Document:

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                                                                     Exhibit 4.8

                      ADVANCIS PHARMACEUTICAL CORPORATION
                          EMPLOYEE STOCK PURCHASE PLAN

         The Plan provides eligible employees of ADVANCIS PHARMACEUTICAL
CORPORATION, a Delaware corporation (the "CORPORATION"), and certain of its
subsidiaries with opportunities to purchase shares of the Corporation's Common
Stock, $0.01 par value per share (the "COMMON STOCK"). The Plan is intended to
benefit the Corporation by increasing the employees' interest in the
Corporation's growth and success and encouraging employees to remain in the
employ of the Corporation or its participating subsidiaries. The Plan is
intended to constitute an "employee stock purchase plan" within the meaning of
section 423 of the Internal Revenue Code of 1986, as amended (the "CODE"), and
shall be so applied and interpreted.

         1. Shares Subject to the Plan. Subject to adjustment as provided
herein, the aggregate number of shares of Common Stock that may be made
available for purchase under the Plan is 100,000 shares. The shares purchased
under the Plan may, in the discretion of the Board of Directors of the
Corporation (the "BOARD"), be authorized but unissued shares of Common Stock,
shares purchased on the open market, or shares from any other proper source.

         2. Administration. The Plan will be administered by the Board or by a
committee appointed by the Board (the "ADMINISTRATOR"). The Administrator has
authority to interpret the Plan, to make, amend and rescind all rules and
regulations for the administration and operation of the Plan, and to make all
other determinations necessary or desirable in administering and operating the
Plan, all of which will be final and conclusive. No member of the Administrator
shall be liable for any action or determination made in good faith with respect
to the Plan.

         3. Eligibility. All employees of the Corporation, including directors
who are employees, and all employees of any subsidiary of the Corporation (as
defined in Code section 424(f)), now or hereafter existing, that is designated
by the Administrator from time to time as a participating employer under the
Plan (a "DESIGNATED SUBSIDIARY"), are eligible to participate in the Plan,
subject to such further eligibility requirements as may be specified by the
Administrator consistent with Code section 423.

         4. Options to Purchase Common Stock.

         (a) Options ("OPTIONS") will be granted pursuant to the Plan to each
eligible employee on the first day on which The NASDAQ National Market is open
for trading ("TRADING DAY") on or after January 1 of each year commencing on or
after the Effective Date (as defined in Section 18), or such other date or dates
specified by the Administrator. Each Option will terminate on the last Trading
Day of a period specified by the Administrator (each such period referred to
herein as an "OPTION PERIOD"). No Option Period shall be longer than 27 months
in duration. Unless the Administrator determines otherwise, subsequent Option
Periods of equal duration will follow consecutively thereafter, each commencing
on the first Trading Day immediately after the expiration of the preceding
Option Period, and the Administrator may establish concurrent Option Periods
that overlap in time in whole or in part.

         (b) An individual must be employed as an eligible employee by the
Corporation or a Designated Subsidiary on the first Trading Day of an Option
Period in order to be granted an Option for that Option Period. However, the
Administrator may designate any subsequent Trading Day(s) (each such designated
Trading Day referred to herein as an "INTERIM TRADING DAY") in an Option Period
upon

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which Options will be granted to eligible employees who first commence
employment with, or first become eligible employees of, the Corporation or a
Designated Subsidiary after the first Trading Day of the Option Period. In such
event, the Interim Trading Day shall constitute the first Trading Day of the
Option Period for all Options granted on such day for all purposes under the
Plan.

         (c) Each Option represents a right to purchase on the last Trading Day
of the Option Period or on one or more Trading Days within the Option Period
designated by the Administrator (each such designated Trading Day and the last
Trading Day of the Option Period, a "PURCHASE DATE"), at the Purchase Price
hereinafter provided for, shares of Common Stock up to such maximum number of
shares specified by the Administrator on or before the first day of the Option
Period. All eligible employees granted Options under the Plan for an Option
Period shall have the same rights and privileges with respect to such Options.
The purchase price of each share of Common Stock (the "PURCHASE PRICE") subject
to an Option will be determined by the Administrator, in its discretion, on or
before the beginning of the Option Period; provided, however, that the Purchase
Price for an Option with respect to any Option Period shall never be less than
the lesser of 85 percent of the Fair Market Value of the Common Stock on (i) the
first Trading Day of the Option Period or (ii) the Purchase Date, and shall
never be less than the par value of the Common Stock.

         (d) For purposes of the Plan, "FAIR MARKET VALUE" on a Trading Day
means the average of the high and low sale prices per share of Common Stock as
reflected on the principal consolidated transaction reporting system for
securities listed on any national securities exchange or other market quotation
system on which the Common Stock may be principally listed or quoted or, if
there are no transactions on a Trading Day, then such average for the preceding
Trading Day upon which transactions occurred. However, for the Trading Day that
occurs on the date of the initial public offering of the Common Stock, "Fair
Market Value" shall mean the initial offering price of the Common Stock to the
public as indicated in the Corporation's final prospectus in connection with
such offering and as such price is negotiated between the Corporation and the
managing underwriters.

