Groundwater flows can greatly impede construction site progress. Construction Dewatering lowers the groundwater table so excavations can proceed unimpeded by those flows. A properly designed and installed dewatering program can control groundwater flows keeping a project on schedule.
Wellpoint dewatering involves jet drilling and manifolding a series of small diameter wellpoints ranging from 1.5”-3” in diameter along an excavation alignment or perimeter. Jetting can be effective to depths up to 25’ below ground surface. A vacuum pump is then positioned at one end of the manifold that pulls water out via the wellpoints. The groundwater then travels through the pump system into a separate discharge or recharge system.
Holocene is equipped with specialized hydraulic jetting equipment allowing us to perform wellpoint installation quickly, efficiently and safely. Furthermore, the small footprint of our equipment makes it manuverable in tight construction sites where larger equipment is not practical. We also conventionally auger or sonic drill wellpoints where ground conditions prevent the use of hydraulic jetting.
Holocene also own and operates a 4300 gallon water truck in support of our hydro jetting operations.
|14.5′||8′||Tower down: 8.5′|
Tower up: 25′
Short tower: 14′
* specifications are nominal and depths will vary depending on sub-surface conditions