Document:

<PAGE>

                 FIRST AMENDMENT AND CONSENT TO CREDIT AGREEMENT
                 -----------------------------------------------

                  FIRST AMENDMENT AND CONSENT TO CREDIT AGREEMENT (this "First
Amendment"), dated as of May 13, 2003, among GRAHAM PACKAGING HOLDINGS COMPANY,
a Pennsylvania limited partnership ("Holdings"), GRAHAM PACKAGING COMPANY, L.P.,
a Delaware limited partnership (the "Borrower"), GPC CAPITAL CORP. I, a Delaware
corporation (the "Co-Borrower"), the various Lenders party to the Credit
Agreement referred to below, LASALLE BANK NATIONAL ASSOCIATION, as documentation
agent (in such capacity, the "Documentation Agent"), DEUTSCHE BANK TRUST COMPANY
AMERICAS, as administrative agent (in such capacity, the "Administrative Agent")
and SALOMON SMITH BARNEY INC., as syndication agent (in such capacity, the
"Syndication Agent" and, together with the Documentation Agent and the
Administrative Agent, the "Agents"). All capitalized terms used herein and not
otherwise defined shall have the respective meanings provided such terms in the
Credit Agreement referred to below.

                              W I T N E S S E T H:
                              - - - - - - - - - -

                  WHEREAS, Holdings, the Borrower, the Co-Borrower, the Lenders
and the Agents are parties to a Credit Agreement, dated as of February 14, 2003
(as amended, modified or supplemented to, but not including, the date hereof,
the "Credit Agreement");

                  WHEREAS, the Borrower wishes to refinance in full the Tranche
II Term Loans pursuant to an exchange of such Tranche II Term Loans for senior
subordinated notes in an aggregate principal amount of $100,000,000 with
substantially identical terms as the Borrower's existing Senior Subordinated
Notes (the "New Senior Subordinated Notes") and the subsequent sale of such New
Senior Subordinated Notes pursuant to an offering under Rule 144A of the
Securities Act of 1933, as amended, in each case, in accordance with the terms
of the definition of "Tranche II Term Loan Refinancing" contained in the Credit
Agreement, except that the New Senior Subordinated Notes may have a final
maturity that is on or after January 15, 2008 instead of a final maturity that
is five years from the date of issuance thereof (the "New Senior Subordinated
Notes Issuance"); and

                  WHEREAS, the Lenders wish to grant certain consents to the
Credit Agreement and the parties hereto wish to amend the Credit Agreement as
herein provided;

                  NOW, THEREFORE, it is agreed:

I.       Amendments and Consents to Credit Agreement.
         -------------------------------------------

                  1. The Lenders hereby consent to the New Senior Subordinated
Notes Issuance and agree that the New Senior Subordinated Notes shall (i)
constitute "Permitted Refinancing Indebtedness" under, and as defined in, the
Credit Agreement and (ii) be deemed

<PAGE>

to be the "New Senior Notes" under, and as defined in, the definition of
"Tranche II Term Loan Refinancing" contained in the Credit Agreement.

                  2. Section 1.01 of the Credit Agreement is hereby amended by
deleting the text "at least five years from the date of issuance thereof"
appearing in clause (x) of the definition of "Tranche II Term Loan Refinancing"
and inserting the text "on or after January 15, 2008" in lieu thereof.

II.      Miscellaneous.
         -------------

                  1. In order to induce the Lenders to enter into this
Amendment, each of Holdings and the Borrower hereby represents and warrants to
each of the Lenders that (i) all representations and warranties contained in
Article III of the Credit Agreement and in the other Loan Documents are true and
correct in all material respects on and as of the First Amendment Effective Date
and after giving effect to this First Amendment (unless such representations and
warranties relate to a specific earlier date, in which case such representations
and warranties shall be true and correct as of such earlier date) and (ii) there
exists no Default or Event of Default on the First Amendment Effective Date
after giving effect to this First Amendment. Furthermore, for avoidance of
doubt, the Borrower hereby acknowledges and confirms its due execution and
delivery of all Loan Documents (each Loan Document as amended, modified or
supplemented through and including the date hereof), including all instruments,
financing statements, agreements, certificates and documents executed and
delivered in connection therewith, and hereby ratifies all actions heretofore
taken in connection therewith.

