Document:

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                                                                  EXHIBIT 10.57

                             TERMINATION AGREEMENT

     This TERMINATION AGREEMENT (this "Amendment") is made this 9th day of
August, 2000, by and among ZEFER Corp., a Delaware corporation (the "Company"),
GTCR Fund VI, L.P., a Delaware limited partnership ("GTCR Fund VI"), GTCR VI
Executive Fund, L.P., a Delaware limited partnership ("Executive Fund"), GTCR
Associates VI, a Delaware general partnership ("Associates Fund"), GTCR Capital
Partners, L.P., a Delaware limited partnership ("GTCR Capital"), and GTCR Golder
Rauner, L.L.C. ("Golder Rauner").  GTCR Fund VI, Executive Fund and Associates
Fund are collectively referred to herein as the "Purchasers" and individually as
a "Purchaser."

     WHEREAS, the Company and the Purchasers are parties to that certain
Purchase Agreement, dated as of March 23, 1999 (as amended and modified from
time to time) (the "Purchase Agreement"); and

     WHEREAS, the Company and the Purchasers and certain stockholders of the
Company are parties to that certain Amended and Restated Stockholders Agreement,
dated as of May 26, 2000 (as amended and modified from time to time) (the
"Stockholders Agreement"); and

     WHEREAS, the Company and Golder Rauner are parties to that certain
Professional Services Agreement, dated as of March 23, 1999 (as amended and
modified from time to time) (the "Services Agreement"); and

     WHEREAS, the parties hereto wish to clarify that the Purchase Agreement,
the Stockholders Agreement and the Services Agreement shall terminate upon the
closing (the "Closing") of the Company's initial public offering of its common
stock pursuant to an effective registration statement under the Securities Act
of 1933 (the "IPO");

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

     1.   The Purchase Agreement, and the rights and obligations of each party
thereto, shall terminate effective upon the Closing.

     2.   The Stockholders Agreement, and the rights and obligations of each
party thereto, shall terminate effective upon the Closing.

     3.   The Services Agreement, and the rights and obligations of each party
thereto, shall terminate effective upon the Closing.  The parties hereto confirm
that no placement fees will be payable by the Company to GTCR in connection with
the IPO.

     4.   Subject to the Closing, the parties hereto hereby mutually release and
forever discharge each other, and their respective employees, officers,
directors, agents, attorneys, successors, subsidiaries, and affiliates from any
and all liabilities, obligations, disputes, suits, causes of action and all
other claims of every kind and nature which they now have or ever had
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which arise out of or in connection with the Purchase Agreement, the
Stockholders Agreement and the Services Agreement. The parties hereto further
agree and acknowledge that there are no amounts due or payable pursuant to any
other party pursuant to the terms of the Purchase Agreement, the Stockholders
Agreement or the Services Agreement.

     5.   This Agreement may be executed in two or more counterparts, each of
which shall for all purposes be deemed to be an original and all of which shall
constitute the same instrument.

                 [Remainder of Page Intentionally Left Blank]
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     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed on the day and year first above written.

                              ZEFER CORP.

                              By: /s/ Sean W. Mullaney
                                  --------------------
                              Its: Executive Vice President

                              GTCR GOLDER RAUNER, L.L.C.

                              By: /s/ Philip A. Canfield
                                  ----------------------
                              Its: Principal

                              GTCR FUND VI, L.P.

                              By:  GTCR Partners VI, L.P.
                              Its: General Partner

                              By:  GTCR Golder Rauner, LLC
                              Its: General Partner

                              By: /s/ Philip A. Canfield
                                  ----------------------
                              Its: Principal

                    Signature Page to Termination Agreement
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                              GTCR VI EXECUTIVE FUND, L.P.

                              By:  GTCR Partners VI, L.P.
                              Its: General Partner

                              By:  GTCR Golder Rauner, L.L.C.
                              Its: General Partner

                              By: /s/ Philip A. Canfield
                                  ----------------------
                              Its: Principal

                              GTCR ASSOCIATES VI

                              By:  GTCR Partners VI, L.P.
                              Its: Managing General Partner

                              By:  GTCR Golder Rauner, L.L.C.
                              Its: General Partner

                              By  /s/ Philip A. Canfield
                                  ----------------------
                              Its: Principal

                              GTCR CAPITAL PARTNERS, L.P.

