Additional Safety Resources
Friends & Neighbors
Emergency Officials
Excavators
Farmers
Public Officials
Schools
Product Safety Chart
Product
Natural Gas Liquids
Ethane
Propane
Butane
Leak Type
Liquid/Gas
Vapors
Initially heavier than air. Can spread along the ground and collect in low or confined areas. Vapors may travel to ignition sources and flash back.
Hazards
All are extremely flammable. Vapors may cause dizziness or asphyxiation and may be toxic if inhaled at high concentrations. Contact with products may cause burns, severe injury and/or frostbite. Fire may be hazardous to environmental areas surrounding leak including, but not limited to waterways.
Product
Oil Liquids
Gasoline
Crude Oil
Leak Type
Liquid
Vapors
Heavier than air.
Hazards
All are extremely flammable. Vapors may cause dizziness or asphyxiation and may be toxic if inhaled at high concentrations. Contact with products may cause burns, severe injury and/or frostbite. Fire may be hazardous to environmental areas surrounding leak including, but not limited to waterways.
Product
Natural Gas
Leak Type
Gas
Vapors
Lighter than air.
Hazards
Extremely high concentrations may cause irritation or asphyxiation. Extremely flammable and easily ignited by heat, sparks or flames.
Product
Hydrogen Sulfide (H2S)
Leak Type
Gas
Vapors
Heavier than air and will settle, particularly in low lying areas.
Hazards
High concentrations may paralyze sense of smell and be fatal. Extremely flammable.
Additional Pipeline and Safe Digging Information
State law requires you to call your state’s One-Call Center before you plan to dig. This free service will notify all utilities in the area of your planned excavation. The toll-free, nationwide “Call Before You Dig” number is 811.
For the most current and up-to-date, state-specific One-Call laws, please visit this website: call811.com/811-In-Your-State
For your state-specific One-Call laws, see chart below:
Uniform Color Code
For temporary underground utility marking.
■ WHITE: Proposed excavation
■ PINK: Temporary survey markings
■ RED: Electric power lines, cables, conduit and lighting cables
■ YELLOW: Gas, oil, steam, petroleum or gaseous materials
■ ORANGE: Communications, alarm or signal lines, cables or conduit
■ BLUE: Potable water lines
■ PURPLE: Reclaimed water, irrigation and slurry lines
■ GREEN: Sewers and drain lines
National Pipeline Mapping System
The National Pipeline Mapping System (NPMS) includes information on hazardous liquid pipelines and natural gas transmission pipelines. To view the transmission pipelines in your area, visit www.npms.phmsa.dot.gov.
Pipeline/Systems Operated By Williams
Pipeline/Systems
Arcadia Gas Storage
Black Marlin Pipeline Company
Blue Racer Midstream LLC
Bluestem Pipeline LLC
Cadeville Gas Storage LLC
Cardinal Operating Company LLC
Discovery Gas Transmission LLC
Discovery Producer Services LLC
Gemini Carthage Pipeline LLC
Gulfstream Management & Operating Services LLC
Hill Lake Gas Storage
Louisiana Midstream Gas Services LLC
Magnolia Midstream Gas Services LLC
Mid-Continent Fractionation and Storage LLC
Monroe Gas Storage Company LLC
MountainWest Pipeline LLC
Northwest Pipeline LLC
Perryville Gas Storage LLC
Pine Needle Operating Company LLC
Pine Prairie Energy Center LLC
Rocky Mountain Midstream LLC
Rocky Mountain Midstream Pipeline LLC
SG Resources Mississippi LLC
Transcontinental Gas Pipe Line Company LLC (Transco)
Utica East Ohio Midstream LLC
Williams Field Services - Gulf Coast Company LP
Williams Field Services LLC
Williams Front Range LLC
Williams Gilcrest LLC
Williams MLP Operating LLC
Williams Oil Gathering LLC
Williams Olefins Feedstock Pipelines LLC
Williams Partners Operating LLC
Worsham-Steed Gas Storage LLC
State
LA
TX
OH & WV
KS & OK
LA
NC
LA
LA
LA & TX
AL, FL & MS
TX
LA
LA
KS
AL & MS
CO, UT & WY
CO, ID, OR, UT, WA & WY
LA
NC
LA
CO
CO
MS & AL
AL, DE, GA, LA, MD, MS, NC, NJ, NY, PA, SC, TX & VALA
OH
AL, LA & TX
AL, CO, KS, WY, OH, PA, WV, & NY
CO
CO
OH, OK, PA, TX & WV
LA & TX
LA & TX
WA
TX
Questions About the Pipeline On Your Property?
To contact a Right-Of-Way Specialist Click Here!
For additional information contact us: