Document:

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                                                                    EXHIBIT 10.2

                    FIRST RESERVE INVESTOR'S RIGHTS AGREEMENT

                  THIS FIRST RESERVE INVESTOR'S RIGHTS AGREEMENT (this
"Agreement") is made and entered into as of October 15, 2002, by and between
Quanta Services, Inc., a Delaware corporation (the "Company"), and First Reserve
Fund IX, L.P., a Delaware limited partnership ("Investor").

                                    RECITALS

                  WHEREAS, this Agreement is made pursuant to the Securities
Purchase Agreement, dated as of October 15, 2002, by and between the Company and
Investor (the "Securities Purchase Agreement");

                  WHEREAS, in order to induce Investor to enter into the
Securities Purchase Agreement, the Company has agreed to provide the
registration and other rights set forth in this Agreement;

                  WHEREAS, the Company has previously entered into that certain
Amended and Restated Investor's Rights Agreement dated as of May 20, 2002 (the
"Aquila Investor's Rights Agreement") pursuant to which the Company granted
Aquila, Inc., a Delaware corporation, certain registration and other rights;

                  WHEREAS, pursuant to the Securities Purchase Agreement,
Investor will acquire shares of the Company's Common Stock, par value $0.00001
per share, and Series E Preferred Stock (the "Preferred Stock"); and

                  WHEREAS, the execution and delivery of this Agreement shall
occur contemporaneously with the Tranche I Closing (as defined in the Securities
Purchase Agreement).

                                    AGREEMENT

                  The parties agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

                  Section 1.1 Definitions. Capitalized terms used herein without
definition shall have the meanings given to them in the Securities Purchase
Agreement. The terms set forth below are used herein as so defined:

                  "Acceptable Securities" has the meaning specified therefor in
Section 6.2(c) of this Agreement.

                  "Affiliate" of any Person shall mean:

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                       (a)   For purposes of Article III or Article VI, (i) any
Person directly or indirectly controlled by, controlling or under common control
with such first Person, (ii) any director or officer of such first Person or of
any Person referred to in clause (i) above and (iii) if any Person in clause (i)
above is an individual, any member of the immediate family (including parents,
spouse and children) of such individual and any trust whose principal
beneficiary is such individual or one or more members of such immediate family
and any Person who is controlled by any such member or trust. For purposes of
this definition, any Person which owns directly or indirectly 20% or more of the
securities having ordinary voting power for the election of directors or other
governing body of a corporation or 20% or more of the partnership or other
ownership interests of any other Person (other than as a limited partner of such
other Person) will be deemed to "control" (including, with its correlative
meanings, "controlled by" and "under common control with") such corporation or
other Person; and

                       (b)   For purposes of Article IV, (i) any Subsidiary of
such Person or (ii) a Parent of such Person.

                  "Beneficial Ownership," "Beneficial Owner," and "Beneficially
Own" have the meanings ascribed to such terms in Rule 13d-3 under the Exchange
Act.

                  "Business Day" means any day other than a Saturday, Sunday, or
a legal holiday for commercial banks in Houston, Texas, or New York, New York.

                  "Capital Stock Equivalents" has the meaning specified therefor
in Section 4.2(b) of this Agreement.

                  "Change of Control" shall be deemed to have occurred if (i)
any Person acquires, directly or indirectly, the Beneficial Ownership of any
Voting Security of the Company and immediately after such acquisition such
Person is, directly or indirectly, the Beneficial Owner of Voting Securities
representing 50% or more of the total voting power of all the then outstanding
Voting Securities of the Company entitled to vote generally in the election of
directors; or (ii) individuals who on the Tranche I Closing Date (as defined in
the Securities Purchase Agreement) constitute the Company's Board of Directors,
or their successors the election or nomination for the election by the Company's
stockholders of whom was approved by vote of at least 2/3rds of the directors
then still in office who were directors on the Tranche I Closing Date or their
successors approved in accordance with the terms hereof, cease for any reason to
constitute at least a majority of the Board of Directors.

                  "Commission" means the United States Securities and Exchange
Commission.

                  "Closing Price" has the meaning specified therefor in Section
4.2(d) of this Agreement.

                  "Common Stock" means the common stock, par value $0.00001 per
share, of the Company.

                  "Company" has the meaning specified therefor in the
introductory paragraph of this Agreement.

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                  "Competitor" means a provider to third parties of specialized
contracting and maintenance services, primarily for electric,
telecommunications, cable television, natural gas, and/or transportation
infrastructure (and with respect to natural gas and transportation
infrastructure, only if and when such business lines are a significant part of
the Company's overall business), in the United States and/or in other countries,
but only in any of such other countries if and when the Company develops a
substantial market for its services in such country.

                  "Conversion Shares" means the shares of Common Stock issuable
on conversion of the Preferred Stock.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
as amended, and the rules and regulations of the Commission promulgated
thereunder.

                  "Holder" means the record holder of any Registrable
Securities.

                  "Initial Buyer" has the meaning specified therefor in Section
6.2(a)(ii) of this Agreement.

                  "Inspectors" has the meaning specified therefor in Section
3.3(g) of this Agreement.

                  "Investor" has the meaning specified therefor in the
introductory paragraph of this Agreement.

                  "Losses" has the meaning specified therefor in Section 3.8(a)
of this Agreement.

                  "Matching Proposal" has the meaning specified therefor in
Section 6.2(a)(i) of this Agreement.

                  "NASDAQ" has the meaning specified therefor in Section 4.2(d)
of this Agreement.

                  "New Securities" has the meaning specified therefor in Section
4.2(b) of this Agreement.

                  "Other Holders" has the meaning specified therefor in Section
3.1(d) of this Agreement.

                  "Parent" means any corporation or other legal entity which at
the time directly or indirectly controls at least a majority of the equity of
such entity having by the terms thereof ordinary voting power to elect a
majority of the Board of Directors, managers, general partner(s), or other
equivalent governing body of such entity (irrespective of whether at the time
equity of any other class or classes of such entity might have voting power by
reason of the happening of any contingency).

                  "Permitted Transfer Percentage" means 15% from the date of
this Agreement until the third anniversary of this Agreement and 10% thereafter.

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                  "Person" means any individual, corporation, company, voluntary
association, partnership, joint venture, trust, limited liability company,
unincorporated organization, government or any agency, instrumentality or
political subdivision thereof, or any other form of entity.

                  "Pre-Emptive Purchasers" has the meaning specified therefor in
Section 4.1 of this Agreement.

                  "Pre-Emptive Right" has the meaning specified therefor in
Section 4.1 of this Agreement.

                  "Preferred Stock" has the meaning specified therefor in the
recitals hereof.

                  "Proportionate Number" has the meaning specified therefor in
Section 4.2(a) of this Agreement.

                  "Records" has the meaning specified therefor in Section 3.3(g)
of this Agreement.

                  "Registrable Securities" means the Conversion Shares and the
shares of Common Stock purchased by the Investor on the date of this Agreement
and any other shares of Common Stock acquired by the Investor (or any Person or
Persons to which all or a portion of Investor's rights under this Agreement are
assigned in accordance with the terms of this Agreement) after the date of this
Agreement, whether in privately negotiated or open market transactions, pursuant
to the exercise of rights to purchase shares granted pursuant to this Agreement
or pursuant to stock dividends, stock splits or other distributions in respect
of the Common Stock, until such time as any such securities cease to be
Registrable Securities pursuant to Section 1.2 hereof.

                  "Registration Expenses" has the meaning specified therefor in
Section 3.7(a) of this Agreement.

                  "Registration Statement" has the meaning specified therefor in
Section 3.1(b) of this Agreement.

                  "Requesting Holder(s)" has the meaning specified therefor in
Section 3.1(a) and (b), as applicable, of this Agreement.

                  "Request Notice" has the meaning specified therefor in Section
3.1(a) of this Agreement.

                  "Selling Expenses" has the meaning specified therefor in
Section 3.7(a) of this Agreement.

                  "Selling Holder" means a Holder who is selling Registrable
Securities pursuant to a Registration Statement.

                  "Shelf Request" has the meaning specified therefor in Section
3.1(b) of this Agreement.

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                  "Standstill Amount" has the meaning specified therefor in the
Securities Purchase Agreement.

                  "Subsidiary" means any corporation or other legal entity of
which the Company is the Parent.

                  "Superior Proposal" has the meaning specified therefor in
Section 6.2(b) of this Agreement.

                  "Third Party Proposer" has the meaning specified therefor in
Section 6.2(a)(i) of this Agreement.

                  "Third Party Tender Offer" shall mean a bona fide public offer
subject to the provisions of Regulation 14D under the Exchange Act, by a Person
(which is not made by and does not include the Investor or its Affiliates) to
purchase or exchange for cash or other consideration any Voting Stock of the
Company and which consists of an offer to acquire 30% or more of the Voting
Securities of the Company.

                  "Topping Period" has the meaning specified therefor in Section
6.2(a)(i) of this Agreement.

                  "Transfer" has the meaning specified therefor in Section 5.1
of this Agreement.

                  "Voting Capital Stock" has the meaning specified therefor in
Section 4.2(c) of this Agreement.

                  "Voting Percentage" has the meaning specified therefor in the
Securities Purchase Agreement.

                  "Voting Securities" has the meaning specified therefor in the
Securities Purchase Agreement.

                  Registrable Securities. Any Registrable Security will cease to
be a Registrable Security when (a) a Registration Statement covering such
Registrable Security has been declared effective by the Commission and such
Registrable Security has been sold or disposed of pursuant to such effective
Registration Statement; (b) such Registrable Security is disposed of pursuant to
Rule 144 (or any similar provision then in force) under the Securities Act; (c)
such Registrable Security is eligible to be, and at the time of determination
can be, disposed of pursuant to paragraph (k) of Rule 144 (or any similar
provision then in force) under the Securities Act; or (d) such Registrable
Security is held by the Company or one of its Subsidiaries.

                                   ARTICLE II
                         REPRESENTATIONS AND WARRANTIES

                  Section 2.1 Representations and Warranties by the Investor.
The Investor hereby represents and warrants to the Company as follows: (a) such
Investor has all requisite partnership and other power and authority (if
applicable) to execute, deliver and perform their respective obligations under
this Agreement; (b) the execution, delivery and performance of this Agreement

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by such Investor and the consummation of the transactions contemplated hereby
have been duly authorized by all requisite partnership and other action (if
applicable) on the part of such Investor; (c) this Agreement has been duly
executed and delivered by such Investor and constitutes a legal, valid and
binding obligation of such Investor, enforceable against such Investor in
accordance with its terms, except to the extent that enforceability may be
limited by bankruptcy, insolvency or other similar laws affecting creditors
rights generally or by general principles of equity; (d) no governmental
consent, approval, authorization, license or clearance, or filing or
registration, by such Investor, with any governmental or regulatory authority,
is required in order to permit such Investor to perform its obligations under
this Agreement, except for such as have been obtained; and (e) prior to the
consummation of the transactions contemplated by the Securities Purchase
Agreement and the Aquila Sale, the Investor does not Beneficially Own any shares
of Common Stock and does not have the right to vote any shares of capital stock
of the Company.