                              By:  GTCR Mezzanine Partners, L.P.
                              Its: General Partner

                              By:  GTCR Partners VI, L.P.
                              Its: General Partner

                              By:  GTCR Golder Rauner, L.L.C.
                              Its: General Partner

                              By:  /s/ Philip A. Canfield
                                   ----------------------
                              Its: Principal

                    Signature Page to Termination Agreement<PAGE>

                                                                   Exhibit 10.62

                   AMENDED AND RESTATED REGISTRATION AGREEMENT
                   -------------------------------------------

     THIS AMENDED AND RESTATED REGISTRATION AGREEMENT (this "Agreement") is made
as of May 26, 2000 by and among (i) ZEFER Corp., a Delaware corporation (the
"Company"), (ii) Citizens Financial Group, Inc., a Delaware corporation (the
"Class B Holder"), (iii) the parties listed under the Heading "Investors" on
Schedule A hereto (each, an "Investor" and collectively, the "Investors"), (iv)
the parties listed under the heading "Executives" on Schedule A and any
executive employee of the Company who, at any time, acquires securities of the
Company in accordance with Section 8 hereof and executes a counterpart of this
Agreement or otherwise agrees to be bound by this Agreement (each, an
"Executive" and collectively, the "Executives"), and (v) each of the other
entities and individuals listed under the heading "Other Stockholders" on
Schedule A attached hereto or any other party that, at any time, executes a
counterpart of this Agreement or otherwise agrees to be bound by this Agreement.

     The Company and the Class B Holder are parties to a Class B Convertible
Stock Purchase Agreement of even date herewith (the "Purchase Agreement").  In
order to induce Class B Holder to enter into the Purchase Agreement, the Company
has agreed to provide the registration rights set forth in this Agreement.  The
execution and delivery of this Agreement is a condition to the Closing under the
Purchase Agreement.

     The Company and the Investors entered into a Purchase Agreement dated March
23, 1999, as amended or modified from time to time, for the purchase of Common
Stock and Class A Preferred Stock (the "Class A Purchase Agreement").

     The Company, the Investors, William A. Seibel and the parties listed under
the heading "Other Stockholders" on Schedule A are parties to that certain
Registration Agreement dated as of March 23, 1999, as amended on November 24,
1999 (the "Original Registration Agreement").

     The Company, the Investors, the Executives and the parties listed under the
heading "Other Stockholders" on Schedule A wish to amend and restate the
Original Registration Agreement in order to make the Class B Holder party
thereto and effect certain other changes thereto.

     The parties hereto agree as follows:

     1. Demand Registrations.

        (a) Requests for Registration. At any time, the holders of a majority of
the Investor Registrable Securities may request registration under the
Securities Act of all or any portion of their Registrable Securities having an
aggregate offering price of at least $5,000,000 (based on the then current
market price or fair value at the time of such request) on Form S- 1 or any
similar long-form registration ("Long-Form Registrations"), or on Form S-2 or
S-3 or any similar short-form registration ("Short-Form Registrations") if
available. All registrations requested pursuant to this Section 1(a) are
referred to herein as "Demand Registrations". Each request for a Demand
Registration shall specify the approximate number of Registrable Securities
requested to be registered and the anticipated per share price range for such
offering.
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Within ten days after receipt of any such request, the Company shall give
written notice of such requested registration to all other holders of
Registrable Securities and shall include in such registration all Registrable
Securities with respect to which the Company has received written requests for
inclusion therein within 15 days after the receipt of the Company's notice.

        (b) Investor Long-Form Registrations. The holders of Investor
Registrable Securities shall be entitled to request an unlimited number of
Long-Form Registrations in which the Company shall pay all Registration Expenses
(as defined in Section 5) ("Company-paid Long-Form Registrations"). All Long-
Form Registrations shall be underwritten registrations.

        (c) Investor Short-Form Registrations. In addition to the Long-Form
Registrations provided pursuant to Section 1 (b), the holders of Investor
Registrable Securities shall be entitled to request an unlimited number of
Short-Form Registrations in which the Company shall pay all Registration
Expenses. Demand Registrations shall be Short-Form Registrations whenever the
Company is permitted to use any applicable short form. After the Company has
become subject to the reporting requirements of the Securities Exchange Act, the
Company shall use its best efforts to make Short-Form Registrations on Form S-3
available for the sale of Registrable Securities.

