Sec Form 13D Filing - CASTLE ENERGY CORP (CECX) filing for PAR PACIFIC HOLDINGS INC (PARR) - 2005-12-01

Insider filing report for Changes in Beneficial Ownership

  • Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
  • Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                 SCHEDULE 13D/A

                    Under the Securities Exchange Act of 1934

                                 Amendment No.3

                           DELTA PETROLEUM CORPORATION
================================================================================
                                (Name of Issuer)

                          COMMON STOCK, $0.01 PAR VALUE
================================================================================
                         (Title of Class of Securities)

                                   247907 20 7
================================================================================
                                 (CUSIP Number)

                              RICHARD E. STAEDTLER
                             CHIEF EXECUTIVE OFFICER
                            CASTLE ENERGY CORPORATION
                         357 SOUTH GULPH ROAD, SUITE 260
                            KING OF PRUSSIA, PA 19406
                                 (610) 992-9900
- --------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
                                 Communications)

                                DECEMBER 1, 2005
- --------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), Rule 13d-1(f) or Rule 13d-1(g), check the
following box. [ ]

Note: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7(b) for other
parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



CUSIP No   247907 20 7

- --------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons
    CASTLE ENERGY CORPORATION 76-0035225

- --------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions)
                (a) [X]
                (b) [ ]

- --------------------------------------------------------------------------------
(3) SEC Use Only .............................................

- --------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)   OO

- --------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d)
    or 2(e)....

- --------------------------------------------------------------------------------
(6) Citizenship or Place of Organization   DELAWARE

- --------------------------------------------------------------------------------
     Number of Shares    (7)Sole Voting Power   0
       Beneficially
         Owned           -------------------------------------------------------
        by Each          (8)Shared Voting Power   6,700,000**
       Reporting
         Person          -------------------------------------------------------
          With           (9)Sole Dispositive Power   0

- --------------------------------------------------------------------------------
(10)Shared Dispositive Power   6,700,000**

- --------------------------------------------------------------------------------
(11)Aggregate Amount Beneficially Owned by Each Reporting Person   6,700,000**

- --------------------------------------------------------------------------------
(12)Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions)

- --------------------------------------------------------------------------------
(13)Percent of Class Represented by Amount in Row (11)   14.05%**

- --------------------------------------------------------------------------------
(14)Type of Reporting Person (See Instructions)   CO

**See Item 5 of this Schedule 13D



CUSIP No.   247907 20 7

- --------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons
    CEC, INC   51-0363154

- --------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions)
                (a) [X]
                (b) [ ]

- --------------------------------------------------------------------------------
(3) SEC Use Only .............................................

- --------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)   OO

- --------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d)
    or 2(e)....

- --------------------------------------------------------------------------------
(6) Citizenship or Place of Organization   DELAWARE

- --------------------------------------------------------------------------------
     Number of Shares    (7)Sole Voting Power   0
       Beneficially
         Owned           -------------------------------------------------------
        by Each          (8)Shared Voting Power   6,700,000**
       Reporting
         Person          -------------------------------------------------------
          With           (9)Sole Dispositive Power   0

- --------------------------------------------------------------------------------
(10)Shared Dispositive Power   6,700,000**

- --------------------------------------------------------------------------------
(11)Aggregate Amount Beneficially Owned by Each Reporting Person   6,700,000**

- --------------------------------------------------------------------------------
(12)Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See
Instructions)

- --------------------------------------------------------------------------------
(13)Percent of Class Represented by Amount in Row (11)   14.05%**

- --------------------------------------------------------------------------------
(14)Type of Reporting Person (See Instructions)   CO

**See Item 5 of this Schedule 13D



Item 1. Security and Issuer

Item 1 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

This Schedule 13D relates to the $0.01 par value Common Stock of Delta Petroleum
Corporation, a Colorado corporation ("Delta"). The address of Delta's principal
office is 370 Seventeenth Street, Suite 4300, Denver, CO 80202.

Item 2. Identity and Background

Item 2 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

        The name of the persons filing this Schedule 13D are Castle Energy
Corporation ("Castle"), its wholly owned subsidiary, CEC, Inc. ("CEC"). Castle
and CEC are sometimes hereinafter referred to individually as a "Reporting
Person" and collectively as the "Reporting Persons". Castle is a Delaware
corporation; its principal office and business address is 357 Old Gulph Road,
Suite 260, King of Prussia, PA 19406 and its principal business, through its
subsidiaries, is oil and gas exploration and production. CEC is also a Delaware
corporation; its principal office and business address is 300 Delaware Avenue,
Suite 900, Wilmington, DE 19801 and its principal business is serving as a
holding company.

        None of the Reporting Persons has, during the last five years, been
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors). None of the Reporting Persons, during the last five years, has
been a party to a civil proceeding of a judicial or administrative body of
competent jurisdiction as a result of which such Reporting Person was or is
subject to a judgment, decree or final order enjoining future violations of, or
prohibiting or mandating activities subject to, federal or state securities laws
or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration

Item 3 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

        In September 2000, Castle Exploration Company, Inc., a wholly owned
subsidiary of Castle Energy Corporation ("Castle"), sold its interest in 26
offshore Louisiana wells to the issuer , Delta Petroleum Company ("Delta") in
exchange for a preliminary purchase price of $1,147,000 cash plus 382,286 shares
of Delta's common stock valued at $3.00 per share. Upon closing of that
transaction, the stock portion of the purchase price was issued in the name of
CEC.



        On January 15, 2002, Castle and several of its subsidiaries entered into
a Purchase and Sale Agreement with Delta dated December 31, 2001 (the "Purchase
and Sale Agreement", incorporated herein as Exhibit C) to sell all of the
domestic oil and gas assets, valued at $48,698,000 in the Purchase and Sale
Agreement, held by Castle and those subsidiaries to Delta for $20,000,000 and
9,566,000 shares of the common stock of Delta. The effective date of the sale
was October 1, 2001 and the closing date was May 31, 2002. The cash portion of
the purchase price payable at closing was reduced to $18,236,494 by the cash
flow from the properties between the effective date and the closing date.
700,000 shares of the 9,566,000 shares, issued in the name of Castle, were held
in escrow and were delivered to Castle at closing. The remaining 8,866,000
shares were issued in the name of CEC, Inc. and were also delivered to Castle at
closing. Immediately after closing, Castle transmitted the 700,000 shares of
Delta issued in its name to the transfer agent for Delta with instructions that
they be reissued in the name of CEC.

        On March 9, 2004, CEC disposed of 1,060,411 shares of Delta at a price
of $8.80 per share in an open market transaction.

        On March 25, 2004, CEC disposed of 1,200,000 shares of Delta at a price
of $9.75 per share in an open market transaction.

        On May 20, 2004, CEC disposed of 687,875 shares of Delta at a price of
$12.28 per share in an open market transaction.

        On March 4, 2005, CEC disposed of 300,000 shares of Delta at a price of
$16.05 per share in an open market transaction.

Item 4. Purpose of Transaction

Item 4 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

1.      The Reporting Persons acquired the securities described in this Schedule
        13D for investment purposes only and as consideration for sales of
        assets to Delta. Subject to the limitations described in Item 3 above
        and subject to compliance with applicable securities laws, the Reporting
        Persons have disposed of some or all of such securities in open market
        transactions from time to time. Since the time of that acquisition,
        circumstances have changed, as more fully described in Item 6 below.

    a.  The Reporting Persons do not have any plans and are not considering any
        proposals which relate to or which would result in the acquisition by
        any person of additional securities of the issuer. As described more
        fully in Item 6 below, Castle, the issuer and certain affiliates and
        subsidiaries of the issuer have entered into a merger agreement the
        effect of which is to restrict the disposition of securities of the
        issuer held by the Reporting Persons prior to the merger;



    b.  As described more fully in Item 6, Castle, the issuer and certain
        affiliates and subsidiaries of the issuer have entered into a merger
        agreement whereby Castle will be merged into a wholly owned subsidiary
        of the issuer.

    c.  Except as described in Item 6 below, the Reporting Persons do not have
        any plans and are not considering any proposals which relate to or which
        would result in a sale or transfer of a material amount of assets of the
        issuer or any of its subsidiaries; provided however, that Castle
        acquired from the issuer for $8,000,000 approximately 140 oil and gas
        properties located in Pennsylvania effective as of January 1, 2004
        pursuant to a Purchase and Sale Agreement dated February 27, 2004 (the
        "2004 Purchase Agreement" incorporated herein as Exhibit E), and
        provided further that the issuer assigned to Castle the right to acquire
        certain other properties in Pennsylvania which were then owned by
        Pennsylvania Castle Energy Corporation;

    d.  The Reporting Persons do not have any plans and are not considering any
        proposals which relate to or which would result in any change in the
        present board of directors or management of the issuer, including any
        plans or proposals to change the number or term of directors or to fill
        any existing vacancies on the board; provided, however that Castle, the
        issuer and certain affiliates and subsidiaries of the issuer have
        entered into a merger agreement whereby the Reporting Persons have
        agreed to vote the 6,700,000 shares of the issuer held by them in favor
        of the issuer's reincorporation in Delaware which may entail such
        changes;

    e.  Except as described in Item 6 below, the Reporting Persons do not have
        any plans and are not considering any proposals which relate to or which
        would result in any material change in the present capitalization or
        dividend policy of the issuer;

    f.  Except as described in Item 6 below, the Reporting Persons do not have
        any plans and are not considering any proposals which relate to or which
        would result in any other material change in the issuer's business or
        corporate structure, including but not limited to, if the issuer is a
        registered closed-end investment company, any plans or proposals to make
        any changes in its investment policy for which a vote is required by
        Section 13 of the Investment Company Act of 1940;

    g.  As described more fully in Item 6, Castle, the issuer and certain
        affiliates and subsidiaries of the issuer have entered into a merger
        agreement whereby the Reporting Persons have agreed to vote the
        6,700,000 shares of the issuer held by them in favor of the issuer's
        reincorporation in Delaware, which will entail changes in the issuer's
        charter, bylaws and instruments corresponding thereto, which actions may
        impede the acquisition of control of the issuer by any person;

    h.  The Reporting Persons do not have any plans and are not considering any
        proposals which relate to or which would result in cause a class of
        securities of the issuer to be delisted from a national securities
        exchange or to cease to be authorized to be quoted in an inter-dealer
        quotation system of a registered national securities association;



    i.  The Reporting Persons do not have any plans and are not considering any
        proposals which relate to or which would result in cause a class of
        equity securities of the issuer to become eligible for termination of
        registration pursuant to Section 12(g)(4) of the Act; or

    j.  Except as described in Item 6, below, the Reporting Persons do not have

        any plans and are not considering any proposals which relate to or which
        would result in any action similar to any of those enumerated above.

2.      Pursuant to the Purchase and Sale Agreement, Delta has appointed to its
        Board of Directors Russell S. Lewis, a director of Castle, more fully
        described on Exhibit A hereto.

3.      Under the Purchase and Sale Agreement, Delta had the right to repurchase
        up to 3,188,667 of its shares from Castle for $4.50 per share until May
        31, 2003, a period of one year after closing. Castle, in turn, agreed to
        maintain and to not distribute to its shareholders at least 3,188,667
        shares of Delta common stock held by it during this period. That right
        to repurchase expired unexercised.

4.      Delta contractually agreed in the Purchase and Sale Agreement to file a
        registration statement registering all shares of Delta common stock to
        be issued to Castle and its subsidiaries under the Purchase and Sale
        Agreement within thirty (30) days of closing, under terms more
        specifically set out in the Registration Rights Agreement, a copy of
        which is attached as Exhibit B hereto. The shares were registered
        through a registration statement filed by the issuer July 3, 2002 on
        Form S-3 (SEC File No. 333-91930).

5.      By Amendment Number One to the Purchase and Sale Agreement, incorporated
        herein as Exhibit D, Castle and Delta contracted as follows:

                        "Castle covenants and agrees that in no event shall it
                directly or indirectly own or have voting or investment power
                over more than 49.9% of Delta's issued and outstanding shares.
                It is the intent of the Parties that Delta be deemed to be the
                acquiror under Generally Accepted Accounting Principles and the
                Parties agree in advance that Castle will limit or delay its
                representation on Delta's Board of Directors to the extent that
                such limitation or delay is necessary to assure that Castle is
                not deemed to be the acquiror under GAAP as the direct or
                indirect result of the transactions contemplated hereby.
                Further, during the period that Castle holds any Delta shares
                issued to it pursuant to the transaction, Castle will not
                attempt to take any further control of Delta in any manner that
                is not specifically endorsed in writing by Delta's board of
                directors, it will not demand that any special meeting of
                Delta's shareholders be held, it will not submit any matter to
                be voted upon by the shareholders of Delta that has not been
                previously recommended by Delta's board of directors, it will
                vote in favor of all nominees for directors, it will vote the
                Delta shares issued to it pursuant to this transaction in favor
                of any matters recommended by Delta's board of directors
                relating to the settlement of any and all disputes concerning
                Delta's offshore California properties (to the extent required)
                and it will generally endeavor to support actions recommended to
                Delta's



                shareholders by Delta's board of directors. Notwithstanding the
                foregoing, Castle shall have the right in its sole and absolute
                discretion to vote in any manner that it may choose with respect
                to any transaction, merger or sale of assets that requires a
                vote of Delta's shareholders under Colorado law."

Item 5. Interest in Securities of the Issuer.

Item 5 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

(a)     The Reporting Persons beneficially own an aggregate of 6,700,000 shares
of Delta Common Stock, or 14.05% of the outstanding shares of Delta Common Stock
(47,683,000 shares at September 30, 2005, as reported in the issuer's annual
report on Form 10-K/A, Amendment #1 as filed October 28, 2005).

(b)     Neither of the Reporting Persons currently have the sole power to vote
or to direct the vote and sole the power to dispose or to direct the disposition
of all of the shares described in this Schedule 13D. The Reporting Persons
currently share with each other the power to vote or to direct the vote and the
power to dispose or to direct the disposition of all of the shares described in
this Schedule 13D; provided, however that Castle, the issuer and certain
affiliates and subsidiaries of the issuer have entered into a merger agreement
whereby the Reporting Persons have agreed to vote the 6,700,000 shares of the
issuer held by them in favor of the issuer's reincorporation in Delaware.

(c)     See Item 3 of this Schedule 13D.

(d)     No other person has the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of, any of the shares
beneficially owned by the Reporting Persons.

(e)     Not applicable.

Item  6.  Contracts,  Arrangements,   Understandings  or  Relationships  With
Respect to Securities of the Issuer.

Item 6 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

On November 8, 2005, Castle entered into a merger agreement (the "Merger
Agreement") with Delta Petroleum Corporation, a Colorado corporation
("Delta-Colorado") and two newly formed and wholly owned subsidiaries of
Delta-Colorado: Delta Petroleum Corporation, a Delaware corporation
("Delta-Delaware" and collectively, with Delta-Colorado, "Delta") and DPCA LLC,
a Delaware limited liability company ("DPCA").



        Pursuant to the merger agreement, Castle will merge (the "Merger") with
and into DPCA with DPCA as the surviving company and the Castle's shareholders
will receive approximately 1.164 shares of Delta's common stock for each of
their shares of Castle's common stock, subject to adjustment based on the
issuance of any shares of common stock by Castle prior to closing (or an
aggregate of 8,500,000 shares of Delta common stock). In the merger, the
6,700,000 shares of Delta common stock currently owned by the Company will be
cancelled. The Merger is designed to be a tax-free exchange for shareholders of
both Delta and Castle. The boards of directors of Castle and Delta have approved
the Merger.

        The closing of the merger is subject to approval of the Merger Agreement
by the holders of a majority of the shares of the Castle's outstanding common
stock and by regulatory agencies, receipt of legal opinions and other customary
closing conditions set forth in the Merger Agreement.

        The Merger Agreement contains certain termination rights for both Delta
and Castle, and further provides that, upon termination of the Merger Agreement
under specified circumstances, each party may be required to pay the other a
termination fee of $5,000,000 or reimburse the other party up to $1,000,000 in
fees and expenses, if actually incurred, relating to the transaction
contemplated by the Merger Agreement.

        Concurrently with the execution of the Merger Agreement and in order to
induce Delta to enter into the Merger Agreement, certain of the Company's
officers and all of its directors and the estate and family of Castle's founder
and former Chief Executive Officer, Joseph L. Castle II, entered into voting
agreements with Delta pursuant to which they agreed, among other things, to vote
all shares of Castle's common stock held by them in favor of the adoption of the
Merger Agreement and the other transactions contemplated by the Merger
Agreement.

        In May 2002, Castle sold all of its oil and gas properties to Delta for
$15,478,000 and 9,566,000 shares of Delta's common stock, valued at $26,952,000
for purposes of generally accepted accounting principles. As a result of the
sale, Castle then owned approximately 44% of Delta and three of Castle's
directors were also directors of Delta, which then had seven directors.

        In March 2004, the Company acquired interests in 138 western
Pennsylvania gas wells from Delta. Castle previously owned most of these
properties through May 31, 2002 when it sold all of its United States oil and
gas properties to Delta (see above). The purchase price paid by the Company was
$8,121,000. At the time of the purchase, Castle owned approximately 25% of
Delta.

        By November 8, 2005, the date of the merger agreement, Castle had
reduced its holdings of Delta's stock to 6,700,000 shares (approximately 14%)
and its representation on Delta's board to one of nine directors. Under the
terms of the Merger Agreement, Castle has agreed to vote these 6,700,000 shares
in favor of Delta's reincorporation in Delaware through the merger of
Delta-Colorado into Delta-Delaware.



        The foregoing description of the Merger Agreement and the Voting
Agreement does not purport to be complete and is qualified in its entirety by
reference to the Merger Agreement and Voting Agreement.

Item 7. Material to be Filed as Exhibits.

Item 7 is hereby supplemented and restated to read in its entirety, as
supplemented and restated, as follows:

EXHIBIT A  -  OFFICERS AND DIRECTORS OF CASTLE ENERGY CORPORATION AND CEC, INC.
EXHIBIT B  -  REGISTRATION RIGHTS AGREEMENT DATED MAY 31, 2002
EXHIBIT C  -  PURCHASE AND SALE AGREEMENT BETWEEN CASTLE ENERGY CORPORATION AND
              DELTA PETROLEUM COMPANY, EXECUTED JANUARY 15, 2002 incorporated by
              reference to Exhibit 10.144 of Castle's Form 10-Q for the quarter
              ended December 31, 2001 (File 0-10990)
EXHIBIT D  -  AMENDMENT NUMBER ONE TO PURCHASE AND SALE AGREEMENT, BETWEEN DELTA
              PETROLEUM COMPANY AND CASTLE ENERGY CORPORATION, MARCH 2002
              incorporated by reference to Exhibit 10.145 of Castle's Form 10-Q
              for the quarter ended March 31, 2002 (File 0-10990)
EXHIBIT E  -  AGREEMENT AND PLAN OF MERGER DATED NOVEMBER 8, 2005 AMONG DELTA
              PETROLEUM CORPORATION, A COLORADO CORPORATION; DELTA PETROLEUM
              CORPORATION, A DELAWARE CORPORATION; PPCA LLC, A DELAWARE LIMITED
              LIABILITY COMPANY AND CASTLE ENERGY CORPORATION, A DELAWARE
              CORPORATION
EXHIBIT F  -  PRESS RELEASE DATED NOVEMBER 8, 2005 incorporated by reference to
              Exhibit 99.1 of Castle's report on Form 8-K dated November 10,
              2005 (File 0-10990)

Signature.

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

CASTLE ENERGY CORPORATION

Date  DECEMBER 1, 2005

Signature /s/ WILLIAM C LIEDTKE III
          -------------------------
Name/Title:  WILLIAM C. LIEDTKE III, VICE PRESIDENT

CEC, INC.

Date  DECEMBER 1, 2005

Signature /s/ WILLIAM C LIEDTKE III
          -------------------------
Name/Title:  WILLIAM C. LIEDTKE III, VICE PRESIDENT



  EXHIBIT A - OFFICERS AND DIRECTORS OF CASTLE ENERGY CORPORATION AND CEC, INC.

          DIRECTORS AND EXECUTIVE OFFICERS OF CASTLE ENERGY CORPORATION

Sidney F. Wentz                           Chairman of the Board of Directors
5 Trevino Court Park
Florham, NJ 07932

Mr. Wentz was Chairman of the Board of The Robert Wood Johnson Foundation, the
nation's largest health care philanthropy, from June 1989 until his retirement
in 1999.

