pinpoint the vertical utility locations — thus providing designers with a full subsurface picture of the construction site . Specifically , Ayres SUE professionals use the Vacmasters 4000 system to perform the test-holing process . The system allows for excavation around subsurface utilities without harming them . Air excavation involves the use of high-pressure , high-volume air to break up and remove the soils around underground utilities , while simultaneously vacuuming and storing the soil so it can later be easily replaced . When site soil conditions require it , the Vacmasters 4000 also enables SUE providers to use water excavation , which entails bringing water on site and properly disposing of the spoils that result from the soil removal process , as well as bringing in new replacement material once test-holing is complete .
“ The overall goal is to identify conflicts with underground utilities during the design of a project ,” said Dale Mathison , senior project manager in Ayres ’ Fort Collins office who oversees projects involving SUE services . “ On every project , during the design process the designer is trying to determine what ’ s below ground , how impacting existing subsurface infrastructure can be avoided , and what infrastructure and / or design features may have to be relocated as part of the project .”
Upping the game : New law and updated standards affect SUE practice Recently , updated national standards from the ASCE as well as a relatively new law in Colorado have given increased visibility to the importance of SUE in the design and construction process .
Updated ASCE standards In July 2022 , the ASCE released new standards that provide SUE practitioners with detailed , updated guidance on the
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