"A greenhouse gas emissions target refers to the emission reduction levels that states set out to achieve by a specified time. Currently, 23 states and the District of Columbia have implemented statewide greenhouse gas targets. Following the United States announced withdrawal from the Paris Climate agreement, 20 states have committed to upholding the U.S. commitment of reducing emissions 26 to 28 percent below 2005 levels by 2025 by joining the United States Climate Alliance. California enacted targets in 2005 for reducing emissions: 2000 levels by 2010, 1990 levels by 2020, and 80% below 1990 levels by 2050. In 2015, California issued an interim emissions reduction goal of 40% below 1990 levels by 2030."

- Center for Climate and Energy Solutions, https://www.c2es.org/

Consistent with the State's regulations, Corona's goal is to reduce emissions to 1990 levels by the year 2020. Formulas for greenhouse reduction goals were provided by LSA. Corona's target is calculated as:

15% below 2008 levels by 2020
49% below 2008 levels by 2030
66% below 2008 levels by 2040