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Vacuum Excavation & Test Holes in Delaware

Air and hydro vacuum excavation from New Castle County to Sussex.

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Vacuum excavation and test holes in Delaware

Trinity Subsurface exposes buried utilities with air and hydro vacuum excavation across Delaware, from New Castle County to Sussex. A test hole confirms the exact depth, size and material of a line and records it as ASCE 38 Quality Level A data, so designers and contractors can build around it with confidence. We also slot trench and daylight utilities around live lines.

  • Utility Locating: Our team offers full service utility locating for your site that goes beyond 811 services that only locate public utilities. Protecting all of the utilities at your site is crucial prior to excavation, installation, boring or drilling. We use a combination of electromagnetic (EM) scanning, ground penetrating radar (GPR) and additional technologies to mark and map out existing utility lines. We provide high-accuracy with detailed maps and notes. Prevent damages, save time, and avoid unexpected costs.
  • Utility Mapping: Our team provides maps in a variety of formats, including PDFs, KMZ and CAD files. In addition, we can capture accurate GIS data points of underground utilities that can be integrated into existing data sets for improved project planning, communication and facility management.
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Why test holes matter

EM and GPR tell you where a line runs, but not always how deep it is or what it's made of. A vacuum-excavated test hole exposes the utility without damaging it, so its depth, size and material can be measured and surveyed. That Quality Level A data lets engineers resolve conflicts during design and lets contractors dig, bore or drive piles next to live lines with confidence.

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Technology and Methodology

Our team relies on a variety of technologies and methods to fully examine your site. We use electromagnetic scanning, ground penetrating radar and more to get the best info on subsurface utilities and underground infrastructure.

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Full Suite of Services

Our team offers multiple services to support your projects on top of utility locating and concrete scanning. Ask us about additional utility investigation services we can offer for further support beyond GPR locating and scanning.

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Building Relationships

We aim to provide ongoing support for your current and upcoming projects. Whether you're just starting design or running into unexpected utilities during construction, we'll investigate and assist with any step of your project.

AREA CONTACTS

Delaware - (302) 407-3697

DELAWARE PROJECTS

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HOSPITAL - MILFORD: EIGHT TEST HOLES, SURVEYED WHILE OPEN

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GAS MAIN - ELLENDALE TO SLAUGHTER BEACH: TEST HOLES ABOUT EVERY 300 FT

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ENVIRONMENTAL SITE - DOVER: QUALITY LEVEL A TEST HOLES FOR MONITORING WELLS

Delaware vacuum excavation FAQs

What is a test hole?

A test hole, or pothole, is a small excavation made with air or hydro vacuum equipment to expose a buried utility without damaging it. It confirms the line's exact depth, size and material, recorded as ASCE 38 Quality Level A data.

Can your surveyor record the test holes while they're open?

Yes. We coordinate with the project surveyor so each exposed utility can be located while the hole is open, then we backfill and restore the surface.

Which areas of Delaware does Trinity Subsurface cover for vacuum excavation?

All of Delaware, from Wilmington and New Castle County through Dover and Kent County to Sussex County. Call (302) 407-3697.