Document:

Exhibit 10.1

EXHIBIT 10.1 
 
FIRST SUPPLEMENTAL INDENTURE 
 
This First Supplemental Indenture, dated as of March 31, 2003 (this “Supplemental Indenture” or
“Guarantee”), among PXP Gulf Coast Inc., a Delaware corporation (the “New Subsidiary Guarantor”), Plains Exploration & Production Company, a Delaware corporation (together with its successors and
assigns, the “Company”) and Plains E&P Company, a Delaware corporation (together with the Company, the “Issuers”), each other then existing Subsidiary Guarantor under the Indenture referred to
below, and JPMorgan Chase Bank, a New York banking corporation, as Trustee (the “Trustee”) under the Indenture referred to below. 
 
W I T N E S S E T H: 
 
WHEREAS, the Company, the Subsidiary Guarantors and the Trustee have heretofore executed and delivered an Indenture, dated as of July 3, 2002 (as
amended, supplemented, waived or otherwise modified, the “Indenture”), providing for the issuance of an aggregate principal amount of $200,000,000 of 8 3/4% Senior Subordinated Notes due 2012 of the Issuers (the
“Securities”); 
 
WHEREAS, Section
3.12 of the Indenture provides that the Company is required to cause each Restricted Subsidiary other than a Foreign Subsidiary created or acquired by the Company execute and deliver to the Trustee a Subsidiary Guarantee pursuant to which such
Subsidiary Guarantor will unconditionally Guarantee, on a joint and several basis with the other Subsidiary Guarantors, the full and prompt payment of the principal of, premium, if any, and interest on the Securities on a senior subordinated basis;
and 
 
WHEREAS, pursuant to Section 9.1 of the
Indenture, the Trustee and the Issuers are authorized to execute and deliver this Supplemental Indenture to amend the Indenture, without the consent of any Securityholder. 
 
NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which
is hereby acknowledged, the New Subsidiary Guarantor, the Issuers, the other Subsidiary Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Securities as follows: 
 
ARTICLE I 
 
Definitions 
 
SECTION 1.1 Defined Terms.    As used in this Subsidiary Guarantee, terms defined in the Indenture or in the preamble or
recital hereto are used herein as therein defined, except that the term “Holders” in this Guarantee shall refer to the term “Securityholders” as defined in the Indenture and the Trustee acting on
behalf or for the benefit of such Holders. The words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this
Supplemental Indenture as a whole and not to any particular section hereof. 

 
ARTICLE II 
 
Agreement to be Bound; Guarantee 
 
SECTION 2.1 Agreement to be Bound.    The New
Subsidiary Guarantor hereby becomes a party to the Indenture, as a Subsidiary Guarantor and as such will have all of the rights and be subject to all of the obligations and agreements of a Subsidiary Guarantor under the Indenture. The New Subsidiary
Guarantor agrees to be bound by all of the provisions of the Indenture applicable to a Subsidiary Guarantor and to perform all of the obligations and agreements of a Subsidiary Guarantor under the Indenture. 
 
SECTION 2.2 Guarantee.    The New Subsidiary
Guarantor hereby fully, unconditionally and irrevocably guarantees, as primary obligor and not merely as surety, jointly and severally with each other Subsidiary Guarantor, to each Holder of the Securities and the Trustee, the full and punctual
payment when due, whether at maturity, by acceleration, by redemption or otherwise, of the Obligations pursuant to Article X of the Indenture on a senior subordinated basis. 
 
ARTICLE III 
 
Miscellaneous 
 
SECTION 3.1 Notices.    All notices and other communications to the New Subsidiary Guarantor shall be given as provided
in the Indenture to the New Subsidiary Guarantor at the following address, with a copy to the Issuers as provided in the Indenture for notices to the Issuers: c/o Plains Exploration & Production Company, 500 Dallas Street, Suite 700, Houston,
Texas 77002, Attention: Timothy T. Stephens, General Counsel. 
 
SECTION 3.2 Parties.     Nothing expressed or mentioned herein is intended or shall be construed to give any Person, firm or corporation, other than the Holders and the Trustee, any legal or equitable
right, remedy or claim under or in respect of this Supplemental Indenture or the Indenture or any provision herein or therein contained. 
 
SECTION 3.3 Governing Law.    This Supplemental Indenture shall be governed by, and construed in accordance with, the
laws of the State of New York. 
 
SECTION 3.4 Severability
Clause.    In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired
thereby and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability. 
 
