On a tip from Tyl, I checked the City of Riverside building permits and found...
The location is 3878 Market Street in downtown Riverside, near the 215/60/91 interchange. The permit was issued on October 27th, so it may already be under construction.
(24) TESLA LEVEL 3 CHARGING STATIONS: (2) ACCESSIBLE ON THE GROUND FLOOR PARKING GARAGE (22) ON TOP LEVEL OF PARKING GARAGE ADD A NEW 2500AMP ELECTRICAL SERVICE PANEL
The location is 3878 Market Street in downtown Riverside, near the 215/60/91 interchange. The permit was issued on October 27th, so it may already be under construction.