Virtual Underground Products

Our Product

We provide a precise map of underground objects
using latest generation, TerraVision™ 3-D array
ground penetrating radar technology and software
(developed by Geophysical Survey Systems Inc).

Our system is capable of identifying and locating
(with accurate depth) utilities, pipes, conduits, and
other structures as small as 1" in diameter made
from all commonly used materials including metal,
plastic, cement, and vitrified clay.

Array ground penetrating radar (GPR) used alone
or in combination with other techniques qualifies as
a Quality Level B (QL-B) measurement for
subsurface utility engineering (SUE) requirements.

The radar mapped objects (the black lines
with small numbers in the sample maps below)
are located in 3-D with accurate depth.

As part of our service, we collect surface
information in the surrounding area as a
reference (curbs, maholes, fire hydrants, etc.).

Results can be presented as printed drawings
and/or in a digital format such as CAD.

The depths we reach vary from 4'-6' with a
maximum of around 10' in most regions.

We can handle most locations with a surface
somewhat smooth and free of obstacles
(roads, parking lots, cleared fields).

Ground Penetrating Radar (GPR) Utility Locating Map and Surface Survey

Sample map of an intersection with areal photograph inset. Located utility lines are shown in black with depth noted
in feet and inches along paths. Surface information is also shown (curbs, fire hydrants, storm drains, manholes,
etc.).

Surface features can be collected including one-call paint markouts (shown in colored arrowhead lines, blue for water, orange
for telecommunications).