There was an earthquake half the energy of the design limit, 100 miles away, 70 years ago. So, greater than 0, less than 1, consult your seismologist. (The 10

There was an earthquake half the energy of the design limit, 100 miles away, 70 years ago. So, greater than 0, less than 1, consult your seismologist. (The 100 miles away is the important part, the distance from the fault is critical.)