Important Safety Informationfor Public Officials

2015

Please do not discard. You are receiving this because we have a pipeline in your area.

Pipelines Near YouFormerly known as Access Midstream, Williams has taken over operations of and will maintain assets located in the Williams’ Access Operating Area. In the near future, you will notice a name change on pipeline marker signs in your area. You are receiving this brochure because a pipeline or above ground facility operated by Williams is in your area. It is important that you read and share this safety information with others.

Williams pipelines and facilities are part of a vast national network of underground pipelines. This system is our country’s lifeline for a variety of daily activities. From natural gas to heating oil, from water to jet fuel, pipelines reliably deliver products many of us take for granted but which are essential to our nation’s economy and standard of living. Some pipelines transport potentially hazardous and flammable substances under high pressure. Yet, according to statistics from the National Transportation Safety Board and the U.S. Department of Transportation (DOT), pipelines are one of the safest modes of transportation in the United States.

Williams maintains a Damage Prevention Program in accordance with state and federal guidelines. The purpose of the program is to prevent damage to our pipelines and facilities from excavation activities, such as digging, trenching, blasting, boring or any other digging activity. Through our efforts and shared responsibility with stakeholders, we strive to increase awareness and eliminate damages to underground pipelines. Public safety, environmental protection and service integrity are important to us.

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Safe OperationsKnowing where pipelines are located, recognizing unauthorized activity or abnormal conditions and knowing how to react in the event of a pipeline incident will help protect these integral parts of our country’s energy infrastructure.

Williams’ Access Operating Area (OA) provides four key links to the natural gas and petroleum value chain across 9 states:

• Gathering/Transportation• Compressing/Pumping• Processing• Treating

To ensure safe operations, we monitor our pipelines 24 hours a day, 365 days a year. In addition, we treat corrosion threats, conduct regular patrols and perform regular inspections of our pipelines and related rights-of-way (ROW).

WILLIAMS ACCESSOPERATING AREAS

Active Areas

Operating States

In the event of a Williams’ Access OA pipeline emergency, from a safe location immediately contact

9-1-1 and 855-427-2875

For more information about pipeline safety visit co.williams.com/safety/public-outreach. You can also contact us at PublicAwareness@Williams.com

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Product CharacteristicsThe following table outlines the characteristics of some common products transported via pipeline.

Important Resource The Emergency Response Guide (ERG) can be viewed or purchased at hazmat.dot.gov.Please email PublicAwareness@Williams.com for specific commodities in your area.

Use Your SensesAlthough pipeline leaks are uncommon, it is important to be able to recognize the warning signs using sight, smell and sound. Note: all of these signs may not be evident at the same time.

• Discolored or dead vegetation• Flames coming from the ground• A cloud of vapor, fog or mist• A pool of liquid on the ground or bubbling in a wet, flooded area• Dirt blowing in the air• A rainbow or sheen on the water

• An unusual hissing or roaring noise coming from a pipeline

• An unusual odor or scent of gas, petroleum liquids or a slight hydrocarbon smell – natural gas is primarily odorless in gathering and transmission pipelines

• Natural gas transported through pipelines like those operated by Williams are typically unodorized and may carry a faint petroleum scent or no odor at all

• Hydrogen sulfide will carry a pungent rotten egg odor. If a Williams pipeline near you transports natural gas containing hydrogen sulfide you will receive an additional brochure specifically for hydrogen sulfide

PRODUCT LEAK TYPE VAPORS HEALTH HAZARDS FIRE HAZARDS

Natural Gas Gas Lighter than air

Extremely high concentrations may cause irritation or asphyxiation

Extremely flammable and easily ignited by heat, sparks

or flames

Highly Volatile Liquids (HVL) = Natural Gas Condensate

Liquid/Gas

Heavier than air

Respiratory tract irritant; may cause central nervous system effects,

drowsiness, asphyxiation

Extremely flammable liquid or vapor; vapors are heavier than air and may accumulate in low areas and travel considerable distance to an ignition source

Hydrogen Sulfide (H2S) Gas Heavier

than airHigh concentrations may paralyze

sense of smell and be fatal

Flammable; vapors are heavier than air and will settle, particularly in low-lying areas

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Williams Emergency ActionsWilliams strives to build partnerships with the emergency response community to share resources and provide education for a safe response to a pipeline emergency. In the unlikely event of a pipeline emergency, Williams will work with the response community to control the situation as quickly as possible. Our trained personnel will:

• Arrive at the site of the emergency and stop or reduce product flow to the area

• Notify and work with the appropriate emergency response officials

• Repair the facility and restore service as soon as possible

• Fully investigate the cause of the incident

Call Before You Dig• Call 811 before beginning any excavation

project no matter how big or small the project is.

• By law, people performing excavation or construction activities are required to call 811 48 to 72 hours before beginning work (varies by state).

• If Williams operates pipeline in the vicinity, we will be notified and will locate and mark our pipeline with temporary flags or spray paint before you dig.

• Damage from excavation-related activities is the leading cause of pipeline incidents, so always call 811 before you dig. This includes anything from small home projects to large scale construction projects.