        (d) Priority on Demand Registration. The Company shall not include in
any Demand Registration any securities which are not Registrable Securities
without the prior written consent of the holders of a majority of the
Registrable Securities included in such registration. If a Demand Registration
is an underwritten offering and the managing underwriters advise the Company in
writing that in their opinion the number of Registrable Securities and, if
permitted hereunder, other securities requested to be included in such offering
exceeds the number of Registrable Securities and other securities, if any, which
can be sold in an orderly manner in such offering within a price range
acceptable to the holders of a majority of the Registrable Securities to be
included in such registration therein, the Company shall include in such
registration prior to the inclusion of any securities which are not Registrable
Securities the number of Registrable Securities requested to be included which
in the opinion of such underwriters can be sold in an orderly manner within the
price range of such offering, pro rata among the respective holders thereof on
the basis of the amount of Registrable Securities owned by each such holder.

        (e) Restrictions on Long-Form Registrations. The Company shall not be
obligated to effect any Long-Form Registration within 90 days after the
effective date of a previous Long-Form Registration or a previous registration
in which the holders of Registrable Securities were given piggyback rights
pursuant to Section 2 and in which there was no reduction in the number of
Registrable Securities requested to be included. The Company may postpone for up
to 180 days the filing or the effectiveness of a registration statement for a
Demand Registration if the Company and the holders of a majority of the
Registrable Securities agree that such Demand Registration would reasonably be
expected to have a material adverse effect on any proposal or plan by the
Company or any of its Subsidiaries to engage in any acquisition of assets (other
than in the ordinary course of business) or any merger, consolidation, tender
offer, reorganization or similar transaction; provided however, that in such
event, the holders of Registrable Securities initially requesting such Demand
Registration shall be entitled to withdraw such request and the Company shall
pay all Registration Expenses in connection

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with such registration. The Company may delay a Demand Registration hereunder
only once in any twelve-month period.

        (f) Selection of Underwriters. The holders of a majority of the
Registrable Securities included in any Demand Registration shall have the right
to select the investment banker(s) and manager(s) to administer the offering.

        (g) Other Registration Rights. Except as provided in this Agreement, the
Company shall not grant to any Persons the right to request the Company to
register any equity securities of the Company, or any securities convertible or
exchangeable into or exercisable for such securities, without the prior written
consent of the holders of a majority of the Registrable Securities.

     2. Piggyback Registrations.

        (a) Right to Piggyback. Whenever the Company proposes to register any of
its securities under the Securities Act (other than (i) pursuant to a Demand
Registration, (ii) in connection with an initial public offering of the
Company's equity securities, or (iii) in connection with registrations on form
S-8 or any successor form) and the registration form to be used may be used for
the registration of Registrable Securities (a "Piggyback Registration"), the
Company shall give prompt written notice to all holders of Registrable
Securities of its intention to effect such a registration and shall include in
such registration all Registrable Securities with respect to which the Company
has received written requests for inclusion therein within 20 days after the
receipt of the Company's notice.

        (b) Piggyback Expenses. The Registration Expenses of the holders of
Registrable Securities shall be paid by the Company in all Piggyback
Registrations.

        (c) Priority on Primary Registrations. If a Piggyback Registration is an
underwritten primary registration on behalf of the Company, and the managing
underwriters advise the Company in writing that in their opinion the number of
securities requested to be included in such registration exceeds the number
which can be sold in an orderly manner in such offering within a price range
acceptable to the Company, the Company shall include in such registration (i)
first, the securities the Company proposes to sell, (ii) second, the Registrable
Securities requested to be included in such registration, pro rata among the
holders of such Registrable Securities on the basis of the number of shares
owned by each such holder, and (iii) third, other securities requested to be
included in such registration.

        (d) Priority on Secondary Registrations. If a Piggyback Registration is
an underwritten secondary registration on behalf of holders of the Company's
securities (other than holders of Registrable Securities; it being understood
that secondary registrations on behalf of holders of Registrable Securities are
addressed in Section I above rather than this Section 2(d)), and the managing
underwriters advise the Company in writing that in their opinion the number of
securities requested to be included in such registration exceeds the number
which can be sold in an orderly manner in such offering within a price range
acceptable to the holders of a majority of the Registrable Securities to be
included in such registration, the Company shall include in such registration
(i) first, the securities requested to be included therein by the holders
requesting

                                      -3-
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such registration, (ii) second, the Registrable Securities requested to be
included in such registration, pro rata among the holders of such Registrable
Securities on the basis of the number of shares owned by each such holder, and
(iii) third, other securities requested to be included in such registration.

        (e) Selection of Underwriters. If any Piggyback Registration is an
underwritten offering, the selection of investment banker(s) and manager(s) for
the offering must be approved by the holders of a majority of the Registrable
Securities included in such Piggyback Registration. Such approval shall not be
unreasonably withheld.

