Document:

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                                                                     EXHIBIT 4.3

                                  A/B EXCHANGE
                          REGISTRATION RIGHTS AGREEMENT

                            Dated as of May 17, 2002

                                  by and among

                          El Paso Energy Partners, L.P.

                   El Paso Energy Partners Finance Corporation

                 The Subsidiary Guarantors listed on Schedule A

                                       and

                     Credit Suisse First Boston Corporation

                              Goldman, Sachs & Co.

                           J.P. Morgan Securities Inc.

                         Banc One Capital Markets, Inc.

                             Fleet Securities, Inc.

                         Fortis Investment Services LLC

                         The Royal Bank of Scotland plc

                          BNP Paribas Securities Corp.

                          First Union Securities, Inc.

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         This Registration Rights Agreement (this "Agreement") is made and
entered into as of May 17, 2002 by and among El Paso Energy Partners, L.P., a
Delaware limited partnership (the "Partnership"), El Paso Energy Partners
Finance Corporation, a Delaware corporation ("El Paso Finance" and, together
with the Partnership, the "Issuers"), each of the entities listed on Schedule A
attached hereto (each, a "Subsidiary Guarantor" and collectively, the
"Subsidiary Guarantors"), and Credit Suisse First Boston Corporation, Goldman,
Sachs & Co., J.P. Morgan Securities Inc., Banc One Capital Markets, Inc., Fleet
Securities, Inc., Fortis Investment Services LLC, The Royal Bank of Scotland
plc, BNP Paribas Securities Corp. and First Union Securities, Inc. (each an
"Initial Purchaser" and, collectively, the "Initial Purchasers"), each of whom
has agreed to purchase the Issuers' 8 1/2% Series A Senior Subordinated Notes
due 2011 (such notes being purchased on the date hereof being referred to as the
"Series A Notes") pursuant to the Purchase Agreement (as defined below).

         This Agreement is made pursuant to the Purchase Agreement, dated May
14, 2002 (the "Purchase Agreement"), by and among the Issuers, the Subsidiary
Guarantors and the Initial Purchasers. In order to induce the Initial Purchasers
to purchase the Series A Notes, the Issuers have agreed to provide the
registration rights set forth in this Agreement. The execution and delivery of
this Agreement is a condition to the obligations of the Initial Purchasers set
forth in Section 2 of the Purchase Agreement. Capitalized terms used herein and
not otherwise defined shall have the meaning assigned to them in the Indenture,
dated May 17, 2001, as supplemented by the First Supplemental Indenture and the
Second Supplemental Indenture each dated as of April 18, 2002 (collectively, the
"Indenture"), among the Issuers, the Subsidiary Guarantors and JPMorgan Chase
Bank, as successor trustee (the "Trustee") to The Chase Manhattan Bank, relating
to the Series A Notes and the Series B Notes.

         The parties hereby agree as follows:

         Section 1. Definitions. As used in this Agreement, the following
capitalized terms shall have the following meanings:

         Act: The Securities Act of 1933, as amended.

         Affiliate: As defined in Rule 144 of the Act.

         Broker-Dealer: Any broker or dealer registered under the Exchange Act.

         Certificated Securities: Definitive Notes, as defined in the Indenture.

         Closing Date: The date hereof.

         Commission: The Securities and Exchange Commission.

         Consummate: An Exchange Offer shall be deemed "Consummated" for
purposes of this Agreement upon the occurrence of (a) the filing and
effectiveness under the Act of the Exchange Offer Registration Statement
relating to the Series B Notes to be issued in the Exchange Offer, (b) the
maintenance of such Exchange Offer Registration Statement continuously effective
and the keeping of the Exchange Offer open for a period not less than the period
required pursuant to Section 3(b) hereof and (c) the delivery by the Issuers to
the Registrar under the Indenture of Series B Notes in the same aggregate
principal amount as the aggregate principal amount of Series A Notes tendered by
Holders thereof pursuant to the Exchange Offer.

         Consummation Deadline: As defined in Section 3(b) hereof.

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         Effectiveness Deadline: As defined in Sections 3(a) and 4(a) hereof.

         Exchange Act: The Securities Exchange Act of 1934, as amended.

         Exchange Offer: The exchange and issuance by the Issuers of a principal
amount of Series B Notes (which shall be registered pursuant to the Exchange
Offer Registration Statement) equal to the outstanding principal amount of
Series A Notes that are tendered by such Holders in connection with such
exchange and issuance.

         Exchange Offer Registration Statement: The Registration Statement
relating to the Exchange Offer, including the related Prospectus.

         Exempt Resales: The transactions in which the Initial Purchasers
propose to sell the Series A Notes to certain "qualified institutional
buyers,"as such term is defined in Rule 144A under the Act and pursuant to
Regulation S under the Act.

         Filing Deadline: As defined in Sections 3(a) and 4(a) hereof.

         Holders: As defined in Section 2 hereof.

         Partnership Agreement: The Second Amended and Restated Agreement of
Limited Partnership of El Paso Energy Partners, L.P., dated as of February 13,
1993, amended and restated effective as of August 31, 2000, as such may be
amended, modified or supplemented from time to time.

         Prospectus: The prospectus included in a Registration Statement at the
time such Registration Statement is declared effective, as amended or
supplemented by any prospectus supplement and by all other amendments thereto,
including post-effective amendments, and all material incorporated by reference
into such Prospectus.

         Recommencement Date: As defined in Section 6(d) hereof.

         Registration Default: As defined in Section 5 hereof.

         Registration Statement: Any registration statement of the Issuers and
the Subsidiary Guarantors relating to (a) an offering of Series B Notes pursuant
to an Exchange Offer or (b) the registration for resale of Transfer Restricted
Securities pursuant to the Shelf Registration Statement, in each case, (i) that
is filed pursuant to the provisions of this Agreement and (ii) including the
Prospectus included therein, all amendments and supplements thereto (including
post-effective amendments) and all exhibits and material incorporated by
reference therein.

         Regulation S: Regulation S promulgated under the Act.

         Rule 144: Rule 144 promulgated under the Act.

         Series B Notes: The Issuers' 8 1/2% Series B Senior Subordinated Notes
due 2011 to be issued pursuant to the Indenture: (i) in the Exchange Offer or
(ii) as contemplated by Section 4 hereof.

         Shelf Registration Statement: As defined in Section 4 hereof.

         Suspension Notice: As defined in Section 6(d) hereof.

         TIA: The Trust Indenture Act of 1939 (15 U.S.C. Section 77aaa-77bbbb)
as in effect on the date of the Indenture.

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         Transfer Restricted Securities: Each Series A Note, until the earliest
to occur of (a) the date on which such Series A Note is exchanged in the
Exchange Offer for a Series B Note which is entitled to be resold to the public
by the Holder thereof without complying with the prospectus delivery
requirements of the Act, (b) the date on which such Series A Note has been
disposed of in accordance with a Shelf Registration Statement (and the
purchasers thereof have been issued Series B Notes), or (c) the date on which
such Series A Note is distributed to the public pursuant to Rule 144 under the
Act (and purchasers thereof have been issued Series B Notes) and each Series B
Note until the date on which such Series B Note is disposed of by a
Broker-Dealer pursuant to the "Plan of Distribution" contemplated by the
Exchange Offer Registration Statement (including the delivery of the Prospectus
contained therein).

         Section 2. Holders. A Person is deemed to be a holder of Transfer
Restricted Securities (each, a "Holder") whenever such Person owns Transfer
Restricted Securities.

         Section 3. Registered Exchange Offer.

                  (a) Unless the Exchange Offer shall not be permitted by
         applicable federal law (after the procedures set forth in Section
         6(a)(i) below have been complied with), the Issuers and the Subsidiary
         Guarantors shall (i) cause the Exchange Offer Registration Statement to
         be filed with the Commission as soon as practicable after the Closing
         Date, but in no event later than 95 days after the Closing Date (such
         95th day being the "Filing Deadline"), (ii) use its best efforts to
         cause such Exchange Offer Registration Statement to become effective at
         the earliest possible time, but in no event later than 150 days after
         the Closing Date (such 150th day being the "Effectiveness Deadline"),
         (iii) in connection with the foregoing, (A) file all pre-effective
         amendments to such Exchange Offer Registration Statement as may be
         necessary in order to cause it to become effective, (B) file, if
         applicable, a post-effective amendment to such Exchange Offer
         Registration Statement pursuant to Rule 430A under the Act and (C)
         cause all necessary filings, if any, in connection with the
         registration and qualification of the Series B Notes to be made under
         the Blue Sky laws of such jurisdictions as are necessary to permit
         Consummation of the Exchange Offer, and (iv) upon the effectiveness of
         such Exchange Offer Registration Statement, commence and Consummate the
         Exchange Offer. The Exchange Offer shall be on the appropriate form
         permitting (i) registration of the Series B Notes to be offered in
         exchange for the Series A Notes that are Transfer Restricted Securities
         and (ii) resales of Series B Notes by Broker-Dealers that tendered into
         the Exchange Offer Series A Notes that such Broker-Dealer acquired for
         its own account as a result of market making activities or other
         trading activities (other than Series A Notes acquired directly from
         the Issuers or any of their Affiliates) as contemplated by Section 3(c)
         below.

