Document:

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                                                                   EXHIBIT 10.18

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                                FEDERAL AND STATE
                           TAX REIMBURSEMENT AGREEMENT

                                      AMONG

                               EL PASO CORPORATION

                                       AND

                             THE CONTROLLED ENTITIES

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                                TABLE OF CONTENTS

ARTICLE I DEFINITIONS........................................................1
   1.01     Definitions......................................................1
   1.02     Construction.....................................................2

ARTICLE II TAX BILLING AGREEMENT.............................................2
   2.01     Invoicing of Controlled Entities for Allocable Taxes.............2
   2.02     Reimbursement Amount.............................................3
   2.03     Disputed Charges.................................................3
   2.04     Set Off..........................................................3

ARTICLE III ASSIGNMENTS, SUBCONTRACTS AND PERFORMANCE OF SERVICES............4
   3.01     Assignments......................................................4
   3.02     Performance of Services..........................................4

ARTICLE IV LIMITATION ON LIABILITY...........................................4

ARTICLE V DISPUTE RESOLUTION.................................................4
   5.01     Disputes.........................................................4
   5.02     Negotiation to Resolve Disputes..................................4
   5.03     Selection of Arbitrator..........................................5
   5.04     Conduct of Arbitration...........................................5

ARTICLE VI TERMINATION.......................................................6
   6.01     Termination......................................................6
   6.02     Effect of Termination............................................6

ARTICLE VII GENERAL PROVISIONS...............................................6
   7.01     Notices..........................................................6
   7.02     Entire Agreement; Superseding Effect.............................7
   7.03     Effect of Waiver or Consent......................................7
   7.04     Amendment or Restatement.........................................7
   7.05     Restriction on Assignment; Binding Effect........................7
   7.06     Governing Law; Severability......................................7
   7.07     Further Assurances...............................................8
   7.08     Directly or Indirectly...........................................8
   7.09     Counterparts.....................................................8
   7.10     Additional members of affiliated group...........................8

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                                FEDERAL AND STATE
                           TAX REIMBURSEMENT AGREEMENT

         THIS AGREEMENT ("Agreement"), dated as of this the 22nd day of May,
2003 ("Effective Date"), is by and among El Paso Corporation, a Delaware
corporation ("El Paso"), and each of the entities listed on the signature
page(s) of this Agreement under the column entitled "Controlled Group Entities"
(collectively, the "Controlled Entities" and, together with El Paso, the
"Parties").

                                R E C I T A L S:

         WHEREAS, El Paso is a holding company that owns, directly or
indirectly, voting securities in numerous subsidiaries and affiliates; and

         WHEREAS, a substantial number of such subsidiaries and affiliates are
members of an affiliated group of which El Paso is the common parent and that
files a consolidated federal income tax return with El Paso (and files similar
group returns under applicable state tax laws); and

         WHEREAS, El Paso customarily pays the federal, state and local income
taxes that are due and payable by its consolidated tax group, and requires each
member of such group to reimburse El Paso for its proportionate share as
determined in accordance with the applicable tax policy or policies that El Paso
has in effect from time to time; and

         WHEREAS, El Paso has determined to evidence such reimbursement policy
by entering into an agreement with each member of its consolidated group on the
terms set forth in (or consistent with those set forth in) this Agreement (with
such modifications thereto as El Paso determined to be appropriate; and

         WHEREAS, El Paso and the Controlled Entities have agreed to enter into
this Agreement for the purposes referred to above;

         NOW, THEREFORE, for and in consideration of the agreements set forth
herein and such other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the Parties agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

         1.01 DEFINITIONS. As used in this Agreement, the following terms have
the respective meanings set forth below or set forth in the Sections referred to
below:

         "AFFILIATE" shall mean with respect to any Person, any other Person
that directly or indirectly through one or more intermediaries, controls, is
controlled by, or is under common control with, such specified Person. For
purposes of this definition, "control" when used with respect to any Person
means the power to direct the management and policies of such Person, directly
or indirectly, through the ownership of voting securities, by contract or
otherwise.