Richard Staedtler                         President and Chief Executive Officer
Castle Energy Corporation
357 South Gulph Road, Suite 260
King of Prussia, PA  19406

Mary Cade                                 Chief Financial Officer and Chief
Castle Energy Corporation                 Accounting Officer
357 South Gulph Road, Suite 260
King of Prussia, PA  19406

Martin R. Hoffmann                        Director
1546 Hampton Hill Circle
McLean, VA 22101

Mr. Hoffmann serves as a consultant to the United States Department of Defense,
as well as a Director of Seachange International, Inc. of Maynard, Massachusetts
and a trustee of CIME Endeavor Foundation.

John P. Keller                            Director
President
Keller Group, Inc.
One Northfield Plaza, Suite 510
Northfield, IL 60093

Since 1972, Mr. Keller has served as the President of Keller Group, Inc., a
privately-held corporation with subsidiaries in Ohio, Pennsylvania and Virginia.
Mr. Keller was previously a director of Delta Petroleum Corporation.



Russell S. Lewis                          Director
Verisign, Inc.
21345 Ridgetop Circle
Dulles, VA 20166

Since 1999, Mr. Lewis has been the owner and President of Lewis Capital Group, a
company investing in and providing consulting services to growth-oriented
companies. Mr. Lewis served as Senior Vice President of Corporate Development at
VeriSign, Inc. from March 2000 until February 2002, following which he began his
current position of Executive Vice President and General Manager of Verisign's
Global Registry Services. Mr. Lewis is also a director of Delta Petroleum
Corporation.

William C. Liedtke, III                   Vice President and General Counsel
Castle Energy Corporation
5623 N. Western, Suite A
Oklahoma City, OK 73118

                  DIRECTORS AND EXECUTIVE OFFICERS OF CEC, INC.

Pamela Jasinski                           Sole Director and President
300 Delaware Avenue
Suite 900
Wilmington, DE 19801

Richard Staedtler                         Vice President and Chief Financial
357 South Gulph Road, Suite 260           Officer
King of Prussia, PA  19406

William C. Liedtke, III                   Vice President and General Counsel
5623 N. Western, Suite A
Oklahoma City, OK 73118

Kari Johnson                              Vice President
300 Delaware Avenue
Suite 900
Wilmington, DE 19801

        None of the officers and directors of Castle Energy Corporation or CEC,
Inc. has, during the last five years, been convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors) and was not, during the
last five years, a party to a civil proceeding of a judicial or administrative
body of competent jurisdiction as a result of which such officer or director was
or is subject to a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal or state
securities laws or finding any violation with respect to such laws. All of the
officers and directors of Castle Energy Corporation and CEC, Inc. are U.S.
citizens.



                      EXHIBIT E TO SCHEDULE 13D AMENDMENT 3


                          AGREEMENT AND PLAN OF MERGER


                          DATED AS OF NOVEMBER 8, 2005




                                      AMONG

              DELTA PETROLEUM CORPORATION, A COLORADO CORPORATION,

              DELTA PETROLEUM CORPORATION, A DELAWARE CORPORATION,

                 DPCA LLC, A DELAWARE LIMITED LIABILITY COMPANY

                                       AND

                CASTLE ENERGY CORPORATION, A DELAWARE CORPORATION



                                TABLE OF CONTENTS

                                                                            PAGE
                                                                            ----
ARTICLE 1      THE MERGER.....................................................1

     1.1   The Merger.........................................................1
     1.2   Closing............................................................2
     1.3   Effective Time.....................................................2
     1.4   Effects Of The Merger..............................................2
     1.5   Effect on Capital Stock............................................2
     1.6   Stock Options......................................................3
     1.7   Exchange Of Certificates...........................................4
     1.8   Taking of Necessary Action; Further Action.........................8
     1.9   Reincorporation Merger.............................................8

ARTICLE 2      REPRESENTATIONS AND WARRANTIES OF THE COMPANY.................10

     2.1   Organization..........
............................................10
     2.2   Capital Stock of the Company......................................11
     2.3   Authority Relative to this Agreement..............................12
     2.4   SEC Reports and Financial Statements..............................13
     2.5   Certain Changes...................................................14
     2.6   Litigation........................................................14
     2.7   Disclosure in Proxy Statement.....................................14
     2.8   Broker's or Finder's Fees.........................................14
     2.9   Employee Plans....................................................15
     2.10  Board Recommendation; Company Action; Requisite Vote of
           the Company's Stockholders........................................17
     2.11  Taxes.............................................................18
     2.12  Environmental.....................................................19
     2.13  Compliance with Laws..............................................21
     2.14  Employment Matters................................................21
     2.15  Rights Agreement..................................................21
     2.16  Oil and Gas Reserves..............................................21
     2.17  Certain Contracts and Arrangements................................21
     2.18  Financial and Commodity Hedging...................................22
     2.19  Properties........................................................22
     2.20  Accounting Controls...............................................22
     2.21  Take-or-Pay Deliveries............................................23
     2.22  Gas Imbalances....................................................23
     2.23  Intellectual Property.............................................23
     2.24  GAMXX.............................................................23
     2.25  Investment Company................................................23
     2.26  Texaco Settlement.................................................23

ARTICLE 3      REPRESENTATIONS AND WARRANTIES OF PARENT AND SUBSIDIARY.......23

     3.1   Organization......................................................24
     3.2   Capital Stock.....................................................25
     3.3   Authority Relative to this Agreement..............................26

                                       -i-


                                TABLE OF CONTENTS
                                   (continued)

                                                                            PAGE
                                                                            ----
     3.4   SEC Reports and Financial Statements..............................27
     3.5   Litigation........................................................27
     3.6   Disclosure in Proxy Statement.....................................28
     3.7   Broker's or Finder's Fees.........................................28
     3.8   Parent Not An Interested Stockholder..............................28
     3.9   Oil and Gas Reserves..............................................28
     3.10  Certain Contracts and Arrangements................................28

ARTICLE 4      CONDUCT OF BUSINESS PENDING THE MERGER........................29

     4.1   Conduct of Business by the Company Pending the Merger.............29
     4.2   Conduct of Business of Parent.....................................31

ARTICLE 5      ADDITIONAL AGREEMENTS.........................................32

     5.1   Shareholders' Meeting.............................................32
     5.2   Registration Statement............................................32
     5.3   Employee Benefit Matters..........................................33
     5.4   Consents and Approvals............................................34
     5.5   Public Statements.................................................35
     5.6   Reasonable Best Efforts...........................................35
     5.7   Notification of Certain Matters...................................35
     5.8   Access to Information; Confidentiality............................35
     5.9   No Solicitation...................................................36
     5.10  Affiliates........................................................38
     5.11  Section 16 Matters................................................38
     5.12  Voting Agreement..................................................38
     5.13  Stock Exchange Listing............................................38
     5.14  Tax Treatment.....................................................38
     5.15  Indemnification...................................................38

ARTICLE 6      CONDITIONS....................................................39

     6.1   Conditions to the Obligation of Each Party to Effect the Merger...39
     6.2   Additional Conditions to the Obligation of Parent and Subsidiary..39
     6.3   Additional Conditions to the Obligation of the Company............40

ARTICLE 7      TERMINATION, AMENDMENT AND WAIVER.............................41

     7.1   Termination.......................................................41
     7.2   Effect of Termination.............................................42
     7.3   Fees and Expenses.................................................43
     7.4   Amendment.........................................................43
     7.5   Waiver............................................................44

ARTICLE 8      GENERAL PROVISIONS............................................44

     8.1   Notices...........................................................44
     8.2   Representations and Warranties....................................45

                                      -ii-


                                TABLE OF CONTENTS
                                   (continued)

                                                                            PAGE
                                                                            ----
     8.3   Governing Law; Waiver of Jury Trial...............................45
     8.4   Counterparts; Facsimile Transmission of Signatures................45
     8.5   Assignment; No Third Party Beneficiaries..........................45
     8.6   Severability......................................................46
     8.7   Entire Agreement..................................................46

                                      -iii-


SCHEDULE OF DEFINITIONS

TERM                                        SECTION
- -------------------------------------       -------
'33 Act                                     2.3(c)
'34 Act                                     2.3(c)
Acquiring Person                            2.15
Agreement                                   Preamble
Articles of Merger                          1.9(a)
Book Entry Shares                           1.7(a)
CBCA                                        1.9(a)
CERCLA                                      2.12(h)
Certificate of Merger                       1.3
Closing                                     1.2
Closing Date                                1.2
Code                                        Recitals
Common Shares Trust                         1.7(e)(ii)
Company                                     Preamble
Company Board                               1.6(a)
Company Cases                               2.6
Company Common Stock                        1.5
Company Disclosure Letter                   2
Company Financial Statements                2.4(b)
Company Material Adverse Effect             2.1(a)
Company Reserve Report                      2.16
Company SEC Reports                         2.4(a)
Company Stock Option                        1.6(a)
Company Stock Plan                          1.6(a)
Company Subsidiaries                        2.1(a)
Confidentiality Agreements                  5.8(c)
DGCL                                        1.1(a)
Distribution Date                           2.15
Effective Time                              1.3
Employee Benefit Plan                       2.9(a)
Environmental Laws                          2.12(h)
ERISA                                       2.9(a)
Excess Shares                               1.7(e)(i)
Exchange Agent                              1.7(a)
Exchange Fund                               1.7(a)
Exchange Ratio                              1.5(b)
GAAP                                        2.4(b)
Hazardous Substances                        2.12(i)
Intellectual Property                       2.23
Intended Tax Treatment                      5.14
Law                                         2.13
Lehman                                      3.7

                                      -iv-


Liens                                       2.1(b)
LLC Act                                     1.1(a)
Merger                                      1.1(a)
Merger Consideration                        1.5(b)
NASDAQ                                      1.7(e)(i)
Order                                       2.3(b)
Other Filings                               5.2(b)
Outside Date                                7.1(b)
Parent                                      Preamble
Parent Cases                                3.5
Parent Colorado                             Preamble
Parent Colorado Board                       1.9(d)
Parent Colorado Common Stock                1.9(c)
Parent Colorado Shareholders' Meeting       5.1(b)
Parent Colorado Stock Option                1.9(d)
Parent Colorado Stock Plans                 1.9(d)
Parent Common Stock                         1.9(c)
Parent Delaware                             Preamble
Parent Delaware Common Stock                1.9(c)
Parent Financial Statements                 3.4(b)
Parent Material Adverse Effect              3.1(a)
Parent Reserve Reports                      3.10
Parent SEC Reports                          3.4(a)
Parent Subsidiaries                         3.1(a)
person                                      2.1(b)
Proxy Statement/Prospectus                  2.7
RCRA                                        2.12(h)
Reincorporation Certificate of Merger       1.9(a)
Reincorporation Effective Time              1.9(a)
Reincorporation Merger                      1.9(a)
Rights                                      2.15
Rights Agreement                            2.15
S-4                                         5.2(a)
SARs                                        2.2(b)
SEC                                         1.6(b)
Settlement Agreement                        2.26
Shareholders' Meeting                       5.1(a)
Snyder                                      2.8
Stock Acquisition Date                      2.15
Stock Certificate                           1.5(d)
Subsidiary                                  Preamble
Subsidiary Material Adverse Effect          5.4
Superior Proposal                           5.9(c)
Surviving Company                           1.1(a)
Takeover Proposal                           5.9(c)
Voting Agreement                            Recitals

                                       -v-


                          AGREEMENT AND PLAN OF MERGER

        THIS AGREEMENT AND PLAN OF MERGER (this "Agreement"), dated as of
November 8, 2005 is among Delta Petroleum Corporation, a Colorado corporation
("Parent Colorado"), Delta Petroleum Corporation, a Delaware corporation
("Parent Delaware"), DPCA LLC, a Delaware limited liability company and a wholly
owned subsidiary of Parent Colorado ("Subsidiary"), and Castle Energy
Corporation, a Delaware corporation (the "Company"). Except as expressly set
forth in this Agreement, Parent Colorado and Parent Delaware shall be referred
to together as "Parent", and, assuming the consummation thereof, as the
surviving company of the Reincorporation Merger (as defined below) of Parent
Colorado and Parent Delaware pursuant to Section 1.9 hereof.

        WHEREAS, the parties desire that (i) Parent Colorado reincorporate from
the State of Colorado to the State of Delaware by merging with and into Parent
Delaware, and (ii) the Company be merged with and into Subsidiary with
Subsidiary as the surviving company, all as set forth in Article 1 of this
Agreement;

        WHEREAS, the boards of directors of each of Parent Colorado, Parent
Delaware and the Company, and the sole member of Subsidiary, have approved this
Agreement and deem it advisable and in the best interests of their respective
stockholders or members, as applicable, to consummate the transactions
contemplated hereby on the terms and conditions set forth herein;

        WHEREAS, in consideration of Parent entering into this Agreement and
incurring certain related fees and expenses, certain stockholders of the Company
are executing a voting agreement (the "Voting Agreement") relating to the
Company Common Stock (as defined below) beneficially owned by such stockholders;

        WHEREAS, it is intended that, for United States federal income tax
purposes, the Merger and the Reincorporation Merger (as defined below) each
shall qualify as a reorganization within the meaning of Section 368(a) of the
United States Internal Revenue Code of 1986, as amended (the "Code"), and the
regulations promulgated thereunder and this Agreement constitutes a "plan of
reorganization" within the meaning of Section 1.368(c) of the Treasury
Regulations.

        NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants contained in this Agreement and for other valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Parent, Subsidiary and
the Company, intending to be legally bound, hereby agree as follows:

                                    ARTICLE 1
                                   THE MERGER

        1.1     The Merger.

                (a)     On the terms and subject to the conditions set forth in
this Agreement, and in accordance with the Delaware Limited Liability Company
Act ("LLC Act") and General Corporation Law of the State of Delaware (the
"DGCL"), following the Reincorporation Effective Time (defined below), the
Company shall be merged with and into the Subsidiary at the Effective Time (the
"Merger"). At the Effective Time, the separate corporate existence of



the Company shall cease and the Subsidiary shall continue as the surviving
limited liability company of the Merger (the "Surviving Company").

                (b)     It is intended that the Merger shall constitute a
reorganization under the Code.

        1.2     Closing. Unless this Agreement is earlier terminated, the
closing (the "Closing") of the Merger shall take place at the offices of Davis
Graham & Stubbs LLP, 1550 Seventeenth Street, Denver, Colorado 80202 at 10:00
a.m. on the second business day following the satisfaction or waiver (to the
extent permitted by applicable Law (as defined in Section 2.13)) of the
conditions set forth in Article 6, or at such other place, time and date as
shall be agreed in writing between Parent and the Company. The date on which the
Closing occurs is referred to in this Agreement as the "Closing Date".

        1.3     Effective Time. Prior to the Closing, Parent shall prepare, and
on the Closing Date or as soon as practicable thereafter, the Surviving Company
shall file (a) a certificate of merger (the "Certificate of Merger") executed in
accordance with the relevant provisions of the DGCL with the Secretary of State
of the State of Delaware, and (b) any other filings or recordings required under
the DGCL. The Merger shall become effective at such time as the Certificate of
Merger is duly filed with the Secretary of State of the State of Delaware, or at
such subsequent time as Parent and the Company shall agree and specify in the
Certificate of Merger (the date the Merger becomes effective being the
"Effective Time").

        1.4     Effects Of The Merger. The Merger shall have the effects set
forth in Section 264 of the DGCL. In addition, the certificate of formation of
the Subsidiary, as in effect immediately prior to the Effective Time, shall be
the certificate of formation of the Surviving Company 
until thereafter changed
or amended as provided therein or by applicable Law. The operating agreement of
Subsidiary, as in effect immediately prior to the Effective Time, shall be the
operating agreement of the Surviving Company until thereafter changed or amended
as provided therein or under the LLC Act. The Surviving Company will be managed
by its sole member. The officers of Subsidiary immediately prior to the
Effective Time shall be the officers of the Surviving Company, until the earlier
of their resignation or removal or until their respective successors are duly
elected or appointed and qualified, as the case may be.

        1.5     Effect on Capital Stock. At the Effective Time, by virtue of the
Merger and without any action on the part of the holder of any shares of common
stock, par value $0.50 per share, of the Company ("Company Common Stock") or any
holder of any membership units of Subsidiary:

                (a)     Cancellation Of Treasury Stock, Parent-Owned Stock and
Certain Parent Common Stock. Each share of Company Common Stock that is owned by
the Company, Parent or Subsidiary shall no longer be outstanding and shall
automatically be canceled and shall cease to exist, and no consideration shall
be delivered or deliverable in exchange therefor. Parent Common Stock (as
defined below) owned by the Company shall no longer be outstanding and shall
automatically be canceled and shall cease to exist.

                                        2


                (b)     Conversion Of Company Common Stock. Subject to Sections
1.5(a), 1.6 and 1.7(e), each issued and outstanding share of Company Common
Stock shall be converted into the right to receive the number (the "Exchange
Ratio") of validly issued, fully paid and non-assessable shares of Parent Common
Stock resulting by dividing 8,500,000 by the number of outstanding shares of
Company Common Stock at the Effective Time (the "Merger Consideration").

                (c)     Capital Stock Of Subsidiary. Each issued and outstanding
membership unit of Subsidiary shall be converted into and become one fully paid
and nonassessable membership unit of the Surviving Company.

                (d)     Effect Of Conversion. From and after the Effective Time,
all of the shares of Company Common Stock converted into the Merger
Consideration pursuant to this Section 1.5 shall no longer be outstanding and
shall automatically be canceled and retired and shall cease to exist, and each
holder of a certificate (each a "Stock Certificate") representing any such
shares of Company Common Stock shall thereafter cease to have any rights with
respect thereto, except the right to receive (i) the Merger Consideration, (ii)
any dividends and other distributions in accordance with Sections 1.7(d) and
1.7(f) and (iii) any cash to be paid in lieu of any fractional share of Parent
Common Stock in accordance with Section 1.7(e).

                (e)     Changes To Stock. If at any time during the period
between the date of this Agreement and the Effective Time, any change in the
outstanding shares of capital stock of Parent or the Company shall occur by
reason of any reclassification, recapitalization, stock split or combination,
split-up, exchange or readjustment of shares, rights issued in respect of Parent
Common Stock or any stock dividend thereon with a record date during such
period, the Merger Consideration and any other similarly dependent items, as the
case may be, shall be appropriately adjusted to provide the holders of shares of
Company Common Stock the same economic effect as contemplated by this Agreement
prior to such event.

        1.6     Stock Options.

                (a)     The board of directors of the Company (the "Company
Board"), or the appropriate committee thereof, shall take such action as is
necessary so that at the Effective Time, each outstanding option to purchase
shares of Company Common Stock (a "Company Stock Option") granted under the
Company Stock Plan (as defined below), whether or not vested, shall cease to
represent a right to acquire shares of Company Common Stock, and shall
thereafter constitute an option to acquire, on the same terms and conditions as
were applicable to such Company Stock Option pursuant to the relevant Company
Stock Plan under which it was issued and the agreement evidencing the grant
thereof prior to the Effective Time, the number (rounded to the nearest whole
number) of shares of Parent Common Stock determined by multiplying (x) the
number of shares of Company Common Stock subject to such Company Stock Option
immediately prior to the Effective Time by (y) the Exchange Ratio. The exercise
price or base price per share of Parent Common Stock subject to any such Company
Stock Option at and after the Effective Time shall be an amount (rounded to the
nearest one hundredth of a cent) equal to (A) the exercise price or base price
per share of Company Common Stock subject to such Company Stock Option prior to
the Effective Time divided by (B) the Exchange Ratio. The parties acknowledge
that as of the Effective Time, all Company Stock Options

                                        3


granted under the 1992 Executive Equity Incentive Plan (the "Company Stock
Plan"), if unvested, shall remain unvested and shall remain exercisable in
accordance with the terms of the applicable plan documents and award agreements
for each such Company Stock Option. The parties will make good faith efforts to
make equitable adjustments to ensure that the conversions of Company Stock
Options contemplated by this Section 1.6(a) comply with Section 409A of the
Code.

