We locate all types of conductive buried lines via electromagnetic induction equipment. This includes telephone, coaxial cable, fiber optic cables (when they are jacketed or accompanied by a tracer wire), power, and gas lines. We can also locate most water, sewer, and storm drain lines using various techniques.


Upon request, we can survey the locations and attributes of each of the utilities that we locate and produce quality maps. We can provide maps or other digital survey location data in various formats compatible with AutoCAD, ArcGIS, Google Maps, etc. We have the ability to locate using a variety of GPS and conventional survey methods and have a licensed land surveyor who supervises all mapping services.


Finding water leaks is more than half the battle in repairing them, and it takes years of experience to find leaks accurately. We can save you time and money by having the source of the leak located before you start digging. We have experienced technicians who have a proven track record of finding leaks and saving money for our clients.


Our pipe camera inspection service can not only find breaks, incursions, and defects, we can produce video with distance markings, and locate and mark the line above ground complete with indication of damaged sections or pipe location.


Ground Penetrating Radar, or GPR for short, allows us to find utilities that until recently were determined to be “un-locatable”. PVC pipes, clay tile, underground tanks, and many other structures can now be located with great accuracy depending on certain site conditions. We utilize the industry standard, GSSI Model 623 UtilityScanTM, which helps us do utility detection, UST locating, road inspection, and much more!


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It was 1984 and Richard “Dick” Mulvaney was working for Vermont Gas in downtown Burlington, Vt. While jack hammering in the street, he hit two power lines. One was 13.8kv (13,800 volts) and the other 7.2kv (7,200 volts). Although other lines in the vicinity had been marked, these two were not. Dick spent the next two months in the hospital and the next two years recovering. The doctors used the word “miracle” freely, for with the amount of damage his body sustained, he should not have survived. Yet two years after the accident, in 1986, Dick was back to work at Vermont Gas this time learning to locate their facilities. In 1992 Dick started his own locating company, Vermont Underground Locators, and has been at it ever since.

“A missed mark is not an option.” ~ Richard Mulvaney

Dick recently sold the assets of the firm and is excited to be working with a new ownership team which is comprised of a professional project manager, two professional civil engineers, and a licensed land surveyor. Dick will continue to serve as the Senior Utility Locator and Trainer. VTUL recently hired Kyle Guyette as a Utility Locating Technician. Kyle is excited to be learning the ropes from Mr. Mulvaney and is proving to be a quick study.


General Locate$150hr
Camera Inspection$200hr
Mobilization Fee$75hr
Survey & MappingFree Estimate upon request

Time is billed in 1/2 hr increments after a 1 hr minimum.

Mobilization Fee

Travel time is billed to and from Williston, Vt. plus $0.54 per mile.

Cancellation Fee

We require 24 hours notice for cancellation, otherwise a $150 fee will be assessed.


Most locates come under the General Locate category and don’t involve the use of GPR, Cameras, or Mapping. Marking of municipal sewer and storm drain will usually require GPR, however, we find that for most projects these aren’t of any concern. For residential and small commercial, we usually assume 20 minutes per utility unless the site is unusually large or congested with utilities. Give us a call and we can help you with an estimate for your site.

Helpful Hints

These are some things that can help your locate go quickly and smoothly:

  1. Prepare a clear description of the scope of work and what does/doesn’t need to be marked.
  2. Gather any prints or documentation that may give us an idea of where to look for things such as underground storage tanks.
  3. If you will not be on site at the time of the mark-out, premark the area clearly in white (Hint—it should already be pre-marked for Dig Safe.)


Q. What is Dig Safe?

Dig Safe is a non-profit organization. Dig Safe is a free service, funded solely by its utility members to promote public safety and avoid costly underground utility damage. In MA, ME, RI, VT, and NH it’s the law that before a person or contractor digs they must notify premark the area and notify Dig Safe at least 48 hours excluding Saturdays, Sundays and legal holidays, but not more than30 days before commencing excavation activities.

Dig Safe itself is primarily a call center and their employees do not mark the utilities themselves. When you call Dig Safe or complete an on-line ticket, their operators record all of the information you give them about your dig site. Dig Safe then dispatches all of the subscribing member utilities that might be near your dig area to locate their respective utility and in some cases they hire other companies to do the work. Not all utilities are required to participate in the Dig Safe Program.

Q. How far down can you "see"?

Unfortunately, we cannot actually see underground and better than you can. However we have specialized equipment that we use such as ground penetrating radar (GPR) and electromagnetic locators that we use to determine the approximate depth and location of utilities. In some cases GPR can identify utilities below ground up to 15 feet below the surface. When we’re locating a conductive line (TV, phone, power, gas, etc.), we have found lines that are more than 30′ deep. We also have up to 400’ of camera line we can use to probe inside a pipe and determine its condition and location.

Q. When you talk about locating “conductive” lines, does that mean that you’re using a metal detector?

No. We use various electromagnetic transmitters to put a signal on each line then follow it out with a receiver tuned to the same frequency. This means we cannot always get a good signal on non-conductive pipe materials such as PVC or concrete. However, we have specialized equipment and over 25 years of experience we use to “find” those hard to find utilities.

Q. Who is required to participate as a subscribing member utility?

Who may participate voluntarily, and what they must mark, varies from state to state. For instance, power companies are ALL required to participate in all states. However, what they mark varies.

For example, in Vermont, most power companies only mark from the street to the meter. This means that if your meter is on a pole down by the road, the line from that pole up to your house will not be marked. But the telephone may be marked all the way to the house.

In New York, the secondary power, power after the transformer but before the meter, may not get marked once it crosses on to private property.

Usually, municipal sewer and water are not required to participate; they usually do on a voluntary basis though. In some places, utilities will provide positive response, eg; marking NO FPTel or NO VTGas to let you know that they’ve been there. Other places and utilities do not have this requirement.

In general, Dig Safe is an invaluable program and protects many lives and infrastructure. It is a great starting point and the LAW – SO ALWAYS CALL 811 or visit www.digsafe.com BEFORE YOU DIG.

At Vermont Underground Locators we go above and beyond the limitations of Dig Safe and can further assist you with locating public AND private utilities within your work area to the best of our ability and within the limitations of our equipment. Our experienced locating technicians can also survey and map your utilities for future reference. We carefully document our work and can be an invaluable part of your construction or design project. In addition we can assist with finding power faults, leaks, or doing camera inspection services on various buried utilities.




You can find us at the following address:
494 Blair Park Road, Williston, VT 05495


Use the form, or email us at the following address:


Our office is open Monday – Friday, 9:00am – 5:00pm:
802-863-7113 office / 802-343-0486 cell


Email Address