<PAGE>
                                                                     EXHIBIT 4.7

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                          THIRD SUPPLEMENTAL INDENTURE

                                      AMONG

                              TEPPCO PARTNERS, L.P.

                                   AS ISSUER,

               TE PRODUCTS PIPELINE COMPANY, LIMITED PARTNERSHIP,

                                   TCTM, L.P.,

                        TEPPCO MIDSTREAM COMPANIES, L.P.,

                           JONAH GAS GATHERING COMPANY

                                       AND

                      VAL VERDE GAS GATHERING COMPANY, L.P.

                            AS SUBSIDIARY GUARANTORS,

                                       AND

                       WACHOVIA BANK, NATIONAL ASSOCIATION

                                   AS TRUSTEE

                                 --------------

                                JANUARY 30, 2003

                                 --------------

                          6.125% SENIOR NOTES DUE 2013

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<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<S>                                                                      <C>
ARTICLE 1 THE 2013 NOTES .............................................    2
   SECTION 1.1    Designation of the 2013 Notes; Establishment of Form    2
   SECTION 1.2    Amount .............................................    3
   SECTION 1.3    Redemption .........................................    3
   SECTION 1.4    Conversion .........................................    3
   SECTION 1.5    Maturity ...........................................    3
   SECTION 1.6    Place of Payment ...................................    3
   SECTION 1.7    Subsidiary Guarantors ..............................    3
   SECTION 1.8    Other Terms of 2013 Notes ..........................    4
ARTICLE 2 AMENDMENTS TO THE INDENTURE ................................    4
   SECTION 2.1    Definitions ........................................    4
   SECTION 2.2    Redemption .........................................    8
   SECTION 2.3    Covenants ..........................................    9
   SECTION 2.4    Events of Default ..................................   10
   SECTION 2.5    Administration of Trust ............................   10
ARTICLE 3 VAL VERDE GUARANTEE ........................................   11
   SECTION 3.1    Val Verde Guarantee ................................   11
ARTICLE 4 MISCELLANEOUS PROVISIONS ...................................   11
   SECTION 4.1    Integral Part ......................................   11
   SECTION 4.2    General Definitions ................................   11
   SECTION 4.3    Adoption, Ratification and Confirmation ............   11
   SECTION 4.4    Counterparts .......................................   11
   SECTION 4.5    Governing Law ......................................   11

EXHIBIT A         FORM OF 2013 NOTE ..................................   A-1
</TABLE>


                                       i
<PAGE>

                          THIRD SUPPLEMENTAL INDENTURE

      THIS THIRD SUPPLEMENTAL INDENTURE, dated as of January 30, 2003 (this
"Third Supplemental Indenture"), among TEPPCO Partners, L.P., a Delaware limited
partnership (the "Partnership"), TE Products Pipeline Company, Limited
Partnership, a Delaware limited partnership ("TE Products"), TCTM, L.P., a
Delaware limited partnership ("TCTM"), TEPPCO Midstream Companies, L.P., a
Delaware limited partnership ("TEPPCO Midstream"), Jonah Gas Gathering Company,
a Wyoming general partnership ("Jonah"), Val Verde Gas Gathering Company, L.P.,
a Delaware limited partnership ("Val Verde" and together with TE Products, TCTM,
TEPPCO Midstream and Jonah, the "Subsidiary Guarantors"), and Wachovia Bank,
National Association, a national banking association, as trustee (the
"Trustee").

                              W I T N E S S E T H:

      WHEREAS, TE Products, TCTM, TEPPCO Midstream and Jonah (collectively, the
"Original Subsidiary Guarantors") and the Partnership have heretofore executed
and delivered to the Trustee an Indenture dated as of February 20, 2002 (the
"Original Indenture" and, as amended and supplemented by this Third Supplemental
Indenture, the "Indenture"), providing for the issuance from time to time of one
or more series of the Partnership's Debt Securities, and the Guarantee by each
of the Subsidiary Guarantors (as defined therein) of the Debt Securities;

      WHEREAS, pursuant to Original Indenture, as amended and supplemented by
the First Supplemental Indenture dated as of February 20, 2002 among the
Partnership, the Original Subsidiary Guarantors and the Trustee, the Partnership
issued $500,000,000 aggregate principal amount of its 7.625% Senior Notes due
2012 (the "2012 Notes");

      WHEREAS, Sections 2.01 and 2.03 of the Indenture provide that, without the
approval of any Holder, the Partnership and the Subsidiary Guarantors may enter
into supplemental indentures to establish the form, terms and provisions of a
series of Debt Securities issued pursuant to the Indenture;

      WHEREAS, Section 9.01(k) of the Indenture provides that the Partnership
and the Subsidiary Guarantors and the Trustee may from time to time enter into
one or more indentures supplemental thereto, without the consent of any Holders,
to establish the form or terms of Debt Securities of a new series;

      WHEREAS, Section 9.01(b) of the Indenture permits the execution of
supplemental indentures without the consent of any Holders to add to the
covenants of the Partnership or the Subsidiary Guarantors for the benefit of,
and to add any additional Events of Default with respect to, all or any series
of Debt Securities;

      WHEREAS, Section 9.01(i) of the Indenture permits the execution of
supplemental indentures without the consent of any Holders to add to, change or
eliminate any of the provisions of the Indenture with respect to all or any
series of Debt Securities, provided that, among other things, such addition,
change or elimination does not apply to any outstanding Debt Security of any
series created prior to the execution of such supplemental indenture;

      WHEREAS, Section 9.01(i) of the Indenture permits the execution of
supplemental indentures without the consent of any Holders to add Subsidiary
Guarantors with respect to any or all of the Debt Securities;


                                     - 1 -
<PAGE>

      WHEREAS, the Partnership desires to issue a series of its Debt Securities
under the Indenture, such series to be known as its 6.125% Senior Notes due 2013
(the "2013 Notes"), the issuance of which series was authorized by or pursuant
to resolution of the Board of Directors, and the Subsidiary Guarantors desire to
Guarantee the 2013 Notes as provided in Article XIV of the Indenture;

      WHEREAS, the Partnership, pursuant to the foregoing authority, proposes in
and by this Third Supplemental Indenture to supplement and amend the Original
Indenture insofar as it will apply only to the 2013 Notes;

      WHEREAS, Val Verde is executing and delivering this Third Supplemental
Indenture for the purpose of providing a Guarantee of the 2013 Notes, in
accordance with the provisions of the Original Indenture;

      WHEREAS, all things necessary have been done to make the 2013 Notes, when
duly issued by the Partnership and when executed on behalf of the Partnership
and authenticated and delivered in accordance with the Indenture, the valid
obligations of the Partnership, to make the Guarantee of the 2013 Notes the
valid obligation of each of the Subsidiary Guarantors, and to make this Third
Supplemental Indenture a valid agreement of the Partnership and the Subsidiary
Guarantors, in accordance with their and its terms;

      NOW, THEREFORE:

      In consideration of the premises provided for herein, the Partnership, the
Subsidiary Guarantors and the Trustee mutually covenant and agree for the equal
and proportionate benefit of all Holders of the 2013 Notes as follows:

                                   ARTICLE 1

                                 THE 2013 NOTES

      SECTION 1.1 Designation of the 2013 Notes; Establishment of Form.