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         "AGREEMENT" is defined in the introductory paragraph.

         "ARBITRATION NOTICE" is defined in Section 5.02 (c).

         "ARBITRATOR" is defined in Section 5.03(a).

         "CONTROLLED ENTITIES" is defined in the introductory paragraph.

         "DEFAULT RATE" shall mean an interest rate (which shall in no event be
higher than the rate permitted by applicable law) equal to 300 basis points over
LIBOR.

         "DISPUTE" is defined in Section 5.01.

         "EFFECTIVE DATE" is defined in the introductory paragraph.

         "EL PASO" is defined in the introductory paragraph.

         "PARTIES" is defined in the introductory paragraph.

         "PERSON" means any individual, corporation, partnership, joint venture,
trust, limited liability company, association, unincorporated organization or
other entity.

         "POLICIES" is defined in Section 2.01.

         "REIMBURSEMENT AMOUNT" is defined in Section 2.02.

         "RETURNS" is defined in Section 2.01.

         Other terms defined herein have the meanings so given them.

         1.02 CONSTRUCTION. Unless the context requires otherwise: (a) the
gender (or lack of gender) of all words used in this Agreement includes the
masculine, feminine, and neuter; (b) references to Articles and Sections refer
to Articles and Sections of this Agreement; (c) references to Exhibits refer to
the Exhibits attached to this Agreement, each of which is made a part hereof for
all purposes; and (d) references to money refer to legal currency of the United
States of America.

                                   ARTICLE II
                              TAX BILLING AGREEMENT

         2.01 INVOICING OF CONTROLLED ENTITIES FOR ALLOCABLE TAXES. At such time
as El Paso files its annual consolidated U.S. federal income tax return or any
of the various annual state income tax returns (the "Returns") and upon
subsequent amendments to, audit settlements of, or carrybacks to those Returns,
or at such other time as is required under the Policies then in effect, El Paso
may invoice or credit the Controlled Entities for the related balance in their
respective accrued income tax accounts as computed under the El Paso Corporation
and Consolidated Subsidiaries Accounting Policy for the Accrual of U.S. Federal
Income Taxes (a copy of which is attached hereto as Annex I; the "Federal
Policy") and the Intercompany State Income Tax Allocation and Payments Policy (a
copy of which is attached as

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Annex II; the "State Policy" and, together with the Federal Policy, the
"Policies"). In the circumstance where a Controlled Entity is not consolidated
for GAAP purposes but is included in any Return, El Paso may invoice each
Controlled Entity for the balance in its accrued income tax accounts, as
computed under the Policies, on a quarterly basis. At any time during the term
of this Agreement El Paso may amend, modify or restate either of the Policies
and, at such time as El Paso delivers to the Controlled Entities a copy of such
amended, modified or restated policy it shall be added to or substituted for the
Policy so amended, modified or restated and the Parties shall cause same to be
attached as an Annex hereto (but the failure to so attach same shall not cause
any of the Parties not to be bound thereby). From and after the receipt by the
Controlled Entities of an amendment or modification to, or restatement of, a
Policy, such Policy shall be deemed so amended, modified or restated.

         2.02 REIMBURSEMENT AMOUNT. The amount invoiced to a Controlled Entity
in accordance with Section 2.01 that, as of the date of determination remains
unpaid, is referred to herein as the "Reimbursement Amount." The Reimbursement
Amount shall be settled by a Controlled Entity either (i) by transfer of funds
from such Controlled Entity pursuant to the cash management policy then in
effect between El Paso and such Controlled Entity (as such cash management
policy may be amended from time to time during the term of this Agreement) or
(ii) if a cash management policy is not then in effect between such Controlled
Entity and El Paso or such Controlled Entity is prohibited from accessing or
otherwise utilizing same, such Controlled Entity shall pay such Reimbursement
Amount to El Paso by check payable in immediately available funds or by wire
transfer to an account specified by El Paso of immediately available funds.

