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                                                                     EXHIBIT 3.9

                          SECOND AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                      SHAMROCK LOGISTICS OPERATIONS, L.P.

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                               TABLE OF CONTENTS

<Table>
                                                                                                              
ARTICLE I
     DEFINITIONS .................................................................................................2
     SECTION 1.1   DEFINITIONS ...................................................................................2
     SECTION 1.2   CONSTRUCTION .................................................................................12

ARTICLE II
     ORGANIZATION ...............................................................................................13
     SECTION 2.1   FORMATION ....................................................................................13
     SECTION 2.2   NAME .........................................................................................13
     SECTION 2.3   REGISTERED OFFICE; REGISTERED AGENT; PRINCIPAL OFFICE; OTHER OFFICES .........................13
     SECTION 2.4   PURPOSE AND BUSINESS .........................................................................14
     SECTION 2.5   POWERS .......................................................................................14
     SECTION 2.6   POWER OF ATTORNEY ............................................................................14
     SECTION 2.7   TERM .........................................................................................16
     SECTION 2.8   TITLE TO PARTNERSHIP ASSETS ..................................................................16

ARTICLE III
     RIGHTS OF LIMITED PARTNERS .................................................................................17
     SECTION 3.1   LIMITATION OF LIABILITY ......................................................................17
     SECTION 3.2   MANAGEMENT OF BUSINESS .......................................................................17
     SECTION 3.3   OUTSIDE ACTIVITIES OF THE LIMITED PARTNERS ...................................................17
     SECTION 3.4   RIGHTS OF LIMITED PARTNERS ...................................................................17

ARTICLE IV
     TRANSFERS OF PARTNERSHIP INTERESTS .........................................................................18
     SECTION 4.1   TRANSFER GENERALLY ...........................................................................18
     SECTION 4.2   TRANSFER OF GENERAL PARTNER'S PARTNERSHIP INTEREST ...........................................19
     SECTION 4.3   TRANSFER OF A LIMITED PARTNER'S PARTNERSHIP INTEREST .........................................19
     SECTION 4.4   RESTRICTIONS ON TRANSFERS ....................................................................19

ARTICLE V
     CAPITAL CONTRIBUTIONS AND ISSUANCE OF PARTNERSHIP INTERESTS ................................................20
     SECTION 5.1   INITIAL CONTRIBUTIONS ........................................................................20
     SECTION 5.2   CONTRIBUTIONS PURSUANT TO THE CONTRIBUTION AGREEMENT .........................................20
     SECTION 5.3   ADDITIONAL CAPITAL CONTRIBUTIONS .............................................................22
     SECTION 5.4   INTEREST AND WITHDRAWAL ......................................................................22
     SECTION 5.5   CAPITAL ACCOUNTS .............................................................................22
     SECTION 5.6   LOANS FROM PARTNERS ..........................................................................25
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     SECTION 5.7   LIMITED PREEMPTIVE RIGHTS ....................................................................25
     SECTION 5.8   FULLY PAID AND NON-ASSESSABLE NATURE OF PARTNERSHIP INTERESTS ................................26

ARTICLE VI
     ALLOCATIONS AND DISTRIBUTIONS ..............................................................................26
     SECTION 6.1   ALLOCATIONS FOR CAPITAL ACCOUNT PURPOSES .....................................................26
     SECTION 6.2   ALLOCATIONS FOR TAX PURPOSES .................................................................30
     SECTION 6.3   DISTRIBUTIONS ................................................................................33

ARTICLE VII
     MANAGEMENT AND OPERATION OF BUSINESS .......................................................................33
     SECTION 7.1   MANAGEMENT ...................................................................................33
     SECTION 7.2   CERTIFICATE OF LIMITED PARTNERSHIP ...........................................................35
     SECTION 7.3   RESTRICTIONS ON GENERAL PARTNER'S AUTHORITY ..................................................36
     SECTION 7.4   REIMBURSEMENT OF THE GENERAL PARTNER .........................................................36
     SECTION 7.5   OUTSIDE ACTIVITIES ...........................................................................37
     SECTION 7.6   LOANS FROM THE GENERAL PARTNER; LOANS OR CONTRIBUTIONS FROM THE PARTNERSHIP;
                    CONTRACTS WITH AFFILIATES; CERTAIN RESTRICTIONS ON THE GENERAL PARTNER ......................39
     SECTION 7.7   INDEMNIFICATION ..............................................................................40
     SECTION 7.8   LIABILITY OF INDEMNITEES .....................................................................42
     SECTION 7.9   RESOLUTION OF CONFLICTS OF INTEREST ..........................................................43
     SECTION 7.10  OTHER MATTERS CONCERNING THE GENERAL PARTNER .................................................44
     SECTION 7.11  RELIANCE BY THIRD PARTIES ....................................................................45

ARTICLE VIII
     BOOKS, RECORDS, ACCOUNTING AND REPORTS .....................................................................46
     SECTION 8.1   RECORDS AND ACCOUNTING .......................................................................46
     SECTION 8.2   FISCAL YEAR ..................................................................................46

ARTICLE IX
     TAX MATTERS ................................................................................................46
     SECTION 9.1   TAX RETURNS AND INFORMATION ..................................................................46
     SECTION 9.2   TAX ELECTIONS ................................................................................46
     SECTION 9.3   TAX CONTROVERSIES ............................................................................47
     SECTION 9.4   WITHHOLDING ..................................................................................47

ARTICLE X
     ADMISSION OF PARTNERS ......................................................................................47
     SECTION 10.1  ADMISSION OF GENERAL PARTNER .................................................................47
     SECTION 10.2  ADMISSION OF SUBSTITUTED LIMITED PARTNER .....................................................48
     SECTION 10.3  ADMISSION OF ADDITIONAL LIMITED PARTNERS .....................................................48
     SECTION 10.4  ADMISSION OF SUCCESSOR OR TRANSFEREE GENERAL PARTNER .........................................49
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     SECTION 10.5  AMENDMENT OF AGREEMENT AND CERTIFICATE OF LIMITED PARTNERSHIP.................................49

ARTICLE XI
     WITHDRAWAL OR REMOVAL OF PARTNERS ..........................................................................49
     SECTION 11.1  WITHDRAWAL OF THE GENERAL PARTNER ............................................................49
     SECTION 11.2  REMOVAL OF THE GENERAL PARTNER ...............................................................51
     SECTION 11.3  INTEREST OF DEPARTING PARTNER ................................................................51
     SECTION 11.4  WITHDRAWAL OF A LIMITED PARTNER ..............................................................52

ARTICLE XII
     DISSOLUTION AND LIQUIDATION ................................................................................52
     SECTION 12.1  DISSOLUTION ..................................................................................52
     SECTION 12.2  CONTINUATION OF THE BUSINESS OF THE PARTNERSHIP AFTER DISSOLUTION ............................52
     SECTION 12.3  LIQUIDATOR ...................................................................................53
     SECTION 12.4  LIQUIDATION ..................................................................................54
     SECTION 12.5  CANCELLATION OF CERTIFICATE OF LIMITED PARTNERSHIP ...........................................55
     SECTION 12.6  RETURN OF CONTRIBUTIONS ......................................................................55
     SECTION 12.7  WAIVER OF PARTITION ..........................................................................55
     SECTION 12.8  CAPITAL ACCOUNT RESTORATION ..................................................................55

ARTICLE XIII
     AMENDMENT OF PARTNERSHIP AGREEMENT .........................................................................56
     SECTION 13.1  AMENDMENT TO BE ADOPTED SOLELY BY THE GENERAL PARTNER ........................................56
     SECTION 13.2  AMENDMENT PROCEDURES .........................................................................57

ARTICLE XIV
     MERGER .....................................................................................................58
     SECTION 14.1  AUTHORITY ....................................................................................58
     SECTION 14.2  PROCEDURE FOR MERGER OR CONSOLIDATION ........................................................58
     SECTION 14.3  APPROVAL BY LIMITED PARTNERS OF MERGER OR CONSOLIDATION ......................................59
     SECTION 14.4  CERTIFICATE OF MERGER ........................................................................60
     SECTION 14.5  EFFECT OF MERGER .............................................................................60

ARTICLE XV
     GENERAL PROVISIONS .........................................................................................60
     SECTION 15.1  ADDRESSES AND NOTICES ........................................................................60
     SECTION 15.2  FURTHER ACTION ...............................................................................61
     SECTION 15.3  BINDING EFFECT ...............................................................................61
     SECTION 15.4  INTEGRATION ..................................................................................61
     SECTION 15.5  CREDITORS ....................................................................................61
     SECTION 15.6  WAIVER .......................................................................................61
     SECTION 15.7  COUNTERPARTS .................................................................................61
     SECTION 15.8  APPLICABLE LAW ...............................................................................62
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     SECTION 15.9  INVALIDITY OF PROVISIONS .....................................................................62
     SECTION 15.10 CONSENT OF PARTNERS ..........................................................................62
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                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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                          SECOND AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                                       OF
                      SHAMROCK LOGISTICS OPERATIONS, L.P.

        THIS SECOND AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP of
SHAMROCK LOGISTICS OPERATIONS, L.P., dated as of April 16, 2001, is entered into
by and among Riverwalk Logistics, L.P., a Delaware limited partnership, as the
General Partner, Todd Walker, as the Organizational Limited Partner, and
Shamrock Logistics, L.P., a Delaware limited partnership, as the Limited
Partner, together with any other Persons who hereafter become Partners in the
Partnership or parties hereto as provided herein.

                                R E C I T A L S:
                                - - - - - - - -

        WHEREAS, Shamrock Logistics GP, LLC, a Delaware limited liability
company ("SHAMROCK GP"), and Todd Walker formed the Partnership pursuant to the
Agreement of Limited Partnership of Shamrock Logistics Operations, L.P. dated as
of December 7, 1999 (the "PRIOR AGREEMENT") and a Certificate of Limited
Partnership filed with the Secretary of State of the State of Delaware on such
date; and

        WHEREAS, on June 5, 2000 the Certificate of Limited Partnership of the
Partnership was thereby amended to reflect the substitution of Riverwalk
Logistics, L.P. as general partner of the Partnership, and the withdrawal of
Shamrock GP from the Partnership, in its entirety; and

        WHEREAS, pursuant to certain mergers that were consummated on June 30,
2000 and certain contributions that occurred on July 1, 2000, Diamond Shamrock
Refining and Marketing Company, a Delaware corporation ("DSRMC"), and Sigmor
Corporation, a Delaware corporation, received limited partner interests in the
Partnership; and

        WHEREAS, on August 10, 2000 the Prior Agreement was thereby amended to
reflect the substitution of Riverwalk Logistics, L.P. as general partner of the
Partnership, and the withdrawal of Shamrock GP from the Partnership, in its
entirety (as amended, the "FIRST AMENDED AGREEMENT"); and

        WHEREAS, the Partners of the Partnership now desire to amend the First
Amended Agreement to reflect (i) the addition of Shamrock Logistics, L.P. as a
limited partner of the Partnership, (ii) additional contributions by the
Partners and (iii) certain other matters.

        NOW, THEREFORE, in consideration of the covenants, conditions and
agreements contained herein, the parties hereto hereby amend the First Amended
Agreement and, as so amended, restate it in its entirety as follows:

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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                                    ARTICLE I
                                   DEFINITIONS

SECTION 1.1   DEFINITIONS.

        The following definitions shall be for all purposes, unless otherwise
clearly indicated to the contrary, applied to the terms used in this Agreement.
Capitalized terms used herein but not otherwise defined shall have the meaning
assigned to such term in the MLP Agreement.

               "ADDITIONAL LIMITED PARTNER" means a Person admitted to the
        Partnership as a Limited Partner pursuant to Section 10.3 and who is
        shown as such on the books and records of the Partnership.

               "ADJUSTED CAPITAL ACCOUNT" means the Capital Account maintained
        for each Partner as of the end of each fiscal year of the Partnership,
        (a) increased by any amounts that such Partner is obligated to restore
        under the standards set by Treasury Regulation Section
        1.704-1(b)(2)(ii)(c)(or is deemed obligated to restore under Treasury
        Regulation Sections 1.704-2(g) and 1.704-2(i)(5)) and (b) decreased by
        (i) the amount of all losses and deductions that, as of the end of such
        fiscal year, are reasonably expected to be allocated to such Partner in
        subsequent years under Sections 704(e)(2) and 706(d) of the Code and
        Treasury Regulation Section 1.751-1(b)(2)(ii), and (ii) the amount of
        all distributions that, as of the end of such fiscal year, are
        reasonably expected to be made to such Partner in subsequent years in
        accordance with the terms of this Agreement or otherwise to the extent
        they exceed offsetting increases to such Partner's Capital Account that
        are reasonably expected to occur during (or prior to) the year in which
        such distributions are reasonably expected to be made (other than
        increases as a result of a minimum gain chargeback pursuant to Section
        6.1(d)(i) or 6.1(d)(ii)). The foregoing definition of Adjusted Capital
        Account is intended to comply with the provisions of Treasury Regulation
        Section 1.704-1(b)(2)(ii)(d) and shall be interpreted consistently
        therewith. The "ADJUSTED CAPITAL ACCOUNT" of a Partner in respect of a
        General Partner Interest or any other specified interest in the
        Partnership shall be the amount which such Adjusted Capital Account
        would be if such General Partner Interest or other interest in the
        Partnership were the only interest in the Partnership held by a Partner
        from and after the date on which such General Partner Interest or other
        interest was first issued.

               "ADJUSTED PROPERTY" means any property the Carrying Value of
        which has been adjusted pursuant to Section 5.5(d)(i) or 5.5(d)(ii).

               "AFFILIATE" means, with respect to any Person, any other Person
        that directly or indirectly through one or more intermediaries controls,
        is controlled by or is under common control with, the Person in
        question. As used herein, the term "CONTROL" means the possession,
        direct or indirect, of the power to direct or cause the direction of the

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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        management and policies of a Person, whether through ownership of voting
        securities, by contract or otherwise.

               "AGREED ALLOCATION" means any allocation, other than a Required
        Allocation, of an item of income, gain, loss or deduction pursuant to
        the provisions of Section 6.1, including, without limitation, a Curative
        Allocation (if appropriate to the context in which the term "AGREED
        ALLOCATION" is used).

               "AGREED VALUE" of any Contributed Property means the fair market
        value of such property or other consideration at the time of
        contribution as determined by the General Partner using such reasonable
        method of valuation as it may adopt. The General Partner shall, in its
        discretion, use such method as it deems reasonable and appropriate to
        allocate the aggregate Agreed Value of Contributed Properties
        contributed to the Partnership in a single or integrated transaction
        among each separate property on a basis proportional to the fair market
        value of each Contributed Property.

               "AGREEMENT" means this Second Amended and Restated Agreement of
        Limited Partnership of Shamrock Logistics Operations, L.P., as it may be
        amended, supplemented or restated from time to time.

               "ASSIGNEE" means a Person to whom one or more Partnership
        Interests have been transferred in a manner permitted under this
        Agreement, but who has not been admitted as a Substituted Limited
        Partner.

               "ASSOCIATE" means, when used to indicate a relationship with any
        Person, (a) any corporation or organization of which such Person is a
        director, officer or partner or is, directly or indirectly, the owner of
        20% or more of any class of voting stock or other voting interest; (b)
        any trust or other estate in which such Person has at least a 20%
        beneficial interest or as to which such Person serves as trustee or in a
        similar fiduciary capacity; and (c) any relative or spouse of such
        Person, or any relative of such spouse, who has the same principal
        residence as such Person.

               "AVAILABLE CASH" means, with respect to any Quarter ending prior
        to the Liquidation Date, and without duplication:

                      (a)  the sum of (i) all cash and cash equivalents of the
        Partnership Group on hand at the end of such Quarter, and (ii) all
        additional cash and cash equivalents of the Partnership Group on hand on
        the date of determination of Available Cash with respect to such Quarter
        resulting from Working Capital Borrowings made subsequent to the end of
        such Quarter, less

                      (b)  the amount of any cash reserves that is necessary or
        appropriate in the reasonable discretion of the General Partner to (i)
        provide for the proper conduct of

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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        the business of the Partnership Group (including reserves for future
        capital expenditures and for anticipated future credit needs of the
        Partnership Group) subsequent to such Quarter, (ii) comply with
        applicable law or any loan agreement, security agreement, mortgage, debt
        instrument or other agreement or obligation to which any Group Member is
        a party or by which it is bound or its assets are subject or (iii)
        provide funds for distributions under Section 6.4 or 6.5 of the MLP
        Agreement in respect of any one or more of the next four Quarters;
        PROVIDED, HOWEVER, that the General Partner may not establish cash
        reserves pursuant to (iii) above if the effect of such reserves would be
        that the MLP is unable to distribute the Minimum Quarterly Distribution
        on all Common Units, plus any Cumulative Common Unit Arrearage on all
        Common Units, with respect to such Quarter; and PROVIDED FURTHER, that
        disbursements made by a Group Member or cash reserves established,
        increased or reduced after the end of such Quarter but on or before the
        date of determination of Available Cash with respect to such Quarter
        shall be deemed to have been made, established, increased or reduced,
        for purposes of determining Available Cash, within such Quarter if the
        General Partner so determines.

                      Notwithstanding the foregoing, "AVAILABLE CASH" with
        respect to the Quarter in which the Liquidation Date occurs and any
        subsequent Quarter shall equal zero.

               "BOOK-TAX DISPARITY" means with respect to any item of
        Contributed Property or Adjusted Property, as of the date of any
        determination, the difference between the Carrying Value of such
        Contributed Property or Adjusted Property and the adjusted basis thereof
        for federal income tax purposes as of such date. A Partner's share of
        the Partnership's Book-Tax Disparities in all of its Contributed
        Property and Adjusted Property will be reflected by the difference
        between such Partner's Capital Account balance as maintained pursuant to
        Section 5.5 and the hypothetical balance of such Partner's Capital
        Account computed as if it had been maintained strictly in accordance
        with federal income tax accounting principles.

               "BUSINESS DAY" means Monday through Friday of each week, except
        that a legal holiday recognized as such by the government of the United
        States of America or the states of New York or Texas shall not be
        regarded as a Business Day.

               "CAPITAL ACCOUNT" means the capital account maintained for a
        Partner pursuant to Section 5.5. The "CAPITAL ACCOUNT" of a Partner in
        respect of a General Partner Interest or any other specified interest in
        the Partnership shall be the amount which such Capital Account would be
        if such General Partner Interest or other specified interest in the
        Partnership were the only interest in the Partnership held by a Partner
        from and after the date on which such General Partner Interest or other
        specified interest in the Partnership was first issued.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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               "CAPITAL CONTRIBUTION" means any cash, cash equivalents or the
        Net Agreed Value of Contributed Property that a Partner contributes to
        the Partnership pursuant to this Agreement or the Contribution
        Agreement.

               "CARRYING VALUE" means (a) with respect to a Contributed
        Property, the Agreed Value of such property reduced (but not below zero)
        by all depreciation, amortization and cost recovery deductions charged
        to the Partners' and Assignees' Capital Accounts in respect of such
        Contributed Property, and (b) with respect to any other Partnership
        property, the adjusted basis of such property for federal income tax
        purposes, all as of the time of determination. The Carrying Value of any
        property shall be adjusted from time to time in accordance with Sections
        5.5(d)(i) and 5.5(d)(ii) and to reflect changes, additions or other
        adjustments to the Carrying Value for dispositions and acquisitions of
        Partnership properties, as deemed appropriate by the General Partner.

               "CERTIFICATE OF LIMITED PARTNERSHIP" means the Certificate of
        Limited Partnership of the Partnership filed with the Secretary of State
        of the State of Delaware as referenced in the recitals, as such
        Certificate of Limited Partnership may be amended, supplemented or
        restated from time to time.

