I found pdf map on the El Dorado County Government website that shows two sites for Tesla Superchargers in El Dorado County. One in Placerville, in the Hangtown Village Square, which is right off highway 50, close to food and a few stores. This site appears to have been approved and a contract signed with Tesla. Although no construction has started yet that I can see. Another location is at Heavenly Ski Resort, which the map indicates they are still researching a location for the install. The map does not indicate when these were approved, but does indicated a targeted installation year though.
https://edcgov.us/uploadedFiles/Gov...ement/El Dorado County EV chargers 9-2014.pdf