Attached files

file filename
EX-31.2 - EX-31.2 - WASTE MANAGEMENT INCh76657aexv31w2.htm
10-K/A - FORM 10-K/A - WASTE MANAGEMENT INCh76657ae10vkza.htm
Exhibit 31.1
CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, David P. Steiner, certify that:
     1. I have reviewed this Amendment No. 1 to the annual report on Form 10-K/A of Waste Management, Inc.;
     2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.
         
 
  By:   /s/ DAVID P. STEINER
 
       
 
      David P. Steiner
President and Chief Executive Officer
Date: February 22, 2011