        (f) Other Registrations. If the Company has previously filed a
registration statement with respect to Registrable Securities pursuant to
Section 1 or pursuant to this Section 2, and if such previous registration has
not been withdrawn or abandoned, the Company shall not file or cause to be
effected any other registration of any of its equity securities or securities
convertible or exchangeable into or exercisable for its equity securities under
the Securities Act (except on Form S-8 or any successor form), whether on its
own behalf or at the request of any holder or holders of such securities, until
a period of at least 180 days has elapsed from the effective date of such
previous registration.

     3. Holdback Agreements.

        (a) Each holder of Registrable Securities and each officer and director
of the Company shall not effect any public sale or distribution (including sales
pursuant to Rule 144) of equity securities of the Company, or any securities
convertible into or exchangeable or exercisable for such securities, during the
seven days prior to and the 180-day period beginning on the effective date of
any underwritten Demand Registration, any underwritten Piggyback Registration in
which Registrable Securities are included (except as part of such underwritten
registration), or the initial public offering, unless the underwriters managing
the registered public offering otherwise agree.

        (b) The Company (i) shall not effect any public sale or distribution of
its equity securities, or any securities convertible into or exchangeable or
exercisable for such securities, during the seven days prior to and during the
180-day period beginning on the effective date of any underwritten Demand
Registration or any underwritten Piggyback Registration (except as part of such
underwritten registration or pursuant to registrations on Form S-8 or any
successor form), unless the underwriters managing the registered public offering
otherwise agree, and (ii) shall cause each holder of its Common Stock, or any
securities convertible into or exchangeable or exercisable for Common Stock,
purchased from the Company at any time after the date of this Agreement (other
than in a registered public offering) to agree not to effect any public sale or
distribution (including sales pursuant to Rule 144) of any such securities
during such period (except as part of such underwritten registration, if
otherwise permitted), unless the underwriters managing the registered public
offering otherwise agree. Notwithstanding the foregoing, clause (ii) of this
Section 3(b) shall not apply to any holder of the Company's Common Stock and/or
any securities convertible into or exchangeable or exercisable for Common Stock,
if such Person holds less than 1% of the Company's Common Stock on a fully
diluted basis.

                                      -4-
<PAGE>

        4. Registration Procedures. Whenever the holders of Registrable
Securities have requested that any Registrable Securities be registered pursuant
to this Agreement, the Company shall use its reasonable best efforts to effect
the registration and the sale of such Registrable Securities in accordance with
the intended method of disposition thereof, and pursuant thereto the Company
shall be as expeditious as possible:

        (a) prepare and file with the Securities and Exchange Commission a
registration statement with respect to such Registrable Securities and use its
reasonable best efforts to cause such registration statement to become effective
(provided that before filing a registration statement or prospectus or any
amendments or supplements thereto, the Company shall furnish to one counsel
selected by the holders of a majority of the Registrable Securities covered by
such registration statement copies of all such documents proposed to be filed,
which documents shall be subject to the review and comment of such counsel);

        (b) notify each holder of Registrable Securities of the effectiveness of
each registration statement filed hereunder and prepare and file with the
Securities and Exchange 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 a period of not less
than 180 days and comply with the provisions of the Securities Act with respect
to the disposition of all securities covered by such registration statement
during such period in accordance with the intended methods of disposition by the
sellers thereof set forth in such registration statement;

        (c) furnish to each seller of Registrable Securities such number of
copies of such registration statement, each amendment and supplement thereto,
the prospectus included in such registration statement (including each
preliminary prospectus) and such other documents as such seller may reasonably
request in order to facilitate the disposition of the Registrable Securities
owned by such seller;

        (d) use its reasonable best efforts to register or qualify such
Registrable Securities under such other securities or blue sky laws of such
jurisdictions as any seller reasonably requests and do any and all other acts
and things which may be reasonably necessary or advisable to enable such seller
to consummate the disposition in such jurisdictions of the Registrable
Securities owned by such seller (provided that the Company shall not be required
to (i) qualify generally to do business in any jurisdiction where it would not
otherwise be required to qualify but for this subparagraph, (ii) subject itself
to taxation in any such jurisdiction or (iii) consent to general service of
process in any such jurisdiction);

