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Important Safety Information


CLICK HERE to access our emergency response area.  You will be prompted for your username and password.

CLICK HERE for National Grid's first responder website.

First Responder On Line Training

In an effort to foster a collaborative working relationship between the fire services and the utility, St. Lawrence Gas recommended that departments within the natural gas franchise areas consider enrolling their members in the Northeast Gas Association’s Natural Gas Safety and First Responder Training available online (www.ngafirstresponder.com). In support of this initiative, St. Lawrence Gas is offering money to the departments in the amount of $10 for each fireman that completes the training and receives certification by October 15, 2017.

Emergency Event History/Tracking

On March 9, 2017 Enbridge St Lawrence Gas hosted a table top MOCK Drill with several local fire departments, local police department, as well as the local Electric Company. St Lawrence County Emergency officials participated as well. This drill simulated a third party excavator puncturing a natural gas main in close proximity to the local hospital, as well as damaging the power service directly over the gas incident. The incident was “played” from start to “make safe” and through final repair. All parties “responded” according to their procedures and reacted to stimulus that was inputted to the drill.

Participants included:

  • Massena Fire Department
  • Louisville Fire Department
  • Norfolk Fire Department
  • Brasher Fire Department
  • Helena Fire Department
  • St Lawrence County Emergency Services
  • Massena Electric Company

On May 15, 2017, representatives from St. Lawrence Gas participated in the Franklin County Fire Chiefs’ Association Meeting to exchange information about natural gas emergencies and the roles that fire departments and St. Lawrence Gas play when responding. In addition, detailed contact information was provided to the departments/companies by St. Lawrence Gas.

Departments that attended and who are eligible include:

  • Brushton Fire Department
  • Burke Volunteer Fire Department
  • Chateaugay Fire Company
  • Malone Fire Department
  • Moira Fire Department
  • North Bangor Volunteer Fire Company


St. Lawrence Gas (SLG) regularly performs mandated leakage surveys on distribution mains and services utilizing highly sensitive gas detection equipment.  By definition, a service includes all piping from the main to the outlet of the customer’s meter.  For meters installed inside a home, business or other building, SLG must gain access to all piping and appurtenances, from the point of entry (into a building) to the outlet of the meter, in order to complete such surveys. 

Access shall be granted to such piping as Public Service Law (PBS §65) provides that “9.  Buildings may be entered for the examination of meters, gas pipes, fittings, wires and works.  (a)  Any officer or agent of any gas corporation, electric corporation or municipality for that purpose duly appointed and authorized by the corporation , upon exhibiting a photo-identification badge and a written authority signed by the president or vice-president and secretary or assistant secretary of the corporation, or by the mayor or clerk of a municipal corporation or by the chairman and secretary of a municipal board in control of a public utility, may enter, at all reasonable times, any store, building, room or place supplied with gas, electricity or water by such utility corporation or municipality for the purpose of inspecting and examining the meters, pipes, fittings, wires and works for supplying or regulating the supply of gas or electricity and of ascertaining the quantity of gas or electricity supplied.  (b)  If any person, at any time, directly or indirectly, shall prevent or hinder any such officer or agent from so entering any such premises, or from making any such inspection or examination at any reasonable time, he or she shall forfeit to the corporation or municipality one hundred dollars for every such offense.”


By following the instructions below, you can help prevent a serious gas leak.

Enbridge St. Lawrence Gas has been installing gas lines using pneumatic boring tools and other trenchless technology for over twenty years.  As you may know, most municipalities have few, if any, records regarding locations of sewer lines (especially lateral sewer lines).  Enbridge St. Lawrence Gas recognizes that there may be instances where a gas line has been installed within a sewer line whose location was unknown at the time the gas line was put in.

Under normal circumstances, if a sewer line is damaged during gas line construction, a problem with the sewer line soon appears and leads to discovery of the cause of the problem.  However, when a gas line has been installed for many years without creating a sewer problem, penetration of the sewer by the gas line may remain undetected for years.

For the safety of all persons, your sewer clearing personnel should refrain from using root-cutting equipment in any sewer line before ruling out the possibility that a gas line may be involved in the blockage.  Before auguring a plugged sewer, your sewer clearing personnel must contact Enbridge St. Lawrence Gas to obtain information as to the location of gas lines in the vicinity of the sewer. Through a cooperative effort, we will likely be able to determine if the location of the sewer obstruction is in the area of any gas facilities. If it is determined that a gas line is the cause of the sewer problem, we will, of course, take immediate action to remove the gas line from the sewer and responsibly assist in completion of the necessary sewer line repairs.

