Joint Filing Agreement The undersigned agree that the Statement on Schedule 13D to which this Agreement is attached is filed on behalf of each one of them pursuant to Rule 13d-1(f)(iii). This Agreement may be executed in any number of counterparts,...

 
                            Joint Filing Agreement
 
     The undersigned agree that the Statement on Schedule 13D to which this
Agreement is attached is filed on behalf of each one of them pursuant to Rule
13d-1(f)(iii).  This Agreement may be executed in any number of counterparts,
each of which shall be deemed to be an original and all of which shall together
constitute one instrument.

                                                 WMI Technologies, Inc..

 
                                                 By: /s/ Xxxxxx X. Xxxx
                                                     Vice President



                                                 WMI Urban Services, Inc.

 
                                                 By: /s/ Xxxx X. Xxxxx
                                                     Authorized Representative

Dated: January 2, 1996