Exhibit 24


POWER OF ATTORNEY

KNOW ALL BY THESE PRESENT, that Ryan T. Clark, as manager of TPC
Ventures, LLC, whose signature appears below, constitutes and
appoints Mark W. Harding as attorney-in-fact and agent for the
undersigned solely for the purpose of executing reports required
under Section 13 and 16 of the Securities and Exchange Act of
1934 as they relate to ownership of Pure Cycle Corporation, and
filing the same, with exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange
Commission, thereby ratifying and confirming all that said
attorneys-in-fact have done or caused to be done, or may do or
cause to be done, by virtue hereof.

The undersigned further agrees to indemnify and hold harmless
each appointee against any liability for any actions performed
by that appointee in good faith on behalf of the undersigned
pursuant to this power of attorney.

This power of attorney shall remain in effect until revoked by a
subsequent written instrument.


Dated:  June 22, 2005



/s/ Ryan T. Clark
Ryan T. Clark
As manager of TPC Ventures, LLC