               "CLOSING DATE" means the first date on which Common Units are
        sold by the MLP to the Underwriters pursuant to the provisions of the
        Underwriting Agreement.

               "CODE" means the Internal Revenue Code of 1986, as amended and in
        effect from time to time. Any reference herein to a specific section or
        sections of the Code shall be deemed to include a reference to any
        corresponding provision of successor law.

               "COMMISSION" means the United States Securities and Exchange
        Commission.

               "COMMON UNIT" has the meaning assigned to such term in the MLP
        Agreement.

               "CONTRIBUTED PROPERTY" means each property or other asset, in
        such form as may be permitted by the Delaware Act, but excluding cash,
        contributed to the Partnership. Once the Carrying Value of a Contributed
        Property is adjusted pursuant to Section 5.5(d), such property shall no
        longer constitute a Contributed Property, but shall be deemed an
        Adjusted Property.

               "CONTRIBUTION AGREEMENT" means that certain Contribution
        Agreement, dated as of the Closing Date, among the General Partner, the
        MLP, the Partnership and certain other parties named therein, together
        with the additional conveyance documents and instruments contemplated or
        referenced thereunder.

               "CURATIVE ALLOCATION" means any allocation of an item of income,
        gain, deduction, loss or credit pursuant to the provisions of Section
        6.1(d)(ix).

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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               "DELAWARE ACT" means the Delaware Revised Uniform Limited
        Partnership Act, 6 Del. C.section.17-101, et seq., as amended,
        supplemented or restated from time to time, and any successor to such
        statute.

               "DEPARTING PARTNER" means a former General Partner from and after
        the effective date of any withdrawal or removal of such former General
        Partner pursuant to Section 11.1 or 11.2.

               "DSRMC" has the meaning assigned to such term in the recitals.

               "ECONOMIC RISK OF LOSS" has the meaning set forth in Treasury
        Regulation Section 1.752-2(a).

               "EVENT OF WITHDRAWAL" has the meaning assigned to such term in
        Section 11.1(a).

               "FIRST AMENDED AGREEMENT" is defined in the recitals.

               "GENERAL PARTNER" means Riverwalk Logistics, L.P. and its
        successors and permitted assigns as general partner of the Partnership.

               "GENERAL PARTNER INTEREST" means the ownership interest of the
        General Partner in the Partnership (in its capacity as a general
        partner) and includes any and all benefits to which the General Partner
        is entitled as provided in this Agreement, together with all obligations
        of the General Partner to comply with the terms and provisions of this
        Agreement.

               "GROUP MEMBER" means a member of the Partnership Group.

               "INDEMNITEE" means (a) the General Partner, (b) any Departing
        Partner, (c) any Person who is or was an Affiliate of the General
        Partner or any Departing Partner, (d) any Person who is or was a member,
        partner, officer, director, employee, agent or trustee of any Group
        Member, the General Partner or any Departing Partner or any Affiliate of
        any Group Member, the General Partner or any Departing Partner, and (e)
        any Person who is or was serving at the request of the General Partner
        or any Departing Partner or any Affiliate of the General Partner or any
        Departing Partner as an officer, director, employee, member, partner,
        agent, fiduciary or trustee of another Person; PROVIDED, that a Person
        shall not be an Indemnitee by reason of providing, on a fee-for-services
        basis, trustee, fiduciary or custodial services.

               "INITIAL OFFERING" means the initial offering and sale of Common
        Units to the public, as described in the Registration Statement.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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               "LIMITED PARTNER" means any Person that is admitted to the
        Partnership as a limited partner pursuant to the terms and conditions of
        this Agreement; but the term Limited Partner shall not include any
        Person from and after the time such Person withdraws as a Limited
        Partner from the Partnership.

               "LIMITED PARTNER INTEREST" means the ownership interest of a
        Limited Partner or Assignee in the Partnership and includes any and all
        benefits to which such Limited Partner or Assignee is entitled as
        provided in this Agreement, together with all obligations of such
        Limited Partner or Assignee to comply with the terms and provisions of
        this Agreement.

               "LIQUIDATION DATE" means (a) in the case of an event giving rise
        to the dissolution of the Partnership of the type described in clauses
        (a) and (b) of the first sentence of Section 12.2, the date on which the
        applicable time period during which the Partners have the right to elect
        to reconstitute the Partnership and continue its business has expired
        without such an election being made, and (b) in the case of any other
        event giving rise to the dissolution of the Partnership, the date on
        which such event occurs.

               "LIQUIDATOR" means one or more Persons selected by the General
        Partner to perform the functions described in Section 12.3 as
        liquidating trustee of the Partnership within the meaning of the
        Delaware Act.

               "MERGER AGREEMENT" has the meaning assigned to such term in
        Section 14.1.

               "MINIMUM QUARTERLY DISTRIBUTION" has the meaning assigned to such
        term in the MLP Agreement.

               "MLP" means Shamrock Logistics, L.P.

               "MLP AGREEMENT" means the Second Amended and Restated Agreement
        of Limited Partnership of Shamrock Logistics, L.P., as it may be
        amended, supplemented or restated from time to time.

               "MLP SECURITY" has the meaning assigned to the term "Partnership
        Security" in the MLP Agreement.

               "NATIONAL SECURITIES EXCHANGE" has the meaning assigned to such
        term in the MLP Agreement.

               "NET AGREED VALUE" means, (a) in the case of any Contributed
        Property, the Agreed Value of such property reduced by any liabilities
        either assumed by the Partnership upon such contribution or to which
        such property is subject when contributed, and (b) in the case of any
        property distributed to a Partner or Assignee by the Partnership,

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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        the Partnership's Carrying Value of such property (as adjusted pursuant
        to Section 5.5(d)(ii)) at the time such property is distributed, reduced
        by any indebtedness either assumed by such Partner or Assignee upon such
        distribution or to which such property is subject at the time of
        distribution, in either case, as determined under Section 752 of the
        Code.

               "NEW DEBT" has the meaning assigned to such term in Section
        5.2(f).

               "NET INCOME" means, for any taxable year, the excess, if any, of
        the Partnership's items of income and gain (other than those items taken
        into account in the computation of Net Termination Gain or Net
        Termination Loss) for such taxable year over the Partnership's items of
        loss and deduction (other than those items taken into account in the
        computation of Net Termination Gain or Net Termination Loss) for such
        taxable year. The items included in the calculation of Net Income shall
        be determined in accordance with Section 5.5(b) and shall not include
        any items specially allocated under Section 6.1(d).

               "NET LOSS" means, for any taxable year, the excess, if any, of
        the Partnership's items of loss and deduction (other than those items
        taken into account in the computation of Net Termination Gain or Net
        Termination Loss) for such taxable year over the Partnership's items of
        income and gain (other than those items taken into account in the
        computation of Net Termination Gain or Net Termination Loss) for such
        taxable year. The items included in the calculation of Net Loss shall be
        determined in accordance with Section 5.5(b) and shall not include any
        items specially allocated under Section 6.1(d).

               "NET TERMINATION GAIN" means, for any taxable year, the sum, if
        positive, of all items of income, gain, loss or deduction recognized by
        the Partnership after the Liquidation Date. The items included in the
        determination of Net Termination Gain shall be determined in accordance
        with Section 5.5(b) and shall not include any items of income, gain or
        loss specially allocated under Section 6.1(d).

               "NET TERMINATION LOSS" means, for any taxable year, the sum, if
        negative, of all items of income, gain, loss or deduction recognized by
        the Partnership after the Liquidation Date. The items included in the
        determination of Net Termination Loss shall be determined in accordance
        with Section 5.5(b) and shall not include any items of income, gain or
        loss specially allocated under Section 6.1(d).

               "NONRECOURSE BUILT-IN GAIN" means with respect to any Contributed
        Properties or Adjusted Properties that are subject to a mortgage or
        pledge securing a Nonrecourse Liability, the amount of any taxable gain
        that would be allocated to the Partners pursuant to Sections
        6.2(b)(i)(A), 6.2(b)(ii)(A) and 6.2(b)(iii) if such properties were
        disposed of in a taxable transaction in full satisfaction of such
        liabilities and for no other consideration.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                       -8-
<Page>

               "NONRECOURSE DEDUCTIONS" means any and all items of loss,
        deduction or expenditure (including, without limitation, any expenditure
        described in Section 705(a)(2)(B) of the Code) that, in accordance with
        the principles of Treasury Regulation Section 1.704-2(b), are
        attributable to a Nonrecourse Liability.

               "NONRECOURSE LIABILITY" has the meaning set forth in Treasury
        Regulation Section 1.752-1(a)(2).

               "OMNIBUS AGREEMENT" has the meaning assigned to such term in the
        MLP Agreement.

               "OPINION OF COUNSEL" means a written opinion of counsel (which
        may be regular counsel to the Partnership or the General Partner or any
        of its Affiliates) acceptable to the General Partner in its reasonable
        discretion.

               "ORGANIZATIONAL LIMITED PARTNER" means Todd Walker in his
        capacity as the organizational limited partner of the Partnership
        pursuant to this Agreement.

               "PARTNER NONRECOURSE DEBT" has the meaning set forth in Treasury
        Regulation Section 1.704-2(b)(4).

               "PARTNER NONRECOURSE DEBT MINIMUM GAIN" has the meaning set forth
        in Treasury Regulation Section 1.704-2(i)(2).

               "PARTNER NONRECOURSE DEDUCTIONS" means any and all items of loss,
        deduction or expenditure (including, without limitation, any expenditure
        described in Section 705(a)(2)(B) of the Code) that, in accordance with
        the principles of Treasury Regulation Section 1.704-2(i), are
        attributable to a Partner Nonrecourse Debt.

               "PARTNERS" means the General Partner and the Limited Partners.

               "PARTNERSHIP" means Shamrock Logistics Operations, L.P., a
        Delaware limited partnership, and any successors thereto.

               "PARTNERSHIP GROUP" means the Partnership and any Subsidiary of
        any such entity, treated as a single consolidated entity.

               "PARTNERSHIP INTEREST" means an ownership interest of a Partner
        in the Partnership, which shall include the General Partner Interest and
        the Limited Partner Interests.

               "PARTNERSHIP MINIMUM GAIN" means that amount determined in
        accordance with the principles of Treasury Regulation Section
        1.704-2(d).

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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<Page>

               "PERCENTAGE INTEREST" means the percentage interest in the
        Partnership held by each Partner upon completion of the transactions in
        Section 5.2 and shall mean, (a) as to the General Partner, 1.0101%, and
        (b) as to the Limited Partner, 98.9899%.

               "PERSON" means an individual or a corporation, limited liability
        company, partnership, joint venture, trust, unincorporated organization,
        association, government agency or political subdivision thereof or other
        entity.

               "PRIOR AGREEMENT" is defined in the recitals.

               "PRO RATA" means, when modifying Partners and Assignees,
        apportioned among all Partners and Assignees in accordance with their
        relative Percentage Interests.

               "QUARTER" means, unless the context requires otherwise, a fiscal
        quarter of the Partnership.

               "RECAPTURE INCOME" means any gain recognized by the Partnership
        (computed without regard to any adjustment required by Section 734 or
        Section 743 of the Code) upon the disposition of any property or asset
        of the Partnership, which gain is characterized as ordinary income
        because it represents the recapture of deductions previously taken with
        respect to such property or asset.

               "REGISTRATION STATEMENT" means the Registration Statement on Form
        S-1 (Registration No. 333-43668) as it has been or as it may be amended
        or supplemented from time to time, filed by the MLP with the Commission
        under the Securities Act to register the offering and sale of the Common
        Units in the Initial Offering.

               "REQUIRED ALLOCATIONS" means (a) any limitation imposed on any
        allocation of Net Losses or Net Termination Losses under Section 6.1(b)
        or 6.1(c)(ii) and (b) any allocation of an item of income, gain, loss or
        deduction pursuant to Section 6.1(d)(i), 6.1(d)(ii), 6.1(d)(iv),
        6.1(d)(vii) or 6.1(d)(ix).

               "RESIDUAL GAIN" OR "RESIDUAL LOSS" means any item of gain or
        loss, as the case may be, of the Partnership recognized for federal
        income tax purposes resulting from a sale, exchange or other disposition
        of a Contributed Property or Adjusted Property, to the extent such item
        of gain or loss is not allocated pursuant to Section 6.2(b)(i)(A) or
        6.2(b)(ii)(A), respectively, to eliminate Book-Tax Disparities.

               "RESTRICTED BUSINESS" has the meaning assigned to such term in
        the Omnibus Agreement.

               "SECURITIES ACT" means the Securities Act of 1933, as amended,
        supplemented or restated from time to time and any successor to such
        statute.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -10-
<Page>

               "SERVICES AGREEMENT" has the meaning assigned to such term in the
        MLP Agreement.

               "SHAMROCK GP" has the meaning assigned to such term in the
        recitals.

               "SKELLY-BELVIEU" has the meaning assigned to such term in Section
        2.4.

               "SKELLY-BELVIEU AGREEMENT" means the limited liability company
        operating agreement of Skelly-Belvieu Pipeline Company, LLC, as it may
        be amended, supplemented or restated from time to time.

               "SPECIAL APPROVAL" has the meaning assigned to such term in the
        MLP Agreement.

               "SUBORDINATED UNIT" has the meaning assigned to such term in the
        MLP Agreement.

               "SUBORDINATION PERIOD" has the meaning assigned to such term in
        the MLP Agreement.

               "SUBSIDIARY" means, with respect to any Person, (a) a corporation
        of which more than 50% of the voting power of shares entitled (without
        regard to the occurrence of any contingency) to vote in the election of
        directors or other governing body of such corporation is owned, directly
        or indirectly, at the date of determination, by such Person, by one or
        more Subsidiaries of such Person or a combination thereof, (b) a
        partnership (whether general or limited) in which such Person or a
        Subsidiary of such Person is, at the date of determination, a general or
        limited partner of such partnership, but only if more than 50% of the
        partnership interests of such partnership (considering all of the
        partnership interests of the partnership as a single class) is owned,
        directly or indirectly, at the date of determination, by such Person, by
        one or more Subsidiaries of such Person, or a combination thereof, or
        (c) any other Person (other than a corporation or a partnership) in
        which such Person, one or more Subsidiaries of such Person, or a
        combination thereof, directly or indirectly, at the date of
        determination, has (i) at least a majority ownership interest or (ii)
        the power to elect or direct the election of a majority of the directors
        or other governing body of such Person.

               "SUBSTITUTED LIMITED PARTNER" means a Person who is admitted as a
        Limited Partner to the Partnership pursuant to Section 10.2 in place of
        and with all the rights of a Limited Partner and who is shown as a
        Limited Partner on the books and records of the Partnership.

               "SURVIVING BUSINESS ENTITY" has the meaning assigned to such term
        in Section 14.2(b).

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -11-
<Page>

               "TRANSFER" has the meaning assigned to such term in Section
        4.1(a).

               "UDS LOGISTICS" has the meaning assigned to such term in Section
        5.2(b).

               "UNDERWRITER" means each Person named as an underwriter in
        Schedule I to the Underwriting Agreement who purchases Common Units
        pursuant thereto.

               "UNDERWRITING AGREEMENT" means the Underwriting Agreement dated
        April 9, 2001 among the Underwriters, the MLP, the Partnership and
        certain other parties, providing for the purchase of Common Units by
        such Underwriters.

               "UNIT" has the meaning assigned to such term in the MLP
        Agreement.

               "UNIT MAJORITY" has the meaning assigned to such term in the MLP
        Agreement.

               "UNREALIZED GAIN" attributable to any item of Partnership
        property means, as of any date of determination, the excess, if any, of
        (a) the fair market value of such property as of such date (as
        determined under Section 5.5(d)) over (b) the Carrying Value of such
        property as of such date (prior to any adjustment to be made pursuant to
        Section 5.5(d) as of such date).

               "UNREALIZED LOSS" attributable to any item of Partnership
        property means, as of any date of determination, the excess, if any, of
        (a) the Carrying Value of such property as of such date (prior to any
        adjustment to be made pursuant to Section 5.5(d) as of such date) over
        (b) the fair market value of such property as of such date (as
        determined under Section 5.5(d)).

               "U.S. GAAP" means United States Generally Accepted Accounting
        Principles consistently applied.

               "WITHDRAWAL OPINION OF COUNSEL" has the meaning assigned to such
        term in Section 11.1(b).

               "WORKING CAPITAL BORROWINGS" means borrowings used solely for
        working capital purposes or to pay distribution to Partners made
        pursuant to a credit facility or other arrangement requiring all such
        borrowings thereunder to be reduced to a relatively small amount each
        year for an economically meaningful period of time.

SECTION 1.2   CONSTRUCTION.

        Unless the context requires otherwise: (a) any pronoun used in this
Agreement shall include the corresponding masculine, feminine or neuter forms,
and the singular form of nouns, pronouns and verbs shall include the plural and
vice versa; (b) references to Articles and Sections

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -12-
<Page>

refer to Articles and Sections of this Agreement; and (c) the term "include" or
"includes" means includes, without limitation, and "including" means including,
without limitation.

                                   ARTICLE II
                                  ORGANIZATION

SECTION 2.1    FORMATION.

        The General Partner and the Organizational Limited Partner have
previously formed the Partnership as a limited partnership pursuant to the
provisions of the Delaware Act and hereby amend and restate the First Amended
Agreement in its entirety. This second amendment and restatement shall become
effective on the date of this Agreement. Except as expressly provided to the
contrary in this Agreement, the rights, duties (including fiduciary duties),
liabilities and obligations of the Partners and the administration, dissolution
and termination of the Partnership shall be governed by the Delaware Act. All
Partnership Interests shall constitute personal property of the owner thereof
for all purposes and a Partner has no interest in specific Partnership property.

SECTION 2.2    NAME.

        The name of the Partnership shall be "SHAMROCK LOGISTICS OPERATIONS,
L.P." The Partnership's business may be conducted under any other name or names
deemed necessary or appropriate by the General Partner in its sole discretion,
including the name of the General Partner. The words "Limited Partnership,"
"L.P." or "Ltd." or similar words or letters shall be included in the
Partnership's name where necessary for the purpose of complying with the laws of
any jurisdiction that so requires. The General Partner in its discretion may
change the name of the Partnership at any time and from time to time and shall
notify the Limited Partners of such change in the next regular communication to
the Limited Partners.

SECTION 2.3    REGISTERED OFFICE; REGISTERED AGENT; PRINCIPAL OFFICE; OTHER
OFFICES.

        Unless and until changed by the General Partner, the registered office
of the Partnership in the State of Delaware shall be located at 1209 Orange
Street, Wilmington, Delaware 19801, and the registered agent for service of
process on the Partnership in the State of Delaware at such registered office
shall be The Corporation Trust Company. The principal office of the Partnership
shall be located at 6000 North Loop 1604 West, San Antonio, Texas 78249 or such
other place as the General Partner may from time to time designate by notice to
the Limited Partners. The Partnership may maintain offices at such other place
or places within or outside the State of Delaware as the General Partner deems
necessary or appropriate. The address of the General Partner shall be 6000 North
Loop 1604 West, San Antonio, Texas 78249 or such other place as the General
Partner may from time to time designate by notice to the Limited Partners.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -13-
<Page>

SECTION 2.4    PURPOSE AND BUSINESS.