                  2. This First Amendment is limited as specified and shall not
constitute a modification, acceptance or waiver of any other provision of the
Credit Agreement or any other Loan Document.

                  3. This First Amendment may be executed in any number of
counterparts and by the different parties hereto on separate counterparts, each
of which counterparts when executed and delivered shall be an original, but all
of which shall together constitute one and the same instrument. A complete set
of counterparts executed by all the parties hereto shall be lodged with the
Borrower and the Administrative Agent.

                  4. THIS FIRST AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE
PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAW
OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS.

                  5. This First Amendment shall become effective on the date
(the "First Amendment Effective Date") when each Loan Party (including, without
limitation, Holdings, the Borrower, the Co-Borrower and each Subsidiary
Guarantor) and the Required Lenders shall have signed a counterpart hereof
(whether the same or different counterparts) and shall have delivered (including
by usage of facsimile transmission) same to the Administrative Agent at its
office located at 31 West 52nd Street, New York, New York.

                                      -2-
<PAGE>

                  6. From and after the First Amendment Effective Date, all
references in the Credit Agreement and each of the Loan Documents to the Credit
Agreement shall be deemed to be references to the Credit Agreement as amended
hereby.

                                      * * *

                                      -3-
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be duly executed by their respective authorized officers as of the
day and year first above written.

              GRAHAM PACKAGING HOLDINGS
              COMPANY

              By: BCP/Graham Holdings L.L.C., its
                  general partner

              By:    /s/ John E. Hamilton
                  ----------------------------------------------------
                  Name:  John E. Hamilton
                  Title: Chief Financial Officer, Asst. Treasurer
                         and Asst. Secretary

              GRAHAM PACKAGING COMPANY, L.P.

              By: GPC Opco GP LLC, its general partner

              By: /s/ John E. Hamilton
                  ----------------------------------------------------
                  Name:  John E. Hamilton
                  Title: Chief Financial Officer, Treasurer
                         and Secretary

              GPC CAPITAL CORP. I

              By: /s/ John E. Hamilton
                 ----------------------------------------------------
                  Name:  John E. Hamilton
                  Title: Vice President, Secretary and Asst.
                         Treasurer

<PAGE>

                DEUTSCHE BANK TRUST COMPANY AMERICAS,
                    Individually and as Administrative Agent,

                By      /s/ Mary Kay Coyle
                     ----------------------------------------------------
                     Name: Mary Kay Coyle
                     Title: Managing Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                CITICORP NORTH AMERICA, INC

                By:    /s/ Suzanne Crymes
                    ----------------------------------------------------
                    Name:  Suzanne Crymes
                    Title:  Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                LASALLE BANK NATIONAL ASSOCIATION

                By:    /s/ Robert M. Wally
                    ----------------------------------------------------
                    Name:  Robert M. Wally
                    Title:  Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION: MANUFACTURERS AND TRUST COMPANY, successor
                in interest to Allfirst Bank

                By:    /s/ Kellie M. Matthews
                    ----------------------------------------------------
                    Name:  Kellie M. Matthews
                    Title: Administrative Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH CNC LLC

                By:    s/s Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title:  Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH CRESCENT LLC

                By:    s/s Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title:  Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH CRESCENT-2 LLC

                By:    s/s Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title:  Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH CRESCENT-3 LLC

                By:    /s/ Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title:  Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH RIVERSIDE LLC

                By:    /s/ Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title:  Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH SOLEIL LLC

                By:    /s/ Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title: Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH SOLEIL-2 LLC

