Air and Hydro Vacuum Excavation

RETTEW performed a complete subsurface utility mapping survey to determine the location of utilities within 50 feet of the path of a proposed fiber optic duct bank around a medical facility campus. As part of this work, RETTEW also surveyed all utility markings, buildings, surface features, and ground elevations to create a comprehensive base map. We then examined the proposed path for crossing utility conflicts. These locations were tallied and submitted to the client for review.

Following the client’s selection of the critical areas, we performed air and hydro vacuum excavation at those locations. Digging down to the target utility enabled RETTEW to document the crossing utility’s key attributes, including depth, size, and material. These data were transmitted to the client and the fiber optic contractor for use during the planned construction. The topographic and base map to the right shows the 50-foot-wide corridor centered on the proposed trench for installing the new fiber optic loop around the medical center campus. Other services RETTEW provided for this project included electromagnetics, magnetics, radio detection, metal detection, pipe and cable locating, ground penetrating radar, and closed circuit television.

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