Subsurface Utility Locating Company Providing GPR & SUE Support Services
At 3 Thirteen Subsurface, our mission is to deliver accurate, dependable, and professional subsurface utility locating and SUE support services that protect infrastructure, enhance safety, and support informed project decisions. We are committed to providing precise underground data through disciplined processes, experienced personnel, and industry-leading standards of performance.
Our objective is simple: ensure every project is executed with clarity, confidence, and accountability.
Professional Underground Utility Detection Solutions
our core values
3 thirteen subsurface
Accurate. Reliable. Professional.
accurate detection. verified data. confident decisions.
Our services are built on accuracy, verification, and professional execution. From utility locating and Subsurface Utility Engineering (SUE) to hydro excavation, CCTV inspection, and ground penetrating radar (GPR), we deliver reliable underground intelligence that protects assets and minimizes risk.
Electromagnetic (EM) Utility Locating
Accurate detection of conductive utilities such as power, gas, and communications lines.UTILITY LOCATING
3 thirteen electronically locate utilities by either directly connecting to a conductive line to transmit a signal or by inducing a signal through the surface for detection. The method applied is determined by site conditions and tailored to the Subsurface Utility Engineering (SUE) Quality Level B.
Vacuum Excavation
Safely expose buried utilities for visual verification and depth measurements.POTHOLING & TRENCHING
Potholing involves excavating a small, non-destructive hole to visually verify underground utilities. This method is used when mission-critical information is required that electronic detection cannot provide—such as utility size, material, or exact depth. As part of SUE Quality Level A, potholing is the most precise method of verification available.
Ground Penetrating Radar (GPR)
Non-destructive technology for detecting non-conductive pipes, and conduits.GPR
Ground Penetrating Radar (GPR) transmits electromagnetic signals through materials such as asphalt, concrete, or soil to detect utilities, conduits, post-tensioned cables, and other subsurface features. GPR is especially effective for locating non-conductive lines where traditional electromagnetic methods may not apply.
CCTV Camera Pipe Inspection
We use high-definition CCTV cameras to inspect the interior of storm drains and sewer pipelines, identifying cracks, blockages, and structural damage quickly and safely.CCTV CAMERA INSPECTION
CCTV sewer and storm drain pipe inspections use a locatable camera to capture video assessments of line conditions. This method is effective for detecting cracks, root intrusion, blockages, and other structural or operational issues, providing clear data to guide repair and maintenance decisions.
Utility Depiction Drawings
Utility depiction converts field-verified utility locations into detailed CAD or GIS drawings, giving your team a reliable visual representation of underground systems.UTILITY DEPICTION
Once utilities are located, our survey team can deliver survey-grade CAD drawings of underground utility locations. We can tie into your existing site controls and adapt to any required standards, ensuring seamless integration with your project documentation and design process.
Utility Reporting
We deliver comprehensive utility reports that clearly document all identified underground utilities, including depths, locations, and field conditions for your project.UTILITY REPORTS
Accurate, easy-to-read, and detailed documentation is essential to the success of any project. Our deliverables include empty conduit mapping, vault location reports, and a range of precise documentation designed to support your design and project planning.
Snapshots
Trusted by Industry Leaders
Our team has had the privilege of working with some of the most recognized names in the construction and engineering industries. Our partners trust us for precise utility detection, reliable documentation, and responsive service that keep projects moving safely and efficiently.
Client Testimonials
“A company led by trusted individuals who truly care about their work and go above and beyond to deliver quality in every project.”
insights & resources
insights into the processes and technologies behind precise underground utility locating and mapping.
Explore our collection of articles and guides covering GPR technology, SUE standards, utility detection techniques, and more — designed to help you understand the science and strategy behind locating what lies beneath.