                By:    /s/ Dorian Herrera
                   ----------------------------------------------------
                   Name:  Dorian Herrera
                   Title: Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH WATERSIDE LLC

                By:    /s/ Dorian Herrera
                   ----------------------------------------------------
                   Name:  Dorian Herrera
                   Title: Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                LONG LANE MASTER TRUST IV
                By:   Fleet National Bank as Trust
                      Administrator

                By:      /s/ Kevin Kearns
                     ----------------------------------------------------
                     Name:  Kevin Kearns
                     Title:  Managing Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                ALLSTATE LIFE INSURANCE COMPANY

                By:      /s/ David Walsh
                    ----------------------------------------------------
                    Name:  David Walsh
                    Title:  Authorized Signatory

                By:      /s/ Chris Goergen
                    ----------------------------------------------------
                    Name:  Chris Goergen
                    Title:  Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                KZH HIGHLAND-2 LLC

                By:      /s/ Dorian Herrera
                    ----------------------------------------------------
                    Name:  Dorian Herrera
                    Title:  Authorized Agent

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                TCW SELECT LOAN FUND, LIMITED
                By:    TCW Advisors, Inc. as its
                       Collateral Manager

                By:      /s/ G. Steven Kalin
                    ----------------------------------------------------
                    Name:  G. Steven Kalin
                    Title:  Senior Vice President

                By:      /s/ Jonathan R. Insull
                    ----------------------------------------------------
                    Name:  Jonathan R. Insull
                    Title:  Managing Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                C-SQUARED CDO LTD.
                By:    TCW Advisors, Inc., as its
                       Portfolio Manager

                By:      /s/ G. Steven Kalin
                     ------------------------------
                     Name:  G. Steven Kalin
                     Title:  Senior Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SEQUILS IV, LTD.
                By:    TCW Advisors, Inc. as its
                       Collateral Manager

                By:      /s/ G. Steven Kalin
                     ------------------------------
                     Name:  G. Steven Kalin
                     Title: Senior Vice President

                By:     s/s Jonathan R. Insull
                     ------------------------------
                     Name:  Jonathan R. Insull
                     Title: Managing Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SEQUILS I, LTD.
                By:    TCW Advisors, Inc. as its
                       Collateral Manager

                By:      /s/ G. Steven Kalin
                    ------------------------------
                    Name:  G. Steven Kalin
                    Title: Senior Vice President

                By:     s/s Jonathan R. Insull
                    ------------------------------
                    Name:  Jonathan R. Insull
                    Title: Managing Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SANKATY ADVISORS, LLC as Collateral Manager for Castle Hill I -
                INGOTS, LTD., as Term Lender

                By:      /s/ Diane J. Exter
                     ------------------------------
                     Name:  Diane J. Exter
                     Title: Managing Director
                            Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SANKATY ADVISORS, LLC as Collateral Manager for Castle Hill II -
                INGOTS, LTD., as Term Lender

                By:      /s/ Diane J. Exter
                     ------------------------------
                     Name:  Diane J. Exter
                     Title: Managing Director
                            Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SANKATY ADVISORS, LLC as Collateral Manager for RACE POINT CLO,
                LIMITED, as Term Lender

                By:      /s/ Diane J. Exter
                   ------------------------------
                   Name:  Diane J. Exter
                   Title: Managing Director
                          Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SANKATY ADVISORS, LLC as Collateral Manager for RACE POINT II
                CLO, LIMITED, as Term Lender

                By:      /s/ Diane J. Exter
                    ------------------------------
                    Name:  Diane J. Exter
                    Title: Managing Director
                           Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                HARBOUR TOWN FUNDING LLC

                By:      /s/ Ann E. Morris
                     ------------------------------
                     Name:  Ann E. Morris
                     Title:  Asst Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                NEW YORK LIFE INSURANCE AND ANNUITY COPRORATION
                By: New York Life Investment Management, LLC, Its
                    Investment Manager

