Document:

Guarantee Agreement by Waste Management Holdings, Inc.

 Exhibit 4.2 
 GUARANTEE 
 BY WASTE MANAGEMENT HOLDINGS, INC. 

(formerly known as Waste Management, Inc.) 
 in Favor of The Bank of New York Mellon Trust Company, N.A., as Trustee for the Holders of Certain Debt Securities of 
 WASTE MANAGEMENT, INC. 
 $500,000,000 

2.90% Senior Notes due 2022 
 September 12, 2012 

 GUARANTEE, dated as of September 12, 2012 (as amended from time to time, this
“Guarantee”), made by Waste Management Holdings, Inc. (formerly known as Waste Management, Inc.), a Delaware corporation (the “Guarantor”), in favor of The Bank of New York Mellon Trust Company, N.A., as trustee for the holders
of the $500 million 2.90% Senior Notes due 2022 (the “Debt Securities”) of Waste Management, Inc. (formerly known as USA Waste Services, Inc.), a Delaware corporation (the “Issuer”). 

WITNESSETH: 

SECTION 1. Guarantee 
 (a) The Guarantor hereby unconditionally guarantees the punctual payment when due, whether at stated maturity, by acceleration or otherwise, of the principal of, premium, if any, and interest on the Debt
Securities (the “Obligations”), according to the terms of the Debt Securities and as more fully described in the Indenture (as amended, modified or otherwise supplemented from time to time, the “Indenture”), dated as of
September 10, 1997, between the Issuer, as successor to USA Waste Services, Inc., and The Bank of New York Mellon Trust Company, N.A. (the current successor to Texas Commerce Bank National Association), as trustee (the “Trustee”).

 (b) It is the intention of the Guarantor that this Guarantee not constitute a fraudulent transfer or conveyance for purposes
of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar federal or state law to the extent applicable to this Guarantee. To effectuate the foregoing intention, the amount guaranteed by the
Guarantor under this Guarantee shall be limited to the maximum amount as will, after giving effect to such maximum amount and all other contingent and fixed liabilities of the Guarantor (other than guarantees of the Guarantor in respect of
subordinated debt) that are relevant under such laws, result in the Obligations of the Guarantor under this Guarantee not constituting a fraudulent transfer or conveyance. For purposes hereof, “Bankruptcy Law” means Title 11, U.S. Code, or
any similar Federal or state law for the relief of debtors. 
 SECTION 2. Guarantee Absolute .The Guarantor
guarantees that the Obligations will be paid strictly in accordance with the terms of the Indenture, regardless of any law, regulation or order now or hereafter in effect in any jurisdiction affecting any of such terms or the rights of holders of
the Debt Securities with respect thereto. The liability of the Guarantor under this Guarantee shall be absolute and unconditional irrespective of: 
 (i) any lack of validity or enforceability of the Indenture, the Debt Securities or any other agreement or instrument relating thereto; 

(ii) any change in the time, manner or place of payment of, or in any other term of, all or any of the Obligations, or any
other amendment or waiver of or any consent to departure from the Indenture; 
 (iii) any exchange, release or
non-perfection of any collateral, or any release or amendment or waiver of or consent to departure from any other guaranty, for all or any of the Obligations; or 

 (iv) any other circumstance which might otherwise constitute a defense
available to, or a discharge of, the Issuer or a guarantor. 
 SECTION 3. Subordination. The Guarantor covenants and
agrees that its obligation to make payments of the Obligations hereunder constitutes an unsecured obligation of the Guarantor ranking (a) pari passu with all existing and future senior indebtedness of the Guarantor and (b) senior in
right of payment to all existing and future subordinated indebtedness of the Guarantor. 
 SECTION 4. Waiver;
Subrogation 
 (a) The Guarantor hereby waives notice of acceptance of this Guarantee, diligence, presentment, demand of
payment, filing of claims with a court in the event of merger or bankruptcy of the Issuer, any right to require a proceeding filed first against the Issuer, protest or notice with respect to the Debt Securities or the indebtedness evidenced thereby
and all demands whatsoever. 
 (b) The Guarantor shall be subrogated to all rights of the Trustee or the holders of any Debt
Securities against the Issuer in respect of any amounts paid to the Trustee or such holder by the Guarantor pursuant to the provisions of this Guarantee; provided, however, that the Guarantor shall not be entitled to enforce, or to receive any
payments arising out of, or based upon, such right of subrogation until all Obligations shall have been paid in full. 