         (e) Notwithstanding any provision in this Plan to the contrary, no
employee shall be granted an Option under this Plan if such employee,
immediately after the Option would otherwise be granted, would own 5% or more of
the total combined voting power or value of the stock of the Corporation or any
subsidiary. For purposes of the preceding sentence, the attribution rules of
Code section 424(d) will apply in determining the stock ownership of an
employee, and all stock which the employee has a contractual right to purchase
will be treated as stock owned by the employee.

         (f) Notwithstanding any provision in this Plan to the contrary, no
employee may be granted an Option which permits his rights to purchase Common
Stock under this Plan and all other stock purchase plans of the Corporation and
its subsidiaries to accrue at a rate which exceeds $25,000 of the fair market
value of such Common Stock (determined at the time such Option is granted) for
each calendar year in which the Option is outstanding at any time, as required
by Code section 423.

         5. Payroll Deductions and Cash Contributions.

         To facilitate payment of the Purchase Price of Options, the
Administrator, in its discretion, may permit eligible employees to authorize
payroll deductions to be made on each payday during the Option Period, and/or to
contribute cash or cash-equivalents to the Corporation, up to a maximum amount
determined by the Administrator. The Corporation will maintain bookkeeping
accounts for all employees who authorize payroll deduction or make cash
contributions. Interest will not be paid on any employee accounts, unless the
Administrator determines otherwise. The Administrator shall establish rules and

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procedures, in its discretion, from time to time regarding elections to
authorize payroll deductions, changes in such elections, timing and manner of
cash contributions, and withdrawals from employee accounts. Amounts credited to
employee accounts on the Purchase Date will be applied to the payment of the
Purchase Price of outstanding Options pursuant to Section 6 below.

         6. Exercise of Options; Purchase of Common Stock. Options shall be
exercised at the close of business on the Purchase Date. In accordance with
rules established by the Administrator, the Purchase Price of Common Stock
subject to an option shall be paid (i) from funds credited to an eligible
employee's account, (ii) by a broker-assisted cashless exercise in accordance
with Regulation T of the Board of Governors of the Federal Reserve System, or
(iii) by such other method as the Administrator shall determine from time to
time. Options shall be exercised only to the extent the purchase price is paid
with respect to whole shares of Common Stock, unless the Administrator otherwise
provides. Any balance remaining in an employee's account on a Purchase Date
after such purchase of Common Stock will be carried forward automatically into
the employee's account for the next Purchase Date or Option Period, as
applicable, unless the employee is not an eligible employee with respect to the
next Purchase Date or Option Period, as applicable, in which case such amount
will be promptly refunded.

         7. Issuance of Certificates. As soon as practicable following each
Purchase Date, certificates representing shares of Common Stock purchased under
the Plan will be issued only in the name of the employee, in the name of the
employee and another person of legal age as joint tenants with rights of
survivorship, or (in the Administrator's sole discretion) in the street name of
a brokerage firm, bank or other nominee holder designated by the employee or the
Administrator. Any such certificates may contain a legend identifying the shares
as having been purchased pursuant to a plan qualified under Code section 423. In
the alternative, the Administrator may provide for uncertificated, book entry
issuance of the shares of Common Stock purchased under the Plan.

         8. Rights on Retirement, Death, Termination of Employment, or
Termination of Status as Eligible Employee. In the event of an employee's
termination of employment or termination of status as an eligible employee prior
to a Purchase Date (whether as a result of the employee's voluntary or
involuntary termination, retirement, death or otherwise), any outstanding Option
granted to him will immediately terminate, no further payroll deduction will be
taken from any pay due and owing to the employee and the balance in the
employee's account will be paid to the employee or, in the event of the
employee's death, (a) to the executor or administrator of the employee's estate
or (b) if no such executor or administrator has been appointed to the knowledge
of the Administrator, to such other person(s) as the Administrator may, in its
discretion, designate. If, prior to a Purchase Date, the Designated Subsidiary
by which an employee is employed will cease to be a subsidiary of the
Corporation, or if the employee is transferred to a subsidiary of the
Corporation that is not a Designated Subsidiary, the employee will be deemed to
have terminated employment for the purposes of this Plan.

         9. Optionees Not Stockholders. Neither the granting of an Option to an
employee nor the deductions from his pay will constitute such employee a
stockholder of the shares of Common Stock covered by an Option under this Plan
until such shares have been purchased by and issued to him.

         10. Options Not Transferable. Options under this Plan are not
transferable by a participating employee other than by will or the laws of
descent and distribution, and are exercisable during the employee's lifetime
only by the employee.

         11. Withholding of Taxes. To the extent that a participating employee
realizes ordinary income or wages in connection with the purchase, sale or other
transfer of any shares of Common Stock

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purchased under the Plan or the crediting of interest to the employee's account,
the Corporation may withhold amounts needed to cover applicable tax withholding
obligations from any payments otherwise due and owing to the participating
employee or from shares that would otherwise be issued to the participating
employee hereunder. Any participating employee who sells or otherwise transfers
shares purchased under the Plan must, within 30 days of such sale or transfer,
notify the Corporation in writing of the sale or transfer.

         12. Application of Funds. All funds received or held by the Corporation
under the Plan may be used for any corporate purpose until applied to the
purchase of Common Stock and/or refunded to participating employees and can be
commingled with other general corporate funds. Participating employees' accounts
will not be segregated.

