Document:

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                                                                   Exhibit 10.12

                              AGREEMENT AND RELEASE

            This AGREEMENT AND RELEASE (this "Agreement"), made as of the 25th
day of July, 1999, by and among Bausch & Lomb, Incorporated, a New York
corporation ("B&L"), CRL Holdings, Inc., a Delaware corporation ("CRL Holdings")
and             (the "Employee").

                                   WITNESSETH:

            WHEREAS, B&L and the Employee have entered into that certain letter
agreement dated February 8, 1999 (the "Retention Agreement"), which Retention
Agreement, provides, among other matters, for the payment by B&L of certain
amounts to the Employee in connection with the consummation of the transactions
contemplated by the Recapitalization Agreement dated as of the date hereof (the
"Recapitalization Agreement") by and among B&L, Endosafe, Inc., CRL Holdings,
Charles River Laboratories, Inc., SPAFAS, Inc., B&L International, Inc.,
Wilmington Partners, L.P., B&L Canada, Inc., CRL Acquisition LLC and DLJ
Merchant Banking Partners II, L.P.. Capitalized terms used herein but not
otherwise defined herein shall have the meanings ascribed to such terms in the
Recapitalization Agreement; and

            WHEREAS, B&L and CRL Holdings desire to reaffirm certain of the
agreements of B&L contained in the Retention Agreement and otherwise terminate
the Retention Agreement and enter into this Agreement on the terms and
conditions set forth herein.

            NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements herein set forth, the parties hereto, intending to be
legally bound, hereby agree as follows:

                                    ARTICLE 1

                                AGREEMENTS OF B&L

            1.1 Agreements of B&L. B&L hereby agrees that on or before the
Closing Date (i) B&L shall pay to the Employee the Employee's portion of the EVA
Bonus Bank payable to all employees of the Celtics Business and (ii) B&L shall
either, at B&L's election and subject to the approval of the Committee on
Management of the Board of Directors of B&L, (a) pay to the Employee the fair
market value (i.e. the average of the closing sales prices of B&L's common stock
as reported on the New York Stock Exchange for the twenty (20) Business Days
preceding the Closing Date less the applicable stock option exercise price(s))
of the Employee's unvested B&L stock options and grants (the "Amount") or (b)
accelerate the vesting of the foregoing options and grants to the Closing Date
as of the Closing Date. Notwithstanding the foregoing, in the event that the
Committee on Management of the Board of Directors of B&L fails to approve the
matters set forth in clause (ii)(a) above and B&L determines not to effect the
matters set forth in clause (ii)(b) above, on or before the Closing Date, B&L
shall pay CRL Holdings, and CRL Holdings shall, immediately after the Closing
Date, pay to the Employee, the Amount.

                                    ARTICLE 2

                           AGREEMENTS OF CRL HOLDINGS

            2.1 Agreements of CRL Holdings.

            (a) In the event that the Employee's employment is terminated at any
time prior to the first anniversary of the Closing Date by CRL Holdings for any
reason other than Cause, CRL Holdings hereby agrees to pay to the Employee a
severance benefit for a period of     ( ) years following the date of
termination the Employee's base salary in effect on the date of termination,
payable in periodic installments in accordance with the
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                                       -1-

standard payroll practices of CRL Holdings. All other employee severance
benefits shall remain consistent with the CRL Holdings (formerly CRL) severance
policy and will continue until the first to occur of (i) the termination of the
period of severance pay provided for herein or (ii) until the Employee gains
other employment

            (b) (i) immediately prior to the Closing, CRL Holdings shall pay to
the Employee an amount equal to the six month pro rata portion of Employee's
1999 bonus under the Charles River Executive Incentive Compensation Plan (the
"ICP") for the first two fiscal quarters of 1999, calculated on the basis of
actual business unit performance through June 26, 1999 and (ii) immediately
after the Closing, CRL Holdings shall pay to the Employee an amount equal to the
three month pro rata portion of Employee's 1999 bonus under the ICP, calculated
on the basis of target performance for the quarter ended September 25, 1999. Any
adjustments to the payment identified in the foregoing subclause (ii) based upon
actual business unit performance shall be reflected in Employee's final EICP
bonus calculation and payout for fiscal year end 1999.