                  Section 2.2  Representations and Warranties of the Company.
The Company represents and warrants to the Investors as follows: (a) The Company
has all requisite corporate power and authority to execute, deliver and perform
its obligations under this Agreement; (b) the execution, delivery and
performance of this Agreement by the Company and the consummation of the
transactions contemplated hereby have been duly authorized by all requisite
corporate action on the part of the Company; (c) this Agreement has been duly
executed and delivered by the Company and constitutes a legal, valid and binding
obligation of the Company, enforceable against the Company in accordance with
its terms, except to the extent that enforceability may be limited by
bankruptcy, insolvency or similar laws affecting creditors rights generally or
by general principles of equity; and (d) no governmental consent, approval,
authorization, license or clearance, or filing or registration with any
governmental or regulatory authority, is required in order to permit the Company
to perform its obligations under this Agreement, except for such as have been
obtained.

                                  ARTICLE III
                              REGISTRATION RIGHTS

                  Section 3.1  Demand Registration.

                          (a)    Request for Registration. At any time after the
date hereof, any Holder or Holders who collectively Beneficially Own at least
the minimum number of Registrable Securities specified in Section 3.1(b) below
may request (a "Request Notice") the Company to register under the Securities
Act all or any portion of the Registrable Securities that are held by such
Holder or Holders (collectively, the "Requesting Holder") for sale in the manner
specified in the Request Notice; provided, however, that, with respect to a
Request Notice that is not a Shelf Request (as defined below), no such request
may be made until six (6) months after the date on which the Registrable
Securities covered by the Request Notice were issued; provided, further, that
with respect to a Request Notice that is a Shelf Request, no such request may be
made until one (1) year after the date on which the Registrable Securities
covered by the Request Notice were issued; and provided, further, that no such
request pursuant to this Section 3.1(a) may be made so long as the Company is
currently acting upon the request of Aquila, Inc. to effect a registration
pursuant to Section 2.1(a) of the Aquila Investor's Rights Agreement.

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                          (b)   Company's Obligations. Promptly following
receipt of a Request Notice, the Company shall (i) notify each Holder (except
the Requesting Holder) of the receipt of a Request Notice and (ii) shall use its
commercially reasonable efforts to effect such registration (including, without
limitation, preparing and filing a registration statement under the Securities
Act (each such registration statement, a "Registration Statement") effecting the
registration under the Securities Act, for public sale in accordance with the
method of disposition specified in such Request Notice) of the Registrable
Securities specified in the Request Notice (and in any notices that the Company
receives from other Holders no later than the 15th calendar day after receipt of
the notice sent by the Company) (such other Holders and the Requesting Holders,
the "Requesting Holders"); provided, however, that the Company's obligations
under this Section 3.1(b) shall be subject to such registration being for no
less than the higher of 500,000 shares and 1% of the outstanding Voting
Securities. If such method of disposition shall be an underwritten public
offering, the Company may designate the managing underwriter of such offering,
subject to the approval of the Requesting Holders holding a majority of the
Registrable Securities to be registered, which approval shall not be withheld
unreasonably. The Company shall be obligated to register Registrable Securities
pursuant to this Section 3.1 on not more than three (3) occasions in the
aggregate on behalf of all Holders (including any transferees or assignees of
Investor pursuant to Section 3.10); provided, however, that the Company shall
not be required to file a Registration Statement pursuant to a Request Notice
less than six (6) months following the later of the effective date of the most
recent Registration Statement filed pursuant to a Request Notice or the last
sale of securities pursuant to any such Registration Statement; and provided,
further, that one of such three demand registrations (the "Shelf Request") may
be used for a shelf registration statement (which (i) shall include as selling
stockholders, if requested by Investor, any limited partners of Investor to
which Investor has distributed Registrable Securities and (ii) the Company shall
not be required to maintain the effectiveness thereof beyond one year (but the
Company may, in its sole discretion, maintain the effectiveness thereof for such
longer period as it desires)).

                          (c)   Deferral by the Company. If the Company has
received a Request Notice, whether or not a Registration Statement with respect
thereto has been filed or has become effective, or an event referred to in
Section 3.3(e) has occurred, and the Company furnishes to the Requesting Holders
a copy of a resolution of the Board of Directors of the Company certified by the
Secretary of the Company stating that, in the good faith judgment of the Board
of Directors, it would not be in the best interest of the Company's stockholders
for such Registration Statement (i) to be filed on or before the date such
filing would otherwise be required hereunder, (ii) to become effective or (iii)
to be updated by post-effective amendment or prospectus supplement because (A)
such action would materially interfere with a significant acquisition, corporate
reorganization or other similar transaction involving the Company, (B) such
action would require premature disclosure of material information that the
Company has a bona fide business purpose for preserving as confidential, or (C)
the Company is unable to comply with requirements of the Commission, then the
Company shall have the right, but not more than once in any 365-day period with
respect to any Request Notice, to defer such filing, effectiveness or update for
such period as may be reasonably necessary (which period shall not, in any
event, exceed 90 calendar days from the date the response period for Holders
pursuant to Section 3.1(b) expires).

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                          (d)   Participation Rights of the Company and Others.
The Company shall be entitled to include in any Registration Statement filed
pursuant to this Section 3.1, for sale in accordance with the method of
disposition specified by the Requesting Holder, securities of the Company
entitled to vote generally in the election of directors (or any securities
convertible into or exchangeable for or exercisable for the purchase of
securities so entitled generally to vote in the election of directors (whether
or not then convertible, exchangeable or exercisable)) (collectively, "Company
Registrable Securities") to be sold by the Company for its own account, except
as and to the extent that, in the opinion of the managing underwriter (if such
method of disposition shall be an underwritten public offering), such inclusion
would materially jeopardize the successful marketing of the Registrable
Securities to be sold. Any Person other than a Holder (the "Other Holders")
entitled to piggy-back registration rights with respect to a Registration
Statement filed pursuant to this Section 3.1 (by virtue of another agreement
with the Company granting such Other Holder registration rights with respect to
Voting Securities of the Company (an "Other Registration Rights Agreement")) may
include Voting Securities of the Company with respect to which such rights apply
in such Registration Statement for sale in accordance with the method of
disposition specified by the Requesting Holder, except and to the extent that,
in the opinion of the managing underwriter (if such method of disposition shall
be an underwritten public offering), such inclusion would materially jeopardize
the successful marketing of the Registrable Securities to be sold and except as
such Other Holder's rights may be subject to underwriter's cut-backs and other
restrictions as set forth in such Other Registration Rights Agreement. Except as
provided in this subsection (d) and in Section 3.6 of this Agreement, the
Company will not effect any other registration of its Company Registrable
Securities (except with respect to registration statements (i) on Form S-4 or
S-8 or any forms succeeding thereto for purposes permissible under such forms as
of the date hereof or (ii) filed in connection with an exchange offer or an
offering of securities solely to the Company's existing stockholders or such
other Registration Statements (A) for the resale of shares issued pursuant to an
employee stock ownership trust or other benefit plan of a business acquired in
an acquisition by the Company or (B) in connection with non-underwritten resales
of securities issued to owners of a business acquired in an acquisition by the
Company), whether for its own account or that of any Other Holder, from the date
of receipt of a Request Notice requesting the registration of an underwritten
public offering until the completion or abandonment of the distribution by the
underwriters of all securities thereunder; provided, however, such restricted
period shall not extend beyond the date 90 calendar days subsequent to the
effective date of such Registration Statement.

                          (e)   Prohibition on Future Grants. From and after the
date of this Agreement and until no Registrable Securities remain outstanding,
the Company shall not grant any demand registration rights to any Person unless
such rights are expressly made subject to the right of the Holders to include an
equal number of shares of the Registrable Securities along with the other
Person's shares in any registration relating to an underwritten public offering,
except and to the extent that, in the opinion of the managing underwriter, the
inclusion of all shares requested to be registered by all Persons holding
registration rights, would materially jeopardize the successful marketing of the
securities (including the Registrable Securities) to be sold.

                          (f)   Participation Rights of Aquila, Inc.
Notwithstanding anything in Section 3.1(d) to the contrary, the demand
registration rights granted to the Holders pursuant to this Agreement are
subject to the prior rights of Holders (as defined in the Aquila Investor's

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Rights Agreement), to include in any registration relating to an underwritten
public offering, an equal number of shares of Registrable Securities (as defined
in the Aquila Investor's Rights Agreement), except and to the extent that, in
the opinion of the managing underwriter, the inclusion of all shares requested
to be registered by all Persons holding registration rights, would materially
jeopardize the successful marketing of the securities (including the Registrable
Securities (as defined in the Aquila Investor's Rights Agreement)) to be sold;
and provided, that nothing in this Agreement shall be construed to limit Aquila,
Inc.'s rights to demand registrations under the Aquila Investor's Rights
Agreement. For the avoidance of doubt, the term "Holders" as used in this
Section 3.1(f) herein shall include the Holders (as defined in the Aquila
Investor's Rights Agreement).

                  Section 3.2  Piggy-Back Registration.

                          (a)    Company Notice. If the Company proposes to
register any Company Registrable Securities under the Securities Act for sale to
the public for cash, whether for its own account or for the account of Other
Holders or both (except with respect to registration statements on Forms S-4 or
S-8 or any forms succeeding thereto for purposes permissible under such forms as
of the date hereof or filed in connection with a merger, consolidation,
acquisition or similar transaction, or an exchange offer or an offering of
securities solely to the Company's existing stockholders), each such time it
will give written notice to all Holders of its intention to do so no less than
20 calendar days prior to the anticipated filing date.

                          (b)    Request. Upon the written request of any Holder
received by the Company no later than the 15th calendar day after receipt by
such Holder of the notice sent by the Company, to register, on the same terms
and conditions as the securities otherwise being sold pursuant to such
registration, any of its Registrable Securities (which request shall state the
intended method of disposition thereof), the Company will use its commercially
reasonable efforts to cause the Registrable Securities as to which registration
shall have been so requested to be included in the securities to be covered by
the registration statement proposed to be filed by the Company, on the same
terms and conditions as any similar securities included therein, all to the
extent requisite to permit the sale or other disposition by each Holder (in
accordance with its written request) of such Registrable Securities so
registered; provided, however, that the Company may at any time, in its sole
discretion and without the consent of any Holder, abandon the proposed offering
in which any Holder had requested to participate.