         13. Effect of Changes in Capitalization.

         (a) Changes in Stock. If the number of outstanding shares of Common
Stock is increased or decreased or the shares of Common Stock are changed into
or exchanged for a different number or kind of shares or other securities of the
Corporation by reason of any recapitalization, reclassification, stock split,
reverse split, combination of shares, exchange of shares, stock dividend, or
other distribution payable in capital stock, or other increase or decrease in
such shares effected without receipt of consideration by the Corporation
occurring after the effective date of the Plan, the number and kind of shares
that may be purchased under the Plan shall be adjusted proportionately and
accordingly by the Corporation. In addition, the number and kind of shares for
which Options are outstanding shall be similarly adjusted so that the
proportionate interest, if any, of a participating employee immediately
following such event shall, to the extent practicable, be the same as
immediately prior to such event. Any such adjustment in outstanding Options
shall not change the aggregate Purchase Price payable by a participating
employee with respect to shares subject to such Options, but shall include a
corresponding proportionate adjustment in the Purchase Price per share.

         (b) Reorganization in Which the Corporation Is the Surviving
Corporation. Subject to Subsection (c) of this Section 13, if the Corporation
shall be the surviving corporation in any reorganization, merger or
consolidation of the Corporation with one or more other corporations, all
outstanding Options under the Plan shall pertain to and apply to the securities
to which a holder of the number of shares of Common Stock subject to such
Options would have been entitled immediately following such reorganization,
merger or consolidation, with a corresponding proportionate adjustment of the
Purchase Price per share so that the aggregate Purchase Price thereafter shall
be the same as the aggregate Purchase Price of the shares subject to such
Options immediately prior to such reorganization, merger or consolidation.

         (c) Reorganization in Which the Corporation Is Not the Surviving
Corporation or Sale of Assets or Stock. Upon any dissolution or liquidation of
the Corporation, or upon a merger, consolidation or reorganization of the
Corporation with one or more other corporations in which the Corporation is not
the surviving corporation, or upon a sale of all or substantially all of the
assets of the Corporation to another corporation, or upon any transaction
(including, without limitation, a merger or reorganization in which the
Corporation is the surviving corporation) approved by the Board that results in
any person or entity (other than any trust, charitable organization, foundation,
family partnership or other entity controlled directly or indirectly by, or
established for the benefit of any of the current or former executive officers
of the Company or their immediate family members (including spouses, children,
grandchildren, parents, and siblings, in each case to include adoptive
relations), any such immediate family members) owning more than 50 percent of
the combined voting power of all classes of stock of the Corporation, the

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Plan and all Options outstanding hereunder shall terminate, except to the extent
provision is made in writing in connection with such transaction for the
continuation of the Plan and/or the assumption of the Options theretofore
granted, or for the substitution for such Options of new Options covering the
stock of a successor corporation, or a parent or subsidiary thereof, with
appropriate adjustments as to the number and kinds of shares and exercise
prices, in which event the Plan and Options theretofore granted shall continue
in the manner and under the terms so provided. In the event of any such
termination of the Plan, the Option Period shall be deemed to have ended on the
last Trading Day prior to such termination, and, unless the Administrator
determines otherwise in its discretion, each participating employee shall have
the ability to choose either to (i) have all monies then credited to such
employee's account (including interest, to the extent any has accrued) returned
to such participating employee or (ii) exercise his Options in accordance with
Section 6 on such last Trading Day; provided, however, that if a participating
employee does not exercise his right of choice, his Options shall be deemed to
have been automatically exercised in accordance with Section 6 on such last
Trading Day. The Administrator shall send written notice of an event that will
result in such a termination to all participating employees not later than the
time at which the Corporation gives notice thereof to its stockholders.

         (d) Adjustments. Adjustments under this Section 13 related to stock or
securities of the Corporation shall be made by the Committee, whose
determination in that respect shall be final, binding, and conclusive.

         (e) No Limitations on Corporation. The grant of an Option pursuant to
the Plan shall not affect or limit in any way the right or power of the
Corporation to make adjustments, reclassifications, reorganizations or changes
of its capital or business structure or to merge, consolidate, dissolve or
liquidate, or to sell or transfer all or any part of its business or assets.

         14. Amendment of the Plan. The Board or the Administrator may at any
time, and from time to time, amend this Plan in any respect, except that (a) if
the approval of any such amendment by the stockholders of the Corporation is
required by Code section 423, such amendment will not be effected without such
approval, and (b) in no event may any amendment be made which would cause the
Plan to fail to comply with Code section 423 unless expressly so provided by the
Board.

         15. Insufficient Shares. In the event that the total number of shares
of Common Stock specified in elections to be purchased under any Option plus the
number of shares purchased under all Options previously granted under this Plan
exceeds the maximum number of shares issuable under this Plan, the Administrator
will allot the shares then available on a pro rata basis. Any funds then
remaining in a participating employee's account after purchase of the employee's
pro-rata number of shares will be refunded.

         16. Termination of the Plan. This Plan may be terminated at any time by
the Board. Except as otherwise provided in Section 13(c) hereof, upon
termination of this Plan all outstanding Options shall immediately terminate and
amounts in the employees' accounts will be promptly refunded.