SECTION 5. No Waiver, Remedies. No failure on the part of the Trustee or any holder of the Debt Securities to exercise, and
no delay in exercising, any right hereunder shall operate as a waiver thereof; nor shall any single or partial exercise of any right hereunder preclude any other or further exercise thereof or the exercise of any other right. The remedies herein
provided are cumulative and not exclusive of any remedies provided by law. 
 SECTION 6. Continuing Guarantee; Transfer
of Interest . This Guarantee is a continuing guaranty and shall (i) remain in full force and effect until the earliest to occur of (A) the date, if any, on which the Guarantor shall consolidate with or merge into the Issuer or any
successor thereto, (B) the date, if any, on which the Issuer or any successor thereto shall consolidate with or merge into the Guarantor, (C) payment in full of the Obligations and (D) the release by the lenders under the Amended and
Restated Revolving Credit Agreement dated May 9, 2011, by and among the Issuer, the Guarantor (as guarantor), Bank of America, N.A., as administrative agent, J.P. Morgan Securities LLC, Merrill Lynch, Pierce, Fenner & Smith
Incorporated and Barclays Capital, as lead arrangers and joint book runners (or under any replacement or new principal credit facility of the Issuer) of the guarantee of the Guarantor thereunder, (ii) be binding upon the Guarantor, its
successors and assigns, and (iii) inure to the benefit of and be enforceable by any holder of Debt Securities, the Trustee, and by their respective successors, transferees, and assigns. 

SECTION 7. Reinstatement. This Guarantee shall continue to be effective or be reinstated, as the case may be, if at any time
any payment of any of the Obligations is rescinded or must otherwise be returned by any holder of the Debt Securities or the Trustee upon the insolvency, bankruptcy or reorganization of the Issuer or otherwise, all as though such payment had not
been made. 

 SECTION 8. Amendment. The Guarantor may amend this Guarantee at any time for any
purpose without the consent of the Trustee or any holder of the Debt Securities; provided, however, that if such amendment adversely affects the rights of the Trustee or any holder of the Debt Securities, the prior written consent of the Trustee
shall be required. 
 SECTION 9. Governing Law. THIS GUARANTEE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE PROVISIONS THEREOF RELATING TO CONFLICT OF LAWS. 
 IN WITNESS
WHEREOF, the Guarantor has caused this Guarantee to be duly executed and delivered by its officer thereunto duly authorized as of the date first above written. 

 

			
	WASTE MANAGEMENT HOLDINGS, INC.,
		
	By:	 	 /s/ Devina A. Rankin

		 	 Devina A. Rankin
 Vice
President and Treasurer

		
	 By:
	 	 /s/ Don P. Carpenter

		 	 Don P. Carpenter

Vice President, Chief Financial Officer

and Controller

 Signature Page to GuaranteeSeparation Agreement

 EXHIBIT 10.1 
 SEPARATION AGREEMENT 
 THIS SEPARATION AGREEMENT (“Agreement”) is
entered into on this 25th day of July, 2012 between Waste Management, Inc. (the “Company”) and Grace Cowan (the “Executive”). 
 This Agreement is binding upon, and extends to, the parties and their past and present officers, directors, employees, shareholders, parent corporations, subsidiaries, affiliates, partners, agents,
representatives, heirs, executors, assigns, administrators, successors, predecessors, family members, d/b/a’s, assumed names, and insurers, whether specifically mentioned hereafter or not. A reference to a party in this Agreement necessarily
includes those persons and/or entities described in the foregoing sentence. 
 PREAMBLE 