If a leak does occur:• Turn off and abandon any motorized equipment, if applicable.• Evacuate the area quickly and cautiously by walking into the

wind, away from possibly hazardous fumes.• Warn others to clear the area.• Call 9-1-1, the pipeline operator and 811 once you have reached a safe location. • DO NOT touch, inhale or make contact with leaking liquids or gas.• DO NOT use open flames or anything that could ignite a spark (cell phones, flashlights,

motor vehicles, tools, etc.).• DO NOT attempt to operate pipeline valves. Wait for an authorized representative from the

pipeline operator.

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Uniform Color CodeProposed Excavation Communication

Temporary Survey Potable Water

For Temporary UndergroundUtility Marking

Electric Reclaimed Water or Irrigation

Gas, Oil, Steam or Petroleum Sewer and Drain Lines

1-855-427-2875CALL ACCESS MIDSTREAM

CALL ACCESS

MIDSTREAMBEFORE

EXCAVATINGOR IN

AN EMERGENCYCALL

1-855-427-2875

WARNING

Permanent Marker Signs Temporary Flag

Residential Encroachments:• Ponds• Swimming pools• Fences• Sheds• Decks• Trees

Commercial Encroachments:• Utility lines (overhead or buried)• Other pipelines• Highways or public roadways• Parking lots• Sidewalks• Buildings or structures

White Lining Anyone digging is encouraged to pre-mark with white paint, stakes or flags to show the specific area where excavation will take place. This process, known as white lining, ensures accuracy and eliminates unnecessary locations.

Pipeline MarkersSince pipelines are generally buried underground, pipeline markers and warning signs are used aboveground to indicate their general location. These markers are placed wherever needed to indicate the presence of a pipeline, including at river, railroad and street crossings and in other heavily congested areas. These markers do not, however, show the exact location, depth, pressure or number of pipelines. Pipelines also do not always follow a straight path.

Be familiar with these permanent markers that indicate the:• Material transported in the pipeline

• Name of the pipeline operator

• Telephone number where the operator can be reached 24/7 in an emergency

Pipeline EncroachmentsA right-of-way (ROW) is a defined clearing above and on either side of a pipeline. It is typically identified by pipeline marker signs and allows operators access in an emergency and to conduct regular inspections. An encroachment is a structure or object that overlaps the ROW that might impede access or pose a significant risk to the pipeline and should not be installed without permission from the pipeline company. Examples include:

Train DerailmentWhen a train derailment incident occurs there is potential for damage to above ground valve sites and buried pipelines. If a derailment incident occurs, please contact the operator and 811 immediately.

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Be a good neighbor!Be aware of people acting suspiciously near pipelines or pipeline facilities. Report unusual or suspicious activity, including: • People or vehicles loitering in the vicinity of

pipelines or facilities• People taking photos, video or showing other

unusual interest in pipelines or facilities• A strong odor or fluid leaking from a vehicle

located near a pipeline or facility

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 npms.phmsa.dot.gov. Please note: this site does not currently map gas gathering of distribution pipelines.

Protecting our Communities You have an impact on community growth, land use planning and development activities near natural gas pipelines to improve the safety of the affected communities. The Pipelines and Informed Planning Alliance (PIPA) assists communities in becoming risk-informed about transmission pipelines and making better land use planning and development decisions related to pipelines. PIPA has developed recommended practices for protecting communities, protecting transmission pipelines and communicating among stakeholders. See: http://primis.phmsa.dot.gov/comm/pipa/landuseplanning.htmConsiderations for proper community and land development near pipelines:

• Establish consultation zones to require developers and pipeline operators to communicate• Restrict certain types of land use and development• Ensure adequate access for pipeline maintenance and emergency response or evacuation

Integrity Management An Integrity Management Plan (IMP) provides a process of assessing and mitigating risks along transmission pipelines. Williams has developed and implemented an IMP that provides a process for monitoring, managing and mitigating risks along transmission pipelines. Contact us if you would like a copy.High Consequence AreasHigh Consequence Areas (HCAs) are part of the Williams Integrity Management Program and apply to transmission piping only. Enhanced protection for highly populated areas, an outside area or open structure, or a facility occupied by persons who are confined, are of impaired mobility, or would be difficult to evacuate. Examples of HCAs include beaches, playgrounds, recreational facilities, camping grounds, outdoor theaters, stadiums, recreational areas near a body of water, religious facilities, office buildings, community centers, general stores, 4-H facilities, roller-skating rinks, hospitals, prisons, schools, day-care facilities, retirement facilities or assisted-living facilities.Unusually Sensitive Areas Unusually Sensitive Areas (USAs) are similar to High Consequence Areas but instead of natural gas transmission pipeline, a USA is for liquid pipelines. These sites include commercially navigable waterways, high population or other populated areas, and primary or alternative drinking water sources, ecological resources, wetlands or areas inhabited by threatened and endangered species.

• For questions about, or to report, an encroachment, email PublicAwareness@Williams.com.

• For state-specific one-call information, visit www.Call811.com. • For more information about pipeline safety, visit www.Williams.com/Safety. • You can also contact us at PublicAwareness@Williams.com or 855-255-2406. • For copies of our Pipeline Safety information for Emergency Responders and Affected Public

please contact us or visit our website.7

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