                  (b) The Issuers and the Subsidiary Guarantors shall use their
         respective best efforts to cause the Exchange Offer Registration
         Statement to be effective continuously, and shall keep the Exchange
         Offer open for a period of not less than the minimum period required
         under applicable federal and state securities laws to Consummate the
         Exchange Offer; provided, however, that in no event shall such period
         be less than 20 Business Days. The Issuers and the Subsidiary
         Guarantors shall cause the Exchange Offer to comply with all applicable
         federal and state securities laws. No securities other than the

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         Series B Notes shall be included in the Exchange Offer Registration
         Statement. The Issuers and the Subsidiary Guarantors shall use their
         respective best efforts to cause the Exchange Offer to be Consummated
         on the earliest practicable date after the Exchange Offer Registration
         Statement has become effective, but in no event later than 180 days
         after the Closing Date (such 180th day being the "Consummation
         Deadline").

                  (c) The Issuers shall include a "Plan of Distribution" section
         in the Prospectus contained in the Exchange Offer Registration
         Statement and indicate therein that any Broker-Dealer who holds
         Transfer Restricted Securities that were acquired for the account of
         such Broker-Dealer as a result of market-making activities or other
         trading activities (other than Series A Notes acquired directly from
         the Issuers or any Affiliate of the Issuers) may exchange such Transfer
         Restricted Securities pursuant to the Exchange Offer. Such "Plan of
         Distribution" section shall also contain all other information with
         respect to such sales by such Broker-Dealers that the Commission may
         require in order to permit such sales pursuant thereto, but such "Plan
         of Distribution" shall not name any such Broker-Dealer or disclose the
         amount of Transfer Restricted Securities held by any such
         Broker-Dealer, except to the extent required by the Commission as a
         result of a change in policy, rules or regulations after the date of
         this Agreement.

                  Because such Broker-Dealer may be deemed to be an
         "underwriter" within the meaning of the Act and must, therefore,
         deliver a prospectus meeting the requirements of the Act in connection
         with its initial sale of any Series B Notes received by such
         Broker-Dealer in the Exchange Offer, the Issuers and Subsidiary
         Guarantors shall permit the use of the Prospectus contained in the
         Exchange Offer Registration Statement by such Broker-Dealer to satisfy
         such prospectus delivery requirement. To the extent necessary to ensure
         that the prospectus contained in the Exchange Offer Registration
         Statement is available for sales of Series B Notes by Broker-Dealers,
         the Issuers and the Subsidiary Guarantors agree to use their respective
         best efforts to keep the Exchange Offer Registration Statement
         continuously effective, supplemented, amended and current as required
         by and subject to the provisions of Sections 6(a) and (c) hereof and in
         conformity with the requirements of this Agreement, the Act and the
         policies, rules and regulations of the Commission as announced from
         time to time, for a period of one year from the Consummation Deadline
         or such shorter period as will terminate when all Transfer Restricted
         Securities covered by such Registration Statement have been sold
         pursuant thereto. The Issuers and the Subsidiary Guarantors shall
         provide sufficient copies of the latest version of such Prospectus to
         such Broker-Dealers, promptly upon request, and in no event later than
         one day after such request, at any time during such period.

         Section 4. Shelf Registration.

                  (a) Shelf Registration. If (i) the Exchange Offer is not
         permitted by applicable law (after the Issuers and the Subsidiary
         Guarantors have complied with the procedures set forth in Section
         6(a)(i) below) or (ii) if any Holder of Transfer Restricted Securities
         shall notify the Issuers within 20 Business Days following the
         Consummation Deadline that (A) such Holder was prohibited by law or
         Commission policy from participating in the Exchange Offer or (B) such
         Holder may not resell the Series B Notes

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         acquired by it in the Exchange Offer to the public without delivering a
         prospectus and if the Prospectus contained in the Exchange Offer
         Registration Statement is not appropriate or available for such resales
         by such Holder or (C) such Holder is a Broker-Dealer and holds Series A
         Notes acquired directly from the Issuers or any of their Affiliates,
         then the Issuers and the Subsidiary Guarantors shall:

                           (x) cause to be filed, on or prior to 30 days after
                  the earlier of (i) the date on which the Issuers determine
                  that the Exchange Offer Registration Statement cannot be filed
                  as a result of clause (a)(i) above and (ii) the date on which
                  the Issuers receive the notice specified in clause (a)(ii)
                  above, (such earlier date, the "Filing Deadline"), a shelf
                  registration statement pursuant to Rule 415 under the Act
                  (which may be an amendment to the Exchange Offer Registration
                  Statement (the "Shelf Registration Statement")), relating to
                  all Transfer Restricted Securities, and

                           (y) shall use their respective best efforts to cause
                  such Shelf Registration Statement to become effective on or
                  prior to 60 days after the Filing Deadline for the Shelf
                  Registration Statement (such 60th day the "Effectiveness
                  Deadline").

                  If, after the Issuers have filed an Exchange Offer
         Registration Statement that satisfies the requirements of Section 3(a)
         above, the Issuers are required to file and make effective a Shelf
         Registration Statement solely because the Exchange Offer is not
         permitted under applicable federal law (i.e., clause (a)(i) above),
         then the filing of the Exchange Offer Registration Statement shall be
         deemed to satisfy the requirements of clause (x) above; provided that,
         in such event, the Issuers shall remain obligated to meet the
         Effectiveness Deadline set forth in clause (y).

                  To the extent necessary to ensure that the Shelf Registration
         Statement is available for sales of Transfer Restricted Securities by
         the Holders thereof entitled to the benefit of this Section 4(a) and
         the other securities required to be registered therein pursuant to
         Section 6(b)(ii) hereof, the Issuers and the Subsidiary Guarantors
         shall use their respective best efforts to keep any Shelf Registration
         Statement required by this Section 4(a) continuously effective,
         supplemented, amended and current as required by and subject to the
         provisions of Sections 6(b) and (c) hereof and in conformity with the
         requirements of this Agreement, the Act and the policies, rules and
         regulations of the Commission as announced from time to time, for a
         period of at least two years (as extended pursuant to Section 6(d))
         following the Closing Date, or such shorter period as will terminate
         when all Transfer Restricted Securities covered by such Shelf
         Registration Statement have been sold pursuant thereto.

                  (b) Provision by Holders of Certain Information in Connection
         with the Shelf Registration Statement. No Holder of Transfer Restricted
         Securities may include any of its Transfer Restricted Securities in any
         Shelf Registration Statement pursuant to this Agreement unless and
         until such Holder furnishes to the Issuers in writing, within 20 days
         after receipt of a request therefor, the information specified in Item
         507 or 508 of Regulation S-K, as applicable, of the Act for use in
         connection with any Shelf

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         Registration Statement or Prospectus or preliminary Prospectus included
         therein. No Holder of Transfer Restricted Securities shall be entitled
         to liquidated damages pursuant to Section 5 hereof unless and until
         such Holder shall have provided all such information. Each selling
         Holder agrees to promptly furnish additional information required to be
         disclosed in order to make the information previously furnished to the
         Issuers by such Holder not materially misleading.