      There shall be a series of Debt Securities designated "6.125% Senior Notes
due 2013" of the Partnership (the "2013 Notes"), and the form thereof (including
the notation of Guarantee thereof) shall be substantially as set forth in
Exhibit A hereto, which is incorporated into and shall be deemed a part of this
Third Supplemental Indenture, in each case with such appropriate insertions,
omissions, substitutions and other variations as are required or permitted by
the Indenture, and may have such letters, numbers or other marks of
identification and such legends or endorsements placed thereon as the
Partnership may deem appropriate or as may be required or appropriate to comply
with any laws or with any rules made pursuant thereto or with the rules of any
securities exchange on which the 2013 Notes may be listed, or to conform to
general usage, or as may, consistently with the Indenture, be determined by the
officers executing such 2013 Notes, as evidenced by their execution of the 2013
Notes.

      The 2013 Notes will initially be issued in permanent global form,
substantially in the form set forth in Exhibit A hereto, as a Global Security.

      The Partnership initially appoints the Trustee to act as paying agent and
Registrar with respect to the 2013 Notes.


                                     - 2 -
<PAGE>

      SECTION 1.2 Amount.

      The Trustee shall authenticate and deliver 2013 Notes for original issue
in an aggregate principal amount of up to $200,000,000 upon Partnership Order
for the authentication and delivery of 2013 Notes. The authorized aggregate
principal amount of 2013 Notes may be increased at any time hereafter and the
series may be reopened for issuances of additional 2013 Notes, upon Partnership
Order without the consent of any Holder. The 2013 Notes issued on the date
hereof and any such additional 2013 Notes that may be issued hereafter shall be
part of the same series of Debt Securities.

      SECTION 1.3 Redemption.

            (a) There shall be no sinking fund for the retirement of the 2013
      Notes or other mandatory redemption obligation.

            (b) The Partnership, at its option, may redeem the 2013 Notes in
      accordance with the provisions of the 2013 Notes and the Indenture.

      SECTION 1.4 Conversion.

      The 2013 Notes shall not be convertible into any other securities.

      SECTION 1.5 Maturity.

      The Stated Maturity of the 2013 Notes shall be February 1, 2013.

      SECTION 1.6 Place of Payment.

      As long as any 2013 Notes are Outstanding, the Partnership shall maintain
in the Borough of Manhattan, The City of New York, an office or agency where the
2013 Notes may be surrendered for registration of transfer or for exchange, an
office or agency where the 2013 Notes may be presented for payment, and an
office or agency where notices and demands to or upon the Partnership in respect
of the 2013 Notes and the Indenture may be served. All of such offices or
agencies shall initially be the corporate trust office of the Trustee in the
Borough of Manhattan, The City of New York, which on the date of this Third
Supplemental Indenture, is located at 40 Broad Street, 5th Floor, New York, New
York 10004. The Partnership may also from time to time designate one or more
other offices or agencies where the 2013 Notes may be presented or surrendered
for any or all such purposes and may from time to time rescind such
designations; provided, however, that no such designation or rescission shall in
any manner relieve the Partnership of its obligation to maintain an office or
agency in the Borough of Manhattan, The City of New York, for such purposes.

      SECTION 1.7 Subsidiary Guarantors.

      The 2013 Notes shall be entitled to the benefits of the Guarantee of each
of the Subsidiary Guarantors as provided in Article XIV of the Indenture.


                                     - 3 -
<PAGE>

      SECTION 1.8 Other Terms of 2013 Notes.

      Without limiting the foregoing provisions of this Article 1, the terms of
the 2013 Notes shall be as provided in the form of 2013 Notes set forth in
Exhibit A hereto and as provided in the Indenture.

                                   ARTICLE 2

                           AMENDMENTS TO THE INDENTURE

      The amendments and supplements contained herein shall apply to 2013 Notes
only and not to any other series of Debt Securities issued under the Indenture
and any covenants provided herein are expressly being included solely for the
benefit of the 2013 Notes. These amendments and supplements shall be effective
for so long as there remains any 2013 Notes outstanding.

      SECTION 2.1 Definitions.

      Section 1.01 of the Original Indenture is amended and supplemented by
inserting or restating, as the case may be, in their appropriate alphabetical
position, the following definitions:

      "Attributable Indebtedness" means with respect to a Sale-Leaseback
Transaction, at the time of determination, the lesser of:

            (a) the fair market value (as determined in good faith by the Board
      of Directors) of the assets involved in the Sale-Leaseback Transaction;

            (b) the present value of the total net amount of rent required to be
      paid under the lease involved in such Sale-Leaseback Transaction during
      the remaining term thereof (including any renewal term exercisable at the
      lessee's option or period for which such lease has been extended),
      discounted at the rate of interest set forth or implicit in the terms of
      such lease or, if not practicable to determine such rate, the weighted
      average interest rate per annum borne by the 2013 Notes compounded
      semiannually; and

            (c) if the obligation with respect to the Sale-Leaseback Transaction
      constitutes an obligation that is required to be classified and accounted
      for as a Capital Lease Obligation for financial reporting purposes in
      accordance with GAAP, the amount equal to the capitalized amount of such
      obligation determined in accordance with GAAP and included in the
      financial statements of the lessee.

For purposes of the foregoing definition, rent will not include amounts required
to be paid by the lessee, whether or not designated as rent or additional rent,
on account of or contingent upon maintenance and repairs, insurance, taxes,
assessments, utilities, water rates, operating charges, labor costs and similar
charges. In the case of any lease that is terminable by the lessee upon the
payment of a penalty, such net amount shall be the lesser of the net amount
determined assuming termination upon the first date such lease may be terminated
(in which case the net amount shall also include the amount of the penalty, but
no rent shall be considered as required to be paid under such lease subsequent
to the first date upon which it may be so terminated) or the net amount
determined assuming no such termination.


                                     - 4 -
<PAGE>

      "Capital Lease Obligation" means, at the time any determination thereof is
to be made, the amount of the liability in respect of a capital lease that would
at such time be required to be capitalized on a balance sheet in accordance with
GAAP.