                          (c)    Underwriter's Cut-Back. The number of
Registrable Securities to be included in such a registration may be reduced or
eliminated if and to the extent that, in the case of an underwritten offering,
the managing underwriter shall render to the Company its opinion that such
inclusion would materially jeopardize the successful marketing of the securities
(including the Registrable Securities) proposed to be sold therein; provided,
however, that (a) in the case of a Registration Statement filed pursuant to the
exercise of demand registration rights of any Other Holders, priority shall be
given in the following manner of allocation: (i) first, to the Other Holders
demanding such registration; (ii) then to the Company; (iii) then equally (on a
share-for-share basis) to the holders of the Company's Series A preferred stock
and the Holders and (iv) then to Other Holders or other stockholders of the
Company desiring to participate with the Company's consent (other than the Other
Holders entitled to participate under clause (i) or (ii)), and (b) in the case
of a Registration Statement the filing of which is initiated by the

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Company, priority shall be given in the following order of allocation: (i) first
to the Company; (ii) then equally (on a share-for-share basis) to the holders of
the Company's Series A preferred stock and the Holders and (iii) then to Other
Holders (other than Other Holders entitled to participate under clause (ii)). In
the event that the number of Registrable Securities to be included in a
registration is to be reduced as provided above, within 10 business days after
receipt by each Holder proposing to sell Registrable Securities pursuant to the
registered offering of the opinion of such managing underwriter, all such
Selling Holders may allocate among themselves the number of shares of such
Registrable Securities which such opinion states may be distributed without
adversely affecting the distribution of the securities covered by the
Registration Statement or, if less, the number of such shares allocable to
Holders of Registrable Securities after reduction for any allocations to the
Company or Other Holders in accordance with the priority provisions set forth in
the preceding sentence, and if such Holders are unable to agree among themselves
with respect to such allocation, such allocation shall be made in proportion to
the respective numbers of shares specified in their respective written requests.

                          (d)   Prohibition on Future Grants. From and after the
date of this Agreement and until no Registrable Securities remain outstanding,
the Company shall not grant any piggy-back registration rights to any Person
unless such rights are expressly made subject to the prior right of Holders to
include their Registrable Securities on a pro-rata basis in any registration
relating to an underwritten public offering, except and to the extent that, in
the opinion of the managing underwriter, the inclusion in the offering of all
shares requested to be registered by all Persons holding registration rights
would materially jeopardize the successful marketing of the securities
(including the Registrable Securities) to be sold.

                  Section 3.3 Registration Procedures. If and whenever the
Company is required pursuant to this Agreement to effect the registration of any
of the Registrable Securities under the Securities Act, the Company will, as
expeditiously as reasonably possible:

                          (a)   prepare and afford counsel for the Selling
Holders a reasonable opportunity to review and comment thereon and file with the
Commission a Registration Statement, on a form available to the Company, with
respect to such securities (which filing shall be made within 30 calendar days
after the receipt by the Company of a Request Notice) and use its commercially
reasonable efforts to cause such Registration Statement to become and remain
effective for the period of the distribution contemplated thereby (determined
pursuant to subsection (g) below);

                          (b)   prepare and afford counsel for the Selling
Holders a reasonable opportunity to review and comment thereon and file with the
Commission such amendments and supplements to such Registration Statement and
the prospectus used in connection therewith as may be necessary to keep such
Registration Statement effective for the distribution period (determined
pursuant to subsection (g) below) and as may be necessary to comply with the
provisions of the Securities Act with respect to the disposition of all
securities covered by such Registration Statement;

                          (c)   furnish to each Selling Holder and to each
underwriter such number of copies of the Registration Statement and the
prospectus included therein (including each preliminary prospectus and each
document incorporated by reference therein to the extent

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then required by the rules and regulations of the Commission) as such Persons
may reasonably request in order to facilitate the public sale or other
disposition of the Registrable Securities covered by such Registration
Statement;

               (d)  if applicable, use its commercially reasonable efforts to
register or qualify the Registrable Securities covered by such Registration
Statement under the securities or blue sky laws of such jurisdictions as the
Selling Holders or, in the case of an underwritten public offering, the managing
underwriter, shall reasonably request, provided that the Company will not be
required to qualify generally to transact business in any jurisdiction where it
is not then required to so qualify or to take any action which would subject it
to general service of process in any such jurisdiction where it is not then so
subject;

               (e)  immediately notify each Selling Holder and each underwriter,
at any time when a prospectus relating thereto is required to be delivered under
the Securities Act, of the happening of any event as a result of which the
prospectus contained in such Registration Statement, as then in effect, includes
an untrue statement of a material fact or omits to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading in the light of the circumstances then existing and as promptly as
practicable amend or supplement the prospectus or take other appropriate action
so that the prospectus does not include an untrue statement of a material fact
or omit to state a material fact required to be stated therein or necessary to
make the statements therein not misleading in the light of the circumstances
then existing;

               (f)  in the case of an underwritten public offering, furnish upon
request, (i) on the date that Registrable Securities are delivered to the
underwriters for sale pursuant to such Registration Statement, an opinion of
counsel for the Company dated as of such date and addressed to the underwriters
and to the Selling Holders, stating that such Registration Statement has become
effective under the Securities Act and that (A) to the best knowledge of such
counsel, no stop order suspending the effectiveness thereof has been issued and
no proceedings for that purpose have been instituted or are pending or
contemplated under the Securities Act, (B) the Registration Statement, the
related prospectus, and each amendment or supplement thereof comply as to form
in all material respects with the requirements of the Securities Act and the
applicable rules and regulations thereunder of the Commission (except that such
counsel need express no opinion as to the financial statements, or any
expertized schedule, report or information contained or incorporated therein)
and (C) to such other effects as may reasonably be requested by counsel for the
underwriters, and (ii) on the effective date of the Registration Statement and
on the date that Registrable Securities are delivered to the underwriters for
sale pursuant to such Registration Statement, a letter dated such dates from the
independent accountants retained by the Company, addressed to the underwriters
and, if available, to the Selling Holders, stating that they are independent
public accountants within the meaning of the Securities Act and that, in the
opinion of such accountants, the financial statements of the Company and the
schedules thereto that are included or incorporated by reference in the
Registration Statement or the prospectus, or any amendment or supplement
thereof, comply as to form in all material respects with the applicable
requirements of the Securities Act and the published rules and regulations
thereunder, and such letter shall additionally address such other financial
matters (including information as to the period ending no more than five
business days prior to the date of such letter) included in the Registration

                                       11

<PAGE>

Statement in respect of which such letter is being given as the underwriters may
reasonably request;

               (g)  subject to applicable confidentiality obligations, make
available for inspection by one representative of the Selling Holders,
designated by a majority thereof, any underwriter participating in any
distribution pursuant to such Registration Statement, and any attorney,
accountant or other agent retained by such representative of the Selling Holders
or underwriter (the "Inspectors"), all financial and other records, pertinent
corporate documents and properties of the Company (collectively, the "Records"),
and cause the Company's officers, directors and employees to supply all
information reasonably requested by any such Inspector in connection with such
Registration Statement; provided, however, that with respect to any Records that
are confidential, the Inspectors shall take such action as the Company may
reasonably request to maintain the confidentiality of the Records. For purposes
of subsections (a) and (b) above with respect to demand registration only, the
period of distribution of Registrable Securities in a firm commitment
underwritten public offering shall be deemed to extend until the earlier of (a)
the date each underwriter has completed the distribution of all securities
purchased by it or (b) the date 90 calendar days subsequent to the effective
date of such Registration Statement, and the period of distribution of
Registrable Securities in any other registration shall be deemed to extend until
the earlier of the sale of all Registrable Securities covered thereby or one
year;

               (h)  cause all such Registrable Securities registered pursuant
to this Agreement to be listed on each securities exchange on which similar
securities issued by the Company are then listed;

               (i)  use its commercially reasonable efforts to keep effective
and maintain for the period specified in subsection (g) a registration,
qualification, approval or listing obtained to cover the Registrable Securities
as may be necessary for the Selling Holders to dispose thereof and shall from
time to time amend or supplement any prospectus used in connection therewith to
the extent necessary to comply with applicable law;

               (j)  use its commercially reasonable efforts to cause the
Registrable Securities to be registered with or approved by such other
governmental agencies or authorities as may be necessary by virtue of the
business and operations of the Company to enable the Selling Holders to
consummate the disposition of such Registrable Securities; and

               (k)  enter into customary agreements and take such other actions
as are reasonably requested by the Selling Holders or the underwriters, if any,
to expedite or facilitate the disposition of such Registrable Securities.

          Each Selling Holder, upon receipt of notice from the Company of the
happening of any event of the kind described in subsection (e) of this Section
3.3, shall forthwith discontinue disposition of the Registrable Securities until
such Selling Holder's receipt of the copies of the supplemented or amended
prospectus contemplated by subsection (e) of this Section 3.3 or until it is
advised in writing by the Company that the use of the prospectus may be resumed,
and has received copies of any additional or supplemental filings that are
incorporated by reference in the prospectus, and, if so directed by the Company,
such Selling Holder will, or

                                       12

<PAGE>

will request the managing underwriter or underwriters, if any, to deliver to the
Company (at the Company's expense) all copies in their possession or control,
other than permanent file copies then in such Selling Holder's possession, of
the prospectus covering such Registrable Securities current at the time of
receipt of such notice. If the Company shall give any such notice, the time
periods mentioned in subsection (g) of this Section 3.3 shall be extended by the
number of days during the period from and including the date of the giving of
such notice to and including the date when each Selling Holder shall have
received the copies of the supplemented or amended prospectus contemplated by
subsection (e) of this Section 3.3 hereof or the notice that they may resume use
of the prospectus.

          In connection with each registration hereunder with respect to an
underwritten public offering, the Company and each Selling Holder agrees to
enter into a written agreement with the managing underwriter or underwriters
selected in the manner herein provided in form and containing provisions as are
customary in the securities business for such an arrangement between
underwriters and companies of the Company's size and investment stature.

          Section 3.4 Cooperation By Selling Holders. The Company shall have no
obligation to include in any Registration Statement shares of a Selling Holder
who has failed to timely furnish such information which, in the written opinion
of counsel to the Company, is reasonably required for the Registration Statement
to comply with the Securities Act.

          Section 3.5 Restrictions on Public Sale by Selling Holders of
Registrable Securities. To the extent not inconsistent with applicable law,
including insurance codes, each Selling Holder of Registrable Securities that is
included in a registration statement that registers Registrable Securities
pursuant to this Agreement agrees not to effect any public sale or distribution
of the issue being registered (or any securities of the Company convertible into
or exchangeable or exercisable for securities of the same type as the issue
being registered) during the 14 business days before, and during the 90 calendar
day period beginning on, the effective date of a registration statement filed by
the Company (except as part of such registration), but only if and to the extent
requested in writing (with reasonable prior notice) by the managing underwriter
or underwriters in the case of an underwritten public offering by the Company of
securities of the same type as the Registrable Securities, provided that the
duration of the foregoing restrictions shall be no longer than the duration of
the shortest restriction imposed by the underwriters on the officers or
directors or any other stockholder of the Company on whom a restriction is
imposed; and, provided further that to the extent the Selling Holders do not
participate in the underwritten public offering, the period of time for which
the Company is required to keep any other Registration Statement which includes
Registrable Securities that is effective concurrently with the holdback period
described above continuously effective shall be increased by a period equal to
such requested holdback period.

          Section 3.6 Restrictions on Public Sale by the Company. To the extent
required by an underwriter in an underwritten public offering, the Company
agrees not to effect on its own behalf any public sale or distribution of any
securities similar to those being registered, or any securities convertible into
or exchangeable or exercisable for such securities, during the 14 business days
before, and during the 90 calendar day period beginning on, the effective date
of any Registration Statement filed pursuant to Section 3.1 except pursuant to
such registration statement or a registration statement on Form S-8 or Form S-4
or such other registration

                                       13

<PAGE>

statements for (a) the resale of shares issued pursuant to an employee stock
ownership trust or other benefit plan of a business acquired in an acquisition
by the Company or (b) in connection with non-underwritten commitments to
register the resale of securities issued to owners of a business acquired in an
acquisition by the Company.