                By:      /s/ F. David Melka
                     ------------------------------
                     Name:  F. David Melka
                     Title:  Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                ELF FUNDING TRUST III
                By:  New York Life Investment Management, LLC, as Attorney-
                     in-Fact

                By:      /s/ F. David Melka
                     ------------------------------
                     Name:  F. David Melka
                     Title: Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                NYLIM HIGH YIELD CDO, 2001, LTD.
                By: New York Life Investment Management, LLC, as Investment
                    Manager and Attorney-in-Fact

                By:      /s/ F. David Melka
                     ------------------------------
                     Name:  F. David Melka
                     Title: Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                EMERALD ORCHARD LIMITED

                By:      /s/ Gwen Zirkle
                    ------------------------------
                    Name:  Gwen Zirkle
                    Title: Attorney-in-Fact

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                BLUE SQUARE FUNDING SERIES 3
                DEUTSCHE BANK TRUST CO. AMERICAS
                FKA BANKERS TRUST CO

                By:      /s/ Susan Anderson
                    ------------------------------
                    Name:  Susan Anderson
                    Title: Assistant Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                HIGHLAND LEGACY LIMITED
                By: Highland Capital Management, L.P. as Collateral Manager

                By:      /s/ Mark Okada
                    ------------------------------
                    Name:  Mark Okada
                    Title: Chief Investment Officer Highland
                           Capital Management, L.P.

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                ELF FUNDING TRUST I
                By: Highland Capital Management, L.P., as Collateral Manager

                By:      /s/ Mark Okada
                    ------------------------------
                    Name:  Mark Okada
                    Title: Chief Investment Officer Highland Capital
                           Management, L.P.

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                RESTORATION FUNDING CLO, LTD.
                By: Highland Capital Management, L.P., as Collateral Manager

                By:      /s/ Mark Okada
                    ------------------------------
                    Name:  Mark Okada
                    Title: Chief Investment Officer Highland Capital
                           Management, L.P.

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SL LOANS I LIMITED
                By: Highland Capital Management, L.P., as
                    Attorney-in-Fact

                By:      /s/ Mark Okada
                    ------------------------------
                    Name:  Mark Okada
                    Title:  Chief Investment Officer Highland Capital
                            Management, L.P.

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                GLENEAGLES TRADING LLC

                By:      /s/ Ann E. Morris
                    ------------------------------
                    Name:  Ann E. Morris
                    Title: Asst Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                STANWICH LOAN FUNDING LLC

                By:      /s/ Ann E. Morris
                    ------------------------------
                    Name:  Ann E. Morris
                    Title:  Asst Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                GRAYSTON CLO 2001-01 LTD.
                By: Bear Stearns Asset Management Inc. as its Collateral Manager

                By:      /s/ Niall D. Rosenzweig
                    ------------------------------
                    Name:  Niall D. Rosenzweig
                    Title:  Associate Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                GALLATIN FUNDING I LTD.
                By: Bear Stearns Asset Management Inc. as its Collateral Manager

                By:      /s/ Niall D. Rosenzweig
                    ------------------------------
                    Name:  Niall D. Rosenzweig
                    Title: Associate Director

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                GALAXY CLO 2003-I LTD.,
                By: CIBC, Inc., as Agent

                By:      /s/ John Livingston
                    ------------------------------
                    Name:  John Livingston
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                GULF STREAM - COMPASS CLO 2002-I, LTD.
                GULF STREAM ASSET MANAGEMENT, LLC

                By:      /s/ Barry K. Love
                    ------------------------------
                    Name:  Barry K. Love
                    Title: Chief Credit Officer

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                AMARA-1 FINANCE, LTD.
                By:  INVESCO Senior Secured Management, Inc. As Financial
                     Manager

                By:      /s/ Joseph Rotondo
                     ------------------------------
                     Name:  Joseph Rotondo
                     Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                AMARA-2 FINANCE, LTD.
                By: INVESCO Senior Secured Management, Inc. As Financial
                    Manager