SECTION 3.5 Ratification of Indenture; Supplemental Indentures Part of Indenture.    Except as expressly amended hereby,
the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of
Securities heretofore or hereafter authenticated and delivered shall be bound hereby. 
 

2 

 
The Trustee makes no representation or
warranty as to the validity or sufficiency of this Supplemental Indenture. 
 
SECTION 3.6 Counterparts.    The parties hereto may sign one or more copies of this Supplemental Indenture in counterparts, all of which together shall constitute one and the same agreement. 
 
SECTION 3.7 Headings.    The headings of the
Articles and the sections in this Guarantee are for convenience of reference only and shall not be deemed to alter or affect the meaning or interpretation of any provisions hereof. 
 
[SIGNATURE PAGE FOLLOWS] 
 
 

3 

 
IN WITNESS WHEREOF, the
parties hereto have caused this First Supplemental Indenture to be duly executed as of the date first above written. 
 

	 PXP GULF COAST INC.,
 as a Subsidiary Guarantor

	
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Executive Vice President –

	 	 	       Administration, Secretary and
        General Counsel

 

	 JPMORGAN CHASE BANK, as Trustee

	
	 By:
	 	 /s/ Rebecca A. Newman

	 	 	 Name: Rebecca A. Newman

	 	 	 Title: Vice President & Trust Officer

 

	 PLAINS EXPLORATION & PRODUCTION COMPANY

	
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Executive Vice President –
      

	 	 	       Administration, Secretary and
        General Counsel

 

	 PLAINS E&P COMPANY

	
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Vice President and Secretary

 
 

	 ARGUELLO INC., as a Subsidiary Guarantor

	
	 	 	 
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Vice President and Secretary

 
 
 
 
 
 
 
 
 
 
 

4 

 

	 PLAINS ILLINOIS INC., as a Subsidiary Guarantor

	
	 	 	 
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Vice President and Secretary

 

	 PLAINS RESOURCES INTERNATIONAL INC., as a Subsidiary Guarantor

	
	 	 	 
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Vice President and Secretary

 

	 PMCT INC., as a Subsidiary Guarantor

	
	 	 	 
	 By:
	 	 /s/ Timothy T. Stephens

	 	 	 Name: Timothy T. Stephens

	 	 	 Title: Vice President and Secretary

 

5<PAGE>

                                                                   EXHIBIT 10.27

                            THIRD AMENDMENT TO LEASE

        THIS THIRD AMENDMENT TO LEASE ("Agreement") dated this 27th day of March
2003, is made and entered into by and between HOLLIS STREET INVESTORS, L.L.C., a
Delaware limited liability company ("Landlord") and LEAPFROG ENTERPRISES, INC.,
a Delaware corporation ("Tenant").

                                   BACKGROUND

        A.      Landlord and Tenant entered into that certain Lease Agreement
dated November 14, 2000 (the "Lease"), for approximately 40,060 rentable square
feet of space (the "Premises") located at 6401 Hollis Street, Suite 150,
Emeryville, California, as more fully described in the Lease; and

        B.      The Lease has been amended by a First Amendment to Lease dated
April 30, 2001, ("First Amendment"), which recognized Tenant's name change, and
a Second Amendment to Lease dated February 22, 2002 ("Second Amendment"), which
among other things expanded the Premises by an additional 30,770 rentable square
feet;

        C.      The current term of the Lease expires on February 1, 2006;

        D.      Tenant desires to expand the Premises by an additional 31,980
rentable square feet on the terms and conditions set forth in this Agreement.

        E.      Capitalized terms used but not otherwise defined herein shall
have the meanings ascribed to them in the Lease.

                                    AGREEMENT

        NOW, THEREFORE, in consideration of the covenants and agreements
contained herein, the parties hereby mutually agree as follows:

        1.      EXPANSION EFFECTIVE DATE: The "Expansion Effective Date" shall
be the earlier of (a) the date of Substantial Completion (as defined in
Paragraph 8 below) of the proposed Expansion Improvements (as defined below) or
(b) August 1, 2003.

        2.      PREMISES: Effective on the Expansion Effective Date, the
Premises shall be expanded to include 31,980 rentable square feet located in the
Building as depicted on Schedule A attached hereto and designated as Suite 100
(the "Expansion Space"). From and after the Expansion Effective Date, the term
"Premises" shall include the initial Premises and the Expansion Space except as
otherwise specified in this Agreement.