      "Consolidated Net Tangible Assets" means, at any date of determination,
the aggregate amount of total assets included in the most recent consolidated
quarterly or annual balance sheet of the Partnership prepared in accordance with
GAAP, less applicable reserves reflected in such balance sheet, after deducting
the following amounts:

            (a) all current liabilities reflected in such balance sheet
      (excluding any current maturities of long-term debt or any current
      liabilities that by their terms are extendable or renewable at the option
      of the obligor to a time more than 12 months after the time as of which
      the amount is being computed); and

            (b) all goodwill, trade names, trademarks, patents, unamortized debt
      discount and expense and other like intangibles reflected in such balance
      sheet.

      "Funded Debt" means all Debt maturing one year or more from the date of
the incurrence, creation, assumption or guarantee thereof, all Debt directly or
indirectly renewable or extendible, at the option of the debtor, by its terms or
by the terms of the instrument or agreement relating thereto, to a date one year
or more from the date of the incurrence, creation, assumption or guarantee
thereof, and all Debt under a revolving credit or similar agreement obligating
the lender or lenders to extend credit over a period of one year or more.

      "Permitted Liens" include:

            (a) Liens existing at, or provided for under the terms of an
      "after-acquired property" clause or similar term of any agreement existing
      on the date of, the initial issuance of the 2013 Notes or the terms of any
      mortgage, pledge agreement or similar agreement existing on such date of
      initial issuance;

            (b) Liens on property, shares of stock, indebtedness or other assets
      of any Person (which is not a Subsidiary of the Partnership) existing at
      the time such Person becomes a Subsidiary of the Partnership or is merged
      into or consolidated with or into the Partnership or any of its
      Subsidiaries (whether or not the obligations secured thereby are assumed
      by the Partnership or any of its Subsidiaries), provided that such Liens
      are not incurred in anticipation of such Person becoming a Subsidiary of
      the Partnership, or Liens existing at the time of a sale, lease or other
      disposition of the properties of a Person as an entirety or substantially
      as an entirety to the Partnership or any of its Subsidiaries;

            (c) Liens on property, shares of stock, indebtedness or other assets
      existing at the time of acquisition thereof by the Partnership or any of
      its Subsidiaries (whether or not the obligations secured thereby are
      assumed by the Partnership or any of its Subsidiaries), or Liens thereon
      to secure the payment of all or any part of the purchase price thereof;

            (d) any Lien on property, shares of capital stock, indebtedness or
      other assets created at the time of the acquisition of same by the
      Partnership or any of its Subsidiaries or within 12 months after such
      acquisition to secure all or a portion of the purchase price of such
      property, capital stock, indebtedness or other assets or indebtedness
      incurred to finance such purchase price, whether such indebtedness is
      incurred prior to, at the time of or within one year after the date of
      such acquisition;


                                     - 5 -
<PAGE>

            (e) Liens on property, shares of stock, indebtedness or other assets
      to secure any Debt incurred to pay the costs of construction, development,
      repair or improvements thereon, or incurred prior to, at the time of, or
      within 12 months after, the latest of the completion of construction, the
      completion of development, repair or improvements or the commencement of
      full commercial operation of such property for the purpose of financing
      all or any part of, such construction or the making of such development,
      repair or improvements;

            (f) Liens to secure indebtedness owing to the Partnership or any of
      its Subsidiaries;

            (g) Liens on any current assets that secure current liabilities or
      indebtedness incurred by the Partnership or any of its Subsidiaries;

            (h) Liens in favor of the United States of America or any state,
      territory or possession thereof (or the District of Columbia), or any
      department, agency, instrumentality or political subdivision of the United
      States of America or any state, territory or possession thereof (or the
      District of Columbia), to secure partial, progress, advance or other
      payments pursuant to any contract or statute or to secure any indebtedness
      incurred for the purpose of financing all or any part of the purchase
      price or the cost of constructing, developing, repairing or improving the
      property subject to such liens;

            (i) Liens arising or imposed by reason of any attachment, judgment,
      decree or order of any regulatory, governmental or court authority or
      proceeding, so long as any proceeding initiated to review same shall not
      have been terminated or the period within which such proceeding may be
      initiated shall not have expired, or such attachment, judgment, decree or
      order shall otherwise be effectively stayed;

            (j) Liens on any capital stock of any Subsidiary of the Partnership
      that owns an equity interest in a joint venture to secure indebtedness,
      provided that the proceeds of such indebtedness received by such
      Subsidiary are contributed or advanced to such joint venture;

            (k) the assumption by the Partnership or any of its Subsidiaries of
      obligations secured by any Lien on property, shares of stock, indebtedness
      or other assets, which Lien exists at the time of the acquisition by the
      Partnership or any of its Subsidiaries of such property, shares,
      indebtedness or other assets or at the time of the acquisition of the
      Person that owns such property or assets;

            (l) Liens on any property to secure bonds for the construction,
      installation or financing of pollution control or abatement facilities, or
      other forms of industrial revenue bond financing, or indebtedness issued
      or guaranteed by the United States, any state or any department, agency or
      instrumentality thereof;

            (m) Liens to secure any refinancing, refunding, extension, renewal
      or replacement (or successive refinancings, refundings, extensions,
      renewals or replacements) of any Lien referred to in clauses (a)-(l)
      above; provided, however, that any Liens permitted by the terms set forth
      under any of such clauses (a)-(l) shall not extend to or cover any


                                     - 6 -
<PAGE>

      property of the Partnership or of any of its Subsidiaries, as the case may
      be, other than the property specified in such clauses and improvements
      thereto or proceeds therefrom;

            (n) Liens deemed to exist by reason of negative pledges in respect
      of indebtedness;

            (o) Liens upon rights-of-way for pipeline purposes;

            (p) any statutory or governmental Lien or a Lien arising by
      operation of law, or any mechanics', repairmen's, materialmen's,
      supplier's, carrier's, landlord's, warehousemen's or similar Lien incurred
      in the ordinary course of business which is not yet due or is being
      contested in good faith by appropriate proceedings and any undetermined
      Lien which is incidental to construction, development, improvement or
      repair;

            (q) the right reserved to, or vested in, any municipality or public
      authority by the terms of any right, power, franchise, license, permit or
      by any provision of law, to purchase or to recapture or to designate a
      purchaser of, any property;

            (r) Liens of taxes and assessments which are for the current year,
      and are not at the time delinquent or are delinquent but the validity of
      which are being contested at the time by the Partnership or any of its
      Subsidiaries in good faith;

            (s) Liens of, or to secure the performance of, leases;

            (t) Liens upon, or deposits of, any assets in favor of any surety
      company or clerk of court for the purpose of obtaining indemnity or stay
      of judicial proceedings;

