Duncan Energy Partners L.P. Archive Financial Information Annual Reports Quarterly & Other Reports Duncan Energy Partners L.P. Archive GulfTerra Energy Partners L.P. Archive Enterprise GP Holdings L.P. Archive Oiltanking Partners, L.P. Archive Documents Add Files 2010 10-K 1.4 MB Add Files 2009 10-K 1.5 MB Add Files 2008 10-K 1.3 MB Add Files 2007 10-K 1 MB Add Files 2006 10-K 911.4 KB