        3.      TEMPORARY PREMISES: From and upon the execution of this
Agreement until the Expansion Effective Date, Tenant shall be allowed to occupy
approximately 7500 square feet of space in Suite 125 of 6401 Hollis Street,
Emeryville, California, Building A, as

<PAGE>

depicted on Schedule B attached hereto (the "Temporary Expansion Space") until
seven days after the Expansion Effective Date.

        4.      TERM: The Termination Date of the Lease shall be co-terminous
with respect to both the initial Premises (as amended by the Second Amendment)
and the Expansion Space. The Termination Date is February 1, 2006.

        5.      RENT: The Base Rent for the Expansion Space shall commence on
the Expansion Effective Date. The Base Rent for the Expansion Space shall be as
set forth below, payable in equal monthly installments, in advance, on the first
business day of each and every month of the Term. Rent adjustments shall occur
on the anniversary dates of the Lease.

<TABLE>
<CAPTION>
                                            EXISTING SPACE
                                                BASE              EXPANSION SPACE       COMBINED SPACE
                                             RENT/MONTH          BASE RENT/MONTH(1)     BASE RENT/MONTH
<S>                                        <C>                   <C>                    <C>
Current Rent                               $    137,356.00                             $   137,356.00
February 1, 2003 - January 31, 2004        $    162,522.00       $     44,375.00(1)    $   206,897.00(1)
(1)
February 1, 2004 - January 31, 2005        $    172,855.00       $     45,574.25       $   218,429.25
February 1, 2005 - January 31, 2006        $    180,361.00       $     46,809.77       $   227,170.77
</TABLE>

(1) Rent for Expansion Space commences on the Expansion Effective Date.

The above-referenced rent figures for the expansion space reflect the three
percent (3%) annual increase to Base Rent and include the costs of all parking
spaces. The Base Rent shall remain payable in equal monthly installments, in
advance, on the first business day of each and every month of the Term. The Base
Rent adjustments reflected above shall occur on the anniversary of the
Commencement Date of the Lease.

        6.      TENANT'S PRORATA SHARE: As of the Expansion Effective Date,
Tenant's Prorata Share shall be revised to be Seventy-Four and Ninety-Three
Hundredths Percent (74.93%).

        7.      PARKING: Landlord shall provide Tenant with 2.75 parking spaces
per 1,000 rentable square feet of leased space in the Expansion Space, resulting
in a total of 88 spaces allocated to the Expansion Space and as of the Expansion
Effective Date, a total of 282 spaces allocated to the Premises.

        8.      IMPROVEMENT ALLOWANCE:

                (a)     Within twenty-one (21) days following the later of the
date of execution of the Lease by Tenant or Landlord's delivery of base drawings
necessary for Tenant's architect to prepare plans, Tenant shall cause its
architect to furnish to Landlord for Landlord's approval, which approval shall
not be unreasonably withheld, space plans sufficient to convey the architectural
design of the Premises, including, without limitation, the location of doors,
partitions, electrical and telephone outlets, plumbing fixtures, heavy floor
loads and other special requirements (collectively, the "Space Plan"). The
parties acknowledge and agree that time is of

<PAGE>

the essence with respect to the completion of the tenant improvements described
herein and therefore the parties agree to work diligently in providing Tenant's
architect the necessary information to complete a mutually acceptable Space Plan
for the premises. The parties acknowledge and agree that Tenant has selected
Interform ("Architect") to design the Expansion Space that is to be constructed
by Landlord. Landlord shall reimburse Tenant for costs incurred in connection
with the design of the Expansion Space. The fees for services provided to Tenant
by Interform which will be reimbursed by Landlord as part of the Tenant
Improvement allowance shall not exceed Three and No/100 Dollars ($3.00) per
square foot.

                (b)     Tenant shall cause the Architect to prepare from
Tenant's approved Space Plan, complete Plans and Specifications within a
reasonable time after the parties approve the Space Plan. The Plans and
Specifications shall (a) be compatible with the Building shell and with the
design, construction and equipment of the Building; (b) comply with all
Governmental Requirements; (c) comply with all applicable insurance regulations;
and (d) be consistent with the approved Space Plan.

