Emissions values presented for the selected year have been re-calculated by EPA to display a consistent time-series using Global Warming Potential (GWP) values updated for 2013. Click here to learn more.
The Southern California Gas Company - Aliso Canyon facility's actual 2015 emissions were higher than those reported to the GHGRP. The GHGRP provides well-vetted average emission factors to calculate emissions. The facility followed these GHGRP calculation methods for 2015 reporting. Actual emissions differ from those reported due to an exceptional leak event. See California Air Resource Board's Aliso Canyon Natural Gas Leak webpage for more information.