            (c) Amounts paid pursuant to this Section 2.1 shall be characterized
as "Compensation" under the Charles River Executive Supplemental Life Insurance
Retirement Plan for benefits calculation purposes thereunder.

            2.2 Definitions.

            (a) For purposes hereof, "Cause" shall be defined as fraud,
violence, theft, gross misconduct, discrimination or harassment or actions of
malicious intent which directly compromise the Employee's role or
accountabilities.

            (b) For purposes hereof, "terminated" shall include your refusal of
an employment position offered by CRL Holdings or one of its affiliates because
(i) there is a material diminution in job assignment as defined by level,
responsibility or compensation; or (ii) the proposed job assignment requires
relocation outside the current area of employment.

                                    ARTICLE 3

                             RELEASE AND TERMINATION

            3.1 Release. In consideration of the agreements contained in
Articles 1 and 2 hereof, which agreements constitute consideration being
provided to the undersigned for the execution of this Release and to which the
undersigned is not already entitled, the Employee hereby releases B&L, CRL
Holdings, CRL Acquisition LLC, Recap Co and the Recap Subsidiaries, and each of
their respective current and former officers, directors, employees,
stockholders, subsidiaries and other affiliates (collectively, the "Releasees"),
from all claims, actions, causes of action, suits, debts, dues, sums of money,
accounts, covenants, contracts, controversies, agreements, promises, damages,
judgments, executions and demands whatsoever, in law or equity, which the
undersigned ever had, now has or hereafter can, shall or may have against the
Releasees or any of them arising out of or relating to the Retention Agreement.
The undersigned agrees never directly or indirectly to commence or prosecute, or
assist in the filing, commencement or prosecution of any action, proceeding or
charge against the Releasees or any of them arising out of or relating to the
Retention Agreement.

            3.2 Termination of Retention Agreement. Subject to Section 3.3
below, the Retention Agreement is hereby terminated effective as of the Closing
Date, and neither party hereto shall have any continuing or further obligations
under the Retention Agreement.

            3.3 Effectiveness of Release. Notwithstanding anything to the
contrary contained herein, Sections 3.1 and 3.2 shall become effective only upon
the receipt by the Employee of the payments set forth in clauses (i) and (ii)(a)
of Section 1.1 (or in lieu of the payments contemplated by such clause (ii)(a),
the benefits of clause (ii)(b) of Section 1.1 or the payments contemplated by
the last sentence of Section 1.1), and subparagraph (b) of Section 2.1.

                                    ARTICLE 4

                               GENERAL PROVISIONS

            4.1 Notices. All notices and other communications in connection with
this Agreement and the transactions contemplated hereunder shall be in writing
and shall be either telecopied, delivered personally, delivered by reputable
overnight courier or mailed by certified mail, return receipt requested, postage
pre-paid, to the recipient at such recipient's address as shall from time to
time be specified by the recipient. All such notices shall be effective and
deemed received upon delivery, if delivered by hand; three days after deposit in
the mail, postage prepaid, if mailed; upon receipt, in the case of telecopy or
sent by overnight courier. Each

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                                       -2-

notice, request, instruction or document shall bear the date on which it is
delivered or mailed. Notice may be given by attorneys on behalf of the parties.

            4.2 Entire Agreement. Amendment This Agreement and the documents
referred to herein contain the entire agreement between the parties hereto with
respect to the transactions contemplated hereby, and no amendment or
modification hereof shall be effective unless in writing and signed by the party
against which it is sought to be enforced.

            4.3 Assignment. This Agreement and the rights, duties and
obligations of any party hereunder may not be transferred or assigned without
the prior written consent of the other parties hereto except to the Employee's
heirs, legal representatives, administrators or executors, and any assignment in
violation of this Section 4.3 shall be null and void.

            4.4 Further Assurances. Each of the parties hereto shall use such
party's best efforts to take such actions as may be necessary or reasonably
requested by the other party hereto to carry out and consummate the transactions
contemplated by this Agreement.

            4.5 Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the State of New York applicable to agreements
made and to be performed entirely within such State, without regard to any
conflict of laws principles which would apply the laws of any other
jurisdiction.

            4.6 Article and Section Headings. The article and section headings
in this Agreement are inserted solely for convenience of reference and are not a
part of and are not intended to govern, limit or aid in the construction of any
term or provision hereof.