                (b)     Parent shall take all corporate action necessary to
assume as of the Effective Time the Company's obligations under the Company
Stock Options and Parent Colorado Stock Options (as defined below) and to
otherwise effectuate the provisions of this Section 1.6 and Section 1.9(d), and
shall reserve for issuance a sufficient number of shares of Parent Common Stock
for delivery pursuant to the terms set forth in this Section 1.6 and Section
1.9(d). Effective as of the Closing Date, Parent shall file with the U.S.
Securities and Exchange Commission (the "SEC") a registration statement on Form
S-8 or other appropriate form or a post-effective amendment to a previously
filed registration statement under the Securities Act with respect to the Parent
Common Stock subject to Company Stock Options and Parent Colorado Stock Options
and shall use its reasonable best efforts to cause such registration statement
to become effective as promptly as practicable and thereafter maintain the
effectiveness of such registration statement (and maintain the current status of
the prospectus contained therein), as well as comply with any applicable state
securities or "blue sky" laws, for so long as such options remain outstanding.

        1.7     Exchange Of Certificates.

                (a)     Exchange Agent. U.S. Bank National Association, or such
other exchange agent that is reasonably acceptable to Parent and the Company,
shall serve as the exchange agent for the Parent Common Stock (the "Exchange
Agent") for the purpose of exchanging Stock Certificates representing shares of
Company Common Stock and non-certificated shares represented by book entry
("Book-Entry Shares") for the Merger Consideration. Parent will make available
to the Exchange Agent, at or prior to the Effective Time, the Parent Common
Stock to be delivered in respect of the shares of Company Common Stock (such
Parent Common Stock being hereinafter referred to as the "Exchange Fund").
Promptly after the Effective Time (but in any event within five business days
thereafter), Parent will send, or will cause the Exchange Agent to send, to each
holder of record of shares of Company Common Stock as of the Effective Time a
letter of transmittal for use in such exchange (which shall specify that
delivery shall be effected, and risk of loss and title to the Stock Certificates
theretofore representing shares of Company Common Stock shall pass, only upon
proper delivery of such Stock Certificates to the Exchange Agent or by
appropriate guarantee of delivery in the form customarily used in transactions
of this nature from a member of a national securities exchange, a member of the
National Association of Securities Dealers, Inc., or a commercial bank or trust
company in the United States) in such form as the Company and Parent may
reasonably agree, for use in effecting delivery of shares of Company Common
Stock to the Exchange Agent. Exchange of any Book-Entry Shares shall be effected
in accordance with Parent's customary procedures with respect to securities
represented by book entry.

                (b)     Exchange Procedure. Each holder of shares of Company
Common Stock that have been converted into a right to receive the Merger
Consideration, upon surrender to the

                                        4


Exchange Agent of a Stock Certificate, together with a properly completed letter
of transmittal, will be entitled to receive (i) one or more shares of Parent
Common Stock (which shall be in non-certificated book-entry form unless a
physical certificate is requested) representing, in the aggregate, the whole
number of shares of Parent Common Stock, if any, that such holder has the right
to receive pursuant to Section 1.5(b) and (ii) a check in the amount equal to
the cash portion of the Merger Consideration, if any, that such holder has the
right to receive in lieu of fractional shares pursuant to Section 1.7(e) and
dividends and other distributions pursuant to Section 1.7(d) and 1.7(f). No
interest shall be paid or accrued on any Merger Consideration, cash in lieu of
fractional shares or on any unpaid dividends and distributions payable to
holders of Stock Certificates. Until so surrendered, each such Stock Certificate
shall, after the Effective Time, represent for all purposes only the right to
receive such Merger Consideration and any dividends and other distributions in
accordance with Sections 1.7(d) and 1.7(f), and any cash to be paid in lieu of
any fractional share of Parent Common Stock in accordance with Section 1.7(e).

                (c)     Certificate Holder. If any portion of the Merger
Consideration is to be registered in the name of a person other than the person
in whose name the applicable surrendered Stock Certificate is registered, it
shall be a condition to the registration thereof that the surrendered Stock
Certificate shall be properly endorsed or otherwise be in proper form for
transfer and that the person requesting such delivery of the Merger
Consideration shall pay to the Exchange Agent any transfer or other similar
taxes required as a result of such registration in the name of a person other
than the registered holder of such Stock Certificate or establish to the
satisfaction of the Exchange Agent that such tax has been paid or is not
payable.

                (d)     Dividends And Distributions. No dividends or other
distributions with respect to shares of Parent Common Stock issued in the Merger
shall be paid to the holder of any unsurrendered Stock Certificates or
Book-Entry Shares until such Stock Certificates or Book-Entry Shares are
properly surrendered. Following such surrender, there shall be paid, without
interest, to the record holder of the shares of Parent Common Stock issued in
exchange therefor (i) at the time of such surrender, all dividends and other
distributions payable in respect of such shares of Parent Common Stock with a
record date after the Effective Time and a payment date on or prior to the date
of such surrender and not previously paid and (ii) at the appropriate payment
date, the dividends or other distributions payable with respect to such shares
of Parent Common Stock with a record date after the Effective Time but with a
payment date subsequent to such surrender. For purposes of dividends or other
distributions in respect of shares of Parent Common Stock, all shares of Parent
Common Stock to be issued pursuant to the Merger shall be entitled to dividends
pursuant to the immediately preceding sentence as if issued and outstanding as
of the Effective Time.

                (e)     Fractional Shares.

                        (i)     No fractional shares of Parent Common Stock
        shall be issued in the Merger, but in lieu thereof each holder of shares
        of Company Common Stock otherwise entitled to a fractional share of
        Parent Common Stock will be entitled to receive, from the Exchange Agent
        in accordance with the provisions of this Section 1.7(e), a cash payment
        of the fair value of such fractional shares of Parent Common Stock. The
        fair value of the fractional shares to be paid shall equal such holder's
        proportionate interest, if any, in the proceeds from the sale by the
        Exchange Agent in one

                                        5


        or more transactions of shares of Parent Common Stock equal to the
        excess of (x) the aggregate number of shares of Parent Common Stock to
        be delivered to the Exchange Agent by Parent pursuant to Section 1.7(a)
        over (y) the aggregate number of whole shares of Parent Common Stock to
        be distributed to the holders of Stock Certificates pursuant to Section
        1.7(b) (such excess being herein called the "Excess Shares"). As soon as
        practicable after the Effective Time, the Exchange Agent, as agent for
        the holders of the Stock Certificates representing shares of Company
        Common Stock, shall sell the Excess Shares at then prevailing prices on
        the Nasdaq National Market System ("NASDAQ") in the manner provided in
        the following paragraph.

                        (ii)    The sale of the Excess Shares by the Exchange
        Agent, as agent for the holders that would otherwise receive fractional
        shares, shall be executed on the NASDAQ and shall be executed in round
        lots to the extent practicable. Until the proceeds of such sale or sales
        have been distributed to the holders of shares of Company Common Stock,
        the Exchange Agent shall hold such proceeds in trust for the holders of
        shares of Company Common Stock (the "Common Shares Trust"). Parent shall
        pay all commissions, transfer taxes and other out-of-pocket transactions
        costs, including the expenses and compensation of the Exchange Agent,
        incurred in connection with such sale of Excess Shares. The Exchange
        Agent shall determine the portion of the Common Shares Trust to which
        each holder of shares of Company Common Stock shall be entitled, if any,
        by multiplying the amount of the aggregate proceeds comprising the
        Common Shares Trust by a fraction, the numerator of which is the amount
        of the fractional share interest to which such holder of shares of
        Company Common Stock would otherwise be entitled and the denominator of
        which is the aggregate amount of fractional share interests to which all
        holders of shares of Company Common Stock would otherwise be entitled.

                        (iii)   As soon as practicable after the determination
        of the amount of cash, if any, to be paid to holders of shares of
        Company Common Stock in lieu of any fractional shares of Parent Common
        Stock, the Exchange Agent shall make available such amounts to such
        holders of shares of Company Common Stock without interest, subject to
        and in accordance with this Section 1.7.

                (f)     No Further Ownership Rights In Company Common Stock. The
Merger Consideration paid in accordance with the terms of this Article I upon
conversion of any shares of Company Common Stock shall be deemed to have been
paid in full satisfaction of all rights pertaining to such shares of Company
Common Stock, subject, however, to the Surviving Company's obligation to pay any
dividends or make any other distributions with a record date prior to the
Effective Time that may have been declared or made by the Company on such shares
of Company Common Stock in accordance with the terms of this Agreement or prior
to the date of this Agreement and which remain u
npaid at the Effective Time, and
after the Effective Time there shall be no further registration of transfers on
the equity transfer books of the Surviving Company of shares of Company Common
Stock that were outstanding immediately prior to the Effective Time. If, after
the Effective Time, any Stock Certificates formerly representing shares of
Company Common Stock are presented to the Surviving Company or the Exchange
Agent for any reason, they shall be canceled and exchanged as provided in this
Article I.

                                        6


                (g)     Termination Of Exchange Fund. Any portion of the
Exchange Fund that remains undistributed to the holders of Company Common Stock
for six months after the Effective Time shall be delivered to Parent, upon
demand, and any holder of Company Common Stock who has not theretofore complied
with this Article I shall thereafter look only to Parent and/or the Surviving
Company for payment of its claim for Merger Consideration.

                (h)     No Liability. None of Parent, Subsidiary, the Company or
the Exchange Agent shall be liable to any person in respect of any cash or
Parent Common Stock from the Exchange Fund delivered to a public official to the
extent required by any applicable abandoned property, escheat or similar Law. If
any Stock Certificate has not been surrendered immediately prior to such date on
which the Merger Consideration in respect of such Stock Certificate would
otherwise irrevocably escheat to or become the property of any governmental
entity, any such shares, cash, dividends or distributions in respect of such
Stock Certificate shall, to the extent permitted by applicable Law, become the
property of the Surviving Company, free and clear of all claims or interest of
any person previously entitled thereto, except as otherwise provided by Law.

                (i)     Investment Of Exchange Fund. The Exchange Agent shall
invest any cash included in the Exchange Fund, as directed by Parent, in (i)
direct obligations of the United States of America, (ii) obligations for which
the full faith and credit of the United States of America is pledged to provide
for the payment of all principal and interest or (iii) commercial paper
obligations receiving the highest rating from either Moody's Investor Services,
Inc. or Standard & Poor's, a division of The McGraw Hill Companies, or a
combination thereof; provided that, in any such case, no such instrument shall
have a maturity exceeding three months from the date of the investment therein.
Any interest and other income resulting from such investments shall be paid to
Parent.

                (j)     Withholding Rights. Parent and the Exchange Agent shall
be entitled to deduct and withhold from the consideration otherwise payable to
any holder of Company Common Stock pursuant to this Agreement such amounts as
are required to be deducted and withheld with respect to the making of such
payment under the Code, or under any other provision of applicable federal,
state, local or foreign tax Law. To the extent that amounts are so withheld and
paid over to the appropriate taxing authority by Parent or the Exchange Agent,
as applicable, such withheld amounts shall be treated for all purposes of this
Agreement as having been paid to the holders of the shares of Company Common
Stock in respect of which such deduction and withholding was made by Parent or
the Exchange Agent.

                (k)     Lost Certificates. If any Stock Certificate shall have
been lost, stolen, defaced or destroyed, upon the making of an affidavit of that
fact by the person claiming such Stock Certificate to be lost, stolen, defaced
or destroyed and, if reasonably required by the Surviving Company, the posting
by such person of a bond in such reasonable amount as the Surviving Company may
direct as indemnity against any claim that may be made against it with respect
to such Stock Certificate, the Exchange Agent shall pay in respect of such lost,
stolen, defaced or destroyed Stock Certificate the Merger Consideration with
respect to each share of Company Common Stock formerly represented by such Stock
Certificate.

                                        7


        1.8     Taking of Necessary Action; Further Action. Each of Parent,
Subsidiary and the Company shall use all reasonable efforts to take all such
actions as may be necessary or appropriate in order to effectuate the Merger as
promptly as commercially practicable. If at any time after the Effective Time,
any further action is necessary or desirable to carry out the purposes of this
Agreement and to vest the Surviving Company with full right, title and
possession to all assets, property, rights, privileges, powers and franchises of
either the Company or Subsidiary, the officers and managers of the Surviving
Company are fully authorized in the name of each constituent entity or otherwise
to take, and shall take, all such lawful and necessary action. Prior to the
Effective Time, Company shall cause its directors to submit their resignations
from the Company Board, such resignations to be effective at the Effective Time.

        1.9     Reincorporation Merger.

                (a)     On the terms and subject to the conditions set forth in
this Section 1.9, and in accordance with the DGCL and the Colorado Business
Corporation Act (the "CBCA"), including without limitation following the
requisite approval by the Parent Colorado shareholders, immediately prior to the
Effective Time, Parent Colorado shall be merged with and into Parent Delaware
("Reincorporation Merger"), and Parent Delaware shall be the surviving
corporation, and, will be referred to throughout this Agreement as "Parent." The
Merger shall be effective as of the filing of (a) articles of merger (the
"Articles of Merger") executed in accordance with the relevant provisions of the
CBCA with the Secretary of State of the State of Colorado, (b) a certificate of
merger (the "Reincorporation Certificate of Merger") executed in accordance with
the relevant provisions of the DGCL with the Secretary of State of the State of
Delaware, and (c) any other filings or recordings required under the CBCA or the
DGCL. The Reincorporation Merger shall become effective at such time as the
Articles of Merger are duly filed with the Secretary of State of the State of
Colorado and the Reincorporation Certificate of Merger is duly filed with the
Secretary of State of the State of Delaware, or at such subsequent time as
Parent Colorado and Parent Delaware shall agree and specify in the Articles of
Merger and the Reincorporation Certificate of Merger (the time the
Reincorporation Merger becomes effective being the "Reincorporation Effective
Time").

                (b)     The Merger shall have the effects set forth in Section
7-90-204 of the CBCA and Section 259 of the DGCL. The certificate of
incorporation of Parent Delaware, as in effect immediately prior to the
Reincorporation Effective Time, shall be the certificate of incorporation of the
Parent until thereafter changed or amended as provided therein or under the
DGCL. The bylaws of Parent Delaware, as in effect immediately prior to the
Reincorporation Effective Time, shall be the bylaws of the Parent until
thereafter changed or amended as provided therein or under the DGCL. The
directors of Parent Delaware immediately prior to the Effective Time shall be
the directors of the Parent, until the earlier of their resignation or removal
or until their respective successors are duly elected and qualified, as the case
may be. The officers of Parent Delaware immediately prior to the Effective Time
shall be the officers of Parent, until the earlier of their resignation or
removal or until their respective successors are duly elected or appointed and
qualified, as the case may be.

                (c)     At the Reincorporation Effective Time, by virtue of the
Reincorporation Merger and without any action on the part of the holder of any
shares of common stock, par value $0.01 per share, of Parent Colorado ("Parent
Colorado Common Stock"): (i) each issued

                                        8


and outstanding share of capital stock of Parent Colorado Common Stock shall be
converted into and become one fully paid and nonassessable share of common
stock, par value $0.01 per share, of Parent ("Parent Common Stock"); (ii) each
issued and outstanding share of common stock, par value $0.01 per share of
Parent Delaware ("Parent Delaware Common Stock") owned by Parent Colorado
immediately prior to the Reincorporation Effective Time shall automatically be
canceled and cease to exist and no consideration shall be delivered in exchange
therefor; and (iii) each option, warrant, purchase right or other security of
the Parent Colorado issued and outstanding immediately prior to the
Reincorporation Effective Time, if any, shall be converted into and shall be an
identical security of Parent. The same number of shares of Parent Common Stock
shall be reserved for purposes of the exercise of such options, warrants,
purchase rights, units or other securities as is equal to the number of shares
of Parent Colorado Common Stock so reserved as of the Reincorporation Effective
Time.

                (d)     The board of directors of Parent Colorado (the "Parent
Colorado Board"), or the appropriate committee thereof, shall take such action
as is necessary so that, at the Reincorporation Effective Time, each outstanding
option to purchase shares of Parent Colorado Common Stock (a "Parent Colorado
Stock Option") granted under the Parent Colorado Stock Plans, whether or not
vested, shall cease to represent a right to acquire shares of Parent Colorado
Common Stock, and shall thereafter constitute an option to acquire, on the same
terms and conditions as were applicable to such Parent Colorado Stock Option
pursuant to the relevant Parent Colorado Stock Plan under which it was issued
and the agreement evidencing the grant thereof prior to the Effective Time, an
number of shares of Parent Common Stock equal to the number of shares of Parent
Colorado Common Stock subject to such Company Stock Option immediately prior to
the Reincorporation Effective Time. The exercise price or base price per share
of Parent Common Stock subject to any such Parent Colorado Stock Option at and
after the Effective Time shall be an amount equal to the exercise price or base
price per share of Parent Colorado Common Stock subject to such Parent Colorado
Stock Option prior to the Reincorporation Effective Time. The parties
acknowledge that as of the Reincorporation Effective Time, all Parent Colorado
Stock Options granted under the 1993 Incentive Plan, 1994 Incentive Plan, 1995
Nonemployee Director Stock Plan, 2001 Incentive Plan, 2002 Incentive Plan, and
2005 New-Hire Equity Incentive Plan (collectively, the "Parent Colorado Stock
Plans"), if unvested, shall remain unvested in full and shall remain exercisable
in accordance with the terms of the applicable plan documents and award
agreements for each such Parent Colorado Stock Option. The parties will make
good faith efforts to make equitable adjustments to ensure that the conversions
of Parent Colorado Stock Options contemplated by this Section 1.9(d) comply with
Section 409A of the Code. Parent shall take the actions set forth in Section
1.6(b)(ii).

                (e)     At and after the Reincorporation Effective Time, all of
the outstanding certificates which immediately prior thereto represented shares
of Parent Colorado Common Stock, options, warrants, purchase rights or other
securities of Parent Colorado, if any, shall be deemed for all purposes to
evidence ownership of and to represent the shares of the respective Parent
Common Stock, options, warrants, purchase rights, or other securities of Parent,
if any, as the case may be, into which the shares of Parent Colorado Common
Stock, options, warrants, purchase rights or other securities of the Parent
represented by such certificates have been converted as herein provided and
shall be so registered on the books and records of Parent or its transfer agent.
The registered owner of any such outstanding certificate shall, until such

                                        9


certificate shall have been surrendered for transfer or otherwise accounted for
to the Parent or its transfer agent, have and be entitled to exercise any voting
and other rights with respect to, and to receive any dividends and other
distributions upon, the shares of Parent Common Stock, options, warrants,
purchase rights or other securities of Parent, if any, as the case may be,
evidenced by such outstanding certificate, as above provided.

                                    ARTICLE 2
                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

        Except as publicly disclosed by the Company in the Company SEC Reports
(as defined in Section 2.4(a)) filed with the SEC prior to the date of this
Agreement and except as set forth on the disclosure letter (each section of
which qualifies the correspondingly numbered representation and warranty or
covenant to the extent specified therein, provided that any disclosure set forth
with respect to any particular section shall be deemed to be disclosed in
reference to all other applicable sections of this Agreement and the disclosure
letter if the disclosure in respect of the particular section is sufficient on
its face without further inquiry reasonably to inform Parent of the information
required to be disclosed in respect of the other sections to avoid a breach
under the representation and warranty or covenant corresponding to such other
sections) previously delivered by the Company to Parent (the "Company Disclosure
Letter"), the Company hereby represents and warrants to Parent and Subsidiary as
follows. "To the knowledge of the Company" and similar phrases mean the actual
knowledge of the Chief Executive Officer and Chief Financial Officer of the
Company, after due inquiry.

