EXHIBIT 10.29

SECOND AMENDMENT

TO

EMPLOYMENT AGREEMENT

WHEREAS, Wheelabrator Technologies, Inc., an indirect subsidiary of Waste
Management, Inc., and Mark A. Weidman (“Executive”), and Waste Management, Inc.
have made and entered into an Employment Agreement (the“Employment Agreement”)
dated May 11, 2006, as amended by the First Amendment to the Employment
Agreement;

WHEREAS, both the Company and Executive desire to further amend the Employment
Agreement to reflect certain provisions set forth below;

NOW, THEREFORE, the Employment Agreement is further amended in the following
respects:

1. Employment Agreement Dated May 11, 2006, as amended by the First Amendment to
Employment Agreement. The Company and Executive acknowledge and represent that
the Employment Agreement and the First Amendment to Employment Agreement are
hereby ratified, affirmed, and amended as set forth herein. WMI shall be and is
a party to the Employment Agreement, as amended herein (not in the capacity of
employer but solely as set forth in the Employment Agreement and below, and in
order for WMI to have power and authority to enforce the provisions of the
Employment Agreement, as amended). Capitalized terms herein shall have the same
meaning ascribed in the Employment Agreement, as amended, unless defined herein.

2. The following Section 4(f) is added to the Employment Agreement:

(f)    Shanghai Retention Bonus. In the event a Shanghai Sale is consummated on
or before June 30, 2014, and during Executive’s Employment Period,

 

  (i) “Shanghai Sale” shall mean the following:

 

  a. the sale of all of Wheelabrator China Holdings, Limited’s equity interests
in Shanghai Environmental Group Company Limited to Shanghai Chengtou Holding
Co., Ltd. or any other entity or person (or any other transaction having a
similar effect whether direct or indirect and whether by merger, acquisition,
consolidation or otherwise) at a price and under terms acceptable to and
approved by Board of Directors of WMI in its sole discretion;

 

  b. in exchange for no less than the United States of America (“US”) dollar
equivalent of $160,000,000 in cash (the “Initial

 

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       Sale Price”), such amounts determined using exchange rates in effect as
of the close of business in the United States on Monday, November 18, 2013 ,and
a subsequent payment stream of no less than $5,000,000 in annual installments of
$1,000,000 commencing on the date of the sale; and ;

 

  c. for which full cash payment in satisfaction of the Initial Sale Price is
received by WMI or a subsidiary of WMI.

 

  (ii) Excutive shall receive one time lump sum cash payment of $1,000,000
within ten (10) business days after WMI or a wholly owned subsidiary of WMI
receives the full cash proceeds of the Initial Sale Price.

IN WITNESS WHEREOF, the parties have caused this Second Amendment to be executed
on, and effective as of, this 23rd day of December, 2013.

 

    /s/ Mark A. Weidman

      WHEELABRATOR Mark A. Weidman     TECHNOLOGIES, INC.

(“Executive”)

    (the “Company”)     By:  

    /s/ Linda Smith

      Linda Smith       Vice President and Secretary     WASTE MANAGEMENT, INC.
   

By:

 

    /s/ David P. Steiner

 

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