        The purpose and nature of the business to be conducted by the
Partnership shall be to (a) acquire, manage, operate, lease, sell and otherwise
deal with the assets or properties contributed to the Partnership by the
Partners or hereafter acquired by the Partnership, (b) serve as a non-managing
member of Skelly-Belvieu Pipeline Company, LLC ("SKELLEY-BELVIEU"), a Delaware
limited liability company, and, in connection therewith, to exercise all the
rights and powers conferred upon the Partnership as a non-managing member of
Skelley-Belvieu pursuant to the Skelly-Belvieu Agreement, (c) engage directly
in, or enter into or form any corporation, partnership, joint venture, limited
liability company or other arrangement to engage indirectly in any type of
business or activity engaged in by Skelly-Belvieu and its Subsidiaries prior to
the Closing Date and, in connection therewith, to exercise all of the rights and
powers conferred upon the Partnership pursuant to the agreements relating to
such business activity, (d) engage directly in, or enter into or form any
corporation, partnership, joint venture, limited liability company or other
arrangement to engage indirectly in, any business activity that is approved by
the General Partner and which lawfully may be conducted by a limited partnership
organized pursuant to the Delaware Act and, in connection therewith, to exercise
all of the rights and powers conferred upon the Partnership pursuant to the
agreements relating to such business activity, and (e) do anything necessary or
appropriate to the foregoing, including the making of capital contributions or
loans to a Group Member, the MLP or any Subsidiary of the MLP; PROVIDED,
HOWEVER, in the case of (c) and (d) above, that the General Partner reasonably
determines, as of the date of the acquisition or commencement of such activity,
that such activity (i) generates "QUALIFYING INCOME" (as such term is defined
pursuant to Section 7704 of the Code) or (ii) enhances the operations of an
activity of the Partnership that generates qualifying income. The General
Partner has no obligation or duty to the Partnership, the Limited Partners, or
the Assignees to propose or approve, and in its discretion may decline to
propose or approve, the conduct by the Partnership of any business.

SECTION 2.5    POWERS.

        The Partnership shall be empowered to do any and all acts and things
necessary, appropriate, proper, advisable, incidental to or convenient for the
furtherance and accomplishment of the purposes and business described in Section
2.4 and for the protection and benefit of the Partnership.

SECTION 2.6    POWER OF ATTORNEY.

               (a)    Each Partner and each Assignee hereby constitutes and
appoints the General Partner and, if a Liquidator shall have been selected
pursuant to Section 12.3, the Liquidator (and any successor to the Liquidator by
merger, transfer, assignment, election or otherwise) and each of their
authorized officers and attorneys-in-fact, as the case may be, with full power
of substitution, as its true and lawful agent and attorney-in-fact, with full
power and authority in his name, place and stead, to:

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -14-
<Page>

               (i)    execute, swear to, acknowledge, deliver, file and record
        in the appropriate public offices (A) all certificates, documents and
        other instruments (including this Agreement and the Certificate of
        Limited Partnership and all amendments or restatements hereof or
        thereof) that the General Partner or the Liquidator deems necessary or
        appropriate to form, qualify or continue the existence or qualification
        of the Partnership as a limited partnership (or a partnership in which
        the limited partners have limited liability) in the State of Delaware
        and in all other jurisdictions in which the Partnership may conduct
        business or own property; (B) all certificates, documents and other
        instruments that the General Partner or the Liquidator deems necessary
        or appropriate to reflect, in accordance with its terms, any amendment,
        change, modification or restatement of this Agreement; (C) all
        certificates, documents and other instruments (including conveyances and
        a certificate of cancellation) that the General Partner or the
        Liquidator deems necessary or appropriate to reflect the dissolution and
        liquidation of the Partnership pursuant to the terms of this Agreement;
        (D) all certificates, documents and other instruments relating to the
        admission, withdrawal, removal or substitution of any Partner pursuant
        to, or other events described in, Article IV, X, XI or XII; (E) all
        certificates, documents and other instruments relating to the
        determination of the rights, preferences and privileges of any class or
        series of Partnership Interests issued pursuant hereto; and (F) all
        certificates, documents and other instruments (including agreements and
        a certificate of merger) relating to a merger or consolidation of the
        Partnership pursuant to Article XIV; and

               (ii)   execute, swear to, acknowledge, deliver, file and record
        all ballots, consents, approvals, waivers, certificates, documents and
        other instruments necessary or appropriate, in the discretion of the
        General Partner or the Liquidator, to make, evidence, give, confirm or
        ratify any vote, consent, approval, agreement or other action that is
        made or given by the Partners hereunder or is consistent with the terms
        of this Agreement or is necessary or appropriate, in the discretion of
        the General Partner or the Liquidator, to effectuate the terms or intent
        of this Agreement; PROVIDED, that when required by any provision of this
        Agreement that establishes a percentage of the Limited Partners or of
        the Limited Partners of any class or series required to take any action,
        the General Partner and the Liquidator may exercise the power of
        attorney made in this Section 2.6(a)(ii) only after the necessary vote,
        consent or approval of the Limited Partners or of the Limited Partners
        of such class or series, as applicable.

        Nothing contained in this Section 2.6(a) shall be construed as
authorizing the General Partner to amend this Agreement except in accordance
with Article XIII or as may be otherwise expressly provided for in this
Agreement.

               (b)    The foregoing power of attorney is hereby declared to be
irrevocable and a power coupled with an interest, and it shall survive and, to
the maximum extent permitted by law, not be affected by the subsequent death,
incompetency, disability, incapacity, dissolution,

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -15-
<Page>

bankruptcy or termination of any Limited Partner or Assignee and the transfer of
all or any portion of such Limited Partner's or Assignee's Partnership Interest
and shall extend to such Limited Partner's or Assignee's successors and assigns.
Each such Limited Partner or Assignee hereby agrees to be bound by any
representation made by the General Partner or the Liquidator acting in good
faith pursuant to such power of attorney; and each such Limited Partner or
Assignee, to the maximum extent permitted by law, hereby waives any and all
defenses that may be available to contest, negate or disaffirm the action of the
General Partner or the Liquidator taken in good faith under such power of
attorney. Each Limited Partner or Assignee shall execute and deliver to the
General Partner or the Liquidator, within 15 days after receipt of the request
therefor, such further designation, powers of attorney and other instruments as
the General Partner or the Liquidator deems necessary to effectuate this
Agreement and the purposes of the Partnership.

SECTION 2.7    TERM.

        The term of the Partnership commenced upon the filing of the Certificate
of Limited Partnership in accordance with the Delaware Act and shall have a
perpetual existence unless dissolved in accordance with the provisions of
Article XII. The existence of the Partnership as a separate legal entity shall
continue until the cancellation of the Certificate of Limited Partnership as
provided in the Delaware Act.

SECTION 2.8    TITLE TO PARTNERSHIP ASSETS.

        Title to Partnership assets, whether real, personal or mixed and whether
tangible or intangible, shall be deemed to be owned by the Partnership as an
entity, and no Partner or Assignee, individually or collectively, shall have any
ownership interest in such Partnership assets or any portion thereof. Title to
any or all of the Partnership assets may be held in the name of the Partnership,
the General Partner, one or more of its Affiliates or one or more nominees, as
the General Partner may determine. The General Partner hereby declares and
warrants that any Partnership assets for which record title is held in the name
of the General Partner or one or more of its Affiliates or one or more nominees
shall be held by the General Partner or such Affiliate or nominee for the use
and benefit of the Partnership in accordance with the provisions of this
Agreement; PROVIDED, HOWEVER, that the General Partner shall use reasonable
efforts to cause record title to such assets (other than those assets in respect
of which the General Partner determines that the expense and difficulty of
conveyancing makes transfer of record title to the Partnership impracticable) to
be vested in the Partnership as soon as reasonably practicable; PROVIDED,
FURTHER, that, prior to the withdrawal or removal of the General Partner or as
soon thereafter as practicable, the General Partner shall use reasonable efforts
to effect the transfer of record title to the Partnership and, prior to any such
transfer, will provide for the use of such assets in a manner satisfactory to
the General Partner. All Partnership assets shall be recorded as the property of
the Partnership in its books and records, irrespective of the name in which
record title to such Partnership assets is held.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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                                   ARTICLE III
                           RIGHTS OF LIMITED PARTNERS

SECTION 3.1    LIMITATION OF LIABILITY.

        The Limited Partners and the Assignees shall have no liability under
this Agreement except as expressly provided in this Agreement or in the Delaware
Act.

SECTION 3.2    MANAGEMENT OF BUSINESS.

        No Limited Partner or Assignee, in its capacity as such, shall
participate in the operation, management or control (within the meaning of the
Delaware Act) of the Partnership's business, transact any business in the
Partnership's name or have the power to sign documents for or otherwise bind the
Partnership. Any action taken by any Affiliate of the General Partner or any
officer, director, employee, member, general partner, agent or trustee of the
General Partner or any of its Affiliates, or any officer, director, employee,
member, general partner, agent or trustee of a Group Member, in its capacity as
such, shall not be deemed to be participation in the control of the business of
the Partnership by a limited partner of the Partnership (within the meaning of
Section 17-303(a) of the Delaware Act) and shall not affect, impair or eliminate
the limitations on the liability of the Limited Partners or Assignees under this
Agreement.

SECTION 3.3    OUTSIDE ACTIVITIES OF THE LIMITED PARTNERS.

        Subject to the provisions of Section 7.5 and the Omnibus Agreement,
which shall continue to be applicable to the Persons referred to therein,
regardless of whether such Persons shall also be Limited Partners or Assignees,
any Limited Partner or Assignee shall be entitled to and may have business
interests and engage in business activities in addition to those relating to the
Partnership, including business interests and activities in direct competition
with the Partnership Group. Neither the Partnership nor any of the other
Partners or Assignees shall have any rights by virtue of this Agreement in any
business ventures of any Limited Partner or Assignee.

SECTION 3.4    RIGHTS OF LIMITED PARTNERS.

               (a)    In addition to other rights provided by this Agreement or
by applicable law, and except as limited by Section 3.4(b), each Limited Partner
shall have the right, for a purpose reasonably related to such Limited Partner's
interest as a limited partner in the Partnership, upon reasonable written demand
and at such Limited Partner's own expense:

               (i)    to obtain true and full information regarding the status
        of the business and financial condition of the Partnership;

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -17-
<Page>

               (ii)   promptly after becoming available, to obtain a copy of the
        Partnership's federal, state and local income tax returns for each year;

               (iii)  to have furnished to him a current list of the name and
        last known business, residence or mailing address of each Partner;

               (iv)   to have furnished to him a copy of this Agreement and the
        Certificate of Limited Partnership and all amendments thereto, together
        with a copy of the executed copies of all powers of attorney pursuant to
        which this Agreement, the Certificate of Limited Partnership and all
        amendments thereto have been executed;

               (v)    to obtain true and full information regarding the amount
        of cash and a description and statement of the Net Agreed Value of any
        other Capital Contribution by each Partner and which each Partner has
        agreed to contribute in the future, and the date on which each became a
        Partner; and

               (vi)   to obtain such other information regarding the affairs of
        the Partnership as is just and reasonable.

               (b)    The General Partner may keep confidential from the Limited
Partners and Assignees, for such period of time as the General Partner deems
reasonable, (i) any information that the General Partner reasonably believes to
be in the nature of trade secrets or (ii) other information the disclosure of
which the General Partner in good faith believes (A) is not in the best
interests of the MLP or the Partnership Group, (B) could damage the MLP or the
Partnership Group or (C) that any Group Member is required by law or by
agreement with any third party to keep confidential (other than agreements with
Affiliates of the Partnership the primary purpose of which is to circumvent the
obligations set forth in this Section 3.4).

                                   ARTICLE IV
                       TRANSFERS OF PARTNERSHIP INTERESTS

SECTION 4.1    TRANSFER GENERALLY.

               (a)    The term "transfer," when used in this Agreement with
respect to a Partnership Interest, shall be deemed to refer to a transaction by
which the General Partner assigns its General Partner Interest to another Person
who becomes the General Partner (or an Assignee) or by which the holder of a
Limited Partner Interest assigns such Limited Partner Interest to another Person
who becomes a Limited Partner (or an Assignee), and includes a sale, assignment,
gift, pledge, encumbrance, hypothecation, mortgage, exchange or any other
disposition by law or otherwise.

               (b)    No Partnership Interest shall be transferred, in whole or
in part, except in accordance with the terms and conditions set forth in this
Article IV. Any transfer or purported

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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<Page>

transfer of a Partnership Interest not made in accordance with this Article IV
shall be null and void.

               (c)    Nothing contained in this Agreement shall be construed to
prevent (i) a disposition by any limited partner of the General Partner of any
or all of the issued and outstanding limited partner interests of the General
Partner or (ii) a disposition by any general partner of the General Partner of
any or all of the issued and outstanding capital stock or other equity interests
of such general partner.

SECTION 4.2    TRANSFER OF GENERAL PARTNER'S PARTNERSHIP INTEREST.

               If a General Partner transfers its interest as a general partner
of the MLP to any Person in accordance with the provisions of the MLP Agreement,
such General Partner shall contemporaneously therewith transfer all, but not
less than all, of its General Partner Interest herein to such Person, and the
Limited Partners and Assignees, if any, hereby expressly consent to such
transfer. Except as set forth in the immediately preceding sentence and in
Section 5.2, a General Partner may not transfer all or any part of its
Partnership Interest as a General Partner.

SECTION 4.3    TRANSFER OF A LIMITED PARTNER'S PARTNERSHIP INTEREST.

               A Limited Partner may transfer all, but not less than all, of its
Partnership Interest as a Limited Partner in connection with the merger,
consolidation or other combination of such Limited Partner with or into any
other Person or the transfer by such Limited Partner of all or substantially all
of its assets to another Person, and following any such transfer such Person may
become a Substituted Limited Partner pursuant to Article X. Except as set forth
in the immediately preceding sentence and in Section 5.2, or in connection with
any pledge of (or any related foreclosure on) a Partnership Interest as a
Limited Partner solely for the purpose of securing, directly or indirectly,
indebtedness of the Partnership or the MLP, and except for the transfers
contemplated by Sections 5.2 and 10.2, a Limited Partner may not transfer all or
any part of its Partnership Interest or withdraw from the Partnership.

SECTION 4.4    RESTRICTIONS ON TRANSFERS.

               (a)    Notwithstanding the other provisions of this Article
IV, no transfer of any Partnership Interest shall be made if such transfer
would (i) violate the then applicable federal or state securities laws or
rules and regulations of the Commission, any state securities commission or
any other governmental authority with jurisdiction over such transfer, (ii)
terminate the existence or qualification of the Partnership or the MLP under
the laws of the jurisdiction of its formation or (iii) cause the Partnership
or the MLP to be treated as an association taxable as a corporation or
otherwise to be taxed as an entity for federal income tax purposes (to the
extent not already so treated or taxed).

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

                                      -19-
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               (b)    The General Partner may impose restrictions on the
transfer of Partnership Interests if a subsequent Opinion of Counsel determines
that such restrictions are necessary to avoid a significant risk of the
Partnership or the MLP becoming taxable as a corporation or otherwise to be
taxed as an entity for federal income tax purposes. The restrictions may be
imposed by making such amendments to this Agreement as the General Partner may
determine to be necessary or appropriate to impose such restrictions.

                                    ARTICLE V
           CAPITAL CONTRIBUTIONS AND ISSUANCE OF PARTNERSHIP INTERESTS

SECTION 5.1    INITIAL CONTRIBUTIONS.

        In connection with the formation of the Partnership under the Delaware
Act, Shamrock GP, the former general partner, made an initial Capital
Contribution to the Partnership in the amount of $10.00, for an interest in the
Partnership and was admitted as the General Partner of the Partnership, and the
Organizational Limited Partner made an initial Capital Contribution to the
Partnership in the amount of $990.00 for an interest in the Partnership and has
been admitted as a Limited Partner of the Partnership. On August 10, 2000, the
Certificate of Limited Partnership of the Partnership was amended to reflect the
substitution of the General Partner as general partner of the Partnership and
the withdrawal of Shamrock GP. As of the Closing Date, the interest of the
Organizational Limited Partner shall be redeemed as provided in the Contribution
Agreement; the initial Capital Contributions of each Partner shall thereupon be
refunded; and the Organizational Limited Partner shall cease to be a Limited
Partner of the Partnership. Ninety-nine percent of any interest or other profit
that may have resulted from the investment or other use of such initial Capital
Contributions shall be allocated and distributed to the Organizational Limited
Partner, and the balance thereof shall be allocated and distributed to the
General Partner.

SECTION 5.2    CONTRIBUTIONS PURSUANT TO THE CONTRIBUTION AGREEMENT.

               (a)    On the Closing Date and pursuant to the Contribution
Agreement, DSRMC will contribute a portion of its limited partner interests in
the Partnership to the General Partner sufficient to result in the General
Partner owning a 1.0101% interest in the Partnership and 1% interest in the MLP.
Such transfers will be accomplished by DSRMC transferring as capital
contributions (1) such limited partner interests in the Partnership to Shamrock
GP as are necessary so that Shamrock GP will have a 0.1% interest in the General
Partner and (2) such limited partner interests in the Partnership to UDS
Logistics, LLC, a Delaware limited liability company ("UDS LOGISTICS") as are
necessary so that UDS Logistics will have a 99.99% interest in the General
Partner.

               (b)    On the Closing Date and pursuant to the Contribution
Agreement, Shamrock GP and UDS Logistics will contribute limited partner
interests in the Partnership to the General Partner as capital contributions.
Such limited partner interests owned by the General

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Partner will be converted to general partner interests so that the General
Partner has a 1.0101% general partner interest in the Partnership.

               (c)    On the Closing Date and pursuant to the Contribution
Agreement, DSRMC and Sigmor Corporation will contribute limited partner
interests in the Partnership to UDS Logistics in exchange for member interests.

               (d)    On the Closing Date and pursuant to the Contribution
Agreement, the General Partner will contribute limited partner interests in the
Partnership to the MLP in exchange for a 1% general partner interest in the MLP.

               (e)    On the Closing Date and pursuant to the Contribution
Agreement, UDS Logistics will contribute limited partner interests in the
Partnership to the MLP in exchange for Common Units and Subordinated Units.

               (f)    On the Closing Date and pursuant to the Contribution
Agreement, the Partnership will borrow new third party debt ("NEW DEBT"). As a
result of the preceding transactions, the General Partner will then have a
1.0101% general partner interest in the Partnership and Shamrock GP will then
have a 0.1% general partner interest in the General Partner.

               (g)    On the Closing Date and pursuant to the Contribution
Agreement, the MLP shall offer Common Units to the public in the Initial
Offering.

               (h)    On the Closing Date and pursuant to the Contribution
Agreement, the MLP will contribute the cash received from the Initial Offering
of Common Units as described in (g) above, to the Partnership in exchange for a
Limited Partner Interest.

               (i)    On the Closing Date and pursuant to the Contribution
Agreement, the Partnership will (a) pay certain expenses related to the
transactions described in the Registration Statement, (b) repay working capital
loan, (c) reimburse the General Partner and others for capital expenditures and
(d) pay qualified debt assumed by the Partnership in certain of the mergers and
asset conveyances, as described in the Registration Statement.

               (j)    Following the foregoing transactions, the General Partner
shall hold a 1.0101% Partnership Interest as General Partner, and the MLP shall
hold a 98.9899% Partnership Interest as a Limited Partner.

SECTION 5.3    ADDITIONAL CAPITAL CONTRIBUTIONS.

        With the consent of the General Partner, any Limited Partner may, but
shall not be obligated to, make additional Capital Contributions to the
Partnership. Contemporaneously with the making of any Capital Contributions by a
Limited Partner, in addition to those provided in

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Sections 5.1 and 5.2, the General Partner shall be obligated to make an
additional Capital Contribution to the Partnership in an amounts equal to 1.0101
divided by 98.9899 times the amount of the additional Capital Contribution then
made by such Limited Partner. Except as set forth in the immediately preceding
sentence and in Article XII, the General Partner shall not be obligated to make
any additional Capital Contributions to the Partnership.

