QLA Subsurface Utility Engineering - S.U.E. 

QLAAir excavating provides QLA subsurface utility engineering (SUE) data by determining the precise vertical, horizontal, size and type of the utility for accurate planning and cross section of the project.

Vacuum Excavating

  • Air vacuum excavating provides subsurface utility engineering S.U.E Quality Level A data by determining the precise vertical, horizontal, size and type of the utility for accurate planning of the construction project.
  • This technology can provide engineers with accurate utility designation for proper information for PS&E’s (plans, specifications & cost estimates)
  • Our Services are very practical for subsurface exploration in congested areas, or areas where conventional excavation is not feasible. We can store up to 2 yards of backfill without having to stockpile fill.
  • With this system we have the ability to pothole in the tightest areas where conventional excavating cannot be utilized.
  • For Environmentally sensitive projects, we can excavate around roots of existing trees without damaging them.
  • Map utility pathways that may be related to contaminant migration.

QLAOur state-of-the-art air excavator is a key component to our subsurface investigation exploration. By using air for our digging tool, we’ve eliminated the destructive factor of excavating around utilities and other buried structures.

Through the use of our Air/Vacuum soil excavation systems, we safely expose or daylight utilities so that safe excavation or directional boring can proceed. Our Air/Vacuum technology teams are comprised of two people, a lead and a crewman/helper. The lead is a highly trained machine operator with utility installation experience in addition to being an expert in air/vacuum excavation operations. Our Air/Vacuum technology soil excavation system is safe and efficient, resulting in very minimal disruption to prepared surfaces.

QLAWe accomplish our work through a hole no larger than 12" X 12", and in some areas we operate through an 8" hole cored into the hard surface roadway. The vacuum excavation system utilizes kinetic energy in a high velocity air stream to penetrate, expand, and break up soil. The loosened chunks of soil and rocks are then removed from the hole with a powerful vacuum and are ready for quick backfilling. This system offers higher performance in most soils, which means greater efficiency and lower cost for our clients. In most cases, we close up the excavation with native soil, add select fill and pneumatically compact the hole in appropriate lifts. We then place a temporary patch using a cold patch product, which is an asphalt/polymer material considered acceptable in some states as a permanent patch. This process allows us to move through a project area with considerable speed. Municipal and state agencies give our work high praise because we leave behind a very small roadway patch that doesn't "roll out" or fail.



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