Digging Near a Pipe

The primary cause of pipeline leaks is damage from construction-related activities.

  • Contact your state One-Call Center (You can go to Call811.com for more information) before digging. Keep in mind the required wait times before digging does not include legal holidays and weekends.
  • Do not disturb the ground until all pipelines are marked.
  • Abide by all location markers and instructions provided by the MarkWest or other utility representatives.
  • MarkWest must be onsite if digging will occur within 12 ft. of a pipeline or facility.
  • When backfilling, MarkWest will monitor for adequate soil cover on top and use suitable rock-free material to avoid damage.
  • If the pipeline becomes damaged or you find it leaking at any time, immediately leave the area in an upwind direction:
    • When you reach a safe area, call 911 and the MarkWest 24-hour emergency number.            

MarkWest Operating States

Required Wait Time Before Digging

811 Phone Number

Kentucky

2 Working Days

(800) 752-6007

West Virginia

2 Days

(800) 245-4848

Michigan

72 Hours

(800) 482-7171

New Mexico

2 Working Days

(800) 321-2537

Ohio

48 Hours

(800) 362-2764

Oklahoma

48 Hours

(800) 522-6543

Texas

2 Working Days

(800) 344-8377

Pennsylvania

3 Business Days

(800) 242-1776

 

MarkWest Emergency Contact Phone Numbers

System Name

Operating State(s)

Products Transported

Emergency Phone #'s

Alps Ranger

Kentucky & West Virginia

Natural Gas Liquids

(877) 675-9378

Appleby

Texas

Natural Gas

(800) 852-9225

Asherton

Texas

Natural Gas

(800) 852-9225

Bluestone

Northern Pennsylvania

Natural Gas & Natural Gas Liquids

(866) 342-6914

Buffalo Creek

Oklahoma & Texas

Natural Gas

(800) 852-9225

Central Liberty

Pennsylvania

Natural Gas & Natural Gas Liquids

(866) 342-6914

East Texas

Texas

Natural Gas & Natural Gas Liquids

(800) 677-6360

Edwards

Texas

Natural Gas

(800) 852-9225

Hobbs

New Mexico

Natural Gas

(800) 852-9225

Javelina

Texas

Natural Gas & Natural Gas Liquids & Hydrogen

(361) 289-4777

Kingfisher

Oklahoma

Natural Gas & Crude

(800) 852-9225

Lake Whitney

Texas

Natural Gas

(800) 852-9225

MI Crude

Michigan

Crude

(866) 342-6914

Power-Tex

Texas

Natural Gas

(800) 852-9225

Rio Nogales

Texas

Natural Gas

(800) 852-9225

Southeast OK

Oklahoma

Natural Gas

(800) 852-9225

Southern Liberty

Northern WV

Natural Gas & Natural Gas Liquids

(866) 342-6914

Utica

Ohio

Natural Gas & Natural Gas Liquids

(855) 878-4859

Western OK

Oklahoma

Natural Gas

(800) 852-9225