Concrete Scanning, GPR, & X-Ray in Seattle, WA

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11001 East Marginal Way South, Tukwila, WA 98168

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Your local scanning expert

Penhall Technologies Scanning Analyst Mariah


  • BS in Geology from Western Washington University (2010)
  • MS in Archeological Prospection Shallow Geophysics from University of Bradford, Bradford, England (2014)
  • 2 ½ years of work experience in gold, silver and antimony exploration/mining in Idaho
  • OSHA 10 Certified
  • Experience with multiple 3D modeling software packages (Surfer, GemCom, Voxler, Leap Frog, ArcGIS, etc)
  • Enjoy kayaking, SUP boarding, camping, and hiking in the summer, and a good book or show in the winter

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Ground penetrating radar used to locate rebar and conduit before cutting a trench

Ground penetrating radar to scan for conduit and find rebarIn Shelton, WA, Penhall was requested to scan an area prior to performing a saw cut and removal of a 2′ x 10′ x 10″ concrete trench. We used ground penetrating radar to locate conduit and find rebar in order to ensure that it was safe to trench.

Concrete scanning used to locate hazards before core drilling

Concrete scanning to locate hazards before core drillingAt a location in Seattle, WA, Penhall used ground penetrating radar to identify hazards within a barrier rail. After scanning, it was now safe to core drill 50 holes to a depth of 18″.

Locate all obstructions before a large core drilling projects to ensure safety

gpr scanning used before core drillingFor this project, Penhall was asked to scan for obstructions in 13 different areas at a site in Seattle, WA.  We used GPR scanning in preparation for core drilling. The multiple scan areas were spread out over 10 floors on slabs up to 6” thick.