WHEREAS, the Company and Executive previously entered into that certain Employment Agreement in February 2011 (the
“Employment Agreement”); 
 WHEREAS, pursuant to such Employment Agreement, Executive has been continuously
employed by the Company; 
 WHEREAS, the Company has notified Executive that her employment is being terminated pursuant
to Section 5(e) of said Employment Agreement, effective August 31, 2012; 
 WHEREAS, the Employment Agreement
states that upon a termination pursuant to Section 5(e), Executive will receive certain severance benefits described in Section 6(e) upon her execution of a waiver and release of claims; 

WHEREAS, the Company and Executive now jointly desire to enter into this Agreement to supplement the continuing provisions of said
Employment Agreement as set forth below; and 
 NOW, THEREFORE, in consideration of the premises and agreements contained
herein, and for other good and valuable consideration, the Company and Executive hereby agree as follows: 
 1. Termination of
Employment. The employment of Executive is terminated, effective August 31, 2012 (“Employment Termination Date”). The parties agree that Executive’s employment is being terminated pursuant to Section 5(e) of the
Employment Agreement. 
 Executive is entitled to the certain compensation and benefits set forth in Section 6(e)
(i) and (ii) of the Employment Agreement without her execution of a release, as more specifically detailed in Exhibit A to this Agreement. It is expressly agreed to and acknowledged by the parties that Executive is entitled to the
compensation and benefits set forth in Exhibit A whether or not she executes this Agreement. 

 2. Payment of Additional Consideration. In consideration of the premises and promises
herein contained, and subject to Executive executing and not revoking this Agreement, it is agreed that the Company will provide Executive those certain benefits specifically detailed in Exhibit B to this Agreement. The benefits set forth in Exhibit
B include those that Executive will receive under Section 6(e) (iii) (iv) and (v) of the Employment Agreement and an additional separation bonus upon the execution of a waiver and release of claims. It is expressly agreed to
and acknowledged by the parties that Executive is not entitled to the benefits set forth in Exhibit B until such time as she executes and does not revoke this Agreement. The Company shall withhold, or cause to be withheld, from said payments all
amounts required to be withheld pursuant to federal, state or local tax laws. 
 The consideration set forth in this Paragraph 2
is in full, final and complete settlement of any and all claims which Executive could make in any complaint, charge, or civil action, whether for actual, nominal, compensatory, or punitive damages (including attorneys’ fees). Executive
acknowledges that such consideration is being made as consideration for the releases set forth in Paragraphs 4 and 5. Executive further acknowledges that the consideration set forth in this Paragraph 2 are separate and distinct of and from each
other, and that either payment is independent valuable consideration for the release and waiver set forth in Paragraphs 4 and 5. 

3. Post-Notification Employment With The Company. From now until Executive’s August 31, 2012 termination, the Company
shall continue to employee Executive, and Executive shall continue to be employed by the Company upon the terms and subject to the conditions set forth in this Agreement. The period of Executive’s continued employment with the Company under
this Agreement shall commence immediately and shall continue until August 31, 2012 (“Continued Employment Period”). During the Continued Employment Period, Executive shall perform such duties and have such responsibilities as may be
assigned to her from time to time by the Company’s Chief Executive Officer. It is expressly agreed that Executive’s duties and responsibilities during such Continued Employment Period shall be limited to providing advice and consulting
support on the Company’s Customer Experience projects as requested. Executive will not be expected to manage the day-to-day activities of the Customer Experience Department. Executive is not required to be present at the Company’s offices
unless specifically requested. The Company will reimburse Executive for all reasonable pre-approved out-of-pocket business expenses incurred by Executive in accordance with the Company’s customary practices and policies.  

4. General Release. In exchange for the first payment made to Executive pursuant to Paragraph 2, Executive releases and discharges
Waste Management, its past and present parent, subsidiary and affiliated companies, agents, directors, officers, employees, and representatives, and all persons acting by, through, under or in concert with Waste Management (collectively referred to
as the “Released Parties”), from any and all causes of action, claims, liabilities, obligations, promises, agreements, controversies, damages, and expenses, known or unknown, which Executive ever had, or now has, against the Released
Parties to the date of this Agreement. The claims Executive releases include, but are not limited to, claims that the Released Parties: 

