Vacuum Excavation is an alternative form of excavation which can be used  in sensitive hand dig areas. 

​Our vacuum excavation service provides an intrinsically  SAFE method of avoiding dangerous and expensive utility strikes by removing material from awkward or sensitive areas thus leaving any services or buried utilities, plant or equipment intact and undamaged.
All engineers are health and safety trained and carry CSCS cards.

Hydro Method
This system utilizes approximately 3000psi delivered through a cyclonic turbo nozzle. The circular motion of the jetting nozzle ensures the pressure is not concentrated enough to damage any buried utility or equipment. If buried utilities, roots or equipment are present, they are simply left clean and undamaged as the water finds its own path around them in the surrounding geology, leaving a slurry/wet mix. The vacuum unit clears the excavation of all water and materials, ready for disposal in a sealed tank. 
The spoils are not suitable for back filling. The hydro method is very effective in all geology, and around 50-100% faster than conventional hand digging.
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​Air Spade/Pick Method
This system utilizes air/pneumatics by compressing and jetting into the ground at speeds of up to 1450 mph. Once in the ground, the air decompresses and reverts to atmospheric pressure, thus breaking down the geology allowing safe removal with our vacuum system or the spoils can be used for backfilling. 
Air is compressible, meaning upon meeting non-pervious objects and materials, it travels around them leaving them undamaged and intact. 
This also means that unlike the hydro method, air/pneumatic excavation is not suitable in cohesive geology such as clay and PFA. 
For safety, the hydro method must be used in these geologies.
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