Should a gas line be damaged and begin leaking while clearing a sewer line, the proper procedure to follow involves immediate evacuation of all persons in the building, notification of the local fire department, and notification of Enbridge St. Lawrence Gas.  We regularly train fire departments and other emergency personnel on how to handle such an event.



CLICK HERE for information on what to do if you discover a gas leak and odor.

Additional Videos:



We recommend installing Methane\Explosive Gas Detectors (UL2034 & UL1484) that you may find at your local hardware stores:

  • Mount high near ceiling for methane detectors as Methane is lighter than air
  • Following manufacturer recommendations on placement of detectors
  • Ensure devices equipped with battery backup in case of power failure
  • An alarm is not meant to be a substitute for proper and regular maintenance for gas related appliances


Gas control valves on furnaces, water heaters, and other gas appliances that have been under water are unfit for continued use. If they are used, they could cause a fire or an explosion. Silt and corrosion from flood water can damage internal components of control valves and prevent proper operation. Gas can leak and result in an explosion or fire. Replace ALL gas control valves that have been under water.



During winter months, check your outside gas meter and regulator for ice and snow build up.   The gas service regulator reduces the gas pressure before it is delivered into your piping system.  A frozen regulator may result in uneven gas pressures and cause an unsafe condition and/or unsatisfactory operation of your gas appliances.  Do not use a sharp object to remove the ice.  If you notice a significant build up of ice and are unable to safely remove it, please call Enbridge St. Lawrence Gas.



Some heating systems and water heaters may vent into a masonry chimney.  Regular inspection of chimneys is important to ensure proper venting.  The chimney should be lined and the tile liner should be in good shape.   There should be no debris or obstruction of the flue.  Problem chimneys can be refurbished with a chimney liner in most cases.  A qualified heating contractor can properly size the liner.   Regularly check the vent connectors from your heating system and water heater to the chimney.  There should be an upward pitch, all joints secure, and no signs of corrosion.   New power vented equipment may utilize either metal or plastic vent pipe.  Again, all joints should be secure and there should be no obstruction of the outside termination fitting. 



Some appliances are designed not to be vented and are safe when properly used.  A kitchen range is a good example of an unvented appliance.  It is designed for cooking and is safe for the task, but never under any circumstances should it be used for heating.    Approved unvented room heaters are safe when properly installed and utilized.  They are equipped with an Oxygen Depletion Sensor (ODS) which will shut the unit off if the oxygen in the room falls to an unsafe level.  An unvented heater should be properly sized for the room, taking into consideration the amount of combustion air available.  Unvented heaters are designed to be supplemental heating appliances and must not be used as a primary heat source.


Check out these videos below:




An excess flow valve (EFV) is a mechanical device installed inside a natural gas distribution service line between the street and the meter. EFVs are designed to shut-off the flow of natural gas automatically if the service line breaks. EFVs will not trip during general usage, including the normal cycling of appliances on and off. EFVs are not installed on large service lines with high flow rates, and certain other conditions may also prohibit their installation.

If an existing service line is not already equipped with an EFV, a customer may request one be installed on an eligible service, at an agreed upon price. To install an EFV, Enbridge St. Lawrence Gas (SLG) will excavate the service line at its connection to the gas main. Then, SLG will turn off the gas service, install the EFV, backfill the excavation and relight the gas appliances. Under certain situations, SLG may need to replace the entire service at no additional cost.

Since an EFV is sized to operate properly under current gas load conditions, any significant future volume consumption changes that might require a larger meter (i.e. installing and emergency generator or pool heater), may necessitate the replacement of the EFV at an additional charge.

Call 315-769-3511 with inquiries about your existing EFV or to have an EFV installed on your gas service.


Enbridge St. Lawrence Gas regularly provides safety information to our customers in our Pipeline bill insert and bill messages.  For both customers and the general public we provide public service announcements by radio and newspaper.  If you would like to receive additional gas safety Information such as a natural gas odorant card (scratch and sniff) via mail, please CLICK HERE to submit a request.