         Section 5. Liquidated Damages. If (i) any Registration Statement
required by this Agreement is not filed with the Commission on or prior to the
applicable Filing Deadline, (ii) any such Registration Statement has not been
declared effective by the Commission on or prior to the applicable Effectiveness
Deadline, (iii) the Exchange Offer has not been Consummated on or prior to the
Consummation Deadline or (iv) any Registration Statement required by this
Agreement is filed and declared effective but shall thereafter cease to be
effective or fail to be usable for its intended purpose without being succeeded
within 2 days by a post-effective amendment to such Registration Statement that
cures such failure and that is itself declared effective within 2 days of filing
such post-effective amendment to such Registration Statement (each such event
referred to in clauses (i) through (iv), a "Registration Default"), then the
Issuers and the Subsidiary Guarantors hereby jointly and severally agree to pay
to each Holder of Transfer Restricted Securities affected thereby liquidated
damages in an amount equal to $.05 per week per $1,000 in principal amount of
Transfer Restricted Securities held by such Holder for each week or portion
thereof that the Registration Default continues for the first 90-day period
immediately following the occurrence of such Registration Default. The amount of
the liquidated damages shall increase by an additional $.05 per week per $1,000
in principal amount of Transfer Restricted Securities with respect to each
subsequent 90-day period until all Registration Defaults have been cured, up to
a maximum amount of liquidated damages of $.50 per week per $1,000 in principal
amount of Transfer Restricted Securities; provided that the Issuers and the
Subsidiary Guarantors shall in no event be required to pay liquidated damages
for more than one Registration Default at any given time. Notwithstanding
anything to the contrary set forth herein, (1) upon filing of the Exchange Offer
Registration Statement (and/or, if applicable, the Shelf Registration
Statement), in the case of (i) above, (2) upon the effectiveness of the Exchange
Offer Registration Statement (and/or, if applicable, the Shelf Registration
Statement), in the case of (ii) above, (3) upon Consummation of the Exchange
Offer, in the case of (iii) above, or (4) upon the filing of a post-effective
amendment to the Registration Statement or an additional Registration Statement
that causes the Exchange Offer Registration Statement (and/or, if applicable,
the Shelf Registration Statement) to again be declared effective or made usable
in the case of (iv) above, the liquidated damages payable with respect to the
Transfer Restricted Securities as a result of such clause (i), (ii), (iii) or
(iv), as applicable, shall cease.

         All accrued liquidated damages shall be paid to the Holders entitled
thereto, in the manner providing for the payment of interest in the Indenture,
on each Interest Payment Date, as more fully set forth in the Indenture and the
Notes. Notwithstanding the fact that any securities for which liquidated damages
are due cease to be Transfer Restricted Securities, all obligations of the
Issuers and the Subsidiary Guarantors to pay liquidated damages with respect to
securities shall survive until such time as such obligations with respect to
such securities shall have been satisfied in full.

         Section 6. Registration Procedures.

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                  (a) Exchange Offer Registration Statement. In connection with
         the Exchange Offer, the Issuers and the Subsidiary Guarantors shall (x)
         comply with all applicable provisions of Section 6(c) below, (y) use
         their respective best efforts to effect such exchange and to permit the
         resale of Series B Notes by Broker-Dealers that tendered in the
         Exchange Offer Series A Notes that such Broker-Dealer acquired for its
         own account as a result of its market making activities or other
         trading activities (other than Series A Notes acquired directly from
         the Issuers or any of their Affiliates) being sold in accordance with
         the intended method or methods of distribution thereof, and (z) comply
         with all of the following provisions:

                           (i) If, following the date hereof there has been
                  announced a change in Commission policy with respect to
                  exchange offers such as the Exchange Offer, that in the
                  reasonable opinion of counsel to the Issuers raises a
                  substantial question as to whether the Exchange Offer is
                  permitted by applicable federal law, the Issuers and the
                  Subsidiary Guarantors hereby agree to seek a no-action letter
                  or other favorable decision from the Commission allowing the
                  Issuers and the Subsidiary Guarantors to Consummate an
                  Exchange Offer for such Transfer Restricted Securities. The
                  Issuers and the Subsidiary Guarantors hereby agree to pursue
                  the issuance of such a decision to the Commission staff level.
                  In connection with the foregoing, the Issuers and the
                  Subsidiary Guarantors hereby agree to take all such other
                  actions as may be requested by the Commission or otherwise
                  required in connection with the issuance of such decision,
                  including without limitation (A) participating in telephonic
                  conferences with the Commission, (B) delivering to the
                  Commission staff an analysis prepared by counsel to the
                  Issuers setting forth the legal bases, if any, upon which such
                  counsel has concluded that such an Exchange Offer should be
                  permitted and (C) diligently pursuing a resolution (which need
                  not be favorable) by the Commission staff.

                           (ii) As a condition to its participation in the
                  Exchange Offer, each Holder of Transfer Restricted Securities
                  (including, without limitation, any Holder who is a Broker
                  Dealer) shall furnish, upon the request of the Issuers, prior
                  to the Consummation of the Exchange Offer, a written
                  representation to the Issuers and the Subsidiary Guarantors
                  (which may be contained in the letter of transmittal
                  contemplated by the Exchange Offer Registration Statement) to
                  the effect that (A) it is not an Affiliate of the Issuers, (B)
                  it is not engaged in, and does not intend to engage in, and
                  has no arrangement or understanding with any Person to
                  participate in, a distribution of the Series B Notes to be
                  issued in the Exchange Offer and (C) it is acquiring the
                  Series B Notes in its ordinary course of business. As a
                  condition to its participation in the Exchange Offer, each
                  Holder using the Exchange Offer to participate in a
                  distribution of the Series B Notes shall acknowledge and agree
                  that, if the resales are of Series B Notes obtained by such
                  Holder in exchange for Series A Notes acquired directly from
                  the Issuers or an Affiliate thereof, it (1) could not, under
                  Commission policy as in effect on the date of this Agreement,
                  rely on the position of the Commission enunciated in Morgan
                  Stanley and Co., Inc. (available June 5, 1991) and Exxon
                  Capital Holdings Corporation (available May 13, 1988), as
                  interpreted in the

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                  Commission's letter to Shearman & Sterling dated July 2, 1993,
                  and similar no-action letters (including, if applicable, any
                  no-action letter obtained pursuant to clause (i) above), and
                  (2) must comply with the registration and prospectus delivery
                  requirements of the Act in connection with a secondary resale
                  transaction and that such a secondary resale transaction must
                  be covered by an effective registration statement containing
                  the selling security holder information required by Item 507
                  or 508, as applicable, of Regulation S-K.

                           (iii) Prior to effectiveness of the Exchange Offer
                  Registration Statement, the Issuers and the Subsidiary
                  Guarantors shall provide a supplemental letter to the
                  Commission (A) stating that the Issuers and the Subsidiary
                  Guarantors are registering the Exchange Offer in reliance on
                  the position of the Commission enunciated in Exxon Capital
                  Holdings Corporation (available May 13, 1988), Morgan Stanley
                  and Co., Inc. (available June 5, 1991) as interpreted in the
                  Commission's letter to Shearman & Sterling dated July 2, 1993,
                  and, if applicable, any no-action letter obtained pursuant to
                  clause (i) above, (B) including a representation that neither
                  the Issuers nor any Subsidiary Guarantor has entered into any
                  arrangement or understanding with any Person to distribute the
                  Series B Notes to be received in the Exchange Offer and that,
                  to the best of the Issuers' and each Subsidiary Guarantor's
                  information and belief, each Holder participating in the
                  Exchange Offer is acquiring the Series B Notes in its ordinary
                  course of business and has no arrangement or understanding
                  with any Person to participate in the distribution of the
                  Series B Notes received in the Exchange Offer and (C) any
                  other undertaking or representation required by the Commission
                  as set forth in any no-action letter obtained pursuant to
                  clause (i) above, if applicable.

                  (b) Shelf Registration Statement. In connection with the Shelf
         Registration Statement, the Issuers and the Subsidiary Guarantors
         shall:

                           (i) comply with all the provisions of Section 6(c)
                  below and use their respective best efforts to effect such
                  registration to permit the sale of the Transfer Restricted
                  Securities being sold in accordance with the intended method
                  or methods of distribution thereof (as indicated in the
                  information furnished to the Issuers pursuant to Section 4(b)
                  hereof), and pursuant thereto the Issuers and the Subsidiary
                  Guarantors will prepare and file with the Commission a
                  Registration Statement relating to the registration on any
                  appropriate form under the Act, which form shall be available
                  for the sale of the Transfer Restricted Securities in
                  accordance with the intended method or methods of distribution
                  thereof within the time periods and otherwise in accordance
                  with the provisions hereof.

                           (ii) issue, upon the request of any Holder or
                  purchaser of Series A Notes covered by any Shelf Registration
                  Statement contemplated by this Agreement, Series B Notes
                  having an aggregate principal amount equal to the aggregate
                  principal amount of Series A Notes sold pursuant to the Shelf
                  Registration Statement and surrendered to the Issuers for
                  cancellation; the Issuers shall register Series B Notes on the
                  Shelf Registration Statement for this purpose

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                  and issue the Series B Notes to the purchaser(s) of securities
                  subject to the Shelf Registration Statement in the names as
                  such purchaser(s) shall designate.