         17.      Governmental Regulations.

         (a) The Corporation's obligation to sell and deliver Common Stock under
this Plan is subject to listing on a national stock exchange or quotation on The
NASDAQ National Market and the approval of all governmental authorities required
in connection with the authorization, issuance or sale of such stock.

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         (b) The Plan will be governed by the laws of the State of Delaware,
without regard to the conflict of laws principles thereof, except to the extent
that such law is preempted by federal law.

         18. Effective Date. The Plan is effective as of the date on which it
was approved by the Board of Directors of the Corporation (the "EFFECTIVE
DATE"), subject to the approval of the stockholders of the Corporation within 12
months of the effective date.

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                                                                  EXECUTION COPY

                        TERMINATION AND VOTING AGREEMENT

         This Termination and Voting Agreement, dated as of October 1, 2003
(this "Agreement"), is entered into by and among Westport Resources Corporation,
a Nevada corporation ("Westport" or the "Company"), Westport Energy LLC, a
Delaware limited liability company ("WELLC"), ERI Investments, Inc., a Delaware
corporation ("ERI"), Medicor Foundation, a Liechtenstein foundation, formed
pursuant to the Liechtenstein Persons and Companies Act ("Medicor," and together
with WELLC, the "Medicor Group"), the persons and entities named on Exhibit A
attached hereto (each such person or entity, a "Belfer Person," and
collectively, the "Belfer Group") and, solely with respect to Article I, Article
II and Article IV hereof, the persons and entities named on Exhibit B attached
hereto (each such person or entity, a "Terminating Belfer Person," and
collectively, the "Terminating Belfer Persons"). The Medicor Group, ERI and the
Belfer Group may be referred to herein individually as a "Shareholder Party" and
collectively as the "Shareholder Parties." Each member of the Medicor Group may
be referred to herein as a "Medicor Person."

                             PRELIMINARY STATEMENTS

         WHEREAS, the Company, the Shareholder Parties and the Terminating
Belfer Persons (collectively, the "Shareholders Agreement Parties") are parties
to that certain Third Amended and Restated Shareholders Agreement, dated as of
February 14, 2003, attached as Exhibit C hereto (the "Shareholders Agreement");

         WHEREAS, the Shareholders Agreement Parties desire to terminate the
Shareholders Agreement in its entirety; and

         WHEREAS, in connection with the termination of the Shareholders
Agreement, the Company and the Shareholder Parties desire to enter into (i)
certain voting agreements set forth herein relating to the Company's 2004 Annual
Meeting of Shareholders (the "2004 Annual Meeting") and (ii) a registration
rights agreement providing for, among other things, registration rights for the
benefit of the Shareholder Parties (the "Registration Rights Agreement"), in
each case to be effective upon termination of the Shareholders Agreement.

         NOW, THEREFORE, in consideration of the foregoing, and of the
representations, warranties, covenants and agreements contained herein, and for
other good and valuable consideration, the receipt and sufficiency of which is
hereby acknowledged, the parties hereto, intending to be legally bound, hereby
agree as follows:

                             STATEMENT OF AGREEMENT

                                    ARTICLE I
                         REPRESENTATIONS AND WARRANTIES

         Section 1.1 Representations and Warranties of the Company. The Company
hereby represents and warrants to each other party hereto as follows:

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                  (a)      Power and Authority. The Company has all requisite
corporate power and authority to execute, deliver and perform this Agreement.
The execution, delivery and performance by the Company of this Agreement have
been duly authorized by all necessary corporate action on the part of the
Company.

                  (b)      Execution, Delivery, Enforceability. This Agreement
has been duly executed and delivered by the Company and constitutes a valid and
binding obligation of the Company, enforceable against the Company in accordance
with its terms. No consent, approval, order or authorization of, or
registration, declaration or filing with, any court, administrative agency or
commission or other governmental authority or instrumentality, domestic or
foreign, is required by, or with respect to, the Company in connection with its
execution, delivery and performance of this Agreement.

                  (c)      No Prohibition. The Company's execution, delivery and
performance of this Agreement does not conflict with, or result in a breach of,
any law or regulation of any governmental authority applicable to the Company or
any material agreement to which the Company is a party.

                  (d)      No Assignment. The Company has not assigned any of
its rights or obligations under the Shareholders Agreement.

         Section 1.2 Representations and Warranties of the Medicor Group. Each
Medicor Person hereby severally and not jointly represents and warrants to each
other party hereto as follows:

                  (a)      Power and Authority. Each Medicor Person has all
requisite corporate or other power and authority to execute, deliver and perform
this Agreement. The execution, delivery and performance of this Agreement by
each Medicor Person have been duly authorized by all necessary corporate or
other action on the part of such Medicor Person.

                  (b)      Execution; Delivery; Enforceability. This Agreement
has been duly executed and delivered by each Medicor Person and constitutes a
valid and binding obligation of such Medicor Person, enforceable against such
Medicor Person in accordance with its terms. No consent, approval, order or
authorization of, or registration, declaration or filing (other than the filing
of an appropriate amendment to Schedule 13D in connection with the transactions
contemplated by this Agreement) with, any court, administrative agency or
commission or other governmental authority or instrumentality, domestic or
foreign, is required by, or with respect to, such Medicor Person in connection
with its execution, delivery and performance of this Agreement.