                (c)     Landlord shall complete those improvements to the
Expansion Space ("Expansion Improvements") that are shown on the Plans and
Specifications. Unless noted on the Plans and Specifications, Landlord shall
complete the Expansion Improvements (the "Work"), at its sole cost and expense,
in accordance with the terms of this Agreement, but in no event shall Landlord's
costs exceed One Million Three Hundred Forty-Three Thousand One Hundred Sixty
and No/100 Dollars ($1,343,160.00). All materials used in completion of the Work
shall be approved first by Tenant's Agent (as defined below). Landlord shall
complete the Expansion Improvements in a first-class and workmanlike manner.
Landlord shall be entitled to retain a portion of the Expansion Improvement
allowance as a construction operations fee. Said amount shall not exceed 4% of
the hard construction costs. Hard construction costs shall be defined as all
costs associated with the actual construction of the Expansion Improvements and
will not include architectural fees, engineering fees, design fees, overhead and
profit to the general contractor, and fees for permits and licenses. In the
event the actual cost to complete the Expansion Improvements exceeds Landlord's
contribution as defined herein Landlord shall invoice Tenant for the difference
and Tenant shall reimburse Landlord within thirty (30) days of receipt of the
invoice.

                Landlord shall select the general contractor to construct the
Expansion Improvements. The amount of the fee deducted from the tenant allowance
for the general contractor shall be consistent with fees paid to other general
contractors in the region for projects of similar size and scope. All subtrades,
except for HVAC, required for the completion of the Expansion Improvements shall
be competitively bid by no less than three subcontractors unless Landlord and
Tenant specifically agree to waive such requirement and approve a subcontractor
without bidding the work. Tenant shall select the subcontractor for each
subtrade (except for HVAC) after review of their bids. The respective
subcontractors of any tier performing the Expansion Improvements shall: (1) be
parties to, and bound by, a collective bargaining agreement with a labor
organization affiliated with the Building and Construction Trades Council of the
AFL-CIO applicable to the geographic area in which the Building is located and
to the trade or trades in which the work under the contract is to be performed
and (2) employ only members of such labor organizations to perform work within
their respective jurisdictions.

<PAGE>

                (d)     All Expansion Improvements shall immediately become the
property of Landlord upon completion unless otherwise agreed to in writing.
Tenant shall not be obligated to remove the Expansion Improvements at the end of
the Term. Landlord warrants that all of the Expansion Improvements shall be
constructed in a good and workmanlike manner and free from defects for twelve
(12) months following the date of Substantial Completion. Landlord shall assign
to Tenant any and all warranties and guarantees of third parties held by
Landlord, with respect to the Expansion Improvements that Tenant is responsible
to maintain pursuant to the terms hereof and that extend beyond the 12-month
period, for enforcement directly by Tenant. If a warranty or guaranty is not
assignable, then Landlord shall enforce it for the benefit of Tenant, as
directed by Tenant.

                (c)     Landlord, at its sole cost and expense, shall comply
with and shall be solely responsible for compliance with all laws in connection
with the Work, including without limitation, the completion of the Work, the
filing of any construction or engineering documents and obtaining any required
approvals or permits from any applicable governmental authority, including
without limitation a temporary (if necessary) and permanent certificate of
occupancy for the Premises (or its equivalent).

                (f)     Tenant shall designate a representative ("Tenant's
Agent") as having sole authority to speak for and bind Tenant during
construction of the Expansion Improvements. Landlord shall not be authorized to
proceed with any Tenant Improvement without authority by Tenant's Agent, and
such authorization by Tenant's Agent shall be deemed authorization by Tenant.
Landlord shall not be authorized to accept changes or additions from any other
employees of Tenant except Tenant's Agent.

                (g)     Landlord shall use commercially reasonable efforts to
Substantially Complete (as defined below) the Expansion Space on or before
August 1, 2003. Landlord shall notify Tenant approximately five (5) days prior
to the estimated date of Substantial Completion. On Substantial Completion,
Landlord and Tenant's Agent shall prepare and execute a punchlist. The punchlist
shall list incomplete, minor and insubstantial details of construction,
necessary mechanical adjustments, and needed finishing touches. Landlord shall
complete the punchlist items within thirty (30) calendar days thereafter. During
the first twelve (12) months after the date of Substantial Completion of the
Expansion Improvements, Landlord shall promptly correct any defect, patent or
latent in the Expansion Improvements at Landlord's sole cost and expense, as
they become known to Landlord or within thirty (30) days after Tenant notifies
Landlord of such defect.

