What Does NOT Get Marked
Unless the private facility owner participates in Gopher State One Call (GSOC), private or customer-owned facilities will not be notified and may not be marked. Therefore, it is imperative that special precautions be taken by excavators as part of every excavation project. If private facilities are suspected, the excavator should:
- Physically inspect the work site prior to entering a locate request or bidding on the job
- Ask the property owner
- See what equipment or power may serve buildings
- Contact the original installer of the facilities for any records or maps of the lines
- Excavate with caution and be aware of any warning signs of underground facilities
If you are installing private facilities, consider doing the following:
- Prepare maps of any new facilities
- Bury tracer wire with the new facilities
- Use above-ground markers or signs to indicate the buried facilities
Facilities that run under or across public road right-of-way or any other public right-of-way are not “private facilities.” These facilities are “underground facilities” within the meaning of Minnesota Statutes 216D and must be registered with GSOC. Please contact Customer Support at [email protected] if you need information about registering with GSOC as a facility owner.
Suspect You Have Private Facilities?
GSOC suggests delaying any excavating until all private facilities are identified and professionally marked.
When a property owner or tenant has any type of private underground facility, they are responsible to locate those facilities or hire someone to locate them. Take a look at our list of private facility locators to find one in your area.
Remember: Landowners, homeowners, and tenants, tell your excavator about any private underground lines.
Examples of Private Utilities
Propane
Propane facilities can be found in a variety of applications in residential, agricultural, and industrial settings.
Propane lines frequently serve only the property the tank is located on. They will usually be private facilities not marked with a call to GSOC.
In residential settings, propane may be used to heat buildings, swimming pools, grills, replaces, appliances and lighting. In agricultural settings, propane may be a fuel source for multiple farm buildings, corn dryers, and other equipment.
Commercial and industrial locations also rely on propane for a fuel source. This can include a wide variety of facilities from heating to standby or off-peak backup facilities.
Visible indications of the use of propane at a location are above ground or buried storage tanks.
A buried propane tank usually has an exposed location with a fitting for refilling. Remember that a single propane tank can provide fuel for multiple buildings, mobile homes, single family homes, cabins or townhomes.
You can find more information about propane on the Minnesota Propane Association website.
Natural Gas
Private natural gas lines in a residential setting may provide fuel for a number of different devices. Among them are barbecue grills, pool heaters, yard lights or heaters in outbuildings like sheds, garages or barns.
Natural gas may be delivered to a “master meter” at multi-resident properties, such as mobile home courts, townhomes, or apartment complexes. Buried facilities carrying natural gas between the master meter and units on the property are usually private facilities. As a general rule, natural gas providers will only mark underground gas lines from the main to the meter.
Any appliance or device fueled by natural gas that is on the “other side” of the meter is almost invariably served by the private facility.
For more information about natural gas, please visit the Blue Flame Association website.
Farm Taps
Many landowners in Minnesota are connected directly to natural gas pipelines. Known as “farm taps” these connections may be considered private gas lines. All the equipment from the outlet of the meter (usually, but not always, located near the pipeline) to the house, corn dryer, milk house, or barn belongs to the landowner. Many landowners may not realize that they are entirely responsible for the operation, maintenance, repair, and locating of these underground gas line(s).
Farm taps support many farms, and as farms have expanded, adding more houses and buildings to the original farmstead, private lines attached to a single tap have increased in number. These private lines may cross a public right of way due to new roads or easements. Unfortunately, little to no documentation or maps of the original or subsequently installed facilities may exist.
As the farm tap may not be evident from a visual inspection, all landowners should specifically be asked about the possible presence of these private gas lines.
Excavators or landowners are encouraged to hire a private facility locator to mark the location of farm tap lines.
GSOC strongly recommends that specific questions regarding farm taps be directed to the gas provider or the Minnesota Office of Pipeline Safety.
Electricity
Like natural gas, electric service may be supplied to a “master meter” at multi-resident properties, such as mobile home courts, townhomes or apartment complexes. Any line that connects the “master meter” to another unit or device on that property is a private facility and therefore not marked by the facility operator.
Any property (residential or commercial) may also have buried private electric lines serving power to, among other things, yard lighting, power to other areas of the property, pool heaters, or pumps. Additionally, on residential properties or farms, private lines may connect outbuildings such as garages, sheds, or barns to a source of power. Remember that the supplier of electricity usually only marks the power line up to the meter. If there is power in a garage or if a piece of equipment or building is served by electricity, make sure to look for a private electric line. If one is present, have it professionally located before excavating.
Although the meter set is often found at the home or main building, in some areas it is located on a pole or other point of attachment. Red marks or flags leading up to a pole but not going on to other buildings are indicators that there are one or more private facilities in the area. Also, use care where a property is served by overhead lines that are buried after they enter the property. In this situation, it may be that all underground electric facilities be considered private at that location.
Water, Sewer, Wells & Septic Systems
Most cities consider any water or sewer lines that are connected to city services to be private lines when extending from the right of way into private property and therefore, any maintenance or locating is the responsibility of the landowner. Wells and septic systems exclusively serving property are also considered to be private facilities and again, the landowner is responsible for maintaining and locating the lines. A good indication as to where these lines are buried can be determined from where the lines leave the main or tank and where they enter the building.
Geothermal Ground Loops
The land or property owner should have a map of the buried ground loops or know the contractor who installed the loops. It is the responsibility of the property owner to locate the loops or hire someone to locate them.
Other Examples of Private Utilities
- Fuel sources for ag buildings or equipment
- Heating systems for pools or grills
- Electricity for outbuildings or equipment
- Farm taps
- Fiber optic lines
- Communications or phone lines
- Drain tile
- Irrigation lines
- Septic systems or waste collection lines
- Underground sprinkler systems
- Data communications cables
- Satellite dishes
- Invisible fences
- Low-voltage landscape lighting
- Geothermal ground loops