SECTION 5.4    INTEREST AND WITHDRAWAL.

        No interest shall be paid by the Partnership on Capital Contributions.
No Partner or Assignee shall be entitled to the withdrawal or return of its
Capital Contribution, except to the extent, if any, that distributions made
pursuant to this Agreement or upon termination of the Partnership may be
considered as such by law and then only to the extent provided for in this
Agreement. Except to the extent expressly provided in this Agreement, no Partner
or Assignee shall have priority over any other Partner or Assignee either as to
the return of Capital Contributions or as to profits, losses or distributions.
Any such return shall be a compromise to which all Partners and Assignees agree
within the meaning of Section 17-502(b) of the Delaware Act.

SECTION 5.5    CAPITAL ACCOUNTS.

               (a)    The Partnership shall maintain for each Partner (or a
beneficial owner of Partnership Interests held by a nominee in any case in which
the nominee has furnished the identity of such owner to the Partnership in
accordance with Section 6031(c) of the Code or any other method acceptable to
the General Partner in its sole discretion) owning a Partnership Interest a
separate Capital Account with respect to such Partnership Interest in accordance
with the rules of Treasury Regulation Section 1.704-1(b)(2)(iv). Such Capital
Account shall be increased by (i) the amount of all Capital Contributions made
to the Partnership with respect to such Partnership Interest pursuant to this
Agreement and (ii) all items of Partnership income and gain (including, without
limitation, income and gain exempt from tax) computed in accordance with Section
5.5(b) and allocated with respect to such Partnership Interest pursuant to
Section 6.1, and decreased by (x) the amount of cash or Net Agreed Value of all
actual and deemed distributions of cash or property made with respect to such
Partnership Interest pursuant to this Agreement and (y) all items of Partnership
deduction and loss computed in accordance with Section 5.5(b) and allocated with
respect to such Partnership Interest pursuant to Section 6.1.

               (b)    For purposes of computing the amount of any item of
income, gain, loss or deduction which is to be allocated pursuant to Article VI
and is to be reflected in the Partners' Capital Accounts, the determination,
recognition and classification of any such item shall be the same as its
determination, recognition and classification for federal income tax purposes
(including, without limitation, any method of depreciation, cost recovery or
amortization used for that purpose), provided, that:

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               (i)    Solely for purposes of this Section 5.5, the Partnership
        shall be treated as owning directly its proportionate share (as
        determined by the General Partner) of all property owned by any
        Subsidiary of the Partnership that is classified as a partnership for
        federal income tax purposes.

               (ii)   All fees and other expenses incurred by the Partnership to
        promote the sale of (or to sell) a Partnership Interest that can neither
        be deducted nor amortized under Section 709 of the Code, if any, shall,
        for purposes of Capital Account maintenance, be treated as an item of
        deduction at the time such fees and other expenses are incurred and
        shall be allocated among the Partners pursuant to Section 6.1.

               (iii)  Except as otherwise provided in Treasury Regulation
        Section 1.704-1(b)(2)(iv)(m), computation of all items of income, gain,
        loss and deduction shall be made without regard to any election under
        Section 754 of the Code which may be made by the Partnership and, as to
        those items described in Section 705(a)(1)(B) or 705(a)(2)(B) of the
        Code, without regard to the fact that such items are not includable in
        gross income or are neither currently deductible nor capitalized for
        federal income tax purposes. To the extent an adjustment to the adjusted
        tax basis of any Partnership asset pursuant to Section 734(b) or 743(b)
        of the Code is required, pursuant to Treasury Regulation Section
        1.704-1(b)(2)(iv)(m), to be taken into account in determining Capital
        Accounts, the amount of such adjustment in the Capital Accounts shall be
        treated as an item of gain or loss.

               (iv)   Any income, gain or loss attributable to the taxable
        disposition of any Partnership property shall be determined as if the
        adjusted basis of such property as of such date of disposition were
        equal in amount to the Partnership's Carrying Value with respect to such
        property as of such date.

               (v)    In accordance with the requirements of Section 704(b) of
        the Code, any deductions for depreciation, cost recovery or amortization
        attributable to any Contributed Property shall be determined as if the
        adjusted basis of such property on the date it was acquired by the
        Partnership were equal to the Agreed Value of such property. Upon an
        adjustment pursuant to Section 5.5(d) to the Carrying Value of any
        Partnership property subject to depreciation, cost recovery or
        amortization, any further deductions for such depreciation, cost
        recovery or amortization attributable to such property shall be
        determined (A) as if the adjusted basis of such property were equal to
        the Carrying Value of such property immediately following such
        adjustment and (B) using a rate of depreciation, cost recovery or
        amortization derived from the same method and useful life (or, if
        applicable, the remaining useful life) as is applied for federal income
        tax purposes; PROVIDED, HOWEVER, that, if the asset has a zero adjusted
        basis for federal income tax purposes, depreciation, cost recovery or
        amortization deductions shall be determined using any reasonable method
        that the General Partner may adopt.

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               (vi)   If the Partnership's adjusted basis in a depreciable or
        cost recovery property is reduced for federal income tax purposes
        pursuant to Section 48(q)(1) or 48(q)(3) of the Code, the amount of such
        reduction shall, solely for purposes hereof, be deemed to be an
        additional depreciation or cost recovery deduction in the year such
        property is placed in service and shall be allocated among the Partners
        pursuant to Section 6.1. Any restoration of such basis pursuant to
        Section 48(q)(2) of the Code shall, to the extent possible, be allocated
        in the same manner to the Partners to whom such deemed deduction was
        allocated.

               (c)    A transferee of a Partnership Interest shall succeed to a
pro rata portion of the Capital Account of the transferor relating to the
Partnership Interest so transferred.

               (d)    (i)  In accordance with Treasury Regulation Section
        1.704-1(b)(2)(iv)(f), on an issuance of additional Partnership Interests
        for cash or Contributed Property or the conversion of the General
        Partner's Partnership Interest to Common Units pursuant to Section
        11.3(a), the Capital Accounts of all Partners and the Carrying Value of
        each Partnership property immediately prior to such issuance shall be
        adjusted upward or downward to reflect any Unrealized Gain or Unrealized
        Loss attributable to such Partnership property, as if such Unrealized
        Gain or Unrealized Loss had been recognized on an actual sale of each
        such property immediately prior to such issuance and had been allocated
        to the Partners at such time pursuant to Section 6.1(c) in the same
        manner as any item of gain or loss actually recognized during such
        period would have been allocated. In determining such Unrealized Gain or
        Unrealized Loss, the aggregate cash amount and fair market value of all
        Partnership assets (including, without limitation, cash or cash
        equivalents) immediately prior to the issuance of additional Partnership
        Interests shall be determined by the General Partner using such
        reasonable method of valuation as it may adopt; PROVIDED, HOWEVER, that
        the General Partner, in arriving at such valuation, must take fully into
        account the fair market value of the Partnership Interests of all
        Partners at such time. The General Partner shall allocate such aggregate
        value among the assets of the Partnership (in such manner as it
        determines in its discretion to be reasonable) to arrive at a fair
        market value for individual properties.

                      (ii) In accordance with Treasury Regulation Section
        1.704-1(b)(2)(iv)(f), immediately prior to any actual or deemed
        distribution to a Partner of any Partnership property (other than a
        distribution of cash that is not in redemption or retirement of a
        Partnership Interest), the Capital Accounts of all Partners and the
        Carrying Value of all Partnership property shall be adjusted upward or
        downward to reflect any Unrealized Gain or Unrealized Loss attributable
        to such Partnership property, as if such Unrealized Gain or Unrealized
        Loss had been recognized in a sale of such property immediately prior to
        such distribution for an amount equal to its fair market value, and had
        been allocated to the Partners, at such time, pursuant to Section 6.1(c)
        in the same manner as any item of gain or loss actually recognized
        during such period would have been allocated. In determining such
        Unrealized Gain or Unrealized Loss the aggregate

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        cash amount and fair market value of all Partnership assets (including,
        without limitation, cash or cash equivalents) immediately prior to a
        distribution shall (A) in the case of an actual distribution which is
        not made pursuant to Section 12.4 or in the case of a deemed
        distribution, be determined and allocated in the same manner as that
        provided in Section 5.5(d)(i) or (B) in the case of a liquidating
        distribution pursuant to Section 12.4, be determined and allocated by
        the Liquidator using such reasonable method of valuation as it may
        adopt.

SECTION 5.6    LOANS FROM PARTNERS.

        Loans by a Partner to the Partnership shall not constitute Capital
Contributions. If any Partner shall advance funds to the Partnership in excess
of the amounts required hereunder to be contributed by it to the capital of the
Partnership, the making of such excess advances shall not result in any increase
in the amount of the Capital Account of such Partner. The amount of any such
excess advances shall be a debt obligation of the Partnership to such Partner
and shall be payable or collectible only out of the Partnership assets in
accordance with the terms and conditions upon which such advances are made.


SECTION 5.7    LIMITED PREEMPTIVE RIGHTS.

        Except as provided in Section 5.3, no Person shall have preemptive,
preferential or other similar rights with respect to (a) additional Capital
Contributions; (b) issuance or sale of any class or series of Partnership
Interests, whether unissued, held in the treasury or hereafter created; (c)
issuance of any obligations, evidences of indebtedness or other securities of
the Partnership convertible into or exchangeable for, or carrying or accompanied
by any rights to receive, purchase or subscribe to, any such Partnership
Interests; (d) issuance of any right of subscription to or right to receive, or
any warrant or option for the purchase of, any such Partnership Interests; or
(e) issuance or sale of any other securities that may be issued or sold by the
Partnership.

SECTION 5.8    FULLY PAID AND NON-ASSESSABLE NATURE OF PARTNERSHIP INTERESTS.

        All Partnership Interests issued to Limited Partners pursuant to, and in
accordance with the requirements of, this Article V shall be fully paid and
non-assessable Partnership Interests, except as such non-assessability may be
affected by Section 17-607 of the Delaware Act.

                                   ARTICLE VI
                          ALLOCATIONS AND DISTRIBUTIONS

SECTION 6.1    ALLOCATIONS FOR CAPITAL ACCOUNT PURPOSES.

        For purposes of maintaining the Capital Accounts and in determining the
rights of the Partners among themselves, the Partnership's items of income,
gain, loss and deduction

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(computed in accordance with Section 5.5(b)) shall be allocated among the
Partners in each taxable year (or portion thereof) as provided herein below.

               (a)    NET INCOME. After giving effect to the special allocations
set forth in Section 6.1(d), Net Income for each taxable year and all items of
income, gain, loss and deduction taken into account in computing Net Income for
such taxable year shall be allocated among the Partners as follows:

               (i)    First, 100% to the General Partner until the aggregate Net
        Income allocated to the General Partner pursuant to this Section
        6.1(a)(i) for the current taxable year and all previous taxable years is
        equal to the aggregate Net Losses allocated to the General Partner
        pursuant to Section 6.1(b)(ii) for all previous taxable years;

               (ii)   Second, 1.0101% to the General Partner and 98.9899% to the
        Limited Partners, in proportion to their respective Percentage
        Interests.

               (b)    NET LOSSES. After giving effect to the special allocations
set forth in Section 6.1(d), Net Losses for each taxable period and all items of
income, gain, loss and deduction taken into account in computing Net Losses for
such taxable period shall be allocated among the Partners as follows:

               (i)    First, 1.0101% to the General Partner and 98.9899% to the
        Limited Partners, in accordance with their respective Percentage
        Interests; PROVIDED, HOWEVER, that Net Losses shall not be allocated to
        a Limited Partner pursuant to this Section 6.1(b)(i) to the extent that
        such allocation would cause a Limited Partner to have a deficit balance
        in its Adjusted Capital Account at the end of such taxable year (or
        increase any existing deficit balance in such Limited Partners's
        Adjusted Capital Account);

               (ii)   Second, the balance, if any, 100% to the General Partner.

               (c)    NET TERMINATION GAINS AND LOSSES. After giving effect to
the special allocations set forth in Section 6.1(d), all items of income, gain,
loss and deduction taken into account in computing Net Termination Gain or Net
Termination Loss for such taxable period shall be allocated in the same manner
as such Net Termination Gain or Net Termination Loss is allocated hereunder. All
allocations under this Section 6.1(c) shall be made after Capital Account
balances have been adjusted by all other allocations provided under this Section
6.1 and after all distributions of Available Cash provided under Section 6.4
have been made with respect to the taxable period ending on or before the
Liquidation Date; PROVIDED, HOWEVER, that solely for purposes of this Section
6.1(c), Capital Accounts shall not be adjusted for distributions made pursuant
to Section 12.4.

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                      (i)  If a Net Termination Gain is recognized (or deemed
        recognized pursuant to Section 5.5(d)), such Net Termination Gain shall
        be allocated among the Partners in the following manner (and the Capital
        Accounts of the Partners shall be increased by the amount so allocated
        in each of the following subclauses, in the order listed, before an
        allocation is made pursuant to the next succeeding subclause):

                      (A)  First, to each Partner having a deficit balance in
               its Capital Account, in the proportion that such deficit balance
               bears to the total deficit balances in the Capital Accounts of
               all Partners, until each such Partner has been allocated Net
               Termination Gain equal to any such deficit balance in its Capital
               Account; and

                      (B)  Second, 1.0101% to the General Partner and 98.9899%
               to the Limited Partners, in proportion to their respective
               Percentage Interests.

                      (ii) If a Net Termination Loss is recognized (or deemed
        recognized pursuant to Section 5.5(d)), such Net Termination Loss shall
        be allocated among the Partners in the following manner:

                      (A)  First, to the General Partner and the Limited
               Partners in proportion to, and to the extent of, the positive
               balances in their respective Capital Accounts; and

                      (B)  Second, the balance, if any, 100% to the General
               Partner.

               (d)    SPECIAL ALLOCATIONS. Notwithstanding any other provision
of this Section 6.1, the following special allocations shall be made for such
taxable period:

               (i)    PARTNERSHIP MINIMUM GAIN CHARGEBACK. Notwithstanding any
        other provision of this Section 6.1, if there is a net decrease in
        Partnership Minimum Gain during any Partnership taxable period, each
        Partner shall be allocated items of Partnership income and gain for such
        period (and, if necessary, subsequent periods) in the manner and amounts
        provided in Treasury Regulation Sections 1.704-2(f)(6), 1.704-2(g)(2)
        and 1.704-2(j)(2)(i), or any successor provision. For purposes of this
        Section 6.1(d), each Partner's Adjusted Capital Account balance shall be
        determined, and the allocation of income or gain required hereunder
        shall be effected, prior to the application of any other allocations
        pursuant to this Section 6.1(d) with respect to such taxable period
        (other than an allocation pursuant to Sections 6.1(d)(v) and
        6.1(d)(vi)). This Section 6.1(d)(i) is intended to comply with the
        Partnership Minimum Gain chargeback requirement in Treasury Regulation
        Section 1.704-2(f) and shall be interpreted consistently therewith.

               (ii)   CHARGEBACK OF PARTNER NONRECOURSE DEBT MINIMUM GAIN.
        Notwithstanding the other provisions of this Section 6.1 (other than
        Section 6.1(d)(i)),

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        except as provided in Treasury Regulation Section 1.704-2(i)(4), if
        there is a net decrease in Partner Nonrecourse Debt Minimum Gain during
        any Partnership taxable period, any Partner with a share of Partner
        Nonrecourse Debt Minimum Gain at the beginning of such taxable period
        shall be allocated items of Partnership income and gain for such period
        (and, if necessary, subsequent periods) in the manner and amounts
        provided in Treasury Regulation Sections 1.704-2(i)(4) and
        1.704-2(j)(2)(ii), or any successor provisions. For purposes of this
        Section 6.1(d), each Partner's Adjusted Capital Account balance shall be
        determined, and the allocation of income or gain required hereunder
        shall be effected, prior to the application of any other allocations
        pursuant to this Section 6.1(d), other than Section 6.1(d)(i) and other
        than an allocation pursuant to Sections 6.1(d)(v) and 6.1(d)(vi), with
        respect to such taxable period. This Section 6.1(d)(ii) is intended to
        comply with the chargeback of items of income and gain requirement in
        Treasury Regulation Section 1.704-2(i)(4) and shall be interpreted
        consistently therewith.

               (iii)  QUALIFIED INCOME OFFSET. In the event any Partner
        unexpectedly receives any adjustments, allocations or distributions
        described in Treasury Regulation Sections 1.704-1(b)(2)(ii)(d)(4),
        1.704-1(b)(2)(ii)(d)(5), or 1.704-1(b)(2)(ii)(d)(6), items of
        Partnership income and gain shall be specially allocated to such Partner
        in an amount and manner sufficient to eliminate, to the extent required
        by the Treasury Regulations promulgated under Section 704(b) of the
        Code, the deficit balance, if any, in its Adjusted Capital Account
        created by such adjustments, allocations or distributions as quickly as
        possible unless such deficit balance is otherwise eliminated pursuant to
        Section 6.1(d)(i) or (ii).

               (iv)   GROSS INCOME ALLOCATIONS. In the event any Partner has a
        deficit balance in its Capital Account at the end of any Partnership
        taxable period in excess of the sum of (A) the amount such Partner is
        required to restore pursuant to the provisions of this Agreement and (B)
        the amount such Partner is deemed obligated to restore pursuant to
        Treasury Regulation Sections 1.704-2(g) and 1.704-2(i)(5), such Partner
        shall be specially allocated items of Partnership gross income and gain
        in the amount of such excess as quickly as possible; PROVIDED, that an
        allocation pursuant to this Section 6.1(d)(iv) shall be made only if and
        to the extent that such Partner would have a deficit balance in its
        Capital Account as adjusted after all other allocations provided for in
        this Section 6.1 have been tentatively made as if this Section
        6.1(d)(iv) were not in this Agreement.

               (v)    NONRECOURSE DEDUCTIONS. Nonrecourse Deductions for any
        taxable period shall be allocated to the Partners in accordance with
        their respective Percentage Interests. If the General Partner determines
        in its good faith discretion that the Partnership's Nonrecourse
        Deductions must be allocated in a different ratio to satisfy the safe
        harbor requirements of the Treasury Regulations promulgated under
        Section 704(b) of the Code, the General Partner is authorized, upon
        notice to the other Partners, to revise the prescribed ratio to the
        numerically closest ratio that does satisfy such requirements.

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               (vi)   PARTNER NONRECOURSE DEDUCTIONS. Partner Nonrecourse
        Deductions for any taxable period shall be allocated 100% to the Partner
        that bears the Economic Risk of Loss with respect to the Partner
        Nonrecourse Debt to which such Partner Nonrecourse Deductions are
        attributable in accordance with Treasury Regulation Section 1.704-2(i).
        If more than one Partner bears the Economic Risk of Loss with respect to
        a Partner Nonrecourse Debt, such Partner Nonrecourse Deductions
        attributable thereto shall be allocated between or among such Partners
        in accordance with the ratios in which they share such Economic Risk of
        Loss.

               (vii)  NONRECOURSE LIABILITIES. For purposes of Treasury
        Regulation Section 1.752-3(a)(3), the Partners agree that Nonrecourse
        Liabilities of the Partnership in excess of the sum of (A) the amount of
        Partnership Minimum Gain and (B) the total amount of Nonrecourse
        Built-in Gain shall be allocated among the Partners in accordance with
        their respective Percentage Interests.

