0000950129-07-003626 10-Q 6 20070630 20070731 20070731 WASTE MANAGEMENT INC 0000823768 4953 731309529 DE 1231 10-Q 34 001-12154 071011589 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 h48531e10vq.htm FORM 10-Q EX-12 2 h48531exv12.htm COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES EX-31.1 3 h48531exv31w1.htm SECTION 302 CERTIFICATION OF THE CEO EX-31.2 4 h48531exv31w2.htm SECTION 302 CERTIFICATION OF THE CFO EX-32.1 5 h48531exv32w1.htm SECTION 906 CERTIFICATION OF THE CEO EX-32.2 6 h48531exv32w2.htm SECTION 906 CERTIFICATION OF THE CFO