         2.03 DISPUTED CHARGES. ANY CONTROLLED ENTITY MAY, WITHIN ONE YEAR AFTER
RECEIPT OF THE INTERCOMPANY ACCOUNT CHARGE FROM EL PASO, TAKE WRITTEN EXCEPTION
TO SUCH CHARGE, ON THE GROUND THAT THE SAME WAS NOT A PROPER ALLOCATION IN
ACCORDANCE WITH THE APPLICABLE POLICY THEN IN EFFECT. SUCH CONTROLLED ENTITY
SHALL NEVERTHELESS PAY IN FULL WHEN DUE THE FULL REIMBURSEMENT AMOUNT INVOICED
TO SUCH CONTROLLED ENTITY BY EL PASO. SUCH PAYMENT SHALL NOT BE DEEMED A WAIVER
OF THE RIGHT OF SUCH CONTROLLED ENTITY TO RECOUP ANY CONTESTED PORTION OF ANY
AMOUNT SO CHARGED. HOWEVER, IF THE AMOUNT AS TO WHICH SUCH WRITTEN EXCEPTION IS
TAKEN, OR ANY PART THEREOF, IS ULTIMATELY DETERMINED NOT TO BE SUCH CONTROLLED
ENTITY'S ALLOCABLE SHARE OF TAXES IN ACCORDANCE WITH THE POLICIES APPLICABLE
THERETO, SUCH AMOUNT OR PORTION THEREOF (AS THE CASE MAY BE) SHALL BE REFUNDED
BY EL PASO TO SUCH CONTROLLED ENTITY TOGETHER WITH INTEREST THEREON AT THE
DEFAULT RATE DURING THE PERIOD FROM THE DATE OF PAYMENT BY SUCH CONTROLLED
ENTITY TO THE DATE OF REFUND BY EL PASO.

         2.04 SET OFF. If any amount is currently due and owing by El Paso to
any Controlled Entity under any other agreement between the Parties, then any
such amounts shall be aggregated and such Controlled Entity and El Paso shall
discharge their obligations by netting those amounts against any amounts owed by
such Controlled Entity to El Paso under this

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Agreement. If any Controlled Entity or El Paso owes the other Party a greater
aggregate amount, that Party shall pay to the other Party the difference between
the amounts owed.

                                  ARTICLE III
              ASSIGNMENTS, SUBCONTRACTS AND PERFORMANCE OF SERVICES

         3.01 ASSIGNMENTS.

              (a) Without the prior consent of El Paso, none of the Controlled
Entities may sell, assign, transfer or convey any of its rights, or delegate any
of its obligations, under this Agreement to any Person.

              (b) Without the prior consent of a Controlled Entity, El Paso may
not sell, assign, transfer or convey of any of its rights of, or delegate any of
its obligations to, such Controlled Entity under this Agreement to any Person.

         3.02 PERFORMANCE OF SERVICES. Subject to the other provisions hereof,
El Paso agrees to use its reasonable efforts to prepare and file such Return and
take all other actions necessary or appropriate in connection therewith in a
reasonable, prudent and timely manner.

                                   ARTICLE IV
                             LIMITATION ON LIABILITY

         In no event shall either El Paso or any Controlled Entity have any
liability to the other for any incidental, indirect, special or consequential
damages, whether or not caused by or resulting from negligence or breach of
obligations hereunder and whether or not informed of the possibility of the
existence of such damages.