  
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	 	•	 	 discriminated against Executive on the basis of her race, color, sex (including sexual harassment), national origin, ancestry, disability, religion,
sexual orientation, marital status, parental status, veteran status, source of income, entitlement to benefits, union activities, age or any other claim or right Executive may have under the Age Discrimination in Employment Act
(“ADEA”), or any other status protected by local, state or federal laws, constitutions, regulations, ordinances or executive orders; or 

  

	 	•	 	 failed to give proper notice of this employment termination under the Workers Adjustment and Retraining Notification Act (“WARN”), or any
similar state or local statute or ordinance; or 

  

	 	•	 	 violated any other federal, state, or local employment statute, such as the Employee Retirement Income Security Act of 1974, which, among other things,
protects employee benefits; the Fair Labor Standards Act, which regulates wage and hour matters; the Family and Medical Leave Act, which requires employers to provide leaves of absence under certain circumstances; Title VII of the Civil Rights Act
of 1964; the Older Workers Benefits Protection Act; the Americans With Disabilities Act; the Rehabilitation Act; OSHA; and any other laws relating to employment; or 

 

	 	•	 	 violated its personnel policies, handbooks, any covenant of good faith and fair dealing, or any contract of employment between Executive and any of the
Released Parties; or 

  

	 	•	 	 violated public policy or common law, including claims for: personal injury, invasion of privacy, retaliatory discharge, negligent hiring, retention or
supervision, defamation, intentional or negligent infliction of emotional distress and/or mental anguish, intentional interference with contract, negligence, detrimental reliance, loss of consortium to Executive or any member of Executive’s
family, and/or promissory estoppel; or 

  

	 	•	 	 is in any way obligated for any reason to pay your damages, expenses, litigation costs (including attorneys’ fees), bonuses, commissions,
disability benefits, compensatory damages, punitive damages, and/or interest. 

 Executive is not
prohibited from making or asserting (a) any claim or right under state workers’ compensation or unemployment laws, or (b) any claim or right which by law cannot be waived. Executive waives, however, the right to recover money if any
federal, state or local government agency pursues a claim on Executive’s behalf or on behalf of a class to which Executive may belong that arises out of or relates to Executive’s employment or termination of employment. 

For the purpose of giving a full and complete release, Executive covenants and agrees that she has no pending claims or charges against
the Release Parties, and if she does so have, Executive agrees to promptly file all appropriate papers requesting withdrawal and dismissal of such claims and for charges. Executive understands and agrees that this Agreement includes all claims that
Executive may have and that Executive does not now know or suspect to exist in Executive’s favor against the Released Parties, and that this Agreement extinguishes those claims. 

  
 3 

 Nothing in this Agreement shall affect the U.S. Equal Employment Opportunity
Commission’s (“EEOC”) rights and responsibilities to enforce the Civil Rights Act of 1964, as amended, the Age Discrimination in Employment Act of 1967 (“ADEA”), as amended, or any other applicable law. Further, nothing in
this Agreement shall be construed as a basis for interfering with Executive’s protected right to challenge the waiver of an ADEA claim under the Older Workers Benefit Protection Act, or to file a charge with, or participate in an investigation
or proceeding conducted by, the EEOC, or any other state, federal or local government entity; provided, however, if the EEOC or any other state, federal or local government entity commences an investigation on Executive’s behalf, Executive
specifically waives and releases her right, if any, to recover any monetary or other benefits of any sort whatsoever arising from any such investigation, nor will she seek reinstatement to her former position with the Company. Nothing in this
Agreement shall be construed to waive a claim or right that cannot be lawfully waived through private agreement. 
 Executive is
not being asked to release any claims or rights under ADEA that may arise after Executive executes this Agreement. However, any claims surrounding the Company’s decision to end Executive’s employment are specifically released and waived
under the terms of this Agreement. 
 5. Covenant Not to Sue. Executive agrees not to sue any of the Released
Parties or become a party to a lawsuit on the basis of any claims of any type to date that arise out of any aspect of Executive’s employment or termination of employment. Executive understands that this is an affirmative promise by Executive
not to sue any of the Released Parties, which is in addition to Executive’s general release and waiver of claims in Paragraphs 3 and 4. However, nothing in this Agreement prevents Executive from bringing an action challenging the validity of
this Agreement. If Executive breaches this Agreement by suing any of the Released Parties in violation of this Covenant Not to Sue, Executive understands that (i) the Released Parties will be entitled to apply for and receive an injunction to
restrain any violation of this paragraph, and (ii) Executive will be required to pay the Released Parties’ legal costs and expenses, including reasonable attorney fees, associated with defending against the lawsuit and enforcing the terms
of this Agreement. 
 6. Application to all Forms of Relief. This Agreement applies to any relief no matter how called,
including without limitation, wages, back pay, front pay, reinstatement, compensatory damages, liquidated damages, punitive damages for pain or suffering, costs and attorney’s fees and expenses. 