            4.7 Waiver. The waiver of any covenant, condition or duty hereunder
by either party must be in writing and shall not prevent that party from later
insisting upon full performance of the same.

            4.8 Counterparts. This Agreement may be executed in counterparts
(including by telecopy), each of which shall be deemed an original, and both of
which taken together shall constitute one and the same instrument.

                               *        *        *
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            IN WITNESS WHEREOF, the parties hereto have caused this Agreement
and Release to be duly executed as of the date first above written.

                                           BAUSCH & LOMB, INCORPORATED

                                           By:
                                               Name:
                                               Title:

                                           CRL HOLDINGS, INC.

                                           By:
                                               Name:
                                               Title:

                                           Employee:<PAGE>

                                                                     EXHIBIT 4.1

                    [CERTIFICATE BORDER LOGO APPEARS HERE]

[NUMBER LOGO APPEARS HERE]                            [SHARES LOGO APPEARS HERE]
           SN1
     COMMON STOCK                                             COMMON STOCK

                                                            SEE REVERSE FOR
                                                          CERTAIN DEFINITIONS

                                                           CUSIP 86211E 10 3
                     [STORAGE NETWORKS LOGO APPEARS HERE]

                      Storage Services for the e-Economy

                             StorageNetworks, Inc.
             Incorporated Under the Laws of the State of Delaware

   This is to Certify that                                  is the owner of

          FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK,
                         PAR VALUE $.01 PER SHARE, OF

StorageNetworks, Inc. (hereinafter called the "Corporation") transferable on the
books of the Corporation by the holder of record hereof in person or by duly
authorized attorney upon surrender of this Certificate properly endorsed or
assigned.
   This Certificate and the shares represented hereby are issued and held
subject to the laws of the State of Delaware and the Restated Certificate of
Incorporation and By-laws of the Corporation, as from time to time amended
(copies of which are on file with the Corporation), to all of which the holder,
by acceptance hereof, assents.
   This Certificate is not valid until countersigned and registered by the
Transfer Agent and Registrar.
   WITNESS the facsimile seal of the Corporation and the facsimile signatures of
its duly authorized officers.

Dated:

                [STORAGENETWORKS CORPORATE SEAL APPEARS HERE]

/s/ Peter W. Bell                          /s/ Paul C. Flanagan

PRESIDENT AND CHIEF EXECUTIVE OFFICER      TREASURER AND CHIEF FINANCIAL OFFICER

                              Countersigned and Registered:
                              American Stock Transfer and Trust Company

                              TRANSFER AGENT AND REGISTRAR

                              By________________

                              AUTHORIZED SIGNATURE

<PAGE>

                             STORAGENETWORKS, INC.

     The Corporation has more than one class of stock. The Corporation will
furnish without charge to each stockholder upon written request a copy of the
full text of the preferences, voting powers, qualifications and special and
relative rights of the shares of each class of stock and any series thereof.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

TEN COM  - as tenants in common            UNIF GIFT
TEN ENT  - as tenants by the entireties    MIN ACT  - ........Custodian.........
JT TEN   - as joint tenants with right                 (Cust)           (Minor)
           of survivorship and not as
           tenants in common                          under Uniform Gifts to
                                                      Minors Act................
                                                                    (State)

    Additional abbreviations may also be used though not in the above list.

    For value received, _______________ hereby sell, assign and transfer unto

 PLEASE INSERT SOCIAL SECURITY
  OR OTHER IDENTIFYING NUMBER
         OF ASSIGNEE
------------------------------

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PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

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------------------------------------------------------------------------- Shares
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
                                   ---------------------------------------------

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Attorney to transfer the said stock on the books of the within-named Corporation
with full power of substitution in the premises.

Dated,
       --------------------

                 NOTICE: -------------------------------------------------------
                         THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH
                         THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE,
                         IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT,
                         OR ANY CHANGE WHATEVER.

SIGNATURE(S) GUARANTEED:
                         -------------------------------------------------------
                         THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
                         GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND
                         LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
                         AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM),
                         PURSUANT TO S.E.C. RULE 17Ad-15.

     Keep this certificate in a safe place. If it is lost, stolen or destroyed
the Corporation may require a bond of indemnity as a condition to the issuance
of a replacement certificate.

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