Service Portfolio
Williston Basin Interstate Pipeline Company provides a broad range of natural gas services that include: transportation, storage and gathering, along with a full spectrum of energy-related administrative services. These services are offered to a variety of customers such as: utilities, natural gas production companies, energy marketing firms and large industrial consumers.

The Williston Basin spans major portions of North Dakota, South Dakota, Montana and Wyoming. Storage working gas capacity of approximately 193 billion cubic feet provides customers with enhanced daily and seasonal deliverability and greater ability to access best-cost natural gas supplies throughout the year.

Operating Statistics

2007 Throughput (Mdk) 140,762 Natural gas storage (MMcf)   Total capacity 353,349 Working capacity 193,349 Number of compressor stations 28

Interconnecting Pipelines:

Northern Border - Glen Ullin Northern Border - Manning TBI Field Services - Wind River Kinder Morgan Interstate - Bridger Colorado Interstate Gas - Elk Basin Energy West - Elk Basin MIGC - Recluse SourceGas - Billy Creek Many Islands Pipeline - Portal NorthWestern Energy - Warren

Interesting Statistics:

	Miles of natural gas transmission lines	3,364
	Miles of natural gas field and gathering lines	347

Tariff Rates
For the most current rates, please access the Williston Basin interactive web site at ebb.wbip.com and select OTHER INFORMATION and then RATES in the navigation box on the left side of the screen. Or, you may call one of the Customer Service team members listed on the Customer Service Key Contacts.