        (e) notify each seller of such Registrable Securities, 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 included
in such registration statement contains an untrue statement of a material fact
or omits any fact necessary to make the statements therein not misleading, and,
at the request of the holders of a majority of the Registrable Securities
covered by such registration statement, the Company shall prepare a supplement
or amendment to such prospectus so that, as thereafter delivered to the
purchasers of such Registrable Securities, such prospectus shall not contain an
untrue statement of a material fact or omit to state any fact necessary to make
the statements therein not misleading;

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        (f) cause all such Registrable Securities to be listed on each
securities exchange on which similar securities issued by the Company are then
listed and, if not so listed, to be listed on the NASD automated quotation
system and, if listed on the NASD automated quotation system, use its best
efforts to secure designation of all such Registrable Securities covered by such
registration statement as a NASDAQ "national market system security" within the
meaning of Rule 11Aa2-1 of the Securities and Exchange Commission or, failing
that, to secure NASDAQ authorization for such Registrable Securities;

        (g) provide a transfer agent and registrar for all such Registrable
Securities not later than the effective date of such registration statement;

        (h) enter into such customary agreements (including underwriting
agreements in customary form) and take all such other actions as the holders of
a majority of the Registrable Securities being sold or the underwriters, if any,
reasonably request in order to expedite or facilitate the disposition of such
Registrable Securities (including effecting a stock split or a combination of
shares);

        (i) otherwise use its commercially reasonable best efforts to comply
with all applicable rules and regulations of the Securities and Exchange
Commission, and make available to its security holders, as soon as reasonably
practicable, an earnings statement covering the period of at least twelve months
beginning with the first day of the Company's first full calendar quarter after
the effective date of the registration statement, which earnings statement shall
satisfy the provisions of Section 11(a) of the Securities Act and Rule 158
thereunder;

        (j) in the event of the issuance of any stop order suspending the
effectiveness of a registration statement, or of any order suspending or
preventing the use of any related prospectus or suspending the qualification of
any common stock included in such registration statement for sale in any
jurisdiction, the Company shall use its reasonable best efforts promptly to
obtain the withdrawal of such order;

        (k) use its commercially reasonable best efforts to cause such
Registrable Securities covered by such registration statement to be registered
with or approved by such other governmental agencies or authorities as may be
necessary to enable the sellers thereof to consummate the disposition of such
Registrable Securities; and

        (l) in connection with any underwritten public offering, obtain a cold
comfort letter from the Company's independent public accountants in customary
form and covering such matters of the type customarily covered by cold comfort
letters addressed to the underwriters of such offering.

     5. Registration Expenses.

        (a) All expenses incident to the Company's performance of or compliance
with this Agreement, including without limitation all registration and filing
fees, expenses and fees of compliance with securities or blue sky laws, printing
expenses, messenger and delivery expenses, fees and disbursements of custodians,
and fees and disbursements of counsel for the Company and all independent
certified public accountants, underwriters (excluding discounts

                                      -6-
<PAGE>

and commissions) and other Persons retained by the Company (all such expenses
being herein called "Registration Expenses"), shall be borne as provided in this
Agreement, except that the Company shall, in any event, pay its internal
expenses (including, without limitation, all salaries and expenses of its
officers and employees performing legal or accounting duties), the expense of
any annual audit or quarterly review, the expense of any liability insurance and
the expenses and fees for listing the securities to be registered on each
securities exchange on which similar securities issued by the Company are then
listed or on the NASD automated quotation system.

        (b) In connection with each Demand Registration and each Piggyback
Registration, the Company shall reimburse the holders of Registrable Securities
included in such registration for the reasonable fees and disbursements of one
counsel chosen by the holders of a majority of the Registrable Securities
included in such registration.

        (c) To the extent Registration Expenses are not required to be paid by
the Company, each holder of securities included in any registration hereunder
shall pay those Registration Expenses allocable to the registration of such
holder's securities so included, and any Registration Expenses not so allocable
shall be borne by all sellers of securities included in such registration in
proportion to the aggregate selling price of the securities to be so registered.

     6. Indemnification.

        (a) The Company agrees to indemnify, to the extent permitted by law,
each holder of Registrable Securities, its officers and directors and each
Person who controls such holder (within the meaning of the Securities Act)
against all losses, claims, damages, liabilities and expenses caused by any
untrue or alleged untrue statement of material fact contained in any
registration statement, prospectus or preliminary prospectus or any amendment
thereof or supplement thereto or any omission or alleged omission of a material
fact required to be stated therein or necessary to make the statements therein
not misleading, except insofar as the same are caused by or contained in any
information furnished in writing to the Company by such holder expressly for use
therein or by such holder's failure to deliver a copy of the registration
statement or prospectus or any amendments or supplements thereto after the
Company has furnished such holder with a sufficient number of copies of the
same. In connection with an underwritten offering, the Company shall indemnify
such underwriters, their officers and directors and each Person who controls
such underwriters (within the meaning of the Securities Act) to the same extent
as provided above with respect to the indemnification of the holders of
Registrable Securities.