7. No Admissions, Complaints or Other Claims. The Executive acknowledges and agrees that this Agreement is not to be construed in
any way as an admission of any liability whatsoever by any Released Party, any such liability being expressly denied. The Executive also acknowledges and agrees that she has not, with respect to any transaction or state of facts existing prior to
the date hereof, filed any Actions against any Released Party with any governmental agency, court or tribunal. 

  
 4 

 8. Acknowledgments. Executive has fully reviewed the terms of this Agreement,
acknowledges that she understands its terms, and states that she is entering into this Agreement knowingly, voluntarily, and in full settlement of all claims which existed in the past or which currently exist, that arise out of her employment with
Waste Management or the termination of her employment. 
 Executive acknowledges that she has had at least forty-five
(45) days to consider this General Release Agreement thoroughly, and Executive understands that she has the right to consult with an attorney, before she signs below and is advised to do so. 

If Executive signs and returns this General Release Agreement before the end of the 45-day period, she certifies that her acceptance of a
shortened time period is knowing and voluntary, and the Company did not — through fraud, misrepresentation, a threat to withdraw or alter the offer before the 45-day period expires, or by providing different terms to other employees who sign
the release before such time period expires — improperly encourage Executive to sign. 
 Executive understands that she may
revoke this General Release Agreement within seven (7) days after she signs it. Executive’s revocation must be in writing and submitted within the seven (7) day period to Mark Schwartz, via hand delivery or via electronic delivery at:
MarkSchwartz@wm.com. If Executive does not revoke this General Release Agreement within the seven (7) day period, it becomes irrevocable. Executive further understands that if she revokes this General Release Agreement, she will not be eligible
to receive the benefits described in Exhibit B. All benefits described in Exhibit B will be processed as soon as administratively possible after the end of this seven (7) day period. 

Executive agrees and accepts that the termination of her employment giving rise to her eligibility for benefits described above will not
be construed to provide or trigger any enhanced benefits under any equity-based compensation awards previously granted to her, including, but not limited to, stock option awards, restricted stock awards, restricted stock unit awards and/or
performance share unit awards. Such forms of enhanced benefits include, without limitation, vesting beyond the date of termination of employment and/or an extended period in which to exercise equity-based awards resulting from a termination of
employment by reason of retirement or resignation, as such terms are contemplated with respect to each such award. Executive further agrees and accepts that the terms and conditions of each equity-based incentive award shall govern those awards, not
withstanding any other representation, whether written or oral, to the contrary. 
 9. Settlement and Acquisition of Goodwill.
Executive waives and releases any and all claims that the restrictive covenants contained in Paragraph 10 of the Employment Agreement (the “Employment Agreement Restrictive Covenants”) are not enforceable or are against public policy.
Executive covenants not to file a lawsuit or arbitration proceeding, pursue declaratory relief, or otherwise take any legal action to challenge the enforceability of the Employment Agreement Restrictive Covenants. The parties agree that the promise
of continued employment and the compensation and benefits associated with same referred to in Exhibit B are, in part, consideration of the settlement of all disputes regarding the enforceability and application of goodwill, trade secrets, and
confidential information developed by Executive in the course of her employment with the Company. To help preserve the value of the goodwill, trade secrets, and 

