<DOCUMENT>
<TYPE>EX-24.TXT
<SEQUENCE>2
<FILENAME>ex24siedschlag.txt
<DESCRIPTION>SIEDSCHLAG POWER OF ATTORNEY
<TEXT>
POWER OF ATTORNEY

	I, Gregory M. Siedschlag, hereby authorize and designate
each of Heidi M. Hoard, John S. Livingston, Amy C. Seidel and
Melissa D. Richason, signing singly, as my true and lawful
attorney-in-fact to:

(1)	execute for and on my behalf, in my capacity as an officer
and/or director of Tennant Company (the "Company"), Forms 3, 4
and 5 in accordance with Section 16(a) of the Securities Exchange
Act of 1934 (the "Exchange Act") and the rules and regulations
promulgated thereunder;

(2)	do and perform any and all acts for and on my behalf which
may be necessary or desirable to complete and execute any such
Form 3, 4 or 5 and timely file such form with the Securities and
Exchange Commission, any stock exchange or similar authority, and
the National Association of Securities Dealers; and

(3)	take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-
fact, may be to my benefit, in my best interest, or legally
required of me, it being understood that the statements executed
by such attorney-in-fact on my behalf pursuant to this Power of
Attorney shall be in such form and shall contain such terms and
conditions as such attorney-in-fact may approve in such attorney-
in-fact's discretion.

	I hereby further grant to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully
to all intents and purposes as I might or could do if personally
present, with full power of substitutes or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do
or cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.  I hereby acknowledge that the
foregoing attorneys-in-fact, in serving in such capacity at my
request, are not assuming, nor is the Company assuming, any of my
responsibilities to comply with Section 16 of the Exchange Act.

	This Power of Attorney shall remain in full force and
effect until I am no longer required to file Forms 3, 4 and 5
with respect to my holdings of and transactions in securities
issued by the Company, unless earlier revoked by me in a signed
writing delivered to the foregoing attorneys-in-fact.

	IN WITNESS WHEREOF, I have caused this Power of Attorney to
be duly executed as of this 26thth day of January, 2006.
				/s/Gregory M. Siedschlag


E:\Corporate\Insider Trading\ex24TNCsiedschlag.txt




</TEXT>
</DOCUMENT>