               (viii) CODE SECTION 754 ADJUSTMENTS. To the extent an adjustment
        to the adjusted tax basis of any Partnership asset pursuant to Section
        734(b) or 743(c) of the Code is required, pursuant to Treasury
        Regulation Section 1.704-1(b)(2)(iv)(m), to be taken into account in
        determining Capital Accounts, the amount of such adjustment to the
        Capital Accounts shall be treated as an item of gain (if the adjustment
        increases the basis of the asset) or loss (if the adjustment decreases
        such basis), and such item of gain or loss shall be specially allocated
        to the Partners in a manner consistent with the manner in which their
        Capital Accounts are required to be adjusted pursuant to such Section of
        the Treasury Regulations.

               (ix)   CURATIVE ALLOCATION.

                      (A)  Notwithstanding any other provision of this Section
               6.1, other than the Required Allocations, the Required
               Allocations shall be taken into account in making the Agreed
               Allocations so that, to the extent possible, the net amount of
               items of income, gain, loss and deduction allocated to each
               Partner pursuant to the Required Allocations and the Agreed
               Allocations, together, shall be equal to the net amount of such
               items that would have been allocated to each such Partner under
               the Agreed Allocations had the Required Allocations and the
               related Curative Allocation not otherwise been provided in this
               Section 6.1. Notwithstanding the preceding sentence, Required
               Allocations relating to (1) Nonrecourse Deductions shall not be
               taken into account except to the extent that there has been a
               decrease in Partnership Minimum Gain and (2) Partner Nonrecourse
               Deductions shall not be taken into account except to the extent
               that there has been a decrease in Partner Nonrecourse Debt
               Minimum Gain. Allocations pursuant to this Section 6.1(d)(ix)(A)
               shall only be made with respect to Required Allocations to the
               extent the General Partner reasonably determines that such
               allocations will otherwise be inconsistent with the economic
               agreement

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               among the Partners. Further, allocations pursuant to this Section
               6.1(d)(ix)(A) shall be deferred with respect to allocations
               pursuant to clauses (1) and (2) hereof to the extent the General
               Partner reasonably determines that such allocations are likely to
               be offset by subsequent Required Allocations.

                      (B)  The General Partner shall have reasonable
               discretion, with respect to each taxable period, to (1) apply the
               provisions of Section 6.1(d)(ix)(A) in whatever order is most
               likely to minimize the economic distortions that might otherwise
               result from the Required Allocations, and (2) divide all
               allocations pursuant to Section 6.1(d)(ix)(A) among the Partners
               in a manner that is likely to minimize such economic distortions.

SECTION 6.2   ALLOCATIONS FOR TAX PURPOSES.

               (a)    Except as otherwise provided herein, for federal income
tax purposes, each item of income, gain, loss and deduction shall be allocated
among the Partners in the same manner as its correlative item of "book" income,
gain, loss or deduction is allocated pursuant to Section 6.1.

               (b)    In an attempt to eliminate Book-Tax Disparities
attributable to a Contributed Property or Adjusted Property, items of income,
gain, loss, depreciation, amortization and cost recovery deductions shall be
allocated for federal income tax purposes among the Partners as follows:

               (i)    (A)  In the case of a Contributed Property, such items
        attributable thereto shall be allocated among the Partners in the manner
        provided under Section 704(c) of the Code that takes into account the
        variation between the Agreed Value of such property and its adjusted
        basis at the time of contribution; and (B) any item of Residual Gain or
        Residual Loss attributable to a Contributed Property shall be allocated
        among the Partners in the same manner as its correlative item of "book"
        gain or loss is allocated pursuant to Section 6.1.

               (ii)   (A)  In the case of an Adjusted Property, such items shall
        (1) first, be allocated among the Partners in a manner consistent with
        the principles of Section 704(c) of the Code to take into account the
        Unrealized Gain or Unrealized Loss attributable to such property and the
        allocations thereof pursuant to Section 5.5(d)(i) or 5.5(d)(ii), and (2)
        second, in the event such property was originally a Contributed
        Property, be allocated among the Partners in a manner consistent with
        Section 6.2(b)(i)(A); and (B) any item of Residual Gain or Residual Loss
        attributable to an Adjusted Property shall be allocated among the
        Partners in the same manner as its correlative item of "book" gain or
        loss is allocated pursuant to Section 6.1.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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               (iii)  The General Partner shall apply the principles of Treasury
        Regulation Section 1.704-3(d) to eliminate Book-Tax Disparities.

               (c)    For the proper administration of the Partnership and for
the preservation of uniformity of the Units or other limited partner interests
of the MLP (or any class or classes thereof), the General Partner shall have
sole discretion to (i) adopt such conventions as it deems appropriate in
determining the amount of depreciation, amortization and cost recovery
deductions; (ii) make special allocations for federal income tax purposes of
income (including, without limitation, gross income) or deductions; and (iii)
amend the provisions of this Agreement as appropriate (x) to reflect the
proposal or promulgation of Treasury Regulations under Section 704(b) or Section
704(c) of the Code or (y) otherwise to preserve or achieve uniformity of the
Units or other limited partner interests of the MLP (or any class or classes
thereof). The General Partner may adopt such conventions, make such allocations
and make such amendments to this Agreement as provided in this Section 6.2(c)
only if such conventions, allocations or amendments would not have a material
adverse effect on the Partners, the holders of any class or classes of Units or
other limited partner interests of the MLP issued and outstanding or the
Partnership and if such allocations are consistent with the principles of
Section 704 of the Code.

               (d)    The General Partner in its discretion may determine to
depreciate or amortize the portion of an adjustment under Section 743(b) of the
Code attributable to unrealized appreciation in any Adjusted Property (to the
extent of the unamortized Book-Tax Disparity) using a predetermined rate derived
from the depreciation or amortization method and useful life applied to the
Partnership's common basis of such property, despite any inconsistency of such
approach with Treasury Regulation Section 1.167(c)-l(a)(6) or any successor
regulations thereto. If the General Partner determines that such reporting
position cannot reasonably be taken, the General Partner may adopt depreciation
and amortization conventions under which all purchasers acquiring limited
partner interests of the MLP in the same month would receive depreciation and
amortization deductions, based upon the same applicable rate as if they had
purchased a direct interest in the Partnership's property. If the General
Partner chooses not to utilize such aggregate method, the General Partner may
use any other reasonable depreciation and amortization conventions to preserve
the uniformity of the intrinsic tax characteristics of any limited partner
interests of the MLP that would not have a material adverse effect on the
Partners or the holders of any class or classes of limited partner interests of
the MLP.

               (e)    Any gain allocated to the Partners upon the sale or other
taxable disposition of any Partnership asset shall, to the extent possible,
after taking into account other required allocations of gain pursuant to this
Section 6.2, be characterized as Recapture Income in the same proportions and to
the same extent as such Partners (or their predecessors in interest) have been
allocated any deductions directly or indirectly giving rise to the treatment of
such gains as Recapture Income.

               (f)    All items of income, gain, loss, deduction and credit
recognized by the Partnership for federal income tax purposes and allocated to
the Partners in accordance with the

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provisions hereof shall be determined without regard to any election under
Section 754 of the Code which may be made by the Partnership; PROVIDED, HOWEVER,
that such allocations, once made, shall be adjusted as necessary or appropriate
to take into account those adjustments permitted or required by Sections 734 and
743 of the Code.

               (g)    The General Partner may adopt such methods of allocation
of income, gain, loss or deduction between a transferor and a transferee of a
Partnership Interest as it determines necessary, to the extent permitted or
required by Section 706 of the Code and the regulations or rulings promulgated
thereunder.

               (h)    Allocations that would otherwise be made to a Partner
under the provisions of this Article VI shall instead be made to the beneficial
owner of Partnership Interests held by a nominee in any case in which the
nominee has furnished the identity of such owner to the Partnership in
accordance with Section 6031(c) of the Code or any other method acceptable to
the General Partner in its sole discretion.

SECTION 6.3   DISTRIBUTIONS.

               (a)    Within 45 days following the end of (i) the period
beginning on the Closing Date and ending on June 30, 2001 and (ii) each Quarter
commencing with the Quarter beginning on July 1, 2001, an amount equal to 100%
of Available Cash with respect to such Quarter shall, subject to Section 17-607
of the Delaware Act, be distributed in accordance with this Article VI by the
Partnership to the Partners in accordance with their respective Percentage
Interests. The immediately preceding sentence shall not require any distribution
of cash if and to the extent such distribution would be prohibited by applicable
law or by any loan agreement, security agreement, mortgage, debt instrument or
other agreement or obligation to which the Partnership is a party or by which it
is bound or its assets are subject. All distributions required to be made under
this Agreement shall be made subject to Section 17-607 of the Delaware Act.

               (b)    In the event of the dissolution and liquidation of the
Partnership, all amounts received during or after the Quarter in which the
Liquidation Date occurs, other than from borrowings described in (a)(ii) of the
definition of Available Cash, shall be applied and distributed solely in
accordance with, and subject to the terms and conditions of, Section 12.4.

               (c)    The General Partner shall have the discretion to treat
taxes paid by the Partnership on behalf of, or amounts withheld with respect to,
all or less than all of the Partners, as a distribution of Available Cash to
such Partners.

                                   ARTICLE VII
                      MANAGEMENT AND OPERATION OF BUSINESS

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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SECTION 7.1    MANAGEMENT.

               (a)    The General Partner shall conduct, direct and manage all
activities of the Partnership. Except as otherwise expressly provided in this
Agreement, all management powers over the business and affairs of the
Partnership shall be exclusively vested in the General Partner, and neither the
Limited Partner nor Assignee shall have any management power over the business
and affairs of the Partnership. In addition to the powers now or hereafter
granted a general partner of a limited partnership under applicable law or which
are granted to the General Partner under any other provision of this Agreement,
the General Partner, subject to Section 7.3, shall have full power and authority
to do all things and on such terms as it, in its sole discretion, may deem
necessary or appropriate to conduct the business of the Partnership, to exercise
all powers set forth in Section 2.5 and to effectuate the purposes set forth in
Section 2.4, including the following:

               (i)    the making of any expenditures, the lending or borrowing
        of money, the assumption or guarantee of, or other contracting for,
        indebtedness and other liabilities, the issuance of evidences of
        indebtedness, including indebtedness that is convertible into a
        Partnership Interest, and the incurring of any other obligations;

               (ii)   the making of tax, regulatory and other filings, or
        rendering of periodic or other reports to governmental or other agencies
        having jurisdiction over the business or assets of the Partnership;

               (iii)  the acquisition, disposition, mortgage, pledge,
        encumbrance, hypothecation or exchange of any or all of the assets of
        the Partnership or the merger or other combination of the Partnership
        with or into another Person (the matters described in this clause (iii)
        being subject, however, to any prior approval that may be required by
        Section 7.3);

               (iv)   the use of the assets of the Partnership (including cash
        on hand) for any purpose consistent with the terms of this Agreement,
        including the financing of the conduct of the operations of the
        Partnership Group, subject to Section 7.6, the lending of funds to other
        Persons (including the MLP and any member of the Partnership Group), the
        repayment of obligations of the MLP or any member of the Partnership
        Group and the making of capital contributions to any member of the
        Partnership Group;

               (v)    the negotiation, execution and performance of any
        contracts, conveyances or other instruments (including instruments that
        limit the liability of the Partnership under contractual arrangements to
        all or particular assets of the Partnership, with the other party to the
        contract to have no recourse against the General Partner or its assets
        other than its interest in the Partnership, even if same results in the
        terms of the transaction being less favorable to the Partnership than
        would otherwise be the case);

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               (vi)   the distribution of Partnership cash;

               (vii)  the selection and dismissal of employees (including
        employees having titles such as "president," "vice president,"
        "secretary" and "treasurer") and agents, outside attorneys, accountants,
        consultants and contractors and the determination of their compensation
        and other terms of employment or hiring;

               (viii) the maintenance of such insurance for the benefit of the
        Partnership Group and the Partners as it deems necessary or appropriate;

               (ix)   the formation of, or acquisition of an interest in, and
        the contribution of property and the making of loans to, any further
        limited or general partnerships, joint ventures, corporations or other
        relationships subject to the restrictions set forth in Section 2.4;

               (x)    the control of any matters affecting the rights and
        obligations of the Partnership, including the bringing and defending of
        actions at law or in equity and otherwise engaging in the conduct of
        litigation and the incurring of legal expense and the settlement of
        claims and litigation; and

               (xi)   the indemnification of any Person against liabilities and
        contingencies to the extent permitted by law.

               (b)    Notwithstanding any other provision of this Agreement, the
MLP Agreement, the Delaware Act or any applicable law, rule or regulation, each
of the Partners and Assignees and each other Person who may acquire an interest
in the Partnership hereby (i) approves, ratifies and confirms the execution,
delivery and performance by the parties thereto of the Partnership Agreement,
the MLP Agreement, the Underwriting Agreement, the Bank Credit Agreement, the
Omnibus Agreement, the Contribution Agreement and the other agreements and
documents described in or filed as exhibits to the Registration Statement that
are related to the transactions contemplated by the Registration Statement; (ii)
agrees that the General Partner (on its own or through any officer of the
Partnership) is authorized to execute, deliver and perform the agreements
referred to in clause (i) of this sentence and the other agreements, acts,
transactions and matters described in or contemplated by the Registration
Statement on behalf of the Partnership without any further act, approval or vote
of the Partners or the Assignees or the other Persons who may acquire an
interest in the Partnership; and (iii) agrees that the execution, delivery or
performance by the General Partner, the MLP, any Group Member or any Affiliate
of any of them, of this Agreement or any agreement authorized or permitted under
this Agreement (including the exercise by the General Partner or any Affiliate
of the General Partner of the rights accorded pursuant to Article XV), shall not
constitute a breach by the General Partner of any duty that it may owe the
Partnership or the Limited Partners or any other Persons under this Agreement
(or any other agreements) or of any duty stated or implied by law or equity.

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SECTION 7.2    CERTIFICATE OF LIMITED PARTNERSHIP.

        The General Partner has caused the Certificate of Limited Partnership
and the Certificate of Amendment to the Certificate of Limited Partnership to be
filed with the Secretary of State of the State of Delaware as required by the
Delaware Act and shall use all reasonable efforts to cause to be filed such
other certificates or documents as may be determined by the General Partner in
its sole discretion to be reasonable and necessary or appropriate for the
formation, continuation, qualification and operation of a limited partnership
(or a partnership in which the limited partners have limited liability) in the
State of Delaware or any other state in which the Partnership may elect to do
business or own property. To the extent that such action is determined by the
General Partner in its sole discretion to be reasonable and necessary or
appropriate, the General Partner shall file amendments to and restatements of
the Certificate of Limited Partnership and do all things to maintain the
Partnership as a limited partnership (or a partnership or other entity in which
the limited partners have limited liability) under the laws of the State of
Delaware or of any other state in which the Partnership may elect to do business
or own property. Subject to the terms of Section 3.4(a), the General Partner
shall not be required, before or after filing, to deliver or mail a copy of the
Certificate of Limited Partnership, any qualification document or any amendment
thereto to any Limited Partner or Assignee.

SECTION 7.3    RESTRICTIONS ON GENERAL PARTNER'S AUTHORITY.

               (a)    The General Partner may not, without written approval of
the specific act by the Limited Partners or by other written instrument executed
and delivered by the Limited Partners subsequent to the date of this Agreement,
take any action in contravention of this Agreement, including, except as
otherwise provided in this Agreement, (i) committing any act that would make it
impossible to carry on the ordinary business of the Partnership; (ii) possessing
Partnership property, or assigning any rights in specific Partnership property,
for other than a Partnership purpose; (iii) admitting a Person as a Partner;
(iv) amending this Agreement in any manner or (v) transferring its General
Partner Interest.

               (b)    Except as provided in Articles XII and XIV, the General
Partner may not sell, exchange or otherwise dispose of all or substantially all
of the Partnership's assets in a single transaction or a series of related
transactions (including by way of merger, consolidation or other combination) or
approve on behalf of the Partnership the sale, exchange or other disposition of
all or substantially all of the assets of the Partnership, without the approval
of the Limited Partners; PROVIDED, HOWEVER, that this provision shall not
preclude or limit the General Partner's ability to mortgage, pledge, hypothecate
or grant a security interest in all or substantially all of the assets of the
Partnership and shall not apply to any forced sale of any or all of the assets
of the Partnership pursuant to the foreclosure of, or other realization upon,
any such encumbrance. Without the approval of at least a Unit Majority, the
General Partner shall not, on behalf of the MLP, (i) consent to any amendment to
this Agreement or, except as expressly permitted by Section 7.9(d) of the MLP
Agreement, take any action permitted to be taken by a Partner, in either case,
that would have a material adverse effect on the MLP as a Partner or the

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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holders of Common Units (other than the General Partner and its Affiliates) or
(ii) except as permitted under Sections 4.6, 11.1, 11.2 or 11.3 of the MLP
Agreement, elect or cause the MLP to elect a successor general partner of the
Partnership.

SECTION 7.4    REIMBURSEMENT OF THE GENERAL PARTNER.

               (a)    Except as provided in this Section 7.4 and elsewhere in
this Agreement or in the MLP Agreement, the General Partner shall not be
compensated for its services as General Partner, general partner of the MLP or
as a general partner or managing member of any Group Member.

               (b)    Subject to the Services Agreement, the General Partner
shall be reimbursed on a monthly basis, or such other reasonable basis as the
General Partner may determine in its sole discretion, for (i) all direct and
indirect expenses it incurs or payments it makes on behalf of the Partnership
(including salary, bonus, incentive compensation and other amounts paid to any
Person including Affiliates of the General Partner to perform services for the
Partnership or for the General Partner in the discharge of its duties to the
Partnership), and (ii) all other necessary or appropriate expenses allocable to
the Partnership or otherwise reasonably incurred by the General Partner in
connection with operating the Partnership's business (including expenses
allocated to the General Partner by its Affiliates). The General Partner shall
determine the expenses that are allocable to the Partnership in any reasonable
manner determined by the General Partner in its sole discretion. Reimbursements
pursuant to this Section 7.4 shall be in addition to any reimbursement to the
General Partner as a result of indemnification pursuant to Section 7.7.

               (c)    The General Partner, in its sole discretion and without
the approval of the Limited Partners (who shall have no right to vote in respect
thereof), may propose and adopt on behalf of the Partnership employee benefit
plans, employee programs and employee practices, or cause the Partnership to
issue Partnership Interests, in connection with, pursuant to any employee
benefit plan, employee program or employee practice maintained or sponsored by
the General Partner or any of its Affiliates, in each case for the benefit of
employees of the General Partner, any Group Member or any Affiliate, or any of
them, in respect of services performed, directly or indirectly, for the benefit
of the Partnership Group. Expenses incurred by the General Partner in connection
with any such plans, programs and practices shall be reimbursed in accordance
with Section 7.4(b). Any and all obligations of the General Partner under any
employee benefit plans, employee programs or employee practices adopted by the
General Partner as permitted by this Section 7.4(c) shall constitute obligations
of the General Partner hereunder and shall be assumed by any successor General
Partner approved pursuant to Section 11.1 or 11.2 or the transferee of or
successor to all of the General Partner's General Partner Interest pursuant to
Section 4.2.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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SECTION 7.5    OUTSIDE ACTIVITIES.