            (u) Liens upon property or assets acquired or sold by the
      Partnership or any of its Subsidiaries resulting from the exercise of any
      rights arising out of defaults on receivables;

            (v) Liens incurred in the ordinary course of business in connection
      with workmen's compensation, unemployment insurance, temporary disability,
      social security, retiree health or similar laws or regulations or to
      secure obligations imposed by statute or governmental regulations;

            (w) Liens securing indebtedness of the Partnership or indebtedness
      of any Subsidiaries of the Partnership, all or a portion of the net
      proceeds of which are used, substantially concurrently with the funding
      thereof (and for purposes of determining "substantial concurrence," taking
      into consideration, among other things, required notices to be given to
      Holders of Outstanding Debt Securities under this Indenture (including the
      2013 Notes) in connection with such refunding, refinancing, repurchase,
      and the required durations thereof), to refund, refinance, or repurchase
      all Outstanding Debt Securities under this Indenture (including the 2013
      Notes) including all accrued interest thereon and reasonable fees and
      expenses and any premium incurred by the Partnership or its Subsidiaries
      in connection therewith; and

            (x) any Lien upon any property, shares of capital stock,
      indebtedness or other assets to secure indebtedness incurred by the
      Partnership or any of its Subsidiaries, the proceeds of which, in whole or
      in part, are used to defease, in a legal or a covenant


                                     - 7 -
<PAGE>

      defeasance, the obligations of the Partnership on the 2013 Notes or any
      other series of Debt Securities.

      "Principal Property" means, whether owned or leased on the date of the
initial issuance of the 2013 Notes or acquired later:

            (a) pipeline assets of the Partnership or any of its Subsidiaries,
      including any related facilities employed in the gathering,
      transportation, distribution, storage or marketing of natural gas, natural
      gas liquids, refined petroleum products, liquefied petroleum gases, crude
      oil or petrochemicals, that are located in the United States of America or
      any territory or political subdivision thereof; and

            (b) any processing or manufacturing plant or terminal owned or
      leased by the Partnership or any of its Subsidiaries that is located in
      the United States of America or any territory or political subdivision
      thereof; except, in the case of either of the foregoing clauses (a) and
      (b), any such assets consisting of inventories, furniture, office fixtures
      and equipment (including data processing equipment), vehicles and
      equipment used on, or useful with, vehicles, and any such assets, plant or
      terminal which, in the opinion of the Board of Directors, is not material
      in relation to the activities of the Partnership or of the Partnership and
      its Subsidiaries, taken as a whole.

      "Sale-Leaseback Transaction" means any arrangement with any Person
providing for the leasing by the Partnership or any of its Subsidiaries of any
Principal Property, which Principal Property has been or is to be sold or
transferred by the Partnership or such Subsidiary to such Person, other than:

            (a) any such transaction involving a lease for a term (including
      renewals or extensions exercisable by the Partnership or any of its
      Subsidiaries) of not more than three years; or

            (b) any such transaction between the Partnership and any of its
      Subsidiaries or between any of its Subsidiaries.

      "2013 Notes" means the 6.125% Senior Notes due 2013 of the Partnership to
be issued pursuant to this Indenture. For purposes of this Indenture, the term
"2013 Notes" shall, except where the context otherwise requires, include the
Guarantee.

      SECTION 2.2 Redemption.

      Article III of the Original Indenture shall be amended and supplemented by
inserting the following new section in its entirety:

      "Section 3.06. Optional Redemption.

      The 2013 Notes may be redeemed at the option of the Partnership at any
time and from time to time at the redemption prices described in the 2013 Notes.
Any notice to Holders of 2013 Notes of such redemption shall include the
appropriate calculation of the redemption price, but need not include the
redemption price itself. The actual redemption price, calculated as provided in
the 2013 Notes, shall be set forth in an Officers' Certificate delivered to the
Trustee no later than two Business Days prior to the redemption date."


                                     - 8 -
<PAGE>

      SECTION 2.3 Covenants.

      Article IV of the Original Indenture shall be amended and supplemented by
inserting the following new sections in their entirety:

      "Section 4.12. Limitation on Sale-Leaseback Transactions. The Partnership
shall not, and shall not permit any of its Subsidiaries to, enter into any
Sale-Leaseback Transaction unless:

            (a) such Sale-Leaseback Transaction occurs within 12 months from the
      date of completion of the acquisition of the Principal Property subject
      thereto or the date of the completion of construction, or development of,
      or substantial repair or improvement on, or commencement of full
      operations of, such Principal Property, whichever is later;

            (b) the Partnership or such Subsidiary, as the case may be, would be
      permitted, pursuant to the provisions of this Indenture, to incur Debt, in
      a principal amount equal to the Attributable Indebtedness with respect to
      such Sale-Leaseback Transaction, secured by a Lien on the Principal
      Property subject to such Sale-Leaseback Transaction pursuant to Section
      4.13 without equally and ratably securing the 2013 Notes pursuant to such
      Section; or

            (c) the Partnership or such Subsidiary, within a twelve-month period
      after the effective date of such Sale-Leaseback Transaction, applies or
      causes to be applied an amount equal to not less than the Attributable
      Indebtedness from such Sale-Leaseback Transaction either to (a) the
      voluntary defeasance or the prepayment, repayment, redemption or
      retirement of any 2013 Notes or other Funded Debt of the Partnership or
      any Subsidiary that is not subordinated to the Debt Securities, (b) the
      acquisition, construction, development or improvement of any Principal
      Property used or useful in the businesses of the Partnership (including
      the businesses of its Subsidiaries) or (c) any combination of applications
      referred to in the preceding clause (a) or (b).

      Notwithstanding the foregoing provisions of this Section, the Partnership
may, and may permit any Subsidiary to, effect any Sale-Leaseback Transaction
that is not excepted by clauses (a) through (c), inclusive, of this Section,
provided that the Attributable Indebtedness from such Sale-Leaseback
Transaction, together with the aggregate principal amount of (i) all other
Attributable Indebtedness deemed to be outstanding in respect of all
Sale-Leaseback Transactions (exclusive of any such Sale-Leaseback Transactions
otherwise permitted under clauses (a) and (c) of this Section) and (ii) all
outstanding Debt secured by Liens other than Permitted Liens on any Principal
Property or upon any shares of capital stock or indebtedness of any Subsidiary
owning or leasing any Principal Property, does not exceed 10% of Consolidated
Net Tangible Assets.

