0000950129-08-004117 10-Q 6 20080630 20080729 20080729 WASTE MANAGEMENT INC 0000823768 4953 731309529 DE 1231 10-Q 34 001-12154 08974711 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 h58781e10vq.htm FORM 10-Q - QUARTERLY REPORT EX-12 2 h58781exv12.htm COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES EX-31.1 3 h58781exv31w1.htm CERTIFICATION PURSUANT TO RULE 15D-14(A) BY DAVID P. STEINER, CEO EX-31.2 4 h58781exv31w2.htm CERTIFICATION PURSUANT TO RULE 15D-14(A) BY ROBERT G. SIMPSON, SVP & CFO EX-32.1 5 h58781exv32w1.htm CERTIFICATION PURSUANT TO SECTION 1350 BY DAVID P. STEINER, CEO EX-32.2 6 h58781exv32w2.htm CERTIFICATION PURSUANT TO SECTION 1350 BY ROBERT G. SIMPSON, SVP & CFO