AMENDMENT NUMBER 1

                                       TO

                                LICENSE AGREEMENT

                                     BETWEEN

                         VERDISYS, INC. AND CARL LANDERS


     This AMENDMENT NUMBER 1 TO LICENSE AGREEMENT  ("Amendment") is entered into
between Verdisys,  Inc., a California  corporation,  with its principal place of
business at 10600 N. DeAnza Boulevard,  Suite 250,  Cupertino,  California 95014
("Licensee")  and  Carl  Landers,  an  individual  with his  principal  place of
business at 141 South Union Street, Madisonville,  Kentucky 42431 ("Landers") as
of  September  4, 2003 and  amends  and  supplements  the terms of that  certain
License Agreement between the parties dated April 24, 2003 (the "Agreement").

     NOW THEREFORE,  in  consideration  of the mutual covenants and promises set
forth in this  Addendum  and for  other  good and  valuable  consideration,  the
receipt  of which both  parties  acknowledge,  Licensee  and  Landers  amend and
supplement the Agreement as follows:

     1.   The  following  amendment  shall be made to Section 3 of the Agreement
with the intention of removing the 10% license fee on revenues  derived from the
use of the Landers  Technology  and  replacing it with an immediate  delivery of
shares of common  stock of Licensee  and a flat fee of $500.00 per well  drilled
using the Landers Technology:

          (a)  The introductory  paragraph to Section 3 shall be modified in its
          entirety to read as follows:

          3.   License  Fee.  License fee shall be  $2,750,000.00,  plus 500,000
          shares of the  restricted  common stock of Licensee,  plus $500.00 per
          well drilled in which the Landers Horizontal Technology is utilized in
          any form by Licensee or any sub-licensee of Licensee.

          (b)  The  last  sentence  of  Section  3.A  shall be  modified  in its
          entirety to read as follows:

          3.A. ......Additionally,  Licensee  will pay to Landers as its License
          Fees,  $500.00  per well  drilled  in  which  the  Landers  Horizontal
          Technology is utilized in the Licensee's Area.

          In addition, in consideration of the restructured license fee, Landers
          shall be  nominated  for  appointment  to a  position  on the Board of
          Directors of Licensee  for the  upcoming  term of the Board and in any
          subsequent  year in which this Agreement is in effect,  all as subject
          to  the  requisite  approval  of  the  shareholders  of  Licensee,  as
          otherwise required pursuant to the then-in-effect  Bylaws and Articles
          of Incorporation of the Licensee and the California Corporation Code.



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     2.   Section 6 of the Agreement shall be modified to read as follows:

          6.   Term.  This  Agreement  shall become  effective upon execution by
          both parties of this Agreement and shall continue until the expiration
          of the  patent(s)  on the  technology  licensed by Landers to Licensee
          hereunder,   all  as  subject  to  earlier  termination  as  otherwise
          expressly provided herein.

     3.   Section 7.B of the Agreement  shall be deleted in its  entirety,  with
the  intention of negating  either  party's  ability to terminate  the Agreement
without cause upon sixty (60) days advance written notice:

          7.B  This  Agreement  shall  terminate  upon  the  expiration  of  the
          patent(s) on the technology licensed by Landers to Licensee hereunder.

     4.   Landers hereto acknowledge that subsequent to the entry of the parties
hereto  into the  Agreement,  Licensee  merged  (the  "Merger")  with and into a
California  corporation  formerly  known  as  Reconstruction  Data  Group,  Inc.
("RDGI"),  which upon  consummation of the Merger,  was the surviving  entity of
such Merger and which  thereupon  changed  its name to  Verdisys,  Inc.  Landers
acknowledges  that  pursuant  to the terms of the  Merger,  the  rights  granted
Licensee  under the Agreement now reside with RDGI and further,  that the effect
of the Merger works no violation or breach upon the terms and  conditions of the
Agreement and that such Agreement remains in full force and effect.

     5.   Capitalized  terms not otherwise  defined in this  Amendment will have
the meaning set forth in the Agreement.

     6.   Except as supplemented  and amended in this  Amendment,  the Agreement
will remain in full force and effect.

IN WITNESS WHEREOF, Landers and Licensee have caused this Amendment to be signed
by their  respective  officers  thereunto  duly  authorized as of the date first
written above.


"Licensee"                                  "Landers"

VERDISYS, INC.



By:
    -------------------------------         -------------------------------
    Dan Williams, CEO                       Carl Landers








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