| Sight: | A pool of liquid on the ground near a pipeline, bubbling and/or a rainbow sheen on water, a dense white cloud or fog over a pipeline, discolored vegetation or soil, or a fire burning on or above the ground. |
| Sound: | An unusual noise coming from the pipeline, like a hissing, blowing or roaring sound. |
| Smell: | Strange and unusual gaseous or chemical odors; - Skunk: Odorized Natural Gas - Rotten Egg: Hydrogen Sulfide By Product (H2S) - Petroleum: Refined Petroleum Products including Ammonia |
Your first concern should be for your safety and the safety of those around you.