      Section 4.13. Limitation on Liens. The Partnership shall not, and shall
not permit any of its Subsidiaries to, incur, issue, create, assume or guarantee
any Lien, other than a Permitted Lien, on any Principal Property or upon any
shares of capital stock or indebtedness of any Subsidiary owning or leasing any
Principal Property, whether now existing or hereafter created or acquired by the
Partnership or such Subsidiary, to secure any Debt of the Partnership or any
other Person, without in any such case making effective provision whereby any
and all 2013 Notes then Outstanding will be secured by a Lien equally and
ratably with, or prior to, such Debt for so long as such Debt shall be so
secured. Notwithstanding the foregoing, the Partnership may, and may permit any
Subsidiary to, incur, issue, create, assume or guarantee any Lien (other


                                     - 9 -
<PAGE>

than a Permitted Lien) on any Principal Property or upon any shares of capital
stock or indebtedness of any Subsidiary owning or leasing any Principal Property
to secure Debt of the Partnership or any other Person, without securing the 2013
Notes as provided in this Section, provided that the aggregate principal amount
of all Debt then outstanding secured by any such Lien together with the
aggregate amount of Attributable Indebtedness deemed to be outstanding in
respect of all Sale-Leaseback Transactions (exclusive of any such Sale-Leaseback
Transactions otherwise permitted under clauses (a) and (c) of Section 4.12),
does not exceed 10% of Consolidated Net Tangible Assets.

      Section 4.14. Additional Subsidiary Guarantors. If at any time after the
original issuance of the 2013 Notes, including following any release of a
Subsidiary Guarantor from its Guarantee under this Indenture, any Subsidiary of
the Partnership (including any future Subsidiary of the Partnership) guarantees
any Funded Debt of the Partnership, then the Partnership shall cause such
Subsidiary to guarantee the 2013 Notes and in connection with such guarantee, to
execute and deliver an Indenture supplemental hereto pursuant to Section 9.01(g)
simultaneously therewith. In order to further evidence its Guarantee, such
Subsidiary shall execute and deliver to the Trustee a notation relating to such
Guarantee in accordance with Section 14.02."

      SECTION 2.4 Events of Default.

      The following additional Event of Default shall be added to those in
clauses (a)-(g) of Section 6.01 of the Original Indenture in relation to the
2013 Notes:

      "(h) default in the payment by the Partnership or any of its Subsidiaries
at the Stated Maturity thereof, after the expiration of any applicable grace
period, of any principal of any Debt of the Partnership (other than the 2013
Notes) or any of its Subsidiaries (other than the Guarantee of the 2013 Notes)
outstanding in an aggregate principal amount in excess of $50,000,000, or the
occurrence of any other default thereunder (including, without limitation, the
failure to pay interest or any premium), the effect of which default is to cause
such Debt to become, or to be declared, due prior to its Stated Maturity and
such acceleration is not rescinded within 60 days after there has been given, by
registered or certified mail, to the Partnership and the Subsidiary Guarantors
by the Trustee or to the Partnership, the Subsidiary Guarantors and the Trustee
by the Holders of at least 25% in principal amount of the Outstanding 2013 Notes
a written notice specifying such default and requiring it to be remedied and
stating that such notice is a "Notice of Default" hereunder, and the receipt by
the Partnership and the Subsidiary Guarantors of such written notice."

      SECTION 2.5 Administration of Trust.

      Article VII of the Original Indenture shall be amended and supplemented by
inserting the following new section in its entirety:

      "Section 7.13. Administration of Trust.

      The Trustee shall administer the trust of the Indenture and shall perform
a substantial part of its obligations relating to the 2013 Notes and this
Indenture at its corporate trust office in The City of New York."


                                     - 10 -
<PAGE>

                                   ARTICLE 3

                               VAL VERDE GUARANTEE

      SECTION 3.1 Val Verde Guarantee.

      Val Verde hereby acknowledges and agrees that it is a Subsidiary Guarantor
with respect to the 2013 Notes and is executing and delivering this Third
Supplemental Indenture for the purpose of providing a Guarantee of the 2013
Notes, and accordingly, Val Verde's obligations as Subsidiary Guarantor of the
2013 Notes shall be governed by the Original Indenture, as amended and
supplemented by this Third Supplemental Indenture, as may be further amended and
supplemented from time to time.

                                   ARTICLE 4

                            MISCELLANEOUS PROVISIONS

      SECTION 4.1 Integral Part.

      This Third Supplemental Indenture constitutes an integral part of the
Indenture.

      SECTION 4.2 General Definitions.

      For all purposes of this Third Supplemental Indenture:

            (a) capitalized terms used herein without definition shall have the
      meanings specified in the Original Indenture; and

            (b) the terms "herein", "hereof", "hereunder" and other words of
      similar import refer to this Third Supplemental Indenture.

      SECTION 4.3 Adoption, Ratification and Confirmation.

      The Original Indenture, as supplemented and amended by this Third
Supplemental Indenture, is in all respects hereby adopted, ratified and
confirmed.

      SECTION 4.4 Counterparts.

      This Third Supplemental Indenture may be executed in any number of
counterparts, each of which when so executed shall be deemed an original; and
all such counterparts shall together constitute but one and the same instrument.

      SECTION 4.5 Governing Law.

      THIS THIRD SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.


                                     - 11 -
<PAGE>

      IN WITNESS WHEREOF, the parties hereto have caused this Third Supplemental
Indenture to be duly executed, all as of the day and year first above written.

                           TEPPCO PARTNERS, L.P.

                           By:      Texas Eastern Products Pipeline Company, LLC
                                    Its General Partner

                           By:      /s/ CHARLES H. LEONARD
                                    --------------------------------------------
                                    Charles H. Leonard
                                    Senior Vice President and Chief Financial
                                    Officer


                           TE PRODUCTS PIPELINE COMPANY,
                           LIMITED PARTNERSHIP

                           By:      TEPPCO GP, Inc.
                                    Its General Partner

                           By:      /s/ CHARLES H. LEONARD
                                    --------------------------------------------
                                    Charles H. Leonard
                                    Senior Vice President and Chief Financial
                                    Officer


                           TCTM, L.P.

                           By:      TEPPCO GP, Inc.
                                    Its General Partner

                           By:      /s/ CHARLES H. LEONARD
                                    --------------------------------------------
                                    Charles H. Leonard
                                    Senior Vice President and Chief Financial
                                    Officer


                           TEPPCO MIDSTREAM COMPANIES, L.P.

                           By:      TEPPCO GP, Inc.
                                    Its General Partner

                           By:      /s/ CHARLES H. LEONARD
                                    --------------------------------------------
                                    Charles H. Leonard
                                    Senior Vice President and Chief Financial
                                    Officer


                                     - 12 -
<PAGE>

                           JONAH GAS GATHERING COMPANY

                           By:      TEPPCO GP, Inc.
                                    Its Managing General Partner

                           By:      /s/ CHARLES H. LEONARD
                                    --------------------------------------------
                                    Charles H. Leonard
                                    Senior Vice President and Chief Financial
                                    Officer


                           VAL VERDE GAS GATHERING COMPANY, L.P.

