(1) the Report fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934; and
(2) the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of
PESI.
/s/ Richard T. Kelecy
Richard T. Kelecy
Chief Financial Officer
August 14, 2002
This certification is made solely for purpose of 18 U.S.C. Section 1350 subject to the knowledge standard contained therein, and not for any other purpose.