STOCK PURCHASE AGREEMENT

     STOCK  PURCHASE  AGREEMENT made as of January 11, 2008 between GS CleanTech
Corporation,  a Delaware corporation with offices at One Penn Plaza, Suite 1612,
New York, NY 10119 ("GSCL") and GS EnviroServices,  Inc., a Delaware corporation
with offices at 14B Jan Sebastian Drive, Sandwich, MA 02563 ("GSEN").

     WHEREAS,  GSCL  owns 15  million  shares of the  common  stock of GSEN (the
"Shares"), representing 53.19% of the outstanding shares; and

     WHEREAS,  GSEN wishes to repurchase  the Shares on the terms and subject to
the conditions hereof.

     NOW, THEREFORE, it is agreed:

1.   First Tranche.

     a.   GSCL hereby sells to GSEN,  and GSEN hereby  purchases  eight  million
          seven  hundred   thirty-three   thousand  three  hundred  thirty-three
          (8,733,333)  shares of the common stock of GSEN (the "First Tranche").
          In consideration for the First Tranche, GSEN hereby agrees to issue to
          YA Global  Investments,  LP ("YAGI") the convertible  debenture in the
          principal  amount of  $2,000,000  dated  this  date,  pursuant  to the
          Securities Purchase Agreement dated this date between GSEN and YAGI.

     b.   The parties  acknowledge  that the First  Tranche has been  pledged by
          GSCL to YAGI to secure  certain  obligations.  GSCL  agrees  that upon
          release of the First  Tranche  from said  pledge and  delivery  of the
          certificates  for the  First  Tranche  to GSCL,  GSCL  shall  promptly
          deliver to GSEN the  certificates  for the First Tranche duly endorsed
          in blank with a medallion-guaranteed signature.

     c.   GSCL  represents  and  warrants  to GSEN  that  upon  delivery  of the
          certificates  for the First Tranche to GSEN,  said shares will be free
          of liens, claims and encumbrances.

2.   Second Tranche

     a.   GSCL  hereby  agrees to sell and GSEN hereby  agrees to  purchase  six
          million  two  hundred  sixty-six  thousand  six  hundred   sixty-seven
          (6,266,667) shares of GSEN common stock (the "Second Tranche"), on the
          terms  and  conditions  described  in  this  Section  2.  The  parties
          acknowledge  that the Second  Tranche has been pledged by GSCL to YAGI
          to  secure  certain  obligations.  GSEN and YAGI have  entered  into a
          letter  agreement  dated  this  date,   commonly  known  as  the  Side
          Agreement,  which provides that if GSEN pays  $1,000,000 to YAGI on or
          before May 10, 2008, then the Second Tranche will be released from the
          pledge.  GSCL agrees that if the Second  Tranche is released from said
          pledge by reason of GSEN's  payment of $1,000,000  to YAGI,  then GSCL
          shall promptly deliver to GSEN the certificates for the Second Tranche
          duly endorsed in blank with a medallion-guaranteed signature.

     b.   GSCL  represents  and  warrants  to GSEN  that  upon  delivery  of the
          certificates  for the Second Tranche to GSEN, said shares will be free
          of liens, claims and encumbrances.

3.   Proxies.  Simultaneous  with the execution  hereof,  GSCL shall execute and
     deliver to the President of GSEN the proxies annexed hereto as Appendices A
     and B.

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
set forth on its first line.

                                           GS CLEANTECH CORPORATION


                                           By: /s/ Kevin Kreisler
                                           ----------------------------
                                                   Kevin Kreisler, Chairman


                                           GS ENVIROSERVICES, INC.


                                           By: /s/ James Green
                                           ----------------------------
                                                   James Green, CEO







                                                                   APPENDIX A

                                      PROXY


     The   undersigned   hereby   appoints   the  Board  of   Directors   of  GS
EnviroServices,  Inc., as constituted  from time to time, or the designee of the
Board for this purpose  proxy of the  undersigned  to vote at any meeting of the
stockholders of GS EnviroServices,  Inc., a Delaware corporation (the "Company")
or to express  consent by such  stockholders  to a  corporate  action in writing
without a meeting,  in each case in respect of any matter that is brought before
the holders of the  Company's  voting  stock,  on behalf of and with  respect to
eight million seven hundred  thirty-three  thousand  three hundred  thirty-three
(8,733,333)  of  the  shares  of  common  stock  held  by the  undersigned.  The
undersigned  acknowledges  that this proxy is coupled  with an  interest  and is
irrevocable  until the earliest of (a) January 1, 2012, or (b) the date on which
YA Global Investments,  LP elects to accelerate the maturity date of the Secured
Convertible  Debenture dated January 11, 2008 issued to it by GS EnviroServices,
Inc.,  at which time this proxy  shall  terminate  and have no further  force or
effect.



GS CLEANTECH CORPORATION

By:      ___________________________________
         Name: Kevin Kreisler
         Title: Chairman


Date: January 11, 2008








                                                                     APPENDIX B

                                      PROXY


     The   undersigned   hereby   appoints   the  Board  of   Directors   of  GS
EnviroServices,  Inc., as constituted  from time to time, or the designee of the
Board for this purpose  proxy of the  undersigned  to vote at any meeting of the
stockholders of GS EnviroServices,  Inc., a Delaware corporation (the "Company")
or to express  consent by such  stockholders  to a  corporate  action in writing
without a meeting,  in each case in respect of any matter that is brought before
the holders of the Company's  voting stock, on behalf of and with respect to six
million two hundred sixty-six  thousand six hundred  sixty-seven  (6,266,667) of
the shares of common stock held by the undersigned. The undersigned acknowledges
that this proxy is coupled  with an  interest  and is  irrevocable  until May 1,
2008,  at which time this proxy  shall  terminate  and have no further  force or
effect.



GS CLEANTECH CORPORATION

By:      ___________________________________
         Name: Kevin Kreisler
         Title: Chairman


Date: January 11, 2008