          Section 3.7 Expenses.

               (a)  Certain Definitions. "Registration Expenses" means all
expenses incident to the Company's performance under or compliance with this
Agreement, including, without limitation, all registration and filing fees, blue
sky fees and expenses, printing expenses, listing fees, fees and disbursements
of counsel and independent public accountants for the Company, fees of the
National Association of Securities Dealers, Inc., transfer taxes, fees of
transfer agents and registrars, costs of insurance and reasonable out-of-pocket
expenses, including, without limitation, all reasonable expenses incurred
directly by the Selling Holders for one legal counsel, but excluding any Selling
Expenses. "Selling Expenses" means all underwriting fees, discounts and selling
commissions allocable to the sale of the Registrable Securities.

               (b)  Parties' Obligations. The Company will pay all Registration
Expenses in connection with each Registration Statement filed pursuant to this
Agreement, whether or not the Registration Statement becomes effective, and the
Selling Holders shall pay all Selling Expenses.

          Section 3.8 Indemnification.

               (a)  By the Company. In the event of a registration of any
Registrable Securities under the Securities Act pursuant to this Agreement, the
Company will indemnify and hold harmless each Selling Holder thereunder and each
underwriter, pursuant to the applicable underwriting agreement with such
underwriter, and each Person, if any, who controls such Selling Holder or
underwriter within the meaning of the Securities Act and the Exchange Act,
against any losses, claims, damages or liabilities (including reasonable
attorneys' fees) (collectively, "Losses"), joint or several, to which such
Selling Holder or underwriter or controlling Person may become subject under the
Securities Act, the Exchange Act or otherwise, insofar as such Losses (or
actions in respect thereof) arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained in any Registration
Statement under which such Registrable Securities were registered under the
Securities Act pursuant to this Agreement, any preliminary prospectus or final
prospectus contained therein, or any amendment or supplement thereof, or arise
out of or are based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, and will reimburse each such Selling Holder, each such
underwriter and each such controlling Person for any legal or other expenses
reasonably incurred by them in connection with investigating or defending any
such Loss or actions; provided, however, that the Company will not be liable in
any such case if and to the extent that any such loss, claim, damage or
liability arises out of or is based upon an untrue statement or alleged untrue
statement or omission or alleged omission so made in conformity with information
furnished by such Selling Holder, such underwriter or such controlling Person in
writing specifically for use in such Registration Statement or prospectus.

                                       14

<PAGE>

               (b)  By the Selling Holder(s). Each Selling Holder agrees to
indemnify and hold harmless the Company, its directors, officers, employees and
agents and each Person, if any, who controls the Company within the meaning of
the Securities Act or of the Exchange Act to the same extent as the foregoing
indemnity from the Company to such Selling Holder, but only with respect to
information regarding such Selling Holder furnished in writing by or on behalf
of such Selling Holder expressly for inclusion in any Registration Statement or
prospectus relating to the Registrable Securities, or any amendment or
supplement thereto; provided, however, that the liability of such Selling Holder
shall not be greater in amount than the dollar amount of the proceeds (net of
any Selling Expenses) received by such Selling Holder from the sale of the
Registrable Securities giving rise to such indemnification.

               (c)  Notice. Promptly after receipt by an indemnified party
hereunder of notice of the commencement of any action, such indemnified party
shall, if a claim in respect thereof is to be made against the indemnifying
party hereunder, notify the indemnifying party in writing thereof, but the
omission so to notify the indemnifying party shall not relieve it of any
liability that it may have to any indemnified party other than under this
Section 3.8. The indemnifying party shall be entitled to participate in and, at
its election, to the extent it shall wish, to assume and undertake the defense
of any such action with counsel reasonably satisfactory to such indemnified
party and, after notice from the indemnifying party to such indemnified party of
its election so to assume and undertake the defense thereof, the indemnifying
party shall not be liable to such indemnified party under this Section 3.8 for
any legal expenses subsequently incurred by such indemnified party in connection
with the defense thereof other than reasonable costs of investigation and of
liaison with counsel so selected; provided, however, that, (i) if the
indemnifying party has failed to assume the defense and employ counsel or (ii)
if the defendants in any such action include both the indemnified party and the
indemnifying party and counsel to the indemnified party shall have concluded
that there may be reasonable defenses available to the indemnified party that
are different from or additional to those available to the indemnifying party or
if the interests of the indemnified party reasonably may be deemed to conflict
with the interests of the indemnifying party, then the indemnified party shall
have the right to select a separate counsel and to assume such legal defense and
otherwise to participate in the defense of such action, with the reasonable
expenses and fees of such separate counsel and other reasonable expenses related
to such participation to be reimbursed by the indemnifying party as incurred.

               (d)  Contribution. If the indemnification provided for in this
Section 3.8 is held by a court or government agency of competent jurisdiction to
be unavailable to the Company or the Selling Holders or is insufficient to hold
them harmless in respect of any Losses, then each such indemnifying party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or payable by such indemnified party as a result of such Losses as between the
Company on the one hand and each Selling Holder on the other, in such proportion
as is appropriate to reflect the relative fault of the Company on the one hand
and of each Selling Holder on the other in connection with the statements or
omissions that resulted in such Losses as well as any other relevant equitable
considerations; provided, however, that in no event shall a Selling Holder be
required to contribute an aggregate amount in excess of the dollar amount of
proceeds (net of Selling Expenses) received by such Selling Holder from the sale
of Registrable Securities giving rise to such indemnification. The relative
fault of the Company on the one hand and each Selling Holder on the other shall
be determined by reference to, among other things,

                                       15

<PAGE>

whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact has been made by, or
relates to, information supplied by such party, and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who is not guilty of such fraudulent
misrepresentation.

          Section 3.9 Rule 144 Reporting. With a view to making available the
benefits of certain rules and regulations of the Commission that may permit the
sale of the Registrable Securities to the public without registration, the
Company agrees to use commercially reasonable efforts to:

               (a)  Make and keep public information regarding the Company
available, as those terms are understood and defined in Rule 144 of the
Securities Act, at all times from and after the Closing Date;

               (b)  File with the Commission in a timely manner all reports and
other documents required of the Company under the Securities Act and the
Exchange Act at all times from and after the Closing Date; and

               (c)  So long as a Holder owns any Registrable Securities, furnish
to the Holder forthwith upon written request a written statement by the Company
as to its compliance with the reporting requirements of Rule 144 and of the
Securities Act and the Exchange Act, a copy of the most recent annual or
quarterly report of the Company, and such other reports and documents so filed
as a Holder may reasonably request in availing itself of any rule or regulation
of the Commission allowing a Holder to sell any such securities without
registration.

          Section 3.10 Transfer or Assignment of Registration Rights. The rights
to cause the Company to register Registrable Securities granted to Investor by
the Company under this Article III may be transferred or assigned by Investor,
all or in part, only to a transferee or assignee of such Registrable Securities
permitted under Article V hereof and only if the Company is given written notice
prior to said transfer or assignment, stating the name and address of such
transferee or assignee and identifying the securities with respect to which such
registration rights are being transferred or assigned, and, provided further,
that such transferee or assignee assumes in writing the restrictions on Investor
under this Agreement. Such registration rights shall not otherwise be
transferable, except for a Change of Control of Investor.

                                   ARTICLE IV
                                PRE-EMPTIVE RIGHT

          Section 4.1 Pre-Emptive Right. Subject to Section 4.5 hereof, the
Company hereby grants to each Holder (the "Pre-Emptive Purchasers") an
irrevocable right to purchase a Proportionate Number (as defined in Section
4.2(a)) of shares of Common Stock in respect of the issuance or sale (or deemed
issuance or sale) by the Company, from time to time during each month commencing
with the month during which this Agreement becomes effective, of New Securities
to third parties (the "Pre-Emptive Right"); provided that no Holder shall
exercise such

                                       16

<PAGE>

Pre-Emptive Right in connection with the exercise of any pre-emptive rights held
by any other person. The Pre-Emptive Right shall be subject to the following
provisions of this Article IV.

          Section 4.2 Certain Definitions and Determinations.

               (a)  Proportionate Number. The "Proportionate Number" of shares
of Common Stock that may be purchased by a Pre-Emptive Purchaser in respect of
the applicable month shall be the number of shares of Common Stock that such
Pre-Emptive Purchaser would be required to purchase in order that such
Pre-Emptive Purchaser's Voting Percentage, after giving effect to the issuance
of the number of New Securities issued or sold (or deemed to be issued or sold)
by the Company to third parties during such applicable month would be equal to
such Pre-Emptive Purchaser's Voting Percentage at the beginning of such month.

               (b)  "New Securities" shall mean (i) any Voting Capital Stock of
the Company whether now or hereafter authorized including, without limitation,
issuances by the Company in connection with acquisitions and issuances in
connection with pre-emptive rights of the holder(s) of the Company's Series A
preferred stock and (ii) in the case of the issuance or sale of rights, options,
or warrants to purchase such Voting Capital Stock, and securities of any type
whatsoever that are, or may become, convertible into Voting Capital Stock
(collectively, "Capital Stock Equivalents"), the Voting Capital Stock issued
upon the exercise or conversion of such Capital Stock Equivalents (including
securities issued upon conversion or exercise of any currently outstanding
Capital Stock Equivalents); provided that the term "New Securities" does not
include (i) securities issuable upon conversion of the Preferred Stock or the
Series A preferred stock; (ii) securities issued in connection with any stock
split, stock dividend or recapitalization of the Company; or (iii) securities
issued upon conversion or exercise of any Capital Stock Equivalents if the
Pre-Emptive Right was provided upon the issuance of such Capital Stock
Equivalent.

               (c)  "Voting Capital Stock" shall mean Common Stock or other
capital stock which is entitled to vote generally with the Common Stock upon the
election of directors and other matters submitted to a general vote of
stockholders.

               (d)  "Closing Price" shall mean on any particular date (i) if the
Common Stock is listed on a stock exchange, the last sale price per share of
Common Stock on such date on the principal stock exchange on which the Common
Stock has been listed or, if there is no such price on such date, then the last
sale price on such exchange on the date nearest preceding such date, (ii) if the
Common Stock is not listed on any stock exchange, the final bid price for a
share of Common Stock in the over-the-counter market, as reported by the
National Association of Securities Dealers Automated Quotation System ("NASDAQ")
at the close of business on such date, or the last sales price if such price is
reported and final bid prices are not available, (iii) if the Common Stock is
not quoted on the NASDAQ, the bid price for a share of Common Stock in the
over-the-counter market as reported by the National Quotation Bureau
Incorporated (or any similar organization or agency succeeding to its functions
of reporting prices), or (iv) if the Common Stock is no longer publicly traded,
as determined in good faith by the Board of Directors of the Company based upon
the price that would be paid by a willing buyer of the shares at issue, in a
sale process designed to maximize value and attract a reasonable number of
participants to provide a fair determination of such value.

