An earthquake of magnitude 3.0 shook an area east of San Ramon shortly after 8 a.m. Friday, followed by two smaller temblors, according to the U.S. Geological Survey.
The epicenter of the first quake was near Velvetleaf Circle, according to USGS data.
Two additional, smaller quakes struck after the initial temblor. The quakes, 2.8 and 2.6 in magnitude, were detected minutes after the first quake…