Fitch Lowers SemGroup and Units' IDR to 'D'; Debt Ratings Remain on Watch Negative

CHICAGO--(Business Wire)--
Fitch Ratings has lowered the Issuer Default Ratings (IDR) of
SemGroup, L.P. (SemGroup), SemCrude L.P, and SemCAMS Midstream Co. to
'D' following the bankruptcy petition by SemGroup and most of units on
July 22, 2008. These ratings are removed from Rating Watch where they
were placed on July 17, 2008. The bank facility and securities ratings
of SemGroup and units remain on Rating Watch Negative pending a review
of the bankruptcy court petition. Ratings affected by this action are
as follows:

SemGroup, L.P.

SemCrude, L.P.

SemCAMS Midstream Co.

--IDR lowered to 'D' from 'B-'.

Ratings remaining on Rating Watch Negative

SemGroup, L.P.

--Senior unsecured 'B/RR3'.

SemCrude L.P.

--Senior secured working capital facility 'BB-/RR1';

--Senior secured revolving credit facility 'B+/RR1';

--Senior secured term loan B 'B+/RR1'.

SemCAMS Midstream Co. (SemCAMS)

--Senior secured working capital facility 'BB-/RR1';

--Senior secured revolving credit facility 'B+/RR1';

--Senior secured term loan B 'B+/RR1'.

SemGroup is a privately held midstream energy partnership focused
primarily on providing gathering, transportation, processing, and
marketing services for crude oil and refined products in the U.S.
Midcontinent region and Canada. SemGroup Energy Partners, L.P., a
publicly traded Master Limited Partnership affiliate, was not included
in the bankruptcy petition and is not rated by Fitch.

Fitch's rating definitions and the terms of use of such ratings
are available on the agency's public site, www.fitchratings.com.
Published ratings, criteria and methodologies are available from this
site, at all times. Fitch's code of conduct, confidentiality,
conflicts of interest, affiliate firewall, compliance and other
relevant policies and procedures are also available from the 'Code of
Conduct' section of this site.

Fitch Ratings
Joseph Sorce, +1-312-368-3161 (Chicago)
Glen Grabelsky, +1-212-908-0577 (New York)
Media Relations:
Brian Bertsch, +1-212-908-0549 (New York)

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