                                       17

<PAGE>

          Section 4.3 Mechanics. In the event the Company issues or sells (or is
deemed to issue or sell) New Securities during any month, within five (5)
Business Days after the end of such month, the Company shall give each
Pre-Emptive Purchaser written notice of the issuance or sale, describing the
type of New Securities issued or sold, the date of the issuance or sale (or
deemed issuance or sale), the Proportionate Number of shares of Common Stock
that it may acquire as a result of the issuance or sale of such New Securities
and the aggregate purchase price payable by it upon exercise of its Pre-Emptive
Right (including relevant details as to the calculation of such purchase price).
The purchase price for each such share of Common Stock shall be equal to the
Closing Price of the Common Stock on the date of issuance or sale (or deemed
issuance or sale) of the corresponding New Security. Each Pre-Emptive Purchaser
shall exercise its Pre-Emptive Right (if at all) by delivering, within fifteen
(15) Business Days after the end of such month in which the New Securities were
issued or sold (or deemed to be issued or sold), (a) notice to the Company
stating therein the quantity of its Proportionate Number of shares of Common
Stock to be purchased and (b) payment to the Company of the aggregate purchase
price for such shares in immediately available funds. Any such exercise may be
for any or all of the Proportionate Number of shares set forth in the Company's
notice. Thereupon, the Company shall promptly issue and deliver such Pre-Emptive
Purchaser a certificate or certificates for the number of shares of Common Stock
that the Pre-Emptive Purchaser has elected to purchase. Notwithstanding the
foregoing, in the event that the Company shall notify a Pre-Emptive Purchaser in
writing that the Company intends to effect a public offering of any New
Securities in any manner or an offering under Rule 144A of the Securities Act
(which notice shall include the proposed maximum number of securities to be
offered and the estimated price range per share), such Pre-Emptive Purchaser
shall notify the Company within 72 hours after receipt of such notice as to such
Pre-Emptive Purchaser's election to participate as a purchaser in such offering
with respect to the number of shares of Common Stock in such offering, if any,
subject to such Pre-Emptive Purchaser's Pre-Emptive Rights. A Pre-Emptive
Purchaser's participation in such offering shall supersede any Pre-Emptive Right
with respect to the securities which are the subject of such offering, and in
the event a Pre-Emptive Purchaser elects not to participate as a purchaser in
such offering, such Pre-Emptive Purchaser shall not have any Pre-Emptive Right
with respect to the securities so offered.

          Section 4.4 Adjustments. The applicable purchase price and the
Proportionate Number shall be adjusted appropriately to reflect stock dividends,
combinations, splits, reclassifications, exchanges, substitutions or other
similar adjustments with respect to the Common Stock during the relevant month
that occur prior to the exercise of the applicable Pre-Emptive Right.

          Section 4.5 Transfer of Pre-Emptive Right. Subject to Section 4.6, all
or a portion of the Pre-Emptive Right set forth in this Article IV may be
transferred or assigned by Investor, only to a transferee or assignee of
Registrable Securities permitted under Article V hereof and only if (x) the
Company is given written notice prior to said transfer or assignment, stating
the name and address of such transferee or assignee and identifying the
securities with respect to which such Pre-Emptive Rights are being transferred
or assigned, (y) such transferee or assignee assumes in writing the obligations
of such Pre-Emptive Purchaser under this Agreement and (z) in the case of a
partial transfer, Investor retains a pro rata Pre-Emptive Right to the extent of
any Registrable Securities not transferred or assigned. Such pre-emptive rights
shall not otherwise be transferable, except for a Change of Control of Investor.

                                       18

<PAGE>

          Section 4.6 Termination of Pre-Emptive Right. The Pre-Emptive Right
granted under this Agreement shall terminate as to any Holder if Investor's
Voting Percentage is less than 10%.

          Section 4.7 Waiver of Pre-Emptive Rights and Anti-dilution
Adjustments. Investor hereby waives any Pre-Emptive Rights and anti-dilution
adjustment rights that may be triggered by the Aquila Sale and the consummation
of the transactions contemplated by the Securities Purchase Agreement, that it
may have pursuant to this Agreement, the Certificate of Designation (as defined
in the Securities Purchase Agreement), the Certificate of Designation with
respect to the Series A Preferred Stock acquired by Investor in the Aquila Sale,
or otherwise.

                                   ARTICLE V
                               TRANSFERS OF SHARES

          Section 5.1 Transfers. Except as otherwise expressly provided herein
and subject to applicable law, a Holder may, voluntarily or involuntarily,
directly or indirectly, sell, transfer, assign, donate, pledge or otherwise
encumber or dispose of any interest in all or any portion of the shares of
Voting Securities (a "Transfer") without restriction.

               (a)  Investor may, subject to the next sentence, transfer, in a
transaction or series of related transactions, shares constituting 15% or more
of the Voting Securities to any one transferee (including any Affiliates of such
transferee) only if (x) the Company is given written notice prior to said
transfer or assignment, stating the name and address of such transferee or
assignee and identifying the Voting Securities which are being transferred or
assigned and (y) such transferee or assignee assumes in writing the obligations
of the Investor under this Agreement. Any Transfer permitted by this Section 5.1
shall be exempt from the Stockholders' Rights Plan, provided that any transferee
that Beneficially Owns more than five percent of the Voting Securities prior to
such Transfer shall not as a result of such Transfer obtain Beneficial Ownership
of Voting Securities having a greater Voting Percentage than the Standstill
Amount. Nothing in this Section 5.1 is intended to limit (i) Investor's ability
to transfer shares in blocks smaller than 15%, (ii) transfers of shares in
connection with transfers by all stockholders of the Company or (iii) transfers
of shares pursuant to the registration rights granted under this Agreement;
provided, that any transferee of Shares comprising less than the Permitted
Transfer Percentage of the Voting Securities shall not receive any rights
granted by the Company to Investor pursuant to the terms of this Agreement,
including, without limitation, any registration rights pursuant to Article III
hereof or pre-emptive rights pursuant to Article IV hereof.

               (b)  Notwithstanding any other provision of this Agreement, no
Transfer of shares may be made by Investor unless such Transfer complies with
all applicable laws in addition to all applicable provisions of this Agreement.
An opinion of Investor's general counsel shall be satisfactory evidence that
such Transfer complies with all applicable securities laws in addition to all
applicable provisions of this Agreement.

          Section 5.2 Securities Laws; Assignment of Obligations. A Holder shall
not effect any Transfer until:

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<PAGE>

               (a)  There is then in effect a Registration Statement covering
such proposed disposition and such disposition is made in accordance with such
Registration Statement; or

               (b)  Such Holder shall have notified the Company of the proposed
disposition and shall have furnished the Company with a detailed statement of
the circumstances surrounding the proposed disposition, and if reasonably
requested by the Company, such Holder shall have furnished the Company with an
opinion of counsel, reasonably satisfactory to the Company, that such
disposition is exempt from registration under the Securities Act; provided
however, that it is agreed that the Company will not require opinions of
Holder's counsel for transactions made pursuant to Rule 144 except in unusual
circumstances as reasonably determined by the Company.

          Section 5.3 Permitted Transfers. A Holder may Transfer any portion of
the Common Stock or Preferred Stock to one or more transferees (other than to
any Competitor), subject to compliance with the provisions of Section 5.1 of
this Agreement and securities laws (and an opinion of Investor's counsel shall
be satisfactory evidence that such Transfer complies with all applicable
securities laws). In addition to a Holder's rights contained elsewhere herein,
including Section 5.1 hereof, a Holder may Transfer any portion of the Common
Stock or Preferred Stock: (i) to the Company; (ii) in response to a bona fide
public tender offer or exchange offer subject to Regulation 14D or Rule 13e-3 of
the rules and regulations promulgated under the Exchange Act for cash or other
consideration that is made by or on behalf of the Company; (iii) in response to
a Third Party Tender Offer with respect to which the Board of Directors of the
Company shall have recommended to the stockholders of the Company that they
accept such offer pursuant to Rule 14d-9 of the rules and regulations
promulgated under the Exchange Act and shall have not withdrawn such
recommendation prior to such Transfer; (iv) in connection with a Change in
Control of the Company that has received approval by the majority of the
directors of the Company's Board of Directors unaffiliated with Investor or (v)
in any general distribution of Registrable Securities to the limited partners of
Investor. Any attempted Transfer of any of the Preferred Stock or Common Stock
or Conversion Shares by Investor or any other person that is a party to this
Agreement that is not in compliance with the provisions of this Article V, shall
be null and void ab initio.

          Section 5.4 Legend.

               (a)  Each certificate representing Preferred Stock shall (unless
otherwise permitted by the provisions of this Agreement) be stamped or otherwise
imprinted with a legend substantially similar to the following (in addition to
any legend required under applicable state securities laws):

     THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
     AS AMENDED, OR ANY STATE SECURITIES LAWS. THEY MAY NOT BE SOLD OR OFFERED
     FOR SALE, PLEDGED, HYPOTHECATED OR OTHERWISE TRANSFERRED IN THE ABSENCE OF
     AN EFFECTIVE REGISTRATION STATEMENT AS TO THE SECURITIES UNDER SAID ACT AND
     ANY APPLICABLE STATE SECURITIES LAW OR UNLESS THE COMPANY HAS

                                       20

<PAGE>

     RECEIVED AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH
     REGISTRATION IS NOT REQUIRED TO EFFECTUATE SUCH TRANSACTION.

     THE SALE, TRANSFER OR PLEDGE OF THIS CERTIFICATE IS SUBJECT TO THE TERMS
     AND CONDITIONS OF A CERTAIN FIRST RESERVE INVESTOR'S RIGHTS AGREEMENT
     BETWEEN THE COMPANY AND CERTAIN HOLDERS OF ITS SECURITIES, AS THE SAME MAY
     BE AMENDED AND IN EFFECT FROM TIME TO TIME. COPIES OF SUCH AGREEMENT MAY BE
     OBTAINED UPON WRITTEN REQUEST TO THE SECRETARY OF THE COMPANY. THE SALE,
     TRANSFER OR PLEDGE OF THIS CERTIFICATE IS SUBJECT TO THE TERMS AND
     CONDITIONS OF THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF THE
     COMPANY, AS THE SAME MAY BE AMENDED AND IN EFFECT FROM TIME TO TIME. COPIES
     OF SUCH CERTIFICATE MAY BE OBTAINED UPON WRITTEN REQUEST TO THE SECRETARY
     OF THE COMPANY.

               (b) The Company shall be obligated to reissue promptly unlegended
certificates at the request of any Holder if the Holder shall have obtained an
opinion of counsel at such Holder's expense (which counsel may be counsel to the
Company) reasonably acceptable to the Company to the effect that the securities
proposed to be disposed of may lawfully be so disposed of under Rule 144(k) (or
any successor thereto or substantially equivalent exemption) without
registration, qualification or legend.

          Section 5.5 Improper Transfer. Any attempt to Transfer any Preferred
Stock that is not in accordance with this Agreement shall be null and void, and
the Company shall not give any effect to such attempted Transfer in the records
of the Company.