                (h)     "Substantially Complete" or "Substantial Completion"
means:

                        (i)     The Expansion Improvements have been completed
so that Tenant can use the Premises for their intended purposes without material
interference to Tenant conducting its ordinary business activities;

<PAGE>

                        (ii)    The only incomplete items are minor or
insubstantial details of construction, mechanical adjustments or finishing
touches, like touch-up plastering or painting as identified on a punchlist
prepared by Tenant in accordance with subsection (d) above;

                        (iii)   Landlord has secured a permanent certificate of
occupancy or the equivalent, as required by the appropriate Governmental
Authority having jurisdiction over the Building, permitting the Premises to be
occupied by Tenant in accordance with the laws;

                        (iv)    Tenant has ready access to and egress from the
Expansion Space, free of construction equipment and materials; and

                        (v)     The Expansion Space is broom clean.

                (i)     The final, stand alone, paragraph of Section 5b of the
Lease regarding the pass-through of certain costs as Operating Expenses shall
not apply to Landlord's obligation under this Paragraph 8.

        9.      TENANT'S ACCESS. Tenant shall have access to the Building, the
Premises, the Common Areas and the parking facilities twenty-four (24) hours per
day, seven (7) days per week, fifty-two (52) weeks per year.

        10.     EARLY ACCESS. Notwithstanding anything to the contrary contained
in the lease to the contrary, Landlord shall allow Tenant access to the Premises
approximately two (2) weeks prior to the Expansion Effective Date for the
purpose of installation of wiring, furniture, tenant fixtures, and general
setup. Such access shall be governed by the terms and conditions of the Lease;
however, in no event shall any Base Rent of Additional Rent be payable during
such early access period. Landlord shall cooperate fully with Tenant in its
effors to fixturize the Premises. Any work or installation performed by Tenant
shall be completed in compliance with the provisions of this Lease, shall be
subject to coordination by Landlord's contractor, and must be performed using
workers compatible with Landlord's contractors and subcontractors in order to
avoid labor disputes and delays in completion.

        11.     ASSIGNMENT AND SUBLETTING. Assignment and Subletting rights as
described and defined in The Second Amendment to Lease shall also apply to
Expansion Premises.

        12.     OPTION TO EXTEND. As of the Expansion Effective Date the
provisions of Section 39 of the Lease, Renewal Option shall apply to the initial
Premises and all expansion space pursuant to the Second Amendment and this
Agreement.

        13.     RIGHT OF FIRST OFFER. The right of first offer as described and
defined in the Second Amendment to Lease applies to the remaining space in the
Building. The term applicable to this Right of First Offer expires February 22,
2004.

        14.     AUTHORITY: Tenant represents and warrants that all necessary
corporate actions have been duly taken to permit Tenant to enter into this
Agreement and that the person

<PAGE>

signing this Agreement on behalf of Tenant has been duly authorized and
instructed to execute this Agreement. Landlord represents and warrants that all
necessary company actions have been duly taken to permit Landlord to enter into
this Agreement and that the person signing this Agreement on behalf of Landlord
has been duly authorized and instructed to sign this Agreement.

        15.     BROKERS: Each of Landlord and Tenant warrants and represents
that it has dealt with no real estate broker in connection with this Agreement
other than Colliers International and BT Commercial (collectively, "Broker"),
and that no other broker is entitled to any commission on account of this
Agreement. The party who breaches this warranty shall defend, hold harmless and
indemnify the other from any loss, cost, damage or expense, including reasonable
attorneys' fees, arising from the breach; Landlord's indemnity of Tenant shall
include claims by the Broker. Landlord is solely responsible for paying the
commission of the Broker in accordance with a separate agreement.

        16.     FULL FORCE AND EFFECT: Except as expressly modified above, all
terms and conditions of the Lease, as amended by the First Amendment and the
Second Amendment, remain in full force and effect and are hereby ratified and
confirmed. Landlord and Tenant hereby acknowledge and agree that, except as
provided in this Agreement, the Lease, as amended by the First Amendment and the
Second Amendment, has not been modified, amended, canceled, terminated,
released, superseded or otherwise rendered of no force or effect.

LANDLORD:                                TENANT:

Hollis Street Investors, L.L.C.,         Leapfrog Enterprises, Inc., a Delaware
a Delaware limited liability company     corporation

By:     Multi-Employer Property Trust,
        its Manager
                                         By: /s/ James P. Curley
                                            ---------------------------------
    By: Kennedy Associates Real Estate   Name: James P. Curley
        Counsel, Inc.,                   Its: CFO

By: /s/ Dwight J. McRae
   --------------------------------
Name: Dwight  J. McRae
Its: Vice President

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