In 2017, we changed our methodology for calculating Scope 3 emissions because the U.S. EPA stopped supporting the methodology we had previously adopted. Scope 3 emissions for business travel are calculated using “per vehicle-mile traveled” and “per passenger-mile traveled” emissions factors from the EPA’s Center for Corporate Climate Leadership guidance, published in 2018. Emissions from finished goods transportation are calculated using “per ton-mile” emission factors, according to the same guidance. In prior years, Scope 3 emissions were calculated based on fuel usage using the EPA’s “btu/ton-mile” and “GHG emissions per unit of fuel” emission factors. For the purposes of our 2020 reduction goal, we’ve revised the 2011 GHG baseline to apply the same methodology being adopted in 2017 to the baseline year. This increases our 2011 baseline year emissions from 507,216 metric tons CO2e to 761,980 metric tons CO2e, against which 2017 and future years in our 2020 goal period will be reported. This enables us to accurately compare GHG emissions for 2017 going forward to the 2011 baseline. We have not revised GHG emissions for 2012 through 2016.
Calendar year 2011 baseline value for solid waste-to-landfill has been restated to reflect: 1) the removal from the baseline of waste volumes attributed to the Aplicare business, divested by Clorox in calendar year 2017, and 2) the addition of the previously excluded waste stream, cafeteria waste sludge, to the landfill waste volume at our Lima, Peru, manufacturing facility.