Hydro-Excavation Project

Hydro-Excavation Project

Iowa - June 2015

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A private client contacted Seneca Waste Solutions requesting assistance to increase the speed of the utility confirmation locates and depths for an approximate five-mile natural gas line extension. The client was completing the natural gas line extension for a private energy company in Iowa. 

What is hydro-excavation?
“Hydro Excavation is the process of removing or moving soil with a combination of high-vacuum and pressurized water. An air conveyance or vacuum is then used to transfer the soil or debris to a debris tank. This allows for a non-destructive and more accurate way to excavate soil and locate underground utilities.”

Source: Hydro-Excavation: Online Hydro-Excavation
Resource, http://hydroexcavation.com/information/

To assist the client, Waste Solutions quickly mobilized several pieces of equipment; the largest number for a single hydro-excavation project to-date. In total, there were four two-man hydro/vac excavation crews; three crews from the Des Moines branch and one crew from the Davenport branch. The crews utilized:

  • Four 5,500 to 6,000 CFM/12 to 16 CY wet/dry air mover vacuum trucks.
  • One jetter truck.
  • Multiple additional support trucks and resources.

The project included trucks working in close proximity to each other. Potholing (i.e test hole) depths varied from 4’ to 21’ below grade in order to locate fiber optic lines, gas lines, sewer lines and any other utilities.  

There were three to four hydro-vacuum excavation crews on site for the completion of the project which was completed in four days. Waste Solutions responded to the client’s request on a very short notice and utilized a wide range of its resources to accomplish the project in a timely manner to meet the customer’s expectations.