                                   ARTICLE VI
                              STANDSTILL PROVISIONS

          Section 6.1 Standstill. Subject to the provisions of Article V,
Investor will not, and will not assist or encourage any other Person (including
by providing financing) to, directly or indirectly through its Affiliates (other
than any actions otherwise prohibited by this Section 6.1 that are taken by an
officer and/or director of Investor serving on the Board of Directors of the
Company solely in his capacity as a member of the Board of Directors), (i)
acquire Beneficial Ownership of Voting Securities representing more, in the
aggregate, when taken together with any other Voting Securities of the Company
owned by such Person directly or indirectly through its Affiliates, than the
Standstill Amount, without the prior written consent of a majority of the
directors of the Company that were not appointed by Investor (provided that the
foregoing shall not impede (a) Investor's ability to transfer its Preferred
Stock, Common Stock or Conversion Shares as permitted by this Agreement,
exercise its Pre-Emptive Rights as permitted by this Agreement, convert shares
of Preferred Stock in accordance with the terms thereof or receive shares
pursuant to the provisions of Certificate of Designation in respect of the
Preferred Stock or pursuant to stock splits, dividends or any other transactions
in which Investor receives proportionate shares to other stockholders of the
Company or (b) any director's right to receive

                                       21

<PAGE>

compensation for serving as a director of the Company), (ii) engage in any
"solicitation" of "proxies" (as such terms are used in the proxy rules
promulgated under the Exchange Act), or form, join or in any way participate in
a "group" (as defined in Regulation 13D under the Exchange Act) with respect to
the capital stock of the Company, (iii) grant any proxies with respect to any
capital stock of the Company, other than in connection with a solicitation of
proxies by the Board of Directors, (iv) make any stockholder proposals in
respect of the Company, including but not limited to proposals (A) to nominate
directors to be elected at any annual or special meeting of the stockholders of
the Company (other than nominations that Investor is entitled to make under the
Company's Restated Certificate of Incorporation in its capacity as the holder of
Preferred Stock) or (B) to terminate (or redeem any rights granted under) the
Company's rights plan, or publicly comment on any proposal to amend or rescind
the Stockholders' Rights Plan that is not recommended for approval by the
Company's directors that are not affiliated with the Investor, (v) authorize or
make a tender offer, exchange offer or other offer to acquire Voting Securities,
(vi) deposit any Voting Securities in a voting trust or, except as otherwise
provided or contemplated herein or subject any Voting Securities to any
arrangement or agreement with any third party with respect to the voting of such
Voting Securities, (vii) act, along or in concert with others, directly or
indirectly, to publicly state its intention or desire to acquire the Company or
all or a material portion of assets of the Company, (viii) engage in a
transaction that would result in a Change of Control of the Company, (ix) enter
into any negotiations, agreements, arrangements or understandings with any
Person with respect to any of the foregoing, or (x) make any public proposals
with respect to any of the foregoing or make any public request to amend, modify
or rescind any provision of this Agreement, in each case without the prior
written consent of a majority of the directors of the Company that were not
appointed (pursuant to Article VII hereof) by, or affiliated with, Investor.

          Section 6.2 Third Party Offers.

               (a)  Investor shall have no obligation to support any third party
proposal to effect a business combination transaction with the Company or to
offer a transaction providing value to the Company's public shareholders
equivalent to that provided by any third party proposal, except in the following
circumstances:

                 (i) If a third party (an "Third Party Proposer") proposes a
bona fide business combination or other acquisition transaction to the Board of
Directors, then Investor shall have ten Business Days or such longer period as
the Board of Directors may determine (the "Topping Period") to offer an
alternative transaction that is, in the judgment of the Board of Directors
(after receipt of advice from a nationally recognized investment banking firm as
to the fairness from a financial point of view of the price offered), at least
as favorable from a financial point of view to the public shareholders of the
Company (a "Matching Proposal") as the best proposal theretofore made by the
Third Party Proposer. If Investor does not within the Topping Period make a
Matching Proposal, then Investor shall be obligated to support (including by
voting for or tendering into) such proposal of the Third Party Proposer if such
proposal is a Superior Proposal of the Third Party Proposer (or, in the event of
any subsequent Superior Proposal from a third party, to support the most
favorable transaction that is available to the Company from a financial point of
view, in the good faith judgment of the Board of Directors); provided, however,
that if the consideration offered in the Third Party Proposer's Superior
Proposal does not consist entirely of cash, then Investor shall not be obligated
to support the

                                       22

<PAGE>

proposed transaction with the Third Party Proposer, and may vote its shares of
Common Stock against such proposal (and will also have no obligation to make a
Matching Proposal), if any special committee of the Board of Directors does not
reconfirm, within five Business Days prior to the shareholder vote in respect of
the proposed transaction with the Third Party Proposer if there is one (or, if
not, within five days prior to the initial scheduled closing of a tender or
exchange offer) (based on market conditions prevailing at that time, including
the prices of the Acceptable Securities and any securities included in the best
offer made by Investor during the Topping Period), that the proposed transaction
with the Third Party Proposer continues to meet the standards required for a
Superior Proposal in comparison to the best offer made by Investor during the
Topping Period; provided, further, that in the event Investor does withdraw its
support for the proposed transaction with the Third Party Proposer in accordance
with this provision, Investor may not propose a business combination or Share
acquisition transaction to the Company for a period of six months (unless
permitted to do so by the Board of Directors). Any agreement with Investor or
with an Third Party Proposer providing for a transaction of the type described
in this Section 6.2(a)(i) shall include a "fiduciary out" provision allowing the
Company to comply with this Section 6.2(a)(i).

                  (ii) If Investor agrees to a merger, tender or exchange offer
or other business combination transaction with any party directly involving the
Company, or agrees to sell any of its shares of Common Stock or Preferred Stock
to one or more parties other than the Company in a transaction to which Section
5.3 applies (in either such case, such other parties are referred to as the
"Initial Buyer") and a third party Third Party Proposer proposes an alternative
transaction that the Board of Directors determines to be a Superior Proposal to
the transaction with the Initial Buyer, then the Company shall agree to such
Superior Proposal, and Investor shall not use its voting power to block such
Superior Proposal, but shall support (including by voting for or tendering into)
such Superior Proposal (or, in the event of any subsequent Superior Proposal
from a third party, to support the most favorable transaction that is available
to the Company from a financial point of view, in the good faith judgment of the
Board of Directors). Any agreement with an Initial Buyer providing for a
transaction of the type described in this Section 6.2(a)(ii) shall include a
"fiduciary out" provision allowing the Company to comply with this Section
6.2(a)(ii).

               (b)  "Superior Proposal" means a proposal (i) that is reasonably
capable of being consummated, (ii) in which all the consideration offered
consists entirely of any combination of at least fifty percent (50%) cash and
the remainder in Acceptable Securities and (iii) that the Board of Directors
considers, after receiving advice from a nationally recognized investment
banking firm, to be advisable and in the best interest of the Company and the
shareholders of the Company; provided, that for purposes of its advice to the
Board of Directors such investment bank shall have been instructed to view any
securities to be received by Investor in the transaction on a fully distributed
basis (that is, assuming that the prices to be received by Investor shall be
measured by the value that Investor would receive in connection with Investor
selling all of its securities as part of such distribution).

               (c)  "Acceptable Securities" means securities of a class that is
already listed and traded on a stock exchange or quoted and traded on NASDAQ and
that will be fully registered and capable of public distribution immediately
upon receipt by Investor.

                                       23

<PAGE>

          Section 6.3 After Acquired Securities. All of the provisions of this
Agreement shall apply to all capital stock of the Company now owned by, or which
may be issued or transferred hereafter to, Investor or any of its wholly-owned
subsidiaries in consequence of any additional issuance, purchase, exchange or
reclassification of any of such capital stock, corporate reorganization, or any
other form of recapitalization, consolidation, merger, share split or share
dividend, or which are acquired by Investor or any of its wholly-owned
subsidiaries pursuant to its Pre-Emptive Rights.

                                  ARTICLE VII
                              BOARD REPRESENTATION

          Section 7.1 Board Representation Rights. Investor shall have no rights
to designate directors to the Company's Board of Directors as a result of the
Tranche I Closing. Upon the receipt of any required approval of the purchase of
the Shares under the HSR Act or the termination or expiration of any applicable
waiting periods under the HSR Act, Investor shall have the right, pursuant to
this Article VII, to designate one (1) director to the Company's Board of
Directors. Upon the later of (i) the receipt of any required approval of the
purchase of the Shares under the HSR Act or the termination or expiration of any
applicable waiting periods under the HSR Act or (ii) the approval by the
Company's stockholders of the conversion rights of the Preferred Stock, Investor
shall have the right, pursuant to this Article VII, to designate two (2)
additional directors, for a total of three (3) director designees, to the
Company's Board of Directors. Notwithstanding the foregoing, if at any time
Investor's Voting Percentage falls below 10%, the rights of the holder(s) of the
Preferred Stock to designate any directors to the Company's Board of Directors
pursuant to this Article VII shall cease. Such rights shall not be returned to
the holder(s) of the Preferred Stock even if it acquires sufficient Preferred
Stock and/or Common Stock so that Investor's Voting Percentage again exceeds
10%.

          Section 7.2 Reduction of Board Representation Rights. Only after the
granting to Investor of the right to designate the two additional directors as
discussed in Section 7.1 above, shall the provisions of this Section 7.2 apply.
The directors of the Company designated by the Preferred Stock shall be elected
as follows:

               (a)  A majority of the outstanding shares of Preferred Stock and
the Conversion Shares (assuming, for purposes of this Section 7.2(a), that such
shares of Preferred Stock are then convertible) (to the extent permitted by
applicable law) held by Investor, voting exclusively and as a separate class,
shall be entitled to elect three of the total number of directors of the
Company, subject to the limitations set forth in subsections (b), (c) and (d)
below.

               (b)  In the event that Investor's Voting Percentage is equal to
or greater than 30%, then a majority of the outstanding shares of Preferred
Stock and the Conversion Shares (to the extent permitted by applicable law) held
by Investor, voting exclusively and as a separate class, shall be entitled to
elect three of the total number of directors of the Company. If at any time
Investor's Voting Percentage falls below 30%, the rights of the Preferred Stock
pursuant to this subsection shall cease. Such rights shall not be returned to
the Preferred Stock even if it acquires sufficient Preferred Stock and/or Common
Stock so that Investor's Voting Percentage again exceeds 30%.

                                       24

<PAGE>

               (c)    In the event that Investor's Voting Percentage is less
than 30% but equal to or greater than 20%, then a majority of the outstanding
shares of Preferred Stock and the Conversion Shares (to the extent permitted by
applicable law) held by Investor shall only be entitled (voting exclusively and
as a separate class) to elect two of the total number of directors of the
Company. If at any time Investor's Voting Percentage falls below 20%, the rights
of the Preferred Stock pursuant to this subsection shall cease. Such rights
shall not be returned to the Preferred Stock even if it acquires sufficient
Preferred Stock and/or Common Stock so that Investor's Voting Percentage again
exceeds 20%.