                  (c) General Provisions. In connection with any Registration
         Statement and any related Prospectus required by this Agreement, the
         Issuers and the Subsidiary Guarantors shall:

                           (i) use their respective best efforts to keep such
                  Registration Statement continuously effective and provide all
                  requisite financial statements for the period specified in
                  Section 3 or 4 of this Agreement, as applicable. Upon the
                  occurrence of any event that would cause any such Registration
                  Statement or the Prospectus contained therein (A) to contain
                  an untrue statement of material fact or omit to state any
                  material fact necessary to make the statements therein not
                  misleading or (B) not to be effective and usable for resale of
                  Transfer Restricted Securities during the period required by
                  this Agreement, the Issuers and the Subsidiary Guarantors
                  shall file promptly an appropriate amendment to such
                  Registration Statement curing such defect, and, if Commission
                  review is required, use their respective best efforts to cause
                  such amendment to be declared effective as soon as
                  practicable;

                           (ii) prepare and file with the Commission such
                  amendments and post-effective amendments to the applicable
                  Registration Statement as may be necessary to keep such
                  Registration Statement effective for the applicable period set
                  forth in Section 3 or 4 hereof, as the case may be; cause the
                  Prospectus to be supplemented by any required Prospectus
                  supplement, and as so supplemented to be filed pursuant to
                  Rule 424 under the Act, and to comply fully with Rules 424,
                  430A and 462, as applicable, under the Act in a timely manner;
                  and comply with the provisions of the Act with respect to the
                  disposition of all securities covered by such Registration
                  Statement during the applicable period in accordance with the
                  intended method or methods of distribution by the sellers
                  thereof set forth in such Registration Statement or supplement
                  to the Prospectus;

                           (iii) advise each Holder promptly and, if requested
                  by such Holder, confirm such advice in writing, (A) when the
                  Prospectus or any Prospectus supplement or post-effective
                  amendment has been filed, and, with respect to any applicable
                  Registration Statement or any post-effective amendment
                  thereto, when the same has become effective, (B) of any
                  request by the Commission for amendments to the Registration
                  Statement or amendments or supplements to the Prospectus or
                  for additional information relating thereto, (C) of the
                  issuance by the Commission of any stop order suspending the
                  effectiveness of the Registration Statement under the Act or
                  of the suspension by any state securities commission of the
                  qualification of the Transfer Restricted Securities for
                  offering or sale in any jurisdiction, or the initiation of any
                  proceeding for any of the preceding purposes, and (D) of the
                  existence of any fact or the happening of any event that makes
                  any statement of a material fact made in the Registration
                  Statement, the Prospectus, any amendment or supplement thereto
                  or any document incorporated by reference therein untrue, or
                  that requires the making of any additions to or changes in the

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                  Registration Statement in order to make the statements therein
                  not misleading, or that requires the making of any additions
                  to or changes in the Prospectus in order to make the
                  statements therein, in the light of the circumstances under
                  which they were made, not misleading. If at any time the
                  Commission shall issue any stop order suspending the
                  effectiveness of the Registration Statement, or any state
                  securities commission or other regulatory authority shall
                  issue an order suspending the qualification or exemption from
                  qualification of the Transfer Restricted Securities under
                  state securities or Blue Sky laws, the Issuers and the
                  Subsidiary Guarantors shall use their respective best efforts
                  to obtain the withdrawal or lifting of such order at the
                  earliest possible time;

                           (iv) subject to Section 6(c)(i), if any fact or event
                  contemplated by Section 6(c)(iii)(D) above shall exist or have
                  occurred, prepare a supplement or post-effective amendment to
                  the Registration Statement or related Prospectus or any
                  document incorporated therein by reference or file any other
                  required document so that, as thereafter delivered to the
                  purchasers of Transfer Restricted Securities, the Prospectus
                  will not contain an untrue statement of a material fact or
                  omit to state any material fact necessary to make the
                  statements therein, in the light of the circumstances under
                  which they were made, not misleading;

                           (v) furnish to each Holder in connection with such
                  exchange or sale, if any, before filing with the Commission,
                  copies of any Registration Statement or any Prospectus
                  included therein or any amendments or supplements to any such
                  Registration Statement or Prospectus (including all documents
                  incorporated by reference after the initial filing of such
                  Registration Statement), which documents will be subject to
                  the review and comment of such Holders in connection with such
                  sale, if any, for a period of at least five Business Days, and
                  the Issuers will not file any such Registration Statement or
                  Prospectus or any amendment or supplement to any such
                  Registration Statement or Prospectus (including all such
                  documents incorporated by reference) to which such Holders
                  shall reasonably object within five Business Days after the
                  receipt thereof. A Holder shall be deemed to have reasonably
                  objected to such filing if such Registration Statement,
                  amendment, Prospectus or supplement, as applicable, as
                  proposed to be filed, contains an untrue statement of a
                  material fact or omits to state any material fact necessary to
                  make the statements therein not misleading or fails to comply
                  with the applicable requirements of the Act;

                           (vi) promptly provide, prior to the filing of any
                  document that is to be incorporated by reference into a
                  Registration Statement or Prospectus, copies of such document
                  to each Holder in connection with such exchange or sale, if
                  any, make the Issuers' and the Subsidiary Guarantors'
                  representatives available for discussion of such document and
                  other customary due diligence matters, and include such
                  information in such document prior to the filing thereof as
                  such Holders may reasonably request;

                           (vii) make available, at reasonable times, for
                  inspection by each Holder and any attorney or accountant
                  retained by such Holders, all financial and other

                                       10
<PAGE>

                  records, and pertinent corporate documents of the Issuers and
                  the Subsidiary Guarantors and cause the Issuers' and the
                  Subsidiary Guarantors' officers, directors and employees to
                  supply all information reasonably requested by any such
                  Holder, attorney or accountant in connection with such
                  Registration Statement or any post-effective amendment thereto
                  subsequent to the filing thereof and prior to its
                  effectiveness;

                           (viii) if requested by any Holders in connection with
                  such exchange or sale, promptly include in any Registration
                  Statement or Prospectus, pursuant to a supplement or
                  post-effective amendment if necessary, such information as
                  such Holders may reasonably request to have included therein,
                  including, without limitation, information relating to the
                  "Plan of Distribution" of the Transfer Restricted Securities;
                  and make all required filings of such Prospectus supplement or
                  post-effective amendment as soon as practicable after the
                  Issuers are notified of the matters to be included in such
                  Prospectus supplement or post-effective amendment;

                           (ix) furnish to each Holder in connection with such
                  exchange or sale, without charge, at least one copy of the
                  Registration Statement, as first filed with the Commission,
                  and of each amendment thereto, including all documents
                  incorporated by reference therein and all exhibits (including
                  exhibits incorporated therein by reference);

                           (x) deliver to each Holder without charge, as many
                  copies of the Prospectus (including each preliminary
                  prospectus) and any amendment or supplement thereto as such
                  Persons reasonably may request; the Issuers and the Subsidiary
                  Guarantors hereby consent to the use (in accordance with law)
                  of the Prospectus and any amendment or supplement thereto by
                  each selling Holder in connection with the offering and the
                  sale of the Transfer Restricted Securities covered by the
                  Prospectus or any amendment or supplement thereto;

                           (xi) upon the request of any Holder, enter into such
                  agreements (including underwriting agreements) and make such
                  representations and warranties and take all such other actions
                  in connection therewith in order to expedite or facilitate the
                  disposition of the Transfer Restricted Securities pursuant to
                  any applicable Registration Statement contemplated by this
                  Agreement as may be reasonably requested by any Holder in
                  connection with any sale or resale pursuant to any applicable
                  Registration Statement. In such connection, the Issuers and
                  the Subsidiary Guarantors shall:

                                    (A) upon request of any Holder, furnish (or
                           in the case of paragraphs (2) and (3), use their best
                           efforts to cause to be furnished) to each Holder,
                           upon Consummation of the Exchange Offer or upon the
                           effectiveness of the Shelf Registration Statement, as
                           the case may be:

                                             (1) a certificate, dated such date,
                                    signed on behalf of the Issuers and each
                                    Subsidiary Guarantor by (x) the President or

                                       11
<PAGE>

                                    any Vice President and (y) a principal
                                    financial or accounting officer of each of
                                    the Issuers and each Subsidiary Guarantor,
                                    confirming, as of the date thereof, the
                                    matters set forth in Sections 6(cc), 9(a)
                                    and 9(b) of the Purchase Agreement and such
                                    other similar matters as such Holders may
                                    reasonably request;