                  (c)      No Prohibition. Each Medicor Person's execution,
delivery and performance of this Agreement do not conflict with, or result in a
breach of, any law or regulation of any governmental authority applicable to
such Medicor Person or any material agreement to which such Medicor Person is a
party.

                  (d)      No Assignment. No Medicor Person has assigned any of
its rights or

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obligations under the Shareholders Agreement.

         Section 1.3 Representations and Warranties of ERI. ERI hereby
represents and warrants to each other party hereto as follows:

                  (a)      Authority. ERI has all requisite corporate authority
to execute, deliver and perform this Agreement. The execution, delivery and
performance of this Agreement by ERI have been duly authorized by all necessary
corporate action on the part of ERI.

                  (b)      Execution, Delivery, Enforceability. This Agreement
has been duly executed and delivered by ERI and constitutes a valid and binding
obligation of ERI, enforceable against ERI in accordance with its terms. No
consent, approval, order or authorization of, or registration, declaration or
filing (other than the filing of an appropriate amendment to Schedule 13D in
connection with the transactions contemplated by this Agreement) with, any
court, administrative agency or commission or other governmental authority or
instrumentality, domestic or foreign, is required by, or with respect to, ERI in
connection with ERI's execution, delivery and performance of this Agreement.

                  (c)      No Prohibition. ERI's execution, delivery and
performance of this Agreement do not conflict with, or result in a breach of,
any law or regulation of any governmental authority applicable to ERI or any
material agreement to which ERI is a party.

                  (d)      No Assignment. ERI has not assigned any of its rights
or obligations under the Shareholders Agreement.

         Section 1.4 Representations and Warranties of the Belfer Group and the
Terminating Belfer Persons. Each Belfer Person and each Terminating Belfer
Person hereby severally and not jointly represents and warrants to each other
party hereto as follows:

                  (a)      Power and Authority. Each Belfer Person and each
Terminating Belfer Person has all requisite corporate or other power and
authority to execute, deliver and perform this Agreement. The execution,
delivery and performance of this Agreement by each Belfer Person and each
Terminating Belfer Person have been duly authorized by all necessary corporate
or other action on the part of such Belfer Person and each Terminating Belfer
Person.

                  (b)      Execution; Delivery; Enforceability. This Agreement
has been duly executed and delivered by each Belfer Person and each Terminating
Belfer Person and constitutes a valid and binding obligation of such Belfer
Person and such Terminating Belfer Person enforceable against such Belfer Person
and such Terminating Belfer Person in accordance with its terms. No consent,
approval, order or authorization of, or registration, declaration or filing
(other than the filing of an appropriate amendment to Schedule 13D in connection
with the transactions contemplated by this Agreement) with, any court,
administrative agency or commission or other governmental authority or
instrumentality, domestic or foreign, is required by, or with respect to, such
Belfer Person or such Terminating Belfer Person in connection with its
execution, delivery and performance of this Agreement.

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                  (c)      No Prohibition. Each Belfer Person's and each
Terminating Belfer Person's execution, delivery and performance of this
Agreement do not conflict with, or result in a breach of, any law or regulation
of any governmental authority applicable to such Belfer Person or such
Terminating Belfer Person or any material agreement to which such Belfer Person
or such Terminating Belfer Person is a party.

                  (d)      No Assignment. No Belfer Person nor any Terminating
Belfer Person has assigned any of its rights or obligations under the
Shareholders Agreement.

                                   ARTICLE II
                      TERMINATION OF SHAREHOLDERS AGREEMENT

         Section 2.1 Termination of the Shareholders Agreement. Effective as of
the date hereof, the Shareholders Agreement is hereby terminated in its entirety
and shall be of no further force or effect; except for actions to be taken in
connection with the registration and offering of shares pursuant to the ERI
letter to the Company dated as of September 11, 2003.

                                   ARTICLE III
                               VOTING ARRANGEMENTS

         Section 3.1 Voting of Shares.

                  (a)      The Medicor Group and their Permitted Transferees
under the Registration Rights Agreement (collectively, the "Medicor Parties")
shall vote all shares of Common Stock owned or controlled by them, and shall
take all other necessary or desirable actions within their control (including,
without limitation, attendance at meetings in person or by proxy for purposes of
obtaining a quorum and execution of written consents in lieu of meetings), to
effectuate the provisions of this Article III.

                  (b)      ERI and its Permitted Transferees under the
Registration Rights Agreement (collectively, the "ERI Parties") shall vote all
shares of Common Stock owned or controlled by them, and shall take all other
necessary or desirable action within their control (including, without
limitation, attendance at meetings in person or by proxy for purposes of
obtaining a quorum and execution of written consents in lieu of meetings), to
effectuate the provisions of this Article III.

                  (c)      The Belfer Group and their Permitted Transferees
under the Registration Rights Agreement (collectively, the "Belfer Parties")
shall vote all shares of Common Stock owned or controlled by them, and shall
take all other necessary or desirable action within their control (including,
without limitation, attendance at meetings in person or by proxy for purposes of
obtaining a quorum and execution of written consents in lieu of meetings), to
effectuate the provisions of this Article III.

                  (d)      The Company shall take all necessary or desirable
actions within its control (including, without limitation, calling special board
and stockholder meetings) to

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effectuate the provisions of this Article III.