                                   ARTICLE V
                               DISPUTE RESOLUTION

         5.01 DISPUTES. This Article V shall apply to any dispute arising under
or related to this Agreement (whether arising in contract, tort or otherwise,
and whether arising at law or in equity), including (a) any dispute regarding
the construction, interpretation, performance, validity or enforceability of any
provision of this Agreement or whether any Person is in compliance with, or
breach of, any provisions of this Agreement, and (b) the applicability of this
Article V to a particular dispute (collectively, a "Dispute"). The provisions of
this Article V shall be the exclusive method of resolving Disputes. For purposes
of this Article V, each of El Paso, on the one hand, and any Controlled Entity
or Controlled Entities involved in the Dispute, on the other hand, shall be a
"Participant".

         5.02 NEGOTIATION TO RESOLVE DISPUTES. If a Dispute arises which is not
resolved in 30 days, the Participants shall attempt to resolve such Dispute
through the following procedure:

              (a) first, an executive officer of each of the Participants shall
promptly meet (whether by phone or in person) in a good faith attempt to resolve
the Dispute;

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              (b) second, if the Dispute is still unresolved after 20 days
following the commencement of the negotiations described in Section 5.02(a),
then the chief executive officers of each of the Participants will promptly meet
(whether by phone or in person) in a good faith attempt to resolve the Dispute;
and

              (c) third, if the Dispute is still unresolved after 10 days
following the commencement of the negotiations described in Section 5.02(b),
then any Participant may submit such Dispute to binding arbitration under this
Article V by notifying the other Participant (an "Arbitration Notice").

         5.03 SELECTION OF ARBITRATOR.

              (a) Any arbitration conducted under this Article V shall be heard
by a sole arbitrator (the "Arbitrator") selected in accordance with this Section
5.03. Each Participant and each proposed Arbitrator shall disclose to the other
Participants any business, personal or other relationship or affiliation that
may exist between such Participant and such proposed Arbitrator, and any
Participant may disapprove of such proposed Arbitrator on the basis of such
relationship or affiliation.

              (b) The Participant that submits a Dispute to arbitration shall
designate a proposed Arbitrator in its Arbitration Notice. If any other
Participant objects to such proposed Arbitrator, it may, on or before the 10th
day following delivery of the Arbitration Notice, notify the other Participants
of such objection. The Participants shall attempt to agree upon a
mutually-acceptable Arbitrator. If they are unable to do so within 20 days
following delivery of the notice described in the immediately-preceding
sentence, any Participant may request the American Arbitration Association
("AAA") to designate the Arbitrator. If the Arbitrator so chosen shall die,
resign or otherwise fail or becomes unable to serve as Arbitrator, a replacement
Arbitrator shall be chosen in accordance with this Section 5.03.

         5.04 CONDUCT OF ARBITRATION. The Arbitrator shall expeditiously (and,
if possible, within 90 days after the Arbitrator's selection) hear and decide
all matters concerning the Dispute. Except as the Participants agree otherwise,
the arbitration hearing shall be held in the City of Houston, Texas and such
arbitration shall be conducted in accordance with the then-current Commercial
Arbitration Rules of the AAA (excluding rules governing the payment of
arbitration, administrative or other fees or expenses to the Arbitrator or the
AAA), to the extent that such rules do not conflict with the terms of this
Agreement. Except as expressly provided to the contrary in this Agreement, the
Arbitrator shall have the power (a) to gather such materials, information,
testimony and evidence in the manner as it deems appropriate relevant to the
dispute before it (and each Participant will provide such materials,
information, testimony and evidence requested by the Arbitrator, except to the
extent any information so requested is proprietary, subject to a third-party
confidentiality restriction or to an attorney-client or other privilege) and (b)
to grant injunctive relief and enforce specific performance. If it deems
necessary, the Arbitrator may propose to the Participants that one or more other
experts be retained to assist it in resolving the Dispute. The retention of such
other experts shall require the unanimous consent of the Participants, which
shall not be unreasonably withheld. Each Participant, the Arbitrator and any
proposed expert shall disclose to each other any business, personal or other
relationship or affiliation that may exist between such Participant (or the