                                             (2) an opinion, dated the date of
                                    Consummation of the Exchange Offer or the
                                    date of effectiveness of the Shelf
                                    Registration Statement, as the case may be,
                                    of counsel for the Issuers and the
                                    Subsidiary Guarantors covering matters
                                    similar to those set forth in paragraph (e)
                                    of Section 9 of the Purchase Agreement and
                                    such other matters as such Holder may
                                    reasonably request, and in any event
                                    including a statement to the effect that
                                    such counsel has participated in conferences
                                    with officers and other representatives of
                                    the Issuers and the Subsidiary Guarantors,
                                    and representatives of the independent
                                    public accountants for the Issuers and the
                                    Subsidiary Guarantors and have considered
                                    the matters required to be stated therein
                                    and the statements contained therein,
                                    although such counsel has not independently
                                    verified the accuracy, completeness or
                                    fairness of such statements; and that such
                                    counsel advises that, on the basis of the
                                    foregoing, no facts came to such counsel's
                                    attention that caused such counsel to
                                    believe that the applicable Registration
                                    Statement, at the time such Registration
                                    Statement or any post-effective amendment
                                    thereto became effective and, in the case of
                                    the Exchange Offer Registration Statement,
                                    as of the date of Consummation of the
                                    Exchange Offer, contained an untrue
                                    statement of a material fact or omitted to
                                    state a material fact required to be stated
                                    therein or necessary to make the statements
                                    therein not misleading, or that the
                                    Prospectus contained in such Registration
                                    Statement as of its date and, in the case of
                                    the opinion dated the date of Consummation
                                    of the Exchange Offer, as of the date of
                                    Consummation, contained an untrue statement
                                    of a material fact or omitted to state a
                                    material fact necessary in order to make the
                                    statements therein, in the light of the
                                    circumstances under which they were made,
                                    not misleading. Without limiting the
                                    foregoing, such counsel may state further
                                    that such counsel assumes no responsibility
                                    for, and has not independently verified, the
                                    accuracy, completeness or fairness of the
                                    financial statements, notes and schedules
                                    and other financial data included in any
                                    Registration Statement contemplated by this
                                    Agreement or the related Prospectus; and

                                             (3) a customary comfort letter,
                                    dated the date of Consummation of the
                                    Exchange Offer, or as of the date of
                                    effectiveness of the Shelf Registration
                                    Statement, as the case may be, from the
                                    Issuers' independent accountants, in the
                                    customary

                                       12
<PAGE>

                                    form and covering matters of the type
                                    customarily covered in comfort letters to
                                    underwriters in connection with underwritten
                                    offerings, and affirming the matters set
                                    forth in the comfort letters delivered
                                    pursuant to Section 9(g) of the Purchase
                                    Agreement; and

                                    (B) deliver such other documents and
                           certificates as may be reasonably requested by the
                           selling Holders to evidence compliance with the
                           matters covered in clause (A) above and with any
                           customary conditions contained in any agreement
                           entered into by the Issuers and the Subsidiary
                           Guarantors pursuant to this clause (xi);

                           (xii) prior to any public offering of Transfer
                  Restricted Securities, cooperate with the selling Holders and
                  their counsel in connection with the registration and
                  qualification of the Transfer Restricted Securities under the
                  securities or Blue Sky laws of such jurisdictions as the
                  selling Holders may request and do any and all other acts or
                  things necessary or advisable to enable the disposition in
                  such jurisdictions of the Transfer Restricted Securities
                  covered by the applicable Registration Statement; provided,
                  however, that neither the Issuers nor any Subsidiary Guarantor
                  shall be required to register or qualify as a foreign
                  corporation where it is not now so qualified or to take any
                  action that would subject it to the service of process in
                  suits or to taxation, other than as to matters and
                  transactions relating to the Registration Statement, in any
                  jurisdiction where it is not now so subject;

                           (xiii) in connection with any sale of Transfer
                  Restricted Securities that will result in such securities no
                  longer being Transfer Restricted Securities, cooperate with
                  the Holders to facilitate the timely preparation and delivery
                  of certificates representing Transfer Restricted Securities to
                  be sold and not bearing any restrictive legends; and to
                  register such Transfer Restricted Securities in such
                  denominations and such names as the selling Holders may
                  request at least two Business Days prior to such sale of
                  Transfer Restricted Securities;

                           (xiv) use their respective best efforts to cause the
                  disposition of the Transfer Restricted Securities covered by
                  the Registration Statement to be registered with or approved
                  by such other governmental agencies or authorities as may be
                  necessary to enable the seller or sellers thereof to
                  consummate the disposition of such Transfer Restricted
                  Securities, subject to the proviso contained in clause (xii)
                  above;

                           (xv) provide a CUSIP number for all Transfer
                  Restricted Securities not later than the effective date of a
                  Registration Statement covering such Transfer Restricted
                  Securities and provide the Trustee under the Indenture with
                  printed certificates for the Transfer Restricted Securities
                  which are in a form eligible for deposit with The Depository
                  Trust Company;

                           (xvi) otherwise use their respective best efforts to
                  comply with all applicable rules and regulations of the
                  Commission, and make generally available

                                       13
<PAGE>

                  to their security holders with regard to any applicable
                  Registration Statement, as soon as practicable, a consolidated
                  earnings statement meeting the requirements of Rule 158 (which
                  need not be audited) covering a twelve-month period beginning
                  after the effective date of the Registration Statement (as
                  such term is defined in paragraph (c) of Rule 158 under the
                  Act);

                           (xvii) cause the Indenture to be qualified under the
                  TIA not later than the effective date of the first
                  Registration Statement required by this Agreement and, in
                  connection therewith, cooperate with the Trustee and the
                  Holders to effect such changes to the Indenture as may be
                  required for such Indenture to be so qualified in accordance
                  with the terms of the TIA; and execute and use its best
                  efforts to cause the Trustee to execute, all documents that
                  may be required to effect such changes and all other forms and
                  documents required to be filed with the Commission to enable
                  such Indenture to be so qualified in a timely manner; and

                           (xviii) provide promptly to each Holder, upon
                  request, each document filed with the Commission pursuant to
                  the requirements of Section 13 or Section 15(d) of the
                  Exchange Act.

                  (d) Restrictions on Holders. Each Holder agrees by acquisition
         of a Transfer Restricted Security that, upon receipt of the notice
         referred to in Section 6(c)(iii)(C) or any notice from the Issuers of
         the existence of any fact of the kind described in Section 6(c)(iii)(D)
         hereof (in each case, a "Suspension Notice"), such Holder will
         forthwith discontinue disposition of Transfer Restricted Securities
         pursuant to the applicable Registration Statement until (i) such Holder
         has received copies of the supplemented or amended Prospectus
         contemplated by Section 6(c)(iv) hereof, or (ii) such Holder is advised
         in writing by the Issuers that the use of the Prospectus may be
         resumed, and has received copies of any additional or supplemental
         filings that are incorporated by reference in the Prospectus (in each
         case, the "Recommencement Date"). Each Holder receiving a Suspension
         Notice hereby agrees that it will either (i) destroy any Prospectuses,
         other than permanent file copies, then in such Holder's possession
         which have been replaced by the Issuers with more recently dated
         Prospectuses or (ii) deliver to the Issuers (at the Issuers' expense)
         all copies, other than permanent file copies, then in such Holder's
         possession of the Prospectus covering such Transfer Restricted
         Securities that was current at the time of receipt of the Suspension
         Notice. The time period regarding the effectiveness of such
         Registration Statement set forth in Section 3 or 4 hereof, as
         applicable, shall be extended by a number of days equal to the number
         of days in the period from and including the date of delivery of the
         Suspension Notice to the date of delivery of the Recommencement Date.

                  (e) Effectiveness of Registration Statement. Notwithstanding
         anything to the contrary contained in this Agreement, the obligation of
         the Issuers and the Subsidiary Guarantors hereunder to maintain the
         effectiveness of any Registration Statement and any related Prospectus
         may be suspended, without default or penalty to the Issuers or the
         Subsidiary Guarantors, for one or more periods of time as may be
         required with respect to such Registration Statement if (A) the Board
         of Directors of the General Partner shall have determined that the
         offering and sales under the Registration Statement, the filing of

                                       14
<PAGE>

         such Registration Statement or the maintenance of its effectiveness
         would require disclosure of or would interfere in any material respect
         with any material financing, acquisition, merger, offering or other
         transaction involving the Issuers or the Subsidiary Guarantors or would
         otherwise require disclosure of nonpublic information that could
         materially and adversely affect the Issuers or the Subsidiary
         Guarantors or (B) the Issuers are required by any state or federal
         securities laws to file an amendment or supplement to such Registration
         Statement for the purpose of incorporating quarterly or annual
         information, which is not automatically effective. Further, the Issuers
         and the Subsidiary Guarantors shall be deemed to have used their
         respective best efforts to keep any Registration Statement continuously
         effective if either (A) or (B) above has occurred.

         Section 7. Registration Expenses.

