Overland Pass PipelineJanuary 2008

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About ONEOK/ONEOK Partners

• ONEOK is general partner and 45.7 percent owner of ONEOK Partners• ONEOK was founded in 1906 as a natural gas pipeline from Tulsa to Oklahoma City• Fortune 500 company

– Most admired energy company• ONEOK: One of largest natural gas distributors in U.S.• ONEOK Partners: leader in natural gas and natural gas liquids• Values: Operate in a safe and environmentally responsible manner• Legacy of community involvement

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Project Summary• Approximately a 760-mile transmission pipeline• Originates in Opal, Wyo., and ends at Conway, Kan.• Traverses 23 counties in 3 states• 90 percent of route follows

existing utility corridors• Transports natural gas liquids

(NGLs)• Approximate $433 million

capital investment• 14- and 16-inch diameter pipe

(varies)• Buried minimum of 3 feet

below ground• Startup pipe capacity range:

110,000-150,000 barrels per day

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Local Economic Impacts

WY CO KS

Miles of pipe 327 172 261

Annual tax revenue $2.2 million $2.6 million $3.6 million

Capital investment $215 million $98 million $145 million

Construction payroll $17.6 million $10.4 million $15.3 million

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Landowners by state

• Properties crossed: – Wyoming – 134 landowners; – Colorado – 251 landowners; – Kansas – 667 landowners.

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Construction Progress as of Dec. 31, 2007

Spread Workforce Work Days Welds

1 458 51 38.6

2 335 70 55.8

3 215 79 64.6

4 168 71 45.8

5 202 70 65.2

TOTAL 1378 341 270

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Looking east toward Arlington Ridge - Wyoming

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Overall Progress (Welding)

0100200300400500600700800

Oct 07 Nov 07 Dec 07 Jan 08 Feb 08 Mar 08 Apr 08 May 08

Plan Actual Projection

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Key Accomplishments as of Dec. 31, 2007

– Major River Crossings Completed• Blacks Fork - 2 Crossings• Green River• Medicine Bow• North Platte

– Other Major Crossings• I-80• I-25• Cheyenne Hub & Hwy 85

– Completed Data Recovery at WY Arch sites and received NTP for those sites– Completed 66 of 124 miles of BGWR area– Construction production on a good week is in excess of 35 miles

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Blacks Fork River Crossing

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Green River Crossing

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North Platte River Crossing

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Key Concerns

• Key Concerns– BGWR variances denied beginning Dec 1– No BGWR variances in effect after Dec 15– Unless we work something out with BLM the BGWR areas are closed to construction activity

until 5/1/2008.

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Rawlins Wood Water Pipe

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Piceance

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For More Information

• Visit www.overlandpass.com or (877) 683-7277– Latest updates about the project– Links to educational documents about the Natural Gas Industry

• ONEOK Partners contacts: – Steve Johnson, (913) 319-8604, (785) 865-6130 or sjohnson@oneok.com– Megan Washbourne, (918) 588-7572 or mwashbourne@oneok.com