Natural Gas Services Segment

The Antrim Shale is one of the nation’s earliest shale plays, with production of over 2.5 TCF from 9,300 wells since the early 1990s.

Asset Name (click link for map)	Processing Capacity(MMcfd)	Miles of Pipe	Throughput Capacity (MMcfd)
Antrim Gathering	495	440	495

* Assuming a CO2 concentration of 10%

The Partnership owns 100 percent of Bay Area Pipeline, an approximately 55 mile residue pipeline located in eastern Michigan and operated by Consumers Energy that delivers fuel gas under a long-term contract to a Consumers Energy power plant.

The Partnership owns 75 percent of Jackson Pipeline, an approximately 25 mile pipeline located in southern Michigan and operated by Consumers Energy that connects several interstate and intrastate pipelines with Eaton Rapids Gas Storage System.

The Partnership own 44 percent of Litchfield Pipeline, an approximately 30 mile pipeline located in southern Michigan and operated by ANR Pipeline that facilitates receipts or deliveries between ANR Pipeline and Eaton Rapids Gas Storage System.

We have a 75% operating interest in the Collbran Gas Gathering joint venture, located in the Piceance Basin in western Colorado. The remaining 25% interest in the joint venture is held by Oxy, a significant producer on the system. The gas is gathered primarily under fee contracts with long term acreage dedications and is delivered to a third party for processing.

Asset Name (click link for map)	Treating Capacity (MMcfd)	Miles of Pipe	Throughput Capacity (MMcfd)
Collbran	120	40	200

The East Texas system is an integrated gas gathering and processing complex located primarily in Panola County, Texas, and is comprised of the following assets:

• a natural gas processing complex with total processing capacity of 780 million cubic feet per day (MMcf/d);
• approximately 900 miles of gas gathering pipelines with over 1,500 receipt points and over 25,000 horsepower of compression; and
• the Carthage Hub, with an aggregate delivery capacity of 1.5 billion cubic feet per day, which delivers residue gas to multiple interstate and intrastate pipelines.

Asset Name (click link for map)	Processing Capacity (MMcfd)	Miles of Pipe	Throughput Capacity (MMcfd)
East Texas	780	900	780

Our 40% ownership interest in the Discovery assets was acquired from DCP Midstream. The Discovery assets, operated by the Williams Companies (NYSE: WMB), offers a full range of wellhead to market services to both onshore and offshore natural gas producers. The assets are primarily located in the eastern Gulf of Mexico and Lafourche Parish, La., and consist of the following:

• 300 miles of deepwater Gulf of Mexico gathering and FERC-regulated transmission pipelines;
• the 600 MMcf/d LaRose gas processing plant; and
• the 32,000 barrel per day Paradis fractionator.

The remaining 60% ownership interest is held by Williams Energy Partners (NYSE:  WPZ). 

Asset Name (click link for map)	Processing Capacity (MMcfd)	Miles of Pipe	Throughput Capacity (MMcfd)
Discovery	600	300	600

The Douglas gas gathering system is located across 4,000 square miles in the heart of the Powder River Basin in Wyoming. The system gathers primarily rich casinghead gas under percentage of proceeds contracts and delivers the gas for processing to a third party under a fee agreement.

Asset Name (click link for map)	Processing Capacity (MMcfd)	Miles of Pipe	Throughput Capacity (MMcfd)
Douglas	N/A	1,300	60

The North Louisiana system is a large integrated midstream natural gas system that offers the following services:

• gathering
• compression
• treating
• processing
• transportation
• sales of natural gas, natural gas liquids (NGLs) and condensate.

The system covers 10 parishes in northern Louisiana and two counties in southern Arkansas. Through our North Louisiana system, we offer producers and customers wellhead-to-market services. The North Louisiana system has numerous market outlets for the natural gas that we gather, including several intrastate and interstate pipelines, major industrial end-users and major power plants. The system is strategically located to facilitate the transportation of natural gas from eastern Texas and northern Louisiana to pipeline connections linking to markets in the eastern and northeastern areas of the United States. 

The North Louisiana system consists of:

North Louisiana system map

The Lindsay Gathering assets were acquired from Anadarko Petroleum Corporation in May 2007. The assets gather and compress natural gas located in Grady, Garvin and McClain counties and deliver it to a plant owned by DCP Midstream.

The Southern Oklahoma system consists of:

Asset Name (click link for map)	Processing Capacity (MMcfd)	Miles of Pipe	Throughput Capacity (MMcfd)
Lindsay Gathering	n/a	225	35