                  (a) All expenses incident to the Issuers' and the Subsidiary
         Guarantors' performance of or compliance with this Agreement will be
         borne by the Issuers, regardless of whether a Registration Statement
         becomes effective, including without limitation: (i) all registration
         and filing fees and expenses; (ii) all fees and expenses of compliance
         with federal securities and state Blue Sky or securities laws; (iii)
         all expenses of printing (including printing certificates for the
         Series B Notes to be issued in the Exchange Offer and printing of
         Prospectuses), messenger and delivery services and telephone; (iv) all
         fees and disbursements of counsel for the Issuers, the Subsidiary
         Guarantors and the Holders of Transfer Restricted Securities; (v) all
         application and filing fees in connection with listing the Series B
         Notes on a national securities exchange or automated quotation system
         pursuant to the requirements hereof; and (vi) all fees and
         disbursements of independent certified public accountants of the
         Issuers and the Subsidiary Guarantors (including the expenses of any
         special audit and comfort letters required by or incident to such
         performance).

                  The Issuers will, in any event, bear their and the Subsidiary
         Guarantors' internal expenses (including, without limitation, all
         salaries and expenses of its officers and employees performing legal or
         accounting duties), the expenses of any annual audit and the fees and
         expenses of any Person, including special experts, retained by the
         Issuers or the Subsidiary Guarantors.

                  (b) In connection with any Registration Statement required by
         this Agreement (including, without limitation, the Exchange Offer
         Registration Statement and the Shelf Registration Statement), the
         Issuers and the Subsidiary Guarantors will reimburse the Initial
         Purchasers and the Holders of Transfer Restricted Securities who are
         tendering Series A Notes in the Exchange Offer and/or selling or
         reselling Series A Notes or Series B Notes pursuant to the "Plan of
         Distribution" contained in the Exchange Offer Registration Statement or
         the Shelf Registration Statement, as applicable, for the reasonable
         fees and disbursements of not more than one counsel, who shall be
         Andrews & Kurth Mayor, Day, Caldwell & Keeton L.L.P., unless another
         firm shall be chosen by the Holders of a majority in principal amount
         of the Transfer Restricted Securities for whose benefit such
         Registration Statement is being prepared.

         Section 8. Indemnification.

                                       15
<PAGE>

                  (a) The Issuers and the Subsidiary Guarantors agree, jointly
         and severally, to indemnify and hold harmless each Holder, its
         directors, officers and each Person, if any, who controls such Holder
         (within the meaning of Section 15 of the Act or Section 20 of the
         Exchange Act), from and against any and all losses, claims, damages,
         liabilities or judgments (including without limitation, any legal or
         other expenses incurred in connection with investigating or defending
         any matter, including any action that could give rise to any such
         losses, claims, damages, liabilities or judgments) caused by any untrue
         statement or alleged untrue statement of a material fact contained in
         any Registration Statement, preliminary prospectus or Prospectus (or
         any amendment or supplement thereto) provided by the Issuers to any
         Holder or any prospective purchaser of Series B Notes or registered
         Series A Notes, or caused by any omission or alleged omission to state
         therein a material fact required to be stated therein or necessary to
         make the statements therein not misleading, except insofar as such
         losses, claims, damages, liabilities or judgments are caused by an
         untrue statement or omission or alleged untrue statement or omission
         that is based upon information relating to any of the Holders furnished
         in writing to the Issuers by any of the Holders.

                  (b) Each Holder of Transfer Restricted Securities agrees,
         severally and not jointly, to indemnify and hold harmless the Issuers
         and the Subsidiary Guarantors, and their respective directors and
         officers, and each Person, if any, who controls (within the meaning of
         Section 15 of the Act or Section 20 of the Exchange Act) the Issuers,
         or the Subsidiary Guarantors to the same extent as the foregoing
         indemnity from the Issuers and the Subsidiary Guarantors set forth in
         Section 8(a) above, but only with reference to information relating to
         such Holder furnished in writing to the Issuers by such Holder
         expressly for use in any Registration Statement. In no event shall any
         Holder, its directors, officers or any Person who controls such Holder
         be liable or responsible for any amount in excess of the amount by
         which the total amount received by such Holder with respect to its sale
         of Transfer Restricted Securities pursuant to a Registration Statement
         exceeds (i) the amount paid by such Holder for such Transfer Restricted
         Securities and (ii) the amount of any damages that such Holder, its
         directors, officers or any Person who controls such Holder has
         otherwise been required to pay by reason of such untrue or alleged
         untrue statement or omission or alleged omission.

                  (c) In case any action shall be commenced involving any Person
         in respect of which indemnity may be sought pursuant to Section 8(a) or
         8(b) (the "indemnified party"), the indemnified party shall promptly
         notify the Person against whom such indemnity may be sought (the
         "indemnifying person") in writing and the indemnifying party shall
         assume the defense of such action, including the employment of counsel
         reasonably satisfactory to the indemnified party and the payment of all
         fees and expenses of such counsel, as incurred (except that in the case
         of any action in respect of which indemnity may be sought pursuant to
         both Sections 8(a) and 8(b), a Holder shall not be required to assume
         the defense of such action pursuant to this Section 8(c), but may
         employ separate counsel and participate in the defense thereof, but the
         fees and expenses of such counsel, except as provided below, shall be
         at the expense of the Holder). Any indemnified party shall have the
         right to employ separate counsel in any such action and participate in
         the defense thereof, but the fees and expenses of such counsel shall be
         at the expense of the indemnified party unless (i) the employment of
         such counsel shall

                                       16
<PAGE>

         have been specifically authorized in writing by the indemnifying party,
         (ii) the indemnifying party shall have failed to assume the defense of
         such action or employ counsel reasonably satisfactory to the
         indemnified party or (iii) the named parties to any such action
         (including any impleaded parties) include both the indemnified party
         and the indemnifying party, and the indemnified party shall have been
         advised by such counsel that there may be one or more legal defenses
         available to it which are different from or additional to those
         available to the indemnifying party (in which case the indemnifying
         party shall not have the right to assume the defense of such action on
         behalf of the indemnified party). In any such case, the indemnifying
         party shall not, in connection with any one action or separate but
         substantially similar or related actions in the same jurisdiction
         arising out of the same general allegations or circumstances, be liable
         for the fees and expenses of more than one separate firm of attorneys
         (in addition to any local counsel) for all indemnified parties and all
         such fees and expenses shall be reimbursed as they are incurred. Such
         firm shall be designated in writing by a majority of the Holders, in
         the case of the parties indemnified pursuant to Section 8(a), and by
         the Issuers and Subsidiary Guarantors, in the case of parties
         indemnified pursuant to Section 8(b). The indemnifying party shall
         indemnify and hold harmless the indemnified party from and against any
         and all losses, claims, damages, liabilities and judgments by reason of
         any settlement of any action (i) effected with its written consent or
         (ii) effected without its written consent if the settlement is entered
         into more than twenty Business Days after the indemnifying party shall
         have received a request from the indemnified party for reimbursement
         for the fees and expenses of counsel (in any case where such fees and
         expenses are at the expense of the indemnifying party) and, prior to
         the date of such settlement, the indemnifying party shall have failed
         to comply with such reimbursement request. No indemnifying party shall,
         without the prior written consent of the indemnified party, effect any
         settlement or compromise of, or consent to the entry of judgment with
         respect to, any pending or threatened action in respect of which the
         indemnified party is or could have been a party and indemnity or
         contribution may be or could have been sought hereunder by the
         indemnified party, unless such settlement, compromise or judgment (i)
         includes an unconditional release of the indemnified party from all
         liability on claims that are or could have been the subject matter of
         such action and (ii) does not include a statement as to or an admission
         of fault, culpability or a failure to act, by or on behalf of the
         indemnified party.

                  (d) To the extent that the indemnification provided for in
         this Section 8 is unavailable to an indemnified party in respect of any
         losses, claims, damages, liabilities or judgments referred to therein,
         then each indemnifying party, in lieu of indemnifying such indemnified
         party, shall contribute to the amount paid or payable by such
         indemnified party as a result of such losses, claims, damages,
         liabilities or judgments (i) in such proportion as is appropriate to
         reflect the relative benefits received by the Issuers and the
         Subsidiary Guarantors, on the one hand, and the Holders, on the other
         hand, from their sale of Transfer Restricted Securities or (ii) if the
         allocation provided by clause 8(d)(i) is not permitted by applicable
         law, in such proportion as is appropriate to reflect not only the
         relative benefits referred to in clause 8(d)(i) above but also the
         relative fault of the Issuers and the Subsidiary Guarantors, on the one
         hand, and of the Holder, on the other hand, in connection with the
         statements or omissions which resulted in such losses, claims, damages,
         liabilities or judgments, as well as any other relevant equitable

                                       17
<PAGE>

         considerations. The relative fault of the Issuers and the Subsidiary
         Guarantors, on the one hand, and of the Holder, on the other hand,
         shall be determined by reference to, among other things, whether the
         untrue or alleged untrue statement of a material fact or the omission
         or alleged omission to state a material fact relates to information
         supplied by the Issuers or such Subsidiary Guarantor, on the one hand,
         or by the Holder, on the other hand, and the parties' relative intent,
         knowledge, access to information and opportunity to correct or prevent
         such statement or omission.