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                AVALON CAPITAL LTD.
                By:  INVESCO Senior Secured Management, Inc. As Portfolio
                     Advisor

                By:      /s/ Joseph Rotondo
                     ------------------------------
                     Name:  Joseph Rotondo
                     Title:  Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                CHARTER VIEW PORTFOLIO
                By: INVESCO Senior Secured Management, Inc. As Investment
                    Advisor

                By:      /s/ Joseph Rotondo
                     ------------------------------
                     Name:  Joseph Rotondo
                     Title:  Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                DIVERSIFIED CREDIT PORTFOLIO LTD.
                By: INVESCO Senior Secured Management, Inc. As Investment
                    Advisor

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                AIM FLOATING RATE FUND
                By: INVESCO Senior Secured Management, Inc. As
                    Attorney-in-Fact

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                INVESCO EUROPEAN CDO I S.A.
                By: INVESCO Senior Secured Management, Inc. As Collateral
                    Manager

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SEQUILS-LIBERTY, LTD.
                By: INVESCO Senior Secured Management, Inc. As Collateral
                    Manager

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SARATOGA CLO I, LIMITED
                By: INVESCO Senior Secured Management, Inc. As Asset
                    Manager

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                AVALON CAPITAL LTD. 2
                By: INVESCO Senior Secured Management, Inc. As Portfolio
                    Advisor

                By:      /s/ Joseph Rotondo
                    ------------------------------
                    Name:  Joseph Rotondo
                    Title: Authorized Signatory

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                OCTAGON INVESTMENT PARTNERS II, LLC
                By: Octagon Credit Investors, LLC as sub-investment manager

                By:      /s/ Michael B. Nechamkin
                    ------------------------------
                    Name:  Michael B. Nechamkin
                    Title: Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                OCTAGON INVESTMENT PARTNERS III, LTD.
                By: Octagon Credit Investors, LLC as Portfolio Manager

                By:      /s/ Michael B. Nechamkin
                    ------------------------------
                    Name:  Michael B. Nechamkin
                    Title: Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                OCTAGON INVESTMENT PARTNERS IV, LTD.
                By: Octagon Credit Investors, LLC as collateral manager

                By:      /s/ Michael B. Nechamkin
                    ------------------------------
                    Name:  Michael B. Nechamkin
                    Title: Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                OCTAGON INVESTMENT PARTNERS V, LTD.
                By: Octagon Credit Investors, LLC as Portfolio Manager

                By:      /s/ Michael B. Nechamkin
                    ------------------------------
                    Name:  Michael B. Nechamkin
                    Title: Portfolio Manager

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SEQUILS-GLACE BAY, LTD.
                By: Royal Bank of Canada as Collateral Manager

                By:      /s/ Melissa Marano
                    ------------------------------
                    Name:  Melissa Marano
                    Title: Partner

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                TORONTO DOMINION (NEW YORK), INC.

                By:      /s/ Gwen Zirkle
                    ------------------------------
                    Name:  Gwen Zirkle
                    Title: Vice President

<PAGE>

                SIGNATURE PAGE TO THE FIRST AMENDMENT AND CONSENT DATED AS OF
                MAY 13, 2003, TO THE CREDIT AGREEMENT DATED AS OF FEBRUARY 14,
                2003, AMONG GRAHAM PACKAGING HOLDINGS COMPANY, GRAHAM PACKAGING
                COMPANY, L.P., GPC CAPITAL CORP. I, THE LENDERS FROM TIME TO
                TIME PARTY THERETO, LASALLE BANK NATIONAL ASSOCIATION, AS
                DOCUMENTATION AGENT, DEUTSCHE BANK TRUST COMPANY AMERICAS, AS
                ADMINISTRATIVE AGENT AND SALOMON SMITH BARNEY INC., AS
                SYNDICATION AGENT

                NAME OF INSTITUTION:
                SUNAMERICA LIFE INSURANCE COMPANY

                By:      /s/ W. Jeffrey Baxter
                     ------------------------------
                     Name:  W. Jeffrey Baxter
                     Title: Authorized Agent

                GALAXY CLO 1999-1, LTD.