        2.1     Organization.

                (a)     The Company and each corporation, partnership, joint
venture or other legal entity of which the Company owns, directly or indirectly,
50% or more of the stock or other equity interests the holder of which is
generally entitled to vote for the election of the board of directors or other
governing body of such corporation or other legal entity (the "Company
Subsidiaries") is duly organized, validly existing and in good standing under
the Laws of the jurisdiction of its organization and has the requisite corporate
or limited partnership power and authority and any necessary governmental
approvals to own, lease and operate its property and to carry on its business as
now being conducted. The Company and each of the Company Subsidiaries is duly
qualified and/or licensed, as may be required, and in good standing in each of
the jurisdictions in which the nature of the business conducted by it or the
character of the property owned, leased or used by it makes such qualification
and/or licensing necessary, except in such jurisdictions where the failure to be
so qualified and/or licensed would not, individually or in the aggregate, have a
Company Material Adverse Effect. A "Company Material Adverse Effect" means any
change, effect, fact, event, condition or development that would have or be
reasonably likely to have a material adverse effect on (i) the condition
(financial or otherwise), business, operations or assets of the Company and the
Company Subsidiaries considered as a single enterprise, (ii) the ability of the
Company to convey, for value, its interest in the Appalachian gas properties
acquired in March 2004 (described in the Company's Annual Report on Form 10-K
for the year ended September 30, 2004), its interests relating to the loan by
the Company or any of its subsidiaries to GAMXX Energy, Inc. (including, without
limitation, its interests in the Agreement to Purchase and Sell dated September
1, 2005 (as amended) relating to the sale of certain refinery and pipeline
assets) or its equity investment in and note receivable

                                       10


due from Networked Energy LLC or (iii) the ability of the Company to consummate
the transactions contemplated by this Agreement.
 Notwithstanding anything to the
contrary herein, any change, effect, fact, event or condition (x) which
adversely affects the oil and gas exploration and production industry generally
or (y) which arises out of general economic conditions shall not be considered
in determining whether a Company Material Adverse Effect has occurred. The
copies of the restated certificate of incorporation and bylaws of the Company
which are filed as exhibits to the Company's Annual Report on Form 10-K for the
year ended September 30, 1994 and the Company's Quarterly Report on Form 10-Q
for the quarter ended March 31, 1994, respectively, are complete and correct
copies of such documents as in effect on the date of this Agreement.

                (b)     Section 2.1(b) of the Company Disclosure Letter lists
all of the Company Subsidiaries and their respective jurisdictions of
incorporation. All the outstanding shares of capital stock of, or other equity
interests in, each Company Subsidiary have been validly issued and are fully
paid and nonassessable and are owned directly or indirectly by the Company, free
and clear of all pledges, claims, liens, charges, encumbrances and security
interests of any kind or nature whatsoever ("Liens") and free of any other
restriction (including any restriction on the right to vote, sell or otherwise
dispose of such capital stock or other ownership interests). Other than joint
ventures, operating agreements and similar arrangements typical in the Company's
industry entered into in the ordinary course of business, neither the Company
nor any of the Company Subsidiaries directly or indirectly owns any equity or
similar interest in, or any interest convertible into or exchangeable or
exercisable for, any other person that is or would reasonably be expected to be
material to the Company and the Company Subsidiaries considered as a single
entity, other than the shares of Parent Common Stock owned by the Company or any
Company Subsidiary. The term "person" as used in this Agreement will be
interpreted broadly to include any corporation, company, group, partnership or
other entity or individual.

        2.2     Capital Stock of the Company.

                (a)     As of the date of this Agreement, the authorized capital
stock of the Company consists of 25,000,000 shares of Company Common Stock, of
which 7,213,290 are issued and outstanding (not including shares held in
treasury) and 10,000,000 shares of Preferred Stock, of which none are issued and
outstanding. In addition, there are 4,911,044 shares of Company Common Stock
held in the treasury of the Company. Such issued shares of Company Common Stock
have been duly authorized, validly issued, are fully paid and nonassessable and
free of preemptive rights. Except as set forth in Section 2.2(a) of the Company
Disclosure Letter, the Company has not, subsequent to June 30, 2005, declared or
paid any dividend, or declared or made any distribution on, or authorized the
creation or issuance of, or issued, or authorized or effected any split-up or
any other recapitalization of, any of its capital stock, or directly or
indirectly redeemed, purchased or otherwise acquired any of its outstanding
capital stock. The Company has not heretofore agreed to take any such action,
and there are no outstanding contractual obligations of the Company to
repurchase, redeem or otherwise acquire any outstanding shares of capital stock
of the Company.

                (b)     Section 2.2(b) of the Company Disclosure Letter lists
all outstanding options, warrants or other rights to subscribe for, purchase or
acquire from the Company or any Company Subsidiary any capital stock of the
Company or securities convertible into or

                                       11


exchangeable for capital stock of the Company. There are no stock appreciation
rights ("SARs") attached to the options, warrants or rights.

                (c)     Except as otherwise described in this Section 2.2 or as
described in Section 2.2(b) of the Company Disclosure Letter, neither the
Company nor any of the Company Subsidiaries has or is subject to or bound by any
outstanding option, warrant, call, subscription or other right (including any
preemptive or similar right), agreement, arrangement or commitment which (i)
obligates the Company or any of the Company Subsidiaries to issue, sell or
transfer, or repurchase, redeem or otherwise acquire, any shares of the capital
stock or other equity interests of the Company or any of the Company
Subsidiaries, (ii) obligates the Company or any of the Company Subsidiaries to
provide funds to make any investment (in the form of a loan, capital
contribution or otherwise) in any such Company Subsidiary or any other entity,
(iii) restricts the transfer of any shares of capital stock of the Company or
any of the Company Subsidiaries, or (iv) relates to the holding, voting or
disposition of any shares of capital stock of the Company or any of the Company
Subsidiaries. No bonds, debentures, notes or other indebtedness of the Company
or any of the Company Subsidiaries having the right to vote (or convertible
into, or exchangeable for, securities having the right to vote) on any matters
on which the stockholders of the Company or any of the Company Subsidiaries may
vote are issued or outstanding.

        2.3     Authority Relative to this Agreement.

                (a)     The Company has the requisite corporate power to enter
into this Agreement and to carry out its obligations hereunder. The execution
and delivery of this Agreement by the Company, the performance by the Company of
its obligations hereunder and the consummation by the Company of the
transactions contemplated herein have been duly authorized by the Company Board.
No other corporate proceedings on the part of the Company or any of the Company
Subsidiaries are necessary to authorize the execution and delivery of this
Agreement, the performance by the Company of its obligations hereunder and the
consummation by the Company of the transactions contemplated hereby, except for
the approval of the Company's stockholders as contemplated in Section 5.1. This
Agreement has been duly executed and delivered by the Company and constitutes a
valid and binding obligation of the Company, enforceable in accordance with its
terms, except to the extent that its enforceability may be limited by applicable
bankruptcy, insolvency, fraudulent transfer, reorganization or other Laws
affecting the enforcement of creditors' rights generally or by general equitable
principles.

                (b)     Neither the execution and delivery of this Agreement by
the Company nor the consummation by the Company of the transactions contemplated
herein nor compliance by the Company with any of the provisions hereof will (i)
conflict with or result in any breach of the certificate or articles of
incorporation or bylaws of the Company or any of the Company Subsidiaries, (ii)
result in a violation or breach of any provisions of, or constitute a default
(or an event which, with notice or lapse of time or both, would constitute a
default) under, or result in the termination or cancellation of, or accelerate
the performance or increase the fees required by, or result in a right of
termination, amendment or acceleration under, a right to require redemption or
repurchase of or otherwise "put" securities, or the loss of a material benefit
under, or result in the creation of a Lien upon any of the properties or assets
of the Company or any Company Subsidiaries under, any of the terms, conditions
or provisions of any note, bond, mortgage,

                                       12


indenture, deed of trust, license, contract, lease, agreement or other
instrument or obligation of any kind to which the Company or any of the Company
Subsidiaries is a party or by which the Company or any of the Company
Subsidiaries or any of their respective properties or assets may be bound or
(iii) subject to compliance with the statutes and regulations referred to in
subsection (c) below, violate any judgment, ruling, order, writ, injunction,
decree, statute, rule or regulation ("Order") applicable to the Company or any
of the Company Subsidiaries or any of their respective properties or assets,
other than any such event described in items (ii) or (iii) which would not be
reasonably likely to (x) prevent the consummation of the transactions
contemplated hereby or (y) have a Company Material Adverse Effect.

                (c)     Except for compliance with the provisions of the CBCA,
the Securities Exchange Act of 1934 ("34 Act"), the Securities Act of 1933 (the
"33 Act"), the rules and regulations of NASDAQ and the "blue sky" laws of
various states and foreign laws, no action by any governmental authority is
necessary for the Company's execution and delivery of this Agreement or the
consummation by the Company of the transactions contemplated hereby except where
the failure to obtain or take such action would not be reasonably likely to have
a Company Material Adverse Effect.

        2.4     SEC Reports and Financial Statements.

                (a)     Since September 30, 2000, the Company has filed with the
SEC all forms, reports, schedules, registration statements, definitive proxy
statements and other documents (the "Company SEC Reports") required to be filed
by the Company with the SEC. As of their respective dates and, if amended or
superseded by a subsequent filing prior to the date of this Agreement or the
Effective Time, then as of the date of such filing, the Company SEC Reports,
including, without limitation, any financial statements or schedules included
therein, complied or will comply in all material respects with the requirements
of the '33 Act, the '34 Act and the rules and regulations of the SEC promulgated
thereunder applicable to such Company SEC Reports, and none of the Company SEC
Reports contained or will contain any untrue statement of a material fact or
omitted or will omit to state a material fact required to be stated therein or
necessary to make the statements made therein, in the light of the circumstances
under which they were made, not misleading. None of the Company Subsidiaries is
required to file any forms, reports or other documents with the SEC pursuant to
Section 12 or 15 of the '34 Act.

                (b)     The audited and unaudited financial statements
(including, in each case, any related notes and schedules thereto)
(collectively, the "Company Financial Statements") of the Company contained in
the Company SEC Reports have been prepared from the books and records of the
Company and its consolidated subsidiaries, and the Company Financial Statements
present fairly in all material respects the consolidated financial position and
the consolidated results of operations and cash flows of the Company and its
consolidated subsidiaries as of the dates thereof or for the periods presented
therein in conformity with United States generally accepted accounting
principles ("GAAP") applied on a consistent basis during the periods involved
(except as otherwise noted therein, including the related notes, and subject, in
the case of quarterly financial statements, to normal and recurring year-end
adjustments in the ordinary course of business).

                                       13


                (c)     Since September 30, 2004, neither the Company nor any of
the Company Subsidiaries has incurred any liabilities or obligations of any
nature, whether accrued, contingent or absolute or otherwise (including without
limitation under royalty arrangements), except for those arising in the ordinary
course of business consistent with past practice and that would not,
individually or in the aggregate, reasonably be expected to have a Company
Material Adverse Effect.

        2.5     Certain Changes. Since September 30, 2004, the Company and each
of the Company Subsidiaries have conducted their businesses only in the ordinary
course consistent with past practice, and there has not been: (i) any Company
Material Adverse Effect or (ii) any action taken by the Company or any of the
Company Subsidiaries that, if taken during the period from the date of this
Agreement through the Effective Time, would constitute a breach of Section 4.1.

        2.6     Litigation. Except as set forth on Section 2.6 of the Company
Disclosure Letter, there is no suit, action or legal, administrative,
arbitration or other proceeding or governmental investigation (the "Company
Cases") or Order pending or, to the knowledge of the Company, threatened against
the Company or any of the Company Subsidiaries which, if decided adversely to
the Company, considered individually or in the aggregate, is reasonably likely
to have a Company Material Adverse Effect nor is there any judgment, decree,
injunction, rule or order of any court or other governmental entity or
arbitrator outstanding against the Company or any of the Company Subsidiaries
having, or which, considered individually or in the aggregate, is reasonably
likely to have, a Company Material Adverse Effect.

        2.7     Disclosure in Proxy Statement. No information supplied by the
Company for inclusion in the proxy statement to be sent to the shareholders of
the Company in connection with the Shareholders' Meeting (as defined in Section
5.1) (the "Proxy Statement/Prospectus") shall, at the date the Proxy
Statement/Prospectus (or any amendment thereof or supplement thereto) is first
mailed to shareholders and at the time of the Shareholders' Meeting and at the
Effective Time, be false or misleading with respect to any material fact, or
omit to state any material fact required to be stated therein or necessary in
order to make the statements made therein, in the light of the circumstances
under which they are made, not misleading or necessary to correct any statement
in any earlier communication with respect to the solicitation of proxies for the
Shareholders' Meeting which has become false or misleading. No information
supplied by the Company for inclusion in the S-4 with respect to the issuance of
Parent Common Stock in the Merger will, at the time the S-4 becomes effective
under the '33 Act, contain any untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements made therein not misleading. The portions of the Proxy
Statement/Prospectus and S-4 supplied by the Company (whether by inclusion or by
incorporation by reference therein) will comply as to form in all material
respects with the requirements of the '33 Act and the '34 Act and the rules and
regulations of the SEC thereunder. Notwithstanding the foregoing, the Company
makes no representation or warranty with respect to any information supplied by
Parent or Subsidiary which is contained in any of the foregoing documents.

        2.8     Broker's or Finder's Fees. Except for Snyder & Co. ("Snyder"),
whose fees and expenses will be paid by the Company in accordance with the
Company's agreement with

                                       14


Snyder, a copy of which has been provided to Parent, no agent, broker, person or
firm acting on behalf of the Company or under its authority is or will be
entitled to any advisory, commission or broker's or finder's fee from any of the
parties hereto in connection with any of the transactions contemplated herein.

        2.9     Employee Plans.

                (a)     Other than as set forth on Section 2.9(a) of the Company
Disclosure Letter, there are no Employee Benefit Plans established, maintained
or contributed to by the Company. An "Employee Benefit Plan" means any employee
benefit plan, program, policy, practice, agreement or other arrangement
providing benefits to any current or former employee, officer or director of the
Company or any of the Company Subsidiaries or any beneficiary or dependent
thereof that is sponsored or maintained by the Company or any of the Company
Subsidiaries or to which the Company or any of the Company Subsidiaries
contributes or is obligated to contribute, whether or not written, including
without limitation any employee welfare benefit plan within the meaning of
Section 3(1) of the Employee Retirement Income Security Act of 1974, as amen
ded
("ERISA"), any employee pension benefit plan within the meaning of Section 3(2)
of ERISA (whether or not such plan is subject to ERISA) and any bonus,
incentive, deferred compensation, vacation, education assistance, stock
purchase, stock option, severance, employment, change of control or fringe
benefit plan, program or policy.

                (b)     With respect to each Employee Benefit Plan, the Company
has made available to Parent a true, correct and complete copy of: (i) each
writing constituting a part of such Employee Benefit Plan (or to the extent no
copy exists, a materially accurate description); (ii) for the three most recent
plan years, Annual Report (Form 5500 Series), if any; (iii) the current summary
plan description and any material modifications thereto, if required to be
furnished under ERISA; and (iii) the most recent determination letter from the
Internal Revenue Service, if any.

                (c)     Each Employee Benefit Plan that is intended to be a
"qualified plan" within the meaning of Section 401(a) of the Code is either (i)
entitled to reliance with respect to an opinion letter issued to a prototype
plan, pursuant to Revenue Procedure 2005-16, or (ii) is the recipient of a
favorable determination letter from the Internal Revenue Service that has not
been revoked, and to the knowledge of the Company, no event has occurred and no
condition exists that could reasonably be expected to result in the revocation
of any such determination letter.

                (d)     Except as is not reasonably likely, individually or in
the aggregate, to have a Company Material Adverse Effect, (i) all contributions
required to be made to any Employee Benefit Plan (or to any person pursuant to
the terms thereof) have been made or the amount of such payment or contribution
obligation has been reflected in the Company SEC Reports filed with the SEC
prior to the date of this Agreement, (ii) a proper accrual has been made on the
books of account of the Company and any of the Company Subsidiaries for all
contributions, premium payments and other payments due in the current fiscal
year and not paid on or before the Effective Time, and (iii) no contribution,
premium payment or other payment has been made in support of any Employee
Benefit Plan that is in excess of the allowable deduction for federal income tax
purposes for the year with respect to which the contribution was made (whether

                                       15


under Section 162, Section 280G, Section 404, Section 419, Section 419A of the
Code or otherwise).

                (e)     Except as is not reasonably likely, individually or in
the aggregate, to have a Company Material Adverse Effect, with respect to each
Employee Benefit Plan, the Company and the Company Subsidiaries have complied,
and are now in compliance, with all provisions of ERISA, the Code and all Laws
applicable to such Employee Benefit Plans in all material respects. Each
Employee Benefit Plan has been established and administered in accordance with
its terms in all material respects. All reports and filings with governmental
entities (including the Department of Labor, the Internal Revenue Service and
the SEC) required in connection with each Employee Benefit Plan have been timely
made. All disclosures and notices required by Law or Employee Benefit Plan
provisions to be given to participants and beneficiaries in connection with each
Employee Benefit Plan have been properly and timely made. All Employee Benefit
Plans intended to be tax qualified under Section 401(a) or Section 403(a) of the
Code are so qualified. All trusts established in connection with Employee
Benefit Plans intended to be tax exempt under Section 501(a) or (c) of the Code
are so tax exempt.

                (f)     No Employee Benefit Plan is subject to Title IV of ERISA
(including, without limitation, any multiemployer plan within the meaning of
Section 4001(a)(3) of ERISA) and no liability under Title IV of ERISA has been
or is expected to be incurred by the Company, any of the Company Subsidiaries or
any other entities that are, along with the Company or any of the Company
Subsidiaries, treated as a single employer under Sections 414(b), (c) or (m) of
the Code.

                (g)     Other than as set forth on Section 2.9(g) of the Company
Disclosure Letter, no Employee Benefit Plan is subject to Section 409A of the
Code.

                (h)     Neither the Company nor any of the Company Subsidiaries
sponsors any of the following: (i) a plan that is or is intended to be an
employee stock ownership plan as defined in Section 4975(c)(7) of the Code,
(iii) a nonqualified deferred compensation arrangement, (iv) a multiemployer
plan as defined in Section 3(37) of ERISA or Section 414(f) of the Code, (v) a
multiple employer plan maintained by more than one employer as defined in
Section 413(c) of the Code, (vi) a plan that owns any employer securities as an
investment, (vii) a plan that provides benefits (or provides increased benefits
or vesting) as a result of a change in control of the Company or any of the
Company Subsidiaries, (viii) a plan that is maintained pursuant to collective
bargaining, or (ix) a plan that is funded, in whole or in part, through a
voluntary employees' beneficiary association exempt from tax under Section
501(c)(9) of the Code.

                (i)     Neither the Company nor any of the Company Subsidiaries
have any material liability for life, health or medical benefits to former
employees or beneficiaries or dependents thereof, except for health continuation
coverage as required by Section 4980B of the Code or Part 6 of Title I of ERISA.

                (j)     Except as set forth on Section 2.9(j) of the Company
Disclosure Letter, the consummation of the transactions contemplated by this
Agreement will not, either alone or in connection with termination of
employment, (i) entitle any current or former employee or officer

                                       16


of the Company or the Company Subsidiaries to severance pay or any other
material payment, (ii) accelerate the time of payment or vesting, or increase
the amount of compensation due any such employee or officer or (iii) give rise
to the payment of any amount that would not be deductible under Section 280G of
the Code.

                (k)     To the knowledge of the Company, there is no suit,
action or legal, administrative, arbitration or other proceeding or governmental
investigation or Order pending with regard to any Employee Benefit Plan other
than routine uncontested claims for benefits. To the knowledge of the Company,
no Employee Benefit Plan is currently under examination or audit by the
Department of Labor, the Internal Revenue Service or the Pension Benefit
Guaranty Corporation. To the knowledge of the Company, neither the Company nor
any of the Company Subsidiaries have any liability (either directly or as a
result of indemnification) for (and the transactions contemplated by this
Agreement will not cause any liability for): (i) any excise taxes under Section
4971 through Section 4980B, Section 4999, Section 5000 or any other Section of
the Code, (ii) any penalty under Section 502(i), Section 502(l), Part 6 of Title
I or any other provision of ERISA, or (iii) any excise taxes, penalties, damages
or equitable relief as a result of any prohibited transaction, breach of
fiduciary duty or other violation under ERISA or any other applicable Law. All
accruals required under FAS 106 and FAS 112 have been properly accrued on the
most recently issued quarterly financial statements. No condition, agreement or
Employee Benefit Plan provision limits the right of any company to amend, cut
back or terminate any Employee Benefit Plan (except to the extent such
limitation arises under ERISA). Neither the Company nor any of the Company
Subsidiaries have any liability for life insurance, death or medical benefits
after separation from employment other than (i) death benefits under the
Employee Benefit Plans and (ii) health care continuation benefits described in
Section 4980B of the Code.

                (l)     The Company does not have any outstanding loans to any
employees of the Company.

