Northern Territory NDD Hydro Excavation & Jet Cleaning

Precise Underground Excavation Without Damaging Services
Our 600 bar or 8500 psi hydro excavation truck exposes underground utilities safely. Used across Defence, government, and commercial sites throughout the NT.
Gold Medal Services plumbing van parked roadside

Underground service strikes delay projects, blow budgets and create safety incidents. Mechanical excavation near critical infrastructure carries significant risk, even with site plans and locators. Assets shift over time, maps become outdated and unmarked services exist.

Non-destructive digging removes this risk.

What is NDD?

NDD uses high-pressure water (up to 600 bar or 8500 psi) to break up soil, loosen sand and compacted surfaces. An industrial vacuum simultaneously removes the excavated material. This exposes underground utilities without damaging them.

Vacuum excavation truck with workers and traffic cones

Our Equipment

We operate a combination vacuum and hydro excavation truck designed for Northern Territory conditions.

Specifications:

  • 600 bar or 8500 psi pump (cuts bitumen, stabilised sand and trees)
  • 6-inch vacuum hose
  • Specialty chain flail (cuts tree roots and concrete slurry up to 800mm diameter)
  • Six specialty nozzles for different applications
  • Cleans bore piers up to 15 metres deep
Worker monitoring industrial vacuum truck at utility site

Where We Work

Defence facilities, NT Government sites, local government infrastructure, commercial developments and industrial projects. We understand the security protocols and compliance requirements for active sites.

Service van in industrial yard with large pipes

NDD Applications

Infrastructure Repairs and Upgrades

Repair or upgrade sewer, stormwater and water infrastructure without disrupting surrounding services. We excavate precisely where needed and minimise site restoration.

Asset Location and Exposure

We combine NDD with our GPR and Certloc capabilities to locate and safely expose underground assets before construction work begins.

Post Hole Digging and Foundation Work

Install safety barriers, signage, or foundation posts near underground services without risking damage to nearby utilities.

Pit Cleaning and Maintenance

Our jet cleaning removes sediment and debris from stormwater pits, sewer access points and drainage infrastructure. Six specialty nozzles clear blockages without damaging aging infrastructure.

Before
Sludge buildup inside concrete drainage pipe
During
Rocks and debris inside a narrow concrete drain
After
Inside view of a corroded metal pipe

Why Choose NDD Over Mechanical Excavation?

Lower Risk

Mechanical excavation near underground utilities can damage cables, pipes and conduits. This triggers emergency repairs, project delays, and safety incidents. NDD removes this risk.

Better Value

Service strikes cost tens of thousands in emergency repairs and delay penalties. NDD has a higher hourly rate but eliminates catastrophic risk.

Precision

We work within centimetres of critical infrastructure. This exposes utilities without disturbing them and reduces site restoration requirements.

Compliance Documentation

Our AroFlo job management system provides photographic evidence, compliance records, and detailed reporting for ITP requirements.

Hydro excavation truck digging trench on construction site

Why Choose Gold Medal Services for NDD?

No Underground Service Strikes

High-pressure water exposes utilities safely

Defence and Government Experience

22+ years on Defence facilities and NT Government sites

All Capabilities In-House

NDD, GPR, Certloc location, and CCTV inspection with no contractor coordination

Equipment for NT Conditions

600 bar pump handles Territory soil, stabilised sand and trees

Less Site Disruption

Precise excavation reduces site footprint and restoration requirements

Full Compliance Documentation

ITP-compliant reporting, photographic evidence, and audit-ready records

Experienced NT Operators

With 30+ years of project experience

NDD Hydro Excavation & Jet Cleaning Questions

We have vacuumed from a depth of 15 meters, a crane was required to lift the vac hose.
The capacity and capability of the truck vacuum and pumps. Our trucks operate at 8500 psi and 30 litre per minute. When hiring an NDD consider the additional productivity gains of a high performance jetting pump. Youtube comparison https://www.youtube.com/watch?v=wLjf1JTGUFQ .

Trusted by leading organisations across the Northern Territory

For 30+ years, government agencies, Defence facilities, and commercial organisations have used Gold Medal Services for complex underground work. 98% on-time completion, zero LTI safety incidents and 100% compliance across all projects.

Talk to Us About Your Next Project

Discuss how NDD hydro excavation can reduce underground risk on your next project.
Gold Medal Services NT

Capability Statement