         Section 3.2 Nomination; Removal and Observer Rights.

                  (a) Each of Medicor, ERI and the Belfer Group shall have the
right to nominate one (1) director for election at the 2004 Annual Meeting to
serve as a class 3 member of the Board of Directors of the Company (the "Board")
until the Company's annual meeting of shareholders in 2007 and each of the
Medicor Parties, the ERI Parties and the Belfer Parties shall vote their shares
of Westport Common Stock in favor of the election of each nominee (or successor
nominee nominated in accordance with this Section 3.2(a)) named pursuant hereto.
Prior to the 2004 Annual Meeting, each of Medicor, ERI and the Belfer Group
shall have the power to replace any nominee such Shareholder Party has nominated
pursuant to this Section 3.2(a) with a substitute nominee upon notice to the
Company and the other Shareholder Parties given in accordance with Section 4.1.

                  (b) Each of Medicor, ERI and the Belfer Group, respectively,
shall have the right: (i) subject to applicable law, including Nevada Revised
Statutes 78.335(1) requiring a vote of not less than two-thirds of the issued
and outstanding voting power to remove an incumbent director, to remove, with or
without cause, any director nominated in accordance with this Section 3.2 by
Medicor, ERI or the Belfer Group, respectively, and each of the Medicor Parties,
the ERI Parties and the Belfer Parties shall vote their shares of Westport
Common Stock in furtherance of this provision; and (ii) to nominate any
replacement for a director nominated in accordance with this Section 3.2 by
Medicor, ERI or the Belfer Group, respectively, upon the death, resignation,
retirement, disqualification or removal from office of such director. The Board
shall duly appoint as a director each person so nominated to fill a vacancy on
the Board.

                  (c) For so long as any Shareholder Party has the right to
nominate a director under this Agreement or a director nominated by such
Shareholder Party pursuant to Section 3.2 hereof continues to serve on the
Board, and provided that such Shareholder Party (and/or its Permitted
Transferees (as such term is defined in the Registration Rights Agreement))
continues to own shares of Westport Common Stock:

                           (i) the Company will give such Shareholder Party
written notice of each regularly scheduled meeting of its Board as far in
advance as such notice is required to be delivered to the directors (and at
least three business days prior to the date of each special meeting of the
Board);

                           (ii) the Board will permit up to two representatives
of each such Shareholder Party to attend as observers all meetings of the Board
(including any meetings of committees thereof) and, in the case of telephonic
meetings conducted in accordance with the Company's bylaws and applicable law,
each such Shareholder Party's representative(s) will be given the opportunity to
listen to such telephonic meetings;

                           (iii) each Shareholder Party shall be permitted to
provide its representative(s) hereunder copies of all written materials and
other information (including, without limitation, copies of meeting minutes and
press releases) given to directors in connection

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with such meetings;

                           (iv) upon request of a Shareholder Party in
accordance with Section 4.1, the Company shall (1) deliver the materials and
other information described in the preceding paragraph directly to the
representative(s) of Shareholder Party named (and at the address(es) specified)
in such request and (2) deliver such materials and information to such
representative(s) at the same time such materials and information are given to
the directors (provided the timing of such request so allows) and continue to
provide such materials and information to such Shareholder Party's
representative(s) unless otherwise requested by such Shareholder Party in
accordance with Section 4.1;

                           (v) upon request of any director nominated by a
Shareholder Party pursuant to Section 3.2 hereof representing a Shareholder
Party who has the right to have representatives attend meetings of the Board as
an observer pursuant to this Section 3.2(c), the Company will give written
notice to such Shareholder Party (and to such Shareholder Party's
representative(s) identified pursuant to Section 3.2(c)(iv), if any) of any
action proposed to be taken by written consent in lieu of a meeting of the Board
or of any committee thereof, such notice to be delivered as soon as reasonably
practicable prior to the effective time of such consent and describing in
reasonable detail the nature and substance of such action; and

                           (vi) the Company will reimburse each Shareholder
Party that has observer rights under this Section 3.2(c) for all reasonable
expenses incurred by such Shareholder Party's representative(s) in connection
with attending meetings of the Board and committees thereof.

                  (d) Except as otherwise required by applicable law, any court
of competent jurisdiction or the rules or regulations of the New York Stock
Exchange, without the prior written consent of the Company, none of the Medicor
Group, ERI, the Belfer Group, nor any of their respective Affiliates, employees,
agents or representatives (including any representative serving as an observer
pursuant to Section 3.2(c) hereof) shall disclose to any third party any
information obtained about the Company, its operations or business which it may
have acquired pursuant to this Agreement (or through service as an observer
pursuant to Section 3.2(c) hereof); provided, that any information that is
otherwise publicly available, without breach of this provision, or has been
obtained from a third party without a breach of such third party's duties, shall
not be deemed confidential information. If requested by the Company, each
Shareholder Party shall cause any person serving as a representative of such
Shareholder Party pursuant to Section 3.2(c) hereof to execute a confidentiality
agreement on terms reasonably acceptable to the Company.

