0000950129-07-002179 10-Q 6 20070331 20070427 20070427 WASTE MANAGEMENT INC 0000823768 4953 731309529 DE 1231 10-Q 34 001-12154 07793595 1001 FANNIN STREET STE 4000 HOUSTON TX 77002 7135126200 1001 FANNIN STREET SUITE 4000 HOUSTON TX 77002 USA WASTE SERVICES INC 19920703 10-Q 1 h45612e10vq.htm FORM 10-Q - QUARTERLY REPORT EX-12 2 h45612exv12.htm COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES EX-31.1 3 h45612exv31w1.htm CERTIFICATION OF CEO PURSUANT TO RULE 15D-14(A) EX-31.2 4 h45612exv31w2.htm CERTIFICATION OF SVP & CFO PURSUANT TO RULE 15D-14(A) EX-32.1 5 h45612exv32w1.htm CERTIFICATION OF CEO PURSUANT TO SECTION 1350 EX-32.2 6 h45612exv32w2.htm CERTIFICATION OF SVP & CFO PURSUANT TO SECTION 1350