Alerian Capital Management Announces the Addition of Eagle Rock Energy Partners, L.P. to the Alerian MLP Index.

NEW YORK -- Alerian Capital Management LLC announced that at the close of business today, Eagle Rock Energy Partners, L.P. (NASDAQ: EROC) will be added to the Alerian MLP Index (NYSE: AMZ).

Eagle Rock Energy Partners, L.P. has a market capitalization of approximately $750 million and gathers, conditions, treats, processes and transports midstream natural gas for a customer base that spans the natural gas and natural gas liquids commodity industries. Included in Eagle Rock's diversified client base are natural gas producers, other midstream processors and gatherers, natural gas liquids companies, fractionators, and natural gas consumers. The firm's core competencies include asset management, construction, operations, engineering, measurement, gas control and scheduling, marketing, trading, and mergers and acquisitions.

Following its merger with Plains All American Pipeline, L.P. (NYSE: PAA) today after the close of business, Pacific Energy Partners, L.P. (NYSE: PPX) will be removed from the Alerian MLP Index and replaced by Eagle Rock Energy Partners, L.P. (NASDAQ: EROC).

In accordance with the existing index methodology, the index's 50 constituents will be rebalanced on a float-adjusted market capitalization-weighted basis.

Constituent additions to and deletions from the Alerian MLP Index will be announced in advance and do not reflect an opinion by Alerian Capital Management LLC on the investment merits of the respective securities.

About the Alerian MLP Index

The Alerian MLP Index is a composite of the 50 most prominent energy master limited partnerships and is calculated by Standard & Poor's using a float-adjusted market capitalization methodology, providing an unbiased, comprehensive benchmark for the performance of this emerging asset class. The index is disseminated real-time on a price return basis (NYSE: AMZ) and the corresponding total return index is disseminated daily through ticker AMZX. Relevant constituent data points such as market capitalization, daily dividends, and dividend yield are disseminated daily.

About Alerian Capital Management LLC

Alerian is a registered investment advisor that manages portfolios exclusively focused on midstream energy Master Limited Partnerships. The company focuses on fundamental analysis in this emerging asset class, combining its bottoms-up private equity philosophy with risk management programs designed to preserve capital and mitigate portfolio volatility. Investing in both the private and public equity markets, the company concentrates on maximizing absolute total returns on a risk-adjusted basis. For more information, visit www.alerian.com.

About Eagle Rock Energy Partners, L.P.

Eagle Rock Energy Partners, L.P. is a growth-oriented midstream energy partnership engaged in the business of gathering, compressing, treating, processing, transporting and selling natural gas and fractionating and transporting natural gas liquids in Texas and Louisiana. Its corporate office is located in Houston, Texas.

About the New York Stock Exchange 

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About Standard & Poor's

Standard & Poor's, a division of The McGraw-Hill Companies (NYSE:MHP), is the world's foremost provider of independent credit ratings, indices, risk evaluation, investment research and data. With approximately 6,300 employees located in 21 countries and markets, Standard & Poor's is an essential part of the world's financial infrastructure and has played a leading role for more than 140 years in providing investors with the independent benchmarks they need to feel more confident about their investment and financial decisions. For more information, visit http://www.standardandpoors.com.