AMENDMENT
        SIX TO LETTER OF INTENT
 
 With
        reference to the Letter of Intent dated April 27, 1998, by and between
        BioGenesis Enterprises, Inc. and Summit Technologies, Inc. and the Amendment
        to
        Letter of Intent dated November 2, 1998 between the parties, and with reference
        to the merger of Summit Technologies, Inc. into Summit Environmental
        Corporation, Inc. (Summit) the surviving company, and with reference to
        Amendment Two to Letter of Intent dated March 1, 1999, and with reference
        to
        Amendment Three to Letter of Intent dated April 30, 1999, and with reference
        to
        Amendment Four to Letter of Intent dated May 28, 1999, and with reference
        to
        Amendment five to Letter of Intent dated June 30, 1999:
 
 1.  The
        sum
        of $275,000.00 to be paid on or before August 1, 1999, under Amendment Five,
        and
        the sum of $300,000 to be paid on or before August 1, 1999 under Amendment
        One
        to Letter of Intent are rescheduled as follows:
 a.  Summit
        will pay $25,000 on or before August 5, 1999, leaving a balance of
        $550,000.
 b.  Starting
        September 1, 1999, and every 15 days thereafter until the total of $550,000
        is
        paid, Summit will pay to BioGenesis thirty-five percent (35%) of the total
        amount received as a result of capital raising activities during the preceding
        period.
 c.  Starting
        August 16, 1999, and thereafter on the 1 st and the
        16 th of each
        month, Summit will provide BioGenesis a listing of funds received during
        the
        preceding period.
 d.  If
        the
        balance of $500,000 is not paid by December 1, 1999, then, based on the
        circumstances at the time, Summit and BioGenesis will negotiate in good faith
        to
        compensate BioGenesis for the stretch-out in payments.
 
 All
        other
        aspects of the Letter of Intent dated April 27, 1998, the Amendment to the
        Letter of Intent dated November 2, 1998; Amendment Two to the Letter of Intent
        dated March 31, 1999; Amendment Three to the Letter of Intent dated April
        30,
        1999; and Amendment Four to the Letter of Intent dated May 28, 1999, and
        Amendment Five to the Letter of Intent dated June 30, 1999, shall remain
        in
        effect.
 
 IN
        WITNESS WHEREOF, the parties have executed this Amendment Six to the Letter
        of
        Intent as of the date contained herein.
 
 BioGenesis
                  Enterprises, Inc.
                
                */s/
                  Mohsen C. Amiran*
                
                By:
                Mohsen
                  C. Amiran, President
                
                Date:
                  July 29, 1999
              Summit
                  Environmental Corporation, Inc.
                
                */s/
                  Keith Parker*
                
                By:
                Keith
                  Parker, Chairman/CEO
                
                Date:
                  July 29, 1999
 
  Exhibit
            10.10
  **Summit
        Payments for Patent Rights Purchase**
 $1,000,000
        total, including payments prior to 4/27/98 Agreement
 
 **Date**
              **Amount**
              **Balance**
              **Note**02/02/98
              $
                  25,000
              $975,000
              Paid
                  prior to 4/27/98 Agreement03/27/98
              $
                  25,000
              $950,000
              Paid
                  prior to 4/27/98 Agreement04/20/98
              $
                  25,000
              $925,000
              Paid
                  prior to 4/27/98 Agreement05/08/98
              $
                  25,000
              $900,000
              Paid
                  under para. 3A & 3B of 4/27/98 Agreement06/01/98
              $
                  25,000
              $875,000
              Paid
                  under para. 3A & 3B of 4/27/98 Agreement06/30/98
              $
                  75,000
              $800,000
              Paid
                  under para. 3A & 3B of 4/27/98 Agreement12/29/98
              $
                  50,000
              $750,000
              Paid
                  under para. 3C of 4/27/98 Agreement01/14/99
              
              
              Received
                  750,000 shares under para. 2C of 4/27/98 Agreement02/02/99
              $150,000
              $600,000
              Paid
                  under para. 3C of 4/27/98 Agreement07/02/99
              $ 
                  25,000
              $575,000
              Paid
                  under para. 3C of 4/27/98 Agreement08/05/99
              $ 
                  25,000
              $550,000
              Paid
                  under para. 3C of 4/27/98 Agreement12/03/99
              $100,000
              $ 
                  50,000
              Paid
                  under para. 3C of 4/27/98 Agreement12/15/99
              $100,000
              $350,000
              Paid
                  under para. 3C of 4/27/98 Agreement12/31/99
              $350,000
              $
                  0
              Received
                  875,000 shares in lieu of cash
 
 Exhibit
            10.10