  
 5 

 
confidential information acquired herewith, it is agreed that Executive will comply with the Employment Agreement Restrictive Covenants (incorporated herein by reference) for the periods of time
set forth therein. It is specifically agreed that the two-year Restricted Term set forth in Paragraph 10 of the Employment Agreement and the restriction provided for therein shall commence upon Executive’s termination of employment with the
Company. In the event that the Company, in its sole discretion, determines that Executive has engaged in activities that violate the Employment Agreement Restrictive Covenants, the Company shall have the right to discontinue and terminate
Executive’s employment. Such Termination of employment shall be in addition to and shall not limit injunctive relief and/or any and all other rights and remedies that the Company may have against Executive under the Employment Agreement or this
Agreement. 
 10. Assistance and Cooperation. Executive agrees that she will cooperate fully with the Company and its
counsel, upon their request, with respect to any proceeding (including any litigation, arbitration, regulatory proceeding, investigation or governmental action) that relates to matters with which Executive was involved while she was an employee of
the Company or with which she has knowledge. Executive agrees to render such cooperation in a timely fashion and to provide Company personnel and the company’s counsel with the full benefit of her knowledge with respect to any such matter. The
Company shall reimburse Executive for actual and reasonable costs and expenses, including reasonable attorney’s fees, related to her assistance in such matters. Executive will remain an elected officer of the Company until the Employment
Termination Date. Accordingly, Executive will be entitled to benefit of the indemnity and expense reimbursement provisions in Article Eighth of the Company’s Third Amended and Restated Certification of Incorporation and Article X of the
Company’s Bylaws, all subject to the provisions thereof and to applicable Delaware law. 
 11. Choice of Laws. This
Agreement is made and entered into in the State of Texas, and shall in all respects be interpreted, enforced and governed under the laws of the State of Texas. The language of all parts of this Agreement shall in all cases be construed as a whole,
according to its fair meaning, and not strictly for or against any of the parties. 
 12. Severability. Should any
provision of this Agreement be declared or be determined by any court to be illegal or invalid, the validity of the remaining parts, terms or provisions shall not be affected thereby and said illegal or invalid part, term, or provision shall be
deemed not to be a part of this Agreement. 
 13. Complete Agreement. The parties hereto agree that the February 2011
Employment Agreement (including any other amendments thereto) as modified by this Agreement, contains the full and final expression of their agreements with respect to the matters contained therein, and acknowledge that no other promises have been
made to or by any of the parties that are not set forth in these Agreements. 
 The parties agree that neither the offer of,
nor the execution of, this Agreement will be construed as an admission of wrongdoing by anyone. Instead, this Agreement is to be construed solely as a reflection of the parties’ desire to facilitate a peaceful separation of employment and to
make sure there are no unresolved issued between them. 

  
 6 

 IN WITNESS WHEREOF, this Agreement is EXECUTED and EFFECTIVE as of the day set forth above.

  

							
	 GRACE COWAN

(“Executive”)
	 		 	 WASTE MANAGEMENT, INC.
 (The “Company”)

				
		 		 	By:	 	/s/ David P. Steiner
	/s/ Grace Cowan	 		 		 	
	Grace Cowan	 		 		 	
		 		 	Its:	 	Chief Executive Officer

  
 7 

 EXHIBIT A 
 The employment of Executive is terminated, effective August 31, 2012 (the “Employment Termination Date”). Executive is therefore, entitled to the payments and benefits listed below and
detailed in under Section 6(e) (i) and (ii) of the Employment Agreement whether or not she signs this Agreement. 
  

	 	a)	Base salary and benefits up to and including the Employment Termination Date; 

 

	 	b)	Reimbursement for all expenses incurred on behalf of the Company up to the Employment Termination Date and paid in accordance with Company policy; or

  

	 	c)	Payment for vacation days accrued but unused in 2012. 

 All applicable withholdings will be deducted from payments described herein. 
 Executive is
entitled to the benefits described above in this Exhibit A whether or not she executes this Separation Agreement. 

