HOUSTON, March 29, 2011 /PRNewswire/ -- Plains All American Pipeline, L.P. (NYSE: PAA) and PAA Natural Gas Storage (NYSE: PNG) today announced they will release first quarter 2011 earnings after market close on Wednesday, May 4, 2011.

HOUSTON, May 4 /PRNewswire-FirstCall/ -- Plains All American Pipeline, L.P.

Plains All American Pipeline, L.P. (NYSE:PAA) today reiterated statements made in a press release issued July 17, 2008, that it does not expect to have any material credit exposure to SemGroup, L.P. and its affiliates. SemGroup, L.P.