        2.10    Board Recommendation; Company Action; Requisite Vote of the
Company's Stockholders.

                (a)     The Company Board has by resolutions duly adopted by the
unanimous vote of its entire board of directors at a meeting of such board duly
called and held on November 8, 2005, determined that the Merger is fair to and
in the best interests of the Company and its stockholders, approved and declared
advisable this Agreement, the Merger and the other transactions contemplated
hereby and recommended that the stockholders of the Company approve and adopt
this Agreement and the Merger. In connection with such approval, the Company
Board received from Snyder an opinion to the effect that the consideration to be
paid to the stockholders of the Company in the Merger is fair to the
stockholders of the Company from a financial point of view subject to the
assumptions and qualifications in such opinion. The Company has been authorized
by Snyder to include such opinion in its entirety in the Proxy
Statement/Prospectus, so long as such inclusion is in form and substance
reasonably satisfactory to Snyder and its counsel.

                (b)     The affirmative vote of stockholders of the Company
required for approval and adoption of this Agreement and the Merger is and will
be no greater than a majority

                                       17


of the outstanding shares of Company Common Stock and no other vote of any
holder of the Company's securities is required for the approval and adoption of
this Agreement or the Merger.

        2.11    Taxes.

                (a)     Except as would not have a Company Material Adverse
Effect, the Company and the Company Subsidiaries have timely filed all federal,
state, local, and other tax returns and reports required to be filed on or
before the Effective Time by the Company and each Company Subsidiary under
applicable Laws and have paid all required taxes (including any additions to
taxes, penalties and interest related thereto) due and payable on or before the
date hereof and all such tax returns and reports were true, complete and
correct. The Company and the Company Subsidiaries have withheld and paid over
all taxes required to have been withheld and paid over, and complied in all
material respects with all information reporting and backup withholding
requirements, including the maintenance of required records with respect
thereto, in connection with amounts paid or owing to any employee, creditor,
independent contractor or other third party. There are no material encumbrances
on any of the assets, rights or properties of the Company or any Company
Subsidiary with respect to taxes, other than liens for taxes not yet due and
payable or for taxes that the Company or a Company Subsidiary is contesting in
good faith through appropriate proceedings. The Company is not a party to any
tax sharing agreements, other than agreements between the Company and the
Company Subsidiaries.

                (b)     Except as set forth on Section 2.11(b) of the Company
Disclosure Letter, no audit of the tax returns of the Company or any Company
Subsidiary is pending or, to the knowledge of the Company, threatened. No
deficiencies have been asserted against the Company or any Company Subsidiary as
a result of examinations by any state, local, federal or foreign taxing
authority and no issue has been raised, either to the knowledge of the Company
or in writing, by any examination conducted by any state, local, federal or
foreign taxing authority that, by application of the same principles, might
result in a proposed deficiency for any other period not so examined. Neither
the Company nor any Company Subsidiary is subject to any private letter ruling
of the Internal Revenue Service or comparable rulings of other tax authorities
that will be binding on the Company or any Company Subsidiary with respect to
any period following the Closing Date.

                (c)     There are no agreements, waivers of statutes of
limitations, or other arrangements providing for extensions of time in respect
of the assessment or collection of any unpaid taxes against the Company or any
Company Subsidiary. The Company and each Company Subsidiary have disclosed on
their federal income tax returns all positions taken therein that could, if not
so disclosed, give rise to a substantial understatement penalty within the
meaning of Section 6662 of the Code. Except as set forth on Section 2.11(c) of
the Company Disclosure Letter, the Company is not a party to any arrangement
that constitutes a partnership for purposes of subchapter K of Chapter 1 of
Subtitle A of the Code. The Company has properly identified any transactions
that qualify as hedges under Treasury Regulation Section 1.1221-2 as hedges
under Treasury Regulation Section 1.1221-2(f).

                (d)     Neither the Company nor any Company Subsidiary is a
party to any safe harbor lease within the meaning of Section 168(f)(8) of the
Code, as in effect prior to amendment by The Tax Equity and Fiscal
Responsibility Act of 1982. None of the property

                                       18


owned by the Company nor a Company Subsidiary is "tax-exempt use property"
within the meaning of Section 168(h) of the Code. Neither the Company nor any
Company Subsidiary is required to make any adjustment under Code Section 481(a)
by reason of a change in accounting method or otherwise except possibly by
reason of the Merger. Neither the Company nor any Company Subsidiary has been a
member of an affiliated group of corporations filing a consolidated federal
income tax return (other than a group the common parent of which was the
Company) or has any liability for the taxes of another person (other than the
Company or any Company Subsidiary) arising pursuant to Treasury Regulation
Section 1.1502-6 or analogous provision of state, local or foreign Law, or as a
transferee or successor, or by contract, tax sharing agreement, tax
indemnification agreement, or otherwise. Neither the Company nor any Company
Subsidiary has filed a consent under Section 341(f) of the Code with respect to
the Company or any Company Subsidiary. Neither the Company nor any Company
Subsidiary has been a party to any distribution occurring during the two year
period prior to the date of this Agreement in which the parties to such
distribution treated the distribution as one to which Section 355 of the Code
applied, except for distributions occurring among members of the same group of
affiliated corporations filing a consolidated federal income tax return.

                (e)     The Company has not taken, or agreed to take any action,
and has no knowledge of any condition, that would prevent the Merger from
qualifying as a reorganization described in Section 368(a) of the Code.

        2.12    Environmental. Except for such matters that are not,
individually or in the aggregate, reasonably likely to have a Company Material
Adverse Effect and except as set forth on Section 2.12 of the Company Disclosure
Letter:

                (a)     To the knowledge of the Company, there is no condition
existing on any real property or other asset previously or currently owned,
leased or operated by the Company or any Company Subsidiary or resulting from
operations conducted thereon that would reasonably be expected to be subject to
remediation obligations under Environmental Laws or give rise to any liability
to the Company or any Company Subsidiary under Environmental Laws or constitute
a violation of any Environmental Laws, and the Company and all Company
Subsidiaries are otherwise in compliance, in all material respects, with all
applicable Environmental Laws.

                (b)     None of the Company and the Company Subsidiaries, no
real property or other asset previously or currently owned, leased or operated
by the Company or any Company Subsidiary, nor the operations previously or
currently conducted thereon or in relation thereto by the Company or any Company
Subsidiary, are, to the knowledge of the Company, subject to an
y pending or
threatened action, suit, investigation, inquiry or proceeding relating to any
Environmental Laws by or before any court or other governmental authority.

                (c)     The Company has made available to Parent all material
site assessments, compliance audits, and other similar studies in its
possession, custody or control and prepared since October 1, 2000 relating to
(i) the environmental conditions on, under or about the properties or assets
previously or currently owned, leased or operated by the Company, or any
predecessor in interest thereto and (ii) any Hazardous Substances used, managed,
handled, transported, treated, generated, stored, discharged, emitted, or
otherwise released by the

                                       19


Company or any other Person on, under, about or from any real property or other
assets previously or currently owned, leased or operated by the Company;

                (d)     The Company has not received any communication, whether
from a governmental authority, citizen's group, employee or otherwise, alleging
that it is liable under or not in compliance with any Environmental Law.

                (e)     All material permits, notices and authorizations, if
any, required under any Environmental Law to be obtained or filed in connection
with the operation or use of any real property or other asset owned, leased or
operated by the Company or any Company Subsidiary, including without limitation
past or present treatment, storage, disposal or release of a Hazardous Substance
or solid waste into the environment, have been duly obtained or filed, and the
Company is in compliance in all material respects with the terms and conditions
of all such permits, notices and authorizations.

                (f)     Hazardous Substances have not been released, disposed of
or arranged to be disposed of by the Company or any Company Subsidiary, in
violation of, or in a manner or to a location that would reasonably be expected
to give rise to a material liability under, or cause the Company to be subject
to remediation obligations under, any Environmental Laws.

                (g)     None of the Company and the Company Subsidiaries has
assumed, contractually or, to the knowledge of the Company, by operation of Law,
any liabilities or obligations of third parties under any Environmental Laws,
except in connection with the acquisition of assets or entities associated
therewith.

                (h)     "Environmental Laws" means any federal, state and local
health, safety and environmental laws, regulations, orders, permits, licenses,
approvals, ordinances, rule of common law, and directives including without
limitation the Clean Air Act, the Clean Water Act, the Resource Conservation and
Recovery Act ("RCRA"), the Comprehensive Environmental Response, Compensation,
and Liability Act ("CERCLA"), the Occupational Health and Safety Act, the Toxic
Substances Control Act, the Endangered Species Act, the Oil Pollution Act and
any similar foreign, state or local law, and including without limitation all
Laws relating to or governing the use, management, treatment, transport,
generation, storage, discharge or disposal of Hazardous Substances.

                (i)     "Hazardous Substance" means (i) any "hazardous
substance," as defined by CERCLA, (ii) any "hazardous waste," as defined by
RCRA, or (iii) any pollutant or contaminant or hazardous, dangerous or toxic
chemical or material or any other substance including, but not limited to,
asbestos, buried contaminants, regulated chemicals, flammable explosives,
radioactive materials (including without limitation naturally occurring
radioactive materials), polychlorinated biphenyls, natural gas, natural gas
liquids, liquified natural gas, condensates, petroleum (including without
limitation crude oil and petroleum products), including without limitation any
Hazardous Substance regulated by, or that could result in the imposition of
liability under, any Environmental Law or other applicable Law of any applicable
governmental authority, all as amended.

                                       20


        2.13    Compliance with Laws. The Company and the Company Subsidiaries
are in compliance in all material respects with any applicable law, rule or
regulation of any United States federal, state, local or foreign government or
agency thereof (any such law, rule or regulation, a "Law") that materially
affects the business, properties or assets of the Company and the Company
Subsidiaries (including, without limitation, the Sarbanes-Oxley Act of 2002),
and no notice, charge, claim, action or assertion has been received by the
Company or any Company Subsidiary or, to the Company's knowledge, has been
filed, commenced or threatened against the Company or any Company Subsidiary
alleging any such violation, nor do reasonable grounds for any of the foregoing
exist, that would be reasonably likely to have a Company Material Adverse
Effect. All licenses, permits and approvals required under such Laws are in full
force and effect, except where the failure to be in full force and effect would
not, individually or in the aggregate, be reasonably likely to have a Company
Material Adverse Effect.

        2.14    Employment Matters. Neither the Company nor any Company
Subsidiary: (i) is a party to or otherwise bound by any collective bargaining
agreement, contract or other agreement or understanding with a labor union or
labor organization, nor is any such contract or agreement presently being
negotiated, nor, to the knowledge of the Company, is there, nor has there been
in the last five years, a representation campaign respecting any of the
employees of the Company or any of the Company Subsidiaries, and, to the
knowledge of the Company, there are no campaigns being conducted to solicit
cards from employees of Company or any of the Company Subsidiaries to authorize
representation by any labor organization; (ii) is a party to, or bound by, any
consent decree with, or citation by, any governmental agency relating to
employees or employment practices which would reasonably be expected to have a
Company Material Adverse Effect; or (iii) is the subject of any proceeding
asserting that it has committed an unfair labor practice or is seeking to compel
it to bargain with any labor union or labor organization nor, as of the date of
this Agreement, is there pending or, to the knowledge of the Company,
threatened, any labor strike, dispute, walkout, work stoppage, slow-down or
lockout involving the Company or any of the Company Subsidiaries which, with
respect to any event described in this clause (iii), would, individually or in
the aggregate, reasonably be expected to have a Company Material Adverse Effect.

        2.15    Rights Agreement. The Stockholder Rights Plan, adopted on April
21, 1994 and amended on December 31, 2002 (the "Rights Agreement"), and the
rights granted thereunder (the "Rights"), expired as of September 30, 2004, and
have no further force or effect. None of the parties hereto have or will have
any obligations under the Rights Agreement or relating to the Rights.

        2.16    Oil and Gas Reserves. The Company has furnished to Parent the
Company's estimate of Company's and Company Subsidiaries' oil and gas reserves
as of September 30, 2004, as audited by Ralph E. Davis & Associates, Inc.
("Company Reserve Report"). Except as would not, individually or in the
aggregate, reasonably be expected to have a Company Material Adverse Effect, to
the Company's knowledge, the factual, non-interpretive data on which the Company
Reserve Report was based for purposes of estimating the oil and gas reserves set
forth in the Company Reserve Report was accurate in all material respects.

        2.17    Certain Contracts and Arrangements. Neither the Company nor any
of the Company Subsidiaries is a party to or bound by any agreement or other
arrangement that limits

                                       21


or otherwise restricts the Company or any of its Subsidiaries or any of their
respective affiliates or any successor thereto, or that would, after the
Effective Time, to the knowledge of the Company, materially limit or restrict
Subsidiary or the Surviving Company or any of their subsidiaries or any of their
respective affiliates or any successor thereto, from engaging or competing in
the oil and gas exploration and production business in any significant
geographic area, except for joint ventures, area of mutual interest agreements
entered into in connection with prospect reviews and similar arrangements
entered into in the ordinary course of business. Neither the Company nor any
Company Subsidiary is in breach or default under any contract filed or
incorporated by reference as an exhibit to the Company's Annual Report on Form
10-K for the year ended September 30, 2004 nor, to the knowledge of the Company,
is any other party to any such contract in breach or default thereunder, except
such breach or default as would not, individually or in the aggregate,
reasonably be expected to have a Company Material Adverse Effect.

        2.18    Financial and Commodity Hedging. Except as set forth on Section
2.18 of the Company Disclosure Letter, neither the Company nor any of the
Company Subsidiaries is a party to any hedging agreements or arrangements
(including fixed price contracts, collars, swaps, caps, hedges and puts).

        2.19    Properties. Except as set forth on Section 2.19 of the Company
Disclosure Letter, or except for goods and other property sold, used or
otherwise disposed of since September 30, 2004 in the ordinary course of
business, the Company and the Company Subsidiaries have good and defensible
title to all oil and gas properties forming the basis for the reserves reflected
in the Company Reserve Report as attributable to interests owned by the Company
and the Company Subsidiaries, and to all other properties, interests in
properties and assets, real and personal, reflected in the Company SEC Reports
filed prior to the date of this Agreement as owned by the Company and the
Company Subsidiaries, free and clear of any Liens, other than liens for taxes
not yet due and payable and mechanic's, materialman's, supplier's, vendor's or
similar liens arising in the ordinary course of business securing amounts that
are not delinquent. The leases and other agreements pursuant to which the
Company or any of the Company Subsidiaries leases or otherwise acquires or
obtains operating rights affecting any real or personal property are, in all
material respects, in good standing, valid and effective, and the rentals due by
the Company or any Company Subsidiary to any lessor of any such oil and gas
leases have been properly paid. No event has occurred or failed to occur which
constitutes, or which, with giving of notice would constitute, a default,
violation or breach under any material lease.

        2.20    Accounting Controls. The Company has devised and maintained
systems of internal accounting controls sufficient to provide reasonable
assurances, in the judgment of the Company Board, that (a) all material
transactions are executed in accordance with management's general or specific
authorization; (b) all material transactions are recorded as necessary to permit
the preparation of financial statements in conformity with generally accepted
accounting principals consistently applied with respect to any criteria
applicable to such statements, (c) access to the material property and assets of
the Company is permitted only in accordance with management's general or
specific authorization; and (d) the recorded accountability for items is
compared with the actual levels at reasonable intervals and appropriate action
is taken with respect to any differences.

                                       22


        2.21    Take-or-Pay Deliveries. Except as set forth on Section 2.21 of
the Company Disclosure Letter, there are no calls on the Company's oil or gas
production and the Company has no obligation to deliver oil or gas pursuant to
any take-or-pay, prepayment or similar arrangement without receiving full
payment therefor.

        2.22    Gas Imbalances. The Company does not have any imbalances in gas
production that, individually or in the aggregate, would reasonably be expected
to have a Material Adverse Effect.

        2.23    Intellectual Property. The Company does not own any patents,
patent applications, trademarks or trademark applications or copyrights or
copyright applications ("Intellectual Property"). All accounting computer
software used in the conduct of the Company's business is owned or licensed by
Castle Exploration Co., Inc. and is made available to the Company under the
Software Agreement with Oil & Gas Information Systems, Inc. No person or entity
has notified the Company that its use of any Intellectual Property infringes on
the rights of any person or entity. No claims are pending or, to the Company's
knowledge, threatened that it is infringing upon the rights of any person or
entity with regard to any intellectual property.

        2.24    GAMXX. Since September 30, 2004, neither the Company nor any of
the Company Subsidiaries has incurred any liabilities or obligations of any
nature, whether accrued, contingent or absolute or otherwise (including without
limitation under royalty arrangements), relating to the Company's relationship
with GAMXX Energy, Inc. and its affiliates, except for those arising in the
ordinary course of business consistent with past practice and that would not,
individually or in the aggregate, reasonably be expected to have a Company
Material Adverse Effect.

        2.25    Investment Company. Neither the Company nor any Company
Subsidiary is an "investment company" as defined in Section 3 of the federal
Investment Company Act of 1940, as amended, and the rules and regulations
thereunder.

        2.26    Texaco Settlement. The Settlement Agreement and Mutual Release,
dated September 19, 2005, by and among Chevron Environmental Management Company,
Chevron Environmental Service Company and Texaco Inc., and the Company, Indian
Refining I Limited Partnership, Indian Refining & Marketing I Inc. and William
S. Sudhaus (the "Settlement Agreement"), whereby the Company agreed to make a
cash payment to Chevron of $5.75 million, constitutes a complete release and
indemnification of the Company for any and all environmental claims with respect
to the Indian Refinery. The Settlement Agreement is a valid and binding
obligation of the parties thereto, enforceable in accordance with its terms. The
Company paid the settlement amount on October 26, 2005 and has no further
liability relating to the Indian Refinery.

                                    ARTICLE 3
             REPRESENTATIONS AND WARRANTIES OF PARENT AND SUBSIDIARY

        Except as publicly disclosed by Parent Colorado in the Parent SEC
Reports (as defined in Section 3.4(a)) filed with the SEC prior to the date of
this Agreement, Parent and Subsidiary

                                       23


hereby represent and warrant to the Company as follows. "To the knowledge of
Parent" and similar phrases mean the actual knowledge of the Chief Executive
Officer and Chief Financial Officer of Parent, after due inquiry.

        3.1     Organization.

                (a)     Each of Parent Delaware, Parent Colorado, Subsidiary and
Parent Subsidiaries (as defined below) is duly organized, validly existing and
in good standing under its jurisdiction of incorporation or formation. Each of
Parent, Subsidiary and Parent Subsidiaries has the requisite corporate or
limited liability company power and authority and any necessary governmental
approvals to own, lease and operate its property and to carry on its business as
now being conducted. Each of Parent, Subsidiary and Parent Subsidiaries is duly
qualified and/or licensed, as may be required, and in good standing in each of
the jurisdictions in which the nature of the business conducted by it or the
character of the property owned, leased or used by it makes such qualification
and/or licensing necessary, except in such jurisdictions where the failure to be
so qualified and/or licensed would not, individually or in the aggregate, hav
e a
Parent Material Adverse Effect. A "Parent Material Adverse Effect" means any
change, effect, fact, event, condition or development that would have or be
reasonably likely to have a material adverse effect on (i) the condition
(financial or otherwise), business, operations or assets of Parent and each
corporation, partnership, joint venture or other legal entity of which Parent
owns, directly or indirectly, 50% or more of the stock or other equity interests
the holder of which is generally entitled to vote for the election of the board
of directors or other governing body of such corporation or other legal entity
(the "Parent Subsidiaries") considered as a single enterprise or (ii) the
ability of Parent to consummate the transactions contemplated by this Agreement.
Notwithstanding anything to the contrary herein, any change, effect, fact, event
or condition which adversely affects the oil and gas exploration and production
industry generally or which arises out of general economic conditions shall not
be considered in determining whether a Parent Material Adverse Effect has
occurred. The copies of the articles of incorporation, the articles of amendment
thereto and the bylaws of Parent Colorado which are filed as exhibits to Parent
Colorado's Annual Report on Form 10-K for the year ended June 30, 2004, are
complete and correct copies of such documents as in effect on the date of this
Agreement. The copies of the certificate of incorporation and bylaws of Parent
Delaware previously provided to the Company are complete and correct copies of
such documents as in effect on the date of this Agreement.

