User Manual

Standard Procedures 17
High Voltage Power Lines: High voltage A/C power
Water Main: Potable fresh water supply
District Chilled Water: Dedicated institutional or municipal system
Telecommunication Lines: Telephone, cable, and fiber optic lines
District Hot Water/Steam: Dedicated institutional or municipal system
Natural Gas: Gas for heating, cooling, cooking, and hot water
Sewer Lines: Wastewater routed to sewage treatment plants
Fire Hydrant Lines: Water for fire hydrants
Specialized Vacuum Excavation Techniques
Three primary methodologies are typically used in utility construction,
locating and maintenance.
Trenching – excavation of a trench to accommodate an underground
utility. Trenches vary in depth – typically shallow for seasonal irrigation
lines, but can be several feet deep to avoid frost with water or
sewer lines.
Potholing – excavation to pinpoint the location of an underground facility.
Keyholing – specialized potholing to locate & repair underground facilities.
Typically performed on roadway surfaces to minimize pavement damage.
UNDERGROUND UTILITIES – A Crowded Picture