Seattle's Leading Ground Penetrating Radar Service Provider

Utility Locating, Video Pipe Inspection, Concrete Scanning & Industry Leading Deliverables

GPRS Serving Seattle

  • GPRS specializes in the location of underground utilities, concrete scanning and video pipe inspection. GPRS has an extensive nationwide network of highly trained and experienced Project Managers near Seattle and the surrounding area.

    We understand that your team’s safety depends on us providing a best in class service. When clients hire GPRS, they have peace of mind knowing that they have the most reliable technology on their project paired with a world class Project Manager who delivers the most accurate information available. GPRS leads the industry in providing outstanding service and cutting-edge technology, keeping projects on time, reducing safety risks, and putting relationships with our clients first. Our nationwide network of team members is committed to being your subsurface scanning solutions.


To ensure the overall timely success of you project, utility detection is critical to any construction project where a subsurface excavation is planned. If this critical first step is ignored, the risk for injury increases, budget overruns can multiply and your schedule can be delayed.

Video Pipe Inspection (CCTV) is a service used to inspect underground water sewer and lateral pipelines, VPI is a great tool for investigating cross-bores, structural faults and damages, and lateral line inspection.

With new build construction and renovation project, the likelihood of needing to cut or core concrete is high. There is an inherent risk of striking rebar, conduits, and post tension cables during the cutting or coring process. If a strict occurs, repair costs begin to add up, delays creep into your schedule and it creates a safety hazard for your employees.

The goal of the GPRS Deliverables Department is to deliver clear and understandable findings with each of our outputs from field markings to field sketches, KMZ files, or CAD drawings that provide 2D site plans or even 3D CAD models. In addition, upon the completion of every project, our customers receive a job summary that includes job scope information, site photos, description of site conditions, equipment used, and notes from the project.

GPRS Industry Expertise

Featured Projects in the Metro Seattle Area

GPRS locates utilities, scans concrete and provides video pipe inspections throughout Seattle and the state of Washington. We use cable avoidance tools to assist in locating buried electrical, water, gas, communication, sewer and storm drain lines in underground facilities. GPRS focuses on damage prevention and reducing the risk of injury to personnel and damage to utilities.


Concrete Imaging Technology Utilized To Locate Reinforcing Steel And Conduit Prior To Core Drilling – Seattle, WA

A large construction company had a project in West Seattle building a new apartment and retail complex. There was a need to install new floor outlets throughout the building, which meant concrete sawing and coring was needed. Prior to beginning the sawing and drilling processes, the contractor contacted Ground Penetrating Radar Systems of Washington (Portland) to scan the floors to locate the reinforcing steel and any conduit present. GPRS used a 1600 MHz antenna for the project that allowed for precise locating of the reinforcement/conduit. GPRS marked the reinforcing steel pattern and conduit locations directly on the floor using black permanent marker so the cutting and coring areas were clear prior to continuing the project. The general contractor had all the information needed to proceed with confidence, to drill and saw through the floor and install the new electrical outlets.

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GPRS Allowed Contractors To Avoid Damaging Structural Reinforcement

A General Contractor had a project within a parking garage. The scope of the project was to perform core drillings in multiple locations for placement of conduits. The drillers did not want to hit any rebar/reinforcement in accordance with the project’s requirements. Tensioned cables were present within slab so it was imperative for drillers to avoid the mentioned reinforcement. The General Contractor decided to contact Ground Penetrating Radar Systems after learning that they have been in business since 2001 and each technician has the experience of performing over 350 GPR surveys per year. GPRS was able to complete the investigation the next day and allowed the project to proceed without hitting any reinforcements. GPRS uses real time applications and were experienced enough to be able to locate all of the rebar in the proposed areas.

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CCTV Robotic Crawler System Waste Water

A valued customer was having flow issues within their waste pipes and was not sure exactly where the issue was occurring. The customer hired our CCTV camera inspection services department to use the robotic crawler camera system to determine where the issue was. The NASCCO certified project manager was able to access both ends of the pipe and determine at what linear footage there was an issue. The CCTV inspection services project manager used the device to crawl about 800 linear feet from one end of the pipe with no obvious issues found. The CCTV inspection services project manager then accessed the other end of the pipe sections and found the issue at hand. The customer was very pleased with our inspection services capabilities in being able to help locate their issue.

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Contact our Seattle team and our nearest project manager will contact you.

Serving Seattle, Spokane, Tacome, Vancouver, Olympia, Kent, Bellevue, Everett , Kennewick and Richland.

We also work in the following Washington counties King, Pierce, Snohomish, Spokane, Clark, Thruston, Kitsap, Yakima, Whatcom and Beton County.