<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>
<CAPTION>
GIVE THE GIVE THE EMPLOYER
SOCIAL SECURITY IDENTIFICATION
FOR THIS TYPE OF ACCOUNT NUMBER OF-- FOR THIS TYPE OF ACCOUNT NUMBER OF--
----------------------------------- ------------------------ ----------------------------------- ------------------------
<S> <C> <C> <C> <C> <C>
1. An individual's account The individual 9. A valid trust, estate, The legal entity (Do not
or pension trust furnish the identifying
number of the personal
representative or
trustee unless the legal
entity itself is not
designated in the
account title.)(5)
2. Two or more individuals The actual owner of the 10. Corporate account The corporation
(joint account) account or, if combined
funds, any one of the
individuals(1)
3. Husband and wife (joint The actual owner of the 11. Religious, charitable, The organization
account) account or, if joint or educational
funds, either person(1) organization account
4. Custodian account of a The minor(2) 12. Partnership account held The partnership
minor (Uniform Gift to in the name of the
Minors Act) business
5. Adult and minor (joint The adult or, if the 13. Association, club or The organization
account) minor is the only other tax-exempt
contributor, the organization
minor(1)
6. Account in the name of The ward, minor, or 14. A broker or registered The broker or nominee
guardian or committee incompetent person(3) nominee
for a designated ward,
minor, or incompetent
person
7. a. The usual revocable The grantor-trustee(1) 15. Account with the The public entity
savings trust Department of
account (grantor is Agriculture in the name
also trustee) of a public entity (such
b. So-called trust The actual owner(1) as a State or local
account that is not government, school
a legal or valid district, or prison)
trust under State that receives
law agricultural program
payments
8. Sole proprietorship The owner(4)
account
</TABLE>
------------------------
(1) List first and circle the name of the person whose number you furnish.
(2) Circle the minor's name and furnish the minor's social security number.
(3) Circle the ward's, minor's or incompetent person's name and furnish such
person's social security number.
(4) Show the name of the owner.
(5) 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, 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
OBTAINING A NUMBER
If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for A Social Security Number Card, or Form
SS-4, Application for Employer Identification Number, at the local office of the
Social Security Administration or the Internal Revenue Service and apply for a
number.
PAYEES EXEMPT FROM BACKUP WITHHOLDING
Payees specifically exempted from backup withholding on ALL payments include
the following:
- A corporation.
- A financial institution.
- An organization exempt from tax under section 501(a), or an individual
retirement plan.
- The United States or any agency or instrumentality thereof.
- A State, the District of Columbia, a possession of the United States, or
any subdivision or instrumentality thereof.
- A foreign government, a political subdivision of a foreign government, or
any agency or instrumentality thereof.
- An international organization or any agency or instrumentality thereof.
- A dealer in securities or commodities required to register in the U.S. or
a possession of the U.S.
- A real estate investment trust.
- A common trust fund operated by a bank under section 584(a).
- An exempt charitable remainder trust, or a non-exempt trust described in
section 4947(a)(1).
- An entity registered at all times under the Investment Company Act of
1940.
- A foreign central bank of issue.
Payments of dividends and patronage dividends not generally subject to
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 partner.
- Payments of patronage dividends where the amount renewed is not paid in
money.
- Payments made by certain foreign organizations.
- Payments made to a nominee.
Payments of interest not generally subject to 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 payer.
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- 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 made to a nominee.
Exempt payees described above must still complete the Substitute Form W-9
enclosed herewith 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, AND RETURN IT TO THE PAYER. IF THE PAYMENTS ARE INTEREST,
DIVIDENDS, OR PATRONAGE DIVIDENDS, ALSO SIGN AND DATE THE FORM.
Certain payments, other than interest, dividends and patronage dividends,
that are not subject to information reporting are also not subject to backup
withholding. For details, see the regulations under sections 6041, 6041A(a),
6042, 6044, 6045, 6049, 6050A and 6050N.
PRIVACY ACT NOTICE.--Section 6109 requires most recipients of dividend,
interest, or other payments to give taxpayer identification numbers to payers
who must report the payments to IRS. IRS uses the numbers for identification
purposes and to help verify the accuracy of the recipient's tax return. 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 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 taxpayer identification number to a payer, you are subject
to a penalty of $50 for each such failure which 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.--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.
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