Type	Name	Date
Credit agreement	First Amendment to Credit Agreement, among PAA Natural Gas Storage, L.P., as Borrower; Bank of America, N.A., as Administrative Agent and L/C Issuer; and the other Lenders party thereto	07/03/2012
Credit agreement	Credit Agreement, among PAA Natural Gas Storage, L.P., as Borrower; Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer; and the other Lenders party thereto	08/25/2011
Credit agreement	First Amendment to Credit Agreement, by and among PAA Natural Gas Storage, L.P., Bank of America, N.A., as Administrative Agent, and the Lenders party thereto	03/15/2011
Credit agreement	Credit Agreement among PAA Natural Gas Storage, L.P., Bank of America, N.A., DnB Nor Bank ASA, Wells Fargo Bank, National Association, UBS Loan Finance LLC and Citibank, N.A. and the other lenders party thereto	05/11/2010

Type	Name	Date
Equity incentive plans	PAA Natural Gas Storage, L.P. 2010 Long-Term Incentive Plan	05/11/2010

Type	Name	Date
Acquisition / asset purchase agreement	Purchase and Sale Agreement by and among SGR Holdings, L.L.C., Southern Pines Energy Investment Co., LLC and PAA Natural Gas Storage, L.P	12/30/2010