GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

    GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER FOR THE PAYEE
(YOU) TO GIVE THE PAYER.--Social Security numbers have nine digits separated by
two hyphens: i.e., 000-00-0000. Employer identification numbers have nine digits
separated by only one hyphen: i.e., 00-0000000. The table below will help
determine the number to give the payer. All "Section" references are to the
Internal Revenue Code of 1986, as amended. "IRS" is the Internal Revenue
Service.



                                                 GIVE THE SOCIAL SECURITY
FOR THIS TYPE OF ACCOUNT:                        NUMBER OF--
- -------------------------                        ------------------------
                                           
                   1.   Individual               The individual

                   2.   Two or more individuals  The actual owner of the
                        (joint account)          account or, if combined
                                                 funds, the first
                                                 individual on the
                                                 account(1)

                   3.   Custodian account of a   The minor(2)
                        minor (Uniform Gift to
                        Minors Act)

                   4.   a. The usual revocable   The grantor-trustee(1)

                        b. So-called trust       The actual owner(1)
                        account that is not a
                           legal or valid trust
                           under state law

                   5.   Sole proprietorship      The owner(3)




                                                 GIVE THE SOCIAL SECURITY
FOR THIS TYPE OF ACCOUNT:                        NUMBER OF--
- -------------------------                        ------------------------
                                           

                   6.   Sole proprietorship      The owner(3)

                   7.   A valid trust, estate,   The legal entity(4)
                        or pension trust

                   8.   Corporate                The corporation

                   9.   Association, club,       The organization
                        religious, charitable,
                        educational, or other
                        tax-exempt organization

                  10.   Partnership              The partnership

                  11.   A broker or registered   The broker or nominee
                        nominee

                  12.   Account with the         The public entity
                        Department of
                        Agriculture in the name
                        of a public entity
                        (such as a state or
                        local government,
                        school district, or
                        prison) that receives
                        agricultural program
                        payments


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

(1) List first and circle the name of the person whose number you furnish. If
    only one person on a joint account has a social security number, that
    person's number must be furnished.

(2) Circle the minor's name and furnish the minor's social security number.

(3) You must show your individual name, but you may also enter your business or
    "doing business as" name. You may use either your social security number of
    your employer identification number (if you have one).

(4) List first and circle the name of the legal trust, estate, or pension trust.
    (Do not furnish the taxpayer identification number of the personal
    representative or trustee unless the legal entity itself is not designated
    in the account title).

NOTE: IF NO NAME IS CIRCLED WHEN THERE IS MORE THAN ONE NAME LISTED, THE NUMBER
WILL BE CONSIDERED TO BE THAT OF THE FIRST NAME LISTED.

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
                                     PAGE 2

OBTAINING A NUMBER

    If you don't have a taxpayer identification number, obtain Form SS-5,
Application for a Social Security Administration office, or Form SS-4,
Application for Employer Identification Number, by calling 1 (800) TAX-FORM, and
apply for a number.

PAYEES EXEMPT FROM BACKUP WITHHOLDING

    PAYEES SPECIFICALLY EXEMPTED FROM THE WITHHOLDING INCLUDE

    - An organization exempt from tax under Section 501(a), an individual
      retirement Account (IRA), or a custodial account under Section 403(b)(7),
      if the account satisfies the requirements of Section 401(f)(2).

    - The United States or a state thereof, the District of Columbia, a
      possession of the United States, or a political subdivision or
      wholly-owned agency or instrumentality of any of the foregoing.

    - An international organization or any agency or instrumentality thereof.

    - A foreign government and any political subdivision, agency or
      instrumentality thereof.

    PAYEES THAT MAY BE EXEMPT FROM BACKUP WITHHOLDING INCLUDE:

    - A corporation.

    - A financial institution.

    - A dealer of securities or commodities required to register in the United
      States, the District of Columbia, a possession of the United States.

    - A real estate investment trust.

    - A common trust fund operated by a bank under Section 584(a).

    - An entity registered at all times during the tax year under the Investment
      Company Act of 1940.

    - A middleman known in the investment community as a nominee or who is
      listed in the most recent publication of the American Society of Corporate
      Secretaries, Inc. Nominee List.

    - A foreign central bank.

    PAYEES OF DIVIDENDS AND PATRONAGE DIVIDENDS GENERALLY EXEMPT FROM BACKUP
WITHHOLDING INCLUDE:

    - Payments to nonresident aliens subject to withholding under Section 1441.

    - Payments to partnerships not engaged in a trade or business in the United
      States and that have at least one nonresident alien partner.

    - Payments of patronage dividends not paid in money.

    - Payments made by certain foreign organizations.

    - Section 404(k) payments made by an ESOP.

    PAYEES OF INTEREST GENERALLY EXEMPT FROM BACKUP WITHHOLDING INCLUDE:

    - Payments of tax-exempt interest (including exempt-interest dividends under
      Section 852).

    - Payments described in Section 6049(b)(5) to nonresident aliens.

    - Payments on tax-free covenant bonds under Section 1451.

    - Payments made by certain foreign organizations.

    CERTAIN PAYMENTS, OTHER THAN PAYMENTS OF INTEREST, DIVIDENDS, AND PATRONAGE
DIVIDENDS, THAT ARE EXEMPT FROM INFORMATION REPORTING ARE ALSO EXEMPT FROM
BACKUP WITHHOLDING. FOR DETAILS, SEE SECTIONS 6041, 6041A, 6042, 6044, 6045,
60049, 6050A AND 6050N AND THE REGULATIONS THEREUNDER.

    EXEMPT PAYEES SHOULD COMPLETE A SUBSTITUTE FORM W-9 TO AVOID POSSIBLE
ERRONEOUS BACKUP WITHHOLDING. FURNISH YOUR TAXPAYER IDENTIFICATION NUMBER, WRITE
"EXEMPT" ON THE FORM, SIGN AND DATE THE FORM AND RETURN IT TO THE PAYER.

    PRIVACY ACT NOTICE.--Section 6019 requires you to provide your correct
taxpayer identification number to payers who must report the payments to the
IRS. The IRS uses the numbers for identification purposes and to help verify the
accuracy of your return and may also provide this information to various
government agencies for tax enforcement or litigation purposes. Payers must be
given the numbers whether or not recipients are required to file tax returns.
Payers must generally withhold 31% of taxable interest, dividend, and certain
other payments to a payee who does nor furnish a taxpayer identification number
to a payer. Certain penalties may also apply.

PENALTIES

    (1) FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUM-BER.--If you fail to
furnish your taxpayer identification number to a payer, you are subject to a
penalty of $50 for each such failure unless your failure is due to reasonable
cause and not willful neglect.

    (2) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING.--If you
make a false statement with no reasonable basis that results in no backup
withholding you are subject to a $500 penalty.

    (3) CRIMINAL PENALTY FOR FALSIFYING INFORMATION.--Willfully falsifying
certifications or affirmations may subject you to criminal penalties including
fines and/or imprisonment.

 FOR ADDITIONAL INFORMATION CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
                                    SERVICE