        (b) In connection with any registration statement in which a holder of
Registrable Securities is participating, each such holder will furnish to the
Company in writing such information and affidavits as the Company reasonably
requests for use in connection with any such registration statement or
prospectus and, to the full extent permitted by law, shall indemnify the
Company, its directors and officers and each Person who controls the Company
(within the meaning of the Securities Act) against any losses, claims, damages,
liabilities and expenses resulting from any untrue or alleged untrue statement
of material fact contained in the registration statement, prospectus or
preliminary prospectus or any amendment thereof or supplement thereto or any
omission or alleged omission of a material fact required to be stated therein or
necessary to make the statements therein not misleading, but only to the extent
that

                                      -7-
<PAGE>

such untrue statement or omission is contained in any information or affidavit
so furnished in writing by such holder; provided that the obligation to
indemnify will be individual, not joint and several, for each holder and shall
be limited to the net amount of proceeds received by such holder from the sale
of Registrable Securities pursuant to such registration statement.

        (c) Any Person entitled to indemnification hereunder will (i) give
prompt written notice to the indemnifying party of any claim with respect to
which it seeks indemnification (provided that the failure to give prompt notice
shall not impair any Person's right to indemnification hereunder to the extent
such failure has not prejudiced the indemnifying party) and (ii) unless in such
indemnified party's reasonable judgment a conflict of interest between such
indemnified and indemnifying parties may exist with respect to such claim,
permit such indemnifying party to assume the defense of such claim with counsel
reasonably satisfactory to the indemnified party. If such defense is assumed,
the indemnifying party will not be subject to any liability for any settlement
made by the indemnified party without its consent (but such consent will not be
unreasonably withheld). An indemnifying party who is not entitled to, or elects
not to, assume the defense of a claim will not be obligated to pay the fees and
expenses of more than one counsel for all parties indemnified by such
indemnifying party with respect to such claim, unless in the reasonable judgment
of any indemnified party a conflict of interest may exist between such
indemnified party and any other of such indemnified parties with respect to such
claim.

        (d) The indemnification provided for under this Agreement shall remain
in full force and effect regardless of any investigation made by or on behalf of
the indemnified party or any officer, director or controlling Person of such
indemnified party and shall survive the transfer of securities. The Company also
agrees to make such provisions, as are reasonably requested by any indemnified
party, for contribution to such party in the event the Company's indemnification
is unavailable for that reason.

        7. Participation in Underwritten Registrations. No Person may
participate in any registration hereunder which is underwritten unless such
Person (i) agrees to sell such Person's securities on the basis provided in any
underwriting arrangements approved by the Person or Persons entitled hereunder
to approve such arrangements and (ii) completes and executes all questionnaires,
powers of attorney, indemnities, underwriting agreements and other documents
reasonably required under the terms of such underwriting arrangements; provided
that no holder of Investor Registrable Securities included in any underwritten
registration shall be required to make any representations or warranties to the
Company or the underwriters (other than representations and warranties regarding
such holder, such holder's title to such shares and such holder's intended
method of distribution) or to undertake any indemnification obligations to the
Company or the underwriters with respect thereto, except as otherwise provided
in Section 6 hereof.

        8. Additional Stockholders. In connection with the issuance of any
additional equity securities of the Company, the Company, with the consent of
the holders of a majority of the Registrable Securities, may permit such person
to become a party to this Agreement and succeed to all of the rights and
obligations of an "Other Stockholder" under this Agreement by obtaining an
executed counterpart signature page to this Agreement, and, upon such execution,
such person shall for all purposes be an "Other Stockholder" party to this
Agreement.

                                      -8-
<PAGE>

     9. Definitions.

        (a) "Class B Preferred" means any shares of the Company's Class B
Convertible Preferred Stock, $0.01 par value per share.

        (b) "Investor Registrable Securities" means (i) any Common Stock issued
to the Investors pursuant to the Class A Purchase Agreement (whether issued
before, on or after the date hereof), (ii) any Common Stock issued or issuable
to the Class B Holder upon the conversion of any Class B Preferred issued to the
Class B Holder pursuant to the Purchase Agreement (whether issued before, on or
after the date hereof) and (iii) any other Common Stock issued or issuable
directly or indirectly with respect to the securities referred to in clauses (i)
and (ii) above by way of a stock dividend or stock split or in connection with
an exchange or combination of shares, recapitalization, merger consolidation or
other reorganization.

