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<!-- RR Donnelley Xcelerate Taxonomy Schema, based on XBRL 2.1  http://www.rrdonnelley.com/ -->
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<!-- Round: 6 -->
<!-- Creation date: 2013-07-26T16:18:23Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley & Sons Company All Rights Reserved. -->
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        <link:definition>103 - Statement - Condensed Consolidated Balance Sheets</link:definition>
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        <link:definition>105 - Statement - Condensed Consolidated Statements of Operations</link:definition>
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        <link:definition>107 - Statement - Condensed Consolidated Statements of Comprehensive Income (Parenthetical)</link:definition>
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        <link:definition>109 - Statement - Condensed Consolidated Statement of Changes in Equity</link:definition>
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        <link:definition>110 - Disclosure - Basis of Presentation</link:definition>
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        <link:definition>111 - Disclosure - Landfill and Environmental Remediation Liabilities</link:definition>
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        <link:definition>112 - Disclosure - Debt</link:definition>
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        <link:definition>113 - Disclosure - Derivative Instruments and Hedging Activities</link:definition>
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        <link:definition>114 - Disclosure - Income Taxes</link:definition>
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        <link:definition>115 - Disclosure - Earnings Per Share</link:definition>
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        <link:definition>116 - Disclosure - Commitments and Contingencies</link:definition>
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        <link:definition>118 - Disclosure - Acquisitions</link:definition>
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        <link:definition>121 - Disclosure - Accumulated Other Comprehensive Income</link:definition>
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        <link:definition>122 - Disclosure - Fair Value Measurements</link:definition>
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        <link:definition>123 - Disclosure - Variable Interest Entities</link:definition>
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        <link:definition>124 - Disclosure - Condensed Consolidating Financial Statements</link:definition>
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        <link:definition>125 - Disclosure - Subsequent Event</link:definition>
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        <link:definition>126 - Disclosure - Basis of Presentation (Policies)</link:definition>
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        <link:definition>127 - Disclosure - Landfill and Environmental Remediation Liabilities (Tables)</link:definition>
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        <link:definition>128 - Disclosure - Debt (Tables)</link:definition>
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        <link:definition>129 - Disclosure - Derivative Instruments and Hedging Activities (Tables)</link:definition>
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        <link:definition>130 - Disclosure - Earnings Per Share (Tables)</link:definition>
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        <link:definition>131 - Disclosure - Segment and Related Information (Tables)</link:definition>
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        <link:definition>132 - Disclosure - Accumulated Other Comprehensive Income (Tables)</link:definition>
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        <link:definition>133 - Disclosure - Fair Value Measurements (Tables)</link:definition>
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      <link:roleType roleURI="http://www.wm.com/taxonomy/role/NotesToFinancialStatementsCondensedFinancialStatementsTextBlockTables" id="Role_NotesToFinancialStatementsCondensedFinancialStatementsTextBlockTables">
        <link:definition>134 - Disclosure - Condensed Consolidating Financial Statements (Tables)</link:definition>
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        <link:definition>135 - Disclosure - Basis of Presentation - Additional Information (Detail)</link:definition>
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        <link:definition>136 - Disclosure - Landfill and Environmental Remediation Liabilities - Liabilities for Landfill and Environmental Remediation Costs (Detail)</link:definition>
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        <link:definition>137 - Disclosure - Landfill and Environmental Remediation Liabilities - Changes to Landfill and Environmental Remediation Liabilities (Detail)</link:definition>
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        <link:definition>138 - Disclosure - Debt - Components of Debt (Detail)</link:definition>
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        <link:definition>139 - Disclosure - Debt - Components of Debt (Parenthetical) (Detail)</link:definition>
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        <link:definition>140 - Disclosure - Debt - Additional Information (Detail)</link:definition>
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        <link:definition>141 - Disclosure - Derivative Instruments and Hedging Activities - Fair Values of Derivative Instruments Recorded in Balance Sheet (Detail)</link:definition>
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        <link:definition>142 - Disclosure - Derivative Instruments and Hedging Activities - Additional Information (Detail)</link:definition>
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        <link:definition>143 - Disclosure - Derivative Instruments and Hedging Activities - Impact of Periodic Settlements of Active Swap Agreements and Impact of Terminated Swap Agreements on Results of Operations (Detail)</link:definition>
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        <link:definition>144 - Disclosure - Derivative Instruments and Hedging Activities - Impact of Periodic Settlements of Active Swap Agreements and Impact of Terminated Swap Agreements on Results of Operations (Parenthetical) (Detail)</link:definition>
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        <link:definition>145 - Disclosure - Derivative Instruments and Hedging Activities - Impact of Pretax Income on Cash Flow Derivatives on Comprehensive Income and Results of Operations (Detail)</link:definition>
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      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation" id="DisclosureIncomeTaxesAdditionalInformation">
        <link:definition>146 - Disclosure - Income Taxes - Additional information (Detail)</link:definition>
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        <link:definition>147 - Disclosure - Earnings Per Share - Common Share Data Used for Computing Basic and Diluted Earnings Per Share (Detail)</link:definition>
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        <link:definition>148 - Disclosure - Commitments and Contingencies - Additional information (Detail)</link:definition>
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      <link:roleType roleURI="http://www.wm.com/taxonomy/role/DisclosureSegmentAndRelatedInformationAdditionalInformation" id="DisclosureSegmentAndRelatedInformationAdditionalInformation">
        <link:definition>149 - Disclosure - Segment and Related Information - Additional Information (Detail)</link:definition>
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        <link:definition>150 - Disclosure - Segment and Related Information - Reportable Segments (Detail)</link:definition>
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        <link:definition>151 - Disclosure - Acquisitions - Additional Information (Detail)</link:definition>
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