                           By:      TEPPCO NGL Pipelines, LLC,
                                    Its General Partner

                           By:      /s/ CHARLES H. LEONARD
                                    --------------------------------------------
                                    Charles H. Leonard
                                    Senior Vice President


                           WACHOVIA BANK, NATIONAL ASSOCIATION, as Trustee

                           By:      /s/ KEVIN M. DOBRAVA
                                    --------------------------------------------
                           Name:    Kevin M. Dobrava
                           Title:   Vice President


                                     - 13 -
<PAGE>

                                                                       EXHIBIT A

                           [FORM OF FACE OF 2013 NOTE]

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), NEW YORK, NEW YORK, TO
THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND
ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER
NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS
MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.

TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT
NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR'S
NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO
TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN THE INDENTURE
REFERRED TO HEREIN.](1)

                              TEPPCO PARTNERS, L.P.
                           6.125% SENIOR NOTE DUE 2013

No. ___________                                                     $___________

                                                             CUSIP No. 872384AB8

      TEPPCO Partners, L.P., a Delaware limited partnership (herein called the
"Company," which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
______________________________ or registered assigns the principal sum of
_____________________________ Dollars on February 1, 2013 [or such greater or
lesser amount as is indicated on the Schedule of Exchanges of Securities
attached hereto](2), at the office or agency of the Company referred to below,
and to pay interest thereon, commencing on August 1, 2003 and continuing
semiannually thereafter, on February 1 and August 1 of each year, from January
30, 2003, or from the most recent Interest Payment Date to which interest has
been paid or duly provided for, at the rate of 6.125% per annum, until the
principal hereof is paid or duly provided for, and (to the extent lawful) to pay
on demand, interest on any overdue interest at the rate borne by the Securities
from the date on which such overdue interest becomes payable to the date payment
of such interest has been made or duly provided for. The interest so payable,
and punctually paid or duly provided for, on any Interest Payment Date (other
than at maturity) will, as provided in such Indenture, be paid to the Person in
whose name this Security (or one or more predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest, which
shall be the January 15 or July 15 (whether or not a Business Day), as the case
may be, next preceding such Interest Payment Date. Any such interest not so
punctually paid or duly provided for shall forthwith cease to be payable to the
Holder on such Regular Record Date and may be paid to the Person in whose name
this Security (or one or more predecessor Securities) is registered at the close
of business on a special record date for the payment of such Defaulted Interest
to be fixed by the Trustee, notice whereof shall be given to Holders of
Securities of this series not less than 10 days prior to such special record
date, or may be paid at any time in any other lawful manner not inconsistent
with the requirements of any securities exchange on which the Securities of this
series may be listed, and upon such notice as may be required by such exchange,
all as more fully provided in said Indenture. Interest on the Securities of this
series shall be computed on the basis of a 360-day year comprised of twelve
30-day months.

      Payment of the principal of, premium, if any, and interest on this
Security will be made at the corporate trust office of the Trustee in New York,
New York, or at such other office or agency of the Company in the Borough of
Manhattan, The City of New York as may be maintained for such purpose, in such
coin or currency of the United States of America as at the time of payment is
legal tender for payment of public and private debts; provided however, that
payment of interest may be made (i) at the option of the Company by check mailed
to Holders at their respective addresses as shown in the Debt Security Register
or (ii) at the option of any Holder owning Securities in the principal amount of
$500,000 or more, by wire transfer to an account maintained by the Holder
located in the United States of America, as specified in a written notice to the
Trustee (received prior to the relevant record date) by any such Holder
requesting payment by wire transfer and specifying the account to which transfer
is requested.

----------
(1)   These paragraphs should be included only if the Debt Security is a Global
      Security.

(2)   This clause should be included only if the Debt Security is a Global
      Security.


                                      A-1
<PAGE>

      Notwithstanding the foregoing, so long as this Security is registered in
the name of a Depositary or its nominee, all payments hereon shall be made by
the Company or its agent by wire transfer of immediately available funds to the
account of such Depositary or its nominee. The Holder must surrender this
Security to a paying agent to collect payment of principal.

      Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

      Unless the certificate of authentication hereon has been duly executed by
the Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture, or be valid or
obligatory for any purpose.

      IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed on its behalf by its sole General Partner.

     Dated:____________

                         TEPPCO PARTNERS, L.P.


                         By:   Texas Eastern Products Pipeline Company, LLC
                               Its General Partner


                         By:   _________________________________________________
                               Charles H. Leonard
                               Senior Vice President and Chief Financial Officer

                     TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Debt Securities of the series designated therein referred to
in the within-mentioned Indenture.

                          WACHOVIA BANK, NATIONAL ASSOCIATION,
Dated: ______________     As Trustee


                          By   _________________________________________________
                               Authorized Signatory


                                      A-2
<PAGE>

                         [FORM OF REVERSE OF 2013 NOTE]

      This Security is one of a duly authorized issue of the series of Debt
Securities of the Company designated as its 6.125% Senior Notes due 2013 (such
series being herein called the "Securities"), which is issued under, with
securities of one or more additional series that may be issued under, an
indenture dated as of February 20, 2002, among the Company, the Subsidiary
Guarantors and Wachovia Bank, National Association, as trustee (herein called
the "Trustee," which term includes any successor trustee under the Indenture),
as amended and supplemented by the Third Supplemental Indenture dated as of
January 30, 2003 (such Indenture, as so amended and supplemented, being called
the "Indenture"), to which Indenture and all future indentures supplemental
thereto reference is hereby made for a statement of the respective rights,
limitations of rights, duties, obligations and immunities thereunder of the
Company, the Subsidiary Guarantors, the Trustee and the Holders of the
Securities, and of the terms upon which the Securities are, and are to be,
authenticated and delivered.

      This Security is redeemable, in whole or in part, at any time and from
time to time, at the Company's option, upon at least 30 and not more than 60
days' prior notice as provided in the Indenture, at a redemption price equal to
the greater of (1) 100% of the principal amount of this Security then
Outstanding to be redeemed, or (2) the sum of the present values of the
remaining scheduled payments of principal and interest thereon (exclusive of
interest accrued to the redemption date) from the redemption date to February 1,
2013 computed by discounting such payments to the redemption date on a
semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at
a rate equal to the sum of 35 basis points plus the Adjusted Treasury Rate on
the third Business Day prior to the redemption date, as calculated by an
Independent Investment Banker, plus accrued and unpaid interest, up to, but not
including, the redemption date.