                (b)     All the outstanding shares of capital stock of, or other
equity interests in, each Parent Subsidiary have been validly issued and are
fully paid and nonassessable and are owned directly or indirectly by Parent,
free of all Liens and free of any other restriction (including any restriction
on the right to vote, sell or otherwise dispose of such capital stock or other
ownership interests). Neither Parent nor any of the Parent Subsidiaries directly
or indirectly owns any equity or similar interest in, or any interest
convertible into or exchangeable or exercisable for, any other person that is or
would reasonably be expected to be material to Parent and the Parent
Subsidiaries considered as a single entity.

                                       24


        3.2     Capital Stock.

                (a)     As of September 30, 2005, the authorized capital stock
of Parent Colorado consists of 300,000,000 shares of Parent Colorado Common
Stock, of which 47,683,000 are issued and outstanding and 3,000,000 shares of
Preferred Stock, none of which are issued and outstanding. All such shares of
Parent Colorado Common Stock and Preferred Stock have been duly authorized,
validly issued, and are fully paid and non-assessable and free of preemptive
rights. Parent Colorado has not, subsequent to June 30, 2005, declared or paid
any dividend, or declared or made any distribution on, or authorized the
creation or issuance of, or issued, or authorized or effected any split-up or
any other recapitalization of, any of its capital stock, or directly or
indirectly redeemed, purchased or otherwise acquired any of its outstanding
capital stock. Parent Colorado has not heretofore agreed to take any such
action, and there are no outstanding contractual obligations of Parent Colorado
to repurchase, redeem or otherwise acquire any outstanding shares of capital
stock of Parent Colorado.

                (b)     As of the date hereof, the authorized capital stock of
Parent Delaware consists of 300,000,000 shares of Parent Delaware Common Stock,
of which 100 are issued and outstanding and owned of record and beneficially by
Parent Colorado and 3,000,000 shares of Preferred Stock, none of which are
issued and outstanding. All such shares of Parent Delaware Common Stock and
Preferred Stock have been duly authorized, validly issued, and are fully paid
and non-assessable and free of preemptive rights. Parent Delaware has not
declared or paid any dividend, or declared or made any distribution on, or
authorized the creation or issuance of, or issued, or authorized or effected any
split-up or any other recapitalization of, any of its capital stock, or directly
or indirectly redeemed, purchased or otherwise acquired any of its outstanding
capital stock. Parent Delaware has not heretofore agreed to take any such
action, and there are no outstanding contractual obligations of Parent Delaware
to repurchase, redeem or otherwise acquire any outstanding shares of capital
stock of Parent Delaware.

                (c)     As of September 30, 2005, there were 3,399,910
outstanding options to subscribe for, purchase or acquire from Parent or any
Parent Subsidiary capital stock of Parent or securities convertible into or
exchangeable for capital stock of Parent. Under Parent's 2004 Incentive Plan,
1,034,700 options and 179,680 shares of restricted shares have been granted, and
494,620 incentive plan awards remained available. There are no other options,
warrants or rights of Parent or Parent Subsidiary and there are no SARs attached
to any options, warrants or rights of Parent or Parent Subsidiary.

                (d)     Except as otherwise described in this Section 3.2(d) or
as described in Section 3.2(c) above, none of Parent nor any of the Parent
Subsidiaries has or is subject to or bound by any outstanding option, warrant,
call, subscription or other right (including any preemptive or similar right),
agreement, arrangement or commitment which (i) obligates Parent, Subsidiary or
any Parent Subsidiary to issue, sell or transfer, or repurchase, redeem or
otherwise acquire, any shares of the capital stock or other equity interests of
Parent, Subsidiary or any Parent Subsidiary, (ii) restricts the transfer of more
than 5% of the shares of capital stock of Parent, Subsidiary or any Parent
Subsidiary, or (iii) relates to the holding, voting or disposition of more than
5% of the shares of capital stock or membership units of Parent, Subsidiary or
any Parent Subsidiary, as applicable. No bonds, debentures, notes or other
indebtedness of Parent, Subsidiary or any of the Parent Subsidiaries having the
right to vote (or convertible into, or

                                       25


exchangeable for, securities having the right to vote) on any matters on which
the stockholders or members, as applicable, of Parent, Subsidiary or any of the
Parent Subsidiaries may vote are issued or outstanding.

                (e)     The authorized membership units of Subsidiary and the
issued and outstanding membership units of Subsidiary as of the date hereof are,
and as of the Effective Time will be wholly owned by Parent, except as otherwise
contemplated by this Agreement. The shares of Parent Common Stock to be issued
in the Merger and the Reincorporation Merger will be duly authorized by all
necessary corporate action on the part of Parent and when issued in accordance
with the terms hereof will be validly issued, fully paid, non-assessable and
free of preemptive rights.

        3.3     Authority Relative to this Agreement.

                (a)     Each of Parent and Subsidiary has the requisite
corporate or limited liability power to enter into this Agreement and to carry
out its obligations hereunder. The execution and delivery of this Agreement by
Parent and Subsidiary, the performance by Parent and Subsidiary of their
respective obligations hereunder and the consummation by Parent and Subsidiary
of the transactions contemplated herein have been duly authorized by the
respective boards of directors or managers of Parent and Subsidiary, and no
other corporate or limited liability company proceedings on the part of Parent
or Subsidiary or any of the Parent Subsidiaries are necessary to authorize the
execution and delivery of this Agreement, the performance by Parent and
Subsidiary of their respective obligations hereunder and the consummation by
Parent and Subsidiary of the transactions contemplated hereby except for the
approval of Parent Colorado stockholders as contemplated by Section 5.1(b). This
Agreement has been duly executed and delivered by Parent and Subsidiary and
constitutes a valid and binding obligation of Parent and Subsidiary, enforceable
in accordance with its terms, except to the extent that its enforceability may
be limited by applicable bankruptcy, insolvency, fraudulent transfer,
reorganization or other Laws affecting the enforcement of creditors' rights
generally or by general equitable principles. Parent Colorado, as the sole
member of Subsidiary, has approved this Agreement, the Merger and the
Reincorporation Merger. Parent Colorado, as the sole stockholder of Parent
Delaware, has approved this Agreement, the Merger and the Reincorporation
Merger.

                (b)     Neither the execution and delivery of this Agreement by
Parent or Subsidiary, nor the consummation by Parent or Subsidiary of the
transactions contemplated herein nor compliance by Parent and Subsidiary with
any of the provisions hereof will (i) conflict with or result in any breach of
the organizational documents of Parent, Subsidiary or any of the Parent
Subsidiaries or (ii) result in a violation or breach of any provisions of, or
constitute a default (or an event which, with notice or lapse of time or both,
would constitute a default) under, or result in the termination, or
cancellation, of, or accelerate the performance or increase the fees required
by, or result in a right of termination, amendment or acceleration under, a
right to require redemption or repurchase of or otherwise "put" securities, or
the loss of a material benefit under or result in the creation of any Lien upon
any of the properties or assets of Parent or any of the Parent Subsidiaries
under, any of the terms, conditions or provisions of any note, bond, mortgage,
indenture, deed of trust, license, contract, lease, agreement or other
instrument or obligation of any kind to which Parent or any of the Parent
Subsidiaries is a party or by which

                                       26


Parent or any of the Parent Subsidiaries or any of their respective properties
or assets may be bound or (iii) subject to compliance with the statutes and
regulations referred to in subsection (c) below, violate any Order applicable to
Parent or any of the Parent Subsidiaries or any of their respective properties
or assets other than any such event described in items (ii) or (iii) which would
not (x) prevent the consummation of the transactions contemplated hereby or (y)
have a Parent Material Adverse Effect. No approval of Parent's stockholders is
required to approve the Merger or this Agreement or the transactions
contemplated herein, other than the Reincorporation Merger.

                (c)     Except for compliance with the provisions of DGCL, CBCA,
the '33 Act, the '34 Act and the "blue sky" laws of various states and foreign
laws, no action by any governmental authority is necessary for Parent's or
Subsidiary's execution and delivery of this Agreement or the consummation by
Parent or Subsidiary of the transactions contemplated hereby except where the
failure to obtain or take such action would not have a Parent Material Adverse
Effect.

        3.4     SEC Reports and Financial Statements.

                (a)     Since June 30, 2003, Parent Colorado has filed with the
SEC all forms, reports, schedules, registration statements, definitive proxy
statements and other documents (the "Parent SEC Reports") required to be filed
by Parent Colorado with the SEC. As of their respective dates and, if amended or
superseded by a subsequent filing prior to the date of this Agreement or the
Effective Time, then as of the date of such filing, the Parent SEC Reports,
including, without limitation, any financial statements or schedules included
therein, complied or will comply in all material respects with the requirements
of the '33 Act, the '34 Act and the rules and regulations of the SEC promulgated
thereunder applicable to such Parent SEC Reports, and none of Parent SEC Reports
contained or will contain any untrue statement of a material fact or omitted or
will omit to state a material fact required to be stated therein or necessary to
make the statements made therein, in the light of the circumstances under which
they were made, not misleading.

                (b)     The audited and unaudited financial statements
(including, in each case, any related notes and schedules thereto)
(collectively, the "Parent Financial Statements") of Parent Colorado contained
in Parent SEC Reports have been prepared from the books and records of Parent
Colorado and its consolidated subsidiaries, and the Parent Financial Statements
present fairly in all material respects the consolidated financial position and
the consolidated results of operations and cash flows of Parent Colorado and its
consolidated subsidiaries as of the dates thereof or for the periods presented
therein in conformity with GAAP applied on a consistent basis during the periods
involved (except as otherwise noted therein, including the related notes, and
subject, in the case of quarterly financial statements, to normal and recurring
year-end adjustments in the ordinary course of business and that have not been
and are not expected to be material in amount).

        3.5     Litigation. There is no suit, action or legal, administrative,
arbitration or other proceeding or governmental investigation (the "Parent
Cases") or Order pending or, to the knowledge of Parent, threatened against
Parent or any of the Parent Subsidiaries, considered individually or in the
aggregate, that is reasonably likely to have a Parent Material Adverse

                                       27


Effect nor is there any judgment, decree, injunction, rule or order of any court
or other governmental entity or arbitrator outstanding against Parent or any of
the Parent Subsidiaries having, or which considered individually or in the
aggregate, is reasonably likely to have a Parent Material Adverse Effect.

        3.6     Disclosure in Proxy Statement. No information supplied by
Parent, Subsidiary or any Parent Subsidiary for inclusion in the Proxy
Statement/Prospectus shall, at the date the Proxy Statement/Prospectus (or any
amendment thereof or supplement thereto) is first mailed to shareholders and at
the time of the Shareholders' Meeting and at the Effective Time, be false or
misleading with respect to any material fact, or omit to state any material fact
required to be stated therein or necessary in order to make the statements made
therein, in the light of the circumstances under which they are made, not
misleading or necessary to correct any statement in any earlier communication
with respect to the solicitation of proxies at the Shareholders' Meeting which
has become false or misleading. No information supplied by Parent, Subsidiary or
any Parent Subsidiary for inclusion in the S-4 with respect to the issuance of
Parent Common Stock in the Merger will, at the time the S-4 becomes effective
under the '33 Act, contain any untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements made therein not misleading. The portions of the Proxy
Statement/Prospectus and S-4 supplied by Parent, Subsidiary or any Parent
Subsidiary (whether by inclusion or by incorporation by reference therein) will
comply as to form in all material respects with the requirements of the '33 Act
and the '34 Act and the rules and regulations of the SEC thereunder.
Notwithstanding the foregoing, none of Parent, Subsidiary or any Parent
Subsidiary make any representation or warranty with respect to any information
supplied by the Company which is contained in any of the foregoing documents.

        3.7     Broker's or Finder's Fees. Except for Lehman Brothers Inc.
("Lehman"), whose fees and expenses will be paid by Parent in accordance with
Parent's agreement with Lehman, no agent, broker, person or firm acting on
behalf of Parent or under its authority is or will be entitled to any advisory,
commission or broker's or finder's fee from any of the parties hereto in
connection wit
h any of the transactions contemplated herein.

        3.8     Parent Not An Interested Stockholder. As of the date hereof,
neither Parent nor any of its affiliates is, with respect to the Company, an
"interested stockholder" as such term is defined in Section 203 of the DGCL.

        3.9     Oil and Gas Reserves. Parent has furnished to the Company
Parent's estimate of Parent's and Parent Subsidiaries' oil and gas reserves as
of June 30, 2005, as audited by Ralph E. Davis Associates, Inc., with respect to
onshore reserves, and Mannon Associates, with respect to offshore reserves
(together, the "Parent Reserve Reports"). Except as would not, individually or
in the aggregate, reasonably be expected to have a Parent Material Adverse
Effect, to Parent's knowledge, the factual, non-interpretive data on which the
Parent Reserve Reports was based for purposes of estimating the oil and gas
reserves set forth in the Parent Reserve Reports was accurate in all material
respects.

        3.10    Certain Contracts and Arrangements. Except as would not,
individually or in the aggregate, reasonably be expected to have a Parent
Material Adverse Effect, neither Parent nor any Parent Subsidiary is in breach
or default under any indebtedness for borrowed money.

                                       28


                                    ARTICLE 4
                     CONDUCT OF BUSINESS PENDING THE MERGER

        4.1     Conduct of Business by the Company Pending the Merger. The
Company covenants and agrees that, prior to the Effective Time, unless Parent
shall otherwise agree in writing (which agreement shall not be unreasonably
withheld) or except in connection with the transactions contemplated by this
Agreement:

                (a)     Except as set forth in Section 4.1 of the Company
Disclosure Letter, the businesses of the Company and the Company Subsidiaries
shall be conducted only in the ordinary and usual course of business and
consistent with past practices, and the Company and the Company Subsidiaries
shall use all reasonable efforts to maintain and preserve intact their
respective business organizations, to maintain beneficial business relationships
and good will with suppliers, contractors, distributors, customers, licensors,
licensees and others having business relationships with it and keep available
the services of its current key officers and employees; and

                (b)     Without limiting the generality of the foregoing Section
4.1(a), except as set forth in Section 4.1 of the Company Disclosure Letter, the
Company shall not directly or indirectly, and shall not permit any of the
Company Subsidiaries to, do any of the following:

                        (i)     acquire, sell, encumber, lease, transfer or
        dispose of any assets, rights or securities that are material to the
        Company and the Company Subsidiaries or terminate, cancel, materially
        modify or enter into any material commitment, transaction, line of
        business or other agreement, in each case other than in the ordinary
        course of business consistent with past practice or acquire by merging
        or consolidating with or by purchasing a substantial equity interest in
        or a substantial portion of the assets of, or by any other manner, any
        business, corporation, partnership, association or other business
        organization or division thereof;

                        (ii)    amend or propose to amend its certificate of
        incorporation or bylaws or, in the case of the Company Subsidiaries,
        their respective constituent documents;

                        (iii)   split, combine or reclassify any outstanding
        shares of, or interests in, its capital stock;

                        (iv)    declare, set aside or pay any dividend or
        distribution, payable in cash, stock, property or otherwise, with
        respect to any of its capital stock;

                        (v)     redeem, purchase or otherwise acquire, or offer
        to redeem, purchase or otherwise acquire, any shares of its capital
        stock or any options, warrants or rights to acquire capital stock of the
        Company;

                        (vi)    issue, sell, pledge, dispose of or encumber, or
        authorize, propose or agree to the issuance, sale, pledge or disposition
        or encumbrance by the Company or any of the Company Subsidiaries of, any
        shares of, or any options, warrants or rights of any kind to acquire any
        shares of, or any securities convertible into or exchangeable for any

                                       29


        shares of, its capital stock of any class, or any other securities in
        respect of, in lieu of, or in substitution for any class of its capital
        stock outstanding on the date hereof, other than issuances of common
        stock upon exercise of any Company Stock Options outstanding on the date
        hereof;

                        (vii)   modify the terms of any existing indebtedness
        for borrowed money or incur any indebtedness for borrowed money or issue
        any debt securities;

                        (viii)  assume, guarantee, endorse or otherwise as an
        accommodation become responsible for, the obligations of any other
        person, or make any loans or advances;

                        (ix)    authorize, recommend or propose any change in
        its capitalization;

                        (x)     take any action with respect to the grant of or
        increase in any severance or termination pay involving a payment of more
        than $2,075,000 in the aggregate (when combined with any payments
        permitted by Section 4.1(b)(xi));

                        (xi)    adopt or establish any new employee benefit plan
        or amend in any material respect any employee benefit plan or, other
        than in the ordinary course of business consistent with past practice,
        increase the compensation or fringe benefits of any employee (except as
        required by any existing employee benefit plans or employment agreements
        or applicable Law) or pay any material benefit not required by any
        existing employee benefit plan involving a payment of more than
        $2,075,000 in the aggregate (when combined with any payments permitted
        by Section 4.1(b)(x));

                        (xii)   other than in the ordinary course of business
        consistent with past practice, enter into or amend in any material
        respect (other than as required by existing employee benefit plans or
        employment agreements or by applicable Law) any employment, consulting,
        severance or indemnification agreement entered into or made by the
        Company or any of the Company Subsidiaries with any of their respective
        directors, officers, agents, consultants or employees, or any collective
        bargaining agreement or other obligation to any labor organization or
        employee incurred or entered into by the Company or any of the Company
        Subsidiaries (other than as required by existing employee benefit plans
        or employment agreements or by applicable Law);

                        (xiii)  settle or compromise any liability for taxes,
        other than in the ordinary course of business;

                        (xiv)   make or commit to make capital expenditures in
        excess of $50,000, except for emergency action in the face of risk to
        life, property or the environment;

                        (xv)    make any material changes in tax accounting
        methods except as required by GAAP or applicable Law;

                        (xvi)   other than in the ordinary course of business,
        pay or discharge any claims, liens or liabilities involving more than
        $25,000 individually or $100,000 in the

                                       30


        aggregate, which are not reserved for on the balance sheet included in
        the Company Financial Statements;

                        (xvii)  write off any accounts or notes receivable in
        excess of $25,000 except in the ordinary course of business;

                        (xviii) knowingly take, or agree to commit to take, any
        action that would or is reasonably likely to result in any of the
        conditions to the Merger not being satisfied, or would make any
        representation or warranty of the Company contained herein inaccurate in
        any material respect at, or as of any time prior to, the Effective Time,
        or that would materially impair the ability of the Company, Parent,
        Subsidiary or the holders of shares of Company Common Stock to
        consummate the Merger in accordance with the terms hereof or materially
        delay such consummation; or

                        (xix)   take any action that would, or is reasonably
        likely to, prevent or impede the Merger from qualifying as a
        reorganization within the meaning of Section 368(a) of the Code; or

                        (xx)    enter into or modify any contract, agreement,
        commitment or arrangement to do any of the foregoing.

        4.2     Conduct of Business of Parent. Except as contemplated by this
Agreement, during the period from the date hereof to the Effective Time or
earlier termination of this Agreement, neither Parent nor any of its
subsidiaries (including Subsidiary), without the prior written consent of the
Company (which consent will not unreasonably be withheld), shall:

                (a)     adopt or propose to adopt any amendments to its
constituent documents, other than relating to the Reincorporation Merger, and
other than amendments which would not have a material adverse effect on the
consummation of the transactions contemplated by this Agreement;

                (b)     take any action that would or is reasonably likely to
prevent or impede the Merger and the Reincorporation Merger from each qualifying
as a reorganization described in Section 368(a) of the Code;

                (c)     with respect to Parent only, split, combine or
reclassify any shares of its capital stock, declare, set aside or pay any
dividend or other distribution (whether in cash, stock or property or any
combination thereof) in respect of its capital stock, make any other actual,
constructive or deemed distribution in respect of its capital stock or otherwise
make any payments to stockholders in their capacity as such;

                (d)     adopt a plan of complete or partial liquidation or
dissolution of Parent;

                (e)     knowingly take, or agree to commit to take, any action
that would or is reasonably likely to result in any of the conditions to the
Merger not being satisfied, or would make any representation or warranty of
Parent or Subsidiary contained herein inaccurate in a manner that would be
reasonably likely to have a Parent Material Adverse Effect at, or as of any time
prior to, the Effective Time, or that would materially impair the ability of the
Company,

                                       31


Parent, Subsidiary or the holders of shares of Parent Common Stock to consummate
the Merger in accordance with the terms hereof or materially delay such
consummation; or

                (f)     take or agree in writing or otherwise to take any of the
actions precluded by Sections 4.2(a) through 4.2(e).