               (a)    After the Closing Date, the General Partner, for so long
as it is a General Partner of the Partnership (i) agrees that its sole business
will be to act as a general partner of the Partnership, a general partner of the
MLP, and a general partner or managing member of any other partnership or
limited liability company of which the Partnership or the MLP is, directly or
indirectly, a partner or member, as the case may be, and to undertake activities
that are ancillary or related thereto (including being a limited partner in the
MLP), (ii) shall not engage in any business or activity or incur any debts or
liabilities except in connection with or incidental to (A) its performance as
general partner of the Partnership, the MLP or one or more Group Members or as
described in or contemplated by the Registration Statement or (B) the acquiring,
owning or disposing of debt or equity securities in any Group Member and (iii)
except to the extent permitted in the Omnibus Agreement, shall not, and shall
cause its Affiliates not to, engage in any Restricted Business.

               (b)    The Omnibus Agreement, to which the Partnership is a
party, sets forth certain restrictions on the ability of Ultramar Diamond
Shamrock and its Affiliates to engage in Restricted Businesses.

               (c)    Except as specifically restricted by Section 7.5(a) and
the Omnibus Agreement, each Indemnitee (other than the General Partner) shall
have the right to engage in businesses of every type and description and other
activities for profit and to engage in and possess an interest in other business
ventures of any and every type or description, whether in businesses engaged in
or anticipated to be engaged in by the MLP or any Group Member, independently or
with others, including business interests and activities in direct competition
with the business and activities of the MLP or any Group Member, and none of the
same shall constitute a breach of this Agreement or any duty express or implied
by law to the MLP or any Group Member or any Partner or Assignee. Neither the
MLP nor any Group Member, any Limited Partner, nor any other Person shall have
any rights by virtue of this Agreement, the MLP Agreement or the partnership
relationship established hereby or thereby in any business ventures of any
Indemnitee.

               (d)    Subject to the terms of Section 7.5(a), Section 7.5(b),
Section 7.5(c) and the Omnibus Agreement, but otherwise notwithstanding anything
to the contrary in this Agreement, (i) the engaging in competitive activities by
any Indemnitees (other than the General Partner) in accordance with the
provisions of this Section 7.5 is hereby approved by the Partnership and all
Partners, (ii) it shall be deemed not to be a breach of the General Partner's
fiduciary duty or any other obligation of any type whatsoever of the General
Partner for the Indemnitees (other than the General Partner) to engage in such
business interests and activities in preference to or to the exclusion of the
Partnership and (iii) except as set forth in the Omnibus Agreement, the General
Partner and the Indemnities shall have no obligation to present business
opportunities to the Partnership.

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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               (e)    The General Partner and any of its Affiliates may acquire
Units or other MLP Securities in addition to those acquired on the Closing Date
and, except as otherwise provided in this Agreement, shall be entitled to
exercise all rights relating to such Units or MLP Securities.

               (f)    The term "Affiliates" when used in Section 7.5(a) and
Section 7.5(e) with respect to the General Partner shall not include any Group
Member or any Subsidiary of the MLP or any Group Member.

               (g)    Anything in this Agreement to the contrary
notwithstanding, to the extent that provisions of Sections 7.7, 7.8, 7.9, 7.10
or other Sections of this Agreement purport or are interpreted to have the
effect of restricting the fiduciary duties that might otherwise, as a result of
Delaware or other applicable law, be owed by the General Partner to the
Partnership and its Limited Partners, or to constitute a waiver or consent by
the Limited Partners to any such restriction, such provisions shall be
inapplicable and have no effect in determining whether the General Partner has
complied with its fiduciary duties in connection with determinations made by it
under this Section 7.5.

SECTION 7.6    LOANS FROM THE GENERAL PARTNER; LOANS OR CONTRIBUTIONS FROM THE
PARTNERSHIP; CONTRACTS WITH AFFILIATES; CERTAIN RESTRICTIONS ON THE GENERAL
PARTNER.

               (a)    The General Partner or any of its Affiliates may lend to
the MLP or any Group Member, and the MLP or any Group Member may borrow from the
General Partner or any of its Affiliates, funds needed or desired by the MLP or
the Group Member for such periods of time and in such amounts as the General
Partner may determine; PROVIDED, HOWEVER, that in any such case the lending
party may not charge the borrowing party interest at a rate greater than the
rate that would be charged the borrowing party or impose terms less favorable to
the borrowing party than would be charged or imposed on the borrowing party by
unrelated lenders on comparable loans made on an arm's-length basis (without
reference to the lending party's financial abilities or guarantees). The
borrowing party shall reimburse the lending party for any costs (other than any
additional interest costs) incurred by the lending party in connection with the
borrowing of such funds. For purposes of this Section 7.6(a) and Section 7.6(b),
the term "Group Member" shall include any Affiliate of a Group Member that is
controlled by the Group Member. No Group Member may lend funds to the General
Partner or any of its Affiliates (other than the MLP, a Subsidiary of the MLP or
a Subsidiary of another Group Member).

               (b)    The Partnership may lend or contribute to any Group
Member, and any Group Member may borrow from the Partnership, funds on terms and
conditions established in the sole discretion of the General Partner; PROVIDED,
HOWEVER, that the Partnership may not charge the Group Member interest at a rate
less than the rate that would be charged to the Group Member (without reference
to the General Partner's financial abilities or guarantees) by unrelated lenders
on comparable loans. The foregoing authority shall be exercised by the General
Partner in

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its sole discretion and shall not create any right or benefit in favor of any
Group Member or any other Person.

               (c)    The General Partner may itself, or may enter into an
agreement with any of its Affiliates to, render services to a Group Member or to
the General Partner in the discharge of its duties as general partner of the
Partnership. Any services rendered to a Group Member by the General Partner or
any of its Affiliates shall be on terms that are fair and reasonable to the
Partnership; PROVIDED, HOWEVER, that the requirements of this Section 7.6(c)
shall be deemed satisfied as to (i) any transaction approved by Special
Approval, (ii) any transaction, the terms of which are no less favorable to the
Partnership Group than those generally being provided to or available from
unrelated third parties or (iii) any transaction that, taking into account the
totality of the relationships between the parties involved (including other
transactions that may be particularly favorable or advantageous to the
Partnership Group), is equitable to the Partnership Group. The provisions of
Section 7.4 shall apply to the rendering of services described in this Section
7.6(c).

               (d)    The Partnership Group may transfer assets to joint
ventures, other partnerships, corporations, limited liability companies or other
business entities in which it is or thereby becomes a participant upon such
terms and subject to such conditions as are consistent with this Agreement and
applicable law.

               (e)    Neither the General Partner nor any of its Affiliates
shall sell, transfer or convey any property to, or purchase any property from,
the Partnership, directly or indirectly, except pursuant to transactions that
are fair and reasonable to the Partnership; PROVIDED, HOWEVER, that the
requirements of this Section 7.6(e) shall be deemed to be satisfied as to (i)
the transactions effected pursuant to Sections 5.2 and 5.3, the Contribution
Agreement and any other transactions described in or contemplated by the
Registration Statement, (ii) any transaction approved by Special Approval, (iii)
any transaction, the terms of which are no less favorable to the Partnership
than those generally being provided to or available from unrelated third
parties, or (iv) any transaction that, taking into account the totality of the
relationships between the parties involved (including other transactions that
may be particularly favorable or advantageous to the Partnership), is equitable
to the Partnership.

               (f)    The General Partner and its Affiliates will have no
obligation to permit any Group Member to use any facilities or assets of the
General Partner and its Affiliates, except as may be provided in contracts
entered into from time to time specifically dealing with such use, nor shall
there be any obligation on the part of the General Partner or its Affiliates to
enter into such contracts.

               (g)    Without limitation of Sections 7.6(a) through 7.6(f), and
notwithstanding anything to the contrary in this Agreement, the existence of the
conflicts of interest described in the Registration Statement are hereby
approved by all Partners.

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SECTION 7.7    INDEMNIFICATION.

               (a)    To the fullest extent permitted by law but subject to the
limitations expressly provided in this Agreement, all Indemnitees shall be
indemnified and held harmless by the Partnership from and against any and all
losses, claims, damages, liabilities, joint or several, expenses (including
legal fees and expenses), judgments, fines, penalties, interest, settlements or
other amounts arising from any and all claims, demands, actions, suits or
proceedings, whether civil, criminal, administrative or investigative, in which
any Indemnitee may be involved, or is threatened to be involved, as a party or
otherwise, by reason of its status as an Indemnitee; PROVIDED, that in each case
the Indemnitee acted in good faith and in a manner that such Indemnitee
reasonably believed to be in, or (in the case of a Person other than the General
Partner) not opposed to, the best interests of the Partnership and, with respect
to any criminal proceeding, had no reasonable cause to believe its conduct was
unlawful; PROVIDED, FURTHER, no indemnification pursuant to this Section 7.7
shall be available to the General Partner with respect to its obligations
incurred pursuant to the Underwriting Agreement or the Contribution Agreement
(other than obligations incurred by the General Partner on behalf of the MLP or
the Partnership). The termination of any action, suit or proceeding by judgment,
order, settlement, conviction or upon a plea of NOLO CONTENDERE, or its
equivalent, shall not create a presumption that the Indemnitee acted in a manner
contrary to that specified above. Any indemnification pursuant to this Section
7.7 shall be made only out of the assets of the Partnership, it being agreed
that the General Partner shall not be personally liable for such indemnification
and shall have no obligation to contribute or loan any monies or property to the
Partnership to enable it to effectuate such indemnification.

               (b)    To the fullest extent permitted by law, expenses
(including legal fees and expenses) incurred by an Indemnitee who is indemnified
pursuant to Section 7.7(a) in defending any claim, demand, action, suit or
proceeding shall, from time to time, be advanced by the Partnership prior to the
final disposition of such claim, demand, action, suit or proceeding upon receipt
by the Partnership of any undertaking by or on behalf of the Indemnitee to repay
such amount if it shall be determined that the Indemnitee is not entitled to be
indemnified as authorized in this Section 7.7.

               (c)    The indemnification provided by this Section 7.7 shall be
in addition to any other rights to which an Indemnitee may be entitled under any
agreement, pursuant to any vote of the Partners, as a matter of law or
otherwise, both as to actions in the Indemnitee's capacity as an Indemnitee and
as to actions in any other capacity (including any capacity under the
Underwriting Agreement and the Bank Credit Agreement), and shall continue as to
an Indemnitee who has ceased to serve in such capacity and shall inure to the
benefit of the heirs, successors, assigns and administrators of the Indemnitee.

               (d)    The Partnership may purchase and maintain (or reimburse
the General Partner or its Affiliates for the cost of) insurance, on behalf of
the General Partner, its Affiliates and such other Persons as the General
Partner shall determine, against any liability that may be

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asserted against or expense that may be incurred by such Person in connection
with the Partnership's activities or such Person's activities on behalf of the
Partnership, regardless of whether the Partnership would have the power to
indemnify such Person against such liability under the provisions of this
Agreement.

               (e)    For purposes of this Section 7.7, the Partnership shall be
deemed to have requested an Indemnitee to serve as fiduciary of an employee
benefit plan whenever the performance by it of its duties to the Partnership
also imposes duties on, or otherwise involves services by, it to the plan or
participants or beneficiaries of the plan; excise taxes assessed on an
Indemnitee with respect to an employee benefit plan pursuant to applicable law
shall constitute "fines" within the meaning of Section 7.7(a); and action taken
or omitted by it with respect to any employee benefit plan in the performance of
its duties for a purpose reasonably believed by it to be in the interest of the
participants and beneficiaries of the plan shall be deemed to be for a purpose
which is in, or not opposed to, the best interests of the Partnership.

               (f)    In no event may an Indemnitee subject the Limited Partners
to personal liability by reason of the indemnification provisions set forth in
this Agreement.

               (g)    An Indemnitee shall not be denied indemnification in whole
or in part under this Section 7.7 because the Indemnitee had an interest in the
transaction with respect to which the indemnification applies if the transaction
was otherwise permitted by the terms of this Agreement.

               (h)    The provisions of this Section 7.7 are for the benefit of
the Indemnitees, their heirs, successors, assigns and administrators and shall
not be deemed to create any rights for the benefit of any other Persons.

               (i)    No amendment, modification or repeal of this Section 7.7
or any provision hereof shall in any manner terminate, reduce or impair the
right of any past, present or future Indemnitee to be indemnified by the
Partnership, nor the obligations of the Partnership to indemnify any such
Indemnitee under and in accordance with the provisions of this Section 7.7 as in
effect immediately prior to such amendment, modification or repeal with respect
to claims arising from or relating to matters occurring, in whole or in part,
prior to such amendment, modification or repeal, regardless of when such claims
may arise or be asserted.

SECTION 7.8    LIABILITY OF INDEMNITEES.

               (a)    Notwithstanding anything to the contrary set forth in this
Agreement, no Indemnitee shall be liable for monetary damages to the
Partnership, the Limited Partners, the Assignees or any other Persons who have
acquired interests in the Partnership, Units or other MLP Securities, for losses
sustained or liabilities incurred as a result of any act or omission if such
Indemnitee acted in good faith.

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               (b)    Subject to its obligations and duties as General Partner
set forth in Section 7.1(a), the General Partner may exercise any of the powers
granted to it by this Agreement and perform any of the duties imposed upon it
hereunder either directly or by or through its agents, and the General Partner
shall not be responsible for any misconduct or negligence on the part of any
such agent appointed by the General Partner in good faith.

               (c)    To the extent that, at law or in equity, an Indemnitee has
duties (including fiduciary duties) and liabilities relating thereto to the
Partnership or to the Limited Partners, the General Partner and any other
Indemnitee acting in connection with the Partnership's business or affairs shall
not be liable to the Partnership or to any Partner for its good faith reliance
on the provisions of this Agreement. The provisions of this Agreement, to the
extent that they restrict or otherwise modify the duties and liabilities of an
Indemnitee otherwise existing at law or in equity, are agreed by the Partners to
replace such other duties and liabilities of such Indemnitee.

               (d)    Any amendment, modification or repeal of this Section 7.8
or any provision hereof shall be prospective only and shall not in any way
affect the limitations on the liability to the Partnership, the Limited
Partners, the General Partner, and the Partnership's and General Partner's
directors, officers and employees under this Section 7.8 as in effect
immediately prior to such amendment, modification or repeal with respect to
claims arising from or relating to matters occurring, in whole or in part, prior
to such amendment, modification or repeal, regardless of when such claims may
arise or be asserted.

SECTION 7.9    RESOLUTION OF CONFLICTS OF INTEREST.

               (a)    Unless otherwise expressly provided in this Agreement or
the MLP Agreement, whenever a potential conflict of interest exists or arises
between the General Partner or any of its Affiliates, on the one hand, and the
Partnership, the MLP, any Partner or any Assignee, on the other, any resolution
or course of action by the General Partner or its Affiliates in respect of such
conflict of interest shall be permitted and deemed approved by all Partners, and
shall not constitute a breach of this Agreement of the MLP Agreement, of any
agreement contemplated herein or therein, or of any duty stated or implied by
law or equity, if the resolution or course of action is, or by operation of this
Agreement is deemed to be, fair and reasonable to the Partnership. The General
Partner shall be authorized but not required in connection with its resolution
of such conflict of interest to seek Special Approval of such resolution. Any
conflict of interest and any resolution of such conflict of interest shall be
conclusively deemed fair and reasonable to the Partnership if such conflict of
interest or resolution is (i) approved by Special Approval, (ii) on terms no
less favorable to the Partnership than those generally being provided to or
available from unrelated third parties or (iii) fair to the Partnership, taking
into account the totality of the relationships between the parties involved
(including other transactions that may be particularly favorable or advantageous
to the Partnership). The General Partner may also adopt a resolution or course
of action that has not received Special Approval. The General Partner (including
the Conflicts Committee in connection with Special Approval) shall be authorized
in connection with its determination of what is "fair and reasonable" to the
Partnership and in

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connection with its resolution of any conflict of interest to consider (A) the
relative interests of any party to such conflict, agreement, transaction or
situation and the benefits and burdens relating to such interest; (B) any
customary or accepted industry practices and any customary or historical
dealings with a particular Person; (C) any applicable generally accepted
accounting practices or principles; and (D) such additional factors as the
General Partner (including the Conflicts Committee) determines in its sole
discretion to be relevant, reasonable or appropriate under the circumstances.
Nothing contained in this Agreement, however, is intended to nor shall it be
construed to require the General Partner (including the Conflicts Committee) to
consider the interests of any Person other than the Partnership. In the absence
of bad faith by the General Partner, the resolution, action or terms so made,
taken or provided by the General Partner with respect to such matter shall not
constitute a breach of this Agreement or any other agreement contemplated herein
or a breach of any standard of care or duty imposed herein or therein or, to the
extent permitted by law, under the Delaware Act or any other law, rule or
regulation.

               (b)    Whenever this Agreement or any other agreement
contemplated hereby provides that the General Partner or any of its Affiliates
is permitted or required to make a decision (i) in its "sole discretion" or
"discretion," that it deems "necessary or appropriate" or "necessary or
advisable" or under a grant of similar authority or latitude, except as
otherwise provided herein, the General Partner or such Affiliate shall be
entitled to consider only such interests and factors as it desires and shall
have no duty or obligation to give any consideration to any interest of, or
factors affecting, the Partnership, the MLP, any Limited Partner or any
Assignee, (ii) it may make such decision in its sole discretion (regardless of
whether there is a reference to "sole discretion" or "discretion") unless
another express standard is provided for, or (iii) in "good faith" or under
another express standard, the General Partner or such Affiliate shall act under
such express standard and shall not be subject to any other or different
standards imposed by this Agreement, the MLP Agreement, or any other agreement
contemplated hereby or under the Delaware Act or any other law, rule or
regulation. In addition, any actions taken by the General Partner or such
Affiliate consistent with the standards of "reasonable discretion" set forth in
the definition of Available Cash shall not constitute a breach of any duty of
the General Partner to the Partnership or the Limited Partners. The General
Partner shall have no duty, express or implied, to sell or otherwise dispose of
any asset of the Partnership Group other than in the ordinary course of
business. No borrowing by any Group Member or the approval thereof by the
General Partner shall be deemed to constitute a breach of any duty of the
General Partner to the Partnership or the Limited Partners by reason of the fact
that the purpose or effect of such borrowing is directly or indirectly to (A)
enable distributions to the General Partner or its Affiliates to exceed 1.0101%
of the total amount distributed to all Partners or (B) hasten the expiration of
the Subordination Period or the conversion of any Subordinated Units into Common
Units.

               (c)    Whenever a particular transaction, arrangement or
resolution of a conflict of interest is required under this Agreement to be
"fair and reasonable" to any Person, the fair and reasonable nature of such
transaction, arrangement or resolution shall be considered in the context of all
similar or related transactions.

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               (d)    The Limited Partner hereby authorizes the General Partner,
on behalf of the Partnership as a partner or member of a Group Member, to
approve of actions by the general partner of such Group Member similar to those
actions permitted to be taken by the General Partner pursuant to this Section
7.9.

SECTION 7.10   OTHER MATTERS CONCERNING THE GENERAL PARTNER.

               (a)    The General Partner may rely and shall be protected in
acting or refraining from acting upon any resolution, certificate, statement,
instrument, opinion, report, notice, request, consent, order, bond, debenture or
other paper or document believed by it to be genuine and to have been signed or
presented by the proper party or parties.

               (b)    The General Partner may consult with legal counsel,
accountants, appraisers, management consultants, investment bankers and other
consultants and advisers selected by it, and any act taken or omitted to be
taken in reliance upon the opinion (including an Opinion of Counsel) of such
Persons as to matters that the General Partner reasonably believes to be within
such Person's professional or expert competence shall be conclusively presumed
to have been done or omitted in good faith and in accordance with such opinion.

               (c)    The General Partner shall have the right, in respect of
any of its powers or obligations hereunder, to act through any of its duly
authorized officers, a duly appointed attorney or attorneys-in-fact or the duly
authorized officers of the Partnership.

