collection and support fleet by 43% for every 1,000 miles driven. We’ve achieved these reductions through logistical efficiencies, transitioning to natural gas vehicles, and by increasing our use of renewable fuel. To make progress in each of these areas, WM continues to develop and deploy technology solutions and programs to reduce emissions from our operations while also engaging in policy discussions at the federal and state level and supporting strategies to reduce emissions associated with our industry.
In January 2020, a novel strain of coronavirus was declared a Public Health Emergency of International Concern and was subsequently declared a global pandemic in March 2020. COVID-19 began to impact our business in March 2020, affecting most geographies and across a variety of our customer types throughout the rest of the year. On October 30, 2020, we completed our acquisition of Advanced Disposal Services (ADS), which increased our number of employees, facilities and assets. Results of these impacts may be reflected in the 2020 data below. Further details on year-over-year changes may be found in the applicable sections of WM’s ESG Resource Hub.
Lowering Our Operational Footprint
The charts on the following page represent 100% of WM’s Scope 1 and 2 GHG inventory, which is third-party verified and reported to CDP. These emissions make up the numerator portion of our environmental goal to reduce, avoid or offset four times the emissions we generate in our operations, represented in the part of the 2020 bar chart that is above the “0” line of the How We Measure Our 4X Goal infographic. For a discussion of the protocols that govern these calculations, please see our Carbon Footprint Calculation Methodology.
We use the modified 100-year global warming potentials (GWPs) promulgated by the U.S. EPA. Pertinent to our carbon footprint, our Scope 1, 2 and 3 emissions calculations use the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (FAR) GWP. However, prior to 2019 our Scope 2 emissions from purchased electricity used the IPCC Second Assessment Report (SAR) GWP.