               (d)    In the event that Investor's Voting Percentage is less
than 20% but equal to or greater than 10%, then a majority of the outstanding
shares of Preferred Stock and the Conversion Shares (to the extent permitted by
applicable law) held by Investor shall only be entitled (voting exclusively and
as a separate class) to elect one of the total number of directors of the
Company. If at any time Investor's Voting Percentage falls below 10%, the rights
of the Preferred Stock pursuant to this subsection shall cease. Such rights
shall not be returned to the Preferred Stock even if it acquires sufficient
Preferred Stock and/or Common Stock so that Investor's Voting Percentage again
exceeds 10%.

               (e)    In the event that Investor's Voting Percentage is less
than 10%, then a majority of the outstanding shares of Preferred Stock and the
Conversion Shares (to the extent permitted by applicable law) held by Investor
shall have no right (voting exclusively and as a separate class) to elect any
directors to the Board of Directors.

               (f)    To the extent any nominee of the holders of the Preferred
Stock is not an officer of Investor, the Board of Directors of the Company shall
have the right to approve such nominee, such approval not to be unreasonably
withheld. Only the holders of the Preferred Stock and the Conversion Shares (to
the extent permitted by applicable law) shall be entitled to remove from office
such directors nominated by the holders of the Preferred Stock and the
Conversion Shares (to the extent permitted by applicable law) or to fill any
vacancy caused by the resignation, death or removal of such directors.

          Section 7.3 Information Rights. So long as Investor is entitled to
designate at least one director to the Company's Board of Directors, Investor
shall have a right (i) to receive all notices, reports and other communications
sent to the Company's directors at such time as they are transmitted to the
Company's directors and to receive reasonable notice of and to have one
representative attend, any meeting of the Board of Directors, (ii) consult with
and advise members of senior management of the Company and (iii) upon reasonable
notice, to have equivalent access to the books and records of the Company as
that generally afforded to the Company's directors.

          Section 7.4 Committee Membership. So long as Investor is entitled to
designate at least one director to the Company's Board of Directors, one of such
designees shall be a member of all committees of the Board of Directors unless
any applicable corporate governance rules and/or regulations require all members
of a particular committee to be independent.

                                       25

<PAGE>

                                  ARTICLE VIII
                                  MISCELLANEOUS

          Section 8.1 Communications. All notices and other communications
provided for or permitted hereunder shall be made in writing by telecopy,
courier service or personal delivery:

               (a)    if to a Holder, at the most current address given by such
Holder to the Company in accordance with the provisions of this Section 8.1,
which address initially is, with respect to Investor, the address set forth in
the Securities Purchase Agreement, and

               (b)    if to the Company, initially at its address set forth in
the Securities Purchase Agreement and thereafter at such other address, notice
of which is given in accordance with the provisions of this Section 8.1. All
such notices and communications shall be deemed to have been received at the
time delivered by hand, if personally delivered; when receipt acknowledged, if
telecopied; and when actually received, if sent by any other means.

          Section 8.2 Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors and assigns of each of the
parties, including subsequent holders of Registrable Securities as set forth in
Article V.

          Section 8.3 Counterparts. This Agreement may be executed in any number
of counterparts and by different parties hereto in separate counterparts, each
of which counterparts, when so executed and delivered, shall be deemed to be an
original and all of which counterparts, taken together, shall constitute but one
and the same Agreement.

          Section 8.4 Headings. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

          Section 8.5 Governing Law; Consent to Jurisdiction. This Agreement
will be construed in accordance with and governed by the laws of the State of
Delaware without regard to principles of conflicts of laws. Any judicial
proceedings with respect to this Agreement shall be brought in a federal or
state court located in the State of Delaware, and by execution and delivery of
this Agreement, each party submits, irrevocably and unconditionally, the
exclusive jurisdiction of such court and any related appellate court,
irrevocably agrees to be bound by any judgment rendered thereby, and waives any
objection to the laying of venue in any such proceedings in such courts. The
parties hereto agree that irreparable damage would occur in the event that any
of the provisions of this Agreement were not performed in accordance with their
specific terms or were otherwise breached. To the fullest extent permitted by
law, the parties hereto further agree that service of any process, summons,
notice or document by U.S. certified or registered mail to such party's address
for notices as set forth in Section 8.1 shall be effective service of process in
any action, suit or proceeding in the State of Delaware with respect to any
maters to which it has submitted to jurisdiction as set forth in the immediately
preceding sentence. It is accordingly agreed that the parties shall be entitled
to an injunction or injunctions, including preliminary relief, to prevent
breaches of this Agreement and to enforce specifically the terms and provisions
hereof, this being in addition to any other remedy to which they are entitled at
law or in equity. If any party shall institute any action or proceeding to
enforce the

                                       26

<PAGE>

provisions hereof, the party against whom such action or proceeding is brought
hereby waives any claim or defense therein that the plaintiff party has an
adequate remedy at law. The parties hereto hereby irrevocably and
unconditionally waive and agree not to plead or claim in any such court that any
such action, suit or proceeding brought in such court has been brought in an
inconvenient forum and waive, to the fullest extent permitted by law, all rights
to trial by jury in any action, proceeding or counterclaim (whether based upon
contract, tort or otherwise) arising out of or relating to this Agreement or any
of the transactions contemplated hereby.

          Section 8.6  Severability of Provisions. If any provision of this
Agreement is held to be illegal, invalid or unenforceable under any current or
future law, and if the rights or obligations of the parties under this Agreement
would not be materially and adversely affected thereby, such provision shall be
fully separable, and this Agreement shall be construed and enforced as if such
illegal, invalid or unenforceable provision had never comprised a part thereof,
and the remaining provisions of this Agreement shall remain in full force and
effect and shall not be affected by the illegal, invalid or unenforceable
provision or by its severance therefrom. In lieu of such illegal, invalid or
unenforceable provision, there shall be added simultaneously as a part of this
Agreement, a legal, valid and enforceable provision as similar in terms to such
illegal, invalid or unenforceable provision as may be possible, and the parties
thereto request the court or any arbitrator to whom disputes relating to this
Agreement are submitted to reform the otherwise illegal, invalid or
unenforceable provision in accordance with this Section 8.6.

          Section 8.7  Entire Agreement. This Agreement and the other Basic
Documents (as defined in the Securities Purchase Agreement) concurrently
executed and delivered by the Company and Investor, are intended by the parties
as a final expression of their agreement and intended to be a complete and
exclusive statement of the agreement and understanding of the parties hereto in
respect of the subject matter contained herein. There are no restrictions,
promises, warranties or undertakings, other than those set forth or referred to
herein with respect to the rights granted by the Company set forth herein. This
Agreement and such other Basic Documents supersede all prior agreements and
understandings between the parties with respect to such subject matter. Without
limiting the foregoing, to the extent that any provision in the Securities
Purchase Agreement is inconsistent with, or deals with the same subject matter
as, any provision of this Agreement, the Securities Purchase Agreement is hereby
superseded.

          Section 8.8  Attorneys' Fees. In any action or proceeding brought to
enforce any provision of this Agreement, the successful party shall be entitled
to recover reasonable attorneys' fees in addition to its costs and expenses and
any other available remedy.

          Section 8.9  Amendment. This Agreement may be amended only by means of
a written amendment signed by the Company and by Holders owning a majority of
the Registrable Securities.

          Section 8.10 Rights of Assignee. Subject to the provisions of Sections
3.10 and 4.5 and Article V hereof, the rights of an assignee under this Section
8.10 shall be the same rights granted to the assigning Holder under this
Agreement. In connection with any such assignment, the term "Holder" as used
herein shall, where appropriate to assign the rights and obligations of the
assigning Holder hereunder to such assignee, be deemed to refer to the assignee.

                                       27

<PAGE>

          Section 8.11 No Presumption. In the event any claim is made by a party
relating to any conflict, omission, or ambiguity in this Agreement, no
presumption or burden of proof or persuasion shall be implied by virtue of the
fact that this Agreement was prepared by or at the request of a particular party
or its counsel.

          Section 8.12 References to this Agreement. References to numbered or
lettered articles, section, and subsections refer to articles, sections, and
subsections, respectively, of this Agreement unless otherwise expressly stated.

          Section 8.13 Expenses. Each party to this Agreement shall bear its own
expenses incurred in connection with the transactions contemplated by this
Agreement, provided, however, that upon each of the Tranche I Closing and the
Tranche II Closing (each as defined in the Securities Purchase Agreement), and
upon the closing of any subsequent purchase of equity securities by Investor
directly from the Company, the Company shall reimburse Investor for all
reasonable fees and expenses incurred by Investor in connection therewith (and,
to effect such reimbursement, Investor shall be entitled to deduct such amount
from any proceeds to the Company in respect of such purchases.).

          Section 8.14 No Third Party Beneficiaries. Nothing contained in this
Agreement is intended to confer upon any Person other than the parties hereto
and their respective successors and permitted assigns, any benefit, right or
remedies under or by reason of this Agreement; provided, however, that the
parties hereto hereby acknowledge and agree that the indemnified parties
hereunder are third party beneficiaries of this Agreement.

                   REMAINDER OF PAGE INTENTIONALLY LEFT BLANK

                                       28

<PAGE>

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

                                QUANTA SERVICES, INC.,
                                a Delaware corporation

                                By:    /s/ Dana A. Gordon
                                     -------------------------------------------
                                Name:  Dana A. Gordon
                                Title: Vice President - General Counsel

                                FIRST RESERVE FUND IX, L.P.
                                By: First Reserve GP IX, L.P., General Partner
                                By: First Reserve G.P. IX, Inc., General Partner

                                By:    /s/ Thomas R. Denison
                                     -------------------------------------------
                                Name:  Thomas R. Denison
                                Title: Managing Director

                         SIGNATURE PAGE TO FIRST RESERVE
                           INVESTOR'S RIGHTS AGREEMENT<PAGE>

                                                                    EXHIBIT 10.3

                                 CONSENT LETTER

                  This Consent Letter is entered into this 15th day of October,
2002 by and among Quanta Services, Inc., a Delaware corporation (the "Company"),
Aquila, Inc., a Delaware corporation (the "Investor") and the other parties
hereto.

                  Reference is hereby made to (i) that certain Certificate of
Designation, Rights, and Limitations of the Series A Convertible Preferred Stock
of the Company dated September 21, 1999 (as amended and corrected from time to
time, the "Series A Certificate of Designation"), (ii) that certain Amended and
Restated Investor's Rights Agreement dated as of May 20, 2002 (the "IRA") by and
between the Company and the Investor and (iii) that certain Settlement and
Governance Agreement dated as of May 20, 2002 (the "Settlement Agreement") by
and between Company and the Investor. Capitalized terms used herein are used as
defined in the Settlement Agreement.