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Arbitrator) and such proposed expert; and any Participant may disapprove of such
proposed expert on the basis of such relationship or affiliation. The decision
of the Arbitrator (which shall be rendered in writing) shall be final,
nonappealable and binding upon the Participants and may be enforced in any court
of competent jurisdiction; provided that the Participants agree that the
Arbitrator and any court enforcing the award of the Arbitrator shall not have
the right or authority to award punitive or exemplary damages to any
Participant. The responsibility for paying the costs and expenses of the
arbitration, including compensation to the Arbitrator and any experts retained
by the Arbitrator, shall be allocated between the Participants in a manner
determined by the Arbitrator to be fair and reasonable under the circumstances.
Each Participant shall be responsible for the fees and expenses of its
respective counsel, consultants and witnesses, unless the Arbitrator determines
that compelling reasons exist for allocating all or a portion of such costs and
expenses in another manner. Any costs or expenses incurred by a Participant(s)
in enforcing any award of the Arbitrator shall be borne by the Participant
challenging the enforcement.

                                   ARTICLE VI
                                   TERMINATION

         6.01 TERMINATION. This Agreement shall terminate upon the first to
occur of (i) as to any Controlled Entity, 90 days after El Paso delivers written
notice of termination to such Controlled Entity, (ii) as to any Controlled
Entity, upon such Controlled Entity ceasing to be a member of the affiliated
group of which El Paso is the common parent, and (iii) as to any Controlled
Entity, mutual agreement of El Paso and such Controlled Entity.

         6.02 EFFECT OF TERMINATION. If this Agreement is terminated in
accordance with Section 6.01 as to any Controlled Entity, all rights and
obligations under this Agreement in respect of such Controlled Entity shall
cease except for (a) obligations that expressly survive termination of this
Agreement; (b) liabilities and obligations that have accrued prior to such
termination, including the obligation to pay any amounts that have become due
and payable prior to such termination, and (c) the obligation to pay any portion
of the Reimbursement Amount that has accrued prior to such termination, even if
such portion has not become due and payable at that time.

                                  ARTICLE VII
                               GENERAL PROVISIONS

         7.01 NOTICES. Except as expressly set forth to the contrary in this
Agreement, all notices, requests or consents provided for or permitted to be
given under this Agreement must be in writing and must be delivered to the
recipient in person, by courier or mail or by facsimile, telegram, telex,
cablegram or similar transmission; and a notice, request or consent given under
this Agreement is effective on receipt by the Party to receive it; provided,
however, that a facsimile or other electronic transmission that is transmitted
after the normal business hours of the recipient shall be deemed effective on
the next Business Day. All notices, requests and consents to be sent to El Paso
must be sent to or made at the address given below for El Paso, or such other
address as El Paso may specify by notice to the Controlled Entities. All
notices, requests and consents (including copies thereof) to be sent to any
Controlled Entity must be sent

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to or made at the address given below for the Controlled Entities, or such other
address as such Controlled Entity may specify by notice to El Paso.

         Address for Notices:

         If to any of the Controlled Entities, to:

         [NAME OF CONTROLLED ENTITY]
         c/o El Paso Production Holding Company
         Nine Greenway Plaza
         Houston, Texas  77046
         Attention:
                     ---------------------------------------------
         Facsimile:  (   )
                      --- ----------------------------------------

         If to El Paso, to:

         El Paso Corporation
         1001 Louisiana Street
         Houston, Texas  77002
         Attention:
                     ---------------------------------------------
         Facsimile:  (   )
                      --- ----------------------------------------

         7.02 ENTIRE AGREEMENT; SUPERSEDING EFFECT. This Agreement constitutes
the entire agreement of the Parties relating to the matters contained herein,
superseding all prior contracts or agreements, whether oral or written, relating
to the matters contained herein.