                                   ARTICLE IV
                            MISCELLANEOUS PROVISIONS

         Section 4.1 Notices. Any notice required to be given hereunder shall be
sufficient if in writing, and sent by facsimile transmission and by courier
service (with proof of service), hand delivery or certified or registered mail
(return receipt requested and first-class postage prepaid), addressed as
follows:

                                       6
<PAGE>

                  If to the Belfer Group or the Terminating Belfer Persons:

                           Robert A. Belfer
                           767 Fifth Avenue, 46th Floor
                           New York, New York 10153
                           Fax Number: (212) 644-2396
                           Phone Number: (212) 644-2200

                  With a copy to:

                           Laurence D. Belfer
                           767 Fifth Avenue, 46th Floor
                           New York, New York 10153
                           Fax Number: (212) 644-2396
                           Phone Number: (212) 644-0561

                  If to Westport:

                           Donald D. Wolf,
                           Chairman and Chief Executive Officer
                           1670 Broadway, Suite 2800
                           Denver, CO. 80202
                           Fax Number: (303) 573-5609
                           Phone Number: (303) 573-5404

                  With a copy to:

                           Akin Gump Strauss Hauer & Feld LLP
                           1700 Pacific Avenue, Suite 4100
                           Dallas, Texas  75201-4675
                           Attention: Michael E. Dillard, P.C.
                           Fax Number: (214) 969-4343
                           Phone Number: (214) 969-2800

                  If to the Medicor Group:

                           Medicor Foundation
                           Landstrasse 11
                           Postfach 130
                           9495 Triesen
                           Liechtenstein
                           Attention: Anton M. Lotzer
                           Fax Number: (423) 233-3934
                           Phone Number: (423) 239-6050

                                       7
<PAGE>

                  And to:

                           Westport Energy LLC
                           c/o Westport Investments Limited
                           Lyford Manor
                           Lyford Cay
                           P.O. Box N-7776
                           Nassau, Bahamas
                           Fax Number: (242) 362-5788

                  With a copy to:

                           Kenneth S. Witt
                           Greenberg Traurig, LLP
                           1200 17th Street, Suite 2400
                           Denver, CO 80202
                           Telephone: (303) 572-6510
                           Telecopy: (303) 572-6540

                  And to:

                           Michael Russell
                           Dr. Richard J. Haas Partners
                           Dukes Court
                           32 Duke Street, St. James's
                           London, SW1Y 6DF
                           Fax Number: 020.7.321.5242
                           Phone Number: 020.7.321.5200

                  If to ERI Investments, Inc.:

                           ERI Investments, Inc.
                           801 West Street, 2nd Floor
                           Wilmington, DE 19801-1545
                           Attention: Treasurer
                           Telephone: (302) 656-5590
                           Telecopy: (302) 428-1410

                  With a copy to:

                           Johanna G. O'Loughlin
                           Vice President, General Counsel and Secretary
                           Equitable Resources, Inc.
                           One Oxford Centre, Suite 3300
                           Pittsburgh, PA 15219
                           Telephone: (412) 553-7760

                                       8
<PAGE>

                           Telecopy: (412) 553-5970

                  And to:

                           Stephen W. Johnson, Esquire
                           Reed Smith LLP
                           435 Sixth Avenue
                           Pittsburgh, PA 15219-1886
                           Telephone: (412) 288-3131
                           Telecopy: (412) 288-3063

         Section 4.2. Termination. This Agreement shall terminate and shall
cease to be binding on the parties upon the earliest to occur of (i) with
respect to any Shareholder Party, the date on which such Shareholder Party
(together with its Permitted Transferees under the Registration Rights
Agreement, as such term is defined therein) no longer owns any shares of
Westport Common Stock and (ii) the date on which all of the parties hereto
mutually consent to terminate this Agreement in writing; provided, however, that
the provisions of Section 3.2(d) shall not terminate and shall remain in effect
indefinitely.

         Section 4.3 Further Assurances. From time to time upon request by any
party hereto and without further consideration, each of the parties hereto
shall, and shall cause its agents, affiliates, and/or assigns to, execute,
deliver and acknowledge all such further instruments and do such further acts as
any other party hereto may reasonably require to evidence or implement this
Agreement.

         Section 4.4 No Waiver; Remedies Cumulative. Any failure of any party
hereto to comply with any obligation, covenant, agreement or condition herein
may be waived by any other party hereto entitled to the benefit thereof only by
a written instrument signed by each 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. The
rights, remedies, powers and privileges herein provided are cumulative and not
exclusive of any rights, remedies, powers and privileges provided by law.

         Section 4.5 Governing Law. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of Nevada, regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof. The parties hereto agree that any suit, action or proceeding
arising out of, or with respect to, this Agreement or any judgment entered by
any court in respect thereof may be brought only in the courts of the State of
Nevada or the federal district courts located within the State of Nevada and the
parties hereto hereby accept the exclusive jurisdiction of those courts for the
purpose of any suit, action or proceeding.

         Section 4.6 Counterparts. This Agreement may be executed in any number
of counterparts and by different parties 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

                                       9
<PAGE>

same agreement.

         Section 4.7 Parties in Interest; Assignment. This Agreement and all of
the provisions hereof shall be binding upon and inure to the benefit of, and be
enforceable by, the parties hereto and their respective successors and permitted
assigns, but neither this Agreement nor any of the rights, interests or
obligations herein shall be assigned by any party hereto without the prior
written consent of each other party hereto, and any attempt to do so without
obtaining the required consent of such other parties shall be void. Nothing
herein expressed or implied is intended or shall be construed to confer upon or
give to any person other than the parties hereto and their respective successors
or permitted assigns, any rights or remedies under or by reason of this
Agreement.