        (c) "Executive Registrable Securities" means any shares of Common Stock
held as of the date hereof, or acquired hereafter from the Company or another
Stockholder, by the Executives.

        (d) "Other Stockholder Registrable Securities" means any shares of
Common Stock held as of the date hereof, or acquired hereafter from the Company,
by the Other Stockholders.

        (e) "Registrable Securities" means the Investor Registrable Securities,
the Executive Registrable Securities and the Other Stockholder Registrable
Securities. As to any particular Registrable Securities, such securities shall
cease to be Registrable Securities when they (i) have been distributed to the
public pursuant to an offering registered under the Securities Act or sold to
the public through a broker, dealer or market maker in compliance with Rule 144
under the Securities Act (or any similar rule then in force), (ii) have been
distributed to the limited partners of any of the Investors unless the
respective Investor otherwise elects, (iii) have been effectively registered
under a registration statement, including, without limitation, a registration
statement on Form S-8 (or any successor form), or (iv) have been repurchased by
the Company. For purposes of this Agreement, a Person shall be deemed to be a
holder of Registrable Securities whenever such Person has the right to acquire
such Registrable Securities (upon conversion or exercise in connection with a
transfer of securities or otherwise, but disregarding any restrictions or
limitations upon the exercise of such right), whether or not such acquisition
has actually been effected; provided that this sentence shall not apply to
shares of Common Stock issuable upon the exercise of unvested options originally
issued to employees or former employees of the Company.

        (f) Unless otherwise stated, other capitalized terms contained herein
have the meanings set forth in the Class A Purchase Agreement.

10.  Miscellaneous.

        (a) No Inconsistent Agreements. The Company shall not hereafter enter
into any agreement with respect to its securities which is inconsistent with or
violates the rights granted to the holders of Registrable Securities in this
Agreement.

                                      -9-
<PAGE>

        (b) Adjustments Affecting Registrable Securities. The Company shall not
take any action, or permit any change to occur, with respect to its securities
which would adversely affect the ability of the holders of Registrable
Securities to include such Registrable Securities in a registration undertaken
pursuant to this Agreement or which would adversely affect the marketability of
such Registrable Securities in any such registration (including, without
limitation, effecting a stock split or a combination of shares).

        (c) Remedies. Any Person having rights under any provision of this
Agreement shall be entitled to enforce such rights specifically to recover
damages caused by reason of any breach of any provision of this Agreement and to
exercise all other rights granted by law. The parties hereto agree and
acknowledge that money damages may not be an adequate remedy for any breach of
the provisions of this Agreement and that any party may in its sole discretion
apply to any court of law or equity of competent jurisdiction (without posting
any bond or other security) for specific performance and for other injunctive
relief in order to enforce or prevent violation of the provisions of this
Agreement.

        (d) Amendments and Waivers. Except as, otherwise provided herein, the
provisions of this Agreement may be amended or waived only upon the prior
written consent of the Company and holders of at least a majority of the
Registrable Securities.

        (e) Successors and Assigns. All covenants and agreements in this
Agreement by or on behalf of any of the parties hereto shall bind and inure to
the benefit of the respective successors and assigns of the parties hereto
whether so expressed or not. In addition, whether or not any express assignment
has been made, the provisions of this Agreement which are for the benefit of
purchasers or holders of Registrable Securities are also for the benefit of, and
enforceable by, any subsequent holder of Registrable Securities. Notwithstanding
anything in this Section 10(e) to the contrary, the covenants, agreements and
provisions of this Agreement which are for the benefit of purchasers or holders
of Registrable Securities shall not be for the benefit of or enforceable by any
successor, assignee or subsequent holder of the Company's Common Stock if such
Person holds less than 1% of the Company's outstanding shares of Common Stock.

        (f) Severability. Whenever possible, each provision of this Agreement
shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be prohibited
by or invalid under applicable law, such provision shall be ineffective only to
the extent of such prohibition or invalidity, without invalidating the remainder
of this Agreement.

        (g) Counterparts. This Agreement may be executed simultaneously in two
or more counterparts, any one of which need not contain the signatures of more
than one party, but all such counterparts taken together shall constitute one
and the same Agreement.

        (h) Descriptive Headings. The descriptive headings of this Agreement are
inserted for convenience only and do not constitute a part of this Agreement.

