The Survey will use state of the art technology to image and map the geological strata and potential faults of the Long Beach/Signal Hill area.

The technology used to image the subsurface geological strata uses specialized trucks to input acoustical energy into the ground. The acoustic waves generated are very subtle, but can penetrate deep into the earth. The different geological strata generate reflections as the acoustic wave passes by. These acoustic reflections can be detected by very sensitive and specialized recording devices called “Nodes” that are placed in the ground. The recorded data is downloaded and processed by highly sophisticated computer programs that generate a three dimensional image of the earth’s crust.

Yes. Multiple geophysical surveys have been conducted in the Long Beach/Signal Hill area in the past. The most recent survey was in Spring 2010.

The Node recording devices will typically be placed along streets within the public right of way in landscape areas, grass areas and tree wells. To place the Nodes, a 5 inch diameter hole is drilled approximately 8 inches deep. The Node is then placed in the hole and covered with soil and/or grass (see pictures). When the Nodes are removed, landscape and/or grass will be restored. Some Nodes may be placed on private property with the owner’s permission. The nodes will remain in place for approximately 4-5 months.

The survey trucks will operate mostly on public streets utilizing larger, commercial thoroughfares. The trucks may operate off street on commercial sites and vacant land with permission of the owners. The trucks create a momentary minor surface vibration when they input acoustic energy into the ground. The trucks will operate at any one location for 15 minutes or less. Technicians will monitor surface ground vibration with digitally recording meters whenever the trucks are operating.

The study will be done by NodalSeismic, LLC who owns and operates the specialized equipment required to obtain the survey data. The survey is sponsored by Signal Hill Petroleum, Inc.

The information obtained will provide an unprecedented understanding of the deeper geology and potential faulting in the area of the survey. The Survey team is working with several universities and government agencies and will share the survey data for academic and scientific research of potential faults. This information will also give a better understanding of additional oil resource potential of the Long Beach/Signal Hill area.

The next phase of project work is scheduled for first half of 2012. A final schedule will be issued (available on the Community Calendar) after all city and landowner permits are obtained. The project trucks will work on public streets typically Monday through Friday during normal business hours.

Please refer to our maps page.

The project team can be contacted during normal business hours at (562) 326-5186. Additional information, including schedule updates is available on the project blog . Emergencies can also be reported to Signal Hill Petroleum any time at (562) 595-6440.