Seismic testing occurring throughout Seal Bech starting today. You may feel tremors and shaking. 
Seismic testing is a form of scientific testing that is primarily used for two different but related purposes. It is used to predict the occurrence of earthquakes and it is used to discover natural gas reserves.
The seismic testing will help determine:The impact of possible earthquakes, near surface ruptures and liquefaction, Liquefaction study at no cost to the City, The magnitude of earthquakes from faults in the area of study, and Disaster preparedness .
Fo further information call (562) 424-1145
Address/Location
Seal Beach Police Department
911 Seal Beach Blvd
Seal Beach, CA 90740
Contact
Emergency: 9-1-1
Non-emergencies: 562-799-4100