               (d)    Any standard of care and duty imposed by this Agreement or
under the Delaware Act or any applicable law, rule or regulation shall be
modified, waived or limited, to the extent permitted by law, as required to
permit the General Partner to act under this Agreement or any other agreement
contemplated by this Agreement and to make any decision pursuant to the
authority prescribed in this Agreement, so long as such action is reasonably
believed by the General Partner to be in, or not inconsistent with, the best
interests of the Partnership.

SECTION 7.11   RELIANCE BY THIRD PARTIES.

        Notwithstanding anything to the contrary in this Agreement, any Person
dealing with the Partnership shall be entitled to assume that the General
Partner and any officer of Shamrock GP authorized by Shamrock GP to act on
behalf of and in the name of the Partnership has full power and authority to
encumber, sell or otherwise use in any manner any and all assets of the
Partnership and to enter into any authorized contracts on behalf of the
Partnership, and such Person shall be entitled to deal with the General Partner
or any such officer as if it were the Partnership's sole party in interest, both
legally and beneficially. Each Limited Partner hereby waives any and all
defenses or other remedies that may be available against such Person to contest,
negate or disaffirm any action of the General Partner or any such officer in
connection

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with any such dealing. In no event shall any Person dealing with the General
Partner or any such officer or its representatives be obligated to ascertain
that the terms of the Agreement have been complied with or to inquire into the
necessity or expedience of any act or action of the General Partner or any such
officer or its representatives. Each and every certificate, document or other
instrument executed on behalf of the Partnership by the General Partner or its
representatives shall be conclusive evidence in favor of any and every Person
relying thereon or claiming thereunder that (a) at the time of the execution and
delivery of such certificate, document or instrument, this Agreement was in full
force and effect, (b) the Person executing and delivering such certificate,
document or instrument was duly authorized and empowered to do so for and on
behalf of the Partnership and (c) such certificate, document or instrument was
duly executed and delivered in accordance with the terms and provisions of this
Agreement and is binding upon the Partnership.

                                  ARTICLE VIII
                     BOOKS, RECORDS, ACCOUNTING AND REPORTS

SECTION 8.1    RECORDS AND ACCOUNTING.

        The General Partner shall keep or cause to be kept at the principal
office of the Partnership appropriate books and records with respect to the
Partnership's business, including all books and records necessary to provide to
the Limited Partners any information required to be provided pursuant to Section
3.4(a). Any books and records maintained by or on behalf of the Partnership in
the regular course of its business, including books of account and records of
Partnership proceedings, may be kept on, or be in the form of, computer disks,
hard drives, punch cards, magnetic tape, photographs, micrographics or any other
information storage device; PROVIDED, that the books and records so maintained
are convertible into clearly legible written form within a reasonable period of
time. The books of the Partnership shall be maintained, for financial reporting
purposes, on an accrual basis in accordance with U.S. GAAP.

SECTION 8.2    FISCAL YEAR.

        The fiscal year of the Partnership shall be a fiscal year ending
December 31.

                                   ARTICLE IX
                                   TAX MATTERS

SECTION 9.1    TAX RETURNS AND INFORMATION.

        The Partnership shall timely file all returns of the Partnership that
are required for federal, state and local income tax purposes on the basis of
the accrual method and a taxable year ending on December 31. The tax information
reasonably required by the Partners for federal and state income tax reporting
purposes with respect to a taxable year shall be furnished to them within 90
days of the close of the calendar year in which the Partnership's taxable year
ends. The

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classification, realization and recognition of income, gain, losses and
deductions and other items shall be on the accrual method of accounting for
federal income tax purposes.

SECTION 9.2    TAX ELECTIONS.

               (a)    The Partnership shall make the election under Section 754
of the Code in accordance with applicable regulations thereunder, subject to the
reservation of the right to seek to revoke any such election upon the General
Partner's determination that such revocation is in the best interests of the
Limited Partners.

               (b)    The Partnership shall elect to deduct expenses incurred in
organizing the Partnership ratably over a sixty-month period as provided in
Section 709 of the Code.

               (c)    Except as otherwise provided herein, the General Partner
shall determine whether the Partnership should make any other elections
permitted by the Code.

SECTION 9.3    TAX CONTROVERSIES.

        Subject to the provisions hereof, the General Partner is designated as
the Tax Matters Partner (as defined in the Code) and is authorized and required
to represent the Partnership (at the Partnership's expense) in connection with
all examinations of the Partnership's affairs by tax authorities, including
resulting administrative and judicial proceedings, and to expend Partnership
funds for professional services and costs associated therewith. Each Partner
agrees to cooperate with the General Partner and to do or refrain from doing any
or all things reasonably required by the General Partner to conduct such
proceedings.

SECTION 9.4    WITHHOLDING.

        Notwithstanding any other provision of this Agreement, the General
Partner is authorized to take any action that it determines in its discretion to
be necessary or appropriate to cause the Partnership to comply with any
withholding requirements established under the Code or any other federal, state
or local law including, without limitation, pursuant to Sections 1441, 1442,
1445 and 1446 of the Code. To the extent that the Partnership is required or
elects to withhold and pay over to any taxing authority any amount resulting
from the allocation or distribution of income to any Partner or Assignee
(including, without limitation, by reason of Section 1446 of the Code), the
amount withheld may at the discretion of the General Partner be treated by the
Partnership as a distribution of cash pursuant to Section 6.3 in the amount of
such withholding from such Partner.

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                                    ARTICLE X
                              ADMISSION OF PARTNERS

SECTION 10.1   ADMISSION OF GENERAL PARTNER.

        Upon the consummation of the transfers and conveyances described in
Section 5.2, the General Partner shall be admitted as a General Partner, and the
General Partner shall be the only general partner of the Partnership and the MLP
shall be the sole limited partner of the Partnership.

SECTION 10.2   ADMISSION OF SUBSTITUTED LIMITED PARTNER.

        By transfer of a Limited Partner Interest in accordance with Article IV,
the transferor shall be deemed to have given the transferee the right to seek
admission as a Substituted Limited Partner subject to the conditions of, and in
the manner permitted under, this Agreement. A transferor of a Limited Partner
Interest shall, however, only have the authority to convey to a purchaser or
other transferee (a) the right to negotiate such Limited Partner Interest to a
purchaser or other transferee and (b) the right to request admission as a
Substituted Limited Partner to such purchaser or other transferee in respect of
the transferred Limited Partner Interests. Each transferee of a Limited Partner
Interest shall be an Assignee and be deemed to have applied to become a
Substituted Limited Partner with respect to the Limited Partner Interests so
transferred to such Person. Such Assignee shall become a Substituted Limited
Partner (x) at such time as the General Partner consents thereto, which consent
may be given or withheld in the General Partner's discretion, and (y) when any
such admission is shown on the books and records of the Partnership. If such
consent is withheld, such transferee shall remain an Assignee. An Assignee shall
have an interest in the Partnership equivalent to that of a Limited Partner with
respect to allocations and distributions, including liquidating distributions,
of the Partnership. With respect to voting rights attributable to Limited
Partner Interests that are held by Assignees, the General Partner shall be
deemed to be the Limited Partner with respect thereto and shall, in exercising
the voting rights in respect of such Limited Partner Interests on any matter,
vote such Limited Partner Interests at the written direction of the Assignee. If
no such written direction is received, such Partnership Interests will not be
voted. An Assignee shall have no other rights of a Limited Partner.

SECTION 10.3   ADMISSION OF ADDITIONAL LIMITED PARTNERS.

               (a)    A Person (other than the General Partner, the MLP or a
Substituted Limited Partner) who makes a Capital Contribution to the Partnership
in accordance with this Agreement shall be admitted to the Partnership as an
Additional Limited Partner only upon furnishing to the General Partner (i)
evidence of acceptance in form satisfactory to the General Partner of all of the
terms and conditions of this Agreement, including the power of attorney granted
in Section 2.6, and (ii) such other documents or instruments as may be required
in the

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discretion of the General Partner to effect such Person's admission as an
Additional Limited Partner.

               (b)    Notwithstanding anything to the contrary in this Section
10.3, no Person shall be admitted as an Additional Limited Partner without the
consent of the General Partner, which consent may be given or withheld in the
General Partner's discretion. The admission of any Person as an Additional
Limited Partner shall become effective on the date upon which the name of such
Person is recorded as such in the books and records of the Partnership,
following the consent of the General Partner to such admission.

SECTION 10.4   ADMISSION OF SUCCESSOR OR TRANSFEREE GENERAL PARTNER.

        A successor General Partner approved pursuant to Section 11.1 or 11.2 or
the transferee of or successor to all of the General Partner Interest pursuant
to Section 4.2 who is proposed to be admitted as a successor General Partner
shall, subject to compliance with the terms of Section 11.3, if applicable, be
admitted to the Partnership as the General Partner effective immediately prior
to the withdrawal or removal of the predecessor or transferring General Partner
pursuant to Section 11.1 or 11.2 or the transfer of the General Partner Interest
pursuant to Section 4.2, PROVIDED, HOWEVER, that no such successor shall be
admitted to the Partnership until compliance with the terms of Section 4.2 has
occurred and such successor has executed and delivered such other documents or
instruments as may be required to effect such admission. Any such successor
shall, subject to the terms hereof, carry on the business of the members of the
Partnership Group without dissolution.

SECTION 10.5   AMENDMENT OF AGREEMENT AND CERTIFICATE OF LIMITED PARTNERSHIP.

        To effect the admission to the Partnership of any Partner, the General
Partner shall take all steps necessary and appropriate under the Delaware Act to
amend the records of the Partnership to reflect such admission and, if
necessary, to prepare as soon as practicable an amendment to this Agreement and,
if required by law, the General Partner shall prepare and file an amendment to
the Certificate of Limited Partnership, and the General Partner may for this
purpose, among others, exercise the power of attorney granted pursuant to
Section 2.6.

                                   ARTICLE XI
                        WITHDRAWAL OR REMOVAL OF PARTNERS

SECTION 11.1   WITHDRAWAL OF THE GENERAL PARTNER.

               (a)    The General Partner shall be deemed to have withdrawn from
the Partnership upon the occurrence of any one of the following events (each
such event herein referred to as an "Event of Withdrawal"):

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               (i)    The General Partner voluntarily withdraws from the
        Partnership by giving written notice to the other Partners;

               (ii)   The General Partner transfers all of its rights as General
        Partner pursuant to Section 4.2;

               (iii)  The General Partner is removed pursuant to Section 11.2;

               (iv)   The General Partner withdraws from, or is removed as the
        General Partner of, the MLP;

               (v)    The General Partner (A) makes a general assignment for the
        benefit of creditors; (B) files a voluntary bankruptcy petition for
        relief under Chapter 7 of the United States Bankruptcy Code; (C) files a
        petition or answer seeking for itself a liquidation, dissolution or
        similar relief (but not a reorganization) under any law; (D) files an
        answer or other pleading admitting or failing to contest the material
        allegations of a petition filed against the General Partner in a
        proceeding of the type described in clauses (A)-(C) of this Section
        11.1(a)(v); or (E) seeks, consents to or acquiesces in the appointment
        of a trustee (but not a debtor in possession), receiver or liquidator of
        the General Partner or of all or any substantial part of its properties;

               (vi)   A final and non-appealable order of relief under Chapter 7
        of the United States Bankruptcy Code is entered by a court with
        appropriate jurisdiction pursuant to a voluntary or involuntary petition
        by or against the General Partner; or

               (vii)  (A)  if the General Partner is a corporation, a
        certificate of dissolution or its equivalent is filed for the General
        Partner, or 90 days expire after the date of notice to the General
        Partner of revocation of its charter without a reinstatement of its
        charter, under the laws of its state of incorporation; (B) if the
        General Partner is a partnership or limited liability company, the
        dissolution and commencement of winding up of the General Partner; (C)
        if the General Partner is acting in such capacity by virtue of being a
        trustee of a trust, the termination of the trust; (D) if the General
        Partner is a natural person, his death or adjudication of incompetency;
        and (E) otherwise in the event of the termination of the General
        Partner.

        If an Event of Withdrawal specified in Section 11.1(a)(iv)(with respect
to withdrawal), (v), (vi) or (vii)(A), (B), (C) or (E) occurs, the withdrawing
General Partner shall give notice to the Limited Partners within 30 days after
such occurrence. The Partners hereby agree that only the Events of Withdrawal
described in this Section 11.1 shall result in the withdrawal of the General
Partner from the Partnership.

               (b)    Withdrawal of the General Partner from the Partnership
upon the occurrence of an Event of Withdrawal shall not constitute a breach of
this Agreement under the

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following circumstances: (i) at any time during the period beginning on the
Closing Date and ending at 12:00 midnight, Eastern Standard Time, on March 31,
2011, the General Partner voluntarily withdraws by giving at least 90 days'
advance notice of its intention to withdraw to the Limited Partners; PROVIDED,
that prior to the effective date of such withdrawal, the withdrawal is approved
by the Limited Partners and the General Partner delivers to the Partnership an
Opinion of Counsel ("WITHDRAWAL OPINION OF COUNSEL") that such withdrawal
(following the selection of the successor General Partner) would not result in
the loss of the limited liability of any Limited Partner, of the limited
partners of the MLP or cause the Partnership or the MLP to be treated as an
association taxable as a corporation or otherwise to be taxed as an entity for
federal income tax purposes (to the extent not previously treated as such); (ii)
at any time after 12:00 midnight, Eastern Standard Time, on March 31, 2011, the
General Partner voluntarily withdraws by giving at least 90 days' advance notice
to the Limited Partners, such withdrawal to take effect on the date specified in
such notice; (iii) at any time that the General Partner ceases to be the General
Partner pursuant to Section 11.1(a)(ii), (iii) or (iv). If the General Partner
gives a notice of withdrawal pursuant to Section 11.1(a)(i) hereof or Section
11.1(a)(i) of the MLP Agreement, the Limited Partners may, prior to the
effective date of such withdrawal, elect a successor General Partner; PROVIDED,
HOWEVER, that such successor shall be the same person, if any, that is elected
by the limited partners of the MLP pursuant to Section 11.1 of the MLP Agreement
as the successor to the general partner of the MLP. If, prior to the effective
date of the General Partner's withdrawal, a successor is not selected by the
Limited Partners as provided herein or the Partnership does not receive a
Withdrawal Opinion of Counsel, the Partnership shall be dissolved in accordance
with Section 12.1. Any successor General Partner elected in accordance with the
terms of this Section 11.1 shall be subject to the provisions of Section 10.3.

SECTION 11.2   REMOVAL OF THE GENERAL PARTNER.

        The General Partner shall be removed if the General Partner is removed
as the general partner of the MLP pursuant to Section 11.2 of the MLP Agreement.
Such removal shall be effective concurrently with the effectiveness of the
removal of the General Partner as the general partner of the MLP pursuant to the
terms of the MLP Agreement. If a successor general partner for the MLP is
elected in connection with the removal of the General Partner, such successor
general partner for the MLP shall, upon admission pursuant to Article X,
automatically become the successor General Partner of the Partnership. The
admission of any such successor General Partner to the Partnership shall be
subject to the provisions of Section 10.4.

SECTION 11.3   INTEREST OF DEPARTING PARTNER.

               (a)    The Partnership Interest of the Departing Partner
departing as a result of withdrawal or removal pursuant to Section 11.1 or 11.2
shall (unless it is otherwise required to be converted into Common Units
pursuant to Section 11.3(b) of the MLP Agreement) be purchased by the successor
to the Departing Partner for cash in the manner specified in the MLP Agreement.
Such purchase (or conversion into Common Units, as applicable) shall be a
condition to the admission to the Partnership of the successor as the General
Partner. Any

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successor General Partner shall indemnify the Departing Partner as to all debts
and liabilities of the Partnership arising on or after the effective date of the
withdrawal or removal of the Departing Partner.

               (b)    The Departing Partner shall be entitled to receive all
reimbursements due such Departing Partner pursuant to Section 7.4, including any
employee-related liabilities (including severance liabilities), incurred in
connection with the termination of any employees employed by such Departing
Partner for the benefit of the Partnership.

SECTION 11.4   WITHDRAWAL OF A LIMITED PARTNER.

        Without the prior written consent of the General Partner, which may be
granted or withheld in its sole discretion, and except as provided in Section
10.1, no Limited Partner shall have the right to withdraw from the Partnership.

                                   ARTICLE XII
                           DISSOLUTION AND LIQUIDATION

SECTION 12.1   DISSOLUTION.

        The Partnership shall not be dissolved by the admission of Substituted
Limited Partners or Additional Limited Partners or by the admission of a
successor General Partner in accordance with the terms of this Agreement. Upon
the removal or withdrawal of the General Partner, if a successor General Partner
is elected pursuant to Section 11.1 or 11.2, the Partnership shall not be
dissolved and such successor General Partner shall continue the business of the
Partnership. The Partnership shall dissolve, and (subject to Section 12.2) its
affairs shall be wound up, upon:

               (a)    the expiration of its term as provided in Section 2.7;

               (b)    an Event of Withdrawal of the General Partner as provided
in Section 11.1(a) (other than Section 11.1(a)(ii)), unless a successor is
elected and an Opinion of Counsel is received as provided in Section 11.1(b) or
11.2 and such successor is admitted to the Partnership pursuant to Section 10.4;

               (c)    an election to dissolve the Partnership by the General
Partner that is approved by all of the Limited Partners;

               (d)    the entry of a decree of judicial dissolution of the
Partnership pursuant to the provisions of the Delaware Act;

               (e)    the sale of all or substantially all of the assets and
properties of the Partnership Group; or

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               (f)    the dissolution of the MLP.

SECTION 12.2   CONTINUATION OF THE BUSINESS OF THE PARTNERSHIP AFTER
DISSOLUTION.

        Upon (a) dissolution of the Partnership following an Event of Withdrawal
caused by the withdrawal or removal of the General Partner as provided in
Section 11.1(a)(i) or (iii) and the failure of the Partners to select a
successor to such Departing Partner pursuant to Section 11.1 or 11.2, then
within 90 days thereafter, or (b) dissolution of the Partnership upon an event
constituting an Event of Withdrawal as defined in Section 11.1(a)(iv), (v) or
(vi) of the MLP Agreement, then, to the maximum extent permitted by law, within
180 days thereafter, all of the Limited Partners may elect to reconstitute the
Partnership and continue its business on the same terms and conditions set forth
in this Agreement by forming a new limited partnership on terms identical to
those set forth in this Agreement and having as a general partner a Person
approved by a majority in interest of the Limited Partners. In addition, upon
dissolution of the Partnership pursuant to Section 12.1(f), if the MLP is
reconstituted pursuant to Section 12.2 of the MLP Agreement, the reconstituted
MLP may, within 180 days after such event of dissolution, acting alone,
regardless of whether there are any other Limited Partners, elect to
reconstitute the Partnership in accordance with the immediately preceding
sentence. Upon any such election by the Limited Partners or the MLP, as the case
may be, all Partners shall be bound thereby and shall be deemed to have approved
same. Unless such an election is made within the applicable time period as set
forth above, the Partnership shall conduct only activities necessary to wind up
its affairs. If such an election is so made, then:

               (a)    the reconstituted Partnership shall continue unless
dissolved in accordance with this Article XII;

               (b)    if the successor General Partner is not the former General
Partner, then the interest of the former General Partner shall be purchased by
the successor General Partner or converted into Common Units as provided in the
MLP Agreement; and

               (c)    all necessary steps shall be taken to cancel this
Agreement and the Certificate of Limited Partnership and to enter into and, as
necessary, to file, a new partnership agreement and certificate of limited
partnership, and the successor General Partner may for this purpose exercise the
power of attorney granted the General Partner pursuant to Section 2.6; PROVIDED,
that the right to approve a successor General Partner and to reconstitute and to
continue the business of the Partnership shall not exist and may not be
exercised unless the Partnership has received an Opinion of Counsel that (x) the
exercise of the right would not result in the loss of limited liability of the
Limited Partners or any limited partner of the MLP and (y) neither the
Partnership, the reconstituted limited partnership, nor the MLP would be treated
as an association taxable as a corporation or otherwise be taxable as an entity
for federal income tax purposes upon the exercise of such right to continue.

