SEMCAMS

SEMCAMS

April 15, 2008 10:35 ET

SemCAMS NEB Hearing Update

CALGARY, ALBERTA--(Marketwire - April 15, 2008) - SemCAMS Redwillow ULC announced today it has received hearing update information from the National Energy Board (NEB) regarding the Redwillow Pipeline Project (Hearing Order GH-2-2008). SemCAMS will provide further information to the NEB regarding certain study requirements and the NEB will reschedule the June 3, 2008, oral hearing, to a later date.

"Major projects, such as our Redwillow Pipeline, require in-depth analysis. SemCAMS will continue to work with the NEB to provide them with the additional information in a timely manner," said Darren Marine, SemCAMS president. "We will continue our consultation process and will provide additional information as to the status of our NEB hearing as well as project and construction updates as they become available."

SemCAMS is Alberta's largest licensed sour gas processor with facilities located in Whitecourt and Fox Creek, AB. SemCAMS three sour gas (H2S) processing plants license capacity ranges from 9,000-19,000e3m3/d(300-700 MMSCFD) to 1,000-2,000t/d sulphur. SemCAMS is an integral part of the SemGroup family, headquartered in Tulsa, Oklahoma. For more information, visit www.semcams.com.

About SemGroup, L.P.

SemGroup, L.P. is a midstream company providing the energy industry means to move products from the wellhead to the wholesale marketplace. With operations in the United States, Canada, Mexico, Wales (United Kingdom), Switzerland and Vietnam, SemGroup's business segments focus on activities related to crude oil, refined petroleum products, natural gas, natural gas liquids and asphalt. Based in Tulsa, Oklahoma, SemGroup is the parent of SemGroup Energy Partners, L.P., a master limited partnership listed on the NASDAQ under the symbol SGLP. For more information, visit the Web site www.semgrouplp.com.

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