<PAGE>
GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
NUMBER ON SUBSTITUTE FORM W-9
Guidelines for Determining the Proper Identification Number 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.
<TABLE>
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Give the TAXPAYER
IDENTIFICATION
For this type of account: NUMBER of--
-----------------------------------------------
<S> <C> <C>
1. An individual's The individual
account
2. Two or more The actual owner of
individuals (joint the account or, if
account) combined funds, the
first individual on
the account(1)
3. Custodian account of The minor(2)
a minor (Uniform
Gift to Minors Act)
4. a. The usual The
revocable savings grantor-trustee(1)
trust (grantor is
also trustee)
b. So-called trust
account that is The actual owner(1)
not a legal or
valid trust under
state law.
5. Sole proprietorship The owner(3)
6. A valid trust, The legal entity (Do
estate, or pension not furnish the
trust identifying number
of the personal
representative or
trustee unless the
legal entity itself
is not designated in
the account
title.)(4)
-----------------------------------------------
Give the TAXPAYER
IDENTIFICATION
For this type of account: NUMBER of--
<S> <C> <C>
-----------------------------------------------
7. Corporate account The corporation
8. Religious, The organization
charitable, or
educational
organization account
9. Partnership account The partnership
10. Association, club, The organization
or other tax-exempt
organization
11. A broker or The broker or
registered 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
</TABLE>
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(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) Show your individual name. You may also enter your business or "doing
business as" name. You may use either your social security number or your
employer identification number (if you have one).
(4) List first and circle the name of the legal trust, estate, or pension trust.
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.
<PAGE>
GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
NUMBER ON SUBSTITUTE FORM W-9
Page 2
Note: Section references are to the Internal Revenue Code unless otherwise
noted.
Obtaining a Number
If you do not have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for a Social Security Number Card (for
individuals), or Form SS-4, Application for Employer Identification Number (for
businesses and all other entities), at the local office of the Social Security
Administration or the Internal Revenue Service (the "IRS") and apply for a
number.
Payees and Payments Exempt from Backup Withholding
The following is a list of payees exempt from backup withholding and for which
no information reporting is required. For interest and dividends, all listed
payees are exempt except item (9). For broker transactions, payees listed in
items (1) through (13) and a person registered under the Investment Advisors Act
of 1940 who regularly acts as a broker are exempt. Payments subject to reporting
under sections 6041 and 6041A are generally exempt from backup withholding only
if made to payees described in items (1) through (7), except a corporation
(other than certain hospitals described in Regulations section 1.6041-3(c)) that
provides medical and health care services or bills and collects payments for
such services is not exempt from backup withholding or information reporting.
Only payees described in items (1) through (5) are exempt from backup
withholding for barter exchange transactions and patronage dividends.
(1) An organization exempt from tax under section 501(a), or an IRA, or a
custodial account under section 403(b)(7), if the account satisfies the
requirements of section 401(f)(2).
(2) The United States or any of its agencies or instrumentalities.
(3) A state, the District of Columbia, a possession of the United States, or any
of their political subdivisions or instrumentalities.
(4) A foreign government or any of its political subdivisions, agencies or
instrumentalities.
(5) An international organization or any of its agencies or instrumentalities.
(6) A corporation.
(7) A foreign central bank of issue.
(8) A dealer in securities or commodities required to register in the United
States, the District of Columbia or a possession of the United States.
(9) A futures commission merchant registered with the Commodity Futures Trading
Commission.
(10) A real estate investment trust.
(11) An entity registered at all times during the tax year under the Investment
Company Act of 1940.
(12) A common trust fund operated by a bank under section 584(a).
(13) A financial institution.
(14) A middleman known in the investment community as a nominee or listed in the
most recent publication of the American Society of Corporate Secretaries, Inc.,
Nominee List.
(15) A trust exempt from tax under section 664 or described in section 4947.
Payments of dividends and patronage dividends that generally are exempt from
backup withholding include the following:
- Payments to nonresident aliens subject to withholding under section 1441.
- Payments to partnerships not engaged in a trade or business in the U.S. and
which 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.
Payments of interest that generally are exempt from backup withholding include
the following:
- Payments of interest on obligations issued by individuals. Note: You may be
subject to backup withholding if this interest is $600 or more and is paid in
the course of the payer's trade or business and you have not provided your
correct taxpayer identification number to the payor.
- Payments of tax-exempt interest (including exempt-interest dividends under
section 852).
- Payments described in section 6049(b)(5) to non-resident aliens.
- Payments on tax-free covenant bonds under section 1451.
- Payments made by certain foreign organizations.
- Payments of mortgage interest to you.
Exempt payees described above should file substitute Form W-9 to avoid possible
erroneous backup withholding. FILE THIS FORM WITH THE PAYER, FURNISH YOUR
TAXPAYER IDENTIFICATION NUMBER, WRITE "EXEMPT" ON THE FACE OF THE FORM, SIGN AND
DATE THE FORM AND RETURN IT TO THE PAYER. IF YOU ARE A NON-RESIDENT ALIEN OR A
FOREIGN ENTITY NOT SUBJECT TO BACKUP WITHHOLDING, FILE WITH PAYER A COMPLETED
INTERNAL REVENUE FORM W-8 (CERTIFICATE OF FOREIGN STATUS).
Payments that are not subject to information reporting are also not subject
to backup withholding. For details, see sections 6041, 6041A, 6042, 6044, 6045,
6049, 6050A and 6050N and the regulations promulgated thereunder.
Privacy Act Notice. Section 6109 requires most recipients of dividend, interest,
or other payments to give taxpayer identification numbers to payors who must
report the payments to the IRS. The IRS uses the numbers for identification
purposes. Payers must generally withhold 31% of taxable interest, dividend, and
certain other payments to a payee who does not furnish a taxpayer identification
number to a payer. Certain penalties may also apply.
Penalties
(1) Penalty for Failure to Furnish Taxpayer Identification Number. If you fail
to furnish your correct taxpayer identification number to a requester, you are
subject to a penalty of $50 for each such failure unless your failure is due to
reasonable cause and not to willful neglect.
(2) Civil Penalty for False Information With Respect to Withholding. If you make
a false statement with no reasonable basis which results in no imposition of
backup withholding, you are subject to a penalty of $500.
(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.
