<SUBMISSION>
<ACCESSION-NUMBER>0000950129-07-001273
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20070309
<ITEMS>8.01
<ITEMS>9.01
<FILING-DATE>20070309
<DATE-OF-FILING-DATE-CHANGE>20070309
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>WASTE MANAGEMENT INC
<CIK>0000823768
<ASSIGNED-SIC>4953
<IRS-NUMBER>731309529
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-12154
<FILM-NUMBER>07683953
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1001 FANNIN STREET
<STREET2>STE 4000
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
<PHONE>7135126200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1001 FANNIN STREET
<STREET2>SUITE 4000
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>USA WASTE SERVICES INC
<DATE-CHANGED>19920703
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>h44480e8vk.htm
<DESCRIPTION>FORM 8-K - CURRENT REPORT
<TEXT>
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<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, DC 20549</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
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<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM 8-K</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>CURRENT REPORT</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Date of Report (Date of earliest event reported): </B>March&nbsp;9, 2007
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>Waste Management, Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt"><B>(Exact Name of Registrant as Specified in Charter)</B></DIV>


<DIV align="center">
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    <TD width="3%">&nbsp;</TD>
    <TD width="31%">&nbsp;</TD>
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<TR valign="bottom">
    <TD align="center" valign="top">Delaware<BR>
<B>(State or Other Jurisdiction of Incorporation)</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">1-12154<BR>
<B>(Commission File Number)</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">73-1309529<BR>
<B>(IRS Employer Identification No.)</B></TD>
</TR>
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<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD align="center" valign="top">1001 Fannin, Suite&nbsp;4000 Houston, Texas<BR>
<B>(Address of Principal Executive Offices)</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">77002<BR>
<B>(Zip Code)</B></TD>
</TR>
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</TABLE>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Registrant&#146;s Telephone number, including area code: </B>(713)&nbsp;512-6200
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 50%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt"><B>(Former Name or Former Address, if Changed Since Last Report)</B></DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy
the filing obligation of the registrant under any of the following provisions:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><FONT face="Wingdings">&#111;</FONT>&nbsp;&nbsp;Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><FONT face="Wingdings">&#111;</FONT>&nbsp;&nbsp;Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><FONT face="Wingdings">&#111;</FONT>&nbsp;&nbsp;Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><FONT face="Wingdings">&#111;</FONT>&nbsp;&nbsp;Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
</DIV>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
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<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8.01. Other Events</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On March&nbsp;9, 2007, Waste Management, Inc. (the &#147;Company&#148;) filed a prospectus supplement
pursuant to Rule&nbsp;424 of the Securities Act of 1933, as amended, to its registration statement on
Form&nbsp;S-3 (No.&nbsp;333-137526) (the &#147;Registration Statement&#148;), to register the issuance of 215,000
shares of its common stock, par value $0.01 per share (the &#147;Common Stock&#148;), upon exercise of
outstanding warrants to purchase shares of Common Stock of the Company.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Company is filing a legal opinion issued in connection with the issuance of its shares of
Common Stock as exhibit 5.1, to be incorporated by reference into the Registration Statement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>Item&nbsp;9.01. Financial Statements and Exhibits.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">(c)&nbsp;Exhibits
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">5.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Opinion of Amanda K. Maki
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
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<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused
this report to be signed on its behalf by the undersigned, hereunto duly authorized.
</DIV>

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<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">WASTE MANAGEMENT, INC.<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: March 9, 2007&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ Rick L Wittenbraker
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Rick L Wittenbraker, <I>Senior Vice President</I>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

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    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
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<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><U><B>Exhibit&nbsp;Index</B></U>
</DIV>

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    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px"><B>Exhibit&nbsp;Number</B>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><B>Description</B></TD>
</TR>
<TR style="font-size: 1px">
    <TD align="center" valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>

<TD align="left" valign="top"><div style="border-top: 1px solid #000000; width: 10%">&nbsp;</div></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Amanda K. Maki</TD>
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<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>h44480exv5w1.htm
<DESCRIPTION>OPINION OF AMANDA K. MAKI
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<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Exhibit&nbsp;5.1</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt">&#091;WASTE MANAGEMENT LETTERHEAD&#093;
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt">March&nbsp;9, 2007
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Waste Management, Inc.<BR>
1001 Fannin Street, Suite&nbsp;4000<BR>
Houston, Texas 77002

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Gentlemen,
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I am Corporate Counsel of Waste Management, Inc., a Delaware corporation (the &#147;Company&#148;), and
have acted in such capacity in connection with the sale of 215,000 shares of the Company&#146;s common
stock, par value $0.01 per share (the &#147;Common Stock&#148;), pursuant to the exercise of warrants dated
March&nbsp;18, 1997 (the &#147;Warrants&#148;). The 215,000 shares of Common Stock are being issued under a
registration statement on Form&nbsp;S-3 (No.&nbsp;333-137526) filed under the Securities Act of 1933, as
amended.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I have examined corporate documents of the Company, including its Certificate of
Incorporation and Bylaws, and resolutions adopted by its board of directors and committees thereof.
I have also examined the Registration Statement, together with the exhibits thereto, and such
other documents that I have deemed necessary for the purposes of expressing the opinion contained
herein. I have relied on representations made by and certificates of the officers of the Company
and public officials with respect to certain facts material to my opinion. I have made no
independent investigation regarding such representations and certificates.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Based upon the foregoing, I am of the opinion that when payment for the shares of Common Stock
has been made pursuant to the Warrants, the Common Stock issued thereupon will be validly issued,
fully paid and nonassessable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I hereby consent to the filing of this opinion as an exhibit to the Registration Statement.
</DIV>

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    <TD width="48%">&nbsp;</TD>
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    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Very truly yours,<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Amanda K. Maki
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Amanda K. Maki&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Corporate Counsel&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
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