      For purposes of determining any redemption price, the following
definitions are applicable:

      "Adjusted Treasury Rate" means, with respect to any redemption date, the
yield, under the heading which represents the average for the immediately
preceding week, appearing in the most recently published statistical release
designated "H.15(519)" or any successor publication which is published weekly by
the Board of Governors of the Federal Reserve System and which establishes
yields on actively traded U.S. Treasury securities adjusted to constant maturity
under the caption "Treasury Constant Maturities" for the maturity corresponding
to the Optional Redemption Comparable Treasury Issue (if no maturity is within
three months before or after the remaining term of this Security, yields for the
two published maturities most closely corresponding to the Optional Redemption
Comparable Treasury Issue will be determined and the Adjusted Treasury Rate will
be interpolated or extrapolated from such yields on a straight line basis,
rounding to the nearest month); or if such release (or any successor release) is
not published during the week preceding the calculation date or does not contain
such yields, the rate per annum equal to the semiannual equivalent yield to
maturity of the Optional Redemption Comparable Treasury Issue, calculated using
a price for the Optional Redemption Comparable Treasury Issue (expressed as a
percentage of its principal amount) equal to the Optional Redemption Comparable
Treasury Price for such redemption date.

      "Independent Investment Banker" means Wachovia Securities, Inc., or if
such firm is unwilling or unable to serve as such, an independent investment
banking institution of national standing appointed by the Company.

      "Optional Redemption Reference Treasury Dealer" means each of up to five
dealers to be selected by the Company and their respective successors; provided
that if any of the foregoing ceases to be, and has no affiliate that is, a
primary U.S. governmental securities dealer (a "Primary Treasury Dealer"), the
Company will substitute for it another Primary Treasury Dealer.

      "Optional Redemption Comparable Treasury Issue" means the U.S. Treasury
security selected by an Independent Investment Banker as having a maturity
comparable to the remaining term of this Security that would be utilized, at the
time of selection and in accordance with customary financial practice, in
pricing new issues of corporate debt securities of comparable maturity to the
remaining term of this Security, or, if, in the reasonable judgment of the
Independent Investment Banker, there is no such security, then the Optional
Redemption Comparable Treasury Issue will mean the U.S. Treasury security or
securities selected by the Independent Investment Banker as having an actual or
interpolated maturity or maturities comparable to the remaining term of this
Security.

      "Optional Redemption Comparable Treasury Price" means (1) the average of
five Optional Redemption Reference Treasury Dealer Quotations for the applicable
redemption date, after excluding the highest and lowest Optional Redemption
Reference Treasury Dealer Quotations, or (2) if the Independent Investment
Banker obtains


                                      A-3
<PAGE>

fewer than five such Optional Redemption Reference Treasury Dealer Quotations,
the average of all such quotations.

      "Optional Redemption Reference Treasury Dealer Quotations" means, with
respect to each Optional Redemption Reference Treasury Dealer and any Redemption
Date for this Security, the average, as determined by the Independent Investment
Banker, of the bid and asked prices for the Optional Redemption Comparable
Treasury Issue (expressed in each case as a percentage of its principal amount)
quoted in writing to the Independent Investment Banker and the Company at 5:00
p.m., New York City time, on the third Business Day preceding such Redemption
Date.

      In the case of any redemption of Securities, interest installments whose
stated maturity is on or prior to the redemption date will be payable to the
Holders of such Securities, or one or more predecessor Securities, of record at
the close of business on the relevant record date referred to on the face
hereof. Securities (or portions thereof) for whose redemption and payment
provision is made in accordance with the Indenture shall cease to bear interest
from and after the redemption date.

      In the event of redemption of this Security in part only, a new Security
or Securities for the unredeemed portion hereof shall be issued in the name of
the Holder hereof upon the cancellation hereof.

      The Securities do not have the benefit of any sinking fund obligations.

      As set forth in the Indenture, an Event of Default with respect to the
Securities is generally: (a) failure to pay principal upon Stated Maturity,
redemption or otherwise; (b) default for 30 days in payment of interest on any
of the Securities; (c) failure for 60 days after notice to comply with any other
covenants in the Indenture or the Securities; (d) certain payment defaults
under, or the acceleration prior to the Stated Maturity of, Debt of the Company
or any Subsidiary in an aggregate principal amount in excess of $50,000,000,
unless such acceleration is rescinded within 60 days after notice to the Company
and the Subsidiary Guarantors as provided in the Indenture; (e) the Guarantee of
the Securities by any of the Subsidiary Guarantors ceases to be in full force
and effect (except as otherwise provided in the Indenture); and (f) certain
events of bankruptcy, insolvency or reorganization of the Company or any
Subsidiary Guarantor.

      If an Event of Default described in clause (f) in the preceding paragraph
occurs, then the principal amount of all Outstanding Securities, premium, if
any, and interest thereon shall ipso facto be due and payable immediately. If
any other Event of Default with respect to the Securities occurs and is
continuing, the Trustee or the holders of at least 25% in aggregate principal
amount of the Outstanding Securities may declare the principal amount of all the
Securities, premium, if any, and accrued interest thereon to be due and payable
immediately. The Indenture provides that such declaration may be rescinded in
certain events by the Holders of a majority in principal amount of the
Outstanding Securities.

      No Holder of the Securities may pursue any remedy under the Indenture
unless the Trustee shall have failed to act after notice of an Event of Default
with respect to the Securities and written request by Holders of at least 25% in
principal amount of the Outstanding Securities, and the offer to the Trustee of
indemnity reasonably satisfactory to it; however, such provision does not affect
the right to sue for enforcement of any overdue payment on a Security by the
Holder thereof. Subject to certain limitations, Holders of a majority in
principal amount of the Outstanding Securities may direct the Trustee in its
exercise of any trust or power. The Trustee may withhold from Holders notice of
any continuing default (except default in payment of principal, premium or
interest) if it determines in good faith that withholding the notice is in the
interest of the Holders. The Company is required to file a report with the
Trustee each year as to the absence or existence of defaults.

      The Company's payment obligations under the Securities are jointly and
severally guaranteed by the Subsidiary Guarantors. Any Subsidiary Guarantor may
be released from its Guarantee of the Securities under the circumstances
described in the Indenture.

      The Indenture contains provisions for defeasance at any time of (i) the
entire indebtedness of the Company and Subsidiary Guarantors on this Security
and (ii) certain Events of Default, upon compliance by the Company with certain
conditions set forth therein, which provisions apply to this Security.