                  WHEREAS, the Investor is the Company's largest stockholder;

                  WHEREAS, the Company desires to sell and issue (the "Sale")
8,666,666 shares of its common stock, par value $0.00001 per share (the "Common
Stock"), and up to 2,430,741 shares of its Series E preferred stock, par value
$0.00001 per share (the "Series E Preferred Stock") (each share of which is
convertible into 10 shares of Common Stock), to First Reserve Fund IX, L.P., a
Delaware limited partnership ("First Reserve"), pursuant to the terms of that
certain Securities Purchase Agreement to be dated as of October 15, 2002 (the
"Securities Purchase Agreement") between the Company and First Reserve;

                  WHEREAS, in connection with the Sale, the Company desires to
enter into that certain First Reserve Investor's Rights Agreement with First
Reserve to be dated as of October 15, 2002 (the "First Reserve IRA") pursuant to
which the Company will grant to First Reserve, among other things, certain
registration rights and pre-emptive rights and First Reserve will agree to
certain restrictions on its ownership and transfer of the Common Stock and
Series E Preferred Stock;

                  WHEREAS, in connection with the issuance of the Series E
Preferred Stock, the Company shall designate a new series of preferred stock and
file a Certificate of Designation, Rights, and Limitations (the "Series E
Certificate of Designation", collectively with the Securities Purchase Agreement
and the First Reserve IRA, the "Transaction Documents") with the Secretary of
State of the State of Delaware setting forth the rights and privileges of the
Series E Preferred Stock;

                  WHEREAS, the Investor desires to sell 3,303,100 shares of
Common Stock and 939,380 shares of Series A convertible preferred stock, par
value $0.00001 per share (the "Series A Preferred Stock"), to First Reserve
pursuant to the terms of that certain Letter Agreement to be dated as of October
15, 2002 between Investor and First Reserve (the "Letter Agreement");

                  WHEREAS, the Investor has had an opportunity (i) to review the
Transaction Documents and any other materials it has deemed necessary to review
in order for it to grant its

<PAGE>

consents, waivers or agreements, as applicable, hereunder and (ii) to ask
questions of the management of the Company regarding the Sale and the
Transaction Documents; and

                  WHEREAS, the Investor desires to consent to certain actions of
the Company and waive certain of its rights in connection with the Sale and the
other transactions contemplated by the Transaction Documents.

                  NOW, THEREFORE, in consideration of the premises set forth
herein and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the Investor hereby agrees as
follows:

                  Notwithstanding any provisions set forth in the Series A
Certificate of Designation, the IRA or the Settlement Agreement (collectively,
the "Aquila Documents"), or any other rights or preferences that the Investor
may have, the Investor hereby represents and warrants that, prior to the
transactions contemplated by the Letter Agreement to be consummated
contemporaneously herewith, it owns all of the outstanding shares of Series A
Preferred Stock. Without limiting the foregoing, the Investor hereby:

                  (a)    consents to the designation of a class of Series E
                         Preferred Stock which shall rank pari passu with the
                         Series A Preferred Stock with respect to rights in
                         dividends and liquidation, dissolution and winding up,
                         and consents to any redemption obligations of the
                         Company in respect of the Series E Preferred Stock,
                         including, in each case, for purposes of Section 3 of
                         the Series A Certificate of Designation;

                  (b)    waives (and agrees, in connection with any transfer of
                         the Series A Preferred Stock, to obtain the written
                         waiver of the transferee of) any and all rights and
                         benefits in and to anti dilution adjustment provisions
                         set forth in Section 5 of the Series A Certificate of
                         Designation with respect to the issuance of the Common
                         Stock, the Series E Preferred Stock, the shares of
                         Common Stock issuable upon conversion of the Series E
                         Preferred Stock, the shares of Series E Preferred Stock
                         issuable as pay in kind dividends on the Series E
                         Preferred Stock and the shares of Common Stock issuable
                         upon conversion of any pay in kind dividends with
                         respect to the Series E Preferred Stock;

                  (c)    waives any and all rights and benefits in and to any
                         accrued and unpaid dividends that Investor may have (it
                         being agreed and understood that Investor makes no such
                         waiver in respect of First Reserve's, or any other
                         transferee's, right to such dividends), whether
                         declared or undeclared, with respect to any Series A
                         Preferred Stock being sold by the Investor to First
                         Reserve (the "Transferred Series A Shares") or any
                         shares of Common Stock issuable upon conversion of the
                         Transferred Series A Shares;

                  (d)    agrees to vote, at any special or annual meeting of the
                         Company's stockholders, its shares of the Company's
                         voting securities in favor of permitting the conversion
                         of the Series E Preferred Stock into Common Stock and
                         the corresponding issuance of Common Stock upon
                         conversion of the Series E Preferred Stock;

                                       2

<PAGE>

                  (e)    consents to and agrees that First Reserve shall have
                         the right to designate three directors to the Board of
                         Directors of the Company, subject to the limitations
                         set forth in the Series E Certificate of Designation,
                         and, to effect the foregoing, consents and agrees to
                         the increasing of the size of the Board of Directors of
                         the Company to up to twelve (12) members to the extent
                         required by the Securities Purchase Agreement or the
                         First Reserve IRA and for purposes of Section 3(c)(v)
                         of the Series A Certificate of Designation;

                  (f)    subject to the mutual agreement of First Reserve,
                         agrees that the Company's Board of Directors shall
                         consist of a majority of independent directors, and
                         notwithstanding anything to the contrary, the directors
                         designated by each of the undersigned and First Reserve
                         shall be deemed, and shall be treated as being, not
                         independent, and, to effect the foregoing, consents and
                         agrees to the increasing of the size of the Board of
                         Directors of the Company to up to 12 directors to the
                         extent required by the Securities Purchase Agreement or
                         the First Reserve IRA and for purposes of Section
                         3(c)(v) of the Series A Certificate of Designation;

                  (g)    consents to the registration rights granted in the
                         First Reserve IRA (including the priority thereof) and
                         to the dividends provided for in the Series E
                         Certificate of Designation; and

                  (h)    waives any preemptive rights it may have under the IRA
                         with respect to the Sale.

                  Investor, Everest Connections Corp. ("ECC"), Everest I
Engineering & Design LLC ("Everest I") and Everest Oklahoma LLC ("Everest
Oklahoma") agree to release and waive any claims, losses, suits, expenses,
indemnities, fees, warranties, back charges or other rights they, and their
affiliates and subsidiaries (collectively, the "Investor Parties"), have, had or
may have or assert against the Company, Par (as defined below) or Spalj (as
defined below, and collectively with the Company and Par, and their affiliates
and subsidiaries, the "Company Parties") with respect to any contracts,
agreements or other arrangements, whether written or oral, related to
construction services provided in connection with the overbuild of cable
television, telephony and internet systems in the Kansas City, Missouri,
Minneapolis, Minnesota and Tulsa, Oklahoma metropolitan areas (the "Covered
Matters"), including any such claims, losses, suits, expenses, indemnities,
fees, warranties, back charges or other rights arising under or related to the
following agreements: (i) Master Construction And Purchase Agreement between Par
Electrical Contractor, Inc. ("Par") and ECC, dated April 25, 2000; (ii) Standard
Provisions For Construction Contracts between Par and ECC, dated April 25, 2000;
(iii) Pole Attachment Make Ready Engineering/Planning Services Agreement between
Par and Everest I, dated October 9, 2000; (iv) Master Agreement between Spalj
Construction Company ("Spalj") and ECC, dated April 16, 2000; (v) Standard
Provisions For Construction Contracts between Spalj and ECC, dated April 16,
2000; (vi) Master Construction And Purchase Agreement between Par and Everest
Oklahoma, dated November 20, 2000; and (vii) Standard Provisions For
Construction Contracts between Par and Everest Oklahoma, dated November 20,
2000.

                  The consents, waivers and agreements set forth in this Consent
Letter are limited to the specific purposes for which they are granted and shall
not be construed as a consent,

                                       3

<PAGE>

waiver, forbearance or other modification with respect to any term, condition or
other provision of the Aquila Documents or any other document purporting to
grant certain rights to the Investor in respect of its ownership interests in
the Company. To give effect to the intent of this Consent Letter, Investor
agrees to take any such action and to execute any such documents as may be
reasonably necessary to carry out the provisions of this Consent Letter
(including any amendments, consents or waivers of, or under, the IRA, the Series
A Certificate of Designation and the Settlement Agreement).

                  In addition, Investor hereby irrevocably and unconditionally
constitutes and appoints James H. Haddox and John R. Colson, and each of them or
any of them, and any individual designated in writing by any of them, and each
of them individually, with full power of substitution and resubstitution, the
true and lawful attorneys in fact, agents and proxies, in accordance with
Delaware General Corporation Law, to vote at any special or annual meeting of
the Company's stockholders called for the purpose of approving the following
matters, and any and all adjournments or postponements thereof, all of its
shares of the Company's voting securities in favor of permitting the conversion
of the Series E Preferred Stock into Common Stock and the corresponding issuance
of Common Stock upon conversion of the Series E Preferred Stock. Investor
acknowledges that this appointment of proxies shall in all cases be subject to
the direction of the Special Committee of the Board of Directors of the Company.
Investor agrees that this proxy is coupled with an interest. The Investor hereby
revokes all other proxies and powers of attorney that it may have heretofore
appointed or granted and no subsequent proxy or power of attorney shall be
granted (and if granted, shall not be effective) by the Investor with respect to
its shares of Common Stock and Series A Preferred Stock, other than for the sole
purpose of voting its shares as contemplated hereby.

                  In consideration of the waivers and consents given by the
Investor Parties pursuant to this Consent Letter and in lieu of any cash
consideration, the Company Parties hereby agree to release and waive any claims,
losses, suits, expenses, indemnities, fees, warranties, back charges or other
rights the Company Parties have, had or may have or assert against the Investor
Parties with respect to any Covered Matters.

                  Delivery of an executed signature page to this Consent Letter
by telecopy shall be effective as delivery of a manually executed signature page
to this Consent Letter.

                            [signature page follows]

                                       4

<PAGE>

                  IN WITNESS WHEREOF, this Consent Letter has been duly executed
as of October 15, 2002.

                                            AQUILA, INC.

                                            By:   /s/ Keith G. Stamm
                                               --------------------------------

                                            Name:  Keith G. Stamm

                                            Title: Chief Operating Officer

<PAGE>

                                            EVEREST CONNECTIONS CORP.

                                            By:   /s/ Gregory S. Schlicht
                                               --------------------------------

                                            Name:  Gregory S. Schlicht

                                            Title: Assistant Secretary

<PAGE>

                                            EVEREST I ENGINEERING
                                            & DESIGN LLC

                                            By:   /s/ Gregory S. Schlicht
                                              --------------------------------

                                            Name:  Gregory S. Schlicht

                                            Title: Secretary

<PAGE>

                                            EVEREST OKLAHOMA LLC

                                            By:   /s/ Gregory S. Schlicht
                                               --------------------------------

                                            Name:  Gregory S. Schlicht

                                            Title: Secretary

<PAGE>

                                        QUANTA SERVICES, INC.

                                        By:   /s/ Dana A. Gordon
                                           ------------------------------------

                                        Name:  Dana A. Gordon

                                        Title: Vice President - General Counsel

<PAGE>

                                            SPALJ CONSTRUCTION COMPANY

                                            By:   /s/ Dana A. Gordon
                                               --------------------------------

                                            Name:  Dana A. Gordon

                                            Title: Vice President

<PAGE>

                                            PAR ELECTRICAL CONTRACTORS, INC.

                                            By:   /s/ Dana A. Gordon
                                               --------------------------------

                                            Name:  Dana A. Gordon

                                            Title: Vice President

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