                  The Issuers, the Subsidiary Guarantors and each Holder agree
         that it would not be just and equitable if contribution pursuant to
         this Section 8(d) were determined by pro rata allocation (even if the
         Holders were treated as one entity for such purpose) or by any other
         method of allocation which does not take account of the equitable
         considerations referred to in the immediately preceding paragraph. The
         amount paid or payable by an indemnified party as a result of the
         losses, claims, damages, liabilities or judgments referred to in the
         immediately preceding paragraph shall be deemed to include, subject to
         the limitations set forth above, any legal or other expenses incurred
         by such indemnified party in connection with investigating or defending
         any matter, including any action that could have given rise to such
         losses, claims, damages, liabilities or judgments. Notwithstanding the
         provisions of this Section 8, no Holder, its directors, its officers or
         any Person, if any, who controls such Holder shall be required to
         contribute, in the aggregate, any amount in excess of the amount by
         which the total received by such Holder with respect to the sale of
         Transfer Restricted Securities pursuant to a Registration Statement
         exceeds (i) the amount paid by such Holder for such Transfer Restricted
         Securities and (ii) the amount of any damages which such Holder has
         otherwise been required to pay by reason of such untrue or alleged
         untrue statement or omission or alleged omission. No Person guilty of
         fraudulent misrepresentation (within the meaning of Section 11(f) of
         the Act) shall be entitled to contribution from any Person who was not
         guilty of such fraudulent misrepresentation. The Holders' obligations
         to contribute pursuant to this Section 8(d) are several in proportion
         to the respective principal amount of Transfer Restricted Securities
         held by each Holder hereunder and not joint.

         Section 9. Rule 144A and Rule 144. The Issuers and each Subsidiary
Guarantor agree with each Holder, for so long as any Transfer Restricted
Securities remain outstanding and during any period in which the Issuers or such
Subsidiary Guarantor (i) is not subject to Section 13 or 15(d) of the Exchange
Act, to make available, upon request of any Holder, to such Holder or beneficial
owner of Transfer Restricted Securities in connection with any sale thereof and
any prospective purchaser of such Transfer Restricted Securities designated by
such Holder or beneficial owner, the information required by Rule 144A(d)(4)
under the Act in order to permit resales of such Transfer Restricted Securities
pursuant to Rule 144A, and (ii) is subject to Section 13 or 15 (d) of the
Exchange Act, to make all filings required thereby in a timely manner in order
to permit resales of such Transfer Restricted Securities pursuant to Rule 144.

         Section 10. Miscellaneous.

                  (a) Remedies. The Issuers and the Subsidiary Guarantors
         acknowledge and agree that any failure by the Issuers and/or the
         Subsidiary Guarantors to comply with their respective obligations under
         Sections 3 and 4 hereof may result in material

                                       18
<PAGE>

         irreparable injury to the Initial Purchasers or the Holders for which
         there is no adequate remedy at law, that it will not be possible to
         measure damages for such injuries precisely and that, in the event of
         any such failure, the Initial Purchasers or any Holder may obtain such
         relief as may be required to specifically enforce the Issuers' and the
         Subsidiary Guarantors' obligations under Sections 3 and 4 hereof. The
         Issuers and the Subsidiary Guarantors further agree to waive the
         defense in any action for specific performance that a remedy at law
         would be adequate.

                  (b) No Inconsistent Agreements. Neither the Issuers nor any
         Subsidiary Guarantor will, on or after the date of this Agreement,
         enter into any agreement with respect to its securities that is
         inconsistent with the rights granted to the Holders in this Agreement
         or otherwise conflicts with the provisions hereof. Neither the Issuers
         nor any Subsidiary Guarantor have previously entered into any agreement
         granting any registration rights with respect to its securities to any
         Person other than the registration rights (i) of El Paso Energy
         Partners Company and its affiliates in Section 6.14 of the Partnership
         Agreement, (ii) of EPEC Deepwater Gathering Company ("EPEC") and its
         successors pursuant to a registration rights agreement between EPEC and
         the Partnership which was executed in connection with the acquisition
         by the Partnership of an additional interest in Viosca Knoll Gathering
         Company, (iii) of Crystal Gas Storage, Inc. ("Crystal") pursuant to the
         registration rights agreement dated as of August 28, 2000 between
         Crystal and the Partnership which was executed in connection with the
         acquisition by the Partnership of the Crystal storage facilities and
         (iv) granted under the Partnership Credit Facility (as amended,
         restated and otherwise supplemented through the date hereof) and
         related agreements and (v) granted pursuant to this Agreement. The
         rights granted to the Holders hereunder do not in any way conflict with
         and are not inconsistent with the rights granted to the holders of the
         Issuers' and the Subsidiary Guarantors' securities under any agreement
         in effect on the date hereof.

                  (c) Amendments and Waivers. The provisions of this Agreement
         may not be amended, modified or supplemented, and waivers or consents
         to or departures from the provisions hereof may not be given unless (i)
         in the case of Section 5 hereof and this Section 10(c)(i), the Issuers
         have obtained the written consent of Holders of all outstanding
         Transfer Restricted Securities and (ii) in the case of all other
         provisions hereof, the Issuers have obtained the written consent of
         Holders of a majority of the outstanding principal amount of Transfer
         Restricted Securities (excluding Transfer Restricted Securities held by
         the Issuers or their Affiliates). Notwithstanding the foregoing, a
         waiver or consent to departure from the provisions hereof that relates
         exclusively to the rights of Holders whose Transfer Restricted
         Securities are being tendered pursuant to the Exchange Offer, and that
         does not affect directly or indirectly the rights of other Holders
         whose Transfer Restricted Securities are not being tendered pursuant to
         such Exchange Offer, may be given by the Holders of a majority of the
         outstanding principal amount of Transfer Restricted Securities subject
         to such Exchange Offer.

                  (d) Third Party Beneficiary. The Holders shall be third party
         beneficiaries to the agreements made hereunder between the Issuers and
         the Subsidiary Guarantors, on the one hand, and the Initial Purchasers,
         on the other hand, and shall have the right to

                                       19
<PAGE>

         enforce such agreements directly to the extent they may deem such
         enforcement necessary or advisable to protect its rights or the rights
         of Holders hereunder.

                  (e) Notices. All notices and other communications provided for
         or permitted hereunder shall be made in writing by hand-delivery,
         first-class mail (registered or certified, return receipt requested),
         telex, telecopier, or air courier guaranteeing overnight delivery:

                           (i) if to a Holder, at the address set forth on the
                  records of the Registrar under the Indenture, with a copy to
                  the Registrar under the Indenture; and

                           (ii) if to the Issuers or the Subsidiary Guarantors:

                                El Paso Energy Partners, L.P.
                                4 Greenway Plaza
                                Houston, Texas 77046
                                Telecopier No.: (713) 420-5477
                                Attention: Chief Financial Officer

                                With a copy to:
                                Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                                711 Louisiana Street, Suite 1900
                                Houston, Texas 77002
                                Telecopier No.: (713) 236-0822
                                Attention: J. Vincent Kendrick

                  All such notices and communications shall be deemed to have
         been duly given: at the time delivered by hand, if personally
         delivered; five Business Days after being deposited in the mail,
         postage prepaid, if mailed; when receipt acknowledged, if telecopied;
         and on the next Business Day, if timely delivered to an air courier
         guaranteeing overnight delivery.

                  Copies of all such notices, demands or other communications
         shall be concurrently delivered by the Person giving the same to the
         Trustee at the address specified in the Indenture.

                  (f) Successors and Assigns. This Agreement shall inure to the
         benefit of and be binding upon the successors and assigns of each of
         the parties, including without limitation and without the need for an
         express assignment, subsequent Holders; provided, that nothing herein
         shall be deemed to permit any assignment, transfer or other disposition
         of Transfer Restricted Securities in violation of the terms hereof or
         of the Purchase Agreement or the Indenture. If any transferee of any
         Holder shall acquire Transfer Restricted Securities in any manner,
         whether by operation of law or otherwise, such Transfer Restricted
         Securities shall be held subject to all of the terms of this Agreement,
         and by taking and holding such Transfer Restricted Securities such
         Person shall be conclusively deemed to have agreed to be bound by and
         to perform all of the

                                       20
<PAGE>

         terms and provisions of this Agreement, including the restrictions on
         resale set forth in this Agreement and, if applicable, the Purchase
         Agreement, and such Person shall be entitled to receive the benefits
         hereof.

