Recognizing and Unplanned Release

Use caution in the event of a suspected pipeline leak or in the event of any of the following suspicious conditions:


  • Some gaseous and most liquid leaks or releases may be visually detectable. A dense white cloud or fog originating near a pipeline marker, vent or above-ground equipment may be the result of a leak. Extra caution should be used to avoid ignition as  such fumes and mists are likely flammable.
  • Dust blowing from a hole in the ground
  • Dead or discolored vegetation in an otherwise green area
  • Continuous bubbling in wet or flooded areas
  • Flames, if a release has ignited
  • Large ice ball formation on above-ground piping


  • You cannot always see that there is a pipeline leak. Dow transports a variety of products, some of which may not be detectable by sight should a leak occur. However, hearing a hissing or blowing sound may identify a release depending on the size of the release


  • Products escaping from a pipeline may sometimes be detected by a gas or "smelly oil" odor

The vast majority of products Dow transports are hydrocarbon based products which means that they will ignite and burn if released and exposed to an ignition source.

It is always best to call Dow Product Control if you have any reason to suspect a leak from one of Dow’s pipelines. Dow’s 24 hour emergency numbers are as follows:

Seadrift Pipeline Corporation
UCAR Pipeline Incorporated
UCAR Louisiana Pipeline Company
1-888-278-3413 or 1-888-278-3414

Dow Pipeline Company
Dow Intrastate Gas Company
Cayuse Pipeline, Inc.
Dow Hydrocarbons & Resources LLC.