Community
Know Where Underground Pipelines Are

EXCAVATION SAFETY

Pipelines Near Your Job Site

Do you always call One-Call before beginning an excavation project?

Excavation activity is the most common source of serious pipeline damage and can cause loss of life and property.

Protect your employees, equipment and company reputation by verifying the location of pipelines and underground utilities before you dig and by knowing how to identify, respond to and prevent a pipeline leak or rupture.

Remember, always call 811 before you dig!

Call 811 or your local One-Call organization at least two working days before you plan to dig and wait until the lines are marked to begin your project. One-Call is a free service.

UNIFORM COLOR CODE FOR MARKING UNDERGROUND UTILITY LINES
American Public Works Association Uniform Color Code
RED
Electric power lines, cables or conduits, and lighting cables.
YELLOW
Gas, oil, steam, petroleum or other hazardous liquid or gaseous materials.
ORANGE
Communications, cable TV, alarm or signal lines, cables, or conduits.
BLUE
Water, irrigation, and slurry lines.
GREEN
Sewers, storm sewer facilities, or other drain lines.
WHITE
Proposed excavation.
PINK
Temporary survey markings.
PURPLE
Reclaimed water, irrigation and slurry lines.
  • Planting Trees or Shrubs
  • Installing a Mailbox
  • Installing a Swimming Pool
  • Building Additions or Homes
  • Installing Drain Tile
  • Excavating
  • Boring
  • Grading
  • Installing Water or Sewer Lines, Septic Systems or Drains
  • Digging Postholes
  • Installing Telephone, Cable or TV Lines
  • Building or Repairing Driveways
  • Cutting or Deepening Ditches
Caution

Post

Digging

Before You Dig
  • Notify your local one-call center by calling 811 or making an online request (where available; Click here to learn more) 2-3 days before you plan to dig.
  • Wait the required amount of time (varies by state; please Click here for state law information).
  • One of our trained technicians will mark the location of the pipeline at no cost to you.
  • Respect the line markers.
  • Dig with Care.

Dial 811

Plan. Prepare. Call 811 Before You Dig.


call811

Call 811 or your local One-Call organization at least two or three working days before you plan to dig, and wait until utility lines are marked to begin your project. One-Call is a free service. Refer to your state-specific On-Call laws for more information.

One-Call will notify all underground utilities in the area.  If pipelines or other underground utilities are located near the excavation site, trained personnel will mark the location of pipelines and other utility lines within 48 hours or as specified by your state’s One-Call law.

Respect the flags that mark the location of the pipeline and dig with care.  If you accidentally damage or hit a Tallgrass pipeline, contact us immediately.  We will assess the damage and repair it if needed. If damage is not promptly repaired, it could result in a future leak or serious accident.

Visit your local One-Call organization’s Web site for more information regarding how to submit a one-call request online.