         7.03 EFFECT OF WAIVER OR CONSENT. Except as otherwise provided in this
Agreement, a waiver or consent, express or implied, to or of any breach or
default by any Party in the performance by that Party of its obligations under
this Agreement is not a consent or waiver to or of any other breach or default
in the performance by that Party of the same or any other obligations of that
Party under this Agreement. Except as otherwise provided in this Agreement,
failure on the part of a Party to complain of any act of another Party or to
declare another Party in default under this Agreement, irrespective of how long
that failure continues, does not constitute a waiver by that Party of its rights
with respect to that default until the applicable statute-of-limitations period
has run.

         7.04 AMENDMENT OR RESTATEMENT. This Agreement may be amended or
restated only by a written instrument executed by each of the Parties.

         7.05 RESTRICTION ON ASSIGNMENT; BINDING EFFECT. Subject to Article III,
this Agreement is binding on and shall inure to the benefit of the Parties and
their respective successors and permitted assigns.

         7.06 GOVERNING LAW; SEVERABILITY. THIS AGREEMENT IS GOVERNED BY AND
SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS, EXCLUDING
ANY CONFLICT-OF-LAWS RULE OR PRINCIPLE THAT MIGHT REFER THE CONSTRUCTION OR THE
INTERPRETATION OF THIS

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AGREEMENT TO THE LAW OF ANOTHER JURISDICTION. If any provision of this Agreement
or the application thereof to any Person or any circumstance is held invalid or
unenforceable to any extent, the remainder of this Agreement and the application
of such provision to other Persons or circumstances shall not be affected
thereby and shall be enforced to the greatest extent permitted by law.

         7.07 FURTHER ASSURANCES. In connection with this Agreement and the
transactions contemplated hereby, each Party shall execute and deliver any
additional documents and instruments and perform any additional acts that may be
necessary or appropriate to effectuate and perform the provisions of this
Agreement and those transactions.

         7.08 DIRECTLY OR INDIRECTLY. Where any provision of this Agreement
refers to action to be taken by any Party, or which such Party is prohibited
from taking, such provision shall be applicable whether such action is taken
directly or indirectly by such Party, including actions taken by or on behalf of
any Affiliate of such Party.

         7.09 COUNTERPARTS. This Agreement may be executed in counterparts with
the same effect as if each signing party had signed the same document. All
counterparts shall be construed together and shall constitute one and the same
instrument.

         7.10 ADDITIONAL MEMBERS OF AFFILIATED GROUP. Members of the affiliated
group are deemed automatically bound by the provisions of this Agreement by
their joining in the filing of a consolidated federal income tax return.

                           [Signature Pages to Follow]

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         IN WITNESS WHEREOF, the Parties have executed this Agreement effective
as of the date first set forth above.

                                       EL PASO CORPORATION

                                       By: /s/ Norbert Grijalva
                                           -----------------------
                                       Name: Norbert Grijalva
                                       Title: Vice President

                                       THE CONTROLLED ENTITIES:

                                       EL PASO PRODUCTION HOLDING COMPANY

                                       By: /s/ Norbert Grijalva
                                          ------------------------
                                       Name: Norbert Grijalva
                                       Title: Vice President

                                       EL PASO PRODUCTION COMPANY

                                       By: /s/ Norbert Grijalva
                                          ------------------------
                                       Name: Norbert Grijalva
                                       Title: Vice President

                                       EL PASO PRODUCTION GOM, INC.

                                       By: /s/ Norbert Grijalva
                                          ------------------------
                                       Name: Norbert Grijalva
                                       Title: Vice President

                                       EL PASO ENERGY RATON, L.L.C.

                                       By: /s/ Norbert Grijalva
                                          ------------------------
                                       Name: Norbert Grijalva
                                       Title: Vice President, El Paso Production
                                              Company Managing Member of El Paso
                                              Energy Raton, L.L.C.