                By:      /s/ W. Jeffrey Baxter
                     ------------------------------
                     Name:  W. Jeffrey Baxter
                     Title:  Authorized Agent

<PAGE>

Acknowledged and Agreed:

GPC CAPITAL CORP. II

By:  /s/ John E. Hamilton
     ---------------------------------------
     Name:  John E. Hamilton
     Title:   Vice President, Secretary and Assistant Treasurer

GRAHAM PACKAGING POLAND, L.P.
           By: GPC Sub GP LLC, its general partner
GRAHAM RECYCLING COMPANY, L.P.
           By: GPC Sub GP LLC, its general partner
GRAHAM PACKAGING FRANCE PARTNERS
           By: GPC Sub GP LLC, its general partner
GRAHAM PACKAGING LATIN AMERICA, LLC
GPC SUB GP LLC
GPC OPCO GP LLC
GRAHAM PACKAGING WEST JORDAN, LLC

         on behalf of each of the above Subsidiary Guarantors

By:      /s/ John E. Hamilton
     ----------------------------------------------------
     Name:  John E. Hamilton
     Title:   Authorized Officer<PAGE>

                                                                   Exhibit 10(a)

                     FIRST AMENDMENT TO EMPLOYMENT AGREEMENT

         This is the First Amendment to the Employment Agreement ("Agreement")
between Lindsay Manufacturing Co., a Delaware corporation ("LINDSAY") and
Richard W. Parod ("PAROD"), which was entered into on March 8, 2000, and under
which PAROD commenced employment on April 5, 2000.

                                       I.

         Paragraph 2 of the Agreement is hereby amended to extend the Term of
the Agreement for two additional years, so that, unless terminated at an earlier
date in accordance with Paragraph 4 of the Agreement, the Term shall continue in
effect until the fifth anniversary of the Commencement Date, which will be April
5, 2005.

                                       II.

         Paragraph 3 G of the Agreement is hereby amended to revise the last
subparagraph thereof to read as follows:

                  "Use of an automobile of PAROD's choice owned or leased by
         LINDSAY with a purchase price up to a maximum of $60,000, which PAROD
         may replace at intervals of at least three years."

                                      III.

         Paragraph 10 of the Agreement is hereby amended to read as follows:

                  "10. Non-Competition. For a period of one (1) year after
         termination of his employment with LINDSAY without Cause pursuant to
         Paragraph 4B or two (2) years after termination of his employment with
         LINDSAY for any other reason, PAROD will not engage or invest in, work
         for (directly or indirectly) or contribute his knowledge to any person
         or entity, company or work which is directly competitive in the
         irrigation business with the products, processor or business of
         LINDSAY, excluding any products, processes or businesses of LINDSAY
         which have projected annual revenues of less than Ten Million Dollars
         ($10,000,000) at the time of his termination of employment."

                                       IV.

         Paragraph 17 of the Agreement is hereby amended to change the address
for notices to PAROD to: 4204 N. 195th Street, Elkhorn, NE  68022.

                                       V.

         All other terms and conditions of the Agreement are hereby ratified and
confirmed. All defined terms which are used herein shall have the same meaning
as in the Agreement, except as modified herein.

         IN WITNESS WHEREOF, the parties have executed the First Amendment to
the Agreement on May 2, 2003, to be effective as of April 5, 2003.

                                         By:    /s/ RICHARD W. PAROD
                                                --------------------
                                                Richard W. Parod

                                         LINDSAY MANUFACTURING CO.

                                         By:    /s/ MICHAEL N. CHRISTODOLOU
                                                ---------------------------
                                                Michael N. Christodolou
                                                Chairman of the Board

                                       5

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