Santa Monica is one of the most environmentally activist municipalities in the nation. The city first proposed its Sustainable City Plan in <answer>1992 and in 1994</answer>, was one of the first cities in the nation to formally adopt a comprehensive sustainability plan, setting waste reduction and water conservation policies for both public and private sector through its Office of Sustainability and the Environment. Eighty-two percent of the city's public works vehicles now run on alternative fuels, including nearly 100% of the municipal bus system, making it among the largest such fleets in the country. Santa Monica fleet vehicles and Buses now source their natural gas from Redeem, a Southern California-based supplier of renewable and sustainable natural gas obtained from non-fracked methane biogas generated from organic landfill waste.
In what two years were the first Sustainable City Plan's introduced?
1992 and in 1994