        (i) Governing Law. The laws of Delaware shall govern all issues
concerning the relative rights of the Company and its stockholders and all other
questions concerning the

                                      -10-
<PAGE>

construction, validity and interpretation of this Agreement, without giving
effect to any choice of law or other conflict of law provision or rule (whether
of the State of Delaware or any other jurisdiction) that would cause the
application of the laws of any jurisdiction other than the State of Delaware.

        (j) Notices. All notices, demands or other communications to be given or
delivered under or by reason of the provisions of this Agreement shall be in
writing and shall be deemed to have been given when delivered personally to the
recipient, sent to the recipient by reputable overnight courier service (charges
prepaid) or mailed to the recipient by certified or registered mail, return
receipt requested and postage prepaid. Such notices, demands and other
communications shall be sent to each Investor and to each Executive at the
addresses indicated on the Schedule of Stockholders and to the Company at the
address of its corporate headquarters or to such other address or to the
attention of such other person as the recipient party has specified by prior
written notice to the sending party.

        (k) Termination of Original Registration Agreement. The Original
Registration Agreement is hereby terminated in its entirety and is of no further
force or effect.

                                *  *  *  *  *

                                      -11-
<PAGE>

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

                              ZEFER CORP.

                              By:  /s/ Sean W. Mullaney
                                  --------------------------
                              Its:  Executive Vice President, General Counsel
                                    and Sercetary

                              CITIZENS FINANCIAL GROUP, INC.

                              By: /s/ Hal Tovin
                                  --------------------------
                                  Name:  Hal Tovin
                                  Title: Group Executive Vice President

                              INVESTORS:

                              GTCR FUND VI, L.P.

                              By:   GTCR Partners VI, L.P.
                              Its:   General Partner

                              By:   GTCR Golder Rauner, L.L.C.
                              Its:   General Partner

                              By: /s/ Philip A. Canfield
                                  --------------------------
                              Name: Philip A. Canfield
                                   -------------------------
                              Its: Principal

                              GTCR VI EXECUTIVE FUND, L.P.

                              By:   GTCR Partners VI, L.P.
                              Its:   General Partner

                              By:   GTCR Golder Rauner, L.L.C.
                              Its:   General Partner

                              By: /s/ Philip A. Canfield
                                  --------------------------
                              Name: Philip A. Canfield
                                   -------------------------
                              Its: Principal

                                      -12-
<PAGE>

                              GTCR ASSOCIATES VI

                              By:   GTCR Partners VI, L.P.
                              Its:   Managing General Partner

                              By:  GTCR Golder Rauner, L.L.C.
                              Its:   General Partner

                              By: /s/ Philip A. Canfield
                                  --------------------------
                              Name: Philip A. Canfield
                                   -------------------------
                              Its: Principal

                              OTHER STOCKHOLDER:

                              GTCR CAPITAL PARTNERS, L.P.

                              By:   GTCR Mezzanine Partners, L.P.
                              Its:   General Partner

                              By:  GTCR Partners VI, L.P
                              Its:   General Partner

                              By:  GTCR Golder Rauner, L.L.C.
                              Its:   General Partner

                              By: /s/ Philip A. Canfield
                                  --------------------------
                              Name: Philip A. Canfield
                                   -------------------------
                              Its: Principal

                              EXECUTIVE:

                               /s/ William A. Seibel
                              ------------------------------
                              William Seibel

        SIGNATURE PAGE TO THE AMENDED AND RESTATED REGISTRATION AGREEMENT

                                      -13-
<PAGE>

                                   SCHEDULE A
                                   ----------

     Investors                   Executives              Other Stockholders
     ---------                   ----------              ------------------
GTCR Fund VI, L.P.               William Seibel      GTCR Capital Partners, L.P.

GTCR VI Executive Fund Fund,     Anthony K. Tjan     Matthew P. Burkley
 L.P.

GTCR Associates VI               Thomas J. Waite     Ian R. Colliety

1261417 Ontario Limited          David A. Lubin      Stephen R. DiMarco

Renaissance Worldwide, Inc.                          Deborah E. Frieze

                                                     Edmond C. Jay

                                                     Alexandre Scherer

                                                     Kaming Ng

                                                     Anthony K. Tjan

                                                     Gregory S. Hipwell

                                                     Jason J. Zada

                                                     Allan L. Cohen

                                                     Fred Luconi

                                                     Chris Bannon

                                                     James Cofano

                                                     Joan Walls

                                      -14-

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