                                    ARTICLE 5
                              ADDITIONAL AGREEMENTS

        5.1     Shareholders' Meeting.

                (a)     The Company, acting through its board of directors,
shall, in accordance with applicable Law and the Company's certificate of
incorporation and bylaws, (i) duly call, give notice of, convene and hold a
meeting of its shareholders as soon as practicable following the date hereof for
the purpose of considering and taking action on this Agreement and the
transactions contemplated hereby (the "Shareholders' Meeting") and (ii) subject
to its fiduciary duties under applicable Law after consultation with outside
counsel, (A) include in the Proxy Statement/Prospectus (as defined in Section
2.7) the unanimous recommendation of the directors entitled to vote that the
shareholders of the Company vote in favor of the approval and adoption of this
Agreement and the transactions contemplated hereby and (B) use its reasonable
best efforts to obtain the necessary approval and adoption of this Agreement and
the transactions contemplated hereby by its shareholders. Notwithstanding the
Company's failure to include the recommendation contemplated by clause (A) of
the preceding sentence (in the circumstances permitted thereby), unless this
Agreement shall have been terminated pursuant to Section 7.1, the Company shall
submit this Agreement to its stockholders at the Shareholders' Meeting for the
purpose of adopting this Agreement and nothing contained herein shall be deemed
to relieve the Company of such obligation.

                (b)     Parent Colorado, acting through its board of directors,
shall, in accordance with applicable Law and the Company's articles of
incorporation and bylaws, (i) duly call, give notice of, convene and hold a
meeting of its shareholders as soon as practicable following the date hereof for
the purpose of considering and taking action on the Reincorporation Merger and
the transactions contemplated thereby (the "Parent Colorado Shareholders'
Meeting") and (ii) subject to its fiduciary duties under applicable Law after
consultation with outside counsel, (A) include in its proxy statement the
unanimous recommendation of the board of directors that the shareholders of
Parent Colorado vote in favor of the approval and adoption of the
Reincorporation Merger and the transactions contemplated thereby and (B) use its
reasonable best efforts to obtain the necessary approval and adoption of the
Reincorporation Merger and the transactions contemplated hereby by its
shareholders. Notwithstanding the foregoing, it is expressly understood that the
Parent Colorado Stockholders Meeting and the approval of the Reincorporation
Merger are not conditions to the consummation of the Merger.

        5.2     Registration Statement.

                (a)     As soon as practicable following the date hereof, Parent
shall prepare and file with the SEC a registration statement on Form S-4 to
register under the Securities Act the Parent Common Stock to be issued pursuant
to the Merger (the "S-4"). The Proxy

                                       32


Statement/Prospectus will be included as a prospectus in and will constitute
part of the S-4 as Subsidiary's prospectus. Parent, the Company and Subsidiary
shall use their reasonable best efforts to have the S-4 declared effective under
the '33 Act as promptly as practicable after such filing. Parent, Subsidiary and
the Company will cooperate with each other in the preparation of the Proxy
Statement/Prospectus and the S-4; without limiting the generality of the
foregoing, Parent and Subsidiary, on the one hand, and the Company, on the other
hand, will furnish to each other the information relating to the party
furnishing such information required by the '34 Act to be set forth in the Proxy
Statement/Prospectus and the S-4, and Company and its counsel shall be given the
opportunity to review and comment on the Proxy Statement/Prospectus and the S-4
prior to the filing thereof with the SEC. Parent, Subsidiary and the Company
each agree to use its reasonable best efforts, after consultation with the other
parties hereto, to respond promptly to any comments made by the SEC with respect
to the Proxy Statement/Prospectus and the S-4. The Company will use its
reasonable best efforts to cause the Proxy Statement/Prospectus to be mailed to
its stockholders as promptly as practicable after the S-4 is declared effective
under the '33 Act. No representation, covenant or agreement is made by any party
hereto with respect to information supplied by any other party for inclusion in
the S-4.

                (b)     As soon as practicable after the date hereof, the
Company, Parent and Subsidiary shall promptly and properly prepare and file any
other schedules, stateme
nts, reports, or other documents required under the '34
Act (if any) or any other federal or state securities Laws relating to the
Merger and the transactions contemplated herein (the "Other Filings"). Each
party shall notify the others promptly of the receipt by such party of any
comments or requests for additional information from any governmental official
with respect to any Other Filing made by such party and will supply the others
with copies of all correspondence between such party and its representatives, on
the one hand, and the appropriate government official, on the other hand, with
respect to the Other Filings made by such party. Each of the Company, Parent and
Subsidiary shall use reasonable efforts to obtain and furnish the information
required to be included in the Proxy Statement/Prospectus and any Other Filing
and, after consultation with the other, to respond promptly to any comments made
by any governmental official with respect to any Other Filing.

        5.3     Employee Benefit Matters.

                (a)     The Company and the Company Subsidiaries shall: (i)
terminate all employees of the Company and the Company Subsidiaries prior to
Closing; (ii) terminate all Employee Benefit Plans prior to Closing; (iii) pay
all wages and other employee expenses that are accrued and payable as of
Closing; (iv) pay any other payments set forth on Section 2.9(j) of the Company
Disclosure Letter; and (v) pay the projected cost of COBRA, or the state
equivalent, for M&A Qualified Beneficiaries.

                (b)     Prior to Closing the Company shall amend, if necessary,
the Castle Energy Corporation 401(k) Profit Sharing Plan ("Company's 401(k)") to
comply with current law, if applicable, and, if applicable, make a submission to
the Internal Revenue Service under the Employee Plans Compliance Resolution
System, Voluntary Correction Program, for failure to amend the Company's 401(k)
in a timely manner. The Company shall promptly provide the Parent with a copy of
any submission to the Internal Revenue Service.

                                       33


                (c)     The Parent will assume liability under any Employee
Benefit Plan for claims under Section 4980B of the Code with respect to M&A
Qualified Beneficiaries, as defined under Section 54.4980B-9 of the Treasury
Regulations or with respect to any applicable state group health plan
continuation coverage statutes. Notwithstanding the forgoing, in the event that
Section 4980B of the Code or an applicable state group health plan continuation
coverage statute does not apply, the Parent agrees to provide continuation
coverage that would otherwise comply with the terms of Section 4980B of the Code
to any former employee of the Company and the Company Subsidiaries who meets the
M&A Qualified Beneficiary definition set forth above under the Parent's Employee
Benefit Plans.

        5.4     Consents and Approvals. The Company, Parent and Subsidiary shall
cooperate with each other and (a) promptly prepare and file all necessary
documentation, (b) effect all necessary applications, notices, petitions and
filings and execute all agreements and documents, (c) use all reasonable efforts
to obtain all necessary permits, consents, approvals and authorizations of all
governmental bodies and (d) use all reasonable efforts to obtain all necessary
permits, consents, approvals and authorizations of all other parties, in the
case of each of the foregoing clauses (a), (b), (c) and (d), necessary or
advisable to consummate the transactions contemplated by this Agreement or
required by the terms of any note, bond, mortgage, indenture, deed of trust,
license, franchise, permit, concession, contract, lease or other instrument to
which the Company, Subsidiary, Parent or any of their respective subsidiaries is
a party or by which any of them is bound; provided, however, that (i) no note,
bond, mortgage, indenture, deed of trust, license, franchise, permit,
concession, contract, lease or other instrument shall be amended or modified to
increase materially the amount payable thereunder or to be otherwise materially
more burdensome to the Company and the Company Subsidiaries considered as one
enterprise in order to obtain any permit, consent, approval or authorization
without first obtaining the written approval of Parent and (ii) without the
prior consent of Parent, no such actions or things shall be done to the extent
they would, individually or in the aggregate, reasonably be expected to have a
Subsidiary Material Adverse Effect (after giving effect to the Merger); and
provided, further, that in the event of any action by or inquiry (formal or
informal) of any governmental agency or third party related to or based upon
matters associated with the Company's representation in Section 2.25, Parent and
Subsidiary shall be entitled to take (or not take) any action they deem
necessary or advisable in their sole, unfettered discretion, including that set
forth in Section 7.1(d)(v); provided, however, that Parent shall not take any
affirmative action that would detrimentally affect the Company with respect to
such matter. A "Subsidiary Material Adverse Effect" means any change, effect,
fact, event, condition or development that would have or be reasonably likely to
have a material adverse effect on the condition (financial or otherwise),
business, operations or assets of Subsidiary and the direct and indirect
subsidiaries of Subsidiary considered as a single enterprise following the
Merger. The Company shall have the right to review and approve in advance all
characterizations of the information relating to the Company; Parent shall have
the right to review and approve in advance all characterizations of the
information relating to Parent or Subsidiary; and each of the Company and Parent
shall have the right to review and approve in advance all characterizations of
the information relating to the transactions contemplated by this Agreement, in
each case which appear in any filing (including, without limitation, the Proxy
Statement/Prospectus) made in connection with the transactions contemplated
hereby. The Company, Parent and Subsidiary agree that they will consult with
each other with respect to the obtaining of all such necessary permits,
consents, approvals and authorizations of all third parties and governmental
bodies.

                                       34


        5.5     Public Statements. The Company, Parent and Subsidiary shall
consult with each other prior to issuing any public announcement, statement or
other disclosure with respect to this Agreement or the transactions contemplated
herein and shall not issue any such public announcement or statement prior to
such consultation, except as may be required by Law or any listing agreement
with a national securities exchange or trading market and each party will use
commercially reasonable efforts to provide copies of such release or other
announcement to the other party hereto, and give due consideration to such
comments as such other party may have, prior to such press release or other
announcement.

        5.6     Reasonable Best Efforts. Subject to the terms and conditions
herein provided, each of the Company, Parent and Subsidiary agrees to use
reasonable best efforts to take, or cause to be taken, all action, and to do, or
cause to be done, all things reasonably necessary, proper or advisable under
applicable Laws to consummate and make effective the transactions contemplated
by this Agreement, including but not limited to obtaining all consents,
approvals and authorizations required for or in connection with the consummation
by the parties hereto of the transactions contemplated by this Agreement,
provided, however, that the parties shall not be required to contest any
legislative, administrative or judicial action or seek to have vacated, lifted,
reversed or overturned, any decree, judgment, injunction or other order (whether
temporary, preliminary or permanent) that restricts, prevents or prohibits the
consummation of the transactions contemplated by this Agreement or pay any
material amounts to obtain any consent, approval or authorization. In case at
any time after the Effective Time any further action is necessary or desirable
to carry out the purposes of this Agreement, Parent and/or the Surviving Company
shall cause the proper officers and directors of the Company, Parent and
Subsidiary to take all such action. In the event any litigation is commenced by
any person involving the Company, Parent or Subsidiary and relating to the
transactions contemplated by this Agreement, including any other Takeover
Proposal (as defined in Section 5.9(c)), the Company, Parent or Subsidiary shall
have the right, at its own expense, to participate therein.

        5.7     Notification of Certain Matters. Each of the Company, Parent and
Subsidiary agrees to give prompt notice to each other of, and to use their
respective reasonable best efforts to prevent or promptly remedy, (i) the
occurrence or failure to occur, or the impending or threatened occurrence or
failure to occur, of any event which occurrence or failure to occur would be
likely to cause any of its representations or warranties in this Agreement to be
untrue or inaccurate in any material respect at any time from the date hereof
through the Effective Time and (ii) any material failure on its part to comply
with or satisfy any covenant, condition or agreement to be complied with or
satisfied by it hereunder; provided, however, that the delivery of any notice
pursuant to this Section 5.7 shall not limit or otherwise affect the remedies
available hereunder to the party receiving such notice.

        5.8     Access to Information; Confidentiality.

                (a)     The Company shall, and shall cause the Company
Subsidiaries and the officers, directors, employees and agents of the Company
and the Company Subsidiaries to, afford the officers, employees and agents of
Parent and Subsidiary reasonable access at all reasonable times from the date
hereof through the Effective Time to its officers, employees, agents,
properties, facilities, books, records, contracts and other assets and shall
furnish Parent and Subsidiary all financial, operating and other data and
information as Parent and Subsidiary

                                       35


through their officers, employees or agents, may reasonably request. Parent and
Subsidiary shall have the right to make such due diligence investigations as
Parent and Subsidiary shall deem necessary or reasonable. No additional
investigations or disclosures shall affect the Company's representations and
warranties contained herein, or limit or otherwise affect the remedies available
to Parent pursuant to this Agreement.

                (b)     Parent and Subsidiary shall, and Parent shall cause
officers of Parent to, afford the officers and directors of the Company complete
access at all reasonable times from the date hereof through the Effective Time
to its and its subsidiaries' officers, properties, facilities, books, records
and contracts and shall furnish the Company all financial, operating and other
data and information as the Company through its officers, employees or agents,
may reasonably request. The Company shall have the right to make such reasonable
due diligence investigations as the Company shall deem necessary or reasonable.
No additional investigations or disclosures shall affect Parent's or
Subsidiary's representations and warranties contained herein, or limit or
otherwise affect the remedies available to the Company pursuant to this
Agreement.

                (c)     The provisions of the confidentiality agreements between
Parent and the Company (the "Confidentiality Agreements") shall remain in full
force and effect in accordance with their respective terms.

        5.9     No Solicitation.

                (a)     From the date hereof until termination of this
Agreement, the Company agrees that it shall not, nor shall it permit any of the
Company Subsidiaries to, nor shall it authorize or permit any officer, director
or employee of, or any investment banker, attorney or other advisor or
representative of, the Company or any of the Company Subsidiaries, directly or
indirectly, to (i) solicit, initiate, or encourage any inquiries relating to, or
the submission of, any Takeover Proposal (as hereinafter defined), (ii) approve
or recommend any Takeover Proposal, accept any Takeover Proposal or enter into
any letter of intent, agreement in principle or agreement with respect to any
Takeover Proposal (or resolve to or publicly propose to do any of the foregoing)
or (iii) participate in any discussions or negotiations regarding, or furnish to
any person any information with respect to, or take any other action to
facilitate any inquiries or the making of any proposal or offer that
constitutes, or may reasonably be expected to lead to, any Takeover Proposal;
provided, however, that (x) nothing contained in subclauses (ii) or (iii) above
shall prohibit the Company or its board of directors from taking and disclosing
to the Company's stockholders a position with respect to a tender offer by a
third party pursuant to Rules 14d-9 and 14e-2 promulgated under the '34 Act,
provided that the board of directors of the Company shall not recommend that the
stockholders of the Company tender their Company Common Stock in connection with
any such tender or exchange offer unless the board of directors shall have
determined in good faith, after consultation with its financial advisors and
outside counsel, that failing to take such action would reasonably be expected
to constitute a breach of the fiduciary duties of the board of directors and
that the relevant Takeover Proposal is a Superior Proposal (as defined below)
and (y) prior to the Shareholders' Meeting, if the Company receives an
unsolicited bona fide written Takeover Proposal from a third party that the
board of directors of the Company determines in good faith (after receiving the
advice of a financial adviser of nationally or regionally recognized reputation)
is reasonably likely to be a Superior Proposal, the Company and its
representatives may conduct such discussions or provide such information as

                                       36


the board of directors of the Company shall determine, but only if, prior to
such provision of information or conduct of such discussions, (A) such third
party shall have entered into a confidentiality agreement not materially less
favorable to the Company than the Confidentiality Agreement (and containing
additional provisions that expressly permit the Company to comply with the
provisions of this Section 5.9) and (B) the board of directors of the Company
determines in its good faith judgment, after consultation with outside counsel,
that it is required to do so in order to comply with its fiduciary duties. The
Company shall promptly notify Parent in the event it receives any Takeover
Proposal, including the identity of the party submitting such proposal.

                (b)     The Company shall promptly (but in no event later than
24 hours after receipt) notify Parent of the material terms, conditions and
other aspects of any inquiries, proposals or offers with respect to, or which
could reasonably be expected to lead to, a Takeover Proposal, and of any
modifications or revisions to the terms of any Takeover Proposal.

                (c)     For purposes of this Agreement, "Takeover Proposal"
means any proposal or offer (whether or not in writing and whether or not
delivered to the stockholders of the Company generally) for a merger or other
business combination, reorganization, share exchange, recapitalization,
liquidation, dissolution or similar transaction involving the Company or any of
the Company Subsidiaries or to acquire in any manner (including by tender or
exchange offer), directly or indirectly, a 50% or more equity interest in, any
voting securities of, or assets (including equity interests in other entities)
of the Company and the Company Subsidiaries having an aggregate value equal to
50% or more of the Company's consolidated net asset value, other than the
transactions contemplated by this Agreement. For purposes
 of this Agreement,
"Superior Proposal" means any unsolicited bona fide written Takeover Proposal
which (i) contemplates (A) a merger or other business combination,
reorganization, share exchange, recapitalization, liquidation, dissolution,
tender offer, exchange offer or similar transaction involving the Company as a
result of which the Company's stockholders prior to such transaction in the
aggregate cease to own at least 50% of the voting securities of the ultimate
parent entity resulting from such transaction or (B) a sale, lease, exchange,
transfer or other disposition (including, without limitation, a contribution to
a joint venture) of at least 50% of the value of the net assets of the Company
and the Company Subsidiaries, taken as a whole, and (ii) is on terms which the
board of directors of the Company determines (after consultation with its
financial advisor and outside counsel), taking into account, among other things,
all legal, financial, regulatory and other aspects of the proposal and the
person making the proposal, (A) would, if consummated, result in a transaction
that is more favorable to its stockholders from a financial point of view (in
their capacities as such) than the transactions contemplated by this Agreement
(including the terms of any proposal by Parent to modify the terms of the
transactions contemplated by this Agreement) and (B) is reasonably likely to be
financed and otherwise completed without undue delay.

                (d)     The Company agrees that it will, and will cause its
officers, employees, directors, agents and representatives to, immediately cease
any activities, discussions or negotiations existing as of the date of this
Agreement with any parties conducted heretofore with respect to any Takeover
Proposal and will use its reasonable best efforts to cause any such parties (and
its agents or advisors) in possession of confidential information regarding the
Company or any of the Company Subsidiaries that was furnished by or on behalf of
the Company to return or destroy all such information. The Company shall use its
reasonable best

                                       37


efforts to ensure that its officers, directors and key employees and its
investment bankers, attorneys and other representatives, are aware of the
provisions of this Section 5.9.

        5.10    Affiliates. Not less than 30 days prior to the Effective Time,
the Company shall deliver to Parent a letter identifying all persons who, in the
opinion of the Company, may be deemed at the time this Agreement is submitted
for approval by the shareholders of the Company, "affiliates" of the Company for
purposes of Rule 145 under the '33 Act, and such list shall be updated as
necessary to reflect any changes from the date thereof. The Company shall use
reasonable best efforts to cause each person identified on such list to deliver
to Parent, not less than 15 days prior to the Effective Time, a written
agreement in a form previously agreed to by the parties hereto.

        5.11    Section 16 Matters. Prior to the Effective Time of the Merger,
Parent, Subsidiary and the Company shall take all such steps as may be required
to cause any dispositions of capital stock of Parent and the Company (including
derivative securities thereof) or acquisitions of Parent Common Stock (including
derivative securities thereof) resulting from the transactions contemplated by
this Agreement by each individual who is subject to the reporting requirements
of Section 16(a) of the '34 Act with respect to Parent or the Company to be
exempt under Rule 16b-3 promulgated under the '34 Act.

        5.12    Voting Agreement. The Company and Parent acknowledge and agree
that Parent and certain key shareholders of the Company have entered, or will
enter, into the Voting Agreement. The Company agrees to use its reasonable best
efforts to cause certain key shareholders of the Company to enter into the
Voting Agreement as soon as practicable. In addition, the Company hereby agrees
to vote all shares of Parent Common Stock held by it in favor of the
Reincorporation Merger.

        5.13    Stock Exchange Listing. Parent shall use its reasonable best
efforts to cause the Parent Common Stock to be issued in the Merger and to be
issued upon the exercise of Company Stock Options to be approved for listing on
NASDAQ, prior to the Effective Time, subject to official notice of issuance.

        5.14    Tax Treatment. The parties will cooperate with each other and
use their respective reasonable best efforts to cause the Merger and
Reincorporation Merger to each qualify as a "reorganization" within the meaning
of Section 368(a) of the Code (the "Intended Tax Treatment"), including (a) not
taking any action that is reasonably likely to prevent the Intended Tax
Treatment and (b) reporting the transaction in a manner consistent with the
Intended Tax Treatment.