         Section 4.8 Entire Agreement. This Agreement contains all of the terms
of the understanding of the parties hereto with respect to the subject matter
hereof. This Agreement supersedes all prior agreements and understandings with
respect to its subject matter.

         Section 4.9 Amendment. This Agreement may not be amended except by an
instrument in writing signed by each of the parties hereto; provided, however,
that the terms of Article III hereof may be amended by an instrument in writing
signed by each of the parties hereto other than the Terminating Belfer Persons.

         Section 4.10 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 provisions held to be invalid, and the rights and obligations of
the parties hereto shall be construed and enforced accordingly.

         Section 4.11 Headings. The headings used herein are for convenience of
reference only, are not a part of this Agreement and are not to affect the
construction of, or to be taken into consideration in interpreting, any
provision of this Agreement.

                            [SIGNATURE PAGE FOLLOWS]

                                       10
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have executed this Termination
and Voting Agreement and caused the same to be duly delivered on their behalf to
be effective as of the date first written above.

                         WESTPORT RESOURCES CORPORATION

                         By:____________________________________________________
                         Name:__________________________________________________
                         Title:_________________________________________________

                         WESTPORT ENERGY LLC

                           By: WESTPORT INVESTMENTS LIMITED, its
                           Managing Member

                             By:________________________________________________
                             Name:______________________________________________
                             Title:_____________________________________________

                         ERI INVESTMENTS, INC.

                         By:____________________________________________________
                         Name:__________________________________________________
                         Title:_________________________________________________

                         MEDICOR FOUNDATION

                         By:____________________________________________________
                         Name:__________________________________________________
                         Title:_________________________________________________

                         By:____________________________________________________
                         Name:__________________________________________________
                         Title:_________________________________________________

                         _______________________________________________________
                         Robert A. Belfer, individually

                                      S-1

<PAGE>

                            THE ROBERT A. AND RENEE E. BELFER
                            FAMILY FOUNDATION

                            By:_________________________________________________
                            Name: Robert A. Belfer
                            Title: Trustee and Donor

                            BELFER CORP.

                            By:_________________________________________________
                            Name: Robert A. Belfer
                            Title: President

                            RENEE HOLDINGS PARTNERSHIP, L.P.

                            By:_________________________________________________

                            Name: Robert A. Belfer
                            Title: General Partner

                            LDB CORP.

                            By:_________________________________________________
                            Name: Laurence D. Belfer
                            Title: President

                            ROBERT A. BELFER 1990 FAMILY TRUST

                            By:_________________________________________________
                            Name: Laurence D. Belfer
                            Title: Trustee

                                      S-2

<PAGE>

                            VANTZ LIMITED PARTNERSHIP

                            By: VANTZ LLC,
                                its General Partner

                                By:_____________________________________________
                                Name: Laurence D. Belfer
                                Title:

                            LDB TWO CORP.

                            By:_____________________________________________
                            Name:
                            Title:

                            BELFER TWO CORP.

                            By:_____________________________________________
                            Name:
                            Title:

                            LIZ PARTNERS, L.P.

                            By: LIZ ASSOCIATES LLC,
                                its General Partner

                                By:_________________________________________
                                Name:
                                Title:

                                      S-3

<PAGE>

                 Solely for the purposes of Article I, Article II and Article IV
                 hereof:

                                ________________________________________________
                                Jack Saltz, individually

                                SALTZ INVESTMENT GROUP, LLC

                                By:_____________________________________________
                                Name: Jack Saltz
                                Title: Manager and Member

                                JACK & ANITA SALTZ FOUNDATION

                                By:_____________________________________________
                                Name: Jack Saltz
                                Title: President

                                BELWEST PETROLEUM, INC.

                                By:_____________________________________________
                                Name: Robert A. Belfer
                                Title: President

                                A&B INVESTORS, INC.

                                By:_____________________________________________
                                Name: Robert A. Belfer
                                Title:

                                THE LAURENCE D. BELFER FAMILY
                                FOUNDATION

                                By:_____________________________________________
                                Name: Laurence D. Belfer
                                Title: Trustee and Donor

                                      S-4

<PAGE>

                                    EXHIBIT A

                              CERTAIN STOCKHOLDERS

The Robert A. and Renee E. Belfer Family Foundation
Robert A. Belfer
Belfer Corp.
Renee Holdings Partnership, L.P.
LDB Corp.
Robert A. Belfer 1990 Family Trust
Vantz Limited Partnership
LDB Two Corp.
Belfer Two Corp.
Liz Partners, L.P.

<PAGE>

                                    EXHIBIT B

                           TERMINATING BELFER PERSONS

Jack Saltz
Saltz Investment Group, LLC
Jack & Anita Saltz Foundation
Belwest Petroleum, Inc.
A&B Investors, Inc.
The Laurence D. Belfer Family Foundation

<PAGE>

                                    EXHIBIT C

                           THE SHAREHOLDERS AGREEMENT

                                   [ATTACHED]

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