                                       VERMEJO MINERALS CORPORATION

                                       By: /s/ Norbert Grijalva
                                          ------------------------
                                       Name: Norbert Grijalva
                                       Title: Vice President

                                       9<PAGE>
                                                                   EXHIBIT 10.19

                EL PASO CORPORATION AND CONSOLIDATED SUBSIDIARIES
                             ACCOUNTING POLICY FOR
                    THE ACCRUAL OF U.S. FEDERAL INCOME TAXES

APPLICABILITY: This policy applies only to El Paso Corporation and those
subsidiaries that are included in the El Paso Corporation consolidated federal
income tax return. This document is effective January 1, 2002, and replaces both
the previous El Paso Corporation (successor to El Paso Natural Gas Company)
Income Tax Provision and Settlement Policy and The Coastal Corporation's Federal
Tax Allocation Agreement.

PURPOSE: To describe El Paso Corporation and Consolidated Subsidiaries' method
for complying with FAS 109, Paragraph 40, "Separate Financial Statements of a
Subsidiary" (allocation of income taxes).

REGULAR TAXABLE INCOME OR LOSS: The regular taxable income or loss of a company
is defined for the purposes of this document as its separate company taxable
income or loss plus consolidating adjustments for deductions attributable to the
company that are deducted in the consolidated income tax return but could not be
deducted on a separate company basis (charitable contributions, separate company
capital losses in excess of capital gains, etc.).

REGULAR TAX ON REGULAR TAXABLE INCOME OR LOSS AND TAX ON CAPITAL GAINS AND
LOSSES: Profit companies shall accrue current income tax in an amount equal to
their regular taxable income times the statutory income tax rate. Loss companies
shall accrue for the current income tax benefit resulting from the portion of
their losses that are utilized in the consolidated income tax return. The
portion of a loss company's losses that are utilized in the consolidated return
shall be determined by dividing that company's taxable loss by the total of all
loss companies' losses and multiplying the resulting percentage times the total
amount of loss companies' losses that are offset by the taxable income of profit
companies. Excess capital losses in the consolidated return shall be allocated
among the companies with separate company excess capital losses in a similar
manner. If capital gains are taxed at a different rate than ordinary taxable
income, then the current income tax of each company with capital gains or losses
will be adjusted to reflect that different rate to the extent that company's
capital gains or losses are utilized in the consolidated return.

REGULAR NOL AND CAPITAL LOSS CARRYBACKS TO PRECEDING YEARS: Any regular net
operating loss carried back to an earlier year shall be allocated among the loss
companies whose losses are eligible for inclusion in the carryback in a manner
similar to that described in the preceding paragraph for allocating the loss
companies losses that are offset by taxable income of profit companies in the
current year return. A similar allocation shall be made among companies with
excess capital losses for an excess capital loss carried back to a preceding
year. Such losses carried back to a preceding year shall be tax benefited at the
tax rates applicable to the year to which the losses are carried back.
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EL PASO CORPORATION & CONSOL. SUBS. TAX ACCRUAL POLICY
PAGE 2 OF 3

REGULAR NOL AND CAPITAL LOSS CARRYFORWARDS: To the extent a company's regular
taxable losses or capital losses were not utilized in the consolidated return
for the current year or carried back to a preceding year, the company shall
record a deferred income tax benefit at the enacted tax rate(s) for the year(s)
in which the loss carryforward is expected to be utilized in the consolidated
tax return.

ALTERNATIVE MINIMUM TAX AND ALTERNATIVE MINIMUM TAX CREDIT CARRYFORWARDS:
Starting with the income tax return for the year ending December 31, 2002,
alternative minimum tax and deferred tax for alternative minimum tax credit
carryforwards shall be recorded as per IRS proposed regulation Section
1.1502-55(h)(6) provided that the result is reasonable and equitable. The
current and deferred income tax effects of utilizing AMT credit carryforwards
generated in earlier tax years shall be recorded on the company where the
related deferred income tax asset resides. Changes in AMT generated due to RAR's
or carrybacks of ordinary, capital or AMTI losses will also be recorded on the
company where the AMT was previously recorded for that tax year.

