Vacuum Excavation

We work faster and safer with vacuum excavation and potholing. Our crews work more efficiently with less risk exposure using this low-impact approach to underground excavation, as well as saving our customers time and money.

Loy Clark Construction owns and operates several vacuum excavation units that perform a wide range of duties in the Portland metro and Washington region. Duties include:

  • Utility pole holes
  • Bore mud removal
  • Small and large pit excavation
  • Utility potholing
  • Vault clean-outs
  • Storm drain clean-outs
  • Alternative method to mechanical trenching
  • Safely excavate around existing utilities to avoid damage

Vacuum Excavation Benefits

Our fleet of vacuum excavation trucks and trailers excavate native fill material down to existing utilities. Vacuum excavating can verify the location of conflicting utilities and can be used by engineers looking to design new utilities around existing infrastructure. Many of our units have an on-board core saw, making utility locating possible in hard surface locations.


The vacuum excavation fleet at Loy Clark consists of 16 hydrovac units and is complimented with an assortment of trailer mounted vacuum units. Our trailer mounted units can perform the same functions as the trucks, including HDD mud removal, and are able to get to areas that are less accessible to the large trucks.

Hire our crews on a daily or weekly basis, or talk to us about how we can support large, long-term projects.