        5.15    Indemnification. Parent agrees that for a period of six years
following the Effective Time it shall cause the Subsidiary to maintain
provisions in its governing documents related to indemnification of directors
and officers that are substantially similar to those set forth in the Company's
Certificate of Incorporation and Bylaws as of the date hereof. Notwithstanding
any other provisions hereof, the obligations of Parent contained in this Section
5.15 shall be binding upon the successors and assigns of the Subsidiary. In the
event the Subsidiary or any of its successors or assigns (i) consolidates with
or mergers into any other Person or (ii) transfers all of substantially all of
its properties or assets to any Person, then, and in

                                       38


each case, proper provision shall be made so that successors and assigns of the
Subsidiary honor the obligations set forth in this Section 5.15.

                                    ARTICLE 6
                                   CONDITIONS

        6.1     Conditions to the Obligation of Each Party to Effect the Merger.
The obligations of each party to effect the Merger shall be subject to the
fulfillment at or prior to the Closing Date of the following conditions:

                (a)     this Agreement shall have been adopted by the requisite
vote of the stockholders of the Company, as required by DGCL and its certificate
of incorporation and bylaws;

                (b)     no preliminary or permanent injunction or other order,
decree or ruling issued by a court of competent jurisdiction or by a
governmental, regulatory or administrative agency or commission, nor any
statute, rule, regulation or executive order promulgated or enacted by any
governmental authority, shall be in effect that would make the Merger illegal or
otherwise prevent the consummation of the Merger provided, however, that prior
to invoking this condition, each party shall have complied fully with its
obligations under Section 5.6 and, in addition, shall use commercially
reasonable efforts to have any such decree, ruling, injunction or order vacated,
except as otherwise contemplated by this Agreement;

                (c)     The Parent Common Stock to be issued in the Merger and
to be issued upon exercise of any Company Stock Option shall have been approved
for listing on the NASDAQ, subject to official notice of issuance; and

                (d)     The S-4 shall have been declared effective by the SEC
under the '33 Act. No stop order suspending the effectiveness of the S-4 shall
have been issued by the SEC and no proceedings for that purpose shall have been
initiated or threatened by the SEC.

        6.2     Additional Conditions to the Obligation of Parent and
Subsidiary. The obligations of Parent and Subsidiary to effect the Merger shall
be subject to fulfillment at or prior to the Effective Time of the following
additional conditions:

                (a)     Each representation or warranty of the Company shall be
true and correct except for circumstances which, when considered individually or
in the aggregate, have not had or would not reasonably be expected to have a
Company Material Adverse Effect, in each case as if such representations and
warranties were made at the date of this Agreement and as of the Closing Date
(other than to the extent such representations and warranties are made as of a
specified date, in which case such representations and warranties shall be true
and correct as of such date and provided that any representation or warranty
that is qualified by materiality or Company Material Adverse Effect shall be
true and correct in all respects). There shall not have been a breach in any
respect by the Company of any covenant or agreement set forth in this Agreement
which breach shall not have been remedied within 20 days (or by the Outside Date
(as defined below), if sooner) of written notice specifying such breach in
reasonable detail and demanding that same be remedied (except where such failure
to be true and correct or such

                                       39


breach, taken together with all other such failures and breaches, would not have
a Company Material Adverse Effect);

                (b)     There shall not be any pending suit, action,
investigation or proceeding brought by any governmental authority before any
court (domestic or foreign) or any action taken, or any statute, rule,
regulation, decree, order or injunction promulgated, enacted, entered into or
enforced by any state, federal or foreign government or governmental agency or
authority or by any court (domestic or foreign) that would reasonably be
expected to have the effect of: (i) making illegal or otherwise restraining or
prohibiting the consummation of the Merger or materially delaying the Merger; or
(ii) prohibiting or materially limiting the ownership or operation by the
Company or any of its subsidiaries or Parent, Subsidiary or any of Parent's
affiliates of all or any material portion of the business or assets of the
Company and its subsidiaries, taken as a whole, or Parent and any of its
subsidiaries, taken as a whole, or compelling Parent, Subsidiary or any of
Parent's subsidiaries to dispose of or hold separate all or any material portion
of the business or assets of the Company and any of its subsidiaries, taken as a
whole, or Parent and its subsidiaries, taken as a whole, as a result of the
transactions contemplated herein;

                (c)     Parent shall have received a legal opinion dated the
Effective Time from Duane Morris LLP, counsel to the Company, or William
Liedtke, general counsel to the Company, in a form previously reviewed and
reasonably satisfactory to Parent.

                (d)     There shall not have occurred and continue to exist any
event that individually or in the aggregate would reasonably be expected to have
a Company Material Adverse Effect (other than matters set forth in the Company
Disclosure Letter).

                (e)     The Company shall have provided an executed certificate
of non-foreign status under Section 1445 of the Code.

                (f)     Parent Colorado shall have received the written opinion
of Davis Graham & Stubbs LLP, dated as of the Effective Time, which shall be
based on such written representations from Parent, the Company and others as
such counsel shall reasonably request, to the effect that the Merger and the
Reincorporation Merger will each constitute a reorganization within the meaning
of Section 368(a) of the Code.

        6.3     Additional Conditions to the Obligation of the Company. The
obligations of the Company to effect the Merger shall be subject to fulfillment
at or prior to the Effective Time of the following additional conditions:

                (a)     Each representation or warranty of Parent, Subsidiary
and Parent Subsidiaries shall be true and correct except for circumstances
which, when considered individually or in the aggregate, have not had or would
not reasonably be expected to have a Parent Material Adverse Effect, in each
case as if such representations and warranties were made at the date of this
Agreement and as of the Closing Date (other than to the extent such
representations and warranties are made as of a specified date, in which case
such representations and warranties shall be true and correct as of such date
and provided that any representation or warranty that is qualified by
materiality or Parent Material Adverse Effect shall

                                       40


be true and correct in all respects). There shall not have been a breach in any
respect by Parent and Subsidiary of any covenant or agreement set forth herein
which breach shall not have been remedied within 10 days (or by the Outside
Date, if sooner) of written notice specifying such breach in reasonable detail
and demanding that same be remedied (except where such failure to be true and
correct or such breach, taken together with all other such failures and
breaches, would not have a Parent Material Adverse Effect); or

                (b)     There shall not be any pending suit, action,
investigation or proceeding brought by any governmental authority before any
court (domestic or foreign) or any action taken, or any statute, rule,
regulation, decree, order or injunction promulgated, enacted, entered into or
enforced by any state, federal or foreign government or governmental agency or
authority or by any court (domestic or foreign) that would reasonably be
expected to have the effect of making illegal or otherwise restraining or
prohibiting the consummation of the Merger or materially delaying the Merger.

                (c)     The Company shall have received a legal opinion dated
the Effective Time from Davis Graham & Stubbs LLP or Krys Boyle, PC, as counsel
to Parent and Subsidiary, in a form previously reviewed and reasonably
satisfactory to the Company.

                (d)     The Company shall have received the written opinion of
Duane Morris LLP, dated as of the Effective Time, which shall be based on such
written representations from Parent, the Company and others as such counsel
shall reasonably request, to the effect that the Merger will constitute a
reorganization within the meaning of Section 368(a) of the Code.

                (e)     There shall not have occurred and continue to exist any
event that individually or in the aggregate would reasonably be expected to have
a Parent Material Adverse Effect.

                                    ARTICLE 7
                        TERMINATION, AMENDMENT AND WAIVER

        7.1     Termination. This Agreement may be terminated and the Merger may
be abandoned at any time prior to the Effective Time notwithstanding approval
thereof by the stockholders of the Company:

                (a)     by mutual written consent of Parent, Subsidiary and the
Company;

                (b)     by any of Parent, Subsidiary or the Company if the
consummation of the Merger shall not have occurred on or before April 1, 2006
(the "Outside Date"); provided, however, that the right to terminate this
Agreement under this Section 7.1(b) shall not be available to any party whose
failure to fulfill any obligation under this Agreement has been the cause of, or
resulted in, the failure of the Effective Time to occur on or before such date;
provided further that such time periods shall be tolled for any period during
which any party shall be subject to a nonfinal order, decree, ruling or action
restraining, enjoining or otherwise prohibiting the consummation of the Merger;

                (c)     by any of Parent, Subsidiary or the Company if a court
of competent jurisdiction or governmental, regulatory or administrative agency
or commission shall have

                                       41


issued an order, decree or ruling or taken any other action (which order, decree
or ruling each of the parties hereto shall use all reasonable efforts to lift),
in each case permanently restraining, enjoining or otherwise prohibiting the
transactions contemplated by this Agreement, and such order, decree, ruling or
other action shall have become final and nonappealable;

                (d)     by Parent if:

                        (i)     the Company Board (or any committee thereof)
        shall have withdrawn, modified or amended in any manner 
adverse to
        Parent its approval of or recommendation in favor of the Merger or shall
        have recommended or approved a Takeover Proposal or shall have resolved
        to do any of the foregoing;

                        (ii)    the Company shall have breached Section 5.9 in
        any material respect;

                        (iii)   the Company shall have exempted, for purposes of
        Section 203 of the DGCL, any acquisition of shares of Company Common
        Stock by any person or "group" (as defined in Section 13(d)(3) of the
        '34 Act), other than Parent, Subsidiary or their affiliates;

                        (iv)    prior to the Effective Time there shall be a
        breach of any representation, warranty, covenant or agreement of the
        Company in this Agreement such that the conditions set forth in Section
        6.2(a) are not capable of being satisfied on or before the Outside Date;
        provided that Parent or Subsidiary may not terminate this Agreement
        pursuant to this clause (iv) if Parent or Subsidiary is in material
        breach of this Agreement; or

                        (v)     prior to the Effective Time any governmental
        agency or third party shall have taken any action or commenced any
        inquiry related to or based upon matters associated with the Company's
        representation in Section 2.25, and such matter has not been resolved
        prior to the Outside Date to the Parent's satisfaction in its sole,
        unfettered discretion.

                (e)     by the Company if, prior to the Effective Time there
shall be a breach of any representation, warranty, covenant or agreement of
Parent or Subsidiary in this Agreement such that the conditions set forth in
Section 6.3(a) are not capable of being satisfied on or before the Outside Date;
provided that the Company may not terminate this Agreement pursuant to this
clause (e) if the Company is in material breach of this Agreement; or

                (f)     by Parent or the Company if the vote of the Company's
stockholders taken at a duly convened stockholders meeting shall not have been
sufficient to approve the Merger.

        7.2     Effect of Termination. Upon the termination of this Agreement
pursuant to Section 7.1, this Agreement shall forthwith become null and void
except as set forth in Section 7.3 (which shall be the sole remedy), which shall
survive such termination.

                                       42


        7.3     Fees and Expenses.

                (a)     If Parent or Subsidiary terminates this Agreement
pursuant to Section 7.1(d)(i), (ii) or (iii), then in each case the Company
shall pay, or cause to be paid, to Parent, as promptly as is reasonably
practicable (but in no event later than two business days) following the date of
termination an amount ("Termination Fee") equal to $5,000,000.00. In addition,
if (i)(x) this Agreement is terminated pursuant to Section 7.1(b) (by the
Company), or 7.1(f) (by Parent or the Company), (y) prior to such termination a
Takeover Proposal has been publicly announced, disclosed or communicated and (z)
on the date of such termination, Parent is not in material breach of this
Agreement and (ii) within 12 months after such termination the Company shall
consummate or enter into an agreement with the proponent of such Takeover
Proposal or an affiliate of such proponent, then the Company shall pay the
Termination Fee concurrently with the earlier of entering into any such
agreement or consummating such transaction.

                (b)     If the Company terminates this Agreement pursuant to
Section 7.1(e) following the intentional breach by Parent of its obligation to
consummate the Merger following the fulfillment of each of the conditions to its
obligations as set forth in Sections 6.1 and 6.2 above, then Parent shall pay,
or cause to be paid, to the Company, as promptly as is reasonably practicable
(but in no event later than two business days) after the date of termination,
the Termination Fee.

                (c)     If Parent terminates this Agreement pursuant to Section
7.1(d)(iv) following the intentional breach by the Company of its obligation to
consummate the Merger following the fulfillment of each of the conditions to its
obligations as set forth in Sections 6.1 and 6.3 above, then the Company shall
pay, or cause to be paid, to Parent, as promptly as is reasonably practicable
(but in no event later than two business days) after the date of termination,
the Termination Fee.

                (d)     All costs and expenses incurred in connection with this
Agreement and the transactions contemplated hereby shall be paid by the party
incurring such expenses, whether or not the Merger is consummated; provided,
that if this Agreement is terminated by Parent pursuant to Section 7.1(d)(iv) or
(v), the Company shall reimburse Parent for all reasonable out-of-pocket fees
and expenses incurred by Parent (including the fees and expenses of its counsel
and financial advisor) in connection with this Agreement and the transactions
contemplated hereby, up to a maximum of $1,000,000, and provided further that if
this Agreement is terminated by the Company pursuant to Section 7.1(e), Parent
shall reimburse the Company for all reasonable out-of-pocket fees and expenses
incurred by the Company (including the fees and expenses of its counsel and
financial advisor) in connection with this Agreement and the transactions
contemplated hereby, up to a maximum of $1,000,000, provided, however, that this
Section 7.3(d) shall not be applicable in the event a payment is made pursuant
to Section 7.3(b) or (c).

        7.4     Amendment. This Agreement may be amended by the parties hereto,
at any time before or after approval of this Agreement and the transactions
contemplated herein by the respective boards of directors or stockholders of the
parties hereto; provided, however, that after any such approval by the
stockholders, no amendment which under applicable Law may not be

                                       43


made without stockholder approval shall be made without such stockholder
approval. This Agreement may not be amended except by an instrument in writing
signed on behalf of each of the parties hereto.

        7.5     Waiver. Any failure of any of the parties to comply with any
obligation, covenant, agreement or condition herein may be waived at any time
prior to the Effective Time by any of the parties entitled to the benefit
thereof only by a written instrument signed by each such party granting such
waiver, but such waiver or failure to insist upon strict compliance with such
obligation, representation, warranty, covenant, agreement or condition shall not
operate as a waiver of or estoppel with respect to, any subsequent or other
failure.

                                    ARTICLE 8
                               GENERAL PROVISIONS

        8.1     Notices. All notices and other communications hereunder shall be
in writing and shall be deemed to have been duly given if delivered personally,
sent by recognized overnight courier or sent by telecopier to the parties at the
following addresses or at such other addresses as shall be specified by the
parties by like notice:

                (a)     if to the Company:

                        Castle Energy Corporation
                        357 South Gulph Road
                        Suite 260
                        King of Prussia, PA 19406
                        Attention: William C. Liedtke III
                        Fax:  610-992-9922

                        with a copy to:

                        Duane Morris LLP
                        380 Lexington Avenue
                        New York, NY  10168
                        Attention:  Michael H. Margulis, Esq.
                        Fax:  212-692-1020

                (b)     if to Parent or Subsidiary:

                        Delta Petroleum Corporation
                        475 Seventeenth Street
                        Suite 1400
                        Denver, CO 80202
                        Attention: Roger A. Parker
                        Fax: 303-298-8251

                                       44


                        with a copy to:

                        Davis Graham & Stubbs LLP
                        1550 Seventeenth Street, Suite 500
                        Denver, CO  80202
                        Attention:   Ronald R. Levine, II, Esq.
                        Fax:  (303) 893-1379

Notice so given shall (in the case of notice so given by mail) be deemed to be
given when received and (in the case of notice so given by cable, telegram,
telecopier, telex or personal delivery) on the date of actual transmission or
(as the case may be) personal delivery.

        8.2     Representations and Warranties. The representations and
warranties contained in this Agreement shall not survive the Merger.

        8.3     Governing Law; Waiver of Jury Trial.

                (a)     THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF DELAWARE REGARDLESS OF THE LAWS THAT
MIGHT OTHERWISE GOVERN UNDER APPLICABLE PRINCIPLES OF CONFLICTS OF LAWS THEREOF.

                (b)     NO PARTY TO THIS AGREEMENT OR ANY ASSIGNEE OR SUCCESSOR
OF A PARTY SHALL SEEK A JURY TRIAL IN ANY LAWSUIT, PROCEEDING, COUNTERCLAIM OR
ANY OTHER LITIGATION PROCEDURE BASED UPON OR ARISING OUT OF THIS AGREEMENT OR
ANY OF THE OTHER AGREEMENTS OR THE DEALINGS OR THE RELATIONSHIP BETWEEN THE
PARTIES. NO PARTY WILL SEEK TO CONSOLIDATE ANY SUCH ACTION, IN WHICH A JURY
TRIAL HAS BEEN WAIVED, WITH ANY OTHER ACTION IN WHICH A JURY TRIAL CANNOT OR HAS
NOT BEEN WAIVED. THE PROVISIONS OF THIS SECTION HAVE BEEN FULLY DISCUSSED BY THE
PARTIES HERETO, AND THESE PROVISIONS SHALL BE SUBJECT TO NO EXCEPTIONS. NEITHER
PARTY HAS IN ANY WAY AGREED WITH OR REPRESENTED TO THE OTHER PARTY THAT THE
PROVISIONS OF THIS SECTION WILL NOT BE FULLY ENFORCED IN ALL INSTANCES.

        8.4     Counterparts; Facsimile Transmission of Signatures. This
Agreement may be executed in any number of counterparts and by different parties
hereto in separate counterparts, and delivered by means of facsimile
transmission or otherwise, each of which when so executed and delivered shall be
deemed to be an original and all of which when taken together shall constitute
but one and the same agreement. If any party hereto elects to execute and
deliver a counterpart signature page by means of facsimile transmission, it
shall deliver an original of such counterpart to each of the other parties
hereto within ten days of the date hereof, but in no event will the failure to
do so affect in any way the validity of the facsimile signature or its delivery.

        8.5     Assignment; No Third Party Beneficiaries.

                (a)     This Agreement and all of the provisions hereto shall be
binding upon and inure to the benefit of, and be enforceable by, the parties
hereto and their respective successors

                                       45


and permitted assigns, but neither this Agreement nor any of the rights,
interests or obligations set forth herein shall be assigned by any party hereto
without the prior written consent of the other parties hereto and any purported
assignment without such consent shall be void.

                (b)     Nothing in this Agreement shall be construed as giving
any person, other than the parties hereto and their heirs, successors, legal
representatives and permitted assigns, any right, remedy or claim under or in
respect of this Agreement or any provision hereof except as provided in Section
5.15.

        8.6     Severability. If any provision of this Agreement shall be held
to be illegal, invalid or unenforceable under any applicable Law, then such
contravention or invalidity shall not invalidate the entire Agreement. Such
provision shall be deemed to be modified to the extent necessary to render it
legal, valid and enforceable, and if no such modification shall render it legal,
valid and enforceable, then this Agreement shall be construed as if not
containing the provision held to be invalid, and the rights and obligations of
the parties shall be construed and enforced accordingly.

        8.7     Entire Agreement. This Agreement and the Confidentiality
Agreements contain all of the terms of the understandings of the parties hereto
with respect to the subject matter hereof.

               [The remainder of this page is intentionally blank]

                                       46


        IN WITNESS WHEREOF, the Company, Parent Colorado, Parent Delaware and
Subsidiary have caused this Agreement to be executed as of the date first
written above.

                                                 DELTA PETROLEUM CORPORATION

                                                 By:    /s/ ROGER A. PARKER
                                                        ------------------------
                                                 Name:  Roger A. Parker
                                                 Title: President/CEO


                                                 DELTA PETROLEUM CORPORATION

                                                 By:    /s/ ROGER A. PARKER
                                                        ------------------------
                                                 Name:  Roger A. Parker
                                                 Title: President/CEO


                                                 DPCA LLC
                                                 By Delta Petroleum Corporation,
                                                 its Sole Member

                                                 By:    /s/ ROGER A. PARKER
                                                        ------------------------
                                                 Name:  Roger A. Parker
                                                 Title: President/CEO


                                                 CASTLE ENERGY CORPORATION

                                                 By:    /s/ RICHARD E. STAEDTLER
                                                        ------------------------
                                                 Name:  Richard E. Staedtler
                                                 Title: Chief Executive Officer

                  [AGREEMENT AND PLAN OF MERGER SIGNATURE PAGE]