SECTION 29 CREDITS: Regardless of whether or not it can utilized the Section 29
credit on a separate company basis, if a company generates a Section 29 credit
and:

      a.    The credit is utilized in the consolidated income tax return as a
            reduction of the consolidated income tax liability, then that
            company shall receive a current income tax benefit for the credit.

      b.    The credit is utilized by the consolidated group by conversion to
            AMT credit carryforward, then that company that generated the credit
            shall record the deferred tax applicable to the carryforward and
            shall not record a current income tax benefit.

      c.    The credit is not utilized as either a reduction of the consolidated
            income tax liability or by conversion to AMT credit carryforward
            (i.e., on a consolidated basis, the credit is lost), then that
            company shall not record any benefit whatsoever.

GENERAL BUSINESS CREDITS: Each company shall accrue a current tax benefit to the
extent its general business credits are utilized in the consolidated income tax
return. Deferred income taxes will not be recorded for general business credit
carryforwards unless such amounts become material in amount in the future. If
general business credit carryforwards become a material amount in the future,
deferred taxes will be recorded on the company that generated the credits.

VALUATION ALLOWANCES: When it is determined that a valuation allowance is
required for a deferred tax asset, that valuation allowance will be recorded
where the related deferred tax asset is recorded. In the case of net operating
loss and tax credit carryovers, the valuation allowance will be allocated, when
applicable, to the companies who have recorded the deferred tax assets for these
carryovers as per the sections "Regular NOL and Capital Loss Carryforwards",
"Section 29 Credits", "Alternative Minimum Tax and Alternative Minimum Tax
Credit Carryforwards", and "General Business Credits."

COMPANIES WITH DIVISIONS SEPARATELY IDENTIFIED IN THE GENERAL LEDGERS: The
designated corporate division of a company may accrue all of the current tax
expense, or benefit, equal to that company's regular taxable income or loss
times the statutory income
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EL PASO CORPORATION & CONSOL. SUBS. TAX ACCRUAL POLICY
PAGE 3 OF 3

tax rate and it may accrue the deferred taxes related to temporary adjustments.
However, when there are overriding external reporting requirements, or when
state tax laws require separate accounting for divisions, each division of a
company may accrue all of these tax expenses and benefits for the division. In
the case where the company is in a loss position, the designated corporate
division will make the necessary entries to properly classify tax loss
carryovers as per the policy, "Regular Tax on Regular Taxable Income or Loss and
Tax on Capital Gains and Losses", stated above. Similarly, any entries in
regards to loss carrybacks or carryforwards will be recorded on the designated
corporate division. The designated corporate division of a company shall also
record all Section 29 credits, general business credits and allocated AMT and
AMT credit carryforwards for that company.

This section does not apply to single-member LLC's. Their applicable tax items
are reflected on the books of the company owning the interest in the LLC.

PAID-IN CAPITAL - STOCK-BASED COMPENSATION: Under APB 25, certain stock-based
compensation transactions can be recorded as capital transactions for financial
purposes with no recognition of compensation expense in earnings. El Paso
currently accounts for non-qualified stock options, the portion of the increase
in market price of restricted stock that occurs after performance vesting is
achieved, dividends on restricted stock and non-qualified dispositions of stock
under the Employee Stock Purchase Plan in this manner when the appropriate
criteria are met. The company is entitled to deductions for these transactions
when the employees recognize their related ordinary income (i.e. when it is
included on their W-2's). We are required to record the tax benefit of these
deductions as a credit to paid-in capital instead of earnings.

It is our practice to take the deductions on the entity that employed the
employees that received the stock-based compensation that gave rise to the
deductions. The credit to paid-in capital will be made on the entity on which
the deduction is taken unless that entity is a non-taxable entity in which case
the credit to paid-in capital will be made on the company or companies that
record the income taxes for that entity's income.

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