Utility & Pipe Locating using GPR in Los Angeles, CA

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14801 S. Avalon Blvd., Gardena, CA 90248

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Penhall Technologies Scanning Analyst Robert


  • Worked in construction since 2006
  • State certified electrician
  • OSHA 10, 30
  • 3 years working industrial maintenance
  • Loves fitness, fishing, and playing dominoes

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Avoid hitting gas and electrical lines when restructuring a driveway

Locate utilities in parking lotJust outside of Pasadena, a local fire station needed to restructure the layout of their driveway. Prior to breaking and removing the concrete they wanted to first identify any gas lines or electrical cables to avoid damaging those lines. Penhall Technologies arrived with Radio Detection and GPR locating equipment and marked all underground hazards.

Locate all underground utilities before installing new perimeter lighting

Prior to core drilling, locate all subsurface utilitiesAt one of the world’s largest refreshment plants, a utility survey was performed by Penhall Technologies before core drilling (60) holes for new perimeter lighting. Per the plants’ access requests, GPR analysts and operators performing the work were asked to submit a background check and take a four hours safety course.

Discovered water line when locating other utilities

Locate and mark leach lines buried in the groundA homeowner in Culver City called Penhall Technologies after purchasing a new property and seeing Call Before You Dig signs. The homeowner wanted to find and mark leach lines of unknown lengths. Penhall Technologies performed the survey and found the leach lines and also discovered an unknown water line.

Find subsurface utilities before breaking and removing concrete

Find subsurface utilities before breaking and removing concreteNew tenants moved into a commercial building in El Segundo and wanted to repurpose an oversized parking lot into a grassy lunch area. Before the breaking and removal of concrete took place, the tenants called Penhall Technologies to locate and mark all subsurface utilities. Penhall marked the found gas, water, and electrical lines and also documented those findings on a written field report which was given to the customer for their records.