      The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company or the Subsidiary Guarantors and the rights of the Holders of the


                                      A-4
<PAGE>

Securities under the Indenture at any time by the Company, the Subsidiary
Guarantors and the Trustee with the consent of the Holders of at least a
majority in aggregate principal amount of the Securities at the time
Outstanding. The Indenture also contains provisions permitting the Holders of at
least a majority in principal amount of the Securities at the time Outstanding,
on behalf of the Holders of all the Securities, to waive compliance by the
Company or the Subsidiary Guarantors with certain provisions of the Indenture
and certain past defaults under the Indenture and their consequences. Any such
consent or waiver by or on behalf of the Holder of this Security shall be
conclusive and binding upon such Holder and upon all future Holders of this
Security and of any Security issued upon the registration of transfer hereof or
in exchange herefor or in lieu hereof, whether or not notation of such consent
or waiver is made upon this Security. Without the consent of any Holder, the
Company, the Subsidiary Guarantors and the Trustee may amend or supplement the
Indenture or the Securities to cure any ambiguity, defect or inconsistency, to
make other changes that do not adversely affect the rights of any Holder and to
make certain other specified changes.

      No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of (and premium, if any, on)
and interest on this Security at the times, place, and rate, and in the coin or
currency, herein prescribed.

      As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registerable in the Debt Security
Register, upon surrender of this Security for registration of transfer at the
office or agency of the Company maintained for such purpose, duly endorsed by,
or accompanied by a written instrument of transfer in form satisfactory to the
Company and the Registrar duly executed by, the Holder hereof or his attorney
duly authorized in writing, and thereupon one or more new Securities, of
authorized denominations and for the same aggregate principal amount, will be
issued to the designated transferee or transferees.

      The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof. As provided in the
Indenture and subject to certain limitations therein set forth, the Securities
are exchangeable for a like aggregate principal amount of Securities of a
different authorized denomination, as requested by the Holder surrendering the
same.

      No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum sufficient
to cover any tax, fee, assessment or other governmental charge payable in
connection therewith.

      The General Partner and its directors, officers, employees, incorporators
and stockholders, as such, shall have no liability for any obligations of the
Subsidiary Guarantors or the Company under the Securities, the Indenture or the
Guarantee or for any claim based on, in respect of, or by reason of, such
obligations or their creation. Each Holder, by accepting this Security, waives
and releases all such liability. Such waiver and release are part of the
consideration for the issuance of this Security.

      Prior to the time of due presentment of this Security for registration of
transfer, the Company, Trustee and any agent of the Company or the Trustee may
treat the Person in whose name this Security is registered as the owner hereof
for all purposes, whether or not this Security is overdue, and neither the
Company, the Trustee nor any agent shall be affected by notice to the contrary.

      All terms used in this Security which are defined in the Indenture shall
have the meanings assigned to them in the Indenture. The Company will furnish to
any Holder upon written request and without charge a copy of the Indenture.
Requests may be made to the Company, P. O. Box 2521, Houston, Texas 77252-2521.

      Pursuant to a recommendation promulgated by the Committee on Uniform
Security Identification Procedures, the Company has caused CUSIP numbers to be
printed on the Securities as a convenience to the Holders thereof. No
representation is made as to the accuracy of such numbers as printed on the
Securities and reliance may be placed only on the other identifying information
printed hereon.

      This Security shall be governed by and construed in accordance with the
laws of the State of New York.


                                      A-5
<PAGE>

                                 ASSIGNMENT FORM

(I) or (we) assign and transfer this Security to

________________________________________________________________________________
             (Insert assignee's social security or tax I.D. number)

________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
              (Print or type assignee's name, address and zip code)

and irrevocably appoint
__________________________________________________________ as agent to transfer
this Security on the Debt Security Register of the Company. The agent may
substitute another to act for him.

Dated:________________


                                   Signature: __________________________________
                                   (Sign exactly as name appears on the face
                                   of this Security)

                                   Name:________________________________________
                                   Address:_____________________________________

                                   Phone No.:___________________________________

Signature Guarantee

By: ____________________________
Signature guarantor must be an
eligible guarantor institution
- a bank or trust company or
broker or dealer which is a
member of a registered
exchange or the NASD.

                                      A-6
<PAGE>

                     SCHEDULE OF EXCHANGES OF SECURITIES(3)

The following exchanges, redemptions or repurchases of a part of this Global
Security have been made:

<TABLE>
<CAPTION>
       PRINCIPAL AMOUNT
   OF THIS GLOBAL SECURITY                AUTHORIZED                                                AMOUNT OF
        FOLLOWING SUCH                   SIGNATORY OF           AMOUNT OF DECREASE IN              INCREASE IN
        DECREASE DATE                TRUSTEE OR SECURITY           PRINCIPAL AMOUNT             PRINCIPAL AMOUNT
  OF EXCHANGE (OR INCREASE)               CUSTODIAN            OF THIS GLOBAL SECURITY       OF THIS GLOBAL SECURITY
-------------------------------     -----------------------    -------------------------    --------------------------
<S>                                 <C>                        <C>                          <C>

</TABLE>

----------
(3)   This schedule should be included only if the Debt Security is a Global
      Security.


                                      A-7
<PAGE>

                              NOTATION OF GUARANTEE

      Each of the Subsidiary Guarantors (which term includes any successor
Person under the Indenture), has fully, unconditionally and absolutely
guaranteed, to the extent set forth in the Indenture and subject to the
provisions in the Indenture, the due and punctual payment of the principal of,
and premium, if any, and interest on the Securities and all other amounts due
and payable under the Indenture and the Securities by the Partnership.

      The obligations of the Subsidiary Guarantors to the Holders of Securities
and to the Trustee pursuant to the Guarantee and the Indenture are expressly set
forth in Article XIV of the Indenture and reference is hereby made to the
Indenture for the precise terms of the Guarantee.


                           TE PRODUCTS PIPELINE COMPANY, LIMITED PARTNERSHIP

                           By: TEPPCO GP, Inc.
                               Its General Partner

                           By: _________________________________________________
                               Charles H. Leonard
                               Senior Vice President and Chief Financial Officer


                           TCTM, L.P.

                           By: TEPPCO GP, Inc.
                               Its General Partner

                           By: _________________________________________________
                               Charles H. Leonard
                               Senior Vice President and Chief Financial Officer


                           TEPPCO MIDSTREAM COMPANIES, L.P.

                           By: TEPPCO GP, Inc.
                               Its General Partner

                           By: _________________________________________________
                               Charles H. Leonard
                               Senior Vice President and Chief Financial Officer


                           JONAH GAS GATHERING COMPANY

                           By: TEPPCO GP, Inc.
                               Its Managing General Partner

                           By: _________________________________________________
                               Charles H. Leonard
                               Senior Vice President and Chief Financial Officer


                           VAL VERDE GAS GATHERING COMPANY, L.P.


                           By: TEPPCO NGL Pipelines, LLC,
                               Its General Partner

                           By: _________________________________________________
                               Charles H. Leonard
                               Senior Vice President


                                      A-8