  
 8 

 EXHIBIT B 
 The employment of Executive is terminated, effective August 31, 2012 (the “Employment Termination Date”). As Executive’s employment is being terminated pursuant to Section 5(e) of
the Employment Agreement, Executive is entitled to certain compensation and benefits set forth in Section 6(e) (iii) (iv) and (v) of the Employment Agreement only after she executes and does not revoke this Separation
Agreement. 
 In consideration of the premises and promises herein contained, it is agreed that the Company will provide Executive the following
benefits if she executes this Agreement and does not revoke it. The payments and benefits to be provided are as follows: 
  

	 	a)	A payment under the Company’s 2012 Annual Incentive Plan (AIP) on the same basis and to the same extent payments are made to other senior executives of the
Company. Executive will receive 8/12 of any such calculated payment on or about March 15, 2013. 

  

	 	b)	A severance payment in the gross amount of One Million Two Hundred Thousand Dollars and No Cents ($1,200,000.00), approximately equal to two times the sum of
Executive’s base salary ($375,000.00) and her Target Bonus ($225,000.00). This severance amount will be paid as follows: Six Hundred Thousand Dollars and No Cents ($600,000.00) shall be paid no later than 10 days after Executive executes and
does not revoke this Agreement; and the remaining Six Hundred Thousand Dollars and No Cents ($600,000.00) will be paid on or about December 28, 2012. 

  

	 	c)	Twenty-four months of continued group health and/or dental insurance coverage that Executive participated of her Employment Termination Date. Executive must entirely
elect COBRA coverage and the Company will pay for 18 months or until Executive’s death or eligibility for coverage by a subsequent employer, the portion of the COBRA premium in excess of the regular employee premium contribution required of
similarly situated active employees of the Company. Thereafter, Executive will have no additional COBRA coverage, but if Executive has not obtained coverage from a subsequent employer, the Company will provide up to six months additional medical and
dental coverage and Executive will only be required to pay an amount equal to premiums required of similarly situated active employees. 

  

	 	d)	A lump sum separation bonus in the amount of Six Hundred Fifty Thousand Dollars and No Cents ($650,000.00), payable on or about December 28, 2012.

 All Applicable withholdings will be deducted from all payments described herein. 

  
 9 

 EXHIBIT C 
 Executive’s employment as the Company’s Senior Vice President, Customer Experience is being terminated effective August 31, 2012. As a result, Executive is being offered certain
consideration as described in Executive’s Employment Agreement, plus an additional separation bonus, in exchange for executing and not revoking the general release contained in this Agreement. There are no similarly situated employees to
Executive; her duties and responsibilities will be distributed to others. 
 Although there is no comparable position to Executive’s, as
she reports directly to the Chief Executive Officer of the Company, below is a chart showing the other positions reporting directly to the Chief Executive Officer, annotated by age and whether they are separating and will be offered consideration in
exchange for a release (“Selected”) or there are no current plans to separate to their employment (“Not Selected”). The chart was prepared as of July 25, 2012. 
 This data is subject to change, and may be affected by future employment decisions. If you have any questions about this information, contact Mark Schwartz at (713) 265-1608. 

 

									
	 Job Title
	  	Age	 	  	Selected	  	Not Selected
	 EVP, Growth, Innovation & Field Support
	  	 	59	  	  		  	X
	 Director, Aviation
	  	 	52	  	  		  	X
	 SVP, Government Affairs & Corp Communications
	  	 	52	  	  		  	X
	 Corp VP, Business Partner
	  	 	53	  	  		  	X
	 SVP General Counsel & CCO
	  	 	64	  	  		  	X
	 Chief Strategy Officer
	  	 	43	  	  		  	X
	 Sr. Executive Assistant - CEO
	  	 	49	  	  		  	X
	 SVP, Chief Information Officer
	  	 	50	  	  		  	X
	 SVP, Customer Experience
	  	 	54	  	  	X	  	
	 EVP, Fin, Recycling &Energy Services
	  	 	52	  	  		  	X
	 SVP, Eastern Group
	  	 	50	  	  		  	X
	 SVP, Midwestern Group
	  	 	58	  	  		  	X
	 SVP, Southern Group
	  	 	58	  	  	X	  	
	 SVP, Western Group
	  	 	61	  	  	X	  	

  
 10

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