Locator/GPR Services

Subsurface Utility Engineers, LLC

Hire/Schedule Service +1-808-284-2538

Precision Mapping. Risk Reduction. Smarter Infrastructure.

At Subsurface Utility Engineers, LLC, we provide specialized subsurface investigation and utility engineering services designed to protect infrastructure, reduce project risk, and improve construction accuracy. Serving clients across Hawaii, California, and the Pacific region, our team delivers reliable data you can build on with confidence.

Our Services

Subsurface Utility Engineering (SUE)

We provide comprehensive Subsurface Utility Engineering (SUE) services in accordance with industry standards such as ASCE 38. Our SUE solutions help identify, map, and manage underground utilities before excavation begins.

Capabilities include:

  • Utility designation (horizontal mapping)
  • Utility location verification
  • Risk assessment and conflict analysis
  • Engineering-quality deliverables

Ground Penetrating Radar (GPR) Scanning

Using advanced GPR technology, we detect and map non-metallic and buried subsurface features that traditional locating methods may miss.

Applications:

  • Utility locating (plastic, concrete, fiber optic lines)
  • Concrete scanning (rebar, post-tension cables, voids)
  • Slab-on-grade and structural analysis
  • Archaeological and environmental surveys

Electromagnetic (EM) Utility Locating

We utilize electromagnetic locating equipment to trace metallic utilities, including power, gas, and communication lines.

Benefits:

  • Accurate horizontal positioning
  • Complements GPR for complete subsurface mapping
  • Fast and efficient field deployment

GPS / GNSS / RTK Surveying

Our high-precision positioning services provide centimeter-level accuracy for mapping and construction as-builts.

Services include:

  • Utility mapping and GIS integration
  • Underground infrastructure data collection

🗺️ Utility Mapping & GIS Integration

We deliver detailed, digital mapping solutions that integrate seamlessly with your project workflows.

Deliverables:

  • CAD-requested files
  • GIS-compatible datasets
  • Georeferenced utility maps
  • As-built documentation

Concrete Scanning & Structural Imaging

We perform non-destructive testing to identify embedded objects and structural elements before cutting, coring, or drilling.

Detection includes:

  • Rebar and post-tension cables
  • Conduits and embedded utilities
  • Voids and structural inconsistencies

🌐 Infrastructure & Construction Support

We support excavation contractors, city, county, state, federal and military with accurate subsurface intelligence throughout the project lifecycle.

Use cases:

  • Pre-construction planning
  • Utility conflict avoidance
  • Design validation
  • Excavation safety

Service Areas

We proudly provide services throughout:

  • Hawaii (Oahu, Maui, Kauai, Big Island)
  • California
  • Pacific Territories, including:
    • Guam
    • American Samoa
    • Northern Mariana Islands (Saipan)
    • Palau
    • Marshall Islands
    • Federated States of Micronesia
    • Cook Islands

Our regional expertise allows us to navigate unique terrain, environmental conditions, and infrastructure challenges across island and coastal environments.

Industries We Serve

  • Civil Engineering
  • Construction & General Contractors
  • Utility Companies
  • Government & Municipal Agencies
  • Environmental & Geotechnical Firms (Limited)
  • Telecommunications & Infrastructure Developers

Why Choose Subsurface Utility Engineers, LLC?

  • ✅ Industry-compliant SUE practices (ASCE 38 standards)
  • ✅ Advanced technology (GPR, GNSS, EM locating)
  • ✅ Experienced field professionals
  • ✅ High-accuracy data and reporting
  • ✅ Strong presence in Hawaii, California, and Pacific regions
  • ✅ Commitment to safety and “Call Before You Dig” best practices

Safety & Compliance

We prioritize safety in every project and actively support the 811 “Call Before You Dig” program to prevent utility damage and ensure safe excavation practices.

Let’s Build with Confidence

Whether you’re planning, designing, or excavating, Subsurface Utility Engineers, LLC provides the data and expertise you need to move forward safely and efficiently.

Request Services

Contact us today to schedule a consultation or request a quote for your next project. Subsurface Utility Engineers, LLC+1-808-284-2538

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