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SECTION 12.3   LIQUIDATOR.

        Upon dissolution of the Partnership, unless the Partnership is continued
under an election to reconstitute and continue the Partnership pursuant to
Section 12.2, the General Partner shall select one or more Persons to act as
Liquidator. The Liquidator (if other than the General Partner) shall be entitled
to receive such compensation for its services as may be approved by a majority
of the Limited Partners. The Liquidator (if other than the General Partner)
shall agree not to resign at any time without 15 days' prior notice and may be
removed at any time, with or without cause, by notice of removal approved by a
majority in interest of the Limited Partners. Upon dissolution, removal or
resignation of the Liquidator, a successor and substitute Liquidator (who shall
have and succeed to all rights, powers and duties of the original Liquidator)
shall within 30 days thereafter be approved by at least a majority in interest
of the Limited Partners. The right to approve a successor or substitute
Liquidator in the manner provided herein shall be deemed to refer also to any
such successor or substitute Liquidator approved in the manner herein provided.
Except as expressly provided in this Article XII, the Liquidator approved in the
manner provided herein shall have and may exercise, without further
authorization or consent of any of the parties hereto, all of the powers
conferred upon the General Partner under the terms of this Agreement (but
subject to all of the applicable limitations, contractual and otherwise, upon
the exercise of such powers, other than the limitation on sale set forth in
Section 7.3(b)) to the extent necessary or desirable in the good faith judgment
of the Liquidator to carry out the duties and functions of the Liquidator
hereunder for and during such period of time as shall be reasonably required in
the good faith judgment of the Liquidator to complete the winding up and
liquidation of the Partnership as provided for herein.

SECTION 12.4   LIQUIDATION.

        The Liquidator shall proceed to dispose of the assets of the
Partnership, discharge its liabilities, and otherwise wind up its affairs in
such manner and over such period as the Liquidator determines to be in the best
interest of the Partners, subject to Section 17-804 of the Delaware Act and the
following:

               (a)    DISPOSITION OF ASSETS. The assets may be disposed of by
public or private sale or by distribution in kind to one or more Partners on
such terms as the Liquidator and such Partner or Partners may agree. If any
property is distributed in kind, the Partner receiving the property shall be
deemed for purposes of Section 12.4(c) to have received cash equal to its fair
market value; and contemporaneously therewith, appropriate cash distributions
must be made to the other Partners. The Liquidator may, in its absolute
discretion, defer liquidation or distribution of the Partnership's assets for a
reasonable time if it determines that an immediate sale or distribution of all
or some of the Partnership's assets would be impractical or would cause undue
loss to the Partners. The Liquidator may, in its absolute discretion, distribute
the Partnership's assets, in whole or in part, in kind if it determines that a
sale would be impractical or would cause undue loss to the Partners.

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               (b)    DISCHARGE OF LIABILITIES. Liabilities of the Partnership
include amounts owed to the Liquidator as compensation for serving in such
capacity (subject to the terms of Section 12.3) and amounts owed to Partners
otherwise than in respect of their distribution rights under Article VI. With
respect to any liability that is contingent, conditional or unmatured or is
otherwise not yet due and payable, the Liquidator shall either settle such claim
for such amount as it thinks appropriate or establish a reserve of cash or other
assets to provide for its payment. When paid, any unused portion of the reserve
shall be distributed as additional liquidation proceeds.

               (c)    LIQUIDATION DISTRIBUTIONS. All property and all cash in
excess of that required to discharge liabilities as provided in Section 12.4(b)
shall be distributed to the Partners in accordance with, and to the extent of,
the positive balances in their respective Capital Accounts, as determined after
taking into account all Capital Account adjustments (other than those made by
reason of distributions pursuant to this Section 12.4(c)) for the taxable year
of the Partnership during which the liquidation of the Partnership occurs (with
such date of occurrence being determined pursuant to Treasury Regulation Section
1.704-1(b)(2)(ii)(g)), and such distribution shall be made by the end of such
taxable year (or, if later, within 90 days after said date of such occurrence).

SECTION 12.5   CANCELLATION OF CERTIFICATE OF LIMITED PARTNERSHIP.

        Upon the completion of the distribution of Partnership cash and property
as provided in Section 12.4 in connection with the liquidation of the
Partnership, the Partnership shall be terminated and the Certificate of Limited
Partnership, and all qualifications of the Partnership as a foreign limited
partnership in jurisdictions other than the State of Delaware, shall be canceled
and such other actions as may be necessary to terminate the Partnership shall be
taken.

SECTION 12.6   RETURN OF CONTRIBUTIONS.

        No General Partner shall be personally liable for, and shall have no
obligation to contribute or loan any monies or property to the Partnership to
enable it to effectuate, the return of the Capital Contributions of the Limited
Partners, or any portion thereof, it being expressly understood that any such
return shall be made solely from Partnership assets.

SECTION 12.7   WAIVER OF PARTITION.

        To the maximum extent permitted by law, each Partner hereby waives any
right to partition of the Partnership property.

SECTION 12.8   CAPITAL ACCOUNT RESTORATION.

        No Limited Partner shall have any obligation to restore any negative
balance in its Capital Account upon liquidation of the Partnership. Each General
Partner shall be obligated to restore

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any negative balance in its Capital Account upon liquidation of its interest in
the Partnership by the end of the taxable year of the Partnership during which
such liquidation occurs, or, if later, within 90 days after the date of such
liquidation.

                                  ARTICLE XIII
                       AMENDMENT OF PARTNERSHIP AGREEMENT

SECTION 13.1   AMENDMENT TO BE ADOPTED SOLELY BY THE GENERAL PARTNER.

        Each Partner agrees that the General Partner, without the approval of
any Partner or Assignee, may amend any provision of this Agreement and execute,
swear to, acknowledge, deliver, file and record whatever documents may be
required in connection therewith, to reflect:

               (a)    a change in the name of the Partnership, the location of
the principal place of business of the Partnership, the registered agent of the
Partnership or the registered office of the Partnership;

               (b)    admission, substitution, withdrawal or removal of Partners
in accordance with this Agreement;

               (c)    a change that, in the sole discretion of the General
Partner, is necessary or advisable to qualify or continue the qualification of
the Partnership as a limited partnership or a partnership in which the Limited
Partners have limited liability under the laws of any state or to ensure that no
Group Member will be treated as an association taxable as a corporation or
otherwise taxed as an entity for federal income tax purposes;

               (d)    a change that, in the discretion of the General Partner,
(i) does not adversely affect the Limited Partners (including any particular
class of Partnership Interests as compared to other classes of Partnership
Interests) in any material respect, (ii) is necessary or advisable to (A)
satisfy any requirements, conditions or guidelines contained in any opinion,
directive, order, ruling or regulation of any federal or state agency or
judicial authority or contained in any federal or state statute (including the
Delaware Act) or (B) facilitate the trading of limited partner interests of the
MLP (including the division of any class or classes of outstanding limited
partner interests of the MLP into different classes to facilitate uniformity of
tax consequences within such classes of limited partner interests of the MLP) or
comply with any rule, regulation, guideline or requirement of any National
Securities Exchange on which such limited partner interests are or will be
listed for trading, compliance with any of which the General Partner determines
in its discretion to be in the best interests of the MLP and the limited
partners of the MLP, (iii) is required to effect the intent expressed in the
Registration Statement or the intent of the provisions of this Agreement or is
otherwise contemplated by this Agreement or (iv) is required to conform the
provisions of this Agreement with the provisions of the MLP Agreement as the
provisions of the MLP Agreement may be amended, supplemented or restated from
time to time;

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               (e)    a change in the fiscal year or taxable year of the
Partnership and any changes that, in the discretion of the General Partner, are
necessary or advisable as a result of a change in the fiscal year or taxable
year of the Partnership including, if the General Partner shall so determine, a
change in the definition of "Quarter" and the dates on which distributions are
to be made by the Partnership;

               (f)    an amendment that is necessary, in the Opinion of Counsel,
to prevent the Partnership, or the General Partner or its general partner's
directors, officers, trustees or agents from in any manner being subjected to
the provisions of the Investment Company Act of 1940, as amended, the Investment
Advisers Act of 1940, as amended, or "plan asset" regulations adopted under the
Employee Retirement Income Security Act of 1974, as amended, regardless of
whether such are substantially similar to plan asset regulations currently
applied or proposed by the United States Department of Labor;

               (g)    any amendment expressly permitted in this Agreement to be
made by the General Partner acting alone;

               (h)    an amendment effected, necessitated or contemplated by a
Merger Agreement approved in accordance with Section 14.3;

               (i)    an amendment that, in the discretion of the General
Partner, is necessary or advisable to reflect, account for and deal with
appropriately the formation by the Partnership of, or investment by the
Partnership in, any corporation, partnership, joint venture, limited liability
company or other entity, in connection with the conduct by the Partnership of
activities permitted by the terms of Section 2.4;

               (j)    a merger or conveyance pursuant to Section 14.3(d); or

               (k)    any other amendments substantially similar to the
foregoing.

SECTION 13.2   AMENDMENT PROCEDURES.

        Except with respect to amendments of the type described in Section 13.1,
all amendments to this Agreement shall be made in accordance with the following
requirements: Amendments to this Agreement may be proposed only by or with the
consent of the General Partner, which consent may be given or withheld in its
sole discretion. A proposed amendment shall be effective upon its approval by
the Limited Partner.

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                                   ARTICLE XIV
                                     MERGER

SECTION 14.1   AUTHORITY.

        The Partnership may merge or consolidate with one or more corporations,
limited liability companies, business trusts or associations, real estate
investment trusts, common law trusts or unincorporated businesses, including a
general partnership or limited partnership, formed under the laws of the State
of Delaware or any other state of the United States of America, pursuant to a
written agreement of merger or consolidation ("MERGER AGREEMENT") in accordance
with this Article XIV.

SECTION 14.2   PROCEDURE FOR MERGER OR CONSOLIDATION.

        Merger or consolidation of the Partnership pursuant to this Article XIV
requires the prior approval of the General Partner. If the General Partner shall
determine, in the exercise of its discretion, to consent to the merger or
consolidation, the General Partner shall approve the Merger Agreement, which
shall set forth:

               (a)    The names and jurisdictions of formation or organization
of each of the business entities proposing to merge or consolidate;

               (b)    The name and jurisdiction of formation or organization of
the business entity that is to survive the proposed merger or consolidation (the
"SURVIVING BUSINESS ENTITY");

               (c)    The terms and conditions of the proposed merger or
consolidation;

               (d)    The manner and basis of exchanging or converting the
equity securities of each constituent business entity for, or into, cash,
property or general or limited partner interests, rights, securities or
obligations of the Surviving Business Entity; and (i) if any general or limited
partner interests, securities or rights of any constituent business entity are
not to be exchanged or converted solely for, or into, cash, property or general
or limited partner interests, rights, securities or obligations of the Surviving
Business Entity, the cash, property or general or limited partner interests,
rights, securities or obligations of any limited partnership, corporation, trust
or other entity (other than the Surviving Business Entity) which the holders of
such general or limited partner interests, securities or rights are to receive
in exchange for, or upon conversion of their general or limited partner
interests, securities or rights, and (ii) in the case of securities represented
by certificates, upon the surrender of such certificates, which cash, property
or general or limited partner interests, rights, securities or obligations of
the Surviving Business Entity or any general or limited partnership,
corporation, trust or other entity (other than the Surviving Business Entity),
or evidences thereof, are to be delivered;

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               (e)    A statement of any changes in the constituent documents or
the adoption of new constituent documents (the articles or certificate of
incorporation, articles of trust, declaration of trust, certificate or agreement
of limited partnership or other similar charter or governing document) of the
Surviving Business Entity to be effected by such merger or consolidation;

               (f)    The effective time of the merger, which may be the date of
the filing of the certificate of merger pursuant to Section 14.4 or a later date
specified in or determinable in accordance with the Merger Agreement (provided,
that if the effective time of the merger is to be later than the date of the
filing of the certificate of merger, the effective time shall be fixed no later
than the time of the filing of the certificate of merger and stated therein);
and

               (g)    Such other provisions with respect to the proposed merger
or consolidation as are deemed necessary or appropriate by the General Partner.

SECTION 14.3   APPROVAL BY LIMITED PARTNERS OF MERGER OR CONSOLIDATION.

               (a)    Except as provided in Section 14.3(d), the General
Partner, upon its approval of the Merger Agreement, shall direct that the Merger
Agreement be submitted to a vote of the Limited Partners, whether at a special
meeting or by written consent, in either case in accordance with the
requirements of Article XIII. A copy or a summary of the Merger Agreement shall
be included in or enclosed with the notice of a special meeting or the written
consent.

               (b)    Except as provided in Section 14.3(d), the Merger
Agreement shall be approved upon receiving the affirmative vote or consent of
the Limited Partners.

               (c)    Except as provided in Section 14.3(d), after such approval
by vote or consent of the Limited Partners, and at any time prior to the filing
of the certificate of merger pursuant to Section 14.4, the merger or
consolidation may be abandoned pursuant to provisions therefor, if any, set
forth in the Merger Agreement.

               (d)    Notwithstanding anything else contained in this Article
XIV or in this Agreement, the General Partner is permitted, in its discretion,
without Limited Partner approval, to merge the Partnership or any Group Member
into, or convey all of the Partnership's assets to, another limited liability
entity which shall be newly formed and shall have no assets, liabilities or
operations at the time of such Merger other than those it receives from the
Partnership or other Group Member if (i) the General Partner has received an
Opinion of Counsel that the merger or conveyance, as the case may be, would not
result in the loss of the limited liability of any Limited Partner, any limited
partner in the MLP or cause the Partnership or the MLP or the to be treated as
an association taxable as a corporation or otherwise to be taxed as an entity
for federal income tax purposes (to the extent not previously treated as such),
(ii) the sole purpose of such merger or conveyance is to effect a mere change in
the legal form of the Partnership into another limited

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liability entity and (iii) the governing instruments of the new entity provide
the Limited Partners and the General Partner with the same rights and
obligations as are herein contained.

SECTION 14.4   CERTIFICATE OF MERGER.

        Upon the required approval by the General Partner and the Limited
Partners of a Merger Agreement, a certificate of merger shall be executed and
filed with the Secretary of State of the State of Delaware in conformity with
the requirements of the Delaware Act.

SECTION 14.5   EFFECT OF MERGER.

               (a)    At the effective time of the certificate of merger:

               (i)    all of the rights, privileges and powers of each of the
        business entities that has merged or consolidated, and all property,
        real, personal and mixed, and all debts due to any of those business
        entities and all other things and causes of action belonging to each of
        those business entities, shall be vested in the Surviving Business
        Entity and after the merger or consolidation shall be the property of
        the Surviving Business Entity to the extent they were of each
        constituent business entity;

               (ii)   the title to any real property vested by deed or otherwise
        in any of those constituent business entities shall not revert and is
        not in any way impaired because of the merger or consolidation;

               (iii)  all rights of creditors and all liens on or security
        interests in property of any of those constituent business entities
        shall be preserved unimpaired; and

               (iv)   all debts, liabilities and duties of those constituent
        business entities shall attach to the Surviving Business Entity and may
        be enforced against it to the same extent as if the debts, liabilities
        and duties had been incurred or contracted by it.

               (b)    A merger or consolidation effected pursuant to this
Article shall not be deemed to result in a transfer or assignment of assets or
liabilities from one entity to another.

                                   ARTICLE XV
                               GENERAL PROVISIONS

SECTION 15.1   ADDRESSES AND NOTICES.

        Any notice, demand, request, report or proxy materials required or
permitted to be given or made to a Partner or Assignee under this Agreement
shall be in writing and shall be deemed given or made when delivered in person
or when sent by first class United States mail or by other means of written
communication to the Partner at the address described below. Any notice to the

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Partnership shall be deemed given if received by the General Partner at the
principal office of the Partnership designated pursuant to Section 2.3. The
General Partner may rely and shall be protected in relying on any notice or
other document from a Partner, Assignee or other Person if believed by it to be
genuine.

SECTION 15.2   FURTHER ACTION.

        The parties shall execute and deliver all documents, provide all
information and take or refrain from taking action as may be necessary or
appropriate to achieve the purposes of this Agreement.

SECTION 15.3   BINDING EFFECT.

        This Agreement shall be binding upon and inure to the benefit of the
parties hereto and their heirs, executors, administrators, successors, legal
representatives and permitted assigns.

SECTION 15.4   INTEGRATION.

        This Agreement constitutes the entire agreement among the parties hereto
pertaining to the subject matter hereof and supersedes all prior agreements and
understandings pertaining thereto.

SECTION 15.5   CREDITORS.

        None of the provisions of this Agreement shall be for the benefit of, or
shall be enforceable by, any creditor of the Partnership.

SECTION 15.6   WAIVER.

        No failure by any party to insist upon the strict performance of any
covenant, duty, agreement or condition of this Agreement or to exercise any
right or remedy consequent upon a breach thereof shall constitute waiver of any
such breach of any other covenant, duty, agreement or condition.

SECTION 15.7   COUNTERPARTS.

        This Agreement may be executed in counterparts, all of which together
shall constitute an agreement binding on all the parties hereto, notwithstanding
that all such parties are not signatories to the original or the same
counterpart. Each party shall become bound by this Agreement immediately upon
affixing its signature hereto, independently of the signature of any other
party.

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SECTION 15.8   APPLICABLE LAW.

        This Agreement shall be construed in accordance with and governed by the
laws of the State of Delaware, without regard to the principles of conflicts of
law.

SECTION 15.9   INVALIDITY OF PROVISIONS.

        If any provision of this Agreement is or becomes invalid, illegal or
unenforceable in any respect, the validity, legality and enforceability of the
remaining provisions contained herein shall not be affected thereby.

SECTION 15.10  CONSENT OF PARTNERS.

        Each Partner hereby expressly consents and agrees that, whenever in this
Agreement it is specified that an action may be taken upon the affirmative vote
or consent of less than all of the Partners, such action may be so taken upon
the concurrence of less than all of the Partners and each Partner shall be bound
by the results of such action.

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               IN WITNESS WHEREOF, the parties hereto have executed this
Agreement as of the date first written above.

                              GENERAL PARTNER:

                              RIVERWALK LOGISTICS, L.P.

                              By:  Shamrock Logistics GP, LLC
                                   its general partner

                                   By:    /s/ Steve Blank
                                          --------------------------------------
                                   Name:  Steve Blank
                                   Title: Chief Financial and Accounting Officer

                              ORGANIZATIONAL LIMITED PARTNER

                              By:  /s/ Todd Walker
                                   ---------------------------------------------
                                   Todd Walker

                              LIMITED PARTNER:

                              SHAMROCK LOGISTICS, L.P.

                              By:  Riverwalk Logistics, L.P.
                                   its General Partner

                              By:  Shamrock Logistics GP, LLC
                                   its General Partner

                                   By:    /s/ Steve Blank
                                          --------------------------------------
                                   Name:  Steve Blank
                                   Title: Chief Financial and Accounting Officer

                                             SHAMROCK LOGISTICS OPERATIONS, L.P.

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