                  (g) Counterparts. This Agreement may be executed in any number
         of counterparts and by the parties hereto in separate counterparts,
         each of which when so executed shall be deemed to be an original and
         all of which taken together shall constitute one and the same
         agreement.

                  (h) Headings. The headings in this Agreement are for
         convenience of reference only and shall not limit or otherwise affect
         the meaning hereof.

                  (i) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND
         CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT
         REGARD TO THE CONFLICT OF LAW RULES THEREOF.

                  (j) Severability. In the event that any one or more of the
         provisions contained herein, or the application thereof in any
         circumstance, is held invalid, illegal or unenforceable, the validity,
         legality and enforceability of any such provision in every other
         respect and of the remaining provisions contained herein shall not be
         affected or impaired thereby.

                  (k) Entire Agreement. This Agreement is intended by the
         parties as a final expression of their agreement and intended to be a
         complete and exclusive statement of the agreement and understanding of
         the parties hereto in respect of the subject matter contained herein.
         There are no restrictions, promises, warranties or undertakings, other
         than those set forth or referred to herein with respect to the
         registration rights granted with respect to the Transfer Restricted
         Securities. This Agreement supersedes all prior agreements and
         understandings between the parties with respect to such subject matter.

                                     * * * *

                                       21
<PAGE>

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

                             Issuers:

                             EL PASO ENERGY PARTNERS, L.P.

                             By:     /s/ KEITH FORMAN
                                     ------------------------------------------
                             Name:   Keith Forman
                             Title:  Vice President and Chief Financial Officer

                             EL PASO ENERGY PARTNERS FINANCE
                                       CORPORATION

                             By:     /s/ KEITH FORMAN
                                     -------------------------------------------
                             Name:   Keith Forman
                             Title:  Vice President and Chief Financial Officer

<PAGE>

                             Subsidiary Guarantors:

                             ARGO, L.L.C.*
                             ARGO I, L.L.C.*
                             ARGO II, L.L.C.*
                             THE CHACO LIQUIDS PLANT TRUST,
                                     By EL PASO ENERGY PARTNERS OPERATING
                                     COMPANY, L.L.C., solely in its capacity as
                                     trustee of the Chaco Liquids Plant Trust*
                             CRYSTAL HOLDING, L.L.C.*
                             DELOS OFFSHORE COMPANY, L.L.C.*
                             EAST BREAKS GATHERING COMPANY, L.L.C.*
                                     By EL PASO ENERGY PARTNERS DEEPWATER,
                                     L.L.C., as sole member*
                             EL PASO ENERGY PARTNERS DEEPWATER, L.L.C.*
                             EL PASO ENERGY PARTNERS OIL TRANSPORT, L.L.C.*
                             EL PASO ENERGY PARTNERS OPERATING COMPANY,
                                     L.L.C.*
                             EPN NGL STORAGE, L.L.C.*
                             FIRST RESERVE GAS, L.L.C.*
                             FLEXTREND DEVELOPMENT COMPANY, L.L.C.*
                             GREEN CANYON PIPE LINE COMPANY, L.P.*
                             HATTIESBURG GAS STORAGE COMPANY*
                             HATTIESBURG INDUSTRIAL GAS SALES, L.L.C.*
                             HIGH ISLAND OFFSHORE SYSTEM, L.L.C.*
                                     By EL PASO ENERGY PARTNERS DEEPWATER,
                                     L.L.C., as sole member*
                             MANTA RAY GATHERING COMPANY, L.L.C.*
                             PETAL GAS STORAGE, L.L.C.*
                             POSEIDON PIPELINE COMPANY, L.L.C.*
                             VK DEEPWATER GATHERING COMPANY, L.L.C.*
                             VK-MAIN PASS GATHERING COMPANY, L.L.C.*

                             *By:    /s/ KEITH FORMAN
                                     -------------------------------------------
                             Name:   Keith Forman
                             Title:  Vice President and Chief Financial Officer

                                       23
<PAGE>

                             Initial Purchasers:

                             CREDIT SUISSE FIRST BOSTON CORPORATION
                             GOLDMAN, SACHS & CO.
                             J.P. MORGAN SECURITIES INC.
                             BANC ONE CAPITAL MARKETS, INC.
                             FLEET SECURITIES, INC.
                             FORTIS INVESTMENT SERVICES LLC
                             THE ROYAL BANK OF SCOTLAND PLC
                             BNP PARIBAS SECURITIES CORP.
                             FIRST UNION SECURITIES, INC.

                             By: CREDIT SUISSE FIRST BOSTON

                             By:     /s/ TOWNES G. PRESSLER, JR.
                                     -------------------------------------------
                             Name:   Townes G. Pressler, Jr.
                             Title:  Managing Director

                                       24
<PAGE>

                                   SCHEDULE A

<Table>
<Caption>
        NAME OF SUBSIDIARY GUARANTOR                                                STATE OF ORGANIZATION
        ----------------------------                                                ---------------------
<S>                                                                                 <C>
        Argo, L.L.C.                                                                      Delaware
        Argo I, L.L.C.                                                                    Delaware
        Argo II, L.L.C.                                                                   Delaware
        The Chaco Liquids Plant Trust                                                   Massachusetts
        Crystal Holding, L.L.C.                                                           Delaware
        Delos Offshore Company, L.L.C.                                                    Delaware
        East Breaks Gathering Company, L.L.C.                                             Delaware
        El Paso Energy Partners Deepwater, L.L.C.                                         Delaware
        El Paso Energy Partners Oil Transport, L.L.C.                                     Delaware
        El Paso Partners Operating Company, L.L.C.                                        Delaware
        EPN NGL Storage, L.L.C.                                                           Delaware
        First Reserve Gas, L.L.C.                                                         Delaware
        Flextrend Development Company, L.L.C.                                             Delaware
        Green Canyon Pipe Line Company, L.P.                                              Delaware
        Hattiesburg Gas Storage Company                                                   Delaware
        Hattiesburg Industrial Gas Sales, L.L.C.                                          Delaware
        High Island Offshore System, L.L.C.                                               Delaware
        Manta Ray Gathering Company, L.L.C.                                               Delaware
        Petal Gas Storage, L.L.C.                                                         Delaware
        Poseidon Pipeline Company, L.L.C.                                                 Delaware
        VK Deepwater Gathering Company, L.L.C.                                            Delaware
        VK-Main Pass Gathering Company, L.L.C.                                            Delaware
</Table>

                                       25Prepared by R.R. Donnelley Financial -- Amend. to Incentive Stock Option Plan

  
 AMENDMENT 
 TO 
 EMBREX, INC. 
 INCENTIVE STOCK OPTION
AND 
 NONSTATUTORY STOCK OPTION PLAN (JUNE 1993) 
 (Amended and
Restated as of July 2002) 
  
 THIS AMENDMENT to the Embrex, Inc. Incentive Stock Option and Nonstatutory Stock
Option Plan (June 1993) (the “Plan”) is made effective as of the 16th day of May, 2002.

  
 WHEREAS, the Plan was previously amended and restated in July 2000; 
  
 WHEREAS, the Board of Directors of Embrex, Inc. (the “Company”) has determined that it would be in the best interests of the
Company and its shareholders to further amend the Plan to increase the number of shares of the Company’s Common Stock that may be issued under the Plan from 2,600,000 to 3,400,000; 
  
 WHEREAS, on February 21, 2002, the Board of Directors approved, subject to shareholder approval, an amendment to the Plan to increase the number of shares of Common Stock
that may be issued under the Plan from 2,600,000 to 3,400,000 and recommended that the shareholders approve the proposed amendment; and 
  
 WHEREAS, the Company’s shareholders approved the proposed amendment to the Plan at the Company’s Annual Meeting of Shareholders held on May 16, 2002; 
  
 NOW, THEREFORE, pursuant to Section 19 of the Plan, the Plan is hereby amended by deleting the second sentence of Section 4 in its entirety and replacing it with the
following: 
  
 “Subject to adjustment as provided in Section 14 of the Plan, the maximum number of shares of
Common Stock of the Company which may be issued and sold under the Plan is Three Million Four Hundred Thousand (3,400,000) shares.” 
  
 This Amendment is limited as specified and shall not constitute a modification or amendment of any other provision of the Plan or any option agreement issued pursuant to the Plan. 
  
 Approved by the Board of Directors on February 21, 2002, and approved by the shareholders on May 16, 2002. 
  
 
	 ATTESTED BY:
 
	 
	     /s